status_t SoftAACEncoder2::setAudioParams() {
// We call this whenever sample rate, number of channels or bitrate change
// in reponse to setParameter calls.
ALOGV("setAudioParams: %lu Hz, %lu channels, %lu bps",
mSampleRate, mNumChannels, mBitRate);
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_AOT,
getAOTFromProfile(mAACProfile))) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_SAMPLERATE, mSampleRate)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_BITRATE, mBitRate)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_CHANNELMODE,
getChannelMode(mNumChannels))) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_TRANSMUX, TT_MP4_RAW)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
return OK;
}
OutputDeviceNode::OutputDeviceNode( const DeviceRef &device, const Format &format )
: OutputNode( format ), mDevice( device )
{
if( ! mDevice ) {
string errorMsg = "Empty DeviceRef.";
if( ! audio::Device::getDefaultOutput() )
errorMsg += " Also, no default output Device so perhaps there is no available hardware output.";
throw AudioDeviceExc( errorMsg );
}
// listen to the notifications sent by device property changes in order to update the audio graph.
mWillChangeConn = mDevice->getSignalParamsWillChange().connect( bind( &OutputDeviceNode::deviceParamsWillChange, this ) );
mDidChangeConn = mDevice->getSignalParamsDidChange().connect( bind( &OutputDeviceNode::deviceParamsDidChange, this ) );
mInterruptionBeganConn = Context::deviceManager()->getSignalInterruptionBegan().connect( [this] { disable(); } );
mInterruptionEndedConn = Context::deviceManager()->getSignalInterruptionEnded().connect( [this] { enable(); } );
size_t deviceNumChannels = mDevice->getNumOutputChannels();
// If number of channels hasn't been specified, default to 2 (or 1 if that is all that is available).
if( getChannelMode() != ChannelMode::SPECIFIED ) {
setChannelMode( ChannelMode::SPECIFIED );
setNumChannels( std::min( deviceNumChannels, (size_t)2 ) );
}
// Double check the device has enough channels to support what was requested, which may not be the case if the user asked for more than what is available.
if( deviceNumChannels < getNumChannels() )
throw AudioFormatExc( string( "Device can not accommodate " ) + to_string( deviceNumChannels ) + " output channels." );
}
status_t SoftAACEncoder2::setAudioParams() {
// We call this whenever sample rate, number of channels, bitrate or SBR mode change
// in reponse to setParameter calls.
ALOGV("setAudioParams: %u Hz, %u channels, %u bps, %i sbr mode, %i sbr ratio",
mSampleRate, mNumChannels, mBitRate, mSBRMode, mSBRRatio);
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_AOT,
getAOTFromProfile(mAACProfile))) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_SAMPLERATE, mSampleRate)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_BITRATE, mBitRate)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_CHANNELMODE,
getChannelMode(mNumChannels))) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_TRANSMUX, TT_MP4_RAW)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
if (mSBRMode != -1 && mAACProfile == OMX_AUDIO_AACObjectELD) {
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_SBR_MODE, mSBRMode)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
}
/* SBR ratio parameter configurations:
0: Default configuration wherein SBR ratio is configured depending on audio object type by
the FDK.
1: Downsampled SBR (default for ELD)
2: Dualrate SBR (default for HE-AAC)
*/
if (AACENC_OK != aacEncoder_SetParam(mAACEncoder, AACENC_SBR_RATIO, mSBRRatio)) {
ALOGE("Failed to set AAC encoder parameters");
return UNKNOWN_ERROR;
}
return OK;
}
OutputDeviceNode::OutputDeviceNode( const DeviceRef &device, const Format &format )
: OutputNode( format ), mDevice( device )
{
CI_ASSERT( mDevice );
// listen to the notifications sent by device property changes in order to update the audio graph.
mWillChangeConn = mDevice->getSignalParamsWillChange().connect( bind( &OutputDeviceNode::deviceParamsWillChange, this ) );
mDidChangeConn = mDevice->getSignalParamsDidChange().connect( bind( &OutputDeviceNode::deviceParamsDidChange, this ) );
size_t deviceNumChannels = mDevice->getNumOutputChannels();
// If number of channels hasn't been specified, default to 2 (or 1 if that is all that is available).
if( getChannelMode() != ChannelMode::SPECIFIED ) {
setChannelMode( ChannelMode::SPECIFIED );
setNumChannels( std::min( deviceNumChannels, (size_t)2 ) );
}
// Double check the device has enough channels to support what was requested, which may not be the case if the user asked for more than what is available.
if( deviceNumChannels < getNumChannels() )
throw AudioFormatExc( string( "Device can not accommodate " ) + to_string( deviceNumChannels ) + " output channels." );
}