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Merge pull request #2 from cjcliffe/demod_experiment_buffering

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Demodulation experiment complete, ready to move on
This commit is contained in:
Charles J. Cliffe 2014-11-09 18:14:55 -05:00
commit 3bd4736595
39 changed files with 14129 additions and 44 deletions
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16
CMakeLists.txt
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@ -62,12 +62,22 @@ if (DEFINED WIN32)
include_directories ( ${PROJECT_SOURCE_DIR}/external/fftw-3.3.4-dll32 ${PROJECT_SOURCE_DIR}/external/rtl-sdr-release )
link_directories ( ${PROJECT_SOURCE_DIR}/external/fftw-3.3.4-dll32 ${PROJECT_SOURCE_DIR}/external/rtl-sdr-release/x32 )
set(FFTW_LIB fftw3-3)
include_directories ( ${PROJECT_SOURCE_DIR}/external/portaudio/include )
link_directories ( ${PROJECT_SOURCE_DIR}/external/portaudio/libs )
SET (PORTAUDIO_LIBRARY portaudio.dll winmm)
link_directories ( ${PROJECT_SOURCE_DIR}/external/liquid-dsp/lib )
include_directories ( ${PROJECT_SOURCE_DIR}/external/liquid-dsp/include )
else (DEFINED WIN32)
set(RTLSDR_INCLUDE "/opt/local/include" CACHE FILEPATH "RTL-SDR Include Path")
set(RTLSDR_LIB "/opt/local/lib" CACHE FILEPATH "RTL-SDR Lib Path")
include_directories(${RTLSDR_INCLUDE})
link_directories(${RTLSDR_LIB})
set(FFTW_LIB fftw3)
SET (PORTAUDIO_LIBRARY portaudio)
endif (DEFINED WIN32)
@ -80,6 +90,7 @@ SET (cubicsdr_sources
src/AppFrame.cpp
src/SDRThreadQueue.cpp
src/SDRThreadTask.cpp
src/Demodulator.cpp
)
SET (cubicsdr_headers
@ -91,14 +102,15 @@ SET (cubicsdr_headers
src/CubicSDRDefs.h
src/SDRThreadQueue.h
src/SDRThreadTask.h
src/Demodulator.h
)
#configure_files(${PROJECT_SOURCE_DIR}/shaders ${PROJECT_BINARY_DIR}/shaders COPYONLY)
#configure_files(${PROJECT_SOURCE_DIR}/png ${PROJECT_BINARY_DIR}/png COPYONLY)
add_executable(CubicSDR ${cubicsdr_sources} ${cubicsdr_headers})
target_link_libraries(CubicSDR rtlsdr ${FFTW_LIB} ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES})
# cubicvr2 glfw ${GLFW_LIBRARIES} ${OPENAL_LIBRARY}
target_link_libraries(CubicSDR rtlsdr liquid ${FFTW_LIB} ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES} ${PORTAUDIO_LIBRARY})
# cubicvr2 glfw ${GLFW_LIBRARIES}

674
external/liquid-dsp/COPYING vendored Normal file
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@ -0,0 +1,674 @@
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PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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Portable header file to contain:
>>>>>
/*
* PortAudio Portable Real-Time Audio Library
* PortAudio API Header File
* Latest version available at: http://www.portaudio.com
*
* Copyright (c) 1999-2006 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
<<<<<
Implementation files to contain:
>>>>>
/*
* PortAudio Portable Real-Time Audio Library
* Latest version at: http://www.portaudio.com
* <platform> Implementation
* Copyright (c) 1999-2000 <author(s)>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
<<<<<

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#ifndef PA_ALLOCATION_H
#define PA_ALLOCATION_H
/*
* $Id: pa_allocation.h 1339 2008-02-15 07:50:33Z rossb $
* Portable Audio I/O Library allocation context header
* memory allocation context for tracking allocation groups
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2008 Ross Bencina, Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Allocation Group prototypes. An Allocation Group makes it easy to
allocate multiple blocks of memory and free them all at once.
An allocation group is useful for keeping track of multiple blocks
of memory which are allocated at the same time (such as during initialization)
and need to be deallocated at the same time. The allocation group maintains
a list of allocated blocks, and can free all allocations at once. This
can be usefull for cleaning up after a partially initialized object fails.
The allocation group implementation is built on top of the lower
level allocation functions defined in pa_util.h
*/
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
typedef struct
{
long linkCount;
struct PaUtilAllocationGroupLink *linkBlocks;
struct PaUtilAllocationGroupLink *spareLinks;
struct PaUtilAllocationGroupLink *allocations;
}PaUtilAllocationGroup;
/** Create an allocation group.
*/
PaUtilAllocationGroup* PaUtil_CreateAllocationGroup( void );
/** Destroy an allocation group, but not the memory allocated through the group.
*/
void PaUtil_DestroyAllocationGroup( PaUtilAllocationGroup* group );
/** Allocate a block of memory though an allocation group.
*/
void* PaUtil_GroupAllocateMemory( PaUtilAllocationGroup* group, long size );
/** Free a block of memory that was previously allocated though an allocation
group. Calling this function is a relatively time consuming operation.
Under normal circumstances clients should call PaUtil_FreeAllAllocations to
free all allocated blocks simultaneously.
@see PaUtil_FreeAllAllocations
*/
void PaUtil_GroupFreeMemory( PaUtilAllocationGroup* group, void *buffer );
/** Free all blocks of memory which have been allocated through the allocation
group. This function doesn't destroy the group itself.
*/
void PaUtil_FreeAllAllocations( PaUtilAllocationGroup* group );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_ALLOCATION_H */

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#ifndef PA_ASIO_H
#define PA_ASIO_H
/*
* $Id: pa_asio.h 1667 2011-05-02 15:49:20Z rossb $
* PortAudio Portable Real-Time Audio Library
* ASIO specific extensions
*
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief ASIO-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/** Retrieve legal native buffer sizes for the specificed device, in sample frames.
@param device The global index of the device about which the query is being made.
@param minBufferSizeFrames A pointer to the location which will receive the minimum buffer size value.
@param maxBufferSizeFrames A pointer to the location which will receive the maximum buffer size value.
@param preferredBufferSizeFrames A pointer to the location which will receive the preferred buffer size value.
@param granularity A pointer to the location which will receive the "granularity". This value determines
the step size used to compute the legal values between minBufferSizeFrames and maxBufferSizeFrames.
If granularity is -1 then available buffer size values are powers of two.
@see ASIOGetBufferSize in the ASIO SDK.
@note: this function used to be called PaAsio_GetAvailableLatencyValues. There is a
#define that maps PaAsio_GetAvailableLatencyValues to this function for backwards compatibility.
*/
PaError PaAsio_GetAvailableBufferSizes( PaDeviceIndex device,
long *minBufferSizeFrames, long *maxBufferSizeFrames, long *preferredBufferSizeFrames, long *granularity );
/** Backwards compatibility alias for PaAsio_GetAvailableBufferSizes
@see PaAsio_GetAvailableBufferSizes
*/
#define PaAsio_GetAvailableLatencyValues PaAsio_GetAvailableBufferSizes
/** Display the ASIO control panel for the specified device.
@param device The global index of the device whose control panel is to be displayed.
@param systemSpecific On Windows, the calling application's main window handle,
on Macintosh this value should be zero.
*/
PaError PaAsio_ShowControlPanel( PaDeviceIndex device, void* systemSpecific );
/** Retrieve a pointer to a string containing the name of the specified
input channel. The string is valid until Pa_Terminate is called.
The string will be no longer than 32 characters including the null terminator.
*/
PaError PaAsio_GetInputChannelName( PaDeviceIndex device, int channelIndex,
const char** channelName );
/** Retrieve a pointer to a string containing the name of the specified
input channel. The string is valid until Pa_Terminate is called.
The string will be no longer than 32 characters including the null terminator.
*/
PaError PaAsio_GetOutputChannelName( PaDeviceIndex device, int channelIndex,
const char** channelName );
/** Set the sample rate of an open paASIO stream.
@param stream The stream to operate on.
@param sampleRate The new sample rate.
Note that this function may fail if the stream is alredy running and the
ASIO driver does not support switching the sample rate of a running stream.
Returns paIncompatibleStreamHostApi if stream is not a paASIO stream.
*/
PaError PaAsio_SetStreamSampleRate( PaStream* stream, double sampleRate );
#define paAsioUseChannelSelectors (0x01)
typedef struct PaAsioStreamInfo{
unsigned long size; /**< sizeof(PaAsioStreamInfo) */
PaHostApiTypeId hostApiType; /**< paASIO */
unsigned long version; /**< 1 */
unsigned long flags;
/* Support for opening only specific channels of an ASIO device.
If the paAsioUseChannelSelectors flag is set, channelSelectors is a
pointer to an array of integers specifying the device channels to use.
When used, the length of the channelSelectors array must match the
corresponding channelCount parameter to Pa_OpenStream() otherwise a
crash may result.
The values in the selectors array must specify channels within the
range of supported channels for the device or paInvalidChannelCount will
result.
*/
int *channelSelectors;
}PaAsioStreamInfo;
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_ASIO_H */

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#ifndef PA_CONVERTERS_H
#define PA_CONVERTERS_H
/*
* $Id: pa_converters.h 1097 2006-08-26 08:27:53Z rossb $
* Portable Audio I/O Library sample conversion mechanism
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2002 Phil Burk, Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Conversion functions used to convert buffers of samples from one
format to another.
*/
#include "portaudio.h" /* for PaSampleFormat */
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
struct PaUtilTriangularDitherGenerator;
/** Choose an available sample format which is most appropriate for
representing the requested format. If the requested format is not available
higher quality formats are considered before lower quality formates.
@param availableFormats A variable containing the logical OR of all available
formats.
@param format The desired format.
@return The most appropriate available format for representing the requested
format.
*/
PaSampleFormat PaUtil_SelectClosestAvailableFormat(
PaSampleFormat availableFormats, PaSampleFormat format );
/* high level conversions functions for use by implementations */
/** The generic sample converter prototype. Sample converters convert count
samples from sourceBuffer to destinationBuffer. The actual type of the data
pointed to by these parameters varys for different converter functions.
@param destinationBuffer A pointer to the first sample of the destination.
@param destinationStride An offset between successive destination samples
expressed in samples (not bytes.) It may be negative.
@param sourceBuffer A pointer to the first sample of the source.
@param sourceStride An offset between successive source samples
expressed in samples (not bytes.) It may be negative.
@param count The number of samples to convert.
@param ditherState State information used to calculate dither. Converters
that do not perform dithering will ignore this parameter, in which case
NULL or invalid dither state may be passed.
*/
typedef void PaUtilConverter(
void *destinationBuffer, signed int destinationStride,
void *sourceBuffer, signed int sourceStride,
unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator );
/** Find a sample converter function for the given source and destinations
formats and flags (clip and dither.)
@return
A pointer to a PaUtilConverter which will perform the requested
conversion, or NULL if the given format conversion is not supported.
For conversions where clipping or dithering is not necessary, the
clip and dither flags are ignored and a non-clipping or dithering
version is returned.
If the source and destination formats are the same, a function which
copies data of the appropriate size will be returned.
*/
PaUtilConverter* PaUtil_SelectConverter( PaSampleFormat sourceFormat,
PaSampleFormat destinationFormat, PaStreamFlags flags );
/** The generic buffer zeroer prototype. Buffer zeroers copy count zeros to
destinationBuffer. The actual type of the data pointed to varys for
different zeroer functions.
@param destinationBuffer A pointer to the first sample of the destination.
@param destinationStride An offset between successive destination samples
expressed in samples (not bytes.) It may be negative.
@param count The number of samples to zero.
*/
typedef void PaUtilZeroer(
void *destinationBuffer, signed int destinationStride, unsigned int count );
/** Find a buffer zeroer function for the given destination format.
@return
A pointer to a PaUtilZeroer which will perform the requested
zeroing.
*/
PaUtilZeroer* PaUtil_SelectZeroer( PaSampleFormat destinationFormat );
/*----------------------------------------------------------------------------*/
/* low level functions and data structures which may be used for
substituting conversion functions */
/** The type used to store all sample conversion functions.
@see paConverters;
*/
typedef struct{
PaUtilConverter *Float32_To_Int32;
PaUtilConverter *Float32_To_Int32_Dither;
PaUtilConverter *Float32_To_Int32_Clip;
PaUtilConverter *Float32_To_Int32_DitherClip;
PaUtilConverter *Float32_To_Int24;
PaUtilConverter *Float32_To_Int24_Dither;
PaUtilConverter *Float32_To_Int24_Clip;
PaUtilConverter *Float32_To_Int24_DitherClip;
PaUtilConverter *Float32_To_Int16;
PaUtilConverter *Float32_To_Int16_Dither;
PaUtilConverter *Float32_To_Int16_Clip;
PaUtilConverter *Float32_To_Int16_DitherClip;
PaUtilConverter *Float32_To_Int8;
PaUtilConverter *Float32_To_Int8_Dither;
PaUtilConverter *Float32_To_Int8_Clip;
PaUtilConverter *Float32_To_Int8_DitherClip;
PaUtilConverter *Float32_To_UInt8;
PaUtilConverter *Float32_To_UInt8_Dither;
PaUtilConverter *Float32_To_UInt8_Clip;
PaUtilConverter *Float32_To_UInt8_DitherClip;
PaUtilConverter *Int32_To_Float32;
PaUtilConverter *Int32_To_Int24;
PaUtilConverter *Int32_To_Int24_Dither;
PaUtilConverter *Int32_To_Int16;
PaUtilConverter *Int32_To_Int16_Dither;
PaUtilConverter *Int32_To_Int8;
PaUtilConverter *Int32_To_Int8_Dither;
PaUtilConverter *Int32_To_UInt8;
PaUtilConverter *Int32_To_UInt8_Dither;
PaUtilConverter *Int24_To_Float32;
PaUtilConverter *Int24_To_Int32;
PaUtilConverter *Int24_To_Int16;
PaUtilConverter *Int24_To_Int16_Dither;
PaUtilConverter *Int24_To_Int8;
PaUtilConverter *Int24_To_Int8_Dither;
PaUtilConverter *Int24_To_UInt8;
PaUtilConverter *Int24_To_UInt8_Dither;
PaUtilConverter *Int16_To_Float32;
PaUtilConverter *Int16_To_Int32;
PaUtilConverter *Int16_To_Int24;
PaUtilConverter *Int16_To_Int8;
PaUtilConverter *Int16_To_Int8_Dither;
PaUtilConverter *Int16_To_UInt8;
PaUtilConverter *Int16_To_UInt8_Dither;
PaUtilConverter *Int8_To_Float32;
PaUtilConverter *Int8_To_Int32;
PaUtilConverter *Int8_To_Int24;
PaUtilConverter *Int8_To_Int16;
PaUtilConverter *Int8_To_UInt8;
PaUtilConverter *UInt8_To_Float32;
PaUtilConverter *UInt8_To_Int32;
PaUtilConverter *UInt8_To_Int24;
PaUtilConverter *UInt8_To_Int16;
PaUtilConverter *UInt8_To_Int8;
PaUtilConverter *Copy_8_To_8; /* copy without any conversion */
PaUtilConverter *Copy_16_To_16; /* copy without any conversion */
PaUtilConverter *Copy_24_To_24; /* copy without any conversion */
PaUtilConverter *Copy_32_To_32; /* copy without any conversion */
} PaUtilConverterTable;
/** A table of pointers to all required converter functions.
PaUtil_SelectConverter() uses this table to lookup the appropriate
conversion functions. The fields of this structure are initialized
with default conversion functions. Fields may be NULL, indicating that
no conversion function is available. User code may substitue optimised
conversion functions by assigning different function pointers to
these fields.
@note
If the PA_NO_STANDARD_CONVERTERS preprocessor variable is defined,
PortAudio's standard converters will not be compiled, and all fields
of this structure will be initialized to NULL. In such cases, users
should supply their own conversion functions if the require PortAudio
to open a stream that requires sample conversion.
@see PaUtilConverterTable, PaUtilConverter, PaUtil_SelectConverter
*/
extern PaUtilConverterTable paConverters;
/** The type used to store all buffer zeroing functions.
@see paZeroers;
*/
typedef struct{
PaUtilZeroer *ZeroU8; /* unsigned 8 bit, zero == 128 */
PaUtilZeroer *Zero8;
PaUtilZeroer *Zero16;
PaUtilZeroer *Zero24;
PaUtilZeroer *Zero32;
} PaUtilZeroerTable;
/** A table of pointers to all required zeroer functions.
PaUtil_SelectZeroer() uses this table to lookup the appropriate
conversion functions. The fields of this structure are initialized
with default conversion functions. User code may substitue optimised
conversion functions by assigning different function pointers to
these fields.
@note
If the PA_NO_STANDARD_ZEROERS preprocessor variable is defined,
PortAudio's standard zeroers will not be compiled, and all fields
of this structure will be initialized to NULL. In such cases, users
should supply their own zeroing functions for the sample sizes which
they intend to use.
@see PaUtilZeroerTable, PaUtilZeroer, PaUtil_SelectZeroer
*/
extern PaUtilZeroerTable paZeroers;
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_CONVERTERS_H */

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#ifndef PA_CPULOAD_H
#define PA_CPULOAD_H
/*
* $Id: pa_cpuload.h 1097 2006-08-26 08:27:53Z rossb $
* Portable Audio I/O Library CPU Load measurement functions
* Portable CPU load measurement facility.
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 2002 Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Functions to assist in measuring the CPU utilization of a callback
stream. Used to implement the Pa_GetStreamCpuLoad() function.
*/
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
typedef struct {
double samplingPeriod;
double measurementStartTime;
double averageLoad;
} PaUtilCpuLoadMeasurer; /**< @todo need better name than measurer */
void PaUtil_InitializeCpuLoadMeasurer( PaUtilCpuLoadMeasurer* measurer, double sampleRate );
void PaUtil_BeginCpuLoadMeasurement( PaUtilCpuLoadMeasurer* measurer );
void PaUtil_EndCpuLoadMeasurement( PaUtilCpuLoadMeasurer* measurer, unsigned long framesProcessed );
void PaUtil_ResetCpuLoadMeasurer( PaUtilCpuLoadMeasurer* measurer );
double PaUtil_GetCpuLoad( PaUtilCpuLoadMeasurer* measurer );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_CPULOAD_H */

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#ifndef PA_LOG_H
#define PA_LOG_H
/*
* Log file redirector function
* Copyright (c) 1999-2006 Ross Bencina, Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
*/
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
void PaUtil_DebugPrint( const char *format, ... );
/*
The basic format for log messages is described below. If you need to
add any log messages, please follow this format.
Function entry (void function):
"FunctionName called.\n"
Function entry (non void function):
"FunctionName called:\n"
"\tParam1Type param1: param1Value\n"
"\tParam2Type param2: param2Value\n" (etc...)
Function exit (no return value):
"FunctionName returned.\n"
Function exit (simple return value):
"FunctionName returned:\n"
"\tReturnType: returnValue\n"
If the return type is an error code, the error text is displayed in ()
If the return type is not an error code, but has taken a special value
because an error occurred, then the reason for the error is shown in []
If the return type is a struct ptr, the struct is dumped.
See the code below for examples
*/
/** PA_DEBUG() provides a simple debug message printing facility. The macro
passes it's argument to a printf-like function called PaUtil_DebugPrint()
which prints to stderr and always flushes the stream after printing.
Because preprocessor macros cannot directly accept variable length argument
lists, calls to the macro must include an additional set of parenthesis, eg:
PA_DEBUG(("errorno: %d", 1001 ));
*/
#ifdef PA_ENABLE_DEBUG_OUTPUT
#define PA_DEBUG(x) PaUtil_DebugPrint x ;
#else
#define PA_DEBUG(x)
#endif
#ifdef PA_LOG_API_CALLS
#define PA_LOGAPI(x) PaUtil_DebugPrint x
#define PA_LOGAPI_ENTER(functionName) PaUtil_DebugPrint( functionName " called.\n" )
#define PA_LOGAPI_ENTER_PARAMS(functionName) PaUtil_DebugPrint( functionName " called:\n" )
#define PA_LOGAPI_EXIT(functionName) PaUtil_DebugPrint( functionName " returned.\n" )
#define PA_LOGAPI_EXIT_PAERROR( functionName, result ) \
PaUtil_DebugPrint( functionName " returned:\n" ); \
PaUtil_DebugPrint("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )
#define PA_LOGAPI_EXIT_T( functionName, resultFormatString, result ) \
PaUtil_DebugPrint( functionName " returned:\n" ); \
PaUtil_DebugPrint("\t" resultFormatString "\n", result )
#define PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( functionName, positiveResultFormatString, result ) \
PaUtil_DebugPrint( functionName " returned:\n" ); \
if( result > 0 ) \
PaUtil_DebugPrint("\t" positiveResultFormatString "\n", result ); \
else \
PaUtil_DebugPrint("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )
#else
#define PA_LOGAPI(x)
#define PA_LOGAPI_ENTER(functionName)
#define PA_LOGAPI_ENTER_PARAMS(functionName)
#define PA_LOGAPI_EXIT(functionName)
#define PA_LOGAPI_EXIT_PAERROR( functionName, result )
#define PA_LOGAPI_EXIT_T( functionName, resultFormatString, result )
#define PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( functionName, positiveResultFormatString, result )
#endif
typedef void (*PaUtilLogCallback ) (const char *log);
/**
Install user provided log function
*/
void PaUtil_SetDebugPrintFunction(PaUtilLogCallback cb);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_LOG_H */

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#ifndef PA_DITHER_H
#define PA_DITHER_H
/*
* $Id: pa_dither.h 1418 2009-10-12 21:00:53Z philburk $
* Portable Audio I/O Library triangular dither generator
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2002 Phil Burk, Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Functions for generating dither noise
*/
#include "pa_types.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Note that the linear congruential algorithm requires 32 bit integers
* because it uses arithmetic overflow. So use PaUint32 instead of
* unsigned long so it will work on 64 bit systems.
*/
/** @brief State needed to generate a dither signal */
typedef struct PaUtilTriangularDitherGenerator{
PaUint32 previous;
PaUint32 randSeed1;
PaUint32 randSeed2;
} PaUtilTriangularDitherGenerator;
/** @brief Initialize dither state */
void PaUtil_InitializeTriangularDitherState( PaUtilTriangularDitherGenerator *ditherState );
/**
@brief Calculate 2 LSB dither signal with a triangular distribution.
Ranged for adding to a 1 bit right-shifted 32 bit integer
prior to >>15. eg:
<pre>
signed long in = *
signed long dither = PaUtil_Generate16BitTriangularDither( ditherState );
signed short out = (signed short)(((in>>1) + dither) >> 15);
</pre>
@return
A signed 32-bit integer with a range of +32767 to -32768
*/
PaInt32 PaUtil_Generate16BitTriangularDither( PaUtilTriangularDitherGenerator *ditherState );
/**
@brief Calculate 2 LSB dither signal with a triangular distribution.
Ranged for adding to a pre-scaled float.
<pre>
float in = *
float dither = PaUtil_GenerateFloatTriangularDither( ditherState );
// use smaller scaler to prevent overflow when we add the dither
signed short out = (signed short)(in*(32766.0f) + dither );
</pre>
@return
A float with a range of -2.0 to +1.99999.
*/
float PaUtil_GenerateFloatTriangularDither( PaUtilTriangularDitherGenerator *ditherState );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_DITHER_H */

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#ifndef PA_ENDIANNESS_H
#define PA_ENDIANNESS_H
/*
* $Id: pa_endianness.h 1324 2008-01-27 02:03:30Z bjornroche $
* Portable Audio I/O Library current platform endianness macros
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2002 Phil Burk, Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Configure endianness symbols for the target processor.
Arrange for either the PA_LITTLE_ENDIAN or PA_BIG_ENDIAN preprocessor symbols
to be defined. The one that is defined reflects the endianness of the target
platform and may be used to implement conditional compilation of byte-order
dependent code.
If either PA_LITTLE_ENDIAN or PA_BIG_ENDIAN is defined already, then no attempt
is made to override that setting. This may be useful if you have a better way
of determining the platform's endianness. The autoconf mechanism uses this for
example.
A PA_VALIDATE_ENDIANNESS macro is provided to compare the compile time
and runtime endiannes and raise an assertion if they don't match.
*/
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* If this is an apple, we need to do detect endianness this way */
#if defined(__APPLE__)
/* we need to do some endian detection that is sensitive to harware arch */
#if defined(__LITTLE_ENDIAN__)
#if !defined( PA_LITTLE_ENDIAN )
#define PA_LITTLE_ENDIAN
#endif
#if defined( PA_BIG_ENDIAN )
#undef PA_BIG_ENDIAN
#endif
#else
#if !defined( PA_BIG_ENDIAN )
#define PA_BIG_ENDIAN
#endif
#if defined( PA_LITTLE_ENDIAN )
#undef PA_LITTLE_ENDIAN
#endif
#endif
#else
/* this is not an apple, so first check the existing defines, and, failing that,
detect well-known architechtures. */
#if defined(PA_LITTLE_ENDIAN) || defined(PA_BIG_ENDIAN)
/* endianness define has been set externally, such as by autoconf */
#if defined(PA_LITTLE_ENDIAN) && defined(PA_BIG_ENDIAN)
#error both PA_LITTLE_ENDIAN and PA_BIG_ENDIAN have been defined externally to pa_endianness.h - only one endianness at a time please
#endif
#else
/* endianness define has not been set externally */
/* set PA_LITTLE_ENDIAN or PA_BIG_ENDIAN by testing well known platform specific defines */
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__) || defined(LITTLE_ENDIAN) || defined(__i386) || defined(_M_IX86) || defined(__x86_64__)
#define PA_LITTLE_ENDIAN /* win32, assume intel byte order */
#else
#define PA_BIG_ENDIAN
#endif
#endif
#if !defined(PA_LITTLE_ENDIAN) && !defined(PA_BIG_ENDIAN)
/*
If the following error is raised, you either need to modify the code above
to automatically determine the endianness from other symbols defined on your
platform, or define either PA_LITTLE_ENDIAN or PA_BIG_ENDIAN externally.
*/
#error pa_endianness.h was unable to automatically determine the endianness of the target platform
#endif
#endif
/* PA_VALIDATE_ENDIANNESS compares the compile time and runtime endianness,
and raises an assertion if they don't match. <assert.h> must be included in
the context in which this macro is used.
*/
#if defined(NDEBUG)
#define PA_VALIDATE_ENDIANNESS
#else
#if defined(PA_LITTLE_ENDIAN)
#define PA_VALIDATE_ENDIANNESS \
{ \
const long nativeOne = 1; \
assert( "PortAudio: compile time and runtime endianness don't match" && (((char *)&nativeOne)[0]) == 1 ); \
}
#elif defined(PA_BIG_ENDIAN)
#define PA_VALIDATE_ENDIANNESS \
{ \
const long nativeOne = 1; \
assert( "PortAudio: compile time and runtime endianness don't match" && (((char *)&nativeOne)[0]) == 0 ); \
}
#endif
#endif
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_ENDIANNESS_H */

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#ifndef PA_HOSTAPI_H
#define PA_HOSTAPI_H
/*
* $Id: pa_hostapi.h 1880 2012-12-04 18:39:48Z rbencina $
* Portable Audio I/O Library
* host api representation
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2008 Ross Bencina, Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Interfaces and representation structures used by pa_front.c
to manage and communicate with host API implementations.
*/
#include "portaudio.h"
/**
The PA_NO_* host API macros are now deprecated in favor of PA_USE_* macros.
PA_USE_* indicates whether a particular host API will be initialized by PortAudio.
An undefined or 0 value indicates that the host API will not be used. A value of 1
indicates that the host API will be used. PA_USE_* macros should be left undefined
or defined to either 0 or 1.
The code below ensures that PA_USE_* macros are always defined and have value
0 or 1. Undefined symbols are defaulted to 0. Symbols that are neither 0 nor 1
are defaulted to 1.
*/
#ifndef PA_USE_SKELETON
#define PA_USE_SKELETON 0
#elif (PA_USE_SKELETON != 0) && (PA_USE_SKELETON != 1)
#undef PA_USE_SKELETON
#define PA_USE_SKELETON 1
#endif
#if defined(PA_NO_ASIO) || defined(PA_NO_DS) || defined(PA_NO_WMME) || defined(PA_NO_WASAPI) || defined(PA_NO_WDMKS)
#error "Portaudio: PA_NO_<APINAME> is no longer supported, please remove definition and use PA_USE_<APINAME> instead"
#endif
#ifndef PA_USE_ASIO
#define PA_USE_ASIO 0
#elif (PA_USE_ASIO != 0) && (PA_USE_ASIO != 1)
#undef PA_USE_ASIO
#define PA_USE_ASIO 1
#endif
#ifndef PA_USE_DS
#define PA_USE_DS 0
#elif (PA_USE_DS != 0) && (PA_USE_DS != 1)
#undef PA_USE_DS
#define PA_USE_DS 1
#endif
#ifndef PA_USE_WMME
#define PA_USE_WMME 0
#elif (PA_USE_WMME != 0) && (PA_USE_WMME != 1)
#undef PA_USE_WMME
#define PA_USE_WMME 1
#endif
#ifndef PA_USE_WASAPI
#define PA_USE_WASAPI 0
#elif (PA_USE_WASAPI != 0) && (PA_USE_WASAPI != 1)
#undef PA_USE_WASAPI
#define PA_USE_WASAPI 1
#endif
#ifndef PA_USE_WDMKS
#define PA_USE_WDMKS 0
#elif (PA_USE_WDMKS != 0) && (PA_USE_WDMKS != 1)
#undef PA_USE_WDMKS
#define PA_USE_WDMKS 1
#endif
/* Set default values for Unix based APIs. */
#if defined(PA_NO_OSS) || defined(PA_NO_ALSA) || defined(PA_NO_JACK) || defined(PA_NO_COREAUDIO) || defined(PA_NO_SGI) || defined(PA_NO_ASIHPI)
#error "Portaudio: PA_NO_<APINAME> is no longer supported, please remove definition and use PA_USE_<APINAME> instead"
#endif
#ifndef PA_USE_OSS
#define PA_USE_OSS 0
#elif (PA_USE_OSS != 0) && (PA_USE_OSS != 1)
#undef PA_USE_OSS
#define PA_USE_OSS 1
#endif
#ifndef PA_USE_ALSA
#define PA_USE_ALSA 0
#elif (PA_USE_ALSA != 0) && (PA_USE_ALSA != 1)
#undef PA_USE_ALSA
#define PA_USE_ALSA 1
#endif
#ifndef PA_USE_JACK
#define PA_USE_JACK 0
#elif (PA_USE_JACK != 0) && (PA_USE_JACK != 1)
#undef PA_USE_JACK
#define PA_USE_JACK 1
#endif
#ifndef PA_USE_SGI
#define PA_USE_SGI 0
#elif (PA_USE_SGI != 0) && (PA_USE_SGI != 1)
#undef PA_USE_SGI
#define PA_USE_SGI 1
#endif
#ifndef PA_USE_COREAUDIO
#define PA_USE_COREAUDIO 0
#elif (PA_USE_COREAUDIO != 0) && (PA_USE_COREAUDIO != 1)
#undef PA_USE_COREAUDIO
#define PA_USE_COREAUDIO 1
#endif
#ifndef PA_USE_ASIHPI
#define PA_USE_ASIHPI 0
#elif (PA_USE_ASIHPI != 0) && (PA_USE_ASIHPI != 1)
#undef PA_USE_ASIHPI
#define PA_USE_ASIHPI 1
#endif
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/** **FOR THE USE OF pa_front.c ONLY**
Do NOT use fields in this structure, they my change at any time.
Use functions defined in pa_util.h if you think you need functionality
which can be derived from here.
*/
typedef struct PaUtilPrivatePaFrontHostApiInfo {
unsigned long baseDeviceIndex;
}PaUtilPrivatePaFrontHostApiInfo;
/** The common header for all data structures whose pointers are passed through
the hostApiSpecificStreamInfo field of the PaStreamParameters structure.
Note that in order to keep the public PortAudio interface clean, this structure
is not used explicitly when declaring hostApiSpecificStreamInfo data structures.
However, some code in pa_front depends on the first 3 members being equivalent
with this structure.
@see PaStreamParameters
*/
typedef struct PaUtilHostApiSpecificStreamInfoHeader
{
unsigned long size; /**< size of whole structure including this header */
PaHostApiTypeId hostApiType; /**< host API for which this data is intended */
unsigned long version; /**< structure version */
} PaUtilHostApiSpecificStreamInfoHeader;
/** A structure representing the interface to a host API. Contains both
concrete data and pointers to functions which implement the interface.
*/
typedef struct PaUtilHostApiRepresentation {
PaUtilPrivatePaFrontHostApiInfo privatePaFrontInfo;
/** The host api implementation should populate the info field. In the
case of info.defaultInputDevice and info.defaultOutputDevice the
values stored should be 0 based indices within the host api's own
device index range (0 to deviceCount). These values will be converted
to global device indices by pa_front after PaUtilHostApiInitializer()
returns.
*/
PaHostApiInfo info;
PaDeviceInfo** deviceInfos;
/**
(*Terminate)() is guaranteed to be called with a valid <hostApi>
parameter, which was previously returned from the same implementation's
initializer.
*/
void (*Terminate)( struct PaUtilHostApiRepresentation *hostApi );
/**
The inputParameters and outputParameters pointers should not be saved
as they will not remain valid after OpenStream is called.
The following guarantees are made about parameters to (*OpenStream)():
[NOTE: the following list up to *END PA FRONT VALIDATIONS* should be
kept in sync with the one for ValidateOpenStreamParameters and
Pa_OpenStream in pa_front.c]
PaHostApiRepresentation *hostApi
- is valid for this implementation
PaStream** stream
- is non-null
- at least one of inputParameters & outputParmeters is valid (not NULL)
- if inputParameters & outputParmeters are both valid, that
inputParameters->device & outputParmeters->device both use the same host api
PaDeviceIndex inputParameters->device
- is within range (0 to Pa_CountDevices-1) Or:
- is paUseHostApiSpecificDeviceSpecification and
inputParameters->hostApiSpecificStreamInfo is non-NULL and refers
to a valid host api
int inputParameters->numChannels
- if inputParameters->device is not paUseHostApiSpecificDeviceSpecification, numInputChannels is > 0
- upper bound is NOT validated against device capabilities
PaSampleFormat inputParameters->sampleFormat
- is one of the sample formats defined in portaudio.h
void *inputParameters->hostApiSpecificStreamInfo
- if supplied its hostApi field matches the input device's host Api
PaDeviceIndex outputParmeters->device
- is within range (0 to Pa_CountDevices-1)
int outputParmeters->numChannels
- if inputDevice is valid, numInputChannels is > 0
- upper bound is NOT validated against device capabilities
PaSampleFormat outputParmeters->sampleFormat
- is one of the sample formats defined in portaudio.h
void *outputParmeters->hostApiSpecificStreamInfo
- if supplied its hostApi field matches the output device's host Api
double sampleRate
- is not an 'absurd' rate (less than 1000. or greater than 384000.)
- sampleRate is NOT validated against device capabilities
PaStreamFlags streamFlags
- unused platform neutral flags are zero
- paNeverDropInput is only used for full-duplex callback streams
with variable buffer size (paFramesPerBufferUnspecified)
[*END PA FRONT VALIDATIONS*]
The following validations MUST be performed by (*OpenStream)():
- check that input device can support numInputChannels
- check that input device can support inputSampleFormat, or that
we have the capability to convert from outputSampleFormat to
a native format
- if inputStreamInfo is supplied, validate its contents,
or return an error if no inputStreamInfo is expected
- check that output device can support numOutputChannels
- check that output device can support outputSampleFormat, or that
we have the capability to convert from outputSampleFormat to
a native format
- if outputStreamInfo is supplied, validate its contents,
or return an error if no outputStreamInfo is expected
- if a full duplex stream is requested, check that the combination
of input and output parameters is supported
- check that the device supports sampleRate
- alter sampleRate to a close allowable rate if necessary
- validate inputLatency and outputLatency
- validate any platform specific flags, if flags are supplied they
must be valid.
*/
PaError (*OpenStream)( struct PaUtilHostApiRepresentation *hostApi,
PaStream** stream,
const PaStreamParameters *inputParameters,
const PaStreamParameters *outputParameters,
double sampleRate,
unsigned long framesPerCallback,
PaStreamFlags streamFlags,
PaStreamCallback *streamCallback,
void *userData );
PaError (*IsFormatSupported)( struct PaUtilHostApiRepresentation *hostApi,
const PaStreamParameters *inputParameters,
const PaStreamParameters *outputParameters,
double sampleRate );
} PaUtilHostApiRepresentation;
/** Prototype for the initialization function which must be implemented by every
host API.
This function should only return an error other than paNoError if it encounters
an unexpected and fatal error (memory allocation error for example). In general,
there may be conditions under which it returns a NULL interface pointer and also
returns paNoError. For example, if the ASIO implementation detects that ASIO is
not installed, it should return a NULL interface, and paNoError.
@see paHostApiInitializers
*/
typedef PaError PaUtilHostApiInitializer( PaUtilHostApiRepresentation**, PaHostApiIndex );
/** paHostApiInitializers is a NULL-terminated array of host API initialization
functions. These functions are called by pa_front.c to initialize the host APIs
when the client calls Pa_Initialize().
The initialization functions are invoked in order.
The first successfully initialized host API that has a default input *or* output
device is used as the default PortAudio host API. This is based on the logic that
there is only one default host API, and it must contain the default input and output
devices (if defined).
There is a platform specific file that defines paHostApiInitializers for that
platform, pa_win/pa_win_hostapis.c contains the Win32 definitions for example.
*/
extern PaUtilHostApiInitializer *paHostApiInitializers[];
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_HOSTAPI_H */

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#ifndef PA_JACK_H
#define PA_JACK_H
/*
* $Id:
* PortAudio Portable Real-Time Audio Library
* JACK-specific extensions
*
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
* @ingroup public_header
* @brief JACK-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C" {
#endif
/** Set the JACK client name.
*
* During Pa_Initialize, When PA JACK connects as a client of the JACK server, it requests a certain
* name, which is for instance prepended to port names. By default this name is "PortAudio". The
* JACK server may append a suffix to the client name, in order to avoid clashes among clients that
* try to connect with the same name (e.g., different PA JACK clients).
*
* This function must be called before Pa_Initialize, otherwise it won't have any effect. Note that
* the string is not copied, but instead referenced directly, so it must not be freed for as long as
* PA might need it.
* @sa PaJack_GetClientName
*/
PaError PaJack_SetClientName( const char* name );
/** Get the JACK client name used by PA JACK.
*
* The caller is responsible for freeing the returned pointer.
*/
PaError PaJack_GetClientName(const char** clientName);
#ifdef __cplusplus
}
#endif
#endif

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#ifndef PA_LINUX_ALSA_H
#define PA_LINUX_ALSA_H
/*
* $Id: pa_linux_alsa.h 1597 2011-02-11 00:15:51Z dmitrykos $
* PortAudio Portable Real-Time Audio Library
* ALSA-specific extensions
*
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
* @ingroup public_header
* @brief ALSA-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct PaAlsaStreamInfo
{
unsigned long size;
PaHostApiTypeId hostApiType;
unsigned long version;
const char *deviceString;
}
PaAlsaStreamInfo;
/** Initialize host API specific structure, call this before setting relevant attributes. */
void PaAlsa_InitializeStreamInfo( PaAlsaStreamInfo *info );
/** Instruct whether to enable real-time priority when starting the audio thread.
*
* If this is turned on by the stream is started, the audio callback thread will be created
* with the FIFO scheduling policy, which is suitable for realtime operation.
**/
void PaAlsa_EnableRealtimeScheduling( PaStream *s, int enable );
#if 0
void PaAlsa_EnableWatchdog( PaStream *s, int enable );
#endif
/** Get the ALSA-lib card index of this stream's input device. */
PaError PaAlsa_GetStreamInputCard( PaStream *s, int *card );
/** Get the ALSA-lib card index of this stream's output device. */
PaError PaAlsa_GetStreamOutputCard( PaStream *s, int *card );
/** Set the number of periods (buffer fragments) to configure devices with.
*
* By default the number of periods is 4, this is the lowest number of periods that works well on
* the author's soundcard.
* @param numPeriods The number of periods.
*/
PaError PaAlsa_SetNumPeriods( int numPeriods );
/** Set the maximum number of times to retry opening busy device (sleeping for a
* short interval inbetween).
*/
PaError PaAlsa_SetRetriesBusy( int retries );
/** Set the path and name of ALSA library file if PortAudio is configured to load it dynamically (see
* PA_ALSA_DYNAMIC). This setting will overwrite the default name set by PA_ALSA_PATHNAME define.
* @param pathName Full path with filename. Only filename can be used, but dlopen() will lookup default
* searchable directories (/usr/lib;/usr/local/lib) then.
*/
void PaAlsa_SetLibraryPathName( const char *pathName );
#ifdef __cplusplus
}
#endif
#endif

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#ifndef PA_MAC_CORE_H
#define PA_MAC_CORE_H
/*
* PortAudio Portable Real-Time Audio Library
* Macintosh Core Audio specific extensions
* portaudio.h should be included before this file.
*
* Copyright (c) 2005-2006 Bjorn Roche
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
* @ingroup public_header
* @brief CoreAudio-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#include <AudioUnit/AudioUnit.h>
#include <AudioToolbox/AudioToolbox.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* A pointer to a paMacCoreStreamInfo may be passed as
* the hostApiSpecificStreamInfo in the PaStreamParameters struct
* when opening a stream or querying the format. Use NULL, for the
* defaults. Note that for duplex streams, flags for input and output
* should be the same or behaviour is undefined.
*/
typedef struct
{
unsigned long size; /**size of whole structure including this header */
PaHostApiTypeId hostApiType; /**host API for which this data is intended */
unsigned long version; /**structure version */
unsigned long flags; /** flags to modify behaviour */
SInt32 const * channelMap; /** Channel map for HAL channel mapping , if not needed, use NULL;*/
unsigned long channelMapSize; /** Channel map size for HAL channel mapping , if not needed, use 0;*/
} PaMacCoreStreamInfo;
/**
* Functions
*/
/** Use this function to initialize a paMacCoreStreamInfo struct
* using the requested flags. Note that channel mapping is turned
* off after a call to this function.
* @param data The datastructure to initialize
* @param flags The flags to initialize the datastructure with.
*/
void PaMacCore_SetupStreamInfo( PaMacCoreStreamInfo *data, unsigned long flags );
/** call this after pa_SetupMacCoreStreamInfo to use channel mapping as described in notes.txt.
* @param data The stream info structure to assign a channel mapping to
* @param channelMap The channel map array, as described in notes.txt. This array pointer will be used directly (ie the underlying data will not be copied), so the caller should not free the array until after the stream has been opened.
* @param channelMapSize The size of the channel map array.
*/
void PaMacCore_SetupChannelMap( PaMacCoreStreamInfo *data, const SInt32 * const channelMap, unsigned long channelMapSize );
/**
* Retrieve the AudioDeviceID of the input device assigned to an open stream
*
* @param s The stream to query.
*
* @return A valid AudioDeviceID, or NULL if an error occurred.
*/
AudioDeviceID PaMacCore_GetStreamInputDevice( PaStream* s );
/**
* Retrieve the AudioDeviceID of the output device assigned to an open stream
*
* @param s The stream to query.
*
* @return A valid AudioDeviceID, or NULL if an error occurred.
*/
AudioDeviceID PaMacCore_GetStreamOutputDevice( PaStream* s );
/**
* Returns a statically allocated string with the device's name
* for the given channel. NULL will be returned on failure.
*
* This function's implemenation is not complete!
*
* @param device The PortAudio device index.
* @param channel The channel number who's name is requested.
* @return a statically allocated string with the name of the device.
* Because this string is statically allocated, it must be
* coppied if it is to be saved and used by the user after
* another call to this function.
*
*/
const char *PaMacCore_GetChannelName( int device, int channelIndex, bool input );
/** Retrieve the range of legal native buffer sizes for the specificed device, in sample frames.
@param device The global index of the PortAudio device about which the query is being made.
@param minBufferSizeFrames A pointer to the location which will receive the minimum buffer size value.
@param maxBufferSizeFrames A pointer to the location which will receive the maximum buffer size value.
@see kAudioDevicePropertyBufferFrameSizeRange in the CoreAudio SDK.
*/
PaError PaMacCore_GetBufferSizeRange( PaDeviceIndex device,
long *minBufferSizeFrames, long *maxBufferSizeFrames );
/**
* Flags
*/
/**
* The following flags alter the behaviour of PA on the mac platform.
* they can be ORed together. These should work both for opening and
* checking a device.
*/
/** Allows PortAudio to change things like the device's frame size,
* which allows for much lower latency, but might disrupt the device
* if other programs are using it, even when you are just Querying
* the device. */
#define paMacCoreChangeDeviceParameters (0x01)
/** In combination with the above flag,
* causes the stream opening to fail, unless the exact sample rates
* are supported by the device. */
#define paMacCoreFailIfConversionRequired (0x02)
/** These flags set the SR conversion quality, if required. The wierd ordering
* allows Maximum Quality to be the default.*/
#define paMacCoreConversionQualityMin (0x0100)
#define paMacCoreConversionQualityMedium (0x0200)
#define paMacCoreConversionQualityLow (0x0300)
#define paMacCoreConversionQualityHigh (0x0400)
#define paMacCoreConversionQualityMax (0x0000)
/**
* Here are some "preset" combinations of flags (above) to get to some
* common configurations. THIS IS OVERKILL, but if more flags are added
* it won't be.
*/
/**This is the default setting: do as much sample rate conversion as possible
* and as little mucking with the device as possible. */
#define paMacCorePlayNice (0x00)
/**This setting is tuned for pro audio apps. It allows SR conversion on input
and output, but it tries to set the appropriate SR on the device.*/
#define paMacCorePro (0x01)
/**This is a setting to minimize CPU usage and still play nice.*/
#define paMacCoreMinimizeCPUButPlayNice (0x0100)
/**This is a setting to minimize CPU usage, even if that means interrupting the device. */
#define paMacCoreMinimizeCPU (0x0101)
#ifdef __cplusplus
}
#endif /** __cplusplus */
#endif /** PA_MAC_CORE_H */

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/*
* $Id: pa_memorybarrier.h 1240 2007-07-17 13:05:07Z bjornroche $
* Portable Audio I/O Library
* Memory barrier utilities
*
* Author: Bjorn Roche, XO Audio, LLC
*
* This program uses the PortAudio Portable Audio Library.
* For more information see: http://www.portaudio.com
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/**
@file pa_memorybarrier.h
@ingroup common_src
*/
/****************
* Some memory barrier primitives based on the system.
* right now only OS X, FreeBSD, and Linux are supported. In addition to providing
* memory barriers, these functions should ensure that data cached in registers
* is written out to cache where it can be snooped by other CPUs. (ie, the volatile
* keyword should not be required)
*
* the primitives that must be defined are:
*
* PaUtil_FullMemoryBarrier()
* PaUtil_ReadMemoryBarrier()
* PaUtil_WriteMemoryBarrier()
*
****************/
#if defined(__APPLE__)
# include <libkern/OSAtomic.h>
/* Here are the memory barrier functions. Mac OS X only provides
full memory barriers, so the three types of barriers are the same,
however, these barriers are superior to compiler-based ones. */
# define PaUtil_FullMemoryBarrier() OSMemoryBarrier()
# define PaUtil_ReadMemoryBarrier() OSMemoryBarrier()
# define PaUtil_WriteMemoryBarrier() OSMemoryBarrier()
#elif defined(__GNUC__)
/* GCC >= 4.1 has built-in intrinsics. We'll use those */
# if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
# define PaUtil_FullMemoryBarrier() __sync_synchronize()
# define PaUtil_ReadMemoryBarrier() __sync_synchronize()
# define PaUtil_WriteMemoryBarrier() __sync_synchronize()
/* as a fallback, GCC understands volatile asm and "memory" to mean it
* should not reorder memory read/writes */
/* Note that it is not clear that any compiler actually defines __PPC__,
* it can probably removed safely. */
# elif defined( __ppc__ ) || defined( __powerpc__) || defined( __PPC__ )
# define PaUtil_FullMemoryBarrier() asm volatile("sync":::"memory")
# define PaUtil_ReadMemoryBarrier() asm volatile("sync":::"memory")
# define PaUtil_WriteMemoryBarrier() asm volatile("sync":::"memory")
# elif defined( __i386__ ) || defined( __i486__ ) || defined( __i586__ ) || \
defined( __i686__ ) || defined( __x86_64__ )
# define PaUtil_FullMemoryBarrier() asm volatile("mfence":::"memory")
# define PaUtil_ReadMemoryBarrier() asm volatile("lfence":::"memory")
# define PaUtil_WriteMemoryBarrier() asm volatile("sfence":::"memory")
# else
# ifdef ALLOW_SMP_DANGERS
# warning Memory barriers not defined on this system or system unknown
# warning For SMP safety, you should fix this.
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
# else
# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed.
# endif
# endif
#elif (_MSC_VER >= 1400) && !defined(_WIN32_WCE)
# include <intrin.h>
# pragma intrinsic(_ReadWriteBarrier)
# pragma intrinsic(_ReadBarrier)
# pragma intrinsic(_WriteBarrier)
/* note that MSVC intrinsics _ReadWriteBarrier(), _ReadBarrier(), _WriteBarrier() are just compiler barriers *not* memory barriers */
# define PaUtil_FullMemoryBarrier() _ReadWriteBarrier()
# define PaUtil_ReadMemoryBarrier() _ReadBarrier()
# define PaUtil_WriteMemoryBarrier() _WriteBarrier()
#elif defined(_WIN32_WCE)
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
#elif defined(_MSC_VER) || defined(__BORLANDC__)
# define PaUtil_FullMemoryBarrier() _asm { lock add [esp], 0 }
# define PaUtil_ReadMemoryBarrier() _asm { lock add [esp], 0 }
# define PaUtil_WriteMemoryBarrier() _asm { lock add [esp], 0 }
#else
# ifdef ALLOW_SMP_DANGERS
# warning Memory barriers not defined on this system or system unknown
# warning For SMP safety, you should fix this.
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
# else
# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed.
# endif
#endif

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#ifndef PA_PROCESS_H
#define PA_PROCESS_H
/*
* $Id: pa_process.h 1668 2011-05-02 17:07:11Z rossb $
* Portable Audio I/O Library callback buffer processing adapters
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2002 Phil Burk, Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Buffer Processor prototypes. A Buffer Processor performs buffer length
adaption, coordinates sample format conversion, and interleaves/deinterleaves
channels.
<h3>Overview</h3>
The "Buffer Processor" (PaUtilBufferProcessor) manages conversion of audio
data from host buffers to user buffers and back again. Where required, the
buffer processor takes care of converting between host and user sample formats,
interleaving and deinterleaving multichannel buffers, and adapting between host
and user buffers with different lengths. The buffer processor may be used with
full and half duplex streams, for both callback streams and blocking read/write
streams.
One of the important capabilities provided by the buffer processor is
the ability to adapt between user and host buffer sizes of different lengths
with minimum latency. Although this task is relatively easy to perform when
the host buffer size is an integer multiple of the user buffer size, the
problem is more complicated when this is not the case - especially for
full-duplex callback streams. Where necessary the adaption is implemented by
internally buffering some input and/or output data. The buffer adation
algorithm used by the buffer processor was originally implemented by
Stephan Letz for the ASIO version of PortAudio, and is described in his
Callback_adaption_.pdf which is included in the distribution.
The buffer processor performs sample conversion using the functions provided
by pa_converters.c.
The following sections provide an overview of how to use the buffer processor.
Interested readers are advised to consult the host API implementations for
examples of buffer processor usage.
<h4>Initialization, resetting and termination</h4>
When a stream is opened, the buffer processor should be initialized using
PaUtil_InitializeBufferProcessor. This function initializes internal state
and allocates temporary buffers as neccesary according to the supplied
configuration parameters. Some of the parameters correspond to those requested
by the user in their call to Pa_OpenStream(), others reflect the requirements
of the host API implementation - they indicate host buffer sizes, formats,
and the type of buffering which the Host API uses. The buffer processor should
be initialized for callback streams and blocking read/write streams.
Call PaUtil_ResetBufferProcessor to clear any sample data which is present
in the buffer processor before starting to use it (for example when
Pa_StartStream is called).
When the buffer processor is no longer used call
PaUtil_TerminateBufferProcessor.
<h4>Using the buffer processor for a callback stream</h4>
The buffer processor's role in a callback stream is to take host input buffers
process them with the stream callback, and fill host output buffers. For a
full duplex stream, the buffer processor handles input and output simultaneously
due to the requirements of the minimum-latency buffer adation algorithm.
When a host buffer becomes available, the implementation should call
the buffer processor to process the buffer. The buffer processor calls the
stream callback to consume and/or produce audio data as necessary. The buffer
processor will convert sample formats, interleave/deinterleave channels,
and slice or chunk the data to the appropriate buffer lengths according to
the requirements of the stream callback and the host API.
To process a host buffer (or a pair of host buffers for a full-duplex stream)
use the following calling sequence:
-# Call PaUtil_BeginBufferProcessing
-# For a stream which takes input:
- Call PaUtil_SetInputFrameCount with the number of frames in the host input
buffer.
- Call one of the following functions one or more times to tell the
buffer processor about the host input buffer(s): PaUtil_SetInputChannel,
PaUtil_SetInterleavedInputChannels, PaUtil_SetNonInterleavedInputChannel.
Which function you call will depend on whether the host buffer(s) are
interleaved or not.
- If the available host data is split accross two buffers (for example a
data range at the end of a circular buffer and another range at the
beginning of the circular buffer), also call
PaUtil_Set2ndInputFrameCount, PaUtil_Set2ndInputChannel,
PaUtil_Set2ndInterleavedInputChannels,
PaUtil_Set2ndNonInterleavedInputChannel as necessary to tell the buffer
processor about the second buffer.
-# For a stream which generates output:
- Call PaUtil_SetOutputFrameCount with the number of frames in the host
output buffer.
- Call one of the following functions one or more times to tell the
buffer processor about the host output buffer(s): PaUtil_SetOutputChannel,
PaUtil_SetInterleavedOutputChannels, PaUtil_SetNonInterleavedOutputChannel.
Which function you call will depend on whether the host buffer(s) are
interleaved or not.
- If the available host output buffer space is split accross two buffers
(for example a data range at the end of a circular buffer and another
range at the beginning of the circular buffer), call
PaUtil_Set2ndOutputFrameCount, PaUtil_Set2ndOutputChannel,
PaUtil_Set2ndInterleavedOutputChannels,
PaUtil_Set2ndNonInterleavedOutputChannel as necessary to tell the buffer
processor about the second buffer.
-# Call PaUtil_EndBufferProcessing, this function performs the actual data
conversion and processing.
<h4>Using the buffer processor for a blocking read/write stream</h4>
Blocking read/write streams use the buffer processor to convert and copy user
output data to a host buffer, and to convert and copy host input data to
the user's buffer. The buffer processor does not perform any buffer adaption.
When using the buffer processor in a blocking read/write stream the input and
output conversion are performed separately by the PaUtil_CopyInput and
PaUtil_CopyOutput functions.
To copy data from a host input buffer to the buffer(s) which the user supplies
to Pa_ReadStream, use the following calling sequence.
- Repeat the following three steps until the user buffer(s) have been filled
with samples from the host input buffers:
-# Call PaUtil_SetInputFrameCount with the number of frames in the host
input buffer.
-# Call one of the following functions one or more times to tell the
buffer processor about the host input buffer(s): PaUtil_SetInputChannel,
PaUtil_SetInterleavedInputChannels, PaUtil_SetNonInterleavedInputChannel.
Which function you call will depend on whether the host buffer(s) are
interleaved or not.
-# Call PaUtil_CopyInput with the user buffer pointer (or a copy of the
array of buffer pointers for a non-interleaved stream) passed to
Pa_ReadStream, along with the number of frames in the user buffer(s).
Be careful to pass a <i>copy</i> of the user buffer pointers to
PaUtil_CopyInput because PaUtil_CopyInput advances the pointers to
the start of the next region to copy.
- PaUtil_CopyInput will not copy more data than is available in the
host buffer(s), so the above steps need to be repeated until the user
buffer(s) are full.
To copy data to the host output buffer from the user buffers(s) supplied
to Pa_WriteStream use the following calling sequence.
- Repeat the following three steps until all frames from the user buffer(s)
have been copied to the host API:
-# Call PaUtil_SetOutputFrameCount with the number of frames in the host
output buffer.
-# Call one of the following functions one or more times to tell the
buffer processor about the host output buffer(s): PaUtil_SetOutputChannel,
PaUtil_SetInterleavedOutputChannels, PaUtil_SetNonInterleavedOutputChannel.
Which function you call will depend on whether the host buffer(s) are
interleaved or not.
-# Call PaUtil_CopyOutput with the user buffer pointer (or a copy of the
array of buffer pointers for a non-interleaved stream) passed to
Pa_WriteStream, along with the number of frames in the user buffer(s).
Be careful to pass a <i>copy</i> of the user buffer pointers to
PaUtil_CopyOutput because PaUtil_CopyOutput advances the pointers to
the start of the next region to copy.
- PaUtil_CopyOutput will not copy more data than fits in the host buffer(s),
so the above steps need to be repeated until all user data is copied.
*/
#include "portaudio.h"
#include "pa_converters.h"
#include "pa_dither.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/** @brief Mode flag passed to PaUtil_InitializeBufferProcessor indicating the type
of buffering that the host API uses.
The mode used depends on whether the host API or the implementation manages
the buffers, and how these buffers are used (scatter gather, circular buffer).
*/
typedef enum {
/** The host buffer size is a fixed known size. */
paUtilFixedHostBufferSize,
/** The host buffer size may vary, but has a known maximum size. */
paUtilBoundedHostBufferSize,
/** Nothing is known about the host buffer size. */
paUtilUnknownHostBufferSize,
/** The host buffer size varies, and the client does not require the buffer
processor to consume all of the input and fill all of the output buffer. This
is useful when the implementation has access to the host API's circular buffer
and only needs to consume/fill some of it, not necessarily all of it, with each
call to the buffer processor. This is the only mode where
PaUtil_EndBufferProcessing() may not consume the whole buffer.
*/
paUtilVariableHostBufferSizePartialUsageAllowed
}PaUtilHostBufferSizeMode;
/** @brief An auxilliary data structure used internally by the buffer processor
to represent host input and output buffers. */
typedef struct PaUtilChannelDescriptor{
void *data;
unsigned int stride; /**< stride in samples, not bytes */
}PaUtilChannelDescriptor;
/** @brief The main buffer processor data structure.
Allocate one of these, initialize it with PaUtil_InitializeBufferProcessor
and terminate it with PaUtil_TerminateBufferProcessor.
*/
typedef struct {
unsigned long framesPerUserBuffer;
unsigned long framesPerHostBuffer;
PaUtilHostBufferSizeMode hostBufferSizeMode;
int useNonAdaptingProcess;
int userOutputSampleFormatIsEqualToHost;
int userInputSampleFormatIsEqualToHost;
unsigned long framesPerTempBuffer;
unsigned int inputChannelCount;
unsigned int bytesPerHostInputSample;
unsigned int bytesPerUserInputSample;
int userInputIsInterleaved;
PaUtilConverter *inputConverter;
PaUtilZeroer *inputZeroer;
unsigned int outputChannelCount;
unsigned int bytesPerHostOutputSample;
unsigned int bytesPerUserOutputSample;
int userOutputIsInterleaved;
PaUtilConverter *outputConverter;
PaUtilZeroer *outputZeroer;
unsigned long initialFramesInTempInputBuffer;
unsigned long initialFramesInTempOutputBuffer;
void *tempInputBuffer; /**< used for slips, block adaption, and conversion. */
void **tempInputBufferPtrs; /**< storage for non-interleaved buffer pointers, NULL for interleaved user input */
unsigned long framesInTempInputBuffer; /**< frames remaining in input buffer from previous adaption iteration */
void *tempOutputBuffer; /**< used for slips, block adaption, and conversion. */
void **tempOutputBufferPtrs; /**< storage for non-interleaved buffer pointers, NULL for interleaved user output */
unsigned long framesInTempOutputBuffer; /**< frames remaining in input buffer from previous adaption iteration */
PaStreamCallbackTimeInfo *timeInfo;
PaStreamCallbackFlags callbackStatusFlags;
int hostInputIsInterleaved;
unsigned long hostInputFrameCount[2];
PaUtilChannelDescriptor *hostInputChannels[2]; /**< pointers to arrays of channel descriptors.
pointers are NULL for half-duplex output processing.
hostInputChannels[i].data is NULL when the caller
calls PaUtil_SetNoInput()
*/
int hostOutputIsInterleaved;
unsigned long hostOutputFrameCount[2];
PaUtilChannelDescriptor *hostOutputChannels[2]; /**< pointers to arrays of channel descriptors.
pointers are NULL for half-duplex input processing.
hostOutputChannels[i].data is NULL when the caller
calls PaUtil_SetNoOutput()
*/
PaUtilTriangularDitherGenerator ditherGenerator;
double samplePeriod;
PaStreamCallback *streamCallback;
void *userData;
} PaUtilBufferProcessor;
/** @name Initialization, termination, resetting and info */
/*@{*/
/** Initialize a buffer processor's representation stored in a
PaUtilBufferProcessor structure. Be sure to call
PaUtil_TerminateBufferProcessor after finishing with a buffer processor.
@param bufferProcessor The buffer processor structure to initialize.
@param inputChannelCount The number of input channels as passed to
Pa_OpenStream or 0 for an output-only stream.
@param userInputSampleFormat Format of user input samples, as passed to
Pa_OpenStream. This parameter is ignored for ouput-only streams.
@param hostInputSampleFormat Format of host input samples. This parameter is
ignored for output-only streams. See note about host buffer interleave below.
@param outputChannelCount The number of output channels as passed to
Pa_OpenStream or 0 for an input-only stream.
@param userOutputSampleFormat Format of user output samples, as passed to
Pa_OpenStream. This parameter is ignored for input-only streams.
@param hostOutputSampleFormat Format of host output samples. This parameter is
ignored for input-only streams. See note about host buffer interleave below.
@param sampleRate Sample rate of the stream. The more accurate this is the
better - it is used for updating time stamps when adapting buffers.
@param streamFlags Stream flags as passed to Pa_OpenStream, this parameter is
used for selecting special sample conversion options such as clipping and
dithering.
@param framesPerUserBuffer Number of frames per user buffer, as requested
by the framesPerBuffer parameter to Pa_OpenStream. This parameter may be
zero to indicate that the user will accept any (and varying) buffer sizes.
@param framesPerHostBuffer Specifies the number of frames per host buffer
for the fixed buffer size mode, and the maximum number of frames
per host buffer for the bounded host buffer size mode. It is ignored for
the other modes.
@param hostBufferSizeMode A mode flag indicating the size variability of
host buffers that will be passed to the buffer processor. See
PaUtilHostBufferSizeMode for further details.
@param streamCallback The user stream callback passed to Pa_OpenStream.
@param userData The user data field passed to Pa_OpenStream.
@note The interleave flag is ignored for host buffer formats. Host
interleave is determined by the use of different SetInput and SetOutput
functions.
@return An error code indicating whether the initialization was successful.
If the error code is not PaNoError, the buffer processor was not initialized
and should not be used.
@see Pa_OpenStream, PaUtilHostBufferSizeMode, PaUtil_TerminateBufferProcessor
*/
PaError PaUtil_InitializeBufferProcessor( PaUtilBufferProcessor* bufferProcessor,
int inputChannelCount, PaSampleFormat userInputSampleFormat,
PaSampleFormat hostInputSampleFormat,
int outputChannelCount, PaSampleFormat userOutputSampleFormat,
PaSampleFormat hostOutputSampleFormat,
double sampleRate,
PaStreamFlags streamFlags,
unsigned long framesPerUserBuffer, /* 0 indicates don't care */
unsigned long framesPerHostBuffer,
PaUtilHostBufferSizeMode hostBufferSizeMode,
PaStreamCallback *streamCallback, void *userData );
/** Terminate a buffer processor's representation. Deallocates any temporary
buffers allocated by PaUtil_InitializeBufferProcessor.
@param bufferProcessor The buffer processor structure to terminate.
@see PaUtil_InitializeBufferProcessor.
*/
void PaUtil_TerminateBufferProcessor( PaUtilBufferProcessor* bufferProcessor );
/** Clear any internally buffered data. If you call
PaUtil_InitializeBufferProcessor in your OpenStream routine, make sure you
call PaUtil_ResetBufferProcessor in your StartStream call.
@param bufferProcessor The buffer processor to reset.
*/
void PaUtil_ResetBufferProcessor( PaUtilBufferProcessor* bufferProcessor );
/** Retrieve the input latency of a buffer processor, in frames.
@param bufferProcessor The buffer processor examine.
@return The input latency introduced by the buffer processor, in frames.
@see PaUtil_GetBufferProcessorOutputLatencyFrames
*/
unsigned long PaUtil_GetBufferProcessorInputLatencyFrames( PaUtilBufferProcessor* bufferProcessor );
/** Retrieve the output latency of a buffer processor, in frames.
@param bufferProcessor The buffer processor examine.
@return The output latency introduced by the buffer processor, in frames.
@see PaUtil_GetBufferProcessorInputLatencyFrames
*/
unsigned long PaUtil_GetBufferProcessorOutputLatencyFrames( PaUtilBufferProcessor* bufferProcessor );
/*@}*/
/** @name Host buffer pointer configuration
Functions to set host input and output buffers, used by both callback streams
and blocking read/write streams.
*/
/*@{*/
/** Set the number of frames in the input host buffer(s) specified by the
PaUtil_Set*InputChannel functions.
@param bufferProcessor The buffer processor.
@param frameCount The number of host input frames. A 0 frameCount indicates to
use the framesPerHostBuffer value passed to PaUtil_InitializeBufferProcessor.
@see PaUtil_SetNoInput, PaUtil_SetInputChannel,
PaUtil_SetInterleavedInputChannels, PaUtil_SetNonInterleavedInputChannel
*/
void PaUtil_SetInputFrameCount( PaUtilBufferProcessor* bufferProcessor,
unsigned long frameCount );
/** Indicate that no input is avalable. This function should be used when
priming the output of a full-duplex stream opened with the
paPrimeOutputBuffersUsingStreamCallback flag. Note that it is not necessary
to call this or any othe PaUtil_Set*Input* functions for ouput-only streams.
@param bufferProcessor The buffer processor.
*/
void PaUtil_SetNoInput( PaUtilBufferProcessor* bufferProcessor );
/** Provide the buffer processor with a pointer to a host input channel.
@param bufferProcessor The buffer processor.
@param channel The channel number.
@param data The buffer.
@param stride The stride from one sample to the next, in samples. For
interleaved host buffers, the stride will usually be the same as the number of
channels in the buffer.
*/
void PaUtil_SetInputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data, unsigned int stride );
/** Provide the buffer processor with a pointer to an number of interleaved
host input channels.
@param bufferProcessor The buffer processor.
@param firstChannel The first channel number.
@param data The buffer.
@param channelCount The number of interleaved channels in the buffer. If
channelCount is zero, the number of channels specified to
PaUtil_InitializeBufferProcessor will be used.
*/
void PaUtil_SetInterleavedInputChannels( PaUtilBufferProcessor* bufferProcessor,
unsigned int firstChannel, void *data, unsigned int channelCount );
/** Provide the buffer processor with a pointer to one non-interleaved host
output channel.
@param bufferProcessor The buffer processor.
@param channel The channel number.
@param data The buffer.
*/
void PaUtil_SetNonInterleavedInputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data );
/** Use for the second buffer half when the input buffer is split in two halves.
@see PaUtil_SetInputFrameCount
*/
void PaUtil_Set2ndInputFrameCount( PaUtilBufferProcessor* bufferProcessor,
unsigned long frameCount );
/** Use for the second buffer half when the input buffer is split in two halves.
@see PaUtil_SetInputChannel
*/
void PaUtil_Set2ndInputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data, unsigned int stride );
/** Use for the second buffer half when the input buffer is split in two halves.
@see PaUtil_SetInterleavedInputChannels
*/
void PaUtil_Set2ndInterleavedInputChannels( PaUtilBufferProcessor* bufferProcessor,
unsigned int firstChannel, void *data, unsigned int channelCount );
/** Use for the second buffer half when the input buffer is split in two halves.
@see PaUtil_SetNonInterleavedInputChannel
*/
void PaUtil_Set2ndNonInterleavedInputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data );
/** Set the number of frames in the output host buffer(s) specified by the
PaUtil_Set*OutputChannel functions.
@param bufferProcessor The buffer processor.
@param frameCount The number of host output frames. A 0 frameCount indicates to
use the framesPerHostBuffer value passed to PaUtil_InitializeBufferProcessor.
@see PaUtil_SetOutputChannel, PaUtil_SetInterleavedOutputChannels,
PaUtil_SetNonInterleavedOutputChannel
*/
void PaUtil_SetOutputFrameCount( PaUtilBufferProcessor* bufferProcessor,
unsigned long frameCount );
/** Indicate that the output will be discarded. This function should be used
when implementing the paNeverDropInput mode for full duplex streams.
@param bufferProcessor The buffer processor.
*/
void PaUtil_SetNoOutput( PaUtilBufferProcessor* bufferProcessor );
/** Provide the buffer processor with a pointer to a host output channel.
@param bufferProcessor The buffer processor.
@param channel The channel number.
@param data The buffer.
@param stride The stride from one sample to the next, in samples. For
interleaved host buffers, the stride will usually be the same as the number of
channels in the buffer.
*/
void PaUtil_SetOutputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data, unsigned int stride );
/** Provide the buffer processor with a pointer to a number of interleaved
host output channels.
@param bufferProcessor The buffer processor.
@param firstChannel The first channel number.
@param data The buffer.
@param channelCount The number of interleaved channels in the buffer. If
channelCount is zero, the number of channels specified to
PaUtil_InitializeBufferProcessor will be used.
*/
void PaUtil_SetInterleavedOutputChannels( PaUtilBufferProcessor* bufferProcessor,
unsigned int firstChannel, void *data, unsigned int channelCount );
/** Provide the buffer processor with a pointer to one non-interleaved host
output channel.
@param bufferProcessor The buffer processor.
@param channel The channel number.
@param data The buffer.
*/
void PaUtil_SetNonInterleavedOutputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data );
/** Use for the second buffer half when the output buffer is split in two halves.
@see PaUtil_SetOutputFrameCount
*/
void PaUtil_Set2ndOutputFrameCount( PaUtilBufferProcessor* bufferProcessor,
unsigned long frameCount );
/** Use for the second buffer half when the output buffer is split in two halves.
@see PaUtil_SetOutputChannel
*/
void PaUtil_Set2ndOutputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data, unsigned int stride );
/** Use for the second buffer half when the output buffer is split in two halves.
@see PaUtil_SetInterleavedOutputChannels
*/
void PaUtil_Set2ndInterleavedOutputChannels( PaUtilBufferProcessor* bufferProcessor,
unsigned int firstChannel, void *data, unsigned int channelCount );
/** Use for the second buffer half when the output buffer is split in two halves.
@see PaUtil_SetNonInterleavedOutputChannel
*/
void PaUtil_Set2ndNonInterleavedOutputChannel( PaUtilBufferProcessor* bufferProcessor,
unsigned int channel, void *data );
/*@}*/
/** @name Buffer processing functions for callback streams
*/
/*@{*/
/** Commence processing a host buffer (or a pair of host buffers in the
full-duplex case) for a callback stream.
@param bufferProcessor The buffer processor.
@param timeInfo Timing information for the first sample of the host
buffer(s). This information may be adjusted when buffer adaption is being
performed.
@param callbackStatusFlags Flags indicating whether underruns and overruns
have occurred since the last time the buffer processor was called.
*/
void PaUtil_BeginBufferProcessing( PaUtilBufferProcessor* bufferProcessor,
PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags callbackStatusFlags );
/** Finish processing a host buffer (or a pair of host buffers in the
full-duplex case) for a callback stream.
@param bufferProcessor The buffer processor.
@param callbackResult On input, indicates a previous callback result, and on
exit, the result of the user stream callback, if it is called.
On entry callbackResult should contain one of { paContinue, paComplete, or
paAbort}. If paComplete is passed, the stream callback will not be called
but any audio that was generated by previous stream callbacks will be copied
to the output buffer(s). You can check whether the buffer processor's internal
buffer is empty by calling PaUtil_IsBufferProcessorOutputEmpty.
If the stream callback is called its result is stored in *callbackResult. If
the stream callback returns paComplete or paAbort, all output buffers will be
full of valid data - some of which may be zeros to acount for data that
wasn't generated by the terminating callback.
@return The number of frames processed. This usually corresponds to the
number of frames specified by the PaUtil_Set*FrameCount functions, exept in
the paUtilVariableHostBufferSizePartialUsageAllowed buffer size mode when a
smaller value may be returned.
*/
unsigned long PaUtil_EndBufferProcessing( PaUtilBufferProcessor* bufferProcessor,
int *callbackResult );
/** Determine whether any callback generated output remains in the bufffer
processor's internal buffers. This method may be used to determine when to
continue calling PaUtil_EndBufferProcessing() after the callback has returned
a callbackResult of paComplete.
@param bufferProcessor The buffer processor.
@return Returns non-zero when callback generated output remains in the internal
buffer and zero (0) when there internal buffer contains no callback generated
data.
*/
int PaUtil_IsBufferProcessorOutputEmpty( PaUtilBufferProcessor* bufferProcessor );
/*@}*/
/** @name Buffer processing functions for blocking read/write streams
*/
/*@{*/
/** Copy samples from host input channels set up by the PaUtil_Set*InputChannels
functions to a user supplied buffer. This function is intended for use with
blocking read/write streams. Copies the minimum of the number of
user frames (specified by the frameCount parameter) and the number of available
host frames (specified in a previous call to SetInputFrameCount()).
@param bufferProcessor The buffer processor.
@param buffer A pointer to the user buffer pointer, or a pointer to a pointer
to an array of user buffer pointers for a non-interleaved stream. It is
important that this parameter points to a copy of the user buffer pointers,
not to the actual user buffer pointers, because this function updates the
pointers before returning.
@param frameCount The number of frames of data in the buffer(s) pointed to by
the buffer parameter.
@return The number of frames copied. The buffer pointer(s) pointed to by the
buffer parameter are advanced to point to the frame(s) following the last one
filled.
*/
unsigned long PaUtil_CopyInput( PaUtilBufferProcessor* bufferProcessor,
void **buffer, unsigned long frameCount );
/* Copy samples from a user supplied buffer to host output channels set up by
the PaUtil_Set*OutputChannels functions. This function is intended for use with
blocking read/write streams. Copies the minimum of the number of
user frames (specified by the frameCount parameter) and the number of
host frames (specified in a previous call to SetOutputFrameCount()).
@param bufferProcessor The buffer processor.
@param buffer A pointer to the user buffer pointer, or a pointer to a pointer
to an array of user buffer pointers for a non-interleaved stream. It is
important that this parameter points to a copy of the user buffer pointers,
not to the actual user buffer pointers, because this function updates the
pointers before returning.
@param frameCount The number of frames of data in the buffer(s) pointed to by
the buffer parameter.
@return The number of frames copied. The buffer pointer(s) pointed to by the
buffer parameter are advanced to point to the frame(s) following the last one
copied.
*/
unsigned long PaUtil_CopyOutput( PaUtilBufferProcessor* bufferProcessor,
const void ** buffer, unsigned long frameCount );
/* Zero samples in host output channels set up by the PaUtil_Set*OutputChannels
functions. This function is useful for flushing streams.
Zeros the minimum of frameCount and the number of host frames specified in a
previous call to SetOutputFrameCount().
@param bufferProcessor The buffer processor.
@param frameCount The maximum number of frames to zero.
@return The number of frames zeroed.
*/
unsigned long PaUtil_ZeroOutput( PaUtilBufferProcessor* bufferProcessor,
unsigned long frameCount );
/*@}*/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_PROCESS_H */

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#ifndef PA_RINGBUFFER_H
#define PA_RINGBUFFER_H
/*
* $Id: pa_ringbuffer.h 1873 2012-10-07 19:00:11Z philburk $
* Portable Audio I/O Library
* Ring Buffer utility.
*
* Author: Phil Burk, http://www.softsynth.com
* modified for SMP safety on OS X by Bjorn Roche.
* also allowed for const where possible.
* modified for multiple-byte-sized data elements by Sven Fischer
*
* Note that this is safe only for a single-thread reader
* and a single-thread writer.
*
* This program is distributed with the PortAudio Portable Audio Library.
* For more information see: http://www.portaudio.com
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Single-reader single-writer lock-free ring buffer
PaUtilRingBuffer is a ring buffer used to transport samples between
different execution contexts (threads, OS callbacks, interrupt handlers)
without requiring the use of any locks. This only works when there is
a single reader and a single writer (ie. one thread or callback writes
to the ring buffer, another thread or callback reads from it).
The PaUtilRingBuffer structure manages a ring buffer containing N
elements, where N must be a power of two. An element may be any size
(specified in bytes).
The memory area used to store the buffer elements must be allocated by
the client prior to calling PaUtil_InitializeRingBuffer() and must outlive
the use of the ring buffer.
@note The ring buffer functions are not normally exposed in the PortAudio libraries.
If you want to call them then you will need to add pa_ringbuffer.c to your application source code.
*/
#if defined(__APPLE__)
#include <sys/types.h>
typedef int32_t ring_buffer_size_t;
#elif defined( __GNUC__ )
typedef long ring_buffer_size_t;
#elif (_MSC_VER >= 1400)
typedef long ring_buffer_size_t;
#elif defined(_MSC_VER) || defined(__BORLANDC__)
typedef long ring_buffer_size_t;
#else
typedef long ring_buffer_size_t;
#endif
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
typedef struct PaUtilRingBuffer
{
ring_buffer_size_t bufferSize; /**< Number of elements in FIFO. Power of 2. Set by PaUtil_InitRingBuffer. */
volatile ring_buffer_size_t writeIndex; /**< Index of next writable element. Set by PaUtil_AdvanceRingBufferWriteIndex. */
volatile ring_buffer_size_t readIndex; /**< Index of next readable element. Set by PaUtil_AdvanceRingBufferReadIndex. */
ring_buffer_size_t bigMask; /**< Used for wrapping indices with extra bit to distinguish full/empty. */
ring_buffer_size_t smallMask; /**< Used for fitting indices to buffer. */
ring_buffer_size_t elementSizeBytes; /**< Number of bytes per element. */
char *buffer; /**< Pointer to the buffer containing the actual data. */
}PaUtilRingBuffer;
/** Initialize Ring Buffer to empty state ready to have elements written to it.
@param rbuf The ring buffer.
@param elementSizeBytes The size of a single data element in bytes.
@param elementCount The number of elements in the buffer (must be a power of 2).
@param dataPtr A pointer to a previously allocated area where the data
will be maintained. It must be elementCount*elementSizeBytes long.
@return -1 if elementCount is not a power of 2, otherwise 0.
*/
ring_buffer_size_t PaUtil_InitializeRingBuffer( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementSizeBytes, ring_buffer_size_t elementCount, void *dataPtr );
/** Reset buffer to empty. Should only be called when buffer is NOT being read or written.
@param rbuf The ring buffer.
*/
void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf );
/** Retrieve the number of elements available in the ring buffer for writing.
@param rbuf The ring buffer.
@return The number of elements available for writing.
*/
ring_buffer_size_t PaUtil_GetRingBufferWriteAvailable( const PaUtilRingBuffer *rbuf );
/** Retrieve the number of elements available in the ring buffer for reading.
@param rbuf The ring buffer.
@return The number of elements available for reading.
*/
ring_buffer_size_t PaUtil_GetRingBufferReadAvailable( const PaUtilRingBuffer *rbuf );
/** Write data to the ring buffer.
@param rbuf The ring buffer.
@param data The address of new data to write to the buffer.
@param elementCount The number of elements to be written.
@return The number of elements written.
*/
ring_buffer_size_t PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, ring_buffer_size_t elementCount );
/** Read data from the ring buffer.
@param rbuf The ring buffer.
@param data The address where the data should be stored.
@param elementCount The number of elements to be read.
@return The number of elements read.
*/
ring_buffer_size_t PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, ring_buffer_size_t elementCount );
/** Get address of region(s) to which we can write data.
@param rbuf The ring buffer.
@param elementCount The number of elements desired.
@param dataPtr1 The address where the first (or only) region pointer will be
stored.
@param sizePtr1 The address where the first (or only) region length will be
stored.
@param dataPtr2 The address where the second region pointer will be stored if
the first region is too small to satisfy elementCount.
@param sizePtr2 The address where the second region length will be stored if
the first region is too small to satisfy elementCount.
@return The room available to be written or elementCount, whichever is smaller.
*/
ring_buffer_size_t PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount,
void **dataPtr1, ring_buffer_size_t *sizePtr1,
void **dataPtr2, ring_buffer_size_t *sizePtr2 );
/** Advance the write index to the next location to be written.
@param rbuf The ring buffer.
@param elementCount The number of elements to advance.
@return The new position.
*/
ring_buffer_size_t PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount );
/** Get address of region(s) from which we can read data.
@param rbuf The ring buffer.
@param elementCount The number of elements desired.
@param dataPtr1 The address where the first (or only) region pointer will be
stored.
@param sizePtr1 The address where the first (or only) region length will be
stored.
@param dataPtr2 The address where the second region pointer will be stored if
the first region is too small to satisfy elementCount.
@param sizePtr2 The address where the second region length will be stored if
the first region is too small to satisfy elementCount.
@return The number of elements available for reading.
*/
ring_buffer_size_t PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount,
void **dataPtr1, ring_buffer_size_t *sizePtr1,
void **dataPtr2, ring_buffer_size_t *sizePtr2 );
/** Advance the read index to the next location to be read.
@param rbuf The ring buffer.
@param elementCount The number of elements to advance.
@return The new position.
*/
ring_buffer_size_t PaUtil_AdvanceRingBufferReadIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_RINGBUFFER_H */

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#ifndef PA_STREAM_H
#define PA_STREAM_H
/*
* $Id: pa_stream.h 1339 2008-02-15 07:50:33Z rossb $
* Portable Audio I/O Library
* stream interface
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2008 Ross Bencina, Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Stream interfaces, representation structures and helper functions
used to interface between pa_front.c host API implementations.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#define PA_STREAM_MAGIC (0x18273645)
/** A structure representing an (abstract) interface to a host API. Contains
pointers to functions which implement the interface.
All PaStreamInterface functions are guaranteed to be called with a non-null,
valid stream parameter.
*/
typedef struct {
PaError (*Close)( PaStream* stream );
PaError (*Start)( PaStream *stream );
PaError (*Stop)( PaStream *stream );
PaError (*Abort)( PaStream *stream );
PaError (*IsStopped)( PaStream *stream );
PaError (*IsActive)( PaStream *stream );
PaTime (*GetTime)( PaStream *stream );
double (*GetCpuLoad)( PaStream* stream );
PaError (*Read)( PaStream* stream, void *buffer, unsigned long frames );
PaError (*Write)( PaStream* stream, const void *buffer, unsigned long frames );
signed long (*GetReadAvailable)( PaStream* stream );
signed long (*GetWriteAvailable)( PaStream* stream );
} PaUtilStreamInterface;
/** Initialize the fields of a PaUtilStreamInterface structure.
*/
void PaUtil_InitializeStreamInterface( PaUtilStreamInterface *streamInterface,
PaError (*Close)( PaStream* ),
PaError (*Start)( PaStream* ),
PaError (*Stop)( PaStream* ),
PaError (*Abort)( PaStream* ),
PaError (*IsStopped)( PaStream* ),
PaError (*IsActive)( PaStream* ),
PaTime (*GetTime)( PaStream* ),
double (*GetCpuLoad)( PaStream* ),
PaError (*Read)( PaStream* stream, void *buffer, unsigned long frames ),
PaError (*Write)( PaStream* stream, const void *buffer, unsigned long frames ),
signed long (*GetReadAvailable)( PaStream* stream ),
signed long (*GetWriteAvailable)( PaStream* stream ) );
/** Dummy Read function for use in interfaces to a callback based streams.
Pass to the Read parameter of PaUtil_InitializeStreamInterface.
@return An error code indicating that the function has no effect
because the stream is a callback stream.
*/
PaError PaUtil_DummyRead( PaStream* stream,
void *buffer,
unsigned long frames );
/** Dummy Write function for use in an interfaces to callback based streams.
Pass to the Write parameter of PaUtil_InitializeStreamInterface.
@return An error code indicating that the function has no effect
because the stream is a callback stream.
*/
PaError PaUtil_DummyWrite( PaStream* stream,
const void *buffer,
unsigned long frames );
/** Dummy GetReadAvailable function for use in interfaces to callback based
streams. Pass to the GetReadAvailable parameter of PaUtil_InitializeStreamInterface.
@return An error code indicating that the function has no effect
because the stream is a callback stream.
*/
signed long PaUtil_DummyGetReadAvailable( PaStream* stream );
/** Dummy GetWriteAvailable function for use in interfaces to callback based
streams. Pass to the GetWriteAvailable parameter of PaUtil_InitializeStreamInterface.
@return An error code indicating that the function has no effect
because the stream is a callback stream.
*/
signed long PaUtil_DummyGetWriteAvailable( PaStream* stream );
/** Dummy GetCpuLoad function for use in an interface to a read/write stream.
Pass to the GetCpuLoad parameter of PaUtil_InitializeStreamInterface.
@return Returns 0.
*/
double PaUtil_DummyGetCpuLoad( PaStream* stream );
/** Non host specific data for a stream. This data is used by pa_front to
forward to the appropriate functions in the streamInterface structure.
*/
typedef struct PaUtilStreamRepresentation {
unsigned long magic; /**< set to PA_STREAM_MAGIC */
struct PaUtilStreamRepresentation *nextOpenStream; /**< field used by multi-api code */
PaUtilStreamInterface *streamInterface;
PaStreamCallback *streamCallback;
PaStreamFinishedCallback *streamFinishedCallback;
void *userData;
PaStreamInfo streamInfo;
} PaUtilStreamRepresentation;
/** Initialize a PaUtilStreamRepresentation structure.
@see PaUtil_InitializeStreamRepresentation
*/
void PaUtil_InitializeStreamRepresentation(
PaUtilStreamRepresentation *streamRepresentation,
PaUtilStreamInterface *streamInterface,
PaStreamCallback *streamCallback,
void *userData );
/** Clean up a PaUtilStreamRepresentation structure previously initialized
by a call to PaUtil_InitializeStreamRepresentation.
@see PaUtil_InitializeStreamRepresentation
*/
void PaUtil_TerminateStreamRepresentation( PaUtilStreamRepresentation *streamRepresentation );
/** Check that the stream pointer is valid.
@return Returns paNoError if the stream pointer appears to be OK, otherwise
returns an error indicating the cause of failure.
*/
PaError PaUtil_ValidateStreamPointer( PaStream *stream );
/** Cast an opaque stream pointer into a pointer to a PaUtilStreamRepresentation.
@see PaUtilStreamRepresentation
*/
#define PA_STREAM_REP( stream )\
((PaUtilStreamRepresentation*) (stream) )
/** Cast an opaque stream pointer into a pointer to a PaUtilStreamInterface.
@see PaUtilStreamRepresentation, PaUtilStreamInterface
*/
#define PA_STREAM_INTERFACE( stream )\
PA_STREAM_REP( (stream) )->streamInterface
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_STREAM_H */

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#ifndef PA_TRACE_H
#define PA_TRACE_H
/*
* $Id: pa_trace.h 1812 2012-02-14 09:32:57Z robiwan $
* Portable Audio I/O Library Trace Facility
* Store trace information in real-time for later printing.
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2000 Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Real-time safe event trace logging facility for debugging.
Allows data to be logged to a fixed size trace buffer in a real-time
execution context (such as at interrupt time). Each log entry consists
of a message comprising a string pointer and an int. The trace buffer
may be dumped to stdout later.
This facility is only active if PA_TRACE_REALTIME_EVENTS is set to 1,
otherwise the trace functions expand to no-ops.
@fn PaUtil_ResetTraceMessages
@brief Clear the trace buffer.
@fn PaUtil_AddTraceMessage
@brief Add a message to the trace buffer. A message consists of string and an int.
@param msg The string pointer must remain valid until PaUtil_DumpTraceMessages
is called. As a result, usually only string literals should be passed as
the msg parameter.
@fn PaUtil_DumpTraceMessages
@brief Print all messages in the trace buffer to stdout and clear the trace buffer.
*/
#ifndef PA_TRACE_REALTIME_EVENTS
#define PA_TRACE_REALTIME_EVENTS (0) /**< Set to 1 to enable logging using the trace functions defined below */
#endif
#ifndef PA_MAX_TRACE_RECORDS
#define PA_MAX_TRACE_RECORDS (2048) /**< Maximum number of records stored in trace buffer */
#endif
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#if PA_TRACE_REALTIME_EVENTS
void PaUtil_ResetTraceMessages();
void PaUtil_AddTraceMessage( const char *msg, int data );
void PaUtil_DumpTraceMessages();
/* Alternative interface */
typedef void* LogHandle;
int PaUtil_InitializeHighSpeedLog(LogHandle* phLog, unsigned maxSizeInBytes);
void PaUtil_ResetHighSpeedLogTimeRef(LogHandle hLog);
int PaUtil_AddHighSpeedLogMessage(LogHandle hLog, const char* fmt, ...);
void PaUtil_DumpHighSpeedLog(LogHandle hLog, const char* fileName);
void PaUtil_DiscardHighSpeedLog(LogHandle hLog);
#else
#define PaUtil_ResetTraceMessages() /* noop */
#define PaUtil_AddTraceMessage(msg,data) /* noop */
#define PaUtil_DumpTraceMessages() /* noop */
#define PaUtil_InitializeHighSpeedLog(phLog, maxSizeInBytes) (0)
#define PaUtil_ResetHighSpeedLogTimeRef(hLog)
#define PaUtil_AddHighSpeedLogMessage(...) (0)
#define PaUtil_DumpHighSpeedLog(hLog, fileName)
#define PaUtil_DiscardHighSpeedLog(hLog)
#endif
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_TRACE_H */

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#ifndef PA_UTIL_H
#define PA_UTIL_H
/*
* $Id: pa_util.h 1584 2011-02-02 18:58:17Z rossb $
* Portable Audio I/O Library implementation utilities header
* common implementation utilities and interfaces
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2008 Ross Bencina, Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup common_src
@brief Prototypes for utility functions used by PortAudio implementations.
Some functions declared here are defined in pa_front.c while others
are implemented separately for each platform.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
struct PaUtilHostApiRepresentation;
/** Retrieve a specific host API representation. This function can be used
by implementations to retrieve a pointer to their representation in
host api specific extension functions which aren't passed a rep pointer
by pa_front.c.
@param hostApi A pointer to a host API represenation pointer. Apon success
this will receive the requested representation pointer.
@param type A valid host API type identifier.
@returns An error code. If the result is PaNoError then a pointer to the
requested host API representation will be stored in *hostApi. If the host API
specified by type is not found, this function returns paHostApiNotFound.
*/
PaError PaUtil_GetHostApiRepresentation( struct PaUtilHostApiRepresentation **hostApi,
PaHostApiTypeId type );
/** Convert a PortAudio device index into a host API specific device index.
@param hostApiDevice Pointer to a device index, on success this will recieve the
converted device index value.
@param device The PortAudio device index to convert.
@param hostApi The host api which the index should be converted for.
@returns On success returns PaNoError and places the converted index in the
hostApiDevice parameter.
*/
PaError PaUtil_DeviceIndexToHostApiDeviceIndex(
PaDeviceIndex *hostApiDevice, PaDeviceIndex device,
struct PaUtilHostApiRepresentation *hostApi );
/** Set the host error information returned by Pa_GetLastHostErrorInfo. This
function and the paUnanticipatedHostError error code should be used as a
last resort. Implementors should use existing PA error codes where possible,
or nominate new ones. Note that at it is always better to use
PaUtil_SetLastHostErrorInfo() and paUnanticipatedHostError than to return an
ambiguous or inaccurate PaError code.
@param hostApiType The host API which encountered the error (ie of the caller)
@param errorCode The error code returned by the native API function.
@param errorText A string describing the error. PaUtil_SetLastHostErrorInfo
makes a copy of the string, so it is not necessary for the pointer to remain
valid after the call to PaUtil_SetLastHostErrorInfo() returns.
*/
void PaUtil_SetLastHostErrorInfo( PaHostApiTypeId hostApiType, long errorCode,
const char *errorText );
/* the following functions are implemented in a platform platform specific
.c file
*/
/** Allocate size bytes, guaranteed to be aligned to a FIXME byte boundary */
void *PaUtil_AllocateMemory( long size );
/** Realease block if non-NULL. block may be NULL */
void PaUtil_FreeMemory( void *block );
/** Return the number of currently allocated blocks. This function can be
used for detecting memory leaks.
@note Allocations will only be tracked if PA_TRACK_MEMORY is #defined. If
it isn't, this function will always return 0.
*/
int PaUtil_CountCurrentlyAllocatedBlocks( void );
/** Initialize the clock used by PaUtil_GetTime(). Call this before calling
PaUtil_GetTime.
@see PaUtil_GetTime
*/
void PaUtil_InitializeClock( void );
/** Return the system time in seconds. Used to implement CPU load functions
@see PaUtil_InitializeClock
*/
double PaUtil_GetTime( void );
/* void Pa_Sleep( long msec ); must also be implemented in per-platform .c file */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_UTIL_H */

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#ifndef PA_WIN_DS_H
#define PA_WIN_DS_H
/*
* $Id: $
* PortAudio Portable Real-Time Audio Library
* DirectSound specific extensions
*
* Copyright (c) 1999-2007 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief DirectSound-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#include "pa_win_waveformat.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#define paWinDirectSoundUseLowLevelLatencyParameters (0x01)
#define paWinDirectSoundUseChannelMask (0x04)
typedef struct PaWinDirectSoundStreamInfo{
unsigned long size; /**< sizeof(PaWinDirectSoundStreamInfo) */
PaHostApiTypeId hostApiType; /**< paDirectSound */
unsigned long version; /**< 2 */
unsigned long flags; /**< enable other features of this struct */
/**
low-level latency setting support
Sets the size of the DirectSound host buffer.
When flags contains the paWinDirectSoundUseLowLevelLatencyParameters
this size will be used instead of interpreting the generic latency
parameters to Pa_OpenStream(). If the flag is not set this value is ignored.
If the stream is a full duplex stream the implementation requires that
the values of framesPerBuffer for input and output match (if both are specified).
*/
unsigned long framesPerBuffer;
/**
support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
paWinDirectSoundUseChannelMask this allows you to specify which speakers
to address in a multichannel stream. Constants for channelMask
are specified in pa_win_waveformat.h
*/
PaWinWaveFormatChannelMask channelMask;
}PaWinDirectSoundStreamInfo;
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_DS_H */

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#ifndef PA_WIN_WASAPI_H
#define PA_WIN_WASAPI_H
/*
* $Id: $
* PortAudio Portable Real-Time Audio Library
* DirectSound specific extensions
*
* Copyright (c) 1999-2007 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief WASAPI-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#include "pa_win_waveformat.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Setup flags */
typedef enum PaWasapiFlags
{
/* puts WASAPI into exclusive mode */
paWinWasapiExclusive = (1 << 0),
/* allows to skip internal PA processing completely */
paWinWasapiRedirectHostProcessor = (1 << 1),
/* assigns custom channel mask */
paWinWasapiUseChannelMask = (1 << 2),
/* selects non-Event driven method of data read/write
Note: WASAPI Event driven core is capable of 2ms latency!!!, but Polling
method can only provide 15-20ms latency. */
paWinWasapiPolling = (1 << 3),
/* forces custom thread priority setting. must be used if PaWasapiStreamInfo::threadPriority
is set to custom value. */
paWinWasapiThreadPriority = (1 << 4)
}
PaWasapiFlags;
#define paWinWasapiExclusive (paWinWasapiExclusive)
#define paWinWasapiRedirectHostProcessor (paWinWasapiRedirectHostProcessor)
#define paWinWasapiUseChannelMask (paWinWasapiUseChannelMask)
#define paWinWasapiPolling (paWinWasapiPolling)
#define paWinWasapiThreadPriority (paWinWasapiThreadPriority)
/* Host processor. Allows to skip internal PA processing completely.
You must set paWinWasapiRedirectHostProcessor flag to PaWasapiStreamInfo::flags member
in order to have host processor redirected to your callback.
Use with caution! inputFrames and outputFrames depend solely on final device setup.
To query maximal values of inputFrames/outputFrames use PaWasapi_GetFramesPerHostBuffer.
*/
typedef void (*PaWasapiHostProcessorCallback) (void *inputBuffer, long inputFrames,
void *outputBuffer, long outputFrames,
void *userData);
/* Device role */
typedef enum PaWasapiDeviceRole
{
eRoleRemoteNetworkDevice = 0,
eRoleSpeakers,
eRoleLineLevel,
eRoleHeadphones,
eRoleMicrophone,
eRoleHeadset,
eRoleHandset,
eRoleUnknownDigitalPassthrough,
eRoleSPDIF,
eRoleHDMI,
eRoleUnknownFormFactor
}
PaWasapiDeviceRole;
/* Jack connection type */
typedef enum PaWasapiJackConnectionType
{
eJackConnTypeUnknown,
eJackConnType3Point5mm,
eJackConnTypeQuarter,
eJackConnTypeAtapiInternal,
eJackConnTypeRCA,
eJackConnTypeOptical,
eJackConnTypeOtherDigital,
eJackConnTypeOtherAnalog,
eJackConnTypeMultichannelAnalogDIN,
eJackConnTypeXlrProfessional,
eJackConnTypeRJ11Modem,
eJackConnTypeCombination
}
PaWasapiJackConnectionType;
/* Jack geometric location */
typedef enum PaWasapiJackGeoLocation
{
eJackGeoLocUnk = 0,
eJackGeoLocRear = 0x1, /* matches EPcxGeoLocation::eGeoLocRear */
eJackGeoLocFront,
eJackGeoLocLeft,
eJackGeoLocRight,
eJackGeoLocTop,
eJackGeoLocBottom,
eJackGeoLocRearPanel,
eJackGeoLocRiser,
eJackGeoLocInsideMobileLid,
eJackGeoLocDrivebay,
eJackGeoLocHDMI,
eJackGeoLocOutsideMobileLid,
eJackGeoLocATAPI,
eJackGeoLocReserved5,
eJackGeoLocReserved6,
}
PaWasapiJackGeoLocation;
/* Jack general location */
typedef enum PaWasapiJackGenLocation
{
eJackGenLocPrimaryBox = 0,
eJackGenLocInternal,
eJackGenLocSeparate,
eJackGenLocOther
}
PaWasapiJackGenLocation;
/* Jack's type of port */
typedef enum PaWasapiJackPortConnection
{
eJackPortConnJack = 0,
eJackPortConnIntegratedDevice,
eJackPortConnBothIntegratedAndJack,
eJackPortConnUnknown
}
PaWasapiJackPortConnection;
/* Thread priority */
typedef enum PaWasapiThreadPriority
{
eThreadPriorityNone = 0,
eThreadPriorityAudio, //!< Default for Shared mode.
eThreadPriorityCapture,
eThreadPriorityDistribution,
eThreadPriorityGames,
eThreadPriorityPlayback,
eThreadPriorityProAudio, //!< Default for Exclusive mode.
eThreadPriorityWindowManager
}
PaWasapiThreadPriority;
/* Stream descriptor. */
typedef struct PaWasapiJackDescription
{
unsigned long channelMapping;
unsigned long color; /* derived from macro: #define RGB(r,g,b) ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16))) */
PaWasapiJackConnectionType connectionType;
PaWasapiJackGeoLocation geoLocation;
PaWasapiJackGenLocation genLocation;
PaWasapiJackPortConnection portConnection;
unsigned int isConnected;
}
PaWasapiJackDescription;
/* Stream descriptor. */
typedef struct PaWasapiStreamInfo
{
unsigned long size; /**< sizeof(PaWasapiStreamInfo) */
PaHostApiTypeId hostApiType; /**< paWASAPI */
unsigned long version; /**< 1 */
unsigned long flags; /**< collection of PaWasapiFlags */
/* Support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
paWinWasapiUseChannelMask this allows you to specify which speakers
to address in a multichannel stream. Constants for channelMask
are specified in pa_win_waveformat.h. Will be used only if
paWinWasapiUseChannelMask flag is specified.
*/
PaWinWaveFormatChannelMask channelMask;
/* Delivers raw data to callback obtained from GetBuffer() methods skipping
internal PortAudio processing inventory completely. userData parameter will
be the same that was passed to Pa_OpenStream method. Will be used only if
paWinWasapiRedirectHostProcessor flag is specified.
*/
PaWasapiHostProcessorCallback hostProcessorOutput;
PaWasapiHostProcessorCallback hostProcessorInput;
/* Specifies thread priority explicitly. Will be used only if paWinWasapiThreadPriority flag
is specified.
Please note, if Input/Output streams are opened simultaniously (Full-Duplex mode)
you shall specify same value for threadPriority or othervise one of the values will be used
to setup thread priority.
*/
PaWasapiThreadPriority threadPriority;
}
PaWasapiStreamInfo;
/** Returns default sound format for device. Format is represented by PaWinWaveFormat or
WAVEFORMATEXTENSIBLE structure.
@param pFormat Pointer to PaWinWaveFormat or WAVEFORMATEXTENSIBLE structure.
@param nFormatSize Size of PaWinWaveFormat or WAVEFORMATEXTENSIBLE structure in bytes.
@param nDevice Device index.
@return Non-negative value indicating the number of bytes copied into format decriptor
or, a PaErrorCode (which are always negative) if PortAudio is not initialized
or an error is encountered.
*/
int PaWasapi_GetDeviceDefaultFormat( void *pFormat, unsigned int nFormatSize, PaDeviceIndex nDevice );
/** Returns device role (PaWasapiDeviceRole enum).
@param nDevice device index.
@return Non-negative value indicating device role or, a PaErrorCode (which are always negative)
if PortAudio is not initialized or an error is encountered.
*/
int/*PaWasapiDeviceRole*/ PaWasapi_GetDeviceRole( PaDeviceIndex nDevice );
/** Boost thread priority of calling thread (MMCSS). Use it for Blocking Interface only for thread
which makes calls to Pa_WriteStream/Pa_ReadStream.
@param hTask Handle to pointer to priority task. Must be used with PaWasapi_RevertThreadPriority
method to revert thread priority to initial state.
@param nPriorityClass Id of thread priority of PaWasapiThreadPriority type. Specifying
eThreadPriorityNone does nothing.
@return Error code indicating success or failure.
@see PaWasapi_RevertThreadPriority
*/
PaError PaWasapi_ThreadPriorityBoost( void **hTask, PaWasapiThreadPriority nPriorityClass );
/** Boost thread priority of calling thread (MMCSS). Use it for Blocking Interface only for thread
which makes calls to Pa_WriteStream/Pa_ReadStream.
@param hTask Task handle obtained by PaWasapi_BoostThreadPriority method.
@return Error code indicating success or failure.
@see PaWasapi_BoostThreadPriority
*/
PaError PaWasapi_ThreadPriorityRevert( void *hTask );
/** Get number of frames per host buffer. This is maximal value of frames of WASAPI buffer which
can be locked for operations. Use this method as helper to findout maximal values of
inputFrames/outputFrames of PaWasapiHostProcessorCallback.
@param pStream Pointer to PaStream to query.
@param nInput Pointer to variable to receive number of input frames. Can be NULL.
@param nOutput Pointer to variable to receive number of output frames. Can be NULL.
@return Error code indicating success or failure.
@see PaWasapiHostProcessorCallback
*/
PaError PaWasapi_GetFramesPerHostBuffer( PaStream *pStream, unsigned int *nInput, unsigned int *nOutput );
/** Get number of jacks associated with a WASAPI device. Use this method to determine if
there are any jacks associated with the provided WASAPI device. Not all audio devices
will support this capability. This is valid for both input and output devices.
@param nDevice device index.
@param jcount Number of jacks is returned in this variable
@return Error code indicating success or failure
@see PaWasapi_GetJackDescription
*/
PaError PaWasapi_GetJackCount(PaDeviceIndex nDevice, int *jcount);
/** Get the jack description associated with a WASAPI device and jack number
Before this function is called, use PaWasapi_GetJackCount to determine the
number of jacks associated with device. If jcount is greater than zero, then
each jack from 0 to jcount can be queried with this function to get the jack
description.
@param nDevice device index.
@param jindex Which jack to return information
@param KSJACK_DESCRIPTION This structure filled in on success.
@return Error code indicating success or failure
@see PaWasapi_GetJackCount
*/
PaError PaWasapi_GetJackDescription(PaDeviceIndex nDevice, int jindex, PaWasapiJackDescription *pJackDescription);
/*
IMPORTANT:
WASAPI is implemented for Callback and Blocking interfaces. It supports Shared and Exclusive
share modes.
Exclusive Mode:
Exclusive mode allows to deliver audio data directly to hardware bypassing
software mixing.
Exclusive mode is specified by 'paWinWasapiExclusive' flag.
Callback Interface:
Provides best audio quality with low latency. Callback interface is implemented in
two versions:
1) Event-Driven:
This is the most powerful WASAPI implementation which provides glitch-free
audio at around 3ms latency in Exclusive mode. Lowest possible latency for this mode is
3 ms for HD Audio class audio chips. For the Shared mode latency can not be
lower than 20 ms.
2) Poll-Driven:
Polling is another 2-nd method to operate with WASAPI. It is less efficient than Event-Driven
and provides latency at around 10-13ms. Polling must be used to overcome a system bug
under Windows Vista x64 when application is WOW64(32-bit) and Event-Driven method simply
times out (event handle is never signalled on buffer completion). Please note, such WOW64 bug
does not exist in Vista x86 or Windows 7.
Polling can be setup by speciying 'paWinWasapiPolling' flag. Our WASAPI implementation detects
WOW64 bug and sets 'paWinWasapiPolling' automatically.
Thread priority:
Normally thread priority is set automatically and does not require modification. Although
if user wants some tweaking thread priority can be modified by setting 'paWinWasapiThreadPriority'
flag and specifying 'PaWasapiStreamInfo::threadPriority' with value from PaWasapiThreadPriority
enum.
Blocking Interface:
Blocking interface is implemented but due to above described Poll-Driven method can not
deliver lowest possible latency. Specifying too low latency in Shared mode will result in
distorted audio although Exclusive mode adds stability.
Pa_IsFormatSupported:
To check format with correct Share Mode (Exclusive/Shared) you must supply
PaWasapiStreamInfo with flags paWinWasapiExclusive set through member of
PaStreamParameters::hostApiSpecificStreamInfo structure.
Pa_OpenStream:
To set desired Share Mode (Exclusive/Shared) you must supply
PaWasapiStreamInfo with flags paWinWasapiExclusive set through member of
PaStreamParameters::hostApiSpecificStreamInfo structure.
*/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_WASAPI_H */

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#ifndef PA_WIN_WAVEFORMAT_H
#define PA_WIN_WAVEFORMAT_H
/*
* PortAudio Portable Real-Time Audio Library
* Windows WAVEFORMAT* data structure utilities
* portaudio.h should be included before this file.
*
* Copyright (c) 2007 Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief Windows specific PortAudio API extension and utilities header file.
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
The following #defines for speaker channel masks are the same
as those in ksmedia.h, except with PAWIN_ prepended, KSAUDIO_ removed
in some cases, and casts to PaWinWaveFormatChannelMask added.
*/
typedef unsigned long PaWinWaveFormatChannelMask;
/* Speaker Positions: */
#define PAWIN_SPEAKER_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1)
#define PAWIN_SPEAKER_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x2)
#define PAWIN_SPEAKER_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x4)
#define PAWIN_SPEAKER_LOW_FREQUENCY ((PaWinWaveFormatChannelMask)0x8)
#define PAWIN_SPEAKER_BACK_LEFT ((PaWinWaveFormatChannelMask)0x10)
#define PAWIN_SPEAKER_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20)
#define PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER ((PaWinWaveFormatChannelMask)0x40)
#define PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER ((PaWinWaveFormatChannelMask)0x80)
#define PAWIN_SPEAKER_BACK_CENTER ((PaWinWaveFormatChannelMask)0x100)
#define PAWIN_SPEAKER_SIDE_LEFT ((PaWinWaveFormatChannelMask)0x200)
#define PAWIN_SPEAKER_SIDE_RIGHT ((PaWinWaveFormatChannelMask)0x400)
#define PAWIN_SPEAKER_TOP_CENTER ((PaWinWaveFormatChannelMask)0x800)
#define PAWIN_SPEAKER_TOP_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1000)
#define PAWIN_SPEAKER_TOP_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x2000)
#define PAWIN_SPEAKER_TOP_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x4000)
#define PAWIN_SPEAKER_TOP_BACK_LEFT ((PaWinWaveFormatChannelMask)0x8000)
#define PAWIN_SPEAKER_TOP_BACK_CENTER ((PaWinWaveFormatChannelMask)0x10000)
#define PAWIN_SPEAKER_TOP_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20000)
/* Bit mask locations reserved for future use */
#define PAWIN_SPEAKER_RESERVED ((PaWinWaveFormatChannelMask)0x7FFC0000)
/* Used to specify that any possible permutation of speaker configurations */
#define PAWIN_SPEAKER_ALL ((PaWinWaveFormatChannelMask)0x80000000)
/* DirectSound Speaker Config */
#define PAWIN_SPEAKER_DIRECTOUT 0
#define PAWIN_SPEAKER_MONO (PAWIN_SPEAKER_FRONT_CENTER)
#define PAWIN_SPEAKER_STEREO (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT)
#define PAWIN_SPEAKER_QUAD (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
#define PAWIN_SPEAKER_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_BACK_CENTER)
#define PAWIN_SPEAKER_5POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
#define PAWIN_SPEAKER_7POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER | PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER)
#define PAWIN_SPEAKER_5POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
#define PAWIN_SPEAKER_7POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
/*
According to the Microsoft documentation:
The following are obsolete 5.1 and 7.1 settings (they lack side speakers). Note this means
that the default 5.1 and 7.1 settings (KSAUDIO_SPEAKER_5POINT1 and KSAUDIO_SPEAKER_7POINT1 are
similarly obsolete but are unchanged for compatibility reasons).
*/
#define PAWIN_SPEAKER_5POINT1_BACK PAWIN_SPEAKER_5POINT1
#define PAWIN_SPEAKER_7POINT1_WIDE PAWIN_SPEAKER_7POINT1
/* DVD Speaker Positions */
#define PAWIN_SPEAKER_GROUND_FRONT_LEFT PAWIN_SPEAKER_FRONT_LEFT
#define PAWIN_SPEAKER_GROUND_FRONT_CENTER PAWIN_SPEAKER_FRONT_CENTER
#define PAWIN_SPEAKER_GROUND_FRONT_RIGHT PAWIN_SPEAKER_FRONT_RIGHT
#define PAWIN_SPEAKER_GROUND_REAR_LEFT PAWIN_SPEAKER_BACK_LEFT
#define PAWIN_SPEAKER_GROUND_REAR_RIGHT PAWIN_SPEAKER_BACK_RIGHT
#define PAWIN_SPEAKER_TOP_MIDDLE PAWIN_SPEAKER_TOP_CENTER
#define PAWIN_SPEAKER_SUPER_WOOFER PAWIN_SPEAKER_LOW_FREQUENCY
/*
PaWinWaveFormat is defined here to provide compatibility with
compilation environments which don't have headers defining
WAVEFORMATEXTENSIBLE (e.g. older versions of MSVC, Borland C++ etc.
The fields for WAVEFORMATEX and WAVEFORMATEXTENSIBLE are declared as an
unsigned char array here to avoid clients who include this file having
a dependency on windows.h and mmsystem.h, and also to to avoid having
to write separate packing pragmas for each compiler.
*/
#define PAWIN_SIZEOF_WAVEFORMATEX 18
#define PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE (PAWIN_SIZEOF_WAVEFORMATEX + 22)
typedef struct{
unsigned char fields[ PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE ];
unsigned long extraLongForAlignment; /* ensure that compiler aligns struct to DWORD */
} PaWinWaveFormat;
/*
WAVEFORMATEXTENSIBLE fields:
union {
WORD wValidBitsPerSample;
WORD wSamplesPerBlock;
WORD wReserved;
} Samples;
DWORD dwChannelMask;
GUID SubFormat;
*/
#define PAWIN_INDEXOF_WVALIDBITSPERSAMPLE (PAWIN_SIZEOF_WAVEFORMATEX+0)
#define PAWIN_INDEXOF_DWCHANNELMASK (PAWIN_SIZEOF_WAVEFORMATEX+2)
#define PAWIN_INDEXOF_SUBFORMAT (PAWIN_SIZEOF_WAVEFORMATEX+6)
/*
Valid values to pass for the waveFormatTag PaWin_InitializeWaveFormatEx and
PaWin_InitializeWaveFormatExtensible functions below. These must match
the standard Windows WAVE_FORMAT_* values.
*/
#define PAWIN_WAVE_FORMAT_PCM (1)
#define PAWIN_WAVE_FORMAT_IEEE_FLOAT (3)
#define PAWIN_WAVE_FORMAT_DOLBY_AC3_SPDIF (0x0092)
#define PAWIN_WAVE_FORMAT_WMA_SPDIF (0x0164)
/*
returns PAWIN_WAVE_FORMAT_PCM or PAWIN_WAVE_FORMAT_IEEE_FLOAT
depending on the sampleFormat parameter.
*/
int PaWin_SampleFormatToLinearWaveFormatTag( PaSampleFormat sampleFormat );
/*
Use the following two functions to initialize the waveformat structure.
*/
void PaWin_InitializeWaveFormatEx( PaWinWaveFormat *waveFormat,
int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate );
void PaWin_InitializeWaveFormatExtensible( PaWinWaveFormat *waveFormat,
int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate,
PaWinWaveFormatChannelMask channelMask );
/* Map a channel count to a speaker channel mask */
PaWinWaveFormatChannelMask PaWin_DefaultChannelMask( int numChannels );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_WAVEFORMAT_H */

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#ifndef PA_WIN_WDMKS_H
#define PA_WIN_WDMKS_H
/*
* $Id: pa_win_wdmks.h 1812 2012-02-14 09:32:57Z robiwan $
* PortAudio Portable Real-Time Audio Library
* WDM/KS specific extensions
*
* Copyright (c) 1999-2007 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief WDM Kernel Streaming-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#include <windows.h>
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
typedef struct PaWinWDMKSInfo{
unsigned long size; /**< sizeof(PaWinWDMKSInfo) */
PaHostApiTypeId hostApiType; /**< paWDMKS */
unsigned long version; /**< 1 */
/* The number of packets to use for WaveCyclic devices, range is [2, 8]. Set to zero for default value of 2. */
unsigned noOfPackets;
} PaWinWDMKSInfo;
typedef enum PaWDMKSType
{
Type_kNotUsed,
Type_kWaveCyclic,
Type_kWaveRT,
Type_kCnt,
} PaWDMKSType;
typedef enum PaWDMKSSubType
{
SubType_kUnknown,
SubType_kNotification,
SubType_kPolled,
SubType_kCnt,
} PaWDMKSSubType;
typedef struct PaWinWDMKSDeviceInfo {
wchar_t filterPath[MAX_PATH]; /**< KS filter path in Unicode! */
wchar_t topologyPath[MAX_PATH]; /**< Topology filter path in Unicode! */
PaWDMKSType streamingType;
GUID deviceProductGuid; /**< The product GUID of the device (if supported) */
} PaWinWDMKSDeviceInfo;
typedef struct PaWDMKSDirectionSpecificStreamInfo
{
PaDeviceIndex device;
unsigned channels; /**< No of channels the device is opened with */
unsigned framesPerHostBuffer; /**< No of frames of the device buffer */
int endpointPinId; /**< Endpoint pin ID (on topology filter if topologyName is not empty) */
int muxNodeId; /**< Only valid for input */
PaWDMKSSubType streamingSubType; /**< Not known until device is opened for streaming */
} PaWDMKSDirectionSpecificStreamInfo;
typedef struct PaWDMKSSpecificStreamInfo {
PaWDMKSDirectionSpecificStreamInfo input;
PaWDMKSDirectionSpecificStreamInfo output;
} PaWDMKSSpecificStreamInfo;
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_DS_H */

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#ifndef PA_WIN_WMME_H
#define PA_WIN_WMME_H
/*
* $Id: pa_win_wmme.h 1592 2011-02-04 10:41:58Z rossb $
* PortAudio Portable Real-Time Audio Library
* MME specific extensions
*
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief WMME-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#include "pa_win_waveformat.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* The following are flags which can be set in
PaWinMmeStreamInfo's flags field.
*/
#define paWinMmeUseLowLevelLatencyParameters (0x01)
#define paWinMmeUseMultipleDevices (0x02) /* use mme specific multiple device feature */
#define paWinMmeUseChannelMask (0x04)
/* By default, the mme implementation drops the processing thread's priority
to THREAD_PRIORITY_NORMAL and sleeps the thread if the CPU load exceeds 100%
This flag disables any priority throttling. The processing thread will always
run at THREAD_PRIORITY_TIME_CRITICAL.
*/
#define paWinMmeDontThrottleOverloadedProcessingThread (0x08)
/* Flags for non-PCM spdif passthrough.
*/
#define paWinMmeWaveFormatDolbyAc3Spdif (0x10)
#define paWinMmeWaveFormatWmaSpdif (0x20)
typedef struct PaWinMmeDeviceAndChannelCount{
PaDeviceIndex device;
int channelCount;
}PaWinMmeDeviceAndChannelCount;
typedef struct PaWinMmeStreamInfo{
unsigned long size; /**< sizeof(PaWinMmeStreamInfo) */
PaHostApiTypeId hostApiType; /**< paMME */
unsigned long version; /**< 1 */
unsigned long flags;
/* low-level latency setting support
These settings control the number and size of host buffers in order
to set latency. They will be used instead of the generic parameters
to Pa_OpenStream() if flags contains the PaWinMmeUseLowLevelLatencyParameters
flag.
If PaWinMmeStreamInfo structures with PaWinMmeUseLowLevelLatencyParameters
are supplied for both input and output in a full duplex stream, then the
input and output framesPerBuffer must be the same, or the larger of the
two must be a multiple of the smaller, otherwise a
paIncompatibleHostApiSpecificStreamInfo error will be returned from
Pa_OpenStream().
*/
unsigned long framesPerBuffer;
unsigned long bufferCount; /* formerly numBuffers */
/* multiple devices per direction support
If flags contains the PaWinMmeUseMultipleDevices flag,
this functionality will be used, otherwise the device parameter to
Pa_OpenStream() will be used instead.
If devices are specified here, the corresponding device parameter
to Pa_OpenStream() should be set to paUseHostApiSpecificDeviceSpecification,
otherwise an paInvalidDevice error will result.
The total number of channels accross all specified devices
must agree with the corresponding channelCount parameter to
Pa_OpenStream() otherwise a paInvalidChannelCount error will result.
*/
PaWinMmeDeviceAndChannelCount *devices;
unsigned long deviceCount;
/*
support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
paWinMmeUseChannelMask this allows you to specify which speakers
to address in a multichannel stream. Constants for channelMask
are specified in pa_win_waveformat.h
*/
PaWinWaveFormatChannelMask channelMask;
}PaWinMmeStreamInfo;
/** Retrieve the number of wave in handles used by a PortAudio WinMME stream.
Returns zero if the stream is output only.
@return A non-negative value indicating the number of wave in handles
or, a PaErrorCode (which are always negative) if PortAudio is not initialized
or an error is encountered.
@see PaWinMME_GetStreamInputHandle
*/
int PaWinMME_GetStreamInputHandleCount( PaStream* stream );
/** Retrieve a wave in handle used by a PortAudio WinMME stream.
@param stream The stream to query.
@param handleIndex The zero based index of the wave in handle to retrieve. This
should be in the range [0, PaWinMME_GetStreamInputHandleCount(stream)-1].
@return A valid wave in handle, or NULL if an error occurred.
@see PaWinMME_GetStreamInputHandle
*/
HWAVEIN PaWinMME_GetStreamInputHandle( PaStream* stream, int handleIndex );
/** Retrieve the number of wave out handles used by a PortAudio WinMME stream.
Returns zero if the stream is input only.
@return A non-negative value indicating the number of wave out handles
or, a PaErrorCode (which are always negative) if PortAudio is not initialized
or an error is encountered.
@see PaWinMME_GetStreamOutputHandle
*/
int PaWinMME_GetStreamOutputHandleCount( PaStream* stream );
/** Retrieve a wave out handle used by a PortAudio WinMME stream.
@param stream The stream to query.
@param handleIndex The zero based index of the wave out handle to retrieve.
This should be in the range [0, PaWinMME_GetStreamOutputHandleCount(stream)-1].
@return A valid wave out handle, or NULL if an error occurred.
@see PaWinMME_GetStreamOutputHandleCount
*/
HWAVEOUT PaWinMME_GetStreamOutputHandle( PaStream* stream, int handleIndex );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_WMME_H */

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#pragma once
#define BUF_SIZE (16 * 32 * 512)
#define BUF_SIZE (16 * 32 * 256)
#define SRATE 2500000
#define FFT_SIZE 8192
#define DEFAULT_FREQ 105700000
#define DEFAULT_FREQ 107500000

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#include "Demodulator.h"
static int patestCallback(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags, void *userData) {
Demodulator *src = (Demodulator *) userData;
float *out = (float*) outputBuffer;
if (!src->audio_queue.size()) {
for (int i = 0; i < framesPerBuffer * 2; i++) {
out[i] = 0;
}
return paContinue;
}
std::vector<float> *nextBuffer = src->audio_queue.front();
for (int i = 0; i < framesPerBuffer * 2; i++) {
out[i] = (*nextBuffer)[src->audio_queue_ptr];
src->audio_queue_ptr++;
if (src->audio_queue_ptr == nextBuffer->size()) {
src->audio_queue.pop();
delete nextBuffer;
src->audio_queue_ptr = 0;
if (!src->audio_queue.size()) {
break;
}
nextBuffer = src->audio_queue.front();
}
}
return paContinue;
}
Demodulator::Demodulator() {
bandwidth = 800000;
resample_ratio = (float) (bandwidth) / (float) SRATE;
audio_frequency = 44100;
audio_resample_ratio = (float) (audio_frequency) / (float) bandwidth;
PaError err;
err = Pa_Initialize();
if (err != paNoError) {
std::cout << "Error starting :(\n";
}
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
std::cout << "Error: No default output device.\n";
}
outputParameters.channelCount = 2; /* Stereo output, most likely supported. */
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output. */
outputParameters.suggestedLatency = Pa_GetDeviceInfo(outputParameters.device)->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
stream = NULL;
err = Pa_OpenStream(&stream, NULL, &outputParameters, 44100, 256, paClipOff, &patestCallback, this);
err = Pa_StartStream(stream);
if (err != paNoError) {
std::cout << "Error starting stream: " << Pa_GetErrorText(err) << std::endl;
std::cout << "\tPortAudio error: " << Pa_GetErrorText(err) << std::endl;
}
float fc = 0.5f * (bandwidth / SRATE); // filter cutoff frequency
float ft = 0.05f;// filter transition
float As = 60.0f;// stop-band attenuation [dB]
float mu = 0.0f;// fractional timing offset
// estimate required filter length and generate filter
unsigned int h_len = estimate_req_filter_len(ft, As);
float h[h_len];
liquid_firdes_kaiser(h_len, fc, As, mu, h);
fir_filter = firfilt_crcf_create(h, h_len);
// create multi-stage arbitrary resampler object
resampler = msresamp_crcf_create(resample_ratio, As);
msresamp_crcf_print(resampler);
audio_resampler = msresamp_crcf_create(audio_resample_ratio, As);
msresamp_crcf_print(audio_resampler);
float kf = 0.1f;// modulation factor
fdem = freqdem_create(kf);
freqdem_print(fdem);
}
Demodulator::~Demodulator() {
PaError err;
err = Pa_StopStream(stream);
err = Pa_CloseStream(stream);
Pa_Terminate();
}
void Demodulator::writeBuffer(std::vector<signed char> *data) {
liquid_float_complex filtered_input[BUF_SIZE / 2];
for (int i = 0; i < BUF_SIZE / 2; i++) {
liquid_float_complex x;
liquid_float_complex y;
x.real = (float) (*data)[i * 2] / 127.0f;
x.imag = (float) (*data)[i * 2 + 1] / 127.0f;
firfilt_crcf_push(fir_filter, x); // push input sample
firfilt_crcf_execute(fir_filter, &y); // compute output
filtered_input[i] = y;
}
int out_size = ceil((float) (BUF_SIZE / 2) * resample_ratio);
liquid_float_complex resampled_output[out_size];
unsigned int num_written; // number of values written to buffer
msresamp_crcf_execute(resampler, filtered_input, (BUF_SIZE / 2), resampled_output, &num_written);
float waveform_ceil = 0, waveform_floor = 0;
float pcm = 0;
for (int i = 0; i < num_written; i++) {
freqdem_demodulate(fdem, resampled_output[i], &pcm);
resampled_output[i].real = (float) pcm;
resampled_output[i].imag = 0;
if (waveform_ceil < resampled_output[i].real) {
waveform_ceil = resampled_output[i].real;
}
if (waveform_floor > resampled_output[i].real) {
waveform_floor = resampled_output[i].real;
}
}
int audio_out_size = ceil((float) (num_written) * audio_resample_ratio);
liquid_float_complex resampled_audio_output[audio_out_size];
unsigned int num_audio_written; // number of values written to buffer
msresamp_crcf_execute(audio_resampler, resampled_output, num_written, resampled_audio_output, &num_audio_written);
std::vector<float> *newBuffer = new std::vector<float>;
newBuffer->resize(num_audio_written * 2);
for (int i = 0; i < num_audio_written; i++) {
(*newBuffer)[i * 2] = resampled_audio_output[i].real;
(*newBuffer)[i * 2 + 1] = resampled_audio_output[i].real;
}
audio_queue.push(newBuffer);
if (waveform_points.size() != num_audio_written * 2) {
waveform_points.resize(num_audio_written * 2);
}
for (int i = 0, iMax = waveform_points.size() / 2; i < iMax; i++) {
waveform_points[i * 2 + 1] = resampled_audio_output[i].real * 0.5f;
waveform_points[i * 2] = ((double) i / (double) iMax);
}
}

46
src/Demodulator.h Normal file
View File

@ -0,0 +1,46 @@
#pragma once
#include <vector>
#include <queue>
#include <cstring>
#include <iostream>
#include <math.h>
#include "CubicSDRDefs.h"
#include "liquid/liquid.h"
#include "portaudio.h"
#ifdef WIN32
#include "pa_stream.h"
#include "pa_debugprint.h"
#endif
static int patestCallback(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags, void *userData);
class Demodulator {
public:
std::queue<std::vector<float> *> audio_queue;
unsigned int audio_queue_ptr;
std::vector<float> waveform_points;
Demodulator();
~Demodulator();
void writeBuffer(std::vector<signed char> *data);
private:
firfilt_crcf fir_filter;
msresamp_crcf resampler;
msresamp_crcf audio_resampler;
float resample_ratio;
unsigned int bandwidth;
unsigned int audio_frequency;
float audio_resample_ratio;
PaStreamParameters outputParameters;
PaStream *stream;
freqdem fdem;
};

93
src/PrimaryGLContext.cpp
View File

@ -62,7 +62,7 @@ PrimaryGLContext::PrimaryGLContext(wxGLCanvas *canvas) :
CheckGLError();
}
void PrimaryGLContext::Plot(std::vector<float> &points) {
void PrimaryGLContext::Plot(std::vector<float> &points, std::vector<float> &points2) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
@ -70,22 +70,27 @@ void PrimaryGLContext::Plot(std::vector<float> &points) {
// glEnable(GL_LINE_SMOOTH);
glPushMatrix();
glTranslatef(-1.0f, -0.9f, 0.0f);
glScalef(2.0f, 1.8f, 1.0f);
if (points.size()) {
glPushMatrix();
glTranslatef(-1.0f, -0.9f, 0.0f);
glScalef(2.0f, 1.0f, 1.0f);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &points[0]);
glDrawArrays(GL_LINE_STRIP, 0, points.size() / 2);
glDisableClientState(GL_VERTEX_ARRAY);
} else {
glBegin(GL_LINE_STRIP);
glColor3f(1.0f, 1.0f, 1.0f);
glVertex3f(-1.0f, 0.0f, 0.0f);
glVertex3f(1.0f, 0.0f, 0.0f);
glEnd();
glPopMatrix();
}
if (points2.size()) {
glPushMatrix();
glTranslatef(-1.0f, 0.5f, 0.0f);
glScalef(2.0f, 1.0f, 1.0f);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &points2[0]);
glDrawArrays(GL_LINE_STRIP, 0, points2.size() / 2);
glDisableClientState(GL_VERTEX_ARRAY);
glPopMatrix();
}
glPopMatrix();
glFlush();
@ -97,20 +102,29 @@ EVT_KEY_DOWN(TestGLCanvas::OnKeyDown)
EVT_IDLE(TestGLCanvas::OnIdle)
wxEND_EVENT_TABLE()
TestGLCanvas::TestGLCanvas(wxWindow *parent, int *attribList) :
wxGLCanvas(parent, wxID_ANY, attribList, wxDefaultPosition, wxDefaultSize,
wxFULL_REPAINT_ON_RESIZE), parent(parent) {
int in_block_size = BUF_SIZE / 2;
int out_block_size = FFT_SIZE;
in = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * in_block_size);
out[0] = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * out_block_size);
out[1] = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * out_block_size);
plan[0] = fftw_plan_dft_1d(out_block_size, in, out[0], FFTW_BACKWARD, FFTW_MEASURE);
plan[1] = fftw_plan_dft_1d(out_block_size, in, out[1], FFTW_FORWARD, FFTW_MEASURE);
plan[0] = fftw_plan_dft_1d(out_block_size, in, out[0], FFTW_FORWARD, FFTW_MEASURE);
plan[1] = fftw_plan_dft_1d(out_block_size, out[0], out[1], FFTW_BACKWARD, FFTW_MEASURE);
fft_ceil_ma = fft_ceil_maa = 1.0;
}
TestGLCanvas::~TestGLCanvas() {
}
void TestGLCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
@ -120,7 +134,9 @@ void TestGLCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
PrimaryGLContext& canvas = wxGetApp().GetContext(this);
glViewport(0, 0, ClientSize.x, ClientSize.y);
canvas.Plot(points);
std::vector<float> null_pts;
canvas.Plot(spectrum_points, test_demod.waveform_points);
SwapBuffers();
}
@ -152,24 +168,33 @@ void TestGLCanvas::OnKeyDown(wxKeyEvent& event) {
}
}
void multiply2(float ar, float aj, float br, float bj, float *cr, float *cj) {
*cr = ar * br - aj * bj;
*cj = aj * br + ar * bj;
}
float polar_discriminant2(float ar, float aj, float br, float bj) {
float cr, cj;
double angle;
multiply2(ar, aj, br, -bj, &cr, &cj);
angle = atan2(cj, cr);
return (angle / M_PI);
}
void TestGLCanvas::setData(std::vector<signed char> *data) {
if (data && data->size()) {
if (points.size() < FFT_SIZE * 2) {
points.resize(FFT_SIZE * 2);
if (spectrum_points.size() < FFT_SIZE * 2) {
spectrum_points.resize(FFT_SIZE * 2);
}
for (int i = 0; i < BUF_SIZE / 2; i++) {
in[i][0] = (double) (*data)[i * 2] / 127.0f;
in[i][1] = (double) (*data)[i * 2 + 1] / 127.0f;
in[i][0] = (float) (*data)[i * 2] / 127.0f;
in[i][1] = (float) (*data)[i * 2 + 1] / 127.0f;
}
fftw_execute(plan[0]);
fftw_execute(plan[1]);
double fft_ceil = 0;
// fft_floor,
if (fft_result.size() < FFT_SIZE) {
fft_result.resize(FFT_SIZE);
@ -179,21 +204,16 @@ void TestGLCanvas::setData(std::vector<signed char> *data) {
for (int j = 0; j < 2; j++) {
for (int i = 0, iMax = FFT_SIZE / 2; i < iMax; i++) {
double a = out[j][j ? i : ((iMax - 1) - i)][0];
double b = out[j][j ? i : ((iMax - 1) - i)][1];
double a = out[0][i][0];
double b = out[0][i][1];
double c = sqrt(a * a + b * b);
double x = out[j ? 0 : 1][j ? ((FFT_SIZE - 1) - i) : ((FFT_SIZE / 2) + i)][0];
double y = out[j ? 0 : 1][j ? ((FFT_SIZE - 1) - i) : ((FFT_SIZE / 2) + i)][1];
double x = out[0][FFT_SIZE / 2 + i][0];
double y = out[0][FFT_SIZE / 2 + i][1];
double z = sqrt(x * x + y * y);
double r = (c < z) ? c : z;
if (!j) {
fft_result[i] = r;
} else {
fft_result[(FFT_SIZE / 2) + i] = r;
}
fft_result[i] = (z);
fft_result[FFT_SIZE / 2 + i] = (c);
}
}
@ -211,10 +231,15 @@ void TestGLCanvas::setData(std::vector<signed char> *data) {
fft_ceil_ma = fft_ceil_ma + (fft_ceil - fft_ceil_ma) * 0.05;
fft_ceil_maa = fft_ceil_maa + (fft_ceil - fft_ceil_maa) * 0.05;
// fftw_execute(plan[1]);
for (int i = 0, iMax = FFT_SIZE; i < iMax; i++) {
points[i * 2 + 1] = fft_result_maa[i] / fft_ceil_maa;
points[i * 2] = ((double) i / (double) iMax);
spectrum_points[i * 2 + 1] = log10(fft_result_maa[i]) / log10(fft_ceil_maa);
// spectrum_points[i * 2 + 1] = (fft_result_maa[i]) / (fft_ceil_maa);
spectrum_points[i * 2] = ((double) i / (double) iMax);
}
test_demod.writeBuffer(data);
}
}

11
src/PrimaryGLContext.h
View File

@ -4,23 +4,25 @@
#include "wx/timer.h"
#include <vector>
#include <queue>
#include "CubicSDRDefs.h"
#include "fftw3.h"
#include "Demodulator.h"
class PrimaryGLContext: public wxGLContext {
public:
PrimaryGLContext(wxGLCanvas *canvas);
void Plot(std::vector<float> &points);
void Plot(std::vector<float> &points, std::vector<float> &points2);
private:
// textures for the cube faces
GLuint m_textures[6];
};
class TestGLCanvas: public wxGLCanvas {
public:
TestGLCanvas(wxWindow *parent, int *attribList = NULL);
~TestGLCanvas();
void setData(std::vector<signed char> *data);
@ -31,7 +33,7 @@ private:
void OnIdle(wxIdleEvent &event);
wxWindow *parent;
std::vector<float> points;
std::vector<float> spectrum_points;
fftw_complex *in, *out[2];
fftw_plan plan[2];
@ -42,5 +44,6 @@ private:
std::vector<float> fft_result_ma;
std::vector<float> fft_result_maa;
Demodulator test_demod;
wxDECLARE_EVENT_TABLE();
};

4
src/SDRThreadTask.h
View File

@ -10,10 +10,10 @@ public:
};
SDRThreadTask() :
m_cmd(SDR_THREAD_NULL) {
m_cmd(SDR_THREAD_NULL), arg_int(0) {
}
SDRThreadTask(SDR_COMMAND cmd) :
m_cmd(cmd) {
arg_int(0), m_cmd(cmd) {
}
void setUInt(unsigned int i);