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FFmpeg/libavformat/movenc.c

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/*
* 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 "movenc.h"
#include "avformat.h"
#include "avio_internal.h"
#include "riff.h"
#include "avio.h"
#include "isom.h"
#include "avc.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#include "internal.h"
#include "libavutil/avstring.h"
#include "libavutil/intfloat_readwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "rtpenc.h"
#undef NDEBUG
#include <assert.h>
static const AVOption options[] = {
{ "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.dbl = 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, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ 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,\
};
//FIXME support 64 bit variant with wide placeholders
static int64_t updateSize(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;
}
/* Chunk offset atom */
static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
{
int i;
int mode64 = 0; // use 32 bit size variant if possible
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
if (pos > UINT32_MAX) {
mode64 = 1;
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);
else
avio_wb32(pb, track->cluster[i].pos);
}
return updateSize(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) {
int sSize = track->cluster[0].size/track->cluster[0].entries;
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 updateSize(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].samplesInChunk && track->cluster[i].chunkNum)
{
avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
avio_wb32(pb, track->cluster[i].samplesInChunk); // samples per chunk
avio_wb32(pb, 0x1); // sample description index
oldval = track->cluster[i].samplesInChunk;
index++;
}
}
curpos = avio_tell(pb);
avio_seek(pb, entryPos, SEEK_SET);
avio_wb32(pb, index); // rewrite size
avio_seek(pb, curpos, SEEK_SET);
return updateSize(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 updateSize(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->vosLen < 7)
return -1;
avio_wb32(pb, 11);
ffio_wfourcc(pb, "dac3");
init_get_bits(&gbc, track->vosData+4, (track->vosLen-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;
}
/**
* This function writes extradata "as is".
* Extradata must be formated 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 void putDescr(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;
for (i = 0; i < track->entry; i++)
size += track->cluster[i].size;
return size * 8 * track->timescale / track->trackDuration;
}
static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
{
int64_t pos = avio_tell(pb);
int decoderSpecificInfoLen = track->vosLen ? 5+track->vosLen : 0;
unsigned avg_bitrate;
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, "esds");
avio_wb32(pb, 0); // Version
// ES descriptor
putDescr(pb, 0x03, 3 + 5+13 + decoderSpecificInfoLen + 5+1);
avio_wb16(pb, track->trackID);
avio_w8(pb, 0x00); // flags (= no flags)
// DecoderConfig descriptor
putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
// Object type indication
if ((track->enc->codec_id == CODEC_ID_MP2 ||
track->enc->codec_id == 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_type == AVMEDIA_TYPE_AUDIO)
avio_w8(pb, 0x15); // flags (= Audiostream)
else
avio_w8(pb, 0x11); // flags (= Visualstream)
avio_w8(pb, track->enc->rc_buffer_size>>(3+16)); // Buffersize DB (24 bits)
avio_wb16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // 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->vosLen) {
// DecoderSpecific info descriptor
putDescr(pb, 0x05, track->vosLen);
avio_write(pb, track->vosData, track->vosLen);
}
// SL descriptor
putDescr(pb, 0x06, 1);
avio_w8(pb, 0x02);
return updateSize(pb, pos);
}
static int mov_pcm_le_gt16(enum CodecID codec_id)
{
return codec_id == CODEC_ID_PCM_S24LE ||
codec_id == CODEC_ID_PCM_S32LE ||
codec_id == CODEC_ID_PCM_F32LE ||
codec_id == CODEC_ID_PCM_F64LE;
}
static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
{
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);
ff_put_wav_header(pb, track->enc);
return updateSize(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");
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "frma");
avio_wl32(pb, track->tag);
if (track->enc->codec_id == 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 (track->enc->codec_id == CODEC_ID_AMR_NB) {
mov_write_amr_tag(pb, track);
} else if (track->enc->codec_id == CODEC_ID_AC3) {
mov_write_ac3_tag(pb, track);
} else if (track->enc->codec_id == CODEC_ID_ALAC) {
mov_write_extradata_tag(pb, track);
} else if (track->enc->codec_id == CODEC_ID_ADPCM_MS ||
track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
mov_write_ms_tag(pb, track);
}
avio_wb32(pb, 8); /* size */
avio_wb32(pb, 0); /* null tag */
return updateSize(pb, pos);
}
static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, track->vosLen+8);
ffio_wfourcc(pb, "glbl");
avio_write(pb, track->vosData, track->vosLen);
return 8+track->vosLen;
}
/**
* Compute flags for 'lpcm' tag.
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
*/
static int mov_get_lpcm_flags(enum CodecID codec_id)
{
switch (codec_id) {
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_F64BE:
return 11;
case CODEC_ID_PCM_F32LE:
case CODEC_ID_PCM_F64LE:
return 9;
case CODEC_ID_PCM_U8:
return 10;
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S24BE:
case CODEC_ID_PCM_S32BE:
return 14;
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S24LE:
case CODEC_ID_PCM_S32LE:
return 12;
default:
return 0;
}
}
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) ||
track->enc->codec_id == CODEC_ID_ADPCM_MS ||
track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
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_dbl2int(track->timescale));
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->sampleSize);
avio_wb32(pb, track->enc->frame_size);
} else {
if (track->mode == MODE_MOV) {
avio_wb16(pb, track->enc->channels);
if (track->enc->codec_id == CODEC_ID_PCM_U8 ||
track->enc->codec_id == CODEC_ID_PCM_S8)
avio_wb16(pb, 8); /* bits per sample */
else
avio_wb16(pb, 16);
avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
} else { /* reserved for mp4/3gp */
avio_wb16(pb, 2);
avio_wb16(pb, 16);
avio_wb16(pb, 0);
}
avio_wb16(pb, 0); /* packet size (= 0) */
avio_wb16(pb, track->timescale); /* Time scale */
avio_wb16(pb, 0); /* Reserved */
}
if(version == 1) { /* SoundDescription V1 extended info */
avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
avio_wb32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */
avio_wb32(pb, track->sampleSize); /* Bytes per frame */
avio_wb32(pb, 2); /* Bytes per sample */
}
if(track->mode == MODE_MOV &&
(track->enc->codec_id == CODEC_ID_AAC ||
track->enc->codec_id == CODEC_ID_AC3 ||
track->enc->codec_id == CODEC_ID_AMR_NB ||
track->enc->codec_id == CODEC_ID_ALAC ||
track->enc->codec_id == CODEC_ID_ADPCM_MS ||
track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV ||
mov_pcm_le_gt16(track->enc->codec_id)))
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 == CODEC_ID_AMR_NB)
mov_write_amr_tag(pb, track);
else if(track->enc->codec_id == CODEC_ID_AC3)
mov_write_ac3_tag(pb, track);
else if(track->enc->codec_id == CODEC_ID_ALAC)
mov_write_extradata_tag(pb, track);
else if(track->vosLen > 0)
mov_write_glbl_tag(pb, track);
return updateSize(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;
}
/* TODO: No idea about these values */
static int mov_write_svq3_tag(AVIOContext *pb)
{
avio_wb32(pb, 0x15);
ffio_wfourcc(pb, "SMI ");
ffio_wfourcc(pb, "SEQH");
avio_wb32(pb, 0x5);
avio_wb32(pb, 0xe2c0211d);
avio_wb32(pb, 0xc0000000);
avio_w8(pb, 0);
return 0x15;
}
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->vosData, track->vosLen);
return updateSize(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");
avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
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->vosData + 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->vosData[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 == CODEC_ID_H264) tag = MKTAG('a','v','c','1');
else if (track->enc->codec_id == CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
else if (track->enc->codec_id == CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
else if (track->enc->codec_id == CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
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');
return tag;
}
static const AVCodecTag codec_ipod_tags[] = {
{ CODEC_ID_H264, MKTAG('a','v','c','1') },
{ CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ CODEC_ID_ALAC, MKTAG('a','l','a','c') },
{ CODEC_ID_AC3, MKTAG('a','c','-','3') },
{ CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
{ CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
{ 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, "m4v"))
av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
"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 == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
else tag = MKTAG('d','v','c',' ');
else if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
else if (track->enc->pix_fmt == 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->enc->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->enc->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 const struct {
enum PixelFormat pix_fmt;
uint32_t tag;
unsigned bps;
} mov_pix_fmt_tags[] = {
{ PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
{ PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
{ PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
{ PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
{ PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
{ PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
{ PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
{ PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
{ PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
{ PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
{ PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
{ PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
{ PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
{ 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;
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;
break;
}
}
return tag;
}
static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
(track->enc->codec_id == CODEC_ID_DVVIDEO ||
track->enc->codec_id == CODEC_ID_RAWVIDEO ||
track->enc->codec_id == CODEC_ID_H263 ||
av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
if (track->enc->codec_id == CODEC_ID_DVVIDEO)
tag = mov_get_dv_codec_tag(s, track);
else if (track->enc->codec_id == CODEC_ID_RAWVIDEO)
tag = mov_get_rawvideo_codec_tag(s, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
tag = ff_codec_get_tag(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(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[] = {
{ CODEC_ID_H263, MKTAG('s','2','6','3') },
{ CODEC_ID_H264, MKTAG('a','v','c','1') },
{ CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
{ CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
{ CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
{ CODEC_ID_NONE, 0 },
};
static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
tag = mp4_get_codec_tag(s, track);
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
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 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->extradata_size)
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
return updateSize(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 int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
char compressor_name[32];
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 == 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) */
memset(compressor_name,0,32);
/* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
av_strlcpy(compressor_name,track->enc->codec->name,32);
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 == CODEC_ID_H263)
mov_write_d263_tag(pb);
else if(track->enc->codec_id == CODEC_ID_SVQ3)
mov_write_svq3_tag(pb);
else if(track->enc->codec_id == CODEC_ID_DNXHD)
mov_write_avid_tag(pb, track);
else if(track->enc->codec_id == CODEC_ID_H264) {
mov_write_avcc_tag(pb, track);
if(track->mode == MODE_IPOD)
mov_write_uuid_tag_ipod(pb);
} else if(track->vosLen > 0)
mov_write_glbl_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 updateSize(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 updateSize(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);
return updateSize(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((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->sampleCount;
stts_entries[0].duration = 1;
entries = 1;
} else {
stts_entries = av_malloc(track->entry * sizeof(*stts_entries)); /* worst case */
for (i=0; i<track->entry; i++) {
int64_t duration = i + 1 == track->entry ?
track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */
track->cluster[i+1].dts - track->cluster[i].dts;
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 */
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->hasKeyframes && track->hasKeyframes < 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 updateSize(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 updateSize(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_gmhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 0x20); /* 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 */
return 0x20;
}
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 mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
{
const char *hdlr, *descr = NULL, *hdlr_type = NULL;
int64_t pos = avio_tell(pb);
if (!track) { /* no media --> data handler */
hdlr = "dhlr";
hdlr_type = "url ";
descr = "DataHandler";
} else {
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 (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
else hdlr_type = "text";
descr = "SubtitleHandler";
} else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
hdlr_type = "hint";
descr = "HintHandler";
}
}
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 updateSize(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')) mov_write_gmhd_tag(pb);
else mov_write_nmhd_tag(pb);
} else if (track->tag == MKTAG('r','t','p',' ')) {
mov_write_hmhd_tag(pb);
}
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 updateSize(pb, pos);
}
static int mov_write_mdhd_tag(AVIOContext *pb, MOVTrack *track)
{
int version = track->trackDuration < INT32_MAX ? 0 : 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) */
(version == 1) ? avio_wb64(pb, track->trackDuration) : avio_wb32(pb, track->trackDuration); /* 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, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "mdia");
mov_write_mdhd_tag(pb, track);
mov_write_hdlr_tag(pb, track);
mov_write_minf_tag(pb, track);
return updateSize(pb, pos);
}
static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
{
int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
track->timescale, AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
(version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
ffio_wfourcc(pb, "tkhd");
avio_w8(pb, version);
avio_wb24(pb, 0xf); /* flags (track enabled) */
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->trackID); /* track-id */
avio_wb32(pb, 0); /* reserved */
(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, st ? st->codec->codec_type : 0); /* 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 */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x40000000); /* reserved */
/* 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, "enof");
avio_wb32(pb, 0);
avio_wb32(pb, track->enc->width << 16);
avio_wb32(pb, track->enc->height << 16);
return updateSize(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, MOVTrack *track)
{
int64_t duration = av_rescale_rnd(track->trackDuration, 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 */
if (version == 1) {
avio_wb64(pb, delay);
avio_wb64(pb, -1);
} else {
avio_wb32(pb, delay);
avio_wb32(pb, -1);
}
avio_wb32(pb, 0x00010000);
}
/* 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, AVFormatContext *ctx, int index)
{
char buf[1000] = "";
int len;
ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0]->codec, NULL, NULL, 0, 0, ctx);
av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", index);
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_trak_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "trak");
mov_write_tkhd_tag(pb, track, st);
if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS || track->cluster[0].dts)
mov_write_edts_tag(pb, track); // PSP Movies require edts box
if (track->tref_tag)
mov_write_tref_tag(pb, track);
mov_write_mdia_tag(pb, 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->rtp_ctx, track->trackID);
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO && track->mode == MODE_MOV) {
double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
if (0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)
mov_write_tapt_tag(pb, track);
};
return updateSize(pb, pos);
}
#if 0
/* TODO: Not sorted out, but not necessary either */
static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
{
avio_wb32(pb, 0x15); /* size */
ffio_wfourcc(pb, "iods");
avio_wb32(pb, 0); /* version & flags */
avio_wb16(pb, 0x1007);
avio_w8(pb, 0);
avio_wb16(pb, 0x4fff);
avio_wb16(pb, 0xfffe);
avio_wb16(pb, 0x01ff);
return 0x15;
}
#endif
static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int maxTrackID = 1, i;
int64_t maxTrackLenTemp, maxTrackLen = 0;
int version;
for (i=0; i<mov->nb_streams; i++) {
if(mov->tracks[i].entry > 0) {
maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration,
MOV_TIMESCALE,
mov->tracks[i].timescale,
AV_ROUND_UP);
if(maxTrackLen < maxTrackLenTemp)
maxTrackLen = maxTrackLenTemp;
if(maxTrackID < mov->tracks[i].trackID)
maxTrackID = mov->tracks[i].trackID;
}
}
version = maxTrackLen < UINT32_MAX ? 0 : 1;
(version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 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, maxTrackLen) : avio_wb32(pb, maxTrackLen); /* 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 */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x40000000); /* reserved */
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, maxTrackID+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= updateSize(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 track number */
static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
int size = 0, track = t ? atoi(t->value) : 0;
if (track) {
avio_wb32(pb, 32); /* size */
ffio_wfourcc(pb, "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 number
avio_wb16(pb, 0); // total track number
avio_wb16(pb, 0); // empty
size = 32;
}
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);
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_trkn_tag(pb, mov, s);
return updateSize(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 = updateSize(pb, pos);
return size;
}
static int utf8len(const uint8_t *b)
{
int len=0;
int val;
while(*b){
GET_UTF8(val, *b++, return -1;)
len++;
}
return len;
}
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 updateSize(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 updateSize(pb, pos);
}
static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
AVIOContext *pb_buf;
int i, ret, size;
uint8_t *buf;
for (i = 0; i < s->nb_streams; i++)
if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
return 0;
}
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);
mov_write_string_metadata(s, pb_buf, "\251des", "comment" , 0);
mov_write_string_metadata(s, pb_buf, "\251gen", "genre" , 0);
mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright" , 0);
} else {
/* iTunes meta data */
mov_write_meta_tag(pb_buf, mov, s);
}
if (s->nb_chapters)
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)
{
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 */
mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
// snprintf(dt,32,"%04d/%02d/%02d %02d:%02d:%02d",t_st->tm_year+1900,t_st->tm_mon+1,t_st->tm_mday,t_st->tm_hour,t_st->tm_min,t_st->tm_sec);
mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
updateSize(pb, pos2);
return updateSize(pb, pos);
}
return 0;
}
static void build_chunks(MOVTrack *trk)
{
int i;
MOVIentry *chunk= &trk->cluster[0];
chunk->chunkNum= 1;
trk->chunkCount= 1;
for(i=1; i<trk->entry; i++){
if(chunk->pos + chunk->chunkSize == trk->cluster[i].pos){
chunk->chunkSize += trk->cluster[i].size;
chunk->samplesInChunk += trk->cluster[i].entries;
}else{
trk->cluster[i].chunkNum = chunk->chunkNum+1;
chunk=&trk->cluster[i];
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) continue;
mov->tracks[i].time = mov->time;
mov->tracks[i].trackID = i+1;
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].trackID;
}
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].trackID;
}
}
mov_write_mvhd_tag(pb, mov);
//mov_write_iods_tag(pb, mov);
for (i=0; i<mov->nb_streams; i++) {
if(mov->tracks[i].entry > 0) {
mov_write_trak_tag(pb, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
}
}
if (mov->mode == MODE_PSP)
mov_write_uuidusmt_tag(pb, s);
else
mov_write_udta_tag(pb, mov, s);
return updateSize(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 == CODEC_ID_H264)
has_h264 = 1;
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "ftyp");
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)
ffio_wfourcc(pb, "isom");
else if (mov->mode == MODE_IPOD)
ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
else
ffio_wfourcc(pb, "qt ");
avio_wb32(pb, minor);
if(mov->mode == MODE_MOV)
ffio_wfourcc(pb, "qt ");
else{
ffio_wfourcc(pb, "isom");
ffio_wfourcc(pb, "iso2");
if(has_h264)
ffio_wfourcc(pb, "avc1");
}
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");
return updateSize(pb, pos);
}
static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
{
AVCodecContext *VideoCodec = s->streams[0]->codec;
AVCodecContext *AudioCodec = s->streams[1]->codec;
int AudioRate = AudioCodec->sample_rate;
int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);
int audio_kbitrate= AudioCodec->bit_rate / 1000;
int video_kbitrate= FFMIN(VideoCodec->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, AudioRate);
avio_wb32(pb, AudioCodec->channels);
avio_wb32(pb, 0x34); /* size */
ffio_wfourcc(pb, "VPRF"); /* video */
avio_wb32(pb, 0x0);
avio_wb32(pb, 0x1); /* TrackID */
if (VideoCodec->codec_id == 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, FrameRate);
avio_wb32(pb, FrameRate);
avio_wb16(pb, VideoCodec->width);
avio_wb16(pb, VideoCodec->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;
}
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 samplesInChunk = 0;
int size= pkt->size;
if (!s->pb->seekable) return 0; /* Can't handle that */
if (!size) return 0; /* Discard 0 sized packets */
if (enc->codec_id == 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 && samplesInChunk < 100) {
len += packed_size[(pkt->data[len] >> 3) & 0x0F];
samplesInChunk++;
}
if(samplesInChunk > 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 == CODEC_ID_ADPCM_MS ||
enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
samplesInChunk = enc->frame_size;
} else if (trk->sampleSize)
samplesInChunk = size/trk->sampleSize;
else
samplesInChunk = 1;
/* copy extradata if it exists */
if (trk->vosLen == 0 && enc->extradata_size > 0) {
trk->vosLen = enc->extradata_size;
trk->vosData = av_malloc(trk->vosLen);
memcpy(trk->vosData, enc->extradata, trk->vosLen);
}
if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {
/* from x264 or from bytestream h264 */
/* nal reformating needed */
size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
} else if (enc->codec_id == CODEC_ID_AAC && pkt->size > 2 &&
(AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
av_log(s, AV_LOG_ERROR, "malformated aac bitstream, use -absf aac_adtstoasc\n");
return -1;
} else {
avio_write(pb, pkt->data, size);
}
if ((enc->codec_id == CODEC_ID_DNXHD ||
enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {
/* copy frame to create needed atoms */
trk->vosLen = size;
trk->vosData = av_malloc(size);
if (!trk->vosData)
return AVERROR(ENOMEM);
memcpy(trk->vosData, pkt->data, size);
}
if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {
trk->cluster = av_realloc_f(trk->cluster, sizeof(*trk->cluster), (trk->entry + MOV_INDEX_CLUSTER_SIZE));
if (!trk->cluster)
return -1;
}
trk->cluster[trk->entry].pos = avio_tell(pb) - size;
trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
trk->cluster[trk->entry].chunkSize =
trk->cluster[trk->entry].size = size;
trk->cluster[trk->entry].entries = samplesInChunk;
trk->cluster[trk->entry].dts = pkt->dts;
trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;
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 (pkt->flags & AV_PKT_FLAG_KEY) {
if (mov->mode == MODE_MOV && enc->codec_id == 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->hasKeyframes++;
}
trk->entry++;
trk->sampleCount += samplesInChunk;
mov->mdat_size += size;
avio_flush(pb);
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry);
return 0;
}
// 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 void mov_create_chapter_track(AVFormatContext *s, int tracknum)
{
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);
track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
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))) {
len = strlen(t->value);
pkt.size = len+2;
pkt.data = av_malloc(pkt.size);
AV_WB16(pkt.data, len);
memcpy(pkt.data+2, t->value, len);
ff_mov_write_packet(s, &pkt);
av_freep(&pkt.data);
}
}
}
static int mov_write_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
MOVMuxContext *mov = s->priv_data;
AVDictionaryEntry *t;
int i, hint_track = 0;
if (!s->pb->seekable) {
av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
return -1;
}
/* Default mode == MP4 */
mov->mode = MODE_MP4;
if (s->oformat != NULL) {
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;
mov_write_ftyp_tag(pb,s);
if (mov->mode == MODE_PSP) {
if (s->nb_streams != 2) {
av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
return -1;
}
mov_write_uuidprof_tag(pb,s);
}
}
mov->nb_streams = s->nb_streams;
if (mov->mode & (MODE_MOV|MODE_IPOD) && s->nb_chapters)
mov->chapter_track = mov->nb_streams++;
#if FF_API_FLAG_RTP_HINT
if (s->flags & AVFMT_FLAG_RTP_HINT) {
av_log(s, AV_LOG_WARNING, "The RTP_HINT flag is deprecated, enable it "
"via the -movflags rtphint muxer option "
"instead.\n");
mov->flags |= FF_MOV_FLAG_RTP_HINT;
}
#endif
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++;
}
}
}
mov->tracks = av_mallocz(mov->nb_streams*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->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, "track %d: could not find tag, "
"codec not currently supported in container\n", i);
goto error;
}
/* If hinting of this track is enabled by a later hint track,
* this is updated. */
track->hint_track = -1;
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");
goto error;
}
track->height = track->tag>>24 == 'n' ? 486 : 576;
}
track->timescale = st->codec->time_base.den;
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_ERROR, "track %d: codec frame size is not set\n", i);
goto error;
}else if(st->codec->codec_id == CODEC_ID_ADPCM_MS ||
st->codec->codec_id == CODEC_ID_ADPCM_IMA_WAV){
if (!st->codec->block_align) {
av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);
goto error;
}
track->sampleSize = st->codec->block_align;
}else if(st->codec->frame_size > 1){ /* assume compressed audio */
track->audio_vbr = 1;
}else{
st->codec->frame_size = 1;
track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;
}
if (track->mode != MODE_MOV) {
if (track->timescale > UINT16_MAX) {
av_log(s, AV_LOG_ERROR, "track %d: output format does not support "
"sample rate %dhz\n", i, track->timescale);
goto error;
}
if (track->enc->codec_id == 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);
goto error;
}
}
}else if(st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE){
track->timescale = st->codec->time_base.den;
}
if (!track->height)
track->height = st->codec->height;
av_set_pts_info(st, 64, 1, track->timescale);
}
if(mov->reserved_moov_size){
mov->reserved_moov_pos= avio_tell(pb);
avio_skip(pb, mov->reserved_moov_size);
}
mov_write_mdat_tag(pb, mov);
#if FF_API_TIMESTAMP
if (s->timestamp)
mov->time = s->timestamp;
else
#endif
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
mov->time = ff_iso8601_to_unix_time(t->value);
mov->time += 0x7C25B080; //1970 based -> 1904 based
if (mov->chapter_track)
mov_create_chapter_track(s, mov->chapter_track);
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) {
ff_mov_init_hinting(s, hint_track, i);
hint_track++;
}
}
}
avio_flush(pb);
return 0;
error:
av_freep(&mov->tracks);
return -1;
}
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 = 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);
avio_wb32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */
ffio_wfourcc(pb, "mdat");
avio_wb64(pb, mov->mdat_size+16);
}
avio_seek(pb, mov->reserved_moov_size ? mov->reserved_moov_pos : moov_pos, SEEK_SET);
mov_write_moov_tag(pb, mov, s);
if(mov->reserved_moov_size){
int64_t 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 %Ld additional\n", 8-size);
return -1;
}
avio_wb32(pb, size);
ffio_wfourcc(pb, "free");
for(i=0; i<size; i++)
avio_w8(pb, 0);
avio_seek(pb, moov_pos, SEEK_SET);
}
if (mov->chapter_track)
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]);
av_freep(&mov->tracks[i].cluster);
if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);
}
avio_flush(pb);
av_freep(&mov->tracks);
return res;
}
#if CONFIG_MOV_MUXER
MOV_CLASS(mov)
AVOutputFormat ff_mov_muxer = {
.name = "mov",
.long_name = NULL_IF_CONFIG_SMALL("MOV format"),
.extensions = "mov",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = CODEC_ID_AAC,
#if CONFIG_LIBX264_ENCODER
.video_codec = CODEC_ID_H264,
#else
.video_codec = CODEC_ID_MPEG4,
#endif
.write_header = mov_write_header,
.write_packet = ff_mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, 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 format"),
.extensions = "3gp",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = CODEC_ID_AMR_NB,
.video_codec = CODEC_ID_H263,
.write_header = mov_write_header,
.write_packet = ff_mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.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 format"),
.mime_type = "application/mp4",
.extensions = "mp4",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = CODEC_ID_AAC,
#if CONFIG_LIBX264_ENCODER
.video_codec = CODEC_ID_H264,
#else
.video_codec = CODEC_ID_MPEG4,
#endif
.write_header = mov_write_header,
.write_packet = ff_mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.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 format"),
.extensions = "mp4,psp",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = CODEC_ID_AAC,
#if CONFIG_LIBX264_ENCODER
.video_codec = CODEC_ID_H264,
#else
.video_codec = CODEC_ID_MPEG4,
#endif
.write_header = mov_write_header,
.write_packet = ff_mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.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 format"),
.extensions = "3g2",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = CODEC_ID_AMR_NB,
.video_codec = CODEC_ID_H263,
.write_header = mov_write_header,
.write_packet = ff_mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.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 format"),
.mime_type = "application/mp4",
.extensions = "m4v,m4a",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = CODEC_ID_AAC,
.video_codec = CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = ff_mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},
.priv_class = &ipod_muxer_class,
};
#endif