677 lines
22 KiB
C
677 lines
22 KiB
C
/*
|
|
* AVI muxer
|
|
* Copyright (c) 2000 Fabrice Bellard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
//#define DEBUG
|
|
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "avi.h"
|
|
#include "avio_internal.h"
|
|
#include "riff.h"
|
|
#include "libavformat/avlanguage.h"
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/dict.h"
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/timestamp.h"
|
|
|
|
/*
|
|
* TODO:
|
|
* - fill all fields if non streamed (nb_frames for example)
|
|
*/
|
|
|
|
typedef struct AVIIentry {
|
|
unsigned int flags, pos, len;
|
|
} AVIIentry;
|
|
|
|
#define AVI_INDEX_CLUSTER_SIZE 16384
|
|
|
|
typedef struct AVIIndex {
|
|
int64_t indx_start;
|
|
int entry;
|
|
int ents_allocated;
|
|
AVIIentry** cluster;
|
|
} AVIIndex;
|
|
|
|
typedef struct {
|
|
int64_t riff_start, movi_list, odml_list;
|
|
int64_t frames_hdr_all;
|
|
int riff_id;
|
|
} AVIContext;
|
|
|
|
typedef struct {
|
|
int64_t frames_hdr_strm;
|
|
int64_t audio_strm_length;
|
|
int packet_count;
|
|
int entry;
|
|
|
|
AVIIndex indexes;
|
|
} AVIStream ;
|
|
|
|
static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id)
|
|
{
|
|
int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
|
|
int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
|
|
return &idx->cluster[cl][id];
|
|
}
|
|
|
|
static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb,
|
|
const char* riff_tag, const char* list_tag)
|
|
{
|
|
AVIContext *avi= s->priv_data;
|
|
int64_t loff;
|
|
int i;
|
|
|
|
avi->riff_id++;
|
|
for (i=0; i<s->nb_streams; i++){
|
|
AVIStream *avist= s->streams[i]->priv_data;
|
|
avist->indexes.entry = 0;
|
|
}
|
|
|
|
avi->riff_start = ff_start_tag(pb, "RIFF");
|
|
ffio_wfourcc(pb, riff_tag);
|
|
loff = ff_start_tag(pb, "LIST");
|
|
ffio_wfourcc(pb, list_tag);
|
|
return loff;
|
|
}
|
|
|
|
static char* avi_stream2fourcc(char* tag, int index, enum AVMediaType type)
|
|
{
|
|
tag[0] = '0' + index/10;
|
|
tag[1] = '0' + index%10;
|
|
if (type == AVMEDIA_TYPE_VIDEO) {
|
|
tag[2] = 'd';
|
|
tag[3] = 'c';
|
|
} else if (type == AVMEDIA_TYPE_SUBTITLE) {
|
|
// note: this is not an official code
|
|
tag[2] = 's';
|
|
tag[3] = 'b';
|
|
} else {
|
|
tag[2] = 'w';
|
|
tag[3] = 'b';
|
|
}
|
|
tag[4] = '\0';
|
|
return tag;
|
|
}
|
|
|
|
static int avi_write_counters(AVFormatContext* s, int riff_id)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
AVIContext *avi = s->priv_data;
|
|
int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
|
|
int64_t file_size;
|
|
AVCodecContext* stream;
|
|
|
|
file_size = avio_tell(pb);
|
|
for(n = 0; n < s->nb_streams; n++) {
|
|
AVIStream *avist= s->streams[n]->priv_data;
|
|
|
|
av_assert0(avist->frames_hdr_strm);
|
|
stream = s->streams[n]->codec;
|
|
avio_seek(pb, avist->frames_hdr_strm, SEEK_SET);
|
|
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
|
|
if(au_ssize == 0) {
|
|
avio_wl32(pb, avist->packet_count);
|
|
} else {
|
|
avio_wl32(pb, avist->audio_strm_length / au_ssize);
|
|
}
|
|
if(stream->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
nb_frames = FFMAX(nb_frames, avist->packet_count);
|
|
}
|
|
if(riff_id == 1) {
|
|
av_assert0(avi->frames_hdr_all);
|
|
avio_seek(pb, avi->frames_hdr_all, SEEK_SET);
|
|
avio_wl32(pb, nb_frames);
|
|
}
|
|
avio_seek(pb, file_size, SEEK_SET);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int avi_write_header(AVFormatContext *s)
|
|
{
|
|
AVIContext *avi = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
|
|
AVCodecContext *stream, *video_enc;
|
|
int64_t list1, list2, strh, strf;
|
|
AVDictionaryEntry *t = NULL;
|
|
|
|
if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
|
|
av_log(s, AV_LOG_ERROR, "AVI does not support >%d streams\n",
|
|
AVI_MAX_STREAM_COUNT);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
for(n=0;n<s->nb_streams;n++) {
|
|
s->streams[n]->priv_data= av_mallocz(sizeof(AVIStream));
|
|
if(!s->streams[n]->priv_data)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
/* header list */
|
|
avi->riff_id = 0;
|
|
list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl");
|
|
|
|
/* avi header */
|
|
ffio_wfourcc(pb, "avih");
|
|
avio_wl32(pb, 14 * 4);
|
|
bitrate = 0;
|
|
|
|
video_enc = NULL;
|
|
for(n=0;n<s->nb_streams;n++) {
|
|
stream = s->streams[n]->codec;
|
|
bitrate += stream->bit_rate;
|
|
if (stream->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
video_enc = stream;
|
|
}
|
|
|
|
nb_frames = 0;
|
|
|
|
if(video_enc){
|
|
avio_wl32(pb, (uint32_t)(INT64_C(1000000) * video_enc->time_base.num / video_enc->time_base.den));
|
|
} else {
|
|
avio_wl32(pb, 0);
|
|
}
|
|
avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
|
|
avio_wl32(pb, 0); /* padding */
|
|
if (!pb->seekable)
|
|
avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
|
|
else
|
|
avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
|
|
avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
|
|
avio_wl32(pb, nb_frames); /* nb frames, filled later */
|
|
avio_wl32(pb, 0); /* initial frame */
|
|
avio_wl32(pb, s->nb_streams); /* nb streams */
|
|
avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
|
|
if(video_enc){
|
|
avio_wl32(pb, video_enc->width);
|
|
avio_wl32(pb, video_enc->height);
|
|
} else {
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
}
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
|
|
/* stream list */
|
|
for(i=0;i<n;i++) {
|
|
AVIStream *avist= s->streams[i]->priv_data;
|
|
list2 = ff_start_tag(pb, "LIST");
|
|
ffio_wfourcc(pb, "strl");
|
|
|
|
stream = s->streams[i]->codec;
|
|
|
|
/* stream generic header */
|
|
strh = ff_start_tag(pb, "strh");
|
|
switch(stream->codec_type) {
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
// XSUB subtitles behave like video tracks, other subtitles
|
|
// are not (yet) supported.
|
|
if (stream->codec_id != AV_CODEC_ID_XSUB) {
|
|
av_log(s, AV_LOG_ERROR, "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
case AVMEDIA_TYPE_VIDEO: ffio_wfourcc(pb, "vids"); break;
|
|
case AVMEDIA_TYPE_AUDIO: ffio_wfourcc(pb, "auds"); break;
|
|
// case AVMEDIA_TYPE_TEXT : ffio_wfourcc(pb, "txts"); break;
|
|
case AVMEDIA_TYPE_DATA : ffio_wfourcc(pb, "dats"); break;
|
|
}
|
|
if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
stream->codec_id == AV_CODEC_ID_XSUB)
|
|
avio_wl32(pb, stream->codec_tag);
|
|
else
|
|
avio_wl32(pb, 1);
|
|
avio_wl32(pb, 0); /* flags */
|
|
avio_wl16(pb, 0); /* priority */
|
|
avio_wl16(pb, 0); /* language */
|
|
avio_wl32(pb, 0); /* initial frame */
|
|
|
|
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
|
|
|
|
if ( stream->codec_type == AVMEDIA_TYPE_VIDEO
|
|
&& stream->codec_id != AV_CODEC_ID_XSUB
|
|
&& au_byterate > 1000LL*au_scale) {
|
|
au_byterate = 600;
|
|
au_scale = 1;
|
|
}
|
|
avpriv_set_pts_info(s->streams[i], 64, au_scale, au_byterate);
|
|
if(stream->codec_id == AV_CODEC_ID_XSUB)
|
|
au_scale = au_byterate = 0;
|
|
|
|
avio_wl32(pb, au_scale); /* scale */
|
|
avio_wl32(pb, au_byterate); /* rate */
|
|
|
|
avio_wl32(pb, 0); /* start */
|
|
avist->frames_hdr_strm = avio_tell(pb); /* remember this offset to fill later */
|
|
if (!pb->seekable)
|
|
avio_wl32(pb, AVI_MAX_RIFF_SIZE); /* FIXME: this may be broken, but who cares */
|
|
else
|
|
avio_wl32(pb, 0); /* length, XXX: filled later */
|
|
|
|
/* suggested buffer size */ //FIXME set at the end to largest chunk
|
|
if(stream->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
avio_wl32(pb, 1024 * 1024);
|
|
else if(stream->codec_type == AVMEDIA_TYPE_AUDIO)
|
|
avio_wl32(pb, 12 * 1024);
|
|
else
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, -1); /* quality */
|
|
avio_wl32(pb, au_ssize); /* sample size */
|
|
avio_wl32(pb, 0);
|
|
avio_wl16(pb, stream->width);
|
|
avio_wl16(pb, stream->height);
|
|
ff_end_tag(pb, strh);
|
|
|
|
if(stream->codec_type != AVMEDIA_TYPE_DATA){
|
|
int ret;
|
|
|
|
strf = ff_start_tag(pb, "strf");
|
|
switch(stream->codec_type) {
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
// XSUB subtitles behave like video tracks, other subtitles
|
|
// are not (yet) supported.
|
|
if (stream->codec_id != AV_CODEC_ID_XSUB) break;
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
ff_put_bmp_header(pb, stream, ff_codec_bmp_tags, 0, 0);
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if ((ret = ff_put_wav_header(pb, stream)) < 0) {
|
|
return ret;
|
|
}
|
|
break;
|
|
default:
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Invalid or not supported codec type '%s' found in the input\n",
|
|
(char *)av_x_if_null(av_get_media_type_string(stream->codec_type), "?"));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
ff_end_tag(pb, strf);
|
|
if ((t = av_dict_get(s->streams[i]->metadata, "title", NULL, 0))) {
|
|
ff_riff_write_info_tag(s->pb, "strn", t->value);
|
|
t = NULL;
|
|
}
|
|
if(stream->codec_id == AV_CODEC_ID_XSUB
|
|
&& (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
|
|
const char* langstr = av_convert_lang_to(t->value, AV_LANG_ISO639_1);
|
|
t = NULL;
|
|
if (langstr) {
|
|
char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
|
|
ff_riff_write_info_tag(s->pb, "strn", str);
|
|
av_free(str);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pb->seekable) {
|
|
unsigned char tag[5];
|
|
int j;
|
|
|
|
/* Starting to lay out AVI OpenDML master index.
|
|
* We want to make it JUNK entry for now, since we'd
|
|
* like to get away without making AVI an OpenDML one
|
|
* for compatibility reasons.
|
|
*/
|
|
avist->indexes.entry = avist->indexes.ents_allocated = 0;
|
|
avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
|
|
avio_wl16(pb, 4); /* wLongsPerEntry */
|
|
avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
|
|
avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
|
|
avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */
|
|
ffio_wfourcc(pb, avi_stream2fourcc(tag, i, stream->codec_type));
|
|
/* dwChunkId */
|
|
avio_wl64(pb, 0); /* dwReserved[3]
|
|
avio_wl32(pb, 0); Must be 0. */
|
|
for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
|
|
avio_wl64(pb, 0);
|
|
ff_end_tag(pb, avist->indexes.indx_start);
|
|
}
|
|
|
|
if( stream->codec_type == AVMEDIA_TYPE_VIDEO
|
|
&& s->streams[i]->sample_aspect_ratio.num>0
|
|
&& s->streams[i]->sample_aspect_ratio.den>0){
|
|
int vprp= ff_start_tag(pb, "vprp");
|
|
AVRational dar = av_mul_q(s->streams[i]->sample_aspect_ratio,
|
|
(AVRational){stream->width, stream->height});
|
|
int num, den;
|
|
av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
|
|
|
|
avio_wl32(pb, 0); //video format = unknown
|
|
avio_wl32(pb, 0); //video standard= unknown
|
|
avio_wl32(pb, lrintf(1.0/av_q2d(stream->time_base)));
|
|
avio_wl32(pb, stream->width );
|
|
avio_wl32(pb, stream->height);
|
|
avio_wl16(pb, den);
|
|
avio_wl16(pb, num);
|
|
avio_wl32(pb, stream->width );
|
|
avio_wl32(pb, stream->height);
|
|
avio_wl32(pb, 1); //progressive FIXME
|
|
|
|
avio_wl32(pb, stream->height);
|
|
avio_wl32(pb, stream->width );
|
|
avio_wl32(pb, stream->height);
|
|
avio_wl32(pb, stream->width );
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
ff_end_tag(pb, vprp);
|
|
}
|
|
|
|
ff_end_tag(pb, list2);
|
|
}
|
|
|
|
if (pb->seekable) {
|
|
/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
|
|
avi->odml_list = ff_start_tag(pb, "JUNK");
|
|
ffio_wfourcc(pb, "odml");
|
|
ffio_wfourcc(pb, "dmlh");
|
|
avio_wl32(pb, 248);
|
|
for (i = 0; i < 248; i+= 4)
|
|
avio_wl32(pb, 0);
|
|
ff_end_tag(pb, avi->odml_list);
|
|
}
|
|
|
|
ff_end_tag(pb, list1);
|
|
|
|
ff_riff_write_info(s);
|
|
|
|
/* some padding for easier tag editing */
|
|
list2 = ff_start_tag(pb, "JUNK");
|
|
for (i = 0; i < 1016; i += 4)
|
|
avio_wl32(pb, 0);
|
|
ff_end_tag(pb, list2);
|
|
|
|
avi->movi_list = ff_start_tag(pb, "LIST");
|
|
ffio_wfourcc(pb, "movi");
|
|
|
|
avio_flush(pb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int avi_write_ix(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
AVIContext *avi = s->priv_data;
|
|
char tag[5];
|
|
char ix_tag[] = "ix00";
|
|
int i, j;
|
|
|
|
av_assert0(pb->seekable);
|
|
|
|
if (avi->riff_id > AVI_MASTER_INDEX_SIZE) {
|
|
av_log(s, AV_LOG_ERROR, "Invalid riff index %d > %d\n",
|
|
avi->riff_id, AVI_MASTER_INDEX_SIZE);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
for (i=0;i<s->nb_streams;i++) {
|
|
AVIStream *avist= s->streams[i]->priv_data;
|
|
int64_t ix, pos;
|
|
|
|
avi_stream2fourcc(tag, i, s->streams[i]->codec->codec_type);
|
|
ix_tag[3] = '0' + i;
|
|
|
|
/* Writing AVI OpenDML leaf index chunk */
|
|
ix = avio_tell(pb);
|
|
ffio_wfourcc(pb, ix_tag); /* ix?? */
|
|
avio_wl32(pb, avist->indexes.entry * 8 + 24);
|
|
/* chunk size */
|
|
avio_wl16(pb, 2); /* wLongsPerEntry */
|
|
avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
|
|
avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
|
|
avio_wl32(pb, avist->indexes.entry);
|
|
/* nEntriesInUse */
|
|
ffio_wfourcc(pb, tag); /* dwChunkId */
|
|
avio_wl64(pb, avi->movi_list);/* qwBaseOffset */
|
|
avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */
|
|
|
|
for (j=0; j<avist->indexes.entry; j++) {
|
|
AVIIentry* ie = avi_get_ientry(&avist->indexes, j);
|
|
avio_wl32(pb, ie->pos + 8);
|
|
avio_wl32(pb, ((uint32_t)ie->len & ~0x80000000) |
|
|
(ie->flags & 0x10 ? 0 : 0x80000000));
|
|
}
|
|
avio_flush(pb);
|
|
pos = avio_tell(pb);
|
|
|
|
/* Updating one entry in the AVI OpenDML master index */
|
|
avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
|
|
ffio_wfourcc(pb, "indx"); /* enabling this entry */
|
|
avio_skip(pb, 8);
|
|
avio_wl32(pb, avi->riff_id); /* nEntriesInUse */
|
|
avio_skip(pb, 16*avi->riff_id);
|
|
avio_wl64(pb, ix); /* qwOffset */
|
|
avio_wl32(pb, pos - ix); /* dwSize */
|
|
avio_wl32(pb, avist->indexes.entry); /* dwDuration */
|
|
|
|
avio_seek(pb, pos, SEEK_SET);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int avi_write_idx1(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
AVIContext *avi = s->priv_data;
|
|
int64_t idx_chunk;
|
|
int i;
|
|
char tag[5];
|
|
|
|
if (pb->seekable) {
|
|
AVIStream *avist;
|
|
AVIIentry* ie = 0, *tie;
|
|
int empty, stream_id = -1;
|
|
|
|
idx_chunk = ff_start_tag(pb, "idx1");
|
|
for(i=0; i<s->nb_streams; i++){
|
|
avist= s->streams[i]->priv_data;
|
|
avist->entry=0;
|
|
}
|
|
|
|
do {
|
|
empty = 1;
|
|
for (i=0; i<s->nb_streams; i++) {
|
|
avist= s->streams[i]->priv_data;
|
|
if (avist->indexes.entry <= avist->entry)
|
|
continue;
|
|
|
|
tie = avi_get_ientry(&avist->indexes, avist->entry);
|
|
if (empty || tie->pos < ie->pos) {
|
|
ie = tie;
|
|
stream_id = i;
|
|
}
|
|
empty = 0;
|
|
}
|
|
if (!empty) {
|
|
avist= s->streams[stream_id]->priv_data;
|
|
avi_stream2fourcc(tag, stream_id,
|
|
s->streams[stream_id]->codec->codec_type);
|
|
ffio_wfourcc(pb, tag);
|
|
avio_wl32(pb, ie->flags);
|
|
avio_wl32(pb, ie->pos);
|
|
avio_wl32(pb, ie->len);
|
|
avist->entry++;
|
|
}
|
|
} while (!empty);
|
|
ff_end_tag(pb, idx_chunk);
|
|
|
|
avi_write_counters(s, avi->riff_id);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
AVIContext *avi = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
unsigned char tag[5];
|
|
unsigned int flags=0;
|
|
const int stream_index= pkt->stream_index;
|
|
AVIStream *avist= s->streams[stream_index]->priv_data;
|
|
AVCodecContext *enc= s->streams[stream_index]->codec;
|
|
int size= pkt->size;
|
|
|
|
av_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(pkt->dts), avist->packet_count, stream_index);
|
|
while(enc->block_align==0 && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avist->packet_count && enc->codec_id != AV_CODEC_ID_XSUB && avist->packet_count){
|
|
AVPacket empty_packet;
|
|
|
|
if(pkt->dts - avist->packet_count > 60000){
|
|
av_log(s, AV_LOG_ERROR, "Too large number of skipped frames %"PRId64" > 60000\n", pkt->dts - avist->packet_count);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
av_init_packet(&empty_packet);
|
|
empty_packet.size= 0;
|
|
empty_packet.data= NULL;
|
|
empty_packet.stream_index= stream_index;
|
|
avi_write_packet(s, &empty_packet);
|
|
av_dlog(s, "dup dts:%s packet_count:%d\n", av_ts2str(pkt->dts), avist->packet_count);
|
|
}
|
|
avist->packet_count++;
|
|
|
|
// Make sure to put an OpenDML chunk when the file size exceeds the limits
|
|
if (pb->seekable &&
|
|
(avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) {
|
|
|
|
avi_write_ix(s);
|
|
ff_end_tag(pb, avi->movi_list);
|
|
|
|
if (avi->riff_id == 1)
|
|
avi_write_idx1(s);
|
|
|
|
ff_end_tag(pb, avi->riff_start);
|
|
avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi");
|
|
}
|
|
|
|
avi_stream2fourcc(tag, stream_index, enc->codec_type);
|
|
if(pkt->flags&AV_PKT_FLAG_KEY)
|
|
flags = 0x10;
|
|
if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
avist->audio_strm_length += size;
|
|
}
|
|
|
|
if (s->pb->seekable) {
|
|
AVIIndex* idx = &avist->indexes;
|
|
int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
|
|
int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
|
|
if (idx->ents_allocated <= idx->entry) {
|
|
idx->cluster = av_realloc_f(idx->cluster, sizeof(void*), cl+1);
|
|
if (!idx->cluster) {
|
|
idx->ents_allocated = 0;
|
|
idx->entry = 0;
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
|
|
if (!idx->cluster[cl])
|
|
return AVERROR(ENOMEM);
|
|
idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
|
|
}
|
|
|
|
idx->cluster[cl][id].flags = flags;
|
|
idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list;
|
|
idx->cluster[cl][id].len = size;
|
|
idx->entry++;
|
|
}
|
|
|
|
avio_write(pb, tag, 4);
|
|
avio_wl32(pb, size);
|
|
avio_write(pb, pkt->data, size);
|
|
if (size & 1)
|
|
avio_w8(pb, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int avi_write_trailer(AVFormatContext *s)
|
|
{
|
|
AVIContext *avi = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int res = 0;
|
|
int i, j, n, nb_frames;
|
|
int64_t file_size;
|
|
|
|
if (pb->seekable){
|
|
if (avi->riff_id == 1) {
|
|
ff_end_tag(pb, avi->movi_list);
|
|
res = avi_write_idx1(s);
|
|
ff_end_tag(pb, avi->riff_start);
|
|
} else {
|
|
avi_write_ix(s);
|
|
ff_end_tag(pb, avi->movi_list);
|
|
ff_end_tag(pb, avi->riff_start);
|
|
|
|
file_size = avio_tell(pb);
|
|
avio_seek(pb, avi->odml_list - 8, SEEK_SET);
|
|
ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */
|
|
avio_skip(pb, 16);
|
|
|
|
for (n=nb_frames=0;n<s->nb_streams;n++) {
|
|
AVCodecContext *stream = s->streams[n]->codec;
|
|
AVIStream *avist= s->streams[n]->priv_data;
|
|
|
|
if (stream->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (nb_frames < avist->packet_count)
|
|
nb_frames = avist->packet_count;
|
|
} else {
|
|
if (stream->codec_id == AV_CODEC_ID_MP2 || stream->codec_id == AV_CODEC_ID_MP3) {
|
|
nb_frames += avist->packet_count;
|
|
}
|
|
}
|
|
}
|
|
avio_wl32(pb, nb_frames);
|
|
avio_seek(pb, file_size, SEEK_SET);
|
|
|
|
avi_write_counters(s, avi->riff_id);
|
|
}
|
|
}
|
|
|
|
for (i=0; i<s->nb_streams; i++) {
|
|
AVIStream *avist= s->streams[i]->priv_data;
|
|
for (j=0; j<avist->indexes.ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
|
|
av_freep(&avist->indexes.cluster[j]);
|
|
av_freep(&avist->indexes.cluster);
|
|
avist->indexes.ents_allocated = avist->indexes.entry = 0;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
AVOutputFormat ff_avi_muxer = {
|
|
.name = "avi",
|
|
.long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
|
|
.mime_type = "video/x-msvideo",
|
|
.extensions = "avi",
|
|
.priv_data_size = sizeof(AVIContext),
|
|
.audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
|
|
.video_codec = AV_CODEC_ID_MPEG4,
|
|
.write_header = avi_write_header,
|
|
.write_packet = avi_write_packet,
|
|
.write_trailer = avi_write_trailer,
|
|
.codec_tag = (const AVCodecTag* const []){
|
|
ff_codec_bmp_tags, ff_codec_wav_tags, 0
|
|
},
|
|
};
|