ffmpeg / libavformat / mov.c @ 0c468f56
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/*
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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 FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 DEBUG_METADATA
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//#define MOV_EXPORT_ALL_METADATA
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/avstring.h" |
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#include "avformat.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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#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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* Features and limitations:
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* - reads most of the QT files I have (at least the structure),
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* Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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* - the code is quite ugly... maybe I won't do it recursive next time :-)
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*
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* Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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* when coding this :) (it's a writer anyway)
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*
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* Reference documents:
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* http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
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* Apple:
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* http://developer.apple.com/documentation/QuickTime/QTFF/
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* http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
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* QuickTime is a trademark of Apple (AFAIK :))
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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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/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
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/* those functions parse an atom */
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/* return code:
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0: continue to parse next atom
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<0: error occurred, exit
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*/
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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, ByteIOContext *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_trkn(MOVContext *c, ByteIOContext *pb, unsigned len) |
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{ |
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char buf[16]; |
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get_be16(pb); // unknown
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snprintf(buf, sizeof(buf), "%d", get_be16(pb)); |
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av_metadata_set2(&c->fc->metadata, "track", buf, 0); |
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get_be16(pb); // total tracks
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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, ByteIOContext *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 = get_byte(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, ByteIOContext *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*, ByteIOContext*, unsigned) = 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(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(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_trkn; break;
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} |
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if (c->itunes_metadata && atom.size > 8) { |
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int data_size = get_be32(pb);
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int tag = get_le32(pb);
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if (tag == MKTAG('d','a','t','a')) { |
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data_type = get_be32(pb); // type
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get_be32(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 = get_be16(pb); // string length
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langcode = get_be16(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 -1; |
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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); |
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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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get_buffer(pb, str, str_size); |
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str[str_size] = 0;
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} |
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av_metadata_set2(&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_metadata_set2(&c->fc->metadata, key2, str, 0);
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} |
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} |
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#ifdef DEBUG_METADATA
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av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
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av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
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key, str, (char*)&atom.type, str_size, atom.size);
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#endif
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return 0; |
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} |
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static int mov_read_chpl(MOVContext *c, ByteIOContext *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 = get_byte(pb); |
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get_be24(pb); |
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if (version)
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get_be32(pb); // ???
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nb_chapters = get_byte(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 = get_be64(pb); |
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str_len = get_byte(pb); |
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if ((atom.size -= 9+str_len) < 0) |
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return 0; |
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get_buffer(pb, str, str_len); |
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str[str_len] = 0;
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ff_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, ByteIOContext *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 && !url_feof(pb)) { |
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int (*parse)(MOVContext*, ByteIOContext*, 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 = get_be32(pb); |
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a.type = get_le32(pb); |
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} |
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dprintf(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 = get_be64(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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url_fskip(pb, a.size); |
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} else {
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int64_t start_pos = url_ftell(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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(url_is_streamed(pb) || start_pos + a.size == url_fsize(pb))) |
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return 0; |
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left = a.size - url_ftell(pb) + start_pos; |
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if (left > 0) /* skip garbage at atom end */ |
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url_fskip(pb, left); |
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} |
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total_size += a.size; |
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} |
315 |
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if (total_size < atom.size && atom.size < 0x7ffff) |
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url_fskip(pb, atom.size - total_size); |
318 |
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return 0; |
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} |
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static int mov_read_dref(MOVContext *c, ByteIOContext *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; |
332 |
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get_be32(pb); // version + flags
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entries = get_be32(pb); |
335 |
if (entries >= UINT_MAX / sizeof(*sc->drefs)) |
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return -1; |
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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; |
341 |
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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 = get_be32(pb); |
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int64_t next = url_ftell(pb) + size - 4;
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if (size < 12) |
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return -1; |
349 |
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dref->type = get_le32(pb); |
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get_be32(pb); // version + flags
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dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size); |
353 |
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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; |
358 |
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url_fskip(pb, 10);
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volume_len = get_byte(pb); |
362 |
volume_len = FFMIN(volume_len, 27);
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get_buffer(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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url_fskip(pb, 12);
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368 |
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len = get_byte(pb); |
370 |
len = FFMIN(len, 63);
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get_buffer(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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url_fskip(pb, 16);
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/* read next level up_from_alias/down_to_target */
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dref->nlvl_from = get_be16(pb); |
379 |
dref->nlvl_to = get_be16(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); |
382 |
|
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url_fskip(pb, 16);
|
384 |
|
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for (type = 0; type != -1 && url_ftell(pb) < next; ) { |
386 |
type = get_be16(pb); |
387 |
len = get_be16(pb); |
388 |
av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
|
389 |
if (len&1) |
390 |
len += 1;
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391 |
if (type == 2) { // absolute path |
392 |
av_free(dref->path); |
393 |
dref->path = av_mallocz(len+1);
|
394 |
if (!dref->path)
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return AVERROR(ENOMEM);
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396 |
get_buffer(pb, dref->path, len); |
397 |
if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
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398 |
len -= volume_len; |
399 |
memmove(dref->path, dref->path+volume_len, len); |
400 |
dref->path[len] = 0;
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} |
402 |
for (j = 0; j < len; j++) |
403 |
if (dref->path[j] == ':') |
404 |
dref->path[j] = '/';
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av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
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} else if (type == 0) { // directory name |
407 |
av_free(dref->dir); |
408 |
dref->dir = av_malloc(len+1);
|
409 |
if (!dref->dir)
|
410 |
return AVERROR(ENOMEM);
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411 |
get_buffer(pb, dref->dir, len); |
412 |
dref->dir[len] = 0;
|
413 |
for (j = 0; j < len; j++) |
414 |
if (dref->dir[j] == ':') |
415 |
dref->dir[j] = '/';
|
416 |
av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
|
417 |
} else
|
418 |
url_fskip(pb, len); |
419 |
} |
420 |
} |
421 |
url_fseek(pb, next, SEEK_SET); |
422 |
} |
423 |
return 0; |
424 |
} |
425 |
|
426 |
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
427 |
{ |
428 |
AVStream *st; |
429 |
uint32_t type; |
430 |
uint32_t ctype; |
431 |
|
432 |
if (c->fc->nb_streams < 1) // meta before first trak |
433 |
return 0; |
434 |
|
435 |
st = c->fc->streams[c->fc->nb_streams-1];
|
436 |
|
437 |
get_byte(pb); /* version */
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438 |
get_be24(pb); /* flags */
|
439 |
|
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/* component type */
|
441 |
ctype = get_le32(pb); |
442 |
type = get_le32(pb); /* component subtype */
|
443 |
|
444 |
dprintf(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype); |
445 |
dprintf(c->fc, "stype= %.4s\n", (char*)&type); |
446 |
|
447 |
if (type == MKTAG('v','i','d','e')) |
448 |
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
449 |
else if(type == MKTAG('s','o','u','n')) |
450 |
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
451 |
else if(type == MKTAG('m','1','a',' ')) |
452 |
st->codec->codec_id = CODEC_ID_MP2; |
453 |
else if(type == MKTAG('s','u','b','p')) |
454 |
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
455 |
|
456 |
get_be32(pb); /* component manufacture */
|
457 |
get_be32(pb); /* component flags */
|
458 |
get_be32(pb); /* component flags mask */
|
459 |
|
460 |
return 0; |
461 |
} |
462 |
|
463 |
int ff_mov_read_esds(AVFormatContext *fc, ByteIOContext *pb, MOVAtom atom)
|
464 |
{ |
465 |
AVStream *st; |
466 |
int tag, len;
|
467 |
|
468 |
if (fc->nb_streams < 1) |
469 |
return 0; |
470 |
st = fc->streams[fc->nb_streams-1];
|
471 |
|
472 |
get_be32(pb); /* version + flags */
|
473 |
len = ff_mp4_read_descr(fc, pb, &tag); |
474 |
if (tag == MP4ESDescrTag) {
|
475 |
get_be16(pb); /* ID */
|
476 |
get_byte(pb); /* priority */
|
477 |
} else
|
478 |
get_be16(pb); /* ID */
|
479 |
|
480 |
len = ff_mp4_read_descr(fc, pb, &tag); |
481 |
if (tag == MP4DecConfigDescrTag)
|
482 |
ff_mp4_read_dec_config_descr(fc, st, pb); |
483 |
return 0; |
484 |
} |
485 |
|
486 |
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
487 |
{ |
488 |
return ff_mov_read_esds(c->fc, pb, atom);
|
489 |
} |
490 |
|
491 |
static int mov_read_dac3(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
492 |
{ |
493 |
AVStream *st; |
494 |
int ac3info, acmod, lfeon;
|
495 |
|
496 |
if (c->fc->nb_streams < 1) |
497 |
return 0; |
498 |
st = c->fc->streams[c->fc->nb_streams-1];
|
499 |
|
500 |
ac3info = get_be24(pb); |
501 |
acmod = (ac3info >> 11) & 0x7; |
502 |
lfeon = (ac3info >> 10) & 0x1; |
503 |
st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon; |
504 |
|
505 |
return 0; |
506 |
} |
507 |
|
508 |
static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
509 |
{ |
510 |
const int num = get_be32(pb); |
511 |
const int den = get_be32(pb); |
512 |
AVStream *st; |
513 |
|
514 |
if (c->fc->nb_streams < 1) |
515 |
return 0; |
516 |
st = c->fc->streams[c->fc->nb_streams-1];
|
517 |
|
518 |
if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default |
519 |
(den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) { |
520 |
av_log(c->fc, AV_LOG_WARNING, |
521 |
"sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
|
522 |
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, |
523 |
num, den); |
524 |
} else if (den != 0) { |
525 |
st->sample_aspect_ratio.num = num; |
526 |
st->sample_aspect_ratio.den = den; |
527 |
} |
528 |
return 0; |
529 |
} |
530 |
|
531 |
/* this atom contains actual media data */
|
532 |
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
533 |
{ |
534 |
if(atom.size == 0) /* wrong one (MP4) */ |
535 |
return 0; |
536 |
c->found_mdat=1;
|
537 |
return 0; /* now go for moov */ |
538 |
} |
539 |
|
540 |
/* read major brand, minor version and compatible brands and store them as metadata */
|
541 |
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
542 |
{ |
543 |
uint32_t minor_ver; |
544 |
int comp_brand_size;
|
545 |
char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */ |
546 |
char* comp_brands_str;
|
547 |
uint8_t type[5] = {0}; |
548 |
|
549 |
get_buffer(pb, type, 4);
|
550 |
if (strcmp(type, "qt ")) |
551 |
c->isom = 1;
|
552 |
av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type); |
553 |
av_metadata_set2(&c->fc->metadata, "major_brand", type, 0); |
554 |
minor_ver = get_be32(pb); /* minor version */
|
555 |
snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver); |
556 |
av_metadata_set2(&c->fc->metadata, "minor_version", minor_ver_str, 0); |
557 |
|
558 |
comp_brand_size = atom.size - 8;
|
559 |
if (comp_brand_size < 0) |
560 |
return -1; |
561 |
comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */ |
562 |
if (!comp_brands_str)
|
563 |
return AVERROR(ENOMEM);
|
564 |
get_buffer(pb, comp_brands_str, comp_brand_size); |
565 |
comp_brands_str[comp_brand_size] = 0;
|
566 |
av_metadata_set2(&c->fc->metadata, "compatible_brands", comp_brands_str, 0); |
567 |
av_freep(&comp_brands_str); |
568 |
|
569 |
return 0; |
570 |
} |
571 |
|
572 |
/* this atom should contain all header atoms */
|
573 |
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
574 |
{ |
575 |
if (mov_read_default(c, pb, atom) < 0) |
576 |
return -1; |
577 |
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
|
578 |
/* so we don't parse the whole file if over a network */
|
579 |
c->found_moov=1;
|
580 |
return 0; /* now go for mdat */ |
581 |
} |
582 |
|
583 |
static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
584 |
{ |
585 |
c->fragment.moof_offset = url_ftell(pb) - 8;
|
586 |
dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
|
587 |
return mov_read_default(c, pb, atom);
|
588 |
} |
589 |
|
590 |
static void mov_metadata_creation_time(AVMetadata **metadata, time_t time) |
591 |
{ |
592 |
char buffer[32]; |
593 |
if (time) {
|
594 |
struct tm *ptm;
|
595 |
time -= 2082844800; /* seconds between 1904-01-01 and Epoch */ |
596 |
ptm = gmtime(&time); |
597 |
if (!ptm) return; |
598 |
strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm); |
599 |
av_metadata_set2(metadata, "creation_time", buffer, 0); |
600 |
} |
601 |
} |
602 |
|
603 |
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
604 |
{ |
605 |
AVStream *st; |
606 |
MOVStreamContext *sc; |
607 |
int version;
|
608 |
char language[4] = {0}; |
609 |
unsigned lang;
|
610 |
time_t creation_time; |
611 |
|
612 |
if (c->fc->nb_streams < 1) |
613 |
return 0; |
614 |
st = c->fc->streams[c->fc->nb_streams-1];
|
615 |
sc = st->priv_data; |
616 |
|
617 |
version = get_byte(pb); |
618 |
if (version > 1) |
619 |
return -1; /* unsupported */ |
620 |
|
621 |
get_be24(pb); /* flags */
|
622 |
if (version == 1) { |
623 |
creation_time = get_be64(pb); |
624 |
get_be64(pb); |
625 |
} else {
|
626 |
creation_time = get_be32(pb); |
627 |
get_be32(pb); /* modification time */
|
628 |
} |
629 |
mov_metadata_creation_time(&st->metadata, creation_time); |
630 |
|
631 |
sc->time_scale = get_be32(pb); |
632 |
st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */ |
633 |
|
634 |
lang = get_be16(pb); /* language */
|
635 |
if (ff_mov_lang_to_iso639(lang, language))
|
636 |
av_metadata_set2(&st->metadata, "language", language, 0); |
637 |
get_be16(pb); /* quality */
|
638 |
|
639 |
return 0; |
640 |
} |
641 |
|
642 |
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
643 |
{ |
644 |
time_t creation_time; |
645 |
int version = get_byte(pb); /* version */ |
646 |
get_be24(pb); /* flags */
|
647 |
|
648 |
if (version == 1) { |
649 |
creation_time = get_be64(pb); |
650 |
get_be64(pb); |
651 |
} else {
|
652 |
creation_time = get_be32(pb); |
653 |
get_be32(pb); /* modification time */
|
654 |
} |
655 |
mov_metadata_creation_time(&c->fc->metadata, creation_time); |
656 |
c->time_scale = get_be32(pb); /* time scale */
|
657 |
|
658 |
dprintf(c->fc, "time scale = %i\n", c->time_scale);
|
659 |
|
660 |
c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */ |
661 |
get_be32(pb); /* preferred scale */
|
662 |
|
663 |
get_be16(pb); /* preferred volume */
|
664 |
|
665 |
url_fskip(pb, 10); /* reserved */ |
666 |
|
667 |
url_fskip(pb, 36); /* display matrix */ |
668 |
|
669 |
get_be32(pb); /* preview time */
|
670 |
get_be32(pb); /* preview duration */
|
671 |
get_be32(pb); /* poster time */
|
672 |
get_be32(pb); /* selection time */
|
673 |
get_be32(pb); /* selection duration */
|
674 |
get_be32(pb); /* current time */
|
675 |
get_be32(pb); /* next track ID */
|
676 |
|
677 |
return 0; |
678 |
} |
679 |
|
680 |
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
681 |
{ |
682 |
AVStream *st; |
683 |
|
684 |
if (c->fc->nb_streams < 1) |
685 |
return 0; |
686 |
st = c->fc->streams[c->fc->nb_streams-1];
|
687 |
|
688 |
if((uint64_t)atom.size > (1<<30)) |
689 |
return -1; |
690 |
|
691 |
// currently SVQ3 decoder expect full STSD header - so let's fake it
|
692 |
// this should be fixed and just SMI header should be passed
|
693 |
av_free(st->codec->extradata); |
694 |
st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
|
695 |
if (!st->codec->extradata)
|
696 |
return AVERROR(ENOMEM);
|
697 |
st->codec->extradata_size = 0x5a + atom.size;
|
698 |
memcpy(st->codec->extradata, "SVQ3", 4); // fake |
699 |
get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
|
700 |
dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a); |
701 |
return 0; |
702 |
} |
703 |
|
704 |
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
705 |
{ |
706 |
AVStream *st; |
707 |
int little_endian;
|
708 |
|
709 |
if (c->fc->nb_streams < 1) |
710 |
return 0; |
711 |
st = c->fc->streams[c->fc->nb_streams-1];
|
712 |
|
713 |
little_endian = get_be16(pb); |
714 |
dprintf(c->fc, "enda %d\n", little_endian);
|
715 |
if (little_endian == 1) { |
716 |
switch (st->codec->codec_id) {
|
717 |
case CODEC_ID_PCM_S24BE:
|
718 |
st->codec->codec_id = CODEC_ID_PCM_S24LE; |
719 |
break;
|
720 |
case CODEC_ID_PCM_S32BE:
|
721 |
st->codec->codec_id = CODEC_ID_PCM_S32LE; |
722 |
break;
|
723 |
case CODEC_ID_PCM_F32BE:
|
724 |
st->codec->codec_id = CODEC_ID_PCM_F32LE; |
725 |
break;
|
726 |
case CODEC_ID_PCM_F64BE:
|
727 |
st->codec->codec_id = CODEC_ID_PCM_F64LE; |
728 |
break;
|
729 |
default:
|
730 |
break;
|
731 |
} |
732 |
} |
733 |
return 0; |
734 |
} |
735 |
|
736 |
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
|
737 |
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
738 |
{ |
739 |
AVStream *st; |
740 |
uint64_t size; |
741 |
uint8_t *buf; |
742 |
|
743 |
if (c->fc->nb_streams < 1) // will happen with jp2 files |
744 |
return 0; |
745 |
st= c->fc->streams[c->fc->nb_streams-1];
|
746 |
size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
|
747 |
if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
|
748 |
return -1; |
749 |
buf= av_realloc(st->codec->extradata, size); |
750 |
if(!buf)
|
751 |
return -1; |
752 |
st->codec->extradata= buf; |
753 |
buf+= st->codec->extradata_size; |
754 |
st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE; |
755 |
AV_WB32( buf , atom.size + 8);
|
756 |
AV_WL32( buf + 4, atom.type);
|
757 |
get_buffer(pb, buf + 8, atom.size);
|
758 |
return 0; |
759 |
} |
760 |
|
761 |
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
762 |
{ |
763 |
AVStream *st; |
764 |
|
765 |
if (c->fc->nb_streams < 1) |
766 |
return 0; |
767 |
st = c->fc->streams[c->fc->nb_streams-1];
|
768 |
|
769 |
if((uint64_t)atom.size > (1<<30)) |
770 |
return -1; |
771 |
|
772 |
if (st->codec->codec_id == CODEC_ID_QDM2) {
|
773 |
// pass all frma atom to codec, needed at least for QDM2
|
774 |
av_free(st->codec->extradata); |
775 |
st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); |
776 |
if (!st->codec->extradata)
|
777 |
return AVERROR(ENOMEM);
|
778 |
st->codec->extradata_size = atom.size; |
779 |
get_buffer(pb, st->codec->extradata, atom.size); |
780 |
} else if (atom.size > 8) { /* to read frma, esds atoms */ |
781 |
if (mov_read_default(c, pb, atom) < 0) |
782 |
return -1; |
783 |
} else
|
784 |
url_fskip(pb, atom.size); |
785 |
return 0; |
786 |
} |
787 |
|
788 |
/**
|
789 |
* This function reads atom content and puts data in extradata without tag
|
790 |
* nor size unlike mov_read_extradata.
|
791 |
*/
|
792 |
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
793 |
{ |
794 |
AVStream *st; |
795 |
|
796 |
if (c->fc->nb_streams < 1) |
797 |
return 0; |
798 |
st = c->fc->streams[c->fc->nb_streams-1];
|
799 |
|
800 |
if((uint64_t)atom.size > (1<<30)) |
801 |
return -1; |
802 |
|
803 |
av_free(st->codec->extradata); |
804 |
st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); |
805 |
if (!st->codec->extradata)
|
806 |
return AVERROR(ENOMEM);
|
807 |
st->codec->extradata_size = atom.size; |
808 |
get_buffer(pb, st->codec->extradata, atom.size); |
809 |
return 0; |
810 |
} |
811 |
|
812 |
/**
|
813 |
* An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
|
814 |
* but can have extradata appended at the end after the 40 bytes belonging
|
815 |
* to the struct.
|
816 |
*/
|
817 |
static int mov_read_strf(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
818 |
{ |
819 |
AVStream *st; |
820 |
|
821 |
if (c->fc->nb_streams < 1) |
822 |
return 0; |
823 |
if (atom.size <= 40) |
824 |
return 0; |
825 |
st = c->fc->streams[c->fc->nb_streams-1];
|
826 |
|
827 |
if((uint64_t)atom.size > (1<<30)) |
828 |
return -1; |
829 |
|
830 |
av_free(st->codec->extradata); |
831 |
st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
|
832 |
if (!st->codec->extradata)
|
833 |
return AVERROR(ENOMEM);
|
834 |
st->codec->extradata_size = atom.size - 40;
|
835 |
url_fskip(pb, 40);
|
836 |
get_buffer(pb, st->codec->extradata, atom.size - 40);
|
837 |
return 0; |
838 |
} |
839 |
|
840 |
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
841 |
{ |
842 |
AVStream *st; |
843 |
MOVStreamContext *sc; |
844 |
unsigned int i, entries; |
845 |
|
846 |
if (c->fc->nb_streams < 1) |
847 |
return 0; |
848 |
st = c->fc->streams[c->fc->nb_streams-1];
|
849 |
sc = st->priv_data; |
850 |
|
851 |
get_byte(pb); /* version */
|
852 |
get_be24(pb); /* flags */
|
853 |
|
854 |
entries = get_be32(pb); |
855 |
|
856 |
if(entries >= UINT_MAX/sizeof(int64_t)) |
857 |
return -1; |
858 |
|
859 |
sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
|
860 |
if (!sc->chunk_offsets)
|
861 |
return AVERROR(ENOMEM);
|
862 |
sc->chunk_count = entries; |
863 |
|
864 |
if (atom.type == MKTAG('s','t','c','o')) |
865 |
for(i=0; i<entries; i++) |
866 |
sc->chunk_offsets[i] = get_be32(pb); |
867 |
else if (atom.type == MKTAG('c','o','6','4')) |
868 |
for(i=0; i<entries; i++) |
869 |
sc->chunk_offsets[i] = get_be64(pb); |
870 |
else
|
871 |
return -1; |
872 |
|
873 |
return 0; |
874 |
} |
875 |
|
876 |
/**
|
877 |
* Compute codec id for 'lpcm' tag.
|
878 |
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
|
879 |
*/
|
880 |
enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags) |
881 |
{ |
882 |
if (flags & 1) { // floating point |
883 |
if (flags & 2) { // big endian |
884 |
if (bps == 32) return CODEC_ID_PCM_F32BE; |
885 |
else if (bps == 64) return CODEC_ID_PCM_F64BE; |
886 |
} else {
|
887 |
if (bps == 32) return CODEC_ID_PCM_F32LE; |
888 |
else if (bps == 64) return CODEC_ID_PCM_F64LE; |
889 |
} |
890 |
} else {
|
891 |
if (flags & 2) { |
892 |
if (bps == 8) |
893 |
// signed integer
|
894 |
if (flags & 4) return CODEC_ID_PCM_S8; |
895 |
else return CODEC_ID_PCM_U8; |
896 |
else if (bps == 16) return CODEC_ID_PCM_S16BE; |
897 |
else if (bps == 24) return CODEC_ID_PCM_S24BE; |
898 |
else if (bps == 32) return CODEC_ID_PCM_S32BE; |
899 |
} else {
|
900 |
if (bps == 8) |
901 |
if (flags & 4) return CODEC_ID_PCM_S8; |
902 |
else return CODEC_ID_PCM_U8; |
903 |
else if (bps == 16) return CODEC_ID_PCM_S16LE; |
904 |
else if (bps == 24) return CODEC_ID_PCM_S24LE; |
905 |
else if (bps == 32) return CODEC_ID_PCM_S32LE; |
906 |
} |
907 |
} |
908 |
return CODEC_ID_NONE;
|
909 |
} |
910 |
|
911 |
int ff_mov_read_stsd_entries(MOVContext *c, ByteIOContext *pb, int entries) |
912 |
{ |
913 |
AVStream *st; |
914 |
MOVStreamContext *sc; |
915 |
int j, pseudo_stream_id;
|
916 |
|
917 |
if (c->fc->nb_streams < 1) |
918 |
return 0; |
919 |
st = c->fc->streams[c->fc->nb_streams-1];
|
920 |
sc = st->priv_data; |
921 |
|
922 |
for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { |
923 |
//Parsing Sample description table
|
924 |
enum CodecID id;
|
925 |
int dref_id = 1; |
926 |
MOVAtom a = { AV_RL32("stsd") };
|
927 |
int64_t start_pos = url_ftell(pb); |
928 |
int size = get_be32(pb); /* size */ |
929 |
uint32_t format = get_le32(pb); /* data format */
|
930 |
|
931 |
if (size >= 16) { |
932 |
get_be32(pb); /* reserved */
|
933 |
get_be16(pb); /* reserved */
|
934 |
dref_id = get_be16(pb); |
935 |
} |
936 |
|
937 |
if (st->codec->codec_tag &&
|
938 |
st->codec->codec_tag != format && |
939 |
(c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id |
940 |
: st->codec->codec_tag != MKTAG('j','p','e','g')) |
941 |
){ |
942 |
/* Multiple fourcc, we skip JPEG. This is not correct, we should
|
943 |
* export it as a separate AVStream but this needs a few changes
|
944 |
* in the MOV demuxer, patch welcome. */
|
945 |
multiple_stsd:
|
946 |
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
|
947 |
url_fskip(pb, size - (url_ftell(pb) - start_pos)); |
948 |
continue;
|
949 |
} |
950 |
/* we cannot demux concatenated h264 streams because of different extradata */
|
951 |
if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1")) |
952 |
goto multiple_stsd;
|
953 |
sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
|
954 |
sc->dref_id= dref_id; |
955 |
|
956 |
st->codec->codec_tag = format; |
957 |
id = ff_codec_get_id(codec_movaudio_tags, format); |
958 |
if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8))) |
959 |
id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
|
960 |
|
961 |
if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) { |
962 |
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
963 |
} else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */ |
964 |
format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */ |
965 |
id = ff_codec_get_id(codec_movvideo_tags, format); |
966 |
if (id <= 0) |
967 |
id = ff_codec_get_id(ff_codec_bmp_tags, format); |
968 |
if (id > 0) |
969 |
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
970 |
else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){ |
971 |
id = ff_codec_get_id(ff_codec_movsubtitle_tags, format); |
972 |
if(id > 0) |
973 |
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
974 |
} |
975 |
} |
976 |
|
977 |
dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
|
978 |
(format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, |
979 |
(format >> 24) & 0xff, st->codec->codec_type); |
980 |
|
981 |
if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
|
982 |
unsigned int color_depth, len; |
983 |
int color_greyscale;
|
984 |
|
985 |
st->codec->codec_id = id; |
986 |
get_be16(pb); /* version */
|
987 |
get_be16(pb); /* revision level */
|
988 |
get_be32(pb); /* vendor */
|
989 |
get_be32(pb); /* temporal quality */
|
990 |
get_be32(pb); /* spatial quality */
|
991 |
|
992 |
st->codec->width = get_be16(pb); /* width */
|
993 |
st->codec->height = get_be16(pb); /* height */
|
994 |
|
995 |
get_be32(pb); /* horiz resolution */
|
996 |
get_be32(pb); /* vert resolution */
|
997 |
get_be32(pb); /* data size, always 0 */
|
998 |
get_be16(pb); /* frames per samples */
|
999 |
|
1000 |
len = get_byte(pb); /* codec name, pascal string */
|
1001 |
if (len > 31) |
1002 |
len = 31;
|
1003 |
mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
|
1004 |
if (len < 31) |
1005 |
url_fskip(pb, 31 - len);
|
1006 |
/* codec_tag YV12 triggers an UV swap in rawdec.c */
|
1007 |
if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) |
1008 |
st->codec->codec_tag=MKTAG('I', '4', '2', '0'); |
1009 |
|
1010 |
st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
|
1011 |
st->codec->color_table_id = get_be16(pb); /* colortable id */
|
1012 |
dprintf(c->fc, "depth %d, ctab id %d\n",
|
1013 |
st->codec->bits_per_coded_sample, st->codec->color_table_id); |
1014 |
/* figure out the palette situation */
|
1015 |
color_depth = st->codec->bits_per_coded_sample & 0x1F;
|
1016 |
color_greyscale = st->codec->bits_per_coded_sample & 0x20;
|
1017 |
|
1018 |
/* if the depth is 2, 4, or 8 bpp, file is palettized */
|
1019 |
if ((color_depth == 2) || (color_depth == 4) || |
1020 |
(color_depth == 8)) {
|
1021 |
/* for palette traversal */
|
1022 |
unsigned int color_start, color_count, color_end; |
1023 |
unsigned char r, g, b; |
1024 |
|
1025 |
st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
|
1026 |
if (color_greyscale) {
|
1027 |
int color_index, color_dec;
|
1028 |
/* compute the greyscale palette */
|
1029 |
st->codec->bits_per_coded_sample = color_depth; |
1030 |
color_count = 1 << color_depth;
|
1031 |
color_index = 255;
|
1032 |
color_dec = 256 / (color_count - 1); |
1033 |
for (j = 0; j < color_count; j++) { |
1034 |
r = g = b = color_index; |
1035 |
st->codec->palctrl->palette[j] = |
1036 |
(r << 16) | (g << 8) | (b); |
1037 |
color_index -= color_dec; |
1038 |
if (color_index < 0) |
1039 |
color_index = 0;
|
1040 |
} |
1041 |
} else if (st->codec->color_table_id) { |
1042 |
const uint8_t *color_table;
|
1043 |
/* if flag bit 3 is set, use the default palette */
|
1044 |
color_count = 1 << color_depth;
|
1045 |
if (color_depth == 2) |
1046 |
color_table = ff_qt_default_palette_4; |
1047 |
else if (color_depth == 4) |
1048 |
color_table = ff_qt_default_palette_16; |
1049 |
else
|
1050 |
color_table = ff_qt_default_palette_256; |
1051 |
|
1052 |
for (j = 0; j < color_count; j++) { |
1053 |
r = color_table[j * 3 + 0]; |
1054 |
g = color_table[j * 3 + 1]; |
1055 |
b = color_table[j * 3 + 2]; |
1056 |
st->codec->palctrl->palette[j] = |
1057 |
(r << 16) | (g << 8) | (b); |
1058 |
} |
1059 |
} else {
|
1060 |
/* load the palette from the file */
|
1061 |
color_start = get_be32(pb); |
1062 |
color_count = get_be16(pb); |
1063 |
color_end = get_be16(pb); |
1064 |
if ((color_start <= 255) && |
1065 |
(color_end <= 255)) {
|
1066 |
for (j = color_start; j <= color_end; j++) {
|
1067 |
/* each R, G, or B component is 16 bits;
|
1068 |
* only use the top 8 bits; skip alpha bytes
|
1069 |
* up front */
|
1070 |
get_byte(pb); |
1071 |
get_byte(pb); |
1072 |
r = get_byte(pb); |
1073 |
get_byte(pb); |
1074 |
g = get_byte(pb); |
1075 |
get_byte(pb); |
1076 |
b = get_byte(pb); |
1077 |
get_byte(pb); |
1078 |
st->codec->palctrl->palette[j] = |
1079 |
(r << 16) | (g << 8) | (b); |
1080 |
} |
1081 |
} |
1082 |
} |
1083 |
st->codec->palctrl->palette_changed = 1;
|
1084 |
} |
1085 |
} else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) { |
1086 |
int bits_per_sample, flags;
|
1087 |
uint16_t version = get_be16(pb); |
1088 |
|
1089 |
st->codec->codec_id = id; |
1090 |
get_be16(pb); /* revision level */
|
1091 |
get_be32(pb); /* vendor */
|
1092 |
|
1093 |
st->codec->channels = get_be16(pb); /* channel count */
|
1094 |
dprintf(c->fc, "audio channels %d\n", st->codec->channels);
|
1095 |
st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
|
1096 |
|
1097 |
sc->audio_cid = get_be16(pb); |
1098 |
get_be16(pb); /* packet size = 0 */
|
1099 |
|
1100 |
st->codec->sample_rate = ((get_be32(pb) >> 16));
|
1101 |
|
1102 |
//Read QT version 1 fields. In version 0 these do not exist.
|
1103 |
dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
|
1104 |
if(!c->isom) {
|
1105 |
if(version==1) { |
1106 |
sc->samples_per_frame = get_be32(pb); |
1107 |
get_be32(pb); /* bytes per packet */
|
1108 |
sc->bytes_per_frame = get_be32(pb); |
1109 |
get_be32(pb); /* bytes per sample */
|
1110 |
} else if(version==2) { |
1111 |
get_be32(pb); /* sizeof struct only */
|
1112 |
st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
|
1113 |
st->codec->channels = get_be32(pb); |
1114 |
get_be32(pb); /* always 0x7F000000 */
|
1115 |
st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
|
1116 |
flags = get_be32(pb); /* lpcm format specific flag */
|
1117 |
sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
|
1118 |
sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
|
1119 |
if (format == MKTAG('l','p','c','m')) |
1120 |
st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags); |
1121 |
} |
1122 |
} |
1123 |
|
1124 |
switch (st->codec->codec_id) {
|
1125 |
case CODEC_ID_PCM_S8:
|
1126 |
case CODEC_ID_PCM_U8:
|
1127 |
if (st->codec->bits_per_coded_sample == 16) |
1128 |
st->codec->codec_id = CODEC_ID_PCM_S16BE; |
1129 |
break;
|
1130 |
case CODEC_ID_PCM_S16LE:
|
1131 |
case CODEC_ID_PCM_S16BE:
|
1132 |
if (st->codec->bits_per_coded_sample == 8) |
1133 |
st->codec->codec_id = CODEC_ID_PCM_S8; |
1134 |
else if (st->codec->bits_per_coded_sample == 24) |
1135 |
st->codec->codec_id = |
1136 |
st->codec->codec_id == CODEC_ID_PCM_S16BE ? |
1137 |
CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE; |
1138 |
break;
|
1139 |
/* set values for old format before stsd version 1 appeared */
|
1140 |
case CODEC_ID_MACE3:
|
1141 |
sc->samples_per_frame = 6;
|
1142 |
sc->bytes_per_frame = 2*st->codec->channels;
|
1143 |
break;
|
1144 |
case CODEC_ID_MACE6:
|
1145 |
sc->samples_per_frame = 6;
|
1146 |
sc->bytes_per_frame = 1*st->codec->channels;
|
1147 |
break;
|
1148 |
case CODEC_ID_ADPCM_IMA_QT:
|
1149 |
sc->samples_per_frame = 64;
|
1150 |
sc->bytes_per_frame = 34*st->codec->channels;
|
1151 |
break;
|
1152 |
case CODEC_ID_GSM:
|
1153 |
sc->samples_per_frame = 160;
|
1154 |
sc->bytes_per_frame = 33;
|
1155 |
break;
|
1156 |
default:
|
1157 |
break;
|
1158 |
} |
1159 |
|
1160 |
bits_per_sample = av_get_bits_per_sample(st->codec->codec_id); |
1161 |
if (bits_per_sample) {
|
1162 |
st->codec->bits_per_coded_sample = bits_per_sample; |
1163 |
sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
|
1164 |
} |
1165 |
} else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){ |
1166 |
// ttxt stsd contains display flags, justification, background
|
1167 |
// color, fonts, and default styles, so fake an atom to read it
|
1168 |
MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) }; |
1169 |
if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom |
1170 |
mov_read_glbl(c, pb, fake_atom); |
1171 |
st->codec->codec_id= id; |
1172 |
st->codec->width = sc->width; |
1173 |
st->codec->height = sc->height; |
1174 |
} else {
|
1175 |
/* other codec type, just skip (rtp, mp4s, tmcd ...) */
|
1176 |
url_fskip(pb, size - (url_ftell(pb) - start_pos)); |
1177 |
} |
1178 |
/* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
|
1179 |
a.size = size - (url_ftell(pb) - start_pos); |
1180 |
if (a.size > 8) { |
1181 |
if (mov_read_default(c, pb, a) < 0) |
1182 |
return -1; |
1183 |
} else if (a.size > 0) |
1184 |
url_fskip(pb, a.size); |
1185 |
} |
1186 |
|
1187 |
if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) |
1188 |
st->codec->sample_rate= sc->time_scale; |
1189 |
|
1190 |
/* special codec parameters handling */
|
1191 |
switch (st->codec->codec_id) {
|
1192 |
#if CONFIG_DV_DEMUXER
|
1193 |
case CODEC_ID_DVAUDIO:
|
1194 |
c->dv_fctx = avformat_alloc_context(); |
1195 |
c->dv_demux = dv_init_demux(c->dv_fctx); |
1196 |
if (!c->dv_demux) {
|
1197 |
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
|
1198 |
return -1; |
1199 |
} |
1200 |
sc->dv_audio_container = 1;
|
1201 |
st->codec->codec_id = CODEC_ID_PCM_S16LE; |
1202 |
break;
|
1203 |
#endif
|
1204 |
/* no ifdef since parameters are always those */
|
1205 |
case CODEC_ID_QCELP:
|
1206 |
// force sample rate for qcelp when not stored in mov
|
1207 |
if (st->codec->codec_tag != MKTAG('Q','c','l','p')) |
1208 |
st->codec->sample_rate = 8000;
|
1209 |
st->codec->frame_size= 160;
|
1210 |
st->codec->channels= 1; /* really needed */ |
1211 |
break;
|
1212 |
case CODEC_ID_AMR_NB:
|
1213 |
case CODEC_ID_AMR_WB:
|
1214 |
st->codec->frame_size= sc->samples_per_frame; |
1215 |
st->codec->channels= 1; /* really needed */ |
1216 |
/* force sample rate for amr, stsd in 3gp does not store sample rate */
|
1217 |
if (st->codec->codec_id == CODEC_ID_AMR_NB)
|
1218 |
st->codec->sample_rate = 8000;
|
1219 |
else if (st->codec->codec_id == CODEC_ID_AMR_WB) |
1220 |
st->codec->sample_rate = 16000;
|
1221 |
break;
|
1222 |
case CODEC_ID_MP2:
|
1223 |
case CODEC_ID_MP3:
|
1224 |
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
|
1225 |
st->need_parsing = AVSTREAM_PARSE_FULL; |
1226 |
break;
|
1227 |
case CODEC_ID_GSM:
|
1228 |
case CODEC_ID_ADPCM_MS:
|
1229 |
case CODEC_ID_ADPCM_IMA_WAV:
|
1230 |
st->codec->frame_size = sc->samples_per_frame; |
1231 |
st->codec->block_align = sc->bytes_per_frame; |
1232 |
break;
|
1233 |
case CODEC_ID_ALAC:
|
1234 |
if (st->codec->extradata_size == 36) { |
1235 |
st->codec->frame_size = AV_RB32(st->codec->extradata+12);
|
1236 |
st->codec->channels = AV_RB8 (st->codec->extradata+21);
|
1237 |
st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
|
1238 |
} |
1239 |
break;
|
1240 |
default:
|
1241 |
break;
|
1242 |
} |
1243 |
|
1244 |
return 0; |
1245 |
} |
1246 |
|
1247 |
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1248 |
{ |
1249 |
int entries;
|
1250 |
|
1251 |
get_byte(pb); /* version */
|
1252 |
get_be24(pb); /* flags */
|
1253 |
entries = get_be32(pb); |
1254 |
|
1255 |
return ff_mov_read_stsd_entries(c, pb, entries);
|
1256 |
} |
1257 |
|
1258 |
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1259 |
{ |
1260 |
AVStream *st; |
1261 |
MOVStreamContext *sc; |
1262 |
unsigned int i, entries; |
1263 |
|
1264 |
if (c->fc->nb_streams < 1) |
1265 |
return 0; |
1266 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1267 |
sc = st->priv_data; |
1268 |
|
1269 |
get_byte(pb); /* version */
|
1270 |
get_be24(pb); /* flags */
|
1271 |
|
1272 |
entries = get_be32(pb); |
1273 |
|
1274 |
dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries); |
1275 |
|
1276 |
if(entries >= UINT_MAX / sizeof(*sc->stsc_data)) |
1277 |
return -1; |
1278 |
sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
|
1279 |
if (!sc->stsc_data)
|
1280 |
return AVERROR(ENOMEM);
|
1281 |
sc->stsc_count = entries; |
1282 |
|
1283 |
for(i=0; i<entries; i++) { |
1284 |
sc->stsc_data[i].first = get_be32(pb); |
1285 |
sc->stsc_data[i].count = get_be32(pb); |
1286 |
sc->stsc_data[i].id = get_be32(pb); |
1287 |
} |
1288 |
return 0; |
1289 |
} |
1290 |
|
1291 |
static int mov_read_stps(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1292 |
{ |
1293 |
AVStream *st; |
1294 |
MOVStreamContext *sc; |
1295 |
unsigned i, entries;
|
1296 |
|
1297 |
if (c->fc->nb_streams < 1) |
1298 |
return 0; |
1299 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1300 |
sc = st->priv_data; |
1301 |
|
1302 |
get_be32(pb); // version + flags
|
1303 |
|
1304 |
entries = get_be32(pb); |
1305 |
if (entries >= UINT_MAX / sizeof(*sc->stps_data)) |
1306 |
return -1; |
1307 |
sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
|
1308 |
if (!sc->stps_data)
|
1309 |
return AVERROR(ENOMEM);
|
1310 |
sc->stps_count = entries; |
1311 |
|
1312 |
for (i = 0; i < entries; i++) { |
1313 |
sc->stps_data[i] = get_be32(pb); |
1314 |
//dprintf(c->fc, "stps %d\n", sc->stps_data[i]);
|
1315 |
} |
1316 |
|
1317 |
return 0; |
1318 |
} |
1319 |
|
1320 |
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1321 |
{ |
1322 |
AVStream *st; |
1323 |
MOVStreamContext *sc; |
1324 |
unsigned int i, entries; |
1325 |
|
1326 |
if (c->fc->nb_streams < 1) |
1327 |
return 0; |
1328 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1329 |
sc = st->priv_data; |
1330 |
|
1331 |
get_byte(pb); /* version */
|
1332 |
get_be24(pb); /* flags */
|
1333 |
|
1334 |
entries = get_be32(pb); |
1335 |
|
1336 |
dprintf(c->fc, "keyframe_count = %d\n", entries);
|
1337 |
|
1338 |
if(entries >= UINT_MAX / sizeof(int)) |
1339 |
return -1; |
1340 |
sc->keyframes = av_malloc(entries * sizeof(int)); |
1341 |
if (!sc->keyframes)
|
1342 |
return AVERROR(ENOMEM);
|
1343 |
sc->keyframe_count = entries; |
1344 |
|
1345 |
for(i=0; i<entries; i++) { |
1346 |
sc->keyframes[i] = get_be32(pb); |
1347 |
//dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
|
1348 |
} |
1349 |
return 0; |
1350 |
} |
1351 |
|
1352 |
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1353 |
{ |
1354 |
AVStream *st; |
1355 |
MOVStreamContext *sc; |
1356 |
unsigned int i, entries, sample_size, field_size, num_bytes; |
1357 |
GetBitContext gb; |
1358 |
unsigned char* buf; |
1359 |
|
1360 |
if (c->fc->nb_streams < 1) |
1361 |
return 0; |
1362 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1363 |
sc = st->priv_data; |
1364 |
|
1365 |
get_byte(pb); /* version */
|
1366 |
get_be24(pb); /* flags */
|
1367 |
|
1368 |
if (atom.type == MKTAG('s','t','s','z')) { |
1369 |
sample_size = get_be32(pb); |
1370 |
if (!sc->sample_size) /* do not overwrite value computed in stsd */ |
1371 |
sc->sample_size = sample_size; |
1372 |
field_size = 32;
|
1373 |
} else {
|
1374 |
sample_size = 0;
|
1375 |
get_be24(pb); /* reserved */
|
1376 |
field_size = get_byte(pb); |
1377 |
} |
1378 |
entries = get_be32(pb); |
1379 |
|
1380 |
dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
|
1381 |
|
1382 |
sc->sample_count = entries; |
1383 |
if (sample_size)
|
1384 |
return 0; |
1385 |
|
1386 |
if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) { |
1387 |
av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
|
1388 |
return -1; |
1389 |
} |
1390 |
|
1391 |
if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size) |
1392 |
return -1; |
1393 |
sc->sample_sizes = av_malloc(entries * sizeof(int)); |
1394 |
if (!sc->sample_sizes)
|
1395 |
return AVERROR(ENOMEM);
|
1396 |
|
1397 |
num_bytes = (entries*field_size+4)>>3; |
1398 |
|
1399 |
buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE); |
1400 |
if (!buf) {
|
1401 |
av_freep(&sc->sample_sizes); |
1402 |
return AVERROR(ENOMEM);
|
1403 |
} |
1404 |
|
1405 |
if (get_buffer(pb, buf, num_bytes) < num_bytes) {
|
1406 |
av_freep(&sc->sample_sizes); |
1407 |
av_free(buf); |
1408 |
return -1; |
1409 |
} |
1410 |
|
1411 |
init_get_bits(&gb, buf, 8*num_bytes);
|
1412 |
|
1413 |
for(i=0; i<entries; i++) |
1414 |
sc->sample_sizes[i] = get_bits_long(&gb, field_size); |
1415 |
|
1416 |
av_free(buf); |
1417 |
return 0; |
1418 |
} |
1419 |
|
1420 |
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1421 |
{ |
1422 |
AVStream *st; |
1423 |
MOVStreamContext *sc; |
1424 |
unsigned int i, entries; |
1425 |
int64_t duration=0;
|
1426 |
int64_t total_sample_count=0;
|
1427 |
|
1428 |
if (c->fc->nb_streams < 1) |
1429 |
return 0; |
1430 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1431 |
sc = st->priv_data; |
1432 |
|
1433 |
get_byte(pb); /* version */
|
1434 |
get_be24(pb); /* flags */
|
1435 |
entries = get_be32(pb); |
1436 |
|
1437 |
dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries); |
1438 |
|
1439 |
if(entries >= UINT_MAX / sizeof(*sc->stts_data)) |
1440 |
return -1; |
1441 |
sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
|
1442 |
if (!sc->stts_data)
|
1443 |
return AVERROR(ENOMEM);
|
1444 |
sc->stts_count = entries; |
1445 |
|
1446 |
for(i=0; i<entries; i++) { |
1447 |
int sample_duration;
|
1448 |
int sample_count;
|
1449 |
|
1450 |
sample_count=get_be32(pb); |
1451 |
sample_duration = get_be32(pb); |
1452 |
sc->stts_data[i].count= sample_count; |
1453 |
sc->stts_data[i].duration= sample_duration; |
1454 |
|
1455 |
dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
|
1456 |
|
1457 |
duration+=(int64_t)sample_duration*sample_count; |
1458 |
total_sample_count+=sample_count; |
1459 |
} |
1460 |
|
1461 |
st->nb_frames= total_sample_count; |
1462 |
if(duration)
|
1463 |
st->duration= duration; |
1464 |
return 0; |
1465 |
} |
1466 |
|
1467 |
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1468 |
{ |
1469 |
AVStream *st; |
1470 |
MOVStreamContext *sc; |
1471 |
unsigned int i, entries; |
1472 |
|
1473 |
if (c->fc->nb_streams < 1) |
1474 |
return 0; |
1475 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1476 |
sc = st->priv_data; |
1477 |
|
1478 |
get_byte(pb); /* version */
|
1479 |
get_be24(pb); /* flags */
|
1480 |
entries = get_be32(pb); |
1481 |
|
1482 |
dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries); |
1483 |
|
1484 |
if(entries >= UINT_MAX / sizeof(*sc->ctts_data)) |
1485 |
return -1; |
1486 |
sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
|
1487 |
if (!sc->ctts_data)
|
1488 |
return AVERROR(ENOMEM);
|
1489 |
sc->ctts_count = entries; |
1490 |
|
1491 |
for(i=0; i<entries; i++) { |
1492 |
int count =get_be32(pb);
|
1493 |
int duration =get_be32(pb);
|
1494 |
|
1495 |
sc->ctts_data[i].count = count; |
1496 |
sc->ctts_data[i].duration= duration; |
1497 |
if (duration < 0) |
1498 |
sc->dts_shift = FFMAX(sc->dts_shift, -duration); |
1499 |
} |
1500 |
|
1501 |
dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
|
1502 |
|
1503 |
return 0; |
1504 |
} |
1505 |
|
1506 |
static void mov_build_index(MOVContext *mov, AVStream *st) |
1507 |
{ |
1508 |
MOVStreamContext *sc = st->priv_data; |
1509 |
int64_t current_offset; |
1510 |
int64_t current_dts = 0;
|
1511 |
unsigned int stts_index = 0; |
1512 |
unsigned int stsc_index = 0; |
1513 |
unsigned int stss_index = 0; |
1514 |
unsigned int stps_index = 0; |
1515 |
unsigned int i, j; |
1516 |
uint64_t stream_size = 0;
|
1517 |
|
1518 |
/* adjust first dts according to edit list */
|
1519 |
if (sc->time_offset && mov->time_scale > 0) { |
1520 |
int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset; |
1521 |
current_dts = -rescaled; |
1522 |
if (sc->ctts_data && sc->stts_data &&
|
1523 |
sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) { |
1524 |
/* more than 16 frames delay, dts are likely wrong
|
1525 |
this happens with files created by iMovie */
|
1526 |
sc->wrong_dts = 1;
|
1527 |
st->codec->has_b_frames = 1;
|
1528 |
} |
1529 |
} |
1530 |
|
1531 |
/* only use old uncompressed audio chunk demuxing when stts specifies it */
|
1532 |
if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
|
1533 |
sc->stts_count == 1 && sc->stts_data[0].duration == 1)) { |
1534 |
unsigned int current_sample = 0; |
1535 |
unsigned int stts_sample = 0; |
1536 |
unsigned int sample_size; |
1537 |
unsigned int distance = 0; |
1538 |
int key_off = sc->keyframes && sc->keyframes[0] == 1; |
1539 |
|
1540 |
current_dts -= sc->dts_shift; |
1541 |
|
1542 |
if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries)) |
1543 |
return;
|
1544 |
st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
|
1545 |
if (!st->index_entries)
|
1546 |
return;
|
1547 |
st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
|
1548 |
|
1549 |
for (i = 0; i < sc->chunk_count; i++) { |
1550 |
current_offset = sc->chunk_offsets[i]; |
1551 |
if (stsc_index + 1 < sc->stsc_count && |
1552 |
i + 1 == sc->stsc_data[stsc_index + 1].first) |
1553 |
stsc_index++; |
1554 |
for (j = 0; j < sc->stsc_data[stsc_index].count; j++) { |
1555 |
int keyframe = 0; |
1556 |
if (current_sample >= sc->sample_count) {
|
1557 |
av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
|
1558 |
return;
|
1559 |
} |
1560 |
|
1561 |
if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
|
1562 |
keyframe = 1;
|
1563 |
if (stss_index + 1 < sc->keyframe_count) |
1564 |
stss_index++; |
1565 |
} else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) { |
1566 |
keyframe = 1;
|
1567 |
if (stps_index + 1 < sc->stps_count) |
1568 |
stps_index++; |
1569 |
} |
1570 |
if (keyframe)
|
1571 |
distance = 0;
|
1572 |
sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
|
1573 |
if(sc->pseudo_stream_id == -1 || |
1574 |
sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
|
1575 |
AVIndexEntry *e = &st->index_entries[st->nb_index_entries++]; |
1576 |
e->pos = current_offset; |
1577 |
e->timestamp = current_dts; |
1578 |
e->size = sample_size; |
1579 |
e->min_distance = distance; |
1580 |
e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
|
1581 |
dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
1582 |
"size %d, distance %d, keyframe %d\n", st->index, current_sample,
|
1583 |
current_offset, current_dts, sample_size, distance, keyframe); |
1584 |
} |
1585 |
|
1586 |
current_offset += sample_size; |
1587 |
stream_size += sample_size; |
1588 |
current_dts += sc->stts_data[stts_index].duration; |
1589 |
distance++; |
1590 |
stts_sample++; |
1591 |
current_sample++; |
1592 |
if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) { |
1593 |
stts_sample = 0;
|
1594 |
stts_index++; |
1595 |
} |
1596 |
} |
1597 |
} |
1598 |
if (st->duration > 0) |
1599 |
st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
|
1600 |
} else {
|
1601 |
unsigned chunk_samples, total = 0; |
1602 |
|
1603 |
// compute total chunk count
|
1604 |
for (i = 0; i < sc->stsc_count; i++) { |
1605 |
unsigned count, chunk_count;
|
1606 |
|
1607 |
chunk_samples = sc->stsc_data[i].count; |
1608 |
if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
|
1609 |
av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
|
1610 |
return;
|
1611 |
} |
1612 |
|
1613 |
if (sc->samples_per_frame >= 160) { // gsm |
1614 |
count = chunk_samples / sc->samples_per_frame; |
1615 |
} else if (sc->samples_per_frame > 1) { |
1616 |
unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame; |
1617 |
count = (chunk_samples+samples-1) / samples;
|
1618 |
} else {
|
1619 |
count = (chunk_samples+1023) / 1024; |
1620 |
} |
1621 |
|
1622 |
if (i < sc->stsc_count - 1) |
1623 |
chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
|
1624 |
else
|
1625 |
chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
|
1626 |
total += chunk_count * count; |
1627 |
} |
1628 |
|
1629 |
dprintf(mov->fc, "chunk count %d\n", total);
|
1630 |
if (total >= UINT_MAX / sizeof(*st->index_entries)) |
1631 |
return;
|
1632 |
st->index_entries = av_malloc(total*sizeof(*st->index_entries));
|
1633 |
if (!st->index_entries)
|
1634 |
return;
|
1635 |
st->index_entries_allocated_size = total*sizeof(*st->index_entries);
|
1636 |
|
1637 |
// populate index
|
1638 |
for (i = 0; i < sc->chunk_count; i++) { |
1639 |
current_offset = sc->chunk_offsets[i]; |
1640 |
if (stsc_index + 1 < sc->stsc_count && |
1641 |
i + 1 == sc->stsc_data[stsc_index + 1].first) |
1642 |
stsc_index++; |
1643 |
chunk_samples = sc->stsc_data[stsc_index].count; |
1644 |
|
1645 |
while (chunk_samples > 0) { |
1646 |
AVIndexEntry *e; |
1647 |
unsigned size, samples;
|
1648 |
|
1649 |
if (sc->samples_per_frame >= 160) { // gsm |
1650 |
samples = sc->samples_per_frame; |
1651 |
size = sc->bytes_per_frame; |
1652 |
} else {
|
1653 |
if (sc->samples_per_frame > 1) { |
1654 |
samples = FFMIN((1024 / sc->samples_per_frame)*
|
1655 |
sc->samples_per_frame, chunk_samples); |
1656 |
size = (samples / sc->samples_per_frame) * sc->bytes_per_frame; |
1657 |
} else {
|
1658 |
samples = FFMIN(1024, chunk_samples);
|
1659 |
size = samples * sc->sample_size; |
1660 |
} |
1661 |
} |
1662 |
|
1663 |
if (st->nb_index_entries >= total) {
|
1664 |
av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
|
1665 |
return;
|
1666 |
} |
1667 |
e = &st->index_entries[st->nb_index_entries++]; |
1668 |
e->pos = current_offset; |
1669 |
e->timestamp = current_dts; |
1670 |
e->size = size; |
1671 |
e->min_distance = 0;
|
1672 |
e->flags = AVINDEX_KEYFRAME; |
1673 |
dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", " |
1674 |
"size %d, duration %d\n", st->index, i, current_offset, current_dts,
|
1675 |
size, samples); |
1676 |
|
1677 |
current_offset += size; |
1678 |
current_dts += samples; |
1679 |
chunk_samples -= samples; |
1680 |
} |
1681 |
} |
1682 |
} |
1683 |
} |
1684 |
|
1685 |
static int mov_open_dref(ByteIOContext **pb, char *src, MOVDref *ref) |
1686 |
{ |
1687 |
/* try relative path, we do not try the absolute because it can leak information about our
|
1688 |
system to an attacker */
|
1689 |
if (ref->nlvl_to > 0 && ref->nlvl_from > 0) { |
1690 |
char filename[1024]; |
1691 |
char *src_path;
|
1692 |
int i, l;
|
1693 |
|
1694 |
/* find a source dir */
|
1695 |
src_path = strrchr(src, '/');
|
1696 |
if (src_path)
|
1697 |
src_path++; |
1698 |
else
|
1699 |
src_path = src; |
1700 |
|
1701 |
/* find a next level down to target */
|
1702 |
for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--) |
1703 |
if (ref->path[l] == '/') { |
1704 |
if (i == ref->nlvl_to - 1) |
1705 |
break;
|
1706 |
else
|
1707 |
i++; |
1708 |
} |
1709 |
|
1710 |
/* compose filename if next level down to target was found */
|
1711 |
if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) { |
1712 |
memcpy(filename, src, src_path - src); |
1713 |
filename[src_path - src] = 0;
|
1714 |
|
1715 |
for (i = 1; i < ref->nlvl_from; i++) |
1716 |
av_strlcat(filename, "../", 1024); |
1717 |
|
1718 |
av_strlcat(filename, ref->path + l + 1, 1024); |
1719 |
|
1720 |
if (!url_fopen(pb, filename, URL_RDONLY))
|
1721 |
return 0; |
1722 |
} |
1723 |
} |
1724 |
|
1725 |
return AVERROR(ENOENT);
|
1726 |
}; |
1727 |
|
1728 |
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1729 |
{ |
1730 |
AVStream *st; |
1731 |
MOVStreamContext *sc; |
1732 |
int ret;
|
1733 |
|
1734 |
st = av_new_stream(c->fc, c->fc->nb_streams); |
1735 |
if (!st) return AVERROR(ENOMEM); |
1736 |
sc = av_mallocz(sizeof(MOVStreamContext));
|
1737 |
if (!sc) return AVERROR(ENOMEM); |
1738 |
|
1739 |
st->priv_data = sc; |
1740 |
st->codec->codec_type = AVMEDIA_TYPE_DATA; |
1741 |
sc->ffindex = st->index; |
1742 |
|
1743 |
if ((ret = mov_read_default(c, pb, atom)) < 0) |
1744 |
return ret;
|
1745 |
|
1746 |
/* sanity checks */
|
1747 |
if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
|
1748 |
(!sc->sample_size && !sc->sample_count))) { |
1749 |
av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
|
1750 |
st->index); |
1751 |
return 0; |
1752 |
} |
1753 |
|
1754 |
if (sc->time_scale <= 0) { |
1755 |
av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
|
1756 |
sc->time_scale = c->time_scale; |
1757 |
if (sc->time_scale <= 0) |
1758 |
sc->time_scale = 1;
|
1759 |
} |
1760 |
|
1761 |
av_set_pts_info(st, 64, 1, sc->time_scale); |
1762 |
|
1763 |
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
|
1764 |
!st->codec->frame_size && sc->stts_count == 1) {
|
1765 |
st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
|
1766 |
st->codec->sample_rate, sc->time_scale); |
1767 |
dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
|
1768 |
} |
1769 |
|
1770 |
mov_build_index(c, st); |
1771 |
|
1772 |
if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { |
1773 |
MOVDref *dref = &sc->drefs[sc->dref_id - 1];
|
1774 |
if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0) |
1775 |
av_log(c->fc, AV_LOG_ERROR, |
1776 |
"stream %d, error opening alias: path='%s', dir='%s', "
|
1777 |
"filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
|
1778 |
st->index, dref->path, dref->dir, dref->filename, |
1779 |
dref->volume, dref->nlvl_from, dref->nlvl_to); |
1780 |
} else
|
1781 |
sc->pb = c->fc->pb; |
1782 |
|
1783 |
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
1784 |
if (!st->sample_aspect_ratio.num &&
|
1785 |
(st->codec->width != sc->width || st->codec->height != sc->height)) { |
1786 |
st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
|
1787 |
((double)st->codec->width * sc->height), INT_MAX);
|
1788 |
} |
1789 |
|
1790 |
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, |
1791 |
sc->time_scale*st->nb_frames, st->duration, INT_MAX); |
1792 |
|
1793 |
if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1)) |
1794 |
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, |
1795 |
sc->time_scale, sc->stts_data[0].duration, INT_MAX);
|
1796 |
} |
1797 |
|
1798 |
switch (st->codec->codec_id) {
|
1799 |
#if CONFIG_H261_DECODER
|
1800 |
case CODEC_ID_H261:
|
1801 |
#endif
|
1802 |
#if CONFIG_H263_DECODER
|
1803 |
case CODEC_ID_H263:
|
1804 |
#endif
|
1805 |
#if CONFIG_H264_DECODER
|
1806 |
case CODEC_ID_H264:
|
1807 |
#endif
|
1808 |
#if CONFIG_MPEG4_DECODER
|
1809 |
case CODEC_ID_MPEG4:
|
1810 |
#endif
|
1811 |
st->codec->width = 0; /* let decoder init width/height */ |
1812 |
st->codec->height= 0;
|
1813 |
break;
|
1814 |
} |
1815 |
|
1816 |
/* Do not need those anymore. */
|
1817 |
av_freep(&sc->chunk_offsets); |
1818 |
av_freep(&sc->stsc_data); |
1819 |
av_freep(&sc->sample_sizes); |
1820 |
av_freep(&sc->keyframes); |
1821 |
av_freep(&sc->stts_data); |
1822 |
av_freep(&sc->stps_data); |
1823 |
|
1824 |
return 0; |
1825 |
} |
1826 |
|
1827 |
static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1828 |
{ |
1829 |
int ret;
|
1830 |
c->itunes_metadata = 1;
|
1831 |
ret = mov_read_default(c, pb, atom); |
1832 |
c->itunes_metadata = 0;
|
1833 |
return ret;
|
1834 |
} |
1835 |
|
1836 |
static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1837 |
{ |
1838 |
while (atom.size > 8) { |
1839 |
uint32_t tag = get_le32(pb); |
1840 |
atom.size -= 4;
|
1841 |
if (tag == MKTAG('h','d','l','r')) { |
1842 |
url_fseek(pb, -8, SEEK_CUR);
|
1843 |
atom.size += 8;
|
1844 |
return mov_read_default(c, pb, atom);
|
1845 |
} |
1846 |
} |
1847 |
return 0; |
1848 |
} |
1849 |
|
1850 |
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1851 |
{ |
1852 |
int i;
|
1853 |
int width;
|
1854 |
int height;
|
1855 |
int64_t disp_transform[2];
|
1856 |
int display_matrix[3][2]; |
1857 |
AVStream *st; |
1858 |
MOVStreamContext *sc; |
1859 |
int version;
|
1860 |
|
1861 |
if (c->fc->nb_streams < 1) |
1862 |
return 0; |
1863 |
st = c->fc->streams[c->fc->nb_streams-1];
|
1864 |
sc = st->priv_data; |
1865 |
|
1866 |
version = get_byte(pb); |
1867 |
get_be24(pb); /* flags */
|
1868 |
/*
|
1869 |
MOV_TRACK_ENABLED 0x0001
|
1870 |
MOV_TRACK_IN_MOVIE 0x0002
|
1871 |
MOV_TRACK_IN_PREVIEW 0x0004
|
1872 |
MOV_TRACK_IN_POSTER 0x0008
|
1873 |
*/
|
1874 |
|
1875 |
if (version == 1) { |
1876 |
get_be64(pb); |
1877 |
get_be64(pb); |
1878 |
} else {
|
1879 |
get_be32(pb); /* creation time */
|
1880 |
get_be32(pb); /* modification time */
|
1881 |
} |
1882 |
st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/ |
1883 |
get_be32(pb); /* reserved */
|
1884 |
|
1885 |
/* highlevel (considering edits) duration in movie timebase */
|
1886 |
(version == 1) ? get_be64(pb) : get_be32(pb);
|
1887 |
get_be32(pb); /* reserved */
|
1888 |
get_be32(pb); /* reserved */
|
1889 |
|
1890 |
get_be16(pb); /* layer */
|
1891 |
get_be16(pb); /* alternate group */
|
1892 |
get_be16(pb); /* volume */
|
1893 |
get_be16(pb); /* reserved */
|
1894 |
|
1895 |
//read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
|
1896 |
// they're kept in fixed point format through all calculations
|
1897 |
// ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
|
1898 |
for (i = 0; i < 3; i++) { |
1899 |
display_matrix[i][0] = get_be32(pb); // 16.16 fixed point |
1900 |
display_matrix[i][1] = get_be32(pb); // 16.16 fixed point |
1901 |
get_be32(pb); // 2.30 fixed point (not used)
|
1902 |
} |
1903 |
|
1904 |
width = get_be32(pb); // 16.16 fixed point track width
|
1905 |
height = get_be32(pb); // 16.16 fixed point track height
|
1906 |
sc->width = width >> 16;
|
1907 |
sc->height = height >> 16;
|
1908 |
|
1909 |
// transform the display width/height according to the matrix
|
1910 |
// skip this if the display matrix is the default identity matrix
|
1911 |
// or if it is rotating the picture, ex iPhone 3GS
|
1912 |
// to keep the same scale, use [width height 1<<16]
|
1913 |
if (width && height &&
|
1914 |
((display_matrix[0][0] != 65536 || |
1915 |
display_matrix[1][1] != 65536) && |
1916 |
!display_matrix[0][1] && |
1917 |
!display_matrix[1][0] && |
1918 |
!display_matrix[2][0] && !display_matrix[2][1])) { |
1919 |
for (i = 0; i < 2; i++) |
1920 |
disp_transform[i] = |
1921 |
(int64_t) width * display_matrix[0][i] +
|
1922 |
(int64_t) height * display_matrix[1][i] +
|
1923 |
((int64_t) display_matrix[2][i] << 16); |
1924 |
|
1925 |
//sample aspect ratio is new width/height divided by old width/height
|
1926 |
st->sample_aspect_ratio = av_d2q( |
1927 |
((double) disp_transform[0] * height) / |
1928 |
((double) disp_transform[1] * width), INT_MAX); |
1929 |
} |
1930 |
return 0; |
1931 |
} |
1932 |
|
1933 |
static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1934 |
{ |
1935 |
MOVFragment *frag = &c->fragment; |
1936 |
MOVTrackExt *trex = NULL;
|
1937 |
int flags, track_id, i;
|
1938 |
|
1939 |
get_byte(pb); /* version */
|
1940 |
flags = get_be24(pb); |
1941 |
|
1942 |
track_id = get_be32(pb); |
1943 |
if (!track_id)
|
1944 |
return -1; |
1945 |
frag->track_id = track_id; |
1946 |
for (i = 0; i < c->trex_count; i++) |
1947 |
if (c->trex_data[i].track_id == frag->track_id) {
|
1948 |
trex = &c->trex_data[i]; |
1949 |
break;
|
1950 |
} |
1951 |
if (!trex) {
|
1952 |
av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
|
1953 |
return -1; |
1954 |
} |
1955 |
|
1956 |
if (flags & 0x01) frag->base_data_offset = get_be64(pb); |
1957 |
else frag->base_data_offset = frag->moof_offset;
|
1958 |
if (flags & 0x02) frag->stsd_id = get_be32(pb); |
1959 |
else frag->stsd_id = trex->stsd_id;
|
1960 |
|
1961 |
frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
|
1962 |
frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
|
1963 |
frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
|
1964 |
dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
|
1965 |
return 0; |
1966 |
} |
1967 |
|
1968 |
static int mov_read_chap(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1969 |
{ |
1970 |
c->chapter_track = get_be32(pb); |
1971 |
return 0; |
1972 |
} |
1973 |
|
1974 |
static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1975 |
{ |
1976 |
MOVTrackExt *trex; |
1977 |
|
1978 |
if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) |
1979 |
return -1; |
1980 |
trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data)); |
1981 |
if (!trex)
|
1982 |
return AVERROR(ENOMEM);
|
1983 |
c->trex_data = trex; |
1984 |
trex = &c->trex_data[c->trex_count++]; |
1985 |
get_byte(pb); /* version */
|
1986 |
get_be24(pb); /* flags */
|
1987 |
trex->track_id = get_be32(pb); |
1988 |
trex->stsd_id = get_be32(pb); |
1989 |
trex->duration = get_be32(pb); |
1990 |
trex->size = get_be32(pb); |
1991 |
trex->flags = get_be32(pb); |
1992 |
return 0; |
1993 |
} |
1994 |
|
1995 |
static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1996 |
{ |
1997 |
MOVFragment *frag = &c->fragment; |
1998 |
AVStream *st = NULL;
|
1999 |
MOVStreamContext *sc; |
2000 |
uint64_t offset; |
2001 |
int64_t dts; |
2002 |
int data_offset = 0; |
2003 |
unsigned entries, first_sample_flags = frag->flags;
|
2004 |
int flags, distance, i;
|
2005 |
|
2006 |
for (i = 0; i < c->fc->nb_streams; i++) { |
2007 |
if (c->fc->streams[i]->id == frag->track_id) {
|
2008 |
st = c->fc->streams[i]; |
2009 |
break;
|
2010 |
} |
2011 |
} |
2012 |
if (!st) {
|
2013 |
av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
|
2014 |
return -1; |
2015 |
} |
2016 |
sc = st->priv_data; |
2017 |
if (sc->pseudo_stream_id+1 != frag->stsd_id) |
2018 |
return 0; |
2019 |
get_byte(pb); /* version */
|
2020 |
flags = get_be24(pb); |
2021 |
entries = get_be32(pb); |
2022 |
dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
|
2023 |
if (flags & 0x001) data_offset = get_be32(pb); |
2024 |
if (flags & 0x004) first_sample_flags = get_be32(pb); |
2025 |
if (flags & 0x800) { |
2026 |
MOVStts *ctts_data; |
2027 |
if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data)) |
2028 |
return -1; |
2029 |
ctts_data = av_realloc(sc->ctts_data, |
2030 |
(entries+sc->ctts_count)*sizeof(*sc->ctts_data));
|
2031 |
if (!ctts_data)
|
2032 |
return AVERROR(ENOMEM);
|
2033 |
sc->ctts_data = ctts_data; |
2034 |
} |
2035 |
dts = st->duration; |
2036 |
offset = frag->base_data_offset + data_offset; |
2037 |
distance = 0;
|
2038 |
dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
|
2039 |
for (i = 0; i < entries; i++) { |
2040 |
unsigned sample_size = frag->size;
|
2041 |
int sample_flags = i ? frag->flags : first_sample_flags;
|
2042 |
unsigned sample_duration = frag->duration;
|
2043 |
int keyframe;
|
2044 |
|
2045 |
if (flags & 0x100) sample_duration = get_be32(pb); |
2046 |
if (flags & 0x200) sample_size = get_be32(pb); |
2047 |
if (flags & 0x400) sample_flags = get_be32(pb); |
2048 |
if (flags & 0x800) { |
2049 |
sc->ctts_data[sc->ctts_count].count = 1;
|
2050 |
sc->ctts_data[sc->ctts_count].duration = get_be32(pb); |
2051 |
sc->ctts_count++; |
2052 |
} |
2053 |
if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
|
2054 |
(flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000)) |
2055 |
distance = 0;
|
2056 |
av_add_index_entry(st, offset, dts, sample_size, distance, |
2057 |
keyframe ? AVINDEX_KEYFRAME : 0);
|
2058 |
dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
2059 |
"size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
|
2060 |
offset, dts, sample_size, distance, keyframe); |
2061 |
distance++; |
2062 |
dts += sample_duration; |
2063 |
offset += sample_size; |
2064 |
} |
2065 |
frag->moof_offset = offset; |
2066 |
st->duration = dts; |
2067 |
return 0; |
2068 |
} |
2069 |
|
2070 |
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
|
2071 |
/* like the files created with Adobe Premiere 5.0, for samples see */
|
2072 |
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
|
2073 |
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
2074 |
{ |
2075 |
int err;
|
2076 |
|
2077 |
if (atom.size < 8) |
2078 |
return 0; /* continue */ |
2079 |
if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */ |
2080 |
url_fskip(pb, atom.size - 4);
|
2081 |
return 0; |
2082 |
} |
2083 |
atom.type = get_le32(pb); |
2084 |
atom.size -= 8;
|
2085 |
if (atom.type != MKTAG('m','d','a','t')) { |
2086 |
url_fskip(pb, atom.size); |
2087 |
return 0; |
2088 |
} |
2089 |
err = mov_read_mdat(c, pb, atom); |
2090 |
return err;
|
2091 |
} |
2092 |
|
2093 |
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
2094 |
{ |
2095 |
#if CONFIG_ZLIB
|
2096 |
ByteIOContext ctx; |
2097 |
uint8_t *cmov_data; |
2098 |
uint8_t *moov_data; /* uncompressed data */
|
2099 |
long cmov_len, moov_len;
|
2100 |
int ret = -1; |
2101 |
|
2102 |
get_be32(pb); /* dcom atom */
|
2103 |
if (get_le32(pb) != MKTAG('d','c','o','m')) |
2104 |
return -1; |
2105 |
if (get_le32(pb) != MKTAG('z','l','i','b')) { |
2106 |
av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
|
2107 |
return -1; |
2108 |
} |
2109 |
get_be32(pb); /* cmvd atom */
|
2110 |
if (get_le32(pb) != MKTAG('c','m','v','d')) |
2111 |
return -1; |
2112 |
moov_len = get_be32(pb); /* uncompressed size */
|
2113 |
cmov_len = atom.size - 6 * 4; |
2114 |
|
2115 |
cmov_data = av_malloc(cmov_len); |
2116 |
if (!cmov_data)
|
2117 |
return AVERROR(ENOMEM);
|
2118 |
moov_data = av_malloc(moov_len); |
2119 |
if (!moov_data) {
|
2120 |
av_free(cmov_data); |
2121 |
return AVERROR(ENOMEM);
|
2122 |
} |
2123 |
get_buffer(pb, cmov_data, cmov_len); |
2124 |
if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK) |
2125 |
goto free_and_return;
|
2126 |
if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0) |
2127 |
goto free_and_return;
|
2128 |
atom.type = MKTAG('m','o','o','v'); |
2129 |
atom.size = moov_len; |
2130 |
#ifdef DEBUG
|
2131 |
// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
|
2132 |
#endif
|
2133 |
ret = mov_read_default(c, &ctx, atom); |
2134 |
free_and_return:
|
2135 |
av_free(moov_data); |
2136 |
av_free(cmov_data); |
2137 |
return ret;
|
2138 |
#else
|
2139 |
av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
|
2140 |
return -1; |
2141 |
#endif
|
2142 |
} |
2143 |
|
2144 |
/* edit list atom */
|
2145 |
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
2146 |
{ |
2147 |
MOVStreamContext *sc; |
2148 |
int i, edit_count;
|
2149 |
|
2150 |
if (c->fc->nb_streams < 1) |
2151 |
return 0; |
2152 |
sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
|
2153 |
|
2154 |
get_byte(pb); /* version */
|
2155 |
get_be24(pb); /* flags */
|
2156 |
edit_count = get_be32(pb); /* entries */
|
2157 |
|
2158 |
if((uint64_t)edit_count*12+8 > atom.size) |
2159 |
return -1; |
2160 |
|
2161 |
for(i=0; i<edit_count; i++){ |
2162 |
int time;
|
2163 |
int duration = get_be32(pb); /* Track duration */ |
2164 |
time = get_be32(pb); /* Media time */
|
2165 |
get_be32(pb); /* Media rate */
|
2166 |
if (i == 0 && time >= -1) { |
2167 |
sc->time_offset = time != -1 ? time : -duration;
|
2168 |
} |
2169 |
} |
2170 |
|
2171 |
if(edit_count > 1) |
2172 |
av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
|
2173 |
"a/v desync might occur, patch welcome\n");
|
2174 |
|
2175 |
dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count); |
2176 |
return 0; |
2177 |
} |
2178 |
|
2179 |
static const MOVParseTableEntry mov_default_parse_table[] = { |
2180 |
{ MKTAG('a','v','s','s'), mov_read_extradata }, |
2181 |
{ MKTAG('c','h','p','l'), mov_read_chpl }, |
2182 |
{ MKTAG('c','o','6','4'), mov_read_stco }, |
2183 |
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */ |
2184 |
{ MKTAG('d','i','n','f'), mov_read_default }, |
2185 |
{ MKTAG('d','r','e','f'), mov_read_dref }, |
2186 |
{ MKTAG('e','d','t','s'), mov_read_default }, |
2187 |
{ MKTAG('e','l','s','t'), mov_read_elst }, |
2188 |
{ MKTAG('e','n','d','a'), mov_read_enda }, |
2189 |
{ MKTAG('f','i','e','l'), mov_read_extradata }, |
2190 |
{ MKTAG('f','t','y','p'), mov_read_ftyp }, |
2191 |
{ MKTAG('g','l','b','l'), mov_read_glbl }, |
2192 |
{ MKTAG('h','d','l','r'), mov_read_hdlr }, |
2193 |
{ MKTAG('i','l','s','t'), mov_read_ilst }, |
2194 |
{ MKTAG('j','p','2','h'), mov_read_extradata }, |
2195 |
{ MKTAG('m','d','a','t'), mov_read_mdat }, |
2196 |
{ MKTAG('m','d','h','d'), mov_read_mdhd }, |
2197 |
{ MKTAG('m','d','i','a'), mov_read_default }, |
2198 |
{ MKTAG('m','e','t','a'), mov_read_meta }, |
2199 |
{ MKTAG('m','i','n','f'), mov_read_default }, |
2200 |
{ MKTAG('m','o','o','f'), mov_read_moof }, |
2201 |
{ MKTAG('m','o','o','v'), mov_read_moov }, |
2202 |
{ MKTAG('m','v','e','x'), mov_read_default }, |
2203 |
{ MKTAG('m','v','h','d'), mov_read_mvhd }, |
2204 |
{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */ |
2205 |
{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */ |
2206 |
{ MKTAG('a','v','c','C'), mov_read_glbl }, |
2207 |
{ MKTAG('p','a','s','p'), mov_read_pasp }, |
2208 |
{ MKTAG('s','t','b','l'), mov_read_default }, |
2209 |
{ MKTAG('s','t','c','o'), mov_read_stco }, |
2210 |
{ MKTAG('s','t','p','s'), mov_read_stps }, |
2211 |
{ MKTAG('s','t','r','f'), mov_read_strf }, |
2212 |
{ MKTAG('s','t','s','c'), mov_read_stsc }, |
2213 |
{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */ |
2214 |
{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */ |
2215 |
{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */ |
2216 |
{ MKTAG('s','t','t','s'), mov_read_stts }, |
2217 |
{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */ |
2218 |
{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */ |
2219 |
{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */ |
2220 |
{ MKTAG('t','r','a','k'), mov_read_trak }, |
2221 |
{ MKTAG('t','r','a','f'), mov_read_default }, |
2222 |
{ MKTAG('t','r','e','f'), mov_read_default }, |
2223 |
{ MKTAG('c','h','a','p'), mov_read_chap }, |
2224 |
{ MKTAG('t','r','e','x'), mov_read_trex }, |
2225 |
{ MKTAG('t','r','u','n'), mov_read_trun }, |
2226 |
{ MKTAG('u','d','t','a'), mov_read_default }, |
2227 |
{ MKTAG('w','a','v','e'), mov_read_wave }, |
2228 |
{ MKTAG('e','s','d','s'), mov_read_esds }, |
2229 |
{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */ |
2230 |
{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */ |
2231 |
{ MKTAG('c','m','o','v'), mov_read_cmov }, |
2232 |
{ 0, NULL } |
2233 |
}; |
2234 |
|
2235 |
static int mov_probe(AVProbeData *p) |
2236 |
{ |
2237 |
unsigned int offset; |
2238 |
uint32_t tag; |
2239 |
int score = 0; |
2240 |
|
2241 |
/* check file header */
|
2242 |
offset = 0;
|
2243 |
for(;;) {
|
2244 |
/* ignore invalid offset */
|
2245 |
if ((offset + 8) > (unsigned int)p->buf_size) |
2246 |
return score;
|
2247 |
tag = AV_RL32(p->buf + offset + 4);
|
2248 |
switch(tag) {
|
2249 |
/* check for obvious tags */
|
2250 |
case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */ |
2251 |
case MKTAG('m','o','o','v'): |
2252 |
case MKTAG('m','d','a','t'): |
2253 |
case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */ |
2254 |
case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */ |
2255 |
case MKTAG('f','t','y','p'): |
2256 |
return AVPROBE_SCORE_MAX;
|
2257 |
/* those are more common words, so rate then a bit less */
|
2258 |
case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */ |
2259 |
case MKTAG('w','i','d','e'): |
2260 |
case MKTAG('f','r','e','e'): |
2261 |
case MKTAG('j','u','n','k'): |
2262 |
case MKTAG('p','i','c','t'): |
2263 |
return AVPROBE_SCORE_MAX - 5; |
2264 |
case MKTAG(0x82,0x82,0x7f,0x7d): |
2265 |
case MKTAG('s','k','i','p'): |
2266 |
case MKTAG('u','u','i','d'): |
2267 |
case MKTAG('p','r','f','l'): |
2268 |
offset = AV_RB32(p->buf+offset) + offset; |
2269 |
/* if we only find those cause probedata is too small at least rate them */
|
2270 |
score = AVPROBE_SCORE_MAX - 50;
|
2271 |
break;
|
2272 |
default:
|
2273 |
/* unrecognized tag */
|
2274 |
return score;
|
2275 |
} |
2276 |
} |
2277 |
return score;
|
2278 |
} |
2279 |
|
2280 |
// must be done after parsing all trak because there's no order requirement
|
2281 |
static void mov_read_chapters(AVFormatContext *s) |
2282 |
{ |
2283 |
MOVContext *mov = s->priv_data; |
2284 |
AVStream *st = NULL;
|
2285 |
MOVStreamContext *sc; |
2286 |
int64_t cur_pos; |
2287 |
int i;
|
2288 |
|
2289 |
for (i = 0; i < s->nb_streams; i++) |
2290 |
if (s->streams[i]->id == mov->chapter_track) {
|
2291 |
st = s->streams[i]; |
2292 |
break;
|
2293 |
} |
2294 |
if (!st) {
|
2295 |
av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
|
2296 |
return;
|
2297 |
} |
2298 |
|
2299 |
st->discard = AVDISCARD_ALL; |
2300 |
sc = st->priv_data; |
2301 |
cur_pos = url_ftell(sc->pb); |
2302 |
|
2303 |
for (i = 0; i < st->nb_index_entries; i++) { |
2304 |
AVIndexEntry *sample = &st->index_entries[i]; |
2305 |
int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration; |
2306 |
uint8_t title[512];
|
2307 |
uint16_t ch; |
2308 |
int len;
|
2309 |
|
2310 |
if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
|
2311 |
av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
|
2312 |
goto finish;
|
2313 |
} |
2314 |
|
2315 |
// the first two bytes are the length of the title
|
2316 |
len = get_be16(sc->pb); |
2317 |
if (len > sample->size-2) |
2318 |
continue;
|
2319 |
|
2320 |
// The samples could theoretically be in any encoding if there's an encd
|
2321 |
// atom following, but in practice are only utf-8 or utf-16, distinguished
|
2322 |
// instead by the presence of a BOM
|
2323 |
if ((ch = get_be16(sc->pb)) == 0xfeff) |
2324 |
avio_get_str16be(sc->pb, len, title, sizeof(title));
|
2325 |
else {
|
2326 |
AV_WB16(title, ch); |
2327 |
get_buffer(sc->pb, title + sizeof(ch), sizeof(title) - sizeof(ch)); |
2328 |
} |
2329 |
|
2330 |
ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title); |
2331 |
} |
2332 |
finish:
|
2333 |
url_fseek(sc->pb, cur_pos, SEEK_SET); |
2334 |
} |
2335 |
|
2336 |
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap) |
2337 |
{ |
2338 |
MOVContext *mov = s->priv_data; |
2339 |
ByteIOContext *pb = s->pb; |
2340 |
int err;
|
2341 |
MOVAtom atom = { AV_RL32("root") };
|
2342 |
|
2343 |
mov->fc = s; |
2344 |
/* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
|
2345 |
if(!url_is_streamed(pb))
|
2346 |
atom.size = url_fsize(pb); |
2347 |
else
|
2348 |
atom.size = INT64_MAX; |
2349 |
|
2350 |
/* check MOV header */
|
2351 |
if ((err = mov_read_default(mov, pb, atom)) < 0) { |
2352 |
av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
|
2353 |
return err;
|
2354 |
} |
2355 |
if (!mov->found_moov) {
|
2356 |
av_log(s, AV_LOG_ERROR, "moov atom not found\n");
|
2357 |
return -1; |
2358 |
} |
2359 |
dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
|
2360 |
|
2361 |
if (!url_is_streamed(pb) && mov->chapter_track > 0) |
2362 |
mov_read_chapters(s); |
2363 |
|
2364 |
return 0; |
2365 |
} |
2366 |
|
2367 |
static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
|
2368 |
{ |
2369 |
AVIndexEntry *sample = NULL;
|
2370 |
int64_t best_dts = INT64_MAX; |
2371 |
int i;
|
2372 |
for (i = 0; i < s->nb_streams; i++) { |
2373 |
AVStream *avst = s->streams[i]; |
2374 |
MOVStreamContext *msc = avst->priv_data; |
2375 |
if (msc->pb && msc->current_sample < avst->nb_index_entries) {
|
2376 |
AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample]; |
2377 |
int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale); |
2378 |
dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts); |
2379 |
if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
|
2380 |
(!url_is_streamed(s->pb) && |
2381 |
((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb && |
2382 |
((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) || |
2383 |
(FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) { |
2384 |
sample = current_sample; |
2385 |
best_dts = dts; |
2386 |
*st = avst; |
2387 |
} |
2388 |
} |
2389 |
} |
2390 |
return sample;
|
2391 |
} |
2392 |
|
2393 |
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) |
2394 |
{ |
2395 |
MOVContext *mov = s->priv_data; |
2396 |
MOVStreamContext *sc; |
2397 |
AVIndexEntry *sample; |
2398 |
AVStream *st = NULL;
|
2399 |
int ret;
|
2400 |
retry:
|
2401 |
sample = mov_find_next_sample(s, &st); |
2402 |
if (!sample) {
|
2403 |
mov->found_mdat = 0;
|
2404 |
if (!url_is_streamed(s->pb) ||
|
2405 |
mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 || |
2406 |
url_feof(s->pb)) |
2407 |
return AVERROR_EOF;
|
2408 |
dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
|
2409 |
goto retry;
|
2410 |
} |
2411 |
sc = st->priv_data; |
2412 |
/* must be done just before reading, to avoid infinite loop on sample */
|
2413 |
sc->current_sample++; |
2414 |
|
2415 |
if (st->discard != AVDISCARD_ALL) {
|
2416 |
if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
|
2417 |
av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", |
2418 |
sc->ffindex, sample->pos); |
2419 |
return -1; |
2420 |
} |
2421 |
ret = av_get_packet(sc->pb, pkt, sample->size); |
2422 |
if (ret < 0) |
2423 |
return ret;
|
2424 |
#if CONFIG_DV_DEMUXER
|
2425 |
if (mov->dv_demux && sc->dv_audio_container) {
|
2426 |
dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size); |
2427 |
av_free(pkt->data); |
2428 |
pkt->size = 0;
|
2429 |
ret = dv_get_packet(mov->dv_demux, pkt); |
2430 |
if (ret < 0) |
2431 |
return ret;
|
2432 |
} |
2433 |
#endif
|
2434 |
} |
2435 |
|
2436 |
pkt->stream_index = sc->ffindex; |
2437 |
pkt->dts = sample->timestamp; |
2438 |
if (sc->ctts_data) {
|
2439 |
pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration; |
2440 |
/* update ctts context */
|
2441 |
sc->ctts_sample++; |
2442 |
if (sc->ctts_index < sc->ctts_count &&
|
2443 |
sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) { |
2444 |
sc->ctts_index++; |
2445 |
sc->ctts_sample = 0;
|
2446 |
} |
2447 |
if (sc->wrong_dts)
|
2448 |
pkt->dts = AV_NOPTS_VALUE; |
2449 |
} else {
|
2450 |
int64_t next_dts = (sc->current_sample < st->nb_index_entries) ? |
2451 |
st->index_entries[sc->current_sample].timestamp : st->duration; |
2452 |
pkt->duration = next_dts - pkt->dts; |
2453 |
pkt->pts = pkt->dts; |
2454 |
} |
2455 |
if (st->discard == AVDISCARD_ALL)
|
2456 |
goto retry;
|
2457 |
pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
|
2458 |
pkt->pos = sample->pos; |
2459 |
dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", |
2460 |
pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration); |
2461 |
return 0; |
2462 |
} |
2463 |
|
2464 |
static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags) |
2465 |
{ |
2466 |
MOVStreamContext *sc = st->priv_data; |
2467 |
int sample, time_sample;
|
2468 |
int i;
|
2469 |
|
2470 |
sample = av_index_search_timestamp(st, timestamp, flags); |
2471 |
dprintf(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample); |
2472 |
if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp) |
2473 |
sample = 0;
|
2474 |
if (sample < 0) /* not sure what to do */ |
2475 |
return -1; |
2476 |
sc->current_sample = sample; |
2477 |
dprintf(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
|
2478 |
/* adjust ctts index */
|
2479 |
if (sc->ctts_data) {
|
2480 |
time_sample = 0;
|
2481 |
for (i = 0; i < sc->ctts_count; i++) { |
2482 |
int next = time_sample + sc->ctts_data[i].count;
|
2483 |
if (next > sc->current_sample) {
|
2484 |
sc->ctts_index = i; |
2485 |
sc->ctts_sample = sc->current_sample - time_sample; |
2486 |
break;
|
2487 |
} |
2488 |
time_sample = next; |
2489 |
} |
2490 |
} |
2491 |
return sample;
|
2492 |
} |
2493 |
|
2494 |
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) |
2495 |
{ |
2496 |
AVStream *st; |
2497 |
int64_t seek_timestamp, timestamp; |
2498 |
int sample;
|
2499 |
int i;
|
2500 |
|
2501 |
if (stream_index >= s->nb_streams)
|
2502 |
return -1; |
2503 |
if (sample_time < 0) |
2504 |
sample_time = 0;
|
2505 |
|
2506 |
st = s->streams[stream_index]; |
2507 |
sample = mov_seek_stream(s, st, sample_time, flags); |
2508 |
if (sample < 0) |
2509 |
return -1; |
2510 |
|
2511 |
/* adjust seek timestamp to found sample timestamp */
|
2512 |
seek_timestamp = st->index_entries[sample].timestamp; |
2513 |
|
2514 |
for (i = 0; i < s->nb_streams; i++) { |
2515 |
st = s->streams[i]; |
2516 |
if (stream_index == i)
|
2517 |
continue;
|
2518 |
|
2519 |
timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base); |
2520 |
mov_seek_stream(s, st, timestamp, flags); |
2521 |
} |
2522 |
return 0; |
2523 |
} |
2524 |
|
2525 |
static int mov_read_close(AVFormatContext *s) |
2526 |
{ |
2527 |
MOVContext *mov = s->priv_data; |
2528 |
int i, j;
|
2529 |
|
2530 |
for (i = 0; i < s->nb_streams; i++) { |
2531 |
AVStream *st = s->streams[i]; |
2532 |
MOVStreamContext *sc = st->priv_data; |
2533 |
|
2534 |
av_freep(&sc->ctts_data); |
2535 |
for (j = 0; j < sc->drefs_count; j++) { |
2536 |
av_freep(&sc->drefs[j].path); |
2537 |
av_freep(&sc->drefs[j].dir); |
2538 |
} |
2539 |
av_freep(&sc->drefs); |
2540 |
if (sc->pb && sc->pb != s->pb)
|
2541 |
url_fclose(sc->pb); |
2542 |
|
2543 |
av_freep(&st->codec->palctrl); |
2544 |
} |
2545 |
|
2546 |
if (mov->dv_demux) {
|
2547 |
for(i = 0; i < mov->dv_fctx->nb_streams; i++) { |
2548 |
av_freep(&mov->dv_fctx->streams[i]->codec); |
2549 |
av_freep(&mov->dv_fctx->streams[i]); |
2550 |
} |
2551 |
av_freep(&mov->dv_fctx); |
2552 |
av_freep(&mov->dv_demux); |
2553 |
} |
2554 |
|
2555 |
av_freep(&mov->trex_data); |
2556 |
|
2557 |
return 0; |
2558 |
} |
2559 |
|
2560 |
AVInputFormat mov_demuxer = { |
2561 |
"mov,mp4,m4a,3gp,3g2,mj2",
|
2562 |
NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
|
2563 |
sizeof(MOVContext),
|
2564 |
mov_probe, |
2565 |
mov_read_header, |
2566 |
mov_read_packet, |
2567 |
mov_read_close, |
2568 |
mov_read_seek, |
2569 |
}; |