mpls.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:11k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * mpls.c: BluRay Disc MPLS
- *****************************************************************************
- * Copyright (C) 2009 the VideoLAN team
- * $Id: 4f597dd336dd0eed1bd49cae6aaf261b9fb08295 $
- *
- * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <limits.h>
- #include <vlc_common.h>
- #include <vlc_bits.h>
- #include "mpls.h"
- /* MPLS */
- void bd_mpls_stream_Parse( bd_mpls_stream_t *p_stream, bs_t *s, int i_class )
- {
- /* Stream entry parsing */
- const int i_entry_length = bs_read( s, 8 );
- const int i_entry_start = bs_pos( s ) / 8;
- p_stream->i_type = bs_read( s, 8 );
- p_stream->i_class = i_class;
- if( p_stream->i_type == BD_MPLS_STREAM_TYPE_PLAY_ITEM )
- {
- p_stream->play_item.i_pid = bs_read( s, 16 );
- }
- else if( p_stream->i_type == BD_MPLS_STREAM_TYPE_SUB_PATH )
- {
- p_stream->sub_path.i_sub_path_id = bs_read( s, 8 );
- p_stream->sub_path.i_sub_clip_id = bs_read( s, 8 );
- p_stream->sub_path.i_pid = bs_read( s, 16 );
- }
- else if( p_stream->i_type == BD_MPLS_STREAM_TYPE_IN_MUX_SUB_PATH )
- {
- p_stream->in_mux_sub_path.i_sub_path_id = bs_read( s, 8 );
- p_stream->in_mux_sub_path.i_pid = bs_read( s, 16 );
- }
- bs_skip( s, 8 * ( i_entry_start + i_entry_length ) - bs_pos( s ) );
- /* Stream attributes parsing */
- const int i_attributes_length = bs_read( s, 8 );
- const int i_attributes_start = bs_pos( s ) / 8;
- p_stream->i_stream_type = bs_read( s, 8 );
- strcpy( p_stream->psz_language, "" );
- p_stream->i_charset = -1;
- if( p_stream->i_stream_type == 0x02 || /* MPEG-I/II */
- p_stream->i_stream_type == 0x1b || /* AVC */
- p_stream->i_stream_type == 0xea ) /* VC-1 */
- {
- /* Video */
- }
- else if( ( p_stream->i_stream_type >= 0x80 && p_stream->i_stream_type <= 0x8f ) ||
- ( p_stream->i_stream_type >= 0xa0 && p_stream->i_stream_type <= 0xaf ) )
- {
- /* Audio */
- bs_skip( s, 4 );
- bs_skip( s, 4 );
- for( int i = 0; i < 3; i++ )
- p_stream->psz_language[i] = bs_read( s, 8 );
- p_stream->psz_language[3] = ' ';
- }
- else if( p_stream->i_stream_type == 0x90 || /* PG stream */
- p_stream->i_stream_type == 0x91 ) /* IG stream */
- {
- for( int i = 0; i < 3; i++ )
- p_stream->psz_language[i] = bs_read( s, 8 );
- p_stream->psz_language[3] = ' ';
- }
- else if( p_stream->i_stream_type == 0x92 ) /* Text stream */
- {
- p_stream->i_charset = bs_read( s, 8 );
- for( int i = 0; i < 3; i++ )
- p_stream->psz_language[i] = bs_read( s, 8 );
- p_stream->psz_language[3] = ' ';
- }
- bs_skip( s, 8 * ( i_attributes_start + i_attributes_length ) - bs_pos( s ) );
- }
- void bd_mpls_play_item_Clean( bd_mpls_play_item_t *p_item )
- {
- free( p_item->p_clpi );
- free( p_item->p_stream );
- }
- void bd_mpls_play_item_Parse( bd_mpls_play_item_t *p_item, bs_t *s )
- {
- const int i_length = bs_read( s, 16 );
- const int i_start = bs_pos( s ) / 8;
- char psz_name[5+1];
- for( int j = 0; j < 5; j++ )
- psz_name[j] = bs_read( s, 8 );
- psz_name[5] = ' ';
- p_item->clpi.i_id = strtol( psz_name, NULL, 10 );
- bs_skip( s, 32 );
- bs_skip( s, 11 );
- const bool b_angle = bs_read( s, 1 );
- p_item->i_connection = bs_read( s, 4 );
- p_item->clpi.i_stc_id = bs_read( s, 8 );
- p_item->i_in_time = bs_read( s, 32 );
- p_item->i_out_time = bs_read( s, 32 );
- bs_skip( s, 64 );
- bs_skip( s, 1 );
- bs_skip( s, 7 );
- p_item->i_still = bs_read( s, 8 );
- p_item->i_still_time = bs_read( s, 16 );
- if( p_item->i_still == BD_MPLS_PLAY_ITEM_STILL_NONE )
- p_item->i_still_time = 0;
- else if( p_item->i_still == BD_MPLS_PLAY_ITEM_STILL_INFINITE )
- p_item->i_still_time = INT_MAX;
- if( b_angle )
- {
- const int i_angle = bs_read( s, 8 );
- bs_skip( s, 6 );
- p_item->b_angle_different_audio = bs_read( s, 1 );
- p_item->b_angle_seamless = bs_read( s, 1 );
- p_item->p_clpi = calloc( i_angle, sizeof(*p_item->p_clpi) );
- for( p_item->i_clpi = 0; p_item->i_clpi < i_angle; p_item->i_clpi++ )
- {
- if( !p_item->p_clpi )
- break;
- bd_mpls_clpi_t *p_clpi = &p_item->p_clpi[p_item->i_clpi];
- char psz_name[5+1];
- for( int j = 0; j < 5; j++ )
- psz_name[j] = bs_read( s, 8 );
- psz_name[5] = ' ';
- p_clpi->i_id = strtol( psz_name, NULL, 10 );
- bs_skip( s, 32 );
- p_clpi->i_stc_id = bs_read( s, 8 );
- }
- }
- else
- {
- p_item->i_clpi = 0;
- p_item->p_clpi = NULL;
- p_item->b_angle_different_audio = false;
- p_item->b_angle_seamless = true;
- }
- /* STN Table */
- bs_skip( s, 16 ); /* Length */
- bs_skip( s, 16 );
- const int i_video = bs_read( s, 8 );
- const int i_audio = bs_read( s, 8 );
- const int i_pg = bs_read( s, 8 );
- const int i_ig = bs_read( s, 8 );
- const int i_audio_2 = bs_read( s, 8 );
- const int i_video_2 = bs_read( s, 8 );
- const int i_pip_pg = bs_read( s, 8 );
- bs_skip( s, 40 );
- p_item->i_stream = 0;
- p_item->p_stream = calloc( i_video + i_audio + i_pg + i_ig,
- sizeof(*p_item->p_stream) );
- for( int j = 0; j < i_video; j++, p_item->i_stream++ )
- {
- if( !p_item->p_stream )
- break;
- bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
- BD_MPLS_STREAM_CLASS_PRIMARY_VIDEO );
- }
- for( int j = 0; j < i_audio; j++, p_item->i_stream++ )
- {
- if( !p_item->p_stream )
- break;
- bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
- BD_MPLS_STREAM_CLASS_PRIMARY_AUDIO );
- }
- for( int j = 0; j < i_pg; j++, p_item->i_stream++ )
- {
- if( !p_item->p_stream )
- break;
- bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
- BD_MPLS_STREAM_CLASS_PG );
- }
- for( int j = 0; j < i_ig; j++, p_item->i_stream++ )
- {
- if( !p_item->p_stream )
- break;
- bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
- BD_MPLS_STREAM_CLASS_IG );
- }
- for( int j = 0; j < i_audio_2; j++ )
- {
- /* TODO I need samples */
- }
- for( int j = 0; j < i_video_2; j++ )
- {
- /* TODO I need samples */
- }
- for( int j = 0; j < i_pip_pg; j++ )
- {
- /* TODO I need samples */
- }
- bs_skip( s, 8 * ( i_start + i_length ) - bs_pos( s ) );
- }
- void bd_mpls_sub_path_Parse( bd_mpls_sub_path_t *p_path, bs_t *s )
- {
- const uint32_t i_length = bs_read( s, 32 );
- const int i_start = bs_pos( s ) / 8;
- bs_skip( s, 8 );
- p_path->i_type = bs_read( s, 8 );
- bs_skip( s, 15 );
- p_path->b_repeat = bs_read( s, 1 );
- bs_skip( s, 8 );
- p_path->i_item = bs_read( s, 8 );
- for( int j = 0; j < p_path->i_item; j++ )
- {
- const int i_length = bs_read( s, 16 );
- const int i_start = bs_pos( s ) / 8;
- /* TODO */
- bs_skip( s, 8 * ( i_start + i_length ) - bs_pos( s ) );
- }
- bs_skip( s, 8 * ( i_start + i_length ) - bs_pos( s ) );
- }
- void bd_mpls_mark_Parse( bd_mpls_mark_t *p_mark, bs_t *s )
- {
- bs_skip( s, 8 );
- p_mark->i_type = bs_read( s, 8 );
- p_mark->i_play_item_id = bs_read( s, 16 );
- p_mark->i_time = bs_read( s, 32 );
- p_mark->i_entry_es_pid = bs_read( s, 16 );
- bs_skip( s, 32 );
- }
- void bd_mpls_Clean( bd_mpls_t *p_mpls )
- {
- for( int i = 0; i < p_mpls->i_play_item; i++ )
- bd_mpls_play_item_Clean( &p_mpls->p_play_item[i] );
- free( p_mpls->p_play_item );
- free( p_mpls->p_sub_path );
- free( p_mpls->p_mark );
- }
- int bd_mpls_Parse( bd_mpls_t *p_mpls, bs_t *s, int i_id )
- {
- const int i_start = bs_pos( s ) / 8;
- /* */
- if( bs_read( s, 32 ) != 0x4d504c53 )
- return VLC_EGENERIC;
- const uint32_t i_version = bs_read( s, 32 );
- if( i_version != 0x30313030 && i_version != 0x30323030 )
- return VLC_EGENERIC;
- const uint32_t i_play_item_start = bs_read( s, 32 );
- const uint32_t i_mark_start = bs_read( s, 32 );
- bs_skip( s, 32 ); /* Extension start */
- /* */
- p_mpls->i_id = i_id;
- /* Read AppInfo: ignored */
- /* Read Playlist */
- bs_t ps = *s;
- bs_skip( &ps, 8 * ( i_start + i_play_item_start ) - bs_pos( s ) );
- bs_skip( &ps, 32 ); /* Length */
- bs_skip( &ps, 16 );
- const int i_play_item = bs_read( &ps, 16 );
- const int i_sub_path = bs_read( &ps, 16 );
- p_mpls->p_play_item = calloc( i_play_item, sizeof(*p_mpls->p_play_item) );
- for( p_mpls->i_play_item = 0; p_mpls->i_play_item < i_play_item; p_mpls->i_play_item++ )
- {
- if( !p_mpls->p_play_item )
- break;
- bd_mpls_play_item_t *p_item = &p_mpls->p_play_item[p_mpls->i_play_item];
- bd_mpls_play_item_Parse( p_item, &ps );
- }
- p_mpls->p_sub_path = calloc( i_sub_path, sizeof(*p_mpls->p_sub_path) );
- for( p_mpls->i_sub_path = 0; p_mpls->i_sub_path < i_sub_path; p_mpls->i_sub_path++ )
- {
- if( !p_mpls->p_sub_path )
- break;
- bd_mpls_sub_path_t *p_sub = &p_mpls->p_sub_path[p_mpls->i_sub_path];
- bd_mpls_sub_path_Parse( p_sub, &ps );
- }
- /* Read Mark */
- bs_t ms = *s;
- bs_skip( &ms, 8 * ( i_start + i_mark_start ) - bs_pos( s ) );
- bs_skip( &ms, 32 );
- const int i_mark = bs_read( &ms, 16 );
- p_mpls->p_mark = calloc( i_mark, sizeof(*p_mpls->p_mark) );
- for( p_mpls->i_mark = 0; p_mpls->i_mark < i_mark; p_mpls->i_mark++ )
- {
- if( !p_mpls->p_mark )
- break;
- bd_mpls_mark_t *p_mark = &p_mpls->p_mark[p_mpls->i_mark];
- bd_mpls_mark_Parse( p_mark, &ms );
- }
- /* Read Extension: ignored */
- return VLC_SUCCESS;
- }