/* $Id: dvd.c,v 1.12 2005/11/25 15:05:25 titer Exp $
This file is part of the HandBrake source code.
- Homepage: <http://handbrake.m0k.org/>.
+ Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#include "hb.h"
int block;
int pack_len;
int next_vobu;
+ int in_cell;
+ int in_sync;
+ uint16_t cur_vob_id;
+ uint8_t cur_cell_id;
};
/***********************************************************************
/* Open device */
if( !( d->reader = DVDOpen( path ) ) )
{
- hb_log( "dvd: DVDOpen failed (%s)", path );
+ /*
+ * Not an error, may be a stream - which we'll try in a moment.
+ */
+ hb_log( "dvd: not a dvd - trying as a stream/file instead" );
goto fail;
}
/* Open main IFO */
if( !( d->vmg = ifoOpen( d->reader, 0 ) ) )
{
- hb_log( "dvd: ifoOpen failed" );
+ hb_error( "dvd: ifoOpen failed" );
goto fail;
}
hb_title_t * title;
ifo_handle_t * vts = NULL;
int pgc_id, pgn, i;
- hb_chapter_t * chapter, * chapter_old;
+ hb_chapter_t * chapter;
int c;
uint64_t duration;
float duration_correction;
/* VTS which our title is in */
title->vts = d->vmg->tt_srpt->title[t-1].title_set_nr;
+ if ( !title->vts )
+ {
+ /* A VTS of 0 means the title wasn't found in the title set */
+ hb_error("Invalid VTS (title set) number: %i", title->vts);
+ goto fail;
+ }
+
hb_log( "scan: opening IFO for VTS %d", title->vts );
if( !( vts = ifoOpen( d->reader, title->vts ) ) )
{
- hb_log( "scan: ifoOpen failed" );
+ hb_error( "scan: ifoOpen failed" );
goto fail;
}
pgn = vts->vts_ptt_srpt->title[title->ttn-1].ptt[0].pgn;
d->pgc = vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
+ hb_log("pgc_id: %d, pgn: %d: pgc: 0x%x", pgc_id, pgn, d->pgc);
+
+ if( !d->pgc )
+ {
+ hb_error( "scan: pgc not valid, skipping" );
+ goto fail;
+ }
+
+ if( pgn <= 0 || pgn > 99 )
+ {
+ hb_error( "scan: pgn %d not valid, skipping", pgn );
+ goto fail;
+ }
+
/* Start cell */
title->cell_start = d->pgc->program_map[pgn-1] - 1;
title->block_start = d->pgc->cell_playback[title->cell_start].first_sector;
title->cell_end, title->block_start, title->block_end,
title->block_count );
- if( title->block_count < 2048 )
- {
- hb_log( "scan: title too short (%d blocks), ignoring",
- title->block_count );
- goto fail;
- }
-
-
/* Get duration */
title->duration = 90LL * dvdtime2msec( &d->pgc->playback_time );
title->hours = title->duration / 90000 / 3600;
title->hours, title->minutes, title->seconds,
title->duration / 90 );
- /* Discard titles under 10 seconds */
- if( !( title->hours | title->minutes ) && title->seconds < 10 )
+ /* ignore titles under 10 seconds because they're often stills or
+ * clips with no audio & our preview code doesn't currently handle
+ * either of these. */
+ if( title->duration < 900000LL )
{
hb_log( "scan: ignoring title (too short)" );
goto fail;
{
case 0x00:
audio->id = ( ( 0x80 + position ) << 8 ) | 0xbd;
- audio->codec = HB_ACODEC_AC3;
+ audio->config.in.codec = HB_ACODEC_AC3;
break;
case 0x02:
case 0x03:
audio->id = 0xc0 + position;
- audio->codec = HB_ACODEC_MPGA;
+ audio->config.in.codec = HB_ACODEC_MPGA;
break;
case 0x04:
audio->id = ( ( 0xa0 + position ) << 8 ) | 0xbd;
- audio->codec = HB_ACODEC_LPCM;
+ audio->config.in.codec = HB_ACODEC_LPCM;
+ break;
+
+ case 0x06:
+ audio->id = ( ( 0x88 + position ) << 8 ) | 0xbd;
+ audio->config.in.codec = HB_ACODEC_DCA;
break;
default:
audio->id = 0;
- audio->codec = 0;
+ audio->config.in.codec = 0;
hb_log( "scan: unknown audio codec (%x)",
audio_format );
break;
lang = lang_for_code( vts->vtsi_mat->vts_audio_attr[i].lang_code );
- snprintf( audio->lang, sizeof( audio->lang ), "%s (%s)",
+ snprintf( audio->config.lang.description, sizeof( audio->config.lang.description ), "%s (%s)",
strlen(lang->native_name) ? lang->native_name : lang->eng_name,
- audio->codec == HB_ACODEC_AC3 ? "AC3" : ( audio->codec ==
- HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) );
- snprintf( audio->lang_simple, sizeof( audio->lang_simple ), "%s",
+ audio->config.in.codec == HB_ACODEC_AC3 ? "AC3" : ( audio->config.in.codec ==
+ HB_ACODEC_DCA ? "DTS" : ( audio->config.in.codec ==
+ HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) ) );
+ snprintf( audio->config.lang.simple, sizeof( audio->config.lang.simple ), "%s",
strlen(lang->native_name) ? lang->native_name : lang->eng_name );
- snprintf( audio->iso639_2, sizeof( audio->iso639_2 ), "%s",
+ snprintf( audio->config.lang.iso639_2, sizeof( audio->config.lang.iso639_2 ), "%s",
lang->iso639_2);
hb_log( "scan: id=%x, lang=%s, 3cc=%s", audio->id,
- audio->lang, audio->iso639_2 );
+ audio->config.lang.description, audio->config.lang.iso639_2 );
+ audio->config.in.track = i;
hb_list_add( title->list_audio, audio );
}
pgc_t * pgc_next;
chapter = calloc( sizeof( hb_chapter_t ), 1 );
- chapter->index = c;
+ /* remember the on-disc chapter number */
+ chapter->index = i + 1;
pgc_id = vts->vts_ptt_srpt->title[title->ttn-1].ptt[i].pgcn;
pgn = vts->vts_ptt_srpt->title[title->ttn-1].ptt[i].pgn;
FindNextCell( d );
d->cell_cur = d->cell_next;
}
-
- if( chapter->block_count < 2048 && chapter->index > 1 )
- {
- hb_log( "scan: chapter %d too short (%d blocks, "
- "cells=%d->%d), merging", chapter->index,
- chapter->block_count, chapter->cell_start,
- chapter->cell_end );
- chapter_old = hb_list_item( title->list_chapter,
- chapter->index - 2 );
- chapter_old->cell_end = chapter->cell_end;
- chapter_old->block_end = chapter->block_end;
- chapter_old->block_count += chapter->block_count;
- free( chapter );
- chapter = chapter_old;
- }
- else
- {
- hb_list_add( title->list_chapter, chapter );
- c++;
- }
+ hb_list_add( title->list_chapter, chapter );
+ c++;
}
/* The durations we get for chapters aren't precise. Scale them so
d->ttn = d->vmg->tt_srpt->title[title-1].vts_ttn;
if( !( d->ifo = ifoOpen( d->reader, d->vts ) ) )
{
- hb_log( "dvd: ifoOpen failed for VTS %d", d->vts );
+ hb_error( "dvd: ifoOpen failed for VTS %d", d->vts );
return 0;
}
if( !( d->file = DVDOpenFile( d->reader, d->vts,
DVD_READ_TITLE_VOBS ) ) )
{
- hb_log( "dvd: DVDOpenFile failed for VTS %d", d->vts );
+ hb_error( "dvd: DVDOpenFile failed for VTS %d", d->vts );
return 0;
}
d->next_vobu = d->block;
d->pack_len = 0;
d->cell_overlap = 0;
-
+ d->in_cell = 0;
+ d->in_sync = 2;
+
return 1;
}
if( count < sizeCell )
{
d->cell_cur = i;
+ d->cur_cell_id = 0;
FindNextCell( d );
/* Now let hb_dvd_read find the next VOBU */
return 0;
}
+ /*
+ * Assume that we are in sync, even if we are not given that it is obvious
+ * that we are out of sync if we have just done a seek.
+ */
+ d->in_sync = 2;
+
return 1;
}
/***********************************************************************
* is_nav_pack
- ***********************************************************************
- * Pretty much directly lifted from libdvdread's play_title function.
- **********************************************************************/
+ ***********************************************************************/
int is_nav_pack( unsigned char *buf )
{
- return ( buf[41] == 0xbf && buf[1027] == 0xbf );
+ /*
+ * The NAV Pack is comprised of the PCI Packet and DSI Packet, both
+ * of these start at known offsets and start with a special identifier.
+ *
+ * NAV = {
+ * PCI = { 00 00 01 bf # private stream header
+ * ?? ?? # length
+ * 00 # substream
+ * ...
+ * }
+ * DSI = { 00 00 01 bf # private stream header
+ * ?? ?? # length
+ * 01 # substream
+ * ...
+ * }
+ *
+ * The PCI starts at offset 0x26 into the sector, and the DSI starts at 0x400
+ *
+ * This information from: http://dvd.sourceforge.net/dvdinfo/
+ */
+ if( ( buf[0x26] == 0x00 && // PCI
+ buf[0x27] == 0x00 &&
+ buf[0x28] == 0x01 &&
+ buf[0x29] == 0xbf &&
+ buf[0x2c] == 0x00 ) &&
+ ( buf[0x400] == 0x00 && // DSI
+ buf[0x401] == 0x00 &&
+ buf[0x402] == 0x01 &&
+ buf[0x403] == 0xbf &&
+ buf[0x406] == 0x01 ) )
+ {
+ return ( 1 );
+ } else {
+ return ( 0 );
+ }
}
**********************************************************************/
int hb_dvd_read( hb_dvd_t * d, hb_buffer_t * b )
{
+ top:
if( !d->pack_len )
{
/* New pack */
dsi_t dsi_pack;
- int error;
+ int error = 0;
+
+ // if we've just finished the last cell of the title we don't
+ // want to read another block because our next_vobu pointer
+ // is probably invalid. Just return 'no data' & our caller
+ // should check and discover we're at eof.
+ if ( d->cell_cur > d->cell_end )
+ return 0;
- error = 0;
-
for( ;; )
{
- int block, pack_len, next_vobu;
+ int block, pack_len, next_vobu, read_retry;
- if( DVDReadBlocks( d->file, d->next_vobu, 1, b->data ) != 1 )
+ for( read_retry = 0; read_retry < 3; read_retry++ )
{
- hb_log( "dvd: DVDReadBlocks failed (%d)", d->next_vobu );
- return 0;
+ if( DVDReadBlocks( d->file, d->next_vobu, 1, b->data ) == 1 )
+ {
+ /*
+ * Successful read.
+ */
+ break;
+ } else {
+ hb_log( "dvd: Read Error on blk %d, attempt %d",
+ d->next_vobu, read_retry );
+ }
+ }
+
+ if( read_retry == 3 )
+ {
+ hb_log( "dvd: vobu read error blk %d - skipping to cell %d",
+ d->next_vobu, d->cell_next );
+ d->cell_cur = d->cell_next;
+ if ( d->cell_cur > d->cell_end )
+ return 0;
+ d->in_cell = 0;
+ d->next_vobu = d->pgc->cell_playback[d->cell_cur].first_sector;
+ FindNextCell( d );
+ d->cell_overlap = 1;
+ continue;
}
- if ( !is_nav_pack( b->data ) ) {
+ if ( !is_nav_pack( b->data ) ) {
(d->next_vobu)++;
+ if( d->in_sync == 1 ) {
+ hb_log("dvd: Lost sync, searching for NAV pack at blk %d",
+ d->next_vobu);
+ d->in_sync = 0;
+ }
continue;
}
navRead_DSI( &dsi_pack, &b->data[DSI_START_BYTE] );
-
+
+ if ( d->in_sync == 0 && d->cur_cell_id &&
+ (d->cur_vob_id != dsi_pack.dsi_gi.vobu_vob_idn ||
+ d->cur_cell_id != dsi_pack.dsi_gi.vobu_c_idn ) )
+ {
+ // We walked out of the cell we're supposed to be in.
+ // If we're not at the start of our next cell go there.
+ hb_log("dvd: left cell %d (%u,%u) for (%u,%u) at block %u",
+ d->cell_cur, d->cur_vob_id, d->cur_cell_id,
+ dsi_pack.dsi_gi.vobu_vob_idn, dsi_pack.dsi_gi.vobu_c_idn,
+ d->next_vobu );
+ if ( d->next_vobu != d->pgc->cell_playback[d->cell_next].first_sector )
+ {
+ d->next_vobu = d->pgc->cell_playback[d->cell_next].first_sector;
+ d->cur_cell_id = 0;
+ continue;
+ }
+ }
+
block = dsi_pack.dsi_gi.nv_pck_lbn;
pack_len = dsi_pack.dsi_gi.vobu_ea;
- next_vobu = block + ( dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
+
+ // There are a total of 21 next vobu offsets (and 21 prev_vobu
+ // offsets) in the navpack SRI structure. The primary one is
+ // 'next_vobu' which is the offset (in dvd blocks) from the current
+ // block to the start of the next vobu. If the block at 'next_vobu'
+ // can't be read, 'next_video' is the offset to the vobu closest to it.
+ // The other 19 offsets are vobus at successively longer distances from
+ // the current block (this is so that a hardware player can do
+ // adaptive error recovery to skip over a bad spot on the disk). In all
+ // these offsets the high bit is set to indicate when it contains a
+ // valid offset. The next bit (2^30) is set to indicate that there's
+ // another valid offset in the SRI that's closer to the current block.
+ // A hardware player uses these bits to chose the closest valid offset
+ // and uses that as its next vobu. (Some mastering schemes appear to
+ // put a bogus offset in next_vobu with the 2^30 bit set & the
+ // correct offset in next_video. This works fine in hardware players
+ // but will mess up software that doesn't implement the full next
+ // vobu decision logic.) In addition to the flag bits there's a
+ // reserved value of the offset that indicates 'no next vobu' (which
+ // indicates the end of a cell). But having no next vobu pointer with a
+ // 'valid' bit set also indicates end of cell. Different mastering
+ // schemes seem to use all possible combinations of the flag bits
+ // and reserved values to indicate end of cell so we have to check
+ // them all or we'll get a disk read error from following an
+ // invalid offset.
+ uint32_t next_ptr = dsi_pack.vobu_sri.next_vobu;
+ if ( ( next_ptr & ( 1 << 31 ) ) == 0 ||
+ ( next_ptr & ( 1 << 30 ) ) != 0 ||
+ ( next_ptr & 0x3fffffff ) == 0x3fffffff )
+ {
+ next_ptr = dsi_pack.vobu_sri.next_video;
+ if ( ( next_ptr & ( 1 << 31 ) ) == 0 ||
+ ( next_ptr & 0x3fffffff ) == 0x3fffffff )
+ {
+ // don't have a valid forward pointer - assume end-of-cell
+ d->block = block;
+ d->pack_len = pack_len;
+ break;
+ }
+ }
+ next_vobu = block + ( next_ptr & 0x3fffffff );
if( pack_len > 0 &&
pack_len < 1024 &&
( block <= d->title_start + d->title_block_count ||
block <= d->title_end ) )
{
- /* XXX
- This looks like a valid VOBU, but actually we are
- just hoping */
- if( error )
- {
-#if 0
- hb_log( "dvd: found VOBU at %d (b %d, l %d, n %d)",
- d->next_vobu, block, pack_len, next_vobu );
-#endif
- }
d->block = block;
d->pack_len = pack_len;
d->next_vobu = next_vobu;
}
/* Wasn't a valid VOBU, try next block */
- if( !error )
- {
-#if 0
- hb_log( "dvd: looking for a VOBU (%d)", d->next_vobu );
-#endif
- }
-
if( ++error > 1024 )
{
hb_log( "dvd: couldn't find a VOBU after 1024 blocks" );
(d->next_vobu)++;
}
- if( dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
+ if( d->in_sync == 0 || d->in_sync == 2 )
{
- d->cell_cur = d->cell_next;
- d->next_vobu = d->pgc->cell_playback[d->cell_cur].first_sector;
- FindNextCell( d );
- d->cell_overlap = 1;
- printf("DVD: End of Cell\n");
+ if( d->in_sync == 0 )
+ {
+ hb_log( "dvd: In sync with DVD at block %d", d->block );
+ }
+ d->in_sync = 1;
}
-
+
// Revert the cell overlap, and check for a chapter break
- if( dsi_pack.vobu_sri.prev_vobu == SRI_END_OF_CELL )
+ // If this cell is zero length (prev_vobu & next_vobu both
+ // set to END_OF_CELL) we need to check for beginning of
+ // cell before checking for end or we'll advance to the next
+ // cell too early and fail to generate a chapter mark when this
+ // cell starts a chapter.
+ if( ( dsi_pack.vobu_sri.prev_vobu & (1 << 31 ) ) == 0 ||
+ ( dsi_pack.vobu_sri.prev_vobu & 0x3fffffff ) == 0x3fffffff )
+ {
+ // A vobu that's not at the start of a cell can have an
+ // EOC prev pointer (this seems to be associated with some
+ // sort of drm). The rest of the content in the cell may be
+ // booby-trapped so treat this like an end-of-cell rather
+ // than a beginning of cell.
+ if ( d->pgc->cell_playback[d->cell_cur].first_sector < dsi_pack.dsi_gi.nv_pck_lbn &&
+ d->pgc->cell_playback[d->cell_cur].last_sector >= dsi_pack.dsi_gi.nv_pck_lbn )
+ {
+ hb_log( "dvd: null prev_vobu in cell %d at block %d", d->cell_cur,
+ d->block );
+ // treat like end-of-cell then go directly to start of next cell.
+ d->cell_cur = d->cell_next;
+ d->in_cell = 0;
+ d->next_vobu = d->pgc->cell_playback[d->cell_cur].first_sector;
+ FindNextCell( d );
+ d->cell_overlap = 1;
+ goto top;
+ }
+ else
+ {
+ if ( d->block != d->pgc->cell_playback[d->cell_cur].first_sector )
+ {
+ hb_log( "dvd: beginning of cell %d at block %d", d->cell_cur,
+ d->block );
+ }
+ if( d->in_cell )
+ {
+ hb_error( "dvd: assuming missed end of cell %d", d->cell_cur );
+ d->cell_cur = d->cell_next;
+ d->next_vobu = d->pgc->cell_playback[d->cell_cur].first_sector;
+ FindNextCell( d );
+ d->cell_overlap = 1;
+ d->in_cell = 0;
+ } else {
+ d->in_cell = 1;
+ }
+ d->cur_vob_id = dsi_pack.dsi_gi.vobu_vob_idn;
+ d->cur_cell_id = dsi_pack.dsi_gi.vobu_c_idn;
+
+ if( d->cell_overlap )
+ {
+ b->new_chap = hb_dvd_is_break( d );
+ d->cell_overlap = 0;
+ }
+ }
+ }
+
+ if( ( dsi_pack.vobu_sri.next_vobu & (1 << 31 ) ) == 0 ||
+ ( dsi_pack.vobu_sri.next_vobu & 0x3fffffff ) == 0x3fffffff )
{
- printf("DVD: Beginning of Cell\n");
- if( d->cell_overlap )
+ if ( d->block <= d->pgc->cell_playback[d->cell_cur].first_sector ||
+ d->block > d->pgc->cell_playback[d->cell_cur].last_sector )
{
- b->new_chap = hb_dvd_is_break( d );
- d->cell_overlap = 0;
+ hb_log( "dvd: end of cell %d at block %d", d->cell_cur,
+ d->block );
}
+ d->cell_cur = d->cell_next;
+ d->in_cell = 0;
+ d->next_vobu = d->pgc->cell_playback[d->cell_cur].first_sector;
+ FindNextCell( d );
+ d->cell_overlap = 1;
+
}
}
else
{
if( DVDReadBlocks( d->file, d->block, 1, b->data ) != 1 )
{
- hb_log( "reader: DVDReadBlocks failed (%d)", d->block );
- return 0;
+ // this may be a real DVD error or may be DRM. Either way
+ // we don't want to quit because of one bad block so set
+ // things up so we'll advance to the next vobu and recurse.
+ hb_error( "dvd: DVDReadBlocks failed (%d), skipping to vobu %u",
+ d->block, d->next_vobu );
+ d->pack_len = 0;
+ goto top; /* XXX need to restructure this routine & avoid goto */
}
d->pack_len--;
}
{
int i;
int pgc_id, pgn;
- int nr_of_ptts = d->ifo->vts_ptt_srpt->title[d->ttn-1].nr_of_ptts;
+ int nr_of_ptts = d->ifo->vts_ptt_srpt->title[d->ttn-1].nr_of_ptts;
pgc_t * pgc;
for( i = nr_of_ptts - 1;
/***********************************************************************
* hb_dvd_is_break
***********************************************************************
- * Returns 1 if the current block is a new chapter start
+ * Returns chapter number if the current block is a new chapter start
**********************************************************************/
int hb_dvd_is_break( hb_dvd_t * d )
{
- int i, j;
+ int i;
int pgc_id, pgn;
int nr_of_ptts = d->ifo->vts_ptt_srpt->title[d->ttn-1].nr_of_ptts;
pgc_t * pgc;
- int cell, chapter_length, cell_end;
-
+ int cell;
+
for( i = nr_of_ptts - 1;
i > 0;
i-- )
// This must not match against the start cell.
if( pgc->cell_playback[cell].first_sector == d->block && cell != d->cell_start )
{
- /* Check to see if we merged this chapter into the previous one... */
- /* As a note, merging chapters is probably bad practice for this very reason */
- chapter_length = 0;
-
- if( i == nr_of_ptts - 1 )
- {
- cell_end = d->pgc->nr_of_cells;
- }
- else
- {
- cell_end = pgc->program_map[pgn] - 1;
- }
-
- for( j = cell; j < cell_end; j++ )
- {
- chapter_length += pgc->cell_playback[j].last_sector + 1 -
- pgc->cell_playback[j].first_sector;
- }
-
- if( chapter_length >= 2048 )
- {
- printf("DVD: Chapter Break Cell Found\n");
- /* We have a chapter break */
- return 1;
- }
- else
- {
- printf("DVD: Cell Found (%d)\n", chapter_length);
- }
+ return i + 1;
}
}
-
+
return 0;
}
i++;
}
d->cell_next = d->cell_cur + i + 1;
+ hb_log( "dvd: Skipping multi-angle cells %d-%d",
+ d->cell_cur,
+ d->cell_next - 1 );
}
else
{
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