diff options
Diffstat (limited to 'libhb/decdca.c')
| -rw-r--r-- | libhb/decdca.c | 100 |
1 files changed, 93 insertions, 7 deletions
diff --git a/libhb/decdca.c b/libhb/decdca.c index 28081900d..a326031dd 100644 --- a/libhb/decdca.c +++ b/libhb/decdca.c @@ -35,9 +35,11 @@ struct hb_work_private_s }; -int decdcaInit( hb_work_object_t *, hb_job_t * ); -int decdcaWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** ); -void decdcaClose( hb_work_object_t * ); +static int decdcaInit( hb_work_object_t *, hb_job_t * ); +static int decdcaWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** ); +static void decdcaClose( hb_work_object_t * ); +static int decdcaBSInfo( hb_work_object_t *, const hb_buffer_t *, + hb_work_info_t * ); hb_work_object_t hb_decdca = { @@ -45,7 +47,9 @@ hb_work_object_t hb_decdca = "DCA decoder", decdcaInit, decdcaWork, - decdcaClose + decdcaClose, + 0, + decdcaBSInfo }; /*********************************************************************** @@ -58,7 +62,7 @@ static hb_buffer_t * Decode( hb_work_object_t * w ); *********************************************************************** * Allocate the work object, initialize libdca **********************************************************************/ -int decdcaInit( hb_work_object_t * w, hb_job_t * job ) +static int decdcaInit( 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; @@ -88,7 +92,7 @@ int decdcaInit( hb_work_object_t * w, hb_job_t * job ) *********************************************************************** * Free memory **********************************************************************/ -void decdcaClose( hb_work_object_t * w ) +static void decdcaClose( hb_work_object_t * w ) { hb_work_private_t * pv = w->private_data; dca_free( pv->state ); @@ -103,7 +107,7 @@ void decdcaClose( hb_work_object_t * w ) * Add the given buffer to the data we already have, and decode as much * as we can **********************************************************************/ -int decdcaWork( hb_work_object_t * w, hb_buffer_t ** buf_in, +static int decdcaWork( hb_work_object_t * w, hb_buffer_t ** buf_in, hb_buffer_t ** buf_out ) { hb_work_private_t * pv = w->private_data; @@ -214,3 +218,85 @@ static hb_buffer_t * Decode( hb_work_object_t * w ) return buf; } + +static int decdcaBSInfo( hb_work_object_t *w, const hb_buffer_t *b, + hb_work_info_t *info ) +{ + int i, flags, rate, bitrate, frame_length; + dca_state_t * state = dca_init( 0 ); + + memset( info, 0, sizeof(*info) ); + + /* since DCA frames don't line up with MPEG ES frames scan the + * entire frame for an DCA sync pattern. */ + for ( i = 0; i < b->size - 7; ++i ) + { + if( dca_syncinfo( state, &b->data[i], &flags, &rate, &bitrate, + &frame_length ) ) + { + break; + } + } + if ( i >= b->size - 7 ) + { + /* didn't find DCA sync */ + return 0; + } + + info->name = "DCA"; + info->rate = rate; + info->rate_base = 1; + info->bitrate = bitrate; + info->flags = flags; + + if ( ( flags & DCA_CHANNEL_MASK) == DCA_DOLBY ) + { + info->flags |= AUDIO_F_DOLBY; + } + + switch( flags & DCA_CHANNEL_MASK ) + { + /* mono sources */ + case DCA_MONO: + info->channel_layout = HB_INPUT_CH_LAYOUT_MONO; + break; + /* stereo input */ + case DCA_CHANNEL: + case DCA_STEREO: + case DCA_STEREO_SUMDIFF: + case DCA_STEREO_TOTAL: + info->channel_layout = HB_INPUT_CH_LAYOUT_STEREO; + break; + /* 3F/2R input */ + case DCA_3F2R: + info->channel_layout = HB_INPUT_CH_LAYOUT_3F2R; + break; + /* 3F/1R input */ + case DCA_3F1R: + info->channel_layout = HB_INPUT_CH_LAYOUT_3F1R; + break; + /* other inputs */ + case DCA_3F: + info->channel_layout = HB_INPUT_CH_LAYOUT_3F; + break; + case DCA_2F1R: + info->channel_layout = HB_INPUT_CH_LAYOUT_2F1R; + break; + case DCA_2F2R: + info->channel_layout = HB_INPUT_CH_LAYOUT_2F2R; + break; + case DCA_4F2R: + info->channel_layout = HB_INPUT_CH_LAYOUT_4F2R; + break; + /* unknown */ + default: + info->channel_layout = HB_INPUT_CH_LAYOUT_STEREO; + } + + if (flags & DCA_LFE) + { + info->channel_layout |= HB_INPUT_CH_LAYOUT_HAS_LFE; + } + + return 1; +} |