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-rw-r--r--contrib/ffmpeg/libavformat/mov.c1741
1 files changed, 1741 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavformat/mov.c b/contrib/ffmpeg/libavformat/mov.c
new file mode 100644
index 000000000..a67604b0e
--- /dev/null
+++ b/contrib/ffmpeg/libavformat/mov.c
@@ -0,0 +1,1741 @@
+/*
+ * MOV demuxer
+ * Copyright (c) 2001 Fabrice Bellard.
+ *
+ * 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
+
+#include "avformat.h"
+#include "riff.h"
+#include "isom.h"
+#include "dv.h"
+
+#ifdef CONFIG_ZLIB
+#include <zlib.h>
+#endif
+
+/*
+ * First version by Francois Revol revol@free.fr
+ * Seek function by Gael Chardon gael.dev@4now.net
+ *
+ * Features and limitations:
+ * - reads most of the QT files I have (at least the structure),
+ * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
+ * - the code is quite ugly... maybe I won't do it recursive next time :-)
+ *
+ * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
+ * when coding this :) (it's a writer anyway)
+ *
+ * Reference documents:
+ * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
+ * Apple:
+ * http://developer.apple.com/documentation/QuickTime/QTFF/
+ * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
+ * QuickTime is a trademark of Apple (AFAIK :))
+ */
+
+#include "qtpalette.h"
+
+
+#undef NDEBUG
+#include <assert.h>
+
+/* the QuickTime file format is quite convoluted...
+ * it has lots of index tables, each indexing something in another one...
+ * Here we just use what is needed to read the chunks
+ */
+
+typedef struct {
+ int first;
+ int count;
+ int id;
+} MOV_stsc_t;
+
+typedef struct {
+ uint32_t type;
+ char *path;
+} MOV_dref_t;
+
+typedef struct {
+ uint32_t type;
+ int64_t offset;
+ int64_t size; /* total size (excluding the size and type fields) */
+} MOV_atom_t;
+
+struct MOVParseTableEntry;
+
+typedef struct MOVStreamContext {
+ ByteIOContext *pb;
+ int ffindex; /* the ffmpeg stream id */
+ int next_chunk;
+ unsigned int chunk_count;
+ int64_t *chunk_offsets;
+ unsigned int stts_count;
+ MOV_stts_t *stts_data;
+ unsigned int ctts_count;
+ MOV_stts_t *ctts_data;
+ unsigned int edit_count; /* number of 'edit' (elst atom) */
+ unsigned int sample_to_chunk_sz;
+ MOV_stsc_t *sample_to_chunk;
+ int sample_to_ctime_index;
+ int sample_to_ctime_sample;
+ unsigned int sample_size;
+ unsigned int sample_count;
+ int *sample_sizes;
+ unsigned int keyframe_count;
+ int *keyframes;
+ int time_scale;
+ int time_rate;
+ int current_sample;
+ unsigned int bytes_per_frame;
+ unsigned int samples_per_frame;
+ int dv_audio_container;
+ int pseudo_stream_id;
+ int16_t audio_cid; ///< stsd audio compression id
+ unsigned drefs_count;
+ MOV_dref_t *drefs;
+ int dref_id;
+} MOVStreamContext;
+
+typedef struct MOVContext {
+ AVFormatContext *fc;
+ int time_scale;
+ int64_t duration; /* duration of the longest track */
+ int found_moov; /* when both 'moov' and 'mdat' sections has been found */
+ int found_mdat; /* we suppose we have enough data to read the file */
+ AVPaletteControl palette_control;
+ DVDemuxContext *dv_demux;
+ AVFormatContext *dv_fctx;
+ int isom; /* 1 if file is ISO Media (mp4/3gp) */
+} MOVContext;
+
+
+/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
+
+/* those functions parse an atom */
+/* return code:
+ 1: found what I wanted, exit
+ 0: continue to parse next atom
+ -1: error occured, exit
+ */
+/* links atom IDs to parse functions */
+typedef struct MOVParseTableEntry {
+ uint32_t type;
+ int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
+} MOVParseTableEntry;
+
+static const MOVParseTableEntry mov_default_parse_table[];
+
+static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ int64_t total_size = 0;
+ MOV_atom_t a;
+ int i;
+ int err = 0;
+
+ a.offset = atom.offset;
+
+ if (atom.size < 0)
+ atom.size = INT64_MAX;
+ while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
+ a.size = atom.size;
+ a.type=0;
+ if(atom.size >= 8) {
+ a.size = get_be32(pb);
+ a.type = get_le32(pb);
+ }
+ total_size += 8;
+ a.offset += 8;
+ dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
+ a.type, (char*)&a.type, a.size, atom.size, total_size);
+ if (a.size == 1) { /* 64 bit extended size */
+ a.size = get_be64(pb) - 8;
+ a.offset += 8;
+ total_size += 8;
+ }
+ if (a.size == 0) {
+ a.size = atom.size - total_size;
+ if (a.size <= 8)
+ break;
+ }
+ 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 != 0
+ && mov_default_parse_table[i].type != a.type; i++)
+ /* empty */;
+
+ if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
+ url_fskip(pb, a.size);
+ } else {
+ offset_t start_pos = url_ftell(pb);
+ int64_t left;
+ err = mov_default_parse_table[i].parse(c, pb, a);
+ if (c->found_moov && c->found_mdat)
+ break;
+ left = a.size - url_ftell(pb) + start_pos;
+ if (left > 0) /* skip garbage at atom end */
+ url_fskip(pb, left);
+ }
+
+ a.offset += a.size;
+ total_size += a.size;
+ }
+
+ if (!err && total_size < atom.size && atom.size < 0x7ffff) {
+ url_fskip(pb, atom.size - total_size);
+ }
+
+ return err;
+}
+
+static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ int entries, i, j;
+
+ get_be32(pb); // version + flags
+ entries = get_be32(pb);
+ if (entries >= UINT_MAX / sizeof(*sc->drefs))
+ return -1;
+ sc->drefs_count = entries;
+ sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
+
+ for (i = 0; i < sc->drefs_count; i++) {
+ MOV_dref_t *dref = &sc->drefs[i];
+ uint32_t size = get_be32(pb);
+ offset_t next = url_ftell(pb) + size - 4;
+
+ dref->type = get_le32(pb);
+ get_be32(pb); // version + flags
+ dprintf(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;
+ char volume[28];
+ int16_t type;
+
+ url_fskip(pb, 10);
+
+ volume_len = get_byte(pb);
+ volume_len = FFMIN(volume_len, 27);
+ get_buffer(pb, volume, 27);
+ volume[volume_len] = 0;
+ av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
+
+ url_fskip(pb, 112);
+
+ for (type = 0; type != -1 && url_ftell(pb) < next; ) {
+ type = get_be16(pb);
+ len = get_be16(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);
+ get_buffer(pb, dref->path, len);
+ if (len > volume_len && !strncmp(dref->path, 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
+ url_fskip(pb, len);
+ }
+ }
+ url_fseek(pb, next, SEEK_SET);
+ }
+ return 0;
+}
+
+static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ uint32_t type;
+ uint32_t ctype;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ /* component type */
+ ctype = get_le32(pb);
+ type = get_le32(pb); /* component subtype */
+
+ dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
+ ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
+ dprintf(c->fc, "stype= %c%c%c%c\n",
+ *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
+ if(!ctype)
+ c->isom = 1;
+ if(type == MKTAG('v', 'i', 'd', 'e'))
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ else if(type == MKTAG('s', 'o', 'u', 'n'))
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ else if(type == MKTAG('m', '1', 'a', ' '))
+ st->codec->codec_id = CODEC_ID_MP2;
+ else if(type == MKTAG('s', 'u', 'b', 'p')) {
+ st->codec->codec_type = CODEC_TYPE_SUBTITLE;
+ }
+ get_be32(pb); /* component manufacture */
+ get_be32(pb); /* component flags */
+ get_be32(pb); /* component flags mask */
+
+ if(atom.size <= 24)
+ return 0; /* nothing left to read */
+
+ url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
+ return 0;
+}
+
+static int mp4_read_descr_len(ByteIOContext *pb)
+{
+ int len = 0;
+ int count = 4;
+ while (count--) {
+ int c = get_byte(pb);
+ len = (len << 7) | (c & 0x7f);
+ if (!(c & 0x80))
+ break;
+ }
+ return len;
+}
+
+static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
+{
+ int len;
+ *tag = get_byte(pb);
+ len = mp4_read_descr_len(pb);
+ dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
+ return len;
+}
+
+#define MP4ESDescrTag 0x03
+#define MP4DecConfigDescrTag 0x04
+#define MP4DecSpecificDescrTag 0x05
+
+static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ int tag, len;
+
+ get_be32(pb); /* version + flags */
+ len = mp4_read_descr(c, pb, &tag);
+ if (tag == MP4ESDescrTag) {
+ get_be16(pb); /* ID */
+ get_byte(pb); /* priority */
+ } else
+ get_be16(pb); /* ID */
+
+ len = mp4_read_descr(c, pb, &tag);
+ if (tag == MP4DecConfigDescrTag) {
+ int object_type_id = get_byte(pb);
+ get_byte(pb); /* stream type */
+ get_be24(pb); /* buffer size db */
+ get_be32(pb); /* max bitrate */
+ get_be32(pb); /* avg bitrate */
+
+ st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
+ dprintf(c->fc, "esds object type id %d\n", object_type_id);
+ len = mp4_read_descr(c, pb, &tag);
+ if (tag == MP4DecSpecificDescrTag) {
+ dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
+ if((uint64_t)len > (1<<30))
+ return -1;
+ st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ get_buffer(pb, st->codec->extradata, len);
+ st->codec->extradata_size = len;
+ /* from mplayer */
+ if ((*st->codec->extradata >> 3) == 29) {
+ st->codec->codec_id = CODEC_ID_MP3ON4;
+ }
+ }
+ }
+ return 0;
+}
+
+/* this atom contains actual media data */
+static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ if(atom.size == 0) /* wrong one (MP4) */
+ return 0;
+ c->found_mdat=1;
+ if(c->found_moov)
+ return 1; /* found both, just go */
+ url_fskip(pb, atom.size);
+ return 0; /* now go for moov */
+}
+
+static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ uint32_t type = get_le32(pb);
+
+ if (type != MKTAG('q','t',' ',' '))
+ c->isom = 1;
+ av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
+ get_be32(pb); /* minor version */
+ url_fskip(pb, atom.size - 8);
+ return 0;
+}
+
+/* this atom should contain all header atoms */
+static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ if (mov_read_default(c, pb, atom) < 0)
+ return -1;
+ /* 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;
+ if(c->found_mdat)
+ return 1; /* found both, just go */
+ return 0; /* now go for mdat */
+}
+
+
+static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ int version = get_byte(pb);
+ int lang;
+
+ if (version > 1)
+ return 1; /* unsupported */
+
+ get_byte(pb); get_byte(pb);
+ get_byte(pb); /* flags */
+
+ if (version == 1) {
+ get_be64(pb);
+ get_be64(pb);
+ } else {
+ get_be32(pb); /* creation time */
+ get_be32(pb); /* modification time */
+ }
+
+ sc->time_scale = get_be32(pb);
+ st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
+
+ lang = get_be16(pb); /* language */
+ ff_mov_lang_to_iso639(lang, st->language);
+ get_be16(pb); /* quality */
+
+ return 0;
+}
+
+static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ int version = get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ if (version == 1) {
+ get_be64(pb);
+ get_be64(pb);
+ } else {
+ get_be32(pb); /* creation time */
+ get_be32(pb); /* modification time */
+ }
+ c->time_scale = get_be32(pb); /* time scale */
+
+ dprintf(c->fc, "time scale = %i\n", c->time_scale);
+
+ c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
+ get_be32(pb); /* preferred scale */
+
+ get_be16(pb); /* preferred volume */
+
+ url_fskip(pb, 10); /* reserved */
+
+ url_fskip(pb, 36); /* display matrix */
+
+ get_be32(pb); /* preview time */
+ get_be32(pb); /* preview duration */
+ get_be32(pb); /* poster time */
+ get_be32(pb); /* selection time */
+ get_be32(pb); /* selection duration */
+ get_be32(pb); /* current time */
+ get_be32(pb); /* next track ID */
+
+ return 0;
+}
+
+static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+
+ if((uint64_t)atom.size > (1<<30))
+ return -1;
+
+ // currently SVQ3 decoder expect full STSD header - so let's fake it
+ // this should be fixed and just SMI header should be passed
+ av_free(st->codec->extradata);
+ st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = 0x5a + atom.size;
+ memcpy(st->codec->extradata, "SVQ3", 4); // fake
+ get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
+ dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
+ return 0;
+}
+
+static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ int little_endian = get_be16(pb);
+
+ if (little_endian) {
+ switch (st->codec->codec_id) {
+ case CODEC_ID_PCM_S24BE:
+ st->codec->codec_id = CODEC_ID_PCM_S24LE;
+ break;
+ case CODEC_ID_PCM_S32BE:
+ st->codec->codec_id = CODEC_ID_PCM_S32LE;
+ break;
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
+static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
+ uint8_t *buf;
+ if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
+ return -1;
+ buf= av_realloc(st->codec->extradata, size);
+ if(!buf)
+ return -1;
+ 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);
+ get_buffer(pb, buf + 8, atom.size);
+ return 0;
+}
+
+static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+
+ if((uint64_t)atom.size > (1<<30))
+ return -1;
+
+ if (st->codec->codec_id == CODEC_ID_QDM2) {
+ // pass all frma atom to codec, needed at least for QDM2
+ av_free(st->codec->extradata);
+ st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = atom.size;
+ get_buffer(pb, st->codec->extradata, atom.size);
+ } else if (atom.size > 8) { /* to read frma, esds atoms */
+ if (mov_read_default(c, pb, atom) < 0)
+ return -1;
+ } else
+ url_fskip(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, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+
+ if((uint64_t)atom.size > (1<<30))
+ return -1;
+
+ av_free(st->codec->extradata);
+ st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata_size = atom.size;
+ get_buffer(pb, st->codec->extradata, atom.size);
+ return 0;
+}
+
+static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ unsigned int i, entries;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ entries = get_be32(pb);
+
+ if(entries >= UINT_MAX/sizeof(int64_t))
+ return -1;
+
+ sc->chunk_count = entries;
+ sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
+ if (!sc->chunk_offsets)
+ return -1;
+ if (atom.type == MKTAG('s', 't', 'c', 'o')) {
+ for(i=0; i<entries; i++) {
+ sc->chunk_offsets[i] = get_be32(pb);
+ }
+ } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
+ for(i=0; i<entries; i++) {
+ sc->chunk_offsets[i] = get_be64(pb);
+ }
+ } else
+ return -1;
+
+ return 0;
+}
+
+static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ int entries, frames_per_sample;
+ uint32_t format;
+ uint8_t codec_name[32];
+
+ /* for palette traversal */
+ unsigned int color_depth;
+ unsigned int color_start;
+ unsigned int color_count;
+ unsigned int color_end;
+ int color_index;
+ int color_dec;
+ int color_greyscale;
+ const uint8_t *color_table;
+ int j, pseudo_stream_id;
+ unsigned char r, g, b;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ entries = get_be32(pb);
+
+ for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
+ enum CodecID id;
+ int dref_id;
+ MOV_atom_t a = { 0, 0, 0 };
+ offset_t start_pos = url_ftell(pb);
+ int size = get_be32(pb); /* size */
+ format = get_le32(pb); /* data format */
+
+ get_be32(pb); /* reserved */
+ get_be16(pb); /* reserved */
+ dref_id = get_be16(pb);
+
+ if (st->codec->codec_tag &&
+ (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
+ : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
+ ){
+ /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
+ seperate AVStream but this needs a few changes in the mov demuxer, patch
+ welcome */
+ url_fskip(pb, size - (url_ftell(pb) - start_pos));
+ continue;
+ }
+ sc->pseudo_stream_id= pseudo_stream_id;
+ sc->dref_id= dref_id;
+
+ st->codec->codec_tag = format;
+ id = codec_get_id(codec_movaudio_tags, format);
+ if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
+ id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
+
+ if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
+ format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
+ id = codec_get_id(codec_movvideo_tags, format);
+ if (id <= 0)
+ id = codec_get_id(codec_bmp_tags, format);
+ if (id > 0)
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ else if(st->codec->codec_type == CODEC_TYPE_DATA){
+ id = codec_get_id(ff_codec_movsubtitle_tags, format);
+ if(id > 0)
+ st->codec->codec_type = CODEC_TYPE_SUBTITLE;
+ }
+ }
+
+ dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
+ (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
+ (format >> 24) & 0xff, st->codec->codec_type);
+
+ if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
+ st->codec->codec_id = id;
+ get_be16(pb); /* version */
+ get_be16(pb); /* revision level */
+ get_be32(pb); /* vendor */
+ get_be32(pb); /* temporal quality */
+ get_be32(pb); /* spatial quality */
+
+ st->codec->width = get_be16(pb); /* width */
+ st->codec->height = get_be16(pb); /* height */
+
+ get_be32(pb); /* horiz resolution */
+ get_be32(pb); /* vert resolution */
+ get_be32(pb); /* data size, always 0 */
+ frames_per_sample = get_be16(pb); /* frames per samples */
+
+ dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
+
+ get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
+ if (codec_name[0] <= 31) {
+ memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
+ st->codec->codec_name[codec_name[0]] = 0;
+ }
+
+ st->codec->bits_per_sample = get_be16(pb); /* depth */
+ st->codec->color_table_id = get_be16(pb); /* colortable id */
+ dprintf(c->fc, "depth %d, ctab id %d\n",
+ st->codec->bits_per_sample, st->codec->color_table_id);
+ /* figure out the palette situation */
+ color_depth = st->codec->bits_per_sample & 0x1F;
+ color_greyscale = st->codec->bits_per_sample & 0x20;
+
+ /* if the depth is 2, 4, or 8 bpp, file is palettized */
+ if ((color_depth == 2) || (color_depth == 4) ||
+ (color_depth == 8)) {
+ if (color_greyscale) {
+ /* compute the greyscale palette */
+ st->codec->bits_per_sample = color_depth;
+ color_count = 1 << color_depth;
+ color_index = 255;
+ color_dec = 256 / (color_count - 1);
+ for (j = 0; j < color_count; j++) {
+ r = g = b = color_index;
+ c->palette_control.palette[j] =
+ (r << 16) | (g << 8) | (b);
+ color_index -= color_dec;
+ if (color_index < 0)
+ color_index = 0;
+ }
+ } else if (st->codec->color_table_id & 0x08) {
+ /* 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 * 4 + 0];
+ g = color_table[j * 4 + 1];
+ b = color_table[j * 4 + 2];
+ c->palette_control.palette[j] =
+ (r << 16) | (g << 8) | (b);
+ }
+ } else {
+ /* load the palette from the file */
+ color_start = get_be32(pb);
+ color_count = get_be16(pb);
+ color_end = get_be16(pb);
+ if ((color_start <= 255) &&
+ (color_end <= 255)) {
+ for (j = color_start; j <= color_end; j++) {
+ /* each R, G, or B component is 16 bits;
+ * only use the top 8 bits; skip alpha bytes
+ * up front */
+ get_byte(pb);
+ get_byte(pb);
+ r = get_byte(pb);
+ get_byte(pb);
+ g = get_byte(pb);
+ get_byte(pb);
+ b = get_byte(pb);
+ get_byte(pb);
+ c->palette_control.palette[j] =
+ (r << 16) | (g << 8) | (b);
+ }
+ }
+ }
+ st->codec->palctrl = &c->palette_control;
+ st->codec->palctrl->palette_changed = 1;
+ } else
+ st->codec->palctrl = NULL;
+ } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
+ int bits_per_sample;
+ uint16_t version = get_be16(pb);
+
+ st->codec->codec_id = id;
+ get_be16(pb); /* revision level */
+ get_be32(pb); /* vendor */
+
+ st->codec->channels = get_be16(pb); /* channel count */
+ dprintf(c->fc, "audio channels %d\n", st->codec->channels);
+ st->codec->bits_per_sample = get_be16(pb); /* sample size */
+
+ sc->audio_cid = get_be16(pb);
+ get_be16(pb); /* packet size = 0 */
+
+ st->codec->sample_rate = ((get_be32(pb) >> 16));
+
+ switch (st->codec->codec_id) {
+ case CODEC_ID_PCM_S8:
+ case CODEC_ID_PCM_U8:
+ if (st->codec->bits_per_sample == 16)
+ st->codec->codec_id = CODEC_ID_PCM_S16BE;
+ break;
+ case CODEC_ID_PCM_S16LE:
+ case CODEC_ID_PCM_S16BE:
+ if (st->codec->bits_per_sample == 8)
+ st->codec->codec_id = CODEC_ID_PCM_S8;
+ else if (st->codec->bits_per_sample == 24)
+ st->codec->codec_id = CODEC_ID_PCM_S24BE;
+ break;
+ /* set values for old format before stsd version 1 appeared */
+ case CODEC_ID_MACE3:
+ sc->samples_per_frame = 6;
+ sc->bytes_per_frame = 2*st->codec->channels;
+ break;
+ case CODEC_ID_MACE6:
+ sc->samples_per_frame = 6;
+ sc->bytes_per_frame = 1*st->codec->channels;
+ break;
+ case CODEC_ID_ADPCM_IMA_QT:
+ sc->samples_per_frame = 64;
+ sc->bytes_per_frame = 34*st->codec->channels;
+ break;
+ default:
+ break;
+ }
+
+ //Read QT version 1 fields. In version 0 these do not exist.
+ dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
+ if(!c->isom) {
+ if(version==1) {
+ sc->samples_per_frame = get_be32(pb);
+ get_be32(pb); /* bytes per packet */
+ sc->bytes_per_frame = get_be32(pb);
+ get_be32(pb); /* bytes per sample */
+ } else if(version==2) {
+ get_be32(pb); /* sizeof struct only */
+ st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
+ st->codec->channels = get_be32(pb);
+ get_be32(pb); /* always 0x7F000000 */
+ get_be32(pb); /* bits per channel if sound is uncompressed */
+ get_be32(pb); /* lcpm format specific flag */
+ get_be32(pb); /* bytes per audio packet if constant */
+ get_be32(pb); /* lpcm frames per audio packet if constant */
+ }
+ }
+
+ bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
+ if (bits_per_sample) {
+ st->codec->bits_per_sample = bits_per_sample;
+ sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
+ }
+ } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
+ st->codec->codec_id= id;
+ } else {
+ /* other codec type, just skip (rtp, mp4s, tmcd ...) */
+ url_fskip(pb, size - (url_ftell(pb) - start_pos));
+ }
+ /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
+ a.size = size - (url_ftell(pb) - start_pos);
+ if (a.size > 8) {
+ if (mov_read_default(c, pb, a) < 0)
+ return -1;
+ } else if (a.size > 0)
+ url_fskip(pb, a.size);
+ }
+
+ if(st->codec->codec_type==CODEC_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) {
+#ifdef CONFIG_DV_DEMUXER
+ case CODEC_ID_DVAUDIO:
+ c->dv_fctx = av_alloc_format_context();
+ c->dv_demux = dv_init_demux(c->dv_fctx);
+ if (!c->dv_demux) {
+ av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
+ return -1;
+ }
+ sc->dv_audio_container = 1;
+ st->codec->codec_id = CODEC_ID_PCM_S16LE;
+ break;
+#endif
+ /* no ifdef since parameters are always those */
+ case CODEC_ID_AMR_WB:
+ st->codec->sample_rate= 16000;
+ st->codec->channels= 1; /* really needed */
+ break;
+ case CODEC_ID_AMR_NB:
+ st->codec->sample_rate= 8000;
+ st->codec->channels= 1; /* really needed */
+ break;
+ case CODEC_ID_MP2:
+ case CODEC_ID_MP3:
+ st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ break;
+ case CODEC_ID_ADPCM_MS:
+ case CODEC_ID_ADPCM_IMA_WAV:
+ st->codec->block_align = sc->bytes_per_frame;
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ unsigned int i, entries;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ entries = get_be32(pb);
+
+ if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
+ return -1;
+
+ dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
+
+ sc->sample_to_chunk_sz = entries;
+ sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
+ if (!sc->sample_to_chunk)
+ return -1;
+ for(i=0; i<entries; i++) {
+ sc->sample_to_chunk[i].first = get_be32(pb);
+ sc->sample_to_chunk[i].count = get_be32(pb);
+ sc->sample_to_chunk[i].id = get_be32(pb);
+ }
+ return 0;
+}
+
+static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ unsigned int i, entries;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ entries = get_be32(pb);
+
+ if(entries >= UINT_MAX / sizeof(int))
+ return -1;
+
+ sc->keyframe_count = entries;
+
+ dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
+
+ sc->keyframes = av_malloc(entries * sizeof(int));
+ if (!sc->keyframes)
+ return -1;
+ for(i=0; i<entries; i++) {
+ sc->keyframes[i] = get_be32(pb);
+ //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
+ }
+ return 0;
+}
+
+static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ unsigned int i, entries, sample_size;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+
+ sample_size = get_be32(pb);
+ if (!sc->sample_size) /* do not overwrite value computed in stsd */
+ sc->sample_size = sample_size;
+ entries = get_be32(pb);
+ if(entries >= UINT_MAX / sizeof(int))
+ return -1;
+
+ sc->sample_count = entries;
+ if (sample_size)
+ return 0;
+
+ dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
+
+ sc->sample_sizes = av_malloc(entries * sizeof(int));
+ if (!sc->sample_sizes)
+ return -1;
+ for(i=0; i<entries; i++) {
+ sc->sample_sizes[i] = get_be32(pb);
+ dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
+ }
+ return 0;
+}
+
+static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ unsigned int i, entries;
+ int64_t duration=0;
+ int64_t total_sample_count=0;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+ entries = get_be32(pb);
+ if(entries >= UINT_MAX / sizeof(MOV_stts_t))
+ return -1;
+
+ sc->stts_count = entries;
+ sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
+ if (!sc->stts_data)
+ return -1;
+ dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
+
+ sc->time_rate=0;
+
+ for(i=0; i<entries; i++) {
+ int sample_duration;
+ int sample_count;
+
+ sample_count=get_be32(pb);
+ sample_duration = get_be32(pb);
+ sc->stts_data[i].count= sample_count;
+ sc->stts_data[i].duration= sample_duration;
+
+ sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
+
+ dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
+
+ duration+=(int64_t)sample_duration*sample_count;
+ total_sample_count+=sample_count;
+ }
+
+ st->nb_frames= total_sample_count;
+ if(duration)
+ st->duration= duration;
+ return 0;
+}
+
+static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ MOVStreamContext *sc = st->priv_data;
+ unsigned int i, entries;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+ entries = get_be32(pb);
+ if(entries >= UINT_MAX / sizeof(MOV_stts_t))
+ return -1;
+
+ sc->ctts_count = entries;
+ sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
+ if (!sc->ctts_data)
+ return -1;
+ dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
+
+ for(i=0; i<entries; i++) {
+ int count =get_be32(pb);
+ int duration =get_be32(pb);
+
+ if (duration < 0) {
+ av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
+ sc->ctts_count = 0;
+ url_fskip(pb, 8 * (entries - i - 1));
+ break;
+ }
+ sc->ctts_data[i].count = count;
+ sc->ctts_data[i].duration= duration;
+
+ sc->time_rate= ff_gcd(sc->time_rate, duration);
+ }
+ return 0;
+}
+
+static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st;
+ MOVStreamContext *sc;
+
+ st = av_new_stream(c->fc, c->fc->nb_streams);
+ if (!st) return -2;
+ sc = av_mallocz(sizeof(MOVStreamContext));
+ if (!sc) {
+ av_free(st);
+ return -1;
+ }
+
+ st->priv_data = sc;
+ st->codec->codec_type = CODEC_TYPE_DATA;
+ st->start_time = 0; /* XXX: check */
+
+ return mov_read_default(c, pb, atom);
+}
+
+static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
+{
+ uint16_t str_size = get_be16(pb); /* string length */;
+
+ get_be16(pb); /* skip language */
+ get_buffer(pb, str, FFMIN(size, str_size));
+}
+
+static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ uint64_t end = url_ftell(pb) + atom.size;
+
+ while (url_ftell(pb) + 8 < end) {
+ uint32_t tag_size = get_be32(pb);
+ uint32_t tag = get_le32(pb);
+ uint64_t next = url_ftell(pb) + tag_size - 8;
+
+ if (next > end) // stop if tag_size is wrong
+ break;
+
+ switch (tag) {
+ case MKTAG(0xa9,'n','a','m'):
+ mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
+ break;
+ case MKTAG(0xa9,'w','r','t'):
+ mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
+ break;
+ case MKTAG(0xa9,'c','p','y'):
+ mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
+ break;
+ case MKTAG(0xa9,'i','n','f'):
+ mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
+ break;
+ default:
+ break;
+ }
+
+ url_fseek(pb, next, SEEK_SET);
+ }
+
+ return 0;
+}
+
+static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ AVStream *st = c->fc->streams[c->fc->nb_streams-1];
+ int version = get_byte(pb);
+
+ get_byte(pb); get_byte(pb);
+ get_byte(pb); /* flags */
+ /*
+ MOV_TRACK_ENABLED 0x0001
+ MOV_TRACK_IN_MOVIE 0x0002
+ MOV_TRACK_IN_PREVIEW 0x0004
+ MOV_TRACK_IN_POSTER 0x0008
+ */
+
+ if (version == 1) {
+ get_be64(pb);
+ get_be64(pb);
+ } else {
+ get_be32(pb); /* creation time */
+ get_be32(pb); /* modification time */
+ }
+ st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
+ get_be32(pb); /* reserved */
+ st->start_time = 0; /* check */
+ (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
+ get_be32(pb); /* reserved */
+ get_be32(pb); /* reserved */
+
+ get_be16(pb); /* layer */
+ get_be16(pb); /* alternate group */
+ get_be16(pb); /* volume */
+ get_be16(pb); /* reserved */
+
+ url_fskip(pb, 36); /* display matrix */
+
+ /* those are fixed-point */
+ get_be32(pb); /* track width */
+ get_be32(pb); /* track height */
+
+ 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, ByteIOContext *pb, MOV_atom_t atom)
+{
+ int err;
+
+ if (atom.size < 8)
+ return 0; /* continue */
+ if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
+ url_fskip(pb, atom.size - 4);
+ return 0;
+ }
+ atom.type = get_le32(pb);
+ atom.offset += 8;
+ atom.size -= 8;
+ if (atom.type != MKTAG('m', 'd', 'a', 't')) {
+ url_fskip(pb, atom.size);
+ return 0;
+ }
+ err = mov_read_mdat(c, pb, atom);
+ return err;
+}
+
+static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+#ifdef CONFIG_ZLIB
+ ByteIOContext ctx;
+ uint8_t *cmov_data;
+ uint8_t *moov_data; /* uncompressed data */
+ long cmov_len, moov_len;
+ int ret;
+
+ get_be32(pb); /* dcom atom */
+ if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
+ return -1;
+ if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
+ av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
+ return -1;
+ }
+ get_be32(pb); /* cmvd atom */
+ if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
+ return -1;
+ moov_len = get_be32(pb); /* uncompressed size */
+ cmov_len = atom.size - 6 * 4;
+
+ cmov_data = av_malloc(cmov_len);
+ if (!cmov_data)
+ return -1;
+ moov_data = av_malloc(moov_len);
+ if (!moov_data) {
+ av_free(cmov_data);
+ return -1;
+ }
+ get_buffer(pb, cmov_data, cmov_len);
+ if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
+ return -1;
+ if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
+ return -1;
+ atom.type = MKTAG( 'm', 'o', 'o', 'v' );
+ atom.offset = 0;
+ atom.size = moov_len;
+#ifdef DEBUG
+// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
+#endif
+ ret = mov_read_default(c, &ctx, atom);
+ 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 -1;
+#endif
+}
+
+/* edit list atom */
+static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
+{
+ MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
+ int i, edit_count;
+
+ get_byte(pb); /* version */
+ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
+ edit_count= sc->edit_count = get_be32(pb); /* entries */
+
+ for(i=0; i<edit_count; i++){
+ int time;
+ get_be32(pb); /* Track duration */
+ time = get_be32(pb); /* Media time */
+ get_be32(pb); /* Media rate */
+ if (time != 0)
+ av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
+ "a/v desync might occur, patch welcome\n");
+ }
+ dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
+ return 0;
+}
+
+static const MOVParseTableEntry mov_default_parse_table[] = {
+/* mp4 atoms */
+{ 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_extradata },
+{ 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( 'j', 'p', '2', 'h' ), mov_read_extradata },
+{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
+{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
+{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
+{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
+{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
+{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
+{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
+{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
+{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
+{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
+{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
+{ 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( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
+{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
+{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
+{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
+{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
+{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
+{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
+{ 0, NULL }
+};
+
+/* XXX: is it sufficient ? */
+static int mov_probe(AVProbeData *p)
+{
+ unsigned int offset;
+ uint32_t tag;
+ int score = 0;
+
+ /* check file header */
+ offset = 0;
+ for(;;) {
+ /* ignore invalid offset */
+ if ((offset + 8) > (unsigned int)p->buf_size)
+ return score;
+ tag = AV_RL32(p->buf + offset + 4);
+ switch(tag) {
+ /* check for obvious tags */
+ case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
+ case MKTAG( 'm', 'o', 'o', 'v' ):
+ case MKTAG( 'm', 'd', 'a', 't' ):
+ case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
+ case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
+ return AVPROBE_SCORE_MAX;
+ /* those are more common words, so rate then a bit less */
+ case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
+ case MKTAG( 'w', 'i', 'd', 'e' ):
+ case MKTAG( 'f', 'r', 'e', 'e' ):
+ case MKTAG( 'j', 'u', 'n', 'k' ):
+ case MKTAG( 'p', 'i', 'c', 't' ):
+ return AVPROBE_SCORE_MAX - 5;
+ case MKTAG(0x82,0x82,0x7f,0x7d ):
+ case MKTAG( 'f', 't', 'y', 'p' ):
+ case MKTAG( 's', 'k', 'i', 'p' ):
+ case MKTAG( 'u', 'u', 'i', 'd' ):
+ offset = AV_RB32(p->buf+offset) + offset;
+ /* if we only find those cause probedata is too small at least rate them */
+ score = AVPROBE_SCORE_MAX - 50;
+ break;
+ default:
+ /* unrecognized tag */
+ return score;
+ }
+ }
+ return score;
+}
+
+static void mov_build_index(MOVContext *mov, AVStream *st)
+{
+ MOVStreamContext *sc = st->priv_data;
+ offset_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 i, j;
+
+ if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
+ sc->audio_cid == -2) {
+ unsigned int current_sample = 0;
+ unsigned int stts_sample = 0;
+ unsigned int keyframe, sample_size;
+ unsigned int distance = 0;
+ int key_off = sc->keyframes && sc->keyframes[0] == 1;
+
+ st->nb_frames = sc->sample_count;
+ for (i = 0; i < sc->chunk_count; i++) {
+ current_offset = sc->chunk_offsets[i];
+ if (stsc_index + 1 < sc->sample_to_chunk_sz &&
+ i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
+ stsc_index++;
+ for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
+ if (current_sample >= sc->sample_count) {
+ av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
+ goto out;
+ }
+ keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
+ if (keyframe) {
+ distance = 0;
+ if (stss_index + 1 < sc->keyframe_count)
+ stss_index++;
+ }
+ sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
+ dprintf(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);
+ if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
+ av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
+ keyframe ? AVINDEX_KEYFRAME : 0);
+ current_offset += sample_size;
+ assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
+ current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
+ 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++;
+ }
+ }
+ }
+ } else { /* read whole chunk */
+ unsigned int chunk_samples, chunk_size, chunk_duration;
+ unsigned int frames = 1;
+ for (i = 0; i < sc->chunk_count; i++) {
+ current_offset = sc->chunk_offsets[i];
+ if (stsc_index + 1 < sc->sample_to_chunk_sz &&
+ i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
+ stsc_index++;
+ chunk_samples = sc->sample_to_chunk[stsc_index].count;
+ /* get chunk size, beware of alaw/ulaw/mace */
+ if (sc->samples_per_frame > 0 &&
+ (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
+ if (sc->samples_per_frame < 1024)
+ chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
+ else {
+ chunk_size = sc->bytes_per_frame;
+ frames = chunk_samples / sc->samples_per_frame;
+ chunk_samples = sc->samples_per_frame;
+ }
+ } else if (sc->sample_size > 1 || st->codec->bits_per_sample == 8) {
+ chunk_size = chunk_samples * sc->sample_size;
+ } else {
+ av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
+ goto out;
+ }
+ for (j = 0; j < frames; j++) {
+ av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
+ /* get chunk duration */
+ chunk_duration = 0;
+ while (chunk_samples > 0) {
+ if (chunk_samples < sc->stts_data[stts_index].count) {
+ chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
+ sc->stts_data[stts_index].count -= chunk_samples;
+ break;
+ } else {
+ chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
+ chunk_samples -= sc->stts_data[stts_index].count;
+ if (stts_index + 1 < sc->stts_count)
+ stts_index++;
+ }
+ }
+ current_offset += sc->bytes_per_frame;
+ dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
+ "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
+ assert(chunk_duration % sc->time_rate == 0);
+ current_dts += chunk_duration / sc->time_rate;
+ }
+ }
+ }
+ out:
+ /* adjust sample count to avindex entries */
+ sc->sample_count = st->nb_index_entries;
+}
+
+static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+ MOVContext *mov = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ int i, err;
+ MOV_atom_t atom = { 0, 0, 0 };
+
+ mov->fc = s;
+
+ if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
+ atom.size = url_fsize(pb);
+ else
+ atom.size = INT64_MAX;
+
+ /* check MOV header */
+ err = mov_read_default(mov, pb, atom);
+ if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
+ av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
+ err, mov->found_moov, mov->found_mdat, url_ftell(pb));
+ return -1;
+ }
+ dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
+
+ for(i=0; i<s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *sc = st->priv_data;
+ /* sanity checks */
+ if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
+ (!sc->sample_size && !sc->sample_count)){
+ av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
+ sc->sample_count = 0; //ignore track
+ continue;
+ }
+ if(!sc->time_rate)
+ sc->time_rate=1;
+ if(!sc->time_scale)
+ sc->time_scale= mov->time_scale;
+ av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
+
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
+ st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
+
+ if(st->duration != AV_NOPTS_VALUE){
+ assert(st->duration % sc->time_rate == 0);
+ st->duration /= sc->time_rate;
+ }
+ sc->ffindex = i;
+ mov_build_index(mov, st);
+
+ if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
+ if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
+ av_log(s, AV_LOG_ERROR, "stream %d, error opening external essence: %s\n",
+ st->index, strerror(errno));
+ } else
+ sc->pb = s->pb;
+
+ switch (st->codec->codec_id) {
+#ifdef CONFIG_H261_DECODER
+ case CODEC_ID_H261:
+#endif
+#ifdef CONFIG_H263_DECODER
+ case CODEC_ID_H263:
+#endif
+#ifdef CONFIG_MPEG4_DECODER
+ case CODEC_ID_MPEG4:
+#endif
+ st->codec->width= 0; /* let decoder init width/height */
+ st->codec->height= 0;
+ break;
+#ifdef CONFIG_LIBFAAD
+ case CODEC_ID_AAC:
+#endif
+#ifdef CONFIG_VORBIS_DECODER
+ case CODEC_ID_VORBIS:
+#endif
+ case CODEC_ID_MP3ON4:
+ st->codec->sample_rate= 0; /* let decoder init parameters properly */
+ break;
+ }
+ }
+
+ for(i=0; i<s->nb_streams; i++) {
+ MOVStreamContext *sc = s->streams[i]->priv_data;
+ /* Do not need those anymore. */
+ av_freep(&sc->chunk_offsets);
+ av_freep(&sc->sample_to_chunk);
+ av_freep(&sc->sample_sizes);
+ av_freep(&sc->keyframes);
+ av_freep(&sc->stts_data);
+ }
+ return 0;
+}
+
+static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ MOVContext *mov = s->priv_data;
+ MOVStreamContext *sc = 0;
+ AVIndexEntry *sample = 0;
+ int64_t best_dts = INT64_MAX;
+ int i;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MOVStreamContext *msc = st->priv_data;
+ if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
+ AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
+ int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
+ AV_TIME_BASE, msc->time_scale);
+ dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
+ if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
+ (!url_is_streamed(s->pb) &&
+ ((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;
+ sc = msc;
+ }
+ }
+ }
+ if (!sample)
+ return -1;
+ /* must be done just before reading, to avoid infinite loop on sample */
+ sc->current_sample++;
+ if (url_fseek(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 -1;
+ }
+ av_get_packet(sc->pb, pkt, sample->size);
+#ifdef CONFIG_DV_DEMUXER
+ if (mov->dv_demux && sc->dv_audio_container) {
+ dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
+ av_free(pkt->data);
+ pkt->size = 0;
+ if (dv_get_packet(mov->dv_demux, pkt) < 0)
+ return -1;
+ }
+#endif
+ pkt->stream_index = sc->ffindex;
+ pkt->dts = sample->timestamp;
+ if (sc->ctts_data) {
+ assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
+ pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
+ /* update ctts context */
+ sc->sample_to_ctime_sample++;
+ if (sc->sample_to_ctime_index < sc->ctts_count &&
+ sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
+ sc->sample_to_ctime_index++;
+ sc->sample_to_ctime_sample = 0;
+ }
+ } else {
+ pkt->pts = pkt->dts;
+ }
+ pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
+ pkt->pos = sample->pos;
+ dprintf(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(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);
+ dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
+ if (sample < 0) /* not sure what to do */
+ return -1;
+ sc->current_sample = sample;
+ dprintf(st->codec, "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->sample_to_ctime_index = i;
+ sc->sample_to_ctime_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 -1;
+
+ st = s->streams[stream_index];
+ sample = mov_seek_stream(st, sample_time, flags);
+ if (sample < 0)
+ return -1;
+
+ /* adjust seek timestamp to found sample timestamp */
+ seek_timestamp = st->index_entries[sample].timestamp;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ if (stream_index == i || st->discard == AVDISCARD_ALL)
+ continue;
+
+ timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
+ mov_seek_stream(st, timestamp, flags);
+ }
+ return 0;
+}
+
+static int mov_read_close(AVFormatContext *s)
+{
+ int i, j;
+ MOVContext *mov = s->priv_data;
+ for(i=0; i<s->nb_streams; i++) {
+ MOVStreamContext *sc = s->streams[i]->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);
+ if (sc->pb && sc->pb != s->pb)
+ url_fclose(sc->pb);
+ }
+ if(mov->dv_demux){
+ for(i=0; i<mov->dv_fctx->nb_streams; i++){
+ av_freep(&mov->dv_fctx->streams[i]->codec);
+ av_freep(&mov->dv_fctx->streams[i]);
+ }
+ av_freep(&mov->dv_fctx);
+ av_freep(&mov->dv_demux);
+ }
+ return 0;
+}
+
+AVInputFormat mov_demuxer = {
+ "mov,mp4,m4a,3gp,3g2,mj2",
+ "QuickTime/MPEG4/Motion JPEG 2000 format",
+ sizeof(MOVContext),
+ mov_probe,
+ mov_read_header,
+ mov_read_packet,
+ mov_read_close,
+ mov_read_seek,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-02 07:16:02 +0000