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 1.5 2003/01/29 11:17:44 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, size )                            \
  75     msg_Dbg( p_input, "new es 0x%x", i_id );                            \
  76     p_es = input_AddES( p_input, NULL, id, size );                      \
  77     p_es->i_stream_id = i_id & 0xff;                                    \
  78     p_es->i_fourcc = (fourcc);                                          \
  79     p_es->i_cat = (cat);                                                \
  80     if( lang )                                                          \
  81     {                                                                   \
  82         strcpy( p_es->psz_desc, DecodeLanguage( lang ) );               \
  83     }
  84
  85 /*****************************************************************************
  86  * dvdplay_Video: read video ES
  87  *****************************************************************************/
  88 void dvdplay_Video( input_thread_t * p_input )
  89 {
  90     dvd_data_t *            p_dvd;
  91     es_descriptor_t *       p_es;
  92     video_attr_t *          p_attr;
  93     int                     i_id;
  94
  95     p_dvd = (dvd_data_t*)(p_input->p_access_data);
  96     p_attr = dvdplay_video_attr( p_dvd->vmg );
  97
  98     /* ES 0 -> video MPEG2 */
  99     i_id = 0xe0;
 100
 101     if( p_attr->display_aspect_ratio )
 102     {
 103         ADDES( 0xe0, VLC_FOURCC('m','p','g','v'), VIDEO_ES, 0, sizeof(int) );
 104         *(int*)(p_es->p_demux_data) = p_attr->display_aspect_ratio;
 105     }
 106     else
 107     {
 108         ADDES( 0xe0, VLC_FOURCC('m','p','g','v'), VIDEO_ES, 0, 0 );
 109     }
 110
 111 }
 112
 113 /*****************************************************************************
 114  * dvdplay_Audio: read audio ES
 115  *****************************************************************************/
 116 void dvdplay_Audio( input_thread_t * p_input )
 117 {
 118     dvd_data_t *            p_dvd;
 119     es_descriptor_t *       p_es;
 120     audio_attr_t *          p_attr;
 121     int                     i_audio_nr  = -1;
 122     int                     i_audio     = -1;
 123     int                     i_channels;
 124     int                     i_lang;
 125     int                     i_id;
 126     int                     i;
 127
 128     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 129     p_dvd->i_audio_nb = 0;
 130     dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
 131
 132     /* Audio ES, in the order they appear in .ifo */
 133     for( i = 1 ; i <= i_audio_nr ; i++ )
 134     {
 135         if( ( i_id = dvdplay_audio_id( p_dvd->vmg, i-1 ) ) > 0 )
 136         {
 137             p_attr     = dvdplay_audio_attr( p_dvd->vmg, i-1 );
 138             i_channels = p_attr->channels;
 139             i_lang     = p_attr->lang_code;
 140
 141             ++p_dvd->i_audio_nb;
 142
 143             switch( p_attr->audio_format )
 144             {
 145             case 0x00:              /* A52 */
 146                 ADDES( i_id, VLC_FOURCC('a','5','2','b'), AUDIO_ES, i_lang, 0 );
 147                 strcat( p_es->psz_desc, " (A52)" );
 148
 149                 break;
 150             case 0x02:
 151             case 0x03:              /* MPEG audio */
 152                 ADDES( i_id, VLC_FOURCC('m','p','g','a'), AUDIO_ES, i_lang, 0 );
 153                 strcat( p_es->psz_desc, " (mpeg)" );
 154
 155                 break;
 156             case 0x04:              /* LPCM */
 157                 ADDES( i_id, VLC_FOURCC('l','p','c','b'), AUDIO_ES, i_lang, 0 );
 158                 strcat( p_es->psz_desc, " (lpcm)" );
 159
 160                 break;
 161             case 0x05:              /* SDDS */
 162                 ADDES( i_id, VLC_FOURCC('s','d','d','b'), AUDIO_ES, i_lang, 0 );
 163                 strcat( p_es->psz_desc, " (sdds)" );
 164
 165                 break;
 166             case 0x06:              /* DTS */
 167                 ADDES( i_id, VLC_FOURCC('d','t','s','b'), AUDIO_ES, i_lang, 0 );
 168                 strcat( p_es->psz_desc, " (dts)" );
 169
 170                 break;
 171             default:
 172                 i_id = 0;
 173                 msg_Warn( p_input, "unknown audio type %.2x",
 174                              p_attr->audio_format );
 175             }
 176         }
 177     }
 178 }
 179
 180 /*****************************************************************************
 181  * dvdplay_Subp: read subpictures ES
 182  *****************************************************************************/
 183 void dvdplay_Subp( input_thread_t * p_input )
 184 {
 185     dvd_data_t *            p_dvd;
 186     es_descriptor_t *       p_es;
 187     subp_attr_t *           p_attr;
 188     u32 *                   pi_palette;
 189     int                     i_subp_nr   = -1;
 190     int                     i_subp      = -1;
 191     int                     i_id;
 192     int                     i;
 193
 194     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 195     p_dvd->i_spu_nb = 0;
 196
 197     dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
 198     pi_palette = dvdplay_subp_palette( p_dvd->vmg );
 199
 200     for( i = 1 ; i <= i_subp_nr; i++ )
 201     {
 202         if( ( i_id = dvdplay_subp_id( p_dvd->vmg, i-1 ) ) >= 0 )
 203         {
 204             p_attr = dvdplay_subp_attr( p_dvd->vmg, i-1 );
 205             ++p_dvd->i_spu_nb;
 206
 207             if( pi_palette )
 208             {
 209                 ADDES( i_id, VLC_FOURCC('s','p','u','b'), SPU_ES,
 210                        p_attr->lang_code, sizeof(int) + 16*sizeof(u32) );
 211                 *(int*)p_es->p_demux_data = 0xBeeF;
 212                 memcpy( (void*)p_es->p_demux_data + sizeof(int),
 213                         pi_palette, 16*sizeof(u32) );
 214             }
 215             else
 216             {
 217                 ADDES( i_id, VLC_FOURCC('s','p','u','b'), SPU_ES,
 218                        p_attr->lang_code, 0 );
 219             }
 220         }
 221     }
 222 }
 223
 224 /*****************************************************************************
 225  * dvdplay_LaunchDecoders
 226  *****************************************************************************/
 227 void dvdplay_LaunchDecoders( input_thread_t * p_input )
 228 {
 229     dvd_data_t *            p_dvd;
 230     int                     i_audio_nr  = -1;
 231     int                     i_audio     = -1;
 232     int                     i_subp_nr   = -1;
 233     int                     i_subp      = -1;
 234
 235     p_dvd = (dvd_data_t*)(p_input->p_access_data);
 236
 237     /* For audio: check user settings first, then check dvdplay settings. */
 238     i_audio = config_GetInt( p_input, "audio-channel" );
 239     if( i_audio <= 0 || i_audio > p_dvd->i_audio_nb )
 240     {
 241         /* if i_audio = -1 dvdplay_audio_info() will select a default channel,
 242          * otherwise it warns libdvdplay that we have chosen another stream. */
 243         i_audio = -1;
 244     }
 245     dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
 246
 247     /* For spu: check user settings first, the check dvdplay settings. */
 248     i_subp = config_GetInt( p_input, "spu-channel" );
 249     if( i_subp <= 0 || i_subp > p_dvd->i_spu_nb )
 250     {
 251         i_subp = -1;
 252     }
 253     dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
 254
 255     input_SelectES( p_input, p_input->stream.pp_es[0] );
 256
 257     if( i_audio > p_dvd->i_audio_nb ) i_audio = 1;
 258     if( ( i_audio > 0 ) && ( p_dvd->i_audio_nb > 0 ) )
 259     {
 260         if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
 261         {
 262             int     i_a52 = i_audio;
 263
 264             while( ( i_a52 < p_dvd->i_audio_nb ) &&
 265                    ( p_input->stream.pp_es[i_a52]->i_fourcc !=
 266                         VLC_FOURCC('a','5','2','b') ) )
 267             {
 268                 i_a52++;
 269             }
 270             if( p_input->stream.pp_es[i_a52]->i_fourcc ==
 271                     VLC_FOURCC('a','5','2','b') )
 272             {
 273                 input_SelectES( p_input,
 274                                 p_input->stream.pp_es[i_a52] );
 275
 276                 /* warn libdvdplay that we have chosen another stream */
 277                 dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_a52 );
 278             }
 279             else
 280             {
 281                 /* none found, select the default one */
 282                 input_SelectES( p_input,
 283                                 p_input->stream.pp_es[i_audio] );
 284             }
 285         }
 286         else
 287         {
 288             input_SelectES( p_input,
 289                             p_input->stream.pp_es[i_audio] );
 290         }
 291     }
 292
 293     if( i_subp > p_dvd->i_spu_nb ) i_subp = -1;
 294     if( ( i_subp > 0 ) && ( p_dvd->i_spu_nb > 0 ) )
 295     {
 296         i_subp += p_dvd->i_audio_nb;
 297         input_SelectES( p_input, p_input->stream.pp_es[i_subp] );
 298     }
 299 }
 300
 301 /*****************************************************************************
 302  * dvdplay_ES:
 303  *****************************************************************************/
 304 void dvdplay_ES( input_thread_t * p_input )
 305 {
 306     dvdplay_DeleteES      ( p_input );
 307     dvdplay_Video         ( p_input );
 308     dvdplay_Audio         ( p_input );
 309     dvdplay_Subp          ( p_input );
 310     dvdplay_LaunchDecoders( p_input );
 311 }
 312
 313