1 /*****************************************************************************
2 * libmp4.c : LibMP4 library for mp4 module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
7 * Author: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
23 #include <stdlib.h> /* malloc(), free() */
26 #include <vlc/input.h>
29 # include <zlib.h> /* for compressed moov */
35 /*****************************************************************************
36 * Here are defined some macro to make life simpler but before using it
39 *****************************************************************************/
40 #define MP4_BOX_HEADERSIZE( p_box ) \
41 ( 8 + ( p_box->i_shortsize == 1 ? 8 : 0 ) \
42 + ( p_box->i_type == FOURCC_uuid ? 16 : 0 ) )
44 #define MP4_GET1BYTE( dst ) \
45 dst = *p_peek; p_peek++; i_read--
47 #define MP4_GET2BYTES( dst ) \
48 dst = GetWBE( p_peek ); p_peek += 2; i_read -= 2
50 #define MP4_GET3BYTES( dst ) \
51 dst = Get24bBE( p_peek ); p_peek += 3; i_read -= 3
53 #define MP4_GET4BYTES( dst ) \
54 dst = GetDWBE( p_peek ); p_peek += 4; i_read -= 4
56 #define MP4_GETFOURCC( dst ) \
57 dst = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] ); \
58 p_peek += 4; i_read -= 4
60 #define MP4_GET8BYTES( dst ) \
61 dst = GetQWBE( p_peek ); p_peek += 8; i_read -= 8
63 #define MP4_GETVERSIONFLAGS( p_void ) \
64 MP4_GET1BYTE( p_void->i_version ); \
65 MP4_GET3BYTES( p_void->i_flags )
67 #define MP4_GETSTRINGZ( p_str ) \
68 if( ( i_read > 0 )&&(p_peek[0] ) ) \
70 p_str = calloc( sizeof( char ), __MIN( strlen( p_peek ), i_read )+1);\
71 memcpy( p_str, p_peek, __MIN( strlen( p_peek ), i_read ) ); \
72 p_str[__MIN( strlen( p_peek ), i_read )] = 0; \
73 p_peek += strlen( p_str ) + 1; \
74 i_read -= strlen( p_str ) + 1; \
82 #define MP4_READBOX_ENTER( MP4_Box_data_TYPE_t ) \
83 int64_t i_read = p_box->i_size; \
84 uint8_t *p_peek, *p_buff; \
85 i_read = p_box->i_size; \
86 if( !( p_peek = p_buff = malloc( i_read ) ) ) \
90 if( MP4_ReadStream( p_stream, p_peek, i_read ) )\
95 p_peek += MP4_BOX_HEADERSIZE( p_box ); \
96 i_read -= MP4_BOX_HEADERSIZE( p_box ); \
97 if( !( p_box->data.p_data = malloc( sizeof( MP4_Box_data_TYPE_t ) ) ) ) \
103 #define MP4_READBOX_EXIT( i_code ) \
107 msg_Warn( p_stream->s, "Not enough data" ); \
112 if( p ) {free( p ); p = NULL; }
117 * The input method HAVE to be seekable
121 static uint32_t Get24bBE( uint8_t *p )
123 return( ( p[0] <<16 ) + ( p[1] <<8 ) + p[2] );
126 static void GetUUID( UUID_t *p_uuid, uint8_t *p_buff )
128 memcpy( p_uuid, p_buff, 16 );
131 static void CreateUUID( UUID_t *p_uuid, uint32_t i_fourcc )
133 /* made by 0xXXXXXXXX-0011-0010-8000-00aa00389b71
134 where XXXXXXXX is the fourcc */
135 /* FIXME implement this */
138 /* some functions for mp4 encoding of variables */
140 static void MP4_ConvertDate2Str( char *psz, uint64_t i_date )
147 /* date begin at 1 jan 1904 */
148 i_date += ((1904U * 365) + 17) * 24 * 60 * 60;
150 i_day = i_date / ( 60*60*24);
151 i_hour = ( i_date /( 60*60 ) ) % 60;
152 i_min = ( i_date / 60 ) % 60;
154 sprintf( psz, "%dd-%2.2dh:%2.2dm:%2.2ds",
155 i_day, i_hour, i_min, i_sec );
158 /*****************************************************************************
160 *****************************************************************************/
161 static MP4_Box_t *MP4_ReadBox( MP4_Stream_t *p_stream, MP4_Box_t *p_father );
163 /*****************************************************************************
164 * Some basic functions to manipulate MP4_Stream_t, an abstraction of stream_t
165 * in the way that you can read from a memory buffer or from an input
167 *****************************************************************************/
169 /**** ------- First some function to make abstract from input -------- */
171 /****************************************************************************
172 * MP4_InputStream create an stram with an input
174 ****************************************************************************/
175 MP4_Stream_t *MP4_InputStream( stream_t *s )
177 MP4_Stream_t *p_stream;
179 if( !( p_stream = malloc( sizeof( MP4_Stream_t ) ) ) )
183 p_stream->b_memory = 0;
185 p_stream->i_start = 0;
186 p_stream->i_stop = 0;
187 p_stream->p_buffer = NULL;
192 /****************************************************************************
193 * MP4_MemoryStream create a memory stream
194 * if p_buffer == NULL, will allocate a buffer of i_size, else
195 * it uses p_buffer XXX you have to unallocate it yourself !
197 ****************************************************************************/
198 MP4_Stream_t *MP4_MemoryStream( stream_t *s,
199 int i_size, uint8_t *p_buffer )
201 MP4_Stream_t *p_stream;
203 if( !( p_stream = malloc( sizeof( MP4_Stream_t ) ) ) )
207 p_stream->b_memory = 1;
209 p_stream->i_start = 0;
210 p_stream->i_stop = i_size;
213 if( !( p_stream->p_buffer = malloc( i_size ) ) )
221 p_stream->p_buffer = p_buffer;
226 /****************************************************************************
227 * MP4_ReadStream read from a MP4_Stream_t
229 ****************************************************************************/
230 int MP4_ReadStream( MP4_Stream_t *p_stream, uint8_t *p_buff, int i_size )
232 if( p_stream->b_memory )
234 if( i_size > p_stream->i_stop - p_stream->i_start )
236 return( VLC_EGENERIC );
239 p_stream->p_buffer + p_stream->i_start,
241 p_stream->i_start += i_size;
242 return( VLC_SUCCESS );
246 return( stream_Read( p_stream->s, p_buff, i_size ) < i_size ? VLC_EGENERIC : VLC_SUCCESS);
250 /****************************************************************************
251 * MP4_PeekStream peek from a MP4_Stream_t
253 ****************************************************************************/
254 int MP4_PeekStream( MP4_Stream_t *p_stream, uint8_t **pp_peek, int i_size )
256 if( p_stream->b_memory )
258 *pp_peek = p_stream->p_buffer + p_stream->i_start;
260 return( __MIN(i_size,p_stream->i_stop - p_stream->i_start ));
265 if( stream_Size( p_stream->s ) > 0 )
267 int64_t i_max = stream_Size( p_stream->s ) - stream_Tell( p_stream->s );
273 return( stream_Peek( p_stream->s, pp_peek, i_size ) );
277 /****************************************************************************
278 * MP4_TellStream give absolute position in the stream
279 * XXX for a memory stream give position from begining of the buffer
280 ****************************************************************************/
281 off_t MP4_TellStream( MP4_Stream_t *p_stream )
283 if( p_stream->b_memory )
285 return( p_stream->i_start );
289 return( stream_Tell( p_stream->s ) );
293 /****************************************************************************
294 * MP4_SeekStream seek in a MP4_Stream_t
296 ****************************************************************************/
297 int MP4_SeekStream( MP4_Stream_t *p_stream, off_t i_pos)
299 if( p_stream->b_memory )
301 if( i_pos < p_stream->i_stop )
303 p_stream->i_start = i_pos;
304 return( VLC_SUCCESS );
308 return( VLC_EGENERIC );
313 return( stream_Seek( p_stream->s, (int64_t)i_pos ) );
319 /*****************************************************************************
320 * MP4_ReadBoxCommon : Load only common parameters for all boxes
321 *****************************************************************************
322 * p_box need to be an already allocated MP4_Box_t, and all data
323 * will only be peek not read
325 * RETURN : 0 if it fail, 1 otherwise
326 *****************************************************************************/
327 static int MP4_ReadBoxCommon( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
332 if( ( ( i_read = MP4_PeekStream( p_stream, &p_peek, 32 ) ) < 8 ) )
336 p_box->i_pos = MP4_TellStream( p_stream );
338 p_box->data.p_data = NULL;
339 p_box->p_father = NULL;
340 p_box->p_first = NULL;
341 p_box->p_last = NULL;
342 p_box->p_next = NULL;
344 MP4_GET4BYTES( p_box->i_shortsize );
345 MP4_GETFOURCC( p_box->i_type );
347 /* Now special case */
349 if( p_box->i_shortsize == 1 )
351 /* get the true size on 64 bits */
352 MP4_GET8BYTES( p_box->i_size );
356 p_box->i_size = p_box->i_shortsize;
357 /* XXX size of 0 means that the box extends to end of file */
360 if( p_box->i_type == FOURCC_uuid )
362 /* get extented type on 16 bytes */
363 GetUUID( &p_box->i_uuid, p_peek );
364 p_peek += 16; i_read -= 16;
368 CreateUUID( &p_box->i_uuid, p_box->i_type );
373 msg_Dbg( p_stream->s, "found Box: %4.4s size "I64Fd,
374 (char*)&p_box->i_type,
383 /*****************************************************************************
384 * MP4_NextBox : Go to the next box
385 *****************************************************************************
386 * if p_box == NULL, go to the next box in witch we are( at the begining ).
387 *****************************************************************************/
388 static int MP4_NextBox( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
394 MP4_ReadBoxCommon( p_stream, &box );
400 return( 2 ); /* Box with infinite size */
403 if( p_box->p_father )
405 /* check if it's within p-father */
406 if( p_box->i_size + p_box->i_pos >=
407 p_box->p_father->i_size + p_box->p_father->i_pos )
409 return( 0 ); /* out of bound */
412 return( MP4_SeekStream( p_stream, p_box->i_size + p_box->i_pos ) ? 0 : 1 );
415 /*****************************************************************************
416 * For all known box a loader is given,
417 * XXX: all common struct have to be already read by MP4_ReadBoxCommon
418 * after called one of theses functions, file position is unknown
419 * you need to call MP4_GotoBox to go where you want
420 *****************************************************************************/
421 static int MP4_ReadBoxContainerRaw( MP4_Stream_t *p_stream, MP4_Box_t *p_container )
425 if( MP4_TellStream( p_stream ) + 8 >
426 (off_t)(p_container->i_pos + p_container->i_size) )
428 /* there is no box to load */
434 if( ( p_box = MP4_ReadBox( p_stream, p_container ) ) == NULL )
438 /* chain this box with the father and the other at same level */
439 if( !p_container->p_first )
441 p_container->p_first = p_box;
445 p_container->p_last->p_next = p_box;
447 p_container->p_last = p_box;
448 } while( MP4_NextBox( p_stream, p_box ) == 1 );
454 static int MP4_ReadBoxContainer( MP4_Stream_t *p_stream, MP4_Box_t *p_container )
456 if( p_container->i_size <= (size_t)MP4_BOX_HEADERSIZE(p_container ) + 8 )
458 /* container is empty, 8 stand for the first header in this box */
463 MP4_SeekStream( p_stream, p_container->i_pos + MP4_BOX_HEADERSIZE( p_container ) );
465 return( MP4_ReadBoxContainerRaw( p_stream, p_container ) );
468 static void MP4_FreeBox_Common( MP4_Box_t *p_box )
470 /* Up to now do nothing */
473 static int MP4_ReadBoxSkip( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
475 /* XXX sometime moov is hiden in a free box */
476 if( p_box->p_father && p_box->p_father->i_type == VLC_FOURCC( 'r', 'o', 'o', 't' )&&
477 p_box->i_type == FOURCC_free )
483 i_read = MP4_PeekStream( p_stream, &p_peek, 44 );
485 p_peek += MP4_BOX_HEADERSIZE( p_box ) + 4;
486 i_read -= MP4_BOX_HEADERSIZE( p_box ) + 4;
490 i_fcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
492 if( i_fcc == FOURCC_cmov || i_fcc == FOURCC_mvhd )
494 msg_Warn( p_stream->s, "detected moov hidden in a free box ..." );
496 p_box->i_type = FOURCC_foov;
497 return MP4_ReadBoxContainer( p_stream, p_box );
503 msg_Dbg( p_stream->s, "skip box: \"%4.4s\"",
504 (char*)&p_box->i_type );
509 static int MP4_ReadBox_ftyp( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
511 MP4_READBOX_ENTER( MP4_Box_data_ftyp_t );
513 MP4_GETFOURCC( p_box->data.p_ftyp->i_major_brand );
514 MP4_GET4BYTES( p_box->data.p_ftyp->i_minor_version );
516 if( ( p_box->data.p_ftyp->i_compatible_brands_count = i_read / 4 ) )
519 p_box->data.p_ftyp->i_compatible_brands =
520 calloc( p_box->data.p_ftyp->i_compatible_brands_count, sizeof(uint32_t));
522 for( i =0; i < p_box->data.p_ftyp->i_compatible_brands_count; i++ )
524 MP4_GETFOURCC( p_box->data.p_ftyp->i_compatible_brands[i] );
529 p_box->data.p_ftyp->i_compatible_brands = NULL;
532 MP4_READBOX_EXIT( 1 );
535 static void MP4_FreeBox_ftyp( MP4_Box_t *p_box )
537 FREE( p_box->data.p_ftyp->i_compatible_brands );
541 static int MP4_ReadBox_mvhd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
545 char s_creation_time[128];
546 char s_modification_time[128];
547 char s_duration[128];
549 MP4_READBOX_ENTER( MP4_Box_data_mvhd_t );
551 MP4_GETVERSIONFLAGS( p_box->data.p_mvhd );
553 if( p_box->data.p_mvhd->i_version )
555 MP4_GET8BYTES( p_box->data.p_mvhd->i_creation_time );
556 MP4_GET8BYTES( p_box->data.p_mvhd->i_modification_time );
557 MP4_GET4BYTES( p_box->data.p_mvhd->i_timescale );
558 MP4_GET8BYTES( p_box->data.p_mvhd->i_duration );
562 MP4_GET4BYTES( p_box->data.p_mvhd->i_creation_time );
563 MP4_GET4BYTES( p_box->data.p_mvhd->i_modification_time );
564 MP4_GET4BYTES( p_box->data.p_mvhd->i_timescale );
565 MP4_GET4BYTES( p_box->data.p_mvhd->i_duration );
567 MP4_GET4BYTES( p_box->data.p_mvhd->i_rate );
568 MP4_GET2BYTES( p_box->data.p_mvhd->i_volume );
569 MP4_GET2BYTES( p_box->data.p_mvhd->i_reserved1 );
572 for( i = 0; i < 2; i++ )
574 MP4_GET4BYTES( p_box->data.p_mvhd->i_reserved2[i] );
576 for( i = 0; i < 9; i++ )
578 MP4_GET4BYTES( p_box->data.p_mvhd->i_matrix[i] );
580 for( i = 0; i < 6; i++ )
582 MP4_GET4BYTES( p_box->data.p_mvhd->i_predefined[i] );
585 MP4_GET4BYTES( p_box->data.p_mvhd->i_next_track_id );
589 MP4_ConvertDate2Str( s_creation_time, p_box->data.p_mvhd->i_creation_time );
590 MP4_ConvertDate2Str( s_modification_time,
591 p_box->data.p_mvhd->i_modification_time );
592 if( p_box->data.p_mvhd->i_rate )
594 MP4_ConvertDate2Str( s_duration,
595 p_box->data.p_mvhd->i_duration / p_box->data.p_mvhd->i_rate );
601 msg_Dbg( p_stream->s, "read box: \"mvhd\" creation %s modification %s time scale %d duration %s rate %f volume %f next track id %d",
604 (uint32_t)p_box->data.p_mvhd->i_timescale,
606 (float)p_box->data.p_mvhd->i_rate / (1<<16 ),
607 (float)p_box->data.p_mvhd->i_volume / 256 ,
608 (uint32_t)p_box->data.p_mvhd->i_next_track_id );
610 MP4_READBOX_EXIT( 1 );
613 static int MP4_ReadBox_tkhd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
617 char s_creation_time[128];
618 char s_modification_time[128];
619 char s_duration[128];
621 MP4_READBOX_ENTER( MP4_Box_data_tkhd_t );
623 MP4_GETVERSIONFLAGS( p_box->data.p_tkhd );
625 if( p_box->data.p_tkhd->i_version )
627 MP4_GET8BYTES( p_box->data.p_tkhd->i_creation_time );
628 MP4_GET8BYTES( p_box->data.p_tkhd->i_modification_time );
629 MP4_GET4BYTES( p_box->data.p_tkhd->i_track_ID );
630 MP4_GET4BYTES( p_box->data.p_tkhd->i_reserved );
631 MP4_GET8BYTES( p_box->data.p_tkhd->i_duration );
635 MP4_GET4BYTES( p_box->data.p_tkhd->i_creation_time );
636 MP4_GET4BYTES( p_box->data.p_tkhd->i_modification_time );
637 MP4_GET4BYTES( p_box->data.p_tkhd->i_track_ID );
638 MP4_GET4BYTES( p_box->data.p_tkhd->i_reserved );
639 MP4_GET4BYTES( p_box->data.p_tkhd->i_duration );
642 for( i = 0; i < 2; i++ )
644 MP4_GET4BYTES( p_box->data.p_tkhd->i_reserved2[i] );
646 MP4_GET2BYTES( p_box->data.p_tkhd->i_layer );
647 MP4_GET2BYTES( p_box->data.p_tkhd->i_predefined );
648 MP4_GET2BYTES( p_box->data.p_tkhd->i_volume );
649 MP4_GET2BYTES( p_box->data.p_tkhd->i_reserved3 );
651 for( i = 0; i < 9; i++ )
653 MP4_GET4BYTES( p_box->data.p_tkhd->i_matrix[i] );
655 MP4_GET4BYTES( p_box->data.p_tkhd->i_width );
656 MP4_GET4BYTES( p_box->data.p_tkhd->i_height );
659 MP4_ConvertDate2Str( s_creation_time, p_box->data.p_mvhd->i_creation_time );
660 MP4_ConvertDate2Str( s_modification_time, p_box->data.p_mvhd->i_modification_time );
661 MP4_ConvertDate2Str( s_duration, p_box->data.p_mvhd->i_duration );
663 msg_Dbg( p_stream->s, "read box: \"tkhd\" creation %s modification %s duration %s track ID %d layer %d volume %f width %f height %f",
667 p_box->data.p_tkhd->i_track_ID,
668 p_box->data.p_tkhd->i_layer,
669 (float)p_box->data.p_tkhd->i_volume / 256 ,
670 (float)p_box->data.p_tkhd->i_width / 65536,
671 (float)p_box->data.p_tkhd->i_height / 65536 );
673 MP4_READBOX_EXIT( 1 );
677 static int MP4_ReadBox_mdhd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
682 char s_creation_time[128];
683 char s_modification_time[128];
684 char s_duration[128];
686 MP4_READBOX_ENTER( MP4_Box_data_mdhd_t );
688 MP4_GETVERSIONFLAGS( p_box->data.p_mdhd );
690 if( p_box->data.p_mdhd->i_version )
692 MP4_GET8BYTES( p_box->data.p_mdhd->i_creation_time );
693 MP4_GET8BYTES( p_box->data.p_mdhd->i_modification_time );
694 MP4_GET4BYTES( p_box->data.p_mdhd->i_timescale );
695 MP4_GET8BYTES( p_box->data.p_mdhd->i_duration );
699 MP4_GET4BYTES( p_box->data.p_mdhd->i_creation_time );
700 MP4_GET4BYTES( p_box->data.p_mdhd->i_modification_time );
701 MP4_GET4BYTES( p_box->data.p_mdhd->i_timescale );
702 MP4_GET4BYTES( p_box->data.p_mdhd->i_duration );
704 i_language = GetWBE( p_peek );
705 for( i = 0; i < 3; i++ )
707 p_box->data.p_mdhd->i_language[i] =
708 ( ( i_language >> ( (2-i)*5 ) )&0x1f ) + 0x60;
711 MP4_GET2BYTES( p_box->data.p_mdhd->i_predefined );
714 MP4_ConvertDate2Str( s_creation_time, p_box->data.p_mdhd->i_creation_time );
715 MP4_ConvertDate2Str( s_modification_time, p_box->data.p_mdhd->i_modification_time );
716 MP4_ConvertDate2Str( s_duration, p_box->data.p_mdhd->i_duration );
717 msg_Dbg( p_stream->s, "read box: \"mdhd\" creation %s modification %s time scale %d duration %s language %c%c%c",
720 (uint32_t)p_box->data.p_mdhd->i_timescale,
722 p_box->data.p_mdhd->i_language[0],
723 p_box->data.p_mdhd->i_language[1],
724 p_box->data.p_mdhd->i_language[2] );
726 MP4_READBOX_EXIT( 1 );
730 static int MP4_ReadBox_hdlr( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
732 MP4_READBOX_ENTER( MP4_Box_data_hdlr_t );
734 MP4_GETVERSIONFLAGS( p_box->data.p_hdlr );
736 MP4_GET4BYTES( p_box->data.p_hdlr->i_predefined );
737 MP4_GETFOURCC( p_box->data.p_hdlr->i_handler_type );
739 p_box->data.p_hdlr->psz_name = calloc( sizeof( char ), i_read + 1 );
740 memcpy( p_box->data.p_hdlr->psz_name, p_peek, i_read );
743 msg_Dbg( p_stream->s, "read box: \"hdlr\" hanler type %4.4s name %s",
744 (char*)&p_box->data.p_hdlr->i_handler_type,
745 p_box->data.p_hdlr->psz_name );
748 MP4_READBOX_EXIT( 1 );
751 static void MP4_FreeBox_hdlr( MP4_Box_t *p_box )
753 FREE( p_box->data.p_hdlr->psz_name );
756 static int MP4_ReadBox_vmhd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
760 MP4_READBOX_ENTER( MP4_Box_data_vmhd_t );
762 MP4_GETVERSIONFLAGS( p_box->data.p_vmhd );
764 MP4_GET2BYTES( p_box->data.p_vmhd->i_graphics_mode );
765 for( i = 0; i < 3; i++ )
767 MP4_GET2BYTES( p_box->data.p_vmhd->i_opcolor[i] );
771 msg_Dbg( p_stream->s, "read box: \"vmhd\" graphics-mode %d opcolor (%d, %d, %d)",
772 p_box->data.p_vmhd->i_graphics_mode,
773 p_box->data.p_vmhd->i_opcolor[0],
774 p_box->data.p_vmhd->i_opcolor[1],
775 p_box->data.p_vmhd->i_opcolor[2] );
777 MP4_READBOX_EXIT( 1 );
780 static int MP4_ReadBox_smhd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
782 MP4_READBOX_ENTER( MP4_Box_data_smhd_t );
784 MP4_GETVERSIONFLAGS( p_box->data.p_smhd );
788 MP4_GET2BYTES( p_box->data.p_smhd->i_balance );
790 MP4_GET2BYTES( p_box->data.p_smhd->i_reserved );
793 msg_Dbg( p_stream->s, "read box: \"smhd\" balance %f",
794 (float)p_box->data.p_smhd->i_balance / 256 );
796 MP4_READBOX_EXIT( 1 );
800 static int MP4_ReadBox_hmhd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
802 MP4_READBOX_ENTER( MP4_Box_data_hmhd_t );
804 MP4_GETVERSIONFLAGS( p_box->data.p_hmhd );
806 MP4_GET2BYTES( p_box->data.p_hmhd->i_max_PDU_size );
807 MP4_GET2BYTES( p_box->data.p_hmhd->i_avg_PDU_size );
809 MP4_GET4BYTES( p_box->data.p_hmhd->i_max_bitrate );
810 MP4_GET4BYTES( p_box->data.p_hmhd->i_avg_bitrate );
812 MP4_GET4BYTES( p_box->data.p_hmhd->i_reserved );
815 msg_Dbg( p_stream->s, "read box: \"hmhd\" maxPDU-size %d avgPDU-size %d max-bitrate %d avg-bitrate %d",
816 p_box->data.p_hmhd->i_max_PDU_size,
817 p_box->data.p_hmhd->i_avg_PDU_size,
818 p_box->data.p_hmhd->i_max_bitrate,
819 p_box->data.p_hmhd->i_avg_bitrate );
821 MP4_READBOX_EXIT( 1 );
824 static int MP4_ReadBox_url( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
826 MP4_READBOX_ENTER( MP4_Box_data_url_t );
828 MP4_GETVERSIONFLAGS( p_box->data.p_url );
829 MP4_GETSTRINGZ( p_box->data.p_url->psz_location );
832 msg_Dbg( p_stream->s, "read box: \"url\" url: %s",
833 p_box->data.p_url->psz_location );
836 MP4_READBOX_EXIT( 1 );
840 static void MP4_FreeBox_url( MP4_Box_t *p_box )
842 FREE( p_box->data.p_url->psz_location )
845 static int MP4_ReadBox_urn( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
847 MP4_READBOX_ENTER( MP4_Box_data_urn_t );
849 MP4_GETVERSIONFLAGS( p_box->data.p_urn );
851 MP4_GETSTRINGZ( p_box->data.p_urn->psz_name );
852 MP4_GETSTRINGZ( p_box->data.p_urn->psz_location );
855 msg_Dbg( p_stream->s, "read box: \"urn\" name %s location %s",
856 p_box->data.p_urn->psz_name,
857 p_box->data.p_urn->psz_location );
859 MP4_READBOX_EXIT( 1 );
861 static void MP4_FreeBox_urn( MP4_Box_t *p_box )
863 FREE( p_box->data.p_urn->psz_name );
864 FREE( p_box->data.p_urn->psz_location );
868 static int MP4_ReadBox_dref( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
870 MP4_READBOX_ENTER( MP4_Box_data_dref_t );
872 MP4_GETVERSIONFLAGS( p_box->data.p_dref );
874 MP4_GET4BYTES( p_box->data.p_dref->i_entry_count );
876 MP4_SeekStream( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 8 );
877 MP4_ReadBoxContainerRaw( p_stream, p_box );
880 msg_Dbg( p_stream->s, "read box: \"dref\" entry-count %d",
881 p_box->data.p_dref->i_entry_count );
884 MP4_READBOX_EXIT( 1 );
888 static int MP4_ReadBox_stts( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
891 MP4_READBOX_ENTER( MP4_Box_data_stts_t );
893 MP4_GETVERSIONFLAGS( p_box->data.p_stts );
894 MP4_GET4BYTES( p_box->data.p_stts->i_entry_count );
896 p_box->data.p_stts->i_sample_count =
897 calloc( sizeof( uint32_t ), p_box->data.p_stts->i_entry_count );
898 p_box->data.p_stts->i_sample_delta =
899 calloc( sizeof( uint32_t ), p_box->data.p_stts->i_entry_count );
901 for( i = 0; (i < p_box->data.p_stts->i_entry_count )&&( i_read >=8 ); i++ )
903 MP4_GET4BYTES( p_box->data.p_stts->i_sample_count[i] );
904 MP4_GET4BYTES( p_box->data.p_stts->i_sample_delta[i] );
908 msg_Dbg( p_stream->s, "read box: \"stts\" entry-count %d",
909 p_box->data.p_stts->i_entry_count );
912 MP4_READBOX_EXIT( 1 );
915 static void MP4_FreeBox_stts( MP4_Box_t *p_box )
917 FREE( p_box->data.p_stts->i_sample_count );
918 FREE( p_box->data.p_stts->i_sample_delta );
921 static int MP4_ReadBox_ctts( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
924 MP4_READBOX_ENTER( MP4_Box_data_ctts_t );
926 MP4_GETVERSIONFLAGS( p_box->data.p_ctts );
928 MP4_GET4BYTES( p_box->data.p_ctts->i_entry_count );
930 p_box->data.p_ctts->i_sample_count =
931 calloc( sizeof( uint32_t ), p_box->data.p_ctts->i_entry_count );
932 p_box->data.p_ctts->i_sample_offset =
933 calloc( sizeof( uint32_t ), p_box->data.p_ctts->i_entry_count );
935 for( i = 0; (i < p_box->data.p_ctts->i_entry_count )&&( i_read >=8 ); i++ )
937 MP4_GET4BYTES( p_box->data.p_ctts->i_sample_count[i] );
938 MP4_GET4BYTES( p_box->data.p_ctts->i_sample_offset[i] );
942 msg_Dbg( p_stream->s, "read box: \"ctts\" entry-count %d",
943 p_box->data.p_ctts->i_entry_count );
946 MP4_READBOX_EXIT( 1 );
949 static void MP4_FreeBox_ctts( MP4_Box_t *p_box )
951 FREE( p_box->data.p_ctts->i_sample_count );
952 FREE( p_box->data.p_ctts->i_sample_offset );
955 static int MP4_ReadLengthDescriptor( uint8_t **pp_peek, int64_t *i_read )
958 unsigned int i_len = 0;
965 i_len = ( i_len << 7 ) + ( i_b&0x7f );
970 static int MP4_ReadBox_esds( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
972 #define es_descriptor p_box->data.p_esds->es_descriptor
974 unsigned int i_flags;
977 MP4_READBOX_ENTER( MP4_Box_data_esds_t );
979 MP4_GETVERSIONFLAGS( p_box->data.p_esds );
982 MP4_GET1BYTE( i_type );
983 if( i_type == 0x03 ) /* MP4ESDescrTag */
985 i_len = MP4_ReadLengthDescriptor( &p_peek, &i_read );
988 msg_Dbg( p_stream->s, "found esds MPEG4ESDescr (%dBytes)",
992 MP4_GET2BYTES( es_descriptor.i_ES_ID );
993 MP4_GET1BYTE( i_flags );
994 es_descriptor.b_stream_dependence = ( (i_flags&0x80) != 0);
995 es_descriptor.b_url = ( (i_flags&0x40) != 0);
996 es_descriptor.b_OCRstream = ( (i_flags&0x20) != 0);
998 es_descriptor.i_stream_priority = i_flags&0x1f;
999 if( es_descriptor.b_stream_dependence )
1001 MP4_GET2BYTES( es_descriptor.i_depend_on_ES_ID );
1003 if( es_descriptor.b_url )
1007 MP4_GET1BYTE( i_len );
1008 es_descriptor.psz_URL = calloc( sizeof(char), i_len + 1 );
1009 memcpy( es_descriptor.psz_URL, p_peek, i_len );
1010 es_descriptor.psz_URL[i_len] = 0;
1016 es_descriptor.psz_URL = NULL;
1018 if( es_descriptor.b_OCRstream )
1020 MP4_GET2BYTES( es_descriptor.i_OCR_ES_ID );
1022 MP4_GET1BYTE( i_type ); /* get next type */
1025 if( i_type != 0x04)/* MP4DecConfigDescrTag */
1027 es_descriptor.p_decConfigDescr = NULL;
1028 MP4_READBOX_EXIT( 1 ); /* rest isn't interesting up to now */
1031 i_len = MP4_ReadLengthDescriptor( &p_peek, &i_read );
1034 msg_Dbg( p_stream->s, "found esds MP4DecConfigDescr (%dBytes)",
1038 es_descriptor.p_decConfigDescr =
1039 malloc( sizeof( MP4_descriptor_decoder_config_t ));
1041 MP4_GET1BYTE( es_descriptor.p_decConfigDescr->i_objectTypeIndication );
1042 MP4_GET1BYTE( i_flags );
1043 es_descriptor.p_decConfigDescr->i_streamType = i_flags >> 2;
1044 es_descriptor.p_decConfigDescr->b_upStream = ( i_flags >> 1 )&0x01;
1045 MP4_GET3BYTES( es_descriptor.p_decConfigDescr->i_buffer_sizeDB );
1046 MP4_GET4BYTES( es_descriptor.p_decConfigDescr->i_max_bitrate );
1047 MP4_GET4BYTES( es_descriptor.p_decConfigDescr->i_avg_bitrate );
1048 MP4_GET1BYTE( i_type );
1049 if( i_type != 0x05 )/* MP4DecSpecificDescrTag */
1051 es_descriptor.p_decConfigDescr->i_decoder_specific_info_len = 0;
1052 es_descriptor.p_decConfigDescr->p_decoder_specific_info = NULL;
1053 MP4_READBOX_EXIT( 1 );
1056 i_len = MP4_ReadLengthDescriptor( &p_peek, &i_read );
1059 msg_Dbg( p_stream->s, "found esds MP4DecSpecificDescr (%dBytes)",
1063 es_descriptor.p_decConfigDescr->i_decoder_specific_info_len = i_len;
1064 es_descriptor.p_decConfigDescr->p_decoder_specific_info = malloc( i_len );
1065 memcpy( es_descriptor.p_decConfigDescr->p_decoder_specific_info,
1068 MP4_READBOX_EXIT( 1 );
1070 #undef es_descriptor
1073 static void MP4_FreeBox_esds( MP4_Box_t *p_box )
1075 FREE( p_box->data.p_esds->es_descriptor.psz_URL );
1076 if( p_box->data.p_esds->es_descriptor.p_decConfigDescr )
1078 FREE( p_box->data.p_esds->es_descriptor.p_decConfigDescr->p_decoder_specific_info );
1080 FREE( p_box->data.p_esds->es_descriptor.p_decConfigDescr );
1083 static int MP4_ReadBox_avcC( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1085 MP4_Box_data_avcC_t *p_avcC;
1088 MP4_READBOX_ENTER( MP4_Box_data_avcC_t );
1089 p_avcC = p_box->data.p_avcC;
1091 p_avcC->i_avcC = i_read;
1092 p_avcC->p_avcC = malloc( p_avcC->i_avcC );
1093 memcpy( p_avcC->p_avcC, p_peek, i_read );
1095 MP4_GET1BYTE( p_avcC->i_version );
1096 MP4_GET1BYTE( p_avcC->i_profile );
1097 MP4_GET1BYTE( p_avcC->i_profile_compatibility );
1098 MP4_GET1BYTE( p_avcC->i_level );
1099 MP4_GET1BYTE( p_avcC->i_reserved1 );
1100 p_avcC->i_length_size = (p_avcC->i_reserved1&0x03) + 1;
1101 p_avcC->i_reserved1 >>= 2;
1103 MP4_GET1BYTE( p_avcC->i_reserved2 );
1104 p_avcC->i_sps = p_avcC->i_reserved2&0x1f;
1105 p_avcC->i_reserved2 >>= 5;
1107 if( p_avcC->i_sps > 0 )
1109 p_avcC->i_sps_length = malloc( p_avcC->i_sps * sizeof( uint16_t ) );
1110 p_avcC->sps = malloc( p_avcC->i_sps * sizeof( uint8_t* ) );
1112 for( i = 0; i < p_avcC->i_sps; i++ )
1114 MP4_GET2BYTES( p_avcC->i_sps_length[i] );
1115 p_avcC->sps[i] = malloc( p_avcC->i_sps_length[i] );
1116 memcpy( p_avcC->sps[i], p_peek, p_avcC->i_sps_length[i] );
1118 p_peek += p_avcC->i_sps_length[i];
1119 i_read -= p_avcC->i_sps_length[i];
1123 MP4_GET1BYTE( p_avcC->i_pps );
1124 if( p_avcC->i_pps > 0 )
1126 p_avcC->i_pps_length = malloc( p_avcC->i_pps * sizeof( uint16_t ) );
1127 p_avcC->pps = malloc( p_avcC->i_pps * sizeof( uint8_t* ) );
1129 for( i = 0; i < p_avcC->i_pps; i++ )
1131 MP4_GET2BYTES( p_avcC->i_pps_length[i] );
1132 p_avcC->pps[i] = malloc( p_avcC->i_pps_length[i] );
1133 memcpy( p_avcC->pps[i], p_peek, p_avcC->i_pps_length[i] );
1135 p_peek += p_avcC->i_pps_length[i];
1136 i_read -= p_avcC->i_pps_length[i];
1140 msg_Dbg( p_stream->s,
1141 "read box: \"avcC\" version=%d profile=0x%x level=0x%x lengh size=%d sps=%d pps=%d",
1142 p_avcC->i_version, p_avcC->i_profile, p_avcC->i_level,
1143 p_avcC->i_length_size,
1144 p_avcC->i_sps, p_avcC->i_pps );
1145 for( i = 0; i < p_avcC->i_sps; i++ )
1147 msg_Dbg( p_stream->s, " - sps[%d] length=%d",
1148 i, p_avcC->i_sps_length[i] );
1150 for( i = 0; i < p_avcC->i_pps; i++ )
1152 msg_Dbg( p_stream->s, " - pps[%d] length=%d",
1153 i, p_avcC->i_pps_length[i] );
1157 MP4_READBOX_EXIT( 1 );
1160 static void MP4_FreeBox_avcC( MP4_Box_t *p_box )
1162 MP4_Box_data_avcC_t *p_avcC = p_box->data.p_avcC;
1165 for( i = 0; i < p_avcC->i_sps; i++ )
1167 FREE( p_avcC->sps[i] );
1169 for( i = 0; i < p_avcC->i_pps; i++ )
1171 FREE( p_avcC->pps[i] );
1173 if( p_avcC->i_sps > 0 ) FREE( p_avcC->sps );
1174 if( p_avcC->i_pps > 0 ) FREE( p_avcC->pps );
1177 static int MP4_ReadBox_sample_soun( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1181 MP4_READBOX_ENTER( MP4_Box_data_sample_soun_t );
1182 p_box->data.p_sample_soun->p_qt_description = NULL;
1184 /* Sanity check needed because the "wave" box does also contain an
1185 * "mp4a" box that we don't understand. */
1189 MP4_READBOX_EXIT( 1 );
1192 for( i = 0; i < 6 ; i++ )
1194 MP4_GET1BYTE( p_box->data.p_sample_soun->i_reserved1[i] );
1197 MP4_GET2BYTES( p_box->data.p_sample_soun->i_data_reference_index );
1200 * XXX hack -> produce a copy of the nearly complete chunk
1204 p_box->data.p_sample_soun->i_qt_description = i_read;
1205 p_box->data.p_sample_soun->p_qt_description = malloc( i_read );
1206 memcpy( p_box->data.p_sample_soun->p_qt_description, p_peek, i_read );
1210 p_box->data.p_sample_soun->i_qt_description = 0;
1211 p_box->data.p_sample_soun->p_qt_description = NULL;
1214 MP4_GET2BYTES( p_box->data.p_sample_soun->i_qt_version );
1215 MP4_GET2BYTES( p_box->data.p_sample_soun->i_qt_revision_level );
1216 MP4_GET4BYTES( p_box->data.p_sample_soun->i_qt_vendor );
1218 MP4_GET2BYTES( p_box->data.p_sample_soun->i_channelcount );
1219 MP4_GET2BYTES( p_box->data.p_sample_soun->i_samplesize );
1220 MP4_GET2BYTES( p_box->data.p_sample_soun->i_predefined );
1221 MP4_GET2BYTES( p_box->data.p_sample_soun->i_reserved3 );
1222 MP4_GET2BYTES( p_box->data.p_sample_soun->i_sampleratehi );
1223 MP4_GET2BYTES( p_box->data.p_sample_soun->i_sampleratelo );
1225 if( p_box->data.p_sample_soun->i_qt_version == 1 &&
1229 MP4_GET4BYTES( p_box->data.p_sample_soun->i_sample_per_packet );
1230 MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_packet );
1231 MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_frame );
1232 MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_sample );
1235 msg_Dbg( p_stream->s,
1236 "read box: \"soun\" qt3+ sample/packet=%d bytes/packet=%d "
1237 "bytes/frame=%d bytes/sample=%d",
1238 p_box->data.p_sample_soun->i_sample_per_packet,
1239 p_box->data.p_sample_soun->i_bytes_per_packet,
1240 p_box->data.p_sample_soun->i_bytes_per_frame,
1241 p_box->data.p_sample_soun->i_bytes_per_sample );
1243 MP4_SeekStream( p_stream, p_box->i_pos +
1244 MP4_BOX_HEADERSIZE( p_box ) + 44 );
1248 p_box->data.p_sample_soun->i_sample_per_packet = 0;
1249 p_box->data.p_sample_soun->i_bytes_per_packet = 0;
1250 p_box->data.p_sample_soun->i_bytes_per_frame = 0;
1251 p_box->data.p_sample_soun->i_bytes_per_sample = 0;
1253 msg_Dbg( p_stream->s, "read box: \"soun\" mp4 or qt1/2 (rest="I64Fd")",
1255 MP4_SeekStream( p_stream, p_box->i_pos +
1256 MP4_BOX_HEADERSIZE( p_box ) + 28 );
1259 if( p_box->i_type == FOURCC_drms )
1261 p_box->data.p_sample_soun->p_drms =
1262 drms_alloc( p_stream->s->p_vlc->psz_homedir );
1264 if( p_box->data.p_sample_soun->p_drms == NULL )
1266 msg_Err( p_stream->s, "drms_alloc() failed" );
1270 MP4_ReadBoxContainerRaw( p_stream, p_box ); /* esds */
1273 msg_Dbg( p_stream->s, "read box: \"soun\" in stsd channel %d "
1274 "sample size %d sampl rate %f",
1275 p_box->data.p_sample_soun->i_channelcount,
1276 p_box->data.p_sample_soun->i_samplesize,
1277 (float)p_box->data.p_sample_soun->i_sampleratehi +
1278 (float)p_box->data.p_sample_soun->i_sampleratelo / 65536 );
1281 MP4_READBOX_EXIT( 1 );
1285 static void MP4_FreeBox_sample_soun( MP4_Box_t *p_box )
1287 FREE( p_box->data.p_sample_soun->p_qt_description );
1289 if( p_box->i_type == FOURCC_drms )
1291 if( p_box->data.p_sample_soun->p_drms )
1293 drms_free( p_box->data.p_sample_soun->p_drms );
1299 static int MP4_ReadBox_sample_vide( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1303 MP4_READBOX_ENTER( MP4_Box_data_sample_vide_t );
1305 for( i = 0; i < 6 ; i++ )
1307 MP4_GET1BYTE( p_box->data.p_sample_vide->i_reserved1[i] );
1310 MP4_GET2BYTES( p_box->data.p_sample_vide->i_data_reference_index );
1313 * XXX hack -> produce a copy of the nearly complete chunk
1317 p_box->data.p_sample_vide->i_qt_image_description = i_read;
1318 p_box->data.p_sample_vide->p_qt_image_description = malloc( i_read );
1319 memcpy( p_box->data.p_sample_vide->p_qt_image_description,
1324 p_box->data.p_sample_vide->i_qt_image_description = 0;
1325 p_box->data.p_sample_vide->p_qt_image_description = NULL;
1328 MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_version );
1329 MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_revision_level );
1330 MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_vendor );
1332 MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_temporal_quality );
1333 MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_spatial_quality );
1335 MP4_GET2BYTES( p_box->data.p_sample_vide->i_width );
1336 MP4_GET2BYTES( p_box->data.p_sample_vide->i_height );
1338 MP4_GET4BYTES( p_box->data.p_sample_vide->i_horizresolution );
1339 MP4_GET4BYTES( p_box->data.p_sample_vide->i_vertresolution );
1341 MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_data_size );
1342 MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_frame_count );
1344 memcpy( &p_box->data.p_sample_vide->i_compressorname, p_peek, 32 );
1345 p_peek += 32; i_read -= 32;
1347 MP4_GET2BYTES( p_box->data.p_sample_vide->i_depth );
1348 MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_color_table );
1350 MP4_SeekStream( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 78);
1351 MP4_ReadBoxContainerRaw( p_stream, p_box );
1354 msg_Dbg( p_stream->s, "read box: \"vide\" in stsd %dx%d depth %d",
1355 p_box->data.p_sample_vide->i_width,
1356 p_box->data.p_sample_vide->i_height,
1357 p_box->data.p_sample_vide->i_depth );
1360 MP4_READBOX_EXIT( 1 );
1364 static void MP4_FreeBox_sample_vide( MP4_Box_t *p_box )
1366 FREE( p_box->data.p_sample_vide->p_qt_image_description );
1370 static int MP4_ReadBox_sample_text( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1374 MP4_READBOX_ENTER( MP4_Box_data_sample_text_t );
1376 for( i = 0; i < 6 ; i++ )
1378 MP4_GET1BYTE( p_box->data.p_sample_text->i_reserved1[i] );
1380 MP4_GET2BYTES( p_box->data.p_sample_text->i_data_reference_index );
1382 MP4_GET4BYTES( p_box->data.p_sample_text->i_display_flags );
1383 MP4_GET4BYTES( p_box->data.p_sample_text->i_justification );
1385 MP4_GET2BYTES( p_box->data.p_sample_text->i_background_color[0] );
1386 MP4_GET2BYTES( p_box->data.p_sample_text->i_background_color[1] );
1387 MP4_GET2BYTES( p_box->data.p_sample_text->i_background_color[2] );
1389 MP4_GET8BYTES( p_box->data.p_sample_text->i_text_box );
1390 MP4_GET8BYTES( p_box->data.p_sample_text->i_reserved2 );
1392 MP4_GET2BYTES( p_box->data.p_sample_text->i_font_number );
1393 MP4_GET2BYTES( p_box->data.p_sample_text->i_font_face );
1395 MP4_GET2BYTES( p_box->data.p_sample_text->i_reserved3 );
1397 MP4_GET2BYTES( p_box->data.p_sample_text->i_foreground_color[0] );
1398 MP4_GET2BYTES( p_box->data.p_sample_text->i_foreground_color[1] );
1399 MP4_GET2BYTES( p_box->data.p_sample_text->i_foreground_color[2] );
1402 p_box->data.p_sample_text->psz_text_name = malloc( i + 1 );
1403 memcpy( p_box->data.p_sample_text->psz_text_name, p_peek, i );
1404 p_box->data.p_sample_text->psz_text_name[i] = '\0';
1407 msg_Dbg( p_stream->s, "read box: \"text\" in stsd text name=%s",
1408 p_box->data.p_sample_text->psz_text_name );
1410 MP4_READBOX_EXIT( 1 );
1414 /* We can't easily call it, and anyway ~ 20 bytes lost isn't a real problem */
1415 static void MP4_FreeBox_sample_text( MP4_Box_t *p_box )
1417 FREE( p_box->data.p_sample_text->psz_text_name );
1422 static int MP4_ReadBox_stsd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1425 MP4_READBOX_ENTER( MP4_Box_data_stsd_t );
1427 MP4_GETVERSIONFLAGS( p_box->data.p_stsd );
1429 MP4_GET4BYTES( p_box->data.p_stsd->i_entry_count );
1431 MP4_SeekStream( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 8 );
1433 MP4_ReadBoxContainerRaw( p_stream, p_box );
1436 msg_Dbg( p_stream->s, "read box: \"stsd\" entry-count %d",
1437 p_box->data.p_stsd->i_entry_count );
1440 MP4_READBOX_EXIT( 1 );
1444 static int MP4_ReadBox_stsz( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1448 MP4_READBOX_ENTER( MP4_Box_data_stsz_t );
1450 MP4_GETVERSIONFLAGS( p_box->data.p_stsz );
1452 MP4_GET4BYTES( p_box->data.p_stsz->i_sample_size );
1454 MP4_GET4BYTES( p_box->data.p_stsz->i_sample_count );
1456 p_box->data.p_stsz->i_entry_size =
1457 calloc( sizeof( uint32_t ), p_box->data.p_stsz->i_sample_count );
1459 if( !p_box->data.p_stsz->i_sample_size )
1461 for( i=0; (i<p_box->data.p_stsz->i_sample_count)&&(i_read >= 4 ); i++ )
1463 MP4_GET4BYTES( p_box->data.p_stsz->i_entry_size[i] );
1468 msg_Dbg( p_stream->s, "read box: \"stsz\" sample-size %d sample-count %d",
1469 p_box->data.p_stsz->i_sample_size,
1470 p_box->data.p_stsz->i_sample_count );
1473 MP4_READBOX_EXIT( 1 );
1476 static void MP4_FreeBox_stsz( MP4_Box_t *p_box )
1478 FREE( p_box->data.p_stsz->i_entry_size );
1481 static int MP4_ReadBox_stsc( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1485 MP4_READBOX_ENTER( MP4_Box_data_stsc_t );
1487 MP4_GETVERSIONFLAGS( p_box->data.p_stsc );
1489 MP4_GET4BYTES( p_box->data.p_stsc->i_entry_count );
1491 p_box->data.p_stsc->i_first_chunk =
1492 calloc( sizeof( uint32_t ), p_box->data.p_stsc->i_entry_count );
1493 p_box->data.p_stsc->i_samples_per_chunk =
1494 calloc( sizeof( uint32_t ), p_box->data.p_stsc->i_entry_count );
1495 p_box->data.p_stsc->i_sample_description_index =
1496 calloc( sizeof( uint32_t ), p_box->data.p_stsc->i_entry_count );
1498 for( i = 0; (i < p_box->data.p_stsc->i_entry_count )&&( i_read >= 12 );i++ )
1500 MP4_GET4BYTES( p_box->data.p_stsc->i_first_chunk[i] );
1501 MP4_GET4BYTES( p_box->data.p_stsc->i_samples_per_chunk[i] );
1502 MP4_GET4BYTES( p_box->data.p_stsc->i_sample_description_index[i] );
1506 msg_Dbg( p_stream->s, "read box: \"stsc\" entry-count %d",
1507 p_box->data.p_stsc->i_entry_count );
1510 MP4_READBOX_EXIT( 1 );
1513 static void MP4_FreeBox_stsc( MP4_Box_t *p_box )
1515 FREE( p_box->data.p_stsc->i_first_chunk );
1516 FREE( p_box->data.p_stsc->i_samples_per_chunk );
1517 FREE( p_box->data.p_stsc->i_sample_description_index );
1520 static int MP4_ReadBox_stco_co64( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1524 MP4_READBOX_ENTER( MP4_Box_data_co64_t );
1526 MP4_GETVERSIONFLAGS( p_box->data.p_co64 );
1528 MP4_GET4BYTES( p_box->data.p_co64->i_entry_count );
1530 p_box->data.p_co64->i_chunk_offset =
1531 calloc( sizeof( uint64_t ), p_box->data.p_co64->i_entry_count );
1533 for( i = 0; i < p_box->data.p_co64->i_entry_count; i++ )
1535 if( p_box->i_type == FOURCC_stco )
1541 MP4_GET4BYTES( p_box->data.p_co64->i_chunk_offset[i] );
1549 MP4_GET8BYTES( p_box->data.p_co64->i_chunk_offset[i] );
1554 msg_Dbg( p_stream->s, "read box: \"co64\" entry-count %d",
1555 p_box->data.p_co64->i_entry_count );
1558 MP4_READBOX_EXIT( 1 );
1561 static void MP4_FreeBox_stco_co64( MP4_Box_t *p_box )
1563 FREE( p_box->data.p_co64->i_chunk_offset );
1566 static int MP4_ReadBox_stss( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1570 MP4_READBOX_ENTER( MP4_Box_data_stss_t );
1572 MP4_GETVERSIONFLAGS( p_box->data.p_stss );
1574 MP4_GET4BYTES( p_box->data.p_stss->i_entry_count );
1576 p_box->data.p_stss->i_sample_number =
1577 calloc( sizeof( uint32_t ), p_box->data.p_stss->i_entry_count );
1579 for( i = 0; (i < p_box->data.p_stss->i_entry_count )&&( i_read >= 4 ); i++ )
1582 MP4_GET4BYTES( p_box->data.p_stss->i_sample_number[i] );
1583 /* XXX in libmp4 sample begin at 0 */
1584 p_box->data.p_stss->i_sample_number[i]--;
1588 msg_Dbg( p_stream->s, "read box: \"stss\" entry-count %d",
1589 p_box->data.p_stss->i_entry_count );
1592 MP4_READBOX_EXIT( 1 );
1595 static void MP4_FreeBox_stss( MP4_Box_t *p_box )
1597 FREE( p_box->data.p_stss->i_sample_number )
1600 static int MP4_ReadBox_stsh( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1604 MP4_READBOX_ENTER( MP4_Box_data_stsh_t );
1606 MP4_GETVERSIONFLAGS( p_box->data.p_stsh );
1609 MP4_GET4BYTES( p_box->data.p_stsh->i_entry_count );
1611 p_box->data.p_stsh->i_shadowed_sample_number =
1612 calloc( sizeof( uint32_t ), p_box->data.p_stsh->i_entry_count );
1614 p_box->data.p_stsh->i_sync_sample_number =
1615 calloc( sizeof( uint32_t ), p_box->data.p_stsh->i_entry_count );
1618 for( i = 0; (i < p_box->data.p_stss->i_entry_count )&&( i_read >= 8 ); i++ )
1621 MP4_GET4BYTES( p_box->data.p_stsh->i_shadowed_sample_number[i] );
1622 MP4_GET4BYTES( p_box->data.p_stsh->i_sync_sample_number[i] );
1626 msg_Dbg( p_stream->s, "read box: \"stsh\" entry-count %d",
1627 p_box->data.p_stsh->i_entry_count );
1629 MP4_READBOX_EXIT( 1 );
1632 static void MP4_FreeBox_stsh( MP4_Box_t *p_box )
1634 FREE( p_box->data.p_stsh->i_shadowed_sample_number )
1635 FREE( p_box->data.p_stsh->i_sync_sample_number )
1639 static int MP4_ReadBox_stdp( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1643 MP4_READBOX_ENTER( MP4_Box_data_stdp_t );
1645 MP4_GETVERSIONFLAGS( p_box->data.p_stdp );
1647 p_box->data.p_stdp->i_priority =
1648 calloc( sizeof( uint16_t ), i_read / 2 );
1650 for( i = 0; i < i_read / 2 ; i++ )
1653 MP4_GET2BYTES( p_box->data.p_stdp->i_priority[i] );
1657 msg_Dbg( p_stream->s, "read box: \"stdp\" entry-count "I64Fd,
1661 MP4_READBOX_EXIT( 1 );
1664 static void MP4_FreeBox_stdp( MP4_Box_t *p_box )
1666 FREE( p_box->data.p_stdp->i_priority )
1669 static int MP4_ReadBox_padb( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1673 MP4_READBOX_ENTER( MP4_Box_data_padb_t );
1675 MP4_GETVERSIONFLAGS( p_box->data.p_padb );
1678 MP4_GET4BYTES( p_box->data.p_padb->i_sample_count );
1680 p_box->data.p_padb->i_reserved1 =
1681 calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 );
1682 p_box->data.p_padb->i_pad2 =
1683 calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 );
1684 p_box->data.p_padb->i_reserved2 =
1685 calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 );
1686 p_box->data.p_padb->i_pad1 =
1687 calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 );
1690 for( i = 0; i < i_read / 2 ; i++ )
1692 p_box->data.p_padb->i_reserved1[i] = ( (*p_peek) >> 7 )&0x01;
1693 p_box->data.p_padb->i_pad2[i] = ( (*p_peek) >> 4 )&0x07;
1694 p_box->data.p_padb->i_reserved1[i] = ( (*p_peek) >> 3 )&0x01;
1695 p_box->data.p_padb->i_pad1[i] = ( (*p_peek) )&0x07;
1697 p_peek += 1; i_read -= 1;
1701 msg_Dbg( p_stream->s, "read box: \"stdp\" entry-count "I64Fd,
1705 MP4_READBOX_EXIT( 1 );
1708 static void MP4_FreeBox_padb( MP4_Box_t *p_box )
1710 FREE( p_box->data.p_padb->i_reserved1 );
1711 FREE( p_box->data.p_padb->i_pad2 );
1712 FREE( p_box->data.p_padb->i_reserved2 );
1713 FREE( p_box->data.p_padb->i_pad1 );
1716 static int MP4_ReadBox_elst( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1720 MP4_READBOX_ENTER( MP4_Box_data_padb_t );
1722 MP4_GETVERSIONFLAGS( p_box->data.p_elst );
1725 MP4_GET4BYTES( p_box->data.p_elst->i_entry_count );
1727 p_box->data.p_elst->i_segment_duration =
1728 calloc( sizeof( uint64_t ), p_box->data.p_elst->i_entry_count );
1729 p_box->data.p_elst->i_media_time =
1730 calloc( sizeof( int64_t ), p_box->data.p_elst->i_entry_count );
1731 p_box->data.p_elst->i_media_rate_integer =
1732 calloc( sizeof( uint16_t ), p_box->data.p_elst->i_entry_count );
1733 p_box->data.p_elst->i_media_rate_fraction=
1734 calloc( sizeof( uint16_t ), p_box->data.p_elst->i_entry_count );
1737 for( i = 0; i < p_box->data.p_elst->i_entry_count; i++ )
1739 if( p_box->data.p_elst->i_version == 1 )
1742 MP4_GET8BYTES( p_box->data.p_elst->i_segment_duration[i] );
1744 MP4_GET8BYTES( p_box->data.p_elst->i_media_time[i] );
1749 MP4_GET4BYTES( p_box->data.p_elst->i_segment_duration[i] );
1751 MP4_GET4BYTES( p_box->data.p_elst->i_media_time[i] );
1752 p_box->data.p_elst->i_media_time[i] = (int32_t)p_box->data.p_elst->i_media_time[i];
1755 MP4_GET2BYTES( p_box->data.p_elst->i_media_rate_integer[i] );
1756 MP4_GET2BYTES( p_box->data.p_elst->i_media_rate_fraction[i] );
1760 msg_Dbg( p_stream->s, "read box: \"elst\" entry-count "I64Fd,
1764 MP4_READBOX_EXIT( 1 );
1767 static void MP4_FreeBox_elst( MP4_Box_t *p_box )
1769 FREE( p_box->data.p_elst->i_segment_duration );
1770 FREE( p_box->data.p_elst->i_media_time );
1771 FREE( p_box->data.p_elst->i_media_rate_integer );
1772 FREE( p_box->data.p_elst->i_media_rate_fraction );
1775 static int MP4_ReadBox_cprt( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1777 unsigned int i_language;
1780 MP4_READBOX_ENTER( MP4_Box_data_cprt_t );
1782 MP4_GETVERSIONFLAGS( p_box->data.p_cprt );
1784 i_language = GetWBE( p_peek );
1785 for( i = 0; i < 3; i++ )
1787 p_box->data.p_cprt->i_language[i] =
1788 ( ( i_language >> ( (2-i)*5 ) )&0x1f ) + 0x60;
1790 p_peek += 2; i_read -= 2;
1791 MP4_GETSTRINGZ( p_box->data.p_cprt->psz_notice );
1794 msg_Dbg( p_stream->s, "read box: \"cprt\" language %c%c%c notice %s",
1795 p_box->data.p_cprt->i_language[0],
1796 p_box->data.p_cprt->i_language[1],
1797 p_box->data.p_cprt->i_language[2],
1798 p_box->data.p_cprt->psz_notice );
1801 MP4_READBOX_EXIT( 1 );
1804 static void MP4_FreeBox_cprt( MP4_Box_t *p_box )
1806 FREE( p_box->data.p_cprt->psz_notice );
1810 static int MP4_ReadBox_dcom( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1812 MP4_READBOX_ENTER( MP4_Box_data_dcom_t );
1814 MP4_GETFOURCC( p_box->data.p_dcom->i_algorithm );
1816 msg_Dbg( p_stream->s,
1817 "read box: \"dcom\" compression algorithm : %4.4s",
1818 (char*)&p_box->data.p_dcom->i_algorithm );
1820 MP4_READBOX_EXIT( 1 );
1823 static int MP4_ReadBox_cmvd( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1825 MP4_READBOX_ENTER( MP4_Box_data_cmvd_t );
1827 MP4_GET4BYTES( p_box->data.p_cmvd->i_uncompressed_size );
1829 p_box->data.p_cmvd->i_compressed_size = i_read;
1831 if( !( p_box->data.p_cmvd->p_data = malloc( i_read ) ) )
1833 msg_Dbg( p_stream->s, "read box: \"cmvd\" not enough memory to load data" );
1837 /* now copy compressed data */
1838 memcpy( p_box->data.p_cmvd->p_data,
1842 p_box->data.p_cmvd->b_compressed = 1;
1845 msg_Dbg( p_stream->s, "read box: \"cmvd\" compressed data size %d",
1846 p_box->data.p_cmvd->i_compressed_size );
1849 MP4_READBOX_EXIT( 1 );
1851 static void MP4_FreeBox_cmvd( MP4_Box_t *p_box )
1853 FREE( p_box->data.p_cmvd->p_data );
1857 static int MP4_ReadBox_cmov( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1859 MP4_Stream_t *p_stream_memory;
1870 if( !( p_box->data.p_cmov = malloc( sizeof( MP4_Box_data_cmov_t ) ) ) )
1872 msg_Err( p_stream->s, "out of memory" );
1875 memset( p_box->data.p_cmov, 0, sizeof( MP4_Box_data_cmov_t ) );
1877 if( !p_box->p_father ||
1878 ( p_box->p_father->i_type != FOURCC_moov && p_box->p_father->i_type != FOURCC_foov) )
1880 msg_Warn( p_stream->s, "Read box: \"cmov\" box alone" );
1884 if( !(i_result = MP4_ReadBoxContainer( p_stream, p_box ) ) )
1889 if( ( p_dcom = MP4_BoxGet( p_box, "dcom" ) ) == NULL ||
1890 ( p_cmvd = MP4_BoxGet( p_box, "cmvd" ) ) == NULL ||
1891 p_cmvd->data.p_cmvd->p_data == NULL )
1893 msg_Warn( p_stream->s, "read box: \"cmov\" incomplete" );
1897 if( p_dcom->data.p_dcom->i_algorithm != FOURCC_zlib )
1899 msg_Dbg( p_stream->s, "read box: \"cmov\" compression algorithm : %4.4s not supported",
1900 (char*)&p_dcom->data.p_dcom->i_algorithm );
1905 msg_Dbg( p_stream->s,
1906 "read box: \"cmov\" zlib unsupported" );
1909 /* decompress data */
1910 /* allocate a new buffer */
1911 if( !( p_data = malloc( p_cmvd->data.p_cmvd->i_uncompressed_size ) ) )
1913 msg_Err( p_stream->s,
1914 "read box: \"cmov\" not enough memory to uncompress data" );
1917 /* init default structures */
1918 z_data.next_in = p_cmvd->data.p_cmvd->p_data;
1919 z_data.avail_in = p_cmvd->data.p_cmvd->i_compressed_size;
1920 z_data.next_out = p_data;
1921 z_data.avail_out = p_cmvd->data.p_cmvd->i_uncompressed_size;
1922 z_data.zalloc = (alloc_func)Z_NULL;
1923 z_data.zfree = (free_func)Z_NULL;
1924 z_data.opaque = (voidpf)Z_NULL;
1927 if( ( i_result = inflateInit( &z_data ) ) != Z_OK )
1929 msg_Err( p_stream->s,
1930 "read box: \"cmov\" error while uncompressing data" );
1936 i_result = inflate( &z_data, Z_NO_FLUSH );
1937 if( ( i_result != Z_OK )&&( i_result != Z_STREAM_END ) )
1939 msg_Err( p_stream->s,
1940 "read box: \"cmov\" error while uncompressing data" );
1945 if( p_cmvd->data.p_cmvd->i_uncompressed_size != z_data.total_out )
1947 msg_Warn( p_stream->s,
1948 "read box: \"cmov\" uncompressing data size mismatch" );
1950 p_cmvd->data.p_cmvd->i_uncompressed_size = z_data.total_out;
1953 i_result = inflateEnd( &z_data );
1954 if( i_result != Z_OK )
1956 msg_Warn( p_stream->s,
1957 "read box: \"cmov\" error while uncompressing data (ignored)" );
1961 free( p_cmvd->data.p_cmvd->p_data );
1962 p_cmvd->data.p_cmvd->p_data = p_data;
1963 p_cmvd->data.p_cmvd->b_compressed = 0;
1965 msg_Dbg( p_stream->s,
1966 "read box: \"cmov\" box succesfully uncompressed" );
1968 /* now create a memory stream */
1969 p_stream_memory = MP4_MemoryStream( p_stream->s,
1970 p_cmvd->data.p_cmvd->i_uncompressed_size,
1971 p_cmvd->data.p_cmvd->p_data );
1973 /* and read uncompressd moov */
1974 p_box->data.p_cmov->p_moov = MP4_ReadBox( p_stream_memory, NULL );
1976 free( p_stream_memory );
1979 msg_Dbg( p_stream->s,
1980 "read box: \"cmov\" compressed movie header completed" );
1982 return( p_box->data.p_cmov->p_moov ? 1 : 0 );
1983 #endif /* HAVE_ZLIB_H */
1986 static int MP4_ReadBox_rdrf( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
1989 MP4_READBOX_ENTER( MP4_Box_data_rdrf_t );
1991 MP4_GETVERSIONFLAGS( p_box->data.p_rdrf );
1992 MP4_GETFOURCC( p_box->data.p_rdrf->i_ref_type );
1993 MP4_GET4BYTES( i_len );
1997 p_box->data.p_rdrf->psz_ref = malloc( i_len + 1);
1998 for( i = 0; i < i_len; i++ )
2000 MP4_GET1BYTE( p_box->data.p_rdrf->psz_ref[i] );
2002 p_box->data.p_rdrf->psz_ref[i_len] = '\0';
2006 p_box->data.p_rdrf->psz_ref = NULL;
2010 msg_Dbg( p_stream->s,
2011 "read box: \"rdrf\" type:%4.4s ref %s",
2012 (char*)&p_box->data.p_rdrf->i_ref_type,
2013 p_box->data.p_rdrf->psz_ref );
2016 MP4_READBOX_EXIT( 1 );
2019 static void MP4_FreeBox_rdrf( MP4_Box_t *p_box )
2021 FREE( p_box->data.p_rdrf->psz_ref )
2025 static int MP4_ReadBox_rmdr( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
2027 MP4_READBOX_ENTER( MP4_Box_data_rmdr_t );
2029 MP4_GETVERSIONFLAGS( p_box->data.p_rmdr );
2031 MP4_GET4BYTES( p_box->data.p_rmdr->i_rate );
2034 msg_Dbg( p_stream->s,
2035 "read box: \"rmdr\" rate:%d",
2036 p_box->data.p_rmdr->i_rate );
2038 MP4_READBOX_EXIT( 1 );
2041 static int MP4_ReadBox_rmqu( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
2043 MP4_READBOX_ENTER( MP4_Box_data_rmqu_t );
2045 MP4_GET4BYTES( p_box->data.p_rmqu->i_quality );
2048 msg_Dbg( p_stream->s,
2049 "read box: \"rmqu\" quality:%d",
2050 p_box->data.p_rmqu->i_quality );
2052 MP4_READBOX_EXIT( 1 );
2055 static int MP4_ReadBox_rmvc( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
2057 MP4_READBOX_ENTER( MP4_Box_data_rmvc_t );
2058 MP4_GETVERSIONFLAGS( p_box->data.p_rmvc );
2060 MP4_GETFOURCC( p_box->data.p_rmvc->i_gestaltType );
2061 MP4_GET4BYTES( p_box->data.p_rmvc->i_val1 );
2062 MP4_GET4BYTES( p_box->data.p_rmvc->i_val2 );
2063 MP4_GET2BYTES( p_box->data.p_rmvc->i_checkType );
2066 msg_Dbg( p_stream->s,
2067 "read box: \"rmvc\" gestaltType:%4.4s val1:0x%x val2:0x%x checkType:0x%x",
2068 (char*)&p_box->data.p_rmvc->i_gestaltType,
2069 p_box->data.p_rmvc->i_val1,p_box->data.p_rmvc->i_val2,
2070 p_box->data.p_rmvc->i_checkType );
2073 MP4_READBOX_EXIT( 1 );
2076 static int MP4_ReadBox_drms( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
2078 MP4_Box_t *p_drms_box = p_box;
2080 MP4_READBOX_ENTER( uint8_t );
2084 p_drms_box = p_drms_box->p_father;
2085 } while( p_drms_box && p_drms_box->i_type != FOURCC_drms );
2087 if( p_drms_box && p_drms_box->data.p_sample_soun->p_drms )
2089 if( drms_init( p_drms_box->data.p_sample_soun->p_drms,
2090 p_box->i_type, p_peek, i_read ) )
2092 msg_Err( p_stream->s, "drms_init( %4.4s ) failed",
2093 (char *)&p_box->i_type );
2095 drms_free( p_drms_box->data.p_sample_soun->p_drms );
2096 p_drms_box->data.p_sample_soun->p_drms = NULL;
2100 MP4_READBOX_EXIT( 1 );
2103 static int MP4_ReadBox_0xa9xxx( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
2105 int16_t i_length, i_dummy;
2107 MP4_READBOX_ENTER( MP4_Box_data_0xa9xxx_t );
2109 p_box->data.p_0xa9xxx->psz_text = NULL;
2111 MP4_GET2BYTES( i_length );
2112 MP4_GET2BYTES( i_dummy );
2116 if( i_length > i_read ) i_length = i_read;
2118 p_box->data.p_0xa9xxx->psz_text = malloc( i_length + 1 );
2120 memcpy( p_box->data.p_0xa9xxx->psz_text,
2122 p_box->data.p_0xa9xxx->psz_text[i_length] = '\0';
2125 msg_Dbg( p_stream->s,
2126 "read box: \"%4.4s\" text=`%s'",
2127 (char*)&p_box->i_type,
2128 p_box->data.p_0xa9xxx->psz_text );
2132 MP4_READBOX_EXIT( 1 );
2134 static void MP4_FreeBox_0xa9xxx( MP4_Box_t *p_box )
2136 FREE( p_box->data.p_0xa9xxx->psz_text );
2140 static int MP4_ReadBox_default( MP4_Stream_t *p_stream, MP4_Box_t *p_box )
2142 if( !p_box->p_father )
2146 if( p_box->p_father->i_type == FOURCC_stsd )
2148 MP4_Box_t *p_mdia = MP4_BoxGet( p_box, "../../../.." );
2151 if( p_mdia == NULL || p_mdia->i_type != FOURCC_mdia ||
2152 (p_hdlr = MP4_BoxGet( p_mdia, "hdlr" )) == NULL )
2156 switch( p_hdlr->data.p_hdlr->i_handler_type )
2159 return MP4_ReadBox_sample_soun( p_stream, p_box );
2161 return MP4_ReadBox_sample_vide( p_stream, p_box );
2163 return MP4_ReadBox_sample_text( p_stream, p_box );
2165 msg_Warn( p_stream->s,
2166 "unknown handler type in stsd (uncompletetly loaded)" );
2172 msg_Warn( p_stream->s,
2173 "unknown box type %4.4s (uncompletetly loaded)",
2174 (char*)&p_box->i_type );
2179 /**** ------------------------------------------------------------------- ****/
2180 /**** "Higher level" Functions ****/
2181 /**** ------------------------------------------------------------------- ****/
2186 int (*MP4_ReadBox_function )( MP4_Stream_t *p_stream, MP4_Box_t *p_box );
2187 void (*MP4_FreeBox_function )( MP4_Box_t *p_box );
2188 } MP4_Box_Function [] =
2191 { FOURCC_moov, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2192 { FOURCC_trak, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2193 { FOURCC_mdia, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2194 { FOURCC_moof, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2195 { FOURCC_minf, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2196 { FOURCC_stbl, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2197 { FOURCC_dinf, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2198 { FOURCC_edts, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2199 { FOURCC_udta, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2200 { FOURCC_nmhd, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2201 { FOURCC_hnti, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2202 { FOURCC_rmra, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2203 { FOURCC_rmda, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2204 { FOURCC_tref, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2205 { FOURCC_gmhd, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2206 { FOURCC_wave, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2209 { FOURCC_ftyp, MP4_ReadBox_ftyp, MP4_FreeBox_ftyp },
2210 { FOURCC_cmov, MP4_ReadBox_cmov, MP4_FreeBox_Common },
2211 { FOURCC_mvhd, MP4_ReadBox_mvhd, MP4_FreeBox_Common },
2212 { FOURCC_tkhd, MP4_ReadBox_tkhd, MP4_FreeBox_Common },
2213 { FOURCC_mdhd, MP4_ReadBox_mdhd, MP4_FreeBox_Common },
2214 { FOURCC_hdlr, MP4_ReadBox_hdlr, MP4_FreeBox_hdlr },
2215 { FOURCC_vmhd, MP4_ReadBox_vmhd, MP4_FreeBox_Common },
2216 { FOURCC_smhd, MP4_ReadBox_smhd, MP4_FreeBox_Common },
2217 { FOURCC_hmhd, MP4_ReadBox_hmhd, MP4_FreeBox_Common },
2218 { FOURCC_url, MP4_ReadBox_url, MP4_FreeBox_url },
2219 { FOURCC_urn, MP4_ReadBox_urn, MP4_FreeBox_urn },
2220 { FOURCC_dref, MP4_ReadBox_dref, MP4_FreeBox_Common },
2221 { FOURCC_stts, MP4_ReadBox_stts, MP4_FreeBox_stts },
2222 { FOURCC_ctts, MP4_ReadBox_ctts, MP4_FreeBox_ctts },
2223 { FOURCC_stsd, MP4_ReadBox_stsd, MP4_FreeBox_Common },
2224 { FOURCC_stsz, MP4_ReadBox_stsz, MP4_FreeBox_stsz },
2225 { FOURCC_stsc, MP4_ReadBox_stsc, MP4_FreeBox_stsc },
2226 { FOURCC_stco, MP4_ReadBox_stco_co64, MP4_FreeBox_stco_co64 },
2227 { FOURCC_co64, MP4_ReadBox_stco_co64, MP4_FreeBox_stco_co64 },
2228 { FOURCC_stss, MP4_ReadBox_stss, MP4_FreeBox_stss },
2229 { FOURCC_stsh, MP4_ReadBox_stsh, MP4_FreeBox_stsh },
2230 { FOURCC_stdp, MP4_ReadBox_stdp, MP4_FreeBox_stdp },
2231 { FOURCC_padb, MP4_ReadBox_padb, MP4_FreeBox_padb },
2232 { FOURCC_elst, MP4_ReadBox_elst, MP4_FreeBox_elst },
2233 { FOURCC_cprt, MP4_ReadBox_cprt, MP4_FreeBox_cprt },
2234 { FOURCC_esds, MP4_ReadBox_esds, MP4_FreeBox_esds },
2235 { FOURCC_dcom, MP4_ReadBox_dcom, MP4_FreeBox_Common },
2236 { FOURCC_cmvd, MP4_ReadBox_cmvd, MP4_FreeBox_cmvd },
2237 { FOURCC_avcC, MP4_ReadBox_avcC, MP4_FreeBox_avcC },
2239 /* Nothing to do with this box */
2240 { FOURCC_mdat, MP4_ReadBoxSkip, MP4_FreeBox_Common },
2241 { FOURCC_skip, MP4_ReadBoxSkip, MP4_FreeBox_Common },
2242 { FOURCC_free, MP4_ReadBoxSkip, MP4_FreeBox_Common },
2243 { FOURCC_wide, MP4_ReadBoxSkip, MP4_FreeBox_Common },
2246 { FOURCC_soun, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2247 { FOURCC_ms02, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2248 { FOURCC_ms11, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2249 { FOURCC_ms55, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2250 { FOURCC__mp3, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2251 { FOURCC_mp4a, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2252 { FOURCC_twos, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2253 { FOURCC_sowt, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2254 { FOURCC_QDMC, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2255 { FOURCC_QDM2, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2256 { FOURCC_ima4, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2257 { FOURCC_IMA4, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2258 { FOURCC_dvi, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2259 { FOURCC_alaw, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2260 { FOURCC_ulaw, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2261 { FOURCC_raw, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2262 { FOURCC_MAC3, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2263 { FOURCC_MAC6, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2264 { FOURCC_Qclp, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2265 { FOURCC_samr, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2266 { FOURCC_OggS, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2268 { FOURCC_vide, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2269 { FOURCC_mp4v, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2270 { FOURCC_SVQ1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2271 { FOURCC_SVQ3, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2272 { FOURCC_ZyGo, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2273 { FOURCC_DIVX, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2274 { FOURCC_XVID, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2275 { FOURCC_h263, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2276 { FOURCC_s263, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2277 { FOURCC_cvid, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2278 { FOURCC_3IV1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2279 { FOURCC_3iv1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2280 { FOURCC_3IV2, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2281 { FOURCC_3iv2, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2282 { FOURCC_3IVD, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2283 { FOURCC_3ivd, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2284 { FOURCC_3VID, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2285 { FOURCC_3vid, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2286 { FOURCC_mjpa, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2287 { FOURCC_mjpb, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2289 { FOURCC_mjqt, MP4_ReadBox_default, NULL }, /* found in mjpa/b */
2290 { FOURCC_mjht, MP4_ReadBox_default, NULL },
2292 { FOURCC_dvc, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2293 { FOURCC_dvp, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2294 { FOURCC_VP31, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2295 { FOURCC_vp31, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2296 { FOURCC_h264, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2298 { FOURCC_jpeg, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2299 { FOURCC_avc1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide },
2301 { FOURCC_mp4s, MP4_ReadBox_default, MP4_FreeBox_Common },
2303 /* XXX there is 2 box where we could find this entry stbl and tref*/
2304 { FOURCC_hint, MP4_ReadBox_default, MP4_FreeBox_Common },
2306 /* found in tref box */
2307 { FOURCC_dpnd, MP4_ReadBox_default, NULL },
2308 { FOURCC_ipir, MP4_ReadBox_default, NULL },
2309 { FOURCC_mpod, MP4_ReadBox_default, NULL },
2312 { FOURCC_rtp, MP4_ReadBox_default, NULL },
2315 { FOURCC_rdrf, MP4_ReadBox_rdrf, MP4_FreeBox_rdrf },
2316 { FOURCC_rmdr, MP4_ReadBox_rmdr, MP4_FreeBox_Common },
2317 { FOURCC_rmqu, MP4_ReadBox_rmqu, MP4_FreeBox_Common },
2318 { FOURCC_rmvc, MP4_ReadBox_rmvc, MP4_FreeBox_Common },
2320 { FOURCC_drms, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun },
2321 { FOURCC_sinf, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2322 { FOURCC_schi, MP4_ReadBoxContainer, MP4_FreeBox_Common },
2323 { FOURCC_user, MP4_ReadBox_drms, MP4_FreeBox_Common },
2324 { FOURCC_key, MP4_ReadBox_drms, MP4_FreeBox_Common },
2325 { FOURCC_iviv, MP4_ReadBox_drms, MP4_FreeBox_Common },
2326 { FOURCC_name, MP4_ReadBox_drms, MP4_FreeBox_Common },
2327 { FOURCC_priv, MP4_ReadBox_drms, MP4_FreeBox_Common },
2330 { FOURCC_0xa9nam,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2331 { FOURCC_0xa9aut,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2332 { FOURCC_0xa9cpy,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2333 { FOURCC_0xa9swr,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2334 { FOURCC_0xa9inf,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2335 { FOURCC_0xa9ART,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2336 { FOURCC_0xa9dir,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2337 { FOURCC_0xa9cmt,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2338 { FOURCC_0xa9req,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2339 { FOURCC_0xa9day,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2340 { FOURCC_0xa9des,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2341 { FOURCC_0xa9fmt,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2342 { FOURCC_0xa9prd,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2343 { FOURCC_0xa9prf,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2344 { FOURCC_0xa9src,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx },
2347 { 0, MP4_ReadBox_default, NULL }
2352 /*****************************************************************************
2353 * MP4_ReadBox : parse the actual box and the children
2354 * XXX : Do not go to the next box
2355 *****************************************************************************/
2356 static MP4_Box_t *MP4_ReadBox( MP4_Stream_t *p_stream, MP4_Box_t *p_father )
2358 MP4_Box_t *p_box = malloc( sizeof( MP4_Box_t ) );
2359 unsigned int i_index;
2361 if( !MP4_ReadBoxCommon( p_stream, p_box ) )
2363 msg_Warn( p_stream->s, "cannot read one box" );
2367 if( !p_box->i_size )
2369 msg_Dbg( p_stream->s, "found an empty box (null size)" );
2373 p_box->p_father = p_father;
2375 /* Now search function to call */
2376 for( i_index = 0; ; i_index++ )
2378 if( ( MP4_Box_Function[i_index].i_type == p_box->i_type )||
2379 ( MP4_Box_Function[i_index].i_type == 0 ) )
2385 if( !(MP4_Box_Function[i_index].MP4_ReadBox_function)( p_stream, p_box ) )
2394 /*****************************************************************************
2395 * MP4_FreeBox : free memory after read with MP4_ReadBox and all
2397 *****************************************************************************/
2398 void MP4_BoxFree( stream_t *s, MP4_Box_t *p_box )
2400 unsigned int i_index;
2408 for( p_child = p_box->p_first; p_child != NULL; )
2412 p_next = p_child->p_next;
2413 MP4_BoxFree( s, p_child );
2417 /* Now search function to call */
2418 if( p_box->data.p_data )
2420 for( i_index = 0; ; i_index++ )
2422 if( ( MP4_Box_Function[i_index].i_type == p_box->i_type )||
2423 ( MP4_Box_Function[i_index].i_type == 0 ) )
2428 if( MP4_Box_Function[i_index].MP4_FreeBox_function == NULL )
2430 /* Should not happen */
2432 "cannot free box %4.4s, type unknown",
2433 (char*)&p_box->i_type );
2437 MP4_Box_Function[i_index].MP4_FreeBox_function( p_box );
2440 free( p_box->data.p_data );
2446 /*****************************************************************************
2447 * MP4_BoxGetRoot : Parse the entire file, and create all boxes in memory
2448 *****************************************************************************
2449 * The first box is a virtual box "root" and is the father for all first
2450 * level boxes for the file, a sort of virtual contener
2451 *****************************************************************************/
2452 MP4_Box_t *MP4_BoxGetRoot( stream_t *s )
2455 MP4_Stream_t *p_stream;
2458 p_root = malloc( sizeof( MP4_Box_t ) );
2460 p_root->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
2461 p_root->i_shortsize = 1;
2462 p_root->i_size = stream_Size( s );
2463 CreateUUID( &p_root->i_uuid, p_root->i_type );
2465 p_root->data.p_data = NULL;
2466 p_root->p_father = NULL;
2467 p_root->p_first = NULL;
2468 p_root->p_last = NULL;
2469 p_root->p_next = NULL;
2471 p_stream = MP4_InputStream( s );
2473 i_result = MP4_ReadBoxContainerRaw( p_stream, p_root );
2483 /* check if there is a cmov, if so replace
2484 compressed moov by uncompressed one */
2485 if( ( ( p_moov = MP4_BoxGet( p_root, "moov" ) ) &&
2486 ( p_cmov = MP4_BoxGet( p_root, "moov/cmov" ) ) ) ||
2487 ( ( p_moov = MP4_BoxGet( p_root, "foov" ) ) &&
2488 ( p_cmov = MP4_BoxGet( p_root, "foov/cmov" ) ) ) )
2490 /* rename the compressed moov as a box to skip */
2491 p_moov->i_type = FOURCC_skip;
2493 /* get uncompressed p_moov */
2494 p_moov = p_cmov->data.p_cmov->p_moov;
2495 p_cmov->data.p_cmov->p_moov = NULL;
2497 /* make p_root father of this new moov */
2498 p_moov->p_father = p_root;
2500 /* insert this new moov box as first child of p_root */
2501 p_moov->p_next = p_child = p_root->p_first;
2502 p_root->p_first = p_moov;
2510 static void __MP4_BoxDumpStructure( stream_t *s,
2511 MP4_Box_t *p_box, unsigned int i_level )
2517 msg_Dbg( s, "dumping root Box \"%4.4s\"",
2518 (char*)&p_box->i_type );
2524 memset( str, (uint8_t)' ', 512 );
2525 for( i = 0; i < i_level; i++ )
2529 sprintf( str + i_level * 5, "+ %4.4s size %d",
2530 (char*)&p_box->i_type,
2531 (uint32_t)p_box->i_size );
2533 msg_Dbg( s, "%s", str );
2535 p_child = p_box->p_first;
2538 __MP4_BoxDumpStructure( s, p_child, i_level + 1 );
2539 p_child = p_child->p_next;
2543 void MP4_BoxDumpStructure( stream_t *s, MP4_Box_t *p_box )
2545 __MP4_BoxDumpStructure( s, p_box, 0 );
2550 /*****************************************************************************
2551 *****************************************************************************
2553 ** High level methods to acces an MP4 file
2555 *****************************************************************************
2556 *****************************************************************************/
2557 static void __get_token( char **ppsz_path, char **ppsz_token, int *pi_number )
2560 if( !*ppsz_path[0] )
2567 while( (*ppsz_path)[i_len] &&
2568 (*ppsz_path)[i_len] != '/' && (*ppsz_path)[i_len] != '[' )
2572 if( !i_len && **ppsz_path == '/' )
2576 *ppsz_token = malloc( i_len + 1 );
2578 memcpy( *ppsz_token, *ppsz_path, i_len );
2580 (*ppsz_token)[i_len] = '\0';
2582 *ppsz_path += i_len;
2584 if( **ppsz_path == '[' )
2587 *pi_number = strtol( *ppsz_path, NULL, 10 );
2588 while( **ppsz_path && **ppsz_path != ']' )
2592 if( **ppsz_path == ']' )
2601 while( **ppsz_path == '/' )
2607 static void __MP4_BoxGet( MP4_Box_t **pp_result,
2608 MP4_Box_t *p_box, char *psz_fmt, va_list args)
2618 vasprintf( &psz_path, psz_fmt, args );
2620 if( !psz_path || !psz_path[0] )
2627 // fprintf( stderr, "path:'%s'\n", psz_path );
2628 psz_fmt = psz_path; /* keep this pointer, as it need to be unallocated */
2634 __get_token( &psz_path, &psz_token, &i_number );
2635 // fprintf( stderr, "path:'%s', token:'%s' n:%d\n",
2636 // psz_path,psz_token,i_number );
2645 if( !strcmp( psz_token, "/" ) )
2648 while( p_box && p_box->i_type != VLC_FOURCC( 'r', 'o', 'o', 't' ) )
2650 p_box = p_box->p_father;
2661 if( !strcmp( psz_token, "." ) )
2666 if( !strcmp( psz_token, ".." ) )
2668 p_box = p_box->p_father;
2678 if( strlen( psz_token ) == 4 )
2681 i_fourcc = VLC_FOURCC( psz_token[0], psz_token[1],
2682 psz_token[2], psz_token[3] );
2683 p_box = p_box->p_first;
2693 if( p_box->i_type == i_fourcc )
2701 p_box = p_box->p_next;
2705 if( strlen( psz_token ) == 0 )
2707 p_box = p_box->p_first;
2722 p_box = p_box->p_next;
2727 // fprintf( stderr, "Argg malformed token \"%s\"",psz_token );
2738 /*****************************************************************************
2739 * MP4_BoxGet: find a box given a path relative to p_box
2740 *****************************************************************************
2741 * Path Format: . .. / as usual
2742 * [number] to specifie box number ex: trak[12]
2744 * ex: /moov/trak[12]
2746 *****************************************************************************/
2747 MP4_Box_t *MP4_BoxGet( MP4_Box_t *p_box, char *psz_fmt, ... )
2750 MP4_Box_t *p_result;
2752 va_start( args, psz_fmt );
2753 __MP4_BoxGet( &p_result, p_box, psz_fmt, args );
2759 /*****************************************************************************
2760 * MP4_BoxCount: count box given a path relative to p_box
2761 *****************************************************************************
2762 * Path Format: . .. / as usual
2763 * [number] to specifie box number ex: trak[12]
2765 * ex: /moov/trak[12]
2767 *****************************************************************************/
2768 int MP4_BoxCount( MP4_Box_t *p_box, char *psz_fmt, ... )
2772 MP4_Box_t *p_result, *p_next;
2774 va_start( args, psz_fmt );
2775 __MP4_BoxGet( &p_result, p_box, psz_fmt, args );
2783 for( p_next = p_result->p_next; p_next != NULL; p_next = p_next->p_next)
2785 if( p_next->i_type == p_result->i_type)