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winealsa: Add support for opening/closing dsound capture buffer.

This commit is contained in:
Maarten Lankhorst 2007-08-15 16:21:27 +02:00 committed by Alexandre Julliard
parent 23bc426e14
commit ea9b6b074c
1 changed files with 210 additions and 5 deletions
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215
dlls/winealsa.drv/dscapture.c
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@ -81,8 +81,85 @@ struct IDsCaptureDriverBufferImpl
CRITICAL_SECTION pcm_crst;
LPBYTE mmap_buffer, presented_buffer;
DWORD mmap_buflen_bytes, play_looping, mmap_ofs_bytes;
/* Note: snd_pcm_frames_to_bytes(This->pcm, mmap_buflen_frames) != mmap_buflen_bytes */
/* The actual buffer may differ in size from the wanted buffer size */
snd_pcm_t *pcm;
snd_pcm_hw_params_t *hw_params;
snd_pcm_sw_params_t *sw_params;
snd_pcm_uframes_t mmap_buflen_frames, mmap_pos;
};
/**
* Allocate the memory-mapped buffer for direct sound, and set up the
* callback.
*/
static int CreateMMAP(IDsCaptureDriverBufferImpl* pdbi)
{
snd_pcm_t *pcm = pdbi->pcm;
snd_pcm_format_t format;
snd_pcm_uframes_t frames, ofs, avail, psize, boundary;
unsigned int channels, bits_per_sample, bits_per_frame;
int err, mmap_mode;
const snd_pcm_channel_area_t *areas;
snd_pcm_hw_params_t *hw_params = pdbi->hw_params;
snd_pcm_sw_params_t *sw_params = pdbi->sw_params;
mmap_mode = snd_pcm_type(pcm);
if (mmap_mode == SND_PCM_TYPE_HW)
TRACE("mmap'd buffer is a direct hardware buffer.\n");
else if (mmap_mode == SND_PCM_TYPE_DMIX)
TRACE("mmap'd buffer is an ALSA dmix buffer\n");
else
TRACE("mmap'd buffer is an ALSA type %d buffer\n", mmap_mode);
err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
err = snd_pcm_hw_params_get_format(hw_params, &format);
err = snd_pcm_hw_params_get_buffer_size(hw_params, &frames);
err = snd_pcm_hw_params_get_channels(hw_params, &channels);
bits_per_sample = snd_pcm_format_physical_width(format);
bits_per_frame = bits_per_sample * channels;
if (TRACE_ON(dsalsa))
ALSA_TraceParameters(hw_params, NULL, FALSE);
TRACE("format=%s frames=%ld channels=%d bits_per_sample=%d bits_per_frame=%d\n",
snd_pcm_format_name(format), frames, channels, bits_per_sample, bits_per_frame);
pdbi->mmap_buflen_frames = frames;
snd_pcm_sw_params_current(pcm, sw_params);
snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 0);
snd_pcm_sw_params_get_boundary(sw_params, &boundary);
snd_pcm_sw_params_set_stop_threshold(pcm, sw_params, boundary);
snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, INT_MAX);
snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0);
snd_pcm_sw_params_set_avail_min(pcm, sw_params, 0);
snd_pcm_sw_params_set_xrun_mode(pcm, sw_params, SND_PCM_XRUN_NONE);
err = snd_pcm_sw_params(pcm, sw_params);
avail = snd_pcm_avail_update(pcm);
if (avail < 0)
{
ERR("No buffer is available: %s.\n", snd_strerror(avail));
return DSERR_GENERIC;
}
err = snd_pcm_mmap_begin(pcm, &areas, &ofs, &avail);
if ( err < 0 )
{
ERR("Can't map sound device for direct access: %s\n", snd_strerror(err));
return DSERR_GENERIC;
}
err = snd_pcm_mmap_commit(pcm, ofs, 0);
pdbi->mmap_buffer = areas->addr;
TRACE("created mmap buffer of %ld frames (%d bytes) at %p\n",
frames, pdbi->mmap_buflen_bytes, pdbi->mmap_buffer);
return DS_OK;
}
static HRESULT WINAPI IDsCaptureDriverBufferImpl_QueryInterface(PIDSCDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
{
/* IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface; */
@ -116,7 +193,12 @@ static ULONG WINAPI IDsCaptureDriverBufferImpl_Release(PIDSCDRIVERBUFFER iface)
This->pcm_crst.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->pcm_crst);
snd_pcm_drop(This->pcm);
snd_pcm_close(This->pcm);
This->pcm = NULL;
HeapFree(GetProcessHeap(), 0, This->presented_buffer);
HeapFree(GetProcessHeap(), 0, This->sw_params);
HeapFree(GetProcessHeap(), 0, This->hw_params);
HeapFree(GetProcessHeap(), 0, This);
return 0;
}
@ -156,13 +238,129 @@ static HRESULT WINAPI IDsCaptureDriverBufferImpl_Unlock(PIDSCDRIVERBUFFER iface,
static HRESULT WINAPI IDsCaptureDriverBufferImpl_SetFormat(PIDSCDRIVERBUFFER iface, LPWAVEFORMATEX pwfx)
{
FIXME("stub!\n");
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
WINE_WAVEDEV *wwi = &WInDev[This->drv->wDevID];
snd_pcm_t *pcm = NULL;
snd_pcm_hw_params_t *hw_params = This->hw_params;
snd_pcm_format_t format = -1;
snd_pcm_uframes_t buffer_size;
DWORD rate = pwfx->nSamplesPerSec;
int err=0;
TRACE("(%p, %p)\n", iface, pwfx);
switch (pwfx->wBitsPerSample)
{
case 8: format = SND_PCM_FORMAT_U8; break;
case 16: format = SND_PCM_FORMAT_S16_LE; break;
case 24: format = SND_PCM_FORMAT_S24_LE; break;
case 32: format = SND_PCM_FORMAT_S32_LE; break;
default: FIXME("Unsupported bpp: %d\n", pwfx->wBitsPerSample); return DSERR_GENERIC;
}
/* **** */
EnterCriticalSection(&This->pcm_crst);
err = snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
if (err < 0)
{
if (errno != EBUSY || !This->pcm)
{
/* **** */
LeaveCriticalSection(&This->pcm_crst);
WARN("Cannot open sound device: %s\n", snd_strerror(err));
return DSERR_GENERIC;
}
snd_pcm_drop(This->pcm);
snd_pcm_close(This->pcm);
This->pcm = NULL;
err = snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
if (err < 0)
{
/* **** */
LeaveCriticalSection(&This->pcm_crst);
WARN("Cannot open sound device: %s\n", snd_strerror(err));
return DSERR_BUFFERLOST;
}
}
/* Set some defaults */
snd_pcm_hw_params_any(pcm, hw_params);
err = snd_pcm_hw_params_set_channels(pcm, hw_params, pwfx->nChannels);
if (err < 0) { WARN("Could not set channels to %d\n", pwfx->nChannels); goto err; }
err = snd_pcm_hw_params_set_format(pcm, hw_params, format);
if (err < 0) { WARN("Could not set format to %d bpp\n", pwfx->wBitsPerSample); goto err; }
err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, NULL);
if (err < 0) { rate = pwfx->nSamplesPerSec; WARN("Could not set rate\n"); goto err; }
if (!ALSA_NearMatch(rate, pwfx->nSamplesPerSec))
{
WARN("Could not set sound rate to %d, but instead to %d\n", pwfx->nSamplesPerSec, rate);
pwfx->nSamplesPerSec = rate;
pwfx->nAvgBytesPerSec = rate * pwfx->nBlockAlign;
/* Let DirectSound detect this */
}
snd_pcm_hw_params_set_periods_integer(pcm, hw_params);
buffer_size = snd_pcm_bytes_to_frames(pcm, This->mmap_buflen_bytes);
snd_pcm_hw_params_set_buffer_size_near(pcm, hw_params, &buffer_size);
buffer_size = 5000;
snd_pcm_hw_params_set_period_time_near(pcm, hw_params, (unsigned int*)&buffer_size, NULL);
err = snd_pcm_hw_params(pcm, hw_params);
err = snd_pcm_sw_params(pcm, This->sw_params);
snd_pcm_prepare(pcm);
if (This->pcm)
{
snd_pcm_drop(This->pcm);
snd_pcm_close(This->pcm);
}
This->pcm = pcm;
snd_pcm_prepare(This->pcm);
CreateMMAP(This);
/* **** */
LeaveCriticalSection(&This->pcm_crst);
return S_OK;
err:
if (err < 0)
WARN("Failed to apply changes: %s\n", snd_strerror(err));
if (!This->pcm)
This->pcm = pcm;
else
snd_pcm_close(pcm);
if (This->pcm)
snd_pcm_hw_params_current(This->pcm, This->hw_params);
/* **** */
LeaveCriticalSection(&This->pcm_crst);
return DSERR_BADFORMAT;
}
static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetPosition(PIDSCDRIVERBUFFER iface, LPDWORD lpdwCappos, LPDWORD lpdwReadpos)
{
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
FIXME("stub!\n");
EnterCriticalSection(&This->pcm_crst);
if (!This->pcm)
{
FIXME("Bad pointer for pcm: %p\n", This->pcm);
LeaveCriticalSection(&This->pcm_crst);
return DSERR_GENERIC;
}
LeaveCriticalSection(&This->pcm_crst);
return DSERR_GENERIC;
}
@ -172,7 +370,7 @@ static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetStatus(PIDSCDRIVERBUFFER ifa
snd_pcm_state_t state;
TRACE("(%p,%p)\n",iface,lpdwStatus);
state = 0;
state = snd_pcm_state(This->pcm);
switch (state)
{
case SND_PCM_STATE_XRUN:
@ -196,6 +394,7 @@ static HRESULT WINAPI IDsCaptureDriverBufferImpl_Start(PIDSCDRIVERBUFFER iface,
/* **** */
EnterCriticalSection(&This->pcm_crst);
snd_pcm_start(This->pcm);
This->play_looping = !!(dwFlags & DSCBSTART_LOOPING);
if (!This->play_looping)
/* Not well supported because of the difference in ALSA size and DSOUND's notion of size
@ -214,6 +413,8 @@ static HRESULT WINAPI IDsCaptureDriverBufferImpl_Stop(PIDSCDRIVERBUFFER iface)
/* **** */
EnterCriticalSection(&This->pcm_crst);
This->play_looping = FALSE;
snd_pcm_drop(This->pcm);
snd_pcm_prepare(This->pcm);
/* **** */
LeaveCriticalSection(&This->pcm_crst);
return DS_OK;
@ -350,7 +551,6 @@ static HRESULT WINAPI IDsCaptureDriverImpl_CreateCaptureBuffer(PIDSCDRIVER iface
LPDWORD pdwcbBufferSize,
LPBYTE *ppbBuffer,
LPVOID *ppvObj)
{
{
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
IDsCaptureDriverBufferImpl** ippdsdb = (IDsCaptureDriverBufferImpl**)ppvObj;
@ -365,9 +565,13 @@ static HRESULT WINAPI IDsCaptureDriverImpl_CreateCaptureBuffer(PIDSCDRIVER iface
if (*ippdsdb == NULL)
return DSERR_OUTOFMEMORY;
(*ippdsdb)->hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
(*ippdsdb)->sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
(*ippdsdb)->presented_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *pdwcbBufferSize);
if (!(*ippdsdb)->presented_buffer)
if (!(*ippdsdb)->hw_params || !(*ippdsdb)->sw_params || !(*ippdsdb)->presented_buffer)
{
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->presented_buffer);
return DSERR_OUTOFMEMORY;
}
@ -393,11 +597,12 @@ static HRESULT WINAPI IDsCaptureDriverImpl_CreateCaptureBuffer(PIDSCDRIVER iface
err:
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->presented_buffer);
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
HeapFree(GetProcessHeap(), 0, *ippdsdb);
*ippdsdb = NULL;
return err;
}
}
static const IDsCaptureDriverVtbl dscdvt =
{