mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-08 01:56:10 -05:00
8d353a5b3b
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@189 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2959 lines
100 KiB
C++
2959 lines
100 KiB
C++
/*
|
|
* $Id$
|
|
* Portable Audio I/O Library for ASIO Drivers
|
|
*
|
|
* Author: Stephane Letz
|
|
* Based on the Open Source API proposed by Ross Bencina
|
|
* Copyright (c) 2000-2002 Stephane Letz, 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.
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/* Modification History
|
|
|
|
08-03-01 First version : Stephane Letz
|
|
08-06-01 Tweaks for PC, use C++, buffer allocation, Float32 to Int32 conversion : Phil Burk
|
|
08-20-01 More conversion, PA_StreamTime, Pa_GetHostError : Stephane Letz
|
|
08-21-01 PaUInt8 bug correction, implementation of ASIOSTFloat32LSB and ASIOSTFloat32MSB native formats : Stephane Letz
|
|
08-24-01 MAX_INT32_FP hack, another Uint8 fix : Stephane and Phil
|
|
08-27-01 Implementation of hostBufferSize < userBufferSize case, better management of the ouput buffer when
|
|
the stream is stopped : Stephane Letz
|
|
08-28-01 Check the stream pointer for null in bufferSwitchTimeInfo, correct bug in bufferSwitchTimeInfo when
|
|
the stream is stopped : Stephane Letz
|
|
10-12-01 Correct the PaHost_CalcNumHostBuffers function: computes FramesPerHostBuffer to be the lowest that
|
|
respect requested FramesPerUserBuffer and userBuffersPerHostBuffer : Stephane Letz
|
|
10-26-01 Management of hostBufferSize and userBufferSize of any size : Stephane Letz
|
|
10-27-01 Improve calculus of hostBufferSize to be multiple or divisor of userBufferSize if possible : Stephane and Phil
|
|
10-29-01 Change MAX_INT32_FP to (2147483520.0f) to prevent roundup to 0x80000000 : Phil Burk
|
|
10-31-01 Clear the ouput buffer and user buffers in PaHost_StartOutput, correct bug in GetFirstMultiple : Stephane Letz
|
|
11-06-01 Rename functions : Stephane Letz
|
|
11-08-01 New Pa_ASIO_Adaptor_Init function to init Callback adpatation variables, cleanup of Pa_ASIO_Callback_Input: Stephane Letz
|
|
11-29-01 Break apart device loading to debug random failure in Pa_ASIO_QueryDeviceInfo ; Phil Burk
|
|
01-03-02 Desallocate all resources in PaHost_Term for cases where Pa_CloseStream is not called properly : Stephane Letz
|
|
02-01-02 Cleanup, test of multiple-stream opening : Stephane Letz
|
|
19-02-02 New Pa_ASIO_loadDriver that calls CoInitialize on each thread on Windows : Stephane Letz
|
|
09-04-02 Correct error code management in PaHost_Term, removes various compiler warning : Stephane Letz
|
|
12-04-02 Add Mac includes for <Devices.h> and <Timer.h> : Phil Burk
|
|
13-04-02 Removes another compiler warning : Stephane Letz
|
|
30-04-02 Pa_ASIO_QueryDeviceInfo bug correction, memory allocation checking, better error handling : D Viens, P Burk, S Letz
|
|
12-06-02 Rehashed into new multi-api infrastructure, added support for all ASIO sample formats : Ross Bencina
|
|
18-06-02 Added pa_asio.h, PaAsio_GetAvailableLatencyValues() : Ross B.
|
|
21-06-02 Added SelectHostBufferSize() which selects host buffer size based on user latency parameters : Ross Bencina
|
|
** NOTE maintanance history is now stored in CVS **
|
|
*/
|
|
|
|
/** @file
|
|
|
|
Note that specific support for paInputUnderflow, paOutputOverflow and
|
|
paNeverDropInput is not necessary or possible with this driver due to the
|
|
synchronous full duplex double-buffered architecture of ASIO.
|
|
|
|
@todo check that CoInitialize()/CoUninitialize() are always correctly
|
|
paired, even in error cases.
|
|
|
|
@todo implement host api specific extension to set i/o buffer sizes in frames
|
|
|
|
@todo implement ReadStream, WriteStream, GetStreamReadAvailable, GetStreamWriteAvailable
|
|
|
|
@todo implement IsFormatSupported
|
|
|
|
@todo work out how to implement stream stoppage from callback and
|
|
implement IsStreamActive properly. Stream stoppage could be implemented
|
|
using a high-priority thread blocked on an Event which is signalled
|
|
by the callback. Or, we could just call ASIO stop from the callback
|
|
and see what happens.
|
|
|
|
@todo rigorously check asio return codes and convert to pa error codes
|
|
|
|
@todo Different channels of a multichannel stream can have different sample
|
|
formats, but we assume that all are the same as the first channel for now.
|
|
Fixing this will require the block processor to maintain per-channel
|
|
conversion functions - could get nasty.
|
|
|
|
@todo investigate whether the asio processNow flag needs to be honoured
|
|
|
|
@todo handle asioMessages() callbacks in a useful way, or at least document
|
|
what cases we don't handle.
|
|
|
|
@todo miscellaneous other FIXMEs
|
|
|
|
@todo provide an asio-specific method for setting the systems specific
|
|
value (aka main window handle) - check that this matches the value
|
|
passed to PaAsio_ShowControlPanel, or remove it entirely from
|
|
PaAsio_ShowControlPanel. - this would allow PaAsio_ShowControlPanel
|
|
to be called for the currently open stream (at present all streams
|
|
must be closed).
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
//#include <values.h>
|
|
|
|
#include <windows.h>
|
|
#include <mmsystem.h>
|
|
|
|
#include "portaudio.h"
|
|
#include "pa_asio.h"
|
|
#include "pa_util.h"
|
|
#include "pa_allocation.h"
|
|
#include "pa_hostapi.h"
|
|
#include "pa_stream.h"
|
|
#include "pa_cpuload.h"
|
|
#include "pa_process.h"
|
|
|
|
#include "asiosys.h"
|
|
#include "asio.h"
|
|
#include "asiodrivers.h"
|
|
#include "iasiothiscallresolver.h"
|
|
|
|
/*
|
|
#if MAC
|
|
#include <Devices.h>
|
|
#include <Timer.h>
|
|
#include <Math64.h>
|
|
#else
|
|
*/
|
|
/*
|
|
#include <math.h>
|
|
#include <windows.h>
|
|
#include <mmsystem.h>
|
|
*/
|
|
/*
|
|
#endif
|
|
*/
|
|
|
|
/* external references */
|
|
extern AsioDrivers* asioDrivers ;
|
|
bool loadAsioDriver(char *name);
|
|
|
|
|
|
/* We are trying to be compatible with CARBON but this has not been thoroughly tested. */
|
|
/* not tested at all since new code was introduced. */
|
|
#define CARBON_COMPATIBLE (0)
|
|
|
|
|
|
|
|
|
|
/* prototypes for functions declared in this file */
|
|
|
|
extern "C" PaError PaAsio_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex );
|
|
static void Terminate( struct PaUtilHostApiRepresentation *hostApi );
|
|
static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
|
|
PaStream** s,
|
|
const PaStreamParameters *inputParameters,
|
|
const PaStreamParameters *outputParameters,
|
|
double sampleRate,
|
|
unsigned long framesPerBuffer,
|
|
PaStreamFlags streamFlags,
|
|
PaStreamCallback *streamCallback,
|
|
void *userData );
|
|
static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
|
|
const PaStreamParameters *inputParameters,
|
|
const PaStreamParameters *outputParameters,
|
|
double sampleRate );
|
|
static PaError CloseStream( PaStream* stream );
|
|
static PaError StartStream( PaStream *stream );
|
|
static PaError StopStream( PaStream *stream );
|
|
static PaError AbortStream( PaStream *stream );
|
|
static PaError IsStreamStopped( PaStream *s );
|
|
static PaError IsStreamActive( PaStream *stream );
|
|
static PaTime GetStreamTime( PaStream *stream );
|
|
static double GetStreamCpuLoad( PaStream* stream );
|
|
static PaError ReadStream( PaStream* stream, void *buffer, unsigned long frames );
|
|
static PaError WriteStream( PaStream* stream, const void *buffer, unsigned long frames );
|
|
static signed long GetStreamReadAvailable( PaStream* stream );
|
|
static signed long GetStreamWriteAvailable( PaStream* stream );
|
|
|
|
/* our ASIO callback functions */
|
|
|
|
static void bufferSwitch(long index, ASIOBool processNow);
|
|
static ASIOTime *bufferSwitchTimeInfo(ASIOTime *timeInfo, long index, ASIOBool processNow);
|
|
static void sampleRateChanged(ASIOSampleRate sRate);
|
|
static long asioMessages(long selector, long value, void* message, double* opt);
|
|
|
|
static ASIOCallbacks asioCallbacks_ =
|
|
{ bufferSwitch, sampleRateChanged, asioMessages, bufferSwitchTimeInfo };
|
|
|
|
|
|
#define PA_ASIO_SET_LAST_HOST_ERROR( errorCode, errorText ) \
|
|
PaUtil_SetLastHostErrorInfo( paASIO, errorCode, errorText )
|
|
|
|
|
|
static void PaAsio_SetLastSystemError( DWORD errorCode )
|
|
{
|
|
LPVOID lpMsgBuf;
|
|
FormatMessage(
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
|
|
NULL,
|
|
errorCode,
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
|
|
(LPTSTR) &lpMsgBuf,
|
|
0,
|
|
NULL
|
|
);
|
|
PaUtil_SetLastHostErrorInfo( paASIO, errorCode, (const char*)lpMsgBuf );
|
|
LocalFree( lpMsgBuf );
|
|
}
|
|
|
|
#define PA_ASIO_SET_LAST_SYSTEM_ERROR( errorCode ) \
|
|
PaAsio_SetLastSystemError( errorCode )
|
|
|
|
|
|
static const char* PaAsio_GetAsioErrorText( ASIOError asioError )
|
|
{
|
|
const char *result;
|
|
|
|
switch( asioError ){
|
|
case ASE_OK:
|
|
case ASE_SUCCESS: result = "Success"; break;
|
|
case ASE_NotPresent: result = "Hardware input or output is not present or available"; break;
|
|
case ASE_HWMalfunction: result = "Hardware is malfunctioning"; break;
|
|
case ASE_InvalidParameter: result = "Input parameter invalid"; break;
|
|
case ASE_InvalidMode: result = "Hardware is in a bad mode or used in a bad mode"; break;
|
|
case ASE_SPNotAdvancing: result = "Hardware is not running when sample position is inquired"; break;
|
|
case ASE_NoClock: result = "Sample clock or rate cannot be determined or is not present"; break;
|
|
case ASE_NoMemory: result = "Not enough memory for completing the request"; break;
|
|
default: result = "Unknown ASIO error"; break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
#define PA_ASIO_SET_LAST_ASIO_ERROR( asioError ) \
|
|
PaUtil_SetLastHostErrorInfo( paASIO, asioError, PaAsio_GetAsioErrorText( asioError ) )
|
|
|
|
|
|
|
|
|
|
// Atomic increment and decrement operations
|
|
#if MAC
|
|
/* need to be implemented on Mac */
|
|
inline long PaAsio_AtomicIncrement(volatile long* v) {return ++(*const_cast<long*>(v));}
|
|
inline long PaAsio_AtomicDecrement(volatile long* v) {return --(*const_cast<long*>(v));}
|
|
#elif WINDOWS
|
|
inline long PaAsio_AtomicIncrement(volatile long* v) {return InterlockedIncrement(const_cast<long*>(v));}
|
|
inline long PaAsio_AtomicDecrement(volatile long* v) {return InterlockedDecrement(const_cast<long*>(v));}
|
|
#endif
|
|
|
|
|
|
|
|
typedef struct PaAsioDriverInfo
|
|
{
|
|
ASIODriverInfo asioDriverInfo;
|
|
long inputChannelCount, outputChannelCount;
|
|
long bufferMinSize, bufferMaxSize, bufferPreferredSize, bufferGranularity;
|
|
bool postOutput;
|
|
}
|
|
PaAsioDriverInfo;
|
|
|
|
|
|
/* PaAsioHostApiRepresentation - host api datastructure specific to this implementation */
|
|
|
|
typedef struct
|
|
{
|
|
PaUtilHostApiRepresentation inheritedHostApiRep;
|
|
PaUtilStreamInterface callbackStreamInterface;
|
|
PaUtilStreamInterface blockingStreamInterface;
|
|
|
|
PaUtilAllocationGroup *allocations;
|
|
|
|
void *systemSpecific;
|
|
|
|
/* the ASIO C API only allows one ASIO driver to be open at a time,
|
|
so we keep track of whether we have the driver open here, and
|
|
use this information to return errors from OpenStream if the
|
|
driver is already open.
|
|
|
|
openAsioDeviceIndex will be PaNoDevice if there is no device open
|
|
and a valid pa_asio (not global) device index otherwise.
|
|
|
|
openAsioDriverInfo is populated with the driver info for the
|
|
currently open device (if any)
|
|
*/
|
|
PaDeviceIndex openAsioDeviceIndex;
|
|
PaAsioDriverInfo openAsioDriverInfo;
|
|
}
|
|
PaAsioHostApiRepresentation;
|
|
|
|
|
|
/*
|
|
Retrieve <driverCount> driver names from ASIO, returned in a char**
|
|
allocated in <group>.
|
|
*/
|
|
static char **GetAsioDriverNames( PaUtilAllocationGroup *group, long driverCount )
|
|
{
|
|
char **result = 0;
|
|
int i;
|
|
|
|
result =(char**)PaUtil_GroupAllocateMemory(
|
|
group, sizeof(char*) * driverCount );
|
|
if( !result )
|
|
goto error;
|
|
|
|
result[0] = (char*)PaUtil_GroupAllocateMemory(
|
|
group, 32 * driverCount );
|
|
if( !result[0] )
|
|
goto error;
|
|
|
|
for( i=0; i<driverCount; ++i )
|
|
result[i] = result[0] + (32 * i);
|
|
|
|
asioDrivers->getDriverNames( result, driverCount );
|
|
|
|
error:
|
|
return result;
|
|
}
|
|
|
|
|
|
static PaSampleFormat AsioSampleTypeToPaNativeSampleFormat(ASIOSampleType type)
|
|
{
|
|
switch (type) {
|
|
case ASIOSTInt16MSB:
|
|
case ASIOSTInt16LSB:
|
|
return paInt16;
|
|
|
|
case ASIOSTFloat32MSB:
|
|
case ASIOSTFloat32LSB:
|
|
case ASIOSTFloat64MSB:
|
|
case ASIOSTFloat64LSB:
|
|
return paFloat32;
|
|
|
|
case ASIOSTInt32MSB:
|
|
case ASIOSTInt32LSB:
|
|
case ASIOSTInt32MSB16:
|
|
case ASIOSTInt32LSB16:
|
|
case ASIOSTInt32MSB18:
|
|
case ASIOSTInt32MSB20:
|
|
case ASIOSTInt32MSB24:
|
|
case ASIOSTInt32LSB18:
|
|
case ASIOSTInt32LSB20:
|
|
case ASIOSTInt32LSB24:
|
|
return paInt32;
|
|
|
|
case ASIOSTInt24MSB:
|
|
case ASIOSTInt24LSB:
|
|
return paInt24;
|
|
|
|
default:
|
|
return paCustomFormat;
|
|
}
|
|
}
|
|
|
|
void AsioSampleTypeLOG(ASIOSampleType type)
|
|
{
|
|
switch (type) {
|
|
case ASIOSTInt16MSB: PA_DEBUG(("ASIOSTInt16MSB\n")); break;
|
|
case ASIOSTInt16LSB: PA_DEBUG(("ASIOSTInt16LSB\n")); break;
|
|
case ASIOSTFloat32MSB:PA_DEBUG(("ASIOSTFloat32MSB\n"));break;
|
|
case ASIOSTFloat32LSB:PA_DEBUG(("ASIOSTFloat32LSB\n"));break;
|
|
case ASIOSTFloat64MSB:PA_DEBUG(("ASIOSTFloat64MSB\n"));break;
|
|
case ASIOSTFloat64LSB:PA_DEBUG(("ASIOSTFloat64LSB\n"));break;
|
|
case ASIOSTInt32MSB: PA_DEBUG(("ASIOSTInt32MSB\n")); break;
|
|
case ASIOSTInt32LSB: PA_DEBUG(("ASIOSTInt32LSB\n")); break;
|
|
case ASIOSTInt32MSB16:PA_DEBUG(("ASIOSTInt32MSB16\n"));break;
|
|
case ASIOSTInt32LSB16:PA_DEBUG(("ASIOSTInt32LSB16\n"));break;
|
|
case ASIOSTInt32MSB18:PA_DEBUG(("ASIOSTInt32MSB18\n"));break;
|
|
case ASIOSTInt32MSB20:PA_DEBUG(("ASIOSTInt32MSB20\n"));break;
|
|
case ASIOSTInt32MSB24:PA_DEBUG(("ASIOSTInt32MSB24\n"));break;
|
|
case ASIOSTInt32LSB18:PA_DEBUG(("ASIOSTInt32LSB18\n"));break;
|
|
case ASIOSTInt32LSB20:PA_DEBUG(("ASIOSTInt32LSB20\n"));break;
|
|
case ASIOSTInt32LSB24:PA_DEBUG(("ASIOSTInt32LSB24\n"));break;
|
|
case ASIOSTInt24MSB: PA_DEBUG(("ASIOSTInt24MSB\n")); break;
|
|
case ASIOSTInt24LSB: PA_DEBUG(("ASIOSTInt24LSB\n")); break;
|
|
default: PA_DEBUG(("Custom Format%d\n",type));break;
|
|
|
|
}
|
|
}
|
|
|
|
static int BytesPerAsioSample( ASIOSampleType sampleType )
|
|
{
|
|
switch (sampleType) {
|
|
case ASIOSTInt16MSB:
|
|
case ASIOSTInt16LSB:
|
|
return 2;
|
|
|
|
case ASIOSTFloat64MSB:
|
|
case ASIOSTFloat64LSB:
|
|
return 8;
|
|
|
|
case ASIOSTFloat32MSB:
|
|
case ASIOSTFloat32LSB:
|
|
case ASIOSTInt32MSB:
|
|
case ASIOSTInt32LSB:
|
|
case ASIOSTInt32MSB16:
|
|
case ASIOSTInt32LSB16:
|
|
case ASIOSTInt32MSB18:
|
|
case ASIOSTInt32MSB20:
|
|
case ASIOSTInt32MSB24:
|
|
case ASIOSTInt32LSB18:
|
|
case ASIOSTInt32LSB20:
|
|
case ASIOSTInt32LSB24:
|
|
return 4;
|
|
|
|
case ASIOSTInt24MSB:
|
|
case ASIOSTInt24LSB:
|
|
return 3;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
static void Swap16( void *buffer, long shift, long count )
|
|
{
|
|
unsigned short *p = (unsigned short*)buffer;
|
|
unsigned short temp;
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p;
|
|
*p++ = (unsigned short)((temp<<8) | (temp>>8));
|
|
}
|
|
}
|
|
|
|
static void Swap24( void *buffer, long shift, long count )
|
|
{
|
|
unsigned char *p = (unsigned char*)buffer;
|
|
unsigned char temp;
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p;
|
|
*p = *(p+2);
|
|
*(p+2) = temp;
|
|
p += 3;
|
|
}
|
|
}
|
|
|
|
#define PA_SWAP32_( x ) ((x>>24) | ((x>>8)&0xFF00) | ((x<<8)&0xFF0000) | (x<<24));
|
|
|
|
static void Swap32( void *buffer, long shift, long count )
|
|
{
|
|
unsigned long *p = (unsigned long*)buffer;
|
|
unsigned long temp;
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p;
|
|
*p++ = PA_SWAP32_( temp);
|
|
}
|
|
}
|
|
|
|
static void SwapShiftLeft32( void *buffer, long shift, long count )
|
|
{
|
|
unsigned long *p = (unsigned long*)buffer;
|
|
unsigned long temp;
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p;
|
|
temp = PA_SWAP32_( temp);
|
|
*p++ = temp << shift;
|
|
}
|
|
}
|
|
|
|
static void ShiftRightSwap32( void *buffer, long shift, long count )
|
|
{
|
|
unsigned long *p = (unsigned long*)buffer;
|
|
unsigned long temp;
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p >> shift;
|
|
*p++ = PA_SWAP32_( temp);
|
|
}
|
|
}
|
|
|
|
static void ShiftLeft32( void *buffer, long shift, long count )
|
|
{
|
|
unsigned long *p = (unsigned long*)buffer;
|
|
unsigned long temp;
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p;
|
|
*p++ = temp << shift;
|
|
}
|
|
}
|
|
|
|
static void ShiftRight32( void *buffer, long shift, long count )
|
|
{
|
|
unsigned long *p = (unsigned long*)buffer;
|
|
unsigned long temp;
|
|
|
|
while( count-- )
|
|
{
|
|
temp = *p;
|
|
*p++ = temp >> shift;
|
|
}
|
|
}
|
|
|
|
#define PA_SWAP_( x, y ) temp=x; x = y; y = temp;
|
|
|
|
static void Swap64ConvertFloat64ToFloat32( void *buffer, long shift, long count )
|
|
{
|
|
double *in = (double*)buffer;
|
|
float *out = (float*)buffer;
|
|
unsigned char *p;
|
|
unsigned char temp;
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
{
|
|
p = (unsigned char*)in;
|
|
PA_SWAP_( p[0], p[7] );
|
|
PA_SWAP_( p[1], p[6] );
|
|
PA_SWAP_( p[2], p[5] );
|
|
PA_SWAP_( p[3], p[4] );
|
|
|
|
*out++ = (float) (*in++);
|
|
}
|
|
}
|
|
|
|
static void ConvertFloat64ToFloat32( void *buffer, long shift, long count )
|
|
{
|
|
double *in = (double*)buffer;
|
|
float *out = (float*)buffer;
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
*out++ = (float) (*in++);
|
|
}
|
|
|
|
static void ConvertFloat32ToFloat64Swap64( void *buffer, long shift, long count )
|
|
{
|
|
float *in = ((float*)buffer) + (count-1);
|
|
double *out = ((double*)buffer) + (count-1);
|
|
unsigned char *p;
|
|
unsigned char temp;
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
{
|
|
*out = *in--;
|
|
|
|
p = (unsigned char*)out;
|
|
PA_SWAP_( p[0], p[7] );
|
|
PA_SWAP_( p[1], p[6] );
|
|
PA_SWAP_( p[2], p[5] );
|
|
PA_SWAP_( p[3], p[4] );
|
|
|
|
out--;
|
|
}
|
|
}
|
|
|
|
static void ConvertFloat32ToFloat64( void *buffer, long shift, long count )
|
|
{
|
|
float *in = ((float*)buffer) + (count-1);
|
|
double *out = ((double*)buffer) + (count-1);
|
|
(void) shift; /* unused parameter */
|
|
|
|
while( count-- )
|
|
*out-- = *in--;
|
|
}
|
|
|
|
#ifdef MAC
|
|
#define PA_MSB_IS_NATIVE_
|
|
#undef PA_LSB_IS_NATIVE_
|
|
#endif
|
|
|
|
#ifdef WINDOWS
|
|
#undef PA_MSB_IS_NATIVE_
|
|
#define PA_LSB_IS_NATIVE_
|
|
#endif
|
|
|
|
typedef void PaAsioBufferConverter( void *, long, long );
|
|
|
|
static void SelectAsioToPaConverter( ASIOSampleType type, PaAsioBufferConverter **converter, long *shift )
|
|
{
|
|
*shift = 0;
|
|
*converter = 0;
|
|
|
|
switch (type) {
|
|
case ASIOSTInt16MSB:
|
|
/* dest: paInt16, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap16;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt16LSB:
|
|
/* dest: paInt16, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap16;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat32MSB:
|
|
/* dest: paFloat32, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat32LSB:
|
|
/* dest: paFloat32, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat64MSB:
|
|
/* dest: paFloat32, in-place conversion to/from float32, possible byte swap*/
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap64ConvertFloat64ToFloat32;
|
|
#else
|
|
*converter = ConvertFloat64ToFloat32;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat64LSB:
|
|
/* dest: paFloat32, in-place conversion to/from float32, possible byte swap*/
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap64ConvertFloat64ToFloat32;
|
|
#else
|
|
*converter = ConvertFloat64ToFloat32;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt32MSB:
|
|
/* dest: paInt32, no conversion necessary, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt32LSB:
|
|
/* dest: paInt32, no conversion necessary, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt32MSB16:
|
|
/* dest: paInt32, 16 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 16;
|
|
break;
|
|
case ASIOSTInt32MSB18:
|
|
/* dest: paInt32, 14 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 14;
|
|
break;
|
|
case ASIOSTInt32MSB20:
|
|
/* dest: paInt32, 12 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 12;
|
|
break;
|
|
case ASIOSTInt32MSB24:
|
|
/* dest: paInt32, 8 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 8;
|
|
break;
|
|
case ASIOSTInt32LSB16:
|
|
/* dest: paInt32, 16 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 16;
|
|
break;
|
|
case ASIOSTInt32LSB18:
|
|
/* dest: paInt32, 14 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 14;
|
|
break;
|
|
case ASIOSTInt32LSB20:
|
|
/* dest: paInt32, 12 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 12;
|
|
break;
|
|
case ASIOSTInt32LSB24:
|
|
/* dest: paInt32, 8 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = SwapShiftLeft32;
|
|
#else
|
|
*converter = ShiftLeft32;
|
|
#endif
|
|
*shift = 8;
|
|
break;
|
|
case ASIOSTInt24MSB:
|
|
/* dest: paInt24, no conversion necessary, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap24;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt24LSB:
|
|
/* dest: paInt24, no conversion necessary, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap24;
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void SelectPaToAsioConverter( ASIOSampleType type, PaAsioBufferConverter **converter, long *shift )
|
|
{
|
|
*shift = 0;
|
|
*converter = 0;
|
|
|
|
switch (type) {
|
|
case ASIOSTInt16MSB:
|
|
/* src: paInt16, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap16;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt16LSB:
|
|
/* src: paInt16, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap16;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat32MSB:
|
|
/* src: paFloat32, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat32LSB:
|
|
/* src: paFloat32, no conversion necessary, possible byte swap*/
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat64MSB:
|
|
/* src: paFloat32, in-place conversion to/from float32, possible byte swap*/
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = ConvertFloat32ToFloat64Swap64;
|
|
#else
|
|
*converter = ConvertFloat32ToFloat64;
|
|
#endif
|
|
break;
|
|
case ASIOSTFloat64LSB:
|
|
/* src: paFloat32, in-place conversion to/from float32, possible byte swap*/
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = ConvertFloat32ToFloat64Swap64;
|
|
#else
|
|
*converter = ConvertFloat32ToFloat64;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt32MSB:
|
|
/* src: paInt32, no conversion necessary, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt32LSB:
|
|
/* src: paInt32, no conversion necessary, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap32;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt32MSB16:
|
|
/* src: paInt32, 16 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 16;
|
|
break;
|
|
case ASIOSTInt32MSB18:
|
|
/* src: paInt32, 14 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 14;
|
|
break;
|
|
case ASIOSTInt32MSB20:
|
|
/* src: paInt32, 12 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 12;
|
|
break;
|
|
case ASIOSTInt32MSB24:
|
|
/* src: paInt32, 8 bit shift, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 8;
|
|
break;
|
|
case ASIOSTInt32LSB16:
|
|
/* src: paInt32, 16 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 16;
|
|
break;
|
|
case ASIOSTInt32LSB18:
|
|
/* src: paInt32, 14 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 14;
|
|
break;
|
|
case ASIOSTInt32LSB20:
|
|
/* src: paInt32, 12 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 12;
|
|
break;
|
|
case ASIOSTInt32LSB24:
|
|
/* src: paInt32, 8 bit shift, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = ShiftRightSwap32;
|
|
#else
|
|
*converter = ShiftRight32;
|
|
#endif
|
|
*shift = 8;
|
|
break;
|
|
case ASIOSTInt24MSB:
|
|
/* src: paInt24, no conversion necessary, possible byte swap */
|
|
#ifdef PA_LSB_IS_NATIVE_
|
|
*converter = Swap24;
|
|
#endif
|
|
break;
|
|
case ASIOSTInt24LSB:
|
|
/* src: paInt24, no conversion necessary, possible byte swap */
|
|
#ifdef PA_MSB_IS_NATIVE_
|
|
*converter = Swap24;
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
typedef struct PaAsioDeviceInfo
|
|
{
|
|
PaDeviceInfo commonDeviceInfo;
|
|
long minBufferSize;
|
|
long maxBufferSize;
|
|
long preferredBufferSize;
|
|
long bufferGranularity;
|
|
|
|
ASIOChannelInfo *asioChannelInfos;
|
|
}
|
|
PaAsioDeviceInfo;
|
|
|
|
|
|
PaError PaAsio_GetAvailableLatencyValues( PaDeviceIndex device,
|
|
long *minLatency, long *maxLatency, long *preferredLatency, long *granularity )
|
|
{
|
|
PaError result;
|
|
PaUtilHostApiRepresentation *hostApi;
|
|
PaDeviceIndex hostApiDevice;
|
|
|
|
result = PaUtil_GetHostApiRepresentation( &hostApi, paASIO );
|
|
|
|
if( result == paNoError )
|
|
{
|
|
result = PaUtil_DeviceIndexToHostApiDeviceIndex( &hostApiDevice, device, hostApi );
|
|
|
|
if( result == paNoError )
|
|
{
|
|
PaAsioDeviceInfo *asioDeviceInfo =
|
|
(PaAsioDeviceInfo*)hostApi->deviceInfos[hostApiDevice];
|
|
|
|
*minLatency = asioDeviceInfo->minBufferSize;
|
|
*maxLatency = asioDeviceInfo->maxBufferSize;
|
|
*preferredLatency = asioDeviceInfo->preferredBufferSize;
|
|
*granularity = asioDeviceInfo->bufferGranularity;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
load the asio driver named by <driverName> and return statistics about
|
|
the driver in info. If no error occurred, the driver will remain open
|
|
and must be closed by the called by calling ASIOExit() - if an error
|
|
is returned the driver will already be closed.
|
|
*/
|
|
static PaError LoadAsioDriver( const char *driverName,
|
|
PaAsioDriverInfo *driverInfo, void *systemSpecific )
|
|
{
|
|
PaError result = paNoError;
|
|
ASIOError asioError;
|
|
int asioIsInitialized = 0;
|
|
|
|
if( !loadAsioDriver( const_cast<char*>(driverName) ) )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_HOST_ERROR( 0, "Failed to load ASIO driver" );
|
|
goto error;
|
|
}
|
|
|
|
memset( &driverInfo->asioDriverInfo, 0, sizeof(ASIODriverInfo) );
|
|
driverInfo->asioDriverInfo.asioVersion = 2;
|
|
driverInfo->asioDriverInfo.sysRef = systemSpecific;
|
|
if( (asioError = ASIOInit( &driverInfo->asioDriverInfo )) != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
else
|
|
{
|
|
asioIsInitialized = 1;
|
|
}
|
|
|
|
if( (asioError = ASIOGetChannels(&driverInfo->inputChannelCount,
|
|
&driverInfo->outputChannelCount)) != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
|
|
if( (asioError = ASIOGetBufferSize(&driverInfo->bufferMinSize,
|
|
&driverInfo->bufferMaxSize, &driverInfo->bufferPreferredSize,
|
|
&driverInfo->bufferGranularity)) != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
|
|
if( ASIOOutputReady() == ASE_OK )
|
|
driverInfo->postOutput = true;
|
|
else
|
|
driverInfo->postOutput = false;
|
|
|
|
return result;
|
|
|
|
error:
|
|
if( asioIsInitialized )
|
|
ASIOExit();
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
#define PA_DEFAULTSAMPLERATESEARCHORDER_COUNT_ 13 /* must be the same number of elements as in the array below */
|
|
static ASIOSampleRate defaultSampleRateSearchOrder_[]
|
|
= {44100.0, 48000.0, 32000.0, 24000.0, 22050.0, 88200.0, 96000.0,
|
|
192000.0, 16000.0, 12000.0, 11025.0, 9600.0, 8000.0 };
|
|
|
|
|
|
PaError PaAsio_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
|
|
{
|
|
PaError result = paNoError;
|
|
int i, driverCount;
|
|
PaAsioHostApiRepresentation *asioHostApi;
|
|
PaAsioDeviceInfo *deviceInfoArray;
|
|
char **names;
|
|
PaAsioDriverInfo paAsioDriverInfo;
|
|
|
|
asioHostApi = (PaAsioHostApiRepresentation*)PaUtil_AllocateMemory( sizeof(PaAsioHostApiRepresentation) );
|
|
if( !asioHostApi )
|
|
{
|
|
result = paInsufficientMemory;
|
|
goto error;
|
|
}
|
|
|
|
asioHostApi->allocations = PaUtil_CreateAllocationGroup();
|
|
if( !asioHostApi->allocations )
|
|
{
|
|
result = paInsufficientMemory;
|
|
goto error;
|
|
}
|
|
|
|
asioHostApi->systemSpecific = 0;
|
|
asioHostApi->openAsioDeviceIndex = paNoDevice;
|
|
|
|
*hostApi = &asioHostApi->inheritedHostApiRep;
|
|
(*hostApi)->info.structVersion = 1;
|
|
|
|
(*hostApi)->info.type = paASIO;
|
|
(*hostApi)->info.name = "ASIO";
|
|
(*hostApi)->info.deviceCount = 0;
|
|
|
|
#ifdef WINDOWS
|
|
/* use desktop window as system specific ptr */
|
|
asioHostApi->systemSpecific = GetDesktopWindow();
|
|
CoInitialize(NULL);
|
|
#endif
|
|
|
|
/* MUST BE CHECKED : to force fragments loading on Mac */
|
|
loadAsioDriver( "dummy" );
|
|
|
|
/* driverCount is the number of installed drivers - not necessarily
|
|
the number of installed physical devices. */
|
|
#if MAC
|
|
driverCount = asioDrivers->getNumFragments();
|
|
#elif WINDOWS
|
|
driverCount = asioDrivers->asioGetNumDev();
|
|
#endif
|
|
|
|
if( driverCount > 0 )
|
|
{
|
|
names = GetAsioDriverNames( asioHostApi->allocations, driverCount );
|
|
if( !names )
|
|
{
|
|
result = paInsufficientMemory;
|
|
goto error;
|
|
}
|
|
|
|
|
|
/* allocate enough space for all drivers, even if some aren't installed */
|
|
|
|
(*hostApi)->deviceInfos = (PaDeviceInfo**)PaUtil_GroupAllocateMemory(
|
|
asioHostApi->allocations, sizeof(PaDeviceInfo*) * driverCount );
|
|
if( !(*hostApi)->deviceInfos )
|
|
{
|
|
result = paInsufficientMemory;
|
|
goto error;
|
|
}
|
|
|
|
/* allocate all device info structs in a contiguous block */
|
|
deviceInfoArray = (PaAsioDeviceInfo*)PaUtil_GroupAllocateMemory(
|
|
asioHostApi->allocations, sizeof(PaAsioDeviceInfo) * driverCount );
|
|
if( !deviceInfoArray )
|
|
{
|
|
result = paInsufficientMemory;
|
|
goto error;
|
|
}
|
|
|
|
for( i=0; i < driverCount; ++i )
|
|
{
|
|
|
|
PA_DEBUG(("ASIO names[%d]:%s\n",i,names[i]));
|
|
|
|
// Since portaudio opens ALL ASIO drivers, and no one else does that,
|
|
// we face fact that some drivers were not meant for it, drivers which act
|
|
// like shells on top of REAL drivers, for instance.
|
|
// so we get duplicate handles, locks and other problems.
|
|
// so lets NOT try to load any such wrappers.
|
|
// The ones i [davidv] know of so far are:
|
|
|
|
if ( strcmp (names[i],"ASIO DirectX Full Duplex Driver") == 0
|
|
|| strcmp (names[i],"ASIO Multimedia Driver") == 0
|
|
|| strncmp(names[i],"Premiere",8) == 0 //"Premiere Elements Windows Sound 1.0"
|
|
|| strncmp(names[i],"Adobe",5) == 0 ) //"Adobe Default Windows Sound 1.5"
|
|
{
|
|
PA_DEBUG(("BLACKLISTED!!!\n"));
|
|
continue;
|
|
}
|
|
|
|
|
|
/* Attempt to load the asio driver... */
|
|
if( LoadAsioDriver( names[i], &paAsioDriverInfo, asioHostApi->systemSpecific ) == paNoError )
|
|
{
|
|
PaAsioDeviceInfo *asioDeviceInfo = &deviceInfoArray[ (*hostApi)->info.deviceCount ];
|
|
PaDeviceInfo *deviceInfo = &asioDeviceInfo->commonDeviceInfo;
|
|
|
|
deviceInfo->structVersion = 2;
|
|
deviceInfo->hostApi = hostApiIndex;
|
|
|
|
deviceInfo->name = names[i];
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d name = %s\n", i,deviceInfo->name));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d inputChannels = %d\n", i, paAsioDriverInfo.inputChannelCount));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d outputChannels = %d\n", i, paAsioDriverInfo.outputChannelCount));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d bufferMinSize = %d\n", i, paAsioDriverInfo.bufferMinSize));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d bufferMaxSize = %d\n", i, paAsioDriverInfo.bufferMaxSize));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d bufferPreferredSize = %d\n", i, paAsioDriverInfo.bufferPreferredSize));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d bufferGranularity = %d\n", i, paAsioDriverInfo.bufferGranularity));
|
|
|
|
deviceInfo->maxInputChannels = paAsioDriverInfo.inputChannelCount;
|
|
deviceInfo->maxOutputChannels = paAsioDriverInfo.outputChannelCount;
|
|
|
|
deviceInfo->defaultSampleRate = 0.;
|
|
bool foundDefaultSampleRate = false;
|
|
for( int j=0; j < PA_DEFAULTSAMPLERATESEARCHORDER_COUNT_; ++j )
|
|
{
|
|
ASIOError asioError = ASIOCanSampleRate( defaultSampleRateSearchOrder_[j] );
|
|
if( asioError != ASE_NoClock && asioError != ASE_NotPresent )
|
|
{
|
|
deviceInfo->defaultSampleRate = defaultSampleRateSearchOrder_[j];
|
|
foundDefaultSampleRate = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d defaultSampleRate = %f\n", i, deviceInfo->defaultSampleRate));
|
|
|
|
if( foundDefaultSampleRate ){
|
|
|
|
/* calculate default latency values from bufferPreferredSize
|
|
for default low latency, and bufferPreferredSize * 3
|
|
for default high latency.
|
|
use the default sample rate to convert from samples to
|
|
seconds. Without knowing what sample rate the user will
|
|
use this is the best we can do.
|
|
*/
|
|
|
|
double defaultLowLatency =
|
|
paAsioDriverInfo.bufferPreferredSize / deviceInfo->defaultSampleRate;
|
|
|
|
deviceInfo->defaultLowInputLatency = defaultLowLatency;
|
|
deviceInfo->defaultLowOutputLatency = defaultLowLatency;
|
|
|
|
long defaultHighLatencyBufferSize =
|
|
paAsioDriverInfo.bufferPreferredSize * 3;
|
|
|
|
if( defaultHighLatencyBufferSize > paAsioDriverInfo.bufferMaxSize )
|
|
defaultHighLatencyBufferSize = paAsioDriverInfo.bufferMaxSize;
|
|
|
|
double defaultHighLatency =
|
|
defaultHighLatencyBufferSize / deviceInfo->defaultSampleRate;
|
|
|
|
if( defaultHighLatency < defaultLowLatency )
|
|
defaultHighLatency = defaultLowLatency; /* just incase the driver returns something strange */
|
|
|
|
deviceInfo->defaultHighInputLatency = defaultHighLatency;
|
|
deviceInfo->defaultHighOutputLatency = defaultHighLatency;
|
|
|
|
}else{
|
|
|
|
deviceInfo->defaultLowInputLatency = 0.;
|
|
deviceInfo->defaultLowOutputLatency = 0.;
|
|
deviceInfo->defaultHighInputLatency = 0.;
|
|
deviceInfo->defaultHighOutputLatency = 0.;
|
|
}
|
|
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d defaultLowInputLatency = %f\n", i, deviceInfo->defaultLowInputLatency));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d defaultLowOutputLatency = %f\n", i, deviceInfo->defaultLowOutputLatency));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d defaultHighInputLatency = %f\n", i, deviceInfo->defaultHighInputLatency));
|
|
PA_DEBUG(("PaAsio_Initialize: drv:%d defaultHighOutputLatency = %f\n", i, deviceInfo->defaultHighOutputLatency));
|
|
|
|
asioDeviceInfo->minBufferSize = paAsioDriverInfo.bufferMinSize;
|
|
asioDeviceInfo->maxBufferSize = paAsioDriverInfo.bufferMaxSize;
|
|
asioDeviceInfo->preferredBufferSize = paAsioDriverInfo.bufferPreferredSize;
|
|
asioDeviceInfo->bufferGranularity = paAsioDriverInfo.bufferGranularity;
|
|
|
|
|
|
asioDeviceInfo->asioChannelInfos = (ASIOChannelInfo*)PaUtil_GroupAllocateMemory(
|
|
asioHostApi->allocations,
|
|
sizeof(ASIOChannelInfo) * (deviceInfo->maxInputChannels
|
|
+ deviceInfo->maxOutputChannels) );
|
|
if( !asioDeviceInfo->asioChannelInfos )
|
|
{
|
|
result = paInsufficientMemory;
|
|
goto error;
|
|
}
|
|
|
|
int a;
|
|
|
|
for( a=0; a < deviceInfo->maxInputChannels; ++a ){
|
|
asioDeviceInfo->asioChannelInfos[a].channel = a;
|
|
asioDeviceInfo->asioChannelInfos[a].isInput = ASIOTrue;
|
|
ASIOError asioError = ASIOGetChannelInfo( &asioDeviceInfo->asioChannelInfos[a] );
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
for( a=0; a < deviceInfo->maxOutputChannels; ++a ){
|
|
int b = deviceInfo->maxInputChannels + a;
|
|
asioDeviceInfo->asioChannelInfos[b].channel = a;
|
|
asioDeviceInfo->asioChannelInfos[b].isInput = ASIOFalse;
|
|
ASIOError asioError = ASIOGetChannelInfo( &asioDeviceInfo->asioChannelInfos[b] );
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
|
|
/* unload the driver */
|
|
ASIOExit();
|
|
|
|
(*hostApi)->deviceInfos[ (*hostApi)->info.deviceCount ] = deviceInfo;
|
|
++(*hostApi)->info.deviceCount;
|
|
}
|
|
}
|
|
}
|
|
|
|
if( (*hostApi)->info.deviceCount > 0 )
|
|
{
|
|
(*hostApi)->info.defaultInputDevice = 0;
|
|
(*hostApi)->info.defaultOutputDevice = 0;
|
|
}
|
|
else
|
|
{
|
|
(*hostApi)->info.defaultInputDevice = paNoDevice;
|
|
(*hostApi)->info.defaultOutputDevice = paNoDevice;
|
|
}
|
|
|
|
|
|
(*hostApi)->Terminate = Terminate;
|
|
(*hostApi)->OpenStream = OpenStream;
|
|
(*hostApi)->IsFormatSupported = IsFormatSupported;
|
|
|
|
PaUtil_InitializeStreamInterface( &asioHostApi->callbackStreamInterface, CloseStream, StartStream,
|
|
StopStream, AbortStream, IsStreamStopped, IsStreamActive,
|
|
GetStreamTime, GetStreamCpuLoad,
|
|
PaUtil_DummyRead, PaUtil_DummyWrite,
|
|
PaUtil_DummyGetReadAvailable, PaUtil_DummyGetWriteAvailable );
|
|
|
|
PaUtil_InitializeStreamInterface( &asioHostApi->blockingStreamInterface, CloseStream, StartStream,
|
|
StopStream, AbortStream, IsStreamStopped, IsStreamActive,
|
|
GetStreamTime, PaUtil_DummyGetCpuLoad,
|
|
ReadStream, WriteStream, GetStreamReadAvailable, GetStreamWriteAvailable );
|
|
|
|
return result;
|
|
|
|
error:
|
|
if( asioHostApi )
|
|
{
|
|
if( asioHostApi->allocations )
|
|
{
|
|
PaUtil_FreeAllAllocations( asioHostApi->allocations );
|
|
PaUtil_DestroyAllocationGroup( asioHostApi->allocations );
|
|
}
|
|
|
|
PaUtil_FreeMemory( asioHostApi );
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
static void Terminate( struct PaUtilHostApiRepresentation *hostApi )
|
|
{
|
|
PaAsioHostApiRepresentation *asioHostApi = (PaAsioHostApiRepresentation*)hostApi;
|
|
|
|
/*
|
|
IMPLEMENT ME:
|
|
- clean up any resources not handled by the allocation group
|
|
*/
|
|
|
|
if( asioHostApi->allocations )
|
|
{
|
|
PaUtil_FreeAllAllocations( asioHostApi->allocations );
|
|
PaUtil_DestroyAllocationGroup( asioHostApi->allocations );
|
|
}
|
|
|
|
PaUtil_FreeMemory( asioHostApi );
|
|
}
|
|
|
|
|
|
static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
|
|
const PaStreamParameters *inputParameters,
|
|
const PaStreamParameters *outputParameters,
|
|
double sampleRate )
|
|
{
|
|
PaError result = paNoError;
|
|
PaAsioHostApiRepresentation *asioHostApi = (PaAsioHostApiRepresentation*)hostApi;
|
|
PaAsioDriverInfo *driverInfo = &asioHostApi->openAsioDriverInfo;
|
|
int inputChannelCount, outputChannelCount;
|
|
PaSampleFormat inputSampleFormat, outputSampleFormat;
|
|
PaDeviceIndex asioDeviceIndex;
|
|
ASIOError asioError;
|
|
|
|
if( inputParameters && outputParameters )
|
|
{
|
|
/* full duplex ASIO stream must use the same device for input and output */
|
|
|
|
if( inputParameters->device != outputParameters->device )
|
|
return paBadIODeviceCombination;
|
|
}
|
|
|
|
if( inputParameters )
|
|
{
|
|
inputChannelCount = inputParameters->channelCount;
|
|
inputSampleFormat = inputParameters->sampleFormat;
|
|
|
|
/* all standard sample formats are supported by the buffer adapter,
|
|
this implementation doesn't support any custom sample formats */
|
|
if( inputSampleFormat & paCustomFormat )
|
|
return paSampleFormatNotSupported;
|
|
|
|
/* unless alternate device specification is supported, reject the use of
|
|
paUseHostApiSpecificDeviceSpecification */
|
|
|
|
if( inputParameters->device == paUseHostApiSpecificDeviceSpecification )
|
|
return paInvalidDevice;
|
|
|
|
asioDeviceIndex = inputParameters->device;
|
|
|
|
/* validate inputStreamInfo */
|
|
/** @todo do more validation here */
|
|
// if( inputParameters->hostApiSpecificStreamInfo )
|
|
// return paIncompatibleHostApiSpecificStreamInfo; /* this implementation doesn't use custom stream info */
|
|
}
|
|
else
|
|
{
|
|
inputChannelCount = 0;
|
|
}
|
|
|
|
if( outputParameters )
|
|
{
|
|
outputChannelCount = outputParameters->channelCount;
|
|
outputSampleFormat = outputParameters->sampleFormat;
|
|
|
|
/* all standard sample formats are supported by the buffer adapter,
|
|
this implementation doesn't support any custom sample formats */
|
|
if( outputSampleFormat & paCustomFormat )
|
|
return paSampleFormatNotSupported;
|
|
|
|
/* unless alternate device specification is supported, reject the use of
|
|
paUseHostApiSpecificDeviceSpecification */
|
|
|
|
if( outputParameters->device == paUseHostApiSpecificDeviceSpecification )
|
|
return paInvalidDevice;
|
|
|
|
asioDeviceIndex = outputParameters->device;
|
|
|
|
/* validate outputStreamInfo */
|
|
/** @todo do more validation here */
|
|
// if( outputParameters->hostApiSpecificStreamInfo )
|
|
// return paIncompatibleHostApiSpecificStreamInfo; /* this implementation doesn't use custom stream info */
|
|
}
|
|
else
|
|
{
|
|
outputChannelCount = 0;
|
|
}
|
|
|
|
|
|
|
|
/* if an ASIO device is open we can only get format information for the currently open device */
|
|
|
|
if( asioHostApi->openAsioDeviceIndex != paNoDevice
|
|
&& asioHostApi->openAsioDeviceIndex != asioDeviceIndex )
|
|
{
|
|
return paDeviceUnavailable;
|
|
}
|
|
|
|
|
|
/* NOTE: we load the driver and use its current settings
|
|
rather than the ones in our device info structure which may be stale */
|
|
|
|
/* open the device if it's not already open */
|
|
if( asioHostApi->openAsioDeviceIndex == paNoDevice )
|
|
{
|
|
result = LoadAsioDriver( asioHostApi->inheritedHostApiRep.deviceInfos[ asioDeviceIndex ]->name,
|
|
driverInfo, asioHostApi->systemSpecific );
|
|
if( result != paNoError )
|
|
return result;
|
|
}
|
|
|
|
/* check that input device can support inputChannelCount */
|
|
if( inputChannelCount > 0 )
|
|
{
|
|
if( inputChannelCount > driverInfo->inputChannelCount )
|
|
{
|
|
result = paInvalidChannelCount;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* check that output device can support outputChannelCount */
|
|
if( outputChannelCount )
|
|
{
|
|
if( outputChannelCount > driverInfo->outputChannelCount )
|
|
{
|
|
result = paInvalidChannelCount;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* query for sample rate support */
|
|
asioError = ASIOCanSampleRate( sampleRate );
|
|
if( asioError == ASE_NoClock || asioError == ASE_NotPresent )
|
|
{
|
|
result = paInvalidSampleRate;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
/* close the device if it wasn't already open */
|
|
if( asioHostApi->openAsioDeviceIndex == paNoDevice )
|
|
{
|
|
ASIOExit(); /* not sure if we should check for errors here */
|
|
}
|
|
|
|
if( result == paNoError )
|
|
return paFormatIsSupported;
|
|
else
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
/* PaAsioStream - a stream data structure specifically for this implementation */
|
|
|
|
typedef struct PaAsioStream
|
|
{
|
|
PaUtilStreamRepresentation streamRepresentation;
|
|
PaUtilCpuLoadMeasurer cpuLoadMeasurer;
|
|
PaUtilBufferProcessor bufferProcessor;
|
|
|
|
PaAsioHostApiRepresentation *asioHostApi;
|
|
unsigned long framesPerHostCallback;
|
|
|
|
/* ASIO driver info - these may not be needed for the life of the stream,
|
|
but store them here until we work out how format conversion is going
|
|
to work. */
|
|
|
|
ASIOBufferInfo *asioBufferInfos;
|
|
ASIOChannelInfo *asioChannelInfos;
|
|
long inputLatency, outputLatency; // actual latencies returned by asio
|
|
|
|
long inputChannelCount, outputChannelCount;
|
|
bool postOutput;
|
|
|
|
void **bufferPtrs; /* this is carved up for inputBufferPtrs and outputBufferPtrs */
|
|
void **inputBufferPtrs[2];
|
|
void **outputBufferPtrs[2];
|
|
|
|
PaAsioBufferConverter *inputBufferConverter;
|
|
long inputShift;
|
|
PaAsioBufferConverter *outputBufferConverter;
|
|
long outputShift;
|
|
|
|
volatile bool stopProcessing;
|
|
int stopPlayoutCount;
|
|
HANDLE completedBuffersPlayedEvent;
|
|
|
|
bool streamFinishedCallbackCalled;
|
|
volatile int isActive;
|
|
volatile bool zeroOutput; /* all future calls to the callback will output silence */
|
|
|
|
volatile long reenterCount;
|
|
volatile long reenterError;
|
|
|
|
PaStreamCallbackFlags callbackFlags;
|
|
}
|
|
PaAsioStream;
|
|
|
|
static PaAsioStream *theAsioStream = 0; /* due to ASIO sdk limitations there can be only one stream */
|
|
|
|
|
|
static void ZeroOutputBuffers( PaAsioStream *stream, long index )
|
|
{
|
|
int i;
|
|
|
|
for( i=0; i < stream->outputChannelCount; ++i )
|
|
{
|
|
void *buffer = stream->asioBufferInfos[ i + stream->inputChannelCount ].buffers[index];
|
|
|
|
int bytesPerSample = BytesPerAsioSample( stream->asioChannelInfos[ i + stream->inputChannelCount ].type );
|
|
|
|
memset( buffer, 0, stream->framesPerHostCallback * bytesPerSample );
|
|
}
|
|
}
|
|
|
|
|
|
static unsigned long SelectHostBufferSize( unsigned long suggestedLatencyFrames,
|
|
PaAsioDriverInfo *driverInfo )
|
|
{
|
|
unsigned long result;
|
|
|
|
if( suggestedLatencyFrames == 0 )
|
|
{
|
|
result = driverInfo->bufferPreferredSize;
|
|
}
|
|
else{
|
|
if( suggestedLatencyFrames <= (unsigned long)driverInfo->bufferMinSize )
|
|
{
|
|
result = driverInfo->bufferMinSize;
|
|
}
|
|
else if( suggestedLatencyFrames >= (unsigned long)driverInfo->bufferMaxSize )
|
|
{
|
|
result = driverInfo->bufferMaxSize;
|
|
}
|
|
else
|
|
{
|
|
if( driverInfo->bufferGranularity == -1 )
|
|
{
|
|
/* power-of-two */
|
|
result = 2;
|
|
|
|
while( result < suggestedLatencyFrames )
|
|
result *= 2;
|
|
|
|
if( result < (unsigned long)driverInfo->bufferMinSize )
|
|
result = driverInfo->bufferMinSize;
|
|
|
|
if( result > (unsigned long)driverInfo->bufferMaxSize )
|
|
result = driverInfo->bufferMaxSize;
|
|
}
|
|
else if( driverInfo->bufferGranularity == 0 )
|
|
{
|
|
/* the documentation states that bufferGranularity should be
|
|
zero when bufferMinSize, bufferMaxSize and
|
|
bufferPreferredSize are the same. We assume that is the case.
|
|
*/
|
|
|
|
result = driverInfo->bufferPreferredSize;
|
|
}
|
|
else
|
|
{
|
|
/* modulo granularity */
|
|
|
|
unsigned long remainder =
|
|
suggestedLatencyFrames % driverInfo->bufferGranularity;
|
|
|
|
if( remainder == 0 )
|
|
{
|
|
result = suggestedLatencyFrames;
|
|
}
|
|
else
|
|
{
|
|
result = suggestedLatencyFrames
|
|
+ (driverInfo->bufferGranularity - remainder);
|
|
|
|
if( result > (unsigned long)driverInfo->bufferMaxSize )
|
|
result = driverInfo->bufferMaxSize;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* returns channelSelectors if present */
|
|
|
|
static PaError ValidateAsioSpecificStreamInfo(
|
|
const PaStreamParameters *streamParameters,
|
|
const PaAsioStreamInfo *streamInfo,
|
|
int deviceChannelCount,
|
|
int **channelSelectors )
|
|
{
|
|
if( streamInfo )
|
|
{
|
|
if( streamInfo->size != sizeof( PaAsioStreamInfo )
|
|
|| streamInfo->version != 1 )
|
|
{
|
|
return paIncompatibleHostApiSpecificStreamInfo;
|
|
}
|
|
|
|
if( streamInfo->flags & paAsioUseChannelSelectors )
|
|
*channelSelectors = streamInfo->channelSelectors;
|
|
|
|
if( !(*channelSelectors) )
|
|
return paIncompatibleHostApiSpecificStreamInfo;
|
|
|
|
for( int i=0; i < streamParameters->channelCount; ++i ){
|
|
if( (*channelSelectors)[i] < 0
|
|
|| (*channelSelectors)[i] >= deviceChannelCount ){
|
|
return paInvalidChannelCount;
|
|
}
|
|
}
|
|
}
|
|
|
|
return paNoError;
|
|
}
|
|
|
|
|
|
/* see pa_hostapi.h for a list of validity guarantees made about OpenStream parameters */
|
|
|
|
static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
|
|
PaStream** s,
|
|
const PaStreamParameters *inputParameters,
|
|
const PaStreamParameters *outputParameters,
|
|
double sampleRate,
|
|
unsigned long framesPerBuffer,
|
|
PaStreamFlags streamFlags,
|
|
PaStreamCallback *streamCallback,
|
|
void *userData )
|
|
{
|
|
PaError result = paNoError;
|
|
PaAsioHostApiRepresentation *asioHostApi = (PaAsioHostApiRepresentation*)hostApi;
|
|
PaAsioStream *stream = 0;
|
|
PaAsioStreamInfo *inputStreamInfo, *outputStreamInfo;
|
|
unsigned long framesPerHostBuffer;
|
|
int inputChannelCount, outputChannelCount;
|
|
PaSampleFormat inputSampleFormat, outputSampleFormat;
|
|
PaSampleFormat hostInputSampleFormat, hostOutputSampleFormat;
|
|
unsigned long suggestedInputLatencyFrames;
|
|
unsigned long suggestedOutputLatencyFrames;
|
|
PaDeviceIndex asioDeviceIndex;
|
|
ASIOError asioError;
|
|
int asioIsInitialized = 0;
|
|
int asioBuffersCreated = 0;
|
|
int completedBuffersPlayedEventInited = 0;
|
|
int i;
|
|
PaAsioDriverInfo *driverInfo;
|
|
int *inputChannelSelectors = 0;
|
|
int *outputChannelSelectors = 0;
|
|
|
|
/* unless we move to using lower level ASIO calls, we can only have
|
|
one device open at a time */
|
|
if( asioHostApi->openAsioDeviceIndex != paNoDevice ){
|
|
PA_DEBUG(("OpenStream paDeviceUnavailable\n"));
|
|
return paDeviceUnavailable;
|
|
}
|
|
|
|
if( inputParameters && outputParameters )
|
|
{
|
|
/* full duplex ASIO stream must use the same device for input and output */
|
|
|
|
if( inputParameters->device != outputParameters->device ){
|
|
PA_DEBUG(("OpenStream paBadIODeviceCombination\n"));
|
|
return paBadIODeviceCombination;
|
|
}
|
|
}
|
|
|
|
if( inputParameters )
|
|
{
|
|
inputChannelCount = inputParameters->channelCount;
|
|
inputSampleFormat = inputParameters->sampleFormat;
|
|
suggestedInputLatencyFrames = (unsigned long)((inputParameters->suggestedLatency * sampleRate)+0.5f);
|
|
|
|
/* unless alternate device specification is supported, reject the use of
|
|
paUseHostApiSpecificDeviceSpecification */
|
|
if( inputParameters->device == paUseHostApiSpecificDeviceSpecification )
|
|
return paInvalidDevice;
|
|
|
|
asioDeviceIndex = inputParameters->device;
|
|
|
|
PaAsioDeviceInfo *asioDeviceInfo = (PaAsioDeviceInfo*)hostApi->deviceInfos[asioDeviceIndex];
|
|
|
|
/* validate hostApiSpecificStreamInfo */
|
|
inputStreamInfo = (PaAsioStreamInfo*)inputParameters->hostApiSpecificStreamInfo;
|
|
result = ValidateAsioSpecificStreamInfo( inputParameters, inputStreamInfo,
|
|
asioDeviceInfo->commonDeviceInfo.maxInputChannels,
|
|
&inputChannelSelectors
|
|
);
|
|
if( result != paNoError ) return result;
|
|
}
|
|
else
|
|
{
|
|
inputChannelCount = 0;
|
|
inputSampleFormat = 0;
|
|
suggestedInputLatencyFrames = 0;
|
|
}
|
|
|
|
if( outputParameters )
|
|
{
|
|
outputChannelCount = outputParameters->channelCount;
|
|
outputSampleFormat = outputParameters->sampleFormat;
|
|
suggestedOutputLatencyFrames = (unsigned long)((outputParameters->suggestedLatency * sampleRate)+0.5f);
|
|
|
|
/* unless alternate device specification is supported, reject the use of
|
|
paUseHostApiSpecificDeviceSpecification */
|
|
if( outputParameters->device == paUseHostApiSpecificDeviceSpecification )
|
|
return paInvalidDevice;
|
|
|
|
asioDeviceIndex = outputParameters->device;
|
|
|
|
PaAsioDeviceInfo *asioDeviceInfo = (PaAsioDeviceInfo*)hostApi->deviceInfos[asioDeviceIndex];
|
|
|
|
/* validate hostApiSpecificStreamInfo */
|
|
outputStreamInfo = (PaAsioStreamInfo*)outputParameters->hostApiSpecificStreamInfo;
|
|
result = ValidateAsioSpecificStreamInfo( outputParameters, outputStreamInfo,
|
|
asioDeviceInfo->commonDeviceInfo.maxOutputChannels,
|
|
&outputChannelSelectors
|
|
);
|
|
if( result != paNoError ) return result;
|
|
}
|
|
else
|
|
{
|
|
outputChannelCount = 0;
|
|
outputSampleFormat = 0;
|
|
suggestedOutputLatencyFrames = 0;
|
|
}
|
|
|
|
driverInfo = &asioHostApi->openAsioDriverInfo;
|
|
|
|
/* NOTE: we load the driver and use its current settings
|
|
rather than the ones in our device info structure which may be stale */
|
|
|
|
result = LoadAsioDriver( asioHostApi->inheritedHostApiRep.deviceInfos[ asioDeviceIndex ]->name,
|
|
driverInfo, asioHostApi->systemSpecific );
|
|
if( result == paNoError )
|
|
asioIsInitialized = 1;
|
|
else{
|
|
PA_DEBUG(("OpenStream ERROR1\n"));
|
|
goto error;
|
|
}
|
|
|
|
/* check that input device can support inputChannelCount */
|
|
if( inputChannelCount > 0 )
|
|
{
|
|
if( inputChannelCount > driverInfo->inputChannelCount )
|
|
{
|
|
result = paInvalidChannelCount;
|
|
PA_DEBUG(("OpenStream ERROR2\n"));
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
/* check that output device can support outputChannelCount */
|
|
if( outputChannelCount )
|
|
{
|
|
if( outputChannelCount > driverInfo->outputChannelCount )
|
|
{
|
|
result = paInvalidChannelCount;
|
|
PA_DEBUG(("OpenStream ERROR3\n"));
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
|
|
// check that the device supports the requested sample rate
|
|
|
|
asioError = ASIOCanSampleRate( sampleRate );
|
|
PA_DEBUG(("ASIOCanSampleRate(%f):%d\n",sampleRate, asioError ));
|
|
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paInvalidSampleRate;
|
|
PA_DEBUG(("ERROR: ASIOCanSampleRate: %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
goto error;
|
|
}
|
|
|
|
|
|
// retrieve the current sample rate, we only change to the requested
|
|
// sample rate if the device is not already in that rate.
|
|
|
|
ASIOSampleRate oldRate;
|
|
asioError = ASIOGetSampleRate(&oldRate);
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paInvalidSampleRate;
|
|
PA_DEBUG(("ERROR: ASIOGetSampleRate: %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
goto error;
|
|
}
|
|
PA_DEBUG(("ASIOGetSampleRate:%f\n",oldRate));
|
|
|
|
if (oldRate != sampleRate){
|
|
|
|
PA_DEBUG(("before ASIOSetSampleRate(%f)\n",sampleRate));
|
|
asioError = ASIOSetSampleRate( sampleRate );
|
|
/* Set sample rate */
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paInvalidSampleRate;
|
|
PA_DEBUG(("ERROR: ASIOSetSampleRate: %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
goto error;
|
|
}
|
|
PA_DEBUG(("after ASIOSetSampleRate(%f)\n",sampleRate));
|
|
}
|
|
else
|
|
{
|
|
PA_DEBUG(("No Need to change SR\n"));
|
|
}
|
|
|
|
|
|
/*
|
|
IMPLEMENT ME:
|
|
- if a full duplex stream is requested, check that the combination
|
|
of input and output parameters is supported
|
|
*/
|
|
|
|
/* validate platform specific flags */
|
|
if( (streamFlags & paPlatformSpecificFlags) != 0 ){
|
|
PA_DEBUG(("OpenStream invalid flags!!\n"));
|
|
return paInvalidFlag; /* unexpected platform specific flag */
|
|
}
|
|
|
|
|
|
stream = (PaAsioStream*)PaUtil_AllocateMemory( sizeof(PaAsioStream) );
|
|
if( !stream )
|
|
{
|
|
result = paInsufficientMemory;
|
|
PA_DEBUG(("OpenStream ERROR5\n"));
|
|
goto error;
|
|
}
|
|
|
|
stream->completedBuffersPlayedEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
|
|
if( stream->completedBuffersPlayedEvent == NULL )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_SYSTEM_ERROR( GetLastError() );
|
|
PA_DEBUG(("OpenStream ERROR6\n"));
|
|
goto error;
|
|
}
|
|
completedBuffersPlayedEventInited = 1;
|
|
|
|
|
|
stream->asioBufferInfos = 0; /* for deallocation in error */
|
|
stream->asioChannelInfos = 0; /* for deallocation in error */
|
|
stream->bufferPtrs = 0; /* for deallocation in error */
|
|
|
|
if( streamCallback )
|
|
{
|
|
PaUtil_InitializeStreamRepresentation( &stream->streamRepresentation,
|
|
&asioHostApi->callbackStreamInterface, streamCallback, userData );
|
|
}
|
|
else
|
|
{
|
|
PaUtil_InitializeStreamRepresentation( &stream->streamRepresentation,
|
|
&asioHostApi->blockingStreamInterface, streamCallback, userData );
|
|
}
|
|
|
|
|
|
PaUtil_InitializeCpuLoadMeasurer( &stream->cpuLoadMeasurer, sampleRate );
|
|
|
|
|
|
stream->asioBufferInfos = (ASIOBufferInfo*)PaUtil_AllocateMemory(
|
|
sizeof(ASIOBufferInfo) * (inputChannelCount + outputChannelCount) );
|
|
if( !stream->asioBufferInfos )
|
|
{
|
|
result = paInsufficientMemory;
|
|
PA_DEBUG(("OpenStream ERROR7\n"));
|
|
goto error;
|
|
}
|
|
|
|
|
|
for( i=0; i < inputChannelCount; ++i )
|
|
{
|
|
ASIOBufferInfo *info = &stream->asioBufferInfos[i];
|
|
|
|
info->isInput = ASIOTrue;
|
|
|
|
if( inputChannelSelectors ){
|
|
// inputChannelSelectors values have already been validated in
|
|
// ValidateAsioSpecificStreamInfo() above
|
|
info->channelNum = inputChannelSelectors[i];
|
|
}else{
|
|
info->channelNum = i;
|
|
}
|
|
|
|
info->buffers[0] = info->buffers[1] = 0;
|
|
}
|
|
|
|
for( i=0; i < outputChannelCount; ++i ){
|
|
ASIOBufferInfo *info = &stream->asioBufferInfos[inputChannelCount+i];
|
|
|
|
info->isInput = ASIOFalse;
|
|
|
|
if( outputChannelSelectors ){
|
|
// outputChannelSelectors values have already been validated in
|
|
// ValidateAsioSpecificStreamInfo() above
|
|
info->channelNum = outputChannelSelectors[i];
|
|
}else{
|
|
info->channelNum = i;
|
|
}
|
|
|
|
info->buffers[0] = info->buffers[1] = 0;
|
|
}
|
|
|
|
|
|
framesPerHostBuffer = SelectHostBufferSize(
|
|
(( suggestedInputLatencyFrames > suggestedOutputLatencyFrames )
|
|
? suggestedInputLatencyFrames : suggestedOutputLatencyFrames),
|
|
driverInfo );
|
|
|
|
|
|
PA_DEBUG(("PaAsioOpenStream: framesPerHostBuffer :%d\n", framesPerHostBuffer));
|
|
|
|
asioError = ASIOCreateBuffers( stream->asioBufferInfos,
|
|
inputChannelCount+outputChannelCount,
|
|
framesPerHostBuffer, &asioCallbacks_ );
|
|
|
|
if( asioError != ASE_OK
|
|
&& framesPerHostBuffer != (unsigned long)driverInfo->bufferPreferredSize )
|
|
{
|
|
PA_DEBUG(("ERROR: ASIOCreateBuffers: %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
/*
|
|
Some buggy drivers (like the Hoontech DSP24) give incorrect
|
|
[min, preferred, max] values They should work with the preferred size
|
|
value, thus if Pa_ASIO_CreateBuffers fails with the hostBufferSize
|
|
computed in SelectHostBufferSize, we try again with the preferred size.
|
|
*/
|
|
|
|
framesPerHostBuffer = driverInfo->bufferPreferredSize;
|
|
|
|
PA_DEBUG(("PaAsioOpenStream: CORRECTED framesPerHostBuffer :%d\n", framesPerHostBuffer));
|
|
|
|
ASIOError asioError2 = ASIOCreateBuffers( stream->asioBufferInfos,
|
|
inputChannelCount+outputChannelCount,
|
|
framesPerHostBuffer, &asioCallbacks_ );
|
|
if( asioError2 == ASE_OK )
|
|
asioError = ASE_OK;
|
|
}
|
|
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
PA_DEBUG(("OpenStream ERROR9\n"));
|
|
goto error;
|
|
}
|
|
|
|
asioBuffersCreated = 1;
|
|
|
|
stream->asioChannelInfos = (ASIOChannelInfo*)PaUtil_AllocateMemory(
|
|
sizeof(ASIOChannelInfo) * (inputChannelCount + outputChannelCount) );
|
|
if( !stream->asioChannelInfos )
|
|
{
|
|
result = paInsufficientMemory;
|
|
PA_DEBUG(("OpenStream ERROR10\n"));
|
|
goto error;
|
|
}
|
|
|
|
for( i=0; i < inputChannelCount + outputChannelCount; ++i )
|
|
{
|
|
stream->asioChannelInfos[i].channel = stream->asioBufferInfos[i].channelNum;
|
|
stream->asioChannelInfos[i].isInput = stream->asioBufferInfos[i].isInput;
|
|
asioError = ASIOGetChannelInfo( &stream->asioChannelInfos[i] );
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
PA_DEBUG(("OpenStream ERROR11\n"));
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
stream->bufferPtrs = (void**)PaUtil_AllocateMemory(
|
|
2 * sizeof(void*) * (inputChannelCount + outputChannelCount) );
|
|
if( !stream->bufferPtrs )
|
|
{
|
|
result = paInsufficientMemory;
|
|
PA_DEBUG(("OpenStream ERROR12\n"));
|
|
goto error;
|
|
}
|
|
|
|
if( inputChannelCount > 0 )
|
|
{
|
|
stream->inputBufferPtrs[0] = stream-> bufferPtrs;
|
|
stream->inputBufferPtrs[1] = &stream->bufferPtrs[inputChannelCount];
|
|
|
|
for( i=0; i<inputChannelCount; ++i )
|
|
{
|
|
stream->inputBufferPtrs[0][i] = stream->asioBufferInfos[i].buffers[0];
|
|
stream->inputBufferPtrs[1][i] = stream->asioBufferInfos[i].buffers[1];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
stream->inputBufferPtrs[0] = 0;
|
|
stream->inputBufferPtrs[1] = 0;
|
|
}
|
|
|
|
if( outputChannelCount > 0 )
|
|
{
|
|
stream->outputBufferPtrs[0] = &stream->bufferPtrs[inputChannelCount*2];
|
|
stream->outputBufferPtrs[1] = &stream->bufferPtrs[inputChannelCount*2 + outputChannelCount];
|
|
|
|
for( i=0; i<outputChannelCount; ++i )
|
|
{
|
|
stream->outputBufferPtrs[0][i] = stream->asioBufferInfos[inputChannelCount+i].buffers[0];
|
|
stream->outputBufferPtrs[1][i] = stream->asioBufferInfos[inputChannelCount+i].buffers[1];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
stream->outputBufferPtrs[0] = 0;
|
|
stream->outputBufferPtrs[1] = 0;
|
|
}
|
|
|
|
if( inputChannelCount > 0 )
|
|
{
|
|
/* FIXME: assume all channels use the same type for now */
|
|
ASIOSampleType inputType = stream->asioChannelInfos[0].type;
|
|
|
|
PA_DEBUG(("ASIO Input type:%d",inputType));
|
|
AsioSampleTypeLOG(inputType);
|
|
hostInputSampleFormat = AsioSampleTypeToPaNativeSampleFormat( inputType );
|
|
|
|
SelectAsioToPaConverter( inputType, &stream->inputBufferConverter, &stream->inputShift );
|
|
}
|
|
else
|
|
{
|
|
hostInputSampleFormat = 0;
|
|
stream->inputBufferConverter = 0;
|
|
}
|
|
|
|
if( outputChannelCount > 0 )
|
|
{
|
|
/* FIXME: assume all channels use the same type for now */
|
|
ASIOSampleType outputType = stream->asioChannelInfos[inputChannelCount].type;
|
|
|
|
PA_DEBUG(("ASIO Output type:%d",outputType));
|
|
AsioSampleTypeLOG(outputType);
|
|
hostOutputSampleFormat = AsioSampleTypeToPaNativeSampleFormat( outputType );
|
|
|
|
SelectPaToAsioConverter( outputType, &stream->outputBufferConverter, &stream->outputShift );
|
|
}
|
|
else
|
|
{
|
|
hostOutputSampleFormat = 0;
|
|
stream->outputBufferConverter = 0;
|
|
}
|
|
|
|
result = PaUtil_InitializeBufferProcessor( &stream->bufferProcessor,
|
|
inputChannelCount, inputSampleFormat, hostInputSampleFormat,
|
|
outputChannelCount, outputSampleFormat, hostOutputSampleFormat,
|
|
sampleRate, streamFlags, framesPerBuffer,
|
|
framesPerHostBuffer, paUtilFixedHostBufferSize,
|
|
streamCallback, userData );
|
|
if( result != paNoError ){
|
|
PA_DEBUG(("OpenStream ERROR13\n"));
|
|
goto error;
|
|
}
|
|
|
|
|
|
ASIOGetLatencies( &stream->inputLatency, &stream->outputLatency );
|
|
|
|
stream->streamRepresentation.streamInfo.inputLatency =
|
|
(double)( PaUtil_GetBufferProcessorInputLatency(&stream->bufferProcessor)
|
|
+ stream->inputLatency) / sampleRate; // seconds
|
|
stream->streamRepresentation.streamInfo.outputLatency =
|
|
(double)( PaUtil_GetBufferProcessorOutputLatency(&stream->bufferProcessor)
|
|
+ stream->outputLatency) / sampleRate; // seconds
|
|
stream->streamRepresentation.streamInfo.sampleRate = sampleRate;
|
|
|
|
// the code below prints the ASIO latency which doesn't include the
|
|
// buffer processor latency. it reports the added latency separately
|
|
PA_DEBUG(("PaAsio : ASIO InputLatency = %ld (%ld ms), added buffProc:%ld (%ld ms)\n",
|
|
stream->inputLatency,
|
|
(long)((stream->inputLatency*1000)/ sampleRate),
|
|
PaUtil_GetBufferProcessorInputLatency(&stream->bufferProcessor),
|
|
(long)((PaUtil_GetBufferProcessorInputLatency(&stream->bufferProcessor)*1000)/ sampleRate)
|
|
));
|
|
|
|
PA_DEBUG(("PaAsio : ASIO OuputLatency = %ld (%ld ms), added buffProc:%ld (%ld ms)\n",
|
|
stream->outputLatency,
|
|
(long)((stream->outputLatency*1000)/ sampleRate),
|
|
PaUtil_GetBufferProcessorOutputLatency(&stream->bufferProcessor),
|
|
(long)((PaUtil_GetBufferProcessorOutputLatency(&stream->bufferProcessor)*1000)/ sampleRate)
|
|
));
|
|
|
|
stream->asioHostApi = asioHostApi;
|
|
stream->framesPerHostCallback = framesPerHostBuffer;
|
|
|
|
stream->inputChannelCount = inputChannelCount;
|
|
stream->outputChannelCount = outputChannelCount;
|
|
stream->postOutput = driverInfo->postOutput;
|
|
stream->isActive = 0;
|
|
|
|
asioHostApi->openAsioDeviceIndex = asioDeviceIndex;
|
|
|
|
*s = (PaStream*)stream;
|
|
|
|
return result;
|
|
|
|
error:
|
|
PA_DEBUG(("goto errored\n"));
|
|
if( stream )
|
|
{
|
|
if( completedBuffersPlayedEventInited )
|
|
CloseHandle( stream->completedBuffersPlayedEvent );
|
|
|
|
if( stream->asioBufferInfos )
|
|
PaUtil_FreeMemory( stream->asioBufferInfos );
|
|
|
|
if( stream->asioChannelInfos )
|
|
PaUtil_FreeMemory( stream->asioChannelInfos );
|
|
|
|
if( stream->bufferPtrs )
|
|
PaUtil_FreeMemory( stream->bufferPtrs );
|
|
|
|
PaUtil_FreeMemory( stream );
|
|
}
|
|
|
|
if( asioBuffersCreated )
|
|
ASIODisposeBuffers();
|
|
|
|
if( asioIsInitialized )
|
|
ASIOExit();
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
When CloseStream() is called, the multi-api layer ensures that
|
|
the stream has already been stopped or aborted.
|
|
*/
|
|
static PaError CloseStream( PaStream* s )
|
|
{
|
|
PaError result = paNoError;
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
/*
|
|
IMPLEMENT ME:
|
|
- additional stream closing + cleanup
|
|
*/
|
|
|
|
PaUtil_TerminateBufferProcessor( &stream->bufferProcessor );
|
|
PaUtil_TerminateStreamRepresentation( &stream->streamRepresentation );
|
|
|
|
stream->asioHostApi->openAsioDeviceIndex = paNoDevice;
|
|
|
|
CloseHandle( stream->completedBuffersPlayedEvent );
|
|
|
|
PaUtil_FreeMemory( stream->asioBufferInfos );
|
|
PaUtil_FreeMemory( stream->asioChannelInfos );
|
|
PaUtil_FreeMemory( stream->bufferPtrs );
|
|
PaUtil_FreeMemory( stream );
|
|
|
|
ASIODisposeBuffers();
|
|
ASIOExit();
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static void bufferSwitch(long index, ASIOBool directProcess)
|
|
{
|
|
//TAKEN FROM THE ASIO SDK
|
|
|
|
// the actual processing callback.
|
|
// Beware that this is normally in a seperate thread, hence be sure that
|
|
// you take care about thread synchronization. This is omitted here for
|
|
// simplicity.
|
|
|
|
// as this is a "back door" into the bufferSwitchTimeInfo a timeInfo needs
|
|
// to be created though it will only set the timeInfo.samplePosition and
|
|
// timeInfo.systemTime fields and the according flags
|
|
|
|
ASIOTime timeInfo;
|
|
memset( &timeInfo, 0, sizeof (timeInfo) );
|
|
|
|
// get the time stamp of the buffer, not necessary if no
|
|
// synchronization to other media is required
|
|
if( ASIOGetSamplePosition(&timeInfo.timeInfo.samplePosition, &timeInfo.timeInfo.systemTime) == ASE_OK)
|
|
timeInfo.timeInfo.flags = kSystemTimeValid | kSamplePositionValid;
|
|
|
|
// Call the real callback
|
|
bufferSwitchTimeInfo( &timeInfo, index, directProcess );
|
|
}
|
|
|
|
|
|
// conversion from 64 bit ASIOSample/ASIOTimeStamp to double float
|
|
#if NATIVE_INT64
|
|
#define ASIO64toDouble(a) (a)
|
|
#else
|
|
const double twoRaisedTo32 = 4294967296.;
|
|
#define ASIO64toDouble(a) ((a).lo + (a).hi * twoRaisedTo32)
|
|
#endif
|
|
|
|
static ASIOTime *bufferSwitchTimeInfo( ASIOTime *timeInfo, long index, ASIOBool directProcess )
|
|
{
|
|
// the actual processing callback.
|
|
// Beware that this is normally in a seperate thread, hence be sure that
|
|
// you take care about thread synchronization.
|
|
|
|
|
|
/* The SDK says the following about the directProcess flag:
|
|
suggests to the host whether it should immediately start processing
|
|
(directProcess == ASIOTrue), or whether its process should be deferred
|
|
because the call comes from a very low level (for instance, a high level
|
|
priority interrupt), and direct processing would cause timing instabilities for
|
|
the rest of the system. If in doubt, directProcess should be set to ASIOFalse.
|
|
|
|
We just ignore directProcess. This could cause incompatibilities with
|
|
drivers which really don't want the audio processing to occur in this
|
|
callback, but none have been identified yet.
|
|
*/
|
|
|
|
(void) directProcess; /* suppress unused parameter warning */
|
|
|
|
#if 0
|
|
// store the timeInfo for later use
|
|
asioDriverInfo.tInfo = *timeInfo;
|
|
|
|
// get the time stamp of the buffer, not necessary if no
|
|
// synchronization to other media is required
|
|
|
|
if (timeInfo->timeInfo.flags & kSystemTimeValid)
|
|
asioDriverInfo.nanoSeconds = ASIO64toDouble(timeInfo->timeInfo.systemTime);
|
|
else
|
|
asioDriverInfo.nanoSeconds = 0;
|
|
|
|
if (timeInfo->timeInfo.flags & kSamplePositionValid)
|
|
asioDriverInfo.samples = ASIO64toDouble(timeInfo->timeInfo.samplePosition);
|
|
else
|
|
asioDriverInfo.samples = 0;
|
|
|
|
if (timeInfo->timeCode.flags & kTcValid)
|
|
asioDriverInfo.tcSamples = ASIO64toDouble(timeInfo->timeCode.timeCodeSamples);
|
|
else
|
|
asioDriverInfo.tcSamples = 0;
|
|
|
|
// get the system reference time
|
|
asioDriverInfo.sysRefTime = get_sys_reference_time();
|
|
#endif
|
|
|
|
#if 0
|
|
// a few debug messages for the Windows device driver developer
|
|
// tells you the time when driver got its interrupt and the delay until the app receives
|
|
// the event notification.
|
|
static double last_samples = 0;
|
|
char tmp[128];
|
|
sprintf (tmp, "diff: %d / %d ms / %d ms / %d samples \n", asioDriverInfo.sysRefTime - (long)(asioDriverInfo.nanoSeconds / 1000000.0), asioDriverInfo.sysRefTime, (long)(asioDriverInfo.nanoSeconds / 1000000.0), (long)(asioDriverInfo.samples - last_samples));
|
|
OutputDebugString (tmp);
|
|
last_samples = asioDriverInfo.samples;
|
|
#endif
|
|
|
|
|
|
if( !theAsioStream )
|
|
return 0L;
|
|
|
|
// Keep sample position
|
|
// FIXME: asioDriverInfo.pahsc_NumFramesDone = timeInfo->timeInfo.samplePosition.lo;
|
|
|
|
|
|
// protect against reentrancy
|
|
if( PaAsio_AtomicIncrement(&theAsioStream->reenterCount) )
|
|
{
|
|
theAsioStream->reenterError++;
|
|
//DBUG(("bufferSwitchTimeInfo : reentrancy detection = %d\n", asioDriverInfo.reenterError));
|
|
return 0L;
|
|
}
|
|
|
|
int buffersDone = 0;
|
|
|
|
do
|
|
{
|
|
if( buffersDone > 0 )
|
|
{
|
|
// this is a reentered buffer, we missed processing it on time
|
|
// set the input overflow and output underflow flags as appropriate
|
|
|
|
if( theAsioStream->inputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paInputOverflow;
|
|
|
|
if( theAsioStream->outputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paOutputUnderflow;
|
|
}
|
|
else
|
|
{
|
|
if( theAsioStream->zeroOutput )
|
|
{
|
|
ZeroOutputBuffers( theAsioStream, index );
|
|
|
|
// Finally if the driver supports the ASIOOutputReady() optimization,
|
|
// do it here, all data are in place
|
|
if( theAsioStream->postOutput )
|
|
ASIOOutputReady();
|
|
|
|
if( theAsioStream->stopProcessing )
|
|
{
|
|
if( theAsioStream->stopPlayoutCount < 2 )
|
|
{
|
|
++theAsioStream->stopPlayoutCount;
|
|
if( theAsioStream->stopPlayoutCount == 2 )
|
|
{
|
|
theAsioStream->isActive = 0;
|
|
if( theAsioStream->streamRepresentation.streamFinishedCallback != 0 )
|
|
theAsioStream->streamRepresentation.streamFinishedCallback( theAsioStream->streamRepresentation.userData );
|
|
theAsioStream->streamFinishedCallbackCalled = true;
|
|
SetEvent( theAsioStream->completedBuffersPlayedEvent );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
#if 0
|
|
// test code to try to detect slip conditions... these may work on some systems
|
|
// but neither of them work on the RME Digi96
|
|
|
|
// check that sample delta matches buffer size (otherwise we must have skipped
|
|
// a buffer.
|
|
static double last_samples = -512;
|
|
double samples;
|
|
//if( timeInfo->timeCode.flags & kTcValid )
|
|
// samples = ASIO64toDouble(timeInfo->timeCode.timeCodeSamples);
|
|
//else
|
|
samples = ASIO64toDouble(timeInfo->timeInfo.samplePosition);
|
|
int delta = samples - last_samples;
|
|
//printf( "%d\n", delta);
|
|
last_samples = samples;
|
|
|
|
if( delta > theAsioStream->framesPerHostCallback )
|
|
{
|
|
if( theAsioStream->inputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paInputOverflow;
|
|
|
|
if( theAsioStream->outputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paOutputUnderflow;
|
|
}
|
|
|
|
// check that the buffer index is not the previous index (which would indicate
|
|
// that a buffer was skipped.
|
|
static int previousIndex = 1;
|
|
if( index == previousIndex )
|
|
{
|
|
if( theAsioStream->inputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paInputOverflow;
|
|
|
|
if( theAsioStream->outputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paOutputUnderflow;
|
|
}
|
|
previousIndex = index;
|
|
#endif
|
|
|
|
int i;
|
|
|
|
PaUtil_BeginCpuLoadMeasurement( &theAsioStream->cpuLoadMeasurer );
|
|
|
|
PaStreamCallbackTimeInfo paTimeInfo;
|
|
|
|
// asio systemTime is supposed to be measured according to the same
|
|
// clock as timeGetTime
|
|
paTimeInfo.currentTime = (ASIO64toDouble( timeInfo->timeInfo.systemTime ) * .000000001);
|
|
|
|
/* patch from Paul Boege */
|
|
paTimeInfo.inputBufferAdcTime = paTimeInfo.currentTime -
|
|
((double)theAsioStream->inputLatency/theAsioStream->streamRepresentation.streamInfo.sampleRate);
|
|
|
|
paTimeInfo.outputBufferDacTime = paTimeInfo.currentTime +
|
|
((double)theAsioStream->outputLatency/theAsioStream->streamRepresentation.streamInfo.sampleRate);
|
|
|
|
/* old version is buggy because the buffer processor also adds in its latency to the time parameters
|
|
paTimeInfo.inputBufferAdcTime = paTimeInfo.currentTime - theAsioStream->streamRepresentation.streamInfo.inputLatency;
|
|
paTimeInfo.outputBufferDacTime = paTimeInfo.currentTime + theAsioStream->streamRepresentation.streamInfo.outputLatency;
|
|
*/
|
|
#if 1
|
|
// detect underflows by checking inter-callback time > 2 buffer period
|
|
static double previousTime = -1;
|
|
if( previousTime > 0 ){
|
|
|
|
double delta = paTimeInfo.currentTime - previousTime;
|
|
|
|
if( delta >= 2. * (theAsioStream->framesPerHostCallback / theAsioStream->streamRepresentation.streamInfo.sampleRate) ){
|
|
if( theAsioStream->inputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paInputOverflow;
|
|
|
|
if( theAsioStream->outputChannelCount > 0 )
|
|
theAsioStream->callbackFlags |= paOutputUnderflow;
|
|
}
|
|
}
|
|
previousTime = paTimeInfo.currentTime;
|
|
#endif
|
|
|
|
// note that the above input and output times do not need to be
|
|
// adjusted for the latency of the buffer processor -- the buffer
|
|
// processor handles that.
|
|
|
|
if( theAsioStream->inputBufferConverter )
|
|
{
|
|
for( i=0; i<theAsioStream->inputChannelCount; i++ )
|
|
{
|
|
theAsioStream->inputBufferConverter( theAsioStream->inputBufferPtrs[index][i],
|
|
theAsioStream->inputShift, theAsioStream->framesPerHostCallback );
|
|
}
|
|
}
|
|
|
|
PaUtil_BeginBufferProcessing( &theAsioStream->bufferProcessor, &paTimeInfo, theAsioStream->callbackFlags );
|
|
|
|
/* reset status flags once they've been passed to the callback */
|
|
theAsioStream->callbackFlags = 0;
|
|
|
|
PaUtil_SetInputFrameCount( &theAsioStream->bufferProcessor, 0 /* default to host buffer size */ );
|
|
for( i=0; i<theAsioStream->inputChannelCount; ++i )
|
|
PaUtil_SetNonInterleavedInputChannel( &theAsioStream->bufferProcessor, i, theAsioStream->inputBufferPtrs[index][i] );
|
|
|
|
PaUtil_SetOutputFrameCount( &theAsioStream->bufferProcessor, 0 /* default to host buffer size */ );
|
|
for( i=0; i<theAsioStream->outputChannelCount; ++i )
|
|
PaUtil_SetNonInterleavedOutputChannel( &theAsioStream->bufferProcessor, i, theAsioStream->outputBufferPtrs[index][i] );
|
|
|
|
int callbackResult;
|
|
if( theAsioStream->stopProcessing )
|
|
callbackResult = paComplete;
|
|
else
|
|
callbackResult = paContinue;
|
|
unsigned long framesProcessed = PaUtil_EndBufferProcessing( &theAsioStream->bufferProcessor, &callbackResult );
|
|
|
|
if( theAsioStream->outputBufferConverter )
|
|
{
|
|
for( i=0; i<theAsioStream->outputChannelCount; i++ )
|
|
{
|
|
theAsioStream->outputBufferConverter( theAsioStream->outputBufferPtrs[index][i],
|
|
theAsioStream->outputShift, theAsioStream->framesPerHostCallback );
|
|
}
|
|
}
|
|
|
|
PaUtil_EndCpuLoadMeasurement( &theAsioStream->cpuLoadMeasurer, framesProcessed );
|
|
|
|
// Finally if the driver supports the ASIOOutputReady() optimization,
|
|
// do it here, all data are in place
|
|
if( theAsioStream->postOutput )
|
|
ASIOOutputReady();
|
|
|
|
if( callbackResult == paContinue )
|
|
{
|
|
/* nothing special to do */
|
|
}
|
|
else if( callbackResult == paAbort )
|
|
{
|
|
/* finish playback immediately */
|
|
theAsioStream->isActive = 0;
|
|
if( theAsioStream->streamRepresentation.streamFinishedCallback != 0 )
|
|
theAsioStream->streamRepresentation.streamFinishedCallback( theAsioStream->streamRepresentation.userData );
|
|
theAsioStream->streamFinishedCallbackCalled = true;
|
|
SetEvent( theAsioStream->completedBuffersPlayedEvent );
|
|
theAsioStream->zeroOutput = true;
|
|
}
|
|
else /* paComplete or other non-zero value indicating complete */
|
|
{
|
|
/* Finish playback once currently queued audio has completed. */
|
|
theAsioStream->stopProcessing = true;
|
|
|
|
if( PaUtil_IsBufferProcessorOutputEmpty( &theAsioStream->bufferProcessor ) )
|
|
{
|
|
theAsioStream->zeroOutput = true;
|
|
theAsioStream->stopPlayoutCount = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
++buffersDone;
|
|
}while( PaAsio_AtomicDecrement(&theAsioStream->reenterCount) >= 0 );
|
|
|
|
return 0L;
|
|
}
|
|
|
|
|
|
static void sampleRateChanged(ASIOSampleRate sRate)
|
|
{
|
|
// TAKEN FROM THE ASIO SDK
|
|
// do whatever you need to do if the sample rate changed
|
|
// usually this only happens during external sync.
|
|
// Audio processing is not stopped by the driver, actual sample rate
|
|
// might not have even changed, maybe only the sample rate status of an
|
|
// AES/EBU or S/PDIF digital input at the audio device.
|
|
// You might have to update time/sample related conversion routines, etc.
|
|
|
|
(void) sRate; /* unused parameter */
|
|
PA_DEBUG( ("sampleRateChanged : %d \n", sRate));
|
|
}
|
|
|
|
static long asioMessages(long selector, long value, void* message, double* opt)
|
|
{
|
|
// TAKEN FROM THE ASIO SDK
|
|
// currently the parameters "value", "message" and "opt" are not used.
|
|
long ret = 0;
|
|
|
|
(void) message; /* unused parameters */
|
|
(void) opt;
|
|
|
|
PA_DEBUG( ("asioMessages : %d , %d \n", selector, value));
|
|
|
|
switch(selector)
|
|
{
|
|
case kAsioSelectorSupported:
|
|
if(value == kAsioResetRequest
|
|
|| value == kAsioEngineVersion
|
|
|| value == kAsioResyncRequest
|
|
|| value == kAsioLatenciesChanged
|
|
// the following three were added for ASIO 2.0, you don't necessarily have to support them
|
|
|| value == kAsioSupportsTimeInfo
|
|
|| value == kAsioSupportsTimeCode
|
|
|| value == kAsioSupportsInputMonitor)
|
|
ret = 1L;
|
|
break;
|
|
|
|
case kAsioBufferSizeChange:
|
|
//printf("kAsioBufferSizeChange \n");
|
|
break;
|
|
|
|
case kAsioResetRequest:
|
|
// defer the task and perform the reset of the driver during the next "safe" situation
|
|
// You cannot reset the driver right now, as this code is called from the driver.
|
|
// Reset the driver is done by completely destruct is. I.e. ASIOStop(), ASIODisposeBuffers(), Destruction
|
|
// Afterwards you initialize the driver again.
|
|
|
|
/*FIXME: commented the next line out */
|
|
//asioDriverInfo.stopped; // In this sample the processing will just stop
|
|
ret = 1L;
|
|
break;
|
|
|
|
case kAsioResyncRequest:
|
|
// This informs the application, that the driver encountered some non fatal data loss.
|
|
// It is used for synchronization purposes of different media.
|
|
// Added mainly to work around the Win16Mutex problems in Windows 95/98 with the
|
|
// Windows Multimedia system, which could loose data because the Mutex was hold too long
|
|
// by another thread.
|
|
// However a driver can issue it in other situations, too.
|
|
ret = 1L;
|
|
break;
|
|
|
|
case kAsioLatenciesChanged:
|
|
// This will inform the host application that the drivers were latencies changed.
|
|
// Beware, it this does not mean that the buffer sizes have changed!
|
|
// You might need to update internal delay data.
|
|
ret = 1L;
|
|
//printf("kAsioLatenciesChanged \n");
|
|
break;
|
|
|
|
case kAsioEngineVersion:
|
|
// return the supported ASIO version of the host application
|
|
// If a host applications does not implement this selector, ASIO 1.0 is assumed
|
|
// by the driver
|
|
ret = 2L;
|
|
break;
|
|
|
|
case kAsioSupportsTimeInfo:
|
|
// informs the driver wether the asioCallbacks.bufferSwitchTimeInfo() callback
|
|
// is supported.
|
|
// For compatibility with ASIO 1.0 drivers the host application should always support
|
|
// the "old" bufferSwitch method, too.
|
|
ret = 1;
|
|
break;
|
|
|
|
case kAsioSupportsTimeCode:
|
|
// informs the driver wether application is interested in time code info.
|
|
// If an application does not need to know about time code, the driver has less work
|
|
// to do.
|
|
ret = 0;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
static PaError StartStream( PaStream *s )
|
|
{
|
|
PaError result = paNoError;
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
ASIOError asioError;
|
|
|
|
if( stream->outputChannelCount > 0 )
|
|
{
|
|
ZeroOutputBuffers( stream, 0 );
|
|
ZeroOutputBuffers( stream, 1 );
|
|
}
|
|
|
|
PaUtil_ResetBufferProcessor( &stream->bufferProcessor );
|
|
stream->stopProcessing = false;
|
|
stream->zeroOutput = false;
|
|
|
|
/* Reentrancy counter initialisation */
|
|
stream->reenterCount = -1;
|
|
stream->reenterError = 0;
|
|
|
|
stream->callbackFlags = 0;
|
|
|
|
if( ResetEvent( stream->completedBuffersPlayedEvent ) == 0 )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_SYSTEM_ERROR( GetLastError() );
|
|
}
|
|
|
|
if( result == paNoError )
|
|
{
|
|
theAsioStream = stream;
|
|
asioError = ASIOStart();
|
|
if( asioError == ASE_OK )
|
|
{
|
|
stream->isActive = 1;
|
|
stream->streamFinishedCallbackCalled = false;
|
|
}
|
|
else
|
|
{
|
|
theAsioStream = 0;
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static PaError StopStream( PaStream *s )
|
|
{
|
|
PaError result = paNoError;
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
ASIOError asioError;
|
|
|
|
if( stream->isActive )
|
|
{
|
|
stream->stopProcessing = true;
|
|
|
|
/* wait for the stream to finish playing out enqueued buffers.
|
|
timeout after four times the stream latency.
|
|
|
|
@todo should use a better time out value - if the user buffer
|
|
length is longer than the asio buffer size then that should
|
|
be taken into account.
|
|
*/
|
|
if( WaitForSingleObject( theAsioStream->completedBuffersPlayedEvent,
|
|
(DWORD)(stream->streamRepresentation.streamInfo.outputLatency * 1000. * 4.) )
|
|
== WAIT_TIMEOUT )
|
|
{
|
|
PA_DEBUG(("WaitForSingleObject() timed out in StopStream()\n" ));
|
|
}
|
|
}
|
|
|
|
asioError = ASIOStop();
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
}
|
|
|
|
theAsioStream = 0;
|
|
stream->isActive = 0;
|
|
|
|
if( !stream->streamFinishedCallbackCalled )
|
|
{
|
|
if( stream->streamRepresentation.streamFinishedCallback != 0 )
|
|
stream->streamRepresentation.streamFinishedCallback( stream->streamRepresentation.userData );
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static PaError AbortStream( PaStream *s )
|
|
{
|
|
PaError result = paNoError;
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
ASIOError asioError;
|
|
|
|
stream->zeroOutput = true;
|
|
|
|
asioError = ASIOStop();
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
}
|
|
else
|
|
{
|
|
// make sure that the callback is not still in-flight when ASIOStop()
|
|
// returns. This has been observed to happen on the Hoontech DSP24 for
|
|
// example.
|
|
int count = 2000; // only wait for 2 seconds, rather than hanging.
|
|
while( theAsioStream->reenterCount != -1 && count > 0 )
|
|
{
|
|
Sleep(1);
|
|
--count;
|
|
}
|
|
}
|
|
|
|
/* it is questionable whether we should zero theAsioStream if ASIOStop()
|
|
returns an error, because the callback could still be active. We assume
|
|
not - this is based on the fact that ASIOStop is unlikely to fail
|
|
if the callback is running - it's more likely to fail because the
|
|
callback is not running. */
|
|
|
|
theAsioStream = 0;
|
|
stream->isActive = 0;
|
|
|
|
if( !stream->streamFinishedCallbackCalled )
|
|
{
|
|
if( stream->streamRepresentation.streamFinishedCallback != 0 )
|
|
stream->streamRepresentation.streamFinishedCallback( stream->streamRepresentation.userData );
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static PaError IsStreamStopped( PaStream *s )
|
|
{
|
|
//PaAsioStream *stream = (PaAsioStream*)s;
|
|
(void) s; /* unused parameter */
|
|
return theAsioStream == 0;
|
|
}
|
|
|
|
|
|
static PaError IsStreamActive( PaStream *s )
|
|
{
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
return stream->isActive;
|
|
}
|
|
|
|
|
|
static PaTime GetStreamTime( PaStream *s )
|
|
{
|
|
(void) s; /* unused parameter */
|
|
return (double)timeGetTime() * .001;
|
|
}
|
|
|
|
|
|
static double GetStreamCpuLoad( PaStream* s )
|
|
{
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
return PaUtil_GetCpuLoad( &stream->cpuLoadMeasurer );
|
|
}
|
|
|
|
|
|
/*
|
|
As separate stream interfaces are used for blocking and callback
|
|
streams, the following functions can be guaranteed to only be called
|
|
for blocking streams.
|
|
*/
|
|
|
|
static PaError ReadStream( PaStream* s,
|
|
void *buffer,
|
|
unsigned long frames )
|
|
{
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
/* IMPLEMENT ME, see portaudio.h for required behavior*/
|
|
(void) stream; /* unused parameters */
|
|
(void) buffer;
|
|
(void) frames;
|
|
|
|
return paNoError;
|
|
}
|
|
|
|
|
|
static PaError WriteStream( PaStream* s,
|
|
const void *buffer,
|
|
unsigned long frames )
|
|
{
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
/* IMPLEMENT ME, see portaudio.h for required behavior*/
|
|
(void) stream; /* unused parameters */
|
|
(void) buffer;
|
|
(void) frames;
|
|
|
|
return paNoError;
|
|
}
|
|
|
|
|
|
static signed long GetStreamReadAvailable( PaStream* s )
|
|
{
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
/* IMPLEMENT ME, see portaudio.h for required behavior*/
|
|
(void) stream; /* unused parameter */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static signed long GetStreamWriteAvailable( PaStream* s )
|
|
{
|
|
PaAsioStream *stream = (PaAsioStream*)s;
|
|
|
|
/* IMPLEMENT ME, see portaudio.h for required behavior*/
|
|
(void) stream; /* unused parameter */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
PaError PaAsio_ShowControlPanel( PaDeviceIndex device, void* systemSpecific )
|
|
{
|
|
PaError result = paNoError;
|
|
PaUtilHostApiRepresentation *hostApi;
|
|
PaDeviceIndex hostApiDevice;
|
|
ASIODriverInfo asioDriverInfo;
|
|
ASIOError asioError;
|
|
int asioIsInitialized = 0;
|
|
PaAsioHostApiRepresentation *asioHostApi;
|
|
PaAsioDeviceInfo *asioDeviceInfo;
|
|
|
|
|
|
result = PaUtil_GetHostApiRepresentation( &hostApi, paASIO );
|
|
if( result != paNoError )
|
|
goto error;
|
|
|
|
result = PaUtil_DeviceIndexToHostApiDeviceIndex( &hostApiDevice, device, hostApi );
|
|
if( result != paNoError )
|
|
goto error;
|
|
|
|
/*
|
|
In theory we could proceed if the currently open device was the same
|
|
one for which the control panel was requested, however because the
|
|
window pointer is not available until this function is called we
|
|
currently need to call ASIOInit() again here, which of course can't be
|
|
done safely while a stream is open.
|
|
*/
|
|
|
|
asioHostApi = (PaAsioHostApiRepresentation*)hostApi;
|
|
if( asioHostApi->openAsioDeviceIndex != paNoDevice )
|
|
{
|
|
result = paDeviceUnavailable;
|
|
goto error;
|
|
}
|
|
|
|
asioDeviceInfo = (PaAsioDeviceInfo*)hostApi->deviceInfos[hostApiDevice];
|
|
|
|
if( !loadAsioDriver( const_cast<char*>(asioDeviceInfo->commonDeviceInfo.name) ) )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
goto error;
|
|
}
|
|
|
|
/* CRUCIAL!!! */
|
|
memset( &asioDriverInfo, 0, sizeof(ASIODriverInfo) );
|
|
asioDriverInfo.asioVersion = 2;
|
|
asioDriverInfo.sysRef = systemSpecific;
|
|
asioError = ASIOInit( &asioDriverInfo );
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
else
|
|
{
|
|
asioIsInitialized = 1;
|
|
}
|
|
|
|
PA_DEBUG(("PaAsio_ShowControlPanel: ASIOInit(): %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
PA_DEBUG(("asioVersion: ASIOInit(): %ld\n", asioDriverInfo.asioVersion ));
|
|
PA_DEBUG(("driverVersion: ASIOInit(): %ld\n", asioDriverInfo.driverVersion ));
|
|
PA_DEBUG(("Name: ASIOInit(): %s\n", asioDriverInfo.name ));
|
|
PA_DEBUG(("ErrorMessage: ASIOInit(): %s\n", asioDriverInfo.errorMessage ));
|
|
|
|
asioError = ASIOControlPanel();
|
|
if( asioError != ASE_OK )
|
|
{
|
|
PA_DEBUG(("PaAsio_ShowControlPanel: ASIOControlPanel(): %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
goto error;
|
|
}
|
|
|
|
PA_DEBUG(("PaAsio_ShowControlPanel: ASIOControlPanel(): %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
|
|
asioError = ASIOExit();
|
|
if( asioError != ASE_OK )
|
|
{
|
|
result = paUnanticipatedHostError;
|
|
PA_ASIO_SET_LAST_ASIO_ERROR( asioError );
|
|
asioIsInitialized = 0;
|
|
goto error;
|
|
}
|
|
|
|
PA_DEBUG(("PaAsio_ShowControlPanel: ASIOExit(): %s\n", PaAsio_GetAsioErrorText(asioError) ));
|
|
|
|
return result;
|
|
|
|
error:
|
|
if( asioIsInitialized )
|
|
ASIOExit();
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
PaError PaAsio_GetInputChannelName( PaDeviceIndex device, int channelIndex,
|
|
const char** channelName )
|
|
{
|
|
PaError result = paNoError;
|
|
PaUtilHostApiRepresentation *hostApi;
|
|
PaDeviceIndex hostApiDevice;
|
|
PaAsioDeviceInfo *asioDeviceInfo;
|
|
|
|
|
|
result = PaUtil_GetHostApiRepresentation( &hostApi, paASIO );
|
|
if( result != paNoError )
|
|
goto error;
|
|
|
|
result = PaUtil_DeviceIndexToHostApiDeviceIndex( &hostApiDevice, device, hostApi );
|
|
if( result != paNoError )
|
|
goto error;
|
|
|
|
asioDeviceInfo = (PaAsioDeviceInfo*)hostApi->deviceInfos[hostApiDevice];
|
|
|
|
if( channelIndex < 0 || channelIndex >= asioDeviceInfo->commonDeviceInfo.maxInputChannels ){
|
|
result = paInvalidChannelCount;
|
|
goto error;
|
|
}
|
|
|
|
*channelName = asioDeviceInfo->asioChannelInfos[channelIndex].name;
|
|
|
|
return paNoError;
|
|
|
|
error:
|
|
return result;
|
|
}
|
|
|
|
|
|
PaError PaAsio_GetOutputChannelName( PaDeviceIndex device, int channelIndex,
|
|
const char** channelName )
|
|
{
|
|
PaError result = paNoError;
|
|
PaUtilHostApiRepresentation *hostApi;
|
|
PaDeviceIndex hostApiDevice;
|
|
PaAsioDeviceInfo *asioDeviceInfo;
|
|
|
|
|
|
result = PaUtil_GetHostApiRepresentation( &hostApi, paASIO );
|
|
if( result != paNoError )
|
|
goto error;
|
|
|
|
result = PaUtil_DeviceIndexToHostApiDeviceIndex( &hostApiDevice, device, hostApi );
|
|
if( result != paNoError )
|
|
goto error;
|
|
|
|
asioDeviceInfo = (PaAsioDeviceInfo*)hostApi->deviceInfos[hostApiDevice];
|
|
|
|
if( channelIndex < 0 || channelIndex >= asioDeviceInfo->commonDeviceInfo.maxOutputChannels ){
|
|
result = paInvalidChannelCount;
|
|
goto error;
|
|
}
|
|
|
|
*channelName = asioDeviceInfo->asioChannelInfos[
|
|
asioDeviceInfo->commonDeviceInfo.maxInputChannels + channelIndex].name;
|
|
|
|
return paNoError;
|
|
|
|
error:
|
|
return result;
|
|
}
|