GF_Err EPOCAudio::Open(u32 sample_rate, Bool stereo)
{
TInt res = 0;
u32 count;
TMdaAudioDataSettings::TAudioCaps epoc_sr;
switch (sample_rate) {
case 8000: epoc_sr = TMdaAudioDataSettings::ESampleRate8000Hz; break;
case 11025: epoc_sr = TMdaAudioDataSettings::ESampleRate11025Hz; break;
case 12000: epoc_sr = TMdaAudioDataSettings::ESampleRate12000Hz; break;
case 16000: epoc_sr = TMdaAudioDataSettings::ESampleRate16000Hz; break;
case 22050: epoc_sr = TMdaAudioDataSettings::ESampleRate22050Hz; break;
case 24000: epoc_sr = TMdaAudioDataSettings::ESampleRate24000Hz; break;
case 32000: epoc_sr = TMdaAudioDataSettings::ESampleRate32000Hz; break;
case 44100: epoc_sr = TMdaAudioDataSettings::ESampleRate44100Hz; break;
case 48000: epoc_sr = TMdaAudioDataSettings::ESampleRate48000Hz; break;
default:
return GF_NOT_SUPPORTED;
}
state = EPOC_AUDIO_INIT;
gf_sleep(10);
TRAP(res, m_stream = CMdaAudioOutputStream::NewL(*this) );
if ((res!=KErrNone) || !m_stream) {
GF_LOG(GF_LOG_ERROR, GF_LOG_MMIO, ("[EPOCAudio] Cannot create output audio stream\n"));
return GF_IO_ERR;
}
m_stream->Open(&m_settings);
/*wait for ack - if not getting it in 50*40 = 2sec, abort*/
count = 50;
while (count) {
if (state == EPOC_AUDIO_OPEN) break;
else if (state == EPOC_AUDIO_ERROR) {
return GF_IO_ERR;
}
gf_sleep(40);
TInt error;
CActiveScheduler::RunIfReady(error, CActive::EPriorityIdle);
count--;
}
if (state != EPOC_AUDIO_OPEN) {
GF_LOG(GF_LOG_ERROR, GF_LOG_MMIO, ("[EPOCAudio] Failed to open sound device - is it present?\n"));
return GF_NOT_SUPPORTED;
}
TRAP(res, m_stream->SetAudioPropertiesL(epoc_sr, stereo ? TMdaAudioDataSettings::EChannelsStereo : TMdaAudioDataSettings::EChannelsMono) );
m_stream->SetPriority(EPriorityAbsoluteHigh, EMdaPriorityPreferenceTime );
m_stream->SetVolume(init_vol * m_stream->MaxVolume() / 100);
current_buffer = nb_buffers_queued = 0;
GF_LOG(GF_LOG_DEBUG, GF_LOG_MMIO, ("[EPOCAudio] output audio stream ready - sample rate %d - %d channels\n", sample_rate, stereo ? 2 : 1));
return GF_OK;
}
pj_status_t CPjAudioOutputEngine::StartPlay()
{
// Ignore command if playing is in progress.
if (state_ == STATE_ACTIVE)
return PJ_SUCCESS;
// Destroy existing stream.
if (iOutputStream_) delete iOutputStream_;
iOutputStream_ = NULL;
// Create the stream
TRAPD(err, iOutputStream_ = CMdaAudioOutputStream::NewL(*this));
if (err != KErrNone)
return PJ_RETURN_OS_ERROR(err);
// Initialize settings.
TMdaAudioDataSettings iStreamSettings;
iStreamSettings.iChannels =
get_channel_cap(parentStrm_->param.channel_count);
iStreamSettings.iSampleRate =
get_clock_rate_cap(parentStrm_->param.clock_rate);
pj_assert(iStreamSettings.iChannels != 0 &&
iStreamSettings.iSampleRate != 0);
PJ_LOG(4,(THIS_FILE, "Opening sound device for playback, "
"clock rate=%d, channel count=%d..",
parentStrm_->param.clock_rate,
parentStrm_->param.channel_count));
// Open stream.
lastError_ = KRequestPending;
iOutputStream_->Open(&iStreamSettings);
#if defined(PJMEDIA_AUDIO_DEV_MDA_USE_SYNC_START) && \
PJMEDIA_AUDIO_DEV_MDA_USE_SYNC_START != 0
startAsw_.Start();
#endif
// Success
PJ_LOG(4,(THIS_FILE, "Sound playback started"));
return PJ_SUCCESS;
}