void CPjAudioOutputEngine::MaoscBufferCopied(TInt aError,
const TDesC8& aBuffer)
{
PJ_UNUSED_ARG(aBuffer);
if (aError==KErrNone) {
// Buffer successfully written, feed another one.
// 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);
// Write to playback stream.
frame_.Set(frameBuf_, frameBufSize_);
iOutputStream_->WriteL(frame_);
} else if (aError==KErrAbort) {
// playing was aborted, due to call to CMdaAudioOutputStream::Stop()
state_ = STATE_INACTIVE;
} else {
// error writing data to output
lastError_ = aError;
state_ = STATE_INACTIVE;
snd_perror("Error in MaoscBufferCopied()", aError);
}
}
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);
}
}