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vlc/modules/demux/mp4/mp4.c

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/*****************************************************************************
* mp4.c : MP4 file input module for vlc
*****************************************************************************
* Copyright (C) 2001-2004, 2010 the VideoLAN team
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <vlc_charset.h> /* EnsureUTF8 */
#include <vlc_meta.h> /* vlc_meta_t, vlc_meta_ */
#include <vlc_input.h>
#include "libmp4.h"
#include "id3genres.h" /* for ATOM_gnre */
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin ()
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_DEMUX )
set_description( N_("MP4 stream demuxer") )
set_shortname( N_("MP4") )
set_capability( "demux", 240 )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Demux ( demux_t * );
static int DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
static int Seek ( demux_t *, mtime_t );
static int Control ( demux_t *, int, va_list );
/* Contain all information about a chunk */
typedef struct
{
uint64_t i_offset; /* absolute position of this chunk in the file */
uint32_t i_sample_description_index; /* index for SampleEntry to use */
uint32_t i_sample_count; /* how many samples in this chunk */
uint32_t i_sample_first; /* index of the first sample in this chunk */
/* now provide way to calculate pts, dts, and offset without too
much memory and with fast access */
/* with this we can calculate dts/pts without waste memory */
uint64_t i_first_dts; /* DTS of the first sample */
uint64_t i_last_dts; /* DTS of the last sample */
uint32_t *p_sample_count_dts;
uint32_t *p_sample_delta_dts; /* dts delta */
uint32_t *p_sample_count_pts;
int32_t *p_sample_offset_pts; /* pts-dts */
/* TODO if needed add pts
but quickly *add* support for edts and seeking */
} mp4_chunk_t;
/* Contain all needed information for read all track with vlc */
typedef struct
{
unsigned int i_track_ID;/* this should be unique */
int b_ok; /* The track is usable */
int b_enable; /* is the trak enable by default */
bool b_selected; /* is the trak being played */
bool b_chapter; /* True when used for chapter only */
bool b_mac_encoding;
es_format_t fmt;
es_out_id_t *p_es;
/* display size only ! */
int i_width;
int i_height;
float f_rotation;
/* more internal data */
uint64_t i_timescale; /* time scale for this track only */
/* elst */
int i_elst; /* current elst */
int64_t i_elst_time; /* current elst start time (in movie time scale)*/
MP4_Box_t *p_elst; /* elst (could be NULL) */
/* give the next sample to read, i_chunk is to find quickly where
the sample is located */
uint32_t i_sample; /* next sample to read */
uint32_t i_chunk; /* chunk where next sample is stored */
/* total count of chunk and sample */
uint32_t i_chunk_count;
uint32_t i_sample_count;
mp4_chunk_t *chunk; /* always defined for each chunk */
/* sample size, p_sample_size defined only if i_sample_size == 0
else i_sample_size is size for all sample */
uint32_t i_sample_size;
uint32_t *p_sample_size; /* XXX perhaps add file offset if take
too much time to do sumations each time*/
MP4_Box_t *p_stbl; /* will contain all timing information */
MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
MP4_Box_t *p_sample;/* point on actual sdsd */
MP4_Box_t *p_skcr;
} mp4_track_t;
struct demux_sys_t
{
MP4_Box_t *p_root; /* container for the whole file */
mtime_t i_pcr;
uint64_t i_time; /* time position of the presentation
* in movie timescale */
uint64_t i_timescale; /* movie time scale */
uint64_t i_duration; /* movie duration */
unsigned int i_tracks; /* number of tracks */
mp4_track_t *track; /* array of track */
float f_fps; /* number of frame per seconds */
/* */
MP4_Box_t *p_tref_chap;
/* */
input_title_t *p_title;
};
/*****************************************************************************
* Declaration of local function
*****************************************************************************/
static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *, bool b_force_enable );
static void MP4_TrackDestroy( mp4_track_t * );
static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
static uint64_t MP4_TrackGetPos ( mp4_track_t * );
static int MP4_TrackSampleSize( mp4_track_t * );
static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
static void MP4_UpdateSeekpoint( demux_t * );
static const char *MP4_ConvertMacCode( uint16_t );
/* Return time in s of a track */
static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
{
#define chunk p_track->chunk[p_track->i_chunk]
unsigned int i_index = 0;
unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
int64_t i_dts = chunk.i_first_dts;
while( i_sample > 0 )
{
if( i_sample > chunk.p_sample_count_dts[i_index] )
{
i_dts += chunk.p_sample_count_dts[i_index] *
chunk.p_sample_delta_dts[i_index];
i_sample -= chunk.p_sample_count_dts[i_index];
i_index++;
}
else
{
i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
break;
}
}
#undef chunk
/* now handle elst */
if( p_track->p_elst )
{
demux_sys_t *p_sys = p_demux->p_sys;
MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
/* convert to offset */
if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
elst->i_media_time[p_track->i_elst] > 0 )
{
i_dts -= elst->i_media_time[p_track->i_elst];
}
/* add i_elst_time */
i_dts += p_track->i_elst_time * p_track->i_timescale /
p_sys->i_timescale;
if( i_dts < 0 ) i_dts = 0;
}
return INT64_C(1000000) * i_dts / p_track->i_timescale;
}
static inline int64_t MP4_TrackGetPTSDelta( mp4_track_t *p_track )
{
mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
unsigned int i_index = 0;
unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
return -1;
for( i_index = 0;; i_index++ )
{
if( i_sample < ck->p_sample_count_pts[i_index] )
return ck->p_sample_offset_pts[i_index] * INT64_C(1000000) /
(int64_t)p_track->i_timescale;
i_sample -= ck->p_sample_count_pts[i_index];
}
}
static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
{
return INT64_C(1000000) * p_sys->i_time / p_sys->i_timescale;
}
static void LoadChapter( demux_t *p_demux );
/*****************************************************************************
* Open: check file and initializes MP4 structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t *)p_this;
demux_sys_t *p_sys;
const uint8_t *p_peek;
MP4_Box_t *p_ftyp;
MP4_Box_t *p_rmra;
MP4_Box_t *p_mvhd;
MP4_Box_t *p_trak;
unsigned int i;
bool b_seekable;
bool b_enabled_es;
/* A little test to see if it could be a mp4 */
if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
{
case ATOM_ftyp:
case ATOM_moov:
case ATOM_foov:
case ATOM_moof:
case ATOM_mdat:
case ATOM_udta:
case ATOM_free:
case ATOM_skip:
case ATOM_wide:
case VLC_FOURCC( 'p', 'n', 'o', 't' ):
break;
default:
return VLC_EGENERIC;
}
/* I need to seek */
stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &b_seekable );
if( !b_seekable )
{
msg_Warn( p_demux, "MP4 plugin discarded (not fastseekable)" );
return VLC_EGENERIC;
}
/*Set exported functions */
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
/* create our structure that will contains all data */
p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
/* Now load all boxes ( except raw data ) */
if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
{
msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
goto error;
}
MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
{
switch( p_ftyp->data.p_ftyp->i_major_brand )
{
case( ATOM_isom ):
msg_Dbg( p_demux,
"ISO Media file (isom) version %d.",
p_ftyp->data.p_ftyp->i_minor_version );
break;
case( ATOM_3gp4 ):
case( VLC_FOURCC( '3', 'g', 'p', '5' ) ):
case( VLC_FOURCC( '3', 'g', 'p', '6' ) ):
case( VLC_FOURCC( '3', 'g', 'p', '7' ) ):
msg_Dbg( p_demux, "3GPP Media file Release: %c",
#ifdef WORDS_BIGENDIAN
p_ftyp->data.p_ftyp->i_major_brand
#else
p_ftyp->data.p_ftyp->i_major_brand >> 24
#endif
);
break;
case( VLC_FOURCC( 'q', 't', ' ', ' ') ):
msg_Dbg( p_demux, "Apple QuickTime file" );
break;
case( VLC_FOURCC( 'i', 's', 'm', 'l') ):
msg_Dbg( p_demux, "PIFF (= isml = fMP4) file" );
break;
default:
msg_Dbg( p_demux,
"unrecognized major file specification (%4.4s).",
(char*)&p_ftyp->data.p_ftyp->i_major_brand );
break;
}
}
else
{
msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
}
/* the file need to have one moov box */
if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
{
MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
if( !p_foov )
{
/* search also for moof box used by smoothstreaming */
p_foov = MP4_BoxGet( p_sys->p_root, "/moof" );
if( !p_foov )
{
msg_Err( p_demux, "MP4 plugin discarded (no moov,foov,moof box)" );
goto error;
}
}
/* we have a free box as a moov, rename it */
p_foov->i_type = ATOM_moov;
}
if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
{
int i_count = MP4_BoxCount( p_rmra, "rmda" );
int i;
msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
input_thread_t *p_input = demux_GetParentInput( p_demux );
input_item_t *p_current = input_GetItem( p_input );
input_item_node_t *p_subitems = input_item_node_Create( p_current );
for( i = 0; i < i_count; i++ )
{
MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
char *psz_ref;
uint32_t i_ref_type;
if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
{
continue;
}
i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
psz_ref, (char*)&i_ref_type );
if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
{
if( strstr( psz_ref, "qt5gateQT" ) )
{
msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
continue;
}
if( !strncmp( psz_ref, "http://", 7 ) ||
!strncmp( psz_ref, "rtsp://", 7 ) )
{
;
}
else
{
char *psz_absolute;
char *psz_path = strdup( p_demux->psz_location );
char *end = strrchr( psz_path, '/' );
if( end ) end[1] = '\0';
else *psz_path = '\0';
if( asprintf( &psz_absolute, "%s://%s%s",
p_demux->psz_access, psz_path, psz_ref ) < 0 )
{
free( psz_ref );
free( psz_path );
vlc_object_release( p_input) ;
return VLC_ENOMEM;
}
free( psz_ref );
psz_ref = psz_absolute;
free( psz_path );
}
msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
input_item_t *p_item = input_item_New( psz_ref, NULL );
input_item_CopyOptions( p_current, p_item );
input_item_node_AppendItem( p_subitems, p_item );
vlc_gc_decref( p_item );
}
else
{
msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
(char*)&p_rdrf->data.p_rdrf->i_ref_type );
}
free( psz_ref );
}
input_item_node_PostAndDelete( p_subitems );
vlc_object_release( p_input );
}
if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
{
if( !p_rmra )
{
msg_Err( p_demux, "cannot find /moov/mvhd" );
goto error;
}
else
{
msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
p_demux->pf_demux = DemuxRef;
return VLC_SUCCESS;
}
}
else
{
p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
if( p_sys->i_timescale == 0 )
{
msg_Err( p_this, "bad timescale" );
goto error;
}
p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
}
if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
{
msg_Err( p_demux, "cannot find any /moov/trak" );
goto error;
}
msg_Dbg( p_demux, "found %d track%c",
p_sys->i_tracks,
p_sys->i_tracks ? 's':' ' );
/* allocate memory */
p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
if( p_sys->track == NULL )
goto error;
/* Search the first chap reference (like quicktime) and
* check that at least 1 stream is enabled */
p_sys->p_tref_chap = NULL;
b_enabled_es = false;
for( i = 0; i < p_sys->i_tracks; i++ )
{
MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
if( p_tkhd && (p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED) )
b_enabled_es = true;
MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
if( p_chap && p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
p_sys->p_tref_chap = p_chap;
}
/* now process each track and extract all useful information */
for( i = 0; i < p_sys->i_tracks; i++ )
{
p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
{
const char *psz_cat;
switch( p_sys->track[i].fmt.i_cat )
{
case( VIDEO_ES ):
psz_cat = "video";
break;
case( AUDIO_ES ):
psz_cat = "audio";
break;
case( SPU_ES ):
psz_cat = "subtitle";
break;
default:
psz_cat = "unknown";
break;
}
msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
p_sys->track[i].i_track_ID, psz_cat,
p_sys->track[i].b_enable ? "enable":"disable",
p_sys->track[i].fmt.psz_language ?
p_sys->track[i].fmt.psz_language : "undef" );
}
else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
{
msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
p_sys->track[i].i_track_ID,
p_sys->track[i].fmt.psz_language ?
p_sys->track[i].fmt.psz_language : "undef" );
}
else
{
msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
p_sys->track[i].i_track_ID );
}
}
/* */
LoadChapter( p_demux );
return VLC_SUCCESS;
error:
if( p_sys->p_root )
{
MP4_BoxFree( p_demux->s, p_sys->p_root );
}
free( p_sys );
return VLC_EGENERIC;
}
/*****************************************************************************
* Demux: read packet and send them to decoders
*****************************************************************************
* TODO check for newly selected track (ie audio upt to now )
*****************************************************************************/
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
unsigned int i_track;
unsigned int i_track_selected;
/* check for newly selected/unselected track */
for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
i_track++ )
{
mp4_track_t *tk = &p_sys->track[i_track];
bool b;
if( !tk->b_ok || tk->b_chapter ||
( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
{
continue;
}
es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
if( tk->b_selected && !b )
{
MP4_TrackUnselect( p_demux, tk );
}
else if( !tk->b_selected && b)
{
MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
}
if( tk->b_selected )
{
i_track_selected++;
}
}
if( i_track_selected <= 0 )
{
p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
if( p_sys->i_timescale > 0 )
{
int64_t i_length = (mtime_t)1000000 *
(mtime_t)p_sys->i_duration /
(mtime_t)p_sys->i_timescale;
if( MP4_GetMoviePTS( p_sys ) >= i_length )
return 0;
return 1;
}
msg_Warn( p_demux, "no track selected, exiting..." );
return 0;
}
/* */
MP4_UpdateSeekpoint( p_demux );
/* first wait for the good time to read a packet */
es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
/* we will read 100ms for each stream so ...*/
p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
{
mp4_track_t *tk = &p_sys->track[i_track];
if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
continue;
while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
{
#if 0
msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
MP4_TrackGetDTS( p_demux, tk ),
MP4_GetMoviePTS( p_sys ) );
#endif
if( MP4_TrackSampleSize( tk ) > 0 )
{
block_t *p_block;
int64_t i_delta;
/* go,go go ! */
if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
{
msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
tk->i_track_ID );
MP4_TrackUnselect( p_demux, tk );
break;
}
/* now read pes */
if( !(p_block =
stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
{
msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
tk->i_track_ID );
MP4_TrackUnselect( p_demux, tk );
break;
}
else if( tk->fmt.i_cat == SPU_ES )
{
if( tk->fmt.i_codec == VLC_CODEC_SUBT &&
p_block->i_buffer >= 2 )
{
size_t i_size = GetWBE( p_block->p_buffer );
if( i_size + 2 <= p_block->i_buffer )
{
char *p;
/* remove the length field, and append a '\0' */
memmove( &p_block->p_buffer[0],
&p_block->p_buffer[2], i_size );
p_block->p_buffer[i_size] = '\0';
p_block->i_buffer = i_size + 1;
/* convert \r -> \n */
while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
{
*p = '\n';
}
}
else
{
/* Invalid */
p_block->i_buffer = 0;
}
}
}
/* dts */
p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
/* pts */
i_delta = MP4_TrackGetPTSDelta( tk );
if( i_delta != -1 )
p_block->i_pts = p_block->i_dts + i_delta;
else if( tk->fmt.i_cat != VIDEO_ES )
p_block->i_pts = p_block->i_dts;
else
p_block->i_pts = VLC_TS_INVALID;
es_out_Send( p_demux->out, tk->p_es, p_block );
}
/* Next sample */
if( MP4_TrackNextSample( p_demux, tk ) )
break;
}
}
return 1;
}
static void MP4_UpdateSeekpoint( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
int64_t i_time;
int i;
if( !p_sys->p_title )
return;
i_time = MP4_GetMoviePTS( p_sys );
for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
{
if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
break;
}
i--;
if( i != p_demux->info.i_seekpoint && i >= 0 )
{
p_demux->info.i_seekpoint = i;
p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
}
}
/*****************************************************************************
* Seek: Go to i_date
******************************************************************************/
static int Seek( demux_t *p_demux, mtime_t i_date )
{
demux_sys_t *p_sys = p_demux->p_sys;
unsigned int i_track;
/* First update update global time */
p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
p_sys->i_pcr = i_date;
/* Now for each stream try to go to this time */
for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
{
mp4_track_t *tk = &p_sys->track[i_track];
MP4_TrackSeek( p_demux, tk, i_date );
}
MP4_UpdateSeekpoint( p_demux );
es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
return VLC_SUCCESS;
}
/*****************************************************************************
* 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;
int64_t i64, *pi64;
switch( i_query )
{
case DEMUX_GET_POSITION:
pf = (double*)va_arg( args, double * );
if( p_sys->i_duration > 0 )
{
*pf = (double)p_sys->i_time / (double)p_sys->i_duration;
}
else
{
*pf = 0.0;
}
return VLC_SUCCESS;
case DEMUX_SET_POSITION:
f = (double)va_arg( args, double );
if( p_sys->i_timescale > 0 )
{
i64 = (int64_t)( f * (double)1000000 *
(double)p_sys->i_duration /
(double)p_sys->i_timescale );
return Seek( p_demux, i64 );
}
else return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
if( p_sys->i_timescale > 0 )
{
*pi64 = (mtime_t)1000000 *
(mtime_t)p_sys->i_time /
(mtime_t)p_sys->i_timescale;
}
else *pi64 = 0;
return VLC_SUCCESS;
case DEMUX_SET_TIME:
i64 = (int64_t)va_arg( args, int64_t );
return Seek( p_demux, i64 );
case DEMUX_GET_LENGTH:
pi64 = (int64_t*)va_arg( args, int64_t * );
if( p_sys->i_timescale > 0 )
{
*pi64 = (mtime_t)1000000 *
(mtime_t)p_sys->i_duration /
(mtime_t)p_sys->i_timescale;
}
else *pi64 = 0;
return VLC_SUCCESS;
case DEMUX_GET_FPS:
pf = (double*)va_arg( args, double* );
*pf = p_sys->f_fps;
return VLC_SUCCESS;
case DEMUX_GET_META:
{
vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
MP4_Box_t *p_0xa9xxx;
MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
if( p_udta == NULL )
{
p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
if( p_udta == NULL )
{
return VLC_EGENERIC;
}
}
for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
p_0xa9xxx = p_0xa9xxx->p_next )
{
if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
continue;
/* FIXME FIXME: should convert from whatever the character
* encoding of MP4 meta data is to UTF-8. */
#define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
if( psz_utf ) { EnsureUTF8( psz_utf ); \
fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
/* XXX Becarefull p_udta can have box that are not 0xa9xx */
switch( p_0xa9xxx->i_type )
{
case ATOM_0xa9nam: /* Full name */
SET( vlc_meta_SetTitle );
break;
case ATOM_0xa9aut:
SET( vlc_meta_SetArtist );
break;
case ATOM_0xa9ART:
SET( vlc_meta_SetArtist );
break;
case ATOM_0xa9cpy:
SET( vlc_meta_SetCopyright );
break;
case ATOM_0xa9day: /* Creation Date */
SET( vlc_meta_SetDate );
break;
case ATOM_0xa9des: /* Description */
SET( vlc_meta_SetDescription );
break;
case ATOM_0xa9gen: /* Genre */
SET( vlc_meta_SetGenre );
break;
case ATOM_gnre:
if( p_0xa9xxx->data.p_gnre->i_genre <= NUM_GENRES )
vlc_meta_SetGenre( p_meta, ppsz_genres[p_0xa9xxx->data.p_gnre->i_genre - 1] );
break;
case ATOM_0xa9alb: /* Album */
SET( vlc_meta_SetAlbum );
break;
case ATOM_0xa9trk: /* Track */
SET( vlc_meta_SetTrackNum );
break;
case ATOM_trkn:
{
char psz_trck[11];
snprintf( psz_trck, sizeof( psz_trck ), "%i",
p_0xa9xxx->data.p_trkn->i_track_number );
vlc_meta_SetTrackNum( p_meta, psz_trck );
break;
}
case ATOM_0xa9cmt: /* Commment */
SET( vlc_meta_SetDescription );
break;
case ATOM_0xa9url: /* URL */
SET( vlc_meta_SetURL );
break;
case ATOM_0xa9too: /* Encoder Tool */
case ATOM_0xa9enc: /* Encoded By */
SET( vlc_meta_SetEncodedBy );
break;
default:
break;
}
#undef SET
static const struct { uint32_t xa9_type; char metadata[25]; } xa9typetoextrameta[] =
{
{ ATOM_0xa9wrt, N_("Writer") },
{ ATOM_0xa9com, N_("Composer") },
{ ATOM_0xa9prd, N_("Producer") },
{ ATOM_0xa9inf, N_("Information") },
{ ATOM_0xa9dir, N_("Director") },
{ ATOM_0xa9dis, N_("Disclaimer") },
{ ATOM_0xa9req, N_("Requirements") },
{ ATOM_0xa9fmt, N_("Original Format") },
{ ATOM_0xa9dsa, N_("Display Source As") },
{ ATOM_0xa9hst, N_("Host Computer") },
{ ATOM_0xa9prf, N_("Performers") },
{ ATOM_0xa9ope, N_("Original Performer") },
{ ATOM_0xa9src, N_("Providers Source Content") },
{ ATOM_0xa9wrn, N_("Warning") },
{ ATOM_0xa9swr, N_("Software") },
{ ATOM_0xa9lyr, N_("Lyrics") },
{ ATOM_0xa9mak, N_("Make") },
{ ATOM_0xa9mod, N_("Model") },
{ ATOM_0xa9PRD, N_("Product") },
{ ATOM_0xa9grp, N_("Grouping") },
{ 0, "" },
};
for( unsigned i = 0; xa9typetoextrameta[i].xa9_type; i++ )
{
if( p_0xa9xxx->i_type == xa9typetoextrameta[i].xa9_type )
{
char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" );
if( psz_utf )
{
EnsureUTF8( psz_utf );
vlc_meta_AddExtra( p_meta, _(xa9typetoextrameta[i].metadata), psz_utf );
free( psz_utf );
}
break;
}
}
}
return VLC_SUCCESS;
}
case DEMUX_GET_TITLE_INFO:
{
input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
int *pi_int = (int*)va_arg( args, int* );
int *pi_title_offset = (int*)va_arg( args, int* );
int *pi_seekpoint_offset = (int*)va_arg( args, int* );
if( !p_sys->p_title )
return VLC_EGENERIC;
*pi_int = 1;
*ppp_title = malloc( sizeof( input_title_t**) );
(*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
*pi_title_offset = 0;
*pi_seekpoint_offset = 0;
return VLC_SUCCESS;
}
case DEMUX_SET_TITLE:
{
const int i_title = (int)va_arg( args, int );
if( !p_sys->p_title || i_title != 0 )
return VLC_EGENERIC;
return VLC_SUCCESS;
}
case DEMUX_SET_SEEKPOINT:
{
const int i_seekpoint = (int)va_arg( args, int );
if( !p_sys->p_title )
return VLC_EGENERIC;
return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
}
case DEMUX_SET_NEXT_DEMUX_TIME:
case DEMUX_SET_GROUP:
case DEMUX_HAS_UNSUPPORTED_META:
case DEMUX_GET_ATTACHMENTS:
case DEMUX_GET_PTS_DELAY:
case DEMUX_CAN_RECORD:
return VLC_EGENERIC;
default:
msg_Warn( p_demux, "control query %u unimplemented", i_query );
return VLC_EGENERIC;
}
}
/*****************************************************************************
* Close: frees unused data
*****************************************************************************/
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;
unsigned int i_track;
msg_Dbg( p_demux, "freeing all memory" );
MP4_BoxFree( p_demux->s, p_sys->p_root );
for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
{
MP4_TrackDestroy( &p_sys->track[i_track] );
}
FREENULL( p_sys->track );
if( p_sys->p_title )
vlc_input_title_Delete( p_sys->p_title );
free( p_sys );
}
/****************************************************************************
* Local functions, specific to vlc
****************************************************************************/
/* Chapters */
static void LoadChapterGpac( demux_t *p_demux, MP4_Box_t *p_chpl )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i;
p_sys->p_title = vlc_input_title_New();
for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
{
seekpoint_t *s = vlc_seekpoint_New();
s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
EnsureUTF8( s->psz_name );
s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
}
}
static void LoadChapterApple( demux_t *p_demux, mp4_track_t *tk )
{
demux_sys_t *p_sys = p_demux->p_sys;
for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
{
const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
const int64_t i_pts_delta = MP4_TrackGetPTSDelta( tk );
const unsigned int i_size = MP4_TrackSampleSize( tk );
if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
{
char p_buffer[256];
const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
if( i_len > 0 )
{
seekpoint_t *s = vlc_seekpoint_New();
s->psz_name = strndup( &p_buffer[2], i_len );
EnsureUTF8( s->psz_name );
s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
if( !p_sys->p_title )
p_sys->p_title = vlc_input_title_New();
TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
}
}
if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
tk->chunk[tk->i_chunk].i_sample_count )
tk->i_chunk++;
}
}
static void LoadChapter( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
MP4_Box_t *p_chpl;
if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
{
LoadChapterGpac( p_demux, p_chpl );
}
else if( p_sys->p_tref_chap )
{
MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
unsigned int i, j;
/* Load the first subtitle track like quicktime */
for( i = 0; i < p_chap->i_entry_count; i++ )
{
for( j = 0; j < p_sys->i_tracks; j++ )
{
mp4_track_t *tk = &p_sys->track[j];
if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_CODEC_SUBT )
break;
}
if( j < p_sys->i_tracks )
{
LoadChapterApple( p_demux, &p_sys->track[j] );
break;
}
}
}
/* Add duration if titles are enabled */
if( p_sys->p_title )
{
p_sys->p_title->i_length = (uint64_t)1000000 *
(uint64_t)p_sys->i_duration / (uint64_t)p_sys->i_timescale;
}
}
/* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
static int TrackCreateChunksIndex( demux_t *p_demux,
mp4_track_t *p_demux_track )
{
MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
MP4_Box_t *p_stsc;
unsigned int i_chunk;
unsigned int i_index, i_last;
if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
!(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
{
return( VLC_EGENERIC );
}
p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
if( !p_demux_track->i_chunk_count )
{
msg_Warn( p_demux, "no chunk defined" );
return( VLC_EGENERIC );
}
p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
sizeof( mp4_chunk_t ) );
if( p_demux_track->chunk == NULL )
{
return VLC_ENOMEM;
}
/* first we read chunk offset */
for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
{
mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
ck->i_first_dts = 0;
ck->p_sample_count_dts = NULL;
ck->p_sample_delta_dts = NULL;
ck->p_sample_count_pts = NULL;
ck->p_sample_offset_pts = NULL;
}
/* now we read index for SampleEntry( soun vide mp4a mp4v ...)
to be used for the sample XXX begin to 1
We construct it begining at the end */
i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
i_index = p_stsc->data.p_stsc->i_entry_count;
if( !i_index )
{
msg_Warn( p_demux, "cannot read chunk table or table empty" );
return( VLC_EGENERIC );
}
while( i_index-- )
{
for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
i_chunk < i_last; i_chunk++ )
{
if( i_chunk >= p_demux_track->i_chunk_count )
{
msg_Warn( p_demux, "corrupted chunk table" );
return VLC_EGENERIC;
}
p_demux_track->chunk[i_chunk].i_sample_description_index =
p_stsc->data.p_stsc->i_sample_description_index[i_index];
p_demux_track->chunk[i_chunk].i_sample_count =
p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
}
i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
}
p_demux_track->chunk[0].i_sample_first = 0;
for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
{
p_demux_track->chunk[i_chunk].i_sample_first =
p_demux_track->chunk[i_chunk-1].i_sample_first +
p_demux_track->chunk[i_chunk-1].i_sample_count;
}
msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
return VLC_SUCCESS;
}
static int TrackCreateSamplesIndex( demux_t *p_demux,
mp4_track_t *p_demux_track )
{
MP4_Box_t *p_box;
MP4_Box_data_stsz_t *stsz;
MP4_Box_data_stts_t *stts;
/* TODO use also stss and stsh table for seeking */
/* FIXME use edit table */
int64_t i_sample;
int64_t i_chunk;
int64_t i_index;
int64_t i_index_sample_used;
int64_t i_next_dts;
/* Find stsz
* Gives the sample size for each samples. There is also a stz2 table
* (compressed form) that we need to implement TODO */
p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
if( !p_box )
{
/* FIXME and stz2 */
msg_Warn( p_demux, "cannot find STSZ box" );
return VLC_EGENERIC;
}
stsz = p_box->data.p_stsz;
/* Find stts
* Gives mapping between sample and decoding time
*/
p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
if( !p_box )
{
msg_Warn( p_demux, "cannot find STTS box" );
return VLC_EGENERIC;
}
stts = p_box->data.p_stts;
/* Use stsz table to create a sample number -> sample size table */
p_demux_track->i_sample_count = stsz->i_sample_count;
if( stsz->i_sample_size )
{
/* 1: all sample have the same size, so no need to construct a table */
p_demux_track->i_sample_size = stsz->i_sample_size;
p_demux_track->p_sample_size = NULL;
}
else
{
/* 2: each sample can have a different size */
p_demux_track->i_sample_size = 0;
p_demux_track->p_sample_size =
calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
if( p_demux_track->p_sample_size == NULL )
return VLC_ENOMEM;
for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
{
p_demux_track->p_sample_size[i_sample] =
stsz->i_entry_size[i_sample];
}
}
/* Use stts table to create a sample number -> dts table.
* XXX: if we don't want to waste too much memory, we can't expand
* the box! so each chunk will contain an "extract" of this table
* for fast research (problem with raw stream where a sample is sometime
* just channels*bits_per_sample/8 */
i_next_dts = 0;
i_index = 0; i_index_sample_used = 0;
for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
{
mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
int64_t i_entry, i_sample_count, i;
/* save first dts */
ck->i_first_dts = i_next_dts;
ck->i_last_dts = i_next_dts;
/* count how many entries are needed for this chunk
* for p_sample_delta_dts and p_sample_count_dts */
i_sample_count = ck->i_sample_count;
i_entry = 0;
while( i_sample_count > 0 )
{
i_sample_count -= stts->i_sample_count[i_index+i_entry];
/* don't count already used sample in this entry */
if( i_entry == 0 )
i_sample_count += i_index_sample_used;
i_entry++;
}
/* allocate them */
ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
return VLC_ENOMEM;
/* now copy */
i_sample_count = ck->i_sample_count;
for( i = 0; i < i_entry; i++ )
{
int64_t i_used;
int64_t i_rest;
i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
i_used = __MIN( i_rest, i_sample_count );
i_index_sample_used += i_used;
i_sample_count -= i_used;
i_next_dts += i_used * stts->i_sample_delta[i_index];
ck->p_sample_count_dts[i] = i_used;
ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
if( i_used > 0 )
ck->i_last_dts = i_next_dts - ck->p_sample_delta_dts[i];
if( i_index_sample_used >= stts->i_sample_count[i_index] )
{
i_index++;
i_index_sample_used = 0;
}
}
}
/* Find ctts
* Gives the delta between decoding time (dts) and composition table (pts)
*/
p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
if( p_box )
{
MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
msg_Warn( p_demux, "CTTS table" );
/* Create pts-dts table per chunk */
i_index = 0; i_index_sample_used = 0;
for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
{
mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
int64_t i_entry, i_sample_count, i;
/* count how many entries are needed for this chunk
* for p_sample_delta_dts and p_sample_count_dts */
i_sample_count = ck->i_sample_count;
i_entry = 0;
while( i_sample_count > 0 )
{
i_sample_count -= ctts->i_sample_count[i_index+i_entry];
/* don't count already used sample in this entry */
if( i_entry == 0 )
i_sample_count += i_index_sample_used;
i_entry++;
}
/* allocate them */
ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
return VLC_ENOMEM;
/* now copy */
i_sample_count = ck->i_sample_count;
for( i = 0; i < i_entry; i++ )
{
int64_t i_used;
int64_t i_rest;
i_rest = ctts->i_sample_count[i_index] -
i_index_sample_used;
i_used = __MIN( i_rest, i_sample_count );
i_index_sample_used += i_used;
i_sample_count -= i_used;
ck->p_sample_count_pts[i] = i_used;
ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
if( i_index_sample_used >= ctts->i_sample_count[i_index] )
{
i_index++;
i_index_sample_used = 0;
}
}
}
}
msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
p_demux_track->i_track_ID, p_demux_track->i_sample_count,
i_next_dts / p_demux_track->i_timescale );
return VLC_SUCCESS;
}
/**
* It computes the sample rate for a video track using the given sample
* description index
*/
static void TrackGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
const mp4_track_t *p_track,
unsigned i_sd_index,
unsigned i_chunk )
{
*pi_num = 0;
*pi_den = 0;
if( p_track->i_chunk_count <= 0 )
return;
/* */
const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
while( p_chunk > &p_track->chunk[0] &&
p_chunk[-1].i_sample_description_index == i_sd_index )
{
p_chunk--;
}
uint64_t i_sample = 0;
uint64_t i_first_dts = p_chunk->i_first_dts;
uint64_t i_last_dts;
do
{
i_sample += p_chunk->i_sample_count;
i_last_dts = p_chunk->i_last_dts;
p_chunk++;
}
while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
p_chunk->i_sample_description_index == i_sd_index );
if( i_sample > 1 && i_first_dts < i_last_dts )
vlc_ureduce( pi_num, pi_den,
( i_sample - 1) * p_track->i_timescale,
i_last_dts - i_first_dts,
UINT16_MAX);
}
/*
* TrackCreateES:
* Create ES and PES to init decoder if needed, for a track starting at i_chunk
*/
static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
unsigned int i_chunk, es_out_id_t **pp_es )
{
const unsigned i_sample_description_index =
p_track->chunk[i_chunk].i_sample_description_index;
MP4_Box_t *p_sample;
MP4_Box_t *p_esds;
MP4_Box_t *p_frma;
MP4_Box_t *p_enda;
MP4_Box_t *p_pasp;
if( pp_es )
*pp_es = NULL;
if( !i_sample_description_index )
{
msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
p_track->i_track_ID );
return VLC_EGENERIC;
}
p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
i_sample_description_index - 1 );
if( !p_sample ||
( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
{
msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
p_track->i_track_ID );
return VLC_EGENERIC;
}
p_track->p_sample = p_sample;
if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) )
{
msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
p_sample->i_type = p_frma->data.p_frma->i_type;
}
p_enda = MP4_BoxGet( p_sample, "wave/enda" );
if( !p_enda )
p_enda = MP4_BoxGet( p_sample, "enda" );
p_pasp = MP4_BoxGet( p_sample, "pasp" );
/* */
switch( p_track->fmt.i_cat )
{
case VIDEO_ES:
p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
p_track->fmt.video.i_bits_per_pixel =
p_sample->data.p_sample_vide->i_depth;
/* fall on display size */
if( p_track->fmt.video.i_width <= 0 )
p_track->fmt.video.i_width = p_track->i_width;
if( p_track->fmt.video.i_height <= 0 )
p_track->fmt.video.i_height = p_track->i_height;
/* Find out apect ratio from display size */
if( p_track->i_width > 0 && p_track->i_height > 0 &&
/* Work-around buggy muxed files */
p_sample->data.p_sample_vide->i_width != p_track->i_width )
{
p_track->fmt.video.i_sar_num = p_track->i_width * p_track->fmt.video.i_height;
p_track->fmt.video.i_sar_den = p_track->i_height * p_track->fmt.video.i_width;
}
if( p_pasp && p_pasp->data.p_pasp->i_horizontal_spacing > 0 &&
p_pasp->data.p_pasp->i_vertical_spacing > 0 )
{
p_track->fmt.video.i_sar_num = p_pasp->data.p_pasp->i_horizontal_spacing;
p_track->fmt.video.i_sar_den = p_pasp->data.p_pasp->i_vertical_spacing;
}
/* Support for cropping (eg. in H263 files) */
p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
/* Frame rate */
TrackGetESSampleRate( &p_track->fmt.video.i_frame_rate,
&p_track->fmt.video.i_frame_rate_base,
p_track, i_sample_description_index, i_chunk );
p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
(float)p_track->fmt.video.i_frame_rate_base;
/* Rotation */
switch( (int)p_track->f_rotation ) {
case 90:
p_track->fmt.video.orientation = ORIENT_ROTATED_90;
break;
case 180:
p_track->fmt.video.orientation = ORIENT_ROTATED_180;
break;
case 270:
p_track->fmt.video.orientation = ORIENT_ROTATED_270;
break;
}
break;
case AUDIO_ES:
p_track->fmt.audio.i_channels =
p_sample->data.p_sample_soun->i_channelcount;
p_track->fmt.audio.i_rate =
p_sample->data.p_sample_soun->i_sampleratehi;
p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
p_sample->data.p_sample_soun->i_sampleratehi *
p_sample->data.p_sample_soun->i_samplesize;
p_track->fmt.audio.i_bitspersample =
p_sample->data.p_sample_soun->i_samplesize;
if( ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
{
MP4_Box_data_sample_soun_t *p_soun;
p_soun = p_sample->data.p_sample_soun;
if( p_soun->i_qt_version == 0 )
{
switch( p_sample->i_type )
{
case VLC_FOURCC( 'i', 'm', 'a', '4' ):
p_soun->i_qt_version = 1;
p_soun->i_sample_per_packet = 64;
p_soun->i_bytes_per_packet = 34;
p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
p_soun->i_bytes_per_sample = 2;
break;
case VLC_FOURCC( 'M', 'A', 'C', '3' ):
p_soun->i_qt_version = 1;
p_soun->i_sample_per_packet = 6;
p_soun->i_bytes_per_packet = 2;
p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
p_soun->i_bytes_per_sample = 2;
break;
case VLC_FOURCC( 'M', 'A', 'C', '6' ):
p_soun->i_qt_version = 1;
p_soun->i_sample_per_packet = 12;
p_soun->i_bytes_per_packet = 2;
p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
p_soun->i_bytes_per_sample = 2;
break;
case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
p_soun->i_samplesize = 8;
p_track->i_sample_size = p_soun->i_channelcount;
break;
case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
case VLC_FOURCC( 't', 'w', 'o', 's' ):
case VLC_FOURCC( 's', 'o', 'w', 't' ):
/* What would be the fun if you could trust the .mov */
p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
break;
default:
break;
}
}
else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
{
p_soun->i_qt_version = 0;
}
}
else if( p_sample->data.p_sample_soun->i_qt_version == 1 )
{
MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
switch( p_sample->i_type )
{
case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
{
if( p_track->i_sample_size > 1 )
p_soun->i_qt_version = 0;
break;
}
case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
case( VLC_FOURCC( 'm', 's', 0x20, 0x00 ) ):
p_soun->i_qt_version = 0;
break;
default:
break;
}
}
if( p_track->i_sample_size != 0 &&
p_sample->data.p_sample_soun->i_qt_version == 1 &&
p_sample->data.p_sample_soun->i_sample_per_packet <= 0 )
{
msg_Err( p_demux, "Invalid sample per packet value for qt_version 1" );
return VLC_EGENERIC;
}
break;
default:
break;
}
/* It's a little ugly but .. there are special cases */
switch( p_sample->i_type )
{
case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
{
p_track->fmt.i_codec = VLC_CODEC_MPGA;
break;
}
case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
{
MP4_Box_t *p_dac3_box = MP4_BoxGet( p_sample, "dac3", 0 );
p_track->fmt.i_codec = VLC_CODEC_A52;
if( p_dac3_box )
{
static const int pi_bitrate[] = {
32, 40, 48, 56,
64, 80, 96, 112,
128, 160, 192, 224,
256, 320, 384, 448,
512, 576, 640,
};
MP4_Box_data_dac3_t *p_dac3 = p_dac3_box->data.p_dac3;
p_track->fmt.audio.i_channels = 0;
p_track->fmt.i_bitrate = 0;
if( p_dac3->i_bitrate_code < sizeof(pi_bitrate)/sizeof(*pi_bitrate) )
p_track->fmt.i_bitrate = pi_bitrate[p_dac3->i_bitrate_code] * 1000;
p_track->fmt.audio.i_bitspersample = 0;
}
break;
}
case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
{
p_track->fmt.i_codec = VLC_CODEC_EAC3;
break;
}
case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
{
MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
if(p_soun && (p_soun->i_samplesize+7)/8 == 1 )
p_track->fmt.i_codec = VLC_FOURCC( 'u', '8', ' ', ' ' );
else
p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
/* Buggy files workaround */
if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
p_sample->data.p_sample_soun->i_sampleratehi) )
{
MP4_Box_data_sample_soun_t *p_soun =
p_sample->data.p_sample_soun;
msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
"(%u), making both equal (report any problem).",
p_track->i_timescale, p_soun->i_sampleratehi );
if( p_soun->i_sampleratehi )
p_track->i_timescale = p_soun->i_sampleratehi;
else
p_soun->i_sampleratehi = p_track->i_timescale;
}
break;
}
case( VLC_FOURCC( 's', '2', '6', '3' ) ):
p_track->fmt.i_codec = VLC_CODEC_H263;
break;
case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
p_track->fmt.i_codec = VLC_CODEC_SUBT;
/* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
/* FIXME UTF-8 doesn't work here ? */
if( p_track->b_mac_encoding )
p_track->fmt.subs.psz_encoding = strdup( "MAC" );
else
p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
break;
case VLC_FOURCC('y','v','1','2'):
p_track->fmt.i_codec = VLC_CODEC_YV12;
break;
case VLC_FOURCC('y','u','v','2'):
p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
break;
case VLC_FOURCC('i','n','2','4'):
p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
VLC_FOURCC('4','2','n','i') : VLC_FOURCC('i','n','2','4');
break;
case VLC_FOURCC('f','l','3','2'):
p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
VLC_CODEC_F32L : VLC_CODEC_F32B;
break;
case VLC_FOURCC('f','l','6','4'):
p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
VLC_CODEC_F64L : VLC_CODEC_F64B;
break;
case VLC_FOURCC( 'l', 'p', 'c', 'm' ):
{
MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
if( p_soun->i_qt_version == 2 &&
p_soun->i_qt_description > 20 + 28 )
{
/* Flags:
* 0x01: IsFloat
* 0x02: IsBigEndian
* 0x04: IsSigned
*/
static const struct {
unsigned i_flags;
unsigned i_mask;
unsigned i_bits;
vlc_fourcc_t i_codec;
} p_formats[] = {
{ 0x01, 0x03, 32, VLC_CODEC_F32L },
{ 0x01, 0x03, 64, VLC_CODEC_F64L },
{ 0x01|0x02, 0x03, 32, VLC_CODEC_F32B },
{ 0x01|0x02, 0x03, 64, VLC_CODEC_F64B },
{ 0x00, 0x05, 8, VLC_CODEC_U8 },
{ 0x00| 0x04, 0x05, 8, VLC_CODEC_S8 },
{ 0x00, 0x07, 16, VLC_CODEC_U16L },
{ 0x00|0x02, 0x07, 16, VLC_CODEC_U16B },
{ 0x00 |0x04, 0x07, 16, VLC_CODEC_S16L },
{ 0x00|0x02|0x04, 0x07, 16, VLC_CODEC_S16B },
{ 0x00, 0x07, 24, VLC_CODEC_U24L },
{ 0x00|0x02, 0x07, 24, VLC_CODEC_U24B },
{ 0x00 |0x04, 0x07, 24, VLC_CODEC_S24L },
{ 0x00|0x02|0x04, 0x07, 24, VLC_CODEC_S24B },
{ 0x00, 0x07, 32, VLC_CODEC_U32L },
{ 0x00|0x02, 0x07, 32, VLC_CODEC_U32B },
{ 0x00 |0x04, 0x07, 32, VLC_CODEC_S32L },
{ 0x00|0x02|0x04, 0x07, 32, VLC_CODEC_S32B },
{0, 0, 0, 0}
};
uint32_t i_bits = GetDWBE(&p_soun->p_qt_description[20 + 20]);
uint32_t i_flags = GetDWBE(&p_soun->p_qt_description[20 + 24]);
for( int i = 0; p_formats[i].i_codec; i++ )
{
if( p_formats[i].i_bits == i_bits &&
(i_flags & p_formats[i].i_mask) == p_formats[i].i_flags )
{
p_track->fmt.i_codec = p_formats[i].i_codec;
p_track->fmt.audio.i_bitspersample = i_bits;
p_track->fmt.audio.i_blockalign = p_soun->i_channelcount * i_bits / 8;
p_track->i_sample_size = p_track->fmt.audio.i_blockalign;
p_soun->i_qt_version = 0;
break;
}
}
}
break;
}
default:
p_track->fmt.i_codec = p_sample->i_type;
break;
}
/* now see if esds is present and if so create a data packet
with decoder_specific_info */
#define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
( p_esds->data.p_esds )&&
( p_decconfig ) )
{
/* First update information based on i_objectTypeIndication */
switch( p_decconfig->i_objectTypeIndication )
{
case( 0x20 ): /* MPEG4 VIDEO */
p_track->fmt.i_codec = VLC_CODEC_MP4V;
break;
case( 0x21 ): /* H.264 */
p_track->fmt.i_codec = VLC_CODEC_H264;
break;
case( 0x40):
p_track->fmt.i_codec = VLC_CODEC_MP4A;
if( p_decconfig->i_decoder_specific_info_len >= 2 &&
p_decconfig->p_decoder_specific_info[0] == 0xF8 &&
(p_decconfig->p_decoder_specific_info[1]&0xE0) == 0x80 )
{
p_track->fmt.i_codec = VLC_CODEC_ALS;
}
break;
case( 0x60):
case( 0x61):
case( 0x62):
case( 0x63):
case( 0x64):
case( 0x65): /* MPEG2 video */
p_track->fmt.i_codec = VLC_CODEC_MPGV;
break;
/* Theses are MPEG2-AAC */
case( 0x66): /* main profile */
case( 0x67): /* Low complexity profile */
case( 0x68): /* Scaleable Sampling rate profile */
p_track->fmt.i_codec = VLC_CODEC_MP4A;
break;
/* True MPEG 2 audio */
case( 0x69):
p_track->fmt.i_codec = VLC_CODEC_MPGA;
break;
case( 0x6a): /* MPEG1 video */
p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
break;
case( 0x6b): /* MPEG1 audio */
p_track->fmt.i_codec = VLC_CODEC_MPGA;
break;
case( 0x6c ): /* jpeg */
p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
break;
case( 0x6d ): /* png */
p_track->fmt.i_codec = VLC_FOURCC( 'p','n','g',' ' );
break;
case( 0x6e ): /* jpeg2000 */
p_track->fmt.i_codec = VLC_FOURCC( 'M','J','2','C' );
break;
case( 0xa3 ): /* vc1 */
p_track->fmt.i_codec = VLC_CODEC_VC1;
break;
case( 0xa4 ):
p_track->fmt.i_codec = VLC_CODEC_DIRAC;
break;
case( 0xa5 ):
p_track->fmt.i_codec = VLC_CODEC_A52;
break;
case( 0xa6 ):
p_track->fmt.i_codec = VLC_CODEC_EAC3;
break;
case( 0xa9 ): /* dts */
case( 0xaa ): /* DTS-HD HRA */
case( 0xab ): /* DTS-HD Master Audio */
p_track->fmt.i_codec = VLC_CODEC_DTS;
break;
case( 0xDD ):
p_track->fmt.i_codec = VLC_CODEC_VORBIS;
break;
/* Private ID */
case( 0xe0 ): /* NeroDigital: dvd subs */
if( p_track->fmt.i_cat == SPU_ES )
{
p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
if( p_track->i_width > 0 )
p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
if( p_track->i_height > 0 )
p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
break;
}
case( 0xe1 ): /* QCelp for 3gp */
if( p_track->fmt.i_cat == AUDIO_ES )
{
p_track->fmt.i_codec = VLC_FOURCC( 'Q','c','l','p' );
}
break;
/* Fallback */
default:
/* Unknown entry, but don't touch i_fourcc */
msg_Warn( p_demux,
"unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
p_decconfig->i_objectTypeIndication,
p_track->i_track_ID );
break;
}
p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
p_track->fmt.i_extra );
}
}
else
{
switch( p_sample->i_type )
{
/* qt decoder, send the complete chunk */
case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
break;
/* qt decoder, send the complete chunk */
case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
case VLC_FOURCC( 'V', 'P', '3', '1' ):
case VLC_FOURCC( '3', 'I', 'V', '1' ):
case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
p_track->fmt.i_extra =
p_sample->data.p_sample_vide->i_qt_image_description;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
memcpy( p_track->fmt.p_extra,
p_sample->data.p_sample_vide->p_qt_image_description,
p_track->fmt.i_extra);
}
break;
case VLC_CODEC_AMR_NB:
p_track->fmt.audio.i_rate = 8000;
case VLC_CODEC_AMR_WB:
p_track->fmt.audio.i_rate = 16000;
case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
case VLC_CODEC_QDM2:
case VLC_CODEC_ALAC:
p_track->fmt.i_extra =
p_sample->data.p_sample_soun->i_qt_description;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
memcpy( p_track->fmt.p_extra,
p_sample->data.p_sample_soun->p_qt_description,
p_track->fmt.i_extra);
}
if( p_track->fmt.i_extra >= 56 && p_sample->i_type == VLC_CODEC_ALAC )
{
p_track->fmt.audio.i_channels = *((uint8_t*)p_track->fmt.p_extra + 41);
p_track->fmt.audio.i_rate = GetDWBE((uint8_t*)p_track->fmt.p_extra + 52);
}
break;
case VLC_FOURCC( 'v', 'c', '-', '1' ):
{
MP4_Box_t *p_dvc1 = MP4_BoxGet( p_sample, "dvc1" );
if( p_dvc1 )
{
p_track->fmt.i_extra = p_dvc1->data.p_dvc1->i_vc1;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_dvc1->data.p_dvc1->i_vc1 );
memcpy( p_track->fmt.p_extra, p_dvc1->data.p_dvc1->p_vc1,
p_track->fmt.i_extra );
}
}
else
{
msg_Err( p_demux, "missing dvc1" );
}
break;
}
/* avc1: send avcC (h264 without annexe B, ie without start code)*/
case VLC_FOURCC( 'a', 'v', 'c', '1' ):
{
MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
if( p_avcC )
{
p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
p_track->fmt.i_extra );
}
}
else
{
msg_Err( p_demux, "missing avcC" );
}
break;
}
case VLC_CODEC_ADPCM_MS:
case VLC_CODEC_ADPCM_IMA_WAV:
case VLC_CODEC_QCELP:
p_track->fmt.audio.i_blockalign = p_sample->data.p_sample_soun->i_bytes_per_frame;
break;
default:
msg_Dbg( p_demux, "Unrecognized FourCC %4.4s", (char *)&p_sample->i_type );
break;
}
}
#undef p_decconfig
if( pp_es )
*pp_es = es_out_Add( p_demux->out, &p_track->fmt );
return VLC_SUCCESS;
}
/* given a time it return sample/chunk
* it also update elst field of the track
*/
static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
int64_t i_start, uint32_t *pi_chunk,
uint32_t *pi_sample )
{
demux_sys_t *p_sys = p_demux->p_sys;
MP4_Box_t *p_box_stss;
uint64_t i_dts;
unsigned int i_sample;
unsigned int i_chunk;
int i_index;
/* FIXME see if it's needed to check p_track->i_chunk_count */
if( p_track->i_chunk_count == 0 )
return( VLC_EGENERIC );
/* handle elst (find the correct one) */
MP4_TrackSetELST( p_demux, p_track, i_start );
if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
{
MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
/* now calculate i_start for this elst */
/* offset */
i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
if( i_start < 0 )
{
*pi_chunk = 0;
*pi_sample= 0;
return VLC_SUCCESS;
}
/* to track time scale */
i_start = i_start * p_track->i_timescale / (int64_t)1000000;
/* add elst offset */
if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
elst->i_media_time[p_track->i_elst] > 0 )
{
i_start += elst->i_media_time[p_track->i_elst];
}
msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
"ms (track)", p_track->i_elst,
i_mvt * 1000 / p_sys->i_timescale,
i_start * 1000 / p_track->i_timescale );
}
else
{
/* convert absolute time to in timescale unit */
i_start = i_start * p_track->i_timescale / (int64_t)1000000;
}
/* we start from sample 0/chunk 0, hope it won't take too much time */
/* *** find good chunk *** */
for( i_chunk = 0; ; i_chunk++ )
{
if( i_chunk + 1 >= p_track->i_chunk_count )
{
/* at the end and can't check if i_start in this chunk,
it will be check while searching i_sample */
i_chunk = p_track->i_chunk_count - 1;
break;
}
if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
(uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
{
break;
}
}
/* *** find sample in the chunk *** */
i_sample = p_track->chunk[i_chunk].i_sample_first;
i_dts = p_track->chunk[i_chunk].i_first_dts;
for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
{
if( i_dts +
p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
{
i_dts +=
p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
i_index++;
}
else
{
if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
{
break;
}
i_sample += ( i_start - i_dts ) /
p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
break;
}
}
if( i_sample >= p_track->i_sample_count )
{
msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
"(seeking too far) chunk=%d sample=%d",
p_track->i_track_ID, i_chunk, i_sample );
return( VLC_EGENERIC );
}
/* *** Try to find nearest sync points *** */
if( ( p_box_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
{
MP4_Box_data_stss_t *p_stss = p_box_stss->data.p_stss;
msg_Dbg( p_demux, "track[Id 0x%x] using Sync Sample Box (stss)",
p_track->i_track_ID );
for( unsigned i_index = 0; i_index < p_stss->i_entry_count; i_index++ )
{
if( i_index >= p_stss->i_entry_count - 1 ||
i_sample < p_stss->i_sample_number[i_index+1] )
{
unsigned i_sync_sample = p_stss->i_sample_number[i_index];
msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
i_sample, i_sync_sample );
if( i_sync_sample <= i_sample )
{
while( i_chunk > 0 &&
i_sync_sample < p_track->chunk[i_chunk].i_sample_first )
i_chunk--;
}
else
{
while( i_chunk < p_track->i_chunk_count - 1 &&
i_sync_sample >= p_track->chunk[i_chunk].i_sample_first +
p_track->chunk[i_chunk].i_sample_count )
i_chunk++;
}
i_sample = i_sync_sample;
break;
}
}
}
else
{
msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
"Sample Box (stss)", p_track->i_track_ID );
}
*pi_chunk = i_chunk;
*pi_sample = i_sample;
return VLC_SUCCESS;
}
static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
unsigned int i_chunk, unsigned int i_sample )
{
bool b_reselect = false;
/* now see if actual es is ok */
if( p_track->i_chunk >= p_track->i_chunk_count ||
p_track->chunk[p_track->i_chunk].i_sample_description_index !=
p_track->chunk[i_chunk].i_sample_description_index )
{
msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
p_track->i_track_ID );
es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
p_track->p_es, &b_reselect );
es_out_Del( p_demux->out, p_track->p_es );
p_track->p_es = NULL;
if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
{
msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
p_track->i_track_ID );
p_track->b_ok = false;
p_track->b_selected = false;
return VLC_EGENERIC;
}
}
/* select again the new decoder */
if( b_reselect )
{
es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
}
p_track->i_chunk = i_chunk;
p_track->i_sample = i_sample;
return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
}
/****************************************************************************
* MP4_TrackCreate:
****************************************************************************
* Parse track information and create all needed data to run a track
* If it succeed b_ok is set to 1 else to 0
****************************************************************************/
static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
MP4_Box_t *p_box_trak,
bool b_force_enable )
{
demux_sys_t *p_sys = p_demux->p_sys;
MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
MP4_Box_t *p_elst;
MP4_Box_t *p_mdhd;
MP4_Box_t *p_udta;
MP4_Box_t *p_hdlr;
MP4_Box_t *p_vmhd;
MP4_Box_t *p_smhd;
unsigned int i;
char language[4];
/* hint track unsupported */
/* set default value (-> track unusable) */
p_track->b_ok = false;
p_track->b_enable = false;
p_track->b_selected = false;
p_track->b_chapter = false;
p_track->b_mac_encoding = false;
es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
if( !p_tkhd )
{
return;
}
/* do we launch this track by default ? */
p_track->b_enable =
( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
if( !p_track->b_enable )
p_track->fmt.i_priority = -1;
p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
p_track->f_rotation = p_tkhd->data.p_tkhd->f_rotation;
if( p_tref )
{
/* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
}
p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
if( ( !p_mdhd )||( !p_hdlr ) )
{
return;
}
p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
if( !p_track->i_timescale )
return;
if( p_mdhd->data.p_mdhd->i_language_code < 0x800 )
{
/* We can convert i_language_code into iso 639 code,
* I won't */
strcpy( language, MP4_ConvertMacCode( p_mdhd->data.p_mdhd->i_language_code ) );
p_track->b_mac_encoding = true;
}
else
{
for( i = 0; i < 3; i++ )
language[i] = p_mdhd->data.p_mdhd->i_language[i];
language[3] = '\0';
}
switch( p_hdlr->data.p_hdlr->i_handler_type )
{
case( ATOM_soun ):
if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
{
return;
}
p_track->fmt.i_cat = AUDIO_ES;
break;
case( ATOM_vide ):
if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
{
return;
}
p_track->fmt.i_cat = VIDEO_ES;
break;
case( ATOM_text ):
case( ATOM_subp ):
case( ATOM_tx3g ):
case( ATOM_sbtl ):
p_track->fmt.i_cat = SPU_ES;
break;
default:
return;
}
p_track->i_elst = 0;
p_track->i_elst_time = 0;
if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
{
MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
unsigned int i;
msg_Warn( p_demux, "elst box found" );
for( i = 0; i < elst->i_entry_count; i++ )
{
msg_Dbg( p_demux, " - [%d] duration=%"PRId64"ms media time=%"PRId64
"ms) rate=%d.%d", i,
elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
elst->i_media_time[i] >= 0 ?
(int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
INT64_C(-1),
elst->i_media_rate_integer[i],
elst->i_media_rate_fraction[i] );
}
}
/* TODO
add support for:
p_dinf = MP4_BoxGet( p_minf, "dinf" );
*/
if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
!( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
{
return;
}
/* Set language */
if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
{
p_track->fmt.psz_language = strdup( language );
}
p_udta = MP4_BoxGet( p_box_trak, "udta" );
if( p_udta )
{
MP4_Box_t *p_box_iter;
for( p_box_iter = p_udta->p_first; p_box_iter != NULL;
p_box_iter = p_box_iter->p_next )
{
switch( p_box_iter->i_type )
{
case ATOM_0xa9nam:
p_track->fmt.psz_description =
strdup( p_box_iter->data.p_0xa9xxx->psz_text );
break;
case ATOM_name:
p_track->fmt.psz_description =
strdup( p_box_iter->data.p_name->psz_text );
break;
}
}
}
/* Create chunk index table and sample index table */
if( TrackCreateChunksIndex( p_demux,p_track ) ||
TrackCreateSamplesIndex( p_demux, p_track ) )
{
return; /* cannot create chunks index */
}
p_track->i_chunk = 0;
p_track->i_sample = 0;
/* Mark chapter only track */
if( p_sys->p_tref_chap )
{
MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
unsigned int i;
for( i = 0; i < p_chap->i_entry_count; i++ )
{
if( p_track->i_track_ID == p_chap->i_track_ID[i] )
{
p_track->b_chapter = true;
p_track->b_enable = false;
break;
}
}
}
/* now create es */
if( b_force_enable &&
( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
{
msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
p_track->i_track_ID );
p_track->b_enable = true;
p_track->fmt.i_priority = 0;
}
p_track->p_es = NULL;
if( TrackCreateES( p_demux,
p_track, p_track->i_chunk,
p_track->b_chapter ? NULL : &p_track->p_es ) )
{
msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
p_track->i_track_ID );
return;
}
p_track->b_ok = true;
#if 0
{
int i;
for( i = 0; i < p_track->i_chunk_count; i++ )
{
fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
i, p_track->chunk[i].i_sample_count,
p_track->chunk[i].i_first_dts );
}
}
#endif
}
/****************************************************************************
* MP4_TrackDestroy:
****************************************************************************
* Destroy a track created by MP4_TrackCreate.
****************************************************************************/
static void MP4_TrackDestroy( mp4_track_t *p_track )
{
unsigned int i_chunk;
p_track->b_ok = false;
p_track->b_enable = false;
p_track->b_selected = false;
es_format_Clean( &p_track->fmt );
for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
{
if( p_track->chunk )
{
FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
}
}
FREENULL( p_track->chunk );
if( !p_track->i_sample_size )
{
FREENULL( p_track->p_sample_size );
}
}
static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
mtime_t i_start )
{
if( !p_track->b_ok || p_track->b_chapter )
{
return VLC_EGENERIC;
}
if( p_track->b_selected )
{
msg_Warn( p_demux, "track[Id 0x%x] already selected",
p_track->i_track_ID );
return VLC_SUCCESS;
}
return MP4_TrackSeek( p_demux, p_track, i_start );
}
static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
{
if( !p_track->b_ok || p_track->b_chapter )
{
return;
}
if( !p_track->b_selected )
{
msg_Warn( p_demux, "track[Id 0x%x] already unselected",
p_track->i_track_ID );
return;
}
if( p_track->p_es )
{
es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
p_track->p_es, false );
}
p_track->b_selected = false;
}
static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
mtime_t i_start )
{
uint32_t i_chunk;
uint32_t i_sample;
if( !p_track->b_ok || p_track->b_chapter )
return VLC_EGENERIC;
p_track->b_selected = false;
if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
&i_chunk, &i_sample ) )
{
msg_Warn( p_demux, "cannot select track[Id 0x%x]",
p_track->i_track_ID );
return VLC_EGENERIC;
}
p_track->b_selected = true;
if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
p_track->b_selected = true;
return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
}
/*
* 3 types: for audio
*
*/
#define QT_V0_MAX_SAMPLES 1024
static int MP4_TrackSampleSize( mp4_track_t *p_track )
{
int i_size;
MP4_Box_data_sample_soun_t *p_soun;
if( p_track->i_sample_size == 0 )
{
/* most simple case */
return p_track->p_sample_size[p_track->i_sample];
}
if( p_track->fmt.i_cat != AUDIO_ES )
{
return p_track->i_sample_size;
}
p_soun = p_track->p_sample->data.p_sample_soun;
if( p_soun->i_qt_version == 1 )
{
int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count;
if( p_track->fmt.audio.i_blockalign > 1 )
i_samples = p_soun->i_sample_per_packet;
i_size = i_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
}
else if( p_track->i_sample_size > 256 )
{
/* We do that so we don't read too much data
* (in this case we are likely dealing with compressed data) */
i_size = p_track->i_sample_size;
}
else
{
/* Read a bunch of samples at once */
int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
( p_track->i_sample -
p_track->chunk[p_track->i_chunk].i_sample_first );
i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
i_size = i_samples * p_track->i_sample_size;
}
//fprintf( stderr, "size=%d\n", i_size );
return i_size;
}
static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
{
unsigned int i_sample;
uint64_t i_pos;
i_pos = p_track->chunk[p_track->i_chunk].i_offset;
if( p_track->i_sample_size )
{
MP4_Box_data_sample_soun_t *p_soun =
p_track->p_sample->data.p_sample_soun;
if( p_track->fmt.i_cat != AUDIO_ES || p_soun->i_qt_version == 0 )
{
i_pos += ( p_track->i_sample -
p_track->chunk[p_track->i_chunk].i_sample_first ) *
p_track->i_sample_size;
}
else
{
/* we read chunk by chunk unless a blockalign is requested */
if( p_track->fmt.audio.i_blockalign > 1 )
i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
}
}
else
{
for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
i_sample < p_track->i_sample; i_sample++ )
{
i_pos += p_track->p_sample_size[i_sample];
}
}
return i_pos;
}
static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
{
if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
{
MP4_Box_data_sample_soun_t *p_soun;
p_soun = p_track->p_sample->data.p_sample_soun;
if( p_soun->i_qt_version == 1 )
{
/* we read chunk by chunk unless a blockalign is requested */
if( p_track->fmt.audio.i_blockalign > 1 )
p_track->i_sample += p_soun->i_sample_per_packet;
else
p_track->i_sample += p_track->chunk[p_track->i_chunk].i_sample_count;
}
else if( p_track->i_sample_size > 256 )
{
/* We do that so we don't read too much data
* (in this case we are likely dealing with compressed data) */
p_track->i_sample += 1;
}
else
{
/* FIXME */
p_track->i_sample += QT_V0_MAX_SAMPLES;
if( p_track->i_sample >
p_track->chunk[p_track->i_chunk].i_sample_first +
p_track->chunk[p_track->i_chunk].i_sample_count )
{
p_track->i_sample =
p_track->chunk[p_track->i_chunk].i_sample_first +
p_track->chunk[p_track->i_chunk].i_sample_count;
}
}
}
else
{
p_track->i_sample++;
}
if( p_track->i_sample >= p_track->i_sample_count )
return VLC_EGENERIC;
/* Have we changed chunk ? */
if( p_track->i_sample >=
p_track->chunk[p_track->i_chunk].i_sample_first +
p_track->chunk[p_track->i_chunk].i_sample_count )
{
if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
p_track->i_sample ) )
{
msg_Warn( p_demux, "track[0x%x] will be disabled "
"(cannot restart decoder)", p_track->i_track_ID );
MP4_TrackUnselect( p_demux, p_track );
return VLC_EGENERIC;
}
}
/* Have we changed elst */
if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
{
demux_sys_t *p_sys = p_demux->p_sys;
MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
p_sys->i_timescale / (int64_t)1000000;
if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
i_mvt >= p_track->i_elst_time +
elst->i_segment_duration[p_track->i_elst] )
{
MP4_TrackSetELST( p_demux, p_track,
MP4_TrackGetDTS( p_demux, p_track ) );
}
}
return VLC_SUCCESS;
}
static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
int64_t i_time )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_elst_last = tk->i_elst;
/* handle elst (find the correct one) */
tk->i_elst = 0;
tk->i_elst_time = 0;
if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
{
MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
{
mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
{
break;
}
tk->i_elst_time += i_dur;
}
if( (unsigned int)tk->i_elst >= elst->i_entry_count )
{
/* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
tk->i_elst = elst->i_entry_count - 1;
tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
}
if( elst->i_media_time[tk->i_elst] < 0 )
{
/* track offset */
tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
}
}
if( i_elst_last != tk->i_elst )
{
msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
}
}
/* */
static const char *MP4_ConvertMacCode( uint16_t i_code )
{
static const struct { const char psz_iso639_1[3]; uint16_t i_code; } p_cvt[] = {
{ "en", 0 }, { "fr", 1 }, { "de", 2 }, { "it", 3 }, { "nl", 4 },
{ "sv", 5 }, { "es", 6 }, { "da", 7 }, { "pt", 8 }, { "no", 9 },
{ "he", 10 }, { "ja", 11 }, { "ar", 12 }, { "fi", 13 }, { "el", 14 },
{ "is", 15 }, { "mt", 16 }, { "tr", 17 }, { "hr", 18 }, { "zh", 19 },
{ "ur", 20 }, { "hi", 21 }, { "th", 22 }, { "ko", 23 }, { "lt", 24 },
{ "pl", 25 }, { "hu", 26 }, { "et", 27 }, { "lv", 28 }, //{ "??", 29 },
{ "fo", 30 }, { "fa", 31 }, { "ru", 32 }, { "zh", 33 }, { "nl", 34 },
{ "ga", 35 }, { "sq", 36 }, { "ro", 37 }, { "cs", 38 }, { "sk", 39 },
{ "sl", 40 }, { "yi", 41 }, { "sr", 42 }, { "mk", 43 }, { "bg", 44 },
{ "uk", 45 }, { "be", 46 }, { "uz", 47 }, { "az", 48 }, { "kk", 48 },
{ "az", 50 }, { "hy", 51 }, { "ka", 52 }, { "mo", 53 }, { "ky", 54 },
{ "tg", 55 }, { "tk", 56 }, { "mn", 57 }, { "mn", 58 }, { "ps", 59 },
{ "ku", 60 }, { "ks", 61 }, { "sd", 62 }, { "bo", 63 }, { "ne", 64 },
{ "sa", 65 }, { "mr", 66 }, { "bn", 67 }, { "as", 68 }, { "gu", 69 },
{ "pa", 70 }, { "or", 71 }, { "ml", 72 }, { "kn", 73 }, { "ta", 74 },
{ "te", 75 }, { "si", 76 }, { "my", 77 }, { "km", 78 }, { "lo", 79 },
{ "vi", 80 }, { "id", 81 }, { "tl", 82 }, { "ms", 83 }, { "ms", 84 },
{ "am", 85 }, { "ti", 86 }, { "om", 87 }, { "so", 88 }, { "sw", 89 },
{ "rw", 90 }, { "rn", 91 }, { "ny", 92 }, { "mg", 93 }, { "eo", 94 },
{ "cy", 128 }, { "eu", 129 },
{ "ca", 130 }, { "la", 131 }, { "qu", 132 }, { "gn", 133 }, { "ay", 134 },
{ "tt", 135 }, { "ug", 136 }, { "dz", 137 }, { "jv", 138 }, { "su", 139 },
{ "gl", 140 }, { "af", 141 }, { "br", 142 }, { "iu", 143 }, { "gd", 144 },
{ "gv", 145 }, { "ga", 146 }, { "to", 147 }, { "el", 148 },
/* */
{ "", 0 }
};
int i;
for( i = 0; *p_cvt[i].psz_iso639_1; i++ )
{
if( p_cvt[i].i_code == i_code )
return p_cvt[i].psz_iso639_1;
}
return "";
}