2003-07-09 23:10:59 +00:00
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/*
|
2006-10-23 08:57:54 +00:00
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* FLV demuxer
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2011-03-18 17:35:10 +00:00
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* Copyright (c) 2003 The Libav Project
|
2003-07-09 23:10:59 +00:00
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*
|
2007-07-05 10:37:29 +00:00
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* This demuxer will generate a 1 byte extradata for VP6F content.
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|
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* It is composed of:
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|
|
* - upper 4bits: difference between encoded width and visible width
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* - lower 4bits: difference between encoded height and visible height
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*
|
2011-03-18 17:35:10 +00:00
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* This file is part of Libav.
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2006-10-07 15:30:46 +00:00
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*
|
2011-03-18 17:35:10 +00:00
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* Libav is free software; you can redistribute it and/or
|
2003-07-09 23:10:59 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
|
2003-07-09 23:10:59 +00:00
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*
|
2011-03-18 17:35:10 +00:00
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* Libav is distributed in the hope that it will be useful,
|
2003-07-09 23:10:59 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 17:35:10 +00:00
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* License along with Libav; if not, write to the Free Software
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2006-01-12 22:43:26 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2003-07-09 23:10:59 +00:00
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*/
|
2009-02-21 23:54:50 +00:00
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|
2009-07-06 21:54:37 +00:00
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|
#include "libavutil/avstring.h"
|
2011-05-22 10:46:29 +00:00
|
|
|
#include "libavutil/dict.h"
|
2011-11-27 14:04:16 +00:00
|
|
|
#include "libavutil/intfloat.h"
|
2011-07-04 22:42:31 +00:00
|
|
|
#include "libavutil/mathematics.h"
|
2009-06-24 22:10:53 +00:00
|
|
|
#include "libavcodec/bytestream.h"
|
2009-02-21 23:54:50 +00:00
|
|
|
#include "libavcodec/mpeg4audio.h"
|
2003-07-09 23:10:59 +00:00
|
|
|
#include "avformat.h"
|
2011-11-29 18:28:15 +00:00
|
|
|
#include "internal.h"
|
2011-03-14 19:38:59 +00:00
|
|
|
#include "avio_internal.h"
|
2006-12-06 00:23:04 +00:00
|
|
|
#include "flv.h"
|
2003-07-09 23:10:59 +00:00
|
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|
|
2011-03-18 07:26:51 +00:00
|
|
|
#define KEYFRAMES_TAG "keyframes"
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|
|
#define KEYFRAMES_TIMESTAMP_TAG "times"
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|
|
|
#define KEYFRAMES_BYTEOFFSET_TAG "filepositions"
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|
|
|
2008-11-16 02:56:34 +00:00
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|
|
typedef struct {
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|
|
|
int wrong_dts; ///< wrong dts due to negative cts
|
2011-12-15 14:29:55 +00:00
|
|
|
uint8_t *new_extradata[2];
|
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|
|
int new_extradata_size[2];
|
2011-12-16 10:48:24 +00:00
|
|
|
int last_sample_rate;
|
|
|
|
int last_channels;
|
2008-11-16 02:56:34 +00:00
|
|
|
} FLVContext;
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|
|
|
2003-07-09 23:10:59 +00:00
|
|
|
static int flv_probe(AVProbeData *p)
|
|
|
|
{
|
|
|
|
const uint8_t *d;
|
|
|
|
|
|
|
|
d = p->buf;
|
2009-09-15 14:56:09 +00:00
|
|
|
if (d[0] == 'F' && d[1] == 'L' && d[2] == 'V' && d[3] < 5 && d[5]==0 && AV_RB32(d+5)>8) {
|
2007-01-23 15:23:41 +00:00
|
|
|
return AVPROBE_SCORE_MAX;
|
2003-07-09 23:10:59 +00:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-12-16 10:48:24 +00:00
|
|
|
static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, AVCodecContext *acodec, int flv_codecid) {
|
2006-12-12 12:29:33 +00:00
|
|
|
switch(flv_codecid) {
|
|
|
|
//no distinction between S16 and S8 PCM codec flags
|
2008-02-24 00:57:15 +00:00
|
|
|
case FLV_CODECID_PCM:
|
2009-12-14 03:30:25 +00:00
|
|
|
acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 :
|
2009-07-26 12:20:04 +00:00
|
|
|
#if HAVE_BIGENDIAN
|
2008-02-24 01:04:00 +00:00
|
|
|
CODEC_ID_PCM_S16BE;
|
|
|
|
#else
|
|
|
|
CODEC_ID_PCM_S16LE;
|
|
|
|
#endif
|
|
|
|
break;
|
2006-12-12 12:29:33 +00:00
|
|
|
case FLV_CODECID_PCM_LE:
|
2009-12-14 03:30:25 +00:00
|
|
|
acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 : CODEC_ID_PCM_S16LE; break;
|
2008-05-26 22:01:41 +00:00
|
|
|
case FLV_CODECID_AAC : acodec->codec_id = CODEC_ID_AAC; break;
|
2006-12-12 12:29:33 +00:00
|
|
|
case FLV_CODECID_ADPCM: acodec->codec_id = CODEC_ID_ADPCM_SWF; break;
|
2008-10-24 18:36:26 +00:00
|
|
|
case FLV_CODECID_SPEEX:
|
|
|
|
acodec->codec_id = CODEC_ID_SPEEX;
|
|
|
|
acodec->sample_rate = 16000;
|
|
|
|
break;
|
2007-04-15 13:51:57 +00:00
|
|
|
case FLV_CODECID_MP3 : acodec->codec_id = CODEC_ID_MP3 ; astream->need_parsing = AVSTREAM_PARSE_FULL; break;
|
2008-10-18 12:08:55 +00:00
|
|
|
case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
|
2006-12-12 12:29:33 +00:00
|
|
|
acodec->sample_rate = 8000; //in case metadata does not otherwise declare samplerate
|
2010-11-03 20:12:07 +00:00
|
|
|
acodec->codec_id = CODEC_ID_NELLYMOSER;
|
|
|
|
break;
|
|
|
|
case FLV_CODECID_NELLYMOSER_16KHZ_MONO:
|
|
|
|
acodec->sample_rate = 16000;
|
|
|
|
acodec->codec_id = CODEC_ID_NELLYMOSER;
|
|
|
|
break;
|
2006-12-12 12:29:33 +00:00
|
|
|
case FLV_CODECID_NELLYMOSER:
|
2007-10-15 16:26:02 +00:00
|
|
|
acodec->codec_id = CODEC_ID_NELLYMOSER;
|
|
|
|
break;
|
2006-12-12 12:29:33 +00:00
|
|
|
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;
|
2009-11-20 19:16:42 +00:00
|
|
|
case FLV_CODECID_SCREEN2: vcodec->codec_id = CODEC_ID_FLASHSV2; break;
|
2006-12-12 12:29:33 +00:00
|
|
|
case FLV_CODECID_VP6 : vcodec->codec_id = CODEC_ID_VP6F ;
|
2007-09-25 19:30:03 +00:00
|
|
|
case FLV_CODECID_VP6A :
|
|
|
|
if(flv_codecid == FLV_CODECID_VP6A)
|
|
|
|
vcodec->codec_id = CODEC_ID_VP6A;
|
2006-12-12 12:29:33 +00:00
|
|
|
if(vcodec->extradata_size != 1) {
|
|
|
|
vcodec->extradata_size = 1;
|
|
|
|
vcodec->extradata = av_malloc(1);
|
|
|
|
}
|
2011-02-21 15:43:01 +00:00
|
|
|
vcodec->extradata[0] = avio_r8(s->pb);
|
2006-12-12 12:29:33 +00:00
|
|
|
return 1; // 1 byte body size adjustment for flv_read_packet()
|
2008-05-26 22:01:41 +00:00
|
|
|
case FLV_CODECID_H264:
|
|
|
|
vcodec->codec_id = CODEC_ID_H264;
|
|
|
|
return 3; // not 4, reading packet type will consume one byte
|
2006-12-12 12:29:33 +00:00
|
|
|
default:
|
|
|
|
av_log(s, AV_LOG_INFO, "Unsupported video codec (%x)\n", flv_codecid);
|
|
|
|
vcodec->codec_tag = flv_codecid;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-02-20 10:04:12 +00:00
|
|
|
static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize) {
|
2011-02-21 15:43:01 +00:00
|
|
|
int length = avio_rb16(ioc);
|
2009-12-14 15:59:19 +00:00
|
|
|
if(length >= buffsize) {
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(ioc, length);
|
2009-12-14 15:59:19 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2006-12-10 17:31:17 +00:00
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
avio_read(ioc, buffer, length);
|
2006-12-10 17:31:17 +00:00
|
|
|
|
2009-12-14 15:59:19 +00:00
|
|
|
buffer[length] = '\0';
|
2006-12-10 17:31:17 +00:00
|
|
|
|
2009-12-14 15:59:19 +00:00
|
|
|
return length;
|
2006-12-10 17:31:17 +00:00
|
|
|
}
|
|
|
|
|
2011-03-18 07:26:51 +00:00
|
|
|
static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, AVStream *vstream, int64_t max_pos) {
|
|
|
|
unsigned int arraylen = 0, timeslen = 0, fileposlen = 0, i;
|
|
|
|
double num_val;
|
|
|
|
char str_val[256];
|
|
|
|
int64_t *times = NULL;
|
|
|
|
int64_t *filepositions = NULL;
|
2011-04-12 13:37:54 +00:00
|
|
|
int ret = AVERROR(ENOSYS);
|
2011-04-08 09:20:45 +00:00
|
|
|
int64_t initial_pos = avio_tell(ioc);
|
2011-09-21 13:51:13 +00:00
|
|
|
AVDictionaryEntry *creator = av_dict_get(s->metadata, "metadatacreator",
|
|
|
|
NULL, 0);
|
|
|
|
|
|
|
|
if (creator && !strcmp(creator->value, "MEGA")) {
|
|
|
|
/* Files with this metadatacreator tag seem to have filepositions
|
|
|
|
* pointing at the 4 trailer bytes of the previous packet,
|
|
|
|
* which isn't the norm (nor what we expect here, nor what
|
|
|
|
* jwplayer + lighttpd expect, nor what flvtool2 produces).
|
|
|
|
* Just ignore the index in this case, instead of risking trying
|
|
|
|
* to adjust it to something that might or might not work. */
|
|
|
|
return 0;
|
|
|
|
}
|
2011-03-18 07:26:51 +00:00
|
|
|
|
|
|
|
while (avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
|
|
|
|
int64_t* current_array;
|
|
|
|
|
|
|
|
// Expect array object in context
|
|
|
|
if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY)
|
|
|
|
break;
|
|
|
|
|
|
|
|
arraylen = avio_rb32(ioc);
|
2011-09-24 15:57:31 +00:00
|
|
|
if (arraylen >> 28)
|
|
|
|
break;
|
|
|
|
|
2011-03-18 07:26:51 +00:00
|
|
|
/*
|
|
|
|
* Expect only 'times' or 'filepositions' sub-arrays in other case refuse to use such metadata
|
|
|
|
* for indexing
|
|
|
|
*/
|
|
|
|
if (!strcmp(KEYFRAMES_TIMESTAMP_TAG, str_val) && !times) {
|
|
|
|
if (!(times = av_mallocz(sizeof(*times) * arraylen))) {
|
|
|
|
ret = AVERROR(ENOMEM);
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
timeslen = arraylen;
|
|
|
|
current_array = times;
|
|
|
|
} else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) && !filepositions) {
|
|
|
|
if (!(filepositions = av_mallocz(sizeof(*filepositions) * arraylen))) {
|
|
|
|
ret = AVERROR(ENOMEM);
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
fileposlen = arraylen;
|
|
|
|
current_array = filepositions;
|
|
|
|
} else // unexpected metatag inside keyframes, will not use such metadata for indexing
|
|
|
|
break;
|
|
|
|
|
|
|
|
for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
|
|
|
|
if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER)
|
|
|
|
goto finish;
|
2011-11-27 14:04:16 +00:00
|
|
|
num_val = av_int2double(avio_rb64(ioc));
|
2011-03-18 07:26:51 +00:00
|
|
|
current_array[i] = num_val;
|
|
|
|
}
|
2011-04-12 13:37:54 +00:00
|
|
|
if (times && filepositions) {
|
|
|
|
// All done, exiting at a position allowing amf_parse_object
|
|
|
|
// to finish parsing the object
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
}
|
2011-03-18 07:26:51 +00:00
|
|
|
}
|
|
|
|
|
2011-09-24 14:16:38 +00:00
|
|
|
if (!ret && timeslen == fileposlen)
|
|
|
|
for (i = 0; i < fileposlen; i++)
|
2011-03-18 07:26:51 +00:00
|
|
|
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);
|
2011-04-12 13:37:54 +00:00
|
|
|
// If we got unexpected data, but successfully reset back to
|
|
|
|
// the start pos, the caller can continue parsing
|
|
|
|
if (ret < 0 && avio_seek(ioc, initial_pos, SEEK_SET) > 0)
|
|
|
|
return 0;
|
2011-03-18 07:26:51 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2008-10-24 16:46:43 +00:00
|
|
|
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) {
|
2006-12-12 12:29:33 +00:00
|
|
|
AVCodecContext *acodec, *vcodec;
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *ioc;
|
2006-12-12 12:29:33 +00:00
|
|
|
AMFDataType amf_type;
|
2009-12-14 15:59:19 +00:00
|
|
|
char str_val[256];
|
2006-12-12 12:29:33 +00:00
|
|
|
double num_val;
|
|
|
|
|
|
|
|
num_val = 0;
|
2007-11-21 07:41:00 +00:00
|
|
|
ioc = s->pb;
|
2006-12-12 12:29:33 +00:00
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
amf_type = avio_r8(ioc);
|
2006-12-12 12:29:33 +00:00
|
|
|
|
|
|
|
switch(amf_type) {
|
|
|
|
case AMF_DATA_TYPE_NUMBER:
|
2011-11-27 14:04:16 +00:00
|
|
|
num_val = av_int2double(avio_rb64(ioc)); break;
|
2006-12-12 12:29:33 +00:00
|
|
|
case AMF_DATA_TYPE_BOOL:
|
2011-02-21 15:43:01 +00:00
|
|
|
num_val = avio_r8(ioc); break;
|
2006-12-12 12:29:33 +00:00
|
|
|
case AMF_DATA_TYPE_STRING:
|
2009-12-14 15:59:19 +00:00
|
|
|
if(amf_get_string(ioc, str_val, sizeof(str_val)) < 0)
|
2006-12-12 12:29:33 +00:00
|
|
|
return -1;
|
|
|
|
break;
|
|
|
|
case AMF_DATA_TYPE_OBJECT: {
|
|
|
|
unsigned int keylen;
|
|
|
|
|
2011-10-19 16:41:02 +00:00
|
|
|
if ((vstream || astream) && key && !strcmp(KEYFRAMES_TAG, key) && depth == 1)
|
|
|
|
if (parse_keyframes_index(s, ioc, vstream ? vstream : astream,
|
|
|
|
max_pos) < 0)
|
2011-03-18 07:26:51 +00:00
|
|
|
return -1;
|
|
|
|
|
2011-03-03 19:11:45 +00:00
|
|
|
while(avio_tell(ioc) < max_pos - 2 && (keylen = avio_rb16(ioc))) {
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(ioc, keylen); //skip key string
|
2006-12-12 12:29:33 +00:00
|
|
|
if(amf_parse_object(s, NULL, NULL, NULL, max_pos, depth + 1) < 0)
|
|
|
|
return -1; //if we couldn't skip, bomb out.
|
|
|
|
}
|
2011-02-21 15:43:01 +00:00
|
|
|
if(avio_r8(ioc) != AMF_END_OF_OBJECT)
|
2006-12-12 12:29:33 +00:00
|
|
|
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:
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(ioc, 4); //skip 32-bit max array index
|
2011-03-03 19:11:45 +00:00
|
|
|
while(avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
|
2006-12-12 12:29:33 +00:00
|
|
|
//this is the only case in which we would want a nested parse to not skip over the object
|
2009-12-14 15:59:19 +00:00
|
|
|
if(amf_parse_object(s, astream, vstream, str_val, max_pos, depth + 1) < 0)
|
2006-12-12 12:29:33 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2011-02-21 15:43:01 +00:00
|
|
|
if(avio_r8(ioc) != AMF_END_OF_OBJECT)
|
2006-12-12 12:29:33 +00:00
|
|
|
return -1;
|
|
|
|
break;
|
|
|
|
case AMF_DATA_TYPE_ARRAY: {
|
|
|
|
unsigned int arraylen, i;
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
arraylen = avio_rb32(ioc);
|
2011-03-03 19:11:45 +00:00
|
|
|
for(i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
|
2006-12-12 12:29:33 +00:00
|
|
|
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:
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(ioc, 8 + 2); //timestamp (double) and UTC offset (int16)
|
2006-12-12 12:29:33 +00:00
|
|
|
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;
|
|
|
|
|
2011-10-11 20:56:39 +00:00
|
|
|
if (amf_type == AMF_DATA_TYPE_NUMBER) {
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2011-10-11 21:03:20 +00:00
|
|
|
if (!strcmp(key, "duration") ||
|
|
|
|
!strcmp(key, "filesize") ||
|
|
|
|
!strcmp(key, "width") ||
|
|
|
|
!strcmp(key, "height") ||
|
|
|
|
!strcmp(key, "videodatarate") ||
|
|
|
|
!strcmp(key, "framerate") ||
|
|
|
|
!strcmp(key, "videocodecid") ||
|
|
|
|
!strcmp(key, "audiodatarate") ||
|
|
|
|
!strcmp(key, "audiosamplerate") ||
|
|
|
|
!strcmp(key, "audiosamplesize") ||
|
|
|
|
!strcmp(key, "stereo") ||
|
|
|
|
!strcmp(key, "audiocodecid"))
|
|
|
|
return 0;
|
|
|
|
|
2006-12-12 12:29:33 +00:00
|
|
|
if(amf_type == AMF_DATA_TYPE_BOOL) {
|
2009-12-14 15:59:19 +00:00
|
|
|
av_strlcpy(str_val, num_val > 0 ? "true" : "false", sizeof(str_val));
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&s->metadata, key, str_val, 0);
|
2006-12-12 12:29:33 +00:00
|
|
|
} else if(amf_type == AMF_DATA_TYPE_NUMBER) {
|
2009-12-14 15:59:19 +00:00
|
|
|
snprintf(str_val, sizeof(str_val), "%.f", num_val);
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&s->metadata, key, str_val, 0);
|
2009-07-06 21:54:37 +00:00
|
|
|
} else if (amf_type == AMF_DATA_TYPE_STRING)
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&s->metadata, key, str_val, 0);
|
2006-12-12 12:29:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-10-24 16:46:43 +00:00
|
|
|
static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) {
|
2006-12-12 12:29:33 +00:00
|
|
|
AMFDataType type;
|
|
|
|
AVStream *stream, *astream, *vstream;
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *ioc;
|
2009-04-17 17:42:41 +00:00
|
|
|
int i;
|
2009-12-14 15:59:19 +00:00
|
|
|
char buffer[11]; //only needs to hold the string "onMetaData". Anything longer is something we don't want.
|
2006-12-12 12:29:33 +00:00
|
|
|
|
|
|
|
astream = NULL;
|
|
|
|
vstream = NULL;
|
2007-11-21 07:41:00 +00:00
|
|
|
ioc = s->pb;
|
2006-12-12 12:29:33 +00:00
|
|
|
|
|
|
|
//first object needs to be "onMetaData" string
|
2011-02-21 15:43:01 +00:00
|
|
|
type = avio_r8(ioc);
|
2009-12-14 15:59:19 +00:00
|
|
|
if(type != AMF_DATA_TYPE_STRING || amf_get_string(ioc, buffer, sizeof(buffer)) < 0 || strcmp(buffer, "onMetaData"))
|
2006-12-12 12:29:33 +00:00
|
|
|
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];
|
2010-03-30 23:30:55 +00:00
|
|
|
if (stream->codec->codec_type == AVMEDIA_TYPE_AUDIO) astream = stream;
|
|
|
|
else if(stream->codec->codec_type == AVMEDIA_TYPE_VIDEO) vstream = stream;
|
2006-12-12 12:29:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
//parse the second object (we want a mixed array)
|
2009-12-14 15:59:19 +00:00
|
|
|
if(amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0)
|
2006-12-12 12:29:33 +00:00
|
|
|
return -1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-10-31 21:35:50 +00:00
|
|
|
static AVStream *create_stream(AVFormatContext *s, int is_audio){
|
2011-06-18 09:43:24 +00:00
|
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
2007-10-31 21:35:50 +00:00
|
|
|
if (!st)
|
|
|
|
return NULL;
|
2011-06-18 09:43:24 +00:00
|
|
|
st->id = is_audio;
|
2010-03-30 23:30:55 +00:00
|
|
|
st->codec->codec_type = is_audio ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
|
2011-11-29 18:28:15 +00:00
|
|
|
avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
|
2007-10-31 21:35:50 +00:00
|
|
|
return st;
|
|
|
|
}
|
|
|
|
|
2012-01-12 12:20:36 +00:00
|
|
|
static int flv_read_header(AVFormatContext *s)
|
2003-07-09 23:10:59 +00:00
|
|
|
{
|
2006-12-10 17:53:01 +00:00
|
|
|
int offset, flags;
|
2003-07-09 23:10:59 +00:00
|
|
|
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(s->pb, 4);
|
2011-02-21 15:43:01 +00:00
|
|
|
flags = avio_r8(s->pb);
|
2007-03-07 01:52:08 +00:00
|
|
|
/* 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");
|
|
|
|
}
|
2003-07-09 23:10:59 +00:00
|
|
|
|
2008-04-14 12:24:29 +00:00
|
|
|
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 17:25:30 +00:00
|
|
|
if(flags & FLV_HEADER_FLAG_HASVIDEO){
|
2007-10-31 21:35:50 +00:00
|
|
|
if(!create_stream(s, 0))
|
2007-07-19 15:21:30 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2006-12-10 17:25:30 +00:00
|
|
|
}
|
|
|
|
if(flags & FLV_HEADER_FLAG_HASAUDIO){
|
2007-10-31 21:35:50 +00:00
|
|
|
if(!create_stream(s, 1))
|
2007-07-19 15:21:30 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2006-12-10 17:25:30 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
offset = avio_rb32(s->pb);
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, offset, SEEK_SET);
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(s->pb, 4);
|
2003-07-09 23:10:59 +00:00
|
|
|
|
2006-09-17 09:39:49 +00:00
|
|
|
s->start_time = 0;
|
|
|
|
|
2003-07-09 23:10:59 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-12-15 14:29:55 +00:00
|
|
|
static int flv_read_close(AVFormatContext *s)
|
|
|
|
{
|
|
|
|
FLVContext *flv = s->priv_data;
|
|
|
|
av_freep(&flv->new_extradata[0]);
|
|
|
|
av_freep(&flv->new_extradata[1]);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-05-26 22:01:41 +00:00
|
|
|
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;
|
2011-02-21 15:43:01 +00:00
|
|
|
avio_read(s->pb, st->codec->extradata, st->codec->extradata_size);
|
2008-05-26 22:01:41 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-12-15 14:29:55 +00:00
|
|
|
static int flv_queue_extradata(FLVContext *flv, AVIOContext *pb, int stream,
|
|
|
|
int size)
|
|
|
|
{
|
|
|
|
av_free(flv->new_extradata[stream]);
|
|
|
|
flv->new_extradata[stream] = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (!flv->new_extradata[stream])
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
flv->new_extradata_size[stream] = size;
|
|
|
|
avio_read(pb, flv->new_extradata[stream], size);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2003-07-09 23:10:59 +00:00
|
|
|
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
|
|
{
|
2008-11-16 02:56:34 +00:00
|
|
|
FLVContext *flv = s->priv_data;
|
2008-10-24 16:46:43 +00:00
|
|
|
int ret, i, type, size, flags, is_audio;
|
|
|
|
int64_t next, pos;
|
2008-11-16 02:56:34 +00:00
|
|
|
int64_t dts, pts = AV_NOPTS_VALUE;
|
2011-12-30 20:08:02 +00:00
|
|
|
int sample_rate = 0, channels = 0;
|
2005-02-21 18:05:21 +00:00
|
|
|
AVStream *st = NULL;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-03-15 08:14:38 +00:00
|
|
|
for(;;avio_skip(s->pb, 4)){ /* pkt size is repeated at end. skip it */
|
2011-03-03 19:11:45 +00:00
|
|
|
pos = avio_tell(s->pb);
|
2011-02-21 15:43:01 +00:00
|
|
|
type = avio_r8(s->pb);
|
|
|
|
size = avio_rb24(s->pb);
|
|
|
|
dts = avio_rb24(s->pb);
|
|
|
|
dts |= avio_r8(s->pb) << 24;
|
2011-05-17 19:49:42 +00:00
|
|
|
av_dlog(s, "type:%d, size:%d, dts:%"PRId64"\n", type, size, dts);
|
2011-03-07 20:50:25 +00:00
|
|
|
if (s->pb->eof_reached)
|
2009-02-19 12:19:55 +00:00
|
|
|
return AVERROR_EOF;
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(s->pb, 3); /* stream id, always 0 */
|
2003-07-09 23:10:59 +00:00
|
|
|
flags = 0;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2004-04-17 12:04:59 +00:00
|
|
|
if(size == 0)
|
|
|
|
continue;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-03-03 19:11:45 +00:00
|
|
|
next= size + avio_tell(s->pb);
|
2005-07-19 14:26:41 +00:00
|
|
|
|
2006-12-06 00:23:04 +00:00
|
|
|
if (type == FLV_TAG_TYPE_AUDIO) {
|
2004-04-17 12:04:59 +00:00
|
|
|
is_audio=1;
|
2011-02-21 15:43:01 +00:00
|
|
|
flags = avio_r8(s->pb);
|
2008-08-29 22:03:18 +00:00
|
|
|
size--;
|
2006-12-06 00:23:04 +00:00
|
|
|
} else if (type == FLV_TAG_TYPE_VIDEO) {
|
2004-04-17 12:04:59 +00:00
|
|
|
is_audio=0;
|
2011-02-21 15:43:01 +00:00
|
|
|
flags = avio_r8(s->pb);
|
2008-08-29 22:03:18 +00:00
|
|
|
size--;
|
2008-08-29 22:07:01 +00:00
|
|
|
if ((flags & 0xf0) == 0x50) /* video info / command frame */
|
|
|
|
goto skip;
|
2003-07-09 23:10:59 +00:00
|
|
|
} else {
|
2009-07-06 21:49:33 +00:00
|
|
|
if (type == FLV_TAG_TYPE_META && size > 13+1+4)
|
2006-12-12 12:29:33 +00:00
|
|
|
flv_read_metabody(s, next);
|
|
|
|
else /* skip packet */
|
2009-06-16 23:14:59 +00:00
|
|
|
av_log(s, AV_LOG_DEBUG, "skipping flv packet: type %d, size %d, flags %d\n", type, size, flags);
|
2008-08-29 22:07:01 +00:00
|
|
|
skip:
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, next, SEEK_SET);
|
2009-03-03 20:24:17 +00:00
|
|
|
continue;
|
2003-07-09 23:10:59 +00:00
|
|
|
}
|
|
|
|
|
2008-08-29 22:10:34 +00:00
|
|
|
/* skip empty data packets */
|
|
|
|
if (!size)
|
|
|
|
continue;
|
|
|
|
|
2003-07-09 23:10:59 +00:00
|
|
|
/* now find stream */
|
|
|
|
for(i=0;i<s->nb_streams;i++) {
|
|
|
|
st = s->streams[i];
|
2004-04-17 12:04:59 +00:00
|
|
|
if (st->id == is_audio)
|
|
|
|
break;
|
2003-07-09 23:10:59 +00:00
|
|
|
}
|
2004-04-17 12:04:59 +00:00
|
|
|
if(i == s->nb_streams){
|
2009-02-16 16:09:34 +00:00
|
|
|
av_log(s, AV_LOG_ERROR, "invalid stream\n");
|
2007-10-31 22:10:34 +00:00
|
|
|
st= create_stream(s, is_audio);
|
2008-04-13 23:47:03 +00:00
|
|
|
s->ctx_flags &= ~AVFMTCTX_NOHEADER;
|
2004-03-08 02:38:43 +00:00
|
|
|
}
|
2011-05-17 19:49:42 +00:00
|
|
|
av_dlog(s, "%d %X %d \n", is_audio, flags, st->discard);
|
2006-12-06 00:23:04 +00:00
|
|
|
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 01:25:01 +00:00
|
|
|
|| st->discard >= AVDISCARD_ALL
|
|
|
|
){
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, next, SEEK_SET);
|
2009-03-03 20:24:17 +00:00
|
|
|
continue;
|
2005-01-22 13:36:02 +00:00
|
|
|
}
|
2006-12-06 00:23:04 +00:00
|
|
|
if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY)
|
2008-05-23 21:51:33 +00:00
|
|
|
av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME);
|
2004-04-17 12:04:59 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2006-12-10 17:53:01 +00:00
|
|
|
// if not streamed and no duration from metadata then seek to end to find the duration from the timestamps
|
2011-03-05 20:06:46 +00:00
|
|
|
if(s->pb->seekable && (!s->duration || s->duration==AV_NOPTS_VALUE)){
|
2006-12-10 17:53:01 +00:00
|
|
|
int size;
|
2011-03-03 19:11:45 +00:00
|
|
|
const int64_t pos= avio_tell(s->pb);
|
2011-03-04 18:57:36 +00:00
|
|
|
const int64_t fsize= avio_size(s->pb);
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, fsize-4, SEEK_SET);
|
2011-02-21 15:43:01 +00:00
|
|
|
size= avio_rb32(s->pb);
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, fsize-3-size, SEEK_SET);
|
2011-02-21 15:43:01 +00:00
|
|
|
if(size == avio_rb24(s->pb) + 11){
|
|
|
|
uint32_t ts = avio_rb24(s->pb);
|
|
|
|
ts |= avio_r8(s->pb) << 24;
|
2009-09-07 10:49:51 +00:00
|
|
|
s->duration = ts * (int64_t)AV_TIME_BASE / 1000;
|
2006-12-10 17:53:01 +00:00
|
|
|
}
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
2006-12-10 17:53:01 +00:00
|
|
|
}
|
|
|
|
|
2004-04-17 12:04:59 +00:00
|
|
|
if(is_audio){
|
2011-12-16 10:48:24 +00:00
|
|
|
int bits_per_coded_sample;
|
|
|
|
channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
|
|
|
|
sample_rate = (44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >> FLV_AUDIO_SAMPLERATE_OFFSET) >> 3);
|
|
|
|
bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
|
2008-12-21 20:56:30 +00:00
|
|
|
if(!st->codec->channels || !st->codec->sample_rate || !st->codec->bits_per_coded_sample) {
|
2011-12-16 10:48:24 +00:00
|
|
|
st->codec->channels = channels;
|
|
|
|
st->codec->sample_rate = sample_rate;
|
|
|
|
st->codec->bits_per_coded_sample = bits_per_coded_sample;
|
2008-12-21 20:56:30 +00:00
|
|
|
}
|
|
|
|
if(!st->codec->codec_id){
|
2011-12-16 10:48:24 +00:00
|
|
|
flv_set_audio_codec(s, st, st->codec, flags & FLV_AUDIO_CODECID_MASK);
|
|
|
|
flv->last_sample_rate = st->codec->sample_rate;
|
|
|
|
flv->last_channels = st->codec->channels;
|
|
|
|
} else {
|
|
|
|
AVCodecContext ctx;
|
|
|
|
ctx.sample_rate = sample_rate;
|
|
|
|
flv_set_audio_codec(s, st, &ctx, flags & FLV_AUDIO_CODECID_MASK);
|
|
|
|
sample_rate = ctx.sample_rate;
|
2004-04-17 12:04:59 +00:00
|
|
|
}
|
|
|
|
}else{
|
2006-12-12 12:29:33 +00:00
|
|
|
size -= flv_set_video_codec(s, st, flags & FLV_VIDEO_CODECID_MASK);
|
2004-03-10 03:45:14 +00:00
|
|
|
}
|
|
|
|
|
2008-05-26 22:01:41 +00:00
|
|
|
if (st->codec->codec_id == CODEC_ID_AAC ||
|
|
|
|
st->codec->codec_id == CODEC_ID_H264) {
|
2011-02-21 15:43:01 +00:00
|
|
|
int type = avio_r8(s->pb);
|
2008-05-26 22:01:41 +00:00
|
|
|
size--;
|
|
|
|
if (st->codec->codec_id == CODEC_ID_H264) {
|
2011-02-21 15:43:01 +00:00
|
|
|
int32_t cts = (avio_rb24(s->pb)+0xff800000)^0xff800000; // sign extension
|
2008-11-16 02:56:34 +00:00
|
|
|
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;
|
2008-05-26 22:01:41 +00:00
|
|
|
}
|
|
|
|
if (type == 0) {
|
2011-12-15 14:29:55 +00:00
|
|
|
if (st->codec->extradata) {
|
|
|
|
if ((ret = flv_queue_extradata(flv, s->pb, is_audio, size)) < 0)
|
|
|
|
return ret;
|
|
|
|
ret = AVERROR(EAGAIN);
|
|
|
|
goto leave;
|
|
|
|
}
|
2008-08-29 22:03:18 +00:00
|
|
|
if ((ret = flv_get_extradata(s, st, size)) < 0)
|
2008-05-26 22:01:41 +00:00
|
|
|
return ret;
|
2009-02-21 23:54:50 +00:00
|
|
|
if (st->codec->codec_id == CODEC_ID_AAC) {
|
|
|
|
MPEG4AudioConfig cfg;
|
2011-10-17 07:28:53 +00:00
|
|
|
avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
|
2011-10-21 15:25:30 +00:00
|
|
|
st->codec->extradata_size * 8, 1);
|
2009-11-11 20:24:23 +00:00
|
|
|
st->codec->channels = cfg.channels;
|
2010-07-01 22:31:31 +00:00
|
|
|
if (cfg.ext_sample_rate)
|
|
|
|
st->codec->sample_rate = cfg.ext_sample_rate;
|
|
|
|
else
|
|
|
|
st->codec->sample_rate = cfg.sample_rate;
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(s, "mp4a config channels %d sample rate %d\n",
|
2009-02-21 23:54:50 +00:00
|
|
|
st->codec->channels, st->codec->sample_rate);
|
|
|
|
}
|
|
|
|
|
2010-04-01 08:02:20 +00:00
|
|
|
ret = AVERROR(EAGAIN);
|
|
|
|
goto leave;
|
2008-05-26 22:01:41 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-04-02 03:52:19 +00:00
|
|
|
/* skip empty data packets */
|
2010-04-01 08:02:20 +00:00
|
|
|
if (!size) {
|
|
|
|
ret = AVERROR(EAGAIN);
|
|
|
|
goto leave;
|
|
|
|
}
|
2009-04-02 03:52:19 +00:00
|
|
|
|
2008-08-29 22:03:18 +00:00
|
|
|
ret= av_get_packet(s->pb, pkt, size);
|
2009-04-03 15:32:31 +00:00
|
|
|
if (ret < 0) {
|
2007-07-19 15:23:32 +00:00
|
|
|
return AVERROR(EIO);
|
2003-07-09 23:10:59 +00:00
|
|
|
}
|
|
|
|
/* note: we need to modify the packet size here to handle the last
|
|
|
|
packet */
|
|
|
|
pkt->size = ret;
|
2008-05-23 21:51:33 +00:00
|
|
|
pkt->dts = dts;
|
2008-11-16 02:56:34 +00:00
|
|
|
pkt->pts = pts == AV_NOPTS_VALUE ? dts : pts;
|
2003-07-09 23:10:59 +00:00
|
|
|
pkt->stream_index = st->index;
|
2011-12-15 14:29:55 +00:00
|
|
|
if (flv->new_extradata[is_audio]) {
|
|
|
|
uint8_t *side = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
|
|
|
|
flv->new_extradata_size[is_audio]);
|
|
|
|
if (side) {
|
|
|
|
memcpy(side, flv->new_extradata[is_audio],
|
|
|
|
flv->new_extradata_size[is_audio]);
|
|
|
|
av_freep(&flv->new_extradata[is_audio]);
|
|
|
|
flv->new_extradata_size[is_audio] = 0;
|
|
|
|
}
|
|
|
|
}
|
2011-12-16 10:48:24 +00:00
|
|
|
if (is_audio && (sample_rate != flv->last_sample_rate ||
|
|
|
|
channels != flv->last_channels)) {
|
|
|
|
flv->last_sample_rate = sample_rate;
|
|
|
|
flv->last_channels = channels;
|
|
|
|
ff_add_param_change(pkt, channels, 0, sample_rate, 0, 0);
|
|
|
|
}
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2006-12-06 00:23:04 +00:00
|
|
|
if (is_audio || ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY))
|
2010-03-31 12:29:58 +00:00
|
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2010-04-01 08:02:20 +00:00
|
|
|
leave:
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(s->pb, 4);
|
2003-07-09 23:10:59 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-04-18 19:09:25 +00:00
|
|
|
static int flv_read_seek(AVFormatContext *s, int stream_index,
|
|
|
|
int64_t ts, int flags)
|
|
|
|
{
|
2011-04-12 07:37:10 +00:00
|
|
|
return avio_seek_time(s->pb, stream_index, ts, flags);
|
2010-04-18 19:09:25 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#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;
|
|
|
|
|
2011-03-05 20:06:46 +00:00
|
|
|
if (!s->pb->seekable) {
|
2010-04-18 19:09:25 +00:00
|
|
|
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);
|
|
|
|
}
|
2011-04-12 07:37:10 +00:00
|
|
|
ret = avio_seek_time(s->pb, stream_index, ts, flags);
|
2010-04-18 19:09:25 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (ret == AVERROR(ENOSYS))
|
|
|
|
ret = av_seek_frame(s, stream_index, ts, flags);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
AVInputFormat ff_flv_demuxer = {
|
2011-07-16 20:18:12 +00:00
|
|
|
.name = "flv",
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("FLV format"),
|
|
|
|
.priv_data_size = sizeof(FLVContext),
|
|
|
|
.read_probe = flv_probe,
|
|
|
|
.read_header = flv_read_header,
|
|
|
|
.read_packet = flv_read_packet,
|
2010-04-18 19:09:25 +00:00
|
|
|
.read_seek = flv_read_seek,
|
|
|
|
#if 0
|
|
|
|
.read_seek2 = flv_read_seek2,
|
|
|
|
#endif
|
2011-12-15 14:29:55 +00:00
|
|
|
.read_close = flv_read_close,
|
2003-07-09 23:10:59 +00:00
|
|
|
.extensions = "flv",
|
|
|
|
.value = CODEC_ID_FLV1,
|
|
|
|
};
|