static ALCboolean android_reset_playback(ALCdevice *device)
{
AndroidData* data = (AndroidData*)device->ExtraData;
device->FmtChans = ChannelsFromDevFmt(device->FmtChans) >= 2 ? DevFmtStereo : DevFmtMono;
SetDefaultChannelOrder(device);
return ALC_TRUE;
}
static ALCboolean android_reset_playback(ALCdevice *device)
{
g_device = device;
AndroidData* data = (AndroidData*)device->ExtraData;
device->FmtType = DevFmtShort;
device->FmtChans = DevFmtStereo;
SetDefaultChannelOrder(device);
g_bufferLength = device->UpdateSize;
g_bufferCount = device->NumUpdates;
g_sampleRate = device->Frequency;
g_mixerRunning = 1;
return ALC_TRUE;
}
static ALCboolean android_reset_playback(ALCdevice *device)
{
AndroidData* data = (AndroidData*)device->ExtraData;
if (aluChannelsFromFormat(device->Format) >= 2)
{
device->Format = aluBytesFromFormat(device->Format) >= 2 ? AL_FORMAT_STEREO16 : AL_FORMAT_STEREO8;
}
else
{
device->Format = aluBytesFromFormat(device->Format) >= 2 ? AL_FORMAT_MONO16 : AL_FORMAT_MONO8;
}
SetDefaultChannelOrder(device);
data->running = 1;
pthread_create(&data->thread, NULL, thread_function, device);
return ALC_TRUE;
}
static ALCboolean pa_reset_playback(ALCdevice *device)
{
pa_data *data = (pa_data*)device->ExtraData;
const PaStreamInfo *streamInfo;
streamInfo = Pa_GetStreamInfo(data->stream);
device->Frequency = streamInfo->sampleRate;
device->UpdateSize = data->update_size;
if(data->params.sampleFormat == paInt8)
device->FmtType = DevFmtByte;
else if(data->params.sampleFormat == paUInt8)
device->FmtType = DevFmtUByte;
else if(data->params.sampleFormat == paInt16)
device->FmtType = DevFmtShort;
else if(data->params.sampleFormat == paInt32)
device->FmtType = DevFmtInt;
else if(data->params.sampleFormat == paFloat32)
device->FmtType = DevFmtFloat;
else
{
ERR("Unexpected sample format: 0x%lx\n", data->params.sampleFormat);
return ALC_FALSE;
}
if(data->params.channelCount == 2)
device->FmtChans = DevFmtStereo;
else if(data->params.channelCount == 1)
device->FmtChans = DevFmtMono;
else
{
ERR("Unexpected channel count: %u\n", data->params.channelCount);
return ALC_FALSE;
}
SetDefaultChannelOrder(device);
return ALC_TRUE;
}
static ALCboolean oss_reset_playback(ALCdevice *device)
{
oss_data *data = (oss_data*)device->ExtraData;
int numFragmentsLogSize;
int log2FragmentSize;
unsigned int periods;
audio_buf_info info;
ALuint frameSize;
int numChannels;
int ossFormat;
int ossSpeed;
char *err;
switch(device->FmtType)
{
case DevFmtByte:
ossFormat = AFMT_S8;
break;
case DevFmtUByte:
ossFormat = AFMT_U8;
break;
case DevFmtUShort:
case DevFmtInt:
case DevFmtUInt:
case DevFmtFloat:
device->FmtType = DevFmtShort;
/* fall-through */
case DevFmtShort:
ossFormat = AFMT_S16_NE;
break;
}
periods = device->NumUpdates;
numChannels = ChannelsFromDevFmt(device->FmtChans);
frameSize = numChannels * BytesFromDevFmt(device->FmtType);
ossSpeed = device->Frequency;
log2FragmentSize = log2i(device->UpdateSize * frameSize);
/* according to the OSS spec, 16 bytes are the minimum */
if (log2FragmentSize < 4)
log2FragmentSize = 4;
/* Subtract one period since the temp mixing buffer counts as one. Still
* need at least two on the card, though. */
if(periods > 2) periods--;
numFragmentsLogSize = (periods << 16) | log2FragmentSize;
#define CHECKERR(func) if((func) < 0) { \
err = #func; \
goto err; \
}
/* Don't fail if SETFRAGMENT fails. We can handle just about anything
* that's reported back via GETOSPACE */
ioctl(data->fd, SNDCTL_DSP_SETFRAGMENT, &numFragmentsLogSize);
CHECKERR(ioctl(data->fd, SNDCTL_DSP_SETFMT, &ossFormat));
CHECKERR(ioctl(data->fd, SNDCTL_DSP_CHANNELS, &numChannels));
CHECKERR(ioctl(data->fd, SNDCTL_DSP_SPEED, &ossSpeed));
CHECKERR(ioctl(data->fd, SNDCTL_DSP_GETOSPACE, &info));
if(0)
{
err:
ERR("%s failed: %s\n", err, strerror(errno));
return ALC_FALSE;
}
#undef CHECKERR
if((int)ChannelsFromDevFmt(device->FmtChans) != numChannels)
{
ERR("Failed to set %s, got %d channels instead\n", DevFmtChannelsString(device->FmtChans), numChannels);
return ALC_FALSE;
}
if(!((ossFormat == AFMT_S8 && device->FmtType == DevFmtByte) ||
(ossFormat == AFMT_U8 && device->FmtType == DevFmtUByte) ||
(ossFormat == AFMT_S16_NE && device->FmtType == DevFmtShort)))
{
ERR("Failed to set %s samples, got OSS format %#x\n", DevFmtTypeString(device->FmtType), ossFormat);
return ALC_FALSE;
}
device->Frequency = ossSpeed;
device->UpdateSize = info.fragsize / frameSize;
device->NumUpdates = info.fragments + 1;
SetDefaultChannelOrder(device);
return ALC_TRUE;
}
static ALCboolean sndio_reset_playback(ALCdevice *device)
{
sndio_data *data = device->ExtraData;
struct sio_par par;
sio_initpar(&par);
par.rate = device->Frequency;
par.pchan = ((device->FmtChans != DevFmtMono) ? 2 : 1);
switch(device->FmtType)
{
case DevFmtByte:
par.bits = 8;
par.sig = 1;
break;
case DevFmtUByte:
par.bits = 8;
par.sig = 0;
break;
case DevFmtFloat:
case DevFmtShort:
par.bits = 16;
par.sig = 1;
break;
case DevFmtUShort:
par.bits = 16;
par.sig = 0;
break;
case DevFmtInt:
par.bits = 32;
par.sig = 1;
break;
case DevFmtUInt:
par.bits = 32;
par.sig = 0;
break;
}
par.le = SIO_LE_NATIVE;
par.round = device->UpdateSize;
par.appbufsz = device->UpdateSize * (device->NumUpdates-1);
if(!par.appbufsz) par.appbufsz = device->UpdateSize;
if(!sio_setpar(data->sndHandle, &par) || !sio_getpar(data->sndHandle, &par))
{
ERR("Failed to set device parameters\n");
return ALC_FALSE;
}
if(par.bits != par.bps*8)
{
ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8);
return ALC_FALSE;
}
device->Frequency = par.rate;
device->FmtChans = ((par.pchan==1) ? DevFmtMono : DevFmtStereo);
if(par.bits == 8 && par.sig == 1)
device->FmtType = DevFmtByte;
else if(par.bits == 8 && par.sig == 0)
device->FmtType = DevFmtUByte;
else if(par.bits == 16 && par.sig == 1)
device->FmtType = DevFmtShort;
else if(par.bits == 16 && par.sig == 0)
device->FmtType = DevFmtUShort;
else if(par.bits == 32 && par.sig == 1)
device->FmtType = DevFmtInt;
else if(par.bits == 32 && par.sig == 0)
device->FmtType = DevFmtUInt;
else
{
ERR("Unhandled sample format: %s %u-bit\n", (par.sig?"signed":"unsigned"), par.bits);
return ALC_FALSE;
}
device->UpdateSize = par.round;
device->NumUpdates = (par.bufsz/par.round) + 1;
SetDefaultChannelOrder(device);
return ALC_TRUE;
}
static ALCboolean qsa_reset_playback(ALCdevice* device)
{
qsa_data* data=(qsa_data*)device->ExtraData;
int32_t format=-1;
switch(device->FmtType)
{
case DevFmtByte:
format=SND_PCM_SFMT_S8;
break;
case DevFmtUByte:
format=SND_PCM_SFMT_U8;
break;
case DevFmtShort:
format=SND_PCM_SFMT_S16_LE;
break;
case DevFmtUShort:
format=SND_PCM_SFMT_U16_LE;
break;
case DevFmtInt:
format=SND_PCM_SFMT_S32_LE;
break;
case DevFmtUInt:
format=SND_PCM_SFMT_U32_LE;
break;
case DevFmtFloat:
format=SND_PCM_SFMT_FLOAT_LE;
break;
}
/* we actually don't want to block on writes */
snd_pcm_nonblock_mode(data->pcmHandle, 1);
/* Disable mmap to control data transfer to the audio device */
snd_pcm_plugin_set_disable(data->pcmHandle, PLUGIN_DISABLE_MMAP);
snd_pcm_plugin_set_disable(data->pcmHandle, PLUGIN_DISABLE_BUFFER_PARTIAL_BLOCKS);
// configure a sound channel
memset(&data->cparams, 0, sizeof(data->cparams));
data->cparams.channel=SND_PCM_CHANNEL_PLAYBACK;
data->cparams.mode=SND_PCM_MODE_BLOCK;
data->cparams.start_mode=SND_PCM_START_FULL;
data->cparams.stop_mode=SND_PCM_STOP_STOP;
data->cparams.buf.block.frag_size=device->UpdateSize*
ChannelsFromDevFmt(device->FmtChans)*BytesFromDevFmt(device->FmtType);
data->cparams.buf.block.frags_max=device->NumUpdates;
data->cparams.buf.block.frags_min=device->NumUpdates;
data->cparams.format.interleave=1;
data->cparams.format.rate=device->Frequency;
data->cparams.format.voices=ChannelsFromDevFmt(device->FmtChans);
data->cparams.format.format=format;
if ((snd_pcm_plugin_params(data->pcmHandle, &data->cparams))<0)
{
int original_rate=data->cparams.format.rate;
int original_voices=data->cparams.format.voices;
int original_format=data->cparams.format.format;
int it;
int jt;
for (it=0; it<1; it++)
{
/* Check for second pass */
if (it==1)
{
original_rate=ratelist[0].rate;
original_voices=channellist[0].channels;
original_format=formatlist[0].format;
}
do {
/* At first downgrade sample format */
jt=0;
do {
if (formatlist[jt].format==data->cparams.format.format)
{
data->cparams.format.format=formatlist[jt+1].format;
break;
}
if (formatlist[jt].format==0)
{
data->cparams.format.format=0;
break;
}
jt++;
} while(1);
if (data->cparams.format.format==0)
{
data->cparams.format.format=original_format;
/* At secod downgrade sample rate */
jt=0;
do {
if (ratelist[jt].rate==data->cparams.format.rate)
{
data->cparams.format.rate=ratelist[jt+1].rate;
break;
}
if (ratelist[jt].rate==0)
{
data->cparams.format.rate=0;
break;
}
jt++;
} while(1);
if (data->cparams.format.rate==0)
{
data->cparams.format.rate=original_rate;
data->cparams.format.format=original_format;
/* At third downgrade channels number */
jt=0;
do {
if(channellist[jt].channels==data->cparams.format.voices)
{
data->cparams.format.voices=channellist[jt+1].channels;
break;
}
if (channellist[jt].channels==0)
{
data->cparams.format.voices=0;
break;
}
jt++;
} while(1);
}
if (data->cparams.format.voices==0)
{
break;
}
}
data->cparams.buf.block.frag_size=device->UpdateSize*
data->cparams.format.voices*
snd_pcm_format_width(data->cparams.format.format)/8;
data->cparams.buf.block.frags_max=device->NumUpdates;
data->cparams.buf.block.frags_min=device->NumUpdates;
if ((snd_pcm_plugin_params(data->pcmHandle, &data->cparams))<0)
{
continue;
}
else
{
break;
}
} while(1);
if (data->cparams.format.voices!=0)
{
break;
}
}
if (data->cparams.format.voices==0)
{
return ALC_FALSE;
}
}
if ((snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_PLAYBACK))<0)
{
return ALC_FALSE;
}
memset(&data->csetup, 0, sizeof(data->csetup));
data->csetup.channel=SND_PCM_CHANNEL_PLAYBACK;
if (snd_pcm_plugin_setup(data->pcmHandle, &data->csetup)<0)
{
return ALC_FALSE;
}
/* now fill back to the our AL device */
device->Frequency=data->cparams.format.rate;
switch (data->cparams.format.voices)
{
case 1:
device->FmtChans=DevFmtMono;
break;
case 2:
device->FmtChans=DevFmtStereo;
break;
case 4:
device->FmtChans=DevFmtQuad;
break;
case 6:
device->FmtChans=DevFmtX51;
break;
case 7:
device->FmtChans=DevFmtX61;
break;
case 8:
device->FmtChans=DevFmtX71;
break;
default:
device->FmtChans=DevFmtMono;
break;
}
switch (data->cparams.format.format)
{
case SND_PCM_SFMT_S8:
device->FmtType=DevFmtByte;
break;
case SND_PCM_SFMT_U8:
device->FmtType=DevFmtUByte;
break;
case SND_PCM_SFMT_S16_LE:
device->FmtType=DevFmtShort;
break;
case SND_PCM_SFMT_U16_LE:
device->FmtType=DevFmtUShort;
break;
case SND_PCM_SFMT_S32_LE:
device->FmtType=DevFmtInt;
break;
case SND_PCM_SFMT_U32_LE:
device->FmtType=DevFmtUInt;
break;
case SND_PCM_SFMT_FLOAT_LE:
device->FmtType=DevFmtFloat;
break;
default:
device->FmtType=DevFmtShort;
break;
}
SetDefaultChannelOrder(device);
device->UpdateSize=data->csetup.buf.block.frag_size/
(ChannelsFromDevFmt(device->FmtChans)*BytesFromDevFmt(device->FmtType));
device->NumUpdates=data->csetup.buf.block.frags;
data->size=data->csetup.buf.block.frag_size;
data->buffer=malloc(data->size);
if (!data->buffer)
{
return ALC_FALSE;
}
return ALC_TRUE;
}
static ALCboolean alsa_reset_playback(ALCdevice *device)
{
alsa_data *data = (alsa_data*)device->ExtraData;
snd_pcm_uframes_t periodSizeInFrames;
unsigned int periodLen, bufferLen;
snd_pcm_sw_params_t *sp = NULL;
snd_pcm_hw_params_t *hp = NULL;
snd_pcm_access_t access;
snd_pcm_format_t format;
unsigned int periods;
unsigned int rate;
const char *funcerr;
int allowmmap;
int err;
format = -1;
switch(device->FmtType)
{
case DevFmtByte:
format = SND_PCM_FORMAT_S8;
break;
case DevFmtUByte:
format = SND_PCM_FORMAT_U8;
break;
case DevFmtShort:
format = SND_PCM_FORMAT_S16;
break;
case DevFmtUShort:
format = SND_PCM_FORMAT_U16;
break;
case DevFmtInt:
format = SND_PCM_FORMAT_S32;
break;
case DevFmtUInt:
format = SND_PCM_FORMAT_U32;
break;
case DevFmtFloat:
format = SND_PCM_FORMAT_FLOAT;
break;
}
allowmmap = GetConfigValueBool("alsa", "mmap", 1);
periods = device->NumUpdates;
periodLen = (ALuint64)device->UpdateSize * 1000000 / device->Frequency;
bufferLen = periodLen * periods;
rate = device->Frequency;
snd_pcm_hw_params_malloc(&hp);
#define CHECK(x) if((funcerr=#x),(err=(x)) < 0) goto error
CHECK(snd_pcm_hw_params_any(data->pcmHandle, hp));
/* set interleaved access */
if(!allowmmap || snd_pcm_hw_params_set_access(data->pcmHandle, hp, SND_PCM_ACCESS_MMAP_INTERLEAVED) < 0)
{
if(periods > 2)
{
periods--;
bufferLen = periodLen * periods;
}
CHECK(snd_pcm_hw_params_set_access(data->pcmHandle, hp, SND_PCM_ACCESS_RW_INTERLEAVED));
}
/* test and set format (implicitly sets sample bits) */
if(snd_pcm_hw_params_test_format(data->pcmHandle, hp, format) < 0)
{
static const struct {
snd_pcm_format_t format;
enum DevFmtType fmttype;
} formatlist[] = {
{ SND_PCM_FORMAT_FLOAT, DevFmtFloat },
{ SND_PCM_FORMAT_S32, DevFmtInt },
{ SND_PCM_FORMAT_U32, DevFmtUInt },
{ SND_PCM_FORMAT_S16, DevFmtShort },
{ SND_PCM_FORMAT_U16, DevFmtUShort },
{ SND_PCM_FORMAT_S8, DevFmtByte },
{ SND_PCM_FORMAT_U8, DevFmtUByte },
};
size_t k;
for(k = 0;k < COUNTOF(formatlist);k++)
{
format = formatlist[k].format;
if(snd_pcm_hw_params_test_format(data->pcmHandle, hp, format) >= 0)
{
device->FmtType = formatlist[k].fmttype;
break;
}
}
}
CHECK(snd_pcm_hw_params_set_format(data->pcmHandle, hp, format));
/* test and set channels (implicitly sets frame bits) */
if(snd_pcm_hw_params_test_channels(data->pcmHandle, hp, ChannelsFromDevFmt(device->FmtChans)) < 0)
{
static const enum DevFmtChannels channellist[] = {
DevFmtStereo,
DevFmtQuad,
DevFmtX51,
DevFmtX71,
DevFmtMono,
};
size_t k;
for(k = 0;k < COUNTOF(channellist);k++)
{
if(snd_pcm_hw_params_test_channels(data->pcmHandle, hp, ChannelsFromDevFmt(channellist[k])) >= 0)
{
device->FmtChans = channellist[k];
break;
}
}
}
CHECK(snd_pcm_hw_params_set_channels(data->pcmHandle, hp, ChannelsFromDevFmt(device->FmtChans)));
/* set rate (implicitly constrains period/buffer parameters) */
if(snd_pcm_hw_params_set_rate_resample(data->pcmHandle, hp, 0) < 0)
ERR("Failed to disable ALSA resampler\n");
CHECK(snd_pcm_hw_params_set_rate_near(data->pcmHandle, hp, &rate, NULL));
/* set buffer time (implicitly constrains period/buffer parameters) */
CHECK(snd_pcm_hw_params_set_buffer_time_near(data->pcmHandle, hp, &bufferLen, NULL));
/* set period time (implicitly sets buffer size/bytes/time and period size/bytes) */
CHECK(snd_pcm_hw_params_set_period_time_near(data->pcmHandle, hp, &periodLen, NULL));
/* install and prepare hardware configuration */
CHECK(snd_pcm_hw_params(data->pcmHandle, hp));
/* retrieve configuration info */
CHECK(snd_pcm_hw_params_get_access(hp, &access));
CHECK(snd_pcm_hw_params_get_period_size(hp, &periodSizeInFrames, NULL));
CHECK(snd_pcm_hw_params_get_periods(hp, &periods, NULL));
snd_pcm_hw_params_free(hp);
hp = NULL;
snd_pcm_sw_params_malloc(&sp);
CHECK(snd_pcm_sw_params_current(data->pcmHandle, sp));
CHECK(snd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, periodSizeInFrames));
CHECK(snd_pcm_sw_params_set_stop_threshold(data->pcmHandle, sp, periodSizeInFrames*periods));
CHECK(snd_pcm_sw_params(data->pcmHandle, sp));
#undef CHECK
snd_pcm_sw_params_free(sp);
sp = NULL;
/* Increase periods by one, since the temp buffer counts as an extra
* period */
if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
device->NumUpdates = periods+1;
else
device->NumUpdates = periods;
device->UpdateSize = periodSizeInFrames;
device->Frequency = rate;
SetDefaultChannelOrder(device);
return ALC_TRUE;
error:
ERR("%s failed: %s\n", funcerr, snd_strerror(err));
if(hp) snd_pcm_hw_params_free(hp);
if(sp) snd_pcm_sw_params_free(sp);
return ALC_FALSE;
}
static ALCboolean alsa_reset_playback(ALCdevice *device)
{
alsa_data *data = (alsa_data*)device->ExtraData;
snd_pcm_uframes_t periodSizeInFrames;
unsigned int periodLen, bufferLen;
snd_pcm_sw_params_t *sp = NULL;
snd_pcm_hw_params_t *p = NULL;
snd_pcm_access_t access;
snd_pcm_format_t format;
unsigned int periods;
unsigned int rate;
int allowmmap;
char *err;
int i;
switch(aluBytesFromFormat(device->Format))
{
case 1:
format = SND_PCM_FORMAT_U8;
break;
case 2:
format = SND_PCM_FORMAT_S16;
break;
case 4:
format = SND_PCM_FORMAT_FLOAT;
break;
default:
AL_PRINT("Unknown format: 0x%x\n", device->Format);
return ALC_FALSE;
}
allowmmap = GetConfigValueBool("alsa", "mmap", 1);
periods = device->NumUpdates;
periodLen = (ALuint64)device->UpdateSize * 1000000 / device->Frequency;
rate = device->Frequency;
err = NULL;
psnd_pcm_hw_params_malloc(&p);
if((i=psnd_pcm_hw_params_any(data->pcmHandle, p)) < 0)
err = "any";
/* set interleaved access */
if(i >= 0 && (!allowmmap || (i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_MMAP_INTERLEAVED)) < 0))
{
if(periods > 2) periods--;
if((i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
err = "set access";
}
/* set format (implicitly sets sample bits) */
if(i >= 0 && (i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, format)) < 0)
{
switch(aluChannelsFromFormat(device->Format))
{
case 1: device->Format = AL_FORMAT_MONO_FLOAT32; break;
case 2: device->Format = AL_FORMAT_STEREO_FLOAT32; break;
case 4: device->Format = AL_FORMAT_QUAD32; break;
case 6: device->Format = AL_FORMAT_51CHN32; break;
case 7: device->Format = AL_FORMAT_61CHN32; break;
case 8: device->Format = AL_FORMAT_71CHN32; break;
}
if((i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, SND_PCM_FORMAT_FLOAT)) < 0)
{
switch(aluChannelsFromFormat(device->Format))
{
case 1: device->Format = AL_FORMAT_MONO16; break;
case 2: device->Format = AL_FORMAT_STEREO16; break;
case 4: device->Format = AL_FORMAT_QUAD16; break;
case 6: device->Format = AL_FORMAT_51CHN16; break;
case 7: device->Format = AL_FORMAT_61CHN16; break;
case 8: device->Format = AL_FORMAT_71CHN16; break;
}
if((i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, SND_PCM_FORMAT_S16)) < 0)
{
switch(aluChannelsFromFormat(device->Format))
{
case 1: device->Format = AL_FORMAT_MONO8; break;
case 2: device->Format = AL_FORMAT_STEREO8; break;
case 4: device->Format = AL_FORMAT_QUAD8; break;
case 6: device->Format = AL_FORMAT_51CHN8; break;
case 7: device->Format = AL_FORMAT_61CHN8; break;
case 8: device->Format = AL_FORMAT_71CHN8; break;
}
if((i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, SND_PCM_FORMAT_U8)) < 0)
err = "set format";
}
}
}
/* set channels (implicitly sets frame bits) */
if(i >= 0 && (i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, aluChannelsFromFormat(device->Format))) < 0)
{
switch(aluBytesFromFormat(device->Format))
{
case 1: device->Format = AL_FORMAT_STEREO8; break;
case 2: device->Format = AL_FORMAT_STEREO16; break;
case 4: device->Format = AL_FORMAT_STEREO_FLOAT32; break;
}
if((i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, 2)) < 0)
{
switch(aluBytesFromFormat(device->Format))
{
case 1: device->Format = AL_FORMAT_MONO8; break;
case 2: device->Format = AL_FORMAT_MONO16; break;
case 4: device->Format = AL_FORMAT_MONO_FLOAT32; break;
}
if((i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, 1)) < 0)
err = "set channels";
}
}
if(i >= 0 && (i=psnd_pcm_hw_params_set_rate_resample(data->pcmHandle, p, 0)) < 0)
{
AL_PRINT("Failed to disable ALSA resampler\n");
i = 0;
}
/* set rate (implicitly constrains period/buffer parameters) */
if(i >= 0 && (i=psnd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0)
err = "set rate near";
/* set buffer time (implicitly constrains period/buffer parameters) */
bufferLen = periodLen * periods;
if(i >= 0 && (i=psnd_pcm_hw_params_set_buffer_time_near(data->pcmHandle, p, &bufferLen, NULL)) < 0)
err = "set buffer time near";
/* set period time in frame units (implicitly sets buffer size/bytes/time and period size/bytes) */
if(i >= 0 && (i=psnd_pcm_hw_params_set_period_time_near(data->pcmHandle, p, &periodLen, NULL)) < 0)
err = "set period time near";
/* install and prepare hardware configuration */
if(i >= 0 && (i=psnd_pcm_hw_params(data->pcmHandle, p)) < 0)
err = "set params";
if(i >= 0 && (i=psnd_pcm_hw_params_get_access(p, &access)) < 0)
err = "get access";
if(i >= 0 && (i=psnd_pcm_hw_params_get_period_size(p, &periodSizeInFrames, NULL)) < 0)
err = "get period size";
if(i >= 0 && (i=psnd_pcm_hw_params_get_periods(p, &periods, NULL)) < 0)
err = "get periods";
if(i < 0)
{
AL_PRINT("%s failed: %s\n", err, psnd_strerror(i));
psnd_pcm_hw_params_free(p);
return ALC_FALSE;
}
psnd_pcm_hw_params_free(p);
err = NULL;
psnd_pcm_sw_params_malloc(&sp);
if((i=psnd_pcm_sw_params_current(data->pcmHandle, sp)) != 0)
err = "sw current";
if(i == 0 && (i=psnd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, periodSizeInFrames)) != 0)
err = "sw set avail min";
if(i == 0 && (i=psnd_pcm_sw_params(data->pcmHandle, sp)) != 0)
err = "sw set params";
if(i != 0)
{
AL_PRINT("%s failed: %s\n", err, psnd_strerror(i));
psnd_pcm_sw_params_free(sp);
return ALC_FALSE;
}
psnd_pcm_sw_params_free(sp);
SetDefaultChannelOrder(device);
data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, periodSizeInFrames);
if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
{
/* Increase periods by one, since the temp buffer counts as an extra
* period */
periods++;
data->buffer = malloc(data->size);
if(!data->buffer)
{
AL_PRINT("buffer malloc failed\n");
return ALC_FALSE;
}
device->UpdateSize = periodSizeInFrames;
device->NumUpdates = periods;
device->Frequency = rate;
data->thread = StartThread(ALSANoMMapProc, device);
}
else
{
i = psnd_pcm_prepare(data->pcmHandle);
if(i < 0)
{
AL_PRINT("prepare error: %s\n", psnd_strerror(i));
return ALC_FALSE;
}
device->UpdateSize = periodSizeInFrames;
device->NumUpdates = periods;
device->Frequency = rate;
data->thread = StartThread(ALSAProc, device);
}
if(data->thread == NULL)
{
AL_PRINT("Could not create playback thread\n");
free(data->buffer);
data->buffer = NULL;
return ALC_FALSE;
}
return ALC_TRUE;
}
static ALCboolean oss_reset_playback( ALCdevice* device )
{
oss_data* data = ( oss_data* )device->ExtraData;
int numFragmentsLogSize;
int log2FragmentSize;
unsigned int periods;
audio_buf_info info;
ALuint frameSize;
int numChannels;
int ossFormat;
int ossSpeed;
char* err;
int i;
switch ( aluBytesFromFormat( device->Format ) )
{
case 1:
ossFormat = AFMT_U8;
break;
case 4:
switch ( aluChannelsFromFormat( device->Format ) )
{
case 1:
device->Format = AL_FORMAT_MONO16;
break;
case 2:
device->Format = AL_FORMAT_STEREO16;
break;
case 4:
device->Format = AL_FORMAT_QUAD16;
break;
case 6:
device->Format = AL_FORMAT_51CHN16;
break;
case 7:
device->Format = AL_FORMAT_61CHN16;
break;
case 8:
device->Format = AL_FORMAT_71CHN16;
break;
}
/* fall-through */
case 2:
ossFormat = AFMT_S16_NE;
break;
default:
AL_PRINT( "Unknown format: 0x%x\n", device->Format );
return ALC_FALSE;
}
periods = device->NumUpdates;
numChannels = aluChannelsFromFormat( device->Format );
frameSize = numChannels * aluBytesFromFormat( device->Format );
ossSpeed = device->Frequency;
log2FragmentSize = log2i( device->UpdateSize * frameSize );
/* according to the OSS spec, 16 bytes are the minimum */
if ( log2FragmentSize < 4 )
{
log2FragmentSize = 4;
}
/* Subtract one period since the temp mixing buffer counts as one. Still
* need at least two on the card, though. */
if ( periods > 2 ) { periods--; }
numFragmentsLogSize = ( periods << 16 ) | log2FragmentSize;
#define ok(func, str) (i=(func),((i<0)?(err=(str)),0:1))
/* Don't fail if SETFRAGMENT fails. We can handle just about anything
* that's reported back via GETOSPACE */
ioctl( data->fd, SNDCTL_DSP_SETFRAGMENT, &numFragmentsLogSize );
if ( !( ok( ioctl( data->fd, SNDCTL_DSP_SETFMT, &ossFormat ), "set format" ) &&
ok( ioctl( data->fd, SNDCTL_DSP_CHANNELS, &numChannels ), "set channels" ) &&
ok( ioctl( data->fd, SNDCTL_DSP_SPEED, &ossSpeed ), "set speed" ) &&
ok( ioctl( data->fd, SNDCTL_DSP_GETOSPACE, &info ), "get space" ) ) )
{
AL_PRINT( "%s failed: %s\n", err, strerror( errno ) );
return ALC_FALSE;
}
#undef ok
if ( ( int )aluChannelsFromFormat( device->Format ) != numChannels )
{
AL_PRINT( "Could not set %d channels, got %d instead\n", aluChannelsFromFormat( device->Format ), numChannels );
return ALC_FALSE;
}
if ( !( ( ossFormat == AFMT_U8 && aluBytesFromFormat( device->Format ) == 1 ) ||
( ossFormat == AFMT_S16_NE && aluBytesFromFormat( device->Format ) == 2 ) ) )
{
AL_PRINT( "Could not set %d-bit output, got format %#x\n", aluBytesFromFormat( device->Format ) * 8, ossFormat );
return ALC_FALSE;
}
device->Frequency = ossSpeed;
device->UpdateSize = info.fragsize / frameSize;
device->NumUpdates = info.fragments + 1;
data->data_size = device->UpdateSize * frameSize;
data->mix_data = calloc( 1, data->data_size );
SetDefaultChannelOrder( device );
data->thread = StartThread( OSSProc, device );
if ( data->thread == NULL )
{
free( data->mix_data );
data->mix_data = NULL;
return ALC_FALSE;
}
return ALC_TRUE;
}
static ALCboolean pa_open_playback(ALCdevice *device, const ALCchar *deviceName)
{
const PaStreamInfo *streamInfo;
PaStreamParameters outParams;
pa_data *data;
PaError err;
if(!deviceName)
deviceName = pa_device;
else if(strcmp(deviceName, pa_device) != 0)
return ALC_FALSE;
if(!pa_load())
return ALC_FALSE;
data = (pa_data*)calloc(1, sizeof(pa_data));
data->update_size = device->UpdateSize;
device->ExtraData = data;
outParams.device = GetConfigValueInt("port", "device", -1);
if(outParams.device < 0)
outParams.device = pPa_GetDefaultOutputDevice();
outParams.suggestedLatency = (device->UpdateSize*device->NumUpdates) /
(float)device->Frequency;
outParams.hostApiSpecificStreamInfo = NULL;
switch(aluBytesFromFormat(device->Format))
{
case 1:
outParams.sampleFormat = paUInt8;
break;
case 2:
outParams.sampleFormat = paInt16;
break;
case 4:
outParams.sampleFormat = paFloat32;
break;
default:
AL_PRINT("Unknown format: 0x%x\n", device->Format);
device->ExtraData = NULL;
free(data);
return ALC_FALSE;
}
outParams.channelCount = aluChannelsFromFormat(device->Format);
SetDefaultChannelOrder(device);
err = pPa_OpenStream(&data->stream, NULL, &outParams, device->Frequency,
device->UpdateSize, paNoFlag, pa_callback, device);
if(err != paNoError)
{
AL_PRINT("Pa_OpenStream() returned an error: %s\n", pPa_GetErrorText(err));
device->ExtraData = NULL;
free(data);
return ALC_FALSE;
}
streamInfo = pPa_GetStreamInfo(data->stream);
device->szDeviceName = strdup(deviceName);
device->Frequency = streamInfo->sampleRate;
return ALC_TRUE;
}
static ALCboolean ALCsolarisBackend_reset(ALCsolarisBackend *self)
{
ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
audio_info_t info;
ALsizei frameSize;
ALsizei numChannels;
AUDIO_INITINFO(&info);
info.play.sample_rate = device->Frequency;
if(device->FmtChans != DevFmtMono)
device->FmtChans = DevFmtStereo;
numChannels = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder);
info.play.channels = numChannels;
switch(device->FmtType)
{
case DevFmtByte:
info.play.precision = 8;
info.play.encoding = AUDIO_ENCODING_LINEAR;
break;
case DevFmtUByte:
info.play.precision = 8;
info.play.encoding = AUDIO_ENCODING_LINEAR8;
break;
case DevFmtUShort:
case DevFmtInt:
case DevFmtUInt:
case DevFmtFloat:
device->FmtType = DevFmtShort;
/* fall-through */
case DevFmtShort:
info.play.precision = 16;
info.play.encoding = AUDIO_ENCODING_LINEAR;
break;
}
frameSize = numChannels * BytesFromDevFmt(device->FmtType);
info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
if(ioctl(self->fd, AUDIO_SETINFO, &info) < 0)
{
ERR("ioctl failed: %s\n", strerror(errno));
return ALC_FALSE;
}
if(ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder) != (ALsizei)info.play.channels)
{
ERR("Failed to set %s, got %u channels instead\n", DevFmtChannelsString(device->FmtChans), info.play.channels);
return ALC_FALSE;
}
if(!((info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8 && device->FmtType == DevFmtUByte) ||
(info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtByte) ||
(info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtShort) ||
(info.play.precision == 32 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtInt)))
{
ERR("Could not set %s samples, got %d (0x%x)\n", DevFmtTypeString(device->FmtType),
info.play.precision, info.play.encoding);
return ALC_FALSE;
}
device->Frequency = info.play.sample_rate;
device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
SetDefaultChannelOrder(device);
free(self->mix_data);
self->data_size = device->UpdateSize * FrameSizeFromDevFmt(
device->FmtChans, device->FmtType, device->AmbiOrder
);
self->mix_data = calloc(1, self->data_size);
return ALC_TRUE;
}
static ALCboolean solaris_reset_playback(ALCdevice *device)
{
solaris_data *data = (solaris_data*)device->ExtraData;
audio_info_t info;
ALuint frameSize;
int numChannels;
AUDIO_INITINFO(&info);
info.play.sample_rate = device->Frequency;
if(device->FmtChans != DevFmtMono)
device->FmtChans = DevFmtStereo;
numChannels = ChannelsFromDevFmt(device->FmtChans);
info.play.channels = numChannels;
switch(device->FmtType)
{
case DevFmtByte:
info.play.precision = 8;
info.play.encoding = AUDIO_ENCODING_LINEAR;
break;
case DevFmtUByte:
info.play.precision = 8;
info.play.encoding = AUDIO_ENCODING_LINEAR8;
break;
case DevFmtUShort:
case DevFmtInt:
case DevFmtUInt:
case DevFmtFloat:
device->FmtType = DevFmtShort;
/* fall-through */
case DevFmtShort:
info.play.precision = 16;
info.play.encoding = AUDIO_ENCODING_LINEAR;
break;
}
frameSize = numChannels * BytesFromDevFmt(device->FmtType);
info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
{
ERR("ioctl failed: %s\n", strerror(errno));
return ALC_FALSE;
}
if(ChannelsFromDevFmt(device->FmtChans) != info.play.channels)
{
ERR("Could not set %d channels, got %d instead\n", ChannelsFromDevFmt(device->FmtChans), info.play.channels);
return ALC_FALSE;
}
if(!((info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8 && device->FmtType == DevFmtUByte) ||
(info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtByte) ||
(info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtShort) ||
(info.play.precision == 32 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtInt)))
{
ERR("Could not set %s samples, got %d (0x%x)\n", DevFmtTypeString(device->FmtType),
info.play.precision, info.play.encoding);
return ALC_FALSE;
}
device->Frequency = info.play.sample_rate;
device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
SetDefaultChannelOrder(device);
return ALC_TRUE;
}
static ALCboolean solaris_reset_playback(ALCdevice *device)
{
solaris_data *data = (solaris_data*)device->ExtraData;
audio_info_t info;
ALuint frameSize;
int numChannels;
AUDIO_INITINFO(&info);
switch(aluBytesFromFormat(device->Format))
{
case 1:
info.play.precision = 8;
info.play.encoding = AUDIO_ENCODING_LINEAR8;
break;
case 4:
switch(numChannels)
{
case 1: device->Format = AL_FORMAT_MONO16; break;
case 2: device->Format = AL_FORMAT_STEREO16; break;
case 4: device->Format = AL_FORMAT_QUAD16; break;
case 6: device->Format = AL_FORMAT_51CHN16; break;
case 7: device->Format = AL_FORMAT_61CHN16; break;
case 8: device->Format = AL_FORMAT_71CHN16; break;
}
/* fall-through */
case 2:
info.play.precision = 16;
info.play.encoding = AUDIO_ENCODING_LINEAR;
break;
default:
AL_PRINT("Unknown format: 0x%x\n", device->Format);
return ALC_FALSE;
}
numChannels = aluChannelsFromFormat(device->Format);
info.play.sample_rate = device->Frequency;
info.play.channels = numChannels;
frameSize = numChannels * aluBytesFromFormat(device->Format);
info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
{
AL_PRINT("ioctl failed: %s\n", strerror(errno));
return ALC_FALSE;
}
if(aluChannelsFromFormat(device->Format) != info.play.channels)
{
AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), info.play.channels);
return ALC_FALSE;
}
if(!((info.play.precision == 8 && aluBytesFromFormat(device->Format) == 1) ||
(info.play.precision == 16 && aluBytesFromFormat(device->Format) == 2)))
{
AL_PRINT("Could not set %d-bit output, got %d\n", aluBytesFromFormat(device->Format)*8, info.play.precision);
return ALC_FALSE;
}
device->Frequency = info.play.sample_rate;
device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
data->data_size = device->UpdateSize * frameSize;
data->mix_data = calloc(1, data->data_size);
SetDefaultChannelOrder(device);
data->thread = StartThread(SolarisProc, device);
if(data->thread == NULL)
{
free(data->mix_data);
data->mix_data = NULL;
return ALC_FALSE;
}
return ALC_TRUE;
}
static ALCenum pa_open_playback(ALCdevice *device, const ALCchar *deviceName)
{
PaStreamParameters outParams;
pa_data *data;
PaError err;
if(!deviceName)
deviceName = pa_device;
else if(strcmp(deviceName, pa_device) != 0)
return ALC_INVALID_VALUE;
data = (pa_data*)calloc(1, sizeof(pa_data));
data->update_size = device->UpdateSize;
device->ExtraData = data;
outParams.device = -1;
if(!ConfigValueInt("port", "device", &outParams.device) || outParams.device < 0)
outParams.device = Pa_GetDefaultOutputDevice();
outParams.suggestedLatency = (device->UpdateSize*device->NumUpdates) /
(float)device->Frequency;
outParams.hostApiSpecificStreamInfo = NULL;
switch(device->FmtType)
{
case DevFmtByte:
outParams.sampleFormat = paInt8;
break;
case DevFmtUByte:
outParams.sampleFormat = paUInt8;
break;
case DevFmtUShort:
device->FmtType = DevFmtShort;
/* fall-through */
case DevFmtShort:
outParams.sampleFormat = paInt16;
break;
case DevFmtFloat:
outParams.sampleFormat = paFloat32;
break;
}
outParams.channelCount = ((device->FmtChans == DevFmtMono) ? 1 : 2);
SetDefaultChannelOrder(device);
err = Pa_OpenStream(&data->stream, NULL, &outParams, device->Frequency,
device->UpdateSize, paNoFlag, pa_callback, device);
if(err != paNoError)
{
ERR("Pa_OpenStream() returned an error: %s\n", Pa_GetErrorText(err));
device->ExtraData = NULL;
free(data);
return ALC_INVALID_VALUE;
}
device->szDeviceName = strdup(deviceName);
if((ALuint)outParams.channelCount != ChannelsFromDevFmt(device->FmtChans))
{
if(outParams.channelCount != 1 && outParams.channelCount != 2)
{
ERR("Unhandled channel count: %u\n", outParams.channelCount);
Pa_CloseStream(data->stream);
device->ExtraData = NULL;
free(data);
return ALC_INVALID_VALUE;
}
if((device->Flags&DEVICE_CHANNELS_REQUEST))
ERR("Failed to set %s, got %u channels instead\n", DevFmtChannelsString(device->FmtChans), outParams.channelCount);
device->Flags &= ~DEVICE_CHANNELS_REQUEST;
device->FmtChans = ((outParams.channelCount==1) ? DevFmtMono : DevFmtStereo);
}
return ALC_NO_ERROR;
}
static ALCboolean alsa_reset_playback(ALCdevice *device)
{
alsa_data *data = (alsa_data*)device->ExtraData;
snd_pcm_uframes_t periodSizeInFrames;
unsigned int periodLen, bufferLen;
snd_pcm_sw_params_t *sp = NULL;
snd_pcm_hw_params_t *p = NULL;
snd_pcm_access_t access;
snd_pcm_format_t format;
unsigned int periods;
unsigned int rate;
int allowmmap;
char *err;
int i;
format = -1;
switch(device->FmtType)
{
case DevFmtByte:
format = SND_PCM_FORMAT_S8;
break;
case DevFmtUByte:
format = SND_PCM_FORMAT_U8;
break;
case DevFmtShort:
format = SND_PCM_FORMAT_S16;
break;
case DevFmtUShort:
format = SND_PCM_FORMAT_U16;
break;
case DevFmtFloat:
format = SND_PCM_FORMAT_FLOAT;
break;
}
allowmmap = GetConfigValueBool("alsa", "mmap", 1);
periods = device->NumUpdates;
periodLen = (ALuint64)device->UpdateSize * 1000000 / device->Frequency;
bufferLen = periodLen * periods;
rate = device->Frequency;
err = NULL;
snd_pcm_hw_params_malloc(&p);
if((i=snd_pcm_hw_params_any(data->pcmHandle, p)) < 0)
err = "any";
/* set interleaved access */
if(i >= 0 && (!allowmmap || (i=snd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_MMAP_INTERLEAVED)) < 0))
{
if(periods > 2)
{
periods--;
bufferLen = periodLen * periods;
}
if((i=snd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
err = "set access";
}
/* set format (implicitly sets sample bits) */
if(i >= 0 && (i=snd_pcm_hw_params_set_format(data->pcmHandle, p, format)) < 0)
{
device->FmtType = DevFmtFloat;
if(format == SND_PCM_FORMAT_FLOAT ||
(i=snd_pcm_hw_params_set_format(data->pcmHandle, p, SND_PCM_FORMAT_FLOAT)) < 0)
{
device->FmtType = DevFmtShort;
if(format == SND_PCM_FORMAT_S16 ||
(i=snd_pcm_hw_params_set_format(data->pcmHandle, p, SND_PCM_FORMAT_S16)) < 0)
{
device->FmtType = DevFmtUByte;
if(format == SND_PCM_FORMAT_U8 ||
(i=snd_pcm_hw_params_set_format(data->pcmHandle, p, SND_PCM_FORMAT_U8)) < 0)
err = "set format";
}
}
}
/* set channels (implicitly sets frame bits) */
if(i >= 0 && (i=snd_pcm_hw_params_set_channels(data->pcmHandle, p, ChannelsFromDevFmt(device->FmtChans))) < 0)
{
if((i=snd_pcm_hw_params_set_channels(data->pcmHandle, p, 2)) < 0)
{
if((i=snd_pcm_hw_params_set_channels(data->pcmHandle, p, 1)) < 0)
err = "set channels";
else
device->FmtChans = DevFmtMono;
}
else
device->FmtChans = DevFmtStereo;
}
if(i >= 0 && (i=snd_pcm_hw_params_set_rate_resample(data->pcmHandle, p, 0)) < 0)
{
ERR("Failed to disable ALSA resampler\n");
i = 0;
}
/* set rate (implicitly constrains period/buffer parameters) */
if(i >= 0 && (i=snd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0)
err = "set rate near";
/* set buffer time (implicitly constrains period/buffer parameters) */
if(i >= 0 && (i=snd_pcm_hw_params_set_buffer_time_near(data->pcmHandle, p, &bufferLen, NULL)) < 0)
err = "set buffer time near";
/* set period time in frame units (implicitly sets buffer size/bytes/time and period size/bytes) */
if(i >= 0 && (i=snd_pcm_hw_params_set_period_time_near(data->pcmHandle, p, &periodLen, NULL)) < 0)
err = "set period time near";
/* install and prepare hardware configuration */
if(i >= 0 && (i=snd_pcm_hw_params(data->pcmHandle, p)) < 0)
err = "set params";
if(i >= 0 && (i=snd_pcm_hw_params_get_access(p, &access)) < 0)
err = "get access";
if(i >= 0 && (i=snd_pcm_hw_params_get_period_size(p, &periodSizeInFrames, NULL)) < 0)
err = "get period size";
if(i >= 0 && (i=snd_pcm_hw_params_get_periods(p, &periods, NULL)) < 0)
err = "get periods";
if(i < 0)
{
ERR("%s failed: %s\n", err, snd_strerror(i));
snd_pcm_hw_params_free(p);
return ALC_FALSE;
}
snd_pcm_hw_params_free(p);
err = NULL;
snd_pcm_sw_params_malloc(&sp);
if((i=snd_pcm_sw_params_current(data->pcmHandle, sp)) != 0)
err = "sw current";
if(i == 0 && (i=snd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, periodSizeInFrames)) != 0)
err = "sw set avail min";
if(i == 0 && (i=snd_pcm_sw_params_set_stop_threshold(data->pcmHandle, sp, periodSizeInFrames*periods)) != 0)
err = "sw set stop threshold";
if(i == 0 && (i=snd_pcm_sw_params(data->pcmHandle, sp)) != 0)
err = "sw set params";
if(i != 0)
{
ERR("%s failed: %s\n", err, snd_strerror(i));
snd_pcm_sw_params_free(sp);
return ALC_FALSE;
}
snd_pcm_sw_params_free(sp);
device->Frequency = rate;
SetDefaultChannelOrder(device);
data->size = snd_pcm_frames_to_bytes(data->pcmHandle, periodSizeInFrames);
if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
{
/* Increase periods by one, since the temp buffer counts as an extra
* period */
periods++;
data->buffer = malloc(data->size);
if(!data->buffer)
{
ERR("buffer malloc failed\n");
return ALC_FALSE;
}
device->UpdateSize = periodSizeInFrames;
device->NumUpdates = periods;
data->thread = StartThread(ALSANoMMapProc, device);
}
else
{
i = snd_pcm_prepare(data->pcmHandle);
if(i < 0)
{
ERR("prepare error: %s\n", snd_strerror(i));
return ALC_FALSE;
}
device->UpdateSize = periodSizeInFrames;
device->NumUpdates = periods;
data->thread = StartThread(ALSAProc, device);
}
if(data->thread == NULL)
{
ERR("Could not create playback thread\n");
free(data->buffer);
data->buffer = NULL;
return ALC_FALSE;
}
return ALC_TRUE;
}
