- // if we are doing passthru, and the input codec is not the same as the output
- // codec, then remove this audio from the job. If we're not doing passthru and
- // the input codec is the 'internal' ffmpeg codec, make sure that only one
- // audio references that audio stream since the codec context is specific to
- // the audio id & multiple copies of the same stream will garble the audio
- // or cause aborts.
- uint8_t aud_id_uses[MAX_STREAMS];
- memset( aud_id_uses, 0, sizeof(aud_id_uses) );
- for( i = 0; i < hb_list_count( title->list_audio ); )
- {
- audio = hb_list_item( title->list_audio, i );
- if( ( ( audio->config.out.codec == HB_ACODEC_AC3 ) && ( audio->config.in.codec != HB_ACODEC_AC3 ) ) ||
- ( ( audio->config.out.codec == HB_ACODEC_DCA ) && ( audio->config.in.codec != HB_ACODEC_DCA ) ) )
- {
- hb_log( "Passthru requested and input codec is not the same as output codec for track %d",
- audio->config.out.track );
- hb_list_rem( title->list_audio, audio );
- free( audio );
- continue;
- }
- if ( audio->config.in.codec == HB_ACODEC_FFMPEG )
- {
- if ( aud_id_uses[audio->id] )
- {
- hb_log( "Multiple decodes of audio id %d, removing track %d",
- audio->id, audio->config.out.track );
- hb_list_rem( title->list_audio, audio );
- free( audio );
- continue;
- }
- ++aud_id_uses[audio->id];
- }
- /* Adjust output track number, in case we removed one.
- * Output tracks sadly still need to be in sequential order.
- */
- audio->config.out.track = i++;
- }
-
- int requested_mixdown = 0;
- int requested_mixdown_index = 0;
-
- for( i = 0; i < hb_list_count( title->list_audio ); i++ )
- {
- audio = hb_list_item( title->list_audio, i );
-
- if( audio->config.out.codec != audio->config.in.codec )
- {
- /* sense-check the current mixdown options */
-
- /* log the requested mixdown */
- for (j = 0; j < hb_audio_mixdowns_count; j++) {
- if (hb_audio_mixdowns[j].amixdown == audio->config.out.mixdown) {
- requested_mixdown = audio->config.out.mixdown;
- requested_mixdown_index = j;
- }
- }
-
- /* sense-check the requested mixdown */
-
- if( audio->config.out.mixdown == 0 &&
- audio->config.out.codec != HB_ACODEC_AC3 &&
- audio->config.out.codec != HB_ACODEC_DCA )
- {
- /*
- * Mixdown wasn't specified and this is not pass-through,
- * set a default mixdown of stereo.
- */
- audio->config.out.mixdown = HB_AMIXDOWN_STEREO;
- }
-
- // Here we try to sanitize the audio input to output mapping.
- // Constraints are:
- // 1. only the AC3 & DCA decoder libraries currently support mixdown
- // 2. the lame encoder library only supports stereo.
- // So if the encoder is lame we need the output to be stereo (or multichannel
- // matrixed into stereo like dpl). If the decoder is not AC3 or DCA the
- // encoder has to handle the input format since we can't do a mixdown.
-#define CAN_MIXDOWN(a) ( a->config.in.codec & (HB_ACODEC_AC3|HB_ACODEC_DCA) )
-#define STEREO_ONLY(a) ( a->config.out.codec & HB_ACODEC_LAME )
-
- switch (audio->config.in.channel_layout & HB_INPUT_CH_LAYOUT_DISCRETE_NO_LFE_MASK)
- {
- // stereo input or something not handled below
- default:
- case HB_INPUT_CH_LAYOUT_STEREO:
- // mono gets mixed up to stereo & more than stereo gets mixed down
- if ( STEREO_ONLY( audio ) ||
- audio->config.out.mixdown > HB_AMIXDOWN_STEREO)
- {
- audio->config.out.mixdown = HB_AMIXDOWN_STEREO;
- }
- break;
-
- // mono input
- case HB_INPUT_CH_LAYOUT_MONO:
- if ( STEREO_ONLY( audio ) )
- {
- if ( !CAN_MIXDOWN( audio ) )
- {
- // XXX we're hosed - we can't mix up & lame can't handle
- // the input format. The user shouldn't be able to make
- // this choice. It's too late to do anything about it now
- // so complain in the log & let things abort in lame.
- hb_log( "ERROR - can't use lame mp3 audio output with "
- "mono audio stream %x - output will be messed up",
- audio->id );
- }
- audio->config.out.mixdown = HB_AMIXDOWN_STEREO;
- }
- else
- {
- // everything else passes through
- audio->config.out.mixdown = HB_AMIXDOWN_MONO;
- }
- break;
-
- // dolby (DPL1 aka Dolby Surround = 4.0 matrix-encoded) input
- // the A52 flags don't allow for a way to distinguish between DPL1 and
- // DPL2 on a DVD so we always assume a DPL1 source for A52_DOLBY.
- case HB_INPUT_CH_LAYOUT_DOLBY:
- if ( STEREO_ONLY( audio ) || !CAN_MIXDOWN( audio ) ||
- audio->config.out.mixdown > HB_AMIXDOWN_DOLBY )
- {
- audio->config.out.mixdown = HB_AMIXDOWN_DOLBY;
- }
- break;
-
- // 4 channel discrete
- case HB_INPUT_CH_LAYOUT_2F2R:
- case HB_INPUT_CH_LAYOUT_3F1R:
- if ( CAN_MIXDOWN( audio ) )
- {
- if ( STEREO_ONLY( audio ) ||
- audio->config.out.mixdown > HB_AMIXDOWN_DOLBY )
- {
- audio->config.out.mixdown = HB_AMIXDOWN_DOLBY;
- }
- }
- else
- {
- // XXX we can't mixdown & don't have any way to specify
- // 4 channel discrete output so we're hosed.
- hb_log( "ERROR - can't handle 4 channel discrete audio stream "
- "%x - output will be messed up", audio->id );
- }
- break;
-
- // 5 or 6 channel discrete
- case HB_INPUT_CH_LAYOUT_3F2R:
- if ( CAN_MIXDOWN( audio ) )
- {
- if ( STEREO_ONLY( audio ) )
- {
- if ( audio->config.out.mixdown < HB_AMIXDOWN_STEREO )
- {
- audio->config.out.mixdown = HB_AMIXDOWN_STEREO;
- }
- else if ( audio->config.out.mixdown > HB_AMIXDOWN_DOLBYPLII )
- {
- audio->config.out.mixdown = HB_AMIXDOWN_DOLBYPLII;
- }
- }
- else if ( ! ( audio->config.in.channel_layout &
- HB_INPUT_CH_LAYOUT_HAS_LFE ) )
- {
- // we don't do 5 channel discrete so mixdown to DPLII
- audio->config.out.mixdown = HB_AMIXDOWN_DOLBYPLII;
- }
- }
- else if ( ! ( audio->config.in.channel_layout &
- HB_INPUT_CH_LAYOUT_HAS_LFE ) )
- {
- // XXX we can't mixdown & don't have any way to specify
- // 5 channel discrete output so we're hosed.
- hb_log( "ERROR - can't handle 5 channel discrete audio stream "
- "%x - output will be messed up", audio->id );
- }
- else
- {
- // we can't mixdown so force 6 channel discrete
- audio->config.out.mixdown = HB_AMIXDOWN_6CH;
- }
- break;
- }
-
- /* log the output mixdown */
- for (j = 0; j < hb_audio_mixdowns_count; j++) {
- if (hb_audio_mixdowns[j].amixdown == audio->config.out.mixdown) {
- if ( audio->config.out.mixdown != requested_mixdown )
- {
- hb_log("work: sanitizing track %i mixdown %s to %s", i, hb_audio_mixdowns[requested_mixdown_index].human_readable_name, hb_audio_mixdowns[j].human_readable_name);
- }
- break;
- }
- }
- }
-
- if (audio->config.out.codec == HB_ACODEC_VORBIS)
- audio->priv.config.vorbis.language = audio->config.lang.simple;
-
- /* set up the audio work structures */
- audio->priv.fifo_in = hb_fifo_init( 32 );
- audio->priv.fifo_raw = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
- audio->priv.fifo_sync = hb_fifo_init( 32 );
- audio->priv.fifo_out = hb_fifo_init( 8 * FIFO_CPU_MULT * cpu_count );
-
-
- /*
- * Audio Decoder Thread
- */
- if ( ( w = hb_codec_decoder( audio->config.in.codec ) ) == NULL )