1 /*****************************************************************************
2 * libmp4.h : LibMP4 library for mp4 module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: libmp4.h,v 1.6 2003/02/18 23:34:14 gbazin Exp $
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 #define FOURCC_uuid VLC_FOURCC( 'u', 'u', 'i', 'd' )
25 #define FOURCC_ftyp VLC_FOURCC( 'f', 't', 'y', 'p' )
26 #define FOURCC_moov VLC_FOURCC( 'm', 'o', 'o', 'v' )
27 #define FOURCC_cmov VLC_FOURCC( 'c', 'm', 'o', 'v' )
28 #define FOURCC_dcom VLC_FOURCC( 'd', 'c', 'o', 'm' )
29 #define FOURCC_cmvd VLC_FOURCC( 'c', 'm', 'v', 'd' )
31 #define FOURCC_moof VLC_FOURCC( 'm', 'o', 'o', 'f' )
32 #define FOURCC_mdat VLC_FOURCC( 'm', 'd', 'a', 't' )
33 #define FOURCC_skip VLC_FOURCC( 's', 'k', 'i', 'p' )
34 #define FOURCC_free VLC_FOURCC( 'f', 'r', 'e', 'e' )
35 #define FOURCC_udta VLC_FOURCC( 'u', 'd', 't', 'a' )
36 #define FOURCC_wide VLC_FOURCC( 'w', 'i', 'd', 'e' )
38 #define FOURCC_trak VLC_FOURCC( 't', 'r', 'a', 'k' )
39 #define FOURCC_mvhd VLC_FOURCC( 'm', 'v', 'h', 'd' )
40 #define FOURCC_tkhd VLC_FOURCC( 't', 'k', 'h', 'd' )
41 #define FOURCC_tref VLC_FOURCC( 't', 'r', 'e', 'f' )
42 #define FOURCC_mdia VLC_FOURCC( 'm', 'd', 'i', 'a' )
43 #define FOURCC_mdhd VLC_FOURCC( 'm', 'd', 'h', 'd' )
44 #define FOURCC_hdlr VLC_FOURCC( 'h', 'd', 'l', 'r' )
45 #define FOURCC_minf VLC_FOURCC( 'm', 'i', 'n', 'f' )
46 #define FOURCC_vmhd VLC_FOURCC( 'v', 'm', 'h', 'd' )
47 #define FOURCC_smhd VLC_FOURCC( 's', 'm', 'h', 'd' )
48 #define FOURCC_hmhd VLC_FOURCC( 'h', 'm', 'h', 'd' )
49 #define FOURCC_dinf VLC_FOURCC( 'd', 'i', 'n', 'f' )
50 #define FOURCC_url VLC_FOURCC( 'u', 'r', 'l', ' ' )
51 #define FOURCC_urn VLC_FOURCC( 'u', 'r', 'n', ' ' )
52 #define FOURCC_dref VLC_FOURCC( 'd', 'r', 'e', 'f' )
53 #define FOURCC_stbl VLC_FOURCC( 's', 't', 'b', 'l' )
54 #define FOURCC_stts VLC_FOURCC( 's', 't', 't', 's' )
55 #define FOURCC_ctts VLC_FOURCC( 'c', 't', 't', 's' )
56 #define FOURCC_stsd VLC_FOURCC( 's', 't', 's', 'd' )
57 #define FOURCC_stsz VLC_FOURCC( 's', 't', 's', 'z' )
58 #define FOURCC_stz2 VLC_FOURCC( 's', 't', 'z', '2' )
59 #define FOURCC_stsc VLC_FOURCC( 's', 't', 's', 'c' )
60 #define FOURCC_stco VLC_FOURCC( 's', 't', 'c', 'o' )
61 #define FOURCC_co64 VLC_FOURCC( 'c', 'o', '6', '4' )
62 #define FOURCC_stss VLC_FOURCC( 's', 't', 's', 's' )
63 #define FOURCC_stsh VLC_FOURCC( 's', 't', 's', 'h' )
64 #define FOURCC_stdp VLC_FOURCC( 's', 't', 'd', 'p' )
65 #define FOURCC_padb VLC_FOURCC( 'p', 'a', 'd', 'b' )
66 #define FOURCC_edts VLC_FOURCC( 'e', 'd', 't', 's' )
67 #define FOURCC_elst VLC_FOURCC( 'e', 'l', 's', 't' )
68 #define FOURCC_udta VLC_FOURCC( 'u', 'd', 't', 'a' )
69 #define FOURCC_mvex VLC_FOURCC( 'm', 'v', 'e', 'x' )
70 #define FOURCC_trex VLC_FOURCC( 't', 'r', 'e', 'x' )
71 #define FOURCC_mfhd VLC_FOURCC( 'm', 'f', 'h', 'd' )
72 #define FOURCC_traf VLC_FOURCC( 't', 'r', 'a', 'f' )
73 #define FOURCC_tfhd VLC_FOURCC( 't', 'f', 'h', 'd' )
74 #define FOURCC_trun VLC_FOURCC( 't', 'r', 'u', 'n' )
75 #define FOURCC_cprt VLC_FOURCC( 'c', 'p', 'r', 't' )
76 #define FOURCC_iods VLC_FOURCC( 'i', 'o', 'd', 's' )
78 #define FOURCC_nmhd VLC_FOURCC( 'n', 'm', 'h', 'd' )
79 #define FOURCC_mp4v VLC_FOURCC( 'm', 'p', '4', 'v' )
80 #define FOURCC_mp4a VLC_FOURCC( 'm', 'p', '4', 'a' )
81 #define FOURCC_mp4s VLC_FOURCC( 'm', 'p', '4', 's' )
82 #define FOURCC_vide VLC_FOURCC( 'v', 'i', 'd', 'e' )
83 #define FOURCC_soun VLC_FOURCC( 's', 'o', 'u', 'n' )
84 #define FOURCC_hint VLC_FOURCC( 'h', 'i', 'n', 't' )
86 #define FOURCC_dpnd VLC_FOURCC( 'd', 'p', 'n', 'd' )
87 #define FOURCC_ipir VLC_FOURCC( 'i', 'p', 'i', 'r' )
88 #define FOURCC_mpod VLC_FOURCC( 'm', 'p', 'o', 'd' )
89 #define FOURCC_hnti VLC_FOURCC( 'h', 'n', 't', 'i' )
90 #define FOURCC_rtp VLC_FOURCC( 'r', 't', 'p', ' ' )
92 #define FOURCC_isom VLC_FOURCC( 'i', 's', 'o', 'm' )
93 #define FOURCC_esds VLC_FOURCC( 'e', 's', 'd', 's' )
95 #define FOURCC_zlib VLC_FOURCC( 'z', 'l', 'i', 'b' )
96 #define FOURCC_SVQ1 VLC_FOURCC( 'S', 'V', 'Q', '1' )
97 #define FOURCC__mp3 VLC_FOURCC( '.', 'm', 'p', '3' )
98 #define FOURCC_ms55 VLC_FOURCC( 'm', 's', 0x0, 0x55 )
99 #define FOURCC_3IV1 VLC_FOURCC( '3', 'I', 'V', '1' )
100 #define FOURCC_3IV2 VLC_FOURCC( '3', 'I', 'V', '2' )
101 #define FOURCC_h263 VLC_FOURCC( 'h', '2', '6', '3' )
102 #define FOURCC_DIVX VLC_FOURCC( 'D', 'I', 'V', 'X' )
103 #define FOURCC_cvid VLC_FOURCC( 'c', 'v', 'i', 'd' )
104 #define FOURCC_mjpa VLC_FOURCC( 'm', 'j', 'p', 'a' )
105 #define FOURCC_mjpb VLC_FOURCC( 'm', 'j', 'q', 't' )
106 #define FOURCC_mjqt VLC_FOURCC( 'm', 'j', 'h', 't' )
107 #define FOURCC_mjht VLC_FOURCC( 'm', 'j', 'p', 'b' )
108 #define FOURCC_dvc VLC_FOURCC( 'd', 'v', 'c', ' ' )
109 #define FOURCC_dvp VLC_FOURCC( 'd', 'v', 'p', ' ' )
110 #define FOURCC_twos VLC_FOURCC( 't', 'w', 'o', 's' )
112 #define FOURCC_jpeg VLC_FOURCC( 'j', 'p', 'e', 'g' )
115 #define FOURCC_rmra VLC_FOURCC( 'r', 'm', 'r', 'a' )
116 #define FOURCC_rmda VLC_FOURCC( 'r', 'm', 'd', 'a' )
117 #define FOURCC_rdrf VLC_FOURCC( 'r', 'd', 'r', 'f' )
118 #define FOURCC_rmdr VLC_FOURCC( 'r', 'm', 'd', 'r' )
119 #define FOURCC_rmvc VLC_FOURCC( 'r', 'm', 'v', 'c' )
120 #define FOURCC_rmcd VLC_FOURCC( 'r', 'm', 'c', 'd' )
121 #define FOURCC_rmqu VLC_FOURCC( 'r', 'm', 'q', 'u' )
122 #define FOURCC_alis VLC_FOURCC( 'a', 'l', 'i', 's' )
124 /* Do you want some debug information on all read boxes ? */
125 #define MP4_VERBOSE 1
127 /* memory stream and file stream object */
129 typedef struct MP4_Stream_s
131 int b_memory; /* do we uses a memory buffer */
133 input_thread_t *p_input;
135 off_t i_start; /* in the buffer position for memory stream */
144 /* uuid Universal Unique IDentifiers */
145 typedef struct UUID_s
150 /* specific structure for all boxes */
152 typedef struct MP4_Box_data_ftyp_s
154 uint32_t i_major_brand;
155 uint32_t i_minor_version;
157 uint32_t i_compatible_brands_count;
158 uint32_t *i_compatible_brands;
160 } MP4_Box_data_ftyp_t;
162 typedef struct MP4_Box_data_mvhd_s
167 uint64_t i_creation_time;
168 uint64_t i_modification_time;
169 uint32_t i_timescale;
175 uint32_t i_reserved2[2];
177 uint32_t i_predefined[6];
178 uint32_t i_next_track_id;
180 } MP4_Box_data_mvhd_t;
182 #define MP4_TRACK_ENABLED 0x000001
183 #define MP4_TRACK_IN_MOVIE 0x000002
184 #define MP4_TRACK_IN_PREVIEW 0x000004
185 typedef struct MP4_Box_data_tkhd_s
190 uint64_t i_creation_time;
191 uint64_t i_modification_time;
196 uint32_t i_reserved2[2];
198 int16_t i_predefined;
201 uint16_t i_reserved3;
206 } MP4_Box_data_tkhd_t;
208 typedef struct MP4_Box_data_mdhd_s
213 uint64_t i_creation_time;
214 uint64_t i_modification_time;
215 uint32_t i_timescale;
218 /* one bit for pad */
219 /* unsigned int(5)[3] language difference with 0x60*/
220 unsigned char i_language[3];
221 uint16_t i_predefined;
223 } MP4_Box_data_mdhd_t;
225 typedef struct MP4_Box_data_hdlr_s
230 uint32_t i_predefined;
231 uint32_t i_handler_type; /* "vide" "soun" "hint" "odsm"
232 "crsm" "sdsm" "m7sm" "ocsm"
235 unsigned char *psz_name; /* in UTF-8 */
237 } MP4_Box_data_hdlr_t;
239 typedef struct MP4_Box_data_vmhd_s
244 int16_t i_graphics_mode;
245 int16_t i_opcolor[3];
247 } MP4_Box_data_vmhd_t;
249 typedef struct MP4_Box_data_smhd_s
257 } MP4_Box_data_smhd_t;
259 typedef struct MP4_Box_data_hmhd_s
264 uint16_t i_max_PDU_size;
265 uint16_t i_avg_PDU_size;
266 uint32_t i_max_bitrate;
267 uint32_t i_avg_bitrate;
270 } MP4_Box_data_hmhd_t;
272 typedef struct MP4_Box_data_url_s
277 unsigned char *psz_location;
279 } MP4_Box_data_url_t;
281 typedef struct MP4_Box_data_urn_s
286 unsigned char *psz_name;
287 unsigned char *psz_location;
289 } MP4_Box_data_urn_t;
291 typedef struct MP4_Box_data_dref_s
296 uint32_t i_entry_count;
297 /* XXX it's also a container with i_entry_count entry */
298 } MP4_Box_data_dref_t;
300 typedef struct MP4_Box_data_stts_s
305 uint32_t i_entry_count;
306 uint32_t *i_sample_count; /* these are array */
307 int32_t *i_sample_delta;
309 } MP4_Box_data_stts_t;
311 typedef struct MP4_Box_data_ctts_s
316 uint32_t i_entry_count;
318 uint32_t *i_sample_count; /* these are array */
319 int32_t *i_sample_offset;
321 } MP4_Box_data_ctts_t;
324 typedef struct MP4_Box_data_sample_soun_s
326 uint8_t i_reserved1[6];
327 uint16_t i_data_reference_index;
329 uint32_t i_reserved2[2];
330 uint16_t i_channelcount;
331 uint16_t i_samplesize;
332 uint16_t i_predefined;
333 uint16_t i_reserved3;
334 uint16_t i_sampleratehi; /* timescale of track */
335 uint16_t i_sampleratelo;
337 } MP4_Box_data_sample_soun_t;
339 typedef struct MP4_Box_data_sample_vide_s
341 uint8_t i_reserved1[6];
342 uint16_t i_data_reference_index;
344 uint16_t i_predefined1;
345 uint16_t i_reserved2;
346 uint32_t i_predefined2[3];
351 uint32_t i_horizresolution;
352 uint32_t i_vertresolution;
354 uint32_t i_reserved3;
355 uint16_t i_predefined3;
357 uint8_t i_compressorname[32];
360 int16_t i_predefined4;
362 } MP4_Box_data_sample_vide_t;
364 typedef struct MP4_Box_data_sample_hint_s
366 uint8_t i_reserved1[6];
367 uint16_t i_data_reference_index;
371 } MP4_Box_data_sample_hint_t;
373 typedef struct MP4_Box_data_moviehintinformation_rtp_s
375 uint32_t i_description_format;
376 unsigned char *psz_text;
378 } MP4_Box_data_moviehintinformation_rtp_t;
382 typedef struct MP4_Box_data_stsd_s
387 uint32_t i_entry_count;
389 /* it contains SampleEntry handled as if it was Box */
391 } MP4_Box_data_stsd_t;
394 typedef struct MP4_Box_data_stsz_s
399 uint32_t i_sample_size;
400 uint32_t i_sample_count;
402 uint32_t *i_entry_size; /* array , empty if i_sample_size != 0 */
404 } MP4_Box_data_stsz_t;
406 typedef struct MP4_Box_data_stz2_s
411 uint32_t i_sample_size; /* 24 bits */
412 uint8_t i_field_size;
413 uint32_t i_sample_count;
415 uint32_t *i_entry_size; /* array: unsigned int(i_field_size) entry_size */
417 } MP4_Box_data_stz2_t;
419 typedef struct MP4_Box_data_stsc_s
424 uint32_t i_entry_count;
426 uint32_t *i_first_chunk; /* theses are arrays */
427 uint32_t *i_samples_per_chunk;
428 uint32_t *i_sample_description_index;
430 } MP4_Box_data_stsc_t;
433 typedef struct MP4_Box_data_co64_s
438 uint32_t i_entry_count;
440 uint64_t *i_chunk_offset;
442 } MP4_Box_data_co64_t;
445 typedef struct MP4_Box_data_stss_s
450 uint32_t i_entry_count;
452 uint32_t *i_sample_number;
454 } MP4_Box_data_stss_t;
456 typedef struct MP4_Box_data_stsh_s
461 uint32_t i_entry_count;
463 uint32_t *i_shadowed_sample_number;
464 uint32_t *i_sync_sample_number;
466 } MP4_Box_data_stsh_t;
468 typedef struct MP4_Box_data_stdp_s
473 uint16_t *i_priority;
475 } MP4_Box_data_stdp_t;
477 typedef struct MP4_Box_data_padb_s
482 uint32_t i_sample_count;
484 uint16_t *i_reserved1; /* 1bit */
485 uint16_t *i_pad2; /* 3bits */
486 uint16_t *i_reserved2; /* 1bit */
487 uint16_t *i_pad1; /* 3bits */
490 } MP4_Box_data_padb_t;
493 typedef struct MP4_Box_data_elst_s
498 uint32_t i_entry_count;
500 uint64_t *i_segment_duration;
501 int64_t *i_media_time;
502 uint16_t *i_media_rate_integer;
503 uint16_t *i_media_rate_fraction;
506 } MP4_Box_data_elst_t;
508 typedef struct MP4_Box_data_cprt_s
513 unsigned char i_language[3];
515 unsigned char *psz_notice;
516 } MP4_Box_data_cprt_t;
519 /* DecoderConfigDescriptor */
520 typedef struct MP4_descriptor_decoder_config_s
522 uint8_t i_objectTypeIndication;
523 uint8_t i_streamType;
529 int i_decoder_specific_info_len;
530 uint8_t *p_decoder_specific_info;
531 /* some other stuff */
533 } MP4_descriptor_decoder_config_t;
535 typedef struct MP4_descriptor_SL_config_s
538 int i_dummy; /* ANSI C forbids empty structures */
540 } MP4_descriptor_SL_config_t;
543 typedef struct MP4_descriptor_ES_s
546 int b_stream_dependence;
549 int i_stream_priority;
551 int i_depend_on_ES_ID; /* if b_stream_dependence set */
553 unsigned char *psz_URL;
555 uint16_t i_OCR_ES_ID; /* if b_OCRstream */
556 MP4_descriptor_decoder_config_t *p_decConfigDescr;
558 MP4_descriptor_SL_config_t *p_slConfigDescr;
560 /* some other stuff ... */
562 } MP4_descriptor_ES_t;
565 typedef struct MP4_Box_data_esds_s
570 MP4_descriptor_ES_t es_descriptor;
572 } MP4_Box_data_esds_t;
575 typedef struct MP4_Box_data_dcom_s
577 uint32_t i_algorithm; /* fourcc */
579 } MP4_Box_data_dcom_t;
581 typedef struct MP4_Box_data_cmvd_s
583 uint32_t i_uncompressed_size;
584 uint32_t i_compressed_size;
586 int b_compressed; /* Set to 1 if compressed data, 0 if uncompressed */
589 } MP4_Box_data_cmvd_t;
591 typedef struct MP4_Box_data_cmov_s
593 struct MP4_Box_s *p_moov; /* uncompressed moov */
595 } MP4_Box_data_cmov_t;
597 typedef struct MP4_Box_data_rdrf_s
605 } MP4_Box_data_rdrf_t;
607 typedef struct MP4_Box_data_rmdr_s
614 } MP4_Box_data_rmdr_t;
616 typedef struct MP4_Box_data_rmvc_s
621 uint32_t i_gestaltType;
624 uint16_t i_checkType; /* 0: val1 is version min
625 1: gestalt value & val2 == val1 */
627 } MP4_Box_data_rmvc_t;
629 typedef struct MP4_Box_data_rmcd_s
635 } MP4_Box_data_rmcd_t;
637 typedef struct MP4_Box_data_rmqu_s
641 } MP4_Box_data_rmqu_t;
644 typedef struct MP4_Box_data__s
653 typedef union MP4_Box_data_s
655 MP4_Box_data_ftyp_t *p_ftyp;
656 MP4_Box_data_mvhd_t *p_mvhd;
657 MP4_Box_data_tkhd_t *p_tkhd;
658 MP4_Box_data_mdhd_t *p_mdhd;
659 MP4_Box_data_hdlr_t *p_hdlr;
660 MP4_Box_data_vmhd_t *p_vmhd;
661 MP4_Box_data_smhd_t *p_smhd;
662 MP4_Box_data_hmhd_t *p_hmhd;
663 MP4_Box_data_url_t *p_url;
664 MP4_Box_data_urn_t *p_urn;
665 MP4_Box_data_dref_t *p_dref;
666 MP4_Box_data_stts_t *p_stts;
667 MP4_Box_data_ctts_t *p_ctts;
668 MP4_Box_data_stsd_t *p_stsd;
669 MP4_Box_data_sample_vide_t *p_sample_vide;
670 MP4_Box_data_sample_soun_t *p_sample_soun;
671 MP4_Box_data_sample_hint_t *p_sample_hint;
673 MP4_Box_data_esds_t *p_esds;
675 MP4_Box_data_stsz_t *p_stsz;
676 MP4_Box_data_stz2_t *p_stz2;
677 MP4_Box_data_stsc_t *p_stsc;
678 MP4_Box_data_co64_t *p_co64;
679 MP4_Box_data_stss_t *p_stss;
680 MP4_Box_data_stsh_t *p_stsh;
681 MP4_Box_data_stdp_t *p_stdp;
682 MP4_Box_data_padb_t *p_padb;
683 MP4_Box_data_elst_t *p_elst;
684 MP4_Box_data_cprt_t *p_cprt;
686 MP4_Box_data_dcom_t *p_dcom;
687 MP4_Box_data_cmvd_t *p_cmvd;
688 MP4_Box_data_cmov_t *p_cmov;
690 MP4_Box_data_moviehintinformation_rtp_t p_moviehintinformation_rtp;
692 MP4_Box_data_rdrf_t *p_rdrf;
693 MP4_Box_data_rmdr_t *p_rmdr;
694 MP4_Box_data_rmqu_t *p_rmqu;
695 MP4_Box_data_rmvc_t *p_rmvc;
697 void *p_data; /* for unknow type */
702 /* the most basic structure */
703 typedef struct MP4_Box_s
705 off_t i_pos; /* absolute position */
708 uint32_t i_shortsize;
710 UUID_t i_uuid; /* Set if i_type == "uuid" */
712 uint64_t i_size; /* always set so use it */
714 MP4_Box_data_t data; /* union of pointers on extended data depending
715 on i_type (or i_usertype) */
717 struct MP4_Box_s *p_father; /* pointer on the father Box */
719 struct MP4_Box_s *p_first; /* pointer on the first child Box */
720 struct MP4_Box_s *p_last;
722 struct MP4_Box_s *p_next; /* pointer on the next boxes at the same level */
726 /*---------------------------------------------------------------------------*/
728 /****----------------------- High level functions ------------------------****/
730 /*---------------------------------------------------------------------------*/
732 /*****************************************************************************
733 * Function for manipulate stream easily
734 *****************************************************************************/
736 off_t MP4_TellAbsolute( input_thread_t *p_input );
737 int MP4_SeekAbsolute( input_thread_t *p_input, off_t i_pos);
738 int MP4_ReadData( input_thread_t *p_input, uint8_t *p_buff, int i_size );
740 /*****************************************************************************
741 * MP4_BoxGetRoot : Parse the entire file, and create all boxes in memory
742 *****************************************************************************
743 * The first box is a virtual box "root" and is the father for all first
746 * RETURN : 1 if succes and 0 if it failed
747 *****************************************************************************/
748 int MP4_BoxGetRoot( input_thread_t *p_input, MP4_Box_t *p_root );
750 /*****************************************************************************
751 * MP4_FreeBox : free memory allocated after read with MP4_ReadBox
752 * or MP4_BoxGetRoot, this means also children boxes
753 * XXX : all children have to be allocated by a malloc !! and
754 * p_box isn't freeing
755 *****************************************************************************/
756 void MP4_BoxFree( input_thread_t *p_input, MP4_Box_t *p_box );
758 /*****************************************************************************
759 * MP4_DumpBoxStructure: print the structure of the p_box
760 *****************************************************************************
761 * Usefull while debugging
762 *****************************************************************************/
763 void MP4_BoxDumpStructure( input_thread_t *p_input, MP4_Box_t *p_box );
766 /*****************************************************************************
767 * MP4_BoxGet: find a box given a path relative to p_box
768 *****************************************************************************
769 * Path Format: . .. / as usual
770 * [number] to specifie box number ex: trak[12]
774 *****************************************************************************/
775 MP4_Box_t *MP4_BoxGet( MP4_Box_t *p_box, char *psz_fmt, ... );
777 /*****************************************************************************
778 * MP4_BoxCount: find number of box given a path relative to p_box
779 *****************************************************************************
780 * Path Format: . .. / as usual
781 * [number] to specifie box number ex: trak[12]
785 *****************************************************************************/
786 int MP4_BoxCount( MP4_Box_t *p_box, char *psz_fmt, ... );
790 /*---------------------------------------------------------------------------*/
792 /****---------------------- Medium level functions -----------------------****/
794 /*---------------------------------------------------------------------------*/
797 /*****************************************************************************
798 * MP4_CountBox: given a box, count how many child have the requested type
799 * FIXME : support GUUID
800 *****************************************************************************/
801 int MP4_CountBox( MP4_Box_t *p_box, uint32_t i_type );
804 /*****************************************************************************
805 * MP4_FindBox: find first box with i_type child of p_box
806 * return NULL if not found
807 *****************************************************************************/
808 MP4_Box_t *MP4_FindBox( MP4_Box_t *p_box, uint32_t i_type );
811 /*****************************************************************************
812 * MP4_FindNextBox: find next box with thesame type and at the same level
814 *****************************************************************************/
815 MP4_Box_t *MP4_FindNextBox( MP4_Box_t *p_box );
817 /*****************************************************************************
818 * MP4_FindNbBox: find the box i_number
819 *****************************************************************************/
820 MP4_Box_t *MP4_FindNbBox( MP4_Box_t *p_box, uint32_t i_number );
823 /*---------------------------------------------------------------------------*/
824 /****----------------------- Lower level functions -----------------------****/
826 /****------Use them only when you known what they really do and need------****/
828 /****---------------------------------------------------------------------****/
829 /*---------------------------------------------------------------------------*/
832 /**** ------- First some function to make abstract from input -------- */
834 /****************************************************************************
835 * MP4_InputStream create an stram with an input
837 ****************************************************************************/
838 MP4_Stream_t *MP4_InputStream( input_thread_t *p_input );
840 /****************************************************************************
841 * MP4_MemoryStream create a memory stream
842 * if p_buffer == NULL, will allocate a buffer of i_size, else
843 * it uses p_buffer XXX you have to unallocate yourself !
845 ****************************************************************************/
846 MP4_Stream_t *MP4_MemoryStream( input_thread_t *p_input,
847 int i_size, uint8_t *p_buffer );
849 /****************************************************************************
850 * MP4_ReadStream read from a MP4_Stream_t
852 ****************************************************************************/
853 int MP4_ReadStream( MP4_Stream_t *p_stream, uint8_t *p_buff, int i_size );
855 /****************************************************************************
856 * MP4_PeekStream guess it ;)
858 ****************************************************************************/
859 int MP4_PeekStream( MP4_Stream_t *p_stream, uint8_t **pp_peek, int i_size );
861 /****************************************************************************
862 * MP4_TellStream give absolute position in the stream
863 * XXX for a memory stream give position from begining of the buffer
864 ****************************************************************************/
865 off_t MP4_TellStream( MP4_Stream_t *p_stream );
867 /****************************************************************************
868 * MP4_SeekStream seek in a MP4_Stream_t
870 ****************************************************************************/
871 int MP4_SeekStream( MP4_Stream_t *p_stream, off_t i_pos);
875 /*****************************************************************************
876 * MP4_ReadBox : parse the actual box and the children if they exist
878 * RETURN : 1 if succes and 0 if it failed
879 *****************************************************************************/
880 int MP4_ReadBox( MP4_Stream_t *p_stream, MP4_Box_t *p_box, MP4_Box_t *p_father );
883 /*****************************************************************************
884 * MP4_ReadBoxCommon : Load only common parameters for all boxes
885 *****************************************************************************
886 * p_box need to be an already allocated MP4_Box_t, and all data
887 * will only be peek not read
889 * RETURN : 0 if it fail, 1 otherwise
890 *****************************************************************************/
891 int MP4_ReadBoxCommon( MP4_Stream_t *p_stream, MP4_Box_t *p_box );
894 /*****************************************************************************
895 * MP4_MP4_GotoBox : Go to this particular box
896 *****************************************************************************
897 * RETURN : 0 if it fail, 1 otherwise
898 *****************************************************************************/
899 int MP4_GotoBox( MP4_Stream_t *p_stream, MP4_Box_t *p_box );
902 /*****************************************************************************
903 * MP4_MP4_NextBox : Go to the next box wiithin p_box->p_father
904 *****************************************************************************
905 * if p_box == NULL, go to the next box in witch we are( at the begining ).
906 *****************************************************************************/
907 int MP4_NextBox( MP4_Stream_t *p_stream, MP4_Box_t *p_box );