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ffmpeg/libavformat/movenc.c

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/*
* MOV, 3GP, MP4 encoder.
* Copyright (c) 2003 Thomas Raivio.
* Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "avi.h"
#include "avio.h"
#include "mov.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;
} MOVIentry;
typedef struct MOVIndex {
int mode;
int entry;
uint64_t mdat_size;
int ents_allocated;
long timescale;
long time;
int64_t trackDuration;
long sampleCount;
long sampleDuration;
int hasKeyframes;
int hasBframes;
int language;
int trackID;
AVCodecContext *enc;
int vosLen;
uint8_t *vosData;
MOVIentry** cluster;
} MOVTrack;
typedef struct MOVContext {
int mode;
int64_t time;
int nb_streams;
offset_t mdat_pos;
long timescale;
MOVTrack tracks[MAX_STREAMS];
} MOVContext;
static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track);
//FIXME supprt 64bit varaint 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++) {
int cl = i / MOV_INDEX_CLUSTER_SIZE;
int id = i % MOV_INDEX_CLUSTER_SIZE;
if(mode64 == 1)
put_be64(pb, track->cluster[cl][id].pos);
else
put_be32(pb, track->cluster[cl][id].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++) {
int cl = i / MOV_INDEX_CLUSTER_SIZE;
int id = i % MOV_INDEX_CLUSTER_SIZE;
tst = track->cluster[cl][id].size/track->cluster[cl][id].entries;
if(oldtst != -1 && tst != oldtst) {
equalChunks = 0;
}
oldtst = tst;
entries += track->cluster[cl][id].entries;
}
if (equalChunks) {
int sSize = track->cluster[0][0].size/track->cluster[0][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++) {
int cl = i / MOV_INDEX_CLUSTER_SIZE;
int id = i % MOV_INDEX_CLUSTER_SIZE;
for ( j=0; j<track->cluster[cl][id].entries; j++) {
put_be32(pb, track->cluster[cl][id].size /
track->cluster[cl][id].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++) {
int cl = i / MOV_INDEX_CLUSTER_SIZE;
int id = i % MOV_INDEX_CLUSTER_SIZE;
if(oldval != track->cluster[cl][id].samplesInChunk)
{
put_be32(pb, i+1); // first chunk
put_be32(pb, track->cluster[cl][id].samplesInChunk); // samples per chunk
put_be32(pb, 0x1); // sample description index
oldval = track->cluster[cl][id].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++) {
int cl = i / MOV_INDEX_CLUSTER_SIZE;
int id = i % MOV_INDEX_CLUSTER_SIZE;
if(track->cluster[cl][id].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_damr_tag(ByteIOContext *pb)
{
put_be32(pb, 0x11); /* size */
put_tag(pb, "damr");
put_tag(pb, "FFMP");
put_byte(pb, 0);
put_be16(pb, 0x80); /* Mode set (all modes for AMR_NB) */
put_be16(pb, 0xa); /* Mode change period (no restriction) */
//put_be16(pb, 0x81ff); /* Mode set (all modes for AMR_NB) */
//put_be16(pb, 1); /* Mode change period (no restriction) */
return 0x11;
}
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_tag(pb, "mp4a");
put_be32(pb, 12); /* size */
put_tag(pb, "mp4a");
put_be32(pb, 0);
mov_write_esds_tag(pb, track);
put_be32(pb, 12); /* size */
put_tag(pb, "srcq");
put_be32(pb, 0x40);
put_be32(pb, 8); /* size */
put_be32(pb, 0); /* null tag */
return updateSize (pb, pos);
}
static const CodecTag codec_movaudio_tags[] = {
{ CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') },
{ CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') },
{ CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') },
{ CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') },
{ CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') },
{ 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_PCM_S16BE, MKTAG('t', 'w', 'o', 's') },
{ CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') },
{ CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') },
{ CODEC_ID_NONE, 0 },
};
static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
{
offset_t pos = url_ftell(pb);
int tag;
put_be32(pb, 0); /* size */
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 tmp = codec_get_tag(codec_wav_tags, track->enc->codec_id);
tag = MKTAG('m', 's', ((tmp >> 8) & 0xff), (tmp & 0xff));
}
put_le32(pb, tag); // store it byteswapped
put_be32(pb, 0); /* Reserved */
put_be16(pb, 0); /* Reserved */
put_be16(pb, 1); /* Data-reference index, XXX == 1 */
/* SoundDescription */
if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
put_be16(pb, 1); /* Version 1 */
else
put_be16(pb, 0); /* Version 0 */
put_be16(pb, 0); /* Revision level */
put_be32(pb, 0); /* Reserved */
put_be16(pb, track->enc->channels); /* Number of channels */
/* TODO: Currently hard-coded to 16-bit, there doesn't seem
to be a good way to get number of bits of audio */
put_be16(pb, 0x10); /* Reserved */
if(track->enc->codec_id == CODEC_ID_AAC ||
track->enc->codec_id == CODEC_ID_MP3)
{
put_be16(pb, 0xfffe); /* compression ID (vbr)*/
}
else
{
put_be16(pb, 0); /* compression ID (= 0) */
}
put_be16(pb, 0); /* packet size (= 0) */
put_be16(pb, track->timescale); /* Time scale */
put_be16(pb, 0); /* Reserved */
if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
{
/* SoundDescription V1 extended info */
put_be32(pb, track->enc->frame_size); /* Samples per packet */
put_be32(pb, 1536); /* Bytes per packet */
put_be32(pb, 2); /* Bytes per frame */
put_be32(pb, 2); /* Bytes per sample */
}
if(track->enc->codec_id == CODEC_ID_AAC) {
if( track->mode == MODE_MOV ) mov_write_wave_tag(pb, track);
else mov_write_esds_tag(pb, track);
}
if(track->enc->codec_id == CODEC_ID_AMR_NB)
mov_write_damr_tag(pb);
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_be16(pb, 0x0a);
put_byte(pb, 0);
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 - ((int)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;
if( p[2] == 0 && p[3] == 1 )
return p+1;
}
if( p[3] == 0 ) {
if( p[2] == 0 && p[4] == 1 )
return p+2;
if( p[4] == 0 && p[5] == 1 )
return p+3;
}
}
}
for( end += 3; p < end; p++ ) {
if( p[0] == 0 && p[1] == 0 && p[2] == 1 )
return p;
}
return end + 3;
}
static void 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;
url_open_dyn_buf(&pb);
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);
}
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 (BE_32(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 = BE_32(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);
}
static unsigned int descrLength(unsigned int len)
{
if (len < 0x00000080)
return 2 + len;
else if (len < 0x00004000)
return 3 + len;
else if(len < 0x00200000)
return 4 + len;
else
return 5 + len;
}
static void putDescr(ByteIOContext *pb, int tag, int size)
{
uint32_t len;
uint8_t vals[4];
len = size;
vals[3] = (uint8_t)(len & 0x7f);
len >>= 7;
vals[2] = (uint8_t)((len & 0x7f) | 0x80);
len >>= 7;
vals[1] = (uint8_t)((len & 0x7f) | 0x80);
len >>= 7;
vals[0] = (uint8_t)((len & 0x7f) | 0x80);
put_byte(pb, tag); // DescriptorTag
if (size < 0x00000080)
{
put_byte(pb, vals[3]);
}
else if (size < 0x00004000)
{
put_byte(pb, vals[2]);
put_byte(pb, vals[3]);
}
else if (size < 0x00200000)
{
put_byte(pb, vals[1]);
put_byte(pb, vals[2]);
put_byte(pb, vals[3]);
}
else if (size < 0x10000000)
{
put_byte(pb, vals[0]);
put_byte(pb, vals[1]);
put_byte(pb, vals[2]);
put_byte(pb, vals[3]);
}
}
static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
{
int decoderSpecificInfoLen;
offset_t pos = url_ftell(pb);
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_mov_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 const CodecTag codec_movvideo_tags[] = {
{ CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') },
{ CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') },
{ CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
{ CODEC_ID_H263, MKTAG('s', '2', '6', '3') },
{ CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
/* special handling in mov_find_video_codec_tag */
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL */
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC */
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL */
{ CODEC_ID_NONE, 0 },
};
static int mov_find_video_codec_tag(MOVTrack* track)
{
int tag;
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 {
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);
assert(tag);
return tag;
}
static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
{
offset_t pos = url_ftell(pb);
char compressor_name[32];
int tag;
put_be32(pb, 0); /* size */
tag = mov_find_video_codec_tag(track);
put_le32(pb, 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) */
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 */
}
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);
if (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);
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)
{
Time2Sample *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][0].cts;
for (i=1; i<track->entry; i++) {
int cl = i / MOV_INDEX_CLUSTER_SIZE;
int id = i % MOV_INDEX_CLUSTER_SIZE;
if (track->cluster[cl][id].cts == ctts_entries[entries].duration) {
ctts_entries[entries].count++; /* compress */
} else {
entries++;
ctts_entries[entries].duration = track->cluster[cl][id].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;
}
/* TODO: */
/* Time to sample atom */
static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
{
put_be32(pb, 0x18); /* size */
put_tag(pb, "stts");
put_be32(pb, 0); /* version & flags */
put_be32(pb, 1); /* entry count */
put_be32(pb, track->sampleCount); /* sample count */
put_be32(pb, track->sampleDuration); /* sample duration */
return 0x18;
}
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)
{
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) */
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 */
if (track->hasBframes)
put_be32(pb, track->sampleDuration); /* first pts is 1 */
else
put_be32(pb, 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<MAX_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, MOVContext* mov,
AVFormatContext *s, const char *data)
{
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);
}
/* iTunes name of the song/movie */
static int mov_write_nam_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->title[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251nam");
mov_write_string_data_tag(pb, mov, s, s->title);
size = updateSize(pb, pos);
}
return size;
}
/* iTunes name of the artist/performer */
static int mov_write_ART_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->author[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251ART");
// we use the author here as this is the only thing that we have...
mov_write_string_data_tag(pb, mov, s, s->author);
size = updateSize(pb, pos);
}
return size;
}
/* iTunes name of the writer */
static int mov_write_wrt_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->author[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251wrt");
mov_write_string_data_tag(pb, mov, s, s->author);
size = updateSize(pb, pos);
}
return size;
}
/* iTunes name of the album */
static int mov_write_alb_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->album[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251alb");
mov_write_string_data_tag(pb, mov, s, s->album);
size = updateSize(pb, pos);
}
return size;
}
/* iTunes year */
static int mov_write_day_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
char year[5];
int size = 0;
if ( s->year ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251day");
snprintf(year, 5, "%04d", s->year);
mov_write_string_data_tag(pb, mov, s, year);
size = updateSize(pb, pos);
}
return size;
}
/* iTunes tool used to create the file */
static int mov_write_too_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251too");
mov_write_string_data_tag(pb, mov, s, LIBAVFORMAT_IDENT);
return updateSize(pb, pos);
}
/* iTunes comment */
static int mov_write_cmt_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->comment[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251cmt");
mov_write_string_data_tag(pb, mov, s, s->comment);
size = updateSize(pb, pos);
}
return size;
}
/* iTunes custom genre */
static int mov_write_gen_tag(ByteIOContext *pb, MOVContext* mov,
AVFormatContext *s)
{
int size = 0;
if ( s->genre[0] ) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251gen");
mov_write_string_data_tag(pb, mov, s, s->genre);
size = updateSize(pb, pos);
}
return size;
}
/* 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_nam_tag(pb, mov, s);
mov_write_ART_tag(pb, mov, s);
mov_write_wrt_tag(pb, mov, s);
mov_write_alb_tag(pb, mov, s);
mov_write_day_tag(pb, mov, s);
mov_write_too_tag(pb, mov, s);
mov_write_cmt_tag(pb, mov, s);
mov_write_gen_tag(pb, mov, s);
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)
{
offset_t pos = url_ftell(pb);
int i;
put_be32(pb, 0); /* size */
put_tag(pb, "udta");
/* iTunes meta data */
mov_write_meta_tag(pb, mov, s);
/* Requirements */
for (i=0; i<MAX_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) {
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251req");
put_be16(pb, sizeof("QuickTime 6.0 or greater") - 1);
put_be16(pb, 0);
put_buffer(pb, "QuickTime 6.0 or greater",
sizeof("QuickTime 6.0 or greater") - 1);
updateSize(pb, pos);
break;
}
}
/* Encoder */
if(mov->tracks[0].enc && !(mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT))
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251enc");
put_be16(pb, sizeof(LIBAVFORMAT_IDENT) - 1); /* string length */
put_be16(pb, 0);
put_buffer(pb, LIBAVFORMAT_IDENT, sizeof(LIBAVFORMAT_IDENT) - 1);
updateSize(pb, pos);
}
if( s->title[0] )
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251nam");
put_be16(pb, strlen(s->title)); /* string length */
put_be16(pb, 0);
put_buffer(pb, s->title, strlen(s->title));
updateSize(pb, pos);
}
if( s->author[0] )
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, /*"\251aut"*/ "\251day" );
put_be16(pb, strlen(s->author)); /* string length */
put_be16(pb, 0);
put_buffer(pb, s->author, strlen(s->author));
updateSize(pb, pos);
}
if( s->comment[0] )
{
offset_t pos = url_ftell(pb);
put_be32(pb, 0); /* size */
put_tag(pb, "\251des");
put_be16(pb, strlen(s->comment)); /* string length */
put_be16(pb, 0);
put_buffer(pb, s->comment, strlen(s->comment));
updateSize(pb, pos);
}
return updateSize(pb, pos);
}
static size_t ascii_to_wc (ByteIOContext *pb, char *b, size_t n)
{
size_t i;
unsigned char c;
for (i = 0; i < n - 1; i++) {
c = b[i];
if (! (0x20 <= c && c <= 0x7f ))
c = 0x3f; /* '?' */
put_be16(pb, c);
}
put_be16(pb, 0x00);
return 2*n;
}
static uint16_t language_code (char *str)
{
return ((((str[0]-'a') & 0x1F)<<10) + (((str[1]-'a') & 0x1F)<<5) + ((str[2]-'a') & 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, 1);
size += 10;
// Title
len = strlen(s->title)+1;
put_be16(pb, len*2+10); /* size */
put_be32(pb, 0x01); /* type */
put_be16(pb, language_code("und")); /* language */
put_be16(pb, 0x01); /* ? */
ascii_to_wc (pb, s->title, len);
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;
}
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<MAX_STREAMS; i++) {
if(mov->tracks[i].entry <= 0) continue;
if(mov->tracks[i].enc->codec_type == CODEC_TYPE_VIDEO) {
mov->tracks[i].timescale = mov->tracks[i].enc->time_base.den;
mov->tracks[i].sampleDuration = mov->tracks[i].enc->time_base.num;
}
else if(mov->tracks[i].enc->codec_type == CODEC_TYPE_AUDIO) {
/* If AMR, track timescale = 8000, AMR_WB = 16000 */
if(mov->tracks[i].enc->codec_id == CODEC_ID_AMR_NB) {
mov->tracks[i].sampleDuration = 160; // Bytes per chunk
mov->tracks[i].timescale = 8000;
}
else {
mov->tracks[i].timescale = mov->tracks[i].enc->sample_rate;
mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_size;
}
}
mov->tracks[i].trackDuration =
(int64_t)mov->tracks[i].sampleCount * mov->tracks[i].sampleDuration;
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<MAX_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
mov_write_udta_tag(pb, mov, s);
return updateSize(pb, pos);
}
int mov_write_mdat_tag(ByteIOContext *pb, MOVContext* mov)
{
put_be32(pb, 8); // placeholder for extended size field (64 bit)
put_tag(pb, "wide");
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;
/* 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++){
AVCodecContext *c= s->streams[i]->codec;
if(c->codec_type == CODEC_TYPE_VIDEO){
av_set_pts_info(s->streams[i], 64, 1, c->time_base.den);
if (!codec_get_tag(codec_movvideo_tags, c->codec_id)){
if(!codec_get_tag(codec_bmp_tags, c->codec_id))
return -1;
else
av_log(s, AV_LOG_INFO, "Warning, using MS style video codec tag, the file may be unplayable!\n");
}
}else if(c->codec_type == CODEC_TYPE_AUDIO){
av_set_pts_info(s->streams[i], 64, 1, c->sample_rate);
if (!codec_get_tag(codec_movaudio_tags, c->codec_id)){
if(!codec_get_tag(codec_wav_tags, c->codec_id))
return -1;
else
av_log(s, AV_LOG_INFO, "Warning, using MS style audio codec tag, the file may be unplayable!\n");
}
}
mov->tracks[i].language = ff_mov_iso639_to_lang(s->streams[i]->language, mov->mode != MODE_MOV);
}
for (i=0; i<MAX_STREAMS; i++) {
mov->tracks[i].mode = mov->mode;
}
mov_write_mdat_tag(pb, mov);
mov->time = s->timestamp + 0x7C25B080; //1970 based -> 1904 based
put_flush_packet(pb);
return 0;
}
static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVContext *mov = s->priv_data;
ByteIOContext *pb = &s->pb;
AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
MOVTrack* trk = &mov->tracks[pkt->stream_index];
int cl, id;
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_type == CODEC_TYPE_AUDIO) {
switch (enc->codec_id) {
case 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++;
}
}
break;
case CODEC_ID_PCM_ALAW:
samplesInChunk = size/enc->channels;
break;
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S16LE:
samplesInChunk = size/(2*enc->channels);
break;
default:
samplesInChunk = 1;
}
} 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;
}
cl = trk->entry / MOV_INDEX_CLUSTER_SIZE;
id = trk->entry % MOV_INDEX_CLUSTER_SIZE;
if (trk->ents_allocated <= trk->entry) {
trk->cluster = av_realloc(trk->cluster, (cl+1)*sizeof(void*));
if (!trk->cluster)
return -1;
trk->cluster[cl] = av_malloc(MOV_INDEX_CLUSTER_SIZE*sizeof(MOVIentry));
if (!trk->cluster[cl])
return -1;
trk->ents_allocated += MOV_INDEX_CLUSTER_SIZE;
}
trk->cluster[cl][id].pos = url_ftell(pb);
trk->cluster[cl][id].samplesInChunk = samplesInChunk;
trk->cluster[cl][id].size = size;
trk->cluster[cl][id].entries = samplesInChunk;
if(enc->codec_type == CODEC_TYPE_VIDEO) {
if (pkt->dts != pkt->pts)
trk->hasBframes = 1;
trk->cluster[cl][id].cts = pkt->pts - pkt->dts;
trk->cluster[cl][id].key_frame = !!(pkt->flags & PKT_FLAG_KEY);
if(trk->cluster[cl][id].key_frame)
trk->hasKeyframes++;
}
trk->enc = enc;
trk->entry++;
trk->sampleCount += samplesInChunk;
trk->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;
uint64_t j;
offset_t moov_pos = url_ftell(pb);
/* Write size of mdat tag */
for (i=0, j=0; i<MAX_STREAMS; i++) {
if(mov->tracks[i].ents_allocated > 0) {
j += mov->tracks[i].mdat_size;
}
}
if (j+8 <= UINT32_MAX) {
url_fseek(pb, mov->mdat_pos, SEEK_SET);
put_be32(pb, j+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, j+16);
}
url_fseek(pb, moov_pos, SEEK_SET);
mov_write_moov_tag(pb, mov, s);
for (i=0; i<MAX_STREAMS; i++) {
for (j=0; j<mov->tracks[i].ents_allocated/MOV_INDEX_CLUSTER_SIZE; j++) {
av_free(mov->tracks[i].cluster[j]);
}
av_free(mov->tracks[i].cluster);
if( mov->tracks[i].vosLen ) av_free( mov->tracks[i].vosData );
mov->tracks[i].cluster = NULL;
mov->tracks[i].ents_allocated = mov->tracks[i].entry = 0;
}
put_flush_packet(pb);
return res;
}
static AVOutputFormat mov_oformat = {
"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,
};
static AVOutputFormat _3gp_oformat = {
"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,
};
static AVOutputFormat mp4_oformat = {
"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,
};
static AVOutputFormat psp_oformat = {
"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,
};
static AVOutputFormat _3g2_oformat = {
"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,
};
int movenc_init(void)
{
av_register_output_format(&mov_oformat);
av_register_output_format(&_3gp_oformat);
av_register_output_format(&mp4_oformat);
av_register_output_format(&psp_oformat);
av_register_output_format(&_3g2_oformat);
return 0;
}
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