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authorTim Redfern <tim@eclectronics.org>2013-09-05 17:57:22 +0100
committerTim Redfern <tim@eclectronics.org>2013-09-05 17:57:22 +0100
commit8992cb1d0d07edc33d274f6d7924ecdf6f83d994 (patch)
tree3a2c86846b7eec8137c1507e623fc7018f13d453 /ffmpeg/libavformat/mov.c
parent741fb4b9e135cfb161a749db88713229038577bb (diff)
making act segmenter
Diffstat (limited to 'ffmpeg/libavformat/mov.c')
-rw-r--r--ffmpeg/libavformat/mov.c3408
1 files changed, 3408 insertions, 0 deletions
diff --git a/ffmpeg/libavformat/mov.c b/ffmpeg/libavformat/mov.c
new file mode 100644
index 0000000..577c0e9
--- /dev/null
+++ b/ffmpeg/libavformat/mov.c
@@ -0,0 +1,3408 @@
+/*
+ * MOV demuxer
+ * Copyright (c) 2001 Fabrice Bellard
+ * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <limits.h>
+
+//#define DEBUG
+//#define MOV_EXPORT_ALL_METADATA
+
+#include "libavutil/attributes.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/intfloat.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/avstring.h"
+#include "libavutil/dict.h"
+#include "libavutil/opt.h"
+#include "libavutil/timecode.h"
+#include "libavcodec/ac3tab.h"
+#include "avformat.h"
+#include "internal.h"
+#include "avio_internal.h"
+#include "riff.h"
+#include "isom.h"
+#include "libavcodec/get_bits.h"
+#include "id3v1.h"
+#include "mov_chan.h"
+
+#if CONFIG_ZLIB
+#include <zlib.h>
+#endif
+
+/*
+ * First version by Francois Revol revol@free.fr
+ * Seek function by Gael Chardon gael.dev@4now.net
+ */
+
+#include "qtpalette.h"
+
+
+#undef NDEBUG
+#include <assert.h>
+
+/* those functions parse an atom */
+/* links atom IDs to parse functions */
+typedef struct MOVParseTableEntry {
+ uint32_t type;
+ int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
+} MOVParseTableEntry;
+
+static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
+
+static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
+ unsigned len, const char *key)
+{
+ char buf[16];
+
+ short current, total = 0;
+ avio_rb16(pb); // unknown
+ current = avio_rb16(pb);
+ if (len >= 6)
+ total = avio_rb16(pb);
+ if (!total)
+ snprintf(buf, sizeof(buf), "%d", current);
+ else
+ snprintf(buf, sizeof(buf), "%d/%d", current, total);
+ av_dict_set(&c->fc->metadata, key, buf, 0);
+
+ return 0;
+}
+
+static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
+ unsigned len, const char *key)
+{
+ char buf[16];
+
+ /* bypass padding bytes */
+ avio_r8(pb);
+ avio_r8(pb);
+ avio_r8(pb);
+
+ snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
+ av_dict_set(&c->fc->metadata, key, buf, 0);
+
+ return 0;
+}
+
+static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
+ unsigned len, const char *key)
+{
+ char buf[16];
+
+ snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
+ av_dict_set(&c->fc->metadata, key, buf, 0);
+
+ return 0;
+}
+
+static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
+ unsigned len, const char *key)
+{
+ short genre;
+ char buf[20];
+
+ avio_r8(pb); // unknown
+
+ genre = avio_r8(pb);
+ if (genre < 1 || genre > ID3v1_GENRE_MAX)
+ return 0;
+ snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
+ av_dict_set(&c->fc->metadata, key, buf, 0);
+
+ return 0;
+}
+
+static int mov_read_custom_metadata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ char key[1024]={0}, data[1024]={0};
+ int i;
+ AVStream *st;
+ MOVStreamContext *sc;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ if (atom.size <= 8) return 0;
+
+ for (i = 0; i < 3; i++) { // Parse up to three sub-atoms looking for name and data.
+ int data_size = avio_rb32(pb);
+ int tag = avio_rl32(pb);
+ int str_size = 0, skip_size = 0;
+ char *target = NULL;
+
+ switch (tag) {
+ case MKTAG('n','a','m','e'):
+ avio_rb32(pb); // version/flags
+ str_size = skip_size = data_size - 12;
+ atom.size -= 12;
+ target = key;
+ break;
+ case MKTAG('d','a','t','a'):
+ avio_rb32(pb); // version/flags
+ avio_rb32(pb); // reserved (zero)
+ str_size = skip_size = data_size - 16;
+ atom.size -= 16;
+ target = data;
+ break;
+ default:
+ skip_size = data_size - 8;
+ str_size = 0;
+ break;
+ }
+
+ if (target) {
+ str_size = FFMIN3(sizeof(data)-1, str_size, atom.size);
+ avio_read(pb, target, str_size);
+ target[str_size] = 0;
+ }
+ atom.size -= skip_size;
+
+ // If we didn't read the full data chunk for the sub-atom, skip to the end of it.
+ if (skip_size > str_size) avio_skip(pb, skip_size - str_size);
+ }
+
+ if (*key && *data) {
+ if (strcmp(key, "iTunSMPB") == 0) {
+ int priming, remainder, samples;
+ if(sscanf(data, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
+ if(priming>0 && priming<16384)
+ sc->start_pad = priming;
+ return 1;
+ }
+ }
+ if (strcmp(key, "cdec") == 0) {
+// av_dict_set(&st->metadata, key, data, 0);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static const uint32_t mac_to_unicode[128] = {
+ 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
+ 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
+ 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
+ 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
+ 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
+ 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
+ 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
+ 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
+ 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
+ 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
+ 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
+ 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
+ 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
+ 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
+ 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
+ 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
+};
+
+static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
+ char *dst, int dstlen)
+{
+ char *p = dst;
+ char *end = dst+dstlen-1;
+ int i;
+
+ for (i = 0; i < len; i++) {
+ uint8_t t, c = avio_r8(pb);
+ if (c < 0x80 && p < end)
+ *p++ = c;
+ else if (p < end)
+ PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
+ }
+ *p = 0;
+ return p - dst;
+}
+
+static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
+{
+ AVPacket pkt;
+ AVStream *st;
+ MOVStreamContext *sc;
+ enum AVCodecID id;
+ int ret;
+
+ switch (type) {
+ case 0xd: id = AV_CODEC_ID_MJPEG; break;
+ case 0xe: id = AV_CODEC_ID_PNG; break;
+ case 0x1b: id = AV_CODEC_ID_BMP; break;
+ default:
+ av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
+ avio_skip(pb, len);
+ return 0;
+ }
+
+ st = avformat_new_stream(c->fc, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ sc = av_mallocz(sizeof(*sc));
+ if (!sc)
+ return AVERROR(ENOMEM);
+ st->priv_data = sc;
+
+ ret = av_get_packet(pb, &pkt, len);
+ if (ret < 0)
+ return ret;
+
+ st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
+
+ st->attached_pic = pkt;
+ st->attached_pic.stream_index = st->index;
+ st->attached_pic.flags |= AV_PKT_FLAG_KEY;
+
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = id;
+
+ return 0;
+}
+
+static int mov_metadata_raw(MOVContext *c, AVIOContext *pb,
+ unsigned len, const char *key)
+{
+ char *value = av_malloc(len + 1);
+ if (!value)
+ return AVERROR(ENOMEM);
+ avio_read(pb, value, len);
+ value[len] = 0;
+ return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
+}
+
+static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+#ifdef MOV_EXPORT_ALL_METADATA
+ char tmp_key[5];
+#endif
+ char str[1024], key2[16], language[4] = {0};
+ const char *key = NULL;
+ uint16_t langcode = 0;
+ uint32_t data_type = 0, str_size;
+ int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
+
+ if (c->itunes_metadata && atom.type == MKTAG('-','-','-','-'))
+ return mov_read_custom_metadata(c, pb, atom);
+
+ switch (atom.type) {
+ case MKTAG(0xa9,'n','a','m'): key = "title"; break;
+ case MKTAG(0xa9,'a','u','t'):
+ case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
+ case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
+ case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
+ case MKTAG( 'c','p','r','t'):
+ case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
+ case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
+ case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
+ case MKTAG(0xa9,'c','m','t'):
+ case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
+ case MKTAG(0xa9,'a','l','b'): key = "album"; break;
+ case MKTAG(0xa9,'d','a','y'): key = "date"; break;
+ case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
+ case MKTAG( 'g','n','r','e'): key = "genre";
+ parse = mov_metadata_gnre; break;
+ case MKTAG(0xa9,'t','o','o'):
+ case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
+ case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
+ case MKTAG(0xa9,'m','a','k'): key = "make"; break;
+ case MKTAG(0xa9,'m','o','d'): key = "model"; break;
+ case MKTAG(0xa9,'x','y','z'): key = "location"; break;
+ case MKTAG( 'd','e','s','c'): key = "description";break;
+ case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
+ case MKTAG( 't','v','s','h'): key = "show"; break;
+ case MKTAG( 't','v','e','n'): key = "episode_id";break;
+ case MKTAG( 't','v','n','n'): key = "network"; break;
+ case MKTAG( 't','r','k','n'): key = "track";
+ parse = mov_metadata_track_or_disc_number; break;
+ case MKTAG( 'd','i','s','k'): key = "disc";
+ parse = mov_metadata_track_or_disc_number; break;
+ case MKTAG( 't','v','e','s'): key = "episode_sort";
+ parse = mov_metadata_int8_bypass_padding; break;
+ case MKTAG( 't','v','s','n'): key = "season_number";
+ parse = mov_metadata_int8_bypass_padding; break;
+ case MKTAG( 's','t','i','k'): key = "media_type";
+ parse = mov_metadata_int8_no_padding; break;
+ case MKTAG( 'h','d','v','d'): key = "hd_video";
+ parse = mov_metadata_int8_no_padding; break;
+ case MKTAG( 'p','g','a','p'): key = "gapless_playback";
+ parse = mov_metadata_int8_no_padding; break;
+ case MKTAG( '@','P','R','M'):
+ return mov_metadata_raw(c, pb, atom.size, "premiere_version");
+ case MKTAG( '@','P','R','Q'):
+ return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
+ }
+
+ if (c->itunes_metadata && atom.size > 8) {
+ int data_size = avio_rb32(pb);
+ int tag = avio_rl32(pb);
+ if (tag == MKTAG('d','a','t','a')) {
+ data_type = avio_rb32(pb); // type
+ avio_rb32(pb); // unknown
+ str_size = data_size - 16;
+ atom.size -= 16;
+
+ if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
+ int ret = mov_read_covr(c, pb, data_type, str_size);
+ if (ret < 0) {
+ av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
+ return ret;
+ }
+ }
+ } else return 0;
+ } else if (atom.size > 4 && key && !c->itunes_metadata) {
+ str_size = avio_rb16(pb); // string length
+ langcode = avio_rb16(pb);
+ ff_mov_lang_to_iso639(langcode, language);
+ atom.size -= 4;
+ } else
+ str_size = atom.size;
+
+#ifdef MOV_EXPORT_ALL_METADATA
+ if (!key) {
+ snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
+ key = tmp_key;
+ }
+#endif
+
+ if (!key)
+ return 0;
+ if (atom.size < 0)
+ return AVERROR_INVALIDDATA;
+
+ str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
+
+ if (parse)
+ parse(c, pb, str_size, key);
+ else {
+ if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
+ mov_read_mac_string(c, pb, str_size, str, sizeof(str));
+ } else {
+ avio_read(pb, str, str_size);
+ str[str_size] = 0;
+ }
+ av_dict_set(&c->fc->metadata, key, str, 0);
+ if (*language && strcmp(language, "und")) {
+ snprintf(key2, sizeof(key2), "%s-%s", key, language);
+ av_dict_set(&c->fc->metadata, key2, str, 0);
+ }
+ }
+ av_dlog(c->fc, "lang \"%3s\" ", language);
+ av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
+ key, str, (char*)&atom.type, str_size, atom.size);
+
+ return 0;
+}
+
+static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int64_t start;
+ int i, nb_chapters, str_len, version;
+ char str[256+1];
+
+ if ((atom.size -= 5) < 0)
+ return 0;
+
+ version = avio_r8(pb);
+ avio_rb24(pb);
+ if (version)
+ avio_rb32(pb); // ???
+ nb_chapters = avio_r8(pb);
+
+ for (i = 0; i < nb_chapters; i++) {
+ if (atom.size < 9)
+ return 0;
+
+ start = avio_rb64(pb);
+ str_len = avio_r8(pb);
+
+ if ((atom.size -= 9+str_len) < 0)
+ return 0;
+
+ avio_read(pb, str, str_len);
+ str[str_len] = 0;
+ avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
+ }
+ return 0;
+}
+
+#define MIN_DATA_ENTRY_BOX_SIZE 12
+static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ int entries, i, j;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_rb32(pb); // version + flags
+ entries = avio_rb32(pb);
+ if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
+ entries >= UINT_MAX / sizeof(*sc->drefs))
+ return AVERROR_INVALIDDATA;
+ av_free(sc->drefs);
+ sc->drefs_count = 0;
+ sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
+ if (!sc->drefs)
+ return AVERROR(ENOMEM);
+ sc->drefs_count = entries;
+
+ for (i = 0; i < sc->drefs_count; i++) {
+ MOVDref *dref = &sc->drefs[i];
+ uint32_t size = avio_rb32(pb);
+ int64_t next = avio_tell(pb) + size - 4;
+
+ if (size < 12)
+ return AVERROR_INVALIDDATA;
+
+ dref->type = avio_rl32(pb);
+ avio_rb32(pb); // version + flags
+ av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
+
+ if (dref->type == MKTAG('a','l','i','s') && size > 150) {
+ /* macintosh alias record */
+ uint16_t volume_len, len;
+ int16_t type;
+
+ avio_skip(pb, 10);
+
+ volume_len = avio_r8(pb);
+ volume_len = FFMIN(volume_len, 27);
+ avio_read(pb, dref->volume, 27);
+ dref->volume[volume_len] = 0;
+ av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
+
+ avio_skip(pb, 12);
+
+ len = avio_r8(pb);
+ len = FFMIN(len, 63);
+ avio_read(pb, dref->filename, 63);
+ dref->filename[len] = 0;
+ av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
+
+ avio_skip(pb, 16);
+
+ /* read next level up_from_alias/down_to_target */
+ dref->nlvl_from = avio_rb16(pb);
+ dref->nlvl_to = avio_rb16(pb);
+ av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
+ dref->nlvl_from, dref->nlvl_to);
+
+ avio_skip(pb, 16);
+
+ for (type = 0; type != -1 && avio_tell(pb) < next; ) {
+ if(url_feof(pb))
+ return AVERROR_EOF;
+ type = avio_rb16(pb);
+ len = avio_rb16(pb);
+ av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
+ if (len&1)
+ len += 1;
+ if (type == 2) { // absolute path
+ av_free(dref->path);
+ dref->path = av_mallocz(len+1);
+ if (!dref->path)
+ return AVERROR(ENOMEM);
+ avio_read(pb, dref->path, len);
+ if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
+ len -= volume_len;
+ memmove(dref->path, dref->path+volume_len, len);
+ dref->path[len] = 0;
+ }
+ for (j = 0; j < len; j++)
+ if (dref->path[j] == ':')
+ dref->path[j] = '/';
+ av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
+ } else if (type == 0) { // directory name
+ av_free(dref->dir);
+ dref->dir = av_malloc(len+1);
+ if (!dref->dir)
+ return AVERROR(ENOMEM);
+ avio_read(pb, dref->dir, len);
+ dref->dir[len] = 0;
+ for (j = 0; j < len; j++)
+ if (dref->dir[j] == ':')
+ dref->dir[j] = '/';
+ av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
+ } else
+ avio_skip(pb, len);
+ }
+ }
+ avio_seek(pb, next, SEEK_SET);
+ }
+ return 0;
+}
+
+static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ uint32_t type;
+ uint32_t av_unused ctype;
+ int title_size;
+ char *title_str;
+
+ if (c->fc->nb_streams < 1) // meta before first trak
+ return 0;
+
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+
+ /* component type */
+ ctype = avio_rl32(pb);
+ type = avio_rl32(pb); /* component subtype */
+
+ av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
+ av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
+
+ if (type == MKTAG('v','i','d','e'))
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ else if (type == MKTAG('s','o','u','n'))
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ else if (type == MKTAG('m','1','a',' '))
+ st->codec->codec_id = AV_CODEC_ID_MP2;
+ else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
+ st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+
+ avio_rb32(pb); /* component manufacture */
+ avio_rb32(pb); /* component flags */
+ avio_rb32(pb); /* component flags mask */
+
+ title_size = atom.size - 24;
+ if (title_size > 0) {
+ title_str = av_malloc(title_size + 1); /* Add null terminator */
+ if (!title_str)
+ return AVERROR(ENOMEM);
+ avio_read(pb, title_str, title_size);
+ title_str[title_size] = 0;
+ if (title_str[0])
+ av_dict_set(&st->metadata, "handler_name", title_str +
+ (!c->isom && title_str[0] == title_size - 1), 0);
+ av_freep(&title_str);
+ }
+
+ return 0;
+}
+
+int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ int tag;
+
+ if (fc->nb_streams < 1)
+ return 0;
+ st = fc->streams[fc->nb_streams-1];
+
+ avio_rb32(pb); /* version + flags */
+ ff_mp4_read_descr(fc, pb, &tag);
+ if (tag == MP4ESDescrTag) {
+ ff_mp4_parse_es_descr(pb, NULL);
+ } else
+ avio_rb16(pb); /* ID */
+
+ ff_mp4_read_descr(fc, pb, &tag);
+ if (tag == MP4DecConfigDescrTag)
+ ff_mp4_read_dec_config_descr(fc, st, pb);
+ return 0;
+}
+
+static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return ff_mov_read_esds(c->fc, pb, atom);
+}
+
+static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ int ac3info, acmod, lfeon, bsmod;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ ac3info = avio_rb24(pb);
+ bsmod = (ac3info >> 14) & 0x7;
+ acmod = (ac3info >> 11) & 0x7;
+ lfeon = (ac3info >> 10) & 0x1;
+ st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
+ st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
+ if (lfeon)
+ st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
+ st->codec->audio_service_type = bsmod;
+ if (st->codec->channels > 1 && bsmod == 0x7)
+ st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+
+ return 0;
+}
+
+static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ int eac3info, acmod, lfeon, bsmod;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ /* No need to parse fields for additional independent substreams and its
+ * associated dependent substreams since libavcodec's E-AC-3 decoder
+ * does not support them yet. */
+ avio_rb16(pb); /* data_rate and num_ind_sub */
+ eac3info = avio_rb24(pb);
+ bsmod = (eac3info >> 12) & 0x1f;
+ acmod = (eac3info >> 9) & 0x7;
+ lfeon = (eac3info >> 8) & 0x1;
+ st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
+ if (lfeon)
+ st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
+ st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
+ st->codec->audio_service_type = bsmod;
+ if (st->codec->channels > 1 && bsmod == 0x7)
+ st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+
+ return 0;
+}
+
+static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if (atom.size < 16)
+ return 0;
+
+ /* skip version and flags */
+ avio_skip(pb, 4);
+
+ ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
+
+ return 0;
+}
+
+static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if (ff_get_wav_header(pb, st->codec, atom.size) < 0) {
+ av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
+ }
+
+ return 0;
+}
+
+static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ const int num = avio_rb32(pb);
+ const int den = avio_rb32(pb);
+ AVStream *st;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
+ (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
+ av_log(c->fc, AV_LOG_WARNING,
+ "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
+ st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
+ num, den);
+ } else if (den != 0) {
+ st->sample_aspect_ratio.num = num;
+ st->sample_aspect_ratio.den = den;
+ }
+ return 0;
+}
+
+/* this atom contains actual media data */
+static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ if (atom.size == 0) /* wrong one (MP4) */
+ return 0;
+ c->found_mdat=1;
+ return 0; /* now go for moov */
+}
+
+/* read major brand, minor version and compatible brands and store them as metadata */
+static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ uint32_t minor_ver;
+ int comp_brand_size;
+ char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
+ char* comp_brands_str;
+ uint8_t type[5] = {0};
+
+ avio_read(pb, type, 4);
+ if (strcmp(type, "qt "))
+ c->isom = 1;
+ av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
+ av_dict_set(&c->fc->metadata, "major_brand", type, 0);
+ minor_ver = avio_rb32(pb); /* minor version */
+ snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
+ av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
+
+ comp_brand_size = atom.size - 8;
+ if (comp_brand_size < 0)
+ return AVERROR_INVALIDDATA;
+ comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
+ if (!comp_brands_str)
+ return AVERROR(ENOMEM);
+ avio_read(pb, comp_brands_str, comp_brand_size);
+ comp_brands_str[comp_brand_size] = 0;
+ av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
+ av_freep(&comp_brands_str);
+
+ return 0;
+}
+
+/* this atom should contain all header atoms */
+static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int ret;
+
+ if ((ret = mov_read_default(c, pb, atom)) < 0)
+ return ret;
+ /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
+ /* so we don't parse the whole file if over a network */
+ c->found_moov=1;
+ return 0; /* now go for mdat */
+}
+
+static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ c->fragment.moof_offset = avio_tell(pb) - 8;
+ av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
+ return mov_read_default(c, pb, atom);
+}
+
+static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
+{
+ char buffer[32];
+ if (time) {
+ struct tm *ptm;
+ time_t timet;
+ if(time >= 2082844800)
+ time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
+ timet = time;
+ ptm = gmtime(&timet);
+ if (!ptm) return;
+ strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
+ av_dict_set(metadata, "creation_time", buffer, 0);
+ }
+}
+
+static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ int version;
+ char language[4] = {0};
+ unsigned lang;
+ int64_t creation_time;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ version = avio_r8(pb);
+ if (version > 1) {
+ avpriv_request_sample(c->fc, "Version %d", version);
+ return AVERROR_PATCHWELCOME;
+ }
+ avio_rb24(pb); /* flags */
+ if (version == 1) {
+ creation_time = avio_rb64(pb);
+ avio_rb64(pb);
+ } else {
+ creation_time = avio_rb32(pb);
+ avio_rb32(pb); /* modification time */
+ }
+ mov_metadata_creation_time(&st->metadata, creation_time);
+
+ sc->time_scale = avio_rb32(pb);
+ st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
+
+ lang = avio_rb16(pb); /* language */
+ if (ff_mov_lang_to_iso639(lang, language))
+ av_dict_set(&st->metadata, "language", language, 0);
+ avio_rb16(pb); /* quality */
+
+ return 0;
+}
+
+static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int64_t creation_time;
+ int version = avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+
+ if (version == 1) {
+ creation_time = avio_rb64(pb);
+ avio_rb64(pb);
+ } else {
+ creation_time = avio_rb32(pb);
+ avio_rb32(pb); /* modification time */
+ }
+ mov_metadata_creation_time(&c->fc->metadata, creation_time);
+ c->time_scale = avio_rb32(pb); /* time scale */
+
+ av_dlog(c->fc, "time scale = %i\n", c->time_scale);
+
+ c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
+ // set the AVCodecContext duration because the duration of individual tracks
+ // may be inaccurate
+ if (c->time_scale > 0)
+ c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
+ avio_rb32(pb); /* preferred scale */
+
+ avio_rb16(pb); /* preferred volume */
+
+ avio_skip(pb, 10); /* reserved */
+
+ avio_skip(pb, 36); /* display matrix */
+
+ avio_rb32(pb); /* preview time */
+ avio_rb32(pb); /* preview duration */
+ avio_rb32(pb); /* poster time */
+ avio_rb32(pb); /* selection time */
+ avio_rb32(pb); /* selection duration */
+ avio_rb32(pb); /* current time */
+ avio_rb32(pb); /* next track ID */
+ return 0;
+}
+
+static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ int little_endian;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ little_endian = avio_rb16(pb) & 0xFF;
+ av_dlog(c->fc, "enda %d\n", little_endian);
+ if (little_endian == 1) {
+ switch (st->codec->codec_id) {
+ case AV_CODEC_ID_PCM_S24BE:
+ st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
+ break;
+ case AV_CODEC_ID_PCM_S32BE:
+ st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
+ break;
+ case AV_CODEC_ID_PCM_F32BE:
+ st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
+ break;
+ case AV_CODEC_ID_PCM_F64BE:
+ st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
+ break;
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ unsigned mov_field_order;
+ enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
+
+ if (c->fc->nb_streams < 1) // will happen with jp2 files
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ if (atom.size < 2)
+ return AVERROR_INVALIDDATA;
+ mov_field_order = avio_rb16(pb);
+ if ((mov_field_order & 0xFF00) == 0x0100)
+ decoded_field_order = AV_FIELD_PROGRESSIVE;
+ else if ((mov_field_order & 0xFF00) == 0x0200) {
+ switch (mov_field_order & 0xFF) {
+ case 0x01: decoded_field_order = AV_FIELD_TT;
+ break;
+ case 0x06: decoded_field_order = AV_FIELD_BB;
+ break;
+ case 0x09: decoded_field_order = AV_FIELD_TB;
+ break;
+ case 0x0E: decoded_field_order = AV_FIELD_BT;
+ break;
+ }
+ }
+ if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
+ av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
+ }
+ st->codec->field_order = decoded_field_order;
+
+ return 0;
+}
+
+/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
+static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
+ enum AVCodecID codec_id)
+{
+ AVStream *st;
+ uint64_t size;
+ uint8_t *buf;
+
+ if (c->fc->nb_streams < 1) // will happen with jp2 files
+ return 0;
+ st= c->fc->streams[c->fc->nb_streams-1];
+
+ if (st->codec->codec_id != codec_id)
+ return 0; /* unexpected codec_id - don't mess with extradata */
+
+ size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
+ if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
+ return AVERROR_INVALIDDATA;
+ buf= av_realloc(st->codec->extradata, size);
+ if (!buf)
+ return AVERROR(ENOMEM);
+ st->codec->extradata= buf;
+ buf+= st->codec->extradata_size;
+ st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
+ AV_WB32( buf , atom.size + 8);
+ AV_WL32( buf + 4, atom.type);
+ avio_read(pb, buf + 8, atom.size);
+ return 0;
+}
+
+/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
+static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
+}
+
+static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
+}
+
+static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
+}
+
+static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
+}
+
+static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
+}
+
+static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if ((uint64_t)atom.size > (1<<30))
+ return AVERROR_INVALIDDATA;
+
+ if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
+ // pass all frma atom to codec, needed at least for QDMC and QDM2
+ av_free(st->codec->extradata);
+ st->codec->extradata_size = 0;
+ st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = atom.size;
+ avio_read(pb, st->codec->extradata, atom.size);
+ } else if (atom.size > 8) { /* to read frma, esds atoms */
+ int ret;
+ if ((ret = mov_read_default(c, pb, atom)) < 0)
+ return ret;
+ } else
+ avio_skip(pb, atom.size);
+ return 0;
+}
+
+/**
+ * This function reads atom content and puts data in extradata without tag
+ * nor size unlike mov_read_extradata.
+ */
+static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if ((uint64_t)atom.size > (1<<30))
+ return AVERROR_INVALIDDATA;
+
+ if (atom.size >= 10) {
+ // Broken files created by legacy versions of libavformat will
+ // wrap a whole fiel atom inside of a glbl atom.
+ unsigned size = avio_rb32(pb);
+ unsigned type = avio_rl32(pb);
+ avio_seek(pb, -8, SEEK_CUR);
+ if (type == MKTAG('f','i','e','l') && size == atom.size)
+ return mov_read_default(c, pb, atom);
+ }
+ av_free(st->codec->extradata);
+ st->codec->extradata_size = 0;
+ st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = atom.size;
+ avio_read(pb, st->codec->extradata, atom.size);
+ return 0;
+}
+
+static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ uint8_t profile_level;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if (atom.size >= (1<<28) || atom.size < 7)
+ return AVERROR_INVALIDDATA;
+
+ profile_level = avio_r8(pb);
+ if ((profile_level & 0xf0) != 0xc0)
+ return 0;
+
+ av_free(st->codec->extradata);
+ st->codec->extradata_size = 0;
+ st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = atom.size - 7;
+ avio_seek(pb, 6, SEEK_CUR);
+ avio_read(pb, st->codec->extradata, st->codec->extradata_size);
+ return 0;
+}
+
+/**
+ * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
+ * but can have extradata appended at the end after the 40 bytes belonging
+ * to the struct.
+ */
+static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ if (atom.size <= 40)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if ((uint64_t)atom.size > (1<<30))
+ return AVERROR_INVALIDDATA;
+
+ av_free(st->codec->extradata);
+ st->codec->extradata_size = 0;
+ st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = atom.size - 40;
+ avio_skip(pb, 40);
+ avio_read(pb, st->codec->extradata, atom.size - 40);
+ return 0;
+}
+
+static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+
+ entries = avio_rb32(pb);
+
+ if (!entries)
+ return 0;
+ if (entries >= UINT_MAX/sizeof(int64_t))
+ return AVERROR_INVALIDDATA;
+
+ sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
+ if (!sc->chunk_offsets)
+ return AVERROR(ENOMEM);
+ sc->chunk_count = entries;
+
+ if (atom.type == MKTAG('s','t','c','o'))
+ for (i = 0; i < entries && !pb->eof_reached; i++)
+ sc->chunk_offsets[i] = avio_rb32(pb);
+ else if (atom.type == MKTAG('c','o','6','4'))
+ for (i = 0; i < entries && !pb->eof_reached; i++)
+ sc->chunk_offsets[i] = avio_rb64(pb);
+ else
+ return AVERROR_INVALIDDATA;
+
+ sc->chunk_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ return 0;
+}
+
+/**
+ * Compute codec id for 'lpcm' tag.
+ * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
+ */
+enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
+{
+ /* lpcm flags:
+ * 0x1 = float
+ * 0x2 = big-endian
+ * 0x4 = signed
+ */
+ return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
+}
+
+int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ int j, pseudo_stream_id;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ for (pseudo_stream_id = 0;
+ pseudo_stream_id < entries && !pb->eof_reached;
+ pseudo_stream_id++) {
+ //Parsing Sample description table
+ enum AVCodecID id;
+ int dref_id = 1;
+ MOVAtom a = { AV_RL32("stsd") };
+ int64_t start_pos = avio_tell(pb);
+ int64_t size = avio_rb32(pb); /* size */
+ uint32_t format = avio_rl32(pb); /* data format */
+
+ if (size >= 16) {
+ avio_rb32(pb); /* reserved */
+ avio_rb16(pb); /* reserved */
+ dref_id = avio_rb16(pb);
+ }else if (size <= 7){
+ av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (st->codec->codec_tag &&
+ st->codec->codec_tag != format &&
+ (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
+ : st->codec->codec_tag != MKTAG('j','p','e','g'))
+ ){
+ /* Multiple fourcc, we skip JPEG. This is not correct, we should
+ * export it as a separate AVStream but this needs a few changes
+ * in the MOV demuxer, patch welcome. */
+ av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
+ avio_skip(pb, size - (avio_tell(pb) - start_pos));
+ continue;
+ }
+ /* we cannot demux concatenated h264 streams because of different extradata */
+ if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
+ av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n");
+ sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
+ sc->dref_id= dref_id;
+
+ st->codec->codec_tag = format;
+ id = ff_codec_get_id(ff_codec_movaudio_tags, format);
+ if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
+ id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
+
+ if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
+ format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
+ id = ff_codec_get_id(ff_codec_movvideo_tags, format);
+ if (id <= 0)
+ id = ff_codec_get_id(ff_codec_bmp_tags, format);
+ if (id > 0)
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
+ (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
+ st->codec->codec_id == AV_CODEC_ID_NONE)){
+ id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
+ if (id > 0)
+ st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+ }
+ }
+
+ av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
+ (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
+ (format >> 24) & 0xff, st->codec->codec_type);
+
+ if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
+ unsigned int color_depth, len;
+ int color_greyscale;
+ int color_table_id;
+
+ st->codec->codec_id = id;
+ avio_rb16(pb); /* version */
+ avio_rb16(pb); /* revision level */
+ avio_rb32(pb); /* vendor */
+ avio_rb32(pb); /* temporal quality */
+ avio_rb32(pb); /* spatial quality */
+
+ st->codec->width = avio_rb16(pb); /* width */
+ st->codec->height = avio_rb16(pb); /* height */
+
+ avio_rb32(pb); /* horiz resolution */
+ avio_rb32(pb); /* vert resolution */
+ avio_rb32(pb); /* data size, always 0 */
+ avio_rb16(pb); /* frames per samples */
+
+ len = avio_r8(pb); /* codec name, pascal string */
+ if (len > 31)
+ len = 31;
+ mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
+ if (len < 31)
+ avio_skip(pb, 31 - len);
+ /* codec_tag YV12 triggers an UV swap in rawdec.c */
+ if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)){
+ st->codec->codec_tag=MKTAG('I', '4', '2', '0');
+ st->codec->width &= ~1;
+ st->codec->height &= ~1;
+ }
+ /* Flash Media Server uses tag H263 with Sorenson Spark */
+ if (format == MKTAG('H','2','6','3') &&
+ !memcmp(st->codec->codec_name, "Sorenson H263", 13))
+ st->codec->codec_id = AV_CODEC_ID_FLV1;
+
+ st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
+ color_table_id = avio_rb16(pb); /* colortable id */
+ av_dlog(c->fc, "depth %d, ctab id %d\n",
+ st->codec->bits_per_coded_sample, color_table_id);
+ /* figure out the palette situation */
+ color_depth = st->codec->bits_per_coded_sample & 0x1F;
+ color_greyscale = st->codec->bits_per_coded_sample & 0x20;
+
+ /* if the depth is 2, 4, or 8 bpp, file is palettized */
+ if ((color_depth == 2) || (color_depth == 4) ||
+ (color_depth == 8)) {
+ /* for palette traversal */
+ unsigned int color_start, color_count, color_end;
+ unsigned char a, r, g, b;
+
+ if (color_greyscale) {
+ int color_index, color_dec;
+ /* compute the greyscale palette */
+ st->codec->bits_per_coded_sample = color_depth;
+ color_count = 1 << color_depth;
+ color_index = 255;
+ color_dec = 256 / (color_count - 1);
+ for (j = 0; j < color_count; j++) {
+ if (id == AV_CODEC_ID_CINEPAK){
+ r = g = b = color_count - 1 - color_index;
+ }else
+ r = g = b = color_index;
+ sc->palette[j] =
+ (0xFFU << 24) | (r << 16) | (g << 8) | (b);
+ color_index -= color_dec;
+ if (color_index < 0)
+ color_index = 0;
+ }
+ } else if (color_table_id) {
+ const uint8_t *color_table;
+ /* if flag bit 3 is set, use the default palette */
+ color_count = 1 << color_depth;
+ if (color_depth == 2)
+ color_table = ff_qt_default_palette_4;
+ else if (color_depth == 4)
+ color_table = ff_qt_default_palette_16;
+ else
+ color_table = ff_qt_default_palette_256;
+
+ for (j = 0; j < color_count; j++) {
+ r = color_table[j * 3 + 0];
+ g = color_table[j * 3 + 1];
+ b = color_table[j * 3 + 2];
+ sc->palette[j] =
+ (0xFFU << 24) | (r << 16) | (g << 8) | (b);
+ }
+ } else {
+ /* load the palette from the file */
+ color_start = avio_rb32(pb);
+ color_count = avio_rb16(pb);
+ color_end = avio_rb16(pb);
+ if ((color_start <= 255) &&
+ (color_end <= 255)) {
+ for (j = color_start; j <= color_end; j++) {
+ /* each A, R, G, or B component is 16 bits;
+ * only use the top 8 bits */
+ a = avio_r8(pb);
+ avio_r8(pb);
+ r = avio_r8(pb);
+ avio_r8(pb);
+ g = avio_r8(pb);
+ avio_r8(pb);
+ b = avio_r8(pb);
+ avio_r8(pb);
+ sc->palette[j] =
+ (a << 24 ) | (r << 16) | (g << 8) | (b);
+ }
+ }
+ }
+ sc->has_palette = 1;
+ }
+ } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
+ int bits_per_sample, flags;
+ uint16_t version = avio_rb16(pb);
+ AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
+
+ st->codec->codec_id = id;
+ avio_rb16(pb); /* revision level */
+ avio_rb32(pb); /* vendor */
+
+ st->codec->channels = avio_rb16(pb); /* channel count */
+ av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
+ st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
+
+ sc->audio_cid = avio_rb16(pb);
+ avio_rb16(pb); /* packet size = 0 */
+
+ st->codec->sample_rate = ((avio_rb32(pb) >> 16));
+
+ //Read QT version 1 fields. In version 0 these do not exist.
+ av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
+ if (!c->isom ||
+ (compatible_brands && strstr(compatible_brands->value, "qt "))) {
+ if (version==1) {
+ sc->samples_per_frame = avio_rb32(pb);
+ avio_rb32(pb); /* bytes per packet */
+ sc->bytes_per_frame = avio_rb32(pb);
+ avio_rb32(pb); /* bytes per sample */
+ } else if (version==2) {
+ avio_rb32(pb); /* sizeof struct only */
+ st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
+ st->codec->channels = avio_rb32(pb);
+ avio_rb32(pb); /* always 0x7F000000 */
+ st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
+ flags = avio_rb32(pb); /* lpcm format specific flag */
+ sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
+ sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
+ if (format == MKTAG('l','p','c','m'))
+ st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
+ }
+ }
+
+ switch (st->codec->codec_id) {
+ case AV_CODEC_ID_PCM_S8:
+ case AV_CODEC_ID_PCM_U8:
+ if (st->codec->bits_per_coded_sample == 16)
+ st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
+ break;
+ case AV_CODEC_ID_PCM_S16LE:
+ case AV_CODEC_ID_PCM_S16BE:
+ if (st->codec->bits_per_coded_sample == 8)
+ st->codec->codec_id = AV_CODEC_ID_PCM_S8;
+ else if (st->codec->bits_per_coded_sample == 24)
+ st->codec->codec_id =
+ st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
+ AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
+ break;
+ /* set values for old format before stsd version 1 appeared */
+ case AV_CODEC_ID_MACE3:
+ sc->samples_per_frame = 6;
+ sc->bytes_per_frame = 2*st->codec->channels;
+ break;
+ case AV_CODEC_ID_MACE6:
+ sc->samples_per_frame = 6;
+ sc->bytes_per_frame = 1*st->codec->channels;
+ break;
+ case AV_CODEC_ID_ADPCM_IMA_QT:
+ sc->samples_per_frame = 64;
+ sc->bytes_per_frame = 34*st->codec->channels;
+ break;
+ case AV_CODEC_ID_GSM:
+ sc->samples_per_frame = 160;
+ sc->bytes_per_frame = 33;
+ break;
+ default:
+ break;
+ }
+
+ bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
+ if (bits_per_sample) {
+ st->codec->bits_per_coded_sample = bits_per_sample;
+ sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
+ }
+ } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
+ // ttxt stsd contains display flags, justification, background
+ // color, fonts, and default styles, so fake an atom to read it
+ MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
+ if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
+ mov_read_glbl(c, pb, fake_atom);
+ st->codec->codec_id= id;
+ st->codec->width = sc->width;
+ st->codec->height = sc->height;
+ } else {
+ if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
+ MOVStreamContext *tmcd_ctx = st->priv_data;
+ int val;
+ avio_rb32(pb); /* reserved */
+ val = avio_rb32(pb); /* flags */
+ tmcd_ctx->tmcd_flags = val;
+ if (val & 1)
+ st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
+ avio_rb32(pb); /* time scale */
+ avio_rb32(pb); /* frame duration */
+ st->codec->time_base.den = avio_r8(pb); /* number of frame */
+ st->codec->time_base.num = 1;
+ }
+ /* other codec type, just skip (rtp, mp4s, ...) */
+ avio_skip(pb, size - (avio_tell(pb) - start_pos));
+ }
+ /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
+ a.size = size - (avio_tell(pb) - start_pos);
+ if (a.size > 8) {
+ int ret;
+ if ((ret = mov_read_default(c, pb, a)) < 0)
+ return ret;
+ } else if (a.size > 0)
+ avio_skip(pb, a.size);
+ }
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
+ st->codec->sample_rate= sc->time_scale;
+
+ /* special codec parameters handling */
+ switch (st->codec->codec_id) {
+#if CONFIG_DV_DEMUXER
+ case AV_CODEC_ID_DVAUDIO:
+ c->dv_fctx = avformat_alloc_context();
+ c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
+ if (!c->dv_demux) {
+ av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
+ return AVERROR(ENOMEM);
+ }
+ sc->dv_audio_container = 1;
+ st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
+ break;
+#endif
+ /* no ifdef since parameters are always those */
+ case AV_CODEC_ID_QCELP:
+ // force sample rate for qcelp when not stored in mov
+ if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
+ st->codec->sample_rate = 8000;
+ st->codec->channels= 1; /* really needed */
+ break;
+ case AV_CODEC_ID_AMR_NB:
+ st->codec->channels= 1; /* really needed */
+ /* force sample rate for amr, stsd in 3gp does not store sample rate */
+ st->codec->sample_rate = 8000;
+ break;
+ case AV_CODEC_ID_AMR_WB:
+ st->codec->channels = 1;
+ st->codec->sample_rate = 16000;
+ break;
+ case AV_CODEC_ID_MP2:
+ case AV_CODEC_ID_MP3:
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ break;
+ case AV_CODEC_ID_GSM:
+ case AV_CODEC_ID_ADPCM_MS:
+ case AV_CODEC_ID_ADPCM_IMA_WAV:
+ case AV_CODEC_ID_ILBC:
+ st->codec->block_align = sc->bytes_per_frame;
+ break;
+ case AV_CODEC_ID_ALAC:
+ if (st->codec->extradata_size == 36) {
+ st->codec->channels = AV_RB8 (st->codec->extradata+21);
+ st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
+ }
+ break;
+ case AV_CODEC_ID_AC3:
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ break;
+ case AV_CODEC_ID_MPEG1VIDEO:
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ break;
+ case AV_CODEC_ID_VC1:
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int entries;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+ entries = avio_rb32(pb);
+
+ return ff_mov_read_stsd_entries(c, pb, entries);
+}
+
+static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+
+ entries = avio_rb32(pb);
+
+ av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
+
+ if (!entries)
+ return 0;
+ if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
+ return AVERROR_INVALIDDATA;
+ sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
+ if (!sc->stsc_data)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ sc->stsc_data[i].first = avio_rb32(pb);
+ sc->stsc_data[i].count = avio_rb32(pb);
+ sc->stsc_data[i].id = avio_rb32(pb);
+ }
+
+ sc->stsc_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ return 0;
+}
+
+static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned i, entries;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_rb32(pb); // version + flags
+
+ entries = avio_rb32(pb);
+ if (entries >= UINT_MAX / sizeof(*sc->stps_data))
+ return AVERROR_INVALIDDATA;
+ sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
+ if (!sc->stps_data)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ sc->stps_data[i] = avio_rb32(pb);
+ //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
+ }
+
+ sc->stps_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ return 0;
+}
+
+static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+
+ entries = avio_rb32(pb);
+
+ av_dlog(c->fc, "keyframe_count = %d\n", entries);
+
+ if (!entries)
+ {
+ sc->keyframe_absent = 1;
+ return 0;
+ }
+ if (entries >= UINT_MAX / sizeof(int))
+ return AVERROR_INVALIDDATA;
+ sc->keyframes = av_malloc(entries * sizeof(int));
+ if (!sc->keyframes)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ sc->keyframes[i] = avio_rb32(pb);
+ //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
+ }
+
+ sc->keyframe_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ return 0;
+}
+
+static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries, sample_size, field_size, num_bytes;
+ GetBitContext gb;
+ unsigned char* buf;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+
+ if (atom.type == MKTAG('s','t','s','z')) {
+ sample_size = avio_rb32(pb);
+ if (!sc->sample_size) /* do not overwrite value computed in stsd */
+ sc->sample_size = sample_size;
+ sc->alt_sample_size = sample_size;
+ field_size = 32;
+ } else {
+ sample_size = 0;
+ avio_rb24(pb); /* reserved */
+ field_size = avio_r8(pb);
+ }
+ entries = avio_rb32(pb);
+
+ av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
+
+ sc->sample_count = entries;
+ if (sample_size)
+ return 0;
+
+ if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
+ av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (!entries)
+ return 0;
+ if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
+ return AVERROR_INVALIDDATA;
+ sc->sample_sizes = av_malloc(entries * sizeof(int));
+ if (!sc->sample_sizes)
+ return AVERROR(ENOMEM);
+
+ num_bytes = (entries*field_size+4)>>3;
+
+ buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!buf) {
+ av_freep(&sc->sample_sizes);
+ return AVERROR(ENOMEM);
+ }
+
+ if (avio_read(pb, buf, num_bytes) < num_bytes) {
+ av_freep(&sc->sample_sizes);
+ av_free(buf);
+ return AVERROR_INVALIDDATA;
+ }
+
+ init_get_bits(&gb, buf, 8*num_bytes);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ sc->sample_sizes[i] = get_bits_long(&gb, field_size);
+ sc->data_size += sc->sample_sizes[i];
+ }
+
+ sc->sample_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ av_free(buf);
+ return 0;
+}
+
+static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries;
+ int64_t duration=0;
+ int64_t total_sample_count=0;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+ entries = avio_rb32(pb);
+
+ av_dlog(c->fc, "track[%i].stts.entries = %i\n",
+ c->fc->nb_streams-1, entries);
+
+ if (entries >= UINT_MAX / sizeof(*sc->stts_data))
+ return -1;
+
+ sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
+ if (!sc->stts_data)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ int sample_duration;
+ int sample_count;
+
+ sample_count=avio_rb32(pb);
+ sample_duration = avio_rb32(pb);
+ /* sample_duration < 0 is invalid based on the spec */
+ if (sample_duration < 0) {
+ av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
+ sample_duration = 1;
+ }
+ sc->stts_data[i].count= sample_count;
+ sc->stts_data[i].duration= sample_duration;
+
+ av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
+ sample_count, sample_duration);
+
+ duration+=(int64_t)sample_duration*sample_count;
+ total_sample_count+=sample_count;
+ }
+
+ sc->stts_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ st->nb_frames= total_sample_count;
+ if (duration)
+ st->duration= duration;
+ sc->track_end = duration;
+ return 0;
+}
+
+static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+ entries = avio_rb32(pb);
+
+ av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
+
+ if (!entries)
+ return 0;
+ if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
+ return AVERROR_INVALIDDATA;
+ sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
+ if (!sc->ctts_data)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ int count =avio_rb32(pb);
+ int duration =avio_rb32(pb);
+
+ sc->ctts_data[i].count = count;
+ sc->ctts_data[i].duration= duration;
+
+ av_dlog(c->fc, "count=%d, duration=%d\n",
+ count, duration);
+
+ if (FFABS(duration) > (1<<28) && i+2<entries) {
+ av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
+ av_freep(&sc->ctts_data);
+ sc->ctts_count = 0;
+ return 0;
+ }
+
+ if (duration < 0 && i+2<entries)
+ sc->dts_shift = FFMAX(sc->dts_shift, -duration);
+ }
+
+ sc->ctts_count = i;
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
+
+ return 0;
+}
+
+static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ unsigned int i, entries;
+ uint8_t version;
+ uint32_t grouping_type;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ version = avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+ grouping_type = avio_rl32(pb);
+ if (grouping_type != MKTAG( 'r','a','p',' '))
+ return 0; /* only support 'rap ' grouping */
+ if (version == 1)
+ avio_rb32(pb); /* grouping_type_parameter */
+
+ entries = avio_rb32(pb);
+ if (!entries)
+ return 0;
+ if (entries >= UINT_MAX / sizeof(*sc->rap_group))
+ return AVERROR_INVALIDDATA;
+ sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
+ if (!sc->rap_group)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
+ sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
+ }
+
+ sc->rap_group_count = i;
+
+ return pb->eof_reached ? AVERROR_EOF : 0;
+}
+
+static void mov_build_index(MOVContext *mov, AVStream *st)
+{
+ MOVStreamContext *sc = st->priv_data;
+ int64_t current_offset;
+ int64_t current_dts = 0;
+ unsigned int stts_index = 0;
+ unsigned int stsc_index = 0;
+ unsigned int stss_index = 0;
+ unsigned int stps_index = 0;
+ unsigned int i, j;
+ uint64_t stream_size = 0;
+ AVIndexEntry *mem;
+
+ /* adjust first dts according to edit list */
+ if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
+ if (sc->empty_duration)
+ sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
+ sc->time_offset = sc->start_time - sc->empty_duration;
+ current_dts = -sc->time_offset;
+ if (sc->ctts_count>0 && sc->stts_count>0 &&
+ sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
+ /* more than 16 frames delay, dts are likely wrong
+ this happens with files created by iMovie */
+ sc->wrong_dts = 1;
+ st->codec->has_b_frames = 1;
+ }
+ }
+
+ /* only use old uncompressed audio chunk demuxing when stts specifies it */
+ if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
+ sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
+ unsigned int current_sample = 0;
+ unsigned int stts_sample = 0;
+ unsigned int sample_size;
+ unsigned int distance = 0;
+ unsigned int rap_group_index = 0;
+ unsigned int rap_group_sample = 0;
+ int rap_group_present = sc->rap_group_count && sc->rap_group;
+ int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
+
+ current_dts -= sc->dts_shift;
+
+ if (!sc->sample_count || st->nb_index_entries)
+ return;
+ if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
+ return;
+ mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
+ if (!mem)
+ return;
+ st->index_entries = mem;
+ st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
+
+ for (i = 0; i < sc->chunk_count; i++) {
+ current_offset = sc->chunk_offsets[i];
+ while (stsc_index + 1 < sc->stsc_count &&
+ i + 1 == sc->stsc_data[stsc_index + 1].first)
+ stsc_index++;
+ for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
+ int keyframe = 0;
+ if (current_sample >= sc->sample_count) {
+ av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
+ return;
+ }
+
+ if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
+ keyframe = 1;
+ if (stss_index + 1 < sc->keyframe_count)
+ stss_index++;
+ } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
+ keyframe = 1;
+ if (stps_index + 1 < sc->stps_count)
+ stps_index++;
+ }
+ if (rap_group_present && rap_group_index < sc->rap_group_count) {
+ if (sc->rap_group[rap_group_index].index > 0)
+ keyframe = 1;
+ if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
+ rap_group_sample = 0;
+ rap_group_index++;
+ }
+ }
+ if (keyframe)
+ distance = 0;
+ sample_size = sc->alt_sample_size > 0 ? sc->alt_sample_size : sc->sample_sizes[current_sample];
+ if (sc->pseudo_stream_id == -1 ||
+ sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
+ AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
+ e->pos = current_offset;
+ e->timestamp = current_dts;
+ e->size = sample_size;
+ e->min_distance = distance;
+ e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
+ av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
+ "size %d, distance %d, keyframe %d\n", st->index, current_sample,
+ current_offset, current_dts, sample_size, distance, keyframe);
+ }
+
+ current_offset += sample_size;
+ stream_size += sample_size;
+ current_dts += sc->stts_data[stts_index].duration;
+ distance++;
+ stts_sample++;
+ current_sample++;
+ if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
+ stts_sample = 0;
+ stts_index++;
+ }
+ }
+ }
+ if (st->duration > 0)
+ st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
+ } else {
+ unsigned chunk_samples, total = 0;
+
+ // compute total chunk count
+ for (i = 0; i < sc->stsc_count; i++) {
+ unsigned count, chunk_count;
+
+ chunk_samples = sc->stsc_data[i].count;
+ if (i != sc->stsc_count - 1 &&
+ sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
+ av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
+ return;
+ }
+
+ if (sc->samples_per_frame >= 160) { // gsm
+ count = chunk_samples / sc->samples_per_frame;
+ } else if (sc->samples_per_frame > 1) {
+ unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
+ count = (chunk_samples+samples-1) / samples;
+ } else {
+ count = (chunk_samples+1023) / 1024;
+ }
+
+ if (i < sc->stsc_count - 1)
+ chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
+ else
+ chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
+ total += chunk_count * count;
+ }
+
+ av_dlog(mov->fc, "chunk count %d\n", total);
+ if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
+ return;
+ mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
+ if (!mem)
+ return;
+ st->index_entries = mem;
+ st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
+
+ // populate index
+ for (i = 0; i < sc->chunk_count; i++) {
+ current_offset = sc->chunk_offsets[i];
+ if (stsc_index + 1 < sc->stsc_count &&
+ i + 1 == sc->stsc_data[stsc_index + 1].first)
+ stsc_index++;
+ chunk_samples = sc->stsc_data[stsc_index].count;
+
+ while (chunk_samples > 0) {
+ AVIndexEntry *e;
+ unsigned size, samples;
+
+ if (sc->samples_per_frame >= 160) { // gsm
+ samples = sc->samples_per_frame;
+ size = sc->bytes_per_frame;
+ } else {
+ if (sc->samples_per_frame > 1) {
+ samples = FFMIN((1024 / sc->samples_per_frame)*
+ sc->samples_per_frame, chunk_samples);
+ size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
+ } else {
+ samples = FFMIN(1024, chunk_samples);
+ size = samples * sc->sample_size;
+ }
+ }
+
+ if (st->nb_index_entries >= total) {
+ av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
+ return;
+ }
+ e = &st->index_entries[st->nb_index_entries++];
+ e->pos = current_offset;
+ e->timestamp = current_dts;
+ e->size = size;
+ e->min_distance = 0;
+ e->flags = AVINDEX_KEYFRAME;
+ av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
+ "size %d, duration %d\n", st->index, i, current_offset, current_dts,
+ size, samples);
+
+ current_offset += size;
+ current_dts += samples;
+ chunk_samples -= samples;
+ }
+ }
+ }
+}
+
+static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
+ AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
+{
+ /* try relative path, we do not try the absolute because it can leak information about our
+ system to an attacker */
+ if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
+ char filename[1024];
+ const char *src_path;
+ int i, l;
+
+ /* find a source dir */
+ src_path = strrchr(src, '/');
+ if (src_path)
+ src_path++;
+ else
+ src_path = src;
+
+ /* find a next level down to target */
+ for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
+ if (ref->path[l] == '/') {
+ if (i == ref->nlvl_to - 1)
+ break;
+ else
+ i++;
+ }
+
+ /* compose filename if next level down to target was found */
+ if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
+ memcpy(filename, src, src_path - src);
+ filename[src_path - src] = 0;
+
+ for (i = 1; i < ref->nlvl_from; i++)
+ av_strlcat(filename, "../", 1024);
+
+ av_strlcat(filename, ref->path + l + 1, 1024);
+
+ if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
+ return 0;
+ }
+ } else if (use_absolute_path) {
+ av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
+ "this is a possible security issue\n");
+ if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
+ return 0;
+ }
+
+ return AVERROR(ENOENT);
+}
+
+static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
+{
+ if (sc->time_scale <= 0) {
+ av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
+ sc->time_scale = c->time_scale;
+ if (sc->time_scale <= 0)
+ sc->time_scale = 1;
+ }
+}
+
+static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+ int ret;
+
+ st = avformat_new_stream(c->fc, NULL);
+ if (!st) return AVERROR(ENOMEM);
+ st->id = c->fc->nb_streams;
+ sc = av_mallocz(sizeof(MOVStreamContext));
+ if (!sc) return AVERROR(ENOMEM);
+
+ st->priv_data = sc;
+ st->codec->codec_type = AVMEDIA_TYPE_DATA;
+ sc->ffindex = st->index;
+
+ if ((ret = mov_read_default(c, pb, atom)) < 0)
+ return ret;
+
+ /* sanity checks */
+ if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
+ (!sc->sample_size && !sc->sample_count))) {
+ av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
+ st->index);
+ return 0;
+ }
+
+ fix_timescale(c, sc);
+
+ avpriv_set_pts_info(st, 64, 1, sc->time_scale);
+
+ mov_build_index(c, st);
+
+ if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
+ MOVDref *dref = &sc->drefs[sc->dref_id - 1];
+ if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
+ c->use_absolute_path, c->fc) < 0)
+ av_log(c->fc, AV_LOG_ERROR,
+ "stream %d, error opening alias: path='%s', dir='%s', "
+ "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
+ st->index, dref->path, dref->dir, dref->filename,
+ dref->volume, dref->nlvl_from, dref->nlvl_to);
+ } else {
+ sc->pb = c->fc->pb;
+ sc->pb_is_copied = 1;
+ }
+
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if (!st->sample_aspect_ratio.num &&
+ (st->codec->width != sc->width || st->codec->height != sc->height)) {
+ st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
+ ((double)st->codec->width * sc->height), INT_MAX);
+ }
+
+ if (st->duration > 0)
+ av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
+ sc->time_scale*st->nb_frames, st->duration, INT_MAX);
+
+#if FF_API_R_FRAME_RATE
+ if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
+ av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
+ sc->time_scale, sc->stts_data[0].duration, INT_MAX);
+#endif
+ }
+
+ // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
+ if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
+ st->codec->codec_tag != MKTAG('a', 'v', 'c', '1')) {
+ ff_generate_avci_extradata(st);
+ }
+
+ switch (st->codec->codec_id) {
+#if CONFIG_H261_DECODER
+ case AV_CODEC_ID_H261:
+#endif
+#if CONFIG_H263_DECODER
+ case AV_CODEC_ID_H263:
+#endif
+#if CONFIG_MPEG4_DECODER
+ case AV_CODEC_ID_MPEG4:
+#endif
+ st->codec->width = 0; /* let decoder init width/height */
+ st->codec->height= 0;
+ break;
+ }
+
+ /* Do not need those anymore. */
+ av_freep(&sc->chunk_offsets);
+ av_freep(&sc->stsc_data);
+ av_freep(&sc->sample_sizes);
+ av_freep(&sc->keyframes);
+ av_freep(&sc->stts_data);
+ av_freep(&sc->stps_data);
+ av_freep(&sc->rap_group);
+
+ return 0;
+}
+
+static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int ret;
+ c->itunes_metadata = 1;
+ ret = mov_read_default(c, pb, atom);
+ c->itunes_metadata = 0;
+ return ret;
+}
+
+static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ while (atom.size > 8) {
+ uint32_t tag = avio_rl32(pb);
+ atom.size -= 4;
+ if (tag == MKTAG('h','d','l','r')) {
+ avio_seek(pb, -8, SEEK_CUR);
+ atom.size += 8;
+ return mov_read_default(c, pb, atom);
+ }
+ }
+ return 0;
+}
+
+static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int i;
+ int width;
+ int height;
+ int64_t disp_transform[2];
+ int display_matrix[3][2];
+ AVStream *st;
+ MOVStreamContext *sc;
+ int version;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+ sc = st->priv_data;
+
+ version = avio_r8(pb);
+ avio_rb24(pb); /* flags */
+ /*
+ MOV_TRACK_ENABLED 0x0001
+ MOV_TRACK_IN_MOVIE 0x0002
+ MOV_TRACK_IN_PREVIEW 0x0004
+ MOV_TRACK_IN_POSTER 0x0008
+ */
+
+ if (version == 1) {
+ avio_rb64(pb);
+ avio_rb64(pb);
+ } else {
+ avio_rb32(pb); /* creation time */
+ avio_rb32(pb); /* modification time */
+ }
+ st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
+ avio_rb32(pb); /* reserved */
+
+ /* highlevel (considering edits) duration in movie timebase */
+ (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
+ avio_rb32(pb); /* reserved */
+ avio_rb32(pb); /* reserved */
+
+ avio_rb16(pb); /* layer */
+ avio_rb16(pb); /* alternate group */
+ avio_rb16(pb); /* volume */
+ avio_rb16(pb); /* reserved */
+
+ //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
+ // they're kept in fixed point format through all calculations
+ // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
+ for (i = 0; i < 3; i++) {
+ display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
+ display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
+ avio_rb32(pb); // 2.30 fixed point (not used)
+ }
+
+ width = avio_rb32(pb); // 16.16 fixed point track width
+ height = avio_rb32(pb); // 16.16 fixed point track height
+ sc->width = width >> 16;
+ sc->height = height >> 16;
+
+ //Assign clockwise rotate values based on transform matrix so that
+ //we can compensate for iPhone orientation during capture.
+
+ if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
+ av_dict_set(&st->metadata, "rotate", "90", 0);
+ }
+
+ if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
+ av_dict_set(&st->metadata, "rotate", "180", 0);
+ }
+
+ if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
+ av_dict_set(&st->metadata, "rotate", "270", 0);
+ }
+
+ // transform the display width/height according to the matrix
+ // skip this if the display matrix is the default identity matrix
+ // or if it is rotating the picture, ex iPhone 3GS
+ // to keep the same scale, use [width height 1<<16]
+ if (width && height &&
+ ((display_matrix[0][0] != 65536 ||
+ display_matrix[1][1] != 65536) &&
+ !display_matrix[0][1] &&
+ !display_matrix[1][0] &&
+ !display_matrix[2][0] && !display_matrix[2][1])) {
+ for (i = 0; i < 2; i++)
+ disp_transform[i] =
+ (int64_t) width * display_matrix[0][i] +
+ (int64_t) height * display_matrix[1][i] +
+ ((int64_t) display_matrix[2][i] << 16);
+
+ //sample aspect ratio is new width/height divided by old width/height
+ st->sample_aspect_ratio = av_d2q(
+ ((double) disp_transform[0] * height) /
+ ((double) disp_transform[1] * width), INT_MAX);
+ }
+ return 0;
+}
+
+static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ MOVFragment *frag = &c->fragment;
+ MOVTrackExt *trex = NULL;
+ int flags, track_id, i;
+
+ avio_r8(pb); /* version */
+ flags = avio_rb24(pb);
+
+ track_id = avio_rb32(pb);
+ if (!track_id)
+ return AVERROR_INVALIDDATA;
+ frag->track_id = track_id;
+ for (i = 0; i < c->trex_count; i++)
+ if (c->trex_data[i].track_id == frag->track_id) {
+ trex = &c->trex_data[i];
+ break;
+ }
+ if (!trex) {
+ av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
+ avio_rb64(pb) : frag->moof_offset;
+ frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
+
+ frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
+ avio_rb32(pb) : trex->duration;
+ frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
+ avio_rb32(pb) : trex->size;
+ frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
+ avio_rb32(pb) : trex->flags;
+ av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
+ return 0;
+}
+
+static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ c->chapter_track = avio_rb32(pb);
+ return 0;
+}
+
+static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ MOVTrackExt *trex;
+
+ if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
+ return AVERROR_INVALIDDATA;
+ trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
+ if (!trex)
+ return AVERROR(ENOMEM);
+
+ c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
+
+ c->trex_data = trex;
+ trex = &c->trex_data[c->trex_count++];
+ avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+ trex->track_id = avio_rb32(pb);
+ trex->stsd_id = avio_rb32(pb);
+ trex->duration = avio_rb32(pb);
+ trex->size = avio_rb32(pb);
+ trex->flags = avio_rb32(pb);
+ return 0;
+}
+
+static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ MOVFragment *frag = &c->fragment;
+ AVStream *st = NULL;
+ MOVStreamContext *sc;
+ MOVStts *ctts_data;
+ uint64_t offset;
+ int64_t dts;
+ int data_offset = 0;
+ unsigned entries, first_sample_flags = frag->flags;
+ int flags, distance, i, found_keyframe = 0;
+
+ for (i = 0; i < c->fc->nb_streams; i++) {
+ if (c->fc->streams[i]->id == frag->track_id) {
+ st = c->fc->streams[i];
+ break;
+ }
+ }
+ if (!st) {
+ av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
+ return AVERROR_INVALIDDATA;
+ }
+ sc = st->priv_data;
+ if (sc->pseudo_stream_id+1 != frag->stsd_id)
+ return 0;
+ avio_r8(pb); /* version */
+ flags = avio_rb24(pb);
+ entries = avio_rb32(pb);
+ av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
+
+ /* Always assume the presence of composition time offsets.
+ * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
+ * 1) in the initial movie, there are no samples.
+ * 2) in the first movie fragment, there is only one sample without composition time offset.
+ * 3) in the subsequent movie fragments, there are samples with composition time offset. */
+ if (!sc->ctts_count && sc->sample_count)
+ {
+ /* Complement ctts table if moov atom doesn't have ctts atom. */
+ ctts_data = av_malloc(sizeof(*sc->ctts_data));
+ if (!ctts_data)
+ return AVERROR(ENOMEM);
+ sc->ctts_data = ctts_data;
+ sc->ctts_data[sc->ctts_count].count = sc->sample_count;
+ sc->ctts_data[sc->ctts_count].duration = 0;
+ sc->ctts_count++;
+ }
+ if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
+ return AVERROR_INVALIDDATA;
+ ctts_data = av_realloc(sc->ctts_data,
+ (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
+ if (!ctts_data)
+ return AVERROR(ENOMEM);
+ sc->ctts_data = ctts_data;
+
+ if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
+ if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
+ dts = sc->track_end - sc->time_offset;
+ offset = frag->base_data_offset + data_offset;
+ distance = 0;
+ av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
+ for (i = 0; i < entries && !pb->eof_reached; i++) {
+ unsigned sample_size = frag->size;
+ int sample_flags = i ? frag->flags : first_sample_flags;
+ unsigned sample_duration = frag->duration;
+ int keyframe = 0;
+
+ if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
+ if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
+ if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
+ sc->ctts_data[sc->ctts_count].count = 1;
+ sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
+ avio_rb32(pb) : 0;
+ sc->ctts_count++;
+ if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ keyframe = 1;
+ else if (!found_keyframe)
+ keyframe = found_keyframe =
+ !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
+ MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
+ if (keyframe)
+ distance = 0;
+ av_add_index_entry(st, offset, dts, sample_size, distance,
+ keyframe ? AVINDEX_KEYFRAME : 0);
+ av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
+ "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
+ offset, dts, sample_size, distance, keyframe);
+ distance++;
+ dts += sample_duration;
+ offset += sample_size;
+ sc->data_size += sample_size;
+ }
+
+ if (pb->eof_reached)
+ return AVERROR_EOF;
+
+ frag->moof_offset = offset;
+ st->duration = sc->track_end = dts + sc->time_offset;
+ return 0;
+}
+
+/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
+/* like the files created with Adobe Premiere 5.0, for samples see */
+/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
+static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int err;
+
+ if (atom.size < 8)
+ return 0; /* continue */
+ if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
+ avio_skip(pb, atom.size - 4);
+ return 0;
+ }
+ atom.type = avio_rl32(pb);
+ atom.size -= 8;
+ if (atom.type != MKTAG('m','d','a','t')) {
+ avio_skip(pb, atom.size);
+ return 0;
+ }
+ err = mov_read_mdat(c, pb, atom);
+ return err;
+}
+
+static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+#if CONFIG_ZLIB
+ AVIOContext ctx;
+ uint8_t *cmov_data;
+ uint8_t *moov_data; /* uncompressed data */
+ long cmov_len, moov_len;
+ int ret = -1;
+
+ avio_rb32(pb); /* dcom atom */
+ if (avio_rl32(pb) != MKTAG('d','c','o','m'))
+ return AVERROR_INVALIDDATA;
+ if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
+ av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
+ return AVERROR_INVALIDDATA;
+ }
+ avio_rb32(pb); /* cmvd atom */
+ if (avio_rl32(pb) != MKTAG('c','m','v','d'))
+ return AVERROR_INVALIDDATA;
+ moov_len = avio_rb32(pb); /* uncompressed size */
+ cmov_len = atom.size - 6 * 4;
+
+ cmov_data = av_malloc(cmov_len);
+ if (!cmov_data)
+ return AVERROR(ENOMEM);
+ moov_data = av_malloc(moov_len);
+ if (!moov_data) {
+ av_free(cmov_data);
+ return AVERROR(ENOMEM);
+ }
+ avio_read(pb, cmov_data, cmov_len);
+ if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
+ goto free_and_return;
+ if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
+ goto free_and_return;
+ atom.type = MKTAG('m','o','o','v');
+ atom.size = moov_len;
+ ret = mov_read_default(c, &ctx, atom);
+free_and_return:
+ av_free(moov_data);
+ av_free(cmov_data);
+ return ret;
+#else
+ av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
+ return AVERROR(ENOSYS);
+#endif
+}
+
+/* edit list atom */
+static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ MOVStreamContext *sc;
+ int i, edit_count, version, edit_start_index = 0;
+ int unsupported = 0;
+
+ if (c->fc->nb_streams < 1 || c->ignore_editlist)
+ return 0;
+ sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
+
+ version = avio_r8(pb); /* version */
+ avio_rb24(pb); /* flags */
+ edit_count = avio_rb32(pb); /* entries */
+
+ if ((uint64_t)edit_count*12+8 > atom.size)
+ return AVERROR_INVALIDDATA;
+
+ av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
+ for (i=0; i<edit_count; i++){
+ int64_t time;
+ int64_t duration;
+ int rate;
+ if (version == 1) {
+ duration = avio_rb64(pb);
+ time = avio_rb64(pb);
+ } else {
+ duration = avio_rb32(pb); /* segment duration */
+ time = (int32_t)avio_rb32(pb); /* media time */
+ }
+ rate = avio_rb32(pb);
+ if (i == 0 && time == -1) {
+ sc->empty_duration = duration;
+ edit_start_index = 1;
+ } else if (i == edit_start_index && time >= 0)
+ sc->start_time = time;
+ else
+ unsupported = 1;
+
+ av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
+ duration, time, rate / 65536.0);
+ }
+
+ if (unsupported)
+ av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
+ "a/v desync might occur, patch welcome\n");
+
+ return 0;
+}
+
+static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ MOVStreamContext *sc;
+
+ if (c->fc->nb_streams < 1)
+ return AVERROR_INVALIDDATA;
+ sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
+ sc->timecode_track = avio_rb32(pb);
+ return 0;
+}
+
+static const MOVParseTableEntry mov_default_parse_table[] = {
+{ MKTAG('A','C','L','R'), mov_read_avid },
+{ MKTAG('A','P','R','G'), mov_read_avid },
+{ MKTAG('A','A','L','P'), mov_read_avid },
+{ MKTAG('A','R','E','S'), mov_read_avid },
+{ MKTAG('a','v','s','s'), mov_read_avss },
+{ MKTAG('c','h','p','l'), mov_read_chpl },
+{ MKTAG('c','o','6','4'), mov_read_stco },
+{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
+{ MKTAG('d','i','n','f'), mov_read_default },
+{ MKTAG('d','r','e','f'), mov_read_dref },
+{ MKTAG('e','d','t','s'), mov_read_default },
+{ MKTAG('e','l','s','t'), mov_read_elst },
+{ MKTAG('e','n','d','a'), mov_read_enda },
+{ MKTAG('f','i','e','l'), mov_read_fiel },
+{ MKTAG('f','t','y','p'), mov_read_ftyp },
+{ MKTAG('g','l','b','l'), mov_read_glbl },
+{ MKTAG('h','d','l','r'), mov_read_hdlr },
+{ MKTAG('i','l','s','t'), mov_read_ilst },
+{ MKTAG('j','p','2','h'), mov_read_jp2h },
+{ MKTAG('m','d','a','t'), mov_read_mdat },
+{ MKTAG('m','d','h','d'), mov_read_mdhd },
+{ MKTAG('m','d','i','a'), mov_read_default },
+{ MKTAG('m','e','t','a'), mov_read_meta },
+{ MKTAG('m','i','n','f'), mov_read_default },
+{ MKTAG('m','o','o','f'), mov_read_moof },
+{ MKTAG('m','o','o','v'), mov_read_moov },
+{ MKTAG('m','v','e','x'), mov_read_default },
+{ MKTAG('m','v','h','d'), mov_read_mvhd },
+{ MKTAG('S','M','I',' '), mov_read_svq3 },
+{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
+{ MKTAG('a','v','c','C'), mov_read_glbl },
+{ MKTAG('p','a','s','p'), mov_read_pasp },
+{ MKTAG('s','t','b','l'), mov_read_default },
+{ MKTAG('s','t','c','o'), mov_read_stco },
+{ MKTAG('s','t','p','s'), mov_read_stps },
+{ MKTAG('s','t','r','f'), mov_read_strf },
+{ MKTAG('s','t','s','c'), mov_read_stsc },
+{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
+{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
+{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
+{ MKTAG('s','t','t','s'), mov_read_stts },
+{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
+{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
+{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
+{ MKTAG('t','r','a','k'), mov_read_trak },
+{ MKTAG('t','r','a','f'), mov_read_default },
+{ MKTAG('t','r','e','f'), mov_read_default },
+{ MKTAG('t','m','c','d'), mov_read_tmcd },
+{ MKTAG('c','h','a','p'), mov_read_chap },
+{ MKTAG('t','r','e','x'), mov_read_trex },
+{ MKTAG('t','r','u','n'), mov_read_trun },
+{ MKTAG('u','d','t','a'), mov_read_default },
+{ MKTAG('w','a','v','e'), mov_read_wave },
+{ MKTAG('e','s','d','s'), mov_read_esds },
+{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
+{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
+{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
+{ MKTAG('w','f','e','x'), mov_read_wfex },
+{ MKTAG('c','m','o','v'), mov_read_cmov },
+{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
+{ MKTAG('d','v','c','1'), mov_read_dvc1 },
+{ MKTAG('s','b','g','p'), mov_read_sbgp },
+{ 0, NULL }
+};
+
+static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ int64_t total_size = 0;
+ MOVAtom a;
+ int i;
+
+ if (atom.size < 0)
+ atom.size = INT64_MAX;
+ while (total_size + 8 <= atom.size && !url_feof(pb)) {
+ int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
+ a.size = atom.size;
+ a.type=0;
+ if (atom.size >= 8) {
+ a.size = avio_rb32(pb);
+ a.type = avio_rl32(pb);
+ if (atom.type != MKTAG('r','o','o','t') &&
+ atom.type != MKTAG('m','o','o','v'))
+ {
+ if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
+ {
+ av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
+ avio_skip(pb, -8);
+ return 0;
+ }
+ }
+ total_size += 8;
+ if (a.size == 1) { /* 64 bit extended size */
+ a.size = avio_rb64(pb) - 8;
+ total_size += 8;
+ }
+ }
+ av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
+ a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
+ if (a.size == 0) {
+ a.size = atom.size - total_size + 8;
+ }
+ a.size -= 8;
+ if (a.size < 0)
+ break;
+ a.size = FFMIN(a.size, atom.size - total_size);
+
+ for (i = 0; mov_default_parse_table[i].type; i++)
+ if (mov_default_parse_table[i].type == a.type) {
+ parse = mov_default_parse_table[i].parse;
+ break;
+ }
+
+ // container is user data
+ if (!parse && (atom.type == MKTAG('u','d','t','a') ||
+ atom.type == MKTAG('i','l','s','t')))
+ parse = mov_read_udta_string;
+
+ if (!parse) { /* skip leaf atoms data */
+ avio_skip(pb, a.size);
+ } else {
+ int64_t start_pos = avio_tell(pb);
+ int64_t left;
+ int err = parse(c, pb, a);
+ if (err < 0)
+ return err;
+ if (c->found_moov && c->found_mdat &&
+ ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
+ start_pos + a.size == avio_size(pb))) {
+ if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
+ c->next_root_atom = start_pos + a.size;
+ return 0;
+ }
+ left = a.size - avio_tell(pb) + start_pos;
+ if (left > 0) /* skip garbage at atom end */
+ avio_skip(pb, left);
+ else if(left < 0) {
+ av_log(c->fc, AV_LOG_DEBUG, "undoing overread of %"PRId64" in '%.4s'\n", -left, (char*)&a.type);
+ avio_seek(pb, left, SEEK_CUR);
+ }
+ }
+
+ total_size += a.size;
+ }
+
+ if (total_size < atom.size && atom.size < 0x7ffff)
+ avio_skip(pb, atom.size - total_size);
+
+ return 0;
+}
+
+static int mov_probe(AVProbeData *p)
+{
+ int64_t offset;
+ uint32_t tag;
+ int score = 0;
+ int moov_offset = -1;
+
+ /* check file header */
+ offset = 0;
+ for (;;) {
+ /* ignore invalid offset */
+ if ((offset + 8) > (unsigned int)p->buf_size)
+ break;
+ tag = AV_RL32(p->buf + offset + 4);
+ switch(tag) {
+ /* check for obvious tags */
+ case MKTAG('m','o','o','v'):
+ moov_offset = offset + 4;
+ case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
+ case MKTAG('m','d','a','t'):
+ case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
+ case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
+ case MKTAG('f','t','y','p'):
+ if (AV_RB32(p->buf+offset) < 8 &&
+ (AV_RB32(p->buf+offset) != 1 ||
+ offset + 12 > (unsigned int)p->buf_size ||
+ AV_RB64(p->buf+offset + 8) == 0)) {
+ score = FFMAX(score, AVPROBE_SCORE_MAX - 50);
+ } else {
+ score = AVPROBE_SCORE_MAX;
+ }
+ offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
+ break;
+ /* those are more common words, so rate then a bit less */
+ case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
+ case MKTAG('w','i','d','e'):
+ case MKTAG('f','r','e','e'):
+ case MKTAG('j','u','n','k'):
+ case MKTAG('p','i','c','t'):
+ score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
+ offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
+ break;
+ case MKTAG(0x82,0x82,0x7f,0x7d):
+ case MKTAG('s','k','i','p'):
+ case MKTAG('u','u','i','d'):
+ case MKTAG('p','r','f','l'):
+ /* if we only find those cause probedata is too small at least rate them */
+ score = FFMAX(score, AVPROBE_SCORE_MAX - 50);
+ offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
+ break;
+ default:
+ offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
+ }
+ }
+ if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
+ /* moov atom in the header - we should make sure that this is not a
+ * MOV-packed MPEG-PS */
+ offset = moov_offset;
+
+ while(offset < (p->buf_size - 16)){ /* Sufficient space */
+ /* We found an actual hdlr atom */
+ if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
+ AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
+ AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
+ av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
+ /* We found a media handler reference atom describing an
+ * MPEG-PS-in-MOV, return a
+ * low score to force expanding the probe window until
+ * mpegps_probe finds what it needs */
+ return 5;
+ }else
+ /* Keep looking */
+ offset+=2;
+ }
+ }
+
+ return score;
+}
+
+// must be done after parsing all trak because there's no order requirement
+static void mov_read_chapters(AVFormatContext *s)
+{
+ MOVContext *mov = s->priv_data;
+ AVStream *st = NULL;
+ MOVStreamContext *sc;
+ int64_t cur_pos;
+ int i;
+
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->id == mov->chapter_track) {
+ st = s->streams[i];
+ break;
+ }
+ if (!st) {
+ av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
+ return;
+ }
+
+ st->discard = AVDISCARD_ALL;
+ sc = st->priv_data;
+ cur_pos = avio_tell(sc->pb);
+
+ for (i = 0; i < st->nb_index_entries; i++) {
+ AVIndexEntry *sample = &st->index_entries[i];
+ int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
+ uint8_t *title;
+ uint16_t ch;
+ int len, title_len;
+
+ if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
+ av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
+ goto finish;
+ }
+
+ // the first two bytes are the length of the title
+ len = avio_rb16(sc->pb);
+ if (len > sample->size-2)
+ continue;
+ title_len = 2*len + 1;
+ if (!(title = av_mallocz(title_len)))
+ goto finish;
+
+ // The samples could theoretically be in any encoding if there's an encd
+ // atom following, but in practice are only utf-8 or utf-16, distinguished
+ // instead by the presence of a BOM
+ if (!len) {
+ title[0] = 0;
+ } else {
+ ch = avio_rb16(sc->pb);
+ if (ch == 0xfeff)
+ avio_get_str16be(sc->pb, len, title, title_len);
+ else if (ch == 0xfffe)
+ avio_get_str16le(sc->pb, len, title, title_len);
+ else {
+ AV_WB16(title, ch);
+ if (len == 1 || len == 2)
+ title[len] = 0;
+ else
+ avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
+ }
+ }
+
+ avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
+ av_freep(&title);
+ }
+finish:
+ avio_seek(sc->pb, cur_pos, SEEK_SET);
+}
+
+static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
+ uint32_t value, int flags)
+{
+ AVTimecode tc;
+ char buf[AV_TIMECODE_STR_SIZE];
+ AVRational rate = {st->codec->time_base.den,
+ st->codec->time_base.num};
+ int ret = av_timecode_init(&tc, rate, flags, 0, s);
+ if (ret < 0)
+ return ret;
+ av_dict_set(&st->metadata, "timecode",
+ av_timecode_make_string(&tc, buf, value), 0);
+ return 0;
+}
+
+static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
+{
+ MOVStreamContext *sc = st->priv_data;
+ int flags = 0;
+ int64_t cur_pos = avio_tell(sc->pb);
+ uint32_t value;
+
+ if (!st->nb_index_entries)
+ return -1;
+
+ avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
+ value = avio_rb32(s->pb);
+
+ if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
+ if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
+ if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
+
+ /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
+ * not the case) and thus assume "frame number format" instead of QT one.
+ * No sample with tmcd track can be found with a QT timecode at the moment,
+ * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
+ * format). */
+ parse_timecode_in_framenum_format(s, st, value, flags);
+
+ avio_seek(sc->pb, cur_pos, SEEK_SET);
+ return 0;
+}
+
+static int mov_read_close(AVFormatContext *s)
+{
+ MOVContext *mov = s->priv_data;
+ int i, j;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *sc = st->priv_data;
+
+ av_freep(&sc->ctts_data);
+ for (j = 0; j < sc->drefs_count; j++) {
+ av_freep(&sc->drefs[j].path);
+ av_freep(&sc->drefs[j].dir);
+ }
+ av_freep(&sc->drefs);
+ if (!sc->pb_is_copied)
+ avio_close(sc->pb);
+ sc->pb = NULL;
+ av_freep(&sc->chunk_offsets);
+ av_freep(&sc->keyframes);
+ av_freep(&sc->sample_sizes);
+ av_freep(&sc->stps_data);
+ av_freep(&sc->stsc_data);
+ av_freep(&sc->stts_data);
+ }
+
+ if (mov->dv_demux) {
+ for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
+ av_freep(&mov->dv_fctx->streams[i]->codec);
+ av_freep(&mov->dv_fctx->streams[i]);
+ }
+ av_freep(&mov->dv_fctx);
+ av_freep(&mov->dv_demux);
+ }
+
+ av_freep(&mov->trex_data);
+
+ return 0;
+}
+
+static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
+{
+ int i;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *sc = st->priv_data;
+
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
+ sc->timecode_track == tmcd_id)
+ return 1;
+ }
+ return 0;
+}
+
+/* look for a tmcd track not referenced by any video track, and export it globally */
+static void export_orphan_timecode(AVFormatContext *s)
+{
+ int i;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+
+ if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
+ !tmcd_is_referenced(s, i + 1)) {
+ AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
+ if (tcr) {
+ av_dict_set(&s->metadata, "timecode", tcr->value, 0);
+ break;
+ }
+ }
+ }
+}
+
+static int mov_read_header(AVFormatContext *s)
+{
+ MOVContext *mov = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int i, j, err;
+ MOVAtom atom = { AV_RL32("root") };
+
+ mov->fc = s;
+ /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
+ if (pb->seekable)
+ atom.size = avio_size(pb);
+ else
+ atom.size = INT64_MAX;
+
+ /* check MOV header */
+ if ((err = mov_read_default(mov, pb, atom)) < 0) {
+ av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
+ mov_read_close(s);
+ return err;
+ }
+ if (!mov->found_moov) {
+ av_log(s, AV_LOG_ERROR, "moov atom not found\n");
+ mov_read_close(s);
+ return AVERROR_INVALIDDATA;
+ }
+ av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
+
+ if (pb->seekable) {
+ if (mov->chapter_track > 0)
+ mov_read_chapters(s);
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
+ mov_read_timecode_track(s, s->streams[i]);
+ }
+
+ /* copy timecode metadata from tmcd tracks to the related video streams */
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *sc = st->priv_data;
+ if (sc->timecode_track > 0) {
+ AVDictionaryEntry *tcr;
+ int tmcd_st_id = -1;
+
+ for (j = 0; j < s->nb_streams; j++)
+ if (s->streams[j]->id == sc->timecode_track)
+ tmcd_st_id = j;
+
+ if (tmcd_st_id < 0 || tmcd_st_id == i)
+ continue;
+ tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
+ if (tcr)
+ av_dict_set(&st->metadata, "timecode", tcr->value, 0);
+ }
+ }
+ export_orphan_timecode(s);
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *sc = st->priv_data;
+ fix_timescale(mov, sc);
+ if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
+ st->skip_samples = sc->start_pad;
+ }
+ }
+
+ if (mov->trex_data) {
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *sc = st->priv_data;
+ if (st->duration)
+ st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
+ }
+ }
+
+ return 0;
+}
+
+static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
+{
+ AVIndexEntry *sample = NULL;
+ int64_t best_dts = INT64_MAX;
+ int i;
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *avst = s->streams[i];
+ MOVStreamContext *msc = avst->priv_data;
+ if (msc->pb && msc->current_sample < avst->nb_index_entries) {
+ AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
+ int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
+ av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
+ if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
+ (s->pb->seekable &&
+ ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
+ ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
+ (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
+ sample = current_sample;
+ best_dts = dts;
+ *st = avst;
+ }
+ }
+ }
+ return sample;
+}
+
+static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ MOVContext *mov = s->priv_data;
+ MOVStreamContext *sc;
+ AVIndexEntry *sample;
+ AVStream *st = NULL;
+ int ret;
+ mov->fc = s;
+ retry:
+ sample = mov_find_next_sample(s, &st);
+ if (!sample) {
+ mov->found_mdat = 0;
+ if (!mov->next_root_atom)
+ return AVERROR_EOF;
+ avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
+ mov->next_root_atom = 0;
+ if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
+ url_feof(s->pb))
+ return AVERROR_EOF;
+ av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
+ goto retry;
+ }
+ sc = st->priv_data;
+ /* must be done just before reading, to avoid infinite loop on sample */
+ sc->current_sample++;
+
+ if (st->discard != AVDISCARD_ALL) {
+ if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
+ av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
+ sc->ffindex, sample->pos);
+ return AVERROR_INVALIDDATA;
+ }
+ ret = av_get_packet(sc->pb, pkt, sample->size);
+ if (ret < 0)
+ return ret;
+ if (sc->has_palette) {
+ uint8_t *pal;
+
+ pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
+ if (!pal) {
+ av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
+ } else {
+ memcpy(pal, sc->palette, AVPALETTE_SIZE);
+ sc->has_palette = 0;
+ }
+ }
+#if CONFIG_DV_DEMUXER
+ if (mov->dv_demux && sc->dv_audio_container) {
+ avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
+ av_free(pkt->data);
+ pkt->size = 0;
+ ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
+ if (ret < 0)
+ return ret;
+ }
+#endif
+ }
+
+ pkt->stream_index = sc->ffindex;
+ pkt->dts = sample->timestamp;
+ if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
+ pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
+ /* update ctts context */
+ sc->ctts_sample++;
+ if (sc->ctts_index < sc->ctts_count &&
+ sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
+ sc->ctts_index++;
+ sc->ctts_sample = 0;
+ }
+ if (sc->wrong_dts)
+ pkt->dts = AV_NOPTS_VALUE;
+ } else {
+ int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
+ st->index_entries[sc->current_sample].timestamp : st->duration;
+ pkt->duration = next_dts - pkt->dts;
+ pkt->pts = pkt->dts;
+ }
+ if (st->discard == AVDISCARD_ALL)
+ goto retry;
+ pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
+ pkt->pos = sample->pos;
+ av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
+ pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
+ return 0;
+}
+
+static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
+{
+ MOVStreamContext *sc = st->priv_data;
+ int sample, time_sample;
+ int i;
+
+ sample = av_index_search_timestamp(st, timestamp, flags);
+ av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
+ if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
+ sample = 0;
+ if (sample < 0) /* not sure what to do */
+ return AVERROR_INVALIDDATA;
+ sc->current_sample = sample;
+ av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
+ /* adjust ctts index */
+ if (sc->ctts_data) {
+ time_sample = 0;
+ for (i = 0; i < sc->ctts_count; i++) {
+ int next = time_sample + sc->ctts_data[i].count;
+ if (next > sc->current_sample) {
+ sc->ctts_index = i;
+ sc->ctts_sample = sc->current_sample - time_sample;
+ break;
+ }
+ time_sample = next;
+ }
+ }
+ return sample;
+}
+
+static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
+{
+ AVStream *st;
+ int64_t seek_timestamp, timestamp;
+ int sample;
+ int i;
+
+ if (stream_index >= s->nb_streams)
+ return AVERROR_INVALIDDATA;
+
+ st = s->streams[stream_index];
+ sample = mov_seek_stream(s, st, sample_time, flags);
+ if (sample < 0)
+ return sample;
+
+ /* adjust seek timestamp to found sample timestamp */
+ seek_timestamp = st->index_entries[sample].timestamp;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ MOVStreamContext *sc = s->streams[i]->priv_data;
+ st = s->streams[i];
+ st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
+
+ if (stream_index == i)
+ continue;
+
+ timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
+ mov_seek_stream(s, st, timestamp, flags);
+ }
+ return 0;
+}
+
+static const AVOption options[] = {
+ {"use_absolute_path",
+ "allow using absolute path when opening alias, this is a possible security issue",
+ offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
+ 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
+ {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
+ 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
+ {NULL}
+};
+
+static const AVClass class = {
+ .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+AVInputFormat ff_mov_demuxer = {
+ .name = "mov,mp4,m4a,3gp,3g2,mj2",
+ .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
+ .priv_data_size = sizeof(MOVContext),
+ .read_probe = mov_probe,
+ .read_header = mov_read_header,
+ .read_packet = mov_read_packet,
+ .read_close = mov_read_close,
+ .read_seek = mov_read_seek,
+ .priv_class = &class,
+ .flags = AVFMT_NO_BYTE_SEEK,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 17:17:21 +0000