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     uint           sequence;
  20
  21 } hb_reader_t;
  22
  23 /***********************************************************************
  24  * Local prototypes
  25  **********************************************************************/
  26 static void        ReaderFunc( void * );
  27 static hb_fifo_t * GetFifoForId( hb_job_t * job, int id );
  28
  29 /***********************************************************************
  30  * hb_reader_init
  31  ***********************************************************************
  32  *
  33  **********************************************************************/
  34 hb_thread_t * hb_reader_init( hb_job_t * job )
  35 {
  36     hb_reader_t * r;
  37
  38     r = calloc( sizeof( hb_reader_t ), 1 );
  39
  40     r->job   = job;
  41     r->title = job->title;
  42     r->die   = job->die;
  43     r->sequence = 0;
  44
  45     return hb_thread_init( "reader", ReaderFunc, r,
  46                            HB_NORMAL_PRIORITY );
  47 }
  48
  49 /***********************************************************************
  50  * ReaderFunc
  51  ***********************************************************************
  52  *
  53  **********************************************************************/
  54 static void ReaderFunc( void * _r )
  55 {
  56     hb_reader_t  * r = _r;
  57     hb_fifo_t    * fifo;
  58     hb_buffer_t  * buf;
  59     hb_list_t    * list;
  60     int            chapter = -1;
  61     int            chapter_end = r->job->chapter_end;
  62
  63     if( !( r->dvd = hb_dvd_init( r->title->dvd ) ) )
  64     {
  65         if ( !(r->stream = hb_stream_open(r->title->dvd) ) )
  66         {
  67           return;
  68         }
  69     }
  70
  71     if (r->dvd)
  72     {
  73       /*
  74        * XXX this code is a temporary hack that should go away if/when
  75        *     chapter merging goes away in libhb/dvd.c
  76        * map the start and end chapter numbers to on-media chapter
  77        * numbers since chapter merging could cause the handbrake numbers
  78        * to diverge from the media numbers and, if our chapter_end is after
  79        * a media chapter that got merged, we'll stop ripping too early.
  80        */
  81       int start = r->job->chapter_start;
  82       hb_chapter_t * chap = hb_list_item( r->title->list_chapter, chapter_end - 1 );
  83
  84       chapter_end = chap->index;
  85       if (start > 1)
  86       {
  87          chap = hb_list_item( r->title->list_chapter, start - 1 );
  88          start = chap->index;
  89       }
  90       /* end chapter mapping XXX */
  91
  92       if( !hb_dvd_start( r->dvd, r->title->index, start ) )
  93       {
  94           hb_dvd_close( &r->dvd );
  95           return;
  96       }
  97     }
  98
  99     list  = hb_list_init();
 100     r->ps = hb_buffer_init( HB_DVD_READ_BUFFER_SIZE );
 101
 102     while( !*r->die && !r->job->done )
 103     {
 104         if (r->dvd)
 105           chapter = hb_dvd_chapter( r->dvd );
 106         else if (r->stream)
 107           chapter = 1;
 108
 109         if( chapter < 0 )
 110         {
 111             hb_log( "reader: end of the title reached" );
 112             break;
 113         }
 114         if( chapter > chapter_end )
 115         {
 116             hb_log( "reader: end of chapter %d (media %d) reached at media chapter %d",
 117                     r->job->chapter_end, chapter_end, chapter );
 118             break;
 119         }
 120
 121         if (r->dvd)
 122         {
 123           if( !hb_dvd_read( r->dvd, r->ps ) )
 124           {
 125               break;
 126           }
 127         }
 128         else if (r->stream)
 129         {
 130           if ( !hb_stream_read( r->stream, r->ps ) )
 131           {
 132             break;
 133           }
 134         }
 135
 136         if( r->job->indepth_scan )
 137         {
 138             /*
 139              * Need to update the progress during a subtitle scan
 140              */
 141             hb_state_t state;
 142
 143 #define p state.param.working
 144
 145             state.state = HB_STATE_WORKING;
 146             p.progress = (float)chapter / (float)r->job->chapter_end;
 147             if( p.progress > 1.0 )
 148             {
 149                 p.progress = 1.0;
 150             }
 151             p.rate_avg = 0.0;
 152             p.hours    = -1;
 153             p.minutes  = -1;
 154             p.seconds  = -1;
 155             hb_set_state( r->job->h, &state );
 156         }
 157
 158         hb_demux_ps( r->ps, list );
 159
 160         while( ( buf = hb_list_item( list, 0 ) ) )
 161         {
 162             hb_list_rem( list, buf );
 163             fifo = GetFifoForId( r->job, buf->id );
 164             if( fifo )
 165             {
 166                 while( !*r->die && !r->job->done &&
 167                        hb_fifo_is_full( fifo ) )
 168                 {
 169                     hb_snooze( 50 );
 170                 }
 171                 buf->sequence = r->sequence++;
 172                 hb_fifo_push( fifo, buf );
 173             }
 174             else
 175             {
 176                 hb_buffer_close( &buf );
 177             }
 178         }
 179     }
 180
 181     hb_list_empty( &list );
 182     hb_buffer_close( &r->ps );
 183     if (r->dvd)
 184     {
 185       hb_dvd_stop( r->dvd );
 186       hb_dvd_close( &r->dvd );
 187     }
 188     else if (r->stream)
 189     {
 190       hb_stream_close(&r->stream);
 191     }
 192
 193     free( r );
 194     _r = NULL;
 195
 196     hb_log( "reader: done" );
 197 }
 198
 199 /***********************************************************************
 200  * GetFifoForId
 201  ***********************************************************************
 202  *
 203  **********************************************************************/
 204 static hb_fifo_t * GetFifoForId( hb_job_t * job, int id )
 205 {
 206     hb_title_t    * title = job->title;
 207     hb_audio_t    * audio;
 208     hb_subtitle_t * subtitle;
 209     int             i;
 210
 211     if( id == 0xE0 )
 212     {
 213         if( job->indepth_scan )
 214         {
 215             /*
 216              * Ditch the video here during the indepth scan until
 217              * we can improve the MPEG2 decode performance.
 218              */
 219             return NULL;
 220         }
 221         else
 222         {
 223             return job->fifo_mpeg2;
 224         }
 225     }
 226
 227     if( job->indepth_scan ) {
 228         /*
 229          * Count the occurances of the subtitles, don't actually
 230          * return any to encode unless we are looking fro forced
 231          * subtitles in which case we need to look in the sub picture
 232          * to see if it has the forced flag enabled.
 233          */
 234         for (i=0; i < hb_list_count(title->list_subtitle); i++) {
 235             subtitle =  hb_list_item( title->list_subtitle, i);
 236             if (id == subtitle->id) {
 237                 /*
 238                  * A hit, count it.
 239                  */
 240                 subtitle->hits++;
 241                 if( job->subtitle_force )
 242                 {
 243                     return subtitle->fifo_in;
 244                 }
 245                 break;
 246             }
 247         }
 248     } else {
 249         if( ( subtitle = hb_list_item( title->list_subtitle, 0 ) ) &&
 250             id == subtitle->id )
 251         {
 252             return subtitle->fifo_in;
 253         }
 254     }
 255     if( !job->indepth_scan )
 256     {
 257         for( i = 0; i < hb_list_count( title->list_audio ); i++ )
 258         {
 259             audio = hb_list_item( title->list_audio, i );
 260             if( id == audio->id )
 261             {
 262                 return audio->fifo_in;
 263             }
 264         }
 265     }
 266
 267     return NULL;
 268 }
 269