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Fix seeking with broken file or without index (close #1687)

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This commit is contained in:
Laurent Aimar 2008-08-01 22:21:44 +02:00
parent 96b4ee1ee2
commit d6abd400bf
1 changed files with 67 additions and 39 deletions
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106
modules/demux/mkv.cpp
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@ -113,6 +113,46 @@ extern "C" {
# include <zlib.h>
#endif
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin();
set_shortname( "Matroska" );
set_description( N_("Matroska stream demuxer" ) );
set_capability( "demux", 50 );
set_callbacks( Open, Close );
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_DEMUX );
add_bool( "mkv-use-ordered-chapters", 1, NULL,
N_("Ordered chapters"),
N_("Play ordered chapters as specified in the segment."), true );
add_bool( "mkv-use-chapter-codec", 1, NULL,
N_("Chapter codecs"),
N_("Use chapter codecs found in the segment."), true );
add_bool( "mkv-preload-local-dir", 1, NULL,
N_("Preload Directory"),
N_("Preload matroska files from the same family in the same directory (not good for broken files)."), true );
add_bool( "mkv-seek-percent", 0, NULL,
N_("Seek based on percent not time"),
N_("Seek based on percent not time."), true );
add_bool( "mkv-use-dummy", 0, NULL,
N_("Dummy Elements"),
N_("Read and discard unknown EBML elements (not good for broken files)."), true );
add_shortcut( "mka" );
add_shortcut( "mkv" );
vlc_module_end();
#define MATROSKA_COMPRESSION_NONE -1
#define MATROSKA_COMPRESSION_ZLIB 0
#define MATROSKA_COMPRESSION_BLIB 1
@ -397,44 +437,6 @@ typedef struct {
using namespace LIBMATROSKA_NAMESPACE;
using namespace std;
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin();
set_shortname( "Matroska" );
set_description( N_("Matroska stream demuxer" ) );
set_capability( "demux", 50 );
set_callbacks( Open, Close );
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_DEMUX );
add_bool( "mkv-use-ordered-chapters", 1, NULL,
N_("Ordered chapters"),
N_("Play ordered chapters as specified in the segment."), true );
add_bool( "mkv-use-chapter-codec", 1, NULL,
N_("Chapter codecs"),
N_("Use chapter codecs found in the segment."), true );
add_bool( "mkv-preload-local-dir", 1, NULL,
N_("Preload Directory"),
N_("Preload matroska files from the same family in the same directory (not good for broken files)."), true );
add_bool( "mkv-seek-percent", 0, NULL,
N_("Seek based on percent not time"),
N_("Seek based on percent not time."), true );
add_bool( "mkv-use-dummy", 0, NULL,
N_("Dummy Elements"),
N_("Read and discard unknown EBML elements (not good for broken files)."), true );
add_shortcut( "mka" );
add_shortcut( "mkv" );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
@ -553,7 +555,10 @@ class EbmlParser
void Keep( void );
EbmlElement *UnGet( uint64 i_block_pos, uint64 i_cluster_pos );
int GetLevel( void );
int GetLevel( void );
/* Is the provided element presents in our upper elements */
bool IsTopPresent( EbmlElement * );
private:
EbmlStream *m_es;
@ -1785,6 +1790,20 @@ int matroska_segment_c::BlockGet( KaxBlock * & pp_block, int64_t *pi_ref1, int64
return VLC_EGENERIC;
}
/* Verify that we are still inside our cluster
* It can happens whith broken files and when seeking
* without index */
if( i_level > 1 )
{
if( cluster && !ep->IsTopPresent( cluster ) )
{
msg_Warn( &sys.demuxer, "Unexpected escape from current cluster" );
cluster = NULL;
}
if( !cluster )
continue;
}
/* do parsing */
switch ( i_level )
{
@ -3892,6 +3911,15 @@ EbmlElement *EbmlParser::Get( void )
return m_el[mi_level];
}
bool EbmlParser::IsTopPresent( EbmlElement *el )
{
for( int i = 0; i < mi_level; i++ )
{
if( m_el[i] && m_el[i] == el )
return true;
}
return false;
}
/*****************************************************************************
* Tools