mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-23 12:48:40 -05:00
d8934b4f71
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@247 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
71 lines
2.9 KiB
C
71 lines
2.9 KiB
C
/*
|
|
* Mac spcific flags for PA.
|
|
* portaudio.h should be included before this file.
|
|
*/
|
|
|
|
/*
|
|
* A pointer to a paMacCoreStreamInfo may be passed as
|
|
* the hostApiSpecificStreamInfo in the PaStreamParameters struct
|
|
* when opening a stream or querying the format. Use NULL, for the
|
|
* defaults. Note that for duplex streams, both infos should be the
|
|
* same or behaviour is undefined.
|
|
*/
|
|
typedef struct paMacCoreStreamInfo
|
|
{
|
|
unsigned long size; /**size of whole structure including this header */
|
|
PaHostApiTypeId hostApiType;/**host API for which this data is intended */
|
|
unsigned long version; /**structure version */
|
|
unsigned long flags; /* flags to modify behaviour */
|
|
} paMacCoreStreamInfo;
|
|
|
|
/* Use this function to initialize a paMacCoreStreamInfo struct
|
|
using the requested flags. */
|
|
void paSetupMacCoreStreamInfo( paMacCoreStreamInfo *data, unsigned long flags )
|
|
{
|
|
bzero( data, sizeof( paMacCoreStreamInfo ) );
|
|
data->size = sizeof( paMacCoreStreamInfo );
|
|
data->hostApiType = paCoreAudio;
|
|
data->version = 0x01;
|
|
data->flags = flags;
|
|
}
|
|
|
|
/*
|
|
* The following flags alter the behaviour of PA on the mac platform.
|
|
* they can be ORed together. These should work both for opening and
|
|
* checking a device.
|
|
*/
|
|
/* Allows PortAudio to change things like the device's frame size,
|
|
* which allows for much lower latency, but might disrupt the device
|
|
* if other programs are using it, even when you are just Querying
|
|
* the device. */
|
|
const unsigned long paMacCore_ChangeDeviceParameters = 0x01;
|
|
|
|
/* In combination with the above flag,
|
|
* causes the stream opening to fail, unless the exact sample rates
|
|
* are supported by the device. */
|
|
const unsigned long paMacCore_FailIfConversionRequired = 0x02;
|
|
|
|
/* These flags set the SR conversion quality, if required. The wierd ordering
|
|
* allows Maximum Quality to be the default.*/
|
|
const unsigned long paMacCore_ConversionQualityMin = 0x0100;
|
|
const unsigned long paMacCore_ConversionQualityMedium = 0x0200;
|
|
const unsigned long paMacCore_ConversionQualityLow = 0x0300;
|
|
const unsigned long paMacCore_ConversionQualityHigh = 0x0400;
|
|
const unsigned long paMacCore_ConversionQualityMax = 0x0000;
|
|
|
|
/*
|
|
* Here are some "preset" combinations of flags (above) to get to some
|
|
* common configurations. THIS IS OVERKILL, but if more flags are added
|
|
* it won't be.
|
|
*/
|
|
/*This is the default setting: do as much sample rate conversion as possible
|
|
* and as little mucking with the device as possible. */
|
|
const unsigned long paMacCorePlayNice = 0x00;
|
|
/*This setting is tuned for pro audio apps. It allows SR conversion on input
|
|
and output, but it tries to set the appropriate SR on the device.*/
|
|
const unsigned long paMacCorePro = 0x01;
|
|
/*This is a setting to minimize CPU usage and still play nice.*/
|
|
const unsigned long paMacCoreMinimizeCPUButPlayNice = 0x0100;
|
|
/*This is a setting to minimize CPU usage, even if that means interrupting the device. */
|
|
const unsigned long paMacCoreMinimizeCPU = 0x0101;
|