libhb/reader.c

   1 /* $Id: reader.c,v 1.21 2005/11/25 15:05:25 titer Exp $
   2
   3    This file is part of the HandBrake source code.
   4    Homepage: <http://handbrake.m0k.org/>.
   5    It may be used under the terms of the GNU General Public License. */
   6
   7 #include "hb.h"
   8
   9 typedef struct
  10 {
  11     hb_job_t     * job;
  12     hb_title_t   * title;
  13     volatile int * die;
  14
  15     hb_dvd_t     * dvd;
  16     hb_buffer_t  * ps;
  17     hb_stream_t  * stream;
  18
  19 } hb_reader_t;
  20
  21 /***********************************************************************
  22  * Local prototypes
  23  **********************************************************************/
  24 static void        ReaderFunc( void * );
  25 static hb_fifo_t * GetFifoForId( hb_job_t * job, int id );
  26
  27 /***********************************************************************
  28  * hb_reader_init
  29  ***********************************************************************
  30  *
  31  **********************************************************************/
  32 hb_thread_t * hb_reader_init( hb_job_t * job )
  33 {
  34     hb_reader_t * r;
  35
  36     r = calloc( sizeof( hb_reader_t ), 1 );
  37
  38     r->job   = job;
  39     r->title = job->title;
  40     r->die   = job->die;
  41
  42     return hb_thread_init( "reader", ReaderFunc, r,
  43                            HB_NORMAL_PRIORITY );
  44 }
  45
  46 /***********************************************************************
  47  * ReaderFunc
  48  ***********************************************************************
  49  *
  50  **********************************************************************/
  51 static void ReaderFunc( void * _r )
  52 {
  53     hb_reader_t  * r = _r;
  54     hb_fifo_t    * fifo;
  55     hb_buffer_t  * buf;
  56     hb_list_t    * list;
  57     int            chapter = -1;
  58
  59     if( !( r->dvd = hb_dvd_init( r->title->dvd ) ) )
  60     {
  61         if ( !(r->stream = hb_stream_open(r->title->dvd) ) )
  62         {
  63           return;
  64         }
  65     }
  66
  67     if (r->dvd)
  68     {
  69       if( !hb_dvd_start( r->dvd, r->title->index, r->job->chapter_start ) )
  70       {
  71           hb_dvd_close( &r->dvd );
  72           return;
  73       }
  74     }
  75
  76         if (r->stream)
  77         {
  78                 // At this point r->audios[0] gives us the index of the selected audio track for output track 0
  79                 // we cannot effectively demux multiple PID's into the seperate output tracks unfortunately
  80                 // so we'll just specifiy things here for a single track.
  81                 hb_stream_set_selected_audio_pid_index(r->stream, r->job->audios[0]);
  82         }
  83
  84     list  = hb_list_init();
  85     r->ps = hb_buffer_init( HB_DVD_READ_BUFFER_SIZE );
  86
  87     while( !*r->die && !r->job->done )
  88     {
  89         if (r->dvd)
  90           chapter = hb_dvd_chapter( r->dvd );
  91         else if (r->stream)
  92           chapter = 1;
  93
  94         if( chapter < 0 )
  95         {
  96             hb_log( "reader: end of the title reached" );
  97             break;
  98         }
  99         if( chapter > r->job->chapter_end )
 100         {
 101             hb_log( "reader: end of chapter %d reached (%d)",
 102                     r->job->chapter_end, chapter );
 103             break;
 104         }
 105
 106         if (r->dvd)
 107         {
 108           if( !hb_dvd_read( r->dvd, r->ps ) )
 109           {
 110               break;
 111           }
 112         }
 113         else if (r->stream)
 114         {
 115           if ( !hb_stream_read( r->stream, r->ps ) )
 116           {
 117             break;
 118           }
 119         }
 120
 121         hb_demux_ps( r->ps, list );
 122
 123         while( ( buf = hb_list_item( list, 0 ) ) )
 124         {
 125             hb_list_rem( list, buf );
 126             fifo = GetFifoForId( r->job, buf->id );
 127             if( fifo )
 128             {
 129                 while( !*r->die && !r->job->done &&
 130                        hb_fifo_is_full( fifo ) )
 131                 {
 132                     hb_snooze( 50 );
 133                 }
 134                 hb_fifo_push( fifo, buf );
 135             }
 136             else
 137             {
 138                 hb_buffer_close( &buf );
 139             }
 140         }
 141     }
 142
 143     hb_list_empty( &list );
 144     hb_buffer_close( &r->ps );
 145     if (r->dvd)
 146     {
 147       hb_dvd_stop( r->dvd );
 148       hb_dvd_close( &r->dvd );
 149     }
 150     else if (r->stream)
 151     {
 152       hb_stream_close(&r->stream);
 153     }
 154
 155     free( r );
 156     _r = NULL;
 157
 158     hb_log( "reader: done" );
 159 }
 160
 161 /***********************************************************************
 162  * GetFifoForId
 163  ***********************************************************************
 164  *
 165  **********************************************************************/
 166 static hb_fifo_t * GetFifoForId( hb_job_t * job, int id )
 167 {
 168     hb_title_t    * title = job->title;
 169     hb_audio_t    * audio;
 170     hb_subtitle_t * subtitle;
 171     int             i;
 172
 173     if( id == 0xE0 )
 174     {
 175         return job->fifo_mpeg2;
 176     }
 177
 178     if (job->subtitle_scan) {
 179         /*
 180          * Count the occurances of the subtitles, don't actually return any to encode.
 181          */
 182         for (i=0; i < hb_list_count(title->list_subtitle); i++) {
 183             subtitle =  hb_list_item( title->list_subtitle, i);
 184             if (id == subtitle->id) {
 185                 /*
 186                  * A hit, count it.
 187                  */
 188                 subtitle->hits++;
 189             }
 190         }
 191     } else {
 192         if( ( subtitle = hb_list_item( title->list_subtitle, 0 ) ) &&
 193             id == subtitle->id )
 194         {
 195             return subtitle->fifo_in;
 196         }
 197     }
 198     for( i = 0; i < hb_list_count( title->list_audio ); i++ )
 199     {
 200         audio = hb_list_item( title->list_audio, i );
 201         if( id == audio->id )
 202         {
 203             return audio->fifo_in;
 204         }
 205     }
 206
 207     return NULL;
 208 }
 209