From bf769906f39d71436fb2f07e4535ac95f6029fa2 Mon Sep 17 00:00:00 2001 From: Warren Dukes Date: Wed, 17 Mar 2004 17:19:52 +0000 Subject: import mp4ff, since its not installed correctly by faad2 git-svn-id: https://svn.musicpd.org/mpd/trunk@265 09075e82-0dd4-0310-85a5-a0d7c8717e4f --- src/mp4ff/mp4atom.c | 781 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 781 insertions(+) create mode 100644 src/mp4ff/mp4atom.c (limited to 'src/mp4ff/mp4atom.c') diff --git a/src/mp4ff/mp4atom.c b/src/mp4ff/mp4atom.c new file mode 100644 index 000000000..b75a3da7f --- /dev/null +++ b/src/mp4ff/mp4atom.c @@ -0,0 +1,781 @@ +/* +** 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 +#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; +} -- cgit v1.2.3