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vlc/modules/access/dvdread.c

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/*****************************************************************************
* dvdread.c : DvdRead input module for vlc
*****************************************************************************
* Copyright (C) 2001-2025 VLC authors and VideoLAN
*
* Authors: Stéphane Borel <stef@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
* Saifelden Mohamed Ismail <saifeldenmi@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
/*****************************************************************************
* NOTA BENE: this module requires the linking against a library which is
* known to require licensing under the GNU General Public License version 2
* (or later). Therefore, the result of compiling this module will normally
* be subject to the terms of that later license.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_arrays.h>
#include <vlc_plugin.h>
#include <vlc_input.h>
#include <vlc_access.h>
#include <vlc_charset.h>
#include <vlc_interface.h>
#include <vlc_dialog.h>
#include <vlc_iso_lang.h>
#include "../demux/mpeg/pes.h"
#include "../demux/mpeg/ps.h"
#include <sys/types.h>
#include <unistd.h>
#include <dvdread/dvd_reader.h>
#include <dvdread/ifo_types.h>
#include <dvdread/ifo_read.h>
#include <dvdread/nav_read.h>
#include <dvdread/nav_print.h>
#include <assert.h>
#include <limits.h>
#include "disc_helper.h"
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define ANGLE_TEXT N_("DVD angle")
#define ANGLE_LONGTEXT N_( \
"Default DVD angle." )
#if DVDREAD_VERSION >= DVDREAD_VERSION_CODE(7, 0, 0)
#define DVDREAD_HAS_DVDAUDIO 1
#endif
#ifdef DVDREAD_HAS_DVDAUDIO
#define SET_AREA( p_demux, title, chapter, angle ) \
(((p_sys->type) == DVD_A ? DvdAudioReadSetArea : DvdReadSetArea)( p_demux, title, chapter, -1 ))
#else
#define SET_AREA( p_demux, title, chapter, angle ) \
(DvdReadSetArea( p_demux, title, chapter, -1 ))
#endif
/*local prototype*/
typedef enum
{
DVD_V = 0,
DVD_A= 1,
} dvd_type_t;
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
/* Sets DVD-audio behavior for Open function*/
static int OpenAudio ( vlc_object_t * );
static int OpenCommon( vlc_object_t * , dvd_type_t );
vlc_module_begin ()
set_shortname( N_("DVD without menus") )
set_description( N_("DVDRead Input (no menu support)") )
set_subcategory( SUBCAT_INPUT_ACCESS )
add_integer( "dvdread-angle", 1, ANGLE_TEXT,
ANGLE_LONGTEXT )
set_capability( "access", 0 )
add_shortcut( "dvd", "dvdread", "dvdsimple" )
set_callbacks( Open, Close )
add_submodule()
set_capability( "access", 1 )
add_shortcut( "dvda", "dvd" )
set_callbacks( OpenAudio, Close )
vlc_module_end ()
/* how many blocks DVDRead will read in each loop */
#define DVD_BLOCK_READ_ONCE 4
/*****************************************************************************
* Local prototypes
*****************************************************************************/
typedef struct
{
/* DVDRead state */
dvd_reader_t *p_dvdread;
dvd_file_t *p_title;
ifo_handle_t *p_vmg_file;
ifo_handle_t *p_vts_file;
unsigned updates;
int i_title;
int cur_title;
int i_chapter, i_chapters;
int cur_chapter;
int i_angle, i_angles;
dvd_type_t type;
union
{
/* Video tables */
struct
{
tt_srpt_t *p_tt_srpt;
pgc_t *p_cur_pgc;
};
#ifdef DVDREAD_HAS_DVDAUDIO
/* Audio tables */
struct
{
atsi_title_record_t *p_title_table;
};
#endif
};
dsi_t dsi_pack;
int i_ttn;
int i_pack_len;
int i_cur_block;
int i_next_vobu;
int i_mux_rate;
/* Current title start/end blocks */
int i_title_start_block;
int i_title_end_block;
uint32_t i_title_blocks;
int i_title_offset;
int i_title_start_cell;
int i_title_end_cell;
int i_cur_cell;
int i_next_cell;
/* Track */
ps_track_t tk[PS_TK_COUNT];
int i_titles;
input_title_t **titles;
/* Video */
int i_sar_num;
int i_sar_den;
/* SPU */
uint32_t clut[VIDEO_PALETTE_CLUT_COUNT];
} demux_sys_t;
static int Control ( demux_t *, int, va_list );
static int Demux ( demux_t * );
static int DemuxBlock( demux_t *, const uint8_t *, int );
static void DemuxTitles( demux_t *, int * );
static void ESNew( demux_t *, int, int );
static int DvdReadSetArea ( demux_t *, int, int, int );
static int DvdReadSeek ( demux_t *, uint32_t );
#ifdef DVDREAD_HAS_DVDAUDIO
static int DvdAudioReadSetArea ( demux_t *, int, int, int );
static int DvdAudioReadSeek( demux_t *, uint32_t );
#endif
static void DvdReadHandleDSI( demux_t *, uint8_t * );
static void DvdReadFindCell ( demux_t * );
#if DVDREAD_VERSION >= DVDREAD_VERSION_CODE(6, 1, 0)
static void DvdReadLog( void *foo, dvd_logger_level_t i, const char *p, va_list z )
{
demux_t *p_demux = (demux_t*)foo;
msg_GenericVa( p_demux, i, p, z );
}
#endif
/*****************************************************************************
* Open:
*****************************************************************************/
static int OpenCommon( vlc_object_t *p_this , dvd_type_t type )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
char *psz_file;
ifo_handle_t *p_vmg_file;
if (p_demux->out == NULL)
return VLC_EGENERIC;
if( !p_demux->psz_filepath || !*p_demux->psz_filepath )
psz_file = var_InheritString( p_this, "dvd" );
else
psz_file = strdup( p_demux->psz_filepath );
#if defined( _WIN32 ) || defined( __OS2__ )
if( psz_file != NULL )
{
size_t flen = strlen( psz_file );
if( flen > 0 && psz_file[flen - 1] == '\\' )
psz_file[flen - 1] = '\0';
}
else
psz_file = strdup("");
#endif
if( unlikely(psz_file == NULL) )
return VLC_EGENERIC;
#ifdef __APPLE__
if( DiscProbeMacOSPermission( p_this, psz_file ) != VLC_SUCCESS )
{
free( psz_file );
return VLC_EGENERIC;
}
#endif
/* Open dvdread */
#if DVDREAD_VERSION < DVDREAD_VERSION_CODE(6, 1, 2)
/* In libdvdread prior to 6.1.2, UTF8 is not supported for windows and
* requires a prior conversion.
* For non win32/os2 platforms, this is just a no-op */
const char *psz_path = ToLocale( psz_file );
#else
const char *psz_path = psz_file;
#endif
#ifdef DVDREAD_HAS_DVDAUDIO
dvd_logger_cb cbs = { .pf_log = DvdReadLog };
dvd_reader_t *p_dvdread;
switch (type) {
case DVD_A:
p_dvdread = DVDOpenAudio( p_demux, &cbs, psz_path );
break;
default:
p_dvdread = DVDOpen2( p_demux, &cbs, psz_path );
break;
}
#elif DVDREAD_VERSION >= DVDREAD_VERSION_CODE(6, 1, 0)
dvd_logger_cb cbs = { .pf_log = DvdReadLog };
dvd_reader_t *p_dvdread;
switch (type) {
case DVD_A:
msg_Err( p_demux, "Version of libdvdread does not support DVD-audio" );
free( psz_file );
return VLC_EGENERIC;
default:
p_dvdread = DVDOpen2( p_demux, &cbs, psz_path );
break;
}
#else
switch (type) {
case DVD_A:
msg_Err( p_demux, "Version of libdvdread does not support DVD-audio" );
free( psz_file );
return VLC_EGENERIC;
default:
dvd_reader_t *p_dvdread = DVDOpen( psz_path );
break;
}
#endif
#if DVDREAD_VERSION < DVDREAD_VERSION_CODE(6, 1, 2)
LocaleFree( psz_path );
#endif
if( p_dvdread == NULL )
{
msg_Err( p_demux, "DVDRead cannot open source: %s", psz_file );
vlc_dialog_display_error( p_demux, _("Playback failure"),
_("DVDRead could not open the disc \"%s\"."), psz_file );
free( psz_file );
return VLC_EGENERIC;
}
free( psz_file );
/* Ifo allocation & initialisation */
if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
{
char rgsz_volid[32];
if( DVDUDFVolumeInfo( p_dvdread, rgsz_volid, 32, NULL, 0 ) )
{
if( DVDISOVolumeInfo( p_dvdread, rgsz_volid, 32, NULL, 0 ) == 0 )
{
vlc_dialog_display_error( p_demux, _("Playback failure"),
_("Cannot play a non-UDF mastered DVD." ) );
msg_Err( p_demux, "Invalid UDF DVD. (Found ISO9660 '%s')", rgsz_volid );
}
}
msg_Warn( p_demux, "cannot open %cMG info", ( type == DVD_V ? 'V' : 'A' ) );
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "%cMG opened", ( type == DVD_V ? 'V' : 'A' ) );
/* Fill p_demux field */
DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
ps_track_init( p_sys->tk );
p_sys->i_sar_num = 0;
p_sys->i_sar_den = 0;
p_sys->p_dvdread = p_dvdread;
p_sys->p_vmg_file = p_vmg_file;
p_sys->p_title = NULL;
p_sys->p_vts_file = NULL;
p_sys->updates = 0;
p_sys->i_title = p_sys->i_chapter = -1;
p_sys->cur_title = p_sys->cur_chapter = 0;
p_sys->i_mux_rate = 0;
p_sys->i_angle = var_CreateGetInteger( p_demux, "dvdread-angle" );
if( p_sys->i_angle <= 0 ) p_sys->i_angle = 1;
/* store type state internally */
p_sys->type = type;
DemuxTitles( p_demux, &p_sys->i_angle );
if( SET_AREA( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
{
msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
p_sys->i_angle );
Close( p_this );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*Call Backs*/
static int Open( vlc_object_t *p_this )
{
if( OpenCommon( p_this, DVD_V ) != VLC_SUCCESS )
{
msg_Dbg( p_this, "Trying DVD-Audio as a fallback" );
return OpenCommon( p_this, DVD_A );
}
return VLC_SUCCESS;
}
static int OpenAudio( vlc_object_t *p_this )
{
return OpenCommon( p_this, DVD_A );
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
for( int i = 0; i < PS_TK_COUNT; i++ )
{
ps_track_t *tk = &p_sys->tk[i];
if( tk->b_configured )
{
es_format_Clean( &tk->fmt );
if( tk->es ) es_out_Del( p_demux->out, tk->es );
}
}
/* Free the array of titles */
for( int i = 0; i < p_sys->i_titles; i++ )
vlc_input_title_Delete( p_sys->titles[i] );
TAB_CLEAN( p_sys->i_titles, p_sys->titles );
/* Close libdvdread */
if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
DVDClose( p_sys->p_dvdread );
free( p_sys );
}
static vlc_tick_t dvdtime_to_time( dvd_time_t *dtime )
{
/* Macro to convert Binary Coded Decimal to Decimal */
#define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
double f_fps, f_ms;
int64_t sec = (int64_t)(BCD2D(dtime->hour)) * 60 * 60;
sec += (int64_t)(BCD2D(dtime->minute)) * 60;
sec += (int64_t)(BCD2D(dtime->second));
switch((dtime->frame_u & 0xc0) >> 6)
{
case 1:
f_fps = 25.0;
break;
case 3:
f_fps = 29.97;
break;
default:
f_fps = 2500.0;
break;
}
f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
return vlc_tick_from_sec(sec) + VLC_TICK_FROM_MS(f_ms);
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
demux_sys_t *p_sys = p_demux->p_sys;
double f, *pf;
bool *pb;
input_title_t ***ppp_title;
int *pi_int;
int i;
if(unlikely(!p_sys->p_vts_file))
return VLC_EGENERIC;
switch( i_query )
{
case DEMUX_GET_POSITION:
{
pf = va_arg( args, double * );
if( p_sys->i_title_blocks )
*pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
else
*pf = 0.0;
return VLC_SUCCESS;
}
case DEMUX_SET_POSITION:
{
f = va_arg( args, double );
#ifdef DVDREAD_HAS_DVDAUDIO
if ( p_sys->type == DVD_A )
return DvdAudioReadSeek( p_demux, f * p_sys->i_title_blocks );
else
#endif
return DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
}
case DEMUX_GET_TIME:
if( p_sys->cur_title >= 0 && p_sys->cur_title < p_sys->i_titles )
{
vlc_tick_t length;
#ifdef DVDREAD_HAS_DVDAUDIO
if (p_sys->type == DVD_A )
length = FROM_SCALE_NZ( ( uint64_t ) p_sys->p_title_table->length_pts );
else
#endif
length = dvdtime_to_time( &p_sys->p_cur_pgc->playback_time );
*va_arg( args, vlc_tick_t * ) = p_sys->i_title_offset * length
/ p_sys->i_title_blocks;
return VLC_SUCCESS;
}
*va_arg( args, vlc_tick_t * ) = 0;
return VLC_EGENERIC;
case DEMUX_GET_LENGTH:
if( p_sys->cur_title >= 0 && p_sys->cur_title < p_sys->i_titles )
{
vlc_tick_t length;
#ifdef DVDREAD_HAS_DVDAUDIO
if ( p_sys->type == DVD_A )
length = FROM_SCALE_NZ( ( uint64_t ) p_sys->p_title_table->length_pts );
else
#endif
length = dvdtime_to_time( &p_sys->p_cur_pgc->playback_time );
*va_arg( args, vlc_tick_t * ) = length;
return VLC_SUCCESS;
}
*va_arg( args, vlc_tick_t * ) = 0;
return VLC_EGENERIC;
/* Special for access_demux */
case DEMUX_CAN_PAUSE:
case DEMUX_CAN_SEEK:
case DEMUX_CAN_CONTROL_PACE:
/* TODO */
pb = va_arg( args, bool * );
*pb = true;
return VLC_SUCCESS;
case DEMUX_SET_PAUSE_STATE:
return VLC_SUCCESS;
case DEMUX_GET_TITLE_INFO:
ppp_title = va_arg( args, input_title_t *** );
pi_int = va_arg( args, int * );
*va_arg( args, int * ) = 1; /* Title offset */
*va_arg( args, int * ) = 1; /* Chapter offset */
/* Duplicate title infos */
*pi_int = 0;
*ppp_title = vlc_alloc( p_sys->i_titles, sizeof(input_title_t *) );
if(!*ppp_title)
return VLC_EGENERIC;
for (i = 0; i < p_sys->i_titles; i++)
{
input_title_t *p_dup = vlc_input_title_Duplicate(p_sys->titles[i]);
if(p_dup)
(*ppp_title)[(*pi_int)++] = p_dup;
}
return VLC_SUCCESS;
case DEMUX_SET_TITLE:
i = va_arg( args, int );
if( SET_AREA( p_demux, i, 0, -1 ) != VLC_SUCCESS )
{
msg_Warn( p_demux, "cannot set title/chapter" );
return VLC_EGENERIC;
}
p_sys->updates |= INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
p_sys->cur_title = i;
p_sys->cur_chapter = 0;
return VLC_SUCCESS;
case DEMUX_SET_SEEKPOINT:
i = va_arg( args, int );
if( SET_AREA(p_demux, -1, i, -1) != VLC_SUCCESS )
{
msg_Warn( p_demux, "cannot set title/chapter" );
return VLC_EGENERIC;
}
p_sys->updates |= INPUT_UPDATE_SEEKPOINT;
p_sys->cur_chapter = i;
msg_Dbg( p_demux,"Cur_chapter is: %d",p_sys->cur_chapter );
return VLC_SUCCESS;
case DEMUX_TEST_AND_CLEAR_FLAGS:
{
unsigned *restrict flags = va_arg(args, unsigned *);
*flags &= p_sys->updates;
p_sys->updates &= ~*flags;
return VLC_SUCCESS;
}
case DEMUX_GET_TITLE:
*va_arg( args, int * ) = p_sys->cur_title;
return VLC_SUCCESS;
case DEMUX_GET_SEEKPOINT:
*va_arg( args, int * ) = p_sys->cur_chapter;
return VLC_SUCCESS;
case DEMUX_GET_PTS_DELAY:
*va_arg( args, vlc_tick_t * ) =
VLC_TICK_FROM_MS(var_InheritInteger( p_demux, "disc-caching" ));
return VLC_SUCCESS;
case DEMUX_GET_TYPE:
*va_arg( args, int* ) = ITEM_TYPE_DISC;
return VLC_SUCCESS;
/* TODO implement others */
default:
return VLC_EGENERIC;
}
}
/*****************************************************************************
* Demux:
*****************************************************************************/
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
dvd_type_t type = p_sys->type;
if(unlikely(!p_sys->p_vts_file))
return VLC_DEMUXER_EOF;
uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
int i_blocks_once, i_read;
#ifdef DVDREAD_HAS_DVDAUDIO
bool at_end_of_title =
(type == DVD_V && p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells)
|| (type == DVD_A && p_sys->i_cur_block>= p_sys->i_title_end_block);
#else
bool at_end_of_title =
(type == DVD_V && p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells);
#endif
/*
* Playback by cell in this pgc, starting at the cell for our chapter.
*/
/* there are no system packets containing navigation information in DVD-A,
* and an AOB file just contains a single audio stream */
/*
* Check end of pack, and select the following one
*/
if( !p_sys->i_pack_len && type == DVD_V )
{
/* Read NAV packet */
if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
1, p_buffer ) != 1 )
{
msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
vlc_dialog_display_error( p_demux, _("Playback failure"),
_("DVDRead could not read block %d."),
p_sys->i_next_vobu );
return -1;
}
/* Basic check to be sure we don't have a empty title
* go to next title if so */
//assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
/* Parse the contained dsi packet */
DvdReadHandleDSI( p_demux, p_buffer );
if( p_sys->i_pack_len >= 1024 )
{
msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
"This shouldn't happen!", p_sys->i_pack_len );
return 0; /* EOF */
}
p_sys->i_cur_block++;
p_sys->i_title_offset++;
}
#ifdef DVDREAD_HAS_DVDAUDIO
else if( !p_sys->i_pack_len && type == DVD_A )
{
p_sys->i_pack_len = p_sys->i_title_blocks;
p_sys->i_cur_block = p_sys->p_title_table->atsi_track_pointer_rows[p_sys->i_chapter].start_sector;
}
#endif
if( at_end_of_title )
{
int k = p_sys->i_title;
/* Looking for a not broken title */
while( k < p_sys->i_titles &&
SET_AREA( p_demux, ++k, 0, -1 ) != VLC_SUCCESS )
{
msg_Err(p_demux, "Failed next title, trying another: %i", k );
if( k >= p_sys->i_titles )
return 0; // EOF
}
}
/*
* Read actual data
*/
i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
p_sys->i_pack_len -= i_blocks_once;
/* Reads from DVD */
i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
i_blocks_once, p_buffer );
if( i_read != i_blocks_once )
{
msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
i_read, i_blocks_once, p_sys->i_cur_block );
vlc_dialog_display_error( p_demux, _("Playback failure"),
_("DVDRead could not read %d/%d blocks at 0x%02x."),
i_read, i_blocks_once, p_sys->i_cur_block );
return -1;
}
p_sys->i_cur_block += i_read;
p_sys->i_title_offset += i_read;
#if 0
msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
i_read, p_sys->i_pack_len, p_sys->i_cur_block );
#endif
for( int i = 0; i < i_read; i++ )
{
DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
DVD_VIDEO_LB_LEN );
}
return 1;
}
/*****************************************************************************
* DemuxBlock: demux a given block
*****************************************************************************/
static int DemuxBlock( demux_t *p_demux, const uint8_t *p, int len )
{
demux_sys_t *p_sys = p_demux->p_sys;
while( len > 0 )
{
int i_size = ps_pkt_size( p, len );
if( i_size <= 0 || i_size > len )
{
break;
}
/* Create a block */
block_t *p_pkt = block_Alloc( i_size );
memcpy( p_pkt->p_buffer, p, i_size);
/* Parse it and send it */
switch( 0x100 | p[3] )
{
case 0x1b9:
case 0x1bb:
case 0x1bc:
#ifdef DVDREAD_DEBUG
if( p[3] == 0xbc )
{
msg_Warn( p_demux, "received a PSM packet" );
}
else if( p[3] == 0xbb )
{
msg_Warn( p_demux, "received a SYSTEM packet" );
}
#endif
block_Release( p_pkt );
break;
case 0x1ba:
{
vlc_tick_t i_scr;
int i_mux_rate;
if( !ps_pkt_parse_pack( p_pkt->p_buffer, p_pkt->i_buffer,
&i_scr, &i_mux_rate ) )
{
es_out_SetPCR( p_demux->out, VLC_TICK_0 + i_scr );
if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;
}
block_Release( p_pkt );
break;
}
default:
{
int i_id = ps_pkt_id( p_pkt->p_buffer, p_pkt->i_buffer, p_sys->type == DVD_A ? PS_SOURCE_AOB : PS_SOURCE_VOB );
if( i_id >= 0xc0 )
{
ps_track_t *tk = &p_sys->tk[ps_id_to_tk(i_id)];
if( !tk->b_configured )
{
ESNew( p_demux, i_id, 0 );
}
if( tk->es &&
!ps_pkt_parse_pes( VLC_OBJECT(p_demux), p_pkt, tk->i_skip ) )
{
es_out_Send( p_demux->out, tk->es, p_pkt );
}
else
{
block_Release( p_pkt );
}
}
else
{
block_Release( p_pkt );
}
break;
}
}
p += i_size;
len -= i_size;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* ESNew: register a new elementary stream
*****************************************************************************/
static void ESNew( demux_t *p_demux, int i_id, int i_lang )
{
demux_sys_t *p_sys = p_demux->p_sys;
ps_track_t *tk = &p_sys->tk[ps_id_to_tk(i_id)];
char psz_language[3];
if( tk->b_configured ) return;
if( ps_track_fill( tk, NULL, i_id, NULL, 0, true ) )
{
msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
return;
}
psz_language[0] = psz_language[1] = psz_language[2] = 0;
if( i_lang && i_lang != 0xffff )
{
psz_language[0] = (i_lang >> 8)&0xff;
psz_language[1] = (i_lang )&0xff;
}
/* Add a new ES */
if( tk->fmt.i_cat == VIDEO_ES )
{
tk->fmt.video.i_sar_num = p_sys->i_sar_num;
tk->fmt.video.i_sar_den = p_sys->i_sar_den;
}
else if( tk->fmt.i_cat == AUDIO_ES )
{
#if 0
int i_audio = -1;
/* find the audio number PLEASE find another way */
if( (i_id&0xbdf8) == 0xbd88 ) /* dts */
{
i_audio = i_id&0x07;
}
else if( (i_id&0xbdf0) == 0xbd80 ) /* a52 */
{
i_audio = i_id&0xf;
}
else if( (i_id&0xbdf0) == 0xbda0 ) /* lpcm */
{
i_audio = i_id&0x1f;
}
else if( ( i_id&0xe0 ) == 0xc0 ) /* mpga */
{
i_audio = i_id&0x1f;
}
#endif
if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
}
else if( tk->fmt.i_cat == SPU_ES )
{
/* Palette */
tk->fmt.subs.spu.b_palette = true;
static_assert(sizeof(tk->fmt.subs.spu.palette) == sizeof(p_sys->clut),
"CLUT palette size mismatch");
memcpy( tk->fmt.subs.spu.palette, p_sys->clut, sizeof( p_sys->clut ) );
if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
}
tk->es = es_out_Add( p_demux->out, &tk->fmt );
tk->b_configured = true;
}
/*****************************************************************************
* DvdReadSetArea: initialize input data for title x, chapter y.
* It should be called for each user navigation request.
*****************************************************************************
* Take care that i_title and i_chapter start from 0.
*****************************************************************************/
static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
int i_angle )
{
VLC_UNUSED( i_angle );
demux_sys_t *p_sys = p_demux->p_sys;
int pgc_id = 0, pgn = 0;
if( i_title >= 0 && i_title < p_sys->i_titles &&
i_title != p_sys->i_title )
{
int i_start_cell, i_end_cell;
if( p_sys->p_title != NULL )
{
DVDCloseFile( p_sys->p_title );
p_sys->p_title = NULL;
}
p_sys->i_title = i_title;
const ifo_handle_t *p_vmg = p_sys->p_vmg_file;
/*
* We have to load all title information
*/
msg_Dbg( p_demux, "open VTS %d, for title %d",
p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
/* Ifo vts */
if( p_sys->p_vts_file != NULL )
ifoClose( p_sys->p_vts_file );
if( !( p_sys->p_vts_file = ifoOpen( p_sys->p_dvdread,
p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
{
msg_Err( p_demux, "fatal error in vts ifo" );
return VLC_EGENERIC;
}
const ifo_handle_t *p_vts = p_sys->p_vts_file;
/* Title position inside the selected vts */
p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
/* Find title start/end */
pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
const pgc_t *p_pgc =
p_sys->p_cur_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
if( p_pgc->cell_playback == NULL )
{
msg_Err( p_demux, "Invalid PGC (cell_playback_offset)" );
return VLC_EGENERIC;
}
p_sys->i_title_start_cell =
i_start_cell = p_pgc->program_map[pgn - 1] - 1;
p_sys->i_title_start_block =
p_pgc->cell_playback[i_start_cell].first_sector;
p_sys->i_title_end_cell =
i_end_cell = p_pgc->nr_of_cells - 1;
p_sys->i_title_end_block =
p_pgc->cell_playback[i_end_cell].last_sector;
p_sys->i_title_offset = 0;
p_sys->i_title_blocks = 0;
for( int i = i_start_cell; i <= i_end_cell; i++ )
{
const uint32_t cell_blocks = p_pgc->cell_playback[i].last_sector -
p_pgc->cell_playback[i].first_sector + 1;
if(unlikely( cell_blocks == 0 || cell_blocks > INT_MAX ||
INT_MAX - p_sys->i_title_blocks < cell_blocks ))
return VLC_EGENERIC;
p_sys->i_title_blocks += cell_blocks;
}
msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
"start %d end %d blocks: %u",
i_title + 1, p_sys->i_ttn, pgc_id, pgn,
p_sys->i_title_start_block, p_sys->i_title_end_block,
p_sys->i_title_blocks );
/*
* Set properties for current chapter
*/
p_sys->i_chapter = 0;
p_sys->i_chapters =
p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
pgc_id = p_vts->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
pgn = p_vts->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
p_sys->i_pack_len = 0;
p_sys->i_next_cell =
p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
DvdReadFindCell( p_demux );
p_sys->i_next_vobu = p_sys->i_cur_block =
p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
/*
* Angle management
*/
p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
/*
* We've got enough info, time to open the title set data.
*/
if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
p_vmg->tt_srpt->title[i_title].title_set_nr,
DVD_READ_TITLE_VOBS ) ) )
{
msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
p_vmg->tt_srpt->title[i_title].title_set_nr );
return VLC_EGENERIC;
}
//IfoPrintTitle( p_demux );
/*
* Destroy obsolete ES by reinitializing program 0
* and find all ES in title with ifo data
*/
es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
for( int i = 0; i < PS_TK_COUNT; i++ )
{
ps_track_t *tk = &p_sys->tk[i];
if( tk->b_configured )
{
es_format_Clean( &tk->fmt );
if( tk->es ) es_out_Del( p_demux->out, tk->es );
}
tk->b_configured = false;
}
if( p_sys->cur_title != i_title )
{
p_sys->updates |= INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
p_sys->cur_title = i_title;
p_sys->cur_chapter = 0;
}
/* TODO: re-add angles */
ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
const video_attr_t *p_attr = &p_vts->vtsi_mat->vts_video_attr;
int i_video_height = p_attr->video_format != 0 ? 576 : 480;
int i_video_width;
switch( p_attr->picture_size )
{
case 0:
i_video_width = 720;
break;
case 1:
i_video_width = 704;
break;
case 2:
i_video_width = 352;
break;
default:
case 3:
i_video_width = 352;
i_video_height /= 2;
break;
}
switch( p_attr->display_aspect_ratio )
{
case 0:
p_sys->i_sar_num = 4 * i_video_height;
p_sys->i_sar_den = 3 * i_video_width;
break;
case 3:
p_sys->i_sar_num = 16 * i_video_height;
p_sys->i_sar_den = 9 * i_video_width;
break;
default:
p_sys->i_sar_num = 0;
p_sys->i_sar_den = 0;
break;
}
/* Audio ES, in the order they appear in the .ifo */
for( int i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
{
int i_position = 0;
uint16_t i_id;
//IfoPrintAudio( p_demux, i );
/* Audio channel is active if first byte is 0x80 */
uint16_t i_audio_control = p_pgc->audio_control[i-1];
if( i_audio_control & 0x8000 )
{
i_position = ( i_audio_control & 0x7F00 ) >> 8;
msg_Dbg( p_demux, "audio position %d", i_position );
switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
{
case 0x00: /* A52 */
i_id = (0x80 + i_position) | PS_PACKET_ID_MASK_VOB;
break;
case 0x02:
case 0x03: /* MPEG audio */
i_id = 0xc000 + i_position;
break;
case 0x04: /* LPCM */
i_id = (0xa0 + i_position) | PS_PACKET_ID_MASK_VOB;
break;
case 0x06: /* DTS */
i_id = (0x88 + i_position) | PS_PACKET_ID_MASK_VOB;
break;
default:
i_id = 0;
msg_Err( p_demux, "unknown audio type %.2x",
p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
}
ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
vts_audio_attr[i - 1].lang_code );
}
}
static_assert(sizeof(p_sys->clut) == sizeof(p_pgc->palette),
"mismatch CLUT size");
memcpy( p_sys->clut, p_pgc->palette, sizeof( p_sys->clut ) );
/* Sub Picture ES */
for( int i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
{
int i_position = 0;
uint16_t i_id;
uint32_t i_spu_control = p_pgc->subp_control[i-1];
//IfoPrintSpu( p_sys, i );
msg_Dbg( p_demux, "spu %d 0x%02x", i, i_spu_control );
if( i_spu_control & 0x80000000 )
{
/* there are several streams for one spu */
if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
{
/* 16:9 */
switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
{
case 1: /* letterbox */
i_position = i_spu_control & 0xff;
break;
case 2: /* pan&scan */
i_position = ( i_spu_control >> 8 ) & 0xff;
break;
default: /* widescreen */
i_position = ( i_spu_control >> 16 ) & 0xff;
break;
}
}
else
{
/* 4:3 */
i_position = ( i_spu_control >> 24 ) & 0x7F;
}
i_id = (0x20 + i_position) | PS_PACKET_ID_MASK_VOB;
ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
vts_subp_attr[i - 1].lang_code );
}
}
}
else if( i_title != -1 && i_title != p_sys->i_title )
{
return VLC_EGENERIC; /* Couldn't set title */
}
/*
* Chapter selection
*/
if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
{
const ifo_handle_t *p_vts = p_sys->p_vts_file;
pgc_id = p_vts->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
pgn = p_vts->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[i_chapter].pgn;
const pgc_t *p_pgc =
p_sys->p_cur_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
if( p_pgc->cell_playback == NULL )
return VLC_EGENERIC; /* Couldn't set chapter */
p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
p_sys->i_chapter = i_chapter;
DvdReadFindCell( p_demux );
p_sys->i_title_offset = 0;
for( int i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
{
p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
p_pgc->cell_playback[i].first_sector + 1;
}
p_sys->i_pack_len = 0;
p_sys->i_next_vobu = p_sys->i_cur_block =
p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
if( p_sys->cur_chapter != i_chapter )
{
p_sys->updates |= INPUT_UPDATE_SEEKPOINT;
p_sys->cur_chapter = i_chapter;
}
}
else if( i_chapter != -1 )
{
return VLC_EGENERIC; /* Couldn't set chapter */
}
return VLC_SUCCESS;
}
#ifdef DVDREAD_HAS_DVDAUDIO
/* function different enough to warrant a seperate implementation*/
static int DvdAudioReadSetArea( demux_t *p_demux, int i_title, int i_track,
int i_angle )
{
VLC_UNUSED( i_angle );
demux_sys_t *p_sys = p_demux->p_sys;
if( i_title >= 0 && i_title < p_sys->i_titles &&
i_title != p_sys->i_title )
{
if( p_sys->p_title != NULL )
{
DVDCloseFile( p_sys->p_title );
p_sys->p_title = NULL;
}
p_sys->i_title = i_title;
/* reusing p_vmg variable for p_amg */
const ifo_handle_t *p_vmg = p_sys->p_vmg_file;
/*
* We have to load all title information
*/
msg_Dbg( p_demux, "open ATS %d, for group %d",
p_vmg->info_table_second_sector->tracks_info[i_title].group_property, i_title+ 1 );
/* Ifo ats */
/* reusing p_vts variable for p_ats */
if( p_sys->p_vts_file != NULL )
ifoClose( p_sys->p_vts_file );
if( !( p_sys->p_vts_file = ifoOpen( p_sys->p_dvdread,
p_vmg->info_table_second_sector->tracks_info[i_title].group_property ) ) )
{
msg_Err( p_demux, "fatal error in ats ifo" );
return VLC_EGENERIC;
}
const ifo_handle_t *p_vts = p_sys->p_vts_file;
/* Title position inside the selected ats, i_title is the overall title number */
p_sys->i_ttn = p_vmg->info_table_second_sector->tracks_info[i_title].title_property;
const atsi_title_record_t *atsi_title_table=
p_sys->p_title_table = &p_vts->atsi_title_table->atsi_title_row_tables[p_sys->i_ttn-1];
p_sys->i_chapter = 0;
p_sys->i_chapters =
p_vts->atsi_title_table->atsi_title_row_tables[p_sys->i_ttn - 1].nr_pointer_records;
/* there are no cells in dvd audio, bellow the start and end sectors of the title set. */
p_sys->i_title_start_block = atsi_title_table->atsi_track_pointer_rows[0].start_sector;
p_sys->i_title_end_block = atsi_title_table->atsi_track_pointer_rows[p_sys->i_chapters - 1].end_sector;
p_sys->i_title_blocks = p_sys->i_title_end_block - p_sys->i_title_start_block + 1;
msg_Dbg( p_demux, "title %d ttn %d start %d end %d blocks: %u",
i_title, p_sys->i_ttn,
p_sys->i_title_start_block, p_sys->i_title_end_block,
p_sys->i_title_blocks );
/* The structure of DVD-A discs seems to be the following
* each ATS IFO-> is a GROUP -> Contains multiple titles, Span across one or more AOBs -> each title contains multiple tracks or "Trackpoints",
*
* trackpoints are counted as tracks. They have records in the pointer table, and nr_pointer_records will include trackpoints. this is why it is different to nr_tracks*/
/*
* Set properties for current track, consider i_chapter as tracks/trackpoints
*/
/*
* We've got enough info, time to open the ATS AOB, indexed by "group_property"
*/
if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
p_vmg->info_table_second_sector->tracks_info[i_title].group_property,
DVD_READ_TITLE_VOBS ) ) )
{
msg_Err( p_demux, "cannot open title (ATS_%02d_1.AOB)",
p_vmg->info_table_second_sector->tracks_info[i_title].group_property );
return VLC_EGENERIC;
}
/* for now we are using the "second table, which includes no VOB tracks, assuming that if a user wants to open the video side he will select the standard DVD option"*/
/*
* Destroy obsolete ES by reinitializing program 0
* and find all ES in title with ifo data
*/
es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
for( int i = 0; i < PS_TK_COUNT; i++ )
{
ps_track_t *tk = &p_sys->tk[i];
if( tk->b_configured )
{
es_format_Clean( &tk->fmt );
if( tk->es ) es_out_Del( p_demux->out, tk->es );
}
tk->b_configured = false;
}
if( p_sys->cur_title != i_title)
{
p_sys->updates |= INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
p_sys->cur_title = i_title;
p_sys->cur_chapter = 0;
}
}
else if( i_title != -1 && i_title != p_sys->i_title )
{
return VLC_EGENERIC; /* Couldn't set title */
}
/*
* Chapter selection
*/
if( i_track >= 0 && i_track < p_sys->i_chapters )
{
p_sys->i_chapter = i_track;
p_sys->i_title_offset = p_sys->p_title_table->atsi_track_pointer_rows[i_track].start_sector
- p_sys->p_title_table->atsi_track_pointer_rows[0].start_sector;
msg_Dbg(p_demux, "Title Offset: %d", p_sys->i_title_offset);
p_sys->i_pack_len = 0;
/* current block relative to start of title*/
p_sys->i_cur_block=p_sys->p_title_table->atsi_track_pointer_rows[i_track].start_sector;
if( p_sys->cur_chapter != i_track)
{
p_sys->updates |= INPUT_UPDATE_SEEKPOINT;
p_sys->cur_chapter = i_track;
}
}
else if( i_track != -1 )
{
msg_Dbg( p_demux, "Couldn't set chapter" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
#endif
/*****************************************************************************
* DvdReadSeek : Goes to a given position on the stream.
*****************************************************************************
* This one is used by the input and translate chronological position from
* input to logical position on the device.
*****************************************************************************/
static int DvdReadSeek( demux_t *p_demux, uint32_t i_block_offset )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_chapter = 0;
int i_cell = 0;
uint32_t i_block;
const pgc_t *p_pgc = p_sys->p_cur_pgc;
const ifo_handle_t *p_vts = p_sys->p_vts_file;
/* Find cell */
i_block = i_block_offset;
for( i_cell = p_sys->i_title_start_cell;
i_cell <= p_sys->i_title_end_cell; i_cell++ )
{
if( i_block < p_pgc->cell_playback[i_cell].last_sector -
p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
i_block -= (p_pgc->cell_playback[i_cell].last_sector -
p_pgc->cell_playback[i_cell].first_sector + 1);
}
if( i_cell > p_sys->i_title_end_cell )
{
msg_Err( p_demux, "couldn't find cell for block %u", i_block_offset );
return VLC_EGENERIC;
}
i_block += p_pgc->cell_playback[i_cell].first_sector;
p_sys->i_title_offset = i_block_offset;
/* Find chapter */
for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
{
int pgc_id, pgn, i_tmp;
pgc_id = p_vts->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
pgn = p_vts->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[i_chapter].pgn;
i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
if( i_tmp > i_cell ) break;
}
if( i_chapter < p_sys->i_chapters &&
p_sys->cur_chapter != i_chapter )
{
p_sys->updates |= INPUT_UPDATE_SEEKPOINT;
p_sys->cur_chapter = i_chapter;
}
/* Find vobu */
/* see ifo_read.c / ifoRead_VOBU_ADMAP_internal for index count */
int i_vobu = 1;
const size_t i_vobu_sect_index_count =
(p_vts->vts_vobu_admap->last_byte + 1 - VOBU_ADMAP_SIZE) /
sizeof(*p_vts->vts_vobu_admap->vobu_start_sectors);
for( size_t i=0; i<i_vobu_sect_index_count; i++ )
{
if( p_vts->vts_vobu_admap->vobu_start_sectors[i] > i_block )
break;
i_vobu = i + 1;
}
#if 1
int i_sub_cell = 1;
/* Find sub_cell */
/* need to check cell # <= vob count as cell table alloc only ensures:
* info_length / sizeof(cell_adr_t) < c_adt->nr_of_vobs, see ifo_read.c */
const uint32_t vobu_start_sector = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1];
for( int i = 0; i + 1<p_vts->vts_c_adt->nr_of_vobs; i++ )
{
const cell_adr_t *p_cell = &p_vts->vts_c_adt->cell_adr_table[i];
if(p_cell->start_sector <= vobu_start_sector)
i_sub_cell = i + 1;
}
msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
"cell_sector %d vobu_sector %d sub_cell_sector %d",
i_cell, i_sub_cell, i_chapter, i_vobu,
p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
#endif
p_sys->i_cur_block = i_block;
if(likely( (size_t)i_vobu < i_vobu_sect_index_count ))
p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
else
p_sys->i_next_vobu = i_block;
p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
p_sys->i_cur_cell = i_cell;
p_sys->i_chapter = i_chapter;
DvdReadFindCell( p_demux );
return VLC_SUCCESS;
}
#ifdef DVDREAD_HAS_DVDAUDIO
static int DvdAudioReadSeek( demux_t *p_demux, uint32_t i_block_offset ){
demux_sys_t *p_sys = p_demux->p_sys;
int i_chapter;
uint32_t i_seek_blocks = 0;
/* set pack length */
/* set current block*/
/* find current chapter */
for ( i_chapter = 0 ; i_chapter < p_sys->i_chapters; i_chapter++ ) {
uint32_t start = p_sys->p_title_table->atsi_track_pointer_rows[i_chapter].start_sector;
uint32_t end = p_sys->p_title_table->atsi_track_pointer_rows[i_chapter].end_sector;
uint32_t chapter_len= end-start;
if ( i_block_offset < i_seek_blocks + chapter_len )
break;
i_seek_blocks += chapter_len;
}
if( i_chapter < p_sys->i_chapters &&
p_sys->cur_chapter != i_chapter )
{
p_sys->updates |= INPUT_UPDATE_SEEKPOINT;
p_sys->cur_chapter = i_chapter;
}
p_sys->i_cur_block = p_sys->p_title_table->atsi_track_pointer_rows[i_chapter].start_sector;
p_sys->i_pack_len = 4;
p_sys->i_title_offset = i_block_offset;
p_sys->i_chapter = i_chapter;
return VLC_SUCCESS;
}
#endif
/*****************************************************************************
* DvdReadHandleDSI
*****************************************************************************/
static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
{
demux_sys_t *p_sys = p_demux->p_sys;
/* Check we are really on a DSI packet
* http://www.mpucoder.com/DVD/dsi_pkt.html
* Some think it's funny to fill with 0x42 */
const uint8_t dsiheader[7] = { 0x00, 0x00, 0x01, 0xbf, 0x03, 0xfa, 0x01 };
if(!memcmp(&p_data[DSI_START_BYTE-7], dsiheader, 7))
{
navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
/*
* Determine where we go next. These values are the ones we mostly
* care about.
*/
p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
/*
* If we're not at the end of this cell, we can determine the next
* VOBU to display using the VOBU_SRI information section of the
* DSI. Using this value correctly follows the current angle,
* avoiding the doubled scenes in The Matrix, and makes our life
* really happy.
*/
p_sys->i_next_vobu = p_sys->i_cur_block +
( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
}
else
{
/* resync after decoy/corrupted titles */
msg_Warn(p_demux, "Invalid DSI packet in VOBU %d found, skipping Cell %d / %d",
p_sys->i_next_vobu, p_sys->i_cur_cell, p_sys->i_title_end_cell);
p_sys->dsi_pack.vobu_sri.next_vobu = SRI_END_OF_CELL;
}
if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
&& p_sys->i_angle > 1 )
{
switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
{
case 0x4:
/* Interleaved unit with no angle */
if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
{
p_sys->i_next_vobu = p_sys->i_cur_block +
p_sys->dsi_pack.sml_pbi.ilvu_sa;
p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
}
else
{
p_sys->i_next_vobu = p_sys->i_cur_block +
p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
}
break;
case 0x5:
/* vobu is end of ilvu */
if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
{
p_sys->i_next_vobu = p_sys->i_cur_block +
p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
break;
}
/* fall through */
case 0x6:
/* vobu is beginning of ilvu */
case 0x9:
/* next scr is 0 */
case 0xa:
/* entering interleaved section */
case 0x8:
/* non interleaved cells in interleaved section */
default:
p_sys->i_next_vobu = p_sys->i_cur_block +
( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
break;
}
}
else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
{
p_sys->i_cur_cell = p_sys->i_next_cell;
/* End of title */
if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
DvdReadFindCell( p_demux );
p_sys->i_next_vobu =
p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
}
#if 0
msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
p_sys->dsi_pack.dsi_gi.nv_pck_scr,
p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
p_sys->dsi_pack.dsi_gi.vobu_ea,
p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
p_sys->dsi_pack.dsi_gi.vobu_c_idn,
dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm ) );
msg_Dbg( p_demux, "cell duration: %lld",
dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time ) );
msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
p_sys->dsi_pack.sml_pbi.category,
p_sys->dsi_pack.sml_pbi.ilvu_ea,
p_sys->dsi_pack.sml_pbi.ilvu_sa,
p_sys->dsi_pack.sml_pbi.size );
msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
#endif
}
/*****************************************************************************
* DvdReadFindCell
*****************************************************************************/
static void DvdReadFindCell( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
const pgc_t *p_pgc;
int pgc_id, pgn;
int i = 0;
const cell_playback_t *cell = p_sys->p_cur_pgc->cell_playback;
if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
{
p_sys->i_cur_cell += p_sys->i_angle - 1;
while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
{
i++;
}
p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
}
else
{
p_sys->i_next_cell = p_sys->i_cur_cell + 1;
}
if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
{
p_sys->i_chapter++;
if( p_sys->i_chapter < p_sys->i_chapters &&
p_sys->cur_chapter != p_sys->i_chapter )
{
p_sys->updates |= INPUT_UPDATE_SEEKPOINT;
p_sys->cur_chapter = p_sys->i_chapter;
}
}
}
/*****************************************************************************
* DemuxTitles: get the titles/chapters or group/tracks structure
*****************************************************************************/
static void DemuxTitles( demux_t *p_demux, int *pi_angle )
{
VLC_UNUSED( pi_angle );
demux_sys_t *p_sys = p_demux->p_sys;
input_title_t *t;
seekpoint_t *s;
/* Find out number of titles/chapters */
int32_t i_titles;
#ifdef DVDREAD_HAS_DVDAUDIO
if ( p_sys->type == DVD_A )
i_titles = p_sys->p_vmg_file->info_table_second_sector->nr_of_titles;
else
#endif
i_titles = p_sys->p_vmg_file->tt_srpt->nr_of_srpts;
msg_Dbg( p_demux, "number of titles: %d", i_titles );
for( int i = 0; i < i_titles; i++ )
{
int32_t i_chapters = 0;
int j;
#ifdef DVDREAD_HAS_DVDAUDIO
if ( p_sys->type == DVD_A )
i_chapters = p_sys->p_vmg_file->info_table_second_sector->tracks_info[i].nr_chapters_in_title;
else
#endif
i_chapters = p_sys->p_vmg_file->tt_srpt->title[i].nr_of_ptts;
msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
t = vlc_input_title_New();
#ifdef DVDREAD_HAS_DVDAUDIO
if ( p_sys->type == DVD_A )
t->i_length = FROM_SCALE_NZ( p_sys->p_vmg_file->
info_table_second_sector->tracks_info[i].len_audio_zone_pts );
#endif
for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
{
s = vlc_seekpoint_New();
TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
}
TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
}
}