mirror of https://git.ffmpeg.org/ffmpeg.git
2807 lines
94 KiB
C
2807 lines
94 KiB
C
/*
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* MOV demuxer
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* Copyright (c) 2001 Fabrice Bellard
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* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <limits.h>
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//#define DEBUG
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//#define MOV_EXPORT_ALL_METADATA
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#include "libavutil/intreadwrite.h"
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#include "libavutil/intfloat.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/avstring.h"
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#include "libavutil/dict.h"
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#include "avformat.h"
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#include "internal.h"
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#include "avio_internal.h"
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#include "riff.h"
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#include "isom.h"
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#include "libavcodec/get_bits.h"
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#include "id3v1.h"
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#include "mov_chan.h"
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#if CONFIG_ZLIB
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#include <zlib.h>
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#endif
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/*
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* First version by Francois Revol revol@free.fr
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* Seek function by Gael Chardon gael.dev@4now.net
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*/
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#include "qtpalette.h"
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#undef NDEBUG
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#include <assert.h>
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/* those functions parse an atom */
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/* links atom IDs to parse functions */
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typedef struct MOVParseTableEntry {
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uint32_t type;
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int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
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} MOVParseTableEntry;
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static const MOVParseTableEntry mov_default_parse_table[];
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static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
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unsigned len, const char *key)
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{
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char buf[16];
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short current, total;
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avio_rb16(pb); // unknown
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current = avio_rb16(pb);
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total = avio_rb16(pb);
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if (!total)
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snprintf(buf, sizeof(buf), "%d", current);
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else
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snprintf(buf, sizeof(buf), "%d/%d", current, total);
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av_dict_set(&c->fc->metadata, key, buf, 0);
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return 0;
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}
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static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
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unsigned len, const char *key)
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{
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char buf[16];
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/* bypass padding bytes */
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avio_r8(pb);
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avio_r8(pb);
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avio_r8(pb);
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snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
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av_dict_set(&c->fc->metadata, key, buf, 0);
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return 0;
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}
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static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
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unsigned len, const char *key)
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{
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char buf[16];
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snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
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av_dict_set(&c->fc->metadata, key, buf, 0);
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return 0;
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}
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static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
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unsigned len, const char *key)
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{
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short genre;
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char buf[20];
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avio_r8(pb); // unknown
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genre = avio_r8(pb);
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if (genre < 1 || genre > ID3v1_GENRE_MAX)
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return 0;
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snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
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av_dict_set(&c->fc->metadata, key, buf, 0);
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return 0;
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}
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static const uint32_t mac_to_unicode[128] = {
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0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
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0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
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0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
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0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
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0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
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0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
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0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
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0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
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0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
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0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
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0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
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0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
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0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
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0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
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0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
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0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
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};
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static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
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char *dst, int dstlen)
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{
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char *p = dst;
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char *end = dst+dstlen-1;
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int i;
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for (i = 0; i < len; i++) {
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uint8_t t, c = avio_r8(pb);
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if (c < 0x80 && p < end)
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*p++ = c;
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else
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PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
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}
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*p = 0;
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return p - dst;
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}
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static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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{
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#ifdef MOV_EXPORT_ALL_METADATA
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char tmp_key[5];
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#endif
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char str[1024], key2[16], language[4] = {0};
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const char *key = NULL;
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uint16_t str_size, langcode = 0;
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uint32_t data_type = 0;
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int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
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switch (atom.type) {
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case MKTAG(0xa9,'n','a','m'): key = "title"; break;
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case MKTAG(0xa9,'a','u','t'):
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case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
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case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
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case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
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case MKTAG( 'c','p','r','t'):
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case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
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case MKTAG(0xa9,'c','m','t'):
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case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
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case MKTAG(0xa9,'a','l','b'): key = "album"; break;
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case MKTAG(0xa9,'d','a','y'): key = "date"; break;
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case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
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case MKTAG( 'g','n','r','e'): key = "genre";
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parse = mov_metadata_gnre; break;
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case MKTAG(0xa9,'t','o','o'):
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case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
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case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
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case MKTAG( 'd','e','s','c'): key = "description";break;
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case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
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case MKTAG( 't','v','s','h'): key = "show"; break;
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case MKTAG( 't','v','e','n'): key = "episode_id";break;
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case MKTAG( 't','v','n','n'): key = "network"; break;
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case MKTAG( 't','r','k','n'): key = "track";
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parse = mov_metadata_track_or_disc_number; break;
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case MKTAG( 'd','i','s','k'): key = "disc";
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parse = mov_metadata_track_or_disc_number; break;
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case MKTAG( 't','v','e','s'): key = "episode_sort";
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parse = mov_metadata_int8_bypass_padding; break;
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case MKTAG( 't','v','s','n'): key = "season_number";
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parse = mov_metadata_int8_bypass_padding; break;
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case MKTAG( 's','t','i','k'): key = "media_type";
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parse = mov_metadata_int8_no_padding; break;
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case MKTAG( 'h','d','v','d'): key = "hd_video";
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parse = mov_metadata_int8_no_padding; break;
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case MKTAG( 'p','g','a','p'): key = "gapless_playback";
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parse = mov_metadata_int8_no_padding; break;
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}
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if (c->itunes_metadata && atom.size > 8) {
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int data_size = avio_rb32(pb);
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int tag = avio_rl32(pb);
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if (tag == MKTAG('d','a','t','a')) {
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data_type = avio_rb32(pb); // type
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avio_rb32(pb); // unknown
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str_size = data_size - 16;
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atom.size -= 16;
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} else return 0;
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} else if (atom.size > 4 && key && !c->itunes_metadata) {
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str_size = avio_rb16(pb); // string length
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langcode = avio_rb16(pb);
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ff_mov_lang_to_iso639(langcode, language);
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atom.size -= 4;
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} else
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str_size = atom.size;
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#ifdef MOV_EXPORT_ALL_METADATA
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if (!key) {
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snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
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key = tmp_key;
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}
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#endif
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if (!key)
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return 0;
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if (atom.size < 0)
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return AVERROR_INVALIDDATA;
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str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
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if (parse)
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parse(c, pb, str_size, key);
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else {
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if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
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mov_read_mac_string(c, pb, str_size, str, sizeof(str));
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} else {
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avio_read(pb, str, str_size);
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str[str_size] = 0;
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}
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av_dict_set(&c->fc->metadata, key, str, 0);
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if (*language && strcmp(language, "und")) {
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snprintf(key2, sizeof(key2), "%s-%s", key, language);
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av_dict_set(&c->fc->metadata, key2, str, 0);
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}
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}
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av_dlog(c->fc, "lang \"%3s\" ", language);
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av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
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key, str, (char*)&atom.type, str_size, atom.size);
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return 0;
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}
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static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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{
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int64_t start;
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int i, nb_chapters, str_len, version;
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char str[256+1];
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if ((atom.size -= 5) < 0)
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return 0;
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version = avio_r8(pb);
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avio_rb24(pb);
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if (version)
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avio_rb32(pb); // ???
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nb_chapters = avio_r8(pb);
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for (i = 0; i < nb_chapters; i++) {
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if (atom.size < 9)
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return 0;
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start = avio_rb64(pb);
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str_len = avio_r8(pb);
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if ((atom.size -= 9+str_len) < 0)
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return 0;
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avio_read(pb, str, str_len);
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str[str_len] = 0;
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avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
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}
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return 0;
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}
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static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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{
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int64_t total_size = 0;
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MOVAtom a;
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int i;
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if (atom.size < 0)
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atom.size = INT64_MAX;
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while (total_size + 8 < atom.size && !pb->eof_reached) {
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int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
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a.size = atom.size;
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a.type=0;
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if (atom.size >= 8) {
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a.size = avio_rb32(pb);
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a.type = avio_rl32(pb);
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}
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av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
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a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
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total_size += 8;
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if (a.size == 1) { /* 64 bit extended size */
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a.size = avio_rb64(pb) - 8;
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total_size += 8;
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}
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if (a.size == 0) {
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a.size = atom.size - total_size;
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if (a.size <= 8)
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break;
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}
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a.size -= 8;
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if (a.size < 0)
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break;
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a.size = FFMIN(a.size, atom.size - total_size);
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for (i = 0; mov_default_parse_table[i].type; i++)
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if (mov_default_parse_table[i].type == a.type) {
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parse = mov_default_parse_table[i].parse;
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break;
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}
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// container is user data
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if (!parse && (atom.type == MKTAG('u','d','t','a') ||
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atom.type == MKTAG('i','l','s','t')))
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parse = mov_read_udta_string;
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if (!parse) { /* skip leaf atoms data */
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avio_skip(pb, a.size);
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} else {
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int64_t start_pos = avio_tell(pb);
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int64_t left;
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int err = parse(c, pb, a);
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if (err < 0)
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return err;
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if (c->found_moov && c->found_mdat &&
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(!pb->seekable || start_pos + a.size == avio_size(pb)))
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return 0;
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left = a.size - avio_tell(pb) + start_pos;
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if (left > 0) /* skip garbage at atom end */
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avio_skip(pb, left);
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}
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total_size += a.size;
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}
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if (total_size < atom.size && atom.size < 0x7ffff)
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avio_skip(pb, atom.size - total_size);
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return 0;
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}
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static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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{
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AVStream *st;
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MOVStreamContext *sc;
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int entries, i, j;
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if (c->fc->nb_streams < 1)
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return 0;
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st = c->fc->streams[c->fc->nb_streams-1];
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sc = st->priv_data;
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avio_rb32(pb); // version + flags
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entries = avio_rb32(pb);
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if (entries >= UINT_MAX / sizeof(*sc->drefs))
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return AVERROR_INVALIDDATA;
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sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
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if (!sc->drefs)
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return AVERROR(ENOMEM);
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sc->drefs_count = entries;
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for (i = 0; i < sc->drefs_count; i++) {
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MOVDref *dref = &sc->drefs[i];
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uint32_t size = avio_rb32(pb);
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int64_t next = avio_tell(pb) + size - 4;
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if (size < 12)
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return AVERROR_INVALIDDATA;
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dref->type = avio_rl32(pb);
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avio_rb32(pb); // version + flags
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av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
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if (dref->type == MKTAG('a','l','i','s') && size > 150) {
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/* macintosh alias record */
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uint16_t volume_len, len;
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int16_t type;
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avio_skip(pb, 10);
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volume_len = avio_r8(pb);
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volume_len = FFMIN(volume_len, 27);
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avio_read(pb, dref->volume, 27);
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dref->volume[volume_len] = 0;
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av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
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avio_skip(pb, 12);
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len = avio_r8(pb);
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len = FFMIN(len, 63);
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avio_read(pb, dref->filename, 63);
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dref->filename[len] = 0;
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av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
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avio_skip(pb, 16);
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/* read next level up_from_alias/down_to_target */
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dref->nlvl_from = avio_rb16(pb);
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dref->nlvl_to = avio_rb16(pb);
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av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
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dref->nlvl_from, dref->nlvl_to);
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avio_skip(pb, 16);
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for (type = 0; type != -1 && avio_tell(pb) < next; ) {
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type = avio_rb16(pb);
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len = avio_rb16(pb);
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av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
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if (len&1)
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len += 1;
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if (type == 2) { // absolute path
|
|
av_free(dref->path);
|
|
dref->path = av_mallocz(len+1);
|
|
if (!dref->path)
|
|
return AVERROR(ENOMEM);
|
|
avio_read(pb, dref->path, len);
|
|
if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
|
|
len -= volume_len;
|
|
memmove(dref->path, dref->path+volume_len, len);
|
|
dref->path[len] = 0;
|
|
}
|
|
for (j = 0; j < len; j++)
|
|
if (dref->path[j] == ':')
|
|
dref->path[j] = '/';
|
|
av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
|
|
} else if (type == 0) { // directory name
|
|
av_free(dref->dir);
|
|
dref->dir = av_malloc(len+1);
|
|
if (!dref->dir)
|
|
return AVERROR(ENOMEM);
|
|
avio_read(pb, dref->dir, len);
|
|
dref->dir[len] = 0;
|
|
for (j = 0; j < len; j++)
|
|
if (dref->dir[j] == ':')
|
|
dref->dir[j] = '/';
|
|
av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
|
|
} else
|
|
avio_skip(pb, len);
|
|
}
|
|
}
|
|
avio_seek(pb, next, SEEK_SET);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
uint32_t type;
|
|
uint32_t av_unused ctype;
|
|
|
|
if (c->fc->nb_streams < 1) // meta before first trak
|
|
return 0;
|
|
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
|
|
/* component type */
|
|
ctype = avio_rl32(pb);
|
|
type = avio_rl32(pb); /* component subtype */
|
|
|
|
av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
|
|
av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
|
|
|
|
if (type == MKTAG('v','i','d','e'))
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
else if (type == MKTAG('s','o','u','n'))
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
else if (type == MKTAG('m','1','a',' '))
|
|
st->codec->codec_id = CODEC_ID_MP2;
|
|
else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
|
|
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
|
|
|
|
avio_rb32(pb); /* component manufacture */
|
|
avio_rb32(pb); /* component flags */
|
|
avio_rb32(pb); /* component flags mask */
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
int tag;
|
|
|
|
if (fc->nb_streams < 1)
|
|
return 0;
|
|
st = fc->streams[fc->nb_streams-1];
|
|
|
|
avio_rb32(pb); /* version + flags */
|
|
ff_mp4_read_descr(fc, pb, &tag);
|
|
if (tag == MP4ESDescrTag) {
|
|
ff_mp4_parse_es_descr(pb, NULL);
|
|
} else
|
|
avio_rb16(pb); /* ID */
|
|
|
|
ff_mp4_read_descr(fc, pb, &tag);
|
|
if (tag == MP4DecConfigDescrTag)
|
|
ff_mp4_read_dec_config_descr(fc, st, pb);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
return ff_mov_read_esds(c->fc, pb, atom);
|
|
}
|
|
|
|
static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
int ac3info, acmod, lfeon, bsmod;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
ac3info = avio_rb24(pb);
|
|
bsmod = (ac3info >> 14) & 0x7;
|
|
acmod = (ac3info >> 11) & 0x7;
|
|
lfeon = (ac3info >> 10) & 0x1;
|
|
st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
|
|
st->codec->audio_service_type = bsmod;
|
|
if (st->codec->channels > 1 && bsmod == 0x7)
|
|
st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
uint8_t version;
|
|
uint32_t flags, layout_tag, bitmap, num_descr, label_mask;
|
|
int i;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if (atom.size < 16)
|
|
return 0;
|
|
|
|
version = avio_r8(pb);
|
|
flags = avio_rb24(pb);
|
|
|
|
layout_tag = avio_rb32(pb);
|
|
bitmap = avio_rb32(pb);
|
|
num_descr = avio_rb32(pb);
|
|
|
|
if (atom.size < 16ULL + num_descr * 20ULL)
|
|
return 0;
|
|
|
|
av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
|
|
atom.size, version, flags, layout_tag, bitmap, num_descr);
|
|
|
|
label_mask = 0;
|
|
for (i = 0; i < num_descr; i++) {
|
|
uint32_t label, cflags;
|
|
label = avio_rb32(pb); // mChannelLabel
|
|
cflags = avio_rb32(pb); // mChannelFlags
|
|
avio_rl32(pb); // mCoordinates[0]
|
|
avio_rl32(pb); // mCoordinates[1]
|
|
avio_rl32(pb); // mCoordinates[2]
|
|
if (layout_tag == 0) {
|
|
uint32_t mask_incr = ff_mov_get_channel_label(label);
|
|
if (mask_incr == 0) {
|
|
label_mask = 0;
|
|
break;
|
|
}
|
|
label_mask |= mask_incr;
|
|
}
|
|
}
|
|
if (layout_tag == 0)
|
|
st->codec->channel_layout = label_mask;
|
|
else
|
|
st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
ff_get_wav_header(pb, st->codec, atom.size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
const int num = avio_rb32(pb);
|
|
const int den = avio_rb32(pb);
|
|
AVStream *st;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
|
|
(den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
|
|
av_log(c->fc, AV_LOG_WARNING,
|
|
"sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
|
|
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
|
|
num, den);
|
|
} else if (den != 0) {
|
|
st->sample_aspect_ratio.num = num;
|
|
st->sample_aspect_ratio.den = den;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* this atom contains actual media data */
|
|
static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
if (atom.size == 0) /* wrong one (MP4) */
|
|
return 0;
|
|
c->found_mdat=1;
|
|
return 0; /* now go for moov */
|
|
}
|
|
|
|
/* read major brand, minor version and compatible brands and store them as metadata */
|
|
static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
uint32_t minor_ver;
|
|
int comp_brand_size;
|
|
char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
|
|
char* comp_brands_str;
|
|
uint8_t type[5] = {0};
|
|
|
|
avio_read(pb, type, 4);
|
|
if (strcmp(type, "qt "))
|
|
c->isom = 1;
|
|
av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
|
|
av_dict_set(&c->fc->metadata, "major_brand", type, 0);
|
|
minor_ver = avio_rb32(pb); /* minor version */
|
|
snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
|
|
av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
|
|
|
|
comp_brand_size = atom.size - 8;
|
|
if (comp_brand_size < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
|
|
if (!comp_brands_str)
|
|
return AVERROR(ENOMEM);
|
|
avio_read(pb, comp_brands_str, comp_brand_size);
|
|
comp_brands_str[comp_brand_size] = 0;
|
|
av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
|
|
av_freep(&comp_brands_str);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* this atom should contain all header atoms */
|
|
static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = mov_read_default(c, pb, atom)) < 0)
|
|
return ret;
|
|
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
|
|
/* so we don't parse the whole file if over a network */
|
|
c->found_moov=1;
|
|
return 0; /* now go for mdat */
|
|
}
|
|
|
|
static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
c->fragment.moof_offset = avio_tell(pb) - 8;
|
|
av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
|
|
static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
|
|
{
|
|
char buffer[32];
|
|
if (time) {
|
|
struct tm *ptm;
|
|
time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
|
|
ptm = gmtime(&time);
|
|
if (!ptm) return;
|
|
strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
|
|
av_dict_set(metadata, "creation_time", buffer, 0);
|
|
}
|
|
}
|
|
|
|
static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
int version;
|
|
char language[4] = {0};
|
|
unsigned lang;
|
|
time_t creation_time;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
version = avio_r8(pb);
|
|
if (version > 1) {
|
|
av_log_ask_for_sample(c, "unsupported version %d\n", version);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
avio_rb24(pb); /* flags */
|
|
if (version == 1) {
|
|
creation_time = avio_rb64(pb);
|
|
avio_rb64(pb);
|
|
} else {
|
|
creation_time = avio_rb32(pb);
|
|
avio_rb32(pb); /* modification time */
|
|
}
|
|
mov_metadata_creation_time(&st->metadata, creation_time);
|
|
|
|
sc->time_scale = avio_rb32(pb);
|
|
st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
|
|
|
|
lang = avio_rb16(pb); /* language */
|
|
if (ff_mov_lang_to_iso639(lang, language))
|
|
av_dict_set(&st->metadata, "language", language, 0);
|
|
avio_rb16(pb); /* quality */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
time_t creation_time;
|
|
int version = avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
|
|
if (version == 1) {
|
|
creation_time = avio_rb64(pb);
|
|
avio_rb64(pb);
|
|
} else {
|
|
creation_time = avio_rb32(pb);
|
|
avio_rb32(pb); /* modification time */
|
|
}
|
|
mov_metadata_creation_time(&c->fc->metadata, creation_time);
|
|
c->time_scale = avio_rb32(pb); /* time scale */
|
|
|
|
av_dlog(c->fc, "time scale = %i\n", c->time_scale);
|
|
|
|
c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
|
|
avio_rb32(pb); /* preferred scale */
|
|
|
|
avio_rb16(pb); /* preferred volume */
|
|
|
|
avio_skip(pb, 10); /* reserved */
|
|
|
|
avio_skip(pb, 36); /* display matrix */
|
|
|
|
avio_rb32(pb); /* preview time */
|
|
avio_rb32(pb); /* preview duration */
|
|
avio_rb32(pb); /* poster time */
|
|
avio_rb32(pb); /* selection time */
|
|
avio_rb32(pb); /* selection duration */
|
|
avio_rb32(pb); /* current time */
|
|
avio_rb32(pb); /* next track ID */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if ((uint64_t)atom.size > (1<<30))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
// currently SVQ3 decoder expect full STSD header - so let's fake it
|
|
// this should be fixed and just SMI header should be passed
|
|
av_free(st->codec->extradata);
|
|
st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = 0x5a + atom.size;
|
|
memcpy(st->codec->extradata, "SVQ3", 4); // fake
|
|
avio_read(pb, st->codec->extradata + 0x5a, atom.size);
|
|
av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
int little_endian;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
little_endian = avio_rb16(pb);
|
|
av_dlog(c->fc, "enda %d\n", little_endian);
|
|
if (little_endian == 1) {
|
|
switch (st->codec->codec_id) {
|
|
case CODEC_ID_PCM_S24BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_S24LE;
|
|
break;
|
|
case CODEC_ID_PCM_S32BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_S32LE;
|
|
break;
|
|
case CODEC_ID_PCM_F32BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_F32LE;
|
|
break;
|
|
case CODEC_ID_PCM_F64BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_F64LE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
unsigned mov_field_order;
|
|
enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
|
|
|
|
if (c->fc->nb_streams < 1) // will happen with jp2 files
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
if (atom.size < 2)
|
|
return AVERROR_INVALIDDATA;
|
|
mov_field_order = avio_rb16(pb);
|
|
if ((mov_field_order & 0xFF00) == 0x0100)
|
|
decoded_field_order = AV_FIELD_PROGRESSIVE;
|
|
else if ((mov_field_order & 0xFF00) == 0x0200) {
|
|
switch (mov_field_order & 0xFF) {
|
|
case 0x01: decoded_field_order = AV_FIELD_TT;
|
|
break;
|
|
case 0x06: decoded_field_order = AV_FIELD_BB;
|
|
break;
|
|
case 0x09: decoded_field_order = AV_FIELD_TB;
|
|
break;
|
|
case 0x0E: decoded_field_order = AV_FIELD_BT;
|
|
break;
|
|
}
|
|
}
|
|
if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
|
|
av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
|
|
}
|
|
st->codec->field_order = decoded_field_order;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
|
|
static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
uint64_t size;
|
|
uint8_t *buf;
|
|
|
|
if (c->fc->nb_streams < 1) // will happen with jp2 files
|
|
return 0;
|
|
st= c->fc->streams[c->fc->nb_streams-1];
|
|
size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
|
|
if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
|
|
return AVERROR_INVALIDDATA;
|
|
buf= av_realloc(st->codec->extradata, size);
|
|
if (!buf)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata= buf;
|
|
buf+= st->codec->extradata_size;
|
|
st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
|
|
AV_WB32( buf , atom.size + 8);
|
|
AV_WL32( buf + 4, atom.type);
|
|
avio_read(pb, buf + 8, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if ((uint64_t)atom.size > (1<<30))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
|
|
// pass all frma atom to codec, needed at least for QDMC and QDM2
|
|
av_free(st->codec->extradata);
|
|
st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = atom.size;
|
|
avio_read(pb, st->codec->extradata, atom.size);
|
|
} else if (atom.size > 8) { /* to read frma, esds atoms */
|
|
int ret;
|
|
if ((ret = mov_read_default(c, pb, atom)) < 0)
|
|
return ret;
|
|
} else
|
|
avio_skip(pb, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* This function reads atom content and puts data in extradata without tag
|
|
* nor size unlike mov_read_extradata.
|
|
*/
|
|
static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if ((uint64_t)atom.size > (1<<30))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (atom.size >= 10) {
|
|
// Broken files created by legacy versions of Libav and FFmpeg will
|
|
// wrap a whole fiel atom inside of a glbl atom.
|
|
unsigned size = avio_rb32(pb);
|
|
unsigned type = avio_rl32(pb);
|
|
avio_seek(pb, -8, SEEK_CUR);
|
|
if (type == MKTAG('f','i','e','l') && size == atom.size)
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
av_free(st->codec->extradata);
|
|
st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = atom.size;
|
|
avio_read(pb, st->codec->extradata, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
|
|
* but can have extradata appended at the end after the 40 bytes belonging
|
|
* to the struct.
|
|
*/
|
|
static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
if (atom.size <= 40)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if ((uint64_t)atom.size > (1<<30))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
av_free(st->codec->extradata);
|
|
st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = atom.size - 40;
|
|
avio_skip(pb, 40);
|
|
avio_read(pb, st->codec->extradata, atom.size - 40);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned int i, entries;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
|
|
entries = avio_rb32(pb);
|
|
|
|
if (!entries)
|
|
return 0;
|
|
if (entries >= UINT_MAX/sizeof(int64_t))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
|
|
if (!sc->chunk_offsets)
|
|
return AVERROR(ENOMEM);
|
|
sc->chunk_count = entries;
|
|
|
|
if (atom.type == MKTAG('s','t','c','o'))
|
|
for (i=0; i<entries; i++)
|
|
sc->chunk_offsets[i] = avio_rb32(pb);
|
|
else if (atom.type == MKTAG('c','o','6','4'))
|
|
for (i=0; i<entries; i++)
|
|
sc->chunk_offsets[i] = avio_rb64(pb);
|
|
else
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Compute codec id for 'lpcm' tag.
|
|
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
|
|
*/
|
|
enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
|
|
{
|
|
if (flags & 1) { // floating point
|
|
if (flags & 2) { // big endian
|
|
if (bps == 32) return CODEC_ID_PCM_F32BE;
|
|
else if (bps == 64) return CODEC_ID_PCM_F64BE;
|
|
} else {
|
|
if (bps == 32) return CODEC_ID_PCM_F32LE;
|
|
else if (bps == 64) return CODEC_ID_PCM_F64LE;
|
|
}
|
|
} else {
|
|
if (flags & 2) {
|
|
if (bps == 8)
|
|
// signed integer
|
|
if (flags & 4) return CODEC_ID_PCM_S8;
|
|
else return CODEC_ID_PCM_U8;
|
|
else if (bps == 16) return CODEC_ID_PCM_S16BE;
|
|
else if (bps == 24) return CODEC_ID_PCM_S24BE;
|
|
else if (bps == 32) return CODEC_ID_PCM_S32BE;
|
|
} else {
|
|
if (bps == 8)
|
|
if (flags & 4) return CODEC_ID_PCM_S8;
|
|
else return CODEC_ID_PCM_U8;
|
|
else if (bps == 16) return CODEC_ID_PCM_S16LE;
|
|
else if (bps == 24) return CODEC_ID_PCM_S24LE;
|
|
else if (bps == 32) return CODEC_ID_PCM_S32LE;
|
|
}
|
|
}
|
|
return CODEC_ID_NONE;
|
|
}
|
|
|
|
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
int j, pseudo_stream_id;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
|
|
//Parsing Sample description table
|
|
enum CodecID id;
|
|
int dref_id = 1;
|
|
MOVAtom a = { AV_RL32("stsd") };
|
|
int64_t start_pos = avio_tell(pb);
|
|
int size = avio_rb32(pb); /* size */
|
|
uint32_t format = avio_rl32(pb); /* data format */
|
|
|
|
if (size >= 16) {
|
|
avio_rb32(pb); /* reserved */
|
|
avio_rb16(pb); /* reserved */
|
|
dref_id = avio_rb16(pb);
|
|
}
|
|
|
|
if (st->codec->codec_tag &&
|
|
st->codec->codec_tag != format &&
|
|
(c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
|
|
: st->codec->codec_tag != MKTAG('j','p','e','g'))
|
|
){
|
|
/* Multiple fourcc, we skip JPEG. This is not correct, we should
|
|
* export it as a separate AVStream but this needs a few changes
|
|
* in the MOV demuxer, patch welcome. */
|
|
multiple_stsd:
|
|
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
|
|
avio_skip(pb, size - (avio_tell(pb) - start_pos));
|
|
continue;
|
|
}
|
|
/* we cannot demux concatenated h264 streams because of different extradata */
|
|
if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
|
|
goto multiple_stsd;
|
|
sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
|
|
sc->dref_id= dref_id;
|
|
|
|
st->codec->codec_tag = format;
|
|
id = ff_codec_get_id(codec_movaudio_tags, format);
|
|
if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
|
|
id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
|
|
|
|
if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
} else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
|
|
format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
|
|
id = ff_codec_get_id(codec_movvideo_tags, format);
|
|
if (id <= 0)
|
|
id = ff_codec_get_id(ff_codec_bmp_tags, format);
|
|
if (id > 0)
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
|
|
id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
|
|
if (id > 0)
|
|
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
|
|
}
|
|
}
|
|
|
|
av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
|
|
(format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
|
|
(format >> 24) & 0xff, st->codec->codec_type);
|
|
|
|
if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
|
|
unsigned int color_depth, len;
|
|
int color_greyscale;
|
|
|
|
st->codec->codec_id = id;
|
|
avio_rb16(pb); /* version */
|
|
avio_rb16(pb); /* revision level */
|
|
avio_rb32(pb); /* vendor */
|
|
avio_rb32(pb); /* temporal quality */
|
|
avio_rb32(pb); /* spatial quality */
|
|
|
|
st->codec->width = avio_rb16(pb); /* width */
|
|
st->codec->height = avio_rb16(pb); /* height */
|
|
|
|
avio_rb32(pb); /* horiz resolution */
|
|
avio_rb32(pb); /* vert resolution */
|
|
avio_rb32(pb); /* data size, always 0 */
|
|
avio_rb16(pb); /* frames per samples */
|
|
|
|
len = avio_r8(pb); /* codec name, pascal string */
|
|
if (len > 31)
|
|
len = 31;
|
|
mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
|
|
if (len < 31)
|
|
avio_skip(pb, 31 - len);
|
|
/* codec_tag YV12 triggers an UV swap in rawdec.c */
|
|
if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
|
|
st->codec->codec_tag=MKTAG('I', '4', '2', '0');
|
|
|
|
st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
|
|
st->codec->color_table_id = avio_rb16(pb); /* colortable id */
|
|
av_dlog(c->fc, "depth %d, ctab id %d\n",
|
|
st->codec->bits_per_coded_sample, st->codec->color_table_id);
|
|
/* figure out the palette situation */
|
|
color_depth = st->codec->bits_per_coded_sample & 0x1F;
|
|
color_greyscale = st->codec->bits_per_coded_sample & 0x20;
|
|
|
|
/* if the depth is 2, 4, or 8 bpp, file is palettized */
|
|
if ((color_depth == 2) || (color_depth == 4) ||
|
|
(color_depth == 8)) {
|
|
/* for palette traversal */
|
|
unsigned int color_start, color_count, color_end;
|
|
unsigned char r, g, b;
|
|
|
|
if (color_greyscale) {
|
|
int color_index, color_dec;
|
|
/* compute the greyscale palette */
|
|
st->codec->bits_per_coded_sample = color_depth;
|
|
color_count = 1 << color_depth;
|
|
color_index = 255;
|
|
color_dec = 256 / (color_count - 1);
|
|
for (j = 0; j < color_count; j++) {
|
|
r = g = b = color_index;
|
|
sc->palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
color_index -= color_dec;
|
|
if (color_index < 0)
|
|
color_index = 0;
|
|
}
|
|
} else if (st->codec->color_table_id) {
|
|
const uint8_t *color_table;
|
|
/* if flag bit 3 is set, use the default palette */
|
|
color_count = 1 << color_depth;
|
|
if (color_depth == 2)
|
|
color_table = ff_qt_default_palette_4;
|
|
else if (color_depth == 4)
|
|
color_table = ff_qt_default_palette_16;
|
|
else
|
|
color_table = ff_qt_default_palette_256;
|
|
|
|
for (j = 0; j < color_count; j++) {
|
|
r = color_table[j * 3 + 0];
|
|
g = color_table[j * 3 + 1];
|
|
b = color_table[j * 3 + 2];
|
|
sc->palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
}
|
|
} else {
|
|
/* load the palette from the file */
|
|
color_start = avio_rb32(pb);
|
|
color_count = avio_rb16(pb);
|
|
color_end = avio_rb16(pb);
|
|
if ((color_start <= 255) &&
|
|
(color_end <= 255)) {
|
|
for (j = color_start; j <= color_end; j++) {
|
|
/* each R, G, or B component is 16 bits;
|
|
* only use the top 8 bits; skip alpha bytes
|
|
* up front */
|
|
avio_r8(pb);
|
|
avio_r8(pb);
|
|
r = avio_r8(pb);
|
|
avio_r8(pb);
|
|
g = avio_r8(pb);
|
|
avio_r8(pb);
|
|
b = avio_r8(pb);
|
|
avio_r8(pb);
|
|
sc->palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
}
|
|
}
|
|
}
|
|
sc->has_palette = 1;
|
|
}
|
|
} else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
|
|
int bits_per_sample, flags;
|
|
uint16_t version = avio_rb16(pb);
|
|
|
|
st->codec->codec_id = id;
|
|
avio_rb16(pb); /* revision level */
|
|
avio_rb32(pb); /* vendor */
|
|
|
|
st->codec->channels = avio_rb16(pb); /* channel count */
|
|
av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
|
|
st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
|
|
|
|
sc->audio_cid = avio_rb16(pb);
|
|
avio_rb16(pb); /* packet size = 0 */
|
|
|
|
st->codec->sample_rate = ((avio_rb32(pb) >> 16));
|
|
|
|
//Read QT version 1 fields. In version 0 these do not exist.
|
|
av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
|
|
if (!c->isom) {
|
|
if (version==1) {
|
|
sc->samples_per_frame = avio_rb32(pb);
|
|
avio_rb32(pb); /* bytes per packet */
|
|
sc->bytes_per_frame = avio_rb32(pb);
|
|
avio_rb32(pb); /* bytes per sample */
|
|
} else if (version==2) {
|
|
avio_rb32(pb); /* sizeof struct only */
|
|
st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
|
|
st->codec->channels = avio_rb32(pb);
|
|
avio_rb32(pb); /* always 0x7F000000 */
|
|
st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
|
|
flags = avio_rb32(pb); /* lpcm format specific flag */
|
|
sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
|
|
sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
|
|
if (format == MKTAG('l','p','c','m'))
|
|
st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
|
|
}
|
|
}
|
|
|
|
switch (st->codec->codec_id) {
|
|
case CODEC_ID_PCM_S8:
|
|
case CODEC_ID_PCM_U8:
|
|
if (st->codec->bits_per_coded_sample == 16)
|
|
st->codec->codec_id = CODEC_ID_PCM_S16BE;
|
|
break;
|
|
case CODEC_ID_PCM_S16LE:
|
|
case CODEC_ID_PCM_S16BE:
|
|
if (st->codec->bits_per_coded_sample == 8)
|
|
st->codec->codec_id = CODEC_ID_PCM_S8;
|
|
else if (st->codec->bits_per_coded_sample == 24)
|
|
st->codec->codec_id =
|
|
st->codec->codec_id == CODEC_ID_PCM_S16BE ?
|
|
CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
|
|
break;
|
|
/* set values for old format before stsd version 1 appeared */
|
|
case CODEC_ID_MACE3:
|
|
sc->samples_per_frame = 6;
|
|
sc->bytes_per_frame = 2*st->codec->channels;
|
|
break;
|
|
case CODEC_ID_MACE6:
|
|
sc->samples_per_frame = 6;
|
|
sc->bytes_per_frame = 1*st->codec->channels;
|
|
break;
|
|
case CODEC_ID_ADPCM_IMA_QT:
|
|
sc->samples_per_frame = 64;
|
|
sc->bytes_per_frame = 34*st->codec->channels;
|
|
break;
|
|
case CODEC_ID_GSM:
|
|
sc->samples_per_frame = 160;
|
|
sc->bytes_per_frame = 33;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
|
|
if (bits_per_sample) {
|
|
st->codec->bits_per_coded_sample = bits_per_sample;
|
|
sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
|
|
}
|
|
} else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
|
|
// ttxt stsd contains display flags, justification, background
|
|
// color, fonts, and default styles, so fake an atom to read it
|
|
MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
|
|
if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
|
|
mov_read_glbl(c, pb, fake_atom);
|
|
st->codec->codec_id= id;
|
|
st->codec->width = sc->width;
|
|
st->codec->height = sc->height;
|
|
} else {
|
|
/* other codec type, just skip (rtp, mp4s, tmcd ...) */
|
|
avio_skip(pb, size - (avio_tell(pb) - start_pos));
|
|
}
|
|
/* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
|
|
a.size = size - (avio_tell(pb) - start_pos);
|
|
if (a.size > 8) {
|
|
int ret;
|
|
if ((ret = mov_read_default(c, pb, a)) < 0)
|
|
return ret;
|
|
} else if (a.size > 0)
|
|
avio_skip(pb, a.size);
|
|
}
|
|
|
|
if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
|
|
st->codec->sample_rate= sc->time_scale;
|
|
|
|
/* special codec parameters handling */
|
|
switch (st->codec->codec_id) {
|
|
#if CONFIG_DV_DEMUXER
|
|
case CODEC_ID_DVAUDIO:
|
|
c->dv_fctx = avformat_alloc_context();
|
|
c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
|
|
if (!c->dv_demux) {
|
|
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
sc->dv_audio_container = 1;
|
|
st->codec->codec_id = CODEC_ID_PCM_S16LE;
|
|
break;
|
|
#endif
|
|
/* no ifdef since parameters are always those */
|
|
case CODEC_ID_QCELP:
|
|
// force sample rate for qcelp when not stored in mov
|
|
if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
|
|
st->codec->sample_rate = 8000;
|
|
st->codec->frame_size= 160;
|
|
st->codec->channels= 1; /* really needed */
|
|
break;
|
|
case CODEC_ID_AMR_NB:
|
|
st->codec->channels= 1; /* really needed */
|
|
/* force sample rate for amr, stsd in 3gp does not store sample rate */
|
|
st->codec->sample_rate = 8000;
|
|
/* force frame_size, too, samples_per_frame isn't always set properly */
|
|
st->codec->frame_size = 160;
|
|
break;
|
|
case CODEC_ID_AMR_WB:
|
|
st->codec->channels = 1;
|
|
st->codec->sample_rate = 16000;
|
|
st->codec->frame_size = 320;
|
|
break;
|
|
case CODEC_ID_MP2:
|
|
case CODEC_ID_MP3:
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
break;
|
|
case CODEC_ID_GSM:
|
|
case CODEC_ID_ADPCM_MS:
|
|
case CODEC_ID_ADPCM_IMA_WAV:
|
|
st->codec->frame_size = sc->samples_per_frame;
|
|
st->codec->block_align = sc->bytes_per_frame;
|
|
break;
|
|
case CODEC_ID_ALAC:
|
|
if (st->codec->extradata_size == 36) {
|
|
st->codec->frame_size = AV_RB32(st->codec->extradata+12);
|
|
st->codec->channels = AV_RB8 (st->codec->extradata+21);
|
|
st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
int entries;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
entries = avio_rb32(pb);
|
|
|
|
return ff_mov_read_stsd_entries(c, pb, entries);
|
|
}
|
|
|
|
static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned int i, entries;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
|
|
entries = avio_rb32(pb);
|
|
|
|
av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
if (!entries)
|
|
return 0;
|
|
if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
|
|
return AVERROR_INVALIDDATA;
|
|
sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
|
|
if (!sc->stsc_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->stsc_count = entries;
|
|
|
|
for (i=0; i<entries; i++) {
|
|
sc->stsc_data[i].first = avio_rb32(pb);
|
|
sc->stsc_data[i].count = avio_rb32(pb);
|
|
sc->stsc_data[i].id = avio_rb32(pb);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned i, entries;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_rb32(pb); // version + flags
|
|
|
|
entries = avio_rb32(pb);
|
|
if (entries >= UINT_MAX / sizeof(*sc->stps_data))
|
|
return AVERROR_INVALIDDATA;
|
|
sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
|
|
if (!sc->stps_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->stps_count = entries;
|
|
|
|
for (i = 0; i < entries; i++) {
|
|
sc->stps_data[i] = avio_rb32(pb);
|
|
//av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned int i, entries;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
|
|
entries = avio_rb32(pb);
|
|
|
|
av_dlog(c->fc, "keyframe_count = %d\n", entries);
|
|
|
|
if (entries >= UINT_MAX / sizeof(int))
|
|
return AVERROR_INVALIDDATA;
|
|
sc->keyframes = av_malloc(entries * sizeof(int));
|
|
if (!sc->keyframes)
|
|
return AVERROR(ENOMEM);
|
|
sc->keyframe_count = entries;
|
|
|
|
for (i=0; i<entries; i++) {
|
|
sc->keyframes[i] = avio_rb32(pb);
|
|
//av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned int i, entries, sample_size, field_size, num_bytes;
|
|
GetBitContext gb;
|
|
unsigned char* buf;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
|
|
if (atom.type == MKTAG('s','t','s','z')) {
|
|
sample_size = avio_rb32(pb);
|
|
if (!sc->sample_size) /* do not overwrite value computed in stsd */
|
|
sc->sample_size = sample_size;
|
|
field_size = 32;
|
|
} else {
|
|
sample_size = 0;
|
|
avio_rb24(pb); /* reserved */
|
|
field_size = avio_r8(pb);
|
|
}
|
|
entries = avio_rb32(pb);
|
|
|
|
av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
|
|
|
|
sc->sample_count = entries;
|
|
if (sample_size)
|
|
return 0;
|
|
|
|
if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
|
|
av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (!entries)
|
|
return 0;
|
|
if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
|
|
return AVERROR_INVALIDDATA;
|
|
sc->sample_sizes = av_malloc(entries * sizeof(int));
|
|
if (!sc->sample_sizes)
|
|
return AVERROR(ENOMEM);
|
|
|
|
num_bytes = (entries*field_size+4)>>3;
|
|
|
|
buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!buf) {
|
|
av_freep(&sc->sample_sizes);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (avio_read(pb, buf, num_bytes) < num_bytes) {
|
|
av_freep(&sc->sample_sizes);
|
|
av_free(buf);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
init_get_bits(&gb, buf, 8*num_bytes);
|
|
|
|
for (i = 0; i < entries; i++) {
|
|
sc->sample_sizes[i] = get_bits_long(&gb, field_size);
|
|
sc->data_size += sc->sample_sizes[i];
|
|
}
|
|
|
|
av_free(buf);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned int i, entries;
|
|
int64_t duration=0;
|
|
int64_t total_sample_count=0;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
entries = avio_rb32(pb);
|
|
|
|
av_dlog(c->fc, "track[%i].stts.entries = %i\n",
|
|
c->fc->nb_streams-1, entries);
|
|
|
|
if (!entries)
|
|
return 0;
|
|
if (entries >= UINT_MAX / sizeof(*sc->stts_data))
|
|
return AVERROR(EINVAL);
|
|
|
|
sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
|
|
if (!sc->stts_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
sc->stts_count = entries;
|
|
|
|
for (i=0; i<entries; i++) {
|
|
int sample_duration;
|
|
int sample_count;
|
|
|
|
sample_count=avio_rb32(pb);
|
|
sample_duration = avio_rb32(pb);
|
|
sc->stts_data[i].count= sample_count;
|
|
sc->stts_data[i].duration= sample_duration;
|
|
|
|
av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
|
|
sample_count, sample_duration);
|
|
|
|
duration+=(int64_t)sample_duration*sample_count;
|
|
total_sample_count+=sample_count;
|
|
}
|
|
|
|
st->nb_frames= total_sample_count;
|
|
if (duration)
|
|
st->duration= duration;
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
unsigned int i, entries;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
entries = avio_rb32(pb);
|
|
|
|
av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
if (!entries)
|
|
return 0;
|
|
if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
|
|
return AVERROR_INVALIDDATA;
|
|
sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
|
|
if (!sc->ctts_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->ctts_count = entries;
|
|
|
|
for (i=0; i<entries; i++) {
|
|
int count =avio_rb32(pb);
|
|
int duration =avio_rb32(pb);
|
|
|
|
sc->ctts_data[i].count = count;
|
|
sc->ctts_data[i].duration= duration;
|
|
if (duration < 0)
|
|
sc->dts_shift = FFMAX(sc->dts_shift, -duration);
|
|
}
|
|
|
|
av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mov_build_index(MOVContext *mov, AVStream *st)
|
|
{
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int64_t current_offset;
|
|
int64_t current_dts = 0;
|
|
unsigned int stts_index = 0;
|
|
unsigned int stsc_index = 0;
|
|
unsigned int stss_index = 0;
|
|
unsigned int stps_index = 0;
|
|
unsigned int i, j;
|
|
uint64_t stream_size = 0;
|
|
|
|
/* adjust first dts according to edit list */
|
|
if (sc->time_offset && mov->time_scale > 0) {
|
|
if (sc->time_offset < 0)
|
|
sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
|
|
current_dts = -sc->time_offset;
|
|
if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
|
|
sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
|
|
/* more than 16 frames delay, dts are likely wrong
|
|
this happens with files created by iMovie */
|
|
sc->wrong_dts = 1;
|
|
st->codec->has_b_frames = 1;
|
|
}
|
|
}
|
|
|
|
/* only use old uncompressed audio chunk demuxing when stts specifies it */
|
|
if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
|
|
sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
|
|
unsigned int current_sample = 0;
|
|
unsigned int stts_sample = 0;
|
|
unsigned int sample_size;
|
|
unsigned int distance = 0;
|
|
int key_off = sc->keyframes && sc->keyframes[0] == 1;
|
|
|
|
current_dts -= sc->dts_shift;
|
|
|
|
if (!sc->sample_count)
|
|
return;
|
|
if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
|
|
return;
|
|
st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
|
|
if (!st->index_entries)
|
|
return;
|
|
st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
|
|
|
|
for (i = 0; i < sc->chunk_count; i++) {
|
|
current_offset = sc->chunk_offsets[i];
|
|
while (stsc_index + 1 < sc->stsc_count &&
|
|
i + 1 == sc->stsc_data[stsc_index + 1].first)
|
|
stsc_index++;
|
|
for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
|
|
int keyframe = 0;
|
|
if (current_sample >= sc->sample_count) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
|
|
return;
|
|
}
|
|
|
|
if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
|
|
keyframe = 1;
|
|
if (stss_index + 1 < sc->keyframe_count)
|
|
stss_index++;
|
|
} else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
|
|
keyframe = 1;
|
|
if (stps_index + 1 < sc->stps_count)
|
|
stps_index++;
|
|
}
|
|
if (keyframe)
|
|
distance = 0;
|
|
sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
|
|
if (sc->pseudo_stream_id == -1 ||
|
|
sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
|
|
AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
|
|
e->pos = current_offset;
|
|
e->timestamp = current_dts;
|
|
e->size = sample_size;
|
|
e->min_distance = distance;
|
|
e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
|
|
av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
|
|
"size %d, distance %d, keyframe %d\n", st->index, current_sample,
|
|
current_offset, current_dts, sample_size, distance, keyframe);
|
|
}
|
|
|
|
current_offset += sample_size;
|
|
stream_size += sample_size;
|
|
current_dts += sc->stts_data[stts_index].duration;
|
|
distance++;
|
|
stts_sample++;
|
|
current_sample++;
|
|
if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
|
|
stts_sample = 0;
|
|
stts_index++;
|
|
}
|
|
}
|
|
}
|
|
if (st->duration > 0)
|
|
st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
|
|
} else {
|
|
unsigned chunk_samples, total = 0;
|
|
|
|
// compute total chunk count
|
|
for (i = 0; i < sc->stsc_count; i++) {
|
|
unsigned count, chunk_count;
|
|
|
|
chunk_samples = sc->stsc_data[i].count;
|
|
if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
|
|
return;
|
|
}
|
|
|
|
if (sc->samples_per_frame >= 160) { // gsm
|
|
count = chunk_samples / sc->samples_per_frame;
|
|
} else if (sc->samples_per_frame > 1) {
|
|
unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
|
|
count = (chunk_samples+samples-1) / samples;
|
|
} else {
|
|
count = (chunk_samples+1023) / 1024;
|
|
}
|
|
|
|
if (i < sc->stsc_count - 1)
|
|
chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
|
|
else
|
|
chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
|
|
total += chunk_count * count;
|
|
}
|
|
|
|
av_dlog(mov->fc, "chunk count %d\n", total);
|
|
if (total >= UINT_MAX / sizeof(*st->index_entries))
|
|
return;
|
|
st->index_entries = av_malloc(total*sizeof(*st->index_entries));
|
|
if (!st->index_entries)
|
|
return;
|
|
st->index_entries_allocated_size = total*sizeof(*st->index_entries);
|
|
|
|
// populate index
|
|
for (i = 0; i < sc->chunk_count; i++) {
|
|
current_offset = sc->chunk_offsets[i];
|
|
if (stsc_index + 1 < sc->stsc_count &&
|
|
i + 1 == sc->stsc_data[stsc_index + 1].first)
|
|
stsc_index++;
|
|
chunk_samples = sc->stsc_data[stsc_index].count;
|
|
|
|
while (chunk_samples > 0) {
|
|
AVIndexEntry *e;
|
|
unsigned size, samples;
|
|
|
|
if (sc->samples_per_frame >= 160) { // gsm
|
|
samples = sc->samples_per_frame;
|
|
size = sc->bytes_per_frame;
|
|
} else {
|
|
if (sc->samples_per_frame > 1) {
|
|
samples = FFMIN((1024 / sc->samples_per_frame)*
|
|
sc->samples_per_frame, chunk_samples);
|
|
size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
|
|
} else {
|
|
samples = FFMIN(1024, chunk_samples);
|
|
size = samples * sc->sample_size;
|
|
}
|
|
}
|
|
|
|
if (st->nb_index_entries >= total) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
|
|
return;
|
|
}
|
|
e = &st->index_entries[st->nb_index_entries++];
|
|
e->pos = current_offset;
|
|
e->timestamp = current_dts;
|
|
e->size = size;
|
|
e->min_distance = 0;
|
|
e->flags = AVINDEX_KEYFRAME;
|
|
av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
|
|
"size %d, duration %d\n", st->index, i, current_offset, current_dts,
|
|
size, samples);
|
|
|
|
current_offset += size;
|
|
current_dts += samples;
|
|
chunk_samples -= samples;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
|
|
AVIOInterruptCB *int_cb)
|
|
{
|
|
/* try relative path, we do not try the absolute because it can leak information about our
|
|
system to an attacker */
|
|
if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
|
|
char filename[1024];
|
|
char *src_path;
|
|
int i, l;
|
|
|
|
/* find a source dir */
|
|
src_path = strrchr(src, '/');
|
|
if (src_path)
|
|
src_path++;
|
|
else
|
|
src_path = src;
|
|
|
|
/* find a next level down to target */
|
|
for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
|
|
if (ref->path[l] == '/') {
|
|
if (i == ref->nlvl_to - 1)
|
|
break;
|
|
else
|
|
i++;
|
|
}
|
|
|
|
/* compose filename if next level down to target was found */
|
|
if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
|
|
memcpy(filename, src, src_path - src);
|
|
filename[src_path - src] = 0;
|
|
|
|
for (i = 1; i < ref->nlvl_from; i++)
|
|
av_strlcat(filename, "../", 1024);
|
|
|
|
av_strlcat(filename, ref->path + l + 1, 1024);
|
|
|
|
if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return AVERROR(ENOENT);
|
|
}
|
|
|
|
static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
int ret;
|
|
|
|
st = avformat_new_stream(c->fc, NULL);
|
|
if (!st) return AVERROR(ENOMEM);
|
|
st->id = c->fc->nb_streams;
|
|
sc = av_mallocz(sizeof(MOVStreamContext));
|
|
if (!sc) return AVERROR(ENOMEM);
|
|
|
|
st->priv_data = sc;
|
|
st->codec->codec_type = AVMEDIA_TYPE_DATA;
|
|
sc->ffindex = st->index;
|
|
|
|
if ((ret = mov_read_default(c, pb, atom)) < 0)
|
|
return ret;
|
|
|
|
/* sanity checks */
|
|
if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
|
|
(!sc->sample_size && !sc->sample_count))) {
|
|
av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
|
|
st->index);
|
|
return 0;
|
|
}
|
|
|
|
if (sc->time_scale <= 0) {
|
|
av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
|
|
sc->time_scale = c->time_scale;
|
|
if (sc->time_scale <= 0)
|
|
sc->time_scale = 1;
|
|
}
|
|
|
|
avpriv_set_pts_info(st, 64, 1, sc->time_scale);
|
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
|
|
!st->codec->frame_size && sc->stts_count == 1) {
|
|
st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
|
|
st->codec->sample_rate, sc->time_scale);
|
|
av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
|
|
}
|
|
|
|
mov_build_index(c, st);
|
|
|
|
if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
|
|
MOVDref *dref = &sc->drefs[sc->dref_id - 1];
|
|
if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
|
|
av_log(c->fc, AV_LOG_ERROR,
|
|
"stream %d, error opening alias: path='%s', dir='%s', "
|
|
"filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
|
|
st->index, dref->path, dref->dir, dref->filename,
|
|
dref->volume, dref->nlvl_from, dref->nlvl_to);
|
|
} else
|
|
sc->pb = c->fc->pb;
|
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (!st->sample_aspect_ratio.num &&
|
|
(st->codec->width != sc->width || st->codec->height != sc->height)) {
|
|
st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
|
|
((double)st->codec->width * sc->height), INT_MAX);
|
|
}
|
|
|
|
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
|
|
sc->time_scale*st->nb_frames, st->duration, INT_MAX);
|
|
|
|
if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
|
|
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
|
|
sc->time_scale, sc->stts_data[0].duration, INT_MAX);
|
|
}
|
|
|
|
switch (st->codec->codec_id) {
|
|
#if CONFIG_H261_DECODER
|
|
case CODEC_ID_H261:
|
|
#endif
|
|
#if CONFIG_H263_DECODER
|
|
case CODEC_ID_H263:
|
|
#endif
|
|
#if CONFIG_H264_DECODER
|
|
case CODEC_ID_H264:
|
|
#endif
|
|
#if CONFIG_MPEG4_DECODER
|
|
case CODEC_ID_MPEG4:
|
|
#endif
|
|
st->codec->width = 0; /* let decoder init width/height */
|
|
st->codec->height= 0;
|
|
break;
|
|
}
|
|
|
|
/* Do not need those anymore. */
|
|
av_freep(&sc->chunk_offsets);
|
|
av_freep(&sc->stsc_data);
|
|
av_freep(&sc->sample_sizes);
|
|
av_freep(&sc->keyframes);
|
|
av_freep(&sc->stts_data);
|
|
av_freep(&sc->stps_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
int ret;
|
|
c->itunes_metadata = 1;
|
|
ret = mov_read_default(c, pb, atom);
|
|
c->itunes_metadata = 0;
|
|
return ret;
|
|
}
|
|
|
|
static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
while (atom.size > 8) {
|
|
uint32_t tag = avio_rl32(pb);
|
|
atom.size -= 4;
|
|
if (tag == MKTAG('h','d','l','r')) {
|
|
avio_seek(pb, -8, SEEK_CUR);
|
|
atom.size += 8;
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
int i;
|
|
int width;
|
|
int height;
|
|
int64_t disp_transform[2];
|
|
int display_matrix[3][2];
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
int version;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = st->priv_data;
|
|
|
|
version = avio_r8(pb);
|
|
avio_rb24(pb); /* flags */
|
|
/*
|
|
MOV_TRACK_ENABLED 0x0001
|
|
MOV_TRACK_IN_MOVIE 0x0002
|
|
MOV_TRACK_IN_PREVIEW 0x0004
|
|
MOV_TRACK_IN_POSTER 0x0008
|
|
*/
|
|
|
|
if (version == 1) {
|
|
avio_rb64(pb);
|
|
avio_rb64(pb);
|
|
} else {
|
|
avio_rb32(pb); /* creation time */
|
|
avio_rb32(pb); /* modification time */
|
|
}
|
|
st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
|
|
avio_rb32(pb); /* reserved */
|
|
|
|
/* highlevel (considering edits) duration in movie timebase */
|
|
(version == 1) ? avio_rb64(pb) : avio_rb32(pb);
|
|
avio_rb32(pb); /* reserved */
|
|
avio_rb32(pb); /* reserved */
|
|
|
|
avio_rb16(pb); /* layer */
|
|
avio_rb16(pb); /* alternate group */
|
|
avio_rb16(pb); /* volume */
|
|
avio_rb16(pb); /* reserved */
|
|
|
|
//read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
|
|
// they're kept in fixed point format through all calculations
|
|
// ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
|
|
for (i = 0; i < 3; i++) {
|
|
display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
|
|
display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
|
|
avio_rb32(pb); // 2.30 fixed point (not used)
|
|
}
|
|
|
|
width = avio_rb32(pb); // 16.16 fixed point track width
|
|
height = avio_rb32(pb); // 16.16 fixed point track height
|
|
sc->width = width >> 16;
|
|
sc->height = height >> 16;
|
|
|
|
// transform the display width/height according to the matrix
|
|
// skip this if the display matrix is the default identity matrix
|
|
// or if it is rotating the picture, ex iPhone 3GS
|
|
// to keep the same scale, use [width height 1<<16]
|
|
if (width && height &&
|
|
((display_matrix[0][0] != 65536 ||
|
|
display_matrix[1][1] != 65536) &&
|
|
!display_matrix[0][1] &&
|
|
!display_matrix[1][0] &&
|
|
!display_matrix[2][0] && !display_matrix[2][1])) {
|
|
for (i = 0; i < 2; i++)
|
|
disp_transform[i] =
|
|
(int64_t) width * display_matrix[0][i] +
|
|
(int64_t) height * display_matrix[1][i] +
|
|
((int64_t) display_matrix[2][i] << 16);
|
|
|
|
//sample aspect ratio is new width/height divided by old width/height
|
|
st->sample_aspect_ratio = av_d2q(
|
|
((double) disp_transform[0] * height) /
|
|
((double) disp_transform[1] * width), INT_MAX);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVFragment *frag = &c->fragment;
|
|
MOVTrackExt *trex = NULL;
|
|
int flags, track_id, i;
|
|
|
|
avio_r8(pb); /* version */
|
|
flags = avio_rb24(pb);
|
|
|
|
track_id = avio_rb32(pb);
|
|
if (!track_id)
|
|
return AVERROR_INVALIDDATA;
|
|
frag->track_id = track_id;
|
|
for (i = 0; i < c->trex_count; i++)
|
|
if (c->trex_data[i].track_id == frag->track_id) {
|
|
trex = &c->trex_data[i];
|
|
break;
|
|
}
|
|
if (!trex) {
|
|
av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
|
|
else frag->base_data_offset = frag->moof_offset;
|
|
if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
|
|
else frag->stsd_id = trex->stsd_id;
|
|
|
|
frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
|
|
frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
|
|
frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
|
|
av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
c->chapter_track = avio_rb32(pb);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVTrackExt *trex;
|
|
|
|
if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
|
|
return AVERROR_INVALIDDATA;
|
|
trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
|
|
if (!trex)
|
|
return AVERROR(ENOMEM);
|
|
c->trex_data = trex;
|
|
trex = &c->trex_data[c->trex_count++];
|
|
avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
trex->track_id = avio_rb32(pb);
|
|
trex->stsd_id = avio_rb32(pb);
|
|
trex->duration = avio_rb32(pb);
|
|
trex->size = avio_rb32(pb);
|
|
trex->flags = avio_rb32(pb);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVFragment *frag = &c->fragment;
|
|
AVStream *st = NULL;
|
|
MOVStreamContext *sc;
|
|
MOVStts *ctts_data;
|
|
uint64_t offset;
|
|
int64_t dts;
|
|
int data_offset = 0;
|
|
unsigned entries, first_sample_flags = frag->flags;
|
|
int flags, distance, i;
|
|
|
|
for (i = 0; i < c->fc->nb_streams; i++) {
|
|
if (c->fc->streams[i]->id == frag->track_id) {
|
|
st = c->fc->streams[i];
|
|
break;
|
|
}
|
|
}
|
|
if (!st) {
|
|
av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
sc = st->priv_data;
|
|
if (sc->pseudo_stream_id+1 != frag->stsd_id)
|
|
return 0;
|
|
avio_r8(pb); /* version */
|
|
flags = avio_rb24(pb);
|
|
entries = avio_rb32(pb);
|
|
av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
|
|
|
|
/* Always assume the presence of composition time offsets.
|
|
* Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
|
|
* 1) in the initial movie, there are no samples.
|
|
* 2) in the first movie fragment, there is only one sample without composition time offset.
|
|
* 3) in the subsequent movie fragments, there are samples with composition time offset. */
|
|
if (!sc->ctts_count && sc->sample_count)
|
|
{
|
|
/* Complement ctts table if moov atom doesn't have ctts atom. */
|
|
ctts_data = av_malloc(sizeof(*sc->ctts_data));
|
|
if (!ctts_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->ctts_data = ctts_data;
|
|
sc->ctts_data[sc->ctts_count].count = sc->sample_count;
|
|
sc->ctts_data[sc->ctts_count].duration = 0;
|
|
sc->ctts_count++;
|
|
}
|
|
if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
|
|
return AVERROR_INVALIDDATA;
|
|
ctts_data = av_realloc(sc->ctts_data,
|
|
(entries+sc->ctts_count)*sizeof(*sc->ctts_data));
|
|
if (!ctts_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->ctts_data = ctts_data;
|
|
|
|
if (flags & 0x001) data_offset = avio_rb32(pb);
|
|
if (flags & 0x004) first_sample_flags = avio_rb32(pb);
|
|
dts = st->duration - sc->time_offset;
|
|
offset = frag->base_data_offset + data_offset;
|
|
distance = 0;
|
|
av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
|
|
for (i = 0; i < entries; i++) {
|
|
unsigned sample_size = frag->size;
|
|
int sample_flags = i ? frag->flags : first_sample_flags;
|
|
unsigned sample_duration = frag->duration;
|
|
int keyframe;
|
|
|
|
if (flags & 0x100) sample_duration = avio_rb32(pb);
|
|
if (flags & 0x200) sample_size = avio_rb32(pb);
|
|
if (flags & 0x400) sample_flags = avio_rb32(pb);
|
|
sc->ctts_data[sc->ctts_count].count = 1;
|
|
sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
|
|
sc->ctts_count++;
|
|
if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
|
|
(flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
|
|
distance = 0;
|
|
av_add_index_entry(st, offset, dts, sample_size, distance,
|
|
keyframe ? AVINDEX_KEYFRAME : 0);
|
|
av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
|
|
"size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
|
|
offset, dts, sample_size, distance, keyframe);
|
|
distance++;
|
|
dts += sample_duration;
|
|
offset += sample_size;
|
|
sc->data_size += sample_size;
|
|
}
|
|
frag->moof_offset = offset;
|
|
st->duration = dts + sc->time_offset;
|
|
return 0;
|
|
}
|
|
|
|
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
|
|
/* like the files created with Adobe Premiere 5.0, for samples see */
|
|
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
|
|
static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
int err;
|
|
|
|
if (atom.size < 8)
|
|
return 0; /* continue */
|
|
if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
|
|
avio_skip(pb, atom.size - 4);
|
|
return 0;
|
|
}
|
|
atom.type = avio_rl32(pb);
|
|
atom.size -= 8;
|
|
if (atom.type != MKTAG('m','d','a','t')) {
|
|
avio_skip(pb, atom.size);
|
|
return 0;
|
|
}
|
|
err = mov_read_mdat(c, pb, atom);
|
|
return err;
|
|
}
|
|
|
|
static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
#if CONFIG_ZLIB
|
|
AVIOContext ctx;
|
|
uint8_t *cmov_data;
|
|
uint8_t *moov_data; /* uncompressed data */
|
|
long cmov_len, moov_len;
|
|
int ret = -1;
|
|
|
|
avio_rb32(pb); /* dcom atom */
|
|
if (avio_rl32(pb) != MKTAG('d','c','o','m'))
|
|
return AVERROR_INVALIDDATA;
|
|
if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
|
|
av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
avio_rb32(pb); /* cmvd atom */
|
|
if (avio_rl32(pb) != MKTAG('c','m','v','d'))
|
|
return AVERROR_INVALIDDATA;
|
|
moov_len = avio_rb32(pb); /* uncompressed size */
|
|
cmov_len = atom.size - 6 * 4;
|
|
|
|
cmov_data = av_malloc(cmov_len);
|
|
if (!cmov_data)
|
|
return AVERROR(ENOMEM);
|
|
moov_data = av_malloc(moov_len);
|
|
if (!moov_data) {
|
|
av_free(cmov_data);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
avio_read(pb, cmov_data, cmov_len);
|
|
if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
|
|
goto free_and_return;
|
|
if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
|
|
goto free_and_return;
|
|
atom.type = MKTAG('m','o','o','v');
|
|
atom.size = moov_len;
|
|
ret = mov_read_default(c, &ctx, atom);
|
|
free_and_return:
|
|
av_free(moov_data);
|
|
av_free(cmov_data);
|
|
return ret;
|
|
#else
|
|
av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
|
|
return AVERROR(ENOSYS);
|
|
#endif
|
|
}
|
|
|
|
/* edit list atom */
|
|
static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVStreamContext *sc;
|
|
int i, edit_count, version;
|
|
|
|
if (c->fc->nb_streams < 1)
|
|
return 0;
|
|
sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
|
|
|
|
version = avio_r8(pb); /* version */
|
|
avio_rb24(pb); /* flags */
|
|
edit_count = avio_rb32(pb); /* entries */
|
|
|
|
if ((uint64_t)edit_count*12+8 > atom.size)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
for (i=0; i<edit_count; i++){
|
|
int64_t time;
|
|
int64_t duration;
|
|
if (version == 1) {
|
|
duration = avio_rb64(pb);
|
|
time = avio_rb64(pb);
|
|
} else {
|
|
duration = avio_rb32(pb); /* segment duration */
|
|
time = (int32_t)avio_rb32(pb); /* media time */
|
|
}
|
|
avio_rb32(pb); /* Media rate */
|
|
if (i == 0 && time >= -1) {
|
|
sc->time_offset = time != -1 ? time : -duration;
|
|
}
|
|
}
|
|
|
|
if (edit_count > 1)
|
|
av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
|
|
"a/v desync might occur, patch welcome\n");
|
|
|
|
av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
|
|
return 0;
|
|
}
|
|
|
|
static const MOVParseTableEntry mov_default_parse_table[] = {
|
|
{ MKTAG('a','v','s','s'), mov_read_extradata },
|
|
{ MKTAG('c','h','p','l'), mov_read_chpl },
|
|
{ MKTAG('c','o','6','4'), mov_read_stco },
|
|
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
|
|
{ MKTAG('d','i','n','f'), mov_read_default },
|
|
{ MKTAG('d','r','e','f'), mov_read_dref },
|
|
{ MKTAG('e','d','t','s'), mov_read_default },
|
|
{ MKTAG('e','l','s','t'), mov_read_elst },
|
|
{ MKTAG('e','n','d','a'), mov_read_enda },
|
|
{ MKTAG('f','i','e','l'), mov_read_fiel },
|
|
{ MKTAG('f','t','y','p'), mov_read_ftyp },
|
|
{ MKTAG('g','l','b','l'), mov_read_glbl },
|
|
{ MKTAG('h','d','l','r'), mov_read_hdlr },
|
|
{ MKTAG('i','l','s','t'), mov_read_ilst },
|
|
{ MKTAG('j','p','2','h'), mov_read_extradata },
|
|
{ MKTAG('m','d','a','t'), mov_read_mdat },
|
|
{ MKTAG('m','d','h','d'), mov_read_mdhd },
|
|
{ MKTAG('m','d','i','a'), mov_read_default },
|
|
{ MKTAG('m','e','t','a'), mov_read_meta },
|
|
{ MKTAG('m','i','n','f'), mov_read_default },
|
|
{ MKTAG('m','o','o','f'), mov_read_moof },
|
|
{ MKTAG('m','o','o','v'), mov_read_moov },
|
|
{ MKTAG('m','v','e','x'), mov_read_default },
|
|
{ MKTAG('m','v','h','d'), mov_read_mvhd },
|
|
{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
|
|
{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
|
|
{ MKTAG('a','v','c','C'), mov_read_glbl },
|
|
{ MKTAG('p','a','s','p'), mov_read_pasp },
|
|
{ MKTAG('s','t','b','l'), mov_read_default },
|
|
{ MKTAG('s','t','c','o'), mov_read_stco },
|
|
{ MKTAG('s','t','p','s'), mov_read_stps },
|
|
{ MKTAG('s','t','r','f'), mov_read_strf },
|
|
{ MKTAG('s','t','s','c'), mov_read_stsc },
|
|
{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
|
|
{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
|
|
{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
|
|
{ MKTAG('s','t','t','s'), mov_read_stts },
|
|
{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
|
|
{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
|
|
{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
|
|
{ MKTAG('t','r','a','k'), mov_read_trak },
|
|
{ MKTAG('t','r','a','f'), mov_read_default },
|
|
{ MKTAG('t','r','e','f'), mov_read_default },
|
|
{ MKTAG('c','h','a','p'), mov_read_chap },
|
|
{ MKTAG('t','r','e','x'), mov_read_trex },
|
|
{ MKTAG('t','r','u','n'), mov_read_trun },
|
|
{ MKTAG('u','d','t','a'), mov_read_default },
|
|
{ MKTAG('w','a','v','e'), mov_read_wave },
|
|
{ MKTAG('e','s','d','s'), mov_read_esds },
|
|
{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
|
|
{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
|
|
{ MKTAG('w','f','e','x'), mov_read_wfex },
|
|
{ MKTAG('c','m','o','v'), mov_read_cmov },
|
|
{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static int mov_probe(AVProbeData *p)
|
|
{
|
|
unsigned int offset;
|
|
uint32_t tag;
|
|
int score = 0;
|
|
|
|
/* check file header */
|
|
offset = 0;
|
|
for (;;) {
|
|
/* ignore invalid offset */
|
|
if ((offset + 8) > (unsigned int)p->buf_size)
|
|
return score;
|
|
tag = AV_RL32(p->buf + offset + 4);
|
|
switch(tag) {
|
|
/* check for obvious tags */
|
|
case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
|
|
case MKTAG('m','o','o','v'):
|
|
case MKTAG('m','d','a','t'):
|
|
case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
|
|
case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
|
|
case MKTAG('f','t','y','p'):
|
|
return AVPROBE_SCORE_MAX;
|
|
/* those are more common words, so rate then a bit less */
|
|
case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
|
|
case MKTAG('w','i','d','e'):
|
|
case MKTAG('f','r','e','e'):
|
|
case MKTAG('j','u','n','k'):
|
|
case MKTAG('p','i','c','t'):
|
|
return AVPROBE_SCORE_MAX - 5;
|
|
case MKTAG(0x82,0x82,0x7f,0x7d):
|
|
case MKTAG('s','k','i','p'):
|
|
case MKTAG('u','u','i','d'):
|
|
case MKTAG('p','r','f','l'):
|
|
offset = AV_RB32(p->buf+offset) + offset;
|
|
/* if we only find those cause probedata is too small at least rate them */
|
|
score = AVPROBE_SCORE_MAX - 50;
|
|
break;
|
|
default:
|
|
/* unrecognized tag */
|
|
return score;
|
|
}
|
|
}
|
|
}
|
|
|
|
// must be done after parsing all trak because there's no order requirement
|
|
static void mov_read_chapters(AVFormatContext *s)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
AVStream *st = NULL;
|
|
MOVStreamContext *sc;
|
|
int64_t cur_pos;
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
if (s->streams[i]->id == mov->chapter_track) {
|
|
st = s->streams[i];
|
|
break;
|
|
}
|
|
if (!st) {
|
|
av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
|
|
return;
|
|
}
|
|
|
|
st->discard = AVDISCARD_ALL;
|
|
sc = st->priv_data;
|
|
cur_pos = avio_tell(sc->pb);
|
|
|
|
for (i = 0; i < st->nb_index_entries; i++) {
|
|
AVIndexEntry *sample = &st->index_entries[i];
|
|
int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
|
|
uint8_t *title;
|
|
uint16_t ch;
|
|
int len, title_len;
|
|
|
|
if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
|
|
av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
|
|
goto finish;
|
|
}
|
|
|
|
// the first two bytes are the length of the title
|
|
len = avio_rb16(sc->pb);
|
|
if (len > sample->size-2)
|
|
continue;
|
|
title_len = 2*len + 1;
|
|
if (!(title = av_mallocz(title_len)))
|
|
goto finish;
|
|
|
|
// The samples could theoretically be in any encoding if there's an encd
|
|
// atom following, but in practice are only utf-8 or utf-16, distinguished
|
|
// instead by the presence of a BOM
|
|
if (!len) {
|
|
title[0] = 0;
|
|
} else {
|
|
ch = avio_rb16(sc->pb);
|
|
if (ch == 0xfeff)
|
|
avio_get_str16be(sc->pb, len, title, title_len);
|
|
else if (ch == 0xfffe)
|
|
avio_get_str16le(sc->pb, len, title, title_len);
|
|
else {
|
|
AV_WB16(title, ch);
|
|
if (len == 1 || len == 2)
|
|
title[len] = 0;
|
|
else
|
|
avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
|
|
}
|
|
}
|
|
|
|
avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
|
|
av_freep(&title);
|
|
}
|
|
finish:
|
|
avio_seek(sc->pb, cur_pos, SEEK_SET);
|
|
}
|
|
|
|
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int err;
|
|
MOVAtom atom = { AV_RL32("root") };
|
|
|
|
mov->fc = s;
|
|
/* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
|
|
if (pb->seekable)
|
|
atom.size = avio_size(pb);
|
|
else
|
|
atom.size = INT64_MAX;
|
|
|
|
/* check MOV header */
|
|
if ((err = mov_read_default(mov, pb, atom)) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
|
|
return err;
|
|
}
|
|
if (!mov->found_moov) {
|
|
av_log(s, AV_LOG_ERROR, "moov atom not found\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
|
|
|
|
if (pb->seekable && mov->chapter_track > 0)
|
|
mov_read_chapters(s);
|
|
|
|
if (mov->trex_data) {
|
|
int i;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
if (st->duration)
|
|
st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
|
|
{
|
|
AVIndexEntry *sample = NULL;
|
|
int64_t best_dts = INT64_MAX;
|
|
int i;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *avst = s->streams[i];
|
|
MOVStreamContext *msc = avst->priv_data;
|
|
if (msc->pb && msc->current_sample < avst->nb_index_entries) {
|
|
AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
|
|
int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
|
|
av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
|
|
if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
|
|
(s->pb->seekable &&
|
|
((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
|
|
((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
|
|
(FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
|
|
sample = current_sample;
|
|
best_dts = dts;
|
|
*st = avst;
|
|
}
|
|
}
|
|
}
|
|
return sample;
|
|
}
|
|
|
|
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
MOVStreamContext *sc;
|
|
AVIndexEntry *sample;
|
|
AVStream *st = NULL;
|
|
int ret;
|
|
retry:
|
|
sample = mov_find_next_sample(s, &st);
|
|
if (!sample) {
|
|
mov->found_mdat = 0;
|
|
if (s->pb->seekable||
|
|
mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
|
|
s->pb->eof_reached)
|
|
return AVERROR_EOF;
|
|
av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
|
|
goto retry;
|
|
}
|
|
sc = st->priv_data;
|
|
/* must be done just before reading, to avoid infinite loop on sample */
|
|
sc->current_sample++;
|
|
|
|
if (st->discard != AVDISCARD_ALL) {
|
|
if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
|
|
sc->ffindex, sample->pos);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
ret = av_get_packet(sc->pb, pkt, sample->size);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (sc->has_palette) {
|
|
uint8_t *pal;
|
|
|
|
pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
|
|
if (!pal) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
|
|
} else {
|
|
memcpy(pal, sc->palette, AVPALETTE_SIZE);
|
|
sc->has_palette = 0;
|
|
}
|
|
}
|
|
#if CONFIG_DV_DEMUXER
|
|
if (mov->dv_demux && sc->dv_audio_container) {
|
|
avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
|
|
av_free(pkt->data);
|
|
pkt->size = 0;
|
|
ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
pkt->stream_index = sc->ffindex;
|
|
pkt->dts = sample->timestamp;
|
|
if (sc->ctts_data) {
|
|
pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
|
|
/* update ctts context */
|
|
sc->ctts_sample++;
|
|
if (sc->ctts_index < sc->ctts_count &&
|
|
sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
|
|
sc->ctts_index++;
|
|
sc->ctts_sample = 0;
|
|
}
|
|
if (sc->wrong_dts)
|
|
pkt->dts = AV_NOPTS_VALUE;
|
|
} else {
|
|
int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
|
|
st->index_entries[sc->current_sample].timestamp : st->duration;
|
|
pkt->duration = next_dts - pkt->dts;
|
|
pkt->pts = pkt->dts;
|
|
}
|
|
if (st->discard == AVDISCARD_ALL)
|
|
goto retry;
|
|
pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
|
|
pkt->pos = sample->pos;
|
|
av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
|
|
pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
|
|
{
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int sample, time_sample;
|
|
int i;
|
|
|
|
sample = av_index_search_timestamp(st, timestamp, flags);
|
|
av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
|
|
if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
|
|
sample = 0;
|
|
if (sample < 0) /* not sure what to do */
|
|
return AVERROR_INVALIDDATA;
|
|
sc->current_sample = sample;
|
|
av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
|
|
/* adjust ctts index */
|
|
if (sc->ctts_data) {
|
|
time_sample = 0;
|
|
for (i = 0; i < sc->ctts_count; i++) {
|
|
int next = time_sample + sc->ctts_data[i].count;
|
|
if (next > sc->current_sample) {
|
|
sc->ctts_index = i;
|
|
sc->ctts_sample = sc->current_sample - time_sample;
|
|
break;
|
|
}
|
|
time_sample = next;
|
|
}
|
|
}
|
|
return sample;
|
|
}
|
|
|
|
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
|
|
{
|
|
AVStream *st;
|
|
int64_t seek_timestamp, timestamp;
|
|
int sample;
|
|
int i;
|
|
|
|
if (stream_index >= s->nb_streams)
|
|
return AVERROR_INVALIDDATA;
|
|
if (sample_time < 0)
|
|
sample_time = 0;
|
|
|
|
st = s->streams[stream_index];
|
|
sample = mov_seek_stream(s, st, sample_time, flags);
|
|
if (sample < 0)
|
|
return sample;
|
|
|
|
/* adjust seek timestamp to found sample timestamp */
|
|
seek_timestamp = st->index_entries[sample].timestamp;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
if (stream_index == i)
|
|
continue;
|
|
|
|
timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
|
|
mov_seek_stream(s, st, timestamp, flags);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_close(AVFormatContext *s)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
int i, j;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
|
|
av_freep(&sc->ctts_data);
|
|
for (j = 0; j < sc->drefs_count; j++) {
|
|
av_freep(&sc->drefs[j].path);
|
|
av_freep(&sc->drefs[j].dir);
|
|
}
|
|
av_freep(&sc->drefs);
|
|
if (sc->pb && sc->pb != s->pb)
|
|
avio_close(sc->pb);
|
|
}
|
|
|
|
if (mov->dv_demux) {
|
|
for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
|
|
av_freep(&mov->dv_fctx->streams[i]->codec);
|
|
av_freep(&mov->dv_fctx->streams[i]);
|
|
}
|
|
av_freep(&mov->dv_fctx);
|
|
av_freep(&mov->dv_demux);
|
|
}
|
|
|
|
av_freep(&mov->trex_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_mov_demuxer = {
|
|
.name = "mov,mp4,m4a,3gp,3g2,mj2",
|
|
.long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
|
|
.priv_data_size = sizeof(MOVContext),
|
|
.read_probe = mov_probe,
|
|
.read_header = mov_read_header,
|
|
.read_packet = mov_read_packet,
|
|
.read_close = mov_read_close,
|
|
.read_seek = mov_read_seek,
|
|
};
|