static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
LPDWORD lpdwPlay, LPDWORD lpdwWrite)
{
IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
snd_pcm_uframes_t hw_pptr, hw_wptr;
snd_pcm_state_t state;
/* **** */
EnterCriticalSection(&This->pcm_crst);
if (!This->pcm)
{
FIXME("Bad pointer for pcm: %p\n", This->pcm);
LeaveCriticalSection(&This->pcm_crst);
return DSERR_GENERIC;
}
if (!lpdwPlay && !lpdwWrite)
CommitAll(This);
state = snd_pcm_state(This->pcm);
if (state != SND_PCM_STATE_PREPARED && state != SND_PCM_STATE_RUNNING)
{
CheckXRUN(This);
state = snd_pcm_state(This->pcm);
}
if (state == SND_PCM_STATE_RUNNING)
{
snd_pcm_uframes_t used = This->mmap_buflen_frames - snd_pcm_avail_update(This->pcm);
if (This->mmap_pos > used)
hw_pptr = This->mmap_pos - used;
else
hw_pptr = This->mmap_buflen_frames + This->mmap_pos - used;
hw_pptr %= This->mmap_buflen_frames;
TRACE("At position: %ld (%ld) - Used %ld\n", hw_pptr, This->mmap_pos, used);
}
else hw_pptr = This->mmap_pos;
hw_wptr = This->mmap_pos;
LeaveCriticalSection(&This->pcm_crst);
/* **** */
if (lpdwPlay)
*lpdwPlay = snd_pcm_frames_to_bytes(This->pcm, hw_pptr);
if (lpdwWrite)
*lpdwWrite = snd_pcm_frames_to_bytes(This->pcm, hw_wptr);
TRACE("hw_pptr=0x%08x, hw_wptr=0x%08x playpos=%d, writepos=%d\n", (unsigned int)hw_pptr, (unsigned int)hw_wptr, lpdwPlay?*lpdwPlay:-1, lpdwWrite?*lpdwWrite:-1);
return DS_OK;
}
static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetPosition(PIDSCDRIVERBUFFER iface, LPDWORD lpdwCappos, LPDWORD lpdwReadpos)
{
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
snd_pcm_uframes_t hw_pptr, hw_wptr;
EnterCriticalSection(&This->pcm_crst);
if (!This->pcm)
{
FIXME("Bad pointer for pcm: %p\n", This->pcm);
LeaveCriticalSection(&This->pcm_crst);
return DSERR_GENERIC;
}
if (snd_pcm_state(This->pcm) != SND_PCM_STATE_RUNNING)
{
CheckXRUN(This);
hw_pptr = This->mmap_pos;
}
else
{
/* FIXME: Unused at the moment */
snd_pcm_uframes_t used = CommitAll(This, FALSE);
if (This->mmap_pos > used)
hw_pptr = This->mmap_pos - used;
else
hw_pptr = This->mmap_buflen_frames - used + This->mmap_pos;
}
hw_wptr = This->mmap_pos;
if (lpdwCappos)
*lpdwCappos = realpos_to_fakepos(This, hw_pptr);
if (lpdwReadpos)
*lpdwReadpos = realpos_to_fakepos(This, hw_wptr);
LeaveCriticalSection(&This->pcm_crst);
TRACE("hw_pptr=%u, hw_wptr=%u playpos=%u(%p), writepos=%u(%p)\n", (unsigned int)hw_pptr, (unsigned int)hw_wptr, realpos_to_fakepos(This, hw_pptr), lpdwCappos, realpos_to_fakepos(This, hw_wptr), lpdwReadpos);
return DS_OK;
}