/***********************************************************************
* hb_work_encfaac_init
***********************************************************************
*
**********************************************************************/
int encfaacInit( hb_work_object_t * w, hb_job_t * job )
{
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
hb_audio_t * audio = w->audio;
faacEncConfigurationPtr cfg;
uint8_t * bytes;
unsigned long length;
w->private_data = pv;
pv->job = job;
/* pass the number of channels used into the private work data */
pv->out_discrete_channels = HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->config.out.mixdown);
/* if the sample rate is 'auto' and that has given us an invalid output */
/* rate, map it to the next highest output rate or 48K if above the highest. */
int rate_index = find_samplerate(audio->config.out.samplerate);
if ( audio->config.out.samplerate != valid_rates[rate_index] )
{
int rate = valid_rates[valid_rates[rate_index]? rate_index : rate_index - 1];
hb_log( "encfaac changing output samplerate from %d to %d",
audio->config.out.samplerate, rate );
audio->config.out.samplerate = rate;
/* if the new rate is over the max bandwidth per channel limit */
/* lower the bandwidth. */
double bw = audio->config.out.bitrate * 1000 / pv->out_discrete_channels;
if ( bw > (double)rate * (6144./1024.) )
{
int newbr = (double)rate * (6.144/1024.) * pv->out_discrete_channels;
hb_log( "encfaac changing output bitrate from %d to %d",
audio->config.out.bitrate, newbr );
audio->config.out.bitrate = newbr;
}
}
pv->faac = faacEncOpen( audio->config.out.samplerate, pv->out_discrete_channels,
&pv->input_samples, &pv->output_bytes );
pv->buf = malloc( pv->input_samples * sizeof( float ) );
pv->obuf = malloc( pv->output_bytes );
pv->framedur = 90000.0 * pv->input_samples /
( audio->config.out.samplerate * pv->out_discrete_channels );
audio->config.out.samples_per_frame = pv->input_samples / pv->out_discrete_channels;
cfg = faacEncGetCurrentConfiguration( pv->faac );
cfg->mpegVersion = MPEG4;
cfg->aacObjectType = LOW;
cfg->allowMidside = 1;
if (pv->out_discrete_channels == 6) {
/* we are preserving 5.1 audio into 6-channel AAC,
so indicate that we have an lfe channel */
cfg->useLfe = 1;
} else {
cfg->useLfe = 0;
}
cfg->useTns = 0;
cfg->bitRate = audio->config.out.bitrate * 1000 / pv->out_discrete_channels; /* Per channel */
cfg->bandWidth = 0;
cfg->outputFormat = 0;
cfg->inputFormat = FAAC_INPUT_FLOAT;
if( ( audio->config.out.mixdown == HB_AMIXDOWN_6CH ) && ( audio->config.in.channel_map != &hb_qt_chan_map ) )
{
if( audio->config.in.channel_map == &hb_ac3_chan_map )
{
cfg->channel_map[0] = 2;
cfg->channel_map[1] = 1;
cfg->channel_map[2] = 3;
cfg->channel_map[3] = 4;
cfg->channel_map[4] = 5;
cfg->channel_map[5] = 0;
}
else if( audio->config.in.channel_map == &hb_smpte_chan_map )
{
cfg->channel_map[0] = 2;
cfg->channel_map[1] = 0;
cfg->channel_map[2] = 1;
cfg->channel_map[3] = 4;
cfg->channel_map[4] = 5;
cfg->channel_map[5] = 3;
}
}
if( !faacEncSetConfiguration( pv->faac, cfg ) )
{
hb_log( "faacEncSetConfiguration failed" );
*job->die = 1;
return 0;
}
if( faacEncGetDecoderSpecificInfo( pv->faac, &bytes, &length ) < 0 )
{
hb_log( "faacEncGetDecoderSpecificInfo failed" );
*job->die = 1;
return 0;
}
memcpy( w->config->extradata.bytes, bytes, length );
w->config->extradata.length = length;
free( bytes );
pv->list = hb_list_init();
return 0;
}
/***********************************************************************
* hb_work_encfaac_init
***********************************************************************
*
**********************************************************************/
int encfaacInit( hb_work_object_t * w, hb_job_t * job )
{
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
hb_audio_t * audio = w->audio;
faacEncConfigurationPtr cfg;
uint8_t * bytes;
unsigned long length;
w->private_data = pv;
pv->job = job;
/* pass the number of channels used into the private work data */
pv->out_discrete_channels = hb_mixdown_get_discrete_channel_count(audio->config.out.mixdown);
/* if the sample rate is 'auto' and that has given us an invalid output */
/* rate, map it to the next highest output rate or 48K if above the highest. */
int rate_index = find_samplerate(audio->config.out.samplerate);
if ( audio->config.out.samplerate != valid_rates[rate_index] )
{
int rate = valid_rates[valid_rates[rate_index]? rate_index : rate_index - 1];
hb_log( "encfaac changing output samplerate from %d to %d",
audio->config.out.samplerate, rate );
audio->config.out.samplerate = rate;
/* if the new rate is over the max bandwidth per channel limit */
/* lower the bandwidth. */
double bw = audio->config.out.bitrate * 1000 / pv->out_discrete_channels;
if ( bw > (double)rate * (6144./1024.) )
{
int newbr = (double)rate * (6.144/1024.) * pv->out_discrete_channels;
hb_log( "encfaac changing output bitrate from %d to %d",
audio->config.out.bitrate, newbr );
audio->config.out.bitrate = newbr;
}
}
pv->faac = faacEncOpen( audio->config.out.samplerate, pv->out_discrete_channels,
&pv->input_samples, &pv->output_bytes );
pv->buf = malloc( pv->input_samples * sizeof( float ) );
pv->obuf = malloc( pv->output_bytes );
pv->framedur = 90000.0 * pv->input_samples /
( audio->config.out.samplerate * pv->out_discrete_channels );
audio->config.out.samples_per_frame = pv->input_samples / pv->out_discrete_channels;
cfg = faacEncGetCurrentConfiguration( pv->faac );
cfg->mpegVersion = MPEG4;
cfg->aacObjectType = LOW;
cfg->allowMidside = 1;
// channel remapping, LFE
uint64_t layout;
int *remap_table;
layout = hb_ff_mixdown_xlat(audio->config.out.mixdown, NULL);
remap_table = hb_audio_remap_build_table(layout, &hb_aac_chan_map,
audio->config.in.channel_map);
if (remap_table != NULL)
{
// faac does its own remapping
memcpy(cfg->channel_map, remap_table,
pv->out_discrete_channels * sizeof(int));
free(remap_table);
}
cfg->useLfe = !!(layout & AV_CH_LOW_FREQUENCY);
cfg->useTns = 0;
cfg->bitRate = audio->config.out.bitrate * 1000 / pv->out_discrete_channels; /* Per channel */
cfg->bandWidth = 0;
cfg->outputFormat = 0;
cfg->inputFormat = FAAC_INPUT_FLOAT;
if( !faacEncSetConfiguration( pv->faac, cfg ) )
{
hb_log( "faacEncSetConfiguration failed" );
*job->die = 1;
return 0;
}
if( faacEncGetDecoderSpecificInfo( pv->faac, &bytes, &length ) < 0 )
{
hb_log( "faacEncGetDecoderSpecificInfo failed" );
*job->die = 1;
return 0;
}
memcpy( w->config->extradata.bytes, bytes, length );
w->config->extradata.length = length;
free( bytes );
pv->list = hb_list_init();
return 0;
}
