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;
}
void CPjAudioOutputEngine::MaoscOpenComplete(TInt aError)
{
if (startAsw_.IsStarted()) {
startAsw_.AsyncStop();
}
lastError_ = aError;
if (aError==KErrNone) {
// set stream properties, 16bit 8KHz mono
TMdaAudioDataSettings iSettings;
iSettings.iChannels =
get_channel_cap(parentStrm_->param.channel_count);
iSettings.iSampleRate =
get_clock_rate_cap(parentStrm_->param.clock_rate);
iOutputStream_->SetAudioPropertiesL(iSettings.iSampleRate,
iSettings.iChannels);
/* Apply output volume setting if specified */
if (parentStrm_->param.flags &
PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING)
{
stream_set_cap(&parentStrm_->base,
PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING,
&parentStrm_->param.output_vol);
} else {
// set volume to 1/2th of stream max volume
iOutputStream_->SetVolume(iOutputStream_->MaxVolume()/2);
}
// set stream priority to normal and time sensitive
iOutputStream_->SetPriority(EPriorityNormal,
EMdaPriorityPreferenceTime);
// Call callback to retrieve frame from upstream.
pjmedia_frame f;
pj_status_t status;
f.type = PJMEDIA_FRAME_TYPE_AUDIO;
f.buf = frameBuf_;
f.size = frameBufSize_;
f.timestamp.u32.lo = timestamp_;
f.bit_info = 0;
status = playCb_(this->userData_, &f);
if (status != PJ_SUCCESS) {
this->Stop();
return;
}
if (f.type != PJMEDIA_FRAME_TYPE_AUDIO)
pj_bzero(frameBuf_, frameBufSize_);
// Increment timestamp.
timestamp_ += (frameBufSize_ / BYTES_PER_SAMPLE);
// issue WriteL() to write the first audio data block,
// subsequent calls to WriteL() will be issued in
// MMdaAudioOutputStreamCallback::MaoscBufferCopied()
// until whole data buffer is written.
frame_.Set(frameBuf_, frameBufSize_);
iOutputStream_->WriteL(frame_);
// output stream opened succesfully, set status to Active
state_ = STATE_ACTIVE;
} else {
snd_perror("Error in MaoscOpenComplete()", aError);
}
}