+++ /dev/null
-/*
- * AVI encoder.
- * Copyright (c) 2000 Fabrice Bellard.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "avformat.h"
-#include "avi.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 {
- offset_t indx_start;
- int entry;
- int ents_allocated;
- AVIIentry** cluster;
-} AVIIndex;
-
-typedef struct {
- offset_t riff_start, movi_list, odml_list;
- offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
- int audio_strm_length[MAX_STREAMS];
- int riff_id;
-
- AVIIndex indexes[MAX_STREAMS];
-} AVIContext;
-
-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];
-}
-
-offset_t start_tag(ByteIOContext *pb, const char *tag)
-{
- put_tag(pb, tag);
- put_le32(pb, 0);
- return url_ftell(pb);
-}
-
-void end_tag(ByteIOContext *pb, offset_t start)
-{
- offset_t pos;
-
- pos = url_ftell(pb);
- url_fseek(pb, start - 4, SEEK_SET);
- put_le32(pb, (uint32_t)(pos - start));
- url_fseek(pb, pos, SEEK_SET);
-}
-
-/* Note: when encoding, the first matching tag is used, so order is
- important if multiple tags possible for a given codec. */
-const CodecTag codec_bmp_tags[] = {
- { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
- { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
- { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
-
- /* added based on MPlayer */
- { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
- { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
-
- { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
- { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
- { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
- { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
- { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
- { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
-
- /* added based on MPlayer */
- { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
- { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
- { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
- { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
-
- { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
- { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
-
- /* added based on MPlayer */
- { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
- { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
- { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
- { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
- { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
- { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
- { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
-
- { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
-
- /* added based on MPlayer */
- { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
-
- { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
-
- /* added based on MPlayer */
- { CODEC_ID_MSMPEG4V1, MKTAG('D', 'I', 'V', '4') },
-
- { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
-
- /* added based on MPlayer */
- { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
- { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
- { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
- { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
- { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
- { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
- { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
- { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
- { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
- { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
- { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
- { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
- { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
- { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
- { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
- { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
- { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
- { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
- { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
- { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
- { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
- { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
- { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
- { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
- { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
- { 0, 0 },
-};
-
-unsigned int codec_get_tag(const CodecTag *tags, int id)
-{
- while (tags->id != 0) {
- if (tags->id == id)
- return tags->tag;
- tags++;
- }
- return 0;
-}
-
-static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
-{
- while (tags->id != 0) {
- if (!tags->invalid_asf && tags->id == id)
- return tags->tag;
- tags++;
- }
- return 0;
-}
-
-enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
-{
- while (tags->id != 0) {
- if( toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)
- && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)
- && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)
- && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))
- return tags->id;
- tags++;
- }
- return CODEC_ID_NONE;
-}
-
-unsigned int codec_get_bmp_tag(int id)
-{
- return codec_get_tag(codec_bmp_tags, id);
-}
-
-unsigned int codec_get_wav_tag(int id)
-{
- return codec_get_tag(codec_wav_tags, id);
-}
-
-enum CodecID codec_get_bmp_id(unsigned int tag)
-{
- return codec_get_id(codec_bmp_tags, tag);
-}
-
-enum CodecID codec_get_wav_id(unsigned int tag)
-{
- return codec_get_id(codec_wav_tags, tag);
-}
-
-/* BITMAPINFOHEADER header */
-void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
-{
- put_le32(pb, 40 + enc->extradata_size); /* size */
- put_le32(pb, enc->width);
- put_le32(pb, enc->height);
- put_le16(pb, 1); /* planes */
-
- put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
- /* compression type */
- put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : enc->codec_tag);
- put_le32(pb, enc->width * enc->height * 3);
- put_le32(pb, 0);
- put_le32(pb, 0);
- put_le32(pb, 0);
- put_le32(pb, 0);
-
- put_buffer(pb, enc->extradata, enc->extradata_size);
-
- if (enc->extradata_size & 1)
- put_byte(pb, 0);
-}
-
-static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
-{
- switch(stream->codec_id) {
- case CODEC_ID_PCM_S16LE:
- *au_scale = *au_ssize = 2*stream->channels;
- *au_byterate = *au_ssize * stream->sample_rate;
- break;
- case CODEC_ID_PCM_U8:
- case CODEC_ID_PCM_ALAW:
- case CODEC_ID_PCM_MULAW:
- *au_scale = *au_ssize = stream->channels;
- *au_byterate = *au_ssize * stream->sample_rate;
- break;
- case CODEC_ID_MP2:
- *au_ssize = 1;
- *au_scale = 1;
- *au_byterate = stream->bit_rate / 8;
- case CODEC_ID_MP3:
- *au_ssize = 1;
- *au_scale = 1;
- *au_byterate = stream->bit_rate / 8;
- default:
- *au_ssize = 1;
- *au_scale = 1;
- *au_byterate = stream->bit_rate / 8;
- break;
- }
-}
-
-static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
- const char* riff_tag, const char* list_tag)
-{
- offset_t loff;
- int i;
-
- avi->riff_id++;
- for (i=0; i<MAX_STREAMS; i++)
- avi->indexes[i].entry = 0;
-
- avi->riff_start = start_tag(pb, "RIFF");
- put_tag(pb, riff_tag);
- loff = start_tag(pb, "LIST");
- put_tag(pb, list_tag);
- return loff;
-}
-
-static unsigned char* avi_stream2fourcc(unsigned char* tag, int index,
- enum CodecType type)
-{
- tag[0] = '0';
- tag[1] = '0' + index;
- if (type == CODEC_TYPE_VIDEO) {
- tag[2] = 'd';
- tag[3] = 'c';
- } else {
- tag[2] = 'w';
- tag[3] = 'b';
- }
- tag[4] = '\0';
- return tag;
-}
-
-static int avi_write_header(AVFormatContext *s)
-{
- AVIContext *avi = s->priv_data;
- ByteIOContext *pb = &s->pb;
- int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
- AVCodecContext *stream, *video_enc;
- offset_t list1, list2, strh, strf;
-
- /* header list */
- avi->riff_id = 0;
- list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
-
- /* avi header */
- put_tag(pb, "avih");
- put_le32(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 == CODEC_TYPE_VIDEO)
- video_enc = stream;
- }
-
- nb_frames = 0;
-
- if(video_enc){
- put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
- } else {
- put_le32(pb, 0);
- }
- put_le32(pb, bitrate / 8); /* XXX: not quite exact */
- put_le32(pb, 0); /* padding */
- put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
- avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
- put_le32(pb, nb_frames); /* nb frames, filled later */
- put_le32(pb, 0); /* initial frame */
- put_le32(pb, s->nb_streams); /* nb streams */
- put_le32(pb, 1024 * 1024); /* suggested buffer size */
- if(video_enc){
- put_le32(pb, video_enc->width);
- put_le32(pb, video_enc->height);
- } else {
- put_le32(pb, 0);
- put_le32(pb, 0);
- }
- put_le32(pb, 0); /* reserved */
- put_le32(pb, 0); /* reserved */
- put_le32(pb, 0); /* reserved */
- put_le32(pb, 0); /* reserved */
-
- /* stream list */
- for(i=0;i<n;i++) {
- list2 = start_tag(pb, "LIST");
- put_tag(pb, "strl");
-
- stream = &s->streams[i]->codec;
-
- /* FourCC should really be set by the codec itself */
- if (! stream->codec_tag) {
- stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
- }
-
- /* stream generic header */
- strh = start_tag(pb, "strh");
- switch(stream->codec_type) {
- case CODEC_TYPE_VIDEO:
- put_tag(pb, "vids");
- put_le32(pb, stream->codec_tag);
- put_le32(pb, 0); /* flags */
- put_le16(pb, 0); /* priority */
- put_le16(pb, 0); /* language */
- put_le32(pb, 0); /* initial frame */
-
- put_le32(pb, stream->frame_rate_base); /* scale */
- put_le32(pb, stream->frame_rate); /* rate */
-
- put_le32(pb, 0); /* start */
- avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
- put_le32(pb, nb_frames); /* length, XXX: fill later */
- put_le32(pb, 1024 * 1024); /* suggested buffer size */
- put_le32(pb, -1); /* quality */
- put_le32(pb, stream->width * stream->height * 3); /* sample size */
- put_le16(pb, 0);
- put_le16(pb, 0);
- put_le16(pb, stream->width);
- put_le16(pb, stream->height);
- break;
- case CODEC_TYPE_AUDIO:
- put_tag(pb, "auds");
- put_le32(pb, 1); /* tag */
- put_le32(pb, 0); /* flags */
- put_le16(pb, 0); /* priority */
- put_le16(pb, 0); /* language */
- put_le32(pb, 0); /* initial frame */
- parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
- put_le32(pb, au_scale); /* scale */
- put_le32(pb, au_byterate); /* rate */
- put_le32(pb, 0); /* start */
- avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
- put_le32(pb, 0); /* length, XXX: filled later */
- put_le32(pb, 12 * 1024); /* suggested buffer size */
- put_le32(pb, -1); /* quality */
- put_le32(pb, au_ssize); /* sample size */
- put_le32(pb, 0);
- put_le32(pb, 0);
- break;
- default:
- av_abort();
- }
- end_tag(pb, strh);
-
- strf = start_tag(pb, "strf");
- switch(stream->codec_type) {
- case CODEC_TYPE_VIDEO:
- put_bmp_header(pb, stream, codec_bmp_tags, 0);
- break;
- case CODEC_TYPE_AUDIO:
- if (put_wav_header(pb, stream) < 0) {
- av_free(avi);
- return -1;
- }
- break;
- default:
- av_abort();
- }
- end_tag(pb, strf);
-
- if (!url_is_streamed(pb)) {
- 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.
- */
- avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
- avi->indexes[i].indx_start = start_tag(pb, "JUNK");
- put_le16(pb, 4); /* wLongsPerEntry */
- put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
- put_byte(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
- put_le32(pb, 0); /* nEntriesInUse (will fill out later on) */
- put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
- /* dwChunkId */
- put_le64(pb, 0); /* dwReserved[3]
- put_le32(pb, 0); Must be 0. */
- for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
- put_le64(pb, 0);
- end_tag(pb, avi->indexes[i].indx_start);
- }
-
- end_tag(pb, list2);
- }
-
- if (!url_is_streamed(pb)) {
- /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
- avi->odml_list = start_tag(pb, "JUNK");
- put_tag(pb, "odml");
- put_tag(pb, "dmlh");
- put_le32(pb, 248);
- for (i = 0; i < 248; i+= 4)
- put_le32(pb, 0);
- end_tag(pb, avi->odml_list);
- }
-
- end_tag(pb, list1);
-
- avi->movi_list = start_tag(pb, "LIST");
- put_tag(pb, "movi");
-
- put_flush_packet(pb);
-
- return 0;
-}
-
-static int avi_write_ix(AVFormatContext *s)
-{
- ByteIOContext *pb = &s->pb;
- AVIContext *avi = s->priv_data;
- unsigned char tag[5];
- unsigned char ix_tag[] = "ix00";
- int i, j;
-
- if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
- return -1;
-
- for (i=0;i<s->nb_streams;i++) {
- offset_t ix, pos;
-
- avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
- ix_tag[3] = '0' + i;
-
- /* Writing AVI OpenDML leaf index chunk */
- ix = url_ftell(pb);
- put_tag(pb, &ix_tag[0]); /* ix?? */
- put_le32(pb, avi->indexes[i].entry * 8 + 24);
- /* chunk size */
- put_le16(pb, 2); /* wLongsPerEntry */
- put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
- put_byte(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
- put_le32(pb, avi->indexes[i].entry);
- /* nEntriesInUse */
- put_tag(pb, &tag[0]); /* dwChunkId */
- put_le64(pb, avi->movi_list);/* qwBaseOffset */
- put_le32(pb, 0); /* dwReserved_3 (must be 0) */
-
- for (j=0; j<avi->indexes[i].entry; j++) {
- AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
- put_le32(pb, ie->pos + 8);
- put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
- (ie->flags & 0x10 ? 0 : 0x80000000));
- }
- put_flush_packet(pb);
- pos = url_ftell(pb);
-
- /* Updating one entry in the AVI OpenDML master index */
- url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
- put_tag(pb, "indx"); /* enabling this entry */
- url_fskip(pb, 8);
- put_le32(pb, avi->riff_id); /* nEntriesInUse */
- url_fskip(pb, 16*avi->riff_id);
- put_le64(pb, ix); /* qwOffset */
- put_le32(pb, pos - ix); /* dwSize */
- put_le32(pb, avi->indexes[i].entry); /* dwDuration */
-
- url_fseek(pb, pos, SEEK_SET);
- }
- return 0;
-}
-
-static int avi_write_idx1(AVFormatContext *s)
-{
- ByteIOContext *pb = &s->pb;
- AVIContext *avi = s->priv_data;
- offset_t file_size, idx_chunk;
- int i, n, nb_frames, au_byterate, au_ssize, au_scale;
- AVCodecContext *stream;
- unsigned char tag[5];
-
- if (!url_is_streamed(pb)) {
- AVIIentry* ie = 0, *tie;
- int entry[MAX_STREAMS];
- int empty, stream_id = -1;
-
- idx_chunk = start_tag(pb, "idx1");
- memset(&entry[0], 0, sizeof(entry));
- do {
- empty = 1;
- for (i=0; i<s->nb_streams; i++) {
- if (avi->indexes[i].entry <= entry[i])
- continue;
-
- tie = avi_get_ientry(&avi->indexes[i], entry[i]);
- if (empty || tie->pos < ie->pos) {
- ie = tie;
- stream_id = i;
- }
- empty = 0;
- }
- if (!empty) {
- avi_stream2fourcc(&tag[0], stream_id,
- s->streams[stream_id]->codec.codec_type);
- put_tag(pb, &tag[0]);
- put_le32(pb, ie->flags);
- put_le32(pb, ie->pos);
- put_le32(pb, ie->len);
- entry[stream_id]++;
- }
- } while (!empty);
- end_tag(pb, idx_chunk);
-
- /* Fill in frame/sample counters */
- file_size = url_ftell(pb);
- nb_frames = 0;
- for(n=0;n<s->nb_streams;n++) {
- if (avi->frames_hdr_strm[n] != 0) {
- stream = &s->streams[n]->codec;
- url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
- if (stream->codec_type == CODEC_TYPE_VIDEO) {
- put_le32(pb, stream->frame_number);
- if (nb_frames < stream->frame_number)
- nb_frames = stream->frame_number;
- } else {
- if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
- put_le32(pb, stream->frame_number);
- nb_frames += stream->frame_number;
- } else {
- parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
- put_le32(pb, avi->audio_strm_length[n] / au_ssize);
- }
- }
- }
- }
- if (avi->frames_hdr_all != 0) {
- url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
- put_le32(pb, nb_frames);
- }
- url_fseek(pb, file_size, SEEK_SET);
- }
- return 0;
-}
-
-static int avi_write_packet(AVFormatContext *s, int stream_index,
- const uint8_t *buf, int size, int64_t pts)
-{
- AVIContext *avi = s->priv_data;
- ByteIOContext *pb = &s->pb;
- unsigned char tag[5];
- unsigned int flags;
- AVCodecContext *enc;
-
- if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) {
- avi_write_ix(s);
- end_tag(pb, avi->movi_list);
-
- if (avi->riff_id == 1)
- avi_write_idx1(s);
-
- end_tag(pb, avi->riff_start);
- avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
- }
-
- enc = &s->streams[stream_index]->codec;
- avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
- if (enc->codec_type == CODEC_TYPE_AUDIO) {
- avi->audio_strm_length[stream_index] += size;
- flags = 0x10;
- } else
- flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
-
- if (!url_is_streamed(&s->pb)) {
- AVIIndex* idx = &avi->indexes[stream_index];
- 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(idx->cluster, (cl+1)*sizeof(void*));
- if (!idx->cluster)
- return -1;
- idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
- if (!idx->cluster[cl])
- return -1;
- idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
- }
-
- idx->cluster[cl][id].flags = flags;
- idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
- idx->cluster[cl][id].len = size;
- idx->entry++;
- }
-
- put_buffer(pb, tag, 4);
- put_le32(pb, size);
- put_buffer(pb, buf, size);
- if (size & 1)
- put_byte(pb, 0);
-
- put_flush_packet(pb);
- return 0;
-}
-
-static int avi_write_trailer(AVFormatContext *s)
-{
- AVIContext *avi = s->priv_data;
- ByteIOContext *pb = &s->pb;
- int res = 0;
- int i, j, n, nb_frames;
- offset_t file_size;
-
- if (avi->riff_id == 1) {
- end_tag(pb, avi->movi_list);
- res = avi_write_idx1(s);
- end_tag(pb, avi->riff_start);
- } else {
- avi_write_ix(s);
- end_tag(pb, avi->movi_list);
- end_tag(pb, avi->riff_start);
-
- file_size = url_ftell(pb);
- url_fseek(pb, avi->odml_list - 8, SEEK_SET);
- put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
- url_fskip(pb, 16);
-
- for (n=nb_frames=0;n<s->nb_streams;n++) {
- AVCodecContext *stream = &s->streams[n]->codec;
- if (stream->codec_type == CODEC_TYPE_VIDEO) {
- if (nb_frames < stream->frame_number)
- nb_frames = stream->frame_number;
- } else {
- if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
- nb_frames += stream->frame_number;
- }
- }
- }
- put_le32(pb, nb_frames);
- url_fseek(pb, file_size, SEEK_SET);
- }
- put_flush_packet(pb);
-
- for (i=0; i<MAX_STREAMS; i++) {
- for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
- av_free(avi->indexes[i].cluster[j]);
- av_free(avi->indexes[i].cluster);
- avi->indexes[i].cluster = NULL;
- avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
- }
-
- return res;
-}
-
-static AVOutputFormat avi_oformat = {
- "avi",
- "avi format",
- "video/x-msvideo",
- "avi",
- sizeof(AVIContext),
- CODEC_ID_MP2,
- CODEC_ID_MPEG4,
- avi_write_header,
- avi_write_packet,
- avi_write_trailer,
-};
-
-int avienc_init(void)
-{
- av_register_output_format(&avi_oformat);
- return 0;
-}
projects / synfig.git / blobdiff