Adds hotplug to portaudio wmme host api, also fixes a NPE that can prevent
device change updates. damencho committed on Nov 6, 2012 5ca6fed from https://github.com/jitsi/libsrc/commits/master/portaudio.zip
This commit is contained in:
Ross Bencina
parent
0a7b80cfce
commit
15d77417bf
1 changed files with 313 additions and 153 deletions
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@ -245,6 +245,9 @@ static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
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const PaStreamParameters *inputParameters,
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const PaStreamParameters *inputParameters,
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const PaStreamParameters *outputParameters,
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const PaStreamParameters *outputParameters,
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double sampleRate );
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double sampleRate );
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static PaError ScanDeviceInfos( struct PaUtilHostApiRepresentation *hostApi, PaHostApiIndex index, void **newDeviceInfos, int *newDeviceCount );
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static PaError CommitDeviceInfos( struct PaUtilHostApiRepresentation *hostApi, PaHostApiIndex index, void *deviceInfos, int deviceCount );
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static PaError DisposeDeviceInfos( struct PaUtilHostApiRepresentation *hostApi, void *deviceInfos, int deviceCount );
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static PaError CloseStream( PaStream* stream );
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static PaError CloseStream( PaStream* stream );
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static PaError StartStream( PaStream *stream );
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static PaError StartStream( PaStream *stream );
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static PaError StopStream( PaStream *stream );
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static PaError StopStream( PaStream *stream );
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@ -399,6 +402,8 @@ typedef struct
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device ids.
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device ids.
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*/
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*/
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UINT *winMmeDeviceIds;
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UINT *winMmeDeviceIds;
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//char comWasInitialized;
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}
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}
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PaWinMmeHostApiRepresentation;
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PaWinMmeHostApiRepresentation;
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@ -412,6 +417,14 @@ typedef struct
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}
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}
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PaWinMmeDeviceInfo;
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PaWinMmeDeviceInfo;
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typedef struct PaWinMmeScanDeviceInfosResults{ /* used for tranferring device infos during scanning / rescanning */
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PaDeviceInfo **deviceInfos;
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PaDeviceIndex defaultInputDevice;
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PaDeviceIndex defaultOutputDevice;
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int inputDeviceCount, outputDeviceCount;
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} PaWinMmeScanDeviceInfosResults;
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/*************************************************************************
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/*************************************************************************
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* Returns recommended device ID.
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* Returns recommended device ID.
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@ -993,14 +1006,10 @@ static void GetDefaultLatencies( PaTime *defaultLowLatency, PaTime *defaultHighL
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PaError PaWinMme_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
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PaError PaWinMme_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
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{
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{
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PaError result = paNoError;
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PaError result = paNoError;
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int i;
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int deviceCount;
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PaWinMmeHostApiRepresentation *winMmeHostApi;
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PaWinMmeHostApiRepresentation *winMmeHostApi;
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int inputDeviceCount, outputDeviceCount, maximumPossibleDeviceCount;
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//char comWasInitialized = 1;
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PaWinMmeDeviceInfo *deviceInfoArray;
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void *scanResults = 0;
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int deviceInfoInitializationSucceeded;
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PaTime defaultLowLatency, defaultHighLatency;
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DWORD waveInPreferredDevice, waveOutPreferredDevice;
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DWORD preferredDeviceStatusFlags;
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winMmeHostApi = (PaWinMmeHostApiRepresentation*)PaUtil_AllocateMemory( sizeof(PaWinMmeHostApiRepresentation) );
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winMmeHostApi = (PaWinMmeHostApiRepresentation*)PaUtil_AllocateMemory( sizeof(PaWinMmeHostApiRepresentation) );
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if( !winMmeHostApi )
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if( !winMmeHostApi )
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@ -1009,6 +1018,8 @@ PaError PaWinMme_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiInd
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goto error;
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goto error;
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}
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}
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//winMmeHostApi->comWasInitialized = comWasInitialized;
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winMmeHostApi->allocations = PaUtil_CreateAllocationGroup();
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winMmeHostApi->allocations = PaUtil_CreateAllocationGroup();
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if( !winMmeHostApi->allocations )
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if( !winMmeHostApi->allocations )
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{
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{
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@ -1025,162 +1036,28 @@ PaError PaWinMme_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiInd
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there are no devices. These values are incremented below if and when
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there are no devices. These values are incremented below if and when
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devices are successfully initialized.
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devices are successfully initialized.
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*/
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*/
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/* these are all updated by CommitDeviceInfos() */
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(*hostApi)->info.deviceCount = 0;
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(*hostApi)->info.deviceCount = 0;
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(*hostApi)->info.defaultInputDevice = paNoDevice;
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(*hostApi)->info.defaultInputDevice = paNoDevice;
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(*hostApi)->info.defaultOutputDevice = paNoDevice;
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(*hostApi)->info.defaultOutputDevice = paNoDevice;
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winMmeHostApi->inputDeviceCount = 0;
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winMmeHostApi->inputDeviceCount = 0;
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winMmeHostApi->outputDeviceCount = 0;
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winMmeHostApi->outputDeviceCount = 0;
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#if !defined(DRVM_MAPPER_PREFERRED_GET)
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result = ScanDeviceInfos( &winMmeHostApi->inheritedHostApiRep, hostApiIndex, &scanResults, &deviceCount );
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/* DRVM_MAPPER_PREFERRED_GET is defined in mmddk.h but we avoid a dependency on the DDK by defining it here */
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#define DRVM_MAPPER_PREFERRED_GET (0x2000+21)
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#endif
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/* the following calls assume that if wave*Message fails the preferred device parameter won't be modified */
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preferredDeviceStatusFlags = 0;
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waveInPreferredDevice = -1;
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waveInMessage( (HWAVEIN)WAVE_MAPPER, DRVM_MAPPER_PREFERRED_GET, (DWORD_PTR)&waveInPreferredDevice, (DWORD_PTR)&preferredDeviceStatusFlags );
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preferredDeviceStatusFlags = 0;
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waveOutPreferredDevice = -1;
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waveOutMessage( (HWAVEOUT)WAVE_MAPPER, DRVM_MAPPER_PREFERRED_GET, (DWORD_PTR)&waveOutPreferredDevice, (DWORD_PTR)&preferredDeviceStatusFlags );
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maximumPossibleDeviceCount = 0;
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inputDeviceCount = waveInGetNumDevs();
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if( inputDeviceCount > 0 )
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maximumPossibleDeviceCount += inputDeviceCount + 1; /* assume there is a WAVE_MAPPER */
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outputDeviceCount = waveOutGetNumDevs();
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if( outputDeviceCount > 0 )
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maximumPossibleDeviceCount += outputDeviceCount + 1; /* assume there is a WAVE_MAPPER */
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if( maximumPossibleDeviceCount > 0 ){
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(*hostApi)->deviceInfos = (PaDeviceInfo**)PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(PaDeviceInfo*) * maximumPossibleDeviceCount );
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if( !(*hostApi)->deviceInfos )
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{
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result = paInsufficientMemory;
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goto error;
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}
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/* allocate all device info structs in a contiguous block */
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deviceInfoArray = (PaWinMmeDeviceInfo*)PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(PaWinMmeDeviceInfo) * maximumPossibleDeviceCount );
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if( !deviceInfoArray )
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{
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result = paInsufficientMemory;
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goto error;
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}
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winMmeHostApi->winMmeDeviceIds = (UINT*)PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(int) * maximumPossibleDeviceCount );
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if( !winMmeHostApi->winMmeDeviceIds )
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{
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result = paInsufficientMemory;
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goto error;
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}
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GetDefaultLatencies( &defaultLowLatency, &defaultHighLatency );
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if( inputDeviceCount > 0 ){
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/* -1 is the WAVE_MAPPER */
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for( i = -1; i < inputDeviceCount; ++i ){
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UINT winMmeDeviceId = (UINT)((i==-1) ? WAVE_MAPPER : i);
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PaWinMmeDeviceInfo *wmmeDeviceInfo = &deviceInfoArray[ (*hostApi)->info.deviceCount ];
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PaDeviceInfo *deviceInfo = &wmmeDeviceInfo->inheritedDeviceInfo;
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deviceInfo->structVersion = 3;
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deviceInfo->hostApi = hostApiIndex;
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deviceInfo->maxInputChannels = 0;
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wmmeDeviceInfo->deviceInputChannelCountIsKnown = 1;
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deviceInfo->maxOutputChannels = 0;
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wmmeDeviceInfo->deviceOutputChannelCountIsKnown = 1;
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deviceInfo->defaultLowInputLatency = defaultLowLatency;
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deviceInfo->defaultLowOutputLatency = defaultLowLatency;
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deviceInfo->defaultHighInputLatency = defaultHighLatency;
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deviceInfo->defaultHighOutputLatency = defaultHighLatency;
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result = InitializeInputDeviceInfo( winMmeHostApi, wmmeDeviceInfo,
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winMmeDeviceId, &deviceInfoInitializationSucceeded );
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if( result != paNoError )
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if( result != paNoError )
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{
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goto error;
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goto error;
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if( deviceInfoInitializationSucceeded ){
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if( (*hostApi)->info.defaultInputDevice == paNoDevice ){
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/* if there is currently no default device, use the first one available */
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(*hostApi)->info.defaultInputDevice = (*hostApi)->info.deviceCount;
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}else if( winMmeDeviceId == waveInPreferredDevice ){
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/* set the default device to the system preferred device */
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(*hostApi)->info.defaultInputDevice = (*hostApi)->info.deviceCount;
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}
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}
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winMmeHostApi->winMmeDeviceIds[ (*hostApi)->info.deviceCount ] = winMmeDeviceId;
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/* FIXME for now we ignore the result of CommitDeviceInfos(), it should probably be an atomic non-failing operation */
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(*hostApi)->deviceInfos[ (*hostApi)->info.deviceCount ] = deviceInfo;
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CommitDeviceInfos( &winMmeHostApi->inheritedHostApiRep, hostApiIndex, scanResults, deviceCount );
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winMmeHostApi->inputDeviceCount++;
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(*hostApi)->info.deviceCount++;
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}
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}
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}
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if( outputDeviceCount > 0 ){
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/* -1 is the WAVE_MAPPER */
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for( i = -1; i < outputDeviceCount; ++i ){
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UINT winMmeDeviceId = (UINT)((i==-1) ? WAVE_MAPPER : i);
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PaWinMmeDeviceInfo *wmmeDeviceInfo = &deviceInfoArray[ (*hostApi)->info.deviceCount ];
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PaDeviceInfo *deviceInfo = &wmmeDeviceInfo->inheritedDeviceInfo;
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deviceInfo->structVersion = 3;
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deviceInfo->hostApi = hostApiIndex;
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deviceInfo->maxInputChannels = 0;
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wmmeDeviceInfo->deviceInputChannelCountIsKnown = 1;
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deviceInfo->maxOutputChannels = 0;
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wmmeDeviceInfo->deviceOutputChannelCountIsKnown = 1;
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deviceInfo->defaultLowInputLatency = defaultLowLatency;
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deviceInfo->defaultLowOutputLatency = defaultLowLatency;
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deviceInfo->defaultHighInputLatency = defaultHighLatency;
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deviceInfo->defaultHighOutputLatency = defaultHighLatency;
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result = InitializeOutputDeviceInfo( winMmeHostApi, wmmeDeviceInfo,
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winMmeDeviceId, &deviceInfoInitializationSucceeded );
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if( result != paNoError )
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goto error;
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if( deviceInfoInitializationSucceeded ){
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if( (*hostApi)->info.defaultOutputDevice == paNoDevice ){
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/* if there is currently no default device, use the first one available */
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(*hostApi)->info.defaultOutputDevice = (*hostApi)->info.deviceCount;
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}else if( winMmeDeviceId == waveOutPreferredDevice ){
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/* set the default device to the system preferred device */
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(*hostApi)->info.defaultOutputDevice = (*hostApi)->info.deviceCount;
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}
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winMmeHostApi->winMmeDeviceIds[ (*hostApi)->info.deviceCount ] = winMmeDeviceId;
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(*hostApi)->deviceInfos[ (*hostApi)->info.deviceCount ] = deviceInfo;
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winMmeHostApi->outputDeviceCount++;
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(*hostApi)->info.deviceCount++;
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}
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}
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}
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}
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InitializeDefaultDeviceIdsFromEnv( winMmeHostApi );
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(*hostApi)->Terminate = Terminate;
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(*hostApi)->Terminate = Terminate;
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(*hostApi)->OpenStream = OpenStream;
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(*hostApi)->OpenStream = OpenStream;
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(*hostApi)->IsFormatSupported = IsFormatSupported;
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(*hostApi)->IsFormatSupported = IsFormatSupported;
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(*hostApi)->ScanDeviceInfos = 0;
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(*hostApi)->ScanDeviceInfos = ScanDeviceInfos;
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(*hostApi)->CommitDeviceInfos = 0;
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(*hostApi)->CommitDeviceInfos = CommitDeviceInfos;
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(*hostApi)->DisposeDeviceInfos = 0;
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(*hostApi)->DisposeDeviceInfos = DisposeDeviceInfos;
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PaUtil_InitializeStreamInterface( &winMmeHostApi->callbackStreamInterface, CloseStream, StartStream,
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PaUtil_InitializeStreamInterface( &winMmeHostApi->callbackStreamInterface, CloseStream, StartStream,
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StopStream, AbortStream, IsStreamStopped, IsStreamActive,
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StopStream, AbortStream, IsStreamStopped, IsStreamActive,
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@ -1417,7 +1294,290 @@ static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
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return paFormatIsSupported;
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return paFormatIsSupported;
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}
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}
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/***********************************************************************************/
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static PaError ScanDeviceInfos( struct PaUtilHostApiRepresentation *hostApi, PaHostApiIndex hostApiIndex, void **scanResults, int *newDeviceCount )
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{
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PaWinMmeHostApiRepresentation *winMmeHostApi = (PaWinMmeHostApiRepresentation*)hostApi;
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PaWinMmeDeviceInfo *deviceInfoArray;
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//char comWasInitialized = winMmeHostApi->comWasInitialized;
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PaError result = paNoError;
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PaWinMmeScanDeviceInfosResults *outArgument = 0;
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//DSDeviceNamesAndGUIDs deviceNamesAndGUIDs;
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int i = 0;
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int maximumPossibleDeviceCount = 0;
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int inputDeviceCount, outputDeviceCount;
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int deviceInfoInitializationSucceeded;
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PaTime defaultLowLatency, defaultHighLatency;
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DWORD waveInPreferredDevice, waveOutPreferredDevice;
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DWORD preferredDeviceStatusFlags;
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// Check preconditions
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if( /*!comWasInitialized ||*/ scanResults == NULL || newDeviceCount == NULL )
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return paInternalError;
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/* initialize the out params */
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*scanResults = NULL;
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*newDeviceCount = 0;
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#if !defined(DRVM_MAPPER_PREFERRED_GET)
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/* DRVM_MAPPER_PREFERRED_GET is defined in mmddk.h but we avoid a dependency on the DDK by defining it here */
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#define DRVM_MAPPER_PREFERRED_GET (0x2000+21)
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#endif
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/* the following calls assume that if wave*Message fails the preferred device parameter won't be modified */
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preferredDeviceStatusFlags = 0;
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waveInPreferredDevice = -1;
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waveInMessage( (HWAVEIN)WAVE_MAPPER, DRVM_MAPPER_PREFERRED_GET, (DWORD_PTR)&waveInPreferredDevice, (DWORD_PTR)&preferredDeviceStatusFlags );
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preferredDeviceStatusFlags = 0;
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waveOutPreferredDevice = -1;
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waveOutMessage( (HWAVEOUT)WAVE_MAPPER, DRVM_MAPPER_PREFERRED_GET, (DWORD_PTR)&waveOutPreferredDevice, (DWORD_PTR)&preferredDeviceStatusFlags );
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maximumPossibleDeviceCount = 0;
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inputDeviceCount = waveInGetNumDevs();
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if( inputDeviceCount > 0 )
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maximumPossibleDeviceCount += inputDeviceCount + 1; // assume there is a WAVE_MAPPER
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outputDeviceCount = waveOutGetNumDevs();
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if( outputDeviceCount > 0 )
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maximumPossibleDeviceCount += outputDeviceCount + 1;// assume there is a WAVE_MAPPER
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if( maximumPossibleDeviceCount > 0 )
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{
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/* Allocate the out param for all the info we need */
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outArgument = (PaWinMmeScanDeviceInfosResults *) PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(PaWinMmeScanDeviceInfosResults) );
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if( !outArgument )
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{
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result = paInsufficientMemory;
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goto error;
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}
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/* allocate array for pointers to PaDeviceInfo structs */
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outArgument->deviceInfos = (PaDeviceInfo**)PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(PaDeviceInfo*) * maximumPossibleDeviceCount );
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if( !outArgument->deviceInfos )
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{
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result = paInsufficientMemory;
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goto error;
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}
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// allocate all device info structs in a contiguous block
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deviceInfoArray = (PaWinMmeDeviceInfo*)PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(PaWinMmeDeviceInfo) * maximumPossibleDeviceCount );
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if( !deviceInfoArray )
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{
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result = paInsufficientMemory;
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goto error;
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}
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winMmeHostApi->winMmeDeviceIds = (UINT*)PaUtil_GroupAllocateMemory(
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winMmeHostApi->allocations, sizeof(int) * maximumPossibleDeviceCount );
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if( !winMmeHostApi->winMmeDeviceIds )
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{
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result = paInsufficientMemory;
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goto error;
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}
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for( i = 0 ; i < maximumPossibleDeviceCount; ++i )
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{
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PaDeviceInfo *deviceInfo = &deviceInfoArray[i].inheritedDeviceInfo;
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deviceInfo->structVersion = 3;
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deviceInfo->hostApi = hostApiIndex;
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deviceInfo->name = 0;
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|
outArgument->deviceInfos[ i ] = deviceInfo;
|
||||||
|
}
|
||||||
|
outArgument->inputDeviceCount = 0;
|
||||||
|
outArgument->outputDeviceCount = 0;
|
||||||
|
|
||||||
|
GetDefaultLatencies( &defaultLowLatency, &defaultHighLatency );
|
||||||
|
|
||||||
|
if( inputDeviceCount > 0 )
|
||||||
|
{
|
||||||
|
// -1 is the WAVE_MAPPER
|
||||||
|
for( i = -1; i < inputDeviceCount; ++i )
|
||||||
|
{
|
||||||
|
UINT winMmeDeviceId = (UINT)((i==-1) ? WAVE_MAPPER : i);
|
||||||
|
PaWinMmeDeviceInfo *wmmeDeviceInfo = (PaWinMmeDeviceInfo*)outArgument->deviceInfos[*newDeviceCount];
|
||||||
|
PaDeviceInfo *deviceInfo = &wmmeDeviceInfo->inheritedDeviceInfo;
|
||||||
|
deviceInfo->structVersion = 3;
|
||||||
|
deviceInfo->hostApi = hostApiIndex;
|
||||||
|
|
||||||
|
deviceInfo->maxInputChannels = 0;
|
||||||
|
wmmeDeviceInfo->deviceInputChannelCountIsKnown = 1;
|
||||||
|
deviceInfo->maxOutputChannels = 0;
|
||||||
|
wmmeDeviceInfo->deviceOutputChannelCountIsKnown = 1;
|
||||||
|
|
||||||
|
deviceInfo->defaultLowInputLatency = defaultLowLatency;
|
||||||
|
deviceInfo->defaultLowOutputLatency = defaultLowLatency;
|
||||||
|
deviceInfo->defaultHighInputLatency = defaultHighLatency;
|
||||||
|
deviceInfo->defaultHighOutputLatency = defaultHighLatency;
|
||||||
|
|
||||||
|
result = InitializeInputDeviceInfo( winMmeHostApi, wmmeDeviceInfo,
|
||||||
|
winMmeDeviceId, &deviceInfoInitializationSucceeded );
|
||||||
|
/* ignore error results here and just skip the device */
|
||||||
|
if( result != paNoError )
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if( deviceInfoInitializationSucceeded )
|
||||||
|
{
|
||||||
|
if( outArgument->defaultInputDevice == paNoDevice )
|
||||||
|
{
|
||||||
|
// if there is currently no default device, use the first one available
|
||||||
|
outArgument->defaultInputDevice = *newDeviceCount;
|
||||||
|
|
||||||
|
}
|
||||||
|
else if( winMmeDeviceId == waveInPreferredDevice )
|
||||||
|
{
|
||||||
|
// set the default device to the system preferred device
|
||||||
|
outArgument->defaultInputDevice = *newDeviceCount;
|
||||||
|
}
|
||||||
|
|
||||||
|
winMmeHostApi->winMmeDeviceIds[ *newDeviceCount ] = winMmeDeviceId;
|
||||||
|
outArgument->inputDeviceCount++;
|
||||||
|
(*newDeviceCount)++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if( outputDeviceCount > 0 )
|
||||||
|
{
|
||||||
|
// -1 is the WAVE_MAPPER
|
||||||
|
for( i = -1; i < outputDeviceCount; ++i )
|
||||||
|
{
|
||||||
|
UINT winMmeDeviceId = (UINT)((i==-1) ? WAVE_MAPPER : i);
|
||||||
|
PaWinMmeDeviceInfo *wmmeDeviceInfo = (PaWinMmeDeviceInfo*)outArgument->deviceInfos[*newDeviceCount];
|
||||||
|
PaDeviceInfo *deviceInfo = &wmmeDeviceInfo->inheritedDeviceInfo;
|
||||||
|
deviceInfo->structVersion = 3;
|
||||||
|
deviceInfo->hostApi = hostApiIndex;
|
||||||
|
|
||||||
|
deviceInfo->maxInputChannels = 0;
|
||||||
|
wmmeDeviceInfo->deviceInputChannelCountIsKnown = 1;
|
||||||
|
deviceInfo->maxOutputChannels = 0;
|
||||||
|
wmmeDeviceInfo->deviceOutputChannelCountIsKnown = 1;
|
||||||
|
|
||||||
|
deviceInfo->defaultLowInputLatency = defaultLowLatency;
|
||||||
|
deviceInfo->defaultLowOutputLatency = defaultLowLatency;
|
||||||
|
deviceInfo->defaultHighInputLatency = defaultHighLatency;
|
||||||
|
deviceInfo->defaultHighOutputLatency = defaultHighLatency;
|
||||||
|
|
||||||
|
result = InitializeOutputDeviceInfo( winMmeHostApi, wmmeDeviceInfo,
|
||||||
|
winMmeDeviceId, &deviceInfoInitializationSucceeded );
|
||||||
|
/* ignore error results here and just skip the device */
|
||||||
|
if( result != paNoError )
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if( deviceInfoInitializationSucceeded )
|
||||||
|
{
|
||||||
|
if( outArgument->defaultOutputDevice == paNoDevice )
|
||||||
|
{
|
||||||
|
// if there is currently no default device, use the first one available
|
||||||
|
outArgument->defaultOutputDevice = *newDeviceCount;
|
||||||
|
|
||||||
|
}
|
||||||
|
else if( winMmeDeviceId == waveOutPreferredDevice )
|
||||||
|
{
|
||||||
|
// set the default device to the system preferred device
|
||||||
|
outArgument->defaultOutputDevice = *newDeviceCount;
|
||||||
|
}
|
||||||
|
|
||||||
|
winMmeHostApi->winMmeDeviceIds[ *newDeviceCount ] = winMmeDeviceId;
|
||||||
|
outArgument->outputDeviceCount++;
|
||||||
|
(*newDeviceCount)++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
InitializeDefaultDeviceIdsFromEnv( winMmeHostApi );
|
||||||
|
*scanResults = outArgument;
|
||||||
|
|
||||||
|
return result;
|
||||||
|
error:
|
||||||
|
|
||||||
|
if( outArgument )
|
||||||
|
{
|
||||||
|
if( outArgument->deviceInfos )
|
||||||
|
{
|
||||||
|
if( outArgument->deviceInfos[0] )
|
||||||
|
{
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, outArgument->deviceInfos[0] );
|
||||||
|
}
|
||||||
|
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, outArgument->deviceInfos );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static PaError CommitDeviceInfos( struct PaUtilHostApiRepresentation *hostApi, PaHostApiIndex index, void *scanResults, int deviceCount )
|
||||||
|
{
|
||||||
|
PaWinMmeHostApiRepresentation *winMmeHostApi = (PaWinMmeHostApiRepresentation*)hostApi;
|
||||||
|
PaError result = paNoError;
|
||||||
|
int i = 0;
|
||||||
|
|
||||||
|
hostApi->info.deviceCount = 0;
|
||||||
|
hostApi->info.defaultInputDevice = paNoDevice;
|
||||||
|
hostApi->info.defaultOutputDevice = paNoDevice;
|
||||||
|
|
||||||
|
/* Free any old memory which might be in the device info */
|
||||||
|
if( hostApi->deviceInfos )
|
||||||
|
{
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, hostApi->deviceInfos[0] );
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, hostApi->deviceInfos );
|
||||||
|
hostApi->deviceInfos = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if( scanResults != NULL )
|
||||||
|
{
|
||||||
|
PaWinMmeScanDeviceInfosResults *scanDeviceInfosResults = ( PaWinMmeScanDeviceInfosResults * ) scanResults;
|
||||||
|
|
||||||
|
if( deviceCount > 0 )
|
||||||
|
{
|
||||||
|
// use the array allocated in ScanDeviceInfos() as our deviceInfos
|
||||||
|
hostApi->deviceInfos = scanDeviceInfosResults->deviceInfos;
|
||||||
|
|
||||||
|
hostApi->info.defaultInputDevice = scanDeviceInfosResults->defaultInputDevice;
|
||||||
|
hostApi->info.defaultOutputDevice = scanDeviceInfosResults->defaultOutputDevice;
|
||||||
|
|
||||||
|
hostApi->info.deviceCount = deviceCount;
|
||||||
|
|
||||||
|
winMmeHostApi->inputDeviceCount = scanDeviceInfosResults->inputDeviceCount;
|
||||||
|
winMmeHostApi->outputDeviceCount = scanDeviceInfosResults->outputDeviceCount;
|
||||||
|
}
|
||||||
|
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, scanDeviceInfosResults );
|
||||||
|
}
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static PaError DisposeDeviceInfos( struct PaUtilHostApiRepresentation *hostApi, void *scanResults, int deviceCount )
|
||||||
|
{
|
||||||
|
PaWinMmeHostApiRepresentation *winMmeHostApi = (PaWinMmeHostApiRepresentation*)hostApi;
|
||||||
|
|
||||||
|
if( scanResults != NULL )
|
||||||
|
{
|
||||||
|
PaWinMmeScanDeviceInfosResults *scanDeviceInfosResults = ( PaWinMmeScanDeviceInfosResults * ) scanResults;
|
||||||
|
|
||||||
|
if( scanDeviceInfosResults->deviceInfos )
|
||||||
|
{
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, scanDeviceInfosResults->deviceInfos[0] ); // all device info structs are allocated in a block so we can destroy them here
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, scanDeviceInfosResults->deviceInfos );
|
||||||
|
}
|
||||||
|
|
||||||
|
PaUtil_GroupFreeMemory( winMmeHostApi->allocations, scanDeviceInfosResults );
|
||||||
|
}
|
||||||
|
|
||||||
|
return paNoError;
|
||||||
|
}
|
||||||
|
|
||||||
|
/***********************************************************************************/
|
||||||
|
|
||||||
static void SelectBufferSizeAndCount( unsigned long baseBufferSize,
|
static void SelectBufferSizeAndCount( unsigned long baseBufferSize,
|
||||||
unsigned long requestedLatency,
|
unsigned long requestedLatency,
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue