952 lines
28 KiB
C
952 lines
28 KiB
C
/*
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* MOV, 3GP, MP4 encoder.
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* Copyright (c) 2003 Thomas Raivio.
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* Enhancements by Gildas Bazin <gbazin@netcourrier.com>
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*
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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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*
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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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*
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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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*/
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#include "avformat.h"
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#include "avi.h"
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#include "avio.h"
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#undef NDEBUG
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#include <assert.h>
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#define MOV_INDEX_CLUSTER_SIZE 16384
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#define globalTimescale 1000
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typedef struct MOVIentry {
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unsigned int flags, pos, size;
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unsigned int samplesInChunk;
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char key_frame;
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unsigned int entries;
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} MOVIentry;
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typedef struct MOVIndex {
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int entry;
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int mdat_size;
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int ents_allocated;
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long timescale;
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long time;
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long trackDuration;
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long sampleCount;
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long sampleDuration;
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int hasKeyframes;
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int trackID;
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AVCodecContext *enc;
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int vosLen;
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uint8_t *vosData;
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MOVIentry** cluster;
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} MOVTrack;
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typedef struct {
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long time;
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int nb_streams;
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int mdat_written;
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offset_t mdat_pos;
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offset_t movi_list;
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long timescale;
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MOVTrack tracks[MAX_STREAMS];
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} MOVContext;
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static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track);
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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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{
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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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return curpos - pos;
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}
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/* Chunk offset atom */
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static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
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{
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int i;
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "stco");
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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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}
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return updateSize (pb, pos);
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}
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/* Sample size atom */
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static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack* track)
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{
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int equalChunks = 1;
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int i, j, entries = 0, tst = -1, oldtst = -1;
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "stsz");
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put_be32(pb, 0); /* version & flags */
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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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tst = track->cluster[cl][id].size/track->cluster[cl][id].entries;
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if(oldtst != -1 && tst != oldtst) {
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equalChunks = 0;
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}
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oldtst = tst;
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entries += track->cluster[cl][id].entries;
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}
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if (equalChunks) {
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int sSize = track->cluster[0][0].size/track->cluster[0][0].entries;
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put_be32(pb, sSize); // sample size
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put_be32(pb, entries); // sample count
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}
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else {
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put_be32(pb, 0); // sample size
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put_be32(pb, entries); // sample 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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for ( j=0; j<track->cluster[cl][id].entries; j++) {
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put_be32(pb, track->cluster[cl][id].size /
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track->cluster[cl][id].entries);
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}
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}
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}
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return updateSize (pb, pos);
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}
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/* Sample to chunk atom */
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static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack* track)
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{
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int index = 0, oldval = -1, i, entryPos, curpos;
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "stsc");
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put_be32(pb, 0); // version & flags
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entryPos = url_ftell(pb);
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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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if(oldval != track->cluster[cl][id].samplesInChunk)
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{
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put_be32(pb, i+1); // first chunk
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put_be32(pb, track->cluster[cl][id].samplesInChunk); // samples per chunk
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put_be32(pb, 0x1); // sample description index
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oldval = track->cluster[cl][id].samplesInChunk;
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index++;
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}
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}
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curpos = url_ftell(pb);
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url_fseek(pb, entryPos, SEEK_SET);
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put_be32(pb, index); // rewrite size
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url_fseek(pb, curpos, SEEK_SET);
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return updateSize (pb, pos);
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}
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/* Sync sample atom */
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static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack* track)
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{
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long curpos;
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int i, index = 0, entryPos;
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int pos = url_ftell(pb);
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put_be32(pb, 0); // size
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put_tag(pb, "stss");
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put_be32(pb, 0); // version & flags
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entryPos = url_ftell(pb);
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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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if(track->cluster[cl][id].key_frame == 1) {
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put_be32(pb, i+1);
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index++;
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}
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}
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curpos = url_ftell(pb);
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url_fseek(pb, entryPos, SEEK_SET);
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put_be32(pb, index); // rewrite size
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url_fseek(pb, curpos, SEEK_SET);
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return updateSize (pb, pos);
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}
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static int mov_write_damr_tag(ByteIOContext *pb)
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{
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put_be32(pb, 0x11); /* size */
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put_tag(pb, "damr");
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put_tag(pb, "FFMP");
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put_byte(pb, 0);
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put_be16(pb, 0x80); /* Mode set (all modes for AMR_NB) */
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put_be16(pb, 0xa); /* Mode change period (no restriction) */
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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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return 0x11;
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}
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static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
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{
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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_id == CODEC_ID_PCM_MULAW)
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put_tag(pb, "ulaw");
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else if(track->enc->codec_id == CODEC_ID_PCM_ALAW)
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put_tag(pb, "alaw");
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else if(track->enc->codec_id == CODEC_ID_ADPCM_IMA_QT)
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put_tag(pb, "ima4");
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else if(track->enc->codec_id == CODEC_ID_MACE3)
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put_tag(pb, "MAC3");
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else if(track->enc->codec_id == CODEC_ID_MACE6)
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put_tag(pb, "MAC6");
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else if(track->enc->codec_id == CODEC_ID_AAC)
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put_tag(pb, "mp4a");
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else if(track->enc->codec_id == CODEC_ID_AMR_NB)
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put_tag(pb, "samr");
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else
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put_tag(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, XXX == 1 */
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/* SoundDescription */
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put_be16(pb, 0); /* Version */
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put_be16(pb, 0); /* Revision level */
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put_be32(pb, 0); /* Reserved */
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put_be16(pb, track->enc->channels); /* Number of channels */
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/* TODO: Currently hard-coded to 16-bit, there doesn't seem
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to be a good way to get number of bits of audio */
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put_be16(pb, 0x10); /* Reserved */
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put_be16(pb, 0); /* compression ID (= 0) */
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put_be16(pb, 0); /* packet size (= 0) */
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put_be16(pb, track->timescale); /* Time scale */
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put_be16(pb, 0); /* Reserved */
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if(track->enc->codec_id == CODEC_ID_AAC)
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mov_write_esds_tag(pb, track);
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if(track->enc->codec_id == CODEC_ID_AMR_NB)
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mov_write_damr_tag(pb);
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return updateSize (pb, pos);
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}
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static int mov_write_d263_tag(ByteIOContext *pb)
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{
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put_be32(pb, 0xf); /* size */
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put_tag(pb, "d263");
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put_tag(pb, "FFMP");
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put_be16(pb, 0x0a);
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put_byte(pb, 0);
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return 0xf;
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}
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/* TODO: No idea about these values */
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static int mov_write_svq3_tag(ByteIOContext *pb)
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{
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put_be32(pb, 0x15);
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put_tag(pb, "SMI ");
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put_tag(pb, "SEQH");
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put_be32(pb, 0x5);
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put_be32(pb, 0xe2c0211d);
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put_be32(pb, 0xc0000000);
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put_byte(pb, 0);
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return 0x15;
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}
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static unsigned int descrLength(unsigned int len)
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{
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if (len < 0x00000080)
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return 2 + len;
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else if (len < 0x00004000)
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return 3 + len;
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else if(len < 0x00200000)
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return 4 + len;
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else
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return 5 + len;
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}
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static void putDescr(ByteIOContext *pb, int tag, int size)
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{
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uint32_t len;
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uint8_t vals[4];
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len = size;
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vals[3] = (uint8_t)(len & 0x7f);
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len >>= 7;
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vals[2] = (uint8_t)((len & 0x7f) | 0x80);
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len >>= 7;
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vals[1] = (uint8_t)((len & 0x7f) | 0x80);
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len >>= 7;
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vals[0] = (uint8_t)((len & 0x7f) | 0x80);
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put_byte(pb, tag); // DescriptorTag
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if (size < 0x00000080)
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{
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put_byte(pb, vals[3]);
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}
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else if (size < 0x00004000)
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{
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put_byte(pb, vals[2]);
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put_byte(pb, vals[3]);
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}
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else if (size < 0x00200000)
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{
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put_byte(pb, vals[1]);
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put_byte(pb, vals[2]);
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put_byte(pb, vals[3]);
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}
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else if (size < 0x10000000)
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{
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put_byte(pb, vals[0]);
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put_byte(pb, vals[1]);
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put_byte(pb, vals[2]);
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put_byte(pb, vals[3]);
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}
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}
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static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
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{
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int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;
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int pos = url_ftell(pb);
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put_be32(pb, 0); // size
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put_tag(pb, "esds");
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put_be32(pb, 0); // Version
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// ES descriptor
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putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +
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descrLength(1));
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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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// DecoderConfig descriptor
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putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
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if(track->enc->codec_id == CODEC_ID_AAC)
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put_byte(pb, 0x40); // Object type indication
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else if(track->enc->codec_id == CODEC_ID_MPEG4)
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put_byte(pb, 0x20); // Object type indication (Visual 14496-2)
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if(track->enc->codec_type == CODEC_TYPE_AUDIO)
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put_byte(pb, 0x15); // flags (= Audiostream)
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else
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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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if (track->vosLen)
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{
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// DecoderSpecific info descriptor
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putDescr(pb, 0x05, track->vosLen);
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put_buffer(pb, track->vosData, track->vosLen);
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}
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// SL descriptor
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putDescr(pb, 0x06, descrLength(1));
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put_byte(pb, 0x02);
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return updateSize (pb, pos);
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}
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static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
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{
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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_id == CODEC_ID_SVQ1)
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put_tag(pb, "SVQ1");
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else if(track->enc->codec_id == CODEC_ID_SVQ3)
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put_tag(pb, "SVQ3");
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else if(track->enc->codec_id == CODEC_ID_MPEG4)
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put_tag(pb, "mp4v");
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else if(track->enc->codec_id == CODEC_ID_H263)
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put_tag(pb, "s263");
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else
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put_tag(pb, " "); /* Unknown tag */
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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 (= 02000c) */
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put_be32(pb, 0); /* Reserved ("SVis")*/
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put_be32(pb, 0); /* Reserved */
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put_be32(pb, 0); /* Reserved (400)*/
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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_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_be16(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, 0x18); /* Reserved */
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put_be16(pb, 0xffff); /* Reserved */
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if(track->enc->codec_id == CODEC_ID_MPEG4)
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mov_write_esds_tag(pb, track);
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else if(track->enc->codec_id == CODEC_ID_H263)
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mov_write_d263_tag(pb);
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else if(track->enc->codec_id == CODEC_ID_SVQ3)
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mov_write_svq3_tag(pb);
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return updateSize (pb, pos);
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}
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static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack* track)
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{
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "stsd");
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put_be32(pb, 0); /* version & flags */
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put_be32(pb, 1); /* entry count */
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if (track->enc->codec_type == CODEC_TYPE_VIDEO)
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mov_write_video_tag(pb, track);
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else if (track->enc->codec_type == CODEC_TYPE_AUDIO)
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mov_write_audio_tag(pb, track);
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return updateSize(pb, pos);
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}
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/* TODO?: Currently all samples/frames seem to have same duration */
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/* Time to sample atom */
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static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
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{
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put_be32(pb, 0x18); /* size */
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put_tag(pb, "stts");
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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->sampleCount); /* sample count */
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put_be32(pb, track->sampleDuration); /* sample duration */
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return 0x18;
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}
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static int mov_write_dref_tag(ByteIOContext *pb)
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{
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put_be32(pb, 28); /* size */
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put_tag(pb, "dref");
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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_tag(pb, "url ");
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put_be32(pb, 1); /* version & flags */
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return 28;
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}
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static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack* track)
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{
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int pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "stbl");
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mov_write_stsd_tag(pb, track);
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mov_write_stts_tag(pb, track);
|
|
if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
|
|
track->hasKeyframes)
|
|
mov_write_stss_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)
|
|
{
|
|
int 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_minf_tag(ByteIOContext *pb, MOVTrack* track)
|
|
{
|
|
int 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);
|
|
mov_write_dinf_tag(pb);
|
|
mov_write_stbl_tag(pb, track);
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack* track)
|
|
{
|
|
char *str;
|
|
int pos = url_ftell(pb);
|
|
put_be32(pb, 0); /* size */
|
|
put_tag(pb, "hdlr");
|
|
put_be32(pb, 0); /* Version & flags */
|
|
put_be32(pb, 0); /* reserved */
|
|
if(track->enc->codec_type == CODEC_TYPE_VIDEO)
|
|
put_tag(pb, "vide"); /* handler type */
|
|
else
|
|
put_tag(pb, "soun"); /* handler type */
|
|
put_be32(pb ,0); /* reserved */
|
|
put_be32(pb ,0); /* reserved */
|
|
put_be32(pb ,0); /* reserved */
|
|
if(track->enc->codec_type == CODEC_TYPE_VIDEO)
|
|
str = "VideoHandler";
|
|
else
|
|
str = "SoundHandler";
|
|
put_byte(pb, strlen(str)); /* string counter */
|
|
put_buffer(pb, str, strlen(str));
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack* track)
|
|
{
|
|
put_be32(pb, 32); /* size */
|
|
put_tag(pb, "mdhd");
|
|
put_be32(pb, 0); /* Version & flags */
|
|
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) */
|
|
put_be32(pb, track->trackDuration); /* duration */
|
|
put_be16(pb, 0); /* language, 0 = english */
|
|
put_be16(pb, 0); /* reserved (quality) */
|
|
return 32;
|
|
}
|
|
|
|
static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack* track)
|
|
{
|
|
int 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 maxTrackLenTemp;
|
|
put_be32(pb, 0x5c); /* size (always 0x5c) */
|
|
put_tag(pb, "tkhd");
|
|
put_be32(pb, 0xf); /* version & flags (track enabled) */
|
|
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 */
|
|
maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)track->trackDuration)/(int64_t)track->timescale;
|
|
put_be32(pb, (long)maxTrackLenTemp); /* 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) {
|
|
put_be32(pb, track->enc->width*0x10000);
|
|
put_be32(pb, track->enc->height*0x10000);
|
|
}
|
|
else {
|
|
put_be32(pb, 0);
|
|
put_be32(pb, 0);
|
|
}
|
|
return 0x5c;
|
|
}
|
|
|
|
static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack* track)
|
|
{
|
|
int pos = url_ftell(pb);
|
|
put_be32(pb, 0); /* size */
|
|
put_tag(pb, "trak");
|
|
mov_write_tkhd_tag(pb, track);
|
|
mov_write_mdia_tag(pb, track);
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
static int mov_write_mvhd_tag(ByteIOContext *pb, MOVContext *mov)
|
|
{
|
|
int maxTrackID = 1, maxTrackLen = 0, i;
|
|
int64_t maxTrackLenTemp;
|
|
|
|
put_be32(pb, 0x6c); /* size (always 0x6c) */
|
|
put_tag(pb, "mvhd");
|
|
put_be32(pb, 0); /* version & flags */
|
|
put_be32(pb, mov->time); /* creation time */
|
|
put_be32(pb, mov->time); /* modification time */
|
|
put_be32(pb, mov->timescale); /* timescale */
|
|
for (i=0; i<MAX_STREAMS; i++) {
|
|
if(mov->tracks[i].entry > 0) {
|
|
maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)mov->tracks[i].trackDuration)/(int64_t)mov->tracks[i].timescale;
|
|
if(maxTrackLen < maxTrackLenTemp)
|
|
maxTrackLen = maxTrackLenTemp;
|
|
if(maxTrackID < mov->tracks[i].trackID)
|
|
maxTrackID = mov->tracks[i].trackID;
|
|
}
|
|
}
|
|
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_moov_tag(ByteIOContext *pb, MOVContext *mov)
|
|
{
|
|
int pos, i;
|
|
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->frame_rate;
|
|
mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_rate_base;
|
|
}
|
|
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 =
|
|
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]));
|
|
}
|
|
}
|
|
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
int mov_write_mdat_tag(ByteIOContext *pb, MOVContext* mov)
|
|
{
|
|
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 */
|
|
int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
|
|
{
|
|
put_be32(pb, 0x14 ); /* size */
|
|
put_tag(pb, "ftyp");
|
|
|
|
if (!strcmp("3gp", s->oformat->name))
|
|
put_tag(pb, "3gp4");
|
|
else
|
|
put_tag(pb, "isom");
|
|
|
|
put_be32(pb, 0x200 );
|
|
|
|
if (!strcmp("3gp", s->oformat->name))
|
|
put_tag(pb, "3gp4");
|
|
else
|
|
put_tag(pb, "mp41");
|
|
|
|
return 0x14;
|
|
}
|
|
|
|
static int mov_write_header(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = &s->pb;
|
|
|
|
if(s->oformat != NULL) {
|
|
if(!strcmp("3gp", s->oformat->name) || !strcmp("mp4", s->oformat->name))
|
|
mov_write_ftyp_tag(pb,s);
|
|
}
|
|
|
|
put_flush_packet(pb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int Timestamp() {
|
|
return 1067949799U+(24107*86400); //its the modification time of this line :)
|
|
}
|
|
|
|
static int mov_write_packet(AVFormatContext *s, int stream_index,
|
|
const uint8_t *buf, int size, int64_t pts)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
ByteIOContext *pb = &s->pb;
|
|
AVCodecContext *enc = &s->streams[stream_index]->codec;
|
|
MOVTrack* trk = &mov->tracks[stream_index];
|
|
int cl, id;
|
|
unsigned int samplesInChunk = 0;
|
|
|
|
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_VIDEO ) {
|
|
samplesInChunk = 1;
|
|
}
|
|
else if (enc->codec_type == CODEC_TYPE_AUDIO ) {
|
|
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[(buf[len] >> 3) & 0x0F];
|
|
samplesInChunk++;
|
|
}
|
|
}
|
|
else if(enc->codec_id == CODEC_ID_PCM_ALAW) {
|
|
samplesInChunk = size/enc->channels;
|
|
}
|
|
else {
|
|
samplesInChunk = 1;
|
|
}
|
|
}
|
|
|
|
if ((enc->codec_id == CODEC_ID_MPEG4 || enc->codec_id == CODEC_ID_AAC)
|
|
&& trk->vosLen == 0) {
|
|
assert(enc->extradata_size);
|
|
|
|
trk->vosLen = enc->extradata_size;
|
|
trk->vosData = av_malloc(trk->vosLen);
|
|
memcpy(trk->vosData, enc->extradata, trk->vosLen);
|
|
}
|
|
|
|
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;
|
|
}
|
|
if (mov->mdat_written == 0) {
|
|
mov_write_mdat_tag(pb, mov);
|
|
mov->mdat_written = 1;
|
|
mov->time = Timestamp();
|
|
}
|
|
|
|
trk->cluster[cl][id].pos = url_ftell(pb) - mov->movi_list;
|
|
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) {
|
|
trk->cluster[cl][id].key_frame = enc->coded_frame->key_frame;
|
|
if(enc->coded_frame->pict_type == FF_I_TYPE)
|
|
trk->hasKeyframes = 1;
|
|
}
|
|
trk->enc = enc;
|
|
trk->entry++;
|
|
trk->sampleCount += samplesInChunk;
|
|
trk->mdat_size += size;
|
|
|
|
put_buffer(pb, buf, 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, j;
|
|
offset_t file_size;
|
|
|
|
file_size = url_ftell(pb);
|
|
j = 0;
|
|
|
|
/* Write size of mdat tag */
|
|
for (i=0; i<MAX_STREAMS; i++) {
|
|
if(mov->tracks[i].ents_allocated > 0) {
|
|
j += mov->tracks[i].mdat_size;
|
|
}
|
|
}
|
|
url_fseek(pb, mov->mdat_pos, SEEK_SET);
|
|
put_be32(pb, j+8);
|
|
url_fseek(pb, file_size, SEEK_SET);
|
|
|
|
mov_write_moov_tag(pb, mov);
|
|
|
|
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_PCM_ALAW,
|
|
CODEC_ID_MPEG4,
|
|
mov_write_header,
|
|
mov_write_packet,
|
|
mov_write_trailer,
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
int movenc_init(void)
|
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{
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av_register_output_format(&mov_oformat);
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av_register_output_format(&_3gp_oformat);
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av_register_output_format(&mp4_oformat);
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return 0;
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}
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