/***********************************************************************
* hb_work_encCoreAudio_init
***********************************************************************
*
**********************************************************************/
int encCoreAudioInit(hb_work_object_t *w, hb_job_t *job, enum AAC_MODE mode)
{
hb_work_private_t *pv = calloc(1, sizeof(hb_work_private_t));
hb_audio_t *audio = w->audio;
AudioStreamBasicDescription input, output;
UInt32 tmp, tmpsiz = sizeof(tmp);
OSStatus err;
w->private_data = pv;
pv->job = job;
// pass the number of channels used into the private work data
pv->nchannels =
hb_mixdown_get_discrete_channel_count(audio->config.out.mixdown);
bzero(&input, sizeof(AudioStreamBasicDescription));
input.mSampleRate = (Float64)audio->config.out.samplerate;
input.mFormatID = kAudioFormatLinearPCM;
input.mFormatFlags = (kLinearPCMFormatFlagIsFloat|kAudioFormatFlagsNativeEndian);
input.mBytesPerPacket = 4 * pv->nchannels;
input.mFramesPerPacket = 1;
input.mBytesPerFrame = input.mBytesPerPacket * input.mFramesPerPacket;
input.mChannelsPerFrame = pv->nchannels;
input.mBitsPerChannel = 32;
bzero(&output, sizeof(AudioStreamBasicDescription));
switch (mode)
{
case AAC_MODE_HE:
output.mFormatID = kAudioFormatMPEG4AAC_HE;
break;
case AAC_MODE_LC:
default:
output.mFormatID = kAudioFormatMPEG4AAC;
break;
}
output.mSampleRate = (Float64)audio->config.out.samplerate;
output.mChannelsPerFrame = pv->nchannels;
// let CoreAudio decide the rest
// initialise encoder
err = AudioConverterNew(&input, &output, &pv->converter);
if (err != noErr)
{
// Retry without the samplerate
bzero(&output, sizeof(AudioStreamBasicDescription));
switch (mode)
{
case AAC_MODE_HE:
output.mFormatID = kAudioFormatMPEG4AAC_HE;
break;
case AAC_MODE_LC:
default:
output.mFormatID = kAudioFormatMPEG4AAC;
break;
}
output.mChannelsPerFrame = pv->nchannels;
err = AudioConverterNew(&input, &output, &pv->converter);
if (err != noErr)
{
hb_log("Error creating an AudioConverter err=%"PRId64" output.mBytesPerFrame=%"PRIu64"",
(int64_t)err, (uint64_t)output.mBytesPerFrame);
*job->done_error = HB_ERROR_UNKNOWN;
*job->die = 1;
return -1;
}
}
// set encoder quality to maximum
tmp = kAudioConverterQuality_Max;
AudioConverterSetProperty(pv->converter, kAudioConverterCodecQuality,
sizeof(tmp), &tmp);
if (audio->config.out.bitrate > 0)
{
// set encoder bitrate control mode to constrained variable
tmp = kAudioCodecBitRateControlMode_VariableConstrained;
AudioConverterSetProperty(pv->converter,
kAudioCodecPropertyBitRateControlMode,
sizeof(tmp), &tmp);
// get available bitrates
AudioValueRange *bitrates;
ssize_t bitrateCounts;
err = AudioConverterGetPropertyInfo(pv->converter,
kAudioConverterApplicableEncodeBitRates,
&tmpsiz, NULL);
bitrates = malloc(tmpsiz);
err = AudioConverterGetProperty(pv->converter,
kAudioConverterApplicableEncodeBitRates,
&tmpsiz, bitrates);
bitrateCounts = tmpsiz / sizeof(AudioValueRange);
// set bitrate
tmp = audio->config.out.bitrate * 1000;
if (tmp < bitrates[0].mMinimum)
tmp = bitrates[0].mMinimum;
if (tmp > bitrates[bitrateCounts-1].mMinimum)
tmp = bitrates[bitrateCounts-1].mMinimum;
free(bitrates);
if (tmp != audio->config.out.bitrate * 1000)
{
hb_log("encCoreAudioInit: sanitizing track %d audio bitrate %d to %"PRIu32"",
audio->config.out.track, audio->config.out.bitrate, tmp / 1000);
}
AudioConverterSetProperty(pv->converter,
kAudioConverterEncodeBitRate,
sizeof(tmp), &tmp);
}
else if (audio->config.out.quality >= 0)
{
if (mode != AAC_MODE_LC)
{
hb_error("encCoreAudioInit: internal error, VBR set but not applicable");
return 1;
}
// set encoder bitrate control mode to variable
tmp = kAudioCodecBitRateControlMode_Variable;
AudioConverterSetProperty(pv->converter,
kAudioCodecPropertyBitRateControlMode,
sizeof(tmp), &tmp);
// set quality
tmp = audio->config.out.quality;
AudioConverterSetProperty(pv->converter,
kAudioCodecPropertySoundQualityForVBR,
sizeof(tmp), &tmp);
}
else
{
hb_error("encCoreAudioInit: internal error, bitrate/quality not set");
return 1;
}
// get real input
tmpsiz = sizeof(input);
AudioConverterGetProperty(pv->converter,
kAudioConverterCurrentInputStreamDescription,
&tmpsiz, &input);
// get real output
tmpsiz = sizeof(output);
AudioConverterGetProperty(pv->converter,
kAudioConverterCurrentOutputStreamDescription,
&tmpsiz, &output);
// set sizes
pv->isamplesiz = input.mBytesPerPacket;
pv->isamples = output.mFramesPerPacket;
pv->osamplerate = output.mSampleRate;
audio->config.out.samples_per_frame = pv->isamples;
// channel remapping
pv->remap = hb_audio_remap_init(AV_SAMPLE_FMT_FLT, &hb_aac_chan_map,
audio->config.in.channel_map);
if (pv->remap == NULL)
{
hb_error("encCoreAudioInit: hb_audio_remap_init() failed");
}
uint64_t layout = hb_ff_mixdown_xlat(audio->config.out.mixdown, NULL);
hb_audio_remap_set_channel_layout(pv->remap, layout);
// get maximum output size
AudioConverterGetProperty(pv->converter,
kAudioConverterPropertyMaximumOutputPacketSize,
&tmpsiz, &tmp);
pv->omaxpacket = tmp;
// get magic cookie (elementary stream descriptor)
tmp = HB_CONFIG_MAX_SIZE;
AudioConverterGetProperty(pv->converter,
kAudioConverterCompressionMagicCookie,
&tmp, w->config->extradata.bytes);
// CoreAudio returns a complete ESDS, but we only need
// the DecoderSpecific info.
UInt8* buffer = NULL;
ReadESDSDescExt(w->config->extradata.bytes, &buffer, &tmpsiz, 0);
w->config->extradata.length = tmpsiz;
memmove(w->config->extradata.bytes, buffer, w->config->extradata.length);
free(buffer);
pv->list = hb_list_init();
pv->buf = NULL;
return 0;
}
/***********************************************************************
* hb_work_encCoreAudio_init
***********************************************************************
*
**********************************************************************/
int encCoreAudioInit( hb_work_object_t * w, hb_job_t * job, enum AAC_MODE mode )
{
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
hb_audio_t * audio = w->audio;
AudioStreamBasicDescription input, output;
UInt32 tmp, tmpsiz = sizeof( tmp );
OSStatus err;
w->private_data = pv;
pv->job = job;
// pass the number of channels used into the private work data
pv->nchannels = HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT( audio->config.out.mixdown );
bzero( &input, sizeof( AudioStreamBasicDescription ) );
input.mSampleRate = ( Float64 ) audio->config.out.samplerate;
input.mFormatID = kAudioFormatLinearPCM;
input.mFormatFlags = kLinearPCMFormatFlagIsFloat | kAudioFormatFlagsNativeEndian;
input.mBytesPerPacket = 4 * pv->nchannels;
input.mFramesPerPacket = 1;
input.mBytesPerFrame = input.mBytesPerPacket * input.mFramesPerPacket;
input.mChannelsPerFrame = pv->nchannels;
input.mBitsPerChannel = 32;
bzero( &output, sizeof( AudioStreamBasicDescription ) );
switch ( mode )
{
case AAC_MODE_HE:
output.mFormatID = kAudioFormatMPEG4AAC_HE;
break;
case AAC_MODE_LC:
default:
output.mFormatID = kAudioFormatMPEG4AAC;
break;
}
output.mSampleRate = ( Float64 ) audio->config.out.samplerate;
output.mChannelsPerFrame = pv->nchannels;
// let CoreAudio decide the rest...
// initialise encoder
err = AudioConverterNew( &input, &output, &pv->converter );
if( err != noErr)
{
// Retry without the samplerate
bzero( &output, sizeof( AudioStreamBasicDescription ) );
switch ( mode )
{
case AAC_MODE_HE:
output.mFormatID = kAudioFormatMPEG4AAC_HE;
break;
case AAC_MODE_LC:
default:
output.mFormatID = kAudioFormatMPEG4AAC;
break;
}
output.mChannelsPerFrame = pv->nchannels;
err = AudioConverterNew( &input, &output, &pv->converter );
if( err != noErr)
{
hb_log( "Error creating an AudioConverter err=%"PRId64" %"PRIu64, (int64_t)err, (uint64_t)output.mBytesPerFrame );
*job->die = 1;
return 0;
}
}
if( ( audio->config.out.mixdown == HB_AMIXDOWN_6CH ) && ( audio->config.in.codec == HB_ACODEC_AC3) )
{
SInt32 channelMap[6] = { 2, 1, 3, 4, 5, 0 };
AudioConverterSetProperty( pv->converter, kAudioConverterChannelMap,
sizeof( channelMap ), channelMap );
}
// set encoder quality to maximum
tmp = kAudioConverterQuality_Max;
AudioConverterSetProperty( pv->converter, kAudioConverterCodecQuality,
sizeof( tmp ), &tmp );
// set encoder bitrate control mode to constrained variable
tmp = kAudioCodecBitRateControlMode_VariableConstrained;
AudioConverterSetProperty( pv->converter, kAudioCodecPropertyBitRateControlMode,
sizeof( tmp ), &tmp );
// get available bitrates
AudioValueRange *bitrates;
ssize_t bitrateCounts;
err = AudioConverterGetPropertyInfo( pv->converter, kAudioConverterApplicableEncodeBitRates,
&tmpsiz, NULL);
bitrates = malloc( tmpsiz );
err = AudioConverterGetProperty( pv->converter, kAudioConverterApplicableEncodeBitRates,
&tmpsiz, bitrates);
bitrateCounts = tmpsiz / sizeof( AudioValueRange );
// set bitrate
tmp = audio->config.out.bitrate * 1000;
if( tmp < bitrates[0].mMinimum )
tmp = bitrates[0].mMinimum;
if( tmp > bitrates[bitrateCounts-1].mMinimum )
tmp = bitrates[bitrateCounts-1].mMinimum;
free( bitrates );
if( tmp != audio->config.out.bitrate * 1000 )
hb_log( "encca_aac: sanitizing track %d audio bitrate %d to %"PRIu32"",
audio->config.out.track, audio->config.out.bitrate, tmp/1000 );
AudioConverterSetProperty( pv->converter, kAudioConverterEncodeBitRate,
sizeof( tmp ), &tmp );
// get real input
tmpsiz = sizeof( input );
AudioConverterGetProperty( pv->converter,
kAudioConverterCurrentInputStreamDescription,
&tmpsiz, &input );
// get real output
tmpsiz = sizeof( output );
AudioConverterGetProperty( pv->converter,
kAudioConverterCurrentOutputStreamDescription,
&tmpsiz, &output );
// set sizes
pv->isamplesiz = input.mBytesPerPacket;
pv->isamples = output.mFramesPerPacket;
pv->osamplerate = output.mSampleRate;
// get maximum output size
AudioConverterGetProperty( pv->converter,
kAudioConverterPropertyMaximumOutputPacketSize,
&tmpsiz, &tmp );
pv->omaxpacket = tmp;
// get magic cookie (elementary stream descriptor)
tmp = HB_CONFIG_MAX_SIZE;
AudioConverterGetProperty( pv->converter,
kAudioConverterCompressionMagicCookie,
&tmp, w->config->aac.bytes );
// CoreAudio returns a complete ESDS, but we only need
// the DecoderSpecific info.
UInt8* buffer = NULL;
ReadESDSDescExt(w->config->aac.bytes, &buffer, &tmpsiz, 0);
w->config->aac.length = tmpsiz;
memmove( w->config->aac.bytes, buffer,
w->config->aac.length );
pv->list = hb_list_init();
pv->buf = NULL;
return 0;
}
