--- /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