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WASAPI: Correctly handle AUDCLNT_BUFFERFLAGS_SILENT.

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This commit is contained in:
David Reid
2019-09-30 20:15:12 +10:00
parent c69b1e48c4
commit a38fe4a042
1 changed files with 42 additions and 8 deletions
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miniaudio.h
+42 -8
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@@ -5715,10 +5715,17 @@ ma_uint32 ma_device__pcm_converter__on_read_from_buffer_capture(ma_pcm_converter
}
bytesToRead = framesToRead * ma_get_bytes_per_frame(pConverter->formatConverterIn.config.formatIn, pConverter->channelRouter.config.channelsIn);
ma_copy_memory(pFramesOut, pDevice->capture._dspFrames, bytesToRead);
pDevice->capture._dspFrameCount -= framesToRead;
pDevice->capture._dspFrames += bytesToRead;
/* pDevice->capture._dspFrames can be null in which case it should be treated as silence. */
if (pDevice->capture._dspFrames != NULL) {
ma_copy_memory(pFramesOut, pDevice->capture._dspFrames, bytesToRead);
pDevice->capture._dspFrames += bytesToRead;
} else {
ma_zero_memory(pFramesOut, bytesToRead);
}
pDevice->capture._dspFrameCount -= framesToRead;
return framesToRead;
}
@@ -5740,10 +5747,17 @@ ma_uint32 ma_device__pcm_converter__on_read_from_buffer_playback(ma_pcm_converte
}
bytesToRead = framesToRead * ma_get_bytes_per_frame(pConverter->formatConverterIn.config.formatIn, pConverter->channelRouter.config.channelsIn);
ma_copy_memory(pFramesOut, pDevice->playback._dspFrames, bytesToRead);
pDevice->playback._dspFrameCount -= framesToRead;
pDevice->playback._dspFrames += bytesToRead;
/* pDevice->playback._dspFrames can be null in which case it should be treated as silence. */
if (pDevice->playback._dspFrames != NULL) {
ma_copy_memory(pFramesOut, pDevice->playback._dspFrames, bytesToRead);
pDevice->playback._dspFrames += bytesToRead;
} else {
ma_zero_memory(pFramesOut, bytesToRead);
}
pDevice->playback._dspFrameCount -= framesToRead;
return framesToRead;
}
@@ -6918,6 +6932,8 @@ WASAPI Backend
#endif /* 0 */
/* Some compilers don't define VerifyVersionInfoW. Need to write this ourselves. */
#define MA_WIN32_WINNT_VISTA 0x0600
#define MA_VER_MINORVERSION 0x01
@@ -7027,6 +7043,11 @@ typedef ma_int64 MA_REFERENCE_TIME;
#define MA_AUDCLNT_S_BUFFER_EMPTY (143196161)
#define MA_AUDCLNT_E_DEVICE_IN_USE (-2004287478)
/* Buffer flags. */
#define MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY 1
#define MA_AUDCLNT_BUFFERFLAGS_SILENT 2
#define MA_AUDCLNT_BUFFERFLAGS_TIMESTAMP_ERROR 4
typedef enum
{
ma_eRender = 0,
@@ -9137,17 +9158,30 @@ ma_result ma_device_main_loop__wasapi(ma_device* pDevice)
break;
}
/* TODO: How do we handle the capture flags returned by GetBuffer()? In particular, AUDCLNT_BUFFERFLAGS_SILENT (1). */
/*
Debug output for IAudioCaptureClient_GetBuffer(). The flagsCapture variable will contain information. A glitch will occur when
AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY (1) is set.
*/
#ifdef MA_DEBUG_OUTPUT
if (flagsCapture != 0) {
printf("[WASAPI] Capture Flags: %d\n", flagsCapture);
}
#endif
if ((flagsCapture & MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY) == 0) {
/* Glitched. Probably due to an overrun. */
}
mappedBufferFramesRemainingCapture = mappedBufferSizeInFramesCapture;
pDevice->capture._dspFrameCount = mappedBufferSizeInFramesCapture;
pDevice->capture._dspFrames = (const ma_uint8*)pMappedBufferCapture;
if ((flagsCapture & MA_AUDCLNT_BUFFERFLAGS_SILENT) == 0) {
pDevice->capture._dspFrames = (const ma_uint8*)pMappedBufferCapture;
} else {
pDevice->capture._dspFrames = NULL;
}
}