git.sesse.net Git - vlc/blob - modules/access/dvdplay/es.c

   1 /*****************************************************************************
   2  * es.c: functions to handle elementary streams.
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: es.c,v 1.6 2003/05/05 22:23:32 gbazin Exp $
   6  *
   7  * Author: Stéphane Borel <stef@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/input.h>
  32
  33 #ifdef HAVE_UNISTD_H
  34 #   include <unistd.h>
  35 #endif
  36
  37 #include <fcntl.h>
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <string.h>
  41 #include <errno.h>
  42
  43 #ifdef STRNCASECMP_IN_STRINGS_H
  44 #   include <strings.h>
  45 #endif
  46
  47 #include "dvd.h"
  48 #include "iso_lang.h"
  49
  50 void dvdplay_LaunchDecoders( input_thread_t * p_input );
  51
  52 /*****************************************************************************
  53  * dvdplay_DeleteES:
  54  *****************************************************************************/
  55 void dvdplay_DeleteES( input_thread_t* p_input )
  56 {
  57     free( p_input->stream.pp_selected_es );
  58
  59     p_input->stream.pp_selected_es = NULL;
  60     p_input->stream.i_selected_es_number = 0;
  61
  62     while( p_input->stream.i_es_number )
  63     {
  64         input_DelES( p_input, p_input->stream.pp_es[0] );
  65     }
  66
  67     free( p_input->stream.pp_es );
  68
  69     p_input->stream.pp_es = NULL;
  70     p_input->stream.i_es_number = 0;
  71
  72 }
  73
  74 #define ADDES( id, fourcc, cat, lang, descr, size )                     \
  75     msg_Dbg( p_input, "new es 0x%x", i_id );                            \
  76     {                                                                   \
  77         char *psz_descr;                                                \
  78         psz_descr = malloc( strlen(DecodeLanguage( lang )) +            \
  79                             strlen(descr) + 1 );                        \
  80         if( psz_descr ) {strcpy( psz_descr, DecodeLanguage( lang ) );   \
  81             strcat( psz_descr, descr );}                                \
  82         p_es = input_AddES( p_input, NULL, id, cat,                     \
  83                             psz_descr, size );                          \
  84         if( psz_descr ) free( psz_descr );                              \
  85     }                                                                   \
  86     p_es->i_stream_id = i_id & 0xff;                                    \
  87     p_es->i_fourcc = (fourcc);
  88
  89 /*****************************************************************************
  90  * dvdplay_Video: read video ES
  91  *****************************************************************************/
  92 void dvdplay_Video( input_thread_t * p_input )
  93 {
  94     dvd_data_t *            p_dvd;
  95     es_descriptor_t *       p_es;
  96     video_attr_t *          p_attr;
  97     int                     i_id;
  98
  99     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 100     p_attr = dvdplay_video_attr( p_dvd->vmg );
 101
 102     /* ES 0 -> video MPEG2 */
 103     i_id = 0xe0;
 104
 105     if( p_attr->display_aspect_ratio )
 106     {
 107         ADDES( 0xe0, VLC_FOURCC('m','p','g','v'), VIDEO_ES, 0,
 108                "", sizeof(int) );
 109         *(int*)(p_es->p_demux_data) = p_attr->display_aspect_ratio;
 110     }
 111     else
 112     {
 113         ADDES( 0xe0, VLC_FOURCC('m','p','g','v'), VIDEO_ES, 0, "", 0 );
 114     }
 115
 116 }
 117
 118 /*****************************************************************************
 119  * dvdplay_Audio: read audio ES
 120  *****************************************************************************/
 121 void dvdplay_Audio( input_thread_t * p_input )
 122 {
 123     dvd_data_t *            p_dvd;
 124     es_descriptor_t *       p_es;
 125     audio_attr_t *          p_attr;
 126     int                     i_audio_nr  = -1;
 127     int                     i_audio     = -1;
 128     int                     i_channels;
 129     int                     i_lang;
 130     int                     i_id;
 131     int                     i;
 132
 133     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 134     p_dvd->i_audio_nb = 0;
 135     dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
 136
 137     /* Audio ES, in the order they appear in .ifo */
 138     for( i = 1 ; i <= i_audio_nr ; i++ )
 139     {
 140         if( ( i_id = dvdplay_audio_id( p_dvd->vmg, i-1 ) ) > 0 )
 141         {
 142             p_attr     = dvdplay_audio_attr( p_dvd->vmg, i-1 );
 143             i_channels = p_attr->channels;
 144             i_lang     = p_attr->lang_code;
 145
 146             ++p_dvd->i_audio_nb;
 147
 148             switch( p_attr->audio_format )
 149             {
 150             case 0x00:              /* A52 */
 151                 ADDES( i_id, VLC_FOURCC('a','5','2','b'), AUDIO_ES, i_lang,
 152                        " (A52)", 0 );
 153
 154                 break;
 155             case 0x02:
 156             case 0x03:              /* MPEG audio */
 157                 ADDES( i_id, VLC_FOURCC('m','p','g','a'), AUDIO_ES, i_lang,
 158                        " (mpeg)", 0 );
 159
 160                 break;
 161             case 0x04:              /* LPCM */
 162                 ADDES( i_id, VLC_FOURCC('l','p','c','b'), AUDIO_ES, i_lang,
 163                        " (lpcm)", 0 );
 164
 165                 break;
 166             case 0x05:              /* SDDS */
 167                 ADDES( i_id, VLC_FOURCC('s','d','d','b'), AUDIO_ES, i_lang,
 168                        " (sdds)", 0 );
 169
 170                 break;
 171             case 0x06:              /* DTS */
 172                 ADDES( i_id, VLC_FOURCC('d','t','s','b'), AUDIO_ES, i_lang,
 173                        " (dts)", 0 );
 174
 175                 break;
 176             default:
 177                 i_id = 0;
 178                 msg_Warn( p_input, "unknown audio type %.2x",
 179                              p_attr->audio_format );
 180             }
 181         }
 182     }
 183 }
 184
 185 /*****************************************************************************
 186  * dvdplay_Subp: read subpictures ES
 187  *****************************************************************************/
 188 void dvdplay_Subp( input_thread_t * p_input )
 189 {
 190     dvd_data_t *            p_dvd;
 191     es_descriptor_t *       p_es;
 192     subp_attr_t *           p_attr;
 193     u32 *                   pi_palette;
 194     int                     i_subp_nr   = -1;
 195     int                     i_subp      = -1;
 196     int                     i_id;
 197     int                     i;
 198
 199     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 200     p_dvd->i_spu_nb = 0;
 201
 202     dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
 203     pi_palette = dvdplay_subp_palette( p_dvd->vmg );
 204
 205     for( i = 1 ; i <= i_subp_nr; i++ )
 206     {
 207         if( ( i_id = dvdplay_subp_id( p_dvd->vmg, i-1 ) ) >= 0 )
 208         {
 209             p_attr = dvdplay_subp_attr( p_dvd->vmg, i-1 );
 210             ++p_dvd->i_spu_nb;
 211
 212             if( pi_palette )
 213             {
 214                 ADDES( i_id, VLC_FOURCC('s','p','u','b'), SPU_ES,
 215                        p_attr->lang_code, "", sizeof(int) + 16*sizeof(u32) );
 216                 *(int*)p_es->p_demux_data = 0xBeeF;
 217                 memcpy( (void*)p_es->p_demux_data + sizeof(int),
 218                         pi_palette, 16*sizeof(u32) );
 219             }
 220             else
 221             {
 222                 ADDES( i_id, VLC_FOURCC('s','p','u','b'), SPU_ES,
 223                        p_attr->lang_code, "", 0 );
 224             }
 225         }
 226     }
 227 }
 228
 229 /*****************************************************************************
 230  * dvdplay_LaunchDecoders
 231  *****************************************************************************/
 232 void dvdplay_LaunchDecoders( input_thread_t * p_input )
 233 {
 234     dvd_data_t *            p_dvd;
 235     int                     i_audio_nr  = -1;
 236     int                     i_audio     = -1;
 237     int                     i_subp_nr   = -1;
 238     int                     i_subp      = -1;
 239
 240     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 241
 242     /* For audio: check user settings first, then check dvdplay settings. */
 243     i_audio = config_GetInt( p_input, "audio-channel" );
 244     if( i_audio <= 0 || i_audio > p_dvd->i_audio_nb )
 245     {
 246         /* if i_audio = -1 dvdplay_audio_info() will select a default channel,
 247          * otherwise it warns libdvdplay that we have chosen another stream. */
 248         i_audio = -1;
 249     }
 250     dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
 251
 252     /* For spu: check user settings first, the check dvdplay settings. */
 253     i_subp = config_GetInt( p_input, "spu-channel" );
 254     if( i_subp <= 0 || i_subp > p_dvd->i_spu_nb )
 255     {
 256         i_subp = -1;
 257     }
 258     dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
 259
 260     input_SelectES( p_input, p_input->stream.pp_es[0] );
 261
 262     if( i_audio > p_dvd->i_audio_nb ) i_audio = 1;
 263     if( ( i_audio > 0 ) && ( p_dvd->i_audio_nb > 0 ) )
 264     {
 265         if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
 266         {
 267             int     i_a52 = i_audio;
 268
 269             while( ( i_a52 < p_dvd->i_audio_nb ) &&
 270                    ( p_input->stream.pp_es[i_a52]->i_fourcc !=
 271                         VLC_FOURCC('a','5','2','b') ) )
 272             {
 273                 i_a52++;
 274             }
 275             if( p_input->stream.pp_es[i_a52]->i_fourcc ==
 276                     VLC_FOURCC('a','5','2','b') )
 277             {
 278                 input_SelectES( p_input,
 279                                 p_input->stream.pp_es[i_a52] );
 280
 281                 /* warn libdvdplay that we have chosen another stream */
 282                 dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_a52 );
 283             }
 284             else
 285             {
 286                 /* none found, select the default one */
 287                 input_SelectES( p_input,
 288                                 p_input->stream.pp_es[i_audio] );
 289             }
 290         }
 291         else
 292         {
 293             input_SelectES( p_input,
 294                             p_input->stream.pp_es[i_audio] );
 295         }
 296     }
 297
 298     if( i_subp > p_dvd->i_spu_nb ) i_subp = -1;
 299     if( ( i_subp > 0 ) && ( p_dvd->i_spu_nb > 0 ) )
 300     {
 301         i_subp += p_dvd->i_audio_nb;
 302         input_SelectES( p_input, p_input->stream.pp_es[i_subp] );
 303     }
 304 }
 305
 306 /*****************************************************************************
 307  * dvdplay_ES:
 308  *****************************************************************************/
 309 void dvdplay_ES( input_thread_t * p_input )
 310 {
 311     dvdplay_DeleteES      ( p_input );
 312     dvdplay_Video         ( p_input );
 313     dvdplay_Audio         ( p_input );
 314     dvdplay_Subp          ( p_input );
 315     dvdplay_LaunchDecoders( p_input );
 316 }
 317
 318