AudioOutputSettings* AudioOutputNULL::GetOutputSettings(bool /*digital*/)
{
// Pretend that we support everything
AudioFormat fmt;
int rate;
AudioOutputSettings *settings = new AudioOutputSettings();
while ((rate = settings->GetNextRate()))
{
settings->AddSupportedRate(rate);
}
while ((fmt = settings->GetNextFormat()))
{
settings->AddSupportedFormat(fmt);
}
for (uint channels = CHANNELS_MIN; channels <= CHANNELS_MAX; channels++)
{
settings->AddSupportedChannels(channels);
}
settings->setPassthrough(-1); // no passthrough
return settings;
}
AudioOutputSettings* AudioOutputOSS::GetOutputSettings(bool /*digital*/)
{
AudioOutputSettings *settings = new AudioOutputSettings();
QByteArray device = main_device.toLatin1();
audiofd = open(device.constData(), O_WRONLY | O_NONBLOCK);
AudioFormat fmt;
int rate, formats = 0;
if (audiofd < 0)
{
VBERRENO(QString("Error opening audio device (%1)").arg(main_device));
delete settings;
return NULL;
}
while ((rate = settings->GetNextRate()))
{
int rate2 = rate;
if(ioctl(audiofd, SNDCTL_DSP_SPEED, &rate2) >= 0
&& rate2 == rate)
settings->AddSupportedRate(rate);
}
if(ioctl(audiofd, SNDCTL_DSP_GETFMTS, &formats) < 0)
VBERRENO("Error retrieving formats");
else
{
int ofmt;
while ((fmt = settings->GetNextFormat()))
{
switch (fmt)
{
case FORMAT_U8: ofmt = AFMT_U8; break;
case FORMAT_S16: ofmt = AFMT_S16_NE; break;
default: continue;
}
if (formats & ofmt)
settings->AddSupportedFormat(fmt);
}
}
#if defined(AFMT_AC3)
// Check if drivers supports AC3
settings->setPassthrough(((formats & AFMT_AC3) != 0) - 1);
#endif
for (int i = 1; i <= 2; i++)
{
int channel = i;
if (ioctl(audiofd, SNDCTL_DSP_CHANNELS, &channel) >= 0 &&
channel == i)
{
settings->AddSupportedChannels(i);
}
}
close(audiofd);
audiofd = -1;
return settings;
}
AudioOutputSettings* AudioOutputALSA::GetOutputSettings(bool passthrough)
{
snd_pcm_hw_params_t *params;
snd_pcm_format_t afmt = SND_PCM_FORMAT_UNKNOWN;
AudioFormat fmt;
int rate;
int err;
AudioOutputSettings *settings = new AudioOutputSettings();
if (pcm_handle)
{
snd_pcm_close(pcm_handle);
pcm_handle = NULL;
}
if ((err = TryOpenDevice(OPEN_FLAGS, passthrough)) < 0)
{
AERROR(QString("snd_pcm_open(\"%1\")").arg(m_lastdevice));
delete settings;
return NULL;
}
snd_pcm_hw_params_alloca(¶ms);
if ((err = snd_pcm_hw_params_any(pcm_handle, params)) < 0)
{
snd_pcm_close(pcm_handle);
if ((err = TryOpenDevice(OPEN_FLAGS&FILTER_FLAGS, passthrough)) < 0)
{
AERROR(QString("snd_pcm_open(\"%1\")").arg(m_lastdevice));
delete settings;
return NULL;
}
if ((err = snd_pcm_hw_params_any(pcm_handle, params)) < 0)
{
AERROR("No playback configurations available");
snd_pcm_close(pcm_handle);
pcm_handle = NULL;
delete settings;
return NULL;
}
Warn("Supported audio format detection will be inacurrate "
"(using plugin?)");
}
while ((rate = settings->GetNextRate()))
if(snd_pcm_hw_params_test_rate(pcm_handle, params, rate, 0) >= 0)
settings->AddSupportedRate(rate);
while ((fmt = settings->GetNextFormat()))
{
switch (fmt)
{
case FORMAT_U8: afmt = SND_PCM_FORMAT_U8; break;
case FORMAT_S16: afmt = SND_PCM_FORMAT_S16; break;
case FORMAT_S24: afmt = SND_PCM_FORMAT_S24; break;
case FORMAT_S32: afmt = SND_PCM_FORMAT_S32; break;
case FORMAT_FLT: afmt = SND_PCM_FORMAT_FLOAT; break;
default: continue;
}
if (snd_pcm_hw_params_test_format(pcm_handle, params, afmt) >= 0)
settings->AddSupportedFormat(fmt);
}
for (uint channels = CHANNELS_MIN; channels <= CHANNELS_MAX; channels++)
if (snd_pcm_hw_params_test_channels(pcm_handle, params, channels) >= 0)
settings->AddSupportedChannels(channels);
snd_pcm_close(pcm_handle);
pcm_handle = NULL;
/* Check if name or description contains information
to know if device can accept passthrough or not */
QMap<QString, QString> *alsadevs = GetALSADevices("pcm");
while(1)
{
QString real_device = (((passthru || enc) && m_discretedigital) ?
passthru_device : main_device);
QString desc = alsadevs->value(real_device);
settings->setPassthrough(1); // yes passthrough
if (real_device.contains("digital", Qt::CaseInsensitive) ||
desc.contains("digital", Qt::CaseInsensitive))
break;
if (real_device.contains("iec958", Qt::CaseInsensitive))
break;
if (real_device.contains("spdif", Qt::CaseInsensitive))
break;
if (real_device.contains("hdmi", Qt::CaseInsensitive))
break;
settings->setPassthrough(-1); // no passthrough
// PulseAudio does not support passthrough
if (real_device.contains("pulse", Qt::CaseInsensitive) ||
desc.contains("pulse", Qt::CaseInsensitive))
break;
if (real_device.contains("analog", Qt::CaseInsensitive) ||
desc.contains("analog", Qt::CaseInsensitive))
break;
if (real_device.contains("surround", Qt::CaseInsensitive) ||
desc.contains("surround", Qt::CaseInsensitive))
break;
settings->setPassthrough(0); // maybe passthrough
break;
}
delete alsadevs;
return settings;
}
