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ffmpeg支持G711音频和H.264视频数据封装进MP4文件
1.编译参数
在使用./configure编译ffmpeg库时，需要添加一些编译选项支持项目所需要的功能。具体参数如下：
--enable-encoder=pcm_alaw --enable-decoder=pcm_alaw //支持PCM和G711编解码
--enable-demuxer=mov //支持mov,mp4,m4a,3gp,3g2,mj2解复用
2.代码模块
ffmpeg本身是支持H264+AAC的mp4封装格式的，但是并不支持H264+G711的mp4封装格式。
ffmpeg中对MP4的打包处理是在movenc.c中，为了能够使ffmpeg支持H264+G711的mp4封装格式，同时也可以支持音频原始数据封装，修改libavformat/movenc.c代码以下两部分：
第一部分：
if (version == 2) {
avio_wb16(pb, 3);
avio_wb16(pb, 16);
avio_wb16(pb, 0xfffe);
avio_wb16(pb, 0);
avio_wb32(pb, 0x00010000);
avio_wb32(pb, 72);
avio_wb64(pb, av_double2int(track->enc->sample_rate));
avio_wb32(pb, track->enc->channels);
avio_wb32(pb, 0x7F000000);
avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
avio_wb32(pb, track->sample_size);
avio_wb32(pb, get_samples_per_packet(track));
} else {
if (track->mode == MODE_MOV) {
avio_wb16(pb, track->enc->channels);
if (track->enc->codec_id == AV_CODEC_ID_PCM_U8 ||
track->enc->codec_id == AV_CODEC_ID_PCM_S8)
avio_wb16(pb, 8); /* bits per sample */
else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_G726)
avio_wb16(pb, track->enc->bits_per_coded_sample);
else
avio_wb16(pb, 16);
avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
} else { /* reserved for mp4/3gp */
avio_wb16(pb, track->enc->channels > 0 ?
track->enc->channels : 1);
track->enc->bits_per_coded_sample = av_get_bits_per_sample(track->enc->codec_id);
avio_wb16(pb, track->enc->bits_per_coded_sample > 0 ?
track->enc->bits_per_coded_sample : 16);
avio_wb16(pb, 0);
}
avio_wb16(pb, 0); /* packet size (= 0) */
avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
track->enc->sample_rate : 0);
avio_wb16(pb, 0); /* Reserved */
}第二部分：
static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag;
if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
tag = mp4_get_codec_tag(s, track);
else if (track->mode == MODE_ISM) {
tag = mp4_get_codec_tag(s, track);
if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
tag = MKTAG('w', 'm', 'a', ' ');
} else if (track->mode == MODE_IPOD)
tag = ipod_get_codec_tag(s, track);
else if (track->mode & MODE_3GP)
tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
else if (track->mode == MODE_F4V)
tag = ff_codec_get_tag(codec_f4v_tags, track->enc->codec_id);
if (tag == 0){
tag = mov_get_codec_tag(s, track);
}
return tag;
}
3.源码<movenc.c>
/*
* MOV, 3GP, MP4 muxer
* Copyright (c) 2003 Thomas Raivio
* Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
* 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 <stdint.h>
#include <inttypes.h>
#include "movenc.h"
#include "avformat.h"
#include "avio_internal.h"
#include "riff.h"
#include "avio.h"
#include "isom.h"
#include "avc.h"
#include "libavcodec/ac3_parser.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#include "libavcodec/vc1_common.h"
#include "libavcodec/raw.h"
#include "internal.h"
#include "libavutil/avstring.h"
#include "libavutil/intfloat.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/pixdesc.h"
#include "libavutil/timecode.h"
#include "hevc.h"
#include "rtpenc.h"
#include "mov_chan.h"
#undef NDEBUG
#include <assert.h>
static const AVOption options[] = {
{ "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
{ "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
{ "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "video_track_timescale", "set timescale of all video tracks", offsetof(MOVMuxContext, video_track_timescale), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
{ "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ "fragment_index", "Fragment number of the next fragment", offsetof(MOVMuxContext, fragments), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL },
};
#define MOV_CLASS(flavor)\
static const AVClass flavor ## _muxer_class = {\
.class_name = #flavor " muxer",\
.item_name = av_default_item_name,\
.option = options,\
.version = LIBAVUTIL_VERSION_INT,\
};
static int get_moov_size(AVFormatContext *s);
static int utf8len(const uint8_t *b)
{
int len = 0;
int val;
while (*b) {
GET_UTF8(val, *b++, return -1;)
len++;
}
return len;
}
//FIXME support 64 bit variant with wide placeholders
static int64_t update_size(AVIOContext *pb, int64_t pos)
{
int64_t curpos = avio_tell(pb);
avio_seek(pb, pos, SEEK_SET);
avio_wb32(pb, curpos - pos); /* rewrite size */
avio_seek(pb, curpos, SEEK_SET);
return curpos - pos;
}
static int co64_required(const MOVTrack *track)
{
if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
return 1;
return 0;
}
/* Chunk offset atom */
static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
{
int i;
int mode64 = co64_required(track); // use 32 bit size variant if possible
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
if (mode64)
ffio_wfourcc(pb, "co64");
else
ffio_wfourcc(pb, "stco");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, track->chunkCount); /* entry count */
for (i = 0; i < track->entry; i++) {
if (!track->cluster[i].chunkNum)
continue;
if (mode64 == 1)
avio_wb64(pb, track->cluster[i].pos + track->data_offset);
else
avio_wb32(pb, track->cluster[i].pos + track->data_offset);
}
return update_size(pb, pos);
}
/* Sample size atom */
static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
{
int equalChunks = 1;
int i, j, entries = 0, tst = -1, oldtst = -1;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stsz");
avio_wb32(pb, 0); /* version & flags */
for (i = 0; i < track->entry; i++) {
tst = track->cluster[i].size / track->cluster[i].entries;
if (oldtst != -1 && tst != oldtst)
equalChunks = 0;
oldtst = tst;
entries += track->cluster[i].entries;
}
if (equalChunks && track->entry) {
int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
avio_wb32(pb, sSize); // sample size
avio_wb32(pb, entries); // sample count
} else {
avio_wb32(pb, 0); // sample size
avio_wb32(pb, entries); // sample count
for (i = 0; i < track->entry; i++) {
for (j = 0; j < track->cluster[i].entries; j++) {
avio_wb32(pb, track->cluster[i].size /
track->cluster[i].entries);
}
}
}
return update_size(pb, pos);
}
/* Sample to chunk atom */
static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
{
int index = 0, oldval = -1, i;
int64_t entryPos, curpos;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stsc");
avio_wb32(pb, 0); // version & flags
entryPos = avio_tell(pb);
avio_wb32(pb, track->chunkCount); // entry count
for (i = 0; i < track->entry; i++) {
if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
avio_wb32(pb, 0x1); // sample description index
oldval = track->cluster[i].samples_in_chunk;
index++;
}
}
curpos = avio_tell(pb);
avio_seek(pb, entryPos, SEEK_SET);
avio_wb32(pb, index); // rewrite size
avio_seek(pb, curpos, SEEK_SET);
return update_size(pb, pos);
}
/* Sync sample atom */
static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
{
int64_t curpos, entryPos;
int i, index = 0;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
avio_wb32(pb, 0); // version & flags
entryPos = avio_tell(pb);
avio_wb32(pb, track->entry); // entry count
for (i = 0; i < track->entry; i++) {
if (track->cluster[i].flags & flag) {
avio_wb32(pb, i + 1);
index++;
}
}
curpos = avio_tell(pb);
avio_seek(pb, entryPos, SEEK_SET);
avio_wb32(pb, index); // rewrite size
avio_seek(pb, curpos, SEEK_SET);
return update_size(pb, pos);
}
static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, 0x11); /* size */
if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
else ffio_wfourcc(pb, "damr");
ffio_wfourcc(pb, "FFMP");
avio_w8(pb, 0); /* decoder version */
avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
avio_w8(pb, 0x00); /* Mode change period (no restriction) */
avio_w8(pb, 0x01); /* Frames per sample */
return 0x11;
}
static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
{
GetBitContext gbc;
PutBitContext pbc;
uint8_t buf[3];
int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
if (track->vos_len < 7)
return -1;
avio_wb32(pb, 11);
ffio_wfourcc(pb, "dac3");
init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
fscod = get_bits(&gbc, 2);
frmsizecod = get_bits(&gbc, 6);
bsid = get_bits(&gbc, 5);
bsmod = get_bits(&gbc, 3);
acmod = get_bits(&gbc, 3);
if (acmod == 2) {
skip_bits(&gbc, 2); // dsurmod
} else {
if ((acmod & 1) && acmod != 1)
skip_bits(&gbc, 2); // cmixlev
if (acmod & 4)
skip_bits(&gbc, 2); // surmixlev
}
lfeon = get_bits1(&gbc);
init_put_bits(&pbc, buf, sizeof(buf));
put_bits(&pbc, 2, fscod);
put_bits(&pbc, 5, bsid);
put_bits(&pbc, 3, bsmod);
put_bits(&pbc, 3, acmod);
put_bits(&pbc, 1, lfeon);
put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
put_bits(&pbc, 5, 0); // reserved
flush_put_bits(&pbc);
avio_write(pb, buf, sizeof(buf));
return 11;
}
struct eac3_info {
AVPacket pkt;
uint8_t ec3_done;
uint8_t num_blocks;
/* Layout of the EC3SpecificBox */
/* maximum bitrate */
uint16_t data_rate;
/* number of independent substreams */
uint8_t num_ind_sub;
struct {
/* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
uint8_t fscod;
/* bit stream identification 5 bits */
uint8_t bsid;
/* one bit reserved */
/* audio service mixing (not supported yet) 1 bit */
/* bit stream mode 3 bits */
uint8_t bsmod;
/* audio coding mode 3 bits */
uint8_t acmod;
/* sub woofer on 1 bit */
uint8_t lfeon;
/* 3 bits reserved */
/* number of dependent substreams associated with this substream 4 bits */
uint8_t num_dep_sub;
/* channel locations of the dependent substream(s), if any, 9 bits */
uint16_t chan_loc;
/* if there is no dependent substream, then one bit reserved instead */
} substream[1]; /* TODO: support 8 independent substreams */
};
static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
{
GetBitContext gbc;
AC3HeaderInfo tmp, *hdr = &tmp;
struct eac3_info *info;
int num_blocks;
if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
return AVERROR(ENOMEM);
info = track->eac3_priv;
init_get_bits(&gbc, pkt->data, pkt->size * 8);
if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0) {
/* drop the packets until we see a good one */
if (!track->entry) {
av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
return 0;
}
return AVERROR_INVALIDDATA;
}
info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
num_blocks = hdr->num_blocks;
if (!info->ec3_done) {
/* AC-3 substream must be the first one */
if (hdr->bitstream_id <= 10 && hdr->substreamid != 0)
return AVERROR(EINVAL);
/* this should always be the case, given that our AC-3 parser
* concatenates dependent frames to their independent parent */
if (hdr->frame_type == EAC3_FRAME_TYPE_INDEPENDENT) {
/* substream ids must be incremental */
if (hdr->substreamid > info->num_ind_sub + 1)
return AVERROR(EINVAL);
if (hdr->substreamid == info->num_ind_sub + 1) {
//info->num_ind_sub++;
avpriv_request_sample(track->enc, "Multiple independent substreams");
return AVERROR_PATCHWELCOME;
} else if (hdr->substreamid < info->num_ind_sub ||
hdr->substreamid == 0 && info->substream[0].bsid) {
info->ec3_done = 1;
goto concatenate;
}
}
/* fill the info needed for the "dec3" atom */
info->substream[hdr->substreamid].fscod = hdr->sr_code;
info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
info->substream[hdr->substreamid].acmod = hdr->channel_mode;
info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
/* Parse dependent substream(s), if any */
if (pkt->size != hdr->frame_size) {
int cumul_size = hdr->frame_size;
int parent = hdr->substreamid;
while (cumul_size != pkt->size) {
int i;
init_get_bits(&gbc, pkt->data + cumul_size, (pkt->size - cumul_size) * 8);
if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0)
return AVERROR_INVALIDDATA;
if (hdr->frame_type != EAC3_FRAME_TYPE_DEPENDENT)
return AVERROR(EINVAL);
cumul_size += hdr->frame_size;
info->substream[parent].num_dep_sub++;
/* header is parsed up to lfeon, but custom channel map may be needed */
/* skip bsid */
skip_bits(&gbc, 5);
/* skip volume control params */
for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
skip_bits(&gbc, 5); // skip dialog normalization
if (get_bits1(&gbc)) {
skip_bits(&gbc, 8); // skip compression gain word
}
}
/* get the dependent stream channel map, if exists */
if (get_bits1(&gbc))
info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
else
info->substream[parent].chan_loc |= hdr->channel_mode;
}
}
}
concatenate:
if (!info->num_blocks && num_blocks == 6)
return pkt->size;
else if (info->num_blocks + num_blocks > 6)
return AVERROR_INVALIDDATA;
if (!info->num_blocks) {
int ret;
if ((ret = av_copy_packet(&info->pkt, pkt)) < 0)
return ret;
info->num_blocks = num_blocks;
return 0;
} else {
int ret;
if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
return ret;
memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
info->num_blocks += num_blocks;
info->pkt.duration += pkt->duration;
if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
return ret;
if (info->num_blocks != 6)
return 0;
av_free_packet(pkt);
if ((ret = av_copy_packet(pkt, &info->pkt)) < 0)
return ret;
av_free_packet(&info->pkt);
info->num_blocks = 0;
}
return pkt->size;
}
static int mov_write_eac3_tag(AVIOContext *pb, MOVTrack *track)
{
PutBitContext pbc;
uint8_t *buf;
struct eac3_info *info;
int size, i;
if (!track->eac3_priv)
return AVERROR(EINVAL);
info = track->eac3_priv;
size = 2 + 4 * (info->num_ind_sub + 1);
buf = av_malloc(size);
if (!buf) {
size = AVERROR(ENOMEM);
goto end;
}
init_put_bits(&pbc, buf, size);
put_bits(&pbc, 13, info->data_rate);
put_bits(&pbc, 3, info->num_ind_sub);
for (i = 0; i <= info->num_ind_sub; i++) {
put_bits(&pbc, 2, info->substream[i].fscod);
put_bits(&pbc, 5, info->substream[i].bsid);
put_bits(&pbc, 1, 0); /* reserved */
put_bits(&pbc, 1, 0); /* asvc */
put_bits(&pbc, 3, info->substream[i].bsmod);
put_bits(&pbc, 3, info->substream[i].acmod);
put_bits(&pbc, 1, info->substream[i].lfeon);
put_bits(&pbc, 5, 0); /* reserved */
put_bits(&pbc, 4, info->substream[i].num_dep_sub);
if (!info->substream[i].num_dep_sub) {
put_bits(&pbc, 1, 0); /* reserved */
size--;
} else {
put_bits(&pbc, 9, info->substream[i].chan_loc);
}
}
flush_put_bits(&pbc);
avio_wb32(pb, size + 8);
ffio_wfourcc(pb, "dec3");
avio_write(pb, buf, size);
av_free(buf);
end:
av_free_packet(&info->pkt);
av_freep(&track->eac3_priv);
return size;
}
/**
* This function writes extradata "as is".
* Extradata must be formatted like a valid atom (with size and tag).
*/
static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
{
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
return track->enc->extradata_size;
}
static int mov_write_enda_tag(AVIOContext *pb)
{
avio_wb32(pb, 10);
ffio_wfourcc(pb, "enda");
avio_wb16(pb, 1); /* little endian */
return 10;
}
static int mov_write_enda_tag_be(AVIOContext *pb)
{
avio_wb32(pb, 10);
ffio_wfourcc(pb, "enda");
avio_wb16(pb, 0); /* big endian */
return 10;
}
static void put_descr(AVIOContext *pb, int tag, unsigned int size)
{
int i = 3;
avio_w8(pb, tag);
for (; i > 0; i--)
avio_w8(pb, (size >> (7 * i)) | 0x80);
avio_w8(pb, size & 0x7F);
}
static unsigned compute_avg_bitrate(MOVTrack *track)
{
uint64_t size = 0;
int i;
if (!track->track_duration)
return 0;
for (i = 0; i < track->entry; i++)
size += track->cluster[i].size;
return size * 8 * track->timescale / track->track_duration;
}
static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
{
int64_t pos = avio_tell(pb);
int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
unsigned avg_bitrate;
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, "esds");
avio_wb32(pb, 0); // Version
// ES descriptor
put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
avio_wb16(pb, track->track_id);
avio_w8(pb, 0x00); // flags (= no flags)
// DecoderConfig descriptor
put_descr(pb, 0x04, 13 + decoder_specific_info_len);
// Object type indication
if ((track->enc->codec_id == AV_CODEC_ID_MP2 ||
track->enc->codec_id == AV_CODEC_ID_MP3) &&
track->enc->sample_rate > 24000)
avio_w8(pb, 0x6B); // 11172-3
else
avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
// the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
// plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
avio_w8(pb, 0x15); // flags (= Audiostream)
else
avio_w8(pb, 0x11); // flags (= Visualstream)
avio_wb24(pb, track->enc->rc_buffer_size >> 3); // Buffersize DB
avg_bitrate = compute_avg_bitrate(track);
// maxbitrate (FIXME should be max rate in any 1 sec window)
avio_wb32(pb, FFMAX3(track->enc->bit_rate, track->enc->rc_max_rate, avg_bitrate));
avio_wb32(pb, avg_bitrate);
if (track->vos_len) {
// DecoderSpecific info descriptor
put_descr(pb, 0x05, track->vos_len);
avio_write(pb, track->vos_data, track->vos_len);
}
// SL descriptor
put_descr(pb, 0x06, 1);
avio_w8(pb, 0x02);
return update_size(pb, pos);
}
static int mov_pcm_le_gt16(enum AVCodecID codec_id)
{
return codec_id == AV_CODEC_ID_PCM_S24LE ||
codec_id == AV_CODEC_ID_PCM_S32LE ||
codec_id == AV_CODEC_ID_PCM_F32LE ||
codec_id == AV_CODEC_ID_PCM_F64LE;
}
static int mov_pcm_be_gt16(enum AVCodecID codec_id)
{
return codec_id == AV_CODEC_ID_PCM_S24BE ||
codec_id == AV_CODEC_ID_PCM_S32BE ||
codec_id == AV_CODEC_ID_PCM_F32BE ||
codec_id == AV_CODEC_ID_PCM_F64BE;
}
static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
{
int ret;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
avio_wl32(pb, track->tag); // store it byteswapped
track->enc->codec_tag = av_bswap16(track->tag >> 16);
if ((ret = ff_put_wav_header(pb, track->enc, 0)) < 0)
return ret;
return update_size(pb, pos);
}
static int mov_write_wfex_tag(AVIOContext *pb, MOVTrack *track)
{
int ret;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "wfex");
if ((ret = ff_put_wav_header(pb, track->enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
return ret;
return update_size(pb, pos);
}
static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
{
uint32_t layout_tag, bitmap;
int64_t pos = avio_tell(pb);
layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
track->enc->channel_layout,
&bitmap);
if (!layout_tag) {
av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
"lack of channel information\n");
return 0;
}
if (track->multichannel_as_mono)
return 0;
avio_wb32(pb, 0); // Size
ffio_wfourcc(pb, "chan"); // Type
avio_w8(pb, 0); // Version
avio_wb24(pb, 0); // Flags
avio_wb32(pb, layout_tag); // mChannelLayoutTag
avio_wb32(pb, bitmap); // mChannelBitmap
avio_wb32(pb, 0); // mNumberChannelDescriptions
return update_size(pb, pos);
}
static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "wave");
if (track->enc->codec_id != AV_CODEC_ID_QDM2) {
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "frma");
avio_wl32(pb, track->tag);
}
if (track->enc->codec_id == AV_CODEC_ID_AAC) {
/* useless atom needed by mplayer, ipod, not needed by quicktime */
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "mp4a");
avio_wb32(pb, 0);
mov_write_esds_tag(pb, track);
} else if (mov_pcm_le_gt16(track->enc->codec_id)) {
mov_write_enda_tag(pb);
} else if (mov_pcm_be_gt16(track->enc->codec_id)) {
mov_write_enda_tag_be(pb);
} else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB) {
mov_write_amr_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_AC3) {
mov_write_ac3_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_EAC3) {
mov_write_eac3_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_ALAC ||
track->enc->codec_id == AV_CODEC_ID_QDM2) {
mov_write_extradata_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
mov_write_ms_tag(pb, track);
}
avio_wb32(pb, 8); /* size */
avio_wb32(pb, 0); /* null tag */
return update_size(pb, pos);
}
static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)
{
uint8_t *unescaped;
const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
int unescaped_size, seq_found = 0;
int level = 0, interlace = 0;
int packet_seq = track->vc1_info.packet_seq;
int packet_entry = track->vc1_info.packet_entry;
int slices = track->vc1_info.slices;
PutBitContext pbc;
if (track->start_dts == AV_NOPTS_VALUE) {
/* No packets written yet, vc1_info isn't authoritative yet. */
/* Assume inline sequence and entry headers. This will be
* overwritten at the end if the file is seekable. */
packet_seq = packet_entry = 1;
}
unescaped = av_mallocz(track->vos_len + FF_INPUT_BUFFER_PADDING_SIZE);
if (!unescaped)
return AVERROR(ENOMEM);
start = find_next_marker(track->vos_data, end);
for (next = start; next < end; start = next) {
GetBitContext gb;
int size;
next = find_next_marker(start + 4, end);
size = next - start - 4;
if (size <= 0)
continue;
unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
init_get_bits(&gb, unescaped, 8 * unescaped_size);
if (AV_RB32(start) == VC1_CODE_SEQHDR) {
int profile = get_bits(&gb, 2);
if (profile != PROFILE_ADVANCED) {
av_free(unescaped);
return AVERROR(ENOSYS);
}
seq_found = 1;
level = get_bits(&gb, 3);
/* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
* width, height */
skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
skip_bits(&gb, 1); /* broadcast */
interlace = get_bits1(&gb);
skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
}
}
if (!seq_found) {
av_free(unescaped);
return AVERROR(ENOSYS);
}
init_put_bits(&pbc, buf, 7);
/* VC1DecSpecStruc */
put_bits(&pbc, 4, 12); /* profile - advanced */
put_bits(&pbc, 3, level);
put_bits(&pbc, 1, 0); /* reserved */
/* VC1AdvDecSpecStruc */
put_bits(&pbc, 3, level);
put_bits(&pbc, 1, 0); /* cbr */
put_bits(&pbc, 6, 0); /* reserved */
put_bits(&pbc, 1, !interlace); /* no interlace */
put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
put_bits(&pbc, 1, !slices); /* no slice code */
put_bits(&pbc, 1, 0); /* no bframe */
put_bits(&pbc, 1, 0); /* reserved */
/* framerate */
if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
else
put_bits32(&pbc, 0xffffffff);
flush_put_bits(&pbc);
av_free(unescaped);
return 0;
}
static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
{
uint8_t buf[7] = { 0 };
int ret;
if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
return ret;
avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
ffio_wfourcc(pb, "dvc1");
track->vc1_info.struct_offset = avio_tell(pb);
avio_write(pb, buf, sizeof(buf));
avio_write(pb, track->vos_data, track->vos_len);
return 0;
}
static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, track->vos_len + 8);
ffio_wfourcc(pb, "glbl");
avio_write(pb, track->vos_data, track->vos_len);
return 8 + track->vos_len;
}
/**
* Compute flags for 'lpcm' tag.
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
*/
static int mov_get_lpcm_flags(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_F64BE:
return 11;
case AV_CODEC_ID_PCM_F32LE:
case AV_CODEC_ID_PCM_F64LE:
return 9;
case AV_CODEC_ID_PCM_U8:
return 10;
case AV_CODEC_ID_PCM_S16BE:
case AV_CODEC_ID_PCM_S24BE:
case AV_CODEC_ID_PCM_S32BE:
return 14;
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S24LE:
case AV_CODEC_ID_PCM_S32LE:
return 12;
default:
return 0;
}
}
static int get_cluster_duration(MOVTrack *track, int cluster_idx)
{
int64_t next_dts;
if (cluster_idx >= track->entry)
return 0;
if (cluster_idx + 1 == track->entry)
next_dts = track->track_duration + track->start_dts;
else
next_dts = track->cluster[cluster_idx + 1].dts;
next_dts -= track->cluster[cluster_idx].dts;
av_assert0(next_dts >= 0);
av_assert0(next_dts <= INT_MAX);
return next_dts;
}
static int get_samples_per_packet(MOVTrack *track)
{
int i, first_duration;
// return track->enc->frame_size;
/* use 1 for raw PCM */
if (!track->audio_vbr)
return 1;
/* check to see if duration is constant for all clusters */
if (!track->entry)
return 0;
first_duration = get_cluster_duration(track, 0);
for (i = 1; i < track->entry; i++) {
if (get_cluster_duration(track, i) != first_duration)
return 0;
}
return first_duration;
}
static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int version = 0;
uint32_t tag = track->tag;
if (track->mode == MODE_MOV) {
if (track->timescale > UINT16_MAX) {
if (mov_get_lpcm_flags(track->enc->codec_id))
tag = AV_RL32("lpcm");
version = 2;
} else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
mov_pcm_be_gt16(track->enc->codec_id) ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
track->enc->codec_id == AV_CODEC_ID_QDM2) {
version = 1;
}
}
avio_wb32(pb, 0); /* size */
avio_wl32(pb, tag); // store it byteswapped
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
/* SoundDescription */
avio_wb16(pb, version); /* Version */
avio_wb16(pb, 0); /* Revision level */
avio_wb32(pb, 0); /* Reserved */
if (version == 2) {
avio_wb16(pb, 3);
avio_wb16(pb, 16);
avio_wb16(pb, 0xfffe);
avio_wb16(pb, 0);
avio_wb32(pb, 0x00010000);
avio_wb32(pb, 72);
avio_wb64(pb, av_double2int(track->enc->sample_rate));
avio_wb32(pb, track->enc->channels);
avio_wb32(pb, 0x7F000000);
avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
avio_wb32(pb, track->sample_size);
avio_wb32(pb, get_samples_per_packet(track));
} else {
if (track->mode == MODE_MOV) {
avio_wb16(pb, track->enc->channels);
if (track->enc->codec_id == AV_CODEC_ID_PCM_U8 ||
track->enc->codec_id == AV_CODEC_ID_PCM_S8)
avio_wb16(pb, 8); /* bits per sample */
else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_G726)
avio_wb16(pb, track->enc->bits_per_coded_sample);
else
avio_wb16(pb, 16);
avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
} else { /* reserved for mp4/3gp */
avio_wb16(pb, track->enc->channels > 0 ?
track->enc->channels : 1);
track->enc->bits_per_coded_sample = av_get_bits_per_sample(track->enc->codec_id);
avio_wb16(pb, track->enc->bits_per_coded_sample > 0 ?
track->enc->bits_per_coded_sample : 16);
avio_wb16(pb, 0);
}
avio_wb16(pb, 0); /* packet size (= 0) */
avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
track->enc->sample_rate : 0);
avio_wb16(pb, 0); /* Reserved */
}
if (version == 1) { /* SoundDescription V1 extended info */
if (mov_pcm_le_gt16(track->enc->codec_id) ||
mov_pcm_be_gt16(track->enc->codec_id))
avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
else
avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
avio_wb32(pb, track->sample_size / track->enc->channels); /* Bytes per packet */
avio_wb32(pb, track->sample_size); /* Bytes per frame */
avio_wb32(pb, 2); /* Bytes per sample */
}
if (track->mode == MODE_MOV &&
(track->enc->codec_id == AV_CODEC_ID_AAC ||
track->enc->codec_id == AV_CODEC_ID_AC3 ||
track->enc->codec_id == AV_CODEC_ID_EAC3 ||
track->enc->codec_id == AV_CODEC_ID_AMR_NB ||
track->enc->codec_id == AV_CODEC_ID_ALAC ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
track->enc->codec_id == AV_CODEC_ID_QDM2 ||
(mov_pcm_le_gt16(track->enc->codec_id) && version==1) ||
(mov_pcm_be_gt16(track->enc->codec_id) && version==1)))
mov_write_wave_tag(pb, track);
else if (track->tag == MKTAG('m','p','4','a'))
mov_write_esds_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB)
mov_write_amr_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_AC3)
mov_write_ac3_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_EAC3)
mov_write_eac3_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_ALAC)
mov_write_extradata_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO)
mov_write_wfex_tag(pb, track);
else if (track->vos_len > 0)
mov_write_glbl_tag(pb, track);
if (track->mode == MODE_MOV && track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
mov_write_chan_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_d263_tag(AVIOContext *pb)
{
avio_wb32(pb, 0xf); /* size */
ffio_wfourcc(pb, "d263");
ffio_wfourcc(pb, "FFMP");
avio_w8(pb, 0); /* decoder version */
/* FIXME use AVCodecContext level/profile, when encoder will set values */
avio_w8(pb, 0xa); /* level */
avio_w8(pb, 0); /* profile */
return 0xf;
}
static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "avcC");
ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
return update_size(pb, pos);
}
static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "hvcC");
ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
return update_size(pb, pos);
}
/* also used by all avid codecs (dv, imx, meridien) and their variants */
static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
{
int i;
avio_wb32(pb, 24); /* size */
ffio_wfourcc(pb, "ACLR");
ffio_wfourcc(pb, "ACLR");
ffio_wfourcc(pb, "0001");
if (track->enc->color_range == AVCOL_RANGE_MPEG) { /* Legal range (16-235) */
avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
} else { /* Full range (0-255) */
avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
}
avio_wb32(pb, 0); /* unknown */
avio_wb32(pb, 24); /* size */
ffio_wfourcc(pb, "APRG");
ffio_wfourcc(pb, "APRG");
ffio_wfourcc(pb, "0001");
avio_wb32(pb, 1); /* unknown */
avio_wb32(pb, 0); /* unknown */
avio_wb32(pb, 120); /* size */
ffio_wfourcc(pb, "ARES");
ffio_wfourcc(pb, "ARES");
ffio_wfourcc(pb, "0001");
avio_wb32(pb, AV_RB32(track->vos_data + 0x28)); /* dnxhd cid, some id ? */
avio_wb32(pb, track->enc->width);
/* values below are based on samples created with quicktime and avid codecs */
if (track->vos_data[5] & 2) { // interlaced
avio_wb32(pb, track->enc->height / 2);
avio_wb32(pb, 2); /* unknown */
avio_wb32(pb, 0); /* unknown */
avio_wb32(pb, 4); /* unknown */
} else {
avio_wb32(pb, track->enc->height);
avio_wb32(pb, 1); /* unknown */
avio_wb32(pb, 0); /* unknown */
if (track->enc->height == 1080)
avio_wb32(pb, 5); /* unknown */
else
avio_wb32(pb, 6); /* unknown */
}
/* padding */
for (i = 0; i < 10; i++)
avio_wb64(pb, 0);
/* extra padding for stsd needed */
avio_wb32(pb, 0);
return 0;
}
static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
return 0;
if (track->enc->codec_id == AV_CODEC_ID_H264) tag = MKTAG('a','v','c','1');
else if (track->enc->codec_id == AV_CODEC_ID_HEVC) tag = MKTAG('h','e','v','1');
else if (track->enc->codec_id == AV_CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
else if (track->enc->codec_id == AV_CODEC_ID_EAC3) tag = MKTAG('e','c','-','3');
else if (track->enc->codec_id == AV_CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
else if (track->enc->codec_id == AV_CODEC_ID_VC1) tag = MKTAG('v','c','-','1');
else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
else if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE) tag = MKTAG('m','p','4','s');
return tag;
}
static const AVCodecTag codec_ipod_tags[] = {
{ AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
{ AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ AV_CODEC_ID_ALAC, MKTAG('a','l','a','c') },
{ AV_CODEC_ID_AC3, MKTAG('a','c','-','3') },
{ AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
{ AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
{ AV_CODEC_ID_NONE, 0 },
};
static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
// keep original tag for subs, ipod supports both formats
if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
(tag == MKTAG('t', 'x', '3', 'g') ||
tag == MKTAG('t', 'e', 'x', 't'))))
tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
if (!av_match_ext(s->filename, "m4a") &&
!av_match_ext(s->filename, "m4b") &&
!av_match_ext(s->filename, "m4v"))
av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a, .m4v nor .m4b "
"Quicktime/Ipod might not play the file\n");
return tag;
}
static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag;
if (track->enc->width == 720) { /* SD */
if (track->enc->height == 480) { /* NTSC */
if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
else tag = MKTAG('d','v','c',' ');
}else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
else if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
else tag = MKTAG('d','v','p','p');
} else if (track->enc->height == 720) { /* HD 720 line */
if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
else tag = MKTAG('d','v','h','p');
} else if (track->enc->height == 1080) { /* HD 1080 line */
if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
else tag = MKTAG('d','v','h','6');
} else {
av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
return 0;
}
return tag;
}
static AVRational find_fps(AVFormatContext *s, AVStream *st)
{
AVRational rate = {st->codec->time_base.den, st->codec->time_base.num};
/* if the codec time base makes no sense, try to fallback on stream frame rate */
if (av_timecode_check_frame_rate(rate) < 0) {
av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",
rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);
rate = st->avg_frame_rate;
}
return rate;
}
static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
AVStream *st = track->st;
int rate = av_q2d(find_fps(s, st));
if (!tag)
tag = MKTAG('m', '2', 'v', '1'); //fallback tag
if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) {
if (track->enc->width == 1280 && track->enc->height == 720) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('x','d','v','4');
else if (rate == 25) tag = MKTAG('x','d','v','5');
else if (rate == 30) tag = MKTAG('x','d','v','1');
else if (rate == 50) tag = MKTAG('x','d','v','a');
else if (rate == 60) tag = MKTAG('x','d','v','9');
}
} else if (track->enc->width == 1440 && track->enc->height == 1080) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('x','d','v','6');
else if (rate == 25) tag = MKTAG('x','d','v','7');
else if (rate == 30) tag = MKTAG('x','d','v','8');
} else {
if (rate == 25) tag = MKTAG('x','d','v','3');
else if (rate == 30) tag = MKTAG('x','d','v','2');
}
} else if (track->enc->width == 1920 && track->enc->height == 1080) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('x','d','v','d');
else if (rate == 25) tag = MKTAG('x','d','v','e');
else if (rate == 30) tag = MKTAG('x','d','v','f');
} else {
if (rate == 25) tag = MKTAG('x','d','v','c');
else if (rate == 30) tag = MKTAG('x','d','v','b');
}
}
} else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
if (track->enc->width == 1280 && track->enc->height == 720) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('x','d','5','4');
else if (rate == 25) tag = MKTAG('x','d','5','5');
else if (rate == 30) tag = MKTAG('x','d','5','1');
else if (rate == 50) tag = MKTAG('x','d','5','a');
else if (rate == 60) tag = MKTAG('x','d','5','9');
}
} else if (track->enc->width == 1920 && track->enc->height == 1080) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('x','d','5','d');
else if (rate == 25) tag = MKTAG('x','d','5','e');
else if (rate == 30) tag = MKTAG('x','d','5','f');
} else {
if (rate == 25) tag = MKTAG('x','d','5','c');
else if (rate == 30) tag = MKTAG('x','d','5','b');
}
}
}
return tag;
}
static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
AVStream *st = track->st;
int rate = av_q2d(find_fps(s, st));
if (!tag)
tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P10) {
if (track->enc->width == 960 && track->enc->height == 720) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('a','i','5','p');
else if (rate == 25) tag = MKTAG('a','i','5','q');
else if (rate == 30) tag = MKTAG('a','i','5','p');
else if (rate == 50) tag = MKTAG('a','i','5','q');
else if (rate == 60) tag = MKTAG('a','i','5','p');
}
} else if (track->enc->width == 1440 && track->enc->height == 1080) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('a','i','5','3');
else if (rate == 25) tag = MKTAG('a','i','5','2');
else if (rate == 30) tag = MKTAG('a','i','5','3');
} else {
if (rate == 50) tag = MKTAG('a','i','5','5');
else if (rate == 60) tag = MKTAG('a','i','5','6');
}
}
} else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P10) {
if (track->enc->width == 1280 && track->enc->height == 720) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('a','i','1','p');
else if (rate == 25) tag = MKTAG('a','i','1','q');
else if (rate == 30) tag = MKTAG('a','i','1','p');
else if (rate == 50) tag = MKTAG('a','i','1','q');
else if (rate == 60) tag = MKTAG('a','i','1','p');
}
} else if (track->enc->width == 1920 && track->enc->height == 1080) {
if (!interlaced) {
if (rate == 24) tag = MKTAG('a','i','1','3');
else if (rate == 25) tag = MKTAG('a','i','1','2');
else if (rate == 30) tag = MKTAG('a','i','1','3');
} else {
if (rate == 25) tag = MKTAG('a','i','1','5');
else if (rate == 50) tag = MKTAG('a','i','1','5');
else if (rate == 60) tag = MKTAG('a','i','1','6');
}
} else if ( track->enc->width == 4096 && track->enc->height == 2160
|| track->enc->width == 3840 && track->enc->height == 2160) {
tag = MKTAG('a','i','v','x');
}
}
return tag;
}
static const struct {
enum AVPixelFormat pix_fmt;
uint32_t tag;
unsigned bps;
} mov_pix_fmt_tags[] = {
{ AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
{ AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
{ AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
{ AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
{ AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
{ AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
{ AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
{ AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
{ AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
{ AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
{ AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
{ AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
{ AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
{ AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
{ AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
};
static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
int i;
enum AVPixelFormat pix_fmt;
for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
tag = mov_pix_fmt_tags[i].tag;
track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
if (track->enc->codec_tag == mov_pix_fmt_tags[i].tag)
break;
}
}
pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_mov,
track->enc->bits_per_coded_sample);
if (tag == MKTAG('r','a','w',' ') &&
track->enc->pix_fmt != pix_fmt &&
track->enc->pix_fmt != AV_PIX_FMT_NONE)
av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
av_get_pix_fmt_name(track->enc->pix_fmt));
return tag;
}
static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
(track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
track->enc->codec_id == AV_CODEC_ID_H263 ||
track->enc->codec_id == AV_CODEC_ID_H264 ||
track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
tag = mov_get_dv_codec_tag(s, track);
else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
tag = mov_get_rawvideo_codec_tag(s, track);
else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO)
tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
else if (track->enc->codec_id == AV_CODEC_ID_H264)
tag = mov_get_h264_codec_tag(s, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->enc->codec_id);
if (!tag) { // if no mac fcc found, try with Microsoft tags
tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
if (tag)
av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
"the file may be unplayable!\n");
}
} else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->enc->codec_id);
if (!tag) { // if no mac fcc found, try with Microsoft tags
int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
if (ms_tag) {
tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
"the file may be unplayable!\n");
}
}
} else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
}
return tag;
}
static const AVCodecTag codec_3gp_tags[] = {
{ AV_CODEC_ID_H263, MKTAG('s','2','6','3') },
{ AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
{ AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ AV_CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
{ AV_CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
{ AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
{ AV_CODEC_ID_NONE, 0 },
};
static const AVCodecTag codec_f4v_tags[] = { // XXX: add GIF/PNG/JPEG?
{ AV_CODEC_ID_MP3, MKTAG('.','m','p','3') },
{ AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
{ AV_CODEC_ID_VP6A, MKTAG('V','P','6','A') },
{ AV_CODEC_ID_VP6F, MKTAG('V','P','6','F') },
{ AV_CODEC_ID_NONE, 0 },
};
static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag;
if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
tag = mp4_get_codec_tag(s, track);
else if (track->mode == MODE_ISM) {
tag = mp4_get_codec_tag(s, track);
if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
tag = MKTAG('w', 'm', 'a', ' ');
} else if (track->mode == MODE_IPOD)
tag = ipod_get_codec_tag(s, track);
else if (track->mode & MODE_3GP)
tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
else if (track->mode == MODE_F4V)
tag = ff_codec_get_tag(codec_f4v_tags, track->enc->codec_id);
if (tag == 0){
tag = mov_get_codec_tag(s, track);
}
return tag;
}
/** Write uuid atom.
* Needed to make file play in iPods running newest firmware
* goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
*/
static int mov_write_uuid_tag_ipod(AVIOContext *pb)
{
avio_wb32(pb, 28);
ffio_wfourcc(pb, "uuid");
avio_wb32(pb, 0x6b6840f2);
avio_wb32(pb, 0x5f244fc5);
avio_wb32(pb, 0xba39a51b);
avio_wb32(pb, 0xcf0323f3);
avio_wb32(pb, 0x0);
return 28;
}
static const uint16_t fiel_data[] = {
0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
};
static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
{
unsigned mov_field_order = 0;
if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
mov_field_order = fiel_data[track->enc->field_order];
else
return 0;
avio_wb32(pb, 10);
ffio_wfourcc(pb, "fiel");
avio_wb16(pb, mov_field_order);
return 10;
}
static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
avio_wl32(pb, track->tag); // store it byteswapped
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index */
if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
mov_write_esds_tag(pb, track);
else if (track->enc->extradata_size)
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
return update_size(pb, pos);
}
static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
{
AVRational sar;
av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
track->enc->sample_aspect_ratio.den, INT_MAX);
avio_wb32(pb, 16);
ffio_wfourcc(pb, "pasp");
avio_wb32(pb, sar.num);
avio_wb32(pb, sar.den);
return 16;
}
static void find_compressor(char * compressor_name, int len, MOVTrack *track)
{
AVDictionaryEntry *encoder;
int xdcam_res = (track->enc->width == 1280 && track->enc->height == 720)
|| (track->enc->width == 1440 && track->enc->height == 1080)
|| (track->enc->width == 1920 && track->enc->height == 1080);
if (track->mode == MODE_MOV &&
(encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
av_strlcpy(compressor_name, encoder->value, 32);
} else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
AVStream *st = track->st;
int rate = av_q2d(find_fps(NULL, st));
av_strlcatf(compressor_name, len, "XDCAM");
if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
av_strlcatf(compressor_name, len, " HD422");
} else if(track->enc->width == 1440) {
av_strlcatf(compressor_name, len, " HD");
} else
av_strlcatf(compressor_name, len, " EX");
av_strlcatf(compressor_name, len, " %d%c", track->enc->height, interlaced ? 'i' : 'p');
av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
}
}
static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
char compressor_name[32] = { 0 };
avio_wb32(pb, 0); /* size */
avio_wl32(pb, track->tag); // store it byteswapped
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index */
avio_wb16(pb, 0); /* Codec stream version */
avio_wb16(pb, 0); /* Codec stream revision (=0) */
if (track->mode == MODE_MOV) {
ffio_wfourcc(pb, "FFMP"); /* Vendor */
if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO) {
avio_wb32(pb, 0); /* Temporal Quality */
avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
} else {
avio_wb32(pb, 0x200); /* Temporal Quality = normal */
avio_wb32(pb, 0x200); /* Spatial Quality = normal */
}
} else {
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 0); /* Reserved */
}
avio_wb16(pb, track->enc->width); /* Video width */
avio_wb16(pb, track->height); /* Video height */
avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
avio_wb32(pb, 0); /* Data size (= 0) */
avio_wb16(pb, 1); /* Frame count (= 1) */
/* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
find_compressor(compressor_name, 32, track);
avio_w8(pb, strlen(compressor_name));
avio_write(pb, compressor_name, 31);
if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
avio_wb16(pb, track->enc->bits_per_coded_sample);
else
avio_wb16(pb, 0x18); /* Reserved */
avio_wb16(pb, 0xffff); /* Reserved */
if (track->tag == MKTAG('m','p','4','v'))
mov_write_esds_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_H263)
mov_write_d263_tag(pb);
else if (track->enc->codec_id == AV_CODEC_ID_AVUI ||
track->enc->codec_id == AV_CODEC_ID_SVQ3) {
mov_write_extradata_tag(pb, track);
avio_wb32(pb, 0);
} else if (track->enc->codec_id == AV_CODEC_ID_DNXHD)
mov_write_avid_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_HEVC)
mov_write_hvcc_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
mov_write_avcc_tag(pb, track);
if (track->mode == MODE_IPOD)
mov_write_uuid_tag_ipod(pb);
} else if (track->enc->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
mov_write_dvc1_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_VP6F ||
track->enc->codec_id == AV_CODEC_ID_VP6A) {
/* Don't write any potential extradata here - the cropping
* is signalled via the normal width/height fields. */
} else if (track->vos_len > 0)
mov_write_glbl_tag(pb, track);
if (track->enc->codec_id != AV_CODEC_ID_H264 &&
track->enc->codec_id != AV_CODEC_ID_MPEG4 &&
track->enc->codec_id != AV_CODEC_ID_DNXHD)
if (track->enc->field_order != AV_FIELD_UNKNOWN)
mov_write_fiel_tag(pb, track);
if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
mov_write_pasp_tag(pb, track);
}
return update_size(pb, pos);
}
static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "rtp ");
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index */
avio_wb16(pb, 1); /* Hint track version */
avio_wb16(pb, 1); /* Highest compatible version */
avio_wb32(pb, track->max_packet_size); /* Max packet size */
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "tims");
avio_wb32(pb, track->timescale);
return update_size(pb, pos);
}
static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
{
uint64_t str_size =strlen(reel_name);
int64_t pos = avio_tell(pb);
if (str_size >= UINT16_MAX){
av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
avio_wb16(pb, 0);
return AVERROR(EINVAL);
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "name"); /* Data format */
avio_wb16(pb, str_size); /* string size */
avio_wb16(pb, track->language); /* langcode */
avio_write(pb, reel_name, str_size); /* reel name */
return update_size(pb,pos);
}
static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
#if 1
int frame_duration = av_rescale(track->timescale, track->enc->time_base.num, track->enc->time_base.den);
int nb_frames = 1.0/av_q2d(track->enc->time_base) + 0.5;
AVDictionaryEntry *t = NULL;
if (nb_frames > 255) {
av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
return AVERROR(EINVAL);
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tmcd"); /* Data format */
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 1); /* Data reference index */
avio_wb32(pb, 0); /* Flags */
avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
avio_wb32(pb, track->timescale); /* Timescale */
avio_wb32(pb, frame_duration); /* Frame duration */
avio_w8(pb, nb_frames); /* Number of frames */
avio_w8(pb, 0); /* Reserved */
if (track->st)
t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
if (t && utf8len(t->value))
mov_write_source_reference_tag(pb, track, t->value);
else
avio_wb16(pb, 0); /* zero size */
#else
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tmcd"); /* Data format */
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 1); /* Data reference index */
if (track->enc->extradata_size)
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
#endif
return update_size(pb, pos);
}
static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stsd");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, 1); /* entry count */
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
mov_write_video_tag(pb, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
mov_write_audio_tag(pb, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
mov_write_subtitle_tag(pb, track);
else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
mov_write_rtp_tag(pb, track);
else if (track->enc->codec_tag == MKTAG('t','m','c','d'))
mov_write_tmcd_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
{
MOVStts *ctts_entries;
uint32_t entries = 0;
uint32_t atom_size;
int i;
ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
ctts_entries[0].count = 1;
ctts_entries[0].duration = track->cluster[0].cts;
for (i = 1; i < track->entry; i++) {
if (track->cluster[i].cts == ctts_entries[entries].duration) {
ctts_entries[entries].count++; /* compress */
} else {
entries++;
ctts_entries[entries].duration = track->cluster[i].cts;
ctts_entries[entries].count = 1;
}
}
entries++; /* last one */
atom_size = 16 + (entries * 8);
avio_wb32(pb, atom_size); /* size */
ffio_wfourcc(pb, "ctts");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, entries); /* entry count */
for (i = 0; i < entries; i++) {
avio_wb32(pb, ctts_entries[i].count);
avio_wb32(pb, ctts_entries[i].duration);
}
av_free(ctts_entries);
return atom_size;
}
/* Time to sample atom */
static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
{
MOVStts *stts_entries;
uint32_t entries = -1;
uint32_t atom_size;
int i;
if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
stts_entries[0].count = track->sample_count;
stts_entries[0].duration = 1;
entries = 1;
} else {
stts_entries = track->entry ?
av_malloc_array(track->entry, sizeof(*stts_entries)) : /* worst case */
NULL;
for (i = 0; i < track->entry; i++) {
int duration = get_cluster_duration(track, i);
if (i && duration == stts_entries[entries].duration) {
stts_entries[entries].count++; /* compress */
} else {
entries++;
stts_entries[entries].duration = duration;
stts_entries[entries].count = 1;
}
}
entries++; /* last one */
}
atom_size = 16 + (entries * 8);
avio_wb32(pb, atom_size); /* size */
ffio_wfourcc(pb, "stts");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, entries); /* entry count */
for (i = 0; i < entries; i++) {
avio_wb32(pb, stts_entries[i].count);
avio_wb32(pb, stts_entries[i].duration);
}
av_free(stts_entries);
return atom_size;
}
static int mov_write_dref_tag(AVIOContext *pb)
{
avio_wb32(pb, 28); /* size */
ffio_wfourcc(pb, "dref");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, 1); /* entry count */
avio_wb32(pb, 0xc); /* size */
//FIXME add the alis and rsrc atom
ffio_wfourcc(pb, "url ");
avio_wb32(pb, 1); /* version & flags */
return 28;
}
static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stbl");
mov_write_stsd_tag(pb, track);
mov_write_stts_tag(pb, track);
if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
track->has_keyframes && track->has_keyframes < track->entry)
mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
track->flags & MOV_TRACK_CTTS)
mov_write_ctts_tag(pb, track);
mov_write_stsc_tag(pb, track);
mov_write_stsz_tag(pb, track);
mov_write_stco_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_dinf_tag(AVIOContext *pb)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "dinf");
mov_write_dref_tag(pb);
return update_size(pb, pos);
}
static int mov_write_nmhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 12);
ffio_wfourcc(pb, "nmhd");
avio_wb32(pb, 0);
return 12;
}
static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
const char *font = "Lucida Grande";
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
avio_wb32(pb, 0); /* version & flags */
avio_wb16(pb, 0); /* text font */
avio_wb16(pb, 0); /* text face */
avio_wb16(pb, 12); /* text size */
avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
avio_wb16(pb, 0x0000); /* text color (red) */
avio_wb16(pb, 0x0000); /* text color (green) */
avio_wb16(pb, 0x0000); /* text color (blue) */
avio_wb16(pb, 0xffff); /* background color (red) */
avio_wb16(pb, 0xffff); /* background color (green) */
avio_wb16(pb, 0xffff); /* background color (blue) */
avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
avio_write(pb, font, strlen(font)); /* font name */
return update_size(pb, pos);
}
static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "gmhd");
avio_wb32(pb, 0x18); /* gmin size */
ffio_wfourcc(pb, "gmin");/* generic media info */
avio_wb32(pb, 0); /* version & flags */
avio_wb16(pb, 0x40); /* graphics mode = */
avio_wb16(pb, 0x8000); /* opColor (r?) */
avio_wb16(pb, 0x8000); /* opColor (g?) */
avio_wb16(pb, 0x8000); /* opColor (b?) */
avio_wb16(pb, 0); /* balance */
avio_wb16(pb, 0); /* reserved */
/*
* This special text atom is required for
* Apple Quicktime chapters. The contents
* don't appear to be documented, so the
* bytes are copied verbatim.
*/
if (track->tag != MKTAG('c','6','0','8')) {
avio_wb32(pb, 0x2C); /* size */
ffio_wfourcc(pb, "text");
avio_wb16(pb, 0x01);
avio_wb32(pb, 0x00);
avio_wb32(pb, 0x00);
avio_wb32(pb, 0x00);
avio_wb32(pb, 0x01);
avio_wb32(pb, 0x00);
avio_wb32(pb, 0x00);
avio_wb32(pb, 0x00);
avio_wb32(pb, 0x00004000);
avio_wb16(pb, 0x0000);
}
if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
int64_t tmcd_pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tmcd");
mov_write_tcmi_tag(pb, track);
update_size(pb, tmcd_pos);
}
return update_size(pb, pos);
}
static int mov_write_smhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 16); /* size */
ffio_wfourcc(pb, "smhd");
avio_wb32(pb, 0); /* version & flags */
avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
avio_wb16(pb, 0); /* reserved */
return 16;
}
static int mov_write_vmhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 0x14); /* size (always 0x14) */
ffio_wfourcc(pb, "vmhd");
avio_wb32(pb, 0x01); /* version & flags */
avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
return 0x14;
}
static int is_clcp_track(MOVTrack *track)
{
return track->tag == MKTAG('c','7','0','8') ||
track->tag == MKTAG('c','6','0','8');
}
static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
{
const char *hdlr, *descr = NULL, *hdlr_type = NULL;
int64_t pos = avio_tell(pb);
hdlr = "dhlr";
hdlr_type = "url ";
descr = "DataHandler";
if (track) {
hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
hdlr_type = "vide";
descr = "VideoHandler";
} else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
hdlr_type = "soun";
descr = "SoundHandler";
} else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (is_clcp_track(track)) {
hdlr_type = "clcp";
descr = "ClosedCaptionHandler";
} else {
if (track->tag == MKTAG('t','x','3','g')) {
hdlr_type = "sbtl";
} else if (track->tag == MKTAG('m','p','4','s')) {
hdlr_type = "subp";
} else {
hdlr_type = "text";
}
descr = "SubtitleHandler";
}
} else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
hdlr_type = "hint";
descr = "HintHandler";
} else if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
hdlr_type = "tmcd";
descr = "TimeCodeHandler";
} else {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
track->enc->codec_tag);
av_log(track->enc, AV_LOG_WARNING,
"Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
tag_buf, track->enc->codec_tag);
}
if (track->st) {
// hdlr.name is used by some players to identify the content title
// of the track. So if an alternate handler description is
// specified, use it.
AVDictionaryEntry *t;
t = av_dict_get(track->st->metadata, "handler", NULL, 0);
if (t && utf8len(t->value))
descr = t->value;
}
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "hdlr");
avio_wb32(pb, 0); /* Version & flags */
avio_write(pb, hdlr, 4); /* handler */
ffio_wfourcc(pb, hdlr_type); /* handler type */
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
if (!track || track->mode == MODE_MOV)
avio_w8(pb, strlen(descr)); /* pascal string */
avio_write(pb, descr, strlen(descr)); /* handler description */
if (track && track->mode != MODE_MOV)
avio_w8(pb, 0); /* c string */
return update_size(pb, pos);
}
static int mov_write_hmhd_tag(AVIOContext *pb)
{
/* This atom must be present, but leaving the values at zero
* seems harmless. */
avio_wb32(pb, 28); /* size */
ffio_wfourcc(pb, "hmhd");
avio_wb32(pb, 0); /* version, flags */
avio_wb16(pb, 0); /* maxPDUsize */
avio_wb16(pb, 0); /* avgPDUsize */
avio_wb32(pb, 0); /* maxbitrate */
avio_wb32(pb, 0); /* avgbitrate */
avio_wb32(pb, 0); /* reserved */
return 28;
}
static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "minf");
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
mov_write_vmhd_tag(pb);
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
mov_write_smhd_tag(pb);
else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
mov_write_gmhd_tag(pb, track);
} else {
mov_write_nmhd_tag(pb);
}
} else if (track->tag == MKTAG('r','t','p',' ')) {
mov_write_hmhd_tag(pb);
} else if (track->tag == MKTAG('t','m','c','d')) {
mov_write_gmhd_tag(pb, track);
}
if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
mov_write_hdlr_tag(pb, NULL);
mov_write_dinf_tag(pb);
mov_write_stbl_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int version = track->track_duration < INT32_MAX ? 0 : 1;
if (track->mode == MODE_ISM)
version = 1;
(version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
ffio_wfourcc(pb, "mdhd");
avio_w8(pb, version);
avio_wb24(pb, 0); /* flags */
if (version == 1) {
avio_wb64(pb, track->time);
avio_wb64(pb, track->time);
} else {
avio_wb32(pb, track->time); /* creation time */
avio_wb32(pb, track->time); /* modification time */
}
avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
if (!track->entry && mov->mode == MODE_ISM)
(version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
else if (!track->entry)
(version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
else
(version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
avio_wb16(pb, track->language); /* language */
avio_wb16(pb, 0); /* reserved (quality) */
if (version != 0 && track->mode == MODE_MOV) {
av_log(NULL, AV_LOG_ERROR,
"FATAL error, file duration too long for timebase, this file will not be\n"
"playable with quicktime. Choose a different timebase or a different\n"
"container format\n");
}
return 32;
}
static int mov_write_mdia_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "mdia");
mov_write_mdhd_tag(pb, mov, track);
mov_write_hdlr_tag(pb, track);
mov_write_minf_tag(pb, track);
return update_size(pb, pos);
}
/* transformation matrix
|a b u|
|c d v|
|tx ty w| */
static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
int16_t d, int16_t tx, int16_t ty)
{
avio_wb32(pb, a << 16); /* 16.16 format */
avio_wb32(pb, b << 16); /* 16.16 format */
avio_wb32(pb, 0); /* u in 2.30 format */
avio_wb32(pb, c << 16); /* 16.16 format */
avio_wb32(pb, d << 16); /* 16.16 format */
avio_wb32(pb, 0); /* v in 2.30 format */
avio_wb32(pb, tx << 16); /* 16.16 format */
avio_wb32(pb, ty << 16); /* 16.16 format */
avio_wb32(pb, 1 << 30); /* w in 2.30 format */
}
static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, AVStream *st)
{
int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
track->timescale, AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
int flags = MOV_TKHD_FLAG_IN_MOVIE;
int rotation = 0;
int group = 0;
if (st) {
if (mov->per_stream_grouping)
group = st->index;
else
group = st->codec->codec_type;
}
if (track->flags & MOV_TRACK_ENABLED)
flags |= MOV_TKHD_FLAG_ENABLED;
if (track->mode == MODE_ISM)
version = 1;
(version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
ffio_wfourcc(pb, "tkhd");
avio_w8(pb, version);
avio_wb24(pb, flags);
if (version == 1) {
avio_wb64(pb, track->time);
avio_wb64(pb, track->time);
} else {
avio_wb32(pb, track->time); /* creation time */
avio_wb32(pb, track->time); /* modification time */
}
avio_wb32(pb, track->track_id); /* track-id */
avio_wb32(pb, 0); /* reserved */
if (!track->entry && mov->mode == MODE_ISM)
(version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
else if (!track->entry)
(version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
else
(version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb16(pb, 0); /* layer */
avio_wb16(pb, group); /* alternate group) */
/* Volume, only for audio */
if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
avio_wb16(pb, 0x0100);
else
avio_wb16(pb, 0);
avio_wb16(pb, 0); /* reserved */
/* Matrix structure */
if (st && st->metadata) {
AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
rotation = (rot && rot->value) ? atoi(rot->value) : 0;
}
if (rotation == 90) {
write_matrix(pb, 0, 1, -1, 0, track->enc->height, 0);
} else if (rotation == 180) {
write_matrix(pb, -1, 0, 0, -1, track->enc->width, track->enc->height);
} else if (rotation == 270) {
write_matrix(pb, 0, -1, 1, 0, 0, track->enc->width);
} else {
write_matrix(pb, 1, 0, 0, 1, 0, 0);
}
/* Track width and height, for visual only */
if (st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
if (track->mode == MODE_MOV) {
avio_wb32(pb, track->enc->width << 16);
avio_wb32(pb, track->height << 16);
} else {
double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
if (!sample_aspect_ratio || track->height != track->enc->height)
sample_aspect_ratio = 1;
avio_wb32(pb, sample_aspect_ratio * track->enc->width * 0x10000);
avio_wb32(pb, track->height * 0x10000);
}
} else {
avio_wb32(pb, 0);
avio_wb32(pb, 0);
}
return 0x5c;
}
static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
{
int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
track->enc->sample_aspect_ratio.den);
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tapt");
avio_wb32(pb, 20);
ffio_wfourcc(pb, "clef");
avio_wb32(pb, 0);
avio_wb32(pb, width << 16);
avio_wb32(pb, track->enc->height << 16);
avio_wb32(pb, 20);
ffio_wfourcc(pb, "prof");
avio_wb32(pb, 0);
avio_wb32(pb, width << 16);
avio_wb32(pb, track->enc->height << 16);
avio_wb32(pb, 20);
ffio_wfourcc(pb, "enof");
avio_wb32(pb, 0);
avio_wb32(pb, track->enc->width << 16);
avio_wb32(pb, track->enc->height << 16);
return update_size(pb, pos);
}
// This box seems important for the psp playback ... without it the movie seems to hang
static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
track->timescale, AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
int entry_size, entry_count, size;
int64_t delay, start_ct = track->cluster[0].cts;
delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
track->timescale, AV_ROUND_DOWN);
version |= delay < INT32_MAX ? 0 : 1;
entry_size = (version == 1) ? 20 : 12;
entry_count = 1 + (delay > 0);
size = 24 + entry_count * entry_size;
/* write the atom data */
avio_wb32(pb, size);
ffio_wfourcc(pb, "edts");
avio_wb32(pb, size - 8);
ffio_wfourcc(pb, "elst");
avio_w8(pb, version);
avio_wb24(pb, 0); /* flags */
avio_wb32(pb, entry_count);
if (delay > 0) { /* add an empty edit to delay presentation */
/* In the positive delay case, the delay includes the cts
* offset, and the second edit list entry below trims out
* the same amount from the actual content. This makes sure
* that the offsetted last sample is included in the edit
* list duration as well. */
if (version == 1) {
avio_wb64(pb, delay);
avio_wb64(pb, -1);
} else {
avio_wb32(pb, delay);
avio_wb32(pb, -1);
}
avio_wb32(pb, 0x00010000);
} else {
/* Avoid accidentally ending up with start_ct = -1 which has got a
* special meaning. Normally start_ct should end up positive or zero
* here, but use FFMIN in case dts is a a small positive integer
* rounded to 0 when represented in MOV_TIMESCALE units. */
av_assert0(av_rescale_rnd(track->cluster[0].dts, MOV_TIMESCALE, track->timescale, AV_ROUND_DOWN) <= 0);
start_ct = -FFMIN(track->cluster[0].dts, 0);
/* Note, this delay is calculated from the pts of the first sample,
* ensuring that we don't reduce the duration for cases with
* dts<0 pts=0. */
duration += delay;
}
/* For fragmented files, we don't know the full length yet. Setting
* duration to 0 allows us to only specify the offset, including
* the rest of the content (from all future fragments) without specifying
* an explicit duration. */
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
duration = 0;
/* duration */
if (version == 1) {
avio_wb64(pb, duration);
avio_wb64(pb, start_ct);
} else {
avio_wb32(pb, duration);
avio_wb32(pb, start_ct);
}
avio_wb32(pb, 0x00010000);
return size;
}
static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, 20); // size
ffio_wfourcc(pb, "tref");
avio_wb32(pb, 12); // size (subatom)
avio_wl32(pb, track->tref_tag);
avio_wb32(pb, track->tref_id);
return 20;
}
// goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
{
avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
ffio_wfourcc(pb, "uuid");
ffio_wfourcc(pb, "USMT");
avio_wb32(pb, 0x21d24fce);
avio_wb32(pb, 0xbb88695c);
avio_wb32(pb, 0xfac9c740);
avio_wb32(pb, 0x1c); // another size here!
ffio_wfourcc(pb, "MTDT");
avio_wb32(pb, 0x00010012);
avio_wb32(pb, 0x0a);
avio_wb32(pb, 0x55c40000);
avio_wb32(pb, 0x1);
avio_wb32(pb, 0x0);
return 0x34;
}
static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
{
AVFormatContext *ctx = track->rtp_ctx;
char buf[1000] = "";
int len;
ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
NULL, NULL, 0, 0, ctx);
av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
len = strlen(buf);
avio_wb32(pb, len + 24);
ffio_wfourcc(pb, "udta");
avio_wb32(pb, len + 16);
ffio_wfourcc(pb, "hnti");
avio_wb32(pb, len + 8);
ffio_wfourcc(pb, "sdp ");
avio_write(pb, buf, len);
return len + 24;
}
static int mov_write_track_metadata(AVIOContext *pb, AVStream *st,
const char *tag, const char *str)
{
int64_t pos = avio_tell(pb);
AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
if (!t || !utf8len(t->value))
return 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, tag); /* type */
avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
return update_size(pb, pos);
}
static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVStream *st)
{
AVIOContext *pb_buf;
int ret, size;
uint8_t *buf;
if (!st || mov->fc->flags & AVFMT_FLAG_BITEXACT)
return 0;
ret = avio_open_dyn_buf(&pb_buf);
if (ret < 0)
return ret;
if (mov->mode & MODE_MP4)
mov_write_track_metadata(pb_buf, st, "name", "title");
if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
avio_wb32(pb, size + 8);
ffio_wfourcc(pb, "udta");
avio_write(pb, buf, size);
}
av_free(buf);
return 0;
}
static int mov_write_trak_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, AVStream *st)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "trak");
mov_write_tkhd_tag(pb, mov, track, st);
av_assert2(mov->use_editlist >= 0);
if (track->entry) {
if (mov->use_editlist)
mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
av_log(mov->fc, AV_LOG_WARNING,
"Not writing any edit list even though one would have been required\n");
}
if (track->tref_tag)
mov_write_tref_tag(pb, track);
mov_write_mdia_tag(pb, mov, track);
if (track->mode == MODE_PSP)
mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
if (track->tag == MKTAG('r','t','p',' '))
mov_write_udta_sdp(pb, track);
if (track->mode == MODE_MOV) {
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
mov_write_tapt_tag(pb, track);
}
}
if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
mov_write_tapt_tag(pb, track);
}
}
mov_write_track_udta_tag(pb, mov, st);
return update_size(pb, pos);
}
static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int i, has_audio = 0, has_video = 0;
int64_t pos = avio_tell(pb);
int audio_profile = mov->iods_audio_profile;
int video_profile = mov->iods_video_profile;
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
}
}
if (audio_profile < 0)
audio_profile = 0xFF - has_audio;
if (video_profile < 0)
video_profile = 0xFF - has_video;
avio_wb32(pb, 0x0); /* size */
ffio_wfourcc(pb, "iods");
avio_wb32(pb, 0); /* version & flags */
put_descr(pb, 0x10, 7);
avio_wb16(pb, 0x004f);
avio_w8(pb, 0xff);
avio_w8(pb, 0xff);
avio_w8(pb, audio_profile);
avio_w8(pb, video_profile);
avio_w8(pb, 0xff);
return update_size(pb, pos);
}
static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, 0x20); /* size */
ffio_wfourcc(pb, "trex");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, track->track_id); /* track ID */
avio_wb32(pb, 1); /* default sample description index */
avio_wb32(pb, 0); /* default sample duration */
avio_wb32(pb, 0); /* default sample size */
avio_wb32(pb, 0); /* default sample flags */
return 0;
}
static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0x0); /* size */
ffio_wfourcc(pb, "mvex");
for (i = 0; i < mov->nb_streams; i++)
mov_write_trex_tag(pb, &mov->tracks[i]);
return update_size(pb, pos);
}
static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int max_track_id = 1, i;
int64_t max_track_len_temp, max_track_len = 0;
int version;
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
MOV_TIMESCALE,
mov->tracks[i].timescale,
AV_ROUND_UP);
if (max_track_len < max_track_len_temp)
max_track_len = max_track_len_temp;
if (max_track_id < mov->tracks[i].track_id)
max_track_id = mov->tracks[i].track_id;
}
}
version = max_track_len < UINT32_MAX ? 0 : 1;
avio_wb32(pb, version == 1 ? 120 : 108); /* size */
ffio_wfourcc(pb, "mvhd");
avio_w8(pb, version);
avio_wb24(pb, 0); /* flags */
if (version == 1) {
avio_wb64(pb, mov->time);
avio_wb64(pb, mov->time);
} else {
avio_wb32(pb, mov->time); /* creation time */
avio_wb32(pb, mov->time); /* modification time */
}
avio_wb32(pb, MOV_TIMESCALE);
(version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
avio_wb16(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
/* Matrix structure */
write_matrix(pb, 1, 0, 0, 1, 0, 0);
avio_wb32(pb, 0); /* reserved (preview time) */
avio_wb32(pb, 0); /* reserved (preview duration) */
avio_wb32(pb, 0); /* reserved (poster time) */
avio_wb32(pb, 0); /* reserved (selection time) */
avio_wb32(pb, 0); /* reserved (selection duration) */
avio_wb32(pb, 0); /* reserved (current time) */
avio_wb32(pb, max_track_id + 1); /* Next track id */
return 0x6c;
}
static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
avio_wb32(pb, 33); /* size */
ffio_wfourcc(pb, "hdlr");
avio_wb32(pb, 0);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "mdir");
ffio_wfourcc(pb, "appl");
avio_wb32(pb, 0);
avio_wb32(pb, 0);
avio_w8(pb, 0);
return 33;
}
/* helper function to write a data tag with the specified string as data */
static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
{
if (long_style) {
int size = 16 + strlen(data);
avio_wb32(pb, size); /* size */
ffio_wfourcc(pb, "data");
avio_wb32(pb, 1);
avio_wb32(pb, 0);
avio_write(pb, data, strlen(data));
return size;
} else {
if (!lang)
lang = ff_mov_iso639_to_lang("und", 1);
avio_wb16(pb, strlen(data)); /* string length */
avio_wb16(pb, lang);
avio_write(pb, data, strlen(data));
return strlen(data) + 4;
}
}
static int mov_write_string_tag(AVIOContext *pb, const char *name,
const char *value, int lang, int long_style)
{
int size = 0;
if (value && value[0]) {
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, name);
mov_write_string_data_tag(pb, value, lang, long_style);
size = update_size(pb, pos);
}
return size;
}
static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
const char *name, const char *tag,
int long_style)
{
int l, lang = 0, len, len2;
AVDictionaryEntry *t, *t2 = NULL;
char tag2[16];
if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
return 0;
len = strlen(t->key);
snprintf(tag2, sizeof(tag2), "%s-", tag);
while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
len2 = strlen(t2->key);
if (len2 == len + 4 && !strcmp(t->value, t2->value)
&& (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
lang = l;
break;
}
}
return mov_write_string_tag(pb, name, t->value, lang, long_style);
}
/* iTunes bpm number */
static int mov_write_tmpo_tag(AVIOContext *pb, AVFormatContext *s)
{
AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
int size = 0, tmpo = t ? atoi(t->value) : 0;
if (tmpo) {
size = 26;
avio_wb32(pb, size);
ffio_wfourcc(pb, "tmpo");
avio_wb32(pb, size-8); /* size */
ffio_wfourcc(pb, "data");
avio_wb32(pb, 0x15); //type specifier
avio_wb32(pb, 0);
avio_wb16(pb, tmpo); // data
}
return size;
}
/* iTunes track or disc number */
static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s, int disc)
{
AVDictionaryEntry *t = av_dict_get(s->metadata,
disc ? "disc" : "track",
NULL, 0);
int size = 0, track = t ? atoi(t->value) : 0;
if (track) {
int tracks = 0;
char *slash = strchr(t->value, '/');
if (slash)
tracks = atoi(slash + 1);
avio_wb32(pb, 32); /* size */
ffio_wfourcc(pb, disc ? "disk" : "trkn");
avio_wb32(pb, 24); /* size */
ffio_wfourcc(pb, "data");
avio_wb32(pb, 0); // 8 bytes empty
avio_wb32(pb, 0);
avio_wb16(pb, 0); // empty
avio_wb16(pb, track); // track / disc number
avio_wb16(pb, tracks); // total track / disc number
avio_wb16(pb, 0); // empty
size = 32;
}
return size;
}
static int mov_write_int8_metadata(AVFormatContext *s, AVIOContext *pb,
const char *name, const char *tag,
int len)
{
AVDictionaryEntry *t = NULL;
uint8_t num;
int size = 24 + len;
if (len != 1 && len != 4)
return -1;
if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
return 0;
num = atoi(t->value);
avio_wb32(pb, size);
ffio_wfourcc(pb, name);
avio_wb32(pb, size - 8);
ffio_wfourcc(pb, "data");
avio_wb32(pb, 0x15);
avio_wb32(pb, 0);
if (len==4) avio_wb32(pb, num);
else avio_w8 (pb, num);
return size;
}
/* iTunes meta data list */
static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "ilst");
mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
mov_write_string_metadata(s, pb, "\251day", "date" , 1);
if (!mov->exact &&
!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1))
mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
mov_write_string_metadata(s, pb, "desc", "description",1);
mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
mov_write_string_metadata(s, pb, "tven", "episode_id",1);
mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
mov_write_int8_metadata (s, pb, "stik", "media_type",1);
mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
mov_write_trkn_tag(pb, mov, s, 0); // track number
mov_write_trkn_tag(pb, mov, s, 1); // disc number
mov_write_tmpo_tag(pb, s);
return update_size(pb, pos);
}
/* iTunes meta data tag */
static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int size = 0;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "meta");
avio_wb32(pb, 0);
mov_write_itunes_hdlr_tag(pb, mov, s);
mov_write_ilst_tag(pb, mov, s);
size = update_size(pb, pos);
return size;
}
static int mov_write_raw_metadata_tag(AVFormatContext *s, AVIOContext *pb,
const char *name, const char *key)
{
int len;
AVDictionaryEntry *t;
if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
return 0;
len = strlen(t->value);
if (len > 0) {
int size = len + 8;
avio_wb32(pb, size);
ffio_wfourcc(pb, name);
avio_write(pb, t->value, len);
return size;
}
return 0;
}
static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
{
int val;
while (*b) {
GET_UTF8(val, *b++, return -1;)
avio_wb16(pb, val);
}
avio_wb16(pb, 0x00);
return 0;
}
static uint16_t language_code(const char *str)
{
return (((str[0] - 0x60) & 0x1F) << 10) +
(((str[1] - 0x60) & 0x1F) << 5) +
(( str[2] - 0x60) & 0x1F);
}
static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
const char *tag, const char *str)
{
int64_t pos = avio_tell(pb);
AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
if (!t || !utf8len(t->value))
return 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, tag); /* type */
avio_wb32(pb, 0); /* version + flags */
if (!strcmp(tag, "yrrc"))
avio_wb16(pb, atoi(t->value));
else {
avio_wb16(pb, language_code("eng")); /* language */
avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
if (!strcmp(tag, "albm") &&
(t = av_dict_get(s->metadata, "track", NULL, 0)))
avio_w8(pb, atoi(t->value));
}
return update_size(pb, pos);
}
static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
{
int64_t pos = avio_tell(pb);
int i, nb_chapters = FFMIN(s->nb_chapters, 255);
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, "chpl");
avio_wb32(pb, 0x01000000); // version + flags
avio_wb32(pb, 0); // unknown
avio_w8(pb, nb_chapters);
for (i = 0; i < nb_chapters; i++) {
AVChapter *c = s->chapters[i];
AVDictionaryEntry *t;
avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
int len = FFMIN(strlen(t->value), 255);
avio_w8(pb, len);
avio_write(pb, t->value, len);
} else
avio_w8(pb, 0);
}
return update_size(pb, pos);
}
static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
AVIOContext *pb_buf;
int ret, size;
uint8_t *buf;
ret = avio_open_dyn_buf(&pb_buf);
if (ret < 0)
return ret;
if (mov->mode & MODE_3GP) {
mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
} else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
// currently ignored by mov.c
mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
// add support for libquicktime, this atom is also actually read by mov.c
mov_write_string_metadata(s, pb_buf, "\251cmt", "comment", 0);
mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
} else {
/* iTunes meta data */
mov_write_meta_tag(pb_buf, mov, s);
}
if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
mov_write_chpl_tag(pb_buf, s);
if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
avio_wb32(pb, size + 8);
ffio_wfourcc(pb, "udta");
avio_write(pb, buf, size);
}
av_free(buf);
return 0;
}
static void mov_write_psp_udta_tag(AVIOContext *pb,
const char *str, const char *lang, int type)
{
int len = utf8len(str) + 1;
if (len <= 0)
return;
avio_wb16(pb, len * 2 + 10); /* size */
avio_wb32(pb, type); /* type */
avio_wb16(pb, language_code(lang)); /* language */
avio_wb16(pb, 0x01); /* ? */
ascii_to_wc(pb, str);
}
static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
int64_t pos, pos2;
if (title) {
pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "uuid");
ffio_wfourcc(pb, "USMT");
avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
avio_wb32(pb, 0xbb88695c);
avio_wb32(pb, 0xfac9c740);
pos2 = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "MTDT");
avio_wb16(pb, 4);
// ?
avio_wb16(pb, 0x0C); /* size */
avio_wb32(pb, 0x0B); /* type */
avio_wb16(pb, language_code("und")); /* language */
avio_wb16(pb, 0x0); /* ? */
avio_wb16(pb, 0x021C); /* data */
if (!mov->exact)
mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
update_size(pb, pos2);
return update_size(pb, pos);
}
return 0;
}
static void build_chunks(MOVTrack *trk)
{
int i;
MOVIentry *chunk = &trk->cluster[0];
uint64_t chunkSize = chunk->size;
chunk->chunkNum = 1;
if (trk->chunkCount)
return;
trk->chunkCount = 1;
for (i = 1; i<trk->entry; i++){
if (chunk->pos + chunkSize == trk->cluster[i].pos &&
chunkSize + trk->cluster[i].size < (1<<20)){
chunkSize += trk->cluster[i].size;
chunk->samples_in_chunk += trk->cluster[i].entries;
} else {
trk->cluster[i].chunkNum = chunk->chunkNum+1;
chunk=&trk->cluster[i];
chunkSize = chunk->size;
trk->chunkCount++;
}
}
}
static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int i;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "moov");
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
continue;
mov->tracks[i].time = mov->time;
mov->tracks[i].track_id = i + 1;
if (mov->tracks[i].entry)
build_chunks(&mov->tracks[i]);
}
if (mov->chapter_track)
for (i = 0; i < s->nb_streams; i++) {
mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
mov->tracks[i].tref_id =
mov->tracks[mov->tracks[i].src_track].track_id;
}
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
int src_trk = mov->tracks[i].src_track;
mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
mov->tracks[src_trk].tref_id = mov->tracks[i].track_id;
//src_trk may have a different timescale than the tmcd track
mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
mov->tracks[i].timescale,
mov->tracks[src_trk].timescale);
}
}
mov_write_mvhd_tag(pb, mov);
if (mov->mode != MODE_MOV && !mov->iods_skip)
mov_write_iods_tag(pb, mov);
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
}
}
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
if (mov->mode == MODE_PSP)
mov_write_uuidusmt_tag(pb, s);
else
mov_write_udta_tag(pb, mov, s);
return update_size(pb, pos);
}
static void param_write_int(AVIOContext *pb, const char *name, int value)
{
avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
}
static void param_write_string(AVIOContext *pb, const char *name, const char *value)
{
avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
}
static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
{
char buf[150];
len = FFMIN(sizeof(buf) / 2 - 1, len);
ff_data_to_hex(buf, value, len, 0);
buf[2 * len] = '\0';
avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
}
static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov)
{
int64_t pos = avio_tell(pb);
int i;
static const uint8_t uuid[] = {
0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
};
avio_wb32(pb, 0);
ffio_wfourcc(pb, "uuid");
avio_write(pb, uuid, sizeof(uuid));
avio_wb32(pb, 0);
avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
avio_printf(pb, "<head>\n");
if (!mov->exact)
avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
LIBAVFORMAT_IDENT);
avio_printf(pb, "</head>\n");
avio_printf(pb, "<body>\n");
avio_printf(pb, "<switch>\n");
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
const char *type;
/* track->track_id is initialized in write_moov, and thus isn't known
* here yet */
int track_id = i + 1;
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
type = "video";
} else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
type = "audio";
} else {
continue;
}
avio_printf(pb, "<%s systemBitrate=\"%d\">\n", type,
track->enc->bit_rate);
param_write_int(pb, "systemBitrate", track->enc->bit_rate);
param_write_int(pb, "trackID", track_id);
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
if (track->enc->codec_id == AV_CODEC_ID_H264) {
uint8_t *ptr;
int size = track->enc->extradata_size;
if (!ff_avc_write_annexb_extradata(track->enc->extradata, &ptr,
&size)) {
param_write_hex(pb, "CodecPrivateData",
ptr ? ptr : track->enc->extradata,
size);
av_free(ptr);
}
param_write_string(pb, "FourCC", "H264");
} else if (track->enc->codec_id == AV_CODEC_ID_VC1) {
param_write_string(pb, "FourCC", "WVC1");
param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
track->enc->extradata_size);
}
param_write_int(pb, "MaxWidth", track->enc->width);
param_write_int(pb, "MaxHeight", track->enc->height);
param_write_int(pb, "DisplayWidth", track->enc->width);
param_write_int(pb, "DisplayHeight", track->enc->height);
} else {
if (track->enc->codec_id == AV_CODEC_ID_AAC) {
param_write_string(pb, "FourCC", "AACL");
} else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO) {
param_write_string(pb, "FourCC", "WMAP");
}
param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
track->enc->extradata_size);
param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,
track->enc->codec_id));
param_write_int(pb, "Channels", track->enc->channels);
param_write_int(pb, "SamplingRate", track->enc->sample_rate);
param_write_int(pb, "BitsPerSample", 16);
param_write_int(pb, "PacketSize", track->enc->block_align ?
track->enc->block_align : 4);
}
avio_printf(pb, "</%s>\n", type);
}
avio_printf(pb, "</switch>\n");
avio_printf(pb, "</body>\n");
avio_printf(pb, "</smil>\n");
return update_size(pb, pos);
}
static int mov_write_mfhd_tag(AVIOContext *pb, MOVMuxContext *mov)
{
avio_wb32(pb, 16);
ffio_wfourcc(pb, "mfhd");
avio_wb32(pb, 0);
avio_wb32(pb, mov->fragments);
return 0;
}
static int mov_write_tfhd_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int64_t moof_offset)
{
int64_t pos = avio_tell(pb);
uint32_t flags = MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
MOV_TFHD_BASE_DATA_OFFSET;
if (!track->entry) {
flags |= MOV_TFHD_DURATION_IS_EMPTY;
} else {
flags |= MOV_TFHD_DEFAULT_FLAGS;
}
if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET)
flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {
flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
flags |= MOV_TFHD_DEFAULT_BASE_IS_MOOF;
}
/* Don't set a default sample size, the silverlight player refuses
* to play files with that set. Don't set a default sample duration,
* WMP freaks out if it is set. Don't set a base data offset, PIFF
* file format says it MUST NOT be set. */
if (track->mode == MODE_ISM)
flags &= ~(MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
MOV_TFHD_BASE_DATA_OFFSET);
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "tfhd");
avio_w8(pb, 0); /* version */
avio_wb24(pb, flags);
avio_wb32(pb, track->track_id); /* track-id */
if (flags & MOV_TFHD_BASE_DATA_OFFSET)
avio_wb64(pb, moof_offset);
if (flags & MOV_TFHD_DEFAULT_DURATION) {
track->default_duration = get_cluster_duration(track, 0);
avio_wb32(pb, track->default_duration);
}
if (flags & MOV_TFHD_DEFAULT_SIZE) {
track->default_size = track->entry ? track->cluster[0].size : 1;
avio_wb32(pb, track->default_size);
} else
track->default_size = -1;
if (flags & MOV_TFHD_DEFAULT_FLAGS) {
track->default_sample_flags =
track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
(MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC) :
MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO;
avio_wb32(pb, track->default_sample_flags);
}
return update_size(pb, pos);
}
static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
{
return entry->flags & MOV_SYNC_SAMPLE ? MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO :
(MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC);
}
static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int moof_size)
{
int64_t pos = avio_tell(pb);
uint32_t flags = MOV_TRUN_DATA_OFFSET;
int i;
for (i = 0; i < track->entry; i++) {
if (get_cluster_duration(track, i) != track->default_duration)
flags |= MOV_TRUN_SAMPLE_DURATION;
if (track->cluster[i].size != track->default_size)
flags |= MOV_TRUN_SAMPLE_SIZE;
if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
flags |= MOV_TRUN_SAMPLE_FLAGS;
}
if (!(flags & MOV_TRUN_SAMPLE_FLAGS))
flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
if (track->flags & MOV_TRACK_CTTS)
flags |= MOV_TRUN_SAMPLE_CTS;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "trun");
avio_w8(pb, 0); /* version */
avio_wb24(pb, flags);
avio_wb32(pb, track->entry); /* sample count */
if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) &&
!mov->first_trun)
avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
else
avio_wb32(pb, moof_size + 8 + track->data_offset +
track->cluster[0].pos); /* data offset */
if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
for (i = 0; i < track->entry; i++) {
if (flags & MOV_TRUN_SAMPLE_DURATION)
avio_wb32(pb, get_cluster_duration(track, i));
if (flags & MOV_TRUN_SAMPLE_SIZE)
avio_wb32(pb, track->cluster[i].size);
if (flags & MOV_TRUN_SAMPLE_FLAGS)
avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
if (flags & MOV_TRUN_SAMPLE_CTS)
avio_wb32(pb, track->cluster[i].cts);
}
mov->first_trun = 0;
return update_size(pb, pos);
}
static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
static const uint8_t uuid[] = {
0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
};
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "uuid");
avio_write(pb, uuid, sizeof(uuid));
avio_w8(pb, 1);
avio_wb24(pb, 0);
avio_wb64(pb, track->frag_start);
avio_wb64(pb, track->start_dts + track->track_duration -
track->cluster[0].dts);
return update_size(pb, pos);
}
static int mov_write_tfrf_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int entry)
{
int n = track->nb_frag_info - 1 - entry, i;
int size = 8 + 16 + 4 + 1 + 16*n;
static const uint8_t uuid[] = {
0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
};
if (entry < 0)
return 0;
avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
avio_wb32(pb, size);
ffio_wfourcc(pb, "uuid");
avio_write(pb, uuid, sizeof(uuid));
avio_w8(pb, 1);
avio_wb24(pb, 0);
avio_w8(pb, n);
for (i = 0; i < n; i++) {
int index = entry + 1 + i;
avio_wb64(pb, track->frag_info[index].time);
avio_wb64(pb, track->frag_info[index].duration);
}
if (n < mov->ism_lookahead) {
int free_size = 16 * (mov->ism_lookahead - n);
avio_wb32(pb, free_size);
ffio_wfourcc(pb, "free");
ffio_fill(pb, 0, free_size - 8);
}
return 0;
}
static int mov_write_tfrf_tags(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int i;
for (i = 0; i < mov->ism_lookahead; i++) {
/* Update the tfrf tag for the last ism_lookahead fragments,
* nb_frag_info - 1 is the next fragment to be written. */
mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
}
avio_seek(pb, pos, SEEK_SET);
return 0;
}
static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
int size)
{
int i;
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
MOVFragmentInfo *info;
if ((tracks >= 0 && i != tracks) || !track->entry)
continue;
track->nb_frag_info++;
if (track->nb_frag_info >= track->frag_info_capacity) {
unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
if (av_reallocp_array(&track->frag_info,
new_capacity,
sizeof(*track->frag_info)))
return AVERROR(ENOMEM);
track->frag_info_capacity = new_capacity;
}
info = &track->frag_info[track->nb_frag_info - 1];
info->offset = avio_tell(pb);
info->size = size;
// Try to recreate the original pts for the first packet
// from the fields we have stored
info->time = track->start_dts + track->frag_start +
track->cluster[0].cts;
// If the pts is less than zero, we will have trimmed
// away parts of the media track using an edit list,
// and the corresponding start presentation time is zero.
if (info->time < 0)
info->time = 0;
info->duration = track->start_dts + track->track_duration -
track->cluster[0].dts;
info->tfrf_offset = 0;
mov_write_tfrf_tags(pb, mov, track);
}
return 0;
}
static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tfdt");
avio_w8(pb, 1); /* version */
avio_wb24(pb, 0);
avio_wb64(pb, track->frag_start);
return update_size(pb, pos);
}
static int mov_write_traf_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int64_t moof_offset,
int moof_size)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "traf");
mov_write_tfhd_tag(pb, mov, track, moof_offset);
if (mov->mode != MODE_ISM)
mov_write_tfdt_tag(pb, track);
mov_write_trun_tag(pb, mov, track, moof_size);
if (mov->mode == MODE_ISM) {
mov_write_tfxd_tag(pb, track);
if (mov->ism_lookahead) {
int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
if (track->nb_frag_info > 0) {
MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];
if (!info->tfrf_offset)
info->tfrf_offset = avio_tell(pb);
}
avio_wb32(pb, 8 + size);
ffio_wfourcc(pb, "free");
for (i = 0; i < size; i++)
avio_w8(pb, 0);
}
}
return update_size(pb, pos);
}
static int mov_write_moof_tag_internal(AVIOContext *pb, MOVMuxContext *mov,
int tracks, int moof_size)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "moof");
mov->first_trun = 1;
mov_write_mfhd_tag(pb, mov);
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (tracks >= 0 && i != tracks)
continue;
if (!track->entry)
continue;
mov_write_traf_tag(pb, mov, track, pos, moof_size);
}
return update_size(pb, pos);
}
static int mov_write_sidx_tag(AVIOContext *pb,
MOVTrack *track, int ref_size, int total_sidx_size)
{
int64_t pos = avio_tell(pb), offset_pos, end_pos;
int64_t presentation_time, duration, offset;
int starts_with_SAP, i, entries;
if (track->entry) {
entries = 1;
presentation_time = track->start_dts + track->frag_start +
track->cluster[0].cts;
duration = track->start_dts + track->track_duration -
track->cluster[0].dts;
starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;
} else {
entries = track->nb_frag_info;
presentation_time = track->frag_info[0].time;
}
// pts<0 should be cut away using edts
if (presentation_time < 0)
presentation_time = 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "sidx");
avio_w8(pb, 1); /* version */
avio_wb24(pb, 0);
avio_wb32(pb, track->track_id); /* reference_ID */
avio_wb32(pb, track->timescale); /* timescale */
avio_wb64(pb, presentation_time); /* earliest_presentation_time */
offset_pos = avio_tell(pb);
avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
avio_wb16(pb, 0); /* reserved */
avio_wb16(pb, entries); /* reference_count */
for (i = 0; i < entries; i++) {
if (!track->entry) {
if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
}
duration = track->frag_info[i].duration;
ref_size = track->frag_info[i].size;
starts_with_SAP = 1;
}
avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
avio_wb32(pb, duration); /* subsegment_duration */
avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
}
end_pos = avio_tell(pb);
offset = pos + total_sidx_size - end_pos;
avio_seek(pb, offset_pos, SEEK_SET);
avio_wb64(pb, offset);
avio_seek(pb, end_pos, SEEK_SET);
return update_size(pb, pos);
}
static int mov_write_sidx_tags(AVIOContext *pb, MOVMuxContext *mov,
int tracks, int ref_size)
{
int i, round, ret;
AVIOContext *avio_buf;
int total_size = 0;
for (round = 0; round < 2; round++) {
// First run one round to calculate the total size of all
// sidx atoms.
// This would be much simpler if we'd only write one sidx
// atom, for the first track in the moof.
if (round == 0) {
if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
return ret;
} else {
avio_buf = pb;
}
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (tracks >= 0 && i != tracks)
continue;
// When writing a sidx for the full file, entry is 0, but
// we want to include all tracks. ref_size is 0 in this case,
// since we read it from frag_info instead.
if (!track->entry && ref_size > 0)
continue;
total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
total_size);
}
if (round == 0)
total_size = ffio_close_null_buf(avio_buf);
}
return 0;
}
static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
int64_t mdat_size)
{
AVIOContext *avio_buf;
int ret, moof_size;
if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
return ret;
mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
moof_size = ffio_close_null_buf(avio_buf);
if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_FASTSTART))
mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);
if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
return ret;
return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
}
static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "tfra");
avio_w8(pb, 1); /* version */
avio_wb24(pb, 0);
avio_wb32(pb, track->track_id);
avio_wb32(pb, 0); /* length of traf/trun/sample num */
avio_wb32(pb, track->nb_frag_info);
for (i = 0; i < track->nb_frag_info; i++) {
avio_wb64(pb, track->frag_info[i].time);
avio_wb64(pb, track->frag_info[i].offset + track->data_offset);
avio_w8(pb, 1); /* traf number */
avio_w8(pb, 1); /* trun number */
avio_w8(pb, 1); /* sample number */
}
return update_size(pb, pos);
}
static int mov_write_mfra_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "mfra");
/* An empty mfra atom is enough to indicate to the publishing point that
* the stream has ended. */
if (mov->flags & FF_MOV_FLAG_ISML)
return update_size(pb, pos);
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (track->nb_frag_info)
mov_write_tfra_tag(pb, track);
}
avio_wb32(pb, 16);
ffio_wfourcc(pb, "mfro");
avio_wb32(pb, 0); /* version + flags */
avio_wb32(pb, avio_tell(pb) + 4 - pos);
return update_size(pb, pos);
}
static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
{
avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
mov->mdat_pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "mdat");
return 0;
}
/* TODO: This needs to be more general */
static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int64_t pos = avio_tell(pb);
int has_h264 = 0, has_video = 0;
int minor = 0x200;
int i;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
has_video = 1;
if (st->codec->codec_id == AV_CODEC_ID_H264)
has_h264 = 1;
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "ftyp");
if (mov->major_brand && strlen(mov->major_brand) >= 4)
ffio_wfourcc(pb, mov->major_brand);
else if (mov->mode == MODE_3GP) {
ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
minor = has_h264 ? 0x100 : 0x200;
} else if (mov->mode & MODE_3G2) {
ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
minor = has_h264 ? 0x20000 : 0x10000;
} else if (mov->mode == MODE_PSP)
ffio_wfourcc(pb, "MSNV");
else if (mov->mode == MODE_MP4 && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)
ffio_wfourcc(pb, "iso5"); // Required when using default-base-is-moof
else if (mov->mode == MODE_MP4)
ffio_wfourcc(pb, "isom");
else if (mov->mode == MODE_IPOD)
ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
else if (mov->mode == MODE_ISM)
ffio_wfourcc(pb, "isml");
else if (mov->mode == MODE_F4V)
ffio_wfourcc(pb, "f4v ");
else
ffio_wfourcc(pb, "qt ");
avio_wb32(pb, minor);
if (mov->mode == MODE_MOV)
ffio_wfourcc(pb, "qt ");
else if (mov->mode == MODE_ISM) {
ffio_wfourcc(pb, "piff");
} else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {
ffio_wfourcc(pb, "isom");
ffio_wfourcc(pb, "iso2");
if (has_h264)
ffio_wfourcc(pb, "avc1");
}
// We add tfdt atoms when fragmenting, signal this with the iso6 compatible
// brand. This is compatible with users that don't understand tfdt.
if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)
ffio_wfourcc(pb, "iso6");
if (mov->mode == MODE_3GP)
ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
else if (mov->mode & MODE_3G2)
ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
else if (mov->mode == MODE_PSP)
ffio_wfourcc(pb, "MSNV");
else if (mov->mode == MODE_MP4)
ffio_wfourcc(pb, "mp41");
if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_FASTSTART)
ffio_wfourcc(pb, "dash");
return update_size(pb, pos);
}
static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
{
AVStream *video_st = s->streams[0];
AVCodecContext *video_codec = s->streams[0]->codec;
AVCodecContext *audio_codec = s->streams[1]->codec;
int audio_rate = audio_codec->sample_rate;
// TODO: should be avg_frame_rate
int frame_rate = ((video_st->time_base.den) * (0x10000)) / (video_st->time_base.num);
int audio_kbitrate = audio_codec->bit_rate / 1000;
int video_kbitrate = FFMIN(video_codec->bit_rate / 1000, 800 - audio_kbitrate);
avio_wb32(pb, 0x94); /* size */
ffio_wfourcc(pb, "uuid");
ffio_wfourcc(pb, "PROF");
avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
avio_wb32(pb, 0xbb88695c);
avio_wb32(pb, 0xfac9c740);
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x3); /* 3 sections ? */
avio_wb32(pb, 0x14); /* size */
ffio_wfourcc(pb, "FPRF");
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x2c); /* size */
ffio_wfourcc(pb, "APRF"); /* audio */
avio_wb32(pb, 0x0);
avio_wb32(pb, 0x2); /* TrackID */
ffio_wfourcc(pb, "mp4a");
avio_wb32(pb, 0x20f);
avio_wb32(pb, 0x0);
avio_wb32(pb, audio_kbitrate);
avio_wb32(pb, audio_kbitrate);
avio_wb32(pb, audio_rate);
avio_wb32(pb, audio_codec->channels);
avio_wb32(pb, 0x34); /* size */
ffio_wfourcc(pb, "VPRF"); /* video */
avio_wb32(pb, 0x0);
avio_wb32(pb, 0x1); /* TrackID */
if (video_codec->codec_id == AV_CODEC_ID_H264) {
ffio_wfourcc(pb, "avc1");
avio_wb16(pb, 0x014D);
avio_wb16(pb, 0x0015);
} else {
ffio_wfourcc(pb, "mp4v");
avio_wb16(pb, 0x0000);
avio_wb16(pb, 0x0103);
}
avio_wb32(pb, 0x0);
avio_wb32(pb, video_kbitrate);
avio_wb32(pb, video_kbitrate);
avio_wb32(pb, frame_rate);
avio_wb32(pb, frame_rate);
avio_wb16(pb, video_codec->width);
avio_wb16(pb, video_codec->height);
avio_wb32(pb, 0x010001); /* ? */
}
static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
{
uint32_t c = -1;
int i, closed_gop = 0;
for (i = 0; i < pkt->size - 4; i++) {
c = (c << 8) + pkt->data[i];
if (c == 0x1b8) { // gop
closed_gop = pkt->data[i + 4] >> 6 & 0x01;
} else if (c == 0x100) { // pic
int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);
if (!temp_ref || closed_gop) // I picture is not reordered
*flags = MOV_SYNC_SAMPLE;
else
*flags = MOV_PARTIAL_SYNC_SAMPLE;
break;
}
}
return 0;
}
static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk, int fragment)
{
const uint8_t *start, *next, *end = pkt->data + pkt->size;
int seq = 0, entry = 0;
int key = pkt->flags & AV_PKT_FLAG_KEY;
start = find_next_marker(pkt->data, end);
for (next = start; next < end; start = next) {
next = find_next_marker(start + 4, end);
switch (AV_RB32(start)) {
case VC1_CODE_SEQHDR:
seq = 1;
break;
case VC1_CODE_ENTRYPOINT:
entry = 1;
break;
case VC1_CODE_SLICE:
trk->vc1_info.slices = 1;
break;
}
}
if (!trk->entry && !fragment) {
/* First packet in first fragment */
trk->vc1_info.first_packet_seq = seq;
trk->vc1_info.first_packet_entry = entry;
} else if ((seq && !trk->vc1_info.packet_seq) ||
(entry && !trk->vc1_info.packet_entry)) {
int i;
for (i = 0; i < trk->entry; i++)
trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;
trk->has_keyframes = 0;
if (seq)
trk->vc1_info.packet_seq = 1;
if (entry)
trk->vc1_info.packet_entry = 1;
if (!fragment) {
/* First fragment */
if ((!seq || trk->vc1_info.first_packet_seq) &&
(!entry || trk->vc1_info.first_packet_entry)) {
/* First packet had the same headers as this one, readd the
* sync sample flag. */
trk->cluster[0].flags |= MOV_SYNC_SAMPLE;
trk->has_keyframes = 1;
}
}
}
if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)
key = seq && entry;
else if (trk->vc1_info.packet_seq)
key = seq;
else if (trk->vc1_info.packet_entry)
key = entry;
if (key) {
trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
trk->has_keyframes++;
}
}
static int mov_flush_fragment(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int i, first_track = -1;
int64_t mdat_size = 0;
if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
return 0;
if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
int64_t pos = avio_tell(s->pb);
uint8_t *buf;
int buf_size, moov_size;
for (i = 0; i < mov->nb_streams; i++)
if (!mov->tracks[i].entry)
break;
/* Don't write the initial moov unless all tracks have data */
if (i < mov->nb_streams)
return 0;
moov_size = get_moov_size(s);
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset = pos + moov_size + 8;
mov_write_moov_tag(s->pb, mov, s);
buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
mov->mdat_buf = NULL;
avio_wb32(s->pb, buf_size + 8);
ffio_wfourcc(s->pb, "mdat");
avio_write(s->pb, buf, buf_size);
av_free(buf);
mov->fragments++;
mov->mdat_size = 0;
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry)
mov->tracks[i].frag_start += mov->tracks[i].start_dts +
mov->tracks[i].track_duration -
mov->tracks[i].cluster[0].dts;
mov->tracks[i].entry = 0;
}
avio_flush(s->pb);
return 0;
}
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
track->data_offset = 0;
else
track->data_offset = mdat_size;
if (!track->mdat_buf)
continue;
mdat_size += avio_tell(track->mdat_buf);
if (first_track < 0)
first_track = i;
}
if (!mdat_size)
return 0;
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
int buf_size, write_moof = 1, moof_tracks = -1;
uint8_t *buf;
int64_t duration = 0;
if (track->entry)
duration = track->start_dts + track->track_duration -
track->cluster[0].dts;
if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
if (!track->mdat_buf)
continue;
mdat_size = avio_tell(track->mdat_buf);
moof_tracks = i;
} else {
write_moof = i == first_track;
}
if (write_moof) {
avio_flush(s->pb);
mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);
mov->fragments++;
avio_wb32(s->pb, mdat_size + 8);
ffio_wfourcc(s->pb, "mdat");
}
if (track->entry)
track->frag_start += duration;
track->entry = 0;
if (!track->mdat_buf)
continue;
buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
track->mdat_buf = NULL;
avio_write(s->pb, buf, buf_size);
av_free(buf);
}
mov->mdat_size = 0;
avio_flush(s->pb);
return 0;
}
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVMuxContext *mov = s->priv_data;
AVIOContext *pb = s->pb;
MOVTrack *trk = &mov->tracks[pkt->stream_index];
AVCodecContext *enc = trk->enc;
unsigned int samples_in_chunk = 0;
int size = pkt->size, ret = 0;
uint8_t *reformatted_data = NULL;
if (trk->entry) {
int64_t duration = pkt->dts - trk->cluster[trk->entry - 1].dts;
if (duration < 0 || duration > INT_MAX) {
av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n",
duration, pkt->dts
);
pkt->dts = trk->cluster[trk->entry - 1].dts + 1;
pkt->pts = AV_NOPTS_VALUE;
}
if (pkt->duration < 0) {
av_log(s, AV_LOG_ERROR, "Application provided duration: %d is invalid\n", pkt->duration);
return AVERROR(EINVAL);
}
}
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
int ret;
if (mov->fragments > 0) {
if (!trk->mdat_buf) {
if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
return ret;
}
pb = trk->mdat_buf;
} else {
if (!mov->mdat_buf) {
if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
return ret;
}
pb = mov->mdat_buf;
}
}
if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
/* We must find out how many AMR blocks there are in one packet */
static uint16_t packed_size[16] =
{13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
int len = 0;
while (len < size && samples_in_chunk < 100) {
len += packed_size[(pkt->data[len] >> 3) & 0x0F];
samples_in_chunk++;
}
if (samples_in_chunk > 1) {
av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
return -1;
}
} else if (enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
samples_in_chunk = enc->frame_size;
} else if (trk->sample_size)
samples_in_chunk = size / trk->sample_size;
else
samples_in_chunk = 1;
/* copy extradata if it exists */
if (trk->vos_len == 0 && enc->extradata_size > 0 && !TAG_IS_AVCI(trk->tag)) {
trk->vos_len = enc->extradata_size;
trk->vos_data = av_malloc(trk->vos_len);
memcpy(trk->vos_data, enc->extradata, trk->vos_len);
}
if (enc->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
(AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
if (!s->streams[pkt->stream_index]->nb_frames) {
av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "
"use the audio bitstream filter 'aac_adtstoasc' to fix it "
"('-bsf:a aac_adtstoasc' option with ffmpeg)\n");
return -1;
}
av_log(s, AV_LOG_WARNING, "aac bitstream error\n");
}
if (enc->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1 && !TAG_IS_AVCI(trk->tag)) {
/* from x264 or from bytestream h264 */
/* nal reformating needed */
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
&size);
avio_write(pb, reformatted_data, size);
} else {
size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
}
} else if (enc->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&
(AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
/* extradata is Annex B, assume the bitstream is too and convert it */
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);
avio_write(pb, reformatted_data, size);
} else {
size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
}
} else if (enc->codec_id == AV_CODEC_ID_EAC3) {
size = handle_eac3(mov, pkt, trk);
if (size < 0)
return size;
else if (!size)
goto end;
avio_write(pb, pkt->data, size);
} else {
avio_write(pb, pkt->data, size);
}
if ((enc->codec_id == AV_CODEC_ID_DNXHD ||
enc->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
/* copy frame to create needed atoms */
trk->vos_len = size;
trk->vos_data = av_malloc(size);
if (!trk->vos_data) {
ret = AVERROR(ENOMEM);
goto err;
}
memcpy(trk->vos_data, pkt->data, size);
}
if (trk->entry >= trk->cluster_capacity) {
unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
if (av_reallocp_array(&trk->cluster, new_capacity,
sizeof(*trk->cluster))) {
ret = AVERROR(ENOMEM);
goto err;
}
trk->cluster_capacity = new_capacity;
}
trk->cluster[trk->entry].pos = avio_tell(pb) - size;
trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
trk->cluster[trk->entry].chunkNum = 0;
trk->cluster[trk->entry].size = size;
trk->cluster[trk->entry].entries = samples_in_chunk;
trk->cluster[trk->entry].dts = pkt->dts;
if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
if (!trk->frag_discont) {
/* First packet of a new fragment. We already wrote the duration
* of the last packet of the previous fragment based on track_duration,
* which might not exactly match our dts. Therefore adjust the dts
* of this packet to be what the previous packets duration implies. */
trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
} else {
/* New fragment, but discontinuous from previous fragments.
* Pretend the duration sum of the earlier fragments is
* pkt->dts - trk->start_dts. */
trk->frag_start = pkt->dts - trk->start_dts;
trk->frag_discont = 0;
}
}
if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
/* Not using edit lists and shifting the first track to start from zero.
* If the other streams start from a later timestamp, we won't be able
* to signal the difference in starting time without an edit list.
* Thus move the timestamp for this first sample to 0, increasing
* its duration instead. */
trk->cluster[trk->entry].dts = trk->start_dts = 0;
}
if (trk->start_dts == AV_NOPTS_VALUE) {
trk->start_dts = pkt->dts;
if (trk->frag_discont) {
/* Pretend the whole stream started at dts=0, with earlier framgents
* already written, with a duration summing up to pkt->dts. */
trk->frag_start = pkt->dts;
trk->start_dts = 0;
trk->frag_discont = 0;
} else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
av_log(s, AV_LOG_WARNING,
"Track %d starts with a nonzero dts %"PRId64". This "
"currently isn't handled correctly in combination with "
"empty_moov.\n", pkt->stream_index, pkt->dts);
}
trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
trk->last_sample_is_subtitle_end = 0;
if (pkt->pts == AV_NOPTS_VALUE) {
av_log(s, AV_LOG_WARNING, "pts has no value\n");
pkt->pts = pkt->dts;
}
if (pkt->dts != pkt->pts)
trk->flags |= MOV_TRACK_CTTS;
trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
trk->cluster[trk->entry].flags = 0;
if (enc->codec_id == AV_CODEC_ID_VC1) {
mov_parse_vc1_frame(pkt, trk, mov->fragments);
} else if (pkt->flags & AV_PKT_FLAG_KEY) {
if (mov->mode == MODE_MOV && enc->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
trk->entry > 0) { // force sync sample for the first key frame
mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
trk->flags |= MOV_TRACK_STPS;
} else {
trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
}
if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
trk->has_keyframes++;
}
trk->entry++;
trk->sample_count += samples_in_chunk;
mov->mdat_size += size;
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
reformatted_data, size);
end:
err:
av_free(reformatted_data);
return ret;
}
static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVMuxContext *mov = s->priv_data;
MOVTrack *trk = &mov->tracks[pkt->stream_index];
AVCodecContext *enc = trk->enc;
int64_t frag_duration = 0;
int size = pkt->size;
if (!pkt->size)
return 0; /* Discard 0 sized packets */
if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
int i;
for (i = 0; i < s->nb_streams; i++)
mov->tracks[i].frag_discont = 1;
mov->flags &= ~FF_MOV_FLAG_FRAG_DISCONT;
}
if (trk->entry && pkt->stream_index < s->nb_streams)
frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
s->streams[pkt->stream_index]->time_base,
AV_TIME_BASE_Q);
if ((mov->max_fragment_duration &&
frag_duration >= mov->max_fragment_duration) ||
(mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
(mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
enc->codec_type == AVMEDIA_TYPE_VIDEO &&
trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
if (frag_duration >= mov->min_fragment_duration)
mov_flush_fragment(s);
}
return ff_mov_write_packet(s, pkt);
}
static int mov_write_subtitle_end_packet(AVFormatContext *s,
int stream_index,
int64_t dts) {
AVPacket end;
uint8_t data[2] = {0};
int ret;
av_init_packet(&end);
end.size = sizeof(data);
end.data = data;
end.pts = dts;
end.dts = dts;
end.duration = 0;
end.stream_index = stream_index;
ret = mov_write_single_packet(s, &end);
av_free_packet(&end);
return ret;
}
static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
if (!pkt) {
mov_flush_fragment(s);
return 1;
} else {
int i;
MOVMuxContext *mov = s->priv_data;
if (!pkt->size) return 0; /* Discard 0 sized packets */
/*
* Subtitles require special handling.
*
* 1) For full complaince, every track must have a sample at
* dts == 0, which is rarely true for subtitles. So, as soon
* as we see any packet with dts > 0, write an empty subtitle
* at dts == 0 for any subtitle track with no samples in it.
*
* 2) For each subtitle track, check if the current packet's
* dts is past the duration of the last subtitle sample. If
* so, we now need to write an end sample for that subtitle.
*
* This must be done conditionally to allow for subtitles that
* immediately replace each other, in which case an end sample
* is not needed, and is, in fact, actively harmful.
*
* 3) See mov_write_trailer for how the final end sample is
* handled.
*/
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *trk = &mov->tracks[i];
int ret;
if (trk->enc->codec_id == AV_CODEC_ID_MOV_TEXT &&
trk->track_duration < pkt->dts &&
(trk->entry == 0 || !trk->last_sample_is_subtitle_end)) {
ret = mov_write_subtitle_end_packet(s, i, trk->track_duration);
if (ret < 0) return ret;
trk->last_sample_is_subtitle_end = 1;
}
}
return mov_write_single_packet(s, pkt);
}
}
// QuickTime chapters involve an additional text track with the chapter names
// as samples, and a tref pointing from the other tracks to the chapter one.
static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
{
AVIOContext *pb;
MOVMuxContext *mov = s->priv_data;
MOVTrack *track = &mov->tracks[tracknum];
AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
int i, len;
track->mode = mov->mode;
track->tag = MKTAG('t','e','x','t');
track->timescale = MOV_TIMESCALE;
track->enc = avcodec_alloc_context3(NULL);
if (!track->enc)
return AVERROR(ENOMEM);
track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
#if 0
// These properties are required to make QT recognize the chapter track
uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
if (ff_alloc_extradata(track->enc, sizeof(chapter_properties)))
return AVERROR(ENOMEM);
memcpy(track->enc->extradata, chapter_properties, sizeof(chapter_properties));
#else
if (avio_open_dyn_buf(&pb) >= 0) {
int size;
uint8_t *buf;
/* Stub header (usually for Quicktime chapter track) */
// TextSampleEntry
avio_wb32(pb, 0x01); // displayFlags
avio_w8(pb, 0x00); // horizontal justification
avio_w8(pb, 0x00); // vertical justification
avio_w8(pb, 0x00); // bgColourRed
avio_w8(pb, 0x00); // bgColourGreen
avio_w8(pb, 0x00); // bgColourBlue
avio_w8(pb, 0x00); // bgColourAlpha
// BoxRecord
avio_wb16(pb, 0x00); // defTextBoxTop
avio_wb16(pb, 0x00); // defTextBoxLeft
avio_wb16(pb, 0x00); // defTextBoxBottom
avio_wb16(pb, 0x00); // defTextBoxRight
// StyleRecord
avio_wb16(pb, 0x00); // startChar
avio_wb16(pb, 0x00); // endChar
avio_wb16(pb, 0x01); // fontID
avio_w8(pb, 0x00); // fontStyleFlags
avio_w8(pb, 0x00); // fontSize
avio_w8(pb, 0x00); // fgColourRed
avio_w8(pb, 0x00); // fgColourGreen
avio_w8(pb, 0x00); // fgColourBlue
avio_w8(pb, 0x00); // fgColourAlpha
// FontTableBox
avio_wb32(pb, 0x0D); // box size
ffio_wfourcc(pb, "ftab"); // box atom name
avio_wb16(pb, 0x01); // entry count
// FontRecord
avio_wb16(pb, 0x01); // font ID
avio_w8(pb, 0x00); // font name length
if ((size = avio_close_dyn_buf(pb, &buf)) > 0) {
track->enc->extradata = buf;
track->enc->extradata_size = size;
} else {
av_freep(&buf);
}
}
#endif
for (i = 0; i < s->nb_chapters; i++) {
AVChapter *c = s->chapters[i];
AVDictionaryEntry *t;
int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
pkt.duration = end - pkt.dts;
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
const char encd[12] = {
0x00, 0x00, 0x00, 0x0C,
'e', 'n', 'c', 'd',
0x00, 0x00, 0x01, 0x00 };
len = strlen(t->value);
pkt.size = len + 2 + 12;
pkt.data = av_malloc(pkt.size);
if (!pkt.data)
return AVERROR(ENOMEM);
AV_WB16(pkt.data, len);
memcpy(pkt.data + 2, t->value, len);
memcpy(pkt.data + len + 2, encd, sizeof(encd));
ff_mov_write_packet(s, &pkt);
av_freep(&pkt.data);
}
}
return 0;
}
static int mov_create_timecode_track(AVFormatContext *s, int index, int src_index, const char *tcstr)
{
int ret;
MOVMuxContext *mov = s->priv_data;
MOVTrack *track = &mov->tracks[index];
AVStream *src_st = s->streams[src_index];
AVTimecode tc;
AVPacket pkt = {.stream_index = index, .flags = AV_PKT_FLAG_KEY, .size = 4};
AVRational rate = find_fps(s, src_st);
/* compute the frame number */
ret = av_timecode_init_from_string(&tc, rate, tcstr, s);
if (ret < 0)
return ret;
/* tmcd track based on video stream */
track->mode = mov->mode;
track->tag = MKTAG('t','m','c','d');
track->src_track = src_index;
track->timescale = mov->tracks[src_index].timescale;
if (tc.flags & AV_TIMECODE_FLAG_DROPFRAME)
track->timecode_flags |= MOV_TIMECODE_FLAG_DROPFRAME;
/* set st to src_st for metadata access*/
track->st = src_st;
/* encode context: tmcd data stream */
track->enc = avcodec_alloc_context3(NULL);
track->enc->codec_type = AVMEDIA_TYPE_DATA;
track->enc->codec_tag = track->tag;
track->enc->time_base = av_inv_q(rate);
/* the tmcd track just contains one packet with the frame number */
pkt.data = av_malloc(pkt.size);
AV_WB32(pkt.data, tc.start);
ret = ff_mov_write_packet(s, &pkt);
av_free(pkt.data);
return ret;
}
/*
* st->disposition controls the "enabled" flag in the tkhd tag.
* QuickTime will not play a track if it is not enabled. So make sure
* that one track of each type (audio, video, subtitle) is enabled.
*
* Subtitles are special. For audio and video, setting "enabled" also
* makes the track "default" (i.e. it is rendered when played). For
* subtitles, an "enabled" subtitle is not rendered by default, but
* if no subtitle is enabled, the subtitle menu in QuickTime will be
* empty!
*/
static void enable_tracks(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int i;
int enabled[AVMEDIA_TYPE_NB];
int first[AVMEDIA_TYPE_NB];
for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
enabled[i] = 0;
first[i] = -1;
}
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type <= AVMEDIA_TYPE_UNKNOWN ||
st->codec->codec_type >= AVMEDIA_TYPE_NB)
continue;
if (first[st->codec->codec_type] < 0)
first[st->codec->codec_type] = i;
if (st->disposition & AV_DISPOSITION_DEFAULT) {
mov->tracks[i].flags |= MOV_TRACK_ENABLED;
enabled[st->codec->codec_type]++;
}
}
for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
switch (i) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_AUDIO:
case AVMEDIA_TYPE_SUBTITLE:
if (enabled[i] > 1)
mov->per_stream_grouping = 1;
if (!enabled[i] && first[i] >= 0)
mov->tracks[first[i]].flags |= MOV_TRACK_ENABLED;
break;
}
}
}
static void mov_free(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int i;
if (mov->chapter_track) {
if (mov->tracks[mov->chapter_track].enc)
av_freep(&mov->tracks[mov->chapter_track].enc->extradata);
av_freep(&mov->tracks[mov->chapter_track].enc);
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
ff_mov_close_hinting(&mov->tracks[i]);
else if (mov->tracks[i].tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd)
av_freep(&mov->tracks[i].enc);
av_freep(&mov->tracks[i].cluster);
av_freep(&mov->tracks[i].frag_info);
if (mov->tracks[i].vos_len)
av_freep(&mov->tracks[i].vos_data);
}
av_freep(&mov->tracks);
}
static uint32_t rgb_to_yuv(uint32_t rgb)
{
uint8_t r, g, b;
int y, cb, cr;
r = (rgb >> 16) & 0xFF;
g = (rgb >> 8) & 0xFF;
b = (rgb ) & 0xFF;
y = av_clip_uint8( 16. + 0.257 * r + 0.504 * g + 0.098 * b);
cb = av_clip_uint8(128. - 0.148 * r - 0.291 * g + 0.439 * b);
cr = av_clip_uint8(128. + 0.439 * r - 0.368 * g - 0.071 * b);
return (y << 16) | (cr << 8) | cb;
}
static int mov_create_dvd_sub_decoder_specific_info(MOVTrack *track,
AVStream *st)
{
int i, width = 720, height = 480;
int have_palette = 0, have_size = 0;
uint32_t palette[16];
char *cur = st->codec->extradata;
while (cur && *cur) {
if (strncmp("palette:", cur, 8) == 0) {
int i, count;
count = sscanf(cur + 8,
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32"",
&palette[ 0], &palette[ 1], &palette[ 2], &palette[ 3],
&palette[ 4], &palette[ 5], &palette[ 6], &palette[ 7],
&palette[ 8], &palette[ 9], &palette[10], &palette[11],
&palette[12], &palette[13], &palette[14], &palette[15]);
for (i = 0; i < count; i++) {
palette[i] = rgb_to_yuv(palette[i]);
}
have_palette = 1;
} else if (!strncmp("size:", cur, 5)) {
sscanf(cur + 5, "%dx%d", &width, &height);
have_size = 1;
}
if (have_palette && have_size)
break;
cur += strcspn(cur, "\n\r");
cur += strspn(cur, "\n\r");
}
if (have_palette) {
track->vos_data = av_malloc(16*4);
if (!track->vos_data)
return AVERROR(ENOMEM);
for (i = 0; i < 16; i++) {
AV_WB32(track->vos_data + i * 4, palette[i]);
}
track->vos_len = 16 * 4;
}
st->codec->width = width;
st->codec->height = track->height = height;
return 0;
}
static int mov_write_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
MOVMuxContext *mov = s->priv_data;
AVDictionaryEntry *t, *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
int i, ret, hint_track = 0, tmcd_track = 0;
mov->fc = s;
/* Default mode == MP4 */
mov->mode = MODE_MP4;
if (s->oformat) {
if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM;
else if (!strcmp("f4v", s->oformat->name)) mov->mode = MODE_F4V;
}
if (s->flags & AVFMT_FLAG_BITEXACT)
mov->exact = 1;
/* Set the FRAGMENT flag if any of the fragmentation methods are
* enabled. */
if (mov->max_fragment_duration || mov->max_fragment_size ||
mov->flags & (FF_MOV_FLAG_EMPTY_MOOV |
FF_MOV_FLAG_FRAG_KEYFRAME |
FF_MOV_FLAG_FRAG_CUSTOM))
mov->flags |= FF_MOV_FLAG_FRAGMENT;
/* Set other implicit flags immediately */
if (mov->mode == MODE_ISM)
mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF |
FF_MOV_FLAG_FRAGMENT;
if (mov->flags & FF_MOV_FLAG_DASH)
mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV |
FF_MOV_FLAG_DEFAULT_BASE_MOOF;
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
mov->reserved_moov_size = -1;
}
if (mov->use_editlist < 0) {
mov->use_editlist = 1;
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
// If we can avoid needing an edit list by shifting the
// tracks, prefer that over (trying to) write edit lists
// in fragmented output.
if (s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO ||
s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)
mov->use_editlist = 0;
}
}
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && mov->use_editlist)
av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov\n");
if (!mov->use_editlist && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO)
s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_ZERO;
/* Non-seekable output is ok if using fragmentation. If ism_lookahead
* is enabled, we don't support non-seekable output at all. */
if (!s->pb->seekable &&
(!(mov->flags & FF_MOV_FLAG_FRAGMENT) || mov->ism_lookahead)) {
av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
return AVERROR(EINVAL);
}
mov_write_ftyp_tag(pb,s);
if (mov->mode == MODE_PSP) {
int video_streams_nb = 0, audio_streams_nb = 0, other_streams_nb = 0;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
video_streams_nb++;
else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
audio_streams_nb++;
else
other_streams_nb++;
}
if (video_streams_nb != 1 || audio_streams_nb != 1 || other_streams_nb) {
av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
return AVERROR(EINVAL);
}
mov_write_uuidprof_tag(pb, s);
}
mov->nb_streams = s->nb_streams;
if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)
mov->chapter_track = mov->nb_streams++;
if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
/* Add hint tracks for each audio and video stream */
hint_track = mov->nb_streams;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
mov->nb_streams++;
}
}
}
if (mov->mode == MODE_MOV) {
tmcd_track = mov->nb_streams;
/* +1 tmcd track for each video stream with a timecode */
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
(global_tcr || av_dict_get(st->metadata, "timecode", NULL, 0)))
mov->nb_meta_tmcd++;
}
/* check if there is already a tmcd track to remux */
if (mov->nb_meta_tmcd) {
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
av_log(s, AV_LOG_WARNING, "You requested a copy of the original timecode track "
"so timecode metadata are now ignored\n");
mov->nb_meta_tmcd = 0;
}
}
}
mov->nb_streams += mov->nb_meta_tmcd;
}
// Reserve an extra stream for chapters for the case where chapters
// are written in the trailer
mov->tracks = av_mallocz_array((mov->nb_streams + 1), sizeof(*mov->tracks));
if (!mov->tracks)
return AVERROR(ENOMEM);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st= s->streams[i];
MOVTrack *track= &mov->tracks[i];
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
track->st = st;
track->enc = st->codec;
track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
if (track->language < 0)
track->language = 0;
track->mode = mov->mode;
track->tag = mov_find_codec_tag(s, track);
if (!track->tag) {
av_log(s, AV_LOG_ERROR, "Could not find tag for codec %s in stream #%d, "
"codec not currently supported in container\n",
avcodec_get_name(st->codec->codec_id), i);
ret = AVERROR(EINVAL);
goto error;
}
/* If hinting of this track is enabled by a later hint track,
* this is updated. */
track->hint_track = -1;
track->start_dts = AV_NOPTS_VALUE;
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
ret = AVERROR(EINVAL);
goto error;
}
track->height = track->tag >> 24 == 'n' ? 486 : 576;
}
if (mov->video_track_timescale) {
track->timescale = mov->video_track_timescale;
} else {
track->timescale = st->time_base.den;
while(track->timescale < 10000)
track->timescale *= 2;
}
if (st->codec->width > 65535 || st->codec->height > 65535) {
av_log(s, AV_LOG_ERROR, "Resolution %dx%d too large for mov/mp4\n", st->codec->width, st->codec->height);
ret = AVERROR(EINVAL);
goto error;
}
if (track->mode == MODE_MOV && track->timescale > 100000)
av_log(s, AV_LOG_WARNING,
"WARNING codec timebase is very high. If duration is too long,\n"
"file may not be playable by quicktime. Specify a shorter timebase\n"
"or choose different container.\n");
} else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
track->timescale = st->codec->sample_rate;
if (!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {
av_log(s, AV_LOG_WARNING, "track %d: codec frame size is not set\n", i);
track->audio_vbr = 1;
}else if (st->codec->codec_id == AV_CODEC_ID_ADPCM_MS ||
st->codec->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
st->codec->codec_id == AV_CODEC_ID_ILBC){
if (!st->codec->block_align) {
av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);
ret = AVERROR(EINVAL);
goto error;
}
track->sample_size = st->codec->block_align;
}else if (st->codec->frame_size > 1){ /* assume compressed audio */
track->audio_vbr = 1;
}else{
track->sample_size = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;
}
if (st->codec->codec_id == AV_CODEC_ID_ILBC ||
st->codec->codec_id == AV_CODEC_ID_ADPCM_IMA_QT) {
track->audio_vbr = 1;
}
if (track->mode != MODE_MOV &&
track->enc->codec_id == AV_CODEC_ID_MP3 && track->timescale < 16000) {
av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
i, track->enc->sample_rate);
ret = AVERROR(EINVAL);
goto error;
}
} else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
track->timescale = st->time_base.den;
} else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
track->timescale = st->time_base.den;
} else {
track->timescale = MOV_TIMESCALE;
}
if (!track->height)
track->height = st->codec->height;
/* The ism specific timescale isn't mandatory, but is assumed by
* some tools, such as mp4split. */
if (mov->mode == MODE_ISM)
track->timescale = 10000000;
avpriv_set_pts_info(st, 64, 1, track->timescale);
/* copy extradata if it exists */
if (st->codec->extradata_size) {
if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
mov_create_dvd_sub_decoder_specific_info(track, st);
else if (!TAG_IS_AVCI(track->tag)){
track->vos_len = st->codec->extradata_size;
track->vos_data = av_malloc(track->vos_len);
memcpy(track->vos_data, st->codec->extradata, track->vos_len);
}
}
}
for (i = 0; i < s->nb_streams; i++) {
int j;
AVStream *st= s->streams[i];
MOVTrack *track= &mov->tracks[i];
if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO ||
track->enc->channel_layout != AV_CH_LAYOUT_MONO)
continue;
for (j = 0; j < s->nb_streams; j++) {
AVStream *stj= s->streams[j];
MOVTrack *trackj= &mov->tracks[j];
if (j == i)
continue;
if (stj->codec->codec_type != AVMEDIA_TYPE_AUDIO ||
trackj->enc->channel_layout != AV_CH_LAYOUT_MONO ||
trackj->language != track->language ||
trackj->tag != track->tag
)
continue;
track->multichannel_as_mono++;
}
}
enable_tracks(s);
if (mov->reserved_moov_size){
mov->reserved_moov_pos= avio_tell(pb);
if (mov->reserved_moov_size > 0)
avio_skip(pb, mov->reserved_moov_size);
}
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
/* If no fragmentation options have been set, set a default. */
if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME |
FF_MOV_FLAG_FRAG_CUSTOM)) &&
!mov->max_fragment_duration && !mov->max_fragment_size)
mov->flags |= FF_MOV_FLAG_FRAG_KEYFRAME;
} else {
if (mov->flags & FF_MOV_FLAG_FASTSTART)
mov->reserved_moov_pos = avio_tell(pb);
mov_write_mdat_tag(pb, mov);
}
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
mov->time = ff_iso8601_to_unix_time(t->value);
if (mov->time)
mov->time += 0x7C25B080; // 1970 based -> 1904 based
if (mov->chapter_track)
if ((ret = mov_create_chapter_track(s, mov->chapter_track)) < 0)
goto error;
if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
/* Initialize the hint tracks for each audio and video stream */
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
if ((ret = ff_mov_init_hinting(s, hint_track, i)) < 0)
goto error;
hint_track++;
}
}
}
if (mov->nb_meta_tmcd) {
/* Initialize the tmcd tracks */
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
t = global_tcr;
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (!t)
t = av_dict_get(st->metadata, "timecode", NULL, 0);
if (!t)
continue;
if ((ret = mov_create_timecode_track(s, tmcd_track, i, t->value)) < 0)
goto error;
tmcd_track++;
}
}
}
avio_flush(pb);
if (mov->flags & FF_MOV_FLAG_ISML)
mov_write_isml_manifest(pb, mov);
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
mov_write_moov_tag(pb, mov, s);
mov->fragments++;
if (mov->flags & FF_MOV_FLAG_FASTSTART)
mov->reserved_moov_pos = avio_tell(pb);
}
return 0;
error:
mov_free(s);
return ret;
}
static int get_moov_size(AVFormatContext *s)
{
int ret;
AVIOContext *moov_buf;
MOVMuxContext *mov = s->priv_data;
if ((ret = ffio_open_null_buf(&moov_buf)) < 0)
return ret;
mov_write_moov_tag(moov_buf, mov, s);
return ffio_close_null_buf(moov_buf);
}
static int get_sidx_size(AVFormatContext *s)
{
int ret;
AVIOContext *buf;
MOVMuxContext *mov = s->priv_data;
if ((ret = ffio_open_null_buf(&buf)) < 0)
return ret;
mov_write_sidx_tags(buf, mov, -1, 0);
return ffio_close_null_buf(buf);
}
/*
* This function gets the moov size if moved to the top of the file: the chunk
* offset table can switch between stco (32-bit entries) to co64 (64-bit
* entries) when the moov is moved to the beginning, so the size of the moov
* would change. It also updates the chunk offset tables.
*/
static int compute_moov_size(AVFormatContext *s)
{
int i, moov_size, moov_size2;
MOVMuxContext *mov = s->priv_data;
moov_size = get_moov_size(s);
if (moov_size < 0)
return moov_size;
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset += moov_size;
moov_size2 = get_moov_size(s);
if (moov_size2 < 0)
return moov_size2;
/* if the size changed, we just switched from stco to co64 and need to
* update the offsets */
if (moov_size2 != moov_size)
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset += moov_size2 - moov_size;
return moov_size2;
}
static int compute_sidx_size(AVFormatContext *s)
{
int i, sidx_size;
MOVMuxContext *mov = s->priv_data;
sidx_size = get_sidx_size(s);
if (sidx_size < 0)
return sidx_size;
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset += sidx_size;
return sidx_size;
}
static int shift_data(AVFormatContext *s)
{
int ret = 0, moov_size;
MOVMuxContext *mov = s->priv_data;
int64_t pos, pos_end = avio_tell(s->pb);
uint8_t *buf, *read_buf[2];
int read_buf_id = 0;
int read_size[2];
AVIOContext *read_pb;
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
moov_size = compute_sidx_size(s);
else
moov_size = compute_moov_size(s);
if (moov_size < 0)
return moov_size;
buf = av_malloc(moov_size * 2);
if (!buf)
return AVERROR(ENOMEM);
read_buf[0] = buf;
read_buf[1] = buf + moov_size;
/* Shift the data: the AVIO context of the output can only be used for
* writing, so we re-open the same output, but for reading. It also avoids
* a read/seek/write/seek back and forth. */
avio_flush(s->pb);
ret = avio_open(&read_pb, s->filename, AVIO_FLAG_READ);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Unable to re-open %s output file for "
"the second pass (faststart)\n", s->filename);
goto end;
}
/* mark the end of the shift to up to the last data we wrote, and get ready
* for writing */
pos_end = avio_tell(s->pb);
avio_seek(s->pb, mov->reserved_moov_pos + moov_size, SEEK_SET);
/* start reading at where the new moov will be placed */
avio_seek(read_pb, mov->reserved_moov_pos, SEEK_SET);
pos = avio_tell(read_pb);
#define READ_BLOCK do { \
read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], moov_size); \
read_buf_id ^= 1; \
} while (0)
/* shift data by chunk of at most moov_size */
READ_BLOCK;
do {
int n;
READ_BLOCK;
n = read_size[read_buf_id];
if (n <= 0)
break;
avio_write(s->pb, read_buf[read_buf_id], n);
pos += n;
} while (pos < pos_end);
avio_close(read_pb);
end:
av_free(buf);
return ret;
}
static int mov_write_trailer(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
AVIOContext *pb = s->pb;
int res = 0;
int i;
int64_t moov_pos;
/*
* Before actually writing the trailer, make sure that there are no
* dangling subtitles, that need a terminating sample.
*/
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *trk = &mov->tracks[i];
if (trk->enc->codec_id == AV_CODEC_ID_MOV_TEXT &&
!trk->last_sample_is_subtitle_end) {
mov_write_subtitle_end_packet(s, i, trk->track_duration);
trk->last_sample_is_subtitle_end = 1;
}
}
// If there were no chapters when the header was written, but there
// are chapters now, write them in the trailer. This only works
// when we are not doing fragments.
if (!mov->chapter_track && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters) {
mov->chapter_track = mov->nb_streams++;
if ((res = mov_create_chapter_track(s, mov->chapter_track)) < 0)
goto error;
}
}
if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
moov_pos = avio_tell(pb);
/* Write size of mdat tag */
if (mov->mdat_size + 8 <= UINT32_MAX) {
avio_seek(pb, mov->mdat_pos, SEEK_SET);
avio_wb32(pb, mov->mdat_size + 8);
} else {
/* overwrite 'wide' placeholder atom */
avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
/* special value: real atom size will be 64 bit value after
* tag field */
avio_wb32(pb, 1);
ffio_wfourcc(pb, "mdat");
avio_wb64(pb, mov->mdat_size + 16);
}
avio_seek(pb, mov->reserved_moov_size > 0 ? mov->reserved_moov_pos : moov_pos, SEEK_SET);
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
av_log(s, AV_LOG_INFO, "Starting second pass: moving the moov atom to the beginning of the file\n");
res = shift_data(s);
if (res == 0) {
avio_seek(pb, mov->reserved_moov_pos, SEEK_SET);
mov_write_moov_tag(pb, mov, s);
}
} else if (mov->reserved_moov_size > 0) {
int64_t size;
mov_write_moov_tag(pb, mov, s);
size = mov->reserved_moov_size - (avio_tell(pb) - mov->reserved_moov_pos);
if (size < 8){
av_log(s, AV_LOG_ERROR, "reserved_moov_size is too small, needed %"PRId64" additional\n", 8-size);
return -1;
}
avio_wb32(pb, size);
ffio_wfourcc(pb, "free");
ffio_fill(pb, 0, size - 8);
avio_seek(pb, moov_pos, SEEK_SET);
} else {
mov_write_moov_tag(pb, mov, s);
}
} else {
mov_flush_fragment(s);
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset = 0;
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
av_log(s, AV_LOG_INFO, "Starting second pass: inserting sidx atoms\n");
res = shift_data(s);
if (res == 0) {
int64_t end = avio_tell(pb);
avio_seek(pb, mov->reserved_moov_pos, SEEK_SET);
mov_write_sidx_tags(pb, mov, -1, 0);
avio_seek(pb, end, SEEK_SET);
mov_write_mfra_tag(pb, mov);
}
} else {
mov_write_mfra_tag(pb, mov);
}
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->flags & FF_MOV_FLAG_FRAGMENT &&
mov->tracks[i].vc1_info.struct_offset && s->pb->seekable) {
int64_t off = avio_tell(pb);
uint8_t buf[7];
if (mov_write_dvc1_structs(&mov->tracks[i], buf) >= 0) {
avio_seek(pb, mov->tracks[i].vc1_info.struct_offset, SEEK_SET);
avio_write(pb, buf, 7);
avio_seek(pb, off, SEEK_SET);
}
}
}
error:
mov_free(s);
return res;
}
#if CONFIG_MOV_MUXER
MOV_CLASS(mov)
AVOutputFormat ff_mov_muxer = {
.name = "mov",
.long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
.extensions = "mov",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){
ff_codec_movvideo_tags, ff_codec_movaudio_tags, 0
},
.priv_class = &mov_muxer_class,
};
#endif
#if CONFIG_TGP_MUXER
MOV_CLASS(tgp)
AVOutputFormat ff_tgp_muxer = {
.name = "3gp",
.long_name = NULL_IF_CONFIG_SMALL("3GP (3GPP file format)"),
.extensions = "3gp",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AMR_NB,
.video_codec = AV_CODEC_ID_H263,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
.priv_class = &tgp_muxer_class,
};
#endif
#if CONFIG_MP4_MUXER
MOV_CLASS(mp4)
AVOutputFormat ff_mp4_muxer = {
.name = "mp4",
.long_name = NULL_IF_CONFIG_SMALL("MP4 (MPEG-4 Part 14)"),
.mime_type = "application/mp4",
.extensions = "mp4",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &mp4_muxer_class,
};
#endif
#if CONFIG_PSP_MUXER
MOV_CLASS(psp)
AVOutputFormat ff_psp_muxer = {
.name = "psp",
.long_name = NULL_IF_CONFIG_SMALL("PSP MP4 (MPEG-4 Part 14)"),
.extensions = "mp4,psp",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &psp_muxer_class,
};
#endif
#if CONFIG_TG2_MUXER
MOV_CLASS(tg2)
AVOutputFormat ff_tg2_muxer = {
.name = "3g2",
.long_name = NULL_IF_CONFIG_SMALL("3GP2 (3GPP2 file format)"),
.extensions = "3g2",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AMR_NB,
.video_codec = AV_CODEC_ID_H263,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
.priv_class = &tg2_muxer_class,
};
#endif
#if CONFIG_IPOD_MUXER
MOV_CLASS(ipod)
AVOutputFormat ff_ipod_muxer = {
.name = "ipod",
.long_name = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 (MPEG-4 Part 14)"),
.mime_type = "application/mp4",
.extensions = "m4v,m4a",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = AV_CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_ipod_tags, 0 },
.priv_class = &ipod_muxer_class,
};
#endif
#if CONFIG_ISMV_MUXER
MOV_CLASS(ismv)
AVOutputFormat ff_ismv_muxer = {
.name = "ismv",
.long_name = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming)"),
.mime_type = "application/mp4",
.extensions = "ismv,isma",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = AV_CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &ismv_muxer_class,
};
#endif
#if CONFIG_F4V_MUXER
MOV_CLASS(f4v)
AVOutputFormat ff_f4v_muxer = {
.name = "f4v",
.long_name = NULL_IF_CONFIG_SMALL("F4V Adobe Flash Video"),
.mime_type = "application/f4v",
.extensions = "f4v",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = AV_CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.codec_tag = (const AVCodecTag* const []){ codec_f4v_tags, 0 },
.priv_class = &f4v_muxer_class,
};
#endif