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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>.
*
* 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"
#undef NDEBUG
#include <assert.h>
#define MOV_INDEX_CLUSTER_SIZE 16384
#define globalTimescale 1000
#define MODE_MP4 0
#define MODE_MOV 1
#define MODE_3GP 2
#define MODE_PSP 3 // 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 4
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;
AVCodecContext *enc;
int vosLen;
uint8_t *vosData;
MOVIentry *cluster;
int audio_vbr;
} MOVTrack;
typedef struct MOVContext {
int mode;
int64_t time;
int nb_streams;
offset_t mdat_pos;
uint64_t mdat_size;
long timescale;
MOVTrack tracks[MAX_STREAMS];
} MOVContext;
//FIXME support 64 bit variant with wide placeholders
static offset_t updateSize (ByteIOContext *pb, offset_t pos)
{
offset_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
offset_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;
offset_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;
offset_t entryPos, curpos;
offset_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)
{
offset_t curpos, entryPos;
int i, index = 0;
offset_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_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
{
offset_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
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)
{
offset_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);
}
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)
{
offset_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_AMR_NB ||
track->enc->codec_id == CODEC_ID_PCM_S24LE ||
track->enc->codec_id == CODEC_ID_PCM_S32LE))
mov_write_wave_tag(pb, track);
else if(track->enc->codec_id == CODEC_ID_AAC)
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->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 uint8_t *avc_find_startcode( uint8_t *p, uint8_t *end )
{
uint8_t *a = p + 4 - ((long)p & 3);
for( end -= 3; p < a && p < end; p++ ) {
if( p[0] == 0 && p[1] == 0 && p[2] == 1 )
return p;
}
for( end -= 3; p < end; p += 4 ) {
uint32_t x = *(uint32_t*)p;
// if( (x - 0x01000100) & (~x) & 0x80008000 ) // little endian
// if( (x - 0x00010001) & (~x) & 0x00800080 ) // big endian
if( (x - 0x01010101) & (~x) & 0x80808080 ) { // generic
if( p[1] == 0 ) {
if( p[0] == 0 && p[2] == 1 )
return p-1;
if( p[2] == 0 && p[3] == 1 )
return p;
}
if( p[3] == 0 ) {
if( p[2] == 0 && p[4] == 1 )
return p+1;
if( p[4] == 0 && p[5] == 1 )
return p+2;
}
}
}
for( end += 3; p < end; p++ ) {
if( p[0] == 0 && p[1] == 0 && p[2] == 1 )
return p;
}
return end + 3;
}
static int avc_parse_nal_units(uint8_t **buf, int *size)
{
ByteIOContext *pb;
uint8_t *p = *buf;
uint8_t *end = p + *size;
uint8_t *nal_start, *nal_end;
int ret = url_open_dyn_buf(&pb);
if(ret < 0)
return ret;
nal_start = avc_find_startcode(p, end);
while (nal_start < end) {
while(!*(nal_start++));
nal_end = avc_find_startcode(nal_start, end);
put_be32(pb, nal_end - nal_start);
put_buffer(pb, nal_start, nal_end - nal_start);
nal_start = nal_end;
}
av_freep(buf);
*size = url_close_dyn_buf(pb, buf);
return 0;
}
static int mov_write_avcc_tag(ByteIOContext *pb, MOVTrack *track)
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0);
put_tag(pb, "avcC");
if (track->vosLen > 6) {
/* check for h264 start code */
if (AV_RB32(track->vosData) == 0x00000001) {
uint8_t *buf, *end;
uint32_t sps_size=0, pps_size=0;
uint8_t *sps=0, *pps=0;
avc_parse_nal_units(&track->vosData, &track->vosLen);
buf = track->vosData;
end = track->vosData + track->vosLen;
/* look for sps and pps */
while (buf < end) {
unsigned int size;
uint8_t nal_type;
size = AV_RB32(buf);
nal_type = buf[4] & 0x1f;
if (nal_type == 7) { /* SPS */
sps = buf + 4;
sps_size = size;
} else if (nal_type == 8) { /* PPS */
pps = buf + 4;
pps_size = size;
}
buf += size + 4;
}
assert(sps);
assert(pps);
put_byte(pb, 1); /* version */
put_byte(pb, sps[1]); /* profile */
put_byte(pb, sps[2]); /* profile compat */
put_byte(pb, sps[3]); /* level */
put_byte(pb, 0xff); /* 6 bits reserved (111111) + 2 bits nal size length - 1 (11) */
put_byte(pb, 0xe1); /* 3 bits reserved (111) + 5 bits number of sps (00001) */
put_be16(pb, sps_size);
put_buffer(pb, sps, sps_size);
put_byte(pb, 1); /* number of pps */
put_be16(pb, pps_size);
put_buffer(pb, pps, pps_size);
} else {
put_buffer(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 mov_find_video_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!tag) {
if (track->enc->codec_id == CODEC_ID_DVVIDEO) {
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 { /* assume PAL */
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->codec_id == CODEC_ID_H263) {
if (track->mode == MODE_MOV)
tag = MKTAG('h', '2', '6', '3');
else
tag = MKTAG('s', '2', '6', '3');
} else {
tag = codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
}
}
// if no mac fcc found, try with Microsoft tags
if (!tag) {
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");
}
}
assert(tag);
return tag;
}
static int mov_find_audio_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!tag) {
tag = codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
}
// if no mac fcc found, try with Microsoft tags
if (!tag) {
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");
}
}
assert(tag);
return tag;
}
static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
{
offset_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->enc->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);
put_be16(pb, 0x18); /* Reserved */
put_be16(pb, 0xffff); /* Reserved */
if(track->enc->codec_id == CODEC_ID_MPEG4)
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_H264)
mov_write_avcc_tag(pb, track);
else if(track->enc->codec_id == CODEC_ID_DNXHD)
mov_write_avid_tag(pb, track);
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)
{
offset_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);
return updateSize(pb, pos);
}
static int mov_write_ctts_tag(ByteIOContext *pb, MOVTrack* track)
{
MOV_stts_t *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)
{
MOV_stts_t *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)
{
offset_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->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)
{
offset_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_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 *descr, *hdlr, *hdlr_type;
offset_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 {
hdlr_type = "soun";
descr = "SoundHandler";
}
}
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)
{
offset_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
mov_write_smhd_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)
{
offset_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)
{
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) {
double sample_aspect_ratio = av_q2d(track->enc->sample_aspect_ratio);
if( !sample_aspect_ratio ) sample_aspect_ratio = 1;
put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);
put_be32(pb, track->enc->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)
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "trak");
mov_write_tkhd_tag(pb, track);
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, MOVContext *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, MOVContext *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, MOVContext* mov,
AVFormatContext *s)
{
offset_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 long_style)
{
if(long_style){
offset_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, 0);
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 long_style){
int size = 0;
if ( value && value[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, name);
mov_write_string_data_tag(pb, value, long_style);
size= updateSize(pb, pos);
}
return size;
}
/* iTunes year */
static int mov_write_day_tag(ByteIOContext *pb, int year, int long_style)
{
if(year){
char year_str[5];
snprintf(year_str, sizeof(year_str), "%04d", year);
return mov_write_string_tag(pb, "\251day", year_str, long_style);
}else
return 0;
}
/* iTunes track number */
static int mov_write_trkn_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->track ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "trkn");
{
offset_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, s->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, MOVContext* mov,
AVFormatContext *s)
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "ilst");
mov_write_string_tag(pb, "\251nam", s->title , 1);
mov_write_string_tag(pb, "\251ART", s->author , 1);
mov_write_string_tag(pb, "\251wrt", s->author , 1);
mov_write_string_tag(pb, "\251alb", s->album , 1);
mov_write_day_tag(pb, s->year ,1);
if(mov->tracks[0].enc && !(mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT))
mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 1);
mov_write_string_tag(pb, "\251cmt", s->comment , 1);
mov_write_string_tag(pb, "\251gen", s->genre , 1);
mov_write_trkn_tag(pb, mov, s);
return updateSize(pb, pos);
}
/* iTunes meta data tag */
static int mov_write_meta_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
// only save meta tag if required
if ( s->title[0] || s->author[0] || s->album[0] || s->year ||
s->comment[0] || s->genre[0] || s->track ) {
offset_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 mov_write_udta_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int i, req = 0;
/* Requirements */
for (i=0; i<mov->nb_streams; i++) {
if(mov->tracks[i].entry <= 0) continue;
if (mov->tracks[i].enc->codec_id == CODEC_ID_AAC ||
mov->tracks[i].enc->codec_id == CODEC_ID_MPEG4) {
req = 1;
break;
}
}
if (s->title[0] || s->author[0] || s->album[0] || s->year ||
s->comment[0] || s->genre[0] || s->track ||
(mov->mode == MODE_MOV &&
((mov->tracks[0].enc && !mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT) || req))) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "udta");
/* iTunes meta data */
mov_write_meta_tag(pb, mov, s);
if(mov->mode == MODE_MOV){ // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
/* Requirements */
if (req)
mov_write_string_tag(pb, "\251req", "QuickTime 6.0 or greater", 0);
mov_write_string_tag(pb, "\251nam", s->title , 0);
mov_write_string_tag(pb, "\251aut", s->author , 0);
mov_write_string_tag(pb, "\251alb", s->album , 0);
mov_write_day_tag(pb, s->year, 0);
if(mov->tracks[0].enc && !(mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT))
mov_write_string_tag(pb, "\251enc", LIBAVFORMAT_IDENT, 0);
mov_write_string_tag(pb, "\251des", s->comment , 0);
mov_write_string_tag(pb, "\251gen", s->genre , 0);
}
return updateSize(pb, pos);
}
return 0;
}
static int utf8len(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, 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_uuidusmt_tag (ByteIOContext *pb, AVFormatContext *s)
{
size_t len, size;
offset_t pos, curpos;
size = 0;
if (s->title[0]) {
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 );
size += 24;
put_be32(pb, 0); /* size placeholder*/
put_tag(pb, "MTDT");
put_be16(pb, 4);
size += 10;
// ?
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 */
size += 12;
// Encoder
len = utf8len(LIBAVCODEC_IDENT)+1;
if(len<=0)
goto not_utf8;
put_be16(pb, len*2+10); /* size */
put_be32(pb, 0x04); /* type */
put_be16(pb, language_code("eng")); /* language */
put_be16(pb, 0x01); /* ? */
ascii_to_wc(pb, LIBAVCODEC_IDENT);
size += len*2+10;
// Title
len = utf8len(s->title)+1;
if(len<=0)
goto not_utf8;
put_be16(pb, len*2+10); /* size */
put_be32(pb, 0x01); /* type */
put_be16(pb, language_code("eng")); /* language */
put_be16(pb, 0x01); /* ? */
ascii_to_wc (pb, s->title);
size += len*2+10;
// Date
// 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);
len = utf8len("2006/04/01 11:11:11")+1;
if(len<=0)
goto not_utf8;
put_be16(pb, len*2+10); /* size */
put_be32(pb, 0x03); /* type */
put_be16(pb, language_code("und")); /* language */
put_be16(pb, 0x01); /* ? */
ascii_to_wc (pb, "2006/04/01 11:11:11");
size += len*2+10;
// size
curpos = url_ftell(pb);
url_fseek(pb, pos, SEEK_SET);
put_be32(pb, size);
url_fseek(pb, pos+24, SEEK_SET);
put_be32(pb, size-24);
url_fseek(pb, curpos, SEEK_SET);
}
return size;
not_utf8:
av_log(s, AV_LOG_ERROR, "not utf8\n");
return -1;
}
static int mov_write_moov_tag(ByteIOContext *pb, MOVContext *mov,
AVFormatContext *s)
{
int i;
offset_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]));
}
}
if (mov->mode == MODE_PSP)
mov_write_uuidusmt_tag(pb, s);
else if (mov->mode != MODE_3GP && mov->mode != MODE_3G2)
mov_write_udta_tag(pb, mov, s);
return updateSize(pb, pos);
}
static int mov_write_mdat_tag(ByteIOContext *pb, MOVContext* 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 void mov_write_ftyp_tag (ByteIOContext *pb, AVFormatContext *s)
{
MOVContext *mov = s->priv_data;
put_be32(pb, 0x14 ); /* size */
put_tag(pb, "ftyp");
if ( mov->mode == MODE_3GP )
put_tag(pb, "3gp4");
else if ( mov->mode == MODE_3G2 )
put_tag(pb, "3g2a");
else if ( mov->mode == MODE_PSP )
put_tag(pb, "MSNV");
else if ( mov->mode == MODE_MP4 )
put_tag(pb, "isom");
else
put_tag(pb, "qt ");
put_be32(pb, 0x200 );
if ( mov->mode == MODE_3GP )
put_tag(pb, "3gp4");
else if ( mov->mode == MODE_3G2 )
put_tag(pb, "3g2a");
else if ( mov->mode == MODE_PSP )
put_tag(pb, "MSNV");
else if ( mov->mode == MODE_MP4 )
put_tag(pb, "mp41");
else
put_tag(pb, "qt ");
}
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;
MOVContext *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_3G2;
else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
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);
}
}
for(i=0; i<s->nb_streams; i++){
AVStream *st= s->streams[i];
MOVTrack *track= &mov->tracks[i];
track->enc = st->codec;
track->language = ff_mov_iso639_to_lang(st->language, mov->mode != MODE_MOV);
track->mode = mov->mode;
if(st->codec->codec_type == CODEC_TYPE_VIDEO){
track->tag = mov_find_video_codec_tag(s, track);
track->timescale = st->codec->time_base.den;
av_set_pts_info(st, 64, 1, st->codec->time_base.den);
if (track->timescale > 100000)
av_log(NULL, 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->tag = mov_find_audio_codec_tag(s, track);
track->timescale = st->codec->sample_rate;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
if(!st->codec->frame_size){
av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);
return -1;
}else if(st->codec->frame_size > 1){ /* assume compressed audio */
track->audio_vbr = 1;
}else{
track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;
}
}
}
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;
}
static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVContext *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 */
avc_parse_nal_units(&pkt->data, &pkt->size);
assert(pkt->size);
size = pkt->size;
} else if (enc->codec_id == CODEC_ID_DNXHD && !trk->vosLen) {
/* copy frame header to create needed atoms */
if (size < 640)
return -1;
trk->vosLen = 640;
trk->vosData = av_malloc(trk->vosLen);
memcpy(trk->vosData, pkt->data, 640);
}
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);
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(enc->codec_type == CODEC_TYPE_VIDEO) {
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_buffer(pb, pkt->data, size);
put_flush_packet(pb);
return 0;
}
static int mov_write_trailer(AVFormatContext *s)
{
MOVContext *mov = s->priv_data;
ByteIOContext *pb = s->pb;
int res = 0;
int i;
offset_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);
return res;
}
#ifdef CONFIG_MOV_MUXER
AVOutputFormat mov_muxer = {
"mov",
"mov format",
NULL,
"mov",
sizeof(MOVContext),
CODEC_ID_AAC,
CODEC_ID_MPEG4,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
#endif
#ifdef CONFIG_TGP_MUXER
AVOutputFormat tgp_muxer = {
"3gp",
"3gp format",
NULL,
"3gp",
sizeof(MOVContext),
CODEC_ID_AMR_NB,
CODEC_ID_H263,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
#endif
#ifdef CONFIG_MP4_MUXER
AVOutputFormat mp4_muxer = {
"mp4",
"mp4 format",
"application/mp4",
"mp4,m4a",
sizeof(MOVContext),
CODEC_ID_AAC,
CODEC_ID_MPEG4,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
#endif
#ifdef CONFIG_PSP_MUXER
AVOutputFormat psp_muxer = {
"psp",
"psp mp4 format",
NULL,
"mp4,psp",
sizeof(MOVContext),
CODEC_ID_AAC,
CODEC_ID_MPEG4,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
#endif
#ifdef CONFIG_TG2_MUXER
AVOutputFormat tg2_muxer = {
"3g2",
"3gp2 format",
NULL,
"3g2",
sizeof(MOVContext),
CODEC_ID_AMR_NB,
CODEC_ID_H263,
mov_write_header,
mov_write_packet,
mov_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
#endif