DirectSound : can't use combined channelMask with paWinDirectSoundUseChannelMask flag. Just noise

[Edynamic1977]

Hello,

I've an issue with portaudio 19.6 stable.

you can find PaStreamParameters initialization below :

Targeted Soundcards : TASCAM 208i and TASCAM HR 4x4 US

PaWinDirectSoundStreamInfo oDSStreamInfoOutput;
oDSStreamInfoOutput.size = sizeof(PaWinDirectSoundStreamInfo);
oDSStreamInfoOutput.hostApiType = paDirectSound;
oDSStreamInfoOutput.version = 2;
oDSStreamInfoOutput.flags = paWinDirectSoundUseChannelMask;
oDSStreamInfoOutput.framesPerBuffer = 4096;

oDSStreamInfoOutput.channelMask = 0x1 | 0x2 | 0x10 | 0x20; //for TASCAM HR 4x4 US
oDSStreamInfoOutput.channelMask = 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x200 | 0x400; //for TASCAM 208i

PaStreamParameters* oOutputParameters = new PaStreamParameters();
oOutputParameters->device = CARD_ID

oOutputParameters->channelCount = 4;//for TASCAM HR 4x4 US
oOutputParameters->channelCount = 8;//for TASCAM 208i

oOutputParameters->sampleFormat = paInt16;
oOutputParameters->suggestedLatency = 0.120F;
oOutputParameters->hostApiSpecificStreamInfo = &oDSStreamInfoOutput;

I can just use one channel with channelCount = 1

All is OK with this code with internal realtek soundcard

PaWinDirectSoundStreamInfo oDSStreamInfoOutput;
oDSStreamInfoOutput.size = sizeof(PaWinDirectSoundStreamInfo);
oDSStreamInfoOutput.hostApiType = paDirectSound;
oDSStreamInfoOutput.version = 2;
oDSStreamInfoOutput.flags = paWinDirectSoundUseChannelMask;
oDSStreamInfoOutput.framesPerBuffer = 4096;
oDSStreamInfoOutput.channelMask = 0x1 | 0x2;

PaStreamParameters* oOutputParameters = new PaStreamParameters();
oOutputParameters->device = CARD_ID
oOutputParameters->channelCount = 1;
oOutputParameters->sampleFormat = paInt16;
oOutputParameters->suggestedLatency = 0.120F;
oOutputParameters->hostApiSpecificStreamInfo = &oDSStreamInfoOutput;

[RossBencina]

Your masks seem strange to me. What about these masks:

- oDSStreamInfoOutput.channelMask = 0x1 | 0x2 | 0x10 | 0x20; //for TASCAM HR 4x4 US
+ oDSStreamInfoOutput.channelMask = 0x1 | 0x2 | 0x4 | 0x8; //for TASCAM HR 4x4 US

- oDSStreamInfoOutput.channelMask = 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x200 | 0x400; //for TASCAM 208i
+ oDSStreamInfoOutput.channelMask = 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x40 | 0x80; //for TASCAM 208i