| /* |
| * FLV demuxer |
| * Copyright (c) 2003 The FFmpeg Project |
| * |
| * This demuxer will generate a 1 byte extradata for VP6F content. |
| * It is composed of: |
| * - upper 4bits: difference between encoded width and visible width |
| * - lower 4bits: difference between encoded height and visible height |
| * |
| * 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 |
| */ |
| |
| #include "libavutil/avstring.h" |
| #include "libavutil/dict.h" |
| #include "libavcodec/bytestream.h" |
| #include "libavcodec/mpeg4audio.h" |
| #include "avformat.h" |
| #include "avio_internal.h" |
| #include "flv.h" |
| |
| typedef struct { |
| int wrong_dts; ///< wrong dts due to negative cts |
| } FLVContext; |
| |
| static int flv_probe(AVProbeData *p) |
| { |
| const uint8_t *d; |
| |
| d = p->buf; |
| if (d[0] == 'F' && d[1] == 'L' && d[2] == 'V' && d[3] < 5 && d[5]==0 && AV_RB32(d+5)>8) { |
| return AVPROBE_SCORE_MAX; |
| } |
| return 0; |
| } |
| |
| static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, int flv_codecid) { |
| AVCodecContext *acodec = astream->codec; |
| switch(flv_codecid) { |
| //no distinction between S16 and S8 PCM codec flags |
| case FLV_CODECID_PCM: |
| acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 : |
| #if HAVE_BIGENDIAN |
| CODEC_ID_PCM_S16BE; |
| #else |
| CODEC_ID_PCM_S16LE; |
| #endif |
| break; |
| case FLV_CODECID_PCM_LE: |
| acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 : CODEC_ID_PCM_S16LE; break; |
| case FLV_CODECID_AAC : acodec->codec_id = CODEC_ID_AAC; break; |
| case FLV_CODECID_ADPCM: acodec->codec_id = CODEC_ID_ADPCM_SWF; break; |
| case FLV_CODECID_SPEEX: |
| acodec->codec_id = CODEC_ID_SPEEX; |
| acodec->sample_rate = 16000; |
| break; |
| case FLV_CODECID_MP3 : acodec->codec_id = CODEC_ID_MP3 ; astream->need_parsing = AVSTREAM_PARSE_FULL; break; |
| case FLV_CODECID_NELLYMOSER_8KHZ_MONO: |
| acodec->sample_rate = 8000; //in case metadata does not otherwise declare samplerate |
| acodec->codec_id = CODEC_ID_NELLYMOSER; |
| break; |
| case FLV_CODECID_NELLYMOSER_16KHZ_MONO: |
| acodec->sample_rate = 16000; |
| acodec->codec_id = CODEC_ID_NELLYMOSER; |
| break; |
| case FLV_CODECID_NELLYMOSER: |
| acodec->codec_id = CODEC_ID_NELLYMOSER; |
| break; |
| default: |
| av_log(s, AV_LOG_INFO, "Unsupported audio codec (%x)\n", flv_codecid >> FLV_AUDIO_CODECID_OFFSET); |
| acodec->codec_tag = flv_codecid >> FLV_AUDIO_CODECID_OFFSET; |
| } |
| } |
| |
| static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, int flv_codecid) { |
| AVCodecContext *vcodec = vstream->codec; |
| switch(flv_codecid) { |
| case FLV_CODECID_H263 : vcodec->codec_id = CODEC_ID_FLV1 ; break; |
| case FLV_CODECID_SCREEN: vcodec->codec_id = CODEC_ID_FLASHSV; break; |
| case FLV_CODECID_SCREEN2: vcodec->codec_id = CODEC_ID_FLASHSV2; break; |
| case FLV_CODECID_VP6 : vcodec->codec_id = CODEC_ID_VP6F ; |
| case FLV_CODECID_VP6A : |
| if(flv_codecid == FLV_CODECID_VP6A) |
| vcodec->codec_id = CODEC_ID_VP6A; |
| if(vcodec->extradata_size != 1) { |
| vcodec->extradata_size = 1; |
| vcodec->extradata = av_malloc(1); |
| } |
| vcodec->extradata[0] = avio_r8(s->pb); |
| return 1; // 1 byte body size adjustment for flv_read_packet() |
| case FLV_CODECID_H264: |
| vcodec->codec_id = CODEC_ID_H264; |
| return 3; // not 4, reading packet type will consume one byte |
| default: |
| av_log(s, AV_LOG_INFO, "Unsupported video codec (%x)\n", flv_codecid); |
| vcodec->codec_tag = flv_codecid; |
| } |
| |
| return 0; |
| } |
| |
| static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize) { |
| int length = avio_rb16(ioc); |
| if(length >= buffsize) { |
| avio_skip(ioc, length); |
| return -1; |
| } |
| |
| avio_read(ioc, buffer, length); |
| |
| buffer[length] = '\0'; |
| |
| return length; |
| } |
| |
| static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, AVStream *vstream, int64_t max_pos) { |
| unsigned int timeslen = 0, fileposlen = 0, i; |
| char str_val[256]; |
| int64_t *times = NULL; |
| int64_t *filepositions = NULL; |
| int ret = AVERROR(ENOSYS); |
| int64_t initial_pos = avio_tell(ioc); |
| |
| while (avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) { |
| int64_t** current_array; |
| unsigned int arraylen; |
| |
| // Expect array object in context |
| if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY) |
| break; |
| |
| arraylen = avio_rb32(ioc); |
| if(arraylen>>28) |
| break; |
| |
| if (!strcmp(KEYFRAMES_TIMESTAMP_TAG , str_val) && !times){ |
| current_array= × |
| timeslen= arraylen; |
| }else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) && !filepositions){ |
| current_array= &filepositions; |
| fileposlen= arraylen; |
| }else // unexpected metatag inside keyframes, will not use such metadata for indexing |
| break; |
| |
| if (!(*current_array = av_mallocz(sizeof(**current_array) * arraylen))) { |
| ret = AVERROR(ENOMEM); |
| goto finish; |
| } |
| |
| for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) { |
| if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER) |
| goto finish; |
| current_array[0][i] = av_int2dbl(avio_rb64(ioc)); |
| } |
| if (times && filepositions) { |
| // All done, exiting at a position allowing amf_parse_object |
| // to finish parsing the object |
| ret = 0; |
| break; |
| } |
| } |
| |
| if (timeslen == fileposlen) { |
| for(i = 0; i < timeslen; i++) |
| av_add_index_entry(vstream, filepositions[i], times[i]*1000, 0, 0, AVINDEX_KEYFRAME); |
| } else |
| av_log(s, AV_LOG_WARNING, "Invalid keyframes object, skipping.\n"); |
| |
| finish: |
| av_freep(×); |
| av_freep(&filepositions); |
| avio_seek(ioc, initial_pos, SEEK_SET); |
| return ret; |
| } |
| |
| static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) { |
| AVCodecContext *acodec, *vcodec; |
| AVIOContext *ioc; |
| AMFDataType amf_type; |
| char str_val[256]; |
| double num_val; |
| |
| num_val = 0; |
| ioc = s->pb; |
| |
| amf_type = avio_r8(ioc); |
| |
| switch(amf_type) { |
| case AMF_DATA_TYPE_NUMBER: |
| num_val = av_int2dbl(avio_rb64(ioc)); break; |
| case AMF_DATA_TYPE_BOOL: |
| num_val = avio_r8(ioc); break; |
| case AMF_DATA_TYPE_STRING: |
| if(amf_get_string(ioc, str_val, sizeof(str_val)) < 0) |
| return -1; |
| break; |
| case AMF_DATA_TYPE_OBJECT: { |
| unsigned int keylen; |
| |
| if (ioc->seekable && key && !strcmp(KEYFRAMES_TAG, key) && depth == 1) |
| if (parse_keyframes_index(s, ioc, vstream, max_pos) < 0) |
| av_log(s, AV_LOG_ERROR, "Keyframe index parsing failed\n"); |
| |
| while(avio_tell(ioc) < max_pos - 2 && (keylen = avio_rb16(ioc))) { |
| avio_skip(ioc, keylen); //skip key string |
| if(amf_parse_object(s, NULL, NULL, NULL, max_pos, depth + 1) < 0) |
| return -1; //if we couldn't skip, bomb out. |
| } |
| if(avio_r8(ioc) != AMF_END_OF_OBJECT) |
| return -1; |
| } |
| break; |
| case AMF_DATA_TYPE_NULL: |
| case AMF_DATA_TYPE_UNDEFINED: |
| case AMF_DATA_TYPE_UNSUPPORTED: |
| break; //these take up no additional space |
| case AMF_DATA_TYPE_MIXEDARRAY: |
| avio_skip(ioc, 4); //skip 32-bit max array index |
| while(avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) { |
| //this is the only case in which we would want a nested parse to not skip over the object |
| if(amf_parse_object(s, astream, vstream, str_val, max_pos, depth + 1) < 0) |
| return -1; |
| } |
| if(avio_r8(ioc) != AMF_END_OF_OBJECT) |
| return -1; |
| break; |
| case AMF_DATA_TYPE_ARRAY: { |
| unsigned int arraylen, i; |
| |
| arraylen = avio_rb32(ioc); |
| for(i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) { |
| if(amf_parse_object(s, NULL, NULL, NULL, max_pos, depth + 1) < 0) |
| return -1; //if we couldn't skip, bomb out. |
| } |
| } |
| break; |
| case AMF_DATA_TYPE_DATE: |
| avio_skip(ioc, 8 + 2); //timestamp (double) and UTC offset (int16) |
| break; |
| default: //unsupported type, we couldn't skip |
| return -1; |
| } |
| |
| if(depth == 1 && key) { //only look for metadata values when we are not nested and key != NULL |
| acodec = astream ? astream->codec : NULL; |
| vcodec = vstream ? vstream->codec : NULL; |
| |
| if(amf_type == AMF_DATA_TYPE_BOOL) { |
| av_strlcpy(str_val, num_val > 0 ? "true" : "false", sizeof(str_val)); |
| av_dict_set(&s->metadata, key, str_val, 0); |
| } else if(amf_type == AMF_DATA_TYPE_NUMBER) { |
| snprintf(str_val, sizeof(str_val), "%.f", num_val); |
| av_dict_set(&s->metadata, key, str_val, 0); |
| if(!strcmp(key, "duration")) s->duration = num_val * AV_TIME_BASE; |
| else if(!strcmp(key, "videodatarate") && vcodec && 0 <= (int)(num_val * 1024.0)) |
| vcodec->bit_rate = num_val * 1024.0; |
| else if(!strcmp(key, "audiodatarate") && acodec && 0 <= (int)(num_val * 1024.0)) |
| acodec->bit_rate = num_val * 1024.0; |
| } else if(amf_type == AMF_DATA_TYPE_OBJECT){ |
| if(s->nb_streams==1 && ((!acodec && !strcmp(key, "audiocodecid")) || (!vcodec && !strcmp(key, "videocodecid")))){ |
| s->ctx_flags &= ~AVFMTCTX_NOHEADER; //If there is either audio/video missing, codecid will be an empty object |
| } |
| } else if (amf_type == AMF_DATA_TYPE_STRING) |
| av_dict_set(&s->metadata, key, str_val, 0); |
| } |
| |
| return 0; |
| } |
| |
| static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) { |
| AMFDataType type; |
| AVStream *stream, *astream, *vstream; |
| AVIOContext *ioc; |
| int i; |
| char buffer[11]; //only needs to hold the string "onMetaData". Anything longer is something we don't want. |
| |
| astream = NULL; |
| vstream = NULL; |
| ioc = s->pb; |
| |
| //first object needs to be "onMetaData" string |
| type = avio_r8(ioc); |
| if(type != AMF_DATA_TYPE_STRING || amf_get_string(ioc, buffer, sizeof(buffer)) < 0 || strcmp(buffer, "onMetaData")) |
| return -1; |
| |
| //find the streams now so that amf_parse_object doesn't need to do the lookup every time it is called. |
| for(i = 0; i < s->nb_streams; i++) { |
| stream = s->streams[i]; |
| if (stream->codec->codec_type == AVMEDIA_TYPE_AUDIO) astream = stream; |
| else if(stream->codec->codec_type == AVMEDIA_TYPE_VIDEO) vstream = stream; |
| } |
| |
| //parse the second object (we want a mixed array) |
| if(amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| static AVStream *create_stream(AVFormatContext *s, int is_audio){ |
| AVStream *st = av_new_stream(s, is_audio); |
| if (!st) |
| return NULL; |
| st->codec->codec_type = is_audio ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO; |
| av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */ |
| return st; |
| } |
| |
| static int flv_read_header(AVFormatContext *s, |
| AVFormatParameters *ap) |
| { |
| int offset, flags; |
| |
| avio_skip(s->pb, 4); |
| flags = avio_r8(s->pb); |
| /* old flvtool cleared this field */ |
| /* FIXME: better fix needed */ |
| if (!flags) { |
| flags = FLV_HEADER_FLAG_HASVIDEO | FLV_HEADER_FLAG_HASAUDIO; |
| av_log(s, AV_LOG_WARNING, "Broken FLV file, which says no streams present, this might fail\n"); |
| } |
| |
| if((flags & (FLV_HEADER_FLAG_HASVIDEO|FLV_HEADER_FLAG_HASAUDIO)) |
| != (FLV_HEADER_FLAG_HASVIDEO|FLV_HEADER_FLAG_HASAUDIO)) |
| s->ctx_flags |= AVFMTCTX_NOHEADER; |
| |
| if(flags & FLV_HEADER_FLAG_HASVIDEO){ |
| if(!create_stream(s, 0)) |
| return AVERROR(ENOMEM); |
| } |
| if(flags & FLV_HEADER_FLAG_HASAUDIO){ |
| if(!create_stream(s, 1)) |
| return AVERROR(ENOMEM); |
| } |
| |
| offset = avio_rb32(s->pb); |
| avio_seek(s->pb, offset, SEEK_SET); |
| avio_skip(s->pb, 4); |
| |
| s->start_time = 0; |
| |
| return 0; |
| } |
| |
| static int flv_get_extradata(AVFormatContext *s, AVStream *st, int size) |
| { |
| av_free(st->codec->extradata); |
| st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE); |
| if (!st->codec->extradata) |
| return AVERROR(ENOMEM); |
| st->codec->extradata_size = size; |
| avio_read(s->pb, st->codec->extradata, st->codec->extradata_size); |
| return 0; |
| } |
| |
| static int flv_read_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| FLVContext *flv = s->priv_data; |
| int ret, i, type, size, flags, is_audio; |
| int64_t next, pos; |
| int64_t dts, pts = AV_NOPTS_VALUE; |
| AVStream *st = NULL; |
| |
| for(;;avio_skip(s->pb, 4)){ /* pkt size is repeated at end. skip it */ |
| pos = avio_tell(s->pb); |
| type = avio_r8(s->pb); |
| size = avio_rb24(s->pb); |
| dts = avio_rb24(s->pb); |
| dts |= avio_r8(s->pb) << 24; |
| av_dlog(s, "type:%d, size:%d, dts:%"PRId64"\n", type, size, dts); |
| if (url_feof(s->pb)) |
| return AVERROR_EOF; |
| avio_skip(s->pb, 3); /* stream id, always 0 */ |
| flags = 0; |
| |
| if(size == 0) |
| continue; |
| |
| next= size + avio_tell(s->pb); |
| |
| if (type == FLV_TAG_TYPE_AUDIO) { |
| is_audio=1; |
| flags = avio_r8(s->pb); |
| size--; |
| } else if (type == FLV_TAG_TYPE_VIDEO) { |
| is_audio=0; |
| flags = avio_r8(s->pb); |
| size--; |
| if ((flags & 0xf0) == 0x50) /* video info / command frame */ |
| goto skip; |
| } else { |
| if (type == FLV_TAG_TYPE_META && size > 13+1+4) |
| flv_read_metabody(s, next); |
| else /* skip packet */ |
| av_log(s, AV_LOG_DEBUG, "skipping flv packet: type %d, size %d, flags %d\n", type, size, flags); |
| skip: |
| avio_seek(s->pb, next, SEEK_SET); |
| continue; |
| } |
| |
| /* skip empty data packets */ |
| if (!size) |
| continue; |
| |
| /* now find stream */ |
| for(i=0;i<s->nb_streams;i++) { |
| st = s->streams[i]; |
| if (st->id == is_audio) |
| break; |
| } |
| if(i == s->nb_streams){ |
| av_log(s, AV_LOG_ERROR, "invalid stream\n"); |
| st= create_stream(s, is_audio); |
| s->ctx_flags &= ~AVFMTCTX_NOHEADER; |
| } |
| av_dlog(s, "%d %X %d \n", is_audio, flags, st->discard); |
| if( (st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || is_audio)) |
| ||(st->discard >= AVDISCARD_BIDIR && ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_DISP_INTER && !is_audio)) |
| || st->discard >= AVDISCARD_ALL |
| ){ |
| avio_seek(s->pb, next, SEEK_SET); |
| continue; |
| } |
| if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY) |
| av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME); |
| break; |
| } |
| |
| // if not streamed and no duration from metadata then seek to end to find the duration from the timestamps |
| if(s->pb->seekable && (!s->duration || s->duration==AV_NOPTS_VALUE)){ |
| int size; |
| const int64_t pos= avio_tell(s->pb); |
| const int64_t fsize= avio_size(s->pb); |
| avio_seek(s->pb, fsize-4, SEEK_SET); |
| size= avio_rb32(s->pb); |
| avio_seek(s->pb, fsize-3-size, SEEK_SET); |
| if(size == avio_rb24(s->pb) + 11){ |
| uint32_t ts = avio_rb24(s->pb); |
| ts |= avio_r8(s->pb) << 24; |
| s->duration = ts * (int64_t)AV_TIME_BASE / 1000; |
| } |
| avio_seek(s->pb, pos, SEEK_SET); |
| } |
| |
| if(is_audio){ |
| if(!st->codec->channels || !st->codec->sample_rate || !st->codec->bits_per_coded_sample) { |
| st->codec->channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1; |
| st->codec->sample_rate = (44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >> FLV_AUDIO_SAMPLERATE_OFFSET) >> 3); |
| st->codec->bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8; |
| } |
| if(!st->codec->codec_id){ |
| flv_set_audio_codec(s, st, flags & FLV_AUDIO_CODECID_MASK); |
| } |
| }else{ |
| size -= flv_set_video_codec(s, st, flags & FLV_VIDEO_CODECID_MASK); |
| } |
| |
| if (st->codec->codec_id == CODEC_ID_AAC || |
| st->codec->codec_id == CODEC_ID_H264) { |
| int type = avio_r8(s->pb); |
| size--; |
| if (st->codec->codec_id == CODEC_ID_H264) { |
| int32_t cts = (avio_rb24(s->pb)+0xff800000)^0xff800000; // sign extension |
| pts = dts + cts; |
| if (cts < 0) { // dts are wrong |
| flv->wrong_dts = 1; |
| av_log(s, AV_LOG_WARNING, "negative cts, previous timestamps might be wrong\n"); |
| } |
| if (flv->wrong_dts) |
| dts = AV_NOPTS_VALUE; |
| } |
| if (type == 0) { |
| if ((ret = flv_get_extradata(s, st, size)) < 0) |
| return ret; |
| if (st->codec->codec_id == CODEC_ID_AAC) { |
| MPEG4AudioConfig cfg; |
| ff_mpeg4audio_get_config(&cfg, st->codec->extradata, |
| st->codec->extradata_size); |
| st->codec->channels = cfg.channels; |
| if (cfg.ext_sample_rate) |
| st->codec->sample_rate = cfg.ext_sample_rate; |
| else |
| st->codec->sample_rate = cfg.sample_rate; |
| av_dlog(s, "mp4a config channels %d sample rate %d\n", |
| st->codec->channels, st->codec->sample_rate); |
| } |
| |
| ret = AVERROR(EAGAIN); |
| goto leave; |
| } |
| } |
| |
| /* skip empty data packets */ |
| if (!size) { |
| ret = AVERROR(EAGAIN); |
| goto leave; |
| } |
| |
| ret= av_get_packet(s->pb, pkt, size); |
| if (ret < 0) { |
| return AVERROR(EIO); |
| } |
| /* note: we need to modify the packet size here to handle the last |
| packet */ |
| pkt->size = ret; |
| pkt->dts = dts; |
| pkt->pts = pts == AV_NOPTS_VALUE ? dts : pts; |
| pkt->stream_index = st->index; |
| |
| if (is_audio || ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY)) |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| |
| leave: |
| avio_skip(s->pb, 4); |
| return ret; |
| } |
| |
| static int flv_read_seek(AVFormatContext *s, int stream_index, |
| int64_t ts, int flags) |
| { |
| return avio_seek_time(s->pb, stream_index, ts, flags); |
| } |
| |
| #if 0 /* don't know enough to implement this */ |
| static int flv_read_seek2(AVFormatContext *s, int stream_index, |
| int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
| { |
| int ret = AVERROR(ENOSYS); |
| |
| if (ts - min_ts > (uint64_t)(max_ts - ts)) flags |= AVSEEK_FLAG_BACKWARD; |
| |
| if (!s->pb->seekable) { |
| if (stream_index < 0) { |
| stream_index = av_find_default_stream_index(s); |
| if (stream_index < 0) |
| return -1; |
| |
| /* timestamp for default must be expressed in AV_TIME_BASE units */ |
| ts = av_rescale_rnd(ts, 1000, AV_TIME_BASE, |
| flags & AVSEEK_FLAG_BACKWARD ? AV_ROUND_DOWN : AV_ROUND_UP); |
| } |
| ret = avio_seek_time(s->pb, stream_index, ts, flags); |
| } |
| |
| if (ret == AVERROR(ENOSYS)) |
| ret = av_seek_frame(s, stream_index, ts, flags); |
| return ret; |
| } |
| #endif |
| |
| AVInputFormat ff_flv_demuxer = { |
| "flv", |
| NULL_IF_CONFIG_SMALL("FLV format"), |
| sizeof(FLVContext), |
| flv_probe, |
| flv_read_header, |
| flv_read_packet, |
| .read_seek = flv_read_seek, |
| #if 0 |
| .read_seek2 = flv_read_seek2, |
| #endif |
| .extensions = "flv", |
| .value = CODEC_ID_FLV1, |
| }; |