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Fixed WASAPI input stream releasing a different buffer size than it got.

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This caused a SoundIOErrorStreaming error and all following reads would fail. It took a while in the microphone sample, but after ~30 seconds it would always fail for me.
This commit is contained in:
Nils Daumann 2017-05-24 22:57:35 +02:00
parent fde62658d8
commit e3973967d2
2 changed files with 15 additions and 5 deletions
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19
src/wasapi.c
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@ -2084,7 +2084,9 @@ static int instream_begin_read_wasapi(struct SoundIoPrivate *si, struct SoundIoI
{
return SoundIoErrorStreaming;
}
isw->read_buf_frames_left = frames_to_read;
isw->opened_buf_frames = frames_to_read;
isw->read_buf_frames_left = frames_to_read;
if (flags & AUDCLNT_BUFFERFLAGS_SILENT)
isw->read_buf = NULL;
}
@ -2096,6 +2098,8 @@ static int instream_begin_read_wasapi(struct SoundIoPrivate *si, struct SoundIoI
for (int ch = 0; ch < instream->layout.channel_count; ch += 1) {
isw->areas[ch].ptr = isw->read_buf + ch * instream->bytes_per_sample;
isw->areas[ch].step = instream->bytes_per_frame;
isw->areas[ch].ptr += instream->bytes_per_frame * (isw->opened_buf_frames - isw->read_buf_frames_left);
}
*out_areas = isw->areas;
@ -2109,10 +2113,15 @@ static int instream_begin_read_wasapi(struct SoundIoPrivate *si, struct SoundIoI
static int instream_end_read_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
struct SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
HRESULT hr;
if (FAILED(hr = IAudioCaptureClient_ReleaseBuffer(isw->audio_capture_client, isw->read_frame_count))) {
return SoundIoErrorStreaming;
}
isw->read_buf_frames_left -= isw->read_frame_count;
isw->read_buf_frames_left -= isw->read_frame_count;
if (isw->read_buf_frames_left <= 0) {
if (FAILED(hr = IAudioCaptureClient_ReleaseBuffer(isw->audio_capture_client, isw->opened_buf_frames))) {
return SoundIoErrorStreaming;
}
}
return 0;
}

1
src/wasapi.h
View file

@ -100,6 +100,7 @@ struct SoundIoInStreamWasapi {
bool started;
char *read_buf;
int read_buf_frames_left;
int opened_buf_frames;
struct SoundIoChannelArea areas[SOUNDIO_MAX_CHANNELS];
};