void CPjAudioOutputEngine::Stop()
{
// Stop stream if it's playing
if (iOutputStream_ && state_ != STATE_INACTIVE) {
lastError_ = KRequestPending;
iOutputStream_->Stop();
// Wait until it's actually stopped
while (lastError_ == KRequestPending)
pj_symbianos_poll(-1, 100);
}
if (iOutputStream_) {
delete iOutputStream_;
iOutputStream_ = NULL;
}
if (startAsw_.IsStarted()) {
startAsw_.AsyncStop();
}
state_ = STATE_INACTIVE;
}
void CPjAudioInputEngine::Stop()
{
// If capture is in progress, stop it.
if (iInputStream_ && state_ == STATE_ACTIVE) {
lastError_ = KRequestPending;
iInputStream_->Stop();
// Wait until it's actually stopped
while (lastError_ == KRequestPending)
pj_symbianos_poll(-1, 100);
}
if (iInputStream_) {
delete iInputStream_;
iInputStream_ = NULL;
}
if (startAsw_.IsStarted()) {
startAsw_.AsyncStop();
}
state_ = STATE_INACTIVE;
}
void CPjAudioInputEngine::MaiscOpenComplete(TInt aError)
{
if (startAsw_.IsStarted()) {
startAsw_.AsyncStop();
}
lastError_ = aError;
if (aError != KErrNone) {
snd_perror("Error in MaiscOpenComplete()", aError);
return;
}
/* Apply input volume setting if specified */
if (parentStrm_->param.flags &
PJMEDIA_AUD_DEV_CAP_INPUT_VOLUME_SETTING)
{
stream_set_cap(&parentStrm_->base,
PJMEDIA_AUD_DEV_CAP_INPUT_VOLUME_SETTING,
&parentStrm_->param.input_vol);
}
// set stream priority to normal and time sensitive
iInputStream_->SetPriority(EPriorityNormal,
EMdaPriorityPreferenceTime);
// Read the first frame.
TPtr8 & frm = GetFrame();
TRAPD(err2, iInputStream_->ReadL(frm));
if (err2) {
PJ_LOG(4,(THIS_FILE, "Exception in iInputStream_->ReadL()"));
lastError_ = err2;
return;
}
// input stream opened succesfully, set status to Active
state_ = STATE_ACTIVE;
}
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);
}
}
