| /* |
| * 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 "libavcodec/mpeg4audio.h" |
| #include "avformat.h" |
| #include "flv.h" |
| |
| //#define DEBUG_SEEK |
| |
| 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) { |
| 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_S8 : |
| #ifdef WORDS_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_S8 : 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 |
| 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_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] = get_byte(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(ByteIOContext *ioc, char *buffer, int buffsize) { |
| int length = get_be16(ioc); |
| if(length >= buffsize) { |
| url_fskip(ioc, length); |
| return -1; |
| } |
| |
| get_buffer(ioc, buffer, length); |
| |
| buffer[length] = '\0'; |
| |
| return length; |
| } |
| |
| static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) { |
| AVCodecContext *acodec, *vcodec; |
| ByteIOContext *ioc; |
| AMFDataType amf_type; |
| char str_val[256]; |
| double num_val; |
| |
| num_val = 0; |
| ioc = s->pb; |
| |
| amf_type = get_byte(ioc); |
| |
| switch(amf_type) { |
| case AMF_DATA_TYPE_NUMBER: |
| num_val = av_int2dbl(get_be64(ioc)); break; |
| case AMF_DATA_TYPE_BOOL: |
| num_val = get_byte(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; |
| |
| while(url_ftell(ioc) < max_pos - 2 && (keylen = get_be16(ioc))) { |
| url_fskip(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(get_byte(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: |
| url_fskip(ioc, 4); //skip 32-bit max array index |
| while(url_ftell(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(get_byte(ioc) != AMF_END_OF_OBJECT) |
| return -1; |
| break; |
| case AMF_DATA_TYPE_ARRAY: { |
| unsigned int arraylen, i; |
| |
| arraylen = get_be32(ioc); |
| for(i = 0; i < arraylen && url_ftell(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: |
| url_fskip(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) { |
| if(!strcmp(key, "stereo") && acodec) acodec->channels = num_val > 0 ? 2 : 1; |
| } else if(amf_type == AMF_DATA_TYPE_NUMBER) { |
| if(!strcmp(key, "duration")) s->duration = num_val * AV_TIME_BASE; |
| // else if(!strcmp(key, "width") && vcodec && num_val > 0) vcodec->width = num_val; |
| // else if(!strcmp(key, "height") && vcodec && num_val > 0) vcodec->height = num_val; |
| else if(!strcmp(key, "videodatarate") && vcodec && 0 <= (int)(num_val * 1024.0)) |
| vcodec->bit_rate = num_val * 1024.0; |
| else if(!strcmp(key, "audiocodecid") && acodec && 0 <= (int)num_val) |
| flv_set_audio_codec(s, astream, (int)num_val << FLV_AUDIO_CODECID_OFFSET); |
| else if(!strcmp(key, "videocodecid") && vcodec && 0 <= (int)num_val) |
| flv_set_video_codec(s, vstream, (int)num_val); |
| else if(!strcmp(key, "audiosamplesize") && acodec && 0 < (int)num_val) { |
| acodec->bits_per_coded_sample = num_val; |
| //we may have to rewrite a previously read codecid because FLV only marks PCM endianness. |
| if(num_val == 8 && (acodec->codec_id == CODEC_ID_PCM_S16BE || acodec->codec_id == CODEC_ID_PCM_S16LE)) |
| acodec->codec_id = CODEC_ID_PCM_S8; |
| } |
| else if(!strcmp(key, "audiosamplerate") && acodec && num_val >= 0) { |
| //some tools, like FLVTool2, write consistently approximate metadata sample rates |
| if (!acodec->sample_rate) { |
| switch((int)num_val) { |
| case 44000: acodec->sample_rate = 44100 ; break; |
| case 22000: acodec->sample_rate = 22050 ; break; |
| case 11000: acodec->sample_rate = 11025 ; break; |
| case 5000 : acodec->sample_rate = 5512 ; break; |
| default : acodec->sample_rate = num_val; |
| } |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) { |
| AMFDataType type; |
| AVStream *stream, *astream, *vstream; |
| ByteIOContext *ioc; |
| int i, keylen; |
| char buffer[11]; //only needs to hold the string "onMetaData". Anything longer is something we don't want. |
| |
| astream = NULL; |
| vstream = NULL; |
| keylen = 0; |
| ioc = s->pb; |
| |
| //first object needs to be "onMetaData" string |
| type = get_byte(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 == CODEC_TYPE_AUDIO) astream = stream; |
| else if(stream->codec->codec_type == CODEC_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 ? CODEC_TYPE_AUDIO : CODEC_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; |
| |
| url_fskip(s->pb, 4); |
| flags = get_byte(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 = get_be32(s->pb); |
| url_fseek(s->pb, offset, SEEK_SET); |
| |
| s->start_time = 0; |
| |
| return 0; |
| } |
| |
| static int64_t flv_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit) |
| { |
| int64_t pos, pts; |
| int type, size, flags; |
| int extraBytes[6]; |
| int pad; |
| int i,j; |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek stream_index=%d pos=0x%llx (%lld)\n", stream_index, *pos_arg, *pos_arg); |
| #endif |
| pos = *pos_arg; |
| // Skip 4 bytes for the previous tag size or searching from a size one byte further will read back the same location |
| url_fseek(s->pb, pos + 4, SEEK_SET); |
| for(;;) { |
| // We may not be at a valid point in the stream |
| if (url_feof(s->pb)) |
| return AV_NOPTS_VALUE; |
| |
| pos = url_ftell(s->pb); |
| if (pos >= pos_limit) |
| return AV_NOPTS_VALUE; |
| |
| // To see if we're at a valid point we check to see if the type byte is valid |
| // and if the padding is all zero. |
| |
| //prevTagSize = get_be32(s->pb); |
| type = get_byte(s->pb); |
| if (type != 8 && type != 9 && type != 18) |
| { |
| continue; |
| } |
| |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek found potential type code=%d pos=0x%llx\n", type, pos); |
| #endif |
| for (i = 0; i < 6; i++) |
| extraBytes[i] = get_byte(s->pb); |
| pad = 0; |
| for (j = 0; j < 4 && !pad; j++) |
| { |
| pad = get_byte(s->pb); |
| if (pad != 0) |
| { |
| // Now we see if there were any valid type markers in the data we've read. If so |
| // then we'll need to seek back to check that one out further. |
| for (i = 0; i < 6; i++) |
| { |
| if (extraBytes[i] == 8 || extraBytes[i] == 9 || extraBytes[i] == 18) |
| { |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek found potential type ...skipping back code=%d pos=0x%llx\n", extraBytes[i], pos + 1 + i); |
| #endif |
| url_fseek(s->pb, pos + 1 + i, SEEK_SET); |
| break; |
| } |
| } |
| if (i == 6 && (pad == 8 || pad == 9 || pad == 18)) |
| { |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek found potential type ...skipping back-2 code=%d pos=0x%llx\n", pad, pos + 7 + j); |
| #endif |
| url_fseek(s->pb, pos + 7 + j, SEEK_SET); |
| } |
| } |
| } |
| if (pad) // bad packet |
| continue; |
| |
| size = (extraBytes[0] << 16) + (extraBytes[1] << 8) + extraBytes[2]; |
| pts = (extraBytes[3] << 16) + (extraBytes[4] << 8) + extraBytes[5]; |
| |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek found stream tag type code=%d size=%d pts=%d\n", type, size, pts); |
| #endif |
| // Check to see if the stream type matches |
| if ((type == 8 && s->streams[stream_index]->id == 1) || |
| (type == 9 && s->streams[stream_index]->id == 0)) |
| { |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek found matching stream index!\n"); |
| #endif |
| flags = get_byte(s->pb); |
| // Make sure it's a key frame! |
| if (type == 8 || ((flags >> 4)==1)) |
| { |
| #ifdef DEBUG_SEEK |
| printf("FLV Seek found keyframe!\n"); |
| #endif |
| // Found it! |
| break; |
| } |
| url_fskip(s->pb, size + 3); |
| continue; |
| } |
| url_fskip(s->pb, size + 4); |
| } |
| *pos_arg = pos - 4; // go back the previousTagSize data |
| return pts; |
| } |
| |
| 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; |
| get_buffer(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(;;){ |
| pos = url_ftell(s->pb); |
| url_fskip(s->pb, 4); /* size of previous packet */ |
| type = get_byte(s->pb); |
| size = get_be24(s->pb); |
| dts = get_be24(s->pb); |
| dts |= get_byte(s->pb) << 24; |
| // av_log(s, AV_LOG_DEBUG, "type:%d, size:%d, dts:%d\n", type, size, dts); |
| if (url_feof(s->pb)) |
| return AVERROR_EOF; |
| url_fskip(s->pb, 3); /* stream id, always 0 */ |
| flags = 0; |
| |
| if(size == 0) |
| continue; |
| |
| next= size + url_ftell(s->pb); |
| |
| if (type == FLV_TAG_TYPE_AUDIO) { |
| is_audio=1; |
| flags = get_byte(s->pb); |
| size--; |
| } else if (type == FLV_TAG_TYPE_VIDEO) { |
| is_audio=0; |
| flags = get_byte(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_ERROR, "skipping flv packet: type %d, size %d, flags %d\n", type, size, flags); |
| skip: |
| url_fseek(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_log(s, AV_LOG_DEBUG, "%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 |
| ){ |
| url_fseek(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 |
| // NOTE: Narflex - do not read in the duration here because it requires seeking to the end of |
| // the stream which may not work right for active files (and we can't detect that at this point since |
| // it's not set yet). Besides, this duration isn't needed since it's also discovered when reading packets |
| if(0 && !url_is_streamed(s->pb) && s->duration==AV_NOPTS_VALUE){ |
| int size; |
| const int64_t pos= url_ftell(s->pb); |
| const int64_t fsize= url_fsize(s->pb); |
| url_fseek(s->pb, fsize-4, SEEK_SET); |
| size= get_be32(s->pb); |
| url_fseek(s->pb, fsize-3-size, SEEK_SET); |
| if(size == get_be24(s->pb) + 11){ |
| s->duration= get_be24(s->pb) * (int64_t)AV_TIME_BASE / 1000; |
| } |
| url_fseek(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 = get_byte(s->pb); |
| size--; |
| if (st->codec->codec_id == CODEC_ID_H264) { |
| int32_t cts = (get_be24(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); |
| if (cfg.chan_config > 7) |
| return -1; |
| st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config]; |
| st->codec->sample_rate = cfg.sample_rate; |
| dprintf(s, "mp4a config channels %d sample rate %d\n", |
| st->codec->channels, st->codec->sample_rate); |
| } |
| |
| return AVERROR(EAGAIN); |
| } |
| } |
| |
| /* skip empty data packets */ |
| if (!size) |
| return AVERROR(EAGAIN); |
| |
| 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 |= PKT_FLAG_KEY; |
| |
| return ret; |
| } |
| |
| static int flv_read_close(AVFormatContext *s) |
| { |
| return 0; |
| } |
| |
| AVInputFormat flv_demuxer = { |
| "flv", |
| NULL_IF_CONFIG_SMALL("FLV format"), |
| sizeof(FLVContext), |
| flv_probe, |
| flv_read_header, |
| flv_read_packet, |
| flv_read_close, |
| NULL, |
| flv_read_timestamp, |
| .extensions = "flv", |
| .value = CODEC_ID_FLV1, |
| }; |
