adding ffmpeg specific version

1 files changed, 663 insertions, 0 deletions

diff --git a/ffmpeg1/libavformat/avienc.c b/ffmpeg1/libavformat/avienc.c
new file mode 100644
index 0000000..15f0794
--- /dev/null
+++ b/ffmpeg1/libavformat/avienc.c
@@ -0,0 +1,663 @@
+/*
+ * 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 "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;
+    int 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);
+            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 (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){
+        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)
+                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);
+
+    avio_flush(pb);
+    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_free(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
+    },
+    .flags             = AVFMT_VARIABLE_FPS,
+};