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318 lines
11 KiB
318 lines
11 KiB
/*****************************************************************************
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* es.c: functions to handle elementary streams.
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*****************************************************************************
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* Copyright (C) 2001 VideoLAN
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* $Id: es.c,v 1.6 2003/05/05 22:23:32 gbazin Exp $
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*
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* Author: Stéphane Borel <stef@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <vlc/vlc.h>
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#include <vlc/input.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <errno.h>
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#ifdef STRNCASECMP_IN_STRINGS_H
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# include <strings.h>
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#endif
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#include "dvd.h"
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#include "iso_lang.h"
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void dvdplay_LaunchDecoders( input_thread_t * p_input );
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/*****************************************************************************
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* dvdplay_DeleteES:
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*****************************************************************************/
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void dvdplay_DeleteES( input_thread_t* p_input )
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{
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free( p_input->stream.pp_selected_es );
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p_input->stream.pp_selected_es = NULL;
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p_input->stream.i_selected_es_number = 0;
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while( p_input->stream.i_es_number )
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{
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input_DelES( p_input, p_input->stream.pp_es[0] );
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}
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free( p_input->stream.pp_es );
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p_input->stream.pp_es = NULL;
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p_input->stream.i_es_number = 0;
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}
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#define ADDES( id, fourcc, cat, lang, descr, size ) \
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msg_Dbg( p_input, "new es 0x%x", i_id ); \
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{ \
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char *psz_descr; \
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psz_descr = malloc( strlen(DecodeLanguage( lang )) + \
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strlen(descr) + 1 ); \
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if( psz_descr ) {strcpy( psz_descr, DecodeLanguage( lang ) ); \
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strcat( psz_descr, descr );} \
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p_es = input_AddES( p_input, NULL, id, cat, \
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psz_descr, size ); \
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if( psz_descr ) free( psz_descr ); \
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} \
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p_es->i_stream_id = i_id & 0xff; \
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p_es->i_fourcc = (fourcc);
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/*****************************************************************************
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* dvdplay_Video: read video ES
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*****************************************************************************/
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void dvdplay_Video( input_thread_t * p_input )
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{
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dvd_data_t * p_dvd;
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es_descriptor_t * p_es;
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video_attr_t * p_attr;
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int i_id;
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p_dvd = (dvd_data_t*)(p_input->p_access_data);
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p_attr = dvdplay_video_attr( p_dvd->vmg );
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/* ES 0 -> video MPEG2 */
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i_id = 0xe0;
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if( p_attr->display_aspect_ratio )
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{
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ADDES( 0xe0, VLC_FOURCC('m','p','g','v'), VIDEO_ES, 0,
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"", sizeof(int) );
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*(int*)(p_es->p_demux_data) = p_attr->display_aspect_ratio;
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}
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else
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{
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ADDES( 0xe0, VLC_FOURCC('m','p','g','v'), VIDEO_ES, 0, "", 0 );
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}
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}
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/*****************************************************************************
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* dvdplay_Audio: read audio ES
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*****************************************************************************/
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void dvdplay_Audio( input_thread_t * p_input )
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{
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dvd_data_t * p_dvd;
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es_descriptor_t * p_es;
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audio_attr_t * p_attr;
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int i_audio_nr = -1;
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int i_audio = -1;
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int i_channels;
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int i_lang;
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int i_id;
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int i;
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p_dvd = (dvd_data_t*)(p_input->p_access_data);
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p_dvd->i_audio_nb = 0;
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dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
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/* Audio ES, in the order they appear in .ifo */
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for( i = 1 ; i <= i_audio_nr ; i++ )
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{
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if( ( i_id = dvdplay_audio_id( p_dvd->vmg, i-1 ) ) > 0 )
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{
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p_attr = dvdplay_audio_attr( p_dvd->vmg, i-1 );
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i_channels = p_attr->channels;
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i_lang = p_attr->lang_code;
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++p_dvd->i_audio_nb;
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switch( p_attr->audio_format )
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{
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case 0x00: /* A52 */
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ADDES( i_id, VLC_FOURCC('a','5','2','b'), AUDIO_ES, i_lang,
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" (A52)", 0 );
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break;
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case 0x02:
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case 0x03: /* MPEG audio */
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ADDES( i_id, VLC_FOURCC('m','p','g','a'), AUDIO_ES, i_lang,
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" (mpeg)", 0 );
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break;
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case 0x04: /* LPCM */
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ADDES( i_id, VLC_FOURCC('l','p','c','b'), AUDIO_ES, i_lang,
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" (lpcm)", 0 );
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break;
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case 0x05: /* SDDS */
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ADDES( i_id, VLC_FOURCC('s','d','d','b'), AUDIO_ES, i_lang,
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" (sdds)", 0 );
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break;
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case 0x06: /* DTS */
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ADDES( i_id, VLC_FOURCC('d','t','s','b'), AUDIO_ES, i_lang,
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" (dts)", 0 );
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break;
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default:
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i_id = 0;
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msg_Warn( p_input, "unknown audio type %.2x",
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p_attr->audio_format );
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}
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}
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}
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}
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/*****************************************************************************
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* dvdplay_Subp: read subpictures ES
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*****************************************************************************/
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void dvdplay_Subp( input_thread_t * p_input )
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{
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dvd_data_t * p_dvd;
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es_descriptor_t * p_es;
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subp_attr_t * p_attr;
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u32 * pi_palette;
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int i_subp_nr = -1;
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int i_subp = -1;
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int i_id;
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int i;
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p_dvd = (dvd_data_t*)(p_input->p_access_data);
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p_dvd->i_spu_nb = 0;
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dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
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pi_palette = dvdplay_subp_palette( p_dvd->vmg );
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for( i = 1 ; i <= i_subp_nr; i++ )
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{
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if( ( i_id = dvdplay_subp_id( p_dvd->vmg, i-1 ) ) >= 0 )
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{
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p_attr = dvdplay_subp_attr( p_dvd->vmg, i-1 );
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++p_dvd->i_spu_nb;
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if( pi_palette )
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{
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ADDES( i_id, VLC_FOURCC('s','p','u','b'), SPU_ES,
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p_attr->lang_code, "", sizeof(int) + 16*sizeof(u32) );
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*(int*)p_es->p_demux_data = 0xBeeF;
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memcpy( (void*)p_es->p_demux_data + sizeof(int),
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pi_palette, 16*sizeof(u32) );
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}
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else
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{
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ADDES( i_id, VLC_FOURCC('s','p','u','b'), SPU_ES,
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p_attr->lang_code, "", 0 );
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}
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}
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}
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}
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/*****************************************************************************
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* dvdplay_LaunchDecoders
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*****************************************************************************/
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void dvdplay_LaunchDecoders( input_thread_t * p_input )
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{
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dvd_data_t * p_dvd;
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int i_audio_nr = -1;
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int i_audio = -1;
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int i_subp_nr = -1;
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int i_subp = -1;
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p_dvd = (dvd_data_t*)(p_input->p_access_data);
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/* For audio: check user settings first, then check dvdplay settings. */
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i_audio = config_GetInt( p_input, "audio-channel" );
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if( i_audio <= 0 || i_audio > p_dvd->i_audio_nb )
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{
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/* if i_audio = -1 dvdplay_audio_info() will select a default channel,
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* otherwise it warns libdvdplay that we have chosen another stream. */
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i_audio = -1;
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}
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dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
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/* For spu: check user settings first, the check dvdplay settings. */
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i_subp = config_GetInt( p_input, "spu-channel" );
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if( i_subp <= 0 || i_subp > p_dvd->i_spu_nb )
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{
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i_subp = -1;
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}
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dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
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input_SelectES( p_input, p_input->stream.pp_es[0] );
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if( i_audio > p_dvd->i_audio_nb ) i_audio = 1;
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if( ( i_audio > 0 ) && ( p_dvd->i_audio_nb > 0 ) )
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{
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if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
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{
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int i_a52 = i_audio;
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while( ( i_a52 < p_dvd->i_audio_nb ) &&
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( p_input->stream.pp_es[i_a52]->i_fourcc !=
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VLC_FOURCC('a','5','2','b') ) )
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{
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i_a52++;
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}
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if( p_input->stream.pp_es[i_a52]->i_fourcc ==
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VLC_FOURCC('a','5','2','b') )
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{
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input_SelectES( p_input,
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p_input->stream.pp_es[i_a52] );
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/* warn libdvdplay that we have chosen another stream */
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dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_a52 );
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}
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else
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{
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/* none found, select the default one */
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input_SelectES( p_input,
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p_input->stream.pp_es[i_audio] );
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}
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}
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else
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{
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input_SelectES( p_input,
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p_input->stream.pp_es[i_audio] );
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}
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}
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if( i_subp > p_dvd->i_spu_nb ) i_subp = -1;
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if( ( i_subp > 0 ) && ( p_dvd->i_spu_nb > 0 ) )
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{
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i_subp += p_dvd->i_audio_nb;
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input_SelectES( p_input, p_input->stream.pp_es[i_subp] );
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}
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}
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/*****************************************************************************
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* dvdplay_ES:
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*****************************************************************************/
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void dvdplay_ES( input_thread_t * p_input )
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{
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dvdplay_DeleteES ( p_input );
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dvdplay_Video ( p_input );
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dvdplay_Audio ( p_input );
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dvdplay_Subp ( p_input );
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dvdplay_LaunchDecoders( p_input );
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}
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