ffmpeg / libavformat / avienc.c @ 4efd5cf3
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/*
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* AVI muxer
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* Copyright (c) 2000 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avformat.h" |
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#include "avi.h" |
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#include "riff.h" |
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#include "libavutil/intreadwrite.h" |
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/*
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* TODO:
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* - fill all fields if non streamed (nb_frames for example)
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*/
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typedef struct AVIIentry { |
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unsigned int flags, pos, len; |
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} AVIIentry; |
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#define AVI_INDEX_CLUSTER_SIZE 16384 |
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typedef struct AVIIndex { |
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int64_t indx_start; |
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int entry;
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int ents_allocated;
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AVIIentry** cluster; |
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} AVIIndex; |
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typedef struct { |
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int64_t riff_start, movi_list, odml_list; |
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int64_t frames_hdr_all; |
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int riff_id;
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} AVIContext; |
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typedef struct { |
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int64_t frames_hdr_strm; |
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int audio_strm_length;
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int packet_count;
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int entry;
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AVIIndex indexes; |
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} AVIStream ; |
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static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id) |
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{ |
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int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
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int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
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return &idx->cluster[cl][id];
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} |
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static int64_t avi_start_new_riff(AVFormatContext *s, ByteIOContext *pb,
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const char* riff_tag, const char* list_tag) |
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{ |
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AVIContext *avi= s->priv_data; |
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int64_t loff; |
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int i;
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avi->riff_id++; |
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for (i=0; i<s->nb_streams; i++){ |
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AVIStream *avist= s->streams[i]->priv_data; |
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avist->indexes.entry = 0;
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} |
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avi->riff_start = ff_start_tag(pb, "RIFF");
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put_tag(pb, riff_tag); |
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loff = ff_start_tag(pb, "LIST");
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put_tag(pb, list_tag); |
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return loff;
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} |
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static char* avi_stream2fourcc(char* tag, int index, enum AVMediaType type) |
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{ |
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tag[0] = '0'; |
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tag[1] = '0' + index; |
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if (type == AVMEDIA_TYPE_VIDEO) {
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tag[2] = 'd'; |
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tag[3] = 'c'; |
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} else if (type == AVMEDIA_TYPE_SUBTITLE) { |
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// note: this is not an official code
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tag[2] = 's'; |
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tag[3] = 'b'; |
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} else {
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tag[2] = 'w'; |
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tag[3] = 'b'; |
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} |
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tag[4] = '\0'; |
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return tag;
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} |
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static void avi_write_info_tag(ByteIOContext *pb, const char *tag, const char *str) |
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{ |
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int len = strlen(str);
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if (len > 0) { |
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len++; |
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put_tag(pb, tag); |
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put_le32(pb, len); |
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avio_put_str(pb, str); |
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if (len & 1) |
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put_byte(pb, 0);
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} |
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} |
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static int avi_write_counters(AVFormatContext* s, int riff_id) |
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{ |
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ByteIOContext *pb = s->pb; |
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AVIContext *avi = s->priv_data; |
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int n, au_byterate, au_ssize, au_scale, nb_frames = 0; |
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int64_t file_size; |
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AVCodecContext* stream; |
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file_size = url_ftell(pb); |
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for(n = 0; n < s->nb_streams; n++) { |
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AVIStream *avist= s->streams[n]->priv_data; |
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assert(avist->frames_hdr_strm); |
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stream = s->streams[n]->codec; |
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url_fseek(pb, avist->frames_hdr_strm, SEEK_SET); |
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ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale); |
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if(au_ssize == 0) { |
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put_le32(pb, avist->packet_count); |
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} else {
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put_le32(pb, avist->audio_strm_length / au_ssize); |
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} |
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if(stream->codec_type == AVMEDIA_TYPE_VIDEO)
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nb_frames = FFMAX(nb_frames, avist->packet_count); |
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} |
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if(riff_id == 1) { |
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assert(avi->frames_hdr_all); |
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url_fseek(pb, avi->frames_hdr_all, SEEK_SET); |
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put_le32(pb, nb_frames); |
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} |
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url_fseek(pb, file_size, SEEK_SET); |
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return 0; |
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} |
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static int avi_write_header(AVFormatContext *s) |
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{ |
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AVIContext *avi = s->priv_data; |
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ByteIOContext *pb = s->pb; |
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int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
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AVCodecContext *stream, *video_enc; |
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int64_t list1, list2, strh, strf; |
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AVMetadataTag *t = NULL;
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for(n=0;n<s->nb_streams;n++) { |
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s->streams[n]->priv_data= av_mallocz(sizeof(AVIStream));
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if(!s->streams[n]->priv_data)
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return AVERROR(ENOMEM);
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} |
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/* header list */
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avi->riff_id = 0;
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list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl"); |
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/* avi header */
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put_tag(pb, "avih");
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put_le32(pb, 14 * 4); |
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bitrate = 0;
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video_enc = NULL;
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for(n=0;n<s->nb_streams;n++) { |
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stream = s->streams[n]->codec; |
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bitrate += stream->bit_rate; |
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if (stream->codec_type == AVMEDIA_TYPE_VIDEO)
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video_enc = stream; |
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} |
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nb_frames = 0;
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if(video_enc){
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put_le32(pb, (uint32_t)(INT64_C(1000000) * video_enc->time_base.num / video_enc->time_base.den));
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} else {
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put_le32(pb, 0);
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} |
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put_le32(pb, bitrate / 8); /* XXX: not quite exact */ |
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put_le32(pb, 0); /* padding */ |
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if (url_is_streamed(pb))
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put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
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else
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put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
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avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
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put_le32(pb, nb_frames); /* nb frames, filled later */
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put_le32(pb, 0); /* initial frame */ |
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put_le32(pb, s->nb_streams); /* nb streams */
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put_le32(pb, 1024 * 1024); /* suggested buffer size */ |
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if(video_enc){
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put_le32(pb, video_enc->width); |
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put_le32(pb, video_enc->height); |
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} else {
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put_le32(pb, 0);
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put_le32(pb, 0);
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} |
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put_le32(pb, 0); /* reserved */ |
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put_le32(pb, 0); /* reserved */ |
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put_le32(pb, 0); /* reserved */ |
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put_le32(pb, 0); /* reserved */ |
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/* stream list */
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for(i=0;i<n;i++) { |
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AVIStream *avist= s->streams[i]->priv_data; |
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list2 = ff_start_tag(pb, "LIST");
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put_tag(pb, "strl");
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stream = s->streams[i]->codec; |
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/* stream generic header */
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strh = ff_start_tag(pb, "strh");
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switch(stream->codec_type) {
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case AVMEDIA_TYPE_SUBTITLE:
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// XSUB subtitles behave like video tracks, other subtitles
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// are not (yet) supported.
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if (stream->codec_id != CODEC_ID_XSUB) {
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av_log(s, AV_LOG_ERROR, "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n");
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return AVERROR_PATCHWELCOME;
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} |
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case AVMEDIA_TYPE_VIDEO: put_tag(pb, "vids"); break; |
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case AVMEDIA_TYPE_AUDIO: put_tag(pb, "auds"); break; |
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// case AVMEDIA_TYPE_TEXT : put_tag(pb, "txts"); break;
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case AVMEDIA_TYPE_DATA : put_tag(pb, "dats"); break; |
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} |
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if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
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stream->codec_id == CODEC_ID_XSUB) |
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put_le32(pb, stream->codec_tag); |
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else
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put_le32(pb, 1);
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put_le32(pb, 0); /* flags */ |
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put_le16(pb, 0); /* priority */ |
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put_le16(pb, 0); /* language */ |
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put_le32(pb, 0); /* initial frame */ |
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ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale); |
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put_le32(pb, au_scale); /* scale */
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put_le32(pb, au_byterate); /* rate */
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av_set_pts_info(s->streams[i], 64, au_scale, au_byterate);
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put_le32(pb, 0); /* start */ |
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avist->frames_hdr_strm = url_ftell(pb); /* remember this offset to fill later */
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if (url_is_streamed(pb))
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put_le32(pb, AVI_MAX_RIFF_SIZE); /* FIXME: this may be broken, but who cares */
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else
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put_le32(pb, 0); /* length, XXX: filled later */ |
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/* suggested buffer size */ //FIXME set at the end to largest chunk |
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if(stream->codec_type == AVMEDIA_TYPE_VIDEO)
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put_le32(pb, 1024 * 1024); |
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else if(stream->codec_type == AVMEDIA_TYPE_AUDIO) |
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put_le32(pb, 12 * 1024); |
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else
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put_le32(pb, 0);
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put_le32(pb, -1); /* quality */ |
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put_le32(pb, au_ssize); /* sample size */
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put_le32(pb, 0);
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put_le16(pb, stream->width); |
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put_le16(pb, stream->height); |
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ff_end_tag(pb, strh); |
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if(stream->codec_type != AVMEDIA_TYPE_DATA){
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strf = ff_start_tag(pb, "strf");
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switch(stream->codec_type) {
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case AVMEDIA_TYPE_SUBTITLE:
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// XSUB subtitles behave like video tracks, other subtitles
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// are not (yet) supported.
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if (stream->codec_id != CODEC_ID_XSUB) break; |
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case AVMEDIA_TYPE_VIDEO:
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ff_put_bmp_header(pb, stream, ff_codec_bmp_tags, 0);
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break;
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case AVMEDIA_TYPE_AUDIO:
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if (ff_put_wav_header(pb, stream) < 0) { |
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return -1; |
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} |
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break;
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default:
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return -1; |
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} |
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ff_end_tag(pb, strf); |
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if ((t = av_metadata_get(s->streams[i]->metadata, "title", NULL, 0))) { |
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avi_write_info_tag(s->pb, "strn", t->value);
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t = NULL;
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} |
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} |
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if (!url_is_streamed(pb)) {
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unsigned char tag[5]; |
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int j;
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/* Starting to lay out AVI OpenDML master index.
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* We want to make it JUNK entry for now, since we'd
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* like to get away without making AVI an OpenDML one
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* for compatibility reasons.
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*/
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avist->indexes.entry = avist->indexes.ents_allocated = 0;
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avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
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put_le16(pb, 4); /* wLongsPerEntry */ |
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put_byte(pb, 0); /* bIndexSubType (0 == frame index) */ |
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put_byte(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */ |
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put_le32(pb, 0); /* nEntriesInUse (will fill out later on) */ |
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put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
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/* dwChunkId */
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put_le64(pb, 0); /* dwReserved[3] |
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put_le32(pb, 0); Must be 0. */
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for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++) |
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put_le64(pb, 0);
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ff_end_tag(pb, avist->indexes.indx_start); |
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} |
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if( stream->codec_type == AVMEDIA_TYPE_VIDEO
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&& s->streams[i]->sample_aspect_ratio.num>0
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&& s->streams[i]->sample_aspect_ratio.den>0){
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int vprp= ff_start_tag(pb, "vprp"); |
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AVRational dar = av_mul_q(s->streams[i]->sample_aspect_ratio, |
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(AVRational){stream->width, stream->height}); |
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int num, den;
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av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
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put_le32(pb, 0); //video format = unknown |
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put_le32(pb, 0); //video standard= unknown |
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put_le32(pb, lrintf(1.0/av_q2d(stream->time_base))); |
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put_le32(pb, stream->width ); |
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put_le32(pb, stream->height); |
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put_le16(pb, den); |
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put_le16(pb, num); |
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put_le32(pb, stream->width ); |
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put_le32(pb, stream->height); |
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put_le32(pb, 1); //progressive FIXME |
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put_le32(pb, stream->height); |
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put_le32(pb, stream->width ); |
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put_le32(pb, stream->height); |
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put_le32(pb, stream->width ); |
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put_le32(pb, 0);
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put_le32(pb, 0);
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put_le32(pb, 0);
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put_le32(pb, 0);
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ff_end_tag(pb, vprp); |
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} |
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ff_end_tag(pb, list2); |
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} |
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if (!url_is_streamed(pb)) {
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/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
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avi->odml_list = ff_start_tag(pb, "JUNK");
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put_tag(pb, "odml");
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put_tag(pb, "dmlh");
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put_le32(pb, 248);
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for (i = 0; i < 248; i+= 4) |
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put_le32(pb, 0);
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ff_end_tag(pb, avi->odml_list); |
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} |
368 |
|
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ff_end_tag(pb, list1); |
370 |
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list2 = ff_start_tag(pb, "LIST");
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put_tag(pb, "INFO");
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ff_metadata_conv(&s->metadata, ff_avi_metadata_conv, NULL);
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for (i = 0; *ff_avi_tags[i]; i++) { |
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if ((t = av_metadata_get(s->metadata, ff_avi_tags[i], NULL, AV_METADATA_MATCH_CASE))) |
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avi_write_info_tag(s->pb, t->key, t->value); |
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} |
378 |
ff_end_tag(pb, list2); |
379 |
|
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/* some padding for easier tag editing */
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list2 = ff_start_tag(pb, "JUNK");
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for (i = 0; i < 1016; i += 4) |
383 |
put_le32(pb, 0);
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ff_end_tag(pb, list2); |
385 |
|
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avi->movi_list = ff_start_tag(pb, "LIST");
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put_tag(pb, "movi");
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|
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put_flush_packet(pb); |
390 |
|
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return 0; |
392 |
} |
393 |
|
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static int avi_write_ix(AVFormatContext *s) |
395 |
{ |
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ByteIOContext *pb = s->pb; |
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AVIContext *avi = s->priv_data; |
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char tag[5]; |
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char ix_tag[] = "ix00"; |
400 |
int i, j;
|
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|
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assert(!url_is_streamed(pb)); |
403 |
|
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if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
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return -1; |
406 |
|
407 |
for (i=0;i<s->nb_streams;i++) { |
408 |
AVIStream *avist= s->streams[i]->priv_data; |
409 |
int64_t ix, pos; |
410 |
|
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avi_stream2fourcc(&tag[0], i, s->streams[i]->codec->codec_type);
|
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ix_tag[3] = '0' + i; |
413 |
|
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/* Writing AVI OpenDML leaf index chunk */
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ix = url_ftell(pb); |
416 |
put_tag(pb, &ix_tag[0]); /* ix?? */ |
417 |
put_le32(pb, avist->indexes.entry * 8 + 24); |
418 |
/* chunk size */
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put_le16(pb, 2); /* wLongsPerEntry */ |
420 |
put_byte(pb, 0); /* bIndexSubType (0 == frame index) */ |
421 |
put_byte(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */ |
422 |
put_le32(pb, avist->indexes.entry); |
423 |
/* nEntriesInUse */
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put_tag(pb, &tag[0]); /* dwChunkId */ |
425 |
put_le64(pb, avi->movi_list);/* qwBaseOffset */
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put_le32(pb, 0); /* dwReserved_3 (must be 0) */ |
427 |
|
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for (j=0; j<avist->indexes.entry; j++) { |
429 |
AVIIentry* ie = avi_get_ientry(&avist->indexes, j); |
430 |
put_le32(pb, ie->pos + 8);
|
431 |
put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
|
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(ie->flags & 0x10 ? 0 : 0x80000000)); |
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} |
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put_flush_packet(pb); |
435 |
pos = url_ftell(pb); |
436 |
|
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/* Updating one entry in the AVI OpenDML master index */
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url_fseek(pb, avist->indexes.indx_start - 8, SEEK_SET);
|
439 |
put_tag(pb, "indx"); /* enabling this entry */ |
440 |
url_fskip(pb, 8);
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put_le32(pb, avi->riff_id); /* nEntriesInUse */
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url_fskip(pb, 16*avi->riff_id);
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put_le64(pb, ix); /* qwOffset */
|
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put_le32(pb, pos - ix); /* dwSize */
|
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put_le32(pb, avist->indexes.entry); /* dwDuration */
|
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|
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url_fseek(pb, pos, SEEK_SET); |
448 |
} |
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return 0; |
450 |
} |
451 |
|
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static int avi_write_idx1(AVFormatContext *s) |
453 |
{ |
454 |
ByteIOContext *pb = s->pb; |
455 |
AVIContext *avi = s->priv_data; |
456 |
int64_t idx_chunk; |
457 |
int i;
|
458 |
char tag[5]; |
459 |
|
460 |
if (!url_is_streamed(pb)) {
|
461 |
AVIStream *avist; |
462 |
AVIIentry* ie = 0, *tie;
|
463 |
int empty, stream_id = -1; |
464 |
|
465 |
idx_chunk = ff_start_tag(pb, "idx1");
|
466 |
for(i=0; i<s->nb_streams; i++){ |
467 |
avist= s->streams[i]->priv_data; |
468 |
avist->entry=0;
|
469 |
} |
470 |
|
471 |
do {
|
472 |
empty = 1;
|
473 |
for (i=0; i<s->nb_streams; i++) { |
474 |
avist= s->streams[i]->priv_data; |
475 |
if (avist->indexes.entry <= avist->entry)
|
476 |
continue;
|
477 |
|
478 |
tie = avi_get_ientry(&avist->indexes, avist->entry); |
479 |
if (empty || tie->pos < ie->pos) {
|
480 |
ie = tie; |
481 |
stream_id = i; |
482 |
} |
483 |
empty = 0;
|
484 |
} |
485 |
if (!empty) {
|
486 |
avist= s->streams[stream_id]->priv_data; |
487 |
avi_stream2fourcc(&tag[0], stream_id,
|
488 |
s->streams[stream_id]->codec->codec_type); |
489 |
put_tag(pb, &tag[0]);
|
490 |
put_le32(pb, ie->flags); |
491 |
put_le32(pb, ie->pos); |
492 |
put_le32(pb, ie->len); |
493 |
avist->entry++; |
494 |
} |
495 |
} while (!empty);
|
496 |
ff_end_tag(pb, idx_chunk); |
497 |
|
498 |
avi_write_counters(s, avi->riff_id); |
499 |
} |
500 |
return 0; |
501 |
} |
502 |
|
503 |
static int avi_write_packet(AVFormatContext *s, AVPacket *pkt) |
504 |
{ |
505 |
AVIContext *avi = s->priv_data; |
506 |
ByteIOContext *pb = s->pb; |
507 |
unsigned char tag[5]; |
508 |
unsigned int flags=0; |
509 |
const int stream_index= pkt->stream_index; |
510 |
AVIStream *avist= s->streams[stream_index]->priv_data; |
511 |
AVCodecContext *enc= s->streams[stream_index]->codec; |
512 |
int size= pkt->size;
|
513 |
|
514 |
// av_log(s, AV_LOG_DEBUG, "%"PRId64" %d %d\n", pkt->dts, avi->packet_count[stream_index], stream_index);
|
515 |
while(enc->block_align==0 && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avist->packet_count){ |
516 |
AVPacket empty_packet; |
517 |
|
518 |
av_init_packet(&empty_packet); |
519 |
empty_packet.size= 0;
|
520 |
empty_packet.data= NULL;
|
521 |
empty_packet.stream_index= stream_index; |
522 |
avi_write_packet(s, &empty_packet); |
523 |
// av_log(s, AV_LOG_DEBUG, "dup %"PRId64" %d\n", pkt->dts, avi->packet_count[stream_index]);
|
524 |
} |
525 |
avist->packet_count++; |
526 |
|
527 |
// Make sure to put an OpenDML chunk when the file size exceeds the limits
|
528 |
if (!url_is_streamed(pb) &&
|
529 |
(url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) { |
530 |
|
531 |
avi_write_ix(s); |
532 |
ff_end_tag(pb, avi->movi_list); |
533 |
|
534 |
if (avi->riff_id == 1) |
535 |
avi_write_idx1(s); |
536 |
|
537 |
ff_end_tag(pb, avi->riff_start); |
538 |
avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi"); |
539 |
} |
540 |
|
541 |
avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
|
542 |
if(pkt->flags&AV_PKT_FLAG_KEY)
|
543 |
flags = 0x10;
|
544 |
if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
|
545 |
avist->audio_strm_length += size; |
546 |
} |
547 |
|
548 |
if (!url_is_streamed(s->pb)) {
|
549 |
AVIIndex* idx = &avist->indexes; |
550 |
int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
|
551 |
int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
|
552 |
if (idx->ents_allocated <= idx->entry) {
|
553 |
idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*)); |
554 |
if (!idx->cluster)
|
555 |
return -1; |
556 |
idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
|
557 |
if (!idx->cluster[cl])
|
558 |
return -1; |
559 |
idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE; |
560 |
} |
561 |
|
562 |
idx->cluster[cl][id].flags = flags; |
563 |
idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list; |
564 |
idx->cluster[cl][id].len = size; |
565 |
idx->entry++; |
566 |
} |
567 |
|
568 |
put_buffer(pb, tag, 4);
|
569 |
put_le32(pb, size); |
570 |
put_buffer(pb, pkt->data, size); |
571 |
if (size & 1) |
572 |
put_byte(pb, 0);
|
573 |
|
574 |
put_flush_packet(pb); |
575 |
return 0; |
576 |
} |
577 |
|
578 |
static int avi_write_trailer(AVFormatContext *s) |
579 |
{ |
580 |
AVIContext *avi = s->priv_data; |
581 |
ByteIOContext *pb = s->pb; |
582 |
int res = 0; |
583 |
int i, j, n, nb_frames;
|
584 |
int64_t file_size; |
585 |
|
586 |
if (!url_is_streamed(pb)){
|
587 |
if (avi->riff_id == 1) { |
588 |
ff_end_tag(pb, avi->movi_list); |
589 |
res = avi_write_idx1(s); |
590 |
ff_end_tag(pb, avi->riff_start); |
591 |
} else {
|
592 |
avi_write_ix(s); |
593 |
ff_end_tag(pb, avi->movi_list); |
594 |
ff_end_tag(pb, avi->riff_start); |
595 |
|
596 |
file_size = url_ftell(pb); |
597 |
url_fseek(pb, avi->odml_list - 8, SEEK_SET);
|
598 |
put_tag(pb, "LIST"); /* Making this AVI OpenDML one */ |
599 |
url_fskip(pb, 16);
|
600 |
|
601 |
for (n=nb_frames=0;n<s->nb_streams;n++) { |
602 |
AVCodecContext *stream = s->streams[n]->codec; |
603 |
AVIStream *avist= s->streams[n]->priv_data; |
604 |
|
605 |
if (stream->codec_type == AVMEDIA_TYPE_VIDEO) {
|
606 |
if (nb_frames < avist->packet_count)
|
607 |
nb_frames = avist->packet_count; |
608 |
} else {
|
609 |
if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
|
610 |
nb_frames += avist->packet_count; |
611 |
} |
612 |
} |
613 |
} |
614 |
put_le32(pb, nb_frames); |
615 |
url_fseek(pb, file_size, SEEK_SET); |
616 |
|
617 |
avi_write_counters(s, avi->riff_id); |
618 |
} |
619 |
} |
620 |
put_flush_packet(pb); |
621 |
|
622 |
for (i=0; i<s->nb_streams; i++) { |
623 |
AVIStream *avist= s->streams[i]->priv_data; |
624 |
for (j=0; j<avist->indexes.ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++) |
625 |
av_free(avist->indexes.cluster[j]); |
626 |
av_freep(&avist->indexes.cluster); |
627 |
avist->indexes.ents_allocated = avist->indexes.entry = 0;
|
628 |
} |
629 |
|
630 |
return res;
|
631 |
} |
632 |
|
633 |
AVOutputFormat avi_muxer = { |
634 |
"avi",
|
635 |
NULL_IF_CONFIG_SMALL("AVI format"),
|
636 |
"video/x-msvideo",
|
637 |
"avi",
|
638 |
sizeof(AVIContext),
|
639 |
CODEC_ID_MP2, |
640 |
CODEC_ID_MPEG4, |
641 |
avi_write_header, |
642 |
avi_write_packet, |
643 |
avi_write_trailer, |
644 |
.codec_tag= (const AVCodecTag* const []){ff_codec_bmp_tags, ff_codec_wav_tags, 0}, |
645 |
.flags= AVFMT_VARIABLE_FPS, |
646 |
}; |