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FFmpeg/libavformat/movenc.c
Stefano Sabatini 9106a698e7 Rename bitstream.h to get_bits.h. 
Originally committed as revision 18494 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-13 16:20:26 +00:00

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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 "avformat.h"
#include "riff.h"
#include "avio.h"
#include "isom.h"
#include "avc.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#undef NDEBUG
#include <assert.h>
#define MOV_INDEX_CLUSTER_SIZE 16384
#define globalTimescale 1000
#define MODE_MP4 0x01
#define MODE_MOV 0x02
#define MODE_3GP 0x04
#define MODE_PSP 0x08 // example working PSP command line:
// ffmpeg -i testinput.avi -f psp -r 14.985 -s 320x240 -b 768 -ar 24000 -ab 32 M4V00001.MP4
#define MODE_3G2 0x10
#define MODE_IPOD 0x20
typedef struct MOVIentry {
unsigned int flags, size;
uint64_t pos;
unsigned int samplesInChunk;
char key_frame;
unsigned int entries;
int64_t cts;
int64_t dts;
} MOVIentry;
typedef struct MOVIndex {
int mode;
int entry;
long timescale;
long time;
int64_t trackDuration;
long sampleCount;
long sampleSize;
int hasKeyframes;
int hasBframes;
int language;
int trackID;
int tag; ///< stsd fourcc
AVCodecContext *enc;
int vosLen;
uint8_t *vosData;
MOVIentry *cluster;
int audio_vbr;
int height; ///< active picture (w/o VBI) height for D-10/IMX
} MOVTrack;
typedef struct MOVMuxContext {
int mode;
int64_t time;
int nb_streams;
int64_t mdat_pos;
uint64_t mdat_size;
long timescale;
MOVTrack *tracks;
} MOVMuxContext;
//FIXME support 64 bit variant with wide placeholders
static int64_t updateSize(ByteIOContext *pb, int64_t pos)
{
int64_t curpos = url_ftell(pb);
url_fseek(pb, pos, SEEK_SET);
put_be32(pb, curpos - pos); /* rewrite size */
url_fseek(pb, curpos, SEEK_SET);
return curpos - pos;
}
/* Chunk offset atom */
static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack *track)
{
int i;
int mode64 = 0; // use 32 bit size variant if possible
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
if (pos > UINT32_MAX) {
mode64 = 1;
put_tag(pb, "co64");
} else
put_tag(pb, "stco");
put_be32(pb, 0); /* version & flags */
put_be32(pb, track->entry); /* entry count */
for (i=0; i<track->entry; i++) {
if(mode64 == 1)
put_be64(pb, track->cluster[i].pos);
else
put_be32(pb, track->cluster[i].pos);
}
return updateSize(pb, pos);
}
/* Sample size atom */
static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack *track)
{
int equalChunks = 1;
int i, j, entries = 0, tst = -1, oldtst = -1;
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "stsz");
put_be32(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;
put_be32(pb, sSize); // sample size
put_be32(pb, entries); // sample count
}
else {
put_be32(pb, 0); // sample size
put_be32(pb, entries); // sample count
for (i=0; i<track->entry; i++) {
for (j=0; j<track->cluster[i].entries; j++) {
put_be32(pb, track->cluster[i].size /
track->cluster[i].entries);
}
}
}
return updateSize(pb, pos);
}
/* Sample to chunk atom */
static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack *track)
{
int index = 0, oldval = -1, i;
int64_t entryPos, curpos;
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "stsc");
put_be32(pb, 0); // version & flags
entryPos = url_ftell(pb);
put_be32(pb, track->entry); // entry count
for (i=0; i<track->entry; i++) {
if(oldval != track->cluster[i].samplesInChunk)
{
put_be32(pb, i+1); // first chunk
put_be32(pb, track->cluster[i].samplesInChunk); // samples per chunk
put_be32(pb, 0x1); // sample description index
oldval = track->cluster[i].samplesInChunk;
index++;
}
}
curpos = url_ftell(pb);
url_fseek(pb, entryPos, SEEK_SET);
put_be32(pb, index); // rewrite size
url_fseek(pb, curpos, SEEK_SET);
return updateSize(pb, pos);
}
/* Sync sample atom */
static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t curpos, entryPos;
int i, index = 0;
int64_t pos = url_ftell(pb);
put_be32(pb, 0); // size
put_tag(pb, "stss");
put_be32(pb, 0); // version & flags
entryPos = url_ftell(pb);
put_be32(pb, track->entry); // entry count
for (i=0; i<track->entry; i++) {
if(track->cluster[i].key_frame == 1) {
put_be32(pb, i+1);
index++;
}
}
curpos = url_ftell(pb);
url_fseek(pb, entryPos, SEEK_SET);
put_be32(pb, index); // rewrite size
url_fseek(pb, curpos, SEEK_SET);
return updateSize(pb, pos);
}
static int mov_write_amr_tag(ByteIOContext *pb, MOVTrack *track)
{
put_be32(pb, 0x11); /* size */
if (track->mode == MODE_MOV) put_tag(pb, "samr");
else put_tag(pb, "damr");
put_tag(pb, "FFMP");
put_byte(pb, 0); /* decoder version */
put_be16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
put_byte(pb, 0x00); /* Mode change period (no restriction) */
put_byte(pb, 0x01); /* Frames per sample */
return 0x11;
}
static int mov_write_ac3_tag(ByteIOContext *pb, MOVTrack *track)
{
GetBitContext gbc;
PutBitContext pbc;
uint8_t buf[3];
int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
if (track->vosLen < 7)
return -1;
put_be32(pb, 11);
put_tag(pb, "dac3");
init_get_bits(&gbc, track->vosData+4, track->vosLen-4);
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);
put_buffer(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(ByteIOContext *pb, MOVTrack *track)
{
put_buffer(pb, track->enc->extradata, track->enc->extradata_size);
return track->enc->extradata_size;
}
static int mov_write_enda_tag(ByteIOContext *pb)
{
put_be32(pb, 10);
put_tag(pb, "enda");
put_be16(pb, 1); /* little endian */
return 10;
}
static unsigned int descrLength(unsigned int len)
{
int i;
for(i=1; len>>(7*i); i++);
return len + 1 + i;
}
static void putDescr(ByteIOContext *pb, int tag, unsigned int size)
{
int i= descrLength(size) - size - 2;
put_byte(pb, tag);
for(; i>0; i--)
put_byte(pb, (size>>(7*i)) | 0x80);
put_byte(pb, size & 0x7F);
}
static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack *track) // Basic
{
int64_t pos = url_ftell(pb);
int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;
put_be32(pb, 0); // size
put_tag(pb, "esds");
put_be32(pb, 0); // Version
// ES descriptor
putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +
descrLength(1));
put_be16(pb, track->trackID);
put_byte(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)
put_byte(pb, 0x6B); // 11172-3
else
put_byte(pb, 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 == CODEC_TYPE_AUDIO)
put_byte(pb, 0x15); // flags (= Audiostream)
else
put_byte(pb, 0x11); // flags (= Visualstream)
put_byte(pb, track->enc->rc_buffer_size>>(3+16)); // Buffersize DB (24 bits)
put_be16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // Buffersize DB
put_be32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
if(track->enc->rc_max_rate != track->enc->rc_min_rate || track->enc->rc_min_rate==0)
put_be32(pb, 0); // vbr
else
put_be32(pb, track->enc->rc_max_rate); // avg bitrate
if (track->vosLen) {
// DecoderSpecific info descriptor
putDescr(pb, 0x05, track->vosLen);
put_buffer(pb, track->vosData, track->vosLen);
}
// SL descriptor
putDescr(pb, 0x06, 1);
put_byte(pb, 0x02);
return updateSize(pb, pos);
}
static int mov_write_wave_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "wave");
put_be32(pb, 12); /* size */
put_tag(pb, "frma");
put_le32(pb, track->tag);
if (track->enc->codec_id == CODEC_ID_AAC) {
/* useless atom needed by mplayer, ipod, not needed by quicktime */
put_be32(pb, 12); /* size */
put_tag(pb, "mp4a");
put_be32(pb, 0);
mov_write_esds_tag(pb, track);
} else if (track->enc->codec_id == CODEC_ID_PCM_S24LE ||
track->enc->codec_id == CODEC_ID_PCM_S32LE) {
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);
}
put_be32(pb, 8); /* size */
put_be32(pb, 0); /* null tag */
return updateSize(pb, pos);
}
static int mov_write_glbl_tag(ByteIOContext *pb, MOVTrack *track)
{
put_be32(pb, track->vosLen+8);
put_tag(pb, "glbl");
put_buffer(pb, track->vosData, track->vosLen);
return 8+track->vosLen;
}
static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
int version = track->mode == MODE_MOV &&
(track->audio_vbr ||
track->enc->codec_id == CODEC_ID_PCM_S32LE ||
track->enc->codec_id == CODEC_ID_PCM_S24LE);
put_be32(pb, 0); /* size */
put_le32(pb, track->tag); // store it byteswapped
put_be32(pb, 0); /* Reserved */
put_be16(pb, 0); /* Reserved */
put_be16(pb, 1); /* Data-reference index, XXX == 1 */
/* SoundDescription */
put_be16(pb, version); /* Version */
put_be16(pb, 0); /* Revision level */
put_be32(pb, 0); /* Reserved */
if (track->mode == MODE_MOV) {
put_be16(pb, track->enc->channels);
if (track->enc->codec_id == CODEC_ID_PCM_U8 ||
track->enc->codec_id == CODEC_ID_PCM_S8)
put_be16(pb, 8); /* bits per sample */
else
put_be16(pb, 16);
put_be16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
} else { /* reserved for mp4/3gp */
put_be16(pb, 2);
put_be16(pb, 16);
put_be16(pb, 0);
}
put_be16(pb, 0); /* packet size (= 0) */
put_be16(pb, track->timescale); /* Time scale */
put_be16(pb, 0); /* Reserved */
if(version == 1) { /* SoundDescription V1 extended info */
put_be32(pb, track->enc->frame_size); /* Samples per packet */
put_be32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */
put_be32(pb, track->sampleSize); /* Bytes per frame */
put_be32(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_PCM_S24LE ||
track->enc->codec_id == CODEC_ID_PCM_S32LE ||
track->enc->codec_id == CODEC_ID_ALAC))
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(ByteIOContext *pb)
{
put_be32(pb, 0xf); /* size */
put_tag(pb, "d263");
put_tag(pb, "FFMP");
put_byte(pb, 0); /* decoder version */
/* FIXME use AVCodecContext level/profile, when encoder will set values */
put_byte(pb, 0xa); /* level */
put_byte(pb, 0); /* profile */
return 0xf;
}
/* TODO: No idea about these values */
static int mov_write_svq3_tag(ByteIOContext *pb)
{
put_be32(pb, 0x15);
put_tag(pb, "SMI ");
put_tag(pb, "SEQH");
put_be32(pb, 0x5);
put_be32(pb, 0xe2c0211d);
put_be32(pb, 0xc0000000);
put_byte(pb, 0);
return 0x15;
}
static int mov_write_avcc_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0);
put_tag(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(ByteIOContext *pb, MOVTrack *track)
{
int i;
put_be32(pb, 24); /* size */
put_tag(pb, "ACLR");
put_tag(pb, "ACLR");
put_tag(pb, "0001");
put_be32(pb, 1); /* yuv 1 / rgb 2 ? */
put_be32(pb, 0); /* unknown */
put_be32(pb, 24); /* size */
put_tag(pb, "APRG");
put_tag(pb, "APRG");
put_tag(pb, "0001");
put_be32(pb, 1); /* unknown */
put_be32(pb, 0); /* unknown */
put_be32(pb, 120); /* size */
put_tag(pb, "ARES");
put_tag(pb, "ARES");
put_tag(pb, "0001");
put_be32(pb, AV_RB32(track->vosData + 0x28)); /* dnxhd cid, some id ? */
put_be32(pb, track->enc->width);
/* values below are based on samples created with quicktime and avid codecs */
if (track->vosData[5] & 2) { // interlaced
put_be32(pb, track->enc->height/2);
put_be32(pb, 2); /* unknown */
put_be32(pb, 0); /* unknown */
put_be32(pb, 4); /* unknown */
} else {
put_be32(pb, track->enc->height);
put_be32(pb, 1); /* unknown */
put_be32(pb, 0); /* unknown */
if (track->enc->height == 1080)
put_be32(pb, 5); /* unknown */
else
put_be32(pb, 6); /* unknown */
}
/* padding */
for (i = 0; i < 10; i++)
put_be64(pb, 0);
/* extra padding for stsd needed */
put_be32(pb, 0);
return 0;
}
static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!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 == CODEC_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
else if (track->enc->codec_type == CODEC_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 == CODEC_TYPE_SUBTITLE &&
(tag == MKTAG('t','x','3','g') ||
tag == MKTAG('t','e','x','t'))))
tag = codec_get_tag(codec_ipod_tags, track->enc->codec_id);
if (!match_ext(s->filename, "m4a") && !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->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');
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_BGR555, MKTAG('r','a','w',' '), 16 },
{ PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
{ PIX_FMT_BGR32_1, MKTAG('r','a','w',' '), 32 },
};
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 &&
(tag == MKTAG('d','v','c','p') ||
track->enc->codec_id == CODEC_ID_RAWVIDEO ||
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 == CODEC_TYPE_VIDEO) {
tag = codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
if (!tag) { // if no mac fcc found, try with Microsoft tags
tag = codec_get_tag(codec_bmp_tags, track->enc->codec_id);
if (tag)
av_log(s, AV_LOG_INFO, "Warning, using MS style video codec tag, "
"the file may be unplayable!\n");
}
} else if (track->enc->codec_type == CODEC_TYPE_AUDIO) {
tag = codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
if (!tag) { // if no mac fcc found, try with Microsoft tags
int ms_tag = codec_get_tag(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_INFO, "Warning, using MS style audio codec tag, "
"the file may be unplayable!\n");
}
}
} else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE)
tag = 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 = 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(ByteIOContext *pb)
{
put_be32(pb, 28);
put_tag(pb, "uuid");
put_be32(pb, 0x6b6840f2);
put_be32(pb, 0x5f244fc5);
put_be32(pb, 0xba39a51b);
put_be32(pb, 0xcf0323f3);
put_be32(pb, 0x0);
return 28;
}
static int mov_write_subtitle_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_le32(pb, track->tag); // store it byteswapped
put_be32(pb, 0); /* Reserved */
put_be16(pb, 0); /* Reserved */
put_be16(pb, 1); /* Data-reference index */
if (track->enc->extradata_size)
put_buffer(pb, track->enc->extradata, track->enc->extradata_size);
return updateSize(pb, pos);
}
static int mov_write_video_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
char compressor_name[32];
put_be32(pb, 0); /* size */
put_le32(pb, track->tag); // store it byteswapped
put_be32(pb, 0); /* Reserved */
put_be16(pb, 0); /* Reserved */
put_be16(pb, 1); /* Data-reference index */
put_be16(pb, 0); /* Codec stream version */
put_be16(pb, 0); /* Codec stream revision (=0) */
if (track->mode == MODE_MOV) {
put_tag(pb, "FFMP"); /* Vendor */
if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
put_be32(pb, 0); /* Temporal Quality */
put_be32(pb, 0x400); /* Spatial Quality = lossless*/
} else {
put_be32(pb, 0x200); /* Temporal Quality = normal */
put_be32(pb, 0x200); /* Spatial Quality = normal */
}
} else {
put_be32(pb, 0); /* Reserved */
put_be32(pb, 0); /* Reserved */
put_be32(pb, 0); /* Reserved */
}
put_be16(pb, track->enc->width); /* Video width */
put_be16(pb, track->height); /* Video height */
put_be32(pb, 0x00480000); /* Horizontal resolution 72dpi */
put_be32(pb, 0x00480000); /* Vertical resolution 72dpi */
put_be32(pb, 0); /* Data size (= 0) */
put_be16(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)
strncpy(compressor_name,track->enc->codec->name,31);
put_byte(pb, strlen(compressor_name));
put_buffer(pb, compressor_name, 31);
if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
put_be16(pb, track->enc->bits_per_coded_sample);
else
put_be16(pb, 0x18); /* Reserved */
put_be16(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);
return updateSize(pb, pos);
}
static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "stsd");
put_be32(pb, 0); /* version & flags */
put_be32(pb, 1); /* entry count */
if (track->enc->codec_type == CODEC_TYPE_VIDEO)
mov_write_video_tag(pb, track);
else if (track->enc->codec_type == CODEC_TYPE_AUDIO)
mov_write_audio_tag(pb, track);
else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE)
mov_write_subtitle_tag(pb, track);
return updateSize(pb, pos);
}
static int mov_write_ctts_tag(ByteIOContext *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);
put_be32(pb, atom_size); /* size */
put_tag(pb, "ctts");
put_be32(pb, 0); /* version & flags */
put_be32(pb, entries); /* entry count */
for (i=0; i<entries; i++) {
put_be32(pb, ctts_entries[i].count);
put_be32(pb, ctts_entries[i].duration);
}
av_free(ctts_entries);
return atom_size;
}
/* Time to sample atom */
static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack *track)
{
MOVStts *stts_entries;
uint32_t entries = -1;
uint32_t atom_size;
int i;
if (track->enc->codec_type == CODEC_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);
put_be32(pb, atom_size); /* size */
put_tag(pb, "stts");
put_be32(pb, 0); /* version & flags */
put_be32(pb, entries); /* entry count */
for (i=0; i<entries; i++) {
put_be32(pb, stts_entries[i].count);
put_be32(pb, stts_entries[i].duration);
}
av_free(stts_entries);
return atom_size;
}
static int mov_write_dref_tag(ByteIOContext *pb)
{
put_be32(pb, 28); /* size */
put_tag(pb, "dref");
put_be32(pb, 0); /* version & flags */
put_be32(pb, 1); /* entry count */
put_be32(pb, 0xc); /* size */
put_tag(pb, "url ");
put_be32(pb, 1); /* version & flags */
return 28;
}
static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "stbl");
mov_write_stsd_tag(pb, track);
mov_write_stts_tag(pb, track);
if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
track->hasKeyframes && track->hasKeyframes < track->entry)
mov_write_stss_tag(pb, track);
if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
track->hasBframes)
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(ByteIOContext *pb)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "dinf");
mov_write_dref_tag(pb);
return updateSize(pb, pos);
}
static int mov_write_nmhd_tag(ByteIOContext *pb)
{
put_be32(pb, 12);
put_tag(pb, "nmhd");
put_be32(pb, 0);
return 12;
}
static int mov_write_gmhd_tag(ByteIOContext *pb)
{
put_be32(pb, 0x20); /* size */
put_tag(pb, "gmhd");
put_be32(pb, 0x18); /* gmin size */
put_tag(pb, "gmin"); /* generic media info */
put_be32(pb, 0); /* version & flags */
put_be16(pb, 0x40); /* graphics mode = */
put_be16(pb, 0x8000); /* opColor (r?) */
put_be16(pb, 0x8000); /* opColor (g?) */
put_be16(pb, 0x8000); /* opColor (b?) */
put_be16(pb, 0); /* balance */
put_be16(pb, 0); /* reserved */
return 0x20;
}
static int mov_write_smhd_tag(ByteIOContext *pb)
{
put_be32(pb, 16); /* size */
put_tag(pb, "smhd");
put_be32(pb, 0); /* version & flags */
put_be16(pb, 0); /* reserved (balance, normally = 0) */
put_be16(pb, 0); /* reserved */
return 16;
}
static int mov_write_vmhd_tag(ByteIOContext *pb)
{
put_be32(pb, 0x14); /* size (always 0x14) */
put_tag(pb, "vmhd");
put_be32(pb, 0x01); /* version & flags */
put_be64(pb, 0); /* reserved (graphics mode = copy) */
return 0x14;
}
static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack *track)
{
const char *hdlr, *descr = NULL, *hdlr_type = NULL;
int64_t pos = url_ftell(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 == CODEC_TYPE_VIDEO) {
hdlr_type = "vide";
descr = "VideoHandler";
} else if (track->enc->codec_type == CODEC_TYPE_AUDIO) {
hdlr_type = "soun";
descr = "SoundHandler";
} else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE) {
if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
else hdlr_type = "text";
descr = "SubtitleHandler";
}
}
put_be32(pb, 0); /* size */
put_tag(pb, "hdlr");
put_be32(pb, 0); /* Version & flags */
put_buffer(pb, hdlr, 4); /* handler */
put_tag(pb, hdlr_type); /* handler type */
put_be32(pb ,0); /* reserved */
put_be32(pb ,0); /* reserved */
put_be32(pb ,0); /* reserved */
put_byte(pb, strlen(descr)); /* string counter */
put_buffer(pb, descr, strlen(descr)); /* handler description */
return updateSize(pb, pos);
}
static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "minf");
if(track->enc->codec_type == CODEC_TYPE_VIDEO)
mov_write_vmhd_tag(pb);
else if (track->enc->codec_type == CODEC_TYPE_AUDIO)
mov_write_smhd_tag(pb);
else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE) {
if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);
else mov_write_nmhd_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(ByteIOContext *pb, MOVTrack *track)
{
int version = track->trackDuration < INT32_MAX ? 0 : 1;
(version == 1) ? put_be32(pb, 44) : put_be32(pb, 32); /* size */
put_tag(pb, "mdhd");
put_byte(pb, version);
put_be24(pb, 0); /* flags */
if (version == 1) {
put_be64(pb, track->time);
put_be64(pb, track->time);
} else {
put_be32(pb, track->time); /* creation time */
put_be32(pb, track->time); /* modification time */
}
put_be32(pb, track->timescale); /* time scale (sample rate for audio) */
(version == 1) ? put_be64(pb, track->trackDuration) : put_be32(pb, track->trackDuration); /* duration */
put_be16(pb, track->language); /* language */
put_be16(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(ByteIOContext *pb, MOVTrack *track)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(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(ByteIOContext *pb, MOVTrack *track, AVStream *st)
{
int64_t duration = av_rescale_rnd(track->trackDuration, globalTimescale, track->timescale, AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
(version == 1) ? put_be32(pb, 104) : put_be32(pb, 92); /* size */
put_tag(pb, "tkhd");
put_byte(pb, version);
put_be24(pb, 0xf); /* flags (track enabled) */
if (version == 1) {
put_be64(pb, track->time);
put_be64(pb, track->time);
} else {
put_be32(pb, track->time); /* creation time */
put_be32(pb, track->time); /* modification time */
}
put_be32(pb, track->trackID); /* track-id */
put_be32(pb, 0); /* reserved */
(version == 1) ? put_be64(pb, duration) : put_be32(pb, duration);
put_be32(pb, 0); /* reserved */
put_be32(pb, 0); /* reserved */
put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */
/* Volume, only for audio */
if(track->enc->codec_type == CODEC_TYPE_AUDIO)
put_be16(pb, 0x0100);
else
put_be16(pb, 0);
put_be16(pb, 0); /* reserved */
/* Matrix structure */
put_be32(pb, 0x00010000); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x00010000); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x40000000); /* reserved */
/* Track width and height, for visual only */
if(track->enc->codec_type == CODEC_TYPE_VIDEO ||
track->enc->codec_type == CODEC_TYPE_SUBTITLE) {
double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
if(!sample_aspect_ratio || track->height != track->enc->height)
sample_aspect_ratio = 1;
put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);
put_be32(pb, track->height*0x10000);
}
else {
put_be32(pb, 0);
put_be32(pb, 0);
}
return 0x5c;
}
// This box seems important for the psp playback ... without it the movie seems to hang
static int mov_write_edts_tag(ByteIOContext *pb, MOVTrack *track)
{
put_be32(pb, 0x24); /* size */
put_tag(pb, "edts");
put_be32(pb, 0x1c); /* size */
put_tag(pb, "elst");
put_be32(pb, 0x0);
put_be32(pb, 0x1);
put_be32(pb, av_rescale_rnd(track->trackDuration, globalTimescale, track->timescale, AV_ROUND_UP)); /* duration ... doesn't seem to effect psp */
put_be32(pb, track->cluster[0].cts); /* first pts is cts since dts is 0 */
put_be32(pb, 0x00010000);
return 0x24;
}
// goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
static int mov_write_uuid_tag_psp(ByteIOContext *pb, MOVTrack *mov)
{
put_be32(pb, 0x34); /* size ... reports as 28 in mp4box! */
put_tag(pb, "uuid");
put_tag(pb, "USMT");
put_be32(pb, 0x21d24fce);
put_be32(pb, 0xbb88695c);
put_be32(pb, 0xfac9c740);
put_be32(pb, 0x1c); // another size here!
put_tag(pb, "MTDT");
put_be32(pb, 0x00010012);
put_be32(pb, 0x0a);
put_be32(pb, 0x55c40000);
put_be32(pb, 0x1);
put_be32(pb, 0x0);
return 0x34;
}
static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "trak");
mov_write_tkhd_tag(pb, track, st);
if (track->mode == MODE_PSP || track->hasBframes)
mov_write_edts_tag(pb, track); // PSP Movies require edts box
mov_write_mdia_tag(pb, track);
if (track->mode == MODE_PSP)
mov_write_uuid_tag_psp(pb,track); // PSP Movies require this uuid box
return updateSize(pb, pos);
}
#if 0
/* TODO: Not sorted out, but not necessary either */
static int mov_write_iods_tag(ByteIOContext *pb, MOVMuxContext *mov)
{
put_be32(pb, 0x15); /* size */
put_tag(pb, "iods");
put_be32(pb, 0); /* version & flags */
put_be16(pb, 0x1007);
put_byte(pb, 0);
put_be16(pb, 0x4fff);
put_be16(pb, 0xfffe);
put_be16(pb, 0x01ff);
return 0x15;
}
#endif
static int mov_write_mvhd_tag(ByteIOContext *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, globalTimescale, 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) ? put_be32(pb, 120) : put_be32(pb, 108); /* size */
put_tag(pb, "mvhd");
put_byte(pb, version);
put_be24(pb, 0); /* flags */
if (version == 1) {
put_be64(pb, mov->time);
put_be64(pb, mov->time);
} else {
put_be32(pb, mov->time); /* creation time */
put_be32(pb, mov->time); /* modification time */
}
put_be32(pb, mov->timescale); /* timescale */
(version == 1) ? put_be64(pb, maxTrackLen) : put_be32(pb, maxTrackLen); /* duration of longest track */
put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
put_be16(pb, 0); /* reserved */
put_be32(pb, 0); /* reserved */
put_be32(pb, 0); /* reserved */
/* Matrix structure */
put_be32(pb, 0x00010000); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x00010000); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x0); /* reserved */
put_be32(pb, 0x40000000); /* reserved */
put_be32(pb, 0); /* reserved (preview time) */
put_be32(pb, 0); /* reserved (preview duration) */
put_be32(pb, 0); /* reserved (poster time) */
put_be32(pb, 0); /* reserved (selection time) */
put_be32(pb, 0); /* reserved (selection duration) */
put_be32(pb, 0); /* reserved (current time) */
put_be32(pb, maxTrackID+1); /* Next track id */
return 0x6c;
}
static int mov_write_itunes_hdlr_tag(ByteIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "hdlr");
put_be32(pb, 0);
put_be32(pb, 0);
put_tag(pb, "mdir");
put_tag(pb, "appl");
put_be32(pb, 0);
put_be32(pb, 0);
put_be16(pb, 0);
return updateSize(pb, pos);
}
/* helper function to write a data tag with the specified string as data */
static int mov_write_string_data_tag(ByteIOContext *pb, const char *data, int lang, int long_style)
{
if(long_style){
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "data");
put_be32(pb, 1);
put_be32(pb, 0);
put_buffer(pb, data, strlen(data));
return updateSize(pb, pos);
}else{
put_be16(pb, strlen(data)); /* string length */
put_be16(pb, lang);
put_buffer(pb, data, strlen(data));
return strlen(data) + 4;
}
}
static int mov_write_string_tag(ByteIOContext *pb, const char *name, const char *value, int lang, int long_style){
int size = 0;
if (value && value[0]) {
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(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, ByteIOContext *pb,
const char *name, const char *tag,
int long_style)
{
int l, lang = 0, len, len2;
AVMetadataTag *t, *t2 = NULL;
char tag2[16];
if (!(t = av_metadata_get(s->metadata, tag, NULL, 0)))
return 0;
len = strlen(t->key);
snprintf(tag2, sizeof(tag2), "%s-", tag);
while ((t2 = av_metadata_get(s->metadata, tag2, t2, AV_METADATA_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], 0)) >= 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(ByteIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
AVMetadataTag *t = av_metadata_get(s->metadata, "track", NULL, 0);
int size = 0, track = t ? atoi(t->value) : 0;
if (track) {
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "trkn");
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "data");
put_be32(pb, 0); // 8 bytes empty
put_be32(pb, 0);
put_be16(pb, 0); // empty
put_be16(pb, track); // track number
put_be16(pb, 0); // total track number
put_be16(pb, 0); // empty
updateSize(pb, pos);
}
size = updateSize(pb, pos);
}
return size;
}
/* iTunes meta data list */
static int mov_write_ilst_tag(ByteIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "ilst");
mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
mov_write_string_metadata(s, pb, "\251ART", "author" , 1);
mov_write_string_metadata(s, pb, "\251wrt", "author" , 1);
mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
mov_write_string_metadata(s, pb, "\251day", "year" , 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_trkn_tag(pb, mov, s);
return updateSize(pb, pos);
}
/* iTunes meta data tag */
static int mov_write_meta_tag(ByteIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int size = 0;
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "meta");
put_be32(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(ByteIOContext *pb, const uint8_t *b)
{
int val;
while(*b){
GET_UTF8(val, *b++, return -1;)
put_be16(pb, val);
}
put_be16(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(ByteIOContext *pb, AVFormatContext *s,
const char *tag, const char *str)
{
int64_t pos = url_ftell(pb);
AVMetadataTag *t = av_metadata_get(s->metadata, str, NULL, 0);
if (!t || !utf8len(t->value))
return 0;
put_be32(pb, 0); /* size */
put_tag (pb, tag); /* type */
put_be32(pb, 0); /* version + flags */
if (!strcmp(tag, "yrrc"))
put_be16(pb, atoi(t->value));
else {
put_be16(pb, language_code("eng")); /* language */
ascii_to_wc(pb, t->value);
if (!strcmp(tag, "albm") &&
(t = av_metadata_get(s->metadata, "year", NULL, 0)))
put_byte(pb, atoi(t->value));
}
return updateSize(pb, pos);
}
static int mov_write_udta_tag(ByteIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
ByteIOContext *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 = url_open_dyn_buf(&pb_buf);
if(ret < 0)
return ret;
if (mov->mode & MODE_3GP) {
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", "year");
} 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, "\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", "year" , 0);
mov_write_string_tag(pb_buf, "\251enc", LIBAVFORMAT_IDENT, 0, 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 ((size = url_close_dyn_buf(pb_buf, &buf)) > 0) {
put_be32(pb, size+8);
put_tag(pb, "udta");
put_buffer(pb, buf, size);
av_free(buf);
}
return 0;
}
static void mov_write_psp_udta_tag(ByteIOContext *pb,
const char *str, const char *lang, int type)
{
int len = utf8len(str)+1;
if(len<=0)
return;
put_be16(pb, len*2+10); /* size */
put_be32(pb, type); /* type */
put_be16(pb, language_code(lang)); /* language */
put_be16(pb, 0x01); /* ? */
ascii_to_wc(pb, str);
}
static int mov_write_uuidusmt_tag(ByteIOContext *pb, AVFormatContext *s)
{
AVMetadataTag *title = av_metadata_get(s->metadata, "title", NULL, 0);
int64_t pos, pos2;
if (title) {
pos = url_ftell(pb);
put_be32(pb, 0); /* size placeholder*/
put_tag(pb, "uuid");
put_tag(pb, "USMT");
put_be32(pb, 0x21d24fce); /* 96 bit UUID */
put_be32(pb, 0xbb88695c);
put_be32(pb, 0xfac9c740);
pos2 = url_ftell(pb);
put_be32(pb, 0); /* size placeholder*/
put_tag(pb, "MTDT");
put_be16(pb, 4);
// ?
put_be16(pb, 0x0C); /* size */
put_be32(pb, 0x0B); /* type */
put_be16(pb, language_code("und")); /* language */
put_be16(pb, 0x0); /* ? */
put_be16(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 int mov_write_moov_tag(ByteIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int i;
int64_t pos = url_ftell(pb);
put_be32(pb, 0); /* size placeholder*/
put_tag(pb, "moov");
mov->timescale = globalTimescale;
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;
}
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]), s->streams[i]);
}
}
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(ByteIOContext *pb, MOVMuxContext *mov)
{
put_be32(pb, 8); // placeholder for extended size field (64 bit)
put_tag(pb, mov->mode == MODE_MOV ? "wide" : "free");
mov->mdat_pos = url_ftell(pb);
put_be32(pb, 0); /* size placeholder*/
put_tag(pb, "mdat");
return 0;
}
/* TODO: This needs to be more general */
static int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int64_t pos = url_ftell(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 == CODEC_TYPE_VIDEO)
has_video = 1;
if (st->codec->codec_id == CODEC_ID_H264)
has_h264 = 1;
}
put_be32(pb, 0); /* size */
put_tag(pb, "ftyp");
if (mov->mode == MODE_3GP) {
put_tag(pb, has_h264 ? "3gp6" : "3gp4");
minor = has_h264 ? 0x100 : 0x200;
} else if (mov->mode & MODE_3G2) {
put_tag(pb, has_h264 ? "3g2b" : "3g2a");
minor = has_h264 ? 0x20000 : 0x10000;
}else if (mov->mode == MODE_PSP)
put_tag(pb, "MSNV");
else if (mov->mode == MODE_MP4)
put_tag(pb, "isom");
else if (mov->mode == MODE_IPOD)
put_tag(pb, has_video ? "M4V ":"M4A ");
else
put_tag(pb, "qt ");
put_be32(pb, minor);
if(mov->mode == MODE_MOV)
put_tag(pb, "qt ");
else{
put_tag(pb, "isom");
put_tag(pb, "iso2");
if(has_h264)
put_tag(pb, "avc1");
}
if (mov->mode == MODE_3GP)
put_tag(pb, has_h264 ? "3gp6":"3gp4");
else if (mov->mode & MODE_3G2)
put_tag(pb, has_h264 ? "3g2b":"3g2a");
else if (mov->mode == MODE_PSP)
put_tag(pb, "MSNV");
else if (mov->mode == MODE_MP4)
put_tag(pb, "mp41");
return updateSize(pb, pos);
}
static void mov_write_uuidprof_tag(ByteIOContext *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);
put_be32(pb, 0x94); /* size */
put_tag(pb, "uuid");
put_tag(pb, "PROF");
put_be32(pb, 0x21d24fce); /* 96 bit UUID */
put_be32(pb, 0xbb88695c);
put_be32(pb, 0xfac9c740);
put_be32(pb, 0x0); /* ? */
put_be32(pb, 0x3); /* 3 sections ? */
put_be32(pb, 0x14); /* size */
put_tag(pb, "FPRF");
put_be32(pb, 0x0); /* ? */
put_be32(pb, 0x0); /* ? */
put_be32(pb, 0x0); /* ? */
put_be32(pb, 0x2c); /* size */
put_tag(pb, "APRF"); /* audio */
put_be32(pb, 0x0);
put_be32(pb, 0x2); /* TrackID */
put_tag(pb, "mp4a");
put_be32(pb, 0x20f);
put_be32(pb, 0x0);
put_be32(pb, audio_kbitrate);
put_be32(pb, audio_kbitrate);
put_be32(pb, AudioRate);
put_be32(pb, AudioCodec->channels);
put_be32(pb, 0x34); /* size */
put_tag(pb, "VPRF"); /* video */
put_be32(pb, 0x0);
put_be32(pb, 0x1); /* TrackID */
if (VideoCodec->codec_id == CODEC_ID_H264) {
put_tag(pb, "avc1");
put_be16(pb, 0x014D);
put_be16(pb, 0x0015);
} else {
put_tag(pb, "mp4v");
put_be16(pb, 0x0000);
put_be16(pb, 0x0103);
}
put_be32(pb, 0x0);
put_be32(pb, video_kbitrate);
put_be32(pb, video_kbitrate);
put_be32(pb, FrameRate);
put_be32(pb, FrameRate);
put_be16(pb, VideoCodec->width);
put_be16(pb, VideoCodec->height);
put_be32(pb, 0x010001); /* ? */
}
static int mov_write_header(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
MOVMuxContext *mov = s->priv_data;
int i;
if (url_is_streamed(s->pb)) {
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->tracks = av_mallocz(s->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];
AVMetadataTag *lang = av_metadata_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(st->codec->codec_type == CODEC_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;
av_set_pts_info(st, 64, 1, 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 == CODEC_TYPE_AUDIO){
track->timescale = st->codec->sample_rate;
av_set_pts_info(st, 64, 1, 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->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 &&
track->enc->codec_id == CODEC_ID_MP3 && track->enc->sample_rate < 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 == CODEC_TYPE_SUBTITLE){
track->timescale = st->codec->time_base.den;
av_set_pts_info(st, 64, 1, st->codec->time_base.den);
}
if (!track->height)
track->height = st->codec->height;
}
mov_write_mdat_tag(pb, mov);
mov->time = s->timestamp + 0x7C25B080; //1970 based -> 1904 based
mov->nb_streams = s->nb_streams;
put_flush_packet(pb);
return 0;
error:
av_freep(&mov->tracks);
return -1;
}
static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVMuxContext *mov = s->priv_data;
ByteIOContext *pb = s->pb;
MOVTrack *trk = &mov->tracks[pkt->stream_index];
AVCodecContext *enc = trk->enc;
unsigned int samplesInChunk = 0;
int size= pkt->size;
if (url_is_streamed(s->pb)) 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, 0};
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 (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 {
put_buffer(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(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));
if (!trk->cluster)
return -1;
}
trk->cluster[trk->entry].pos = url_ftell(pb) - size;
trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
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->hasBframes = 1;
trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
trk->cluster[trk->entry].key_frame = !!(pkt->flags & PKT_FLAG_KEY);
if(trk->cluster[trk->entry].key_frame)
trk->hasKeyframes++;
trk->entry++;
trk->sampleCount += samplesInChunk;
mov->mdat_size += size;
put_flush_packet(pb);
return 0;
}
static int mov_write_trailer(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
ByteIOContext *pb = s->pb;
int res = 0;
int i;
int64_t moov_pos = url_ftell(pb);
/* Write size of mdat tag */
if (mov->mdat_size+8 <= UINT32_MAX) {
url_fseek(pb, mov->mdat_pos, SEEK_SET);
put_be32(pb, mov->mdat_size+8);
} else {
/* overwrite 'wide' placeholder atom */
url_fseek(pb, mov->mdat_pos - 8, SEEK_SET);
put_be32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */
put_tag(pb, "mdat");
put_be64(pb, mov->mdat_size+16);
}
url_fseek(pb, moov_pos, SEEK_SET);
mov_write_moov_tag(pb, mov, s);
for (i=0; i<mov->nb_streams; i++) {
av_freep(&mov->tracks[i].cluster);
if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);
}
put_flush_packet(pb);
av_freep(&mov->tracks);
return res;
}
#if CONFIG_MOV_MUXER
AVOutputFormat mov_muxer = {
"mov",
NULL_IF_CONFIG_SMALL("MOV format"),
NULL,
"mov",
sizeof(MOVMuxContext),
CODEC_ID_AAC,
CODEC_ID_MPEG4,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
.codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},
};
#endif
#if CONFIG_TGP_MUXER
AVOutputFormat tgp_muxer = {
"3gp",
NULL_IF_CONFIG_SMALL("3GP format"),
NULL,
"3gp",
sizeof(MOVMuxContext),
CODEC_ID_AMR_NB,
CODEC_ID_H263,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
};
#endif
#if CONFIG_MP4_MUXER
AVOutputFormat mp4_muxer = {
"mp4",
NULL_IF_CONFIG_SMALL("MP4 format"),
"application/mp4",
"mp4",
sizeof(MOVMuxContext),
CODEC_ID_AAC,
CODEC_ID_MPEG4,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
.codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
};
#endif
#if CONFIG_PSP_MUXER
AVOutputFormat psp_muxer = {
"psp",
NULL_IF_CONFIG_SMALL("PSP MP4 format"),
NULL,
"mp4,psp",
sizeof(MOVMuxContext),
CODEC_ID_AAC,
CODEC_ID_MPEG4,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
};
#endif
#if CONFIG_TG2_MUXER
AVOutputFormat tg2_muxer = {
"3g2",
NULL_IF_CONFIG_SMALL("3GP2 format"),
NULL,
"3g2",
sizeof(MOVMuxContext),
CODEC_ID_AMR_NB,
CODEC_ID_H263,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
};
#endif
#if CONFIG_IPOD_MUXER
AVOutputFormat ipod_muxer = {
"ipod",
NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),
"application/mp4",
"m4v,m4a",
sizeof(MOVMuxContext),
CODEC_ID_AAC,
CODEC_ID_H264,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
.codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},
};
#endif
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