static void InitHQPanning(ALCdevice *device, const AmbDecConf *conf, const ALuint speakermap[MAX_OUTPUT_CHANNELS])
{
const char *devname;
int decflags = 0;
size_t count;
ALuint i;
devname = al_string_get_cstr(device->DeviceName);
if(GetConfigValueBool(devname, "decoder", "distance-comp", 1))
decflags |= BFDF_DistanceComp;
if((conf->ChanMask&AMBI_PERIPHONIC_MASK))
{
count = (conf->ChanMask > 0x1ff) ? 16 :
(conf->ChanMask > 0xf) ? 9 : 4;
for(i = 0;i < count;i++)
{
device->Dry.Ambi.Map[i].Scale = 1.0f;
device->Dry.Ambi.Map[i].Index = i;
}
}
else
{
static int map[MAX_AMBI_COEFFS] = { 0, 1, 3, 4, 8, 9, 15 };
count = (conf->ChanMask > 0x1ff) ? 7 :
(conf->ChanMask > 0xf) ? 5 : 3;
for(i = 0;i < count;i++)
{
device->Dry.Ambi.Map[i].Scale = 1.0f;
device->Dry.Ambi.Map[i].Index = map[i];
}
}
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = count;
TRACE("Enabling %s-band %s-order%s ambisonic decoder\n",
(conf->FreqBands == 1) ? "single" : "dual",
(conf->ChanMask > 0xf) ? (conf->ChanMask > 0x1ff) ? "third" : "second" : "first",
(conf->ChanMask&AMBI_PERIPHONIC_MASK) ? " periphonic" : ""
);
bformatdec_reset(device->AmbiDecoder, conf, count, device->Frequency,
speakermap, decflags);
if(bformatdec_getOrder(device->AmbiDecoder) < 2)
{
memcpy(&device->FOAOut.Ambi, &device->Dry.Ambi, sizeof(device->FOAOut.Ambi));
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
}
else
{
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
for(i = 0;i < 4;i++)
{
device->FOAOut.Ambi.Map[i].Scale = 1.0f;
device->FOAOut.Ambi.Map[i].Index = i;
}
device->FOAOut.CoeffCount = 0;
}
}
void alc_pulse_init(BackendFuncs *func_list) //{{{
{
*func_list = pulse_funcs;
pulse_ctx_flags = 0;
if(!GetConfigValueBool("pulse", "spawn-server", 0))
pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
} //}}}
ALCboolean alc_pulse_init(BackendFuncs *func_list) //{{{
{
if(!pulse_load())
return ALC_FALSE;
*func_list = pulse_funcs;
pulse_ctx_flags = 0;
if(!GetConfigValueBool("pulse", "spawn-server", 0))
pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
return ALC_TRUE;
} //}}}
ALCboolean alc_pulse_init(BackendFuncs *func_list)
{
ALCboolean ret = ALC_FALSE;
if(pulse_load())
{
pa_threaded_mainloop *loop;
pulse_ctx_flags = 0;
if(!GetConfigValueBool("pulse", "spawn-server", 0))
pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
if((loop=pa_threaded_mainloop_new()) &&
pa_threaded_mainloop_start(loop) >= 0)
{
pa_context *context;
pa_threaded_mainloop_lock(loop);
context = connect_context(loop, AL_TRUE);
if(context)
{
*func_list = pulse_funcs;
ret = ALC_TRUE;
/* Some libraries (Phonon, Qt) set some pulseaudio properties
* through environment variables, which causes all streams in
* the process to inherit them. This attempts to filter those
* properties out by setting them to 0-length data. */
prop_filter = pa_proplist_new();
pa_proplist_set(prop_filter, PA_PROP_MEDIA_ROLE, NULL, 0);
pa_proplist_set(prop_filter, "phonon.streamid", NULL, 0);
pa_context_disconnect(context);
pa_context_unref(context);
}
pa_threaded_mainloop_unlock(loop);
pa_threaded_mainloop_stop(loop);
}
if(loop)
pa_threaded_mainloop_free(loop);
}
return ret;
}
static ALCboolean alsa_reset_playback(ALCdevice *device)
{
alsa_data *data = (alsa_data*)device->ExtraData;
snd_pcm_uframes_t periodSizeInFrames;
snd_pcm_sw_params_t *sp = NULL;
snd_pcm_hw_params_t *p = NULL;
snd_pcm_access_t access;
unsigned int periods;
unsigned int rate;
int allowmmap;
char *err;
int i;
switch(aluBytesFromFormat(device->Format))
{
case 1:
data->format = SND_PCM_FORMAT_U8;
break;
case 2:
data->format = SND_PCM_FORMAT_S16;
break;
case 4:
data->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;
periodSizeInFrames = device->UpdateSize;
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(err == NULL && (!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(err == NULL && (i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, data->format)) < 0)
err = "set format";
/* set channels (implicitly sets frame bits) */
if(err == NULL && (i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, aluChannelsFromFormat(device->Format))) < 0)
err = "set channels";
/* set periods (implicitly constrains period/buffer parameters) */
if(err == NULL && (i=psnd_pcm_hw_params_set_periods_near(data->pcmHandle, p, &periods, NULL)) < 0)
err = "set periods near";
/* set rate (implicitly constrains period/buffer parameters) */
if(err == NULL && (i=psnd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0)
err = "set rate near";
/* set period size in frame units (implicitly sets buffer size/bytes/time and period time/bytes) */
if(err == NULL && (i=psnd_pcm_hw_params_set_period_size_near(data->pcmHandle, p, &periodSizeInFrames, NULL)) < 0)
err = "set period size near";
/* install and prepare hardware configuration */
if(err == NULL && (i=psnd_pcm_hw_params(data->pcmHandle, p)) < 0)
err = "set params";
if(err == NULL && (i=psnd_pcm_hw_params_get_access(p, &access)) < 0)
err = "get access";
if(err == NULL && (i=psnd_pcm_hw_params_get_period_size(p, &periodSizeInFrames, NULL)) < 0)
err = "get period size";
if(err == NULL && (i=psnd_pcm_hw_params_get_periods(p, &periods, NULL)) < 0)
err = "get periods";
if(err != NULL)
{
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(err == NULL && (i=psnd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, periodSizeInFrames)) != 0)
err = "sw set avail min";
if(err == NULL && (i=psnd_pcm_sw_params(data->pcmHandle, sp)) != 0)
err = "sw set params";
if(err != NULL)
{
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);
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;
}
data->thread = StartThread(ALSANoMMapProc, device);
}
else
{
i = psnd_pcm_prepare(data->pcmHandle);
if(i < 0)
{
AL_PRINT("prepare error: %s\n", psnd_strerror(i));
free(data->buffer);
data->buffer = NULL;
return ALC_FALSE;
}
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;
}
device->UpdateSize = periodSizeInFrames;
device->NumUpdates = periods;
device->Frequency = rate;
return ALC_TRUE;
}
void aluInitRenderer(ALCdevice *device, ALint hrtf_id, enum HrtfRequestMode hrtf_appreq, enum HrtfRequestMode hrtf_userreq)
{
const char *mode;
bool headphones;
int bs2blevel;
size_t i;
device->Hrtf = NULL;
al_string_clear(&device->Hrtf_Name);
device->Render_Mode = NormalRender;
memset(&device->Dry.Ambi, 0, sizeof(device->Dry.Ambi));
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = 0;
if(device->FmtChans != DevFmtStereo)
{
ALuint speakermap[MAX_OUTPUT_CHANNELS];
const char *devname, *layout = NULL;
AmbDecConf conf, *pconf = NULL;
if(hrtf_appreq == Hrtf_Enable)
device->Hrtf_Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
ambdec_init(&conf);
devname = al_string_get_cstr(device->DeviceName);
switch(device->FmtChans)
{
case DevFmtQuad: layout = "quad"; break;
case DevFmtX51: layout = "surround51"; break;
case DevFmtX51Rear: layout = "surround51rear"; break;
case DevFmtX61: layout = "surround61"; break;
case DevFmtX71: layout = "surround71"; break;
/* Mono, Stereo, and B-Fornat output don't use custom decoders. */
case DevFmtMono:
case DevFmtStereo:
case DevFmtBFormat3D:
break;
}
if(layout)
{
const char *fname;
if(ConfigValueStr(devname, "decoder", layout, &fname))
{
if(!ambdec_load(&conf, fname))
ERR("Failed to load layout file %s\n", fname);
else
{
if(conf.ChanMask > 0xffff)
ERR("Unsupported channel mask 0x%04x (max 0xffff)\n", conf.ChanMask);
else
{
if(MakeSpeakerMap(device, &conf, speakermap))
pconf = &conf;
}
}
}
}
if(pconf && GetConfigValueBool(devname, "decoder", "hq-mode", 0))
{
if(!device->AmbiDecoder)
device->AmbiDecoder = bformatdec_alloc();
}
else
{
bformatdec_free(device->AmbiDecoder);
device->AmbiDecoder = NULL;
}
if(!pconf)
InitPanning(device);
else if(device->AmbiDecoder)
InitHQPanning(device, pconf, speakermap);
else
InitCustomPanning(device, pconf, speakermap);
ambdec_deinit(&conf);
return;
}
bformatdec_free(device->AmbiDecoder);
device->AmbiDecoder = NULL;
headphones = device->IsHeadphones;
if(device->Type != Loopback)
{
const char *mode;
if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "stereo-mode", &mode))
{
if(strcasecmp(mode, "headphones") == 0)
headphones = true;
else if(strcasecmp(mode, "speakers") == 0)
headphones = false;
else if(strcasecmp(mode, "auto") != 0)
ERR("Unexpected stereo-mode: %s\n", mode);
}
}
if(hrtf_userreq == Hrtf_Default)
{
bool usehrtf = (headphones && hrtf_appreq != Hrtf_Disable) ||
(hrtf_appreq == Hrtf_Enable);
if(!usehrtf) goto no_hrtf;
device->Hrtf_Status = ALC_HRTF_ENABLED_SOFT;
if(headphones && hrtf_appreq != Hrtf_Disable)
device->Hrtf_Status = ALC_HRTF_HEADPHONES_DETECTED_SOFT;
}
else
{
if(hrtf_userreq != Hrtf_Enable)
{
if(hrtf_appreq == Hrtf_Enable)
device->Hrtf_Status = ALC_HRTF_DENIED_SOFT;
goto no_hrtf;
}
device->Hrtf_Status = ALC_HRTF_REQUIRED_SOFT;
}
if(VECTOR_SIZE(device->Hrtf_List) == 0)
{
VECTOR_DEINIT(device->Hrtf_List);
device->Hrtf_List = EnumerateHrtf(device->DeviceName);
}
if(hrtf_id >= 0 && (size_t)hrtf_id < VECTOR_SIZE(device->Hrtf_List))
{
const HrtfEntry *entry = &VECTOR_ELEM(device->Hrtf_List, hrtf_id);
if(GetHrtfSampleRate(entry->hrtf) == device->Frequency)
{
device->Hrtf = entry->hrtf;
al_string_copy(&device->Hrtf_Name, entry->name);
}
}
for(i = 0;!device->Hrtf && i < VECTOR_SIZE(device->Hrtf_List);i++)
{
const HrtfEntry *entry = &VECTOR_ELEM(device->Hrtf_List, i);
if(GetHrtfSampleRate(entry->hrtf) == device->Frequency)
{
device->Hrtf = entry->hrtf;
al_string_copy(&device->Hrtf_Name, entry->name);
}
}
if(device->Hrtf)
{
device->Render_Mode = HrtfRender;
if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "hrtf-mode", &mode))
{
if(strcasecmp(mode, "full") == 0)
device->Render_Mode = HrtfRender;
else if(strcasecmp(mode, "basic") == 0)
device->Render_Mode = NormalRender;
else
ERR("Unexpected hrtf-mode: %s\n", mode);
}
TRACE("HRTF enabled, \"%s\"\n", al_string_get_cstr(device->Hrtf_Name));
InitHrtfPanning(device);
return;
}
device->Hrtf_Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
no_hrtf:
TRACE("HRTF disabled\n");
bs2blevel = ((headphones && hrtf_appreq != Hrtf_Disable) ||
(hrtf_appreq == Hrtf_Enable)) ? 5 : 0;
if(device->Type != Loopback)
ConfigValueInt(al_string_get_cstr(device->DeviceName), NULL, "cf_level", &bs2blevel);
if(bs2blevel > 0 && bs2blevel <= 6)
{
device->Bs2b = al_calloc(16, sizeof(*device->Bs2b));
bs2b_set_params(device->Bs2b, bs2blevel, device->Frequency);
device->Render_Mode = StereoPair;
TRACE("BS2B enabled\n");
InitPanning(device);
return;
}
TRACE("BS2B disabled\n");
device->Render_Mode = NormalRender;
if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "stereo-panning", &mode))
{
if(strcasecmp(mode, "paired") == 0)
device->Render_Mode = StereoPair;
else if(strcasecmp(mode, "uhj") != 0)
ERR("Unexpected stereo-panning: %s\n", mode);
}
if(device->Render_Mode == NormalRender)
{
device->Uhj_Encoder = al_calloc(16, sizeof(Uhj2Encoder));
TRACE("UHJ enabled\n");
InitUhjPanning(device);
return;
}
TRACE("UHJ disabled\n");
InitPanning(device);
}
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;
}
int MOB_File_GetConfigValueBool(const char *blockName, const char *keyName, int def)
{
char buffer[ 64 ];
return GetConfigValueBool( ConvertBlockName( blockName ), ConvertKeyName( buffer, keyName ), def );
}
ALvoid aluInitPanning(ALCdevice *Device)
{
ALfloat SpeakerAngle[MAXCHANNELS];
ALfloat (*Matrix)[MAXCHANNELS];
Channel *Speaker2Chan;
ALfloat Alpha, Theta;
ALfloat *PanningLUT;
ALint pos, offset;
ALuint s, s2;
for(s = 0;s < MAXCHANNELS;s++)
{
for(s2 = 0;s2 < MAXCHANNELS;s2++)
Device->ChannelMatrix[s][s2] = ((s==s2) ? 1.0f : 0.0f);
}
Speaker2Chan = Device->Speaker2Chan;
Matrix = Device->ChannelMatrix;
switch(Device->FmtChans)
{
case DevFmtMono:
Matrix[FRONT_LEFT][FRONT_CENTER] = aluSqrt(0.5);
Matrix[FRONT_RIGHT][FRONT_CENTER] = aluSqrt(0.5);
Matrix[SIDE_LEFT][FRONT_CENTER] = aluSqrt(0.5);
Matrix[SIDE_RIGHT][FRONT_CENTER] = aluSqrt(0.5);
Matrix[BACK_LEFT][FRONT_CENTER] = aluSqrt(0.5);
Matrix[BACK_RIGHT][FRONT_CENTER] = aluSqrt(0.5);
Matrix[BACK_CENTER][FRONT_CENTER] = 1.0f;
Device->NumChan = 1;
Speaker2Chan[0] = FRONT_CENTER;
SpeakerAngle[0] = 0.0f * M_PI/180.0f;
break;
case DevFmtStereo:
Matrix[FRONT_CENTER][FRONT_LEFT] = aluSqrt(0.5);
Matrix[FRONT_CENTER][FRONT_RIGHT] = aluSqrt(0.5);
Matrix[SIDE_LEFT][FRONT_LEFT] = 1.0f;
Matrix[SIDE_RIGHT][FRONT_RIGHT] = 1.0f;
Matrix[BACK_LEFT][FRONT_LEFT] = 1.0f;
Matrix[BACK_RIGHT][FRONT_RIGHT] = 1.0f;
Matrix[BACK_CENTER][FRONT_LEFT] = aluSqrt(0.5);
Matrix[BACK_CENTER][FRONT_RIGHT] = aluSqrt(0.5);
Device->NumChan = 2;
Speaker2Chan[0] = FRONT_LEFT;
Speaker2Chan[1] = FRONT_RIGHT;
SpeakerAngle[0] = -90.0f * M_PI/180.0f;
SpeakerAngle[1] = 90.0f * M_PI/180.0f;
SetSpeakerArrangement("layout_STEREO", SpeakerAngle, Speaker2Chan, Device->NumChan);
break;
case DevFmtQuad:
Matrix[FRONT_CENTER][FRONT_LEFT] = aluSqrt(0.5);
Matrix[FRONT_CENTER][FRONT_RIGHT] = aluSqrt(0.5);
Matrix[SIDE_LEFT][FRONT_LEFT] = aluSqrt(0.5);
Matrix[SIDE_LEFT][BACK_LEFT] = aluSqrt(0.5);
Matrix[SIDE_RIGHT][FRONT_RIGHT] = aluSqrt(0.5);
Matrix[SIDE_RIGHT][BACK_RIGHT] = aluSqrt(0.5);
Matrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5);
Matrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5);
Device->NumChan = 4;
Speaker2Chan[0] = BACK_LEFT;
Speaker2Chan[1] = FRONT_LEFT;
Speaker2Chan[2] = FRONT_RIGHT;
Speaker2Chan[3] = BACK_RIGHT;
SpeakerAngle[0] = -135.0f * M_PI/180.0f;
SpeakerAngle[1] = -45.0f * M_PI/180.0f;
SpeakerAngle[2] = 45.0f * M_PI/180.0f;
SpeakerAngle[3] = 135.0f * M_PI/180.0f;
SetSpeakerArrangement("layout_QUAD", SpeakerAngle, Speaker2Chan, Device->NumChan);
break;
case DevFmtX51:
Matrix[SIDE_LEFT][FRONT_LEFT] = aluSqrt(0.5);
Matrix[SIDE_LEFT][BACK_LEFT] = aluSqrt(0.5);
Matrix[SIDE_RIGHT][FRONT_RIGHT] = aluSqrt(0.5);
Matrix[SIDE_RIGHT][BACK_RIGHT] = aluSqrt(0.5);
Matrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5);
Matrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5);
Device->NumChan = 5;
Speaker2Chan[0] = BACK_LEFT;
Speaker2Chan[1] = FRONT_LEFT;
Speaker2Chan[2] = FRONT_CENTER;
Speaker2Chan[3] = FRONT_RIGHT;
Speaker2Chan[4] = BACK_RIGHT;
SpeakerAngle[0] = -110.0f * M_PI/180.0f;
SpeakerAngle[1] = -30.0f * M_PI/180.0f;
SpeakerAngle[2] = 0.0f * M_PI/180.0f;
SpeakerAngle[3] = 30.0f * M_PI/180.0f;
SpeakerAngle[4] = 110.0f * M_PI/180.0f;
SetSpeakerArrangement("layout_51CHN", SpeakerAngle, Speaker2Chan, Device->NumChan);
break;
case DevFmtX61:
Matrix[BACK_LEFT][BACK_CENTER] = aluSqrt(0.5);
Matrix[BACK_LEFT][SIDE_LEFT] = aluSqrt(0.5);
Matrix[BACK_RIGHT][BACK_CENTER] = aluSqrt(0.5);
Matrix[BACK_RIGHT][SIDE_RIGHT] = aluSqrt(0.5);
Device->NumChan = 6;
Speaker2Chan[0] = SIDE_LEFT;
Speaker2Chan[1] = FRONT_LEFT;
Speaker2Chan[2] = FRONT_CENTER;
Speaker2Chan[3] = FRONT_RIGHT;
Speaker2Chan[4] = SIDE_RIGHT;
Speaker2Chan[5] = BACK_CENTER;
SpeakerAngle[0] = -90.0f * M_PI/180.0f;
SpeakerAngle[1] = -30.0f * M_PI/180.0f;
SpeakerAngle[2] = 0.0f * M_PI/180.0f;
SpeakerAngle[3] = 30.0f * M_PI/180.0f;
SpeakerAngle[4] = 90.0f * M_PI/180.0f;
SpeakerAngle[5] = 180.0f * M_PI/180.0f;
SetSpeakerArrangement("layout_61CHN", SpeakerAngle, Speaker2Chan, Device->NumChan);
break;
case DevFmtX71:
Matrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5);
Matrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5);
Device->NumChan = 7;
Speaker2Chan[0] = BACK_LEFT;
Speaker2Chan[1] = SIDE_LEFT;
Speaker2Chan[2] = FRONT_LEFT;
Speaker2Chan[3] = FRONT_CENTER;
Speaker2Chan[4] = FRONT_RIGHT;
Speaker2Chan[5] = SIDE_RIGHT;
Speaker2Chan[6] = BACK_RIGHT;
SpeakerAngle[0] = -150.0f * M_PI/180.0f;
SpeakerAngle[1] = -90.0f * M_PI/180.0f;
SpeakerAngle[2] = -30.0f * M_PI/180.0f;
SpeakerAngle[3] = 0.0f * M_PI/180.0f;
SpeakerAngle[4] = 30.0f * M_PI/180.0f;
SpeakerAngle[5] = 90.0f * M_PI/180.0f;
SpeakerAngle[6] = 150.0f * M_PI/180.0f;
SetSpeakerArrangement("layout_71CHN", SpeakerAngle, Speaker2Chan, Device->NumChan);
break;
}
if(GetConfigValueBool(NULL, "scalemix", 0))
{
ALfloat maxout = 1.0f;
for(s = 0;s < MAXCHANNELS;s++)
{
ALfloat out = 0.0f;
for(s2 = 0;s2 < MAXCHANNELS;s2++)
out += Device->ChannelMatrix[s2][s];
maxout = __max(maxout, out);
}
maxout = 1.0f/maxout;
for(s = 0;s < MAXCHANNELS;s++)
{
for(s2 = 0;s2 < MAXCHANNELS;s2++)
Device->ChannelMatrix[s2][s] *= maxout;
}
}
PanningLUT = Device->PanningLUT;
for(pos = 0; pos < LUT_NUM; pos++)
{
/* clear all values */
offset = MAXCHANNELS * pos;
for(s = 0; s < MAXCHANNELS; s++)
PanningLUT[offset+s] = 0.0f;
if(Device->NumChan == 1)
{
PanningLUT[offset + Speaker2Chan[0]] = 1.0f;
continue;
}
/* source angle */
Theta = aluLUTpos2Angle(pos);
/* set panning values */
for(s = 0; s < Device->NumChan - 1; s++)
{
if(Theta >= SpeakerAngle[s] && Theta < SpeakerAngle[s+1])
{
/* source between speaker s and speaker s+1 */
Alpha = M_PI_2 * (Theta-SpeakerAngle[s]) /
(SpeakerAngle[s+1]-SpeakerAngle[s]);
PanningLUT[offset + Speaker2Chan[s]] = cos(Alpha);
PanningLUT[offset + Speaker2Chan[s+1]] = sin(Alpha);
break;
}
}
if(s == Device->NumChan - 1)
{
/* source between last and first speaker */
if(Theta < SpeakerAngle[0])
Theta += 2.0f * M_PI;
Alpha = M_PI_2 * (Theta-SpeakerAngle[s]) /
(2.0f * M_PI + SpeakerAngle[0]-SpeakerAngle[s]);
PanningLUT[offset + Speaker2Chan[s]] = cos(Alpha);
PanningLUT[offset + Speaker2Chan[0]] = sin(Alpha);
}
}
}
static void alc_init(void)
{
int i;
const char *devs, *str;
InitializeCriticalSection(&g_csMutex);
ALTHUNK_INIT();
ReadALConfig();
tls_create(&LocalContext);
devs = GetConfigValue(NULL, "drivers", "");
if(devs[0])
{
int n;
size_t len;
const char *next = devs;
i = 0;
do {
devs = next;
next = strchr(devs, ',');
if(!devs[0] || devs[0] == ',')
continue;
len = (next ? ((size_t)(next-devs)) : strlen(devs));
for(n = i;BackendList[n].Init;n++)
{
if(len == strlen(BackendList[n].name) &&
strncmp(BackendList[n].name, devs, len) == 0)
{
BackendInfo Bkp = BackendList[i];
BackendList[i] = BackendList[n];
BackendList[n] = Bkp;
i++;
}
}
} while(next++);
BackendList[i].name = NULL;
BackendList[i].Init = NULL;
BackendList[i].Deinit = NULL;
BackendList[i].Probe = NULL;
}
for(i = 0;BackendList[i].Init;i++)
{
BackendList[i].Init(&BackendList[i].Funcs);
BackendList[i].Probe(DEVICE_PROBE);
BackendList[i].Probe(ALL_DEVICE_PROBE);
BackendList[i].Probe(CAPTURE_DEVICE_PROBE);
}
DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0);
str = GetConfigValue(NULL, "excludefx", "");
if(str[0])
{
const struct {
const char *name;
int type;
} EffectList[] = {
{ "eaxreverb", EAXREVERB },
{ "reverb", REVERB },
{ "echo", ECHO },
{ NULL, 0 }
};
int n;
size_t len;
const char *next = str;
do {
str = next;
next = strchr(str, ',');
if(!str[0] || next == str)
continue;
len = (next ? ((size_t)(next-str)) : strlen(str));
for(n = 0;EffectList[n].name;n++)
{
if(len == strlen(EffectList[n].name) &&
strncmp(EffectList[n].name, str, len) == 0)
DisabledEffects[EffectList[n].type] = AL_TRUE;
}
} while(next++);
}
}
/* OpenAL */
static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name)
{
const char *pulse_name = NULL;
pa_stream_flags_t flags;
pa_sample_spec spec;
pulse_data *data;
pa_operation *o;
if(device_name)
{
ALuint i;
if(!allDevNameMap)
probe_devices(AL_FALSE);
for(i = 0; i < numDevNames; i++)
{
if(strcmp(device_name, allDevNameMap[i].name) == 0)
{
pulse_name = allDevNameMap[i].device_name;
break;
}
}
if(i == numDevNames)
return ALC_INVALID_VALUE;
}
if(pulse_open(device) == ALC_FALSE)
return ALC_INVALID_VALUE;
data = device->ExtraData;
pa_threaded_mainloop_lock(data->loop);
flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
PA_STREAM_FIX_CHANNELS;
if(!GetConfigValueBool("pulse", "allow-moves", 0))
flags |= PA_STREAM_DONT_MOVE;
spec.format = PA_SAMPLE_S16NE;
spec.rate = 44100;
spec.channels = 2;
data->stream = connect_playback_stream(pulse_name, data->loop, data->context,
flags, NULL, &spec, NULL);
if(!data->stream)
{
pa_threaded_mainloop_unlock(data->loop);
pulse_close(device);
return ALC_INVALID_VALUE;
}
data->device_name = strdup(pa_stream_get_device_name(data->stream));
o = pa_context_get_sink_info_by_name(data->context, data->device_name,
sink_name_callback, device);
wait_for_operation(o, data->loop);
pa_stream_set_moved_callback(data->stream, stream_moved_callback, device);
pa_threaded_mainloop_unlock(data->loop);
return ALC_NO_ERROR;
}
static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name)
{
const char *pulse_name = NULL;
pa_stream_flags_t flags = 0;
pa_channel_map chanmap;
pulse_data *data;
pa_operation *o;
ALuint samples;
if(device_name)
{
ALuint i;
if(!allCaptureDevNameMap)
probe_devices(AL_TRUE);
for(i = 0; i < numCaptureDevNames; i++)
{
if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
{
pulse_name = allCaptureDevNameMap[i].device_name;
break;
}
}
if(i == numCaptureDevNames)
return ALC_INVALID_VALUE;
}
if(pulse_open(device) == ALC_FALSE)
return ALC_INVALID_VALUE;
data = device->ExtraData;
pa_threaded_mainloop_lock(data->loop);
data->spec.rate = device->Frequency;
data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
switch(device->FmtType)
{
case DevFmtUByte:
data->spec.format = PA_SAMPLE_U8;
break;
case DevFmtShort:
data->spec.format = PA_SAMPLE_S16NE;
break;
case DevFmtInt:
data->spec.format = PA_SAMPLE_S32NE;
break;
case DevFmtFloat:
data->spec.format = PA_SAMPLE_FLOAT32NE;
break;
case DevFmtByte:
case DevFmtUShort:
case DevFmtUInt:
ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
if(pa_sample_spec_valid(&data->spec) == 0)
{
ERR("Invalid sample format\n");
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
{
ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
samples = device->UpdateSize * device->NumUpdates;
samples = maxu(samples, 100 * device->Frequency / 1000);
data->attr.minreq = -1;
data->attr.prebuf = -1;
data->attr.maxlength = samples * pa_frame_size(&data->spec);
data->attr.tlength = -1;
data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
pa_frame_size(&data->spec);
flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
if(!GetConfigValueBool("pulse", "allow-moves", 0))
flags |= PA_STREAM_DONT_MOVE;
data->stream = connect_record_stream(pulse_name, data->loop, data->context,
flags, &data->attr, &data->spec,
&chanmap);
if(!data->stream)
{
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
data->device_name = strdup(pa_stream_get_device_name(data->stream));
o = pa_context_get_source_info_by_name(data->context, data->device_name,
source_name_callback, device);
wait_for_operation(o, data->loop);
pa_stream_set_moved_callback(data->stream, stream_moved_callback, device);
pa_threaded_mainloop_unlock(data->loop);
return ALC_NO_ERROR;
fail:
pulse_close(device);
return ALC_INVALID_VALUE;
}
static ALCboolean pulse_reset_playback(ALCdevice *device)
{
pulse_data *data = device->ExtraData;
pa_stream_flags_t flags = 0;
pa_channel_map chanmap;
ALuint len;
pa_threaded_mainloop_lock(data->loop);
if(data->stream)
{
pa_stream_set_moved_callback(data->stream, NULL, NULL);
#if PA_CHECK_VERSION(0,9,15)
if(pa_stream_set_buffer_attr_callback)
pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
#endif
pa_stream_disconnect(data->stream);
pa_stream_unref(data->stream);
data->stream = NULL;
}
if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
{
pa_operation *o;
o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
wait_for_operation(o, data->loop);
}
if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
flags |= PA_STREAM_FIX_RATE;
flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
flags |= PA_STREAM_ADJUST_LATENCY;
flags |= PA_STREAM_START_CORKED;
if(!GetConfigValueBool("pulse", "allow-moves", 0))
flags |= PA_STREAM_DONT_MOVE;
switch(device->FmtType)
{
case DevFmtByte:
device->FmtType = DevFmtUByte;
/* fall-through */
case DevFmtUByte:
data->spec.format = PA_SAMPLE_U8;
break;
case DevFmtUShort:
device->FmtType = DevFmtShort;
/* fall-through */
case DevFmtShort:
data->spec.format = PA_SAMPLE_S16NE;
break;
case DevFmtUInt:
device->FmtType = DevFmtInt;
/* fall-through */
case DevFmtInt:
data->spec.format = PA_SAMPLE_S32NE;
break;
case DevFmtFloat:
data->spec.format = PA_SAMPLE_FLOAT32NE;
break;
}
data->spec.rate = device->Frequency;
data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
if(pa_sample_spec_valid(&data->spec) == 0)
{
ERR("Invalid sample format\n");
pa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
{
ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
pa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
SetDefaultWFXChannelOrder(device);
data->attr.fragsize = -1;
data->attr.prebuf = 0;
data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
data->attr.maxlength = -1;
data->stream = connect_playback_stream(data->device_name, data->loop,
data->context, flags, &data->attr,
&data->spec, &chanmap);
if(!data->stream)
{
pa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
data->spec = *(pa_stream_get_sample_spec(data->stream));
if(device->Frequency != data->spec.rate)
{
pa_operation *o;
/* Server updated our playback rate, so modify the buffer attribs
* accordingly. */
device->NumUpdates = (ALuint)((ALdouble)device->NumUpdates / device->Frequency *
data->spec.rate + 0.5);
data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
data->attr.tlength = data->attr.minreq * clampu(device->NumUpdates, 2, 16);
data->attr.maxlength = -1;
data->attr.prebuf = 0;
o = pa_stream_set_buffer_attr(data->stream, &data->attr,
stream_success_callback, device);
wait_for_operation(o, data->loop);
device->Frequency = data->spec.rate;
}
pa_stream_set_moved_callback(data->stream, stream_moved_callback, device);
#if PA_CHECK_VERSION(0,9,15)
if(pa_stream_set_buffer_attr_callback)
pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
#endif
stream_buffer_attr_callback(data->stream, device);
len = data->attr.minreq / pa_frame_size(&data->spec);
if((CPUCapFlags&CPU_CAP_SSE))
len = (len+3)&~3;
device->NumUpdates = (ALuint)((ALdouble)device->NumUpdates/len*device->UpdateSize + 0.5);
device->NumUpdates = clampu(device->NumUpdates, 2, 16);
device->UpdateSize = len;
pa_threaded_mainloop_unlock(data->loop);
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 *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;
}
