aboutsummaryrefslogtreecommitdiffstats
path: root/mp4ff/mp4atom.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--mp4ff/mp4atom.c781
1 files changed, 0 insertions, 781 deletions
diff --git a/mp4ff/mp4atom.c b/mp4ff/mp4atom.c
deleted file mode 100644
index b75a3da7f..000000000
--- a/mp4ff/mp4atom.c
+++ /dev/null
@@ -1,781 +0,0 @@
-/*
-** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
-** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-**
-** Any non-GPL usage of this software or parts of this software is strictly
-** forbidden.
-**
-** Commercial non-GPL licensing of this software is possible.
-** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
-**
-** $Id: mp4atom.c,v 1.17 2004/01/11 15:52:18 menno Exp $
-**/
-
-#include <stdlib.h>
-#include "mp4ffint.h"
-
-#include "drms.h"
-
-/* parse atom header size */
-static int32_t mp4ff_atom_get_size(const int8_t *data)
-{
- uint32_t result;
- uint32_t a, b, c, d;
-
- a = (uint8_t)data[0];
- b = (uint8_t)data[1];
- c = (uint8_t)data[2];
- d = (uint8_t)data[3];
-
- result = (a<<24) | (b<<16) | (c<<8) | d;
- //if (result > 0 && result < 8) result = 8;
-
- return (int32_t)result;
-}
-
-/* comnapre 2 atom names, returns 1 for equal, 0 for unequal */
-static int32_t mp4ff_atom_compare(const int8_t a1, const int8_t b1, const int8_t c1, const int8_t d1,
- const int8_t a2, const int8_t b2, const int8_t c2, const int8_t d2)
-{
- if (a1 == a2 && b1 == b2 && c1 == c2 && d1 == d2)
- return 1;
- else
- return 0;
-}
-
-static uint8_t mp4ff_atom_name_to_type(const int8_t a, const int8_t b,
- const int8_t c, const int8_t d)
-{
- if (a == 'm')
- {
- if (mp4ff_atom_compare(a,b,c,d, 'm','o','o','v'))
- return ATOM_MOOV;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','i','n','f'))
- return ATOM_MINF;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','d','i','a'))
- return ATOM_MDIA;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','d','a','t'))
- return ATOM_MDAT;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','d','h','d'))
- return ATOM_MDHD;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','v','h','d'))
- return ATOM_MVHD;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','p','4','a'))
- return ATOM_MP4A;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','p','4','v'))
- return ATOM_MP4V;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','p','4','s'))
- return ATOM_MP4S;
- else if (mp4ff_atom_compare(a,b,c,d, 'm','e','t','a'))
- return ATOM_META;
- } else if (a == 't') {
- if (mp4ff_atom_compare(a,b,c,d, 't','r','a','k'))
- return ATOM_TRAK;
- else if (mp4ff_atom_compare(a,b,c,d, 't','k','h','d'))
- return ATOM_TKHD;
- else if (mp4ff_atom_compare(a,b,c,d, 't','r','e','f'))
- return ATOM_TREF;
- else if (mp4ff_atom_compare(a,b,c,d, 't','r','k','n'))
- return ATOM_TRACK;
- else if (mp4ff_atom_compare(a,b,c,d, 't','m','p','o'))
- return ATOM_TEMPO;
- } else if (a == 's') {
- if (mp4ff_atom_compare(a,b,c,d, 's','t','b','l'))
- return ATOM_STBL;
- else if (mp4ff_atom_compare(a,b,c,d, 's','m','h','d'))
- return ATOM_SMHD;
- else if (mp4ff_atom_compare(a,b,c,d, 's','t','s','d'))
- return ATOM_STSD;
- else if (mp4ff_atom_compare(a,b,c,d, 's','t','t','s'))
- return ATOM_STTS;
- else if (mp4ff_atom_compare(a,b,c,d, 's','t','c','o'))
- return ATOM_STCO;
- else if (mp4ff_atom_compare(a,b,c,d, 's','t','s','c'))
- return ATOM_STSC;
- else if (mp4ff_atom_compare(a,b,c,d, 's','t','s','z'))
- return ATOM_STSZ;
- else if (mp4ff_atom_compare(a,b,c,d, 's','t','z','2'))
- return ATOM_STZ2;
- else if (mp4ff_atom_compare(a,b,c,d, 's','k','i','p'))
- return ATOM_SKIP;
- else if (mp4ff_atom_compare(a,b,c,d, 's','i','n','f'))
- return ATOM_SINF;
- else if (mp4ff_atom_compare(a,b,c,d, 's','c','h','i'))
- return ATOM_SCHI;
- } else if (a == '©') {
- if (mp4ff_atom_compare(a,b,c,d, '©','n','a','m'))
- return ATOM_TITLE;
- else if (mp4ff_atom_compare(a,b,c,d, '©','A','R','T'))
- return ATOM_ARTIST;
- else if (mp4ff_atom_compare(a,b,c,d, '©','w','r','t'))
- return ATOM_WRITER;
- else if (mp4ff_atom_compare(a,b,c,d, '©','a','l','b'))
- return ATOM_ALBUM;
- else if (mp4ff_atom_compare(a,b,c,d, '©','d','a','y'))
- return ATOM_DATE;
- else if (mp4ff_atom_compare(a,b,c,d, '©','t','o','o'))
- return ATOM_TOOL;
- else if (mp4ff_atom_compare(a,b,c,d, '©','c','m','t'))
- return ATOM_COMMENT;
- else if (mp4ff_atom_compare(a,b,c,d, '©','g','e','n'))
- return ATOM_GENRE1;
- }
-
- if (mp4ff_atom_compare(a,b,c,d, 'e','d','t','s'))
- return ATOM_EDTS;
- else if (mp4ff_atom_compare(a,b,c,d, 'e','s','d','s'))
- return ATOM_ESDS;
- else if (mp4ff_atom_compare(a,b,c,d, 'f','t','y','p'))
- return ATOM_FTYP;
- else if (mp4ff_atom_compare(a,b,c,d, 'f','r','e','e'))
- return ATOM_FREE;
- else if (mp4ff_atom_compare(a,b,c,d, 'h','m','h','d'))
- return ATOM_HMHD;
- else if (mp4ff_atom_compare(a,b,c,d, 'v','m','h','d'))
- return ATOM_VMHD;
- else if (mp4ff_atom_compare(a,b,c,d, 'u','d','t','a'))
- return ATOM_UDTA;
- else if (mp4ff_atom_compare(a,b,c,d, 'i','l','s','t'))
- return ATOM_ILST;
- else if (mp4ff_atom_compare(a,b,c,d, 'n','a','m','e'))
- return ATOM_NAME;
- else if (mp4ff_atom_compare(a,b,c,d, 'd','a','t','a'))
- return ATOM_DATA;
- else if (mp4ff_atom_compare(a,b,c,d, 'd','i','s','k'))
- return ATOM_DISC;
- else if (mp4ff_atom_compare(a,b,c,d, 'g','n','r','e'))
- return ATOM_GENRE2;
- else if (mp4ff_atom_compare(a,b,c,d, 'c','o','v','r'))
- return ATOM_COVER;
- else if (mp4ff_atom_compare(a,b,c,d, 'c','p','i','l'))
- return ATOM_COMPILATION;
- else if (mp4ff_atom_compare(a,b,c,d, 'c','t','t','s'))
- return ATOM_CTTS;
- else if (mp4ff_atom_compare(a,b,c,d, 'd','r','m','s'))
- return ATOM_DRMS;
- else if (mp4ff_atom_compare(a,b,c,d, 'f','r','m','a'))
- return ATOM_FRMA;
- else if (mp4ff_atom_compare(a,b,c,d, 'p','r','i','v'))
- return ATOM_PRIV;
- else if (mp4ff_atom_compare(a,b,c,d, 'i','v','i','v'))
- return ATOM_IVIV;
- else
- return ATOM_UNKNOWN;
-}
-
-/* read atom header, return atom size, atom size is with header included */
-uint64_t mp4ff_atom_read_header(mp4ff_t *f, uint8_t *atom_type, uint8_t *header_size)
-{
- uint64_t size;
- int32_t ret;
- int8_t atom_header[8];
-
- ret = mp4ff_read_data(f, atom_header, 8);
- if (ret != 8)
- return 0;
-
- size = mp4ff_atom_get_size(atom_header);
- *header_size = 8;
-
- /* check for 64 bit atom size */
- if (size == 1)
- {
- *header_size = 16;
- size = mp4ff_read_int64(f);
- }
-
- //printf("%c%c%c%c\n", atom_header[4], atom_header[5], atom_header[6], atom_header[7]);
-
- *atom_type = mp4ff_atom_name_to_type(atom_header[4], atom_header[5], atom_header[6], atom_header[7]);
-
- return size;
-}
-
-static int32_t mp4ff_read_stsz(mp4ff_t *f)
-{
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
- f->track[f->total_tracks - 1]->stsz_sample_size = mp4ff_read_int32(f);
- f->track[f->total_tracks - 1]->stsz_sample_count = mp4ff_read_int32(f);
-
- if (f->track[f->total_tracks - 1]->stsz_sample_size == 0)
- {
- int32_t i;
- f->track[f->total_tracks - 1]->stsz_table =
- (int32_t*)malloc(f->track[f->total_tracks - 1]->stsz_sample_count*sizeof(int32_t));
-
- for (i = 0; i < f->track[f->total_tracks - 1]->stsz_sample_count; i++)
- {
- f->track[f->total_tracks - 1]->stsz_table[i] = mp4ff_read_int32(f);
- }
- }
-
- return 0;
-}
-
-static int32_t mp4ff_read_esds(mp4ff_t *f)
-{
- uint8_t tag;
- uint32_t temp;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
-
- /* get and verify ES_DescrTag */
- tag = mp4ff_read_char(f);
- if (tag == 0x03)
- {
- /* read length */
- if (mp4ff_read_mp4_descr_length(f) < 5 + 15)
- {
- return 1;
- }
- /* skip 3 bytes */
- mp4ff_read_int24(f);
- } else {
- /* skip 2 bytes */
- mp4ff_read_int16(f);
- }
-
- /* get and verify DecoderConfigDescrTab */
- if (mp4ff_read_char(f) != 0x04)
- {
- return 1;
- }
-
- /* read length */
- temp = mp4ff_read_mp4_descr_length(f);
- if (temp < 13) return 1;
-
- f->track[f->total_tracks - 1]->audioType = mp4ff_read_char(f);
- mp4ff_read_int32(f);//0x15000414 ????
- f->track[f->total_tracks - 1]->maxBitrate = mp4ff_read_int32(f);
- f->track[f->total_tracks - 1]->avgBitrate = mp4ff_read_int32(f);
-
- /* get and verify DecSpecificInfoTag */
- if (mp4ff_read_char(f) != 0x05)
- {
- return 1;
- }
-
- /* read length */
- f->track[f->total_tracks - 1]->decoderConfigLen = mp4ff_read_mp4_descr_length(f);
-
- if (f->track[f->total_tracks - 1]->decoderConfig)
- free(f->track[f->total_tracks - 1]->decoderConfig);
- f->track[f->total_tracks - 1]->decoderConfig = malloc(f->track[f->total_tracks - 1]->decoderConfigLen);
- if (f->track[f->total_tracks - 1]->decoderConfig)
- {
- mp4ff_read_data(f, f->track[f->total_tracks - 1]->decoderConfig, f->track[f->total_tracks - 1]->decoderConfigLen);
- } else {
- f->track[f->total_tracks - 1]->decoderConfigLen = 0;
- }
-
- /* will skip the remainder of the atom */
- return 0;
-}
-
-static int32_t mp4ff_read_mp4a(mp4ff_t *f)
-{
- uint64_t size;
- int32_t i;
- uint8_t atom_type = 0;
- uint8_t header_size = 0;
-
- for (i = 0; i < 6; i++)
- {
- mp4ff_read_char(f); /* reserved */
- }
- /* data_reference_index */ mp4ff_read_int16(f);
-
- mp4ff_read_int32(f); /* reserved */
- mp4ff_read_int32(f); /* reserved */
-
- f->track[f->total_tracks - 1]->channelCount = mp4ff_read_int16(f);
- f->track[f->total_tracks - 1]->sampleSize = mp4ff_read_int16(f);
-
- mp4ff_read_int16(f);
- mp4ff_read_int16(f);
-
- f->track[f->total_tracks - 1]->sampleRate = mp4ff_read_int16(f);
-
- mp4ff_read_int16(f);
-
- size = mp4ff_atom_read_header(f, &atom_type, &header_size);
- if (atom_type == ATOM_ESDS)
- {
- mp4ff_read_esds(f);
- }
-
- return 0;
-}
-
-#ifdef ITUNES_DRM
-static int32_t mp4ff_read_drms(mp4ff_t *f, uint64_t skip)
-{
- uint64_t size;
- int32_t i;
- uint8_t atom_type = 0;
- uint8_t header_size = 0;
- uint32_t drms_user_key[4];
-
- if (drms_get_user_key(NULL, drms_user_key) == 0)
- {
- f->track[f->total_tracks - 1]->p_drms = drms_alloc();
-
- drms_init( f->track[f->total_tracks - 1]->p_drms,
- DRMS_INIT_UKEY, (uint8_t *)drms_user_key,
- sizeof(drms_user_key) );
- }
-
- for (i = 0; i < 6; i++)
- {
- mp4ff_read_char(f); /* reserved */
- }
- /* data_reference_index */ mp4ff_read_int16(f);
-
- mp4ff_read_int32(f); /* reserved */
- mp4ff_read_int32(f); /* reserved */
-
- f->track[f->total_tracks - 1]->channelCount = mp4ff_read_int16(f);
- f->track[f->total_tracks - 1]->sampleSize = mp4ff_read_int16(f);
-
- mp4ff_read_int16(f);
- mp4ff_read_int16(f);
-
- f->track[f->total_tracks - 1]->sampleRate = mp4ff_read_int16(f);
-
- mp4ff_read_int16(f);
-
- size = mp4ff_atom_read_header(f, &atom_type, &header_size);
- if (atom_type == ATOM_ESDS)
- {
- mp4ff_read_esds(f);
- }
- mp4ff_set_position(f, skip+size+28);
-
- size = mp4ff_atom_read_header(f, &atom_type, &header_size);
- if (atom_type == ATOM_SINF)
- {
- parse_sub_atoms(f, size-header_size);
- }
-
- return 0;
-}
-
-static int32_t mp4ff_read_frma(mp4ff_t *f)
-{
- uint8_t atom_type;
- int8_t type[4];
-
- mp4ff_read_data(f, type, 4);
-
- atom_type = mp4ff_atom_name_to_type(type[0], type[1], type[2], type[3]);
-
- if (atom_type == ATOM_MP4A)
- {
- f->track[f->total_tracks - 1]->type = TRACK_AUDIO;
- } else if (atom_type == ATOM_MP4V) {
- f->track[f->total_tracks - 1]->type = TRACK_VIDEO;
- } else if (atom_type == ATOM_MP4S) {
- f->track[f->total_tracks - 1]->type = TRACK_SYSTEM;
- } else {
- f->track[f->total_tracks - 1]->type = TRACK_UNKNOWN;
- }
-
- return 0;
-}
-
-static int32_t mp4ff_read_name(mp4ff_t *f, uint64_t size)
-{
- uint8_t *data = malloc(size);
- mp4ff_read_data(f, data, size);
-
- if (f->track[f->total_tracks - 1]->p_drms != NULL)
- {
- drms_init(f->track[f->total_tracks - 1]->p_drms,
- DRMS_INIT_NAME, data, strlen(data) );
- }
-
- if (data)
- free(data);
-
- return 0;
-}
-
-static int32_t mp4ff_read_priv(mp4ff_t *f, uint64_t size)
-{
- uint8_t *data = malloc(size);
- mp4ff_read_data(f, data, size);
-
- if (f->track[f->total_tracks - 1]->p_drms != 0)
- {
- drms_init(f->track[f->total_tracks - 1]->p_drms,
- DRMS_INIT_PRIV, data, size );
- }
-
- if (data)
- free(data);
-
- return 0;
-}
-
-static int32_t mp4ff_read_iviv(mp4ff_t *f, uint64_t size)
-{
- uint8_t *data = malloc(size);
- mp4ff_read_data(f, data, size);
-
- if (f->track[f->total_tracks - 1]->p_drms != 0)
- {
- drms_init(f->track[f->total_tracks - 1]->p_drms,
- DRMS_INIT_IVIV, data, sizeof(uint32_t) * 4 );
- }
-
- if (data)
- free(data);
-
- return 0;
-}
-#endif
-
-static int32_t mp4ff_read_stsd(mp4ff_t *f)
-{
- int32_t i;
- uint8_t header_size = 0;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
-
- f->track[f->total_tracks - 1]->stsd_entry_count = mp4ff_read_int32(f);
-
- for (i = 0; i < f->track[f->total_tracks - 1]->stsd_entry_count; i++)
- {
- uint64_t skip = mp4ff_position(f);
- uint64_t size;
- uint8_t atom_type = 0;
- size = mp4ff_atom_read_header(f, &atom_type, &header_size);
- skip += size;
-
- if (atom_type == ATOM_MP4A)
- {
- f->track[f->total_tracks - 1]->type = TRACK_AUDIO;
- mp4ff_read_mp4a(f);
- } else if (atom_type == ATOM_MP4V) {
- f->track[f->total_tracks - 1]->type = TRACK_VIDEO;
- } else if (atom_type == ATOM_MP4S) {
- f->track[f->total_tracks - 1]->type = TRACK_SYSTEM;
-#ifdef ITUNES_DRM
- } else if (atom_type == ATOM_DRMS) {
- // track type is read from the "frma" atom
- f->track[f->total_tracks - 1]->type = TRACK_UNKNOWN;
- mp4ff_read_drms(f, skip-size+header_size);
-#endif
- } else {
- f->track[f->total_tracks - 1]->type = TRACK_UNKNOWN;
- }
-
- mp4ff_set_position(f, skip);
- }
-
- return 0;
-}
-
-static int32_t mp4ff_read_stsc(mp4ff_t *f)
-{
- int32_t i;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
- f->track[f->total_tracks - 1]->stsc_entry_count = mp4ff_read_int32(f);
-
- f->track[f->total_tracks - 1]->stsc_first_chunk =
- (int32_t*)malloc(f->track[f->total_tracks - 1]->stsc_entry_count*sizeof(int32_t));
- f->track[f->total_tracks - 1]->stsc_samples_per_chunk =
- (int32_t*)malloc(f->track[f->total_tracks - 1]->stsc_entry_count*sizeof(int32_t));
- f->track[f->total_tracks - 1]->stsc_sample_desc_index =
- (int32_t*)malloc(f->track[f->total_tracks - 1]->stsc_entry_count*sizeof(int32_t));
-
- for (i = 0; i < f->track[f->total_tracks - 1]->stsc_entry_count; i++)
- {
- f->track[f->total_tracks - 1]->stsc_first_chunk[i] = mp4ff_read_int32(f);
- f->track[f->total_tracks - 1]->stsc_samples_per_chunk[i] = mp4ff_read_int32(f);
- f->track[f->total_tracks - 1]->stsc_sample_desc_index[i] = mp4ff_read_int32(f);
- }
-
- return 0;
-}
-
-static int32_t mp4ff_read_stco(mp4ff_t *f)
-{
- int32_t i;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
- f->track[f->total_tracks - 1]->stco_entry_count = mp4ff_read_int32(f);
-
- f->track[f->total_tracks - 1]->stco_chunk_offset =
- (int32_t*)malloc(f->track[f->total_tracks - 1]->stco_entry_count*sizeof(int32_t));
-
- for (i = 0; i < f->track[f->total_tracks - 1]->stco_entry_count; i++)
- {
- f->track[f->total_tracks - 1]->stco_chunk_offset[i] = mp4ff_read_int32(f);
- }
-
- return 0;
-}
-
-static int32_t mp4ff_read_ctts(mp4ff_t *f)
-{
- int32_t i;
- mp4ff_track_t * p_track = f->track[f->total_tracks - 1];
-
- if (p_track->ctts_entry_count) return 0;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
- p_track->ctts_entry_count = mp4ff_read_int32(f);
-
- p_track->ctts_sample_count = (int32_t*)malloc(p_track->ctts_entry_count * sizeof(int32_t));
- p_track->ctts_sample_offset = (int32_t*)malloc(p_track->ctts_entry_count * sizeof(int32_t));
-
- if (p_track->ctts_sample_count == 0 || p_track->ctts_sample_offset == 0)
- {
- if (p_track->ctts_sample_count) {free(p_track->ctts_sample_count);p_track->ctts_sample_count=0;}
- if (p_track->ctts_sample_offset) {free(p_track->ctts_sample_offset);p_track->ctts_sample_offset=0;}
- p_track->ctts_entry_count = 0;
- return 0;
- }
- else
- {
- for (i = 0; i < f->track[f->total_tracks - 1]->ctts_entry_count; i++)
- {
- p_track->ctts_sample_count[i] = mp4ff_read_int32(f);
- p_track->ctts_sample_offset[i] = mp4ff_read_int32(f);
- }
- return 1;
- }
-}
-
-static int32_t mp4ff_read_stts(mp4ff_t *f)
-{
- int32_t i;
- mp4ff_track_t * p_track = f->track[f->total_tracks - 1];
-
- if (p_track->stts_entry_count) return 0;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
- p_track->stts_entry_count = mp4ff_read_int32(f);
-
- p_track->stts_sample_count = (int32_t*)malloc(p_track->stts_entry_count * sizeof(int32_t));
- p_track->stts_sample_delta = (int32_t*)malloc(p_track->stts_entry_count * sizeof(int32_t));
-
- if (p_track->stts_sample_count == 0 || p_track->stts_sample_delta == 0)
- {
- if (p_track->stts_sample_count) {free(p_track->stts_sample_count);p_track->stts_sample_count=0;}
- if (p_track->stts_sample_delta) {free(p_track->stts_sample_delta);p_track->stts_sample_delta=0;}
- p_track->stts_entry_count = 0;
- return 0;
- }
- else
- {
- for (i = 0; i < f->track[f->total_tracks - 1]->stts_entry_count; i++)
- {
- p_track->stts_sample_count[i] = mp4ff_read_int32(f);
- p_track->stts_sample_delta[i] = mp4ff_read_int32(f);
- }
- return 1;
- }
-}
-
-static int32_t mp4ff_read_mvhd(mp4ff_t *f)
-{
- int32_t i;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
- /* creation_time */ mp4ff_read_int32(f);
- /* modification_time */ mp4ff_read_int32(f);
- f->time_scale = mp4ff_read_int32(f);
- f->duration = mp4ff_read_int32(f);
- /* preferred_rate */ mp4ff_read_int32(f); /*mp4ff_read_fixed32(f);*/
- /* preferred_volume */ mp4ff_read_int16(f); /*mp4ff_read_fixed16(f);*/
- for (i = 0; i < 10; i++)
- {
- /* reserved */ mp4ff_read_char(f);
- }
- for (i = 0; i < 9; i++)
- {
- mp4ff_read_int32(f); /* matrix */
- }
- /* preview_time */ mp4ff_read_int32(f);
- /* preview_duration */ mp4ff_read_int32(f);
- /* poster_time */ mp4ff_read_int32(f);
- /* selection_time */ mp4ff_read_int32(f);
- /* selection_duration */ mp4ff_read_int32(f);
- /* current_time */ mp4ff_read_int32(f);
- /* next_track_id */ mp4ff_read_int32(f);
-
- return 0;
-}
-
-#if 0
-static int32_t mp4ff_read_tkhd(mp4ff_t *f)
-{
- uint8_t version;
- uint32_t flags;
- version = mp4ff_read_char(f); /* version */
- flags = mp4ff_read_int24(f); /* flags */
- if (version==1)
- {
- mp4ff_read_int64(f);//creation-time
- mp4ff_read_int64(f);//modification-time
- mp4ff_read_int32(f);//track-id
- mp4ff_read_int32(f);//reserved
- f->track[f->total_tracks - 1]->duration = mp4ff_read_int64(f);//duration
- }
- else //version == 0
- {
- mp4ff_read_int32(f);//creation-time
- mp4ff_read_int32(f);//modification-time
- mp4ff_read_int32(f);//track-id
- mp4ff_read_int32(f);//reserved
- f->track[f->total_tracks - 1]->duration = mp4ff_read_int32(f);//duration
- if (f->track[f->total_tracks - 1]->duration == 0xFFFFFFFF)
- f->track[f->total_tracks - 1]->duration = 0xFFFFFFFFFFFFFFFF;
-
- }
- mp4ff_read_int32(f);//reserved
- mp4ff_read_int32(f);//reserved
- mp4ff_read_int16(f);//layer
- mp4ff_read_int16(f);//pre-defined
- mp4ff_read_int16(f);//volume
- mp4ff_read_int16(f);//reserved
-
- //matrix
- mp4ff_read_int32(f); mp4ff_read_int32(f); mp4ff_read_int32(f);
- mp4ff_read_int32(f); mp4ff_read_int32(f); mp4ff_read_int32(f);
- mp4ff_read_int32(f); mp4ff_read_int32(f); mp4ff_read_int32(f);
- mp4ff_read_int32(f);//width
- mp4ff_read_int32(f);//height
- return 1;
-}
-#endif
-
-static int32_t mp4ff_read_mdhd(mp4ff_t *f)
-{
- uint32_t version;
-
- version = mp4ff_read_int32(f);
- if (version==1)
- {
- mp4ff_read_int64(f);//creation-time
- mp4ff_read_int64(f);//modification-time
- f->track[f->total_tracks - 1]->timeScale = mp4ff_read_int32(f);//timescale
- f->track[f->total_tracks - 1]->duration = mp4ff_read_int64(f);//duration
- }
- else //version == 0
- {
- uint32_t temp;
-
- mp4ff_read_int32(f);//creation-time
- mp4ff_read_int32(f);//modification-time
- f->track[f->total_tracks - 1]->timeScale = mp4ff_read_int32(f);//timescale
- temp = mp4ff_read_int32(f);
- f->track[f->total_tracks - 1]->duration = (temp == (uint32_t)(-1)) ? (uint64_t)(-1) : (uint64_t)(temp);
- }
- mp4ff_read_int16(f);
- mp4ff_read_int16(f);
- return 1;
-}
-#ifdef USE_TAGGING
-static int32_t mp4ff_read_meta(mp4ff_t *f, const uint64_t size)
-{
- uint64_t subsize, sumsize = 0;
- uint8_t atom_type;
- uint8_t header_size = 0;
-
- mp4ff_read_char(f); /* version */
- mp4ff_read_int24(f); /* flags */
-
- while (sumsize < (size-12))
- {
- subsize = mp4ff_atom_read_header(f, &atom_type, &header_size);
- if (atom_type == ATOM_ILST)
- {
- mp4ff_parse_metadata(f, (uint32_t)(subsize-(header_size+4)));
- } else {
- mp4ff_set_position(f, mp4ff_position(f)+subsize-header_size);
- }
- sumsize += subsize;
- }
-
- return 0;
-}
-#endif
-
-int32_t mp4ff_atom_read(mp4ff_t *f, const int32_t size, const uint8_t atom_type)
-{
- uint64_t dest_position = mp4ff_position(f)+size-8;
- if (atom_type == ATOM_STSZ)
- {
- /* sample size box */
- mp4ff_read_stsz(f);
- } else if (atom_type == ATOM_STTS) {
- /* time to sample box */
- mp4ff_read_stts(f);
- } else if (atom_type == ATOM_CTTS) {
- /* composition offset box */
- mp4ff_read_ctts(f);
- } else if (atom_type == ATOM_STSC) {
- /* sample to chunk box */
- mp4ff_read_stsc(f);
- } else if (atom_type == ATOM_STCO) {
- /* chunk offset box */
- mp4ff_read_stco(f);
- } else if (atom_type == ATOM_STSD) {
- /* sample description box */
- mp4ff_read_stsd(f);
- } else if (atom_type == ATOM_MVHD) {
- /* movie header box */
- mp4ff_read_mvhd(f);
- } else if (atom_type == ATOM_MDHD) {
- /* track header */
- mp4ff_read_mdhd(f);
-#ifdef ITUNES_DRM
- } else if (atom_type == ATOM_FRMA) {
- /* DRM track format */
- mp4ff_read_frma(f);
- } else if (atom_type == ATOM_IVIV) {
- mp4ff_read_iviv(f, size-8);
- } else if (atom_type == ATOM_NAME) {
- mp4ff_read_name(f, size-8);
- } else if (atom_type == ATOM_PRIV) {
- mp4ff_read_priv(f, size-8);
-#endif
-#ifdef USE_TAGGING
- } else if (atom_type == ATOM_META) {
- /* iTunes Metadata box */
- mp4ff_read_meta(f, size);
-#endif
- }
-
- mp4ff_set_position(f, dest_position);
-
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 19:08:17 +0000