2003-07-10 02:10:59 +03:00
|
|
|
/*
|
2006-10-23 11:57:54 +03:00
|
|
|
* FLV demuxer
|
2003-07-10 02:10:59 +03:00
|
|
|
* Copyright (c) 2003 The FFmpeg Project.
|
|
|
|
*
|
2007-07-05 13:37:29 +03:00
|
|
|
* 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
|
|
|
|
*
|
2006-10-07 18:30:46 +03:00
|
|
|
* This file is part of FFmpeg.
|
|
|
|
*
|
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2003-07-10 02:10:59 +03:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 18:30:46 +03:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2003-07-10 02:10:59 +03:00
|
|
|
*
|
2006-10-07 18:30:46 +03:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2003-07-10 02:10:59 +03:00
|
|
|
* 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
|
2006-10-07 18:30:46 +03:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2006-01-13 00:43:26 +02:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2003-07-10 02:10:59 +03:00
|
|
|
*/
|
|
|
|
#include "avformat.h"
|
2006-12-06 02:23:04 +02:00
|
|
|
#include "flv.h"
|
2003-07-10 02:10:59 +03:00
|
|
|
|
|
|
|
static int flv_probe(AVProbeData *p)
|
|
|
|
{
|
|
|
|
const uint8_t *d;
|
|
|
|
|
|
|
|
d = p->buf;
|
2007-01-23 17:23:41 +02:00
|
|
|
if (d[0] == 'F' && d[1] == 'L' && d[2] == 'V' && d[3] < 5 && d[5]==0) {
|
|
|
|
return AVPROBE_SCORE_MAX;
|
2003-07-10 02:10:59 +03:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-12-12 14:29:33 +02:00
|
|
|
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
|
2008-02-24 02:57:15 +02:00
|
|
|
case FLV_CODECID_PCM:
|
2008-02-24 03:04:00 +02:00
|
|
|
acodec->codec_id = acodec->bits_per_sample == 8 ? CODEC_ID_PCM_S8 :
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
|
|
CODEC_ID_PCM_S16BE;
|
|
|
|
#else
|
|
|
|
CODEC_ID_PCM_S16LE;
|
|
|
|
#endif
|
|
|
|
break;
|
2006-12-12 14:29:33 +02:00
|
|
|
case FLV_CODECID_PCM_LE:
|
|
|
|
acodec->codec_id = acodec->bits_per_sample == 8 ? CODEC_ID_PCM_S8 : CODEC_ID_PCM_S16LE; break;
|
2008-05-27 01:01:41 +03:00
|
|
|
case FLV_CODECID_AAC : acodec->codec_id = CODEC_ID_AAC; break;
|
2006-12-12 14:29:33 +02:00
|
|
|
case FLV_CODECID_ADPCM: acodec->codec_id = CODEC_ID_ADPCM_SWF; break;
|
2007-04-15 16:51:57 +03:00
|
|
|
case FLV_CODECID_MP3 : acodec->codec_id = CODEC_ID_MP3 ; astream->need_parsing = AVSTREAM_PARSE_FULL; break;
|
2006-12-12 14:29:33 +02:00
|
|
|
case FLV_CODECID_NELLYMOSER_8HZ_MONO:
|
|
|
|
acodec->sample_rate = 8000; //in case metadata does not otherwise declare samplerate
|
|
|
|
case FLV_CODECID_NELLYMOSER:
|
2007-10-15 19:26:02 +03:00
|
|
|
acodec->codec_id = CODEC_ID_NELLYMOSER;
|
|
|
|
break;
|
2006-12-12 14:29:33 +02:00
|
|
|
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 ;
|
2007-09-25 22:30:03 +03:00
|
|
|
case FLV_CODECID_VP6A :
|
|
|
|
if(flv_codecid == FLV_CODECID_VP6A)
|
|
|
|
vcodec->codec_id = CODEC_ID_VP6A;
|
2006-12-12 14:29:33 +02:00
|
|
|
if(vcodec->extradata_size != 1) {
|
|
|
|
vcodec->extradata_size = 1;
|
|
|
|
vcodec->extradata = av_malloc(1);
|
|
|
|
}
|
2007-11-21 09:41:00 +02:00
|
|
|
vcodec->extradata[0] = get_byte(s->pb);
|
2006-12-12 14:29:33 +02:00
|
|
|
return 1; // 1 byte body size adjustment for flv_read_packet()
|
2008-05-27 01:01:41 +03:00
|
|
|
case FLV_CODECID_H264:
|
|
|
|
vcodec->codec_id = CODEC_ID_H264;
|
|
|
|
return 3; // not 4, reading packet type will consume one byte
|
2006-12-12 14:29:33 +02:00
|
|
|
default:
|
|
|
|
av_log(s, AV_LOG_INFO, "Unsupported video codec (%x)\n", flv_codecid);
|
|
|
|
vcodec->codec_tag = flv_codecid;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-12-10 19:31:17 +02:00
|
|
|
static int amf_get_string(ByteIOContext *ioc, char *buffer, int buffsize) {
|
2006-12-10 19:32:05 +02:00
|
|
|
int length = get_be16(ioc);
|
2006-12-10 19:31:17 +02:00
|
|
|
if(length >= buffsize) {
|
|
|
|
url_fskip(ioc, length);
|
2006-12-10 19:32:05 +02:00
|
|
|
return -1;
|
2006-12-10 19:31:17 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
get_buffer(ioc, buffer, length);
|
|
|
|
|
|
|
|
buffer[length] = '\0';
|
|
|
|
|
|
|
|
return length;
|
|
|
|
}
|
|
|
|
|
2006-12-12 14:29:33 +02:00
|
|
|
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, unsigned int max_pos, int depth) {
|
|
|
|
AVCodecContext *acodec, *vcodec;
|
|
|
|
ByteIOContext *ioc;
|
|
|
|
AMFDataType amf_type;
|
|
|
|
char str_val[256];
|
|
|
|
double num_val;
|
|
|
|
|
|
|
|
num_val = 0;
|
2007-11-21 09:41:00 +02:00
|
|
|
ioc = s->pb;
|
2006-12-12 14:29:33 +02:00
|
|
|
|
|
|
|
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;
|
2007-01-23 17:38:07 +02:00
|
|
|
// 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;
|
2008-03-20 13:02:40 +02:00
|
|
|
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) {
|
2006-12-12 14:29:33 +02:00
|
|
|
acodec->bits_per_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
|
2007-12-20 13:21:10 +02:00
|
|
|
if (!acodec->sample_rate) {
|
2007-12-20 13:22:39 +02:00
|
|
|
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;
|
|
|
|
}
|
2007-12-20 13:21:10 +02:00
|
|
|
}
|
2006-12-12 14:29:33 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int flv_read_metabody(AVFormatContext *s, unsigned int 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;
|
2007-11-21 09:41:00 +02:00
|
|
|
ioc = s->pb;
|
2006-12-12 14:29:33 +02:00
|
|
|
|
|
|
|
//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;
|
|
|
|
}
|
|
|
|
|
2007-10-31 23:35:50 +02:00
|
|
|
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;
|
2008-05-24 00:47:30 +03:00
|
|
|
av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
|
2007-10-31 23:35:50 +02:00
|
|
|
return st;
|
|
|
|
}
|
|
|
|
|
2003-07-10 02:10:59 +03:00
|
|
|
static int flv_read_header(AVFormatContext *s,
|
|
|
|
AVFormatParameters *ap)
|
|
|
|
{
|
2006-12-10 19:53:01 +02:00
|
|
|
int offset, flags;
|
2003-07-10 02:10:59 +03:00
|
|
|
|
2007-11-21 09:41:00 +02:00
|
|
|
url_fskip(s->pb, 4);
|
|
|
|
flags = get_byte(s->pb);
|
2007-03-07 03:52:08 +02:00
|
|
|
/* 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");
|
|
|
|
}
|
2003-07-10 02:10:59 +03:00
|
|
|
|
2008-04-14 15:24:29 +03:00
|
|
|
if((flags & (FLV_HEADER_FLAG_HASVIDEO|FLV_HEADER_FLAG_HASAUDIO))
|
|
|
|
!= (FLV_HEADER_FLAG_HASVIDEO|FLV_HEADER_FLAG_HASAUDIO))
|
|
|
|
s->ctx_flags |= AVFMTCTX_NOHEADER;
|
|
|
|
|
2006-12-10 19:25:30 +02:00
|
|
|
if(flags & FLV_HEADER_FLAG_HASVIDEO){
|
2007-10-31 23:35:50 +02:00
|
|
|
if(!create_stream(s, 0))
|
2007-07-19 18:21:30 +03:00
|
|
|
return AVERROR(ENOMEM);
|
2006-12-10 19:25:30 +02:00
|
|
|
}
|
|
|
|
if(flags & FLV_HEADER_FLAG_HASAUDIO){
|
2007-10-31 23:35:50 +02:00
|
|
|
if(!create_stream(s, 1))
|
2007-07-19 18:21:30 +03:00
|
|
|
return AVERROR(ENOMEM);
|
2006-12-10 19:25:30 +02:00
|
|
|
}
|
|
|
|
|
2007-11-21 09:41:00 +02:00
|
|
|
offset = get_be32(s->pb);
|
|
|
|
url_fseek(s->pb, offset, SEEK_SET);
|
2003-07-10 02:10:59 +03:00
|
|
|
|
2006-09-17 12:39:49 +03:00
|
|
|
s->start_time = 0;
|
|
|
|
|
2003-07-10 02:10:59 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-05-27 01:01:41 +03:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2003-07-10 02:10:59 +03:00
|
|
|
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
|
|
{
|
2008-04-25 12:08:13 +03:00
|
|
|
int ret, i, type, size, flags, is_audio, next, pos;
|
2008-05-24 00:51:33 +03:00
|
|
|
unsigned dts;
|
2005-02-21 20:05:21 +02:00
|
|
|
AVStream *st = NULL;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2008-05-27 01:01:41 +03:00
|
|
|
retry:
|
2004-04-17 15:04:59 +03:00
|
|
|
for(;;){
|
2007-11-21 09:41:00 +02:00
|
|
|
pos = url_ftell(s->pb);
|
|
|
|
url_fskip(s->pb, 4); /* size of previous packet */
|
|
|
|
type = get_byte(s->pb);
|
|
|
|
size = get_be24(s->pb);
|
2008-05-24 00:51:33 +03:00
|
|
|
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);
|
2007-11-21 09:41:00 +02:00
|
|
|
if (url_feof(s->pb))
|
2007-07-19 18:23:32 +03:00
|
|
|
return AVERROR(EIO);
|
2007-11-21 09:41:00 +02:00
|
|
|
url_fskip(s->pb, 3); /* stream id, always 0 */
|
2003-07-10 02:10:59 +03:00
|
|
|
flags = 0;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2004-04-17 15:04:59 +03:00
|
|
|
if(size == 0)
|
|
|
|
continue;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2007-11-21 09:41:00 +02:00
|
|
|
next= size + url_ftell(s->pb);
|
2005-07-19 17:26:41 +03:00
|
|
|
|
2006-12-06 02:23:04 +02:00
|
|
|
if (type == FLV_TAG_TYPE_AUDIO) {
|
2004-04-17 15:04:59 +03:00
|
|
|
is_audio=1;
|
2007-11-21 09:41:00 +02:00
|
|
|
flags = get_byte(s->pb);
|
2006-12-06 02:23:04 +02:00
|
|
|
} else if (type == FLV_TAG_TYPE_VIDEO) {
|
2004-04-17 15:04:59 +03:00
|
|
|
is_audio=0;
|
2007-11-21 09:41:00 +02:00
|
|
|
flags = get_byte(s->pb);
|
2008-07-31 05:26:40 +03:00
|
|
|
if ((flags & 0xf0) == 0x50) { /* video info / command frame */
|
|
|
|
url_fskip(s->pb, size - 1);
|
|
|
|
continue;
|
|
|
|
}
|
2003-07-10 02:10:59 +03:00
|
|
|
} else {
|
2006-12-12 14:29:33 +02:00
|
|
|
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);
|
2007-11-21 09:41:00 +02:00
|
|
|
url_fseek(s->pb, next, SEEK_SET);
|
2004-04-17 15:04:59 +03:00
|
|
|
continue;
|
2003-07-10 02:10:59 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
/* now find stream */
|
|
|
|
for(i=0;i<s->nb_streams;i++) {
|
|
|
|
st = s->streams[i];
|
2004-04-17 15:04:59 +03:00
|
|
|
if (st->id == is_audio)
|
|
|
|
break;
|
2003-07-10 02:10:59 +03:00
|
|
|
}
|
2004-04-17 15:04:59 +03:00
|
|
|
if(i == s->nb_streams){
|
2006-12-10 19:25:30 +02:00
|
|
|
av_log(NULL, AV_LOG_ERROR, "invalid stream\n");
|
2007-11-01 00:10:34 +02:00
|
|
|
st= create_stream(s, is_audio);
|
2008-04-14 02:47:03 +03:00
|
|
|
s->ctx_flags &= ~AVFMTCTX_NOHEADER;
|
2004-03-08 04:38:43 +02:00
|
|
|
}
|
2005-03-17 03:25:01 +02:00
|
|
|
// av_log(NULL, AV_LOG_DEBUG, "%d %X %d \n", is_audio, flags, st->discard);
|
2006-12-06 02:23:04 +02:00
|
|
|
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))
|
2005-03-17 03:25:01 +02:00
|
|
|
|| st->discard >= AVDISCARD_ALL
|
|
|
|
){
|
2007-11-21 09:41:00 +02:00
|
|
|
url_fseek(s->pb, next, SEEK_SET);
|
2005-01-22 15:36:02 +02:00
|
|
|
continue;
|
|
|
|
}
|
2006-12-06 02:23:04 +02:00
|
|
|
if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY)
|
2008-05-24 00:51:33 +03:00
|
|
|
av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME);
|
2004-04-17 15:04:59 +03:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2006-12-10 19:53:01 +02:00
|
|
|
// if not streamed and no duration from metadata then seek to end to find the duration from the timestamps
|
2007-11-21 09:41:00 +02:00
|
|
|
if(!url_is_streamed(s->pb) && s->duration==AV_NOPTS_VALUE){
|
2006-12-10 19:53:01 +02:00
|
|
|
int size;
|
2007-11-21 09:41:00 +02:00
|
|
|
const int pos= url_ftell(s->pb);
|
|
|
|
const int 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;
|
2006-12-10 19:53:01 +02:00
|
|
|
}
|
2007-11-21 09:41:00 +02:00
|
|
|
url_fseek(s->pb, pos, SEEK_SET);
|
2006-12-10 19:53:01 +02:00
|
|
|
}
|
|
|
|
|
2004-04-17 15:04:59 +03:00
|
|
|
if(is_audio){
|
2006-12-12 14:29:33 +02:00
|
|
|
if(!st->codec->sample_rate || !st->codec->bits_per_sample || (!st->codec->codec_id && !st->codec->codec_tag)) {
|
2006-12-06 02:23:04 +02:00
|
|
|
st->codec->channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
|
|
|
|
if((flags & FLV_AUDIO_CODECID_MASK) == FLV_CODECID_NELLYMOSER_8HZ_MONO)
|
2005-07-18 01:24:36 +03:00
|
|
|
st->codec->sample_rate= 8000;
|
2004-04-17 15:04:59 +03:00
|
|
|
else
|
2006-12-06 02:23:04 +02:00
|
|
|
st->codec->sample_rate = (44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >> FLV_AUDIO_SAMPLERATE_OFFSET) >> 3);
|
|
|
|
st->codec->bits_per_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
|
2006-12-12 14:29:33 +02:00
|
|
|
flv_set_audio_codec(s, st, flags & FLV_AUDIO_CODECID_MASK);
|
2004-04-17 15:04:59 +03:00
|
|
|
}
|
|
|
|
}else{
|
2006-12-12 14:29:33 +02:00
|
|
|
size -= flv_set_video_codec(s, st, flags & FLV_VIDEO_CODECID_MASK);
|
2004-03-10 05:45:14 +02:00
|
|
|
}
|
|
|
|
|
2008-05-27 01:01:41 +03:00
|
|
|
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) {
|
|
|
|
// cts offset ignored because it might to be signed
|
|
|
|
// and would cause pts < dts
|
|
|
|
get_be24(s->pb);
|
|
|
|
}
|
|
|
|
if (type == 0) {
|
|
|
|
if ((ret = flv_get_extradata(s, st, size - 1)) < 0)
|
|
|
|
return ret;
|
|
|
|
goto retry;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-11-21 09:41:00 +02:00
|
|
|
ret= av_get_packet(s->pb, pkt, size - 1);
|
2003-07-10 02:10:59 +03:00
|
|
|
if (ret <= 0) {
|
2007-07-19 18:23:32 +03:00
|
|
|
return AVERROR(EIO);
|
2003-07-10 02:10:59 +03:00
|
|
|
}
|
|
|
|
/* note: we need to modify the packet size here to handle the last
|
|
|
|
packet */
|
|
|
|
pkt->size = ret;
|
2008-05-24 00:51:33 +03:00
|
|
|
pkt->dts = dts;
|
2003-07-10 02:10:59 +03:00
|
|
|
pkt->stream_index = st->index;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2006-12-06 02:23:04 +02:00
|
|
|
if (is_audio || ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY))
|
2005-12-22 03:10:11 +02:00
|
|
|
pkt->flags |= PKT_FLAG_KEY;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2003-07-10 02:10:59 +03:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2006-07-10 02:40:53 +03:00
|
|
|
AVInputFormat flv_demuxer = {
|
2003-07-10 02:10:59 +03:00
|
|
|
"flv",
|
2008-06-03 19:20:54 +03:00
|
|
|
NULL_IF_CONFIG_SMALL("FLV format"),
|
2007-09-25 22:25:59 +03:00
|
|
|
0,
|
2003-07-10 02:10:59 +03:00
|
|
|
flv_probe,
|
|
|
|
flv_read_header,
|
|
|
|
flv_read_packet,
|
|
|
|
.extensions = "flv",
|
|
|
|
.value = CODEC_ID_FLV1,
|
|
|
|
};
|