2
* MOV, 3GP, MP4 encoder.
3
* Copyright (c) 2003 Thomas Raivio.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* - Currently supports h.263, MPEG4 video codecs, and AMR audio codec.
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#define MOV_INDEX_CLUSTER_SIZE 16384
32
#define globalTimescale 1000
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typedef struct MOVIentry {
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unsigned int flags, pos, len;
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typedef struct MOVIndex {
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MOVTrack tracks[MAX_STREAMS];
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//FIXME supprt 64bit varaint with wide placeholders
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static int updateSize (ByteIOContext *pb, int pos)
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long curpos = url_ftell(pb);
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url_fseek(pb, pos, SEEK_SET);
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put_be32(pb, curpos - pos); /* rewrite size */
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url_fseek(pb, curpos, SEEK_SET);
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static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
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put_be32(pb, 16+track->entry*4); /* size */
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put_be32(pb, 0); /* version & flags */
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put_be32(pb, track->entry); /* entry count */
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for (i=0; i<track->entry; i++) {
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int cl = i / MOV_INDEX_CLUSTER_SIZE;
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int id = i % MOV_INDEX_CLUSTER_SIZE;
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put_be32(pb, track->cluster[cl][id].pos);
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return 16+track->entry*4;
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static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack* track)
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if(track->cluster[0][0].entries != 0)
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size = 20+track->samples*4;
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put_be32(pb, size); /* size */
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put_be32(pb, 0); /* version & flags */
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/* TODO: Ugly (and false) assumption: if we have a chunk of samples, assume
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* all sizes are same */
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if(track->cluster[0][0].entries != 0) {
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int sSize = track->cluster[0][0].len/track->cluster[0][0].entries;
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put_be32(pb, sSize); /* sample size */
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put_be32(pb, track->samples); /* sample count */
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put_be32(pb, 0); /* sample size */
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put_be32(pb, track->samples); /* sample count */
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for (i=0; i<track->samples; i++) {
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int cl = i / MOV_INDEX_CLUSTER_SIZE;
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int id = i % MOV_INDEX_CLUSTER_SIZE;
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put_be32(pb, track->cluster[cl][id].len);
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static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack* track)
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if(track->cluster[0][0].entries != 0)
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size = 16+track->entry*4*3;
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put_be32(pb, size); // size
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put_be32(pb, 0); // version & flags
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if(track->cluster[0][0].entries != 0) {
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put_be32(pb, track->entry); // entry count
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for (i=0; i<track->entry; i++) {
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int cl = i / MOV_INDEX_CLUSTER_SIZE;
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int id = i % MOV_INDEX_CLUSTER_SIZE;
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put_be32(pb, i+1); // first chunk
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put_be32(pb, track->cluster[cl][id].entries);
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put_be32(pb, 0x1); // sample description index
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put_be32(pb, 1); // entry count
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put_be32(pb, 0x1); // first chunk
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put_be32(pb, 0x1); // samples per chunk
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put_be32(pb, 0x1); // sample description index
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static int mov_write_stss_tag(ByteIOContext *pb) //TRA OK
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put_be32(pb, 0x14); /* size */
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put_be32(pb, 0); /* version & flags */
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put_be32(pb, 1); /* entry count */
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put_be32(pb, 0x1); /* sample number */
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static int mov_write_damr_tag(ByteIOContext *pb)
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put_be32(pb, 0x11); /* size */
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put_be16(pb, 0x81ff); /* Mode set (all modes for AMR_NB) */
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put_be16(pb, 1); /* Mode change period (no restriction) */
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static int mov_write_samr_tag(ByteIOContext *pb, MOVTrack* track)
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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/* "samr" for AMR NB, "sawb" for AMR WB */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, 0); /* Reserved */
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put_be16(pb, 1); /* Data-reference index, XXX == 1 */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, 2); /* Reserved */
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put_be16(pb, 0x10); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, track->timescale); /* Time scale */
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put_be16(pb, 0); /* Reserved */
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mov_write_damr_tag(pb);
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return updateSize (pb, pos);
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static int mov_write_d263_tag(ByteIOContext *pb)
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put_be32(pb, 0xf); /* size */
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static int mov_write_s263_tag(ByteIOContext *pb, MOVTrack* track)
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, 0); /* Reserved */
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put_be16(pb, 1); /* Data-reference index */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, track->enc->width); /* Video width */
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put_be16(pb, track->enc->height); /* Video height */
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put_be32(pb, 0x00480000); /* Reserved */
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put_be32(pb, 0x00480000); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, 1); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved */
233
put_be32(pb, 0); /* Reserved */
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put_be16(pb, 0x18); /* Reserved */
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put_be16(pb, 0xffff); /* Reserved */
236
mov_write_d263_tag(pb);
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return updateSize (pb, pos);
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static unsigned int esdsLength(unsigned int len)
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unsigned int result = 0;
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unsigned char b = len & 0x7f;
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b = (len >> 8) & 0x7f;
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result += (b + 0x80) << 8;
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b = (len >> 16) & 0x7f;
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result += (b + 0x80) << 16;
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b = (len >> 24) & 0x7f;
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result += (b + 0x80) << 24;
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static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
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put_be32(pb, track->vosLen+18+14+17);
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put_be32(pb, 0); // Version
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put_byte(pb, 0x03); // tag = ES_DescriptorTag
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put_be32(pb, esdsLength(track->vosLen+18+14)); // Length
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put_be16(pb, 0x0001); // ID (= 1)
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put_byte(pb, 0x00); // flags (= no flags)
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// Decoderconfigdescriptor = 4
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put_byte(pb, 0x04); // tag = DecoderConfigDescriptor
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put_be32(pb, esdsLength(track->vosLen+18)); // Length
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put_byte(pb, 0x20); // Object type indication (Visual 14496-2)
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put_byte(pb, 0x11); // flags (= Visualstream)
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put_byte(pb, 0x0); // Buffersize DB (24 bits)
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put_be16(pb, 0x0dd2); // Buffersize DB
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// TODO: find real values for these
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put_be32(pb, 0x0002e918); // maxbitrate
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put_be32(pb, 0x00017e6b); // avg bitrate
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// Decoderspecific info Tag = 5
278
put_byte(pb, 0x05); // tag = Decoderspecific info
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put_be32(pb, esdsLength(track->vosLen)); // length
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put_buffer(pb, track->vosData, track->vosLen);
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put_be32(pb, esdsLength(1)); // length
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return track->vosLen+18+14+17;
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static int mov_write_mp4v_tag(ByteIOContext *pb, MOVTrack* track) // Basic
290
int pos = url_ftell(pb);
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put_be32(pb, 0); // Reserved
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put_be16(pb, 0); // Reserved
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put_be16(pb, 1); // Data-reference index
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put_be32(pb, 0); // Reserved
298
put_be32(pb, 0); // Reserved
299
put_be32(pb, 0); // Reserved
300
put_be32(pb, 0); // Reserved
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put_be16(pb, track->enc->width); // Width
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put_be16(pb, track->enc->height); // Height
303
put_be32(pb, 0x00480000); // Reserved
304
put_be32(pb, 0x00480000); // Reserved
305
put_be32(pb, 0); // Reserved
306
put_be16(pb, 1); // Reserved
307
put_be32(pb, 0); // Reserved
308
put_be32(pb, 0); // Reserved
309
put_be32(pb, 0); // Reserved
310
put_be32(pb, 0); // Reserved
311
put_be32(pb, 0); // Reserved
312
put_be32(pb, 0); // Reserved
313
put_be32(pb, 0); // Reserved
314
put_be32(pb, 0); // Reserved
315
put_be16(pb, 24); // Reserved
316
put_be16(pb, 0xFFFF); // Reserved
317
mov_write_esds_tag(pb, track);
318
return updateSize(pb, pos);
321
static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack* track)
323
int pos = url_ftell(pb);
324
put_be32(pb, 0); /* size */
326
put_be32(pb, 0); /* version & flags */
327
put_be32(pb, 1); /* entry count */
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if (track->enc->codec_type == CODEC_TYPE_VIDEO) {
329
if (track->enc->codec_id == CODEC_ID_H263)
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mov_write_s263_tag(pb, track);
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else if (track->enc->codec_id == CODEC_ID_MPEG4)
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mov_write_mp4v_tag(pb, track);
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else if (track->enc->codec_type == CODEC_TYPE_AUDIO) {
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if (track->enc->codec_id == CODEC_ID_AMR_NB)
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mov_write_samr_tag(pb, track);
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return updateSize(pb, pos);
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static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
343
put_be32(pb, 0x18); /* size */
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put_be32(pb, 0); /* version & flags */
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put_be32(pb, 1); /* entry count */
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put_be32(pb, track->samples); /* sample count */
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put_be32(pb, track->sampleDelta); /* sample delta */
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static int mov_write_dref_tag(ByteIOContext *pb)
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put_be32(pb, 28); /* size */
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put_be32(pb, 0); /* version & flags */
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put_be32(pb, 1); /* entry count */
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put_be32(pb, 0xc); /* size */
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put_be32(pb, 1); /* version & flags */
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static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack* track)
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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mov_write_stsd_tag(pb, track);
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mov_write_stts_tag(pb, track);
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if (track->enc->codec_type == CODEC_TYPE_VIDEO)
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mov_write_stss_tag(pb);
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mov_write_stsc_tag(pb, track);
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mov_write_stsz_tag(pb, track);
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mov_write_stco_tag(pb, track);
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return updateSize(pb, pos);
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static int mov_write_dinf_tag(ByteIOContext *pb)
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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mov_write_dref_tag(pb);
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return updateSize(pb, pos);
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static int mov_write_smhd_tag(ByteIOContext *pb)
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put_be32(pb, 16); /* size */
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put_be32(pb, 0); /* version & flags */
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put_be16(pb, 0); /* reserved (balance, normally = 0) */
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put_be16(pb, 0); /* reserved */
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static int mov_write_vmhd_tag(ByteIOContext *pb)
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put_be32(pb, 0x14); /* size (always 0x14) */
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put_be32(pb, 0x01); /* version & flags */
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put_be64(pb, 0); /* reserved (graphics mode = copy) */
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static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack* track)
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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if(track->enc->codec_type == CODEC_TYPE_VIDEO)
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mov_write_vmhd_tag(pb);
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mov_write_smhd_tag(pb);
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mov_write_dinf_tag(pb);
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mov_write_stbl_tag(pb, track);
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return updateSize(pb, pos);
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static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack* track)
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put_be32(pb, size); /* size */
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put_be32(pb, 0); /* Version & flags */
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put_be32(pb, 0); /* reserved */
432
if(track->enc->codec_type == CODEC_TYPE_VIDEO)
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put_tag(pb, "vide"); /* handler type */
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put_tag(pb, "soun"); /* handler type */
436
put_byte(pb, 0); /* reserved */
437
put_byte(pb, 0); /* reserved */
438
put_byte(pb, 0); /* reserved */
439
put_byte(pb, 0); /* reserved */
440
put_byte(pb, 0); /* reserved */
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put_byte(pb, 0); /* reserved */
442
put_byte(pb, 0); /* reserved */
443
put_byte(pb, 0); /* reserved */
444
put_byte(pb, 0); /* reserved */
445
put_byte(pb, 0); /* reserved */
446
put_byte(pb, 0); /* reserved */
447
put_byte(pb, 0); /* reserved */
448
if(track->enc->codec_type == CODEC_TYPE_VIDEO)
449
put_buffer(pb, "VideoHandler", 13);
451
put_buffer(pb, "SoundHandler", 13);
455
static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack* track)
457
put_be32(pb, 32); /* size */
459
put_be32(pb, 0); /* Version & flags */
460
put_be32(pb, track->time); /* creation time */
461
put_be32(pb, track->time); /* modification time */
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put_be32(pb, track->timescale); /* time scale */
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put_be32(pb, track->timescale*track->entry*track->frameDuration/globalTimescale); /* duration */
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put_be16(pb, 0); /* language, 0 = english */
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put_be16(pb, 0); /* reserved (quality) */
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static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack* track)
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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mov_write_mdhd_tag(pb, track);
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mov_write_hdlr_tag(pb, track);
477
mov_write_minf_tag(pb, track);
478
return updateSize(pb, pos);
481
static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack* track)
483
put_be32(pb, 0x5c); /* size (always 0x5c) */
485
put_be32(pb, 1); /* version & flags (track enabled) */
486
put_be32(pb, track->time); /* creation time */
487
put_be32(pb, track->time); /* modification time */
488
put_be32(pb, track->trackID); /* track-id */
489
put_be32(pb, 0); /* reserved */
490
put_be32(pb, track->entry*track->frameDuration); /* duration */
492
put_be32(pb, 0); /* reserved */
493
put_be32(pb, 0); /* reserved */
494
put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */
495
/* Volume, only for audio */
496
if(track->enc->codec_type == CODEC_TYPE_AUDIO)
497
put_be16(pb, 0x0100);
500
put_be16(pb, 0); /* reserved */
502
/* Matrix structure */
503
put_be32(pb, 0x00010000); /* reserved */
504
put_be32(pb, 0x0); /* reserved */
505
put_be32(pb, 0x0); /* reserved */
506
put_be32(pb, 0x0); /* reserved */
507
put_be32(pb, 0x00010000); /* reserved */
508
put_be32(pb, 0x0); /* reserved */
509
put_be32(pb, 0x0); /* reserved */
510
put_be32(pb, 0x0); /* reserved */
511
put_be32(pb, 0x40000000); /* reserved */
513
/* Track width and height, for visual only */
514
if(track->enc->codec_type == CODEC_TYPE_VIDEO) {
515
put_be32(pb, 0x01400000);
516
put_be32(pb, 0x00f00000);
525
static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack* track)
527
int pos = url_ftell(pb);
528
put_be32(pb, 0); /* size */
530
mov_write_tkhd_tag(pb, track);
531
mov_write_mdia_tag(pb, track);
532
return updateSize(pb, pos);
535
/* TODO: Not sorted out, but not necessary either */
536
static int mov_write_iods_tag(ByteIOContext *pb, MOVContext *mov)
538
put_be32(pb, 0x15); /* size */
540
put_be32(pb, 0); /* version & flags */
541
put_be16(pb, 0x1007);
543
put_be16(pb, 0x4fff);
544
put_be16(pb, 0xfffe);
545
put_be16(pb, 0x01ff);
549
static int mov_write_mvhd_tag(ByteIOContext *pb, MOVContext *mov)
551
int maxTrackID = 1, maxTrackLen = 0, i;
553
put_be32(pb, 0x6c); /* size (always 0x6c) */
555
put_be32(pb, 0); /* version & flags */
556
put_be32(pb, mov->time); /* creation time */
557
put_be32(pb, mov->time); /* modification time */
558
put_be32(pb, mov->timescale); /* timescale */
559
for (i=0; i<MAX_STREAMS; i++) {
560
if(mov->tracks[i].entry > 0) {
561
if(maxTrackLen < mov->tracks[i].entry*mov->tracks[i].frameDuration)
562
maxTrackLen = mov->tracks[i].entry*mov->tracks[i].frameDuration;
563
if(maxTrackID < mov->tracks[i].trackID)
564
maxTrackID = mov->tracks[i].trackID;
567
put_be32(pb, maxTrackLen); /* duration of longest track */
569
put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
570
put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
571
put_be16(pb, 0); /* reserved */
572
put_be32(pb, 0); /* reserved */
573
put_be32(pb, 0); /* reserved */
575
/* Matrix structure */
576
put_be32(pb, 0x00010000); /* reserved */
577
put_be32(pb, 0x0); /* reserved */
578
put_be32(pb, 0x0); /* reserved */
579
put_be32(pb, 0x0); /* reserved */
580
put_be32(pb, 0x00010000); /* reserved */
581
put_be32(pb, 0x0); /* reserved */
582
put_be32(pb, 0x0); /* reserved */
583
put_be32(pb, 0x0); /* reserved */
584
put_be32(pb, 0x40000000); /* reserved */
586
put_be32(pb, 0); /* reserved (preview time) */
587
put_be32(pb, 0); /* reserved (preview duration) */
588
put_be32(pb, 0); /* reserved (poster time) */
589
put_be32(pb, 0); /* reserved (selection time) */
590
put_be32(pb, 0); /* reserved (selection duration) */
591
put_be32(pb, 0); /* reserved (current time) */
592
put_be32(pb, maxTrackID+1); /* Next track id */
596
static int mov_write_moov_tag(ByteIOContext *pb, MOVContext *mov)
600
put_be32(pb, 0); /* size placeholder*/
602
mov->timescale = globalTimescale;
604
for (i=0; i<MAX_STREAMS; i++) {
605
if(mov->tracks[i].entry > 0) {
606
if(mov->tracks[i].enc->codec_type == CODEC_TYPE_VIDEO) {
607
mov->tracks[i].timescale = globalTimescale;
608
mov->tracks[i].sampleDelta = mov->tracks[i].frameDuration =
609
globalTimescale*mov->tracks[i].enc->frame_rate_base/mov->tracks[i].enc->frame_rate;
611
else if(mov->tracks[i].enc->codec_type == CODEC_TYPE_AUDIO) {
612
/* If AMR, track timescale = 8000, AMR_WB = 16000 */
613
if(mov->tracks[i].enc->codec_id == CODEC_ID_AMR_NB) {
614
mov->tracks[i].frameDuration = 20;
615
mov->tracks[i].sampleDelta = 160;
616
mov->tracks[i].timescale = 8000;
619
mov->tracks[i].timescale = globalTimescale;
620
mov->tracks[i].frameDuration =
621
globalTimescale*mov->tracks[i].enc->frame_rate_base/mov->tracks[i].enc->frame_rate;
624
mov->tracks[i].time = mov->time;
625
mov->tracks[i].trackID = i+1;
629
mov_write_mvhd_tag(pb, mov);
630
//mov_write_iods_tag(pb, mov);
631
for (i=0; i<MAX_STREAMS; i++) {
632
if(mov->tracks[i].entry > 0) {
633
mov_write_trak_tag(pb, &(mov->tracks[i]));
637
return updateSize(pb, pos);
640
int mov_write_mdat_tag(ByteIOContext *pb, MOVTrack* track)
642
track->mdat_pos = url_ftell(pb);
643
put_be32(pb, 0); /* size placeholder*/
648
/* TODO: This needs to be more general */
649
int mov_write_ftyp_tag(ByteIOContext *pb)
651
put_be32(pb, 0x14 ); /* size */
654
put_be32(pb, 0x200 );
659
static int mov_write_header(AVFormatContext *s)
661
ByteIOContext *pb = &s->pb;
664
mov_write_ftyp_tag(pb);
666
put_flush_packet(pb);
671
static int Timestamp() {
674
return ltime+(24107*86400);
677
static int mov_write_packet(AVFormatContext *s, int stream_index,
678
const uint8_t *buf, int size, int64_t pts)
680
MOVContext *mov = s->priv_data;
681
ByteIOContext *pb = &s->pb;
685
enc = &s->streams[stream_index]->codec;
686
if (!url_is_streamed(&s->pb)) {
687
MOVTrack* trk = &mov->tracks[stream_index];
690
/* We must find out how many AMR blocks there are in one packet */
691
if(enc->codec_id == CODEC_ID_AMR_NB) {
692
static uint16_t packed_size[16] = {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
695
while(len < size && sampleCount < 100) {
696
len += packed_size[(buf[len] >> 3) & 0x0F];
701
if(enc->codec_id == CODEC_ID_MPEG4 &&
704
assert(enc->extradata_size);
706
trk->vosLen = enc->extradata_size;
707
trk->vosData = av_malloc(trk->vosLen);
708
memcpy(trk->vosData, enc->extradata, trk->vosLen);
711
cl = trk->entry / MOV_INDEX_CLUSTER_SIZE;
712
id = trk->entry % MOV_INDEX_CLUSTER_SIZE;
714
if (trk->ents_allocated <= trk->entry) {
715
trk->cluster = av_realloc(trk->cluster, (cl+1)*sizeof(void*));
718
trk->cluster[cl] = av_malloc(MOV_INDEX_CLUSTER_SIZE*sizeof(MOVIentry));
719
if (!trk->cluster[cl])
721
trk->ents_allocated += MOV_INDEX_CLUSTER_SIZE;
723
if(stream_index == 0 && trk->entry == 0) {
724
mov_write_mdat_tag(pb, trk);
725
mov->time = Timestamp();
728
trk->cluster[cl][id].pos = url_ftell(pb) - mov->movi_list;
729
trk->cluster[cl][id].len = size;
730
trk->cluster[cl][id].entries = sampleCount;
736
trk->samples += sampleCount;
737
trk->mdat_size += size;
739
put_buffer(pb, buf, size);
741
put_flush_packet(pb);
745
static int mov_write_trailer(AVFormatContext *s)
747
MOVContext *mov = s->priv_data;
748
ByteIOContext *pb = &s->pb;
753
file_size = url_ftell(pb);
756
/* Write size of mdat tag */
757
for (i=0; i<MAX_STREAMS; i++) {
758
if(mov->tracks[i].ents_allocated > 0) {
759
j += mov->tracks[i].mdat_size;
762
url_fseek(pb, mov->tracks[0].mdat_pos, SEEK_SET);
764
url_fseek(pb, file_size, SEEK_SET);
766
mov_write_moov_tag(pb, mov);
768
for (i=0; i<MAX_STREAMS; i++) {
769
for (j=0; j<mov->tracks[i].ents_allocated/MOV_INDEX_CLUSTER_SIZE; j++) {
770
av_free(mov->tracks[i].cluster[j]);
772
av_free(mov->tracks[i].cluster);
773
mov->tracks[i].cluster = NULL;
774
mov->tracks[i].ents_allocated = mov->tracks[i].entry = 0;
776
put_flush_packet(pb);
781
static AVOutputFormat mov_oformat = {
794
static AVOutputFormat _3gp_oformat = {
807
static AVOutputFormat mp4_oformat = {
820
int movenc_init(void)
822
av_register_output_format(&mov_oformat);
823
av_register_output_format(&_3gp_oformat);
824
av_register_output_format(&mp4_oformat);