static HRESULT DSoundRender_SendSampleData(DSoundRenderImpl* This, const BYTE *data, DWORD size)
{
HRESULT hr = S_OK;
LPBYTE lpbuf1 = NULL;
LPBYTE lpbuf2 = NULL;
DWORD dwsize1 = 0;
DWORD dwsize2 = 0;
DWORD size2;
DWORD play_pos,buf_free;
do {
hr = DSoundRender_GetPos(This, &play_pos, NULL);
if (hr != DS_OK)
{
ERR("GetPos returned error: %x\n", hr);
break;
}
if (This->write_pos <= play_pos)
buf_free = play_pos-This->write_pos;
else
buf_free = This->buf_size - This->write_pos + play_pos;
/* Wait for enough of the buffer to empty before filling it */
if(buf_free < This->buf_size/4)
{
Sleep(50);
continue;
}
size2 = min(buf_free, size);
hr = IDirectSoundBuffer_Lock(This->dsbuffer, This->write_pos, size2, (LPVOID *)&lpbuf1, &dwsize1, (LPVOID *)&lpbuf2, &dwsize2, 0);
if (hr != DS_OK) {
ERR("Unable to lock sound buffer! (%x)\n", hr);
break;
}
/* TRACE("write_pos=%d, size=%d, sz1=%d, sz2=%d\n", This->write_pos, size2, dwsize1, dwsize2); */
memcpy(lpbuf1, data, dwsize1);
if (dwsize2)
memcpy(lpbuf2, data + dwsize1, dwsize2);
hr = IDirectSoundBuffer_Unlock(This->dsbuffer, lpbuf1, dwsize1, lpbuf2, dwsize2);
if (hr != DS_OK)
ERR("Unable to unlock sound buffer! (%x)\n", hr);
size -= dwsize1 + dwsize2;
data += dwsize1 + dwsize2;
This->write_pos += dwsize1 + dwsize2;
if (This->write_pos >= This->buf_size)
{
This->write_pos -= This->buf_size;
This->write_loops++;
}
} while (size && This->state == State_Running);
return hr;
}
/*** IReferenceClock methods ***/
static HRESULT WINAPI ReferenceClock_GetTime(IReferenceClock *iface,
REFERENCE_TIME *pTime)
{
ICOM_THIS_MULTI(DSoundRenderImpl, IReferenceClock_vtbl, iface);
HRESULT hr = E_FAIL;
DWORD play_pos;
TRACE("(%p/%p)->(%p)\n", This, iface, pTime);
if (This->dsbuffer)
hr = DSoundRender_GetPos(This, &play_pos, pTime);
if (FAILED(hr))
ERR("Could not get reference time (%x)!\n", hr);
return hr;
}
static HRESULT DSoundRender_SendSampleData(DSoundRenderImpl* This, const BYTE *data, DWORD size)
{
HRESULT hr = S_OK;
LPBYTE lpbuf1 = NULL;
LPBYTE lpbuf2 = NULL;
DWORD dwsize1 = 0;
DWORD dwsize2 = 0;
DWORD size2;
DWORD play_pos,buf_free;
do {
hr = DSoundRender_GetPos(This, &play_pos, NULL);
if (hr != DS_OK)
{
ERR("GetPos returned error: %x\n", hr);
break;
}
if (This->write_pos <= play_pos)
buf_free = play_pos-This->write_pos;
else
buf_free = This->buf_size - This->write_pos + play_pos;
/* Wait for enough of the buffer to empty before filling it */
if(buf_free < This->buf_size/20)
{
DWORD ret;
This->in_loop = 1;
LeaveCriticalSection(&This->filter.csFilter);
ret = WaitForSingleObject(This->blocked, 50);
if (ret != WAIT_TIMEOUT)
ERR("%x\n", ret);
EnterCriticalSection(&This->filter.csFilter);
This->in_loop = 0;
if (This->pInputPin->flushing)
return VFW_E_WRONG_STATE;
if (This->filter.state == State_Stopped)
return VFW_E_WRONG_STATE;
continue;
}
size2 = min(buf_free, size);
hr = IDirectSoundBuffer_Lock(This->dsbuffer, This->write_pos, size2, (LPVOID *)&lpbuf1, &dwsize1, (LPVOID *)&lpbuf2, &dwsize2, 0);
if (hr != DS_OK) {
ERR("Unable to lock sound buffer! (%x)\n", hr);
break;
}
/* TRACE("write_pos=%d, size=%d, sz1=%d, sz2=%d\n", This->write_pos, size2, dwsize1, dwsize2); */
memcpy(lpbuf1, data, dwsize1);
if (dwsize2)
memcpy(lpbuf2, data + dwsize1, dwsize2);
hr = IDirectSoundBuffer_Unlock(This->dsbuffer, lpbuf1, dwsize1, lpbuf2, dwsize2);
if (hr != DS_OK)
ERR("Unable to unlock sound buffer! (%x)\n", hr);
size -= dwsize1 + dwsize2;
data += dwsize1 + dwsize2;
This->write_pos += dwsize1 + dwsize2;
if (This->write_pos >= This->buf_size)
{
This->write_pos -= This->buf_size;
This->write_loops++;
}
} while (size && This->filter.state == State_Running);
return hr;
}
