int setparams_bufsize(snd_pcm_t *handle,
snd_pcm_hw_params_t *params,
snd_pcm_hw_params_t *tparams,
snd_pcm_uframes_t bufsize,
const char *id)
{
int err;
snd_pcm_uframes_t periodsize;
snd_pcm_hw_params_copy(params, tparams);
periodsize = bufsize * 2;
err = snd_pcm_hw_params_set_buffer_size_near(handle, params, &periodsize);
if (err < 0) {
printf("Unable to set buffer size %li for %s: %s\n", bufsize * 2, id, snd_strerror(err));
return err;
}
if (period_size > 0)
periodsize = period_size;
else
periodsize /= 2;
err = snd_pcm_hw_params_set_period_size_near(handle, params, &periodsize, 0);
if (err < 0) {
printf("Unable to set period size %li for %s: %s\n", periodsize, id, snd_strerror(err));
return err;
}
return 0;
}
bool CAESinkALSA::InitializeHW(AEAudioFormat &format)
{
snd_pcm_hw_params_t *hw_params;
snd_pcm_hw_params_alloca(&hw_params);
memset(hw_params, 0, snd_pcm_hw_params_sizeof());
snd_pcm_hw_params_any(m_pcm, hw_params);
snd_pcm_hw_params_set_access(m_pcm, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
unsigned int sampleRate = format.m_sampleRate;
unsigned int channelCount = format.m_channelLayout.Count();
snd_pcm_hw_params_set_rate_near (m_pcm, hw_params, &sampleRate, NULL);
snd_pcm_hw_params_set_channels_near(m_pcm, hw_params, &channelCount);
/* ensure we opened X channels or more */
if (format.m_channelLayout.Count() > channelCount)
{
CLog::Log(LOGINFO, "CAESinkALSA::InitializeHW - Unable to open the required number of channels");
}
/* update the channelLayout to what we managed to open */
format.m_channelLayout.Reset();
for (unsigned int i = 0; i < channelCount; ++i)
format.m_channelLayout += ALSAChannelMap[i];
snd_pcm_format_t fmt = AEFormatToALSAFormat(format.m_dataFormat);
if (fmt == SND_PCM_FORMAT_UNKNOWN)
{
/* if we dont support the requested format, fallback to float */
format.m_dataFormat = AE_FMT_FLOAT;
fmt = SND_PCM_FORMAT_FLOAT;
}
/* try the data format */
if (snd_pcm_hw_params_set_format(m_pcm, hw_params, fmt) < 0)
{
/* if the chosen format is not supported, try each one in decending order */
CLog::Log(LOGINFO, "CAESinkALSA::InitializeHW - Your hardware does not support %s, trying other formats", CAEUtil::DataFormatToStr(format.m_dataFormat));
for (enum AEDataFormat i = AE_FMT_MAX; i > AE_FMT_INVALID; i = (enum AEDataFormat)((int)i - 1))
{
if (AE_IS_RAW(i) || i == AE_FMT_MAX)
continue;
if (m_passthrough && i != AE_FMT_S16BE && i != AE_FMT_S16LE)
continue;
fmt = AEFormatToALSAFormat(i);
if (fmt == SND_PCM_FORMAT_UNKNOWN || snd_pcm_hw_params_set_format(m_pcm, hw_params, fmt) < 0)
{
fmt = SND_PCM_FORMAT_UNKNOWN;
continue;
}
int fmtBits = CAEUtil::DataFormatToBits(i);
int bits = snd_pcm_hw_params_get_sbits(hw_params);
if (bits != fmtBits)
{
/* if we opened in 32bit and only have 24bits, pack into 24 */
if (fmtBits == 32 && bits == 24)
i = AE_FMT_S24NE4;
else
continue;
}
/* record that the format fell back to X */
format.m_dataFormat = i;
CLog::Log(LOGINFO, "CAESinkALSA::InitializeHW - Using data format %s", CAEUtil::DataFormatToStr(format.m_dataFormat));
break;
}
/* if we failed to find a valid output format */
if (fmt == SND_PCM_FORMAT_UNKNOWN)
{
CLog::Log(LOGERROR, "CAESinkALSA::InitializeHW - Unable to find a suitable output format");
return false;
}
}
snd_pcm_uframes_t periodSize, bufferSize;
snd_pcm_hw_params_get_buffer_size_max(hw_params, &bufferSize);
snd_pcm_hw_params_get_period_size_max(hw_params, &periodSize, NULL);
/*
We want to make sure, that we have max 200 ms Buffer with
a periodSize of approx 50 ms. Choosing a higher bufferSize
will cause problems with menu sounds. Buffer will be increased
after those are fixed.
*/
periodSize = std::min(periodSize, (snd_pcm_uframes_t) sampleRate / 20);
bufferSize = std::min(bufferSize, (snd_pcm_uframes_t) sampleRate / 5);
/*
According to upstream we should set buffer size first - so make sure it is always at least
4x period size to not get underruns (some systems seem to have issues with only 2 periods)
*/
periodSize = std::min(periodSize, bufferSize / 4);
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Request: periodSize %lu, bufferSize %lu", periodSize, bufferSize);
snd_pcm_hw_params_t *hw_params_copy;
snd_pcm_hw_params_alloca(&hw_params_copy);
snd_pcm_hw_params_copy(hw_params_copy, hw_params); // copy what we have and is already working
// Make sure to not initialize too large to not cause underruns
snd_pcm_uframes_t periodSizeMax = bufferSize / 3;
if(snd_pcm_hw_params_set_period_size_max(m_pcm, hw_params_copy, &periodSizeMax, NULL) != 0)
{
snd_pcm_hw_params_copy(hw_params_copy, hw_params); // restore working copy
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Request: Failed to limit periodSize to %lu", periodSizeMax);
}
// first trying bufferSize, PeriodSize
// for more info see here:
// http://mailman.alsa-project.org/pipermail/alsa-devel/2009-September/021069.html
// the last three tries are done as within pulseaudio
// backup periodSize and bufferSize first. Restore them after every failed try
snd_pcm_uframes_t periodSizeTemp, bufferSizeTemp;
periodSizeTemp = periodSize;
bufferSizeTemp = bufferSize;
if (snd_pcm_hw_params_set_buffer_size_near(m_pcm, hw_params_copy, &bufferSize) != 0
|| snd_pcm_hw_params_set_period_size_near(m_pcm, hw_params_copy, &periodSize, NULL) != 0
|| snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
bufferSize = bufferSizeTemp;
periodSize = periodSizeTemp;
// retry with PeriodSize, bufferSize
snd_pcm_hw_params_copy(hw_params_copy, hw_params); // restore working copy
if (snd_pcm_hw_params_set_period_size_near(m_pcm, hw_params_copy, &periodSize, NULL) != 0
|| snd_pcm_hw_params_set_buffer_size_near(m_pcm, hw_params_copy, &bufferSize) != 0
|| snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
// try only periodSize
periodSize = periodSizeTemp;
snd_pcm_hw_params_copy(hw_params_copy, hw_params); // restore working copy
if(snd_pcm_hw_params_set_period_size_near(m_pcm, hw_params_copy, &periodSize, NULL) != 0
|| snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
// try only BufferSize
bufferSize = bufferSizeTemp;
snd_pcm_hw_params_copy(hw_params_copy, hw_params); // restory working copy
if (snd_pcm_hw_params_set_buffer_size_near(m_pcm, hw_params_copy, &bufferSize) != 0
|| snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
// set default that Alsa would choose
CLog::Log(LOGWARNING, "CAESinkAlsa::IntializeHW - Using default alsa values - set failed");
if (snd_pcm_hw_params(m_pcm, hw_params) != 0)
{
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Could not init a valid sink");
return false;
}
}
}
// reread values when alsa default was kept
snd_pcm_get_params(m_pcm, &bufferSize, &periodSize);
}
}
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Got: periodSize %lu, bufferSize %lu", periodSize, bufferSize);
/* set the format parameters */
format.m_sampleRate = sampleRate;
format.m_frames = periodSize;
format.m_frameSamples = periodSize * format.m_channelLayout.Count();
format.m_frameSize = snd_pcm_frames_to_bytes(m_pcm, 1);
m_bufferSize = (unsigned int)bufferSize;
m_timeout = std::ceil((double)(bufferSize * 1000) / (double)sampleRate);
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Setting timeout to %d ms", m_timeout);
return true;
}
bool CAESinkALSA::InitializeHW(AEAudioFormat &format)
{
snd_pcm_hw_params_t *hw_params;
snd_pcm_hw_params_alloca(&hw_params);
memset(hw_params, 0, snd_pcm_hw_params_sizeof());
snd_pcm_hw_params_any(m_pcm, hw_params);
snd_pcm_hw_params_set_access(m_pcm, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
unsigned int sampleRate = format.m_sampleRate;
unsigned int channelCount = format.m_channelLayout.Count();
snd_pcm_hw_params_set_rate_near (m_pcm, hw_params, &sampleRate, NULL);
snd_pcm_hw_params_set_channels_near(m_pcm, hw_params, &channelCount);
/* ensure we opened X channels or more */
if (format.m_channelLayout.Count() > channelCount)
{
CLog::Log(LOGERROR, "CAESinkALSA::InitializeHW - Unable to open the required number of channels");
return false;
}
/* update the channelLayout to what we managed to open */
format.m_channelLayout.Reset();
for (unsigned int i = 0; i < channelCount; ++i)
format.m_channelLayout += ALSAChannelMap[i];
snd_pcm_format_t fmt = AEFormatToALSAFormat(format.m_dataFormat);
if (fmt == SND_PCM_FORMAT_UNKNOWN)
{
/* if we dont support the requested format, fallback to float */
format.m_dataFormat = AE_FMT_FLOAT;
fmt = SND_PCM_FORMAT_FLOAT;
}
/* try the data format */
if (snd_pcm_hw_params_set_format(m_pcm, hw_params, fmt) < 0)
{
/* if the chosen format is not supported, try each one in decending order */
CLog::Log(LOGINFO, "CAESinkALSA::InitializeHW - Your hardware does not support %s, trying other formats", CAEUtil::DataFormatToStr(format.m_dataFormat));
for (enum AEDataFormat i = AE_FMT_MAX; i > AE_FMT_INVALID; i = (enum AEDataFormat)((int)i - 1))
{
if (AE_IS_RAW(i) || i == AE_FMT_MAX)
continue;
if (m_passthrough && i != AE_FMT_S16BE && i != AE_FMT_S16LE)
continue;
fmt = AEFormatToALSAFormat(i);
if (fmt == SND_PCM_FORMAT_UNKNOWN || snd_pcm_hw_params_set_format(m_pcm, hw_params, fmt) < 0)
{
fmt = SND_PCM_FORMAT_UNKNOWN;
continue;
}
int fmtBits = CAEUtil::DataFormatToBits(i);
int bits = snd_pcm_hw_params_get_sbits(hw_params);
if (bits != fmtBits)
{
/* if we opened in 32bit and only have 24bits, pack into 24 */
if (fmtBits == 32 && bits == 24)
i = AE_FMT_S24NE4;
else
continue;
}
/* record that the format fell back to X */
format.m_dataFormat = i;
CLog::Log(LOGINFO, "CAESinkALSA::InitializeHW - Using data format %s", CAEUtil::DataFormatToStr(format.m_dataFormat));
break;
}
/* if we failed to find a valid output format */
if (fmt == SND_PCM_FORMAT_UNKNOWN)
{
CLog::Log(LOGERROR, "CAESinkALSA::InitializeHW - Unable to find a suitable output format");
return false;
}
}
unsigned int periods;
snd_pcm_uframes_t periodSize, bufferSize;
snd_pcm_hw_params_get_buffer_size_max(hw_params, &bufferSize);
bufferSize = std::min(bufferSize, (snd_pcm_uframes_t)8192);
periodSize = bufferSize / ALSA_PERIODS;
periods = ALSA_PERIODS;
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Request: periodSize %lu, periods %u, bufferSize %lu", periodSize, periods, bufferSize);
/* work on a copy of the hw params */
snd_pcm_hw_params_t *hw_params_copy;
snd_pcm_hw_params_alloca(&hw_params_copy);
/* try to set the buffer size then the period size */
snd_pcm_hw_params_copy(hw_params_copy, hw_params);
snd_pcm_hw_params_set_buffer_size_near(m_pcm, hw_params_copy, &bufferSize);
snd_pcm_hw_params_set_period_size_near(m_pcm, hw_params_copy, &periodSize, NULL);
snd_pcm_hw_params_set_periods_near (m_pcm, hw_params_copy, &periods , NULL);
if (snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
/* try to set the period size then the buffer size */
snd_pcm_hw_params_copy(hw_params_copy, hw_params);
snd_pcm_hw_params_set_period_size_near(m_pcm, hw_params_copy, &periodSize, NULL);
snd_pcm_hw_params_set_buffer_size_near(m_pcm, hw_params_copy, &bufferSize);
snd_pcm_hw_params_set_periods_near (m_pcm, hw_params_copy, &periods , NULL);
if (snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
/* try to just set the buffer size */
snd_pcm_hw_params_copy(hw_params_copy, hw_params);
snd_pcm_hw_params_set_buffer_size_near(m_pcm, hw_params_copy, &bufferSize);
snd_pcm_hw_params_set_periods_near (m_pcm, hw_params_copy, &periods , NULL);
if (snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
/* try to just set the period size */
snd_pcm_hw_params_copy(hw_params_copy, hw_params);
snd_pcm_hw_params_set_period_size_near(m_pcm, hw_params_copy, &periodSize, NULL);
snd_pcm_hw_params_set_periods_near (m_pcm, hw_params_copy, &periods , NULL);
if (snd_pcm_hw_params(m_pcm, hw_params_copy) != 0)
{
CLog::Log(LOGERROR, "CAESinkALSA::InitializeHW - Failed to set the parameters");
return false;
}
}
}
}
snd_pcm_hw_params_get_period_size(hw_params_copy, &periodSize, NULL);
snd_pcm_hw_params_get_buffer_size(hw_params_copy, &bufferSize);
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Got: periodSize %lu, periods %u, bufferSize %lu", periodSize, periods, bufferSize);
/* set the format parameters */
format.m_sampleRate = sampleRate;
format.m_frames = periodSize;
format.m_frameSamples = periodSize * format.m_channelLayout.Count();
format.m_frameSize = snd_pcm_frames_to_bytes(m_pcm, 1);
m_bufferSize = (unsigned int)bufferSize;
m_timeout = std::ceil((double)(bufferSize * 1000) / (double)sampleRate);
CLog::Log(LOGDEBUG, "CAESinkALSA::InitializeHW - Setting timeout to %d ms", m_timeout);
return true;
}
/**************************************************************************
* widOpen [internal]
*/
static DWORD widOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
{
WINE_WAVEDEV* wwi;
snd_pcm_hw_params_t * hw_params;
snd_pcm_sw_params_t * sw_params;
snd_pcm_access_t access;
snd_pcm_format_t format;
unsigned int rate;
unsigned int buffer_time = 500000;
unsigned int period_time = 10000;
snd_pcm_uframes_t buffer_size;
snd_pcm_uframes_t period_size;
int flags;
snd_pcm_t * pcm;
int err;
int dir;
DWORD ret;
/* JPW TODO - review this code */
TRACE("(%u, %p, %08X);\n", wDevID, lpDesc, dwFlags);
if (lpDesc == NULL) {
WARN("Invalid Parameter !\n");
return MMSYSERR_INVALPARAM;
}
if (wDevID >= ALSA_WidNumDevs) {
TRACE("Requested device %d, but only %d are known!\n", wDevID, ALSA_WidNumDevs);
return MMSYSERR_BADDEVICEID;
}
/* only PCM format is supported so far... */
if (!ALSA_supportedFormat(lpDesc->lpFormat)) {
WARN("Bad format: tag=%04X nChannels=%d nSamplesPerSec=%d !\n",
lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
lpDesc->lpFormat->nSamplesPerSec);
return WAVERR_BADFORMAT;
}
if (dwFlags & WAVE_FORMAT_QUERY) {
TRACE("Query format: tag=%04X nChannels=%d nSamplesPerSec=%d !\n",
lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
lpDesc->lpFormat->nSamplesPerSec);
return MMSYSERR_NOERROR;
}
wwi = &WInDev[wDevID];
if (wwi->pcm != NULL) {
WARN("already allocated\n");
return MMSYSERR_ALLOCATED;
}
wwi->pcm = 0;
flags = SND_PCM_NONBLOCK;
if ( (err=snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, flags)) < 0 )
{
ERR("Error open: %s\n", snd_strerror(err));
return MMSYSERR_NOTENABLED;
}
wwi->wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);
wwi->waveDesc = *lpDesc;
ALSA_copyFormat(lpDesc->lpFormat, &wwi->format);
if (wwi->format.Format.wBitsPerSample == 0) {
WARN("Resetting zeroed wBitsPerSample\n");
wwi->format.Format.wBitsPerSample = 8 *
(wwi->format.Format.nAvgBytesPerSec /
wwi->format.Format.nSamplesPerSec) /
wwi->format.Format.nChannels;
}
hw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
sw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof() );
snd_pcm_hw_params_any(pcm, hw_params);
#define EXIT_ON_ERROR(f,e,txt) do \
{ \
int err; \
if ( (err = (f) ) < 0) \
{ \
WARN(txt ": %s\n", snd_strerror(err)); \
ret = (e); \
goto error; \
} \
} while(0)
access = SND_PCM_ACCESS_MMAP_INTERLEAVED;
if ( ( err = snd_pcm_hw_params_set_access(pcm, hw_params, access ) ) < 0) {
WARN("mmap not available. switching to standard write.\n");
access = SND_PCM_ACCESS_RW_INTERLEAVED;
EXIT_ON_ERROR( snd_pcm_hw_params_set_access(pcm, hw_params, access ), MMSYSERR_INVALPARAM, "unable to set access for playback");
wwi->read = snd_pcm_readi;
}
else
wwi->read = snd_pcm_mmap_readi;
EXIT_ON_ERROR( snd_pcm_hw_params_set_channels(pcm, hw_params, wwi->format.Format.nChannels), WAVERR_BADFORMAT, "unable to set required channels");
if ((wwi->format.Format.wFormatTag == WAVE_FORMAT_PCM) ||
((wwi->format.Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE) &&
IsEqualGUID(&wwi->format.SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))) {
format = (wwi->format.Format.wBitsPerSample == 8) ? SND_PCM_FORMAT_U8 :
(wwi->format.Format.wBitsPerSample == 16) ? SND_PCM_FORMAT_S16_LE :
(wwi->format.Format.wBitsPerSample == 24) ? SND_PCM_FORMAT_S24_3LE :
(wwi->format.Format.wBitsPerSample == 32) ? SND_PCM_FORMAT_S32_LE : -1;
} else if ((wwi->format.Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE) &&
IsEqualGUID(&wwi->format.SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)){
format = (wwi->format.Format.wBitsPerSample == 32) ? SND_PCM_FORMAT_FLOAT_LE : -1;
} else if (wwi->format.Format.wFormatTag == WAVE_FORMAT_MULAW) {
FIXME("unimplemented format: WAVE_FORMAT_MULAW\n");
ret = WAVERR_BADFORMAT;
goto error;
} else if (wwi->format.Format.wFormatTag == WAVE_FORMAT_ALAW) {
FIXME("unimplemented format: WAVE_FORMAT_ALAW\n");
ret = WAVERR_BADFORMAT;
goto error;
} else if (wwi->format.Format.wFormatTag == WAVE_FORMAT_ADPCM) {
FIXME("unimplemented format: WAVE_FORMAT_ADPCM\n");
ret = WAVERR_BADFORMAT;
goto error;
} else {
ERR("invalid format: %0x04x\n", wwi->format.Format.wFormatTag);
ret = WAVERR_BADFORMAT;
goto error;
}
EXIT_ON_ERROR( snd_pcm_hw_params_set_format(pcm, hw_params, format), WAVERR_BADFORMAT, "unable to set required format");
rate = wwi->format.Format.nSamplesPerSec;
dir = 0;
err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, &dir);
if (err < 0) {
WARN("Rate %d Hz not available for playback: %s\n", wwi->format.Format.nSamplesPerSec, snd_strerror(rate));
ret = WAVERR_BADFORMAT;
goto error;
}
if (!ALSA_NearMatch(rate, wwi->format.Format.nSamplesPerSec)) {
WARN("Rate doesn't match (requested %d Hz, got %d Hz)\n", wwi->format.Format.nSamplesPerSec, rate);
ret = WAVERR_BADFORMAT;
goto error;
}
dir=0;
EXIT_ON_ERROR( snd_pcm_hw_params_set_buffer_time_near(pcm, hw_params, &buffer_time, &dir), MMSYSERR_INVALPARAM, "unable to set buffer time");
dir=0;
EXIT_ON_ERROR( snd_pcm_hw_params_set_period_time_near(pcm, hw_params, &period_time, &dir), MMSYSERR_INVALPARAM, "unable to set period time");
EXIT_ON_ERROR( snd_pcm_hw_params(pcm, hw_params), MMSYSERR_INVALPARAM, "unable to set hw params for playback");
dir=0;
err = snd_pcm_hw_params_get_period_size(hw_params, &period_size, &dir);
err = snd_pcm_hw_params_get_buffer_size(hw_params, &buffer_size);
snd_pcm_sw_params_current(pcm, sw_params);
EXIT_ON_ERROR( snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 1), MMSYSERR_ERROR, "unable to set start threshold");
EXIT_ON_ERROR( snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0), MMSYSERR_ERROR, "unable to set silence size");
EXIT_ON_ERROR( snd_pcm_sw_params_set_avail_min(pcm, sw_params, period_size), MMSYSERR_ERROR, "unable to set avail min");
EXIT_ON_ERROR( snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, 0), MMSYSERR_ERROR, "unable to set silence threshold");
EXIT_ON_ERROR( snd_pcm_sw_params(pcm, sw_params), MMSYSERR_ERROR, "unable to set sw params for playback");
#undef EXIT_ON_ERROR
snd_pcm_prepare(pcm);
if (TRACE_ON(wave))
ALSA_TraceParameters(hw_params, sw_params, FALSE);
/* now, we can save all required data for later use... */
if ( wwi->hw_params )
snd_pcm_hw_params_free(wwi->hw_params);
snd_pcm_hw_params_malloc(&(wwi->hw_params));
snd_pcm_hw_params_copy(wwi->hw_params, hw_params);
wwi->dwBufferSize = snd_pcm_frames_to_bytes(pcm, buffer_size);
wwi->lpQueuePtr = wwi->lpPlayPtr = wwi->lpLoopPtr = NULL;
wwi->pcm = pcm;
ALSA_InitRingMessage(&wwi->msgRing);
wwi->dwPeriodSize = snd_pcm_frames_to_bytes(pcm, period_size);
TRACE("dwPeriodSize=%u\n", wwi->dwPeriodSize);
TRACE("wBitsPerSample=%u, nAvgBytesPerSec=%u, nSamplesPerSec=%u, nChannels=%u nBlockAlign=%u!\n",
wwi->format.Format.wBitsPerSample, wwi->format.Format.nAvgBytesPerSec,
wwi->format.Format.nSamplesPerSec, wwi->format.Format.nChannels,
wwi->format.Format.nBlockAlign);
wwi->hStartUpEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
wwi->hThread = CreateThread(NULL, 0, widRecorder, (LPVOID)(DWORD_PTR)wDevID, 0, &(wwi->dwThreadID));
if (wwi->hThread)
SetThreadPriority(wwi->hThread, THREAD_PRIORITY_TIME_CRITICAL);
WaitForSingleObject(wwi->hStartUpEvent, INFINITE);
CloseHandle(wwi->hStartUpEvent);
wwi->hStartUpEvent = INVALID_HANDLE_VALUE;
HeapFree( GetProcessHeap(), 0, hw_params );
HeapFree( GetProcessHeap(), 0, sw_params );
return widNotifyClient(wwi, WIM_OPEN, 0L, 0L);
error:
snd_pcm_close(pcm);
HeapFree( GetProcessHeap(), 0, hw_params );
HeapFree( GetProcessHeap(), 0, sw_params );
return ret;
}