static int dsound_get_status_in (LPDIRECTSOUNDCAPTUREBUFFER dscb,
DWORD *statusp)
{
HRESULT hr;
hr = IDirectSoundCaptureBuffer_GetStatus (dscb, statusp);
if (FAILED (hr)) {
dsound_logerr (hr, "Could not get capture buffer status\n");
return -1;
}
return 0;
}
/*
return number of readed bytes */
static guint
gst_directsound_src_read (GstAudioSrc * asrc, gpointer data, guint length,
GstClockTime * timestamp)
{
GstDirectSoundSrc *dsoundsrc;
HRESULT hRes; /* Result for windows functions */
DWORD dwCurrentCaptureCursor = 0;
DWORD dwBufferSize = 0;
LPVOID pLockedBuffer1 = NULL;
LPVOID pLockedBuffer2 = NULL;
DWORD dwSizeBuffer1 = 0;
DWORD dwSizeBuffer2 = 0;
DWORD dwStatus = 0;
GST_DEBUG_OBJECT (asrc, "reading directsoundsrc");
dsoundsrc = GST_DIRECTSOUND_SRC (asrc);
GST_DSOUND_LOCK (dsoundsrc);
/* Get current buffer status */
hRes = IDirectSoundCaptureBuffer_GetStatus (dsoundsrc->pDSBSecondary,
&dwStatus);
/* Starting capturing if not already */
if (!(dwStatus & DSCBSTATUS_CAPTURING)) {
hRes = IDirectSoundCaptureBuffer_Start (dsoundsrc->pDSBSecondary,
DSCBSTART_LOOPING);
// Sleep (dsoundsrc->latency_time/1000);
GST_DEBUG_OBJECT (asrc, "capture started");
}
// calculate_buffersize:
while (length > dwBufferSize) {
Sleep (dsoundsrc->latency_time / 1000);
hRes =
IDirectSoundCaptureBuffer_GetCurrentPosition (dsoundsrc->pDSBSecondary,
&dwCurrentCaptureCursor, NULL);
/* calculate the buffer */
if (dwCurrentCaptureCursor < dsoundsrc->current_circular_offset) {
dwBufferSize = dsoundsrc->buffer_size -
(dsoundsrc->current_circular_offset - dwCurrentCaptureCursor);
} else {
dwBufferSize =
dwCurrentCaptureCursor - dsoundsrc->current_circular_offset;
}
} // while (...
/* Lock the buffer */
hRes = IDirectSoundCaptureBuffer_Lock (dsoundsrc->pDSBSecondary,
dsoundsrc->current_circular_offset,
length,
&pLockedBuffer1, &dwSizeBuffer1, &pLockedBuffer2, &dwSizeBuffer2, 0L);
/* Copy buffer data to another buffer */
if (hRes == DS_OK) {
memcpy (data, pLockedBuffer1, dwSizeBuffer1);
}
/* ...and if something is in another buffer */
if (pLockedBuffer2 != NULL) {
memcpy (((guchar *) data + dwSizeBuffer1), pLockedBuffer2, dwSizeBuffer2);
}
dsoundsrc->current_circular_offset += dwSizeBuffer1 + dwSizeBuffer2;
dsoundsrc->current_circular_offset %= dsoundsrc->buffer_size;
IDirectSoundCaptureBuffer_Unlock (dsoundsrc->pDSBSecondary,
pLockedBuffer1, dwSizeBuffer1, pLockedBuffer2, dwSizeBuffer2);
GST_DSOUND_UNLOCK (dsoundsrc);
/* return length (readed data size in bytes) */
return length;
}
static void test_capture_buffer(LPDIRECTSOUNDCAPTURE dsco,
LPDIRECTSOUNDCAPTUREBUFFER dscbo, int record)
{
HRESULT rc;
DSCBCAPS dscbcaps;
WAVEFORMATEX wfx;
DWORD size,status;
capture_state_t state;
int i, ref;
/* Private dsound.dll: Error: Invalid caps pointer */
rc=IDirectSoundCaptureBuffer_GetCaps(dscbo,0);
ok(rc==DSERR_INVALIDPARAM,"IDirectSoundCaptureBuffer_GetCaps() should "
"have returned DSERR_INVALIDPARAM, returned: %08x\n", rc);
/* Private dsound.dll: Error: Invalid caps pointer */
dscbcaps.dwSize=0;
rc=IDirectSoundCaptureBuffer_GetCaps(dscbo,&dscbcaps);
ok(rc==DSERR_INVALIDPARAM,"IDirectSoundCaptureBuffer_GetCaps() should "
"have returned DSERR_INVALIDPARAM, returned: %08x\n", rc);
dscbcaps.dwSize=sizeof(dscbcaps);
rc=IDirectSoundCaptureBuffer_GetCaps(dscbo,&dscbcaps);
ok(rc==DS_OK,"IDirectSoundCaptureBuffer_GetCaps() failed: %08x\n", rc);
if (rc==DS_OK && winetest_debug > 1) {
trace(" Caps: size = %d flags=0x%08x buffer size=%d\n",
dscbcaps.dwSize,dscbcaps.dwFlags,dscbcaps.dwBufferBytes);
}
/* Query the format size. Note that it may not match sizeof(wfx) */
/* Private dsound.dll: Error: Either pwfxFormat or pdwSizeWritten must
* be non-NULL */
rc=IDirectSoundCaptureBuffer_GetFormat(dscbo,NULL,0,NULL);
ok(rc==DSERR_INVALIDPARAM,"IDirectSoundCaptureBuffer_GetFormat() should "
"have returned DSERR_INVALIDPARAM, returned: %08x\n", rc);
size=0;
rc=IDirectSoundCaptureBuffer_GetFormat(dscbo,NULL,0,&size);
ok(rc==DS_OK && size!=0,"IDirectSoundCaptureBuffer_GetFormat() should "
"have returned the needed size: rc=%08x, size=%d\n", rc,size);
rc=IDirectSoundCaptureBuffer_GetFormat(dscbo,&wfx,sizeof(wfx),NULL);
ok(rc==DS_OK,"IDirectSoundCaptureBuffer_GetFormat() failed: %08x\n", rc);
if (rc==DS_OK && winetest_debug > 1) {
trace(" Format: tag=0x%04x %dx%dx%d avg.B/s=%d align=%d\n",
wfx.wFormatTag,wfx.nSamplesPerSec,wfx.wBitsPerSample,
wfx.nChannels,wfx.nAvgBytesPerSec,wfx.nBlockAlign);
}
/* Private dsound.dll: Error: Invalid status pointer */
rc=IDirectSoundCaptureBuffer_GetStatus(dscbo,0);
ok(rc==DSERR_INVALIDPARAM,"IDirectSoundCaptureBuffer_GetStatus() should "
"have returned DSERR_INVALIDPARAM, returned: %08x\n", rc);
rc=IDirectSoundCaptureBuffer_GetStatus(dscbo,&status);
ok(rc==DS_OK,"IDirectSoundCaptureBuffer_GetStatus() failed: %08x\n", rc);
if (rc==DS_OK && winetest_debug > 1) {
trace(" Status=0x%04x\n",status);
}
ZeroMemory(&state, sizeof(state));
state.dscbo=dscbo;
state.wfx=&wfx;
state.buffer_size = dscbcaps.dwBufferBytes;
for (i = 0; i < NOTIFICATIONS; i++)
state.event[i] = CreateEvent( NULL, FALSE, FALSE, NULL );
state.size = dscbcaps.dwBufferBytes / NOTIFICATIONS;
rc=IDirectSoundCaptureBuffer_QueryInterface(dscbo,&IID_IDirectSoundNotify,
(void **)&(state.notify));
ok((rc==DS_OK)&&(state.notify!=NULL),
"IDirectSoundCaptureBuffer_QueryInterface() failed: %08x\n", rc);
for (i = 0; i < NOTIFICATIONS; i++) {
state.posnotify[i].dwOffset = (i * state.size) + state.size - 1;
state.posnotify[i].hEventNotify = state.event[i];
}
rc=IDirectSoundNotify_SetNotificationPositions(state.notify,NOTIFICATIONS,
state.posnotify);
ok(rc==DS_OK,"IDirectSoundNotify_SetNotificationPositions() failed: %08x\n", rc);
ref=IDirectSoundNotify_Release(state.notify);
ok(ref==0,"IDirectSoundNotify_Release(): has %d references, should have "
"0\n",ref);
if (record) {
rc=IDirectSoundCaptureBuffer_Start(dscbo,DSCBSTART_LOOPING);
ok(rc==DS_OK,"IDirectSoundCaptureBuffer_Start() failed: %08x\n", rc);
rc=IDirectSoundCaptureBuffer_GetStatus(dscbo,&status);
ok(rc==DS_OK,"IDirectSoundCaptureBuffer_GetStatus() failed: %08x\n", rc);
ok(status==(DSCBSTATUS_CAPTURING|DSCBSTATUS_LOOPING),
"GetStatus: bad status: %x\n",status);
/* wait for the notifications */
for (i = 0; i < (NOTIFICATIONS * 2); i++) {
rc=WaitForMultipleObjects(NOTIFICATIONS,state.event,FALSE,3000);
ok(rc==(WAIT_OBJECT_0+(i%NOTIFICATIONS)),
"WaitForMultipleObjects failed: 0x%x\n",rc);
if (rc!=(WAIT_OBJECT_0+(i%NOTIFICATIONS))) {
ok((rc==WAIT_TIMEOUT)||(rc==WAIT_FAILED),
"Wrong notification: should be %d, got %d\n",
i%NOTIFICATIONS,rc-WAIT_OBJECT_0);
}
if (!capture_buffer_service(&state))
break;
}
rc=IDirectSoundCaptureBuffer_Stop(dscbo);
ok(rc==DS_OK,"IDirectSoundCaptureBuffer_Stop() failed: %08x\n", rc);
}
}
/*
return number of readed bytes */
static guint
gst_directsound_src_read (GstAudioSrc * asrc, gpointer data, guint length,
GstClockTime * timestamp)
{
GstDirectSoundSrc *dsoundsrc;
guint64 sleep_time_ms, sleep_until;
GstClockID clock_id;
HRESULT hRes; /* Result for windows functions */
DWORD dwCurrentCaptureCursor = 0;
DWORD dwBufferSize = 0;
LPVOID pLockedBuffer1 = NULL;
LPVOID pLockedBuffer2 = NULL;
DWORD dwSizeBuffer1 = 0;
DWORD dwSizeBuffer2 = 0;
DWORD dwStatus = 0;
GST_DEBUG_OBJECT (asrc, "reading directsoundsrc");
dsoundsrc = GST_DIRECTSOUND_SRC (asrc);
GST_DSOUND_LOCK (dsoundsrc);
/* Get current buffer status */
hRes = IDirectSoundCaptureBuffer_GetStatus (dsoundsrc->pDSBSecondary,
&dwStatus);
if (FAILED (hRes)) {
GST_DSOUND_UNLOCK (dsoundsrc);
return -1;
}
/* Starting capturing if not already */
if (!(dwStatus & DSCBSTATUS_CAPTURING)) {
hRes = IDirectSoundCaptureBuffer_Start (dsoundsrc->pDSBSecondary,
DSCBSTART_LOOPING);
GST_INFO_OBJECT (asrc, "capture started");
}
/* Loop till the source has produced bytes equal to or greater than @length.
*
* DirectSound has a notification-based API that uses Windows CreateEvent()
* + WaitForSingleObject(), but it is completely useless for live streams.
*
* 1. You must schedule all events before starting capture
* 2. The events are all fired exactly once
* 3. You cannot schedule new events while a capture is running
* 4. You cannot stop/schedule/start either
*
* This means you cannot use the API while doing live looped capture and we
* must resort to this.
*
* However, this is almost as efficient as event-based capture since it's ok
* to consistently overwait by a fixed amount; the extra bytes will just end
* up being used in the next call, and the extra latency will be constant. */
while (TRUE) {
hRes =
IDirectSoundCaptureBuffer_GetCurrentPosition (dsoundsrc->pDSBSecondary,
&dwCurrentCaptureCursor, NULL);
if (FAILED (hRes)) {
GST_DSOUND_UNLOCK (dsoundsrc);
return -1;
}
/* calculate the size of the buffer that's been captured while accounting
* for wrap-arounds */
if (dwCurrentCaptureCursor < dsoundsrc->current_circular_offset) {
dwBufferSize = dsoundsrc->buffer_size -
(dsoundsrc->current_circular_offset - dwCurrentCaptureCursor);
} else {
dwBufferSize =
dwCurrentCaptureCursor - dsoundsrc->current_circular_offset;
}
if (dwBufferSize >= length) {
/* Yay, we got all the data we need */
break;
} else {
GST_DEBUG_OBJECT (asrc, "not enough data, got %lu (want at least %u)",
dwBufferSize, length);
/* If we didn't get enough data, sleep for a proportionate time */
sleep_time_ms = gst_util_uint64_scale (dsoundsrc->latency_time,
length - dwBufferSize, length * 1000);
/* Make sure we don't run in a tight loop unnecessarily */
sleep_time_ms = MAX (sleep_time_ms, 10);
/* Sleep using gst_clock_id_wait() so that we can be interrupted */
sleep_until = gst_clock_get_time (dsoundsrc->system_clock) +
sleep_time_ms * GST_MSECOND;
/* Setup the clock id wait */
if (G_UNLIKELY (dsoundsrc->read_wait_clock_id == NULL ||
gst_clock_single_shot_id_reinit (dsoundsrc->system_clock,
dsoundsrc->read_wait_clock_id, sleep_until) == FALSE)) {
if (dsoundsrc->read_wait_clock_id != NULL)
gst_clock_id_unref (dsoundsrc->read_wait_clock_id);
dsoundsrc->read_wait_clock_id =
gst_clock_new_single_shot_id (dsoundsrc->system_clock, sleep_until);
}
clock_id = dsoundsrc->read_wait_clock_id;
dsoundsrc->reset_while_sleeping = FALSE;
GST_DEBUG_OBJECT (asrc, "waiting %" G_GUINT64_FORMAT "ms for more data",
sleep_time_ms);
GST_DSOUND_UNLOCK (dsoundsrc);
gst_clock_id_wait (clock_id, NULL);
GST_DSOUND_LOCK (dsoundsrc);
if (dsoundsrc->reset_while_sleeping == TRUE) {
GST_DEBUG_OBJECT (asrc, "reset while sleeping, cancelled read");
GST_DSOUND_UNLOCK (dsoundsrc);
return -1;
}
}
}
GST_DEBUG_OBJECT (asrc, "Got enough data: %lu bytes (wanted at least %u)",
dwBufferSize, length);
/* Lock the buffer and read only the first @length bytes. Keep the rest in
* the capture buffer for the next read. */
hRes = IDirectSoundCaptureBuffer_Lock (dsoundsrc->pDSBSecondary,
dsoundsrc->current_circular_offset,
length,
&pLockedBuffer1, &dwSizeBuffer1, &pLockedBuffer2, &dwSizeBuffer2, 0L);
/* NOTE: We now assume that dwSizeBuffer1 + dwSizeBuffer2 == length since the
* API is supposed to guarantee that */
/* Copy buffer data to another buffer */
if (hRes == DS_OK) {
memcpy (data, pLockedBuffer1, dwSizeBuffer1);
}
/* ...and if something is in another buffer */
if (pLockedBuffer2 != NULL) {
memcpy (((guchar *) data + dwSizeBuffer1), pLockedBuffer2, dwSizeBuffer2);
}
dsoundsrc->current_circular_offset += dwSizeBuffer1 + dwSizeBuffer2;
dsoundsrc->current_circular_offset %= dsoundsrc->buffer_size;
IDirectSoundCaptureBuffer_Unlock (dsoundsrc->pDSBSecondary,
pLockedBuffer1, dwSizeBuffer1, pLockedBuffer2, dwSizeBuffer2);
GST_DSOUND_UNLOCK (dsoundsrc);
/* We always read exactly @length data */
return length;
}
