d4f5d74a |
/* |
7fbde343 |
* FLV demuxer |
406792e7 |
* Copyright (c) 2003 The FFmpeg Project |
d4f5d74a |
* |
7b94177e |
* This demuxer will generate a 1 byte extradata for VP6F content.
* It is composed of: |
41ed7ab4 |
* - upper 4 bits: difference between encoded width and visible width
* - lower 4 bits: difference between encoded height and visible height |
7b94177e |
* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
d4f5d74a |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
d4f5d74a |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
d4f5d74a |
* 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 |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
5509bffa |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
d4f5d74a |
*/ |
d2718187 |
|
df2bd71a |
#include "libavutil/avstring.h" |
644d8d2e |
#include "libavutil/channel_layout.h" |
d2d67e42 |
#include "libavutil/dict.h" |
5b54a90c |
#include "libavutil/opt.h" |
3383a53e |
#include "libavutil/intfloat.h" |
d3f751e6 |
#include "libavutil/mathematics.h" |
c1c206b3 |
#include "libavcodec/bytestream.h" |
d2718187 |
#include "libavcodec/mpeg4audio.h" |
d4f5d74a |
#include "avformat.h" |
c3f9ebf7 |
#include "internal.h" |
933e90a6 |
#include "avio_internal.h" |
6cac3a3b |
#include "flv.h" |
d4f5d74a |
|
7e297a46 |
#define VALIDATE_INDEX_TS_THRESH 2500
|
cbbd906b |
#define RESYNC_BUFFER_SIZE (1<<20)
|
daf8cf35 |
typedef struct FLVContext { |
5b54a90c |
const AVClass *class; ///< Class for private options. |
e4529df9 |
int trust_metadata; ///< configure streams according onMetaData
int wrong_dts; ///< wrong dts due to negative cts |
52c522c7 |
uint8_t *new_extradata[FLV_STREAM_TYPE_NB]; |
ae48547a |
int new_extradata_size[FLV_STREAM_TYPE_NB]; |
e4529df9 |
int last_sample_rate;
int last_channels; |
7e297a46 |
struct {
int64_t dts;
int64_t pos;
} validate_index[2];
int validate_next;
int validate_count; |
71a5cd7d |
int searched_for_end; |
cbbd906b |
uint8_t resync_buffer[2*RESYNC_BUFFER_SIZE]; |
e3cf978c |
int broken_sizes; |
9a099526 |
int sum_flv_tag_size; |
cd141e71 |
int last_keyframe_stream_index;
int keyframe_count; |
7c5478a2 |
int64_t video_bit_rate;
int64_t audio_bit_rate; |
cd141e71 |
int64_t *keyframe_times;
int64_t *keyframe_filepositions; |
07793962 |
int missing_streams; |
e0791c5a |
AVRational framerate; |
ebd61055 |
} FLVContext;
|
2fbdfba0 |
static int probe(AVProbeData *p, int live) |
d4f5d74a |
{ |
2fbdfba0 |
const uint8_t *d = p->buf;
unsigned offset = AV_RB32(d + 5); |
d4f5d74a |
|
e4529df9 |
if (d[0] == 'F' &&
d[1] == 'L' &&
d[2] == 'V' &&
d[3] < 5 && d[5] == 0 && |
2fbdfba0 |
offset + 100 < p->buf_size &&
offset > 8) {
int is_live = !memcmp(d + offset + 40, "NGINX RTMP", 10);
if (live == is_live)
return AVPROBE_SCORE_MAX; |
d4f5d74a |
}
return 0;
}
|
2fbdfba0 |
static int flv_probe(AVProbeData *p)
{
return probe(p, 0);
}
static int live_flv_probe(AVProbeData *p)
{
return probe(p, 1);
}
|
cd141e71 |
static void add_keyframes_index(AVFormatContext *s)
{
FLVContext *flv = s->priv_data;
AVStream *stream = NULL;
unsigned int i = 0;
if (flv->last_keyframe_stream_index < 0) {
av_log(s, AV_LOG_DEBUG, "keyframe stream hasn't been created\n");
return;
}
av_assert0(flv->last_keyframe_stream_index <= s->nb_streams);
stream = s->streams[flv->last_keyframe_stream_index];
if (stream->nb_index_entries == 0) {
for (i = 0; i < flv->keyframe_count; i++) { |
4696f763 |
av_log(s, AV_LOG_TRACE, "keyframe filepositions = %"PRId64" times = %"PRId64"\n",
flv->keyframe_filepositions[i], flv->keyframe_times[i] * 1000); |
cd141e71 |
av_add_index_entry(stream, flv->keyframe_filepositions[i],
flv->keyframe_times[i] * 1000, 0, 0, AVINDEX_KEYFRAME);
}
} else
av_log(s, AV_LOG_WARNING, "Skipping duplicate index\n");
if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
av_freep(&flv->keyframe_times);
av_freep(&flv->keyframe_filepositions);
flv->keyframe_count = 0;
}
}
|
41f43202 |
static AVStream *create_stream(AVFormatContext *s, int codec_type) |
21e2dc9f |
{ |
ad14aab3 |
FLVContext *flv = s->priv_data; |
21e2dc9f |
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return NULL; |
9200514a |
st->codecpar->codec_type = codec_type; |
ae48547a |
if (s->nb_streams>=3 ||( s->nb_streams==2 |
6f69f7a8 |
&& s->streams[0]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE
&& s->streams[1]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)) |
7d82020f |
s->ctx_flags &= ~AVFMTCTX_NOHEADER; |
af7d0ad9 |
if (codec_type == AVMEDIA_TYPE_AUDIO) { |
7c5478a2 |
st->codecpar->bit_rate = flv->audio_bit_rate; |
07793962 |
flv->missing_streams &= ~FLV_HEADER_FLAG_HASAUDIO; |
af7d0ad9 |
} |
e0791c5a |
if (codec_type == AVMEDIA_TYPE_VIDEO) { |
7c5478a2 |
st->codecpar->bit_rate = flv->video_bit_rate; |
07793962 |
flv->missing_streams &= ~FLV_HEADER_FLAG_HASVIDEO; |
e0791c5a |
st->avg_frame_rate = flv->framerate;
} |
07793962 |
|
7d82020f |
|
21e2dc9f |
avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */ |
ad14aab3 |
flv->last_keyframe_stream_index = s->nb_streams - 1;
add_keyframes_index(s); |
21e2dc9f |
return st;
} |
e4529df9 |
|
9200514a |
static int flv_same_audio_codec(AVCodecParameters *apar, int flags) |
09a445ce |
{
int bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8; |
e4529df9 |
int flv_codecid = flags & FLV_AUDIO_CODECID_MASK; |
09a445ce |
int codec_id;
|
9200514a |
if (!apar->codec_id && !apar->codec_tag) |
09a445ce |
return 1;
|
9200514a |
if (apar->bits_per_coded_sample != bits_per_coded_sample) |
09a445ce |
return 0;
|
e4529df9 |
switch (flv_codecid) {
// no distinction between S16 and S8 PCM codec flags |
09a445ce |
case FLV_CODECID_PCM: |
e4529df9 |
codec_id = bits_per_coded_sample == 8
? AV_CODEC_ID_PCM_U8 |
09a445ce |
#if HAVE_BIGENDIAN |
e4529df9 |
: AV_CODEC_ID_PCM_S16BE; |
09a445ce |
#else |
e4529df9 |
: AV_CODEC_ID_PCM_S16LE; |
09a445ce |
#endif |
9200514a |
return codec_id == apar->codec_id; |
09a445ce |
case FLV_CODECID_PCM_LE: |
e4529df9 |
codec_id = bits_per_coded_sample == 8
? AV_CODEC_ID_PCM_U8
: AV_CODEC_ID_PCM_S16LE; |
9200514a |
return codec_id == apar->codec_id; |
09a445ce |
case FLV_CODECID_AAC: |
9200514a |
return apar->codec_id == AV_CODEC_ID_AAC; |
09a445ce |
case FLV_CODECID_ADPCM: |
9200514a |
return apar->codec_id == AV_CODEC_ID_ADPCM_SWF; |
09a445ce |
case FLV_CODECID_SPEEX: |
9200514a |
return apar->codec_id == AV_CODEC_ID_SPEEX; |
09a445ce |
case FLV_CODECID_MP3: |
9200514a |
return apar->codec_id == AV_CODEC_ID_MP3; |
09a445ce |
case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
case FLV_CODECID_NELLYMOSER_16KHZ_MONO:
case FLV_CODECID_NELLYMOSER: |
9200514a |
return apar->codec_id == AV_CODEC_ID_NELLYMOSER; |
09a445ce |
case FLV_CODECID_PCM_MULAW: |
9200514a |
return apar->sample_rate == 8000 &&
apar->codec_id == AV_CODEC_ID_PCM_MULAW; |
09a445ce |
case FLV_CODECID_PCM_ALAW: |
9200514a |
return apar->sample_rate == 8000 &&
apar->codec_id == AV_CODEC_ID_PCM_ALAW; |
09a445ce |
default: |
9200514a |
return apar->codec_tag == (flv_codecid >> FLV_AUDIO_CODECID_OFFSET); |
09a445ce |
}
} |
21e2dc9f |
|
e4529df9 |
static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, |
9200514a |
AVCodecParameters *apar, int flv_codecid) |
e4529df9 |
{
switch (flv_codecid) {
// no distinction between S16 and S8 PCM codec flags
case FLV_CODECID_PCM: |
9200514a |
apar->codec_id = apar->bits_per_coded_sample == 8 |
e4529df9 |
? AV_CODEC_ID_PCM_U8 |
63613fe6 |
#if HAVE_BIGENDIAN |
e4529df9 |
: AV_CODEC_ID_PCM_S16BE; |
58293e57 |
#else |
e4529df9 |
: AV_CODEC_ID_PCM_S16LE; |
58293e57 |
#endif |
e4529df9 |
break;
case FLV_CODECID_PCM_LE: |
9200514a |
apar->codec_id = apar->bits_per_coded_sample == 8 |
e4529df9 |
? AV_CODEC_ID_PCM_U8
: AV_CODEC_ID_PCM_S16LE;
break;
case FLV_CODECID_AAC: |
9200514a |
apar->codec_id = AV_CODEC_ID_AAC; |
e4529df9 |
break;
case FLV_CODECID_ADPCM: |
9200514a |
apar->codec_id = AV_CODEC_ID_ADPCM_SWF; |
e4529df9 |
break;
case FLV_CODECID_SPEEX: |
9200514a |
apar->codec_id = AV_CODEC_ID_SPEEX;
apar->sample_rate = 16000; |
e4529df9 |
break;
case FLV_CODECID_MP3: |
9200514a |
apar->codec_id = AV_CODEC_ID_MP3; |
e4529df9 |
astream->need_parsing = AVSTREAM_PARSE_FULL;
break;
case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
// in case metadata does not otherwise declare samplerate |
9200514a |
apar->sample_rate = 8000;
apar->codec_id = AV_CODEC_ID_NELLYMOSER; |
e4529df9 |
break;
case FLV_CODECID_NELLYMOSER_16KHZ_MONO: |
9200514a |
apar->sample_rate = 16000;
apar->codec_id = AV_CODEC_ID_NELLYMOSER; |
e4529df9 |
break;
case FLV_CODECID_NELLYMOSER: |
9200514a |
apar->codec_id = AV_CODEC_ID_NELLYMOSER; |
e4529df9 |
break;
case FLV_CODECID_PCM_MULAW: |
9200514a |
apar->sample_rate = 8000;
apar->codec_id = AV_CODEC_ID_PCM_MULAW; |
e4529df9 |
break;
case FLV_CODECID_PCM_ALAW: |
9200514a |
apar->sample_rate = 8000;
apar->codec_id = AV_CODEC_ID_PCM_ALAW; |
e4529df9 |
break;
default: |
a6881765 |
avpriv_request_sample(s, "Audio codec (%x)", |
e4529df9 |
flv_codecid >> FLV_AUDIO_CODECID_OFFSET); |
9200514a |
apar->codec_tag = flv_codecid >> FLV_AUDIO_CODECID_OFFSET; |
428cc588 |
}
}
|
9200514a |
static int flv_same_video_codec(AVCodecParameters *vpar, int flags) |
09a445ce |
{
int flv_codecid = flags & FLV_VIDEO_CODECID_MASK;
|
9200514a |
if (!vpar->codec_id && !vpar->codec_tag) |
09a445ce |
return 1;
switch (flv_codecid) { |
e4529df9 |
case FLV_CODECID_H263: |
9200514a |
return vpar->codec_id == AV_CODEC_ID_FLV1; |
e4529df9 |
case FLV_CODECID_SCREEN: |
9200514a |
return vpar->codec_id == AV_CODEC_ID_FLASHSV; |
e4529df9 |
case FLV_CODECID_SCREEN2: |
9200514a |
return vpar->codec_id == AV_CODEC_ID_FLASHSV2; |
e4529df9 |
case FLV_CODECID_VP6: |
9200514a |
return vpar->codec_id == AV_CODEC_ID_VP6F; |
e4529df9 |
case FLV_CODECID_VP6A: |
9200514a |
return vpar->codec_id == AV_CODEC_ID_VP6A; |
e4529df9 |
case FLV_CODECID_H264: |
9200514a |
return vpar->codec_id == AV_CODEC_ID_H264; |
e4529df9 |
default: |
9200514a |
return vpar->codec_tag == flv_codecid; |
09a445ce |
}
}
|
e4529df9 |
static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream,
int flv_codecid, int read)
{ |
98b3a797 |
int ret = 0; |
9200514a |
AVCodecParameters *par = vstream->codecpar; |
98b3a797 |
enum AVCodecID old_codec_id = vstream->codecpar->codec_id; |
e4529df9 |
switch (flv_codecid) {
case FLV_CODECID_H263: |
9200514a |
par->codec_id = AV_CODEC_ID_FLV1; |
e4529df9 |
break; |
ae48547a |
case FLV_CODECID_REALH263: |
6f69f7a8 |
par->codec_id = AV_CODEC_ID_H263; |
ae48547a |
break; // Really mean it this time |
e4529df9 |
case FLV_CODECID_SCREEN: |
9200514a |
par->codec_id = AV_CODEC_ID_FLASHSV; |
e4529df9 |
break;
case FLV_CODECID_SCREEN2: |
9200514a |
par->codec_id = AV_CODEC_ID_FLASHSV2; |
e4529df9 |
break;
case FLV_CODECID_VP6: |
9200514a |
par->codec_id = AV_CODEC_ID_VP6F; |
e4529df9 |
case FLV_CODECID_VP6A:
if (flv_codecid == FLV_CODECID_VP6A) |
9200514a |
par->codec_id = AV_CODEC_ID_VP6A; |
e4529df9 |
if (read) { |
9200514a |
if (par->extradata_size != 1) { |
6f69f7a8 |
ff_alloc_extradata(par, 1); |
428cc588 |
} |
9200514a |
if (par->extradata)
par->extradata[0] = avio_r8(s->pb); |
e4529df9 |
else
avio_skip(s->pb, 1);
} |
98b3a797 |
ret = 1; // 1 byte body size adjustment for flv_read_packet()
break; |
e4529df9 |
case FLV_CODECID_H264: |
9200514a |
par->codec_id = AV_CODEC_ID_H264; |
cc0e2ba1 |
vstream->need_parsing = AVSTREAM_PARSE_HEADERS; |
98b3a797 |
ret = 3; // not 4, reading packet type will consume one byte
break; |
ae48547a |
case FLV_CODECID_MPEG4: |
6f69f7a8 |
par->codec_id = AV_CODEC_ID_MPEG4; |
98b3a797 |
ret = 3;
break; |
e4529df9 |
default: |
a6881765 |
avpriv_request_sample(s, "Video codec (%x)", flv_codecid); |
9200514a |
par->codec_tag = flv_codecid; |
428cc588 |
}
|
98b3a797 |
if (!vstream->internal->need_context_update && par->codec_id != old_codec_id) {
avpriv_request_sample(s, "Changing the codec id midstream");
return AVERROR_PATCHWELCOME;
}
return ret; |
428cc588 |
}
|
e4529df9 |
static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize)
{ |
e63a3628 |
int length = avio_rb16(ioc); |
e4529df9 |
if (length >= buffsize) { |
45a8a02a |
avio_skip(ioc, length); |
cc38e063 |
return -1;
} |
896bcd2e |
|
e63a3628 |
avio_read(ioc, buffer, length); |
896bcd2e |
|
cc38e063 |
buffer[length] = '\0'; |
896bcd2e |
|
cc38e063 |
return length; |
896bcd2e |
}
|
cd141e71 |
static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t max_pos) |
e4529df9 |
{
FLVContext *flv = s->priv_data; |
0c4d4a93 |
unsigned int timeslen = 0, fileposlen = 0, i; |
cb7e2c1c |
char str_val[256]; |
e4529df9 |
int64_t *times = NULL; |
cb7e2c1c |
int64_t *filepositions = NULL; |
e4529df9 |
int ret = AVERROR(ENOSYS);
int64_t initial_pos = avio_tell(ioc); |
cb7e2c1c |
|
cd141e71 |
if (flv->keyframe_count > 0) {
av_log(s, AV_LOG_DEBUG, "keyframes have been paresed\n"); |
4717e297 |
return 0;
} |
cd141e71 |
av_assert0(!flv->keyframe_times);
av_assert0(!flv->keyframe_filepositions); |
4717e297 |
|
b70f04c2 |
if (s->flags & AVFMT_FLAG_IGNIDX)
return 0;
|
e4529df9 |
while (avio_tell(ioc) < max_pos - 2 &&
amf_get_string(ioc, str_val, sizeof(str_val)) > 0) { |
ae48547a |
int64_t **current_array; |
0c4d4a93 |
unsigned int arraylen; |
cb7e2c1c |
// Expect array object in context
if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY)
break;
arraylen = avio_rb32(ioc); |
ae48547a |
if (arraylen>>28) |
cb7e2c1c |
break;
|
ae48547a |
if (!strcmp(KEYFRAMES_TIMESTAMP_TAG , str_val) && !times) {
current_array = × |
e4529df9 |
timeslen = arraylen;
} else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) &&
!filepositions) { |
ae48547a |
current_array = &filepositions; |
e4529df9 |
fileposlen = arraylen;
} else
// unexpected metatag inside keyframes, will not use such
// metadata for indexing |
0c4d4a93 |
break;
if (!(*current_array = av_mallocz(sizeof(**current_array) * arraylen))) {
ret = AVERROR(ENOMEM);
goto finish;
}
|
cb7e2c1c |
for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER) |
83f70805 |
goto invalid; |
7fad19a6 |
current_array[0][i] = av_int2double(avio_rb64(ioc)); |
cb7e2c1c |
} |
578d6861 |
if (times && filepositions) {
// All done, exiting at a position allowing amf_parse_object
// to finish parsing the object
ret = 0;
break;
} |
cb7e2c1c |
}
|
df0bff66 |
if (timeslen == fileposlen && fileposlen>1 && max_pos <= filepositions[0]) { |
cd141e71 |
for (i = 0; i < FFMIN(2,fileposlen); i++) {
flv->validate_index[i].pos = filepositions[i];
flv->validate_index[i].dts = times[i] * 1000;
flv->validate_count = i + 1; |
7e297a46 |
} |
cd141e71 |
flv->keyframe_times = times;
flv->keyframe_filepositions = filepositions;
flv->keyframe_count = timeslen;
times = NULL;
filepositions = NULL; |
83f70805 |
} else {
invalid: |
cb7e2c1c |
av_log(s, AV_LOG_WARNING, "Invalid keyframes object, skipping.\n"); |
83f70805 |
} |
cb7e2c1c |
finish:
av_freep(×);
av_freep(&filepositions); |
ba667e60 |
avio_seek(ioc, initial_pos, SEEK_SET); |
cb7e2c1c |
return ret;
}
|
e4529df9 |
static int amf_parse_object(AVFormatContext *s, AVStream *astream,
AVStream *vstream, const char *key,
int64_t max_pos, int depth)
{ |
9200514a |
AVCodecParameters *apar, *vpar; |
5b54a90c |
FLVContext *flv = s->priv_data; |
471fe57e |
AVIOContext *ioc; |
428cc588 |
AMFDataType amf_type; |
eb767a27 |
char str_val[1024]; |
428cc588 |
double num_val;
|
e4529df9 |
num_val = 0;
ioc = s->pb; |
e63a3628 |
amf_type = avio_r8(ioc); |
428cc588 |
|
e4529df9 |
switch (amf_type) {
case AMF_DATA_TYPE_NUMBER:
num_val = av_int2double(avio_rb64(ioc));
break;
case AMF_DATA_TYPE_BOOL:
num_val = avio_r8(ioc);
break;
case AMF_DATA_TYPE_STRING: |
5c37ffca |
if (amf_get_string(ioc, str_val, sizeof(str_val)) < 0) {
av_log(s, AV_LOG_ERROR, "AMF_DATA_TYPE_STRING parsing failed\n"); |
e4529df9 |
return -1; |
5c37ffca |
} |
e4529df9 |
break;
case AMF_DATA_TYPE_OBJECT: |
ad14aab3 |
if (key && |
4de591e6 |
(ioc->seekable & AVIO_SEEKABLE_NORMAL) && |
e4529df9 |
!strcmp(KEYFRAMES_TAG, key) && depth == 1) |
cd141e71 |
if (parse_keyframes_index(s, ioc, |
e4529df9 |
max_pos) < 0) |
ae48547a |
av_log(s, AV_LOG_ERROR, "Keyframe index parsing failed\n"); |
ad14aab3 |
else
add_keyframes_index(s); |
e4529df9 |
while (avio_tell(ioc) < max_pos - 2 &&
amf_get_string(ioc, str_val, sizeof(str_val)) > 0)
if (amf_parse_object(s, astream, vstream, str_val, max_pos,
depth + 1) < 0)
return -1; // if we couldn't skip, bomb out. |
5c37ffca |
if (avio_r8(ioc) != AMF_END_OF_OBJECT) {
av_log(s, AV_LOG_ERROR, "Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_OBJECT\n"); |
428cc588 |
return -1; |
5c37ffca |
} |
e4529df9 |
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: |
6bed88ac |
{
unsigned v; |
e4529df9 |
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) |
428cc588 |
return -1; |
6bed88ac |
v = avio_r8(ioc);
if (v != AMF_END_OF_OBJECT) {
av_log(s, AV_LOG_ERROR, "Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_MIXEDARRAY, found %d\n", v); |
428cc588 |
return -1; |
5c37ffca |
} |
e4529df9 |
break; |
6bed88ac |
} |
e4529df9 |
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 |
5c37ffca |
av_log(s, AV_LOG_ERROR, "unsupported amf type %d\n", amf_type); |
e4529df9 |
return -1; |
428cc588 |
}
|
93c04e09 |
if (key) { |
6f69f7a8 |
apar = astream ? astream->codecpar : NULL;
vpar = vstream ? vstream->codecpar : NULL; |
0fadbd36 |
|
93c04e09 |
// stream info doesn't live any deeper than the first object
if (depth == 1) {
if (amf_type == AMF_DATA_TYPE_NUMBER ||
amf_type == AMF_DATA_TYPE_BOOL) {
if (!strcmp(key, "duration"))
s->duration = num_val * AV_TIME_BASE; |
7c5478a2 |
else if (!strcmp(key, "videodatarate") && |
93c04e09 |
0 <= (int)(num_val * 1024.0)) |
7c5478a2 |
flv->video_bit_rate = num_val * 1024.0;
else if (!strcmp(key, "audiodatarate") && |
93c04e09 |
0 <= (int)(num_val * 1024.0)) |
7c5478a2 |
flv->audio_bit_rate = num_val * 1024.0; |
93c04e09 |
else if (!strcmp(key, "datastream")) { |
7869b295 |
AVStream *st = create_stream(s, AVMEDIA_TYPE_SUBTITLE); |
93c04e09 |
if (!st)
return AVERROR(ENOMEM); |
9200514a |
st->codecpar->codec_id = AV_CODEC_ID_TEXT; |
e0791c5a |
} else if (!strcmp(key, "framerate")) {
flv->framerate = av_d2q(num_val, 1000);
if (vstream)
vstream->avg_frame_rate = flv->framerate; |
93c04e09 |
} else if (flv->trust_metadata) { |
9200514a |
if (!strcmp(key, "videocodecid") && vpar) { |
98b3a797 |
int ret = flv_set_video_codec(s, vstream, num_val, 0);
if (ret < 0)
return ret; |
9200514a |
} else if (!strcmp(key, "audiocodecid") && apar) { |
93c04e09 |
int id = ((int)num_val) << FLV_AUDIO_CODECID_OFFSET; |
9200514a |
flv_set_audio_codec(s, astream, apar, id);
} else if (!strcmp(key, "audiosamplerate") && apar) {
apar->sample_rate = num_val;
} else if (!strcmp(key, "audiosamplesize") && apar) {
apar->bits_per_coded_sample = num_val;
} else if (!strcmp(key, "stereo") && apar) {
apar->channels = num_val + 1;
apar->channel_layout = apar->channels == 2 ?
AV_CH_LAYOUT_STEREO :
AV_CH_LAYOUT_MONO;
} else if (!strcmp(key, "width") && vpar) {
vpar->width = num_val;
} else if (!strcmp(key, "height") && vpar) {
vpar->height = num_val; |
93c04e09 |
} |
5b54a90c |
} |
21e2dc9f |
} |
e3cf978c |
if (amf_type == AMF_DATA_TYPE_STRING) {
if (!strcmp(key, "encoder")) {
int version = -1;
if (1 == sscanf(str_val, "Open Broadcaster Software v0.%d", &version)) {
if (version > 0 && version <= 655)
flv->broken_sizes = 1;
} |
ce0834bd |
} else if (!strcmp(key, "metadatacreator") && !strcmp(str_val, "MEGA")) {
flv->broken_sizes = 1; |
e3cf978c |
}
} |
b204c46d |
}
|
8b8a47f6 |
if (amf_type == AMF_DATA_TYPE_OBJECT && s->nb_streams == 1 && |
6f69f7a8 |
((!apar && !strcmp(key, "audiocodecid")) ||
(!vpar && !strcmp(key, "videocodecid")))) |
8b8a47f6 |
s->ctx_flags &= ~AVFMTCTX_NOHEADER; //If there is either audio/video missing, codecid will be an empty object
|
5e87222f |
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") || |
0a9425d7 |
!strcmp(key, "audiocodecid") ||
!strcmp(key, "datastream")) |
5e87222f |
return 0;
|
0f789322 |
s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
e4529df9 |
if (amf_type == AMF_DATA_TYPE_BOOL) {
av_strlcpy(str_val, num_val > 0 ? "true" : "false",
sizeof(str_val)); |
d2d67e42 |
av_dict_set(&s->metadata, key, str_val, 0); |
e4529df9 |
} else if (amf_type == AMF_DATA_TYPE_NUMBER) { |
cc38e063 |
snprintf(str_val, sizeof(str_val), "%.f", num_val); |
d2d67e42 |
av_dict_set(&s->metadata, key, str_val, 0); |
df2bd71a |
} else if (amf_type == AMF_DATA_TYPE_STRING) |
d2d67e42 |
av_dict_set(&s->metadata, key, str_val, 0); |
428cc588 |
}
return 0;
}
|
efc4bfc1 |
#define TYPE_ONTEXTDATA 1 |
3727cd54 |
#define TYPE_ONCAPTION 2 |
790a3cdf |
#define TYPE_ONCAPTIONINFO 3 |
3727cd54 |
#define TYPE_UNKNOWN 9 |
efc4bfc1 |
|
e4529df9 |
static int flv_read_metabody(AVFormatContext *s, int64_t next_pos)
{ |
cd141e71 |
FLVContext *flv = s->priv_data; |
428cc588 |
AMFDataType type; |
61a28d00 |
AVStream *stream, *astream, *vstream;
AVStream av_unused *dstream; |
471fe57e |
AVIOContext *ioc; |
4eec2606 |
int i; |
e4529df9 |
// only needs to hold the string "onMetaData".
// Anything longer is something we don't want. |
b2fecce3 |
char buffer[32]; |
428cc588 |
astream = NULL;
vstream = NULL; |
ae48547a |
dstream = NULL; |
e4529df9 |
ioc = s->pb; |
428cc588 |
|
e4529df9 |
// first object needs to be "onMetaData" string |
e63a3628 |
type = avio_r8(ioc); |
21e2dc9f |
if (type != AMF_DATA_TYPE_STRING ||
amf_get_string(ioc, buffer, sizeof(buffer)) < 0) |
efc4bfc1 |
return TYPE_UNKNOWN; |
21e2dc9f |
if (!strcmp(buffer, "onTextData")) |
efc4bfc1 |
return TYPE_ONTEXTDATA; |
21e2dc9f |
|
3727cd54 |
if (!strcmp(buffer, "onCaption"))
return TYPE_ONCAPTION;
|
790a3cdf |
if (!strcmp(buffer, "onCaptionInfo"))
return TYPE_ONCAPTIONINFO;
|
108b738d |
if (strcmp(buffer, "onMetaData") && strcmp(buffer, "onCuePoint")) {
av_log(s, AV_LOG_DEBUG, "Unknown type %s\n", buffer); |
efc4bfc1 |
return TYPE_UNKNOWN; |
108b738d |
} |
428cc588 |
|
e4529df9 |
// 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++) { |
428cc588 |
stream = s->streams[i]; |
cd141e71 |
if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
e4529df9 |
vstream = stream; |
cd141e71 |
flv->last_keyframe_stream_index = i;
} else if (stream->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { |
ae48547a |
astream = stream; |
cd141e71 |
if (flv->last_keyframe_stream_index == -1)
flv->last_keyframe_stream_index = i;
} |
6f69f7a8 |
else if (stream->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) |
ae48547a |
dstream = stream; |
428cc588 |
}
|
e4529df9 |
// parse the second object (we want a mixed array)
if (amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0) |
428cc588 |
return -1;
return 0;
}
|
6e9651d1 |
static int flv_read_header(AVFormatContext *s) |
d4f5d74a |
{ |
07793962 |
int flags; |
9a099526 |
FLVContext *flv = s->priv_data; |
09ae7b81 |
int offset; |
c0628919 |
int pre_tag_size = 0; |
d4f5d74a |
|
45a8a02a |
avio_skip(s->pb, 4); |
07793962 |
flags = avio_r8(s->pb);
flv->missing_streams = flags & (FLV_HEADER_FLAG_HASVIDEO | FLV_HEADER_FLAG_HASAUDIO); |
d4f5d74a |
|
ee0dadc1 |
s->ctx_flags |= AVFMTCTX_NOHEADER; |
b41497e9 |
|
e63a3628 |
offset = avio_rb32(s->pb); |
f59d8ff8 |
avio_seek(s->pb, offset, SEEK_SET); |
c0628919 |
/* Annex E. The FLV File Format
* E.3 TheFLVFileBody
* Field Type Comment
* PreviousTagSize0 UI32 Always 0
* */
pre_tag_size = avio_rb32(s->pb);
if (pre_tag_size) {
av_log(s, AV_LOG_WARNING, "Read FLV header error, input file is not a standard flv format, first PreviousTagSize0 always is 0\n");
} |
d4f5d74a |
|
aeb20f7f |
s->start_time = 0; |
9a099526 |
flv->sum_flv_tag_size = 0; |
cd141e71 |
flv->last_keyframe_stream_index = -1; |
aeb20f7f |
|
d4f5d74a |
return 0;
}
|
251f320f |
static int flv_read_close(AVFormatContext *s)
{ |
52c522c7 |
int i; |
251f320f |
FLVContext *flv = s->priv_data; |
ae48547a |
for (i=0; i<FLV_STREAM_TYPE_NB; i++) |
52c522c7 |
av_freep(&flv->new_extradata[i]); |
cd141e71 |
av_freep(&flv->keyframe_times);
av_freep(&flv->keyframe_filepositions); |
251f320f |
return 0;
}
|
04fd3e81 |
static int flv_get_extradata(AVFormatContext *s, AVStream *st, int size)
{ |
6f69f7a8 |
av_freep(&st->codecpar->extradata); |
323b8c95 |
if (ff_get_extradata(s, st->codecpar, s->pb, size) < 0) |
04fd3e81 |
return AVERROR(ENOMEM); |
4d2b9ece |
st->internal->need_context_update = 1; |
04fd3e81 |
return 0;
}
|
251f320f |
static int flv_queue_extradata(FLVContext *flv, AVIOContext *pb, int stream,
int size)
{
av_free(flv->new_extradata[stream]); |
e4529df9 |
flv->new_extradata[stream] = av_mallocz(size + |
059a9348 |
AV_INPUT_BUFFER_PADDING_SIZE); |
251f320f |
if (!flv->new_extradata[stream])
return AVERROR(ENOMEM);
flv->new_extradata_size[stream] = size;
avio_read(pb, flv->new_extradata[stream], size);
return 0;
}
|
7e297a46 |
static void clear_index_entries(AVFormatContext *s, int64_t pos)
{
int i, j, out; |
e4529df9 |
av_log(s, AV_LOG_WARNING,
"Found invalid index entries, clearing the index.\n"); |
7e297a46 |
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
/* Remove all index entries that point to >= pos */
out = 0; |
e4529df9 |
for (j = 0; j < st->nb_index_entries; j++) |
7e297a46 |
if (st->index_entries[j].pos < pos)
st->index_entries[out++] = st->index_entries[j];
st->nb_index_entries = out;
}
}
|
c951e4b4 |
static int amf_skip_tag(AVIOContext *pb, AMFDataType type)
{
int nb = -1, ret, parse_name = 1;
switch (type) {
case AMF_DATA_TYPE_NUMBER:
avio_skip(pb, 8);
break;
case AMF_DATA_TYPE_BOOL:
avio_skip(pb, 1);
break;
case AMF_DATA_TYPE_STRING:
avio_skip(pb, avio_rb16(pb));
break;
case AMF_DATA_TYPE_ARRAY:
parse_name = 0;
case AMF_DATA_TYPE_MIXEDARRAY:
nb = avio_rb32(pb);
case AMF_DATA_TYPE_OBJECT:
while(!pb->eof_reached && (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY)) {
if (parse_name) {
int size = avio_rb16(pb);
if (!size) {
avio_skip(pb, 1);
break;
}
avio_skip(pb, size);
}
if ((ret = amf_skip_tag(pb, avio_r8(pb))) < 0)
return ret;
}
break;
case AMF_DATA_TYPE_NULL:
case AMF_DATA_TYPE_OBJECT_END:
break;
default:
return AVERROR_INVALIDDATA;
}
return 0;
}
|
21e2dc9f |
static int flv_data_packet(AVFormatContext *s, AVPacket *pkt,
int64_t dts, int64_t next)
{
AVIOContext *pb = s->pb; |
e4529df9 |
AVStream *st = NULL; |
21e2dc9f |
char buf[20]; |
c951e4b4 |
int ret = AVERROR_INVALIDDATA;
int i, length = -1; |
3727cd54 |
int array = 0; |
21e2dc9f |
|
c951e4b4 |
switch (avio_r8(pb)) { |
3727cd54 |
case AMF_DATA_TYPE_ARRAY:
array = 1; |
c951e4b4 |
case AMF_DATA_TYPE_MIXEDARRAY: |
21e2dc9f |
avio_seek(pb, 4, SEEK_CUR); |
c951e4b4 |
case AMF_DATA_TYPE_OBJECT:
break;
default:
goto skip;
} |
21e2dc9f |
|
3727cd54 |
while (array || (ret = amf_get_string(pb, buf, sizeof(buf))) > 0) { |
c951e4b4 |
AMFDataType type = avio_r8(pb); |
3727cd54 |
if (type == AMF_DATA_TYPE_STRING && (array || !strcmp(buf, "text"))) { |
c951e4b4 |
length = avio_rb16(pb);
ret = av_get_packet(pb, pkt, length);
if (ret < 0)
goto skip;
else
break;
} else {
if ((ret = amf_skip_tag(pb, type)) < 0)
goto skip;
}
} |
21e2dc9f |
|
c951e4b4 |
if (length < 0) {
ret = AVERROR_INVALIDDATA;
goto skip;
} |
21e2dc9f |
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i]; |
6f69f7a8 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) |
21e2dc9f |
break;
}
if (i == s->nb_streams) { |
7869b295 |
st = create_stream(s, AVMEDIA_TYPE_SUBTITLE); |
21e2dc9f |
if (!st) |
629b2ed0 |
return AVERROR(ENOMEM); |
9200514a |
st->codecpar->codec_id = AV_CODEC_ID_TEXT; |
21e2dc9f |
}
pkt->dts = dts;
pkt->pts = dts;
pkt->size = ret;
pkt->stream_index = st->index; |
e4529df9 |
pkt->flags |= AV_PKT_FLAG_KEY; |
21e2dc9f |
|
c951e4b4 |
skip: |
21e2dc9f |
avio_seek(s->pb, next + 4, SEEK_SET); |
e4529df9 |
|
21e2dc9f |
return ret;
}
|
cbbd906b |
static int resync(AVFormatContext *s)
{
FLVContext *flv = s->priv_data;
int64_t i;
int64_t pos = avio_tell(s->pb);
for (i=0; !avio_feof(s->pb); i++) {
int j = i & (RESYNC_BUFFER_SIZE-1);
int j1 = j + RESYNC_BUFFER_SIZE;
flv->resync_buffer[j ] =
flv->resync_buffer[j1] = avio_r8(s->pb);
if (i > 22) {
unsigned lsize2 = AV_RB32(flv->resync_buffer + j1 - 4);
if (lsize2 >= 11 && lsize2 + 8LL < FFMIN(i, RESYNC_BUFFER_SIZE)) {
unsigned size2 = AV_RB24(flv->resync_buffer + j1 - lsize2 + 1 - 4);
unsigned lsize1 = AV_RB32(flv->resync_buffer + j1 - lsize2 - 8);
if (lsize1 >= 11 && lsize1 + 8LL + lsize2 < FFMIN(i, RESYNC_BUFFER_SIZE)) {
unsigned size1 = AV_RB24(flv->resync_buffer + j1 - lsize1 + 1 - lsize2 - 8);
if (size1 == lsize1 - 11 && size2 == lsize2 - 11) {
avio_seek(s->pb, pos + i - lsize1 - lsize2 - 8, SEEK_SET);
return 1;
}
}
}
}
}
return AVERROR_EOF;
}
|
d4f5d74a |
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
{ |
ebd61055 |
FLVContext *flv = s->priv_data; |
00ebf89d |
int ret, i, size, flags; |
a7ac1a7b |
enum FlvTagType type; |
4c050429 |
int stream_type=-1; |
f3c51215 |
int64_t next, pos, meta_pos; |
ebd61055 |
int64_t dts, pts = AV_NOPTS_VALUE; |
e2c1d3ec |
int av_uninit(channels);
int av_uninit(sample_rate); |
e4529df9 |
AVStream *st = NULL; |
fd6296e4 |
int last = -1; |
cbbd906b |
int orig_size; |
e4529df9 |
|
cbbd906b |
retry: |
e4529df9 |
/* pkt size is repeated at end. skip it */
pos = avio_tell(s->pb); |
03efd730 |
type = (avio_r8(s->pb) & 0x1F); |
cbbd906b |
orig_size = |
e4529df9 |
size = avio_rb24(s->pb); |
9a099526 |
flv->sum_flv_tag_size += size + 11; |
e4529df9 |
dts = avio_rb24(s->pb); |
ab7ff380 |
dts |= (unsigned)avio_r8(s->pb) << 24; |
fd6296e4 |
av_log(s, AV_LOG_TRACE, "type:%d, size:%d, last:%d, dts:%"PRId64" pos:%"PRId64"\n", type, size, last, dts, avio_tell(s->pb)); |
d34ec64a |
if (avio_feof(s->pb)) |
e4529df9 |
return AVERROR_EOF;
avio_skip(s->pb, 3); /* stream id, always 0 */
flags = 0;
if (flv->validate_next < flv->validate_count) {
int64_t validate_pos = flv->validate_index[flv->validate_next].pos;
if (pos == validate_pos) {
if (FFABS(dts - flv->validate_index[flv->validate_next].dts) <=
VALIDATE_INDEX_TS_THRESH) {
flv->validate_next++;
} else {
clear_index_entries(s, validate_pos);
flv->validate_count = 0;
}
} else if (pos > validate_pos) { |
7e297a46 |
clear_index_entries(s, validate_pos);
flv->validate_count = 0;
}
}
|
3496a20b |
if (size == 0) { |
0bac7a43 |
ret = FFERROR_REDO; |
3496a20b |
goto leave;
} |
115329f1 |
|
e4529df9 |
next = size + avio_tell(s->pb); |
dd9f5916 |
|
e4529df9 |
if (type == FLV_TAG_TYPE_AUDIO) { |
ae48547a |
stream_type = FLV_STREAM_TYPE_AUDIO; |
e4529df9 |
flags = avio_r8(s->pb);
size--;
} else if (type == FLV_TAG_TYPE_VIDEO) { |
ae48547a |
stream_type = FLV_STREAM_TYPE_VIDEO; |
e4529df9 |
flags = avio_r8(s->pb);
size--; |
ae48547a |
if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) |
f3c51215 |
goto skip; |
ae48547a |
} else if (type == FLV_TAG_TYPE_META) {
stream_type=FLV_STREAM_TYPE_DATA; |
1df64d6c |
if (size > 13 + 1 + 4) { // Header-type metadata stuff
int type; |
ae48547a |
meta_pos = avio_tell(s->pb); |
1df64d6c |
type = flv_read_metabody(s, next); |
a86928d2 |
if (type == 0 && dts == 0 || type < 0 || type == TYPE_UNKNOWN) { |
56291434 |
if (type < 0 && flv->validate_count &&
flv->validate_index[0].pos > next &&
flv->validate_index[0].pos - 4 < next
) {
av_log(s, AV_LOG_WARNING, "Adjusting next position due to index mismatch\n");
next = flv->validate_index[0].pos - 4;
} |
ae48547a |
goto skip; |
1df64d6c |
} else if (type == TYPE_ONTEXTDATA) {
avpriv_request_sample(s, "OnTextData packet");
return flv_data_packet(s, pkt, dts, next); |
3727cd54 |
} else if (type == TYPE_ONCAPTION) {
return flv_data_packet(s, pkt, dts, next); |
ae48547a |
}
avio_seek(s->pb, meta_pos, SEEK_SET); |
f3c51215 |
} |
e4529df9 |
} else { |
ae48547a |
av_log(s, AV_LOG_DEBUG, |
277ae5a7 |
"Skipping flv packet: type %d, size %d, flags %d.\n", |
ae48547a |
type, size, flags); |
e4529df9 |
skip: |
15537c90 |
if (avio_seek(s->pb, next, SEEK_SET) != next) {
// This can happen if flv_read_metabody above read past
// next, on a non-seekable input, and the preceding data has
// been flushed out from the IO buffer.
av_log(s, AV_LOG_ERROR, "Unable to seek to the next packet\n");
return AVERROR_INVALIDDATA;
} |
0bac7a43 |
ret = FFERROR_REDO; |
3496a20b |
goto leave; |
c054f116 |
} |
ae58b54b |
|
e4529df9 |
/* skip empty data packets */ |
3496a20b |
if (!size) { |
0bac7a43 |
ret = FFERROR_REDO; |
3496a20b |
goto leave;
} |
e4529df9 |
/* now find stream */
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i]; |
ae48547a |
if (stream_type == FLV_STREAM_TYPE_AUDIO) { |
6f69f7a8 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
(s->audio_codec_id || flv_same_audio_codec(st->codecpar, flags))) |
e4529df9 |
break; |
ae48547a |
} else if (stream_type == FLV_STREAM_TYPE_VIDEO) { |
6f69f7a8 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
(s->video_codec_id || flv_same_video_codec(st->codecpar, flags))) |
ae48547a |
break;
} else if (stream_type == FLV_STREAM_TYPE_DATA) { |
6f69f7a8 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) |
e4529df9 |
break; |
09a445ce |
}
} |
ae48547a |
if (i == s->nb_streams) { |
7869b295 |
static const enum AVMediaType stream_types[] = {AVMEDIA_TYPE_VIDEO, AVMEDIA_TYPE_AUDIO, AVMEDIA_TYPE_SUBTITLE}; |
ae48547a |
st = create_stream(s, stream_types[stream_type]);
if (!st)
return AVERROR(ENOMEM); |
ec794685 |
|
ae48547a |
} |
40d552da |
av_log(s, AV_LOG_TRACE, "%d %X %d \n", stream_type, flags, st->discard); |
fa14804c |
|
4de591e6 |
if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && |
203f9c8f |
((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY ||
stream_type == FLV_STREAM_TYPE_AUDIO)) |
fa14804c |
av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME);
|
ae48547a |
if ( (st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || (stream_type == FLV_STREAM_TYPE_AUDIO)))
||(st->discard >= AVDISCARD_BIDIR && ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_DISP_INTER && (stream_type == FLV_STREAM_TYPE_VIDEO)))
|| st->discard >= AVDISCARD_ALL
) { |
e4529df9 |
avio_seek(s->pb, next, SEEK_SET); |
0bac7a43 |
ret = FFERROR_REDO; |
3496a20b |
goto leave; |
e4529df9 |
} |
068f2a22 |
|
e4529df9 |
// if not streamed and no duration from metadata then seek to end to find
// the duration from the timestamps |
83548fe8 |
if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
(!s->duration || s->duration == AV_NOPTS_VALUE) && |
09f4822e |
!flv->searched_for_end) { |
15f14fc7 |
int size; |
e4529df9 |
const int64_t pos = avio_tell(s->pb); |
40665d27 |
// Read the last 4 bytes of the file, this should be the size of the
// previous FLV tag. Use the timestamp of its payload as duration. |
ae48547a |
int64_t fsize = avio_size(s->pb); |
231ffb92 |
retry_duration: |
e4529df9 |
avio_seek(s->pb, fsize - 4, SEEK_SET);
size = avio_rb32(s->pb); |
e4eb13ca |
if (size > 0 && size < fsize) {
// Seek to the start of the last FLV tag at position (fsize - 4 - size)
// but skip the byte indicating the type.
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; |
e5b5676c |
if (ts)
s->duration = ts * (int64_t)AV_TIME_BASE / 1000;
else if (fsize >= 8 && fsize - 8 >= size) {
fsize -= size+4;
goto retry_duration;
} |
231ffb92 |
} |
15f14fc7 |
} |
231ffb92 |
|
f59d8ff8 |
avio_seek(s->pb, pos, SEEK_SET); |
71a5cd7d |
flv->searched_for_end = 1; |
15f14fc7 |
}
|
ae48547a |
if (stream_type == FLV_STREAM_TYPE_AUDIO) { |
2215c39e |
int bits_per_coded_sample; |
e4529df9 |
channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
sample_rate = 44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >>
FLV_AUDIO_SAMPLERATE_OFFSET) >> 3; |
2215c39e |
bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8; |
9200514a |
if (!st->codecpar->channels || !st->codecpar->sample_rate ||
!st->codecpar->bits_per_coded_sample) {
st->codecpar->channels = channels;
st->codecpar->channel_layout = channels == 1 |
e4529df9 |
? AV_CH_LAYOUT_MONO
: AV_CH_LAYOUT_STEREO; |
9200514a |
st->codecpar->sample_rate = sample_rate;
st->codecpar->bits_per_coded_sample = bits_per_coded_sample; |
2f3d7ea9 |
} |
9200514a |
if (!st->codecpar->codec_id) {
flv_set_audio_codec(s, st, st->codecpar, |
e4529df9 |
flags & FLV_AUDIO_CODECID_MASK);
flv->last_sample_rate = |
9200514a |
sample_rate = st->codecpar->sample_rate; |
e4529df9 |
flv->last_channels = |
9200514a |
channels = st->codecpar->channels; |
2215c39e |
} else { |
9200514a |
AVCodecParameters *par = avcodec_parameters_alloc();
if (!par) {
ret = AVERROR(ENOMEM);
goto leave;
}
par->sample_rate = sample_rate;
par->bits_per_coded_sample = bits_per_coded_sample;
flv_set_audio_codec(s, st, par, flags & FLV_AUDIO_CODECID_MASK);
sample_rate = par->sample_rate;
avcodec_parameters_free(&par); |
068f2a22 |
} |
ae48547a |
} else if (stream_type == FLV_STREAM_TYPE_VIDEO) { |
98b3a797 |
int ret = flv_set_video_codec(s, st, flags & FLV_VIDEO_CODECID_MASK, 1);
if (ret < 0)
return ret;
size -= ret; |
3727cd54 |
} else if (stream_type == FLV_STREAM_TYPE_DATA) { |
6f69f7a8 |
st->codecpar->codec_id = AV_CODEC_ID_TEXT; |
bb01a3f0 |
}
|
9200514a |
if (st->codecpar->codec_id == AV_CODEC_ID_AAC || |
6f69f7a8 |
st->codecpar->codec_id == AV_CODEC_ID_H264 ||
st->codecpar->codec_id == AV_CODEC_ID_MPEG4) { |
e63a3628 |
int type = avio_r8(s->pb); |
04fd3e81 |
size--; |
279e3aaa |
if (size < 0) {
ret = AVERROR_INVALIDDATA;
goto leave;
}
|
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4) { |
e4529df9 |
// sign extension
int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000; |
ebd61055 |
pts = dts + cts; |
7da5ff5c |
if (cts < 0) { // dts might be wrong
if (!flv->wrong_dts)
av_log(s, AV_LOG_WARNING,
"Negative cts, previous timestamps might be wrong.\n"); |
ebd61055 |
flv->wrong_dts = 1; |
dbc3e110 |
} else if (FFABS(dts - pts) > 1000*60*15) {
av_log(s, AV_LOG_WARNING,
"invalid timestamps %"PRId64" %"PRId64"\n", dts, pts);
dts = pts = AV_NOPTS_VALUE; |
ebd61055 |
} |
04fd3e81 |
} |
6f69f7a8 |
if (type == 0 && (!st->codecpar->extradata || st->codecpar->codec_id == AV_CODEC_ID_AAC ||
st->codecpar->codec_id == AV_CODEC_ID_H264)) { |
419787a2 |
AVDictionaryEntry *t;
|
9200514a |
if (st->codecpar->extradata) { |
52c522c7 |
if ((ret = flv_queue_extradata(flv, s->pb, stream_type, size)) < 0) |
251f320f |
return ret; |
0bac7a43 |
ret = FFERROR_REDO; |
251f320f |
goto leave;
} |
6298eb81 |
if ((ret = flv_get_extradata(s, st, size)) < 0) |
04fd3e81 |
return ret; |
547f8345 |
|
419787a2 |
/* Workaround for buggy Omnia A/XE encoder */
t = av_dict_get(s->metadata, "Encoder", NULL, 0); |
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_AAC && t && !strcmp(t->value, "Omnia A/XE"))
st->codecpar->extradata_size = 2; |
419787a2 |
|
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_AAC && 0) { |
d2718187 |
MPEG4AudioConfig cfg; |
547f8345 |
|
6f69f7a8 |
if (avpriv_mpeg4audio_get_config(&cfg, st->codecpar->extradata,
st->codecpar->extradata_size * 8, 1) >= 0) { |
9200514a |
st->codecpar->channels = cfg.channels;
st->codecpar->channel_layout = 0; |
7d6096e4 |
if (cfg.ext_sample_rate) |
9200514a |
st->codecpar->sample_rate = cfg.ext_sample_rate; |
7d6096e4 |
else |
9200514a |
st->codecpar->sample_rate = cfg.sample_rate; |
1a3eb042 |
av_log(s, AV_LOG_TRACE, "mp4a config channels %d sample rate %d\n", |
6f69f7a8 |
st->codecpar->channels, st->codecpar->sample_rate); |
5500e653 |
} |
d2718187 |
}
|
0bac7a43 |
ret = FFERROR_REDO; |
527c2e64 |
goto leave; |
04fd3e81 |
}
}
|
fcb4228c |
/* skip empty data packets */ |
527c2e64 |
if (!size) { |
0bac7a43 |
ret = FFERROR_REDO; |
527c2e64 |
goto leave;
} |
fcb4228c |
|
e4529df9 |
ret = av_get_packet(s->pb, pkt, size); |
20044cd9 |
if (ret < 0)
return ret; |
e4529df9 |
pkt->dts = dts;
pkt->pts = pts == AV_NOPTS_VALUE ? dts : pts; |
d4f5d74a |
pkt->stream_index = st->index; |
a81494b6 |
pkt->pos = pos; |
52c522c7 |
if (flv->new_extradata[stream_type]) { |
251f320f |
uint8_t *side = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, |
52c522c7 |
flv->new_extradata_size[stream_type]); |
251f320f |
if (side) { |
52c522c7 |
memcpy(side, flv->new_extradata[stream_type],
flv->new_extradata_size[stream_type]);
av_freep(&flv->new_extradata[stream_type]);
flv->new_extradata_size[stream_type] = 0; |
251f320f |
}
} |
ae48547a |
if (stream_type == FLV_STREAM_TYPE_AUDIO &&
(sample_rate != flv->last_sample_rate || |
e4529df9 |
channels != flv->last_channels)) { |
2215c39e |
flv->last_sample_rate = sample_rate;
flv->last_channels = channels;
ff_add_param_change(pkt, channels, 0, sample_rate, 0, 0);
} |
115329f1 |
|
4c050429 |
if ( stream_type == FLV_STREAM_TYPE_AUDIO || |
0078430e |
((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY) || |
4c050429 |
stream_type == FLV_STREAM_TYPE_DATA) |
cc947f04 |
pkt->flags |= AV_PKT_FLAG_KEY; |
115329f1 |
|
527c2e64 |
leave: |
cbbd906b |
last = avio_rb32(s->pb); |
e8931d79 |
if (last != orig_size + 11 && last != orig_size + 10 && |
e0faad83 |
!avio_feof(s->pb) && |
9a099526 |
(last != orig_size || !last) && last != flv->sum_flv_tag_size && |
14f6c435 |
!flv->broken_sizes) { |
3f380b9b |
av_log(s, AV_LOG_ERROR, "Packet mismatch %d %d %d\n", last, orig_size + 11, flv->sum_flv_tag_size); |
cbbd906b |
avio_seek(s->pb, pos + 1, SEEK_SET);
ret = resync(s); |
c2f861ca |
av_packet_unref(pkt); |
cbbd906b |
if (ret >= 0) {
goto retry;
}
} |
d4f5d74a |
return ret;
}
|
fc8fa007 |
static int flv_read_seek(AVFormatContext *s, int stream_index, |
e4529df9 |
int64_t ts, int flags) |
fc8fa007 |
{ |
7e297a46 |
FLVContext *flv = s->priv_data;
flv->validate_count = 0; |
ff1ec0c3 |
return avio_seek_time(s->pb, stream_index, ts, flags); |
fc8fa007 |
}
|
5b54a90c |
#define OFFSET(x) offsetof(FLVContext, x)
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = { |
43ecec0f |
{ "flv_metadata", "Allocate streams according to the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD }, |
07793962 |
{ "missing_streams", "", OFFSET(missing_streams), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xFF, VD | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, |
5b54a90c |
{ NULL }
};
|
0915b531 |
static const AVClass flv_class = { |
5b54a90c |
.class_name = "flvdec",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
|
66355be3 |
AVInputFormat ff_flv_demuxer = { |
dfc2c4d9 |
.name = "flv", |
0177b7d2 |
.long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"), |
dfc2c4d9 |
.priv_data_size = sizeof(FLVContext),
.read_probe = flv_probe,
.read_header = flv_read_header,
.read_packet = flv_read_packet, |
20234a4b |
.read_seek = flv_read_seek,
.read_close = flv_read_close,
.extensions = "flv", |
0915b531 |
.priv_class = &flv_class, |
d4f5d74a |
}; |
2fbdfba0 |
static const AVClass live_flv_class = { |
dc5972f8 |
.class_name = "live_flvdec", |
2fbdfba0 |
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVInputFormat ff_live_flv_demuxer = {
.name = "live_flv",
.long_name = NULL_IF_CONFIG_SMALL("live RTMP FLV (Flash Video)"),
.priv_data_size = sizeof(FLVContext),
.read_probe = live_flv_probe,
.read_header = flv_read_header,
.read_packet = flv_read_packet,
.read_seek = flv_read_seek,
.read_close = flv_read_close,
.extensions = "flv",
.priv_class = &live_flv_class,
.flags = AVFMT_TS_DISCONT
}; |