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Fixed for more than 1 stream #338

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Fixed for more than 1 stream #338

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26 changes: 19 additions & 7 deletions EZAudio/EZAudioDevice.m
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Original file line number Diff line number Diff line change
Expand Up @@ -396,22 +396,34 @@ + (NSInteger)channelCountForScope:(AudioObjectPropertyScope)scope
address.mElement = kAudioObjectPropertyElementMaster;
address.mSelector = kAudioDevicePropertyStreamConfiguration;

AudioBufferList streamConfiguration;
UInt32 propSize = sizeof(streamConfiguration);
UInt32 dataSize = 0;
[EZAudioUtilities checkResult:AudioObjectGetPropertyDataSize(deviceID,
&address,
0,
NULL,
&dataSize)
operation:"Failed to get buffer size"];

AudioBufferList *bufferList = (AudioBufferList *)(malloc(dataSize));

[EZAudioUtilities checkResult:AudioObjectGetPropertyData(deviceID,
&address,
0,
NULL,
&propSize,
&streamConfiguration)
operation:"Failed to get frame size"];
&dataSize,
bufferList)
operation:"Failed to get buffer list"];

UInt32 numBuffers = bufferList->mNumberBuffers;

NSInteger channelCount = 0;
for (NSInteger i = 0; i < streamConfiguration.mNumberBuffers; i++)
for (NSInteger i = 0; i < numBuffers; i++)
{
channelCount += streamConfiguration.mBuffers[i].mNumberChannels;
channelCount += bufferList->mBuffers[i].mNumberChannels;
}

free(bufferList), bufferList = NULL;

return channelCount;
}

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