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CoreAudio: fix supported input and output channel count.

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Only the maximum number of channels was reported as being supported.
We now report all possible configurations up to the maximum number of
channels to be supported.

Task-number: QTBUG-34639
Change-Id: Ib4c599ea8b772ebeaaca95137d24bac49dbd80d3
Reviewed-by: Christian Stromme <christian.stromme@digia.com>
Reviewed-by: Ivan Romanov <drizt@land.ru>
Reviewed-by: Andy Nichols <andy.nichols@digia.com>
This commit is contained in:
Yoann Lopes
2013-11-26 16:34:29 +01:00
committed by The Qt Project
parent 9b7fd8c769
commit dd11f6d052
1 changed files with 13 additions and 12 deletions
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25
src/plugins/coreaudio/coreaudiodeviceinfo.mm
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@@ -188,11 +188,11 @@ QList<int> CoreAudioDeviceInfo::supportedSampleRates()
QList<int> CoreAudioDeviceInfo::supportedChannelCounts()
{
QSet<int> supportedChannels;
QList<int> supportedChannels;
int maxChannels = 0;
#if defined(Q_OS_OSX)
UInt32 propSize = 0;
int channels = 0;
AudioObjectPropertyScope scope = m_mode == QAudio::AudioInput ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput;
AudioObjectPropertyAddress streamConfigurationPropertyAddress = { kAudioDevicePropertyStreamConfiguration,
scope,
@@ -203,24 +203,25 @@ QList<int> CoreAudioDeviceInfo::supportedChannelCounts()
if (audioBufferList != 0) {
if (AudioObjectGetPropertyData(m_deviceId, &streamConfigurationPropertyAddress, 0, NULL, &propSize, audioBufferList) == noErr) {
for (int i = 0; i < int(audioBufferList->mNumberBuffers); ++i) {
channels += audioBufferList->mBuffers[i].mNumberChannels;
supportedChannels << channels;
}
for (int i = 0; i < int(audioBufferList->mNumberBuffers); ++i)
maxChannels += audioBufferList->mBuffers[i].mNumberChannels;
}
free(audioBufferList);
}
}
#else //iOS
if (m_mode == QAudio::AudioInput) {
supportedChannels << CoreAudioSessionManager::instance().inputChannelCount();
} else if (m_mode == QAudio::AudioOutput) {
supportedChannels << CoreAudioSessionManager::instance().outputChannelCount();
}
if (m_mode == QAudio::AudioInput)
maxChannels = CoreAudioSessionManager::instance().inputChannelCount();
else if (m_mode == QAudio::AudioOutput)
maxChannels = CoreAudioSessionManager::instance().outputChannelCount();
#endif
return supportedChannels.toList();
// Assume all channel configurations are supported up to the maximum number of channels
for (int i = 1; i <= maxChannels; ++i)
supportedChannels.append(i);
return supportedChannels;
}