/
matroska_segment_parse.cpp
1803 lines (1627 loc) · 67.6 KB
/
matroska_segment_parse.cpp
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/*****************************************************************************
* matroska_segment_parse.cpp : matroska demuxer
*****************************************************************************
* Copyright (C) 2003-2010 VLC authors and VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Steve Lhomme <steve.lhomme@free.fr>
*
* 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.
*****************************************************************************/
#include "mkv.hpp"
#include "matroska_segment.hpp"
#include "chapters.hpp"
#include "demux.hpp"
#include "Ebml_parser.hpp"
#include "Ebml_dispatcher.hpp"
#include "string_dispatcher.hpp"
#include "util.hpp"
extern "C" {
#include "../vobsub.h"
#include "../xiph.h"
#include "../windows_audio_commons.h"
#include "../mp4/libmp4.h"
}
#include <vlc_codecs.h>
#include <stdexcept>
#include <limits>
/* GetFourCC helper */
#define GetFOURCC( p ) __GetFOURCC( (uint8_t*)p )
static vlc_fourcc_t __GetFOURCC( uint8_t *p )
{
return VLC_FOURCC( p[0], p[1], p[2], p[3] );
}
static inline void fill_extra_data_alac( mkv_track_t *p_tk )
{
if( p_tk->i_extra_data <= 0 ) return;
p_tk->fmt.p_extra = malloc( p_tk->i_extra_data + 12 );
if( unlikely( !p_tk->fmt.p_extra ) ) return;
p_tk->fmt.i_extra = p_tk->i_extra_data + 12;
uint8_t *p_extra = static_cast<uint8_t*>( p_tk->fmt.p_extra );
/* See "ALAC Specific Info (36 bytes) (required)" from
alac.macosforge.org/trac/browser/trunk/ALACMagicCookieDescription.txt */
SetDWBE( p_extra, p_tk->fmt.i_extra );
memcpy( p_extra + 4, "alac", 4 );
SetDWBE( p_extra + 8, 0 );
memcpy( p_extra + 12, p_tk->p_extra_data, p_tk->fmt.i_extra - 12 );
}
static inline void fill_extra_data( mkv_track_t *p_tk, unsigned int offset )
{
if(p_tk->i_extra_data <= offset) return;
p_tk->fmt.i_extra = p_tk->i_extra_data - offset;
p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
if(!p_tk->fmt.p_extra) { p_tk->fmt.i_extra = 0; return; };
memcpy( p_tk->fmt.p_extra, p_tk->p_extra_data + offset, p_tk->fmt.i_extra );
}
/*****************************************************************************
* Some functions to manipulate memory
*****************************************************************************/
static inline char * ToUTF8( const UTFstring &u )
{
return strdup( u.GetUTF8().c_str() );
}
/*****************************************************************************
* ParseSeekHead:
*****************************************************************************/
void matroska_segment_c::ParseSeekHead( KaxSeekHead *seekhead )
{
EbmlElement *l;
bool b_seekable;
i_seekhead_count++;
stream_Control( sys.demuxer.s, STREAM_CAN_SEEK, &b_seekable );
if( !b_seekable )
return;
EbmlParser eparser ( &es, seekhead, &sys.demuxer,
var_InheritBool( &sys.demuxer, "mkv-use-dummy" ) );
while( ( l = eparser.Get() ) != NULL )
{
if( MKV_IS_ID( l, KaxSeek ) )
{
EbmlId id = EBML_ID(EbmlVoid);
int64_t i_pos = -1;
#ifdef MKV_DEBUG
msg_Dbg( &sys.demuxer, "| | + Seek" );
#endif
eparser.Down();
try
{
while( ( l = eparser.Get() ) != NULL )
{
if( unlikely( !l->ValidateSize() ) )
{
msg_Err( &sys.demuxer,"%s too big... skipping it", typeid(*l).name() );
continue;
}
if( MKV_IS_ID( l, KaxSeekID ) )
{
KaxSeekID &sid = *static_cast<KaxSeekID*>( l );
sid.ReadData( es.I_O() );
id = EbmlId( sid.GetBuffer(), sid.GetSize() );
}
else if( MKV_IS_ID( l, KaxSeekPosition ) )
{
KaxSeekPosition &spos = *static_cast<KaxSeekPosition*>( l );
spos.ReadData( es.I_O() );
i_pos = (int64_t)segment->GetGlobalPosition( static_cast<uint64>( spos ) );
}
else if ( !MKV_IS_ID( l, EbmlVoid ) && !MKV_IS_ID( l, EbmlCrc32 ))
{
/* Many mkvmerge files hit this case. It seems to be a broken SeekHead */
msg_Dbg( &sys.demuxer, "| | + Unknown (%s)", typeid(*l).name() );
}
}
}
catch(...)
{
msg_Err( &sys.demuxer,"Error while reading %s", typeid(*l).name() );
}
eparser.Up();
if( i_pos >= 0 )
{
if( id == EBML_ID(KaxCluster) )
{
_seeker.add_cluster_position( i_pos );
}
else if( id == EBML_ID(KaxCues) )
{
msg_Dbg( &sys.demuxer, "| - cues at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxCues), i_pos );
}
else if( id == EBML_ID(KaxInfo) )
{
msg_Dbg( &sys.demuxer, "| - info at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxInfo), i_pos );
}
else if( id == EBML_ID(KaxChapters) )
{
msg_Dbg( &sys.demuxer, "| - chapters at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxChapters), i_pos );
}
else if( id == EBML_ID(KaxTags) )
{
msg_Dbg( &sys.demuxer, "| - tags at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxTags), i_pos );
}
else if( id == EBML_ID(KaxSeekHead) )
{
msg_Dbg( &sys.demuxer, "| - chained seekhead at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxSeekHead), i_pos );
}
else if( id == EBML_ID(KaxTracks) )
{
msg_Dbg( &sys.demuxer, "| - tracks at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxTracks), i_pos );
}
else if( id == EBML_ID(KaxAttachments) )
{
msg_Dbg( &sys.demuxer, "| - attachments at %" PRId64, i_pos );
LoadSeekHeadItem( EBML_INFO(KaxAttachments), i_pos );
}
#ifdef MKV_DEBUG
else if( id != EBML_ID(KaxCluster) && id != EBML_ID(EbmlVoid) &&
id != EBML_ID(EbmlCrc32))
msg_Dbg( &sys.demuxer, "| - unknown seekhead reference at %" PRId64, i_pos );
#endif
}
}
else if ( !MKV_IS_ID( l, EbmlVoid ) && !MKV_IS_ID( l, EbmlCrc32 ))
msg_Dbg( &sys.demuxer, "| | + ParseSeekHead Unknown (%s)", typeid(*l).name() );
}
}
/*****************************************************************************
* ParseTrackEntry:
*****************************************************************************/
void matroska_segment_c::ParseTrackEntry( KaxTrackEntry *m )
{
bool bSupported = true;
/* Init the track */
mkv_track_t track;
track.fmt.psz_language = strdup("English");
track.fmt.psz_description = NULL;
track.b_default = true;
track.b_enabled = true;
track.b_forced = false;
track.i_number = 0;
track.i_extra_data = 0;
track.p_extra_data = NULL;
track.psz_codec = NULL;
track.b_dts_only = false;
track.b_pts_only = false;
track.b_no_duration = false;
track.i_default_duration = 0;
track.f_timecodescale = 1.0;
track.i_last_dts = 0;
track.i_skip_until_fpos = -1;
std::memset( &track.fmt, 0, sizeof( track.fmt ) );
es_format_Init( &track.fmt, UNKNOWN_ES, 0 );
track.f_fps = 0;
track.p_es = NULL;
track.i_original_rate = 0;
track.i_chans_to_reorder = 0;
std::memset( &track.pi_chan_table, 0, sizeof( track.pi_chan_table ) );
track.p_sys = NULL;
track.b_inited = false;
track.i_data_init = 0;
track.p_data_init = NULL;
track.str_codec_name = "";
track.i_compression_type = MATROSKA_COMPRESSION_NONE;
track.i_encoding_scope = MATROSKA_ENCODING_SCOPE_ALL_FRAMES;
track.p_compression_data = NULL;
track.i_seek_preroll = 0;
track.i_codec_delay = 0;
MkvTree( sys.demuxer, 2, "Track Entry" );
struct MetaDataCapture {
matroska_segment_c * obj;
mkv_track_t * tk;
demux_t * p_demuxer;
bool& bSupported;
int level;
struct {
unsigned int i_crop_right;
unsigned int i_crop_left;
unsigned int i_crop_top;
unsigned int i_crop_bottom;
unsigned int i_display_unit;
unsigned int i_display_width;
unsigned int i_display_height;
} track_video_info;
} metadata_payload = {
this, &track, &sys.demuxer, bSupported, 3, { }
};
MKV_SWITCH_CREATE( EbmlTypeDispatcher, MetaDataHandlers, MetaDataCapture )
{
MKV_SWITCH_INIT();
static void debug (MetaDataCapture const& vars, char const * fmt, ...)
{
va_list args; va_start( args, fmt );
MkvTree_va( *vars.p_demuxer, vars.level, fmt, args);
va_end( args );
}
E_CASE( KaxTrackNumber, tnum )
{
vars.tk->i_number = static_cast<uint32>( tnum );
debug( vars, "Track Number=%u", vars.tk->i_number );
}
E_CASE( KaxTrackUID, tuid )
{
debug( vars, "Track UID=%u", static_cast<uint32>( tuid ) );
}
E_CASE( KaxTrackType, ttype )
{
const char *psz_type;
switch( static_cast<uint8>( ttype ) )
{
case track_audio:
psz_type = "audio";
vars.tk->fmt.i_cat = AUDIO_ES;
vars.tk->fmt.audio.i_channels = 1;
vars.tk->fmt.audio.i_rate = 8000;
break;
case track_video:
psz_type = "video";
vars.tk->fmt.i_cat = VIDEO_ES;
break;
case track_subtitle:
psz_type = "subtitle";
vars.tk->fmt.i_cat = SPU_ES;
break;
case track_buttons:
psz_type = "buttons";
vars.tk->fmt.i_cat = SPU_ES;
break;
default:
psz_type = "unknown";
vars.tk->fmt.i_cat = UNKNOWN_ES;
break;
}
debug( vars, "Track Type=%s", psz_type ) ;
}
E_CASE( KaxTrackFlagEnabled, fenb ) // UNUSED
{
vars.tk->b_enabled = static_cast<uint32>( fenb );
debug( vars, "Track Enabled=%u", vars.tk->b_enabled );
}
E_CASE( KaxTrackFlagDefault, fdef )
{
vars.tk->b_default = static_cast<uint32>( fdef );
debug( vars, "Track Default=%u", vars.tk->b_default );
}
E_CASE( KaxTrackFlagForced, ffor ) // UNUSED
{
vars.tk->b_forced = static_cast<uint32>( ffor );
debug( vars, "Track Forced=%u", vars.tk->b_forced );
}
E_CASE( KaxTrackFlagLacing, lac ) // UNUSED
{
debug( vars, "Track Lacing=%d", static_cast<uint32>( lac ) ) ;
}
E_CASE( KaxTrackMinCache, cmin ) // UNUSED
{
debug( vars, "Track MinCache=%d", static_cast<uint32>( cmin ) ) ;
}
E_CASE( KaxTrackMaxCache, cmax ) // UNUSED
{
debug( vars, "Track MaxCache=%d", static_cast<uint32>( cmax ) ) ;
}
E_CASE( KaxTrackDefaultDuration, defd )
{
vars.tk->i_default_duration = static_cast<uint64>(defd);
debug( vars, "Track Default Duration=%" PRId64, vars.tk->i_default_duration );
vars.tk->i_default_duration /= 1000;
}
E_CASE( KaxTrackTimecodeScale, ttcs )
{
vars.tk->f_timecodescale = static_cast<float>( ttcs );
if ( vars.tk->f_timecodescale <= 0 ) vars.tk->f_timecodescale = 1.0;
debug( vars, "Track TimeCodeScale=%f", vars.tk->f_timecodescale ) ;
}
E_CASE( KaxMaxBlockAdditionID, mbl ) // UNUSED
{
debug( vars, "Track Max BlockAdditionID=%d", static_cast<uint32>( mbl ) ) ;
}
E_CASE( KaxTrackName, tname )
{
vars.tk->fmt.psz_description = ToUTF8( UTFstring( tname ) );
debug( vars, "Track Name=%s", vars.tk->fmt.psz_description ) ;
}
E_CASE( KaxTrackLanguage, lang )
{
free( vars.tk->fmt.psz_language );
vars.tk->fmt.psz_language = strdup( std::string( lang ).c_str() );
debug( vars, "Track Language=`%s'", vars.tk->fmt.psz_language );
}
E_CASE( KaxCodecID, codecid )
{
vars.tk->psz_codec = strdup( std::string( codecid ).c_str() );
debug( vars, "Track CodecId=%s", std::string( codecid ).c_str() ) ;
}
E_CASE( KaxCodecPrivate, cpriv )
{
vars.tk->i_extra_data = cpriv.GetSize();
if( vars.tk->i_extra_data > 0 )
{
vars.tk->p_extra_data = static_cast<uint8_t*>( malloc( vars.tk->i_extra_data ) );
memcpy( vars.tk->p_extra_data, cpriv.GetBuffer(), vars.tk->i_extra_data );
}
debug( vars, "Track CodecPrivate size=%" PRId64, cpriv.GetSize() );
}
E_CASE( KaxCodecName, cname )
{
vars.tk->str_codec_name = static_cast<UTFstring const&>( cname ).GetUTF8();
debug( vars, "Track Codec Name=%s", vars.tk->str_codec_name.c_str() ) ;
}
//AttachmentLink
E_CASE( KaxCodecDecodeAll, cdall ) // UNUSED
{
debug( vars, "Track Codec Decode All=%u", static_cast<uint8>( cdall ) ) ;
}
E_CASE( KaxTrackOverlay, tovr ) // UNUSED
{
debug( vars, "Track Overlay=%u", static_cast<uint32>( tovr ) ) ;
}
#if LIBMATROSKA_VERSION >= 0x010401
E_CASE( KaxCodecDelay, codecdelay )
{
vars.tk->i_codec_delay = static_cast<uint64_t>( codecdelay ) / 1000;
msg_Dbg( vars.p_demuxer, "| | | + Track Codec Delay =%" PRIu64,
vars.tk->i_codec_delay );
}
E_CASE( KaxSeekPreRoll, spr )
{
vars.tk->i_seek_preroll = static_cast<uint64_t>( spr ) / 1000;
debug( vars, "Track Seek Preroll =%" PRIu64, vars.tk->i_seek_preroll );
}
#endif
E_CASE( KaxContentEncodings, cencs )
{
debug( vars, "Content Encodings" );
if ( cencs.ListSize () > 1 )
{
msg_Err( vars.p_demuxer, "Multiple Compression method not supported" );
vars.bSupported = false;
}
vars.level += 1;
dispatcher.iterate( cencs.begin(), cencs.end(), Payload( vars ) );
vars.level -= 1;
}
E_CASE( KaxContentEncoding, cenc )
{
debug( vars, "Content Encoding" );
vars.level += 1;
dispatcher.iterate( cenc.begin(), cenc.end(), Payload( vars ) );
vars.level -= 1;
}
E_CASE( KaxContentEncodingOrder, encord )
{
debug( vars, "Order: %i", static_cast<uint32>( encord ) );
}
E_CASE( KaxContentEncodingScope, encscope )
{
vars.tk->i_encoding_scope = static_cast<uint32>( encscope );
debug( vars, "Scope: %i", vars.tk->i_encoding_scope );
}
E_CASE( KaxContentEncodingType, enctype )
{
debug( vars, "Type: %i", static_cast<uint32>( enctype ) );
}
E_CASE( KaxContentCompression, compr )
{
debug( vars, "Content Compression" );
//Default compression type is 0 (Zlib)
vars.tk->i_compression_type = MATROSKA_COMPRESSION_ZLIB;
vars.level += 1;
dispatcher.iterate( compr.begin(), compr.end(), Payload( vars ) );
vars.level -= 1;
}
E_CASE( KaxContentCompAlgo, compalg )
{
vars.tk->i_compression_type = static_cast<uint32>( compalg );
debug( vars, "Compression Algorithm: %i", vars.tk->i_compression_type );
if ( ( vars.tk->i_compression_type != MATROSKA_COMPRESSION_ZLIB ) &&
( vars.tk->i_compression_type != MATROSKA_COMPRESSION_HEADER ) )
{
msg_Err( vars.p_demuxer, "Track Compression method %d not supported", vars.tk->i_compression_type );
vars.bSupported = false;
}
}
E_CASE( KaxContentCompSettings, kccs )
{
vars.tk->p_compression_data = new KaxContentCompSettings( kccs );
}
E_CASE( KaxTrackVideo, tkv )
{
debug( vars, "Track Video");
mkv_track_t *tk = vars.tk;
tk->f_fps = 0.0;
tk->fmt.video.i_frame_rate_base = static_cast<unsigned>( tk->i_default_duration );
tk->fmt.video.i_frame_rate = 1000000;
vars.level += 1;
dispatcher.iterate (tkv.begin (), tkv.end (), Payload( vars ) );
vars.level -= 1;
unsigned int i_crop_top = vars.track_video_info.i_crop_top;
unsigned int i_crop_right = vars.track_video_info.i_crop_right;
unsigned int i_crop_bottom = vars.track_video_info.i_crop_bottom;
unsigned int i_crop_left = vars.track_video_info.i_crop_left;
unsigned int i_display_unit = vars.track_video_info.i_display_unit; VLC_UNUSED(i_display_unit);
unsigned int i_display_width = vars.track_video_info.i_display_width;
unsigned int i_display_height = vars.track_video_info.i_display_height;
if( i_display_height && i_display_width )
{
tk->fmt.video.i_sar_num = i_display_width * tk->fmt.video.i_height;
tk->fmt.video.i_sar_den = i_display_height * tk->fmt.video.i_width;
}
tk->fmt.video.i_visible_width = tk->fmt.video.i_width;
tk->fmt.video.i_visible_height = tk->fmt.video.i_height;
if( i_crop_left || i_crop_right || i_crop_top || i_crop_bottom )
{
tk->fmt.video.i_x_offset = i_crop_left;
tk->fmt.video.i_y_offset = i_crop_top;
tk->fmt.video.i_visible_width -= i_crop_left + i_crop_right;
tk->fmt.video.i_visible_height -= i_crop_top + i_crop_bottom;
}
/* FIXME: i_display_* allows you to not only set DAR, but also a zoom factor.
we do not support this atm */
}
E_CASE( KaxVideoFlagInterlaced, fint ) // UNUSED
{
debug( vars, "Track Video Interlaced=%u", static_cast<uint8>( fint ) ) ;
}
E_CASE( KaxVideoStereoMode, stereo ) // UNUSED
{
debug( vars, "Track Video Stereo Mode=%u", static_cast<uint8>( stereo ) ) ;
}
E_CASE( KaxVideoPixelWidth, vwidth )
{
vars.tk->fmt.video.i_width += static_cast<uint16>( vwidth );
debug( vars, "width=%d", vars.tk->fmt.video.i_width );
}
E_CASE( KaxVideoPixelHeight, vheight )
{
vars.tk->fmt.video.i_height += static_cast<uint16>( vheight );
debug( vars, "height=%d", vars.tk->fmt.video.i_height );
}
E_CASE( KaxVideoDisplayWidth, vwidth )
{
vars.track_video_info.i_display_width = static_cast<uint16>( vwidth );
debug( vars, "display width=%d", vars.track_video_info.i_display_width );
}
E_CASE( KaxVideoDisplayHeight, vheight )
{
vars.track_video_info.i_display_height = static_cast<uint16>( vheight );
debug( vars, "display height=%d", vars.track_video_info.i_display_height );
}
E_CASE( KaxVideoPixelCropBottom, cropval )
{
vars.track_video_info.i_crop_bottom = static_cast<uint16>( cropval );
debug( vars, "crop pixel bottom=%d", vars.track_video_info.i_crop_bottom );
}
E_CASE( KaxVideoPixelCropTop, cropval )
{
vars.track_video_info.i_crop_top = static_cast<uint16>( cropval );
debug( vars, "crop pixel top=%d", vars.track_video_info.i_crop_top );
}
E_CASE( KaxVideoPixelCropRight, cropval )
{
vars.track_video_info.i_crop_right = static_cast<uint16>( cropval );
debug( vars, "crop pixel right=%d", vars.track_video_info.i_crop_right );
}
E_CASE( KaxVideoPixelCropLeft, cropval )
{
vars.track_video_info.i_crop_left = static_cast<uint16>( cropval );
debug( vars, "crop pixel left=%d", vars.track_video_info.i_crop_left );
}
E_CASE( KaxVideoDisplayUnit, vdmode )
{
vars.track_video_info.i_display_unit = static_cast<uint8>( vdmode );
debug( vars, "Track Video Display Unit=%s",
vars.track_video_info.i_display_unit == 0 ? "pixels" : ( vars.track_video_info.i_display_unit == 1 ? "centimeters": "inches" ) );
}
E_CASE( KaxVideoAspectRatio, ratio ) // UNUSED
{
debug( vars, "Track Video Aspect Ratio Type=%u", static_cast<uint8>( ratio ) ) ;
}
E_CASE( KaxVideoFrameRate, vfps )
{
vars.tk->f_fps = __MAX( static_cast<float>( vfps ), 1 );
debug( vars, "fps=%f", vars.tk->f_fps );
}
E_CASE( KaxVideoColourSpace, colourspace )
{
if ( colourspace.ValidateSize() )
{
char clrspc[5];
vars.tk->fmt.i_codec = GetFOURCC( colourspace.GetBuffer() );
vlc_fourcc_to_char( vars.tk->fmt.i_codec, clrspc );
clrspc[4] = '\0';
debug( vars, "Colour Space=%s", clrspc );
}
}
E_CASE( KaxTrackAudio, tka ) {
vars.tk->fmt.audio.i_channels = 1;
vars.tk->fmt.audio.i_rate = 8000;
debug( vars, "Track Audio");
vars.level += 1;
dispatcher.iterate( tka.begin(), tka.end(), Payload( vars ));
vars.level -= 1;
}
E_CASE( KaxAudioSamplingFreq, afreq )
{
float const value = static_cast<float>( afreq );
vars.tk->i_original_rate = value;
vars.tk->fmt.audio.i_rate = value;
debug( vars, "afreq=%d", vars.tk->fmt.audio.i_rate ) ;
}
E_CASE( KaxAudioOutputSamplingFreq, afreq )
{
vars.tk->fmt.audio.i_rate = static_cast<float>( afreq );
debug( vars, "aoutfreq=%d", vars.tk->fmt.audio.i_rate ) ;
}
E_CASE( KaxAudioChannels, achan )
{
vars.tk->fmt.audio.i_channels = static_cast<uint8>( achan );
debug( vars, "achan=%u", vars.tk->fmt.audio.i_channels );
}
E_CASE( KaxAudioBitDepth, abits )
{
vars.tk->fmt.audio.i_bitspersample = static_cast<uint8>( abits );
debug( vars, "abits=%u", vars.tk->fmt.audio.i_bitspersample);
}
E_CASE ( EbmlVoid, ) {
VLC_UNUSED( vars );
}
E_CASE_DEFAULT(element) {
debug( vars, "Unknown (%s)", typeid(element).name() );
}
};
MetaDataHandlers::Dispatcher().iterate ( m->begin(), m->end(), MetaDataHandlers::Payload( metadata_payload ) );
if( track.i_number == 0 )
{
msg_Warn( &sys.demuxer, "Missing KaxTrackNumber, discarding track!" );
return;
}
if ( bSupported )
{
#ifdef HAVE_ZLIB_H
if( track.i_compression_type == MATROSKA_COMPRESSION_ZLIB &&
track.i_encoding_scope & MATROSKA_ENCODING_SCOPE_PRIVATE &&
track.i_extra_data && track.p_extra_data &&
zlib_decompress_extra( &sys.demuxer, &track ) )
return;
#endif
if( TrackInit( &track ) )
{
msg_Err(&sys.demuxer, "Couldn't init track %u", track.i_number );
free(track.p_extra_data);
return;
}
tracks.insert( std::make_pair( track.i_number, track ) ); // TODO: add warning if two tracks have the same key
}
else
{
msg_Err( &sys.demuxer, "Track Entry %u not supported", track.i_number );
free(track.p_extra_data);
}
}
/*****************************************************************************
* ParseTracks:
*****************************************************************************/
void matroska_segment_c::ParseTracks( KaxTracks *tracks )
{
EbmlElement *el;
int i_upper_level = 0;
/* Master elements */
if( unlikely( tracks->IsFiniteSize() && tracks->GetSize() >= SIZE_MAX ) )
{
msg_Err( &sys.demuxer, "Track too big, aborting" );
return;
}
try
{
tracks->Read( es, EBML_CONTEXT(tracks), i_upper_level, el, true );
}
catch(...)
{
msg_Err( &sys.demuxer, "Couldn't read tracks" );
return;
}
struct Capture {
matroska_segment_c * obj;
demux_t * p_demuxer;
} payload = {
this, &sys.demuxer
};
MKV_SWITCH_CREATE( EbmlTypeDispatcher, TrackHandlers, struct Capture )
{
MKV_SWITCH_INIT();
E_CASE( KaxTrackEntry, track_number ) {
vars.obj->ParseTrackEntry( &track_number );
}
E_CASE( EbmlVoid, ) {
VLC_UNUSED( vars );
}
E_CASE_DEFAULT(element) {
MkvTree( *vars.p_demuxer, 2, "Unknown (%s)", typeid(element).name() );
}
};
TrackHandlers::Dispatcher().iterate(
tracks->begin(), tracks->end(), TrackHandlers::Payload( payload ) );
}
/*****************************************************************************
* ParseInfo:
*****************************************************************************/
void matroska_segment_c::ParseInfo( KaxInfo *info )
{
EbmlElement *el;
EbmlMaster *m;
int i_upper_level = 0;
/* Master elements */
m = static_cast<EbmlMaster *>(info);
if( unlikely( m->IsFiniteSize() && m->GetSize() >= SIZE_MAX ) )
{
msg_Err( &sys.demuxer, "Info too big, aborting" );
return;
}
try
{
m->Read( es, EBML_CONTEXT(info), i_upper_level, el, true );
}
catch(...)
{
msg_Err( &sys.demuxer, "Couldn't read info" );
return;
}
struct InfoHandlerPayload {
demux_t * p_demuxer;
matroska_segment_c * obj;
EbmlElement *& el;
EbmlMaster *& m;
int& i_upper_level;
} captures = { &sys.demuxer, this, el, m, i_upper_level };
MKV_SWITCH_CREATE(EbmlTypeDispatcher, InfoHandlers, InfoHandlerPayload)
{
MKV_SWITCH_INIT();
static void debug (InfoHandlerPayload& vars, char const * fmt, ...)
{
va_list args; va_start( args, fmt );
MkvTree_va( *vars.p_demuxer, 2, fmt, args);
va_end( args );
}
E_CASE( KaxSegmentUID, uid )
{
if ( vars.obj->p_segment_uid == NULL )
{
vars.obj->p_segment_uid = new KaxSegmentUID( uid );
}
debug( vars, "UID=%d", *reinterpret_cast<uint32*>( vars.obj->p_segment_uid->GetBuffer() ) );
}
E_CASE( KaxPrevUID, uid )
{
if ( vars.obj->p_prev_segment_uid == NULL )
{
vars.obj->p_prev_segment_uid = new KaxPrevUID( uid );
vars.obj->b_ref_external_segments = true;
}
debug( vars, "PrevUID=%d", *reinterpret_cast<uint32*>( vars.obj->p_prev_segment_uid->GetBuffer() ) );
}
E_CASE( KaxNextUID, uid )
{
if ( vars.obj->p_next_segment_uid == NULL )
{
vars.obj->p_next_segment_uid = new KaxNextUID( uid );
vars.obj->b_ref_external_segments = true;
}
debug( vars, "NextUID=%d", *reinterpret_cast<uint32*>( vars.obj->p_next_segment_uid->GetBuffer() ) );
}
E_CASE( KaxTimecodeScale, tcs )
{
vars.obj->i_timescale = static_cast<uint64>( tcs );
debug( vars, "TimecodeScale=%" PRId64, vars.obj->i_timescale );
}
E_CASE( KaxDuration, dur )
{
vars.obj->i_duration = mtime_t( static_cast<double>( dur ) );
debug( vars, "Duration=%" PRId64, vars.obj->i_duration );
}
E_CASE( KaxMuxingApp, mapp )
{
vars.obj->psz_muxing_application = ToUTF8( UTFstring( mapp ) );
debug( vars, "Muxing Application=%s", vars.obj->psz_muxing_application );
}
E_CASE( KaxWritingApp, wapp )
{
vars.obj->psz_writing_application = ToUTF8( UTFstring( wapp ) );
debug( vars, "Writing Application=%s", vars.obj->psz_writing_application );
}
E_CASE( KaxSegmentFilename, sfn )
{
vars.obj->psz_segment_filename = ToUTF8( UTFstring( sfn ) );
debug( vars, "Segment Filename=%s", vars.obj->psz_segment_filename );
}
E_CASE( KaxTitle, title )
{
vars.obj->psz_title = ToUTF8( UTFstring( title ) );
debug( vars, "Title=%s", vars.obj->psz_title );
}
E_CASE( KaxSegmentFamily, uid )
{
vars.obj->families.push_back( new KaxSegmentFamily(uid) );
debug( vars, "Family=%d", *reinterpret_cast<uint32*>( uid.GetBuffer() ) );
}
E_CASE( KaxDateUTC, date )
{
struct tm tmres;
char buffer[25];
time_t i_date = date.GetEpochDate();
if( gmtime_r( &i_date, &tmres ) &&
strftime( buffer, sizeof(buffer), "%a %b %d %H:%M:%S %Y",
&tmres ) )
{
vars.obj->psz_date_utc = strdup( buffer );
debug( vars, "Date=%s", vars.obj->psz_date_utc );
}
}
E_CASE( KaxChapterTranslate, trans )
{
MKV_SWITCH_CREATE( EbmlTypeDispatcher, TranslationHandler, chapter_translation_c* )
{
MKV_SWITCH_INIT();
E_CASE( KaxChapterTranslateEditionUID, uid )
{
vars->editions.push_back( static_cast<uint64>( uid ) );
}
E_CASE( KaxChapterTranslateCodec, codec_id )
{
vars->codec_id = static_cast<uint32>( codec_id );
}
E_CASE( KaxChapterTranslateID, translated_id )
{
vars->p_translated = new KaxChapterTranslateID( translated_id );
}
};
try
{
if( unlikely( trans.IsFiniteSize() && trans.GetSize() >= SIZE_MAX ) )
{
msg_Err( vars.p_demuxer, "Chapter translate too big, aborting" );
return;
}
trans.Read( vars.obj->es, EBML_CONTEXT(&trans), vars.i_upper_level, vars.el, true );
chapter_translation_c *p_translate = new chapter_translation_c();
TranslationHandler::Dispatcher().iterate(
trans.begin(), trans.end(), TranslationHandler::Payload( p_translate )
);
vars.obj->translations.push_back( p_translate );
}
catch(...)
{
msg_Err( vars.p_demuxer, "Error while reading Chapter Translate");
}
}
E_CASE( EbmlVoid, )
{
VLC_UNUSED( vars );
}
E_CASE_DEFAULT(element)
{
debug( vars, "Unknown (%s)", typeid(element).name() );
}
};
InfoHandlers::Dispatcher().iterate( m->begin(), m->end(), InfoHandlers::Payload( captures ) );
i_duration = mtime_t( static_cast<double>( i_duration * i_timescale ) / 10e5 );
if( !i_duration ) i_duration = -1;
}
/*****************************************************************************
* ParseChapterAtom
*****************************************************************************/
void matroska_segment_c::ParseChapterAtom( int i_level, KaxChapterAtom *ca, chapter_item_c & chapters )
{
MkvTree( sys.demuxer, 3, "ChapterAtom (level=%d)", i_level );
struct ChapterPayload {
matroska_segment_c * const obj;
demux_t * const p_demuxer;
chapter_item_c & chapters;
int& i_level;
int level;
} payload = {
this, &sys.demuxer, chapters,
i_level, 4
};
MKV_SWITCH_CREATE( EbmlTypeDispatcher, ChapterAtomHandlers, ChapterPayload )
{
MKV_SWITCH_INIT();
static void debug (ChapterPayload const& vars, char const * fmt, ...)
{
va_list args; va_start( args, fmt );
MkvTree_va( *vars.p_demuxer, vars.level, fmt, args);
va_end( args );
}
E_CASE( KaxChapterUID, uid )
{
vars.chapters.i_uid = static_cast<uint64_t>( uid );
debug( vars, "ChapterUID=%" PRIu64, vars.chapters.i_uid );
}
E_CASE( KaxChapterFlagHidden, flag )
{
vars.chapters.b_display_seekpoint = static_cast<uint8>( flag ) == 0;
debug( vars, "ChapterFlagHidden=%s", vars.chapters.b_display_seekpoint ? "no" : "yes" );
}
E_CASE( KaxChapterSegmentUID, uid )
{
vars.chapters.p_segment_uid = new KaxChapterSegmentUID( uid );
vars.obj->b_ref_external_segments = true;
debug( vars, "ChapterSegmentUID=%u", *reinterpret_cast<uint32*>( vars.chapters.p_segment_uid->GetBuffer() ) );
}
E_CASE( KaxChapterSegmentEditionUID, euid )
{
vars.chapters.p_segment_edition_uid = new KaxChapterSegmentEditionUID( euid );
debug( vars, "ChapterSegmentEditionUID=%u",
#if LIBMATROSKA_VERSION < 0x010300
*reinterpret_cast<uint32*>( vars.chapters.p_segment_edition_uid->GetBuffer() )
#else
static_cast<uint32>( *vars.chapters.p_segment_edition_uid )
#endif
);
}
E_CASE( KaxChapterTimeStart, start )
{
vars.chapters.i_start_time = static_cast<uint64>( start ) / INT64_C(1000);
debug( vars, "ChapterTimeStart=%" PRId64, vars.chapters.i_start_time );
}
E_CASE( KaxChapterTimeEnd, end )
{
vars.chapters.i_end_time = static_cast<uint64>( end ) / INT64_C(1000);
debug( vars, "ChapterTimeEnd=%" PRId64, vars.chapters.i_end_time );
}
E_CASE( KaxChapterDisplay, chapter_display )
{
debug( vars, "ChapterDisplay" );
vars.level += 1;
dispatcher.iterate( chapter_display.begin(), chapter_display.end(), Payload( vars ) );
vars.level -= 1;
}
E_CASE( KaxChapterString, name )
{
char *psz_tmp_utf8 = ToUTF8( UTFstring( name ) );
for ( int k = 0; k < vars.i_level; k++)
vars.chapters.psz_name += '+';
vars.chapters.psz_name += ' ';
vars.chapters.psz_name += psz_tmp_utf8;
vars.chapters.b_user_display = true;
debug( vars, "ChapterString=%s", psz_tmp_utf8 );
free( psz_tmp_utf8 );
}