40 #define VALIDATE_INDEX_TS_THRESH 2500
42 #define RESYNC_BUFFER_SIZE (1<<20)
83 d[3] < 5 && d[5] == 0 &&
86 int is_live = !memcmp(d + offset + 40,
"NGINX RTMP", 10);
175 switch (flv_codecid) {
178 codec_id = bits_per_coded_sample == 8
187 codec_id = bits_per_coded_sample == 8
217 switch (flv_codecid) {
281 switch (flv_codecid) {
300 int flv_codecid,
int read)
305 switch (flv_codecid) {
359 if (length >= buffsize) {
374 unsigned int timeslen = 0, fileposlen = 0, i;
376 int64_t *times =
NULL;
377 int64_t *filepositions =
NULL;
393 int64_t **current_array;
394 unsigned int arraylen;
405 current_array = ×
409 current_array = &filepositions;
410 fileposlen = arraylen;
416 if (!(*current_array =
av_mallocz(
sizeof(**current_array) * arraylen))) {
421 for (i = 0; i < arraylen &&
avio_tell(ioc) < max_pos - 1; i++) {
426 if (times && filepositions) {
434 if (timeslen == fileposlen && fileposlen>1 && max_pos <= filepositions[0]) {
435 for (i = 0; i <
FFMIN(2,fileposlen); i++) {
444 filepositions =
NULL;
521 av_log(s,
AV_LOG_ERROR,
"Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_MIXEDARRAY, found %d\n", v);
528 unsigned int arraylen, i;
531 for (i = 0; i < arraylen &&
avio_tell(ioc) < max_pos - 1; i++)
553 if (!strcmp(key,
"duration"))
555 else if (!strcmp(key,
"videodatarate") &&
556 0 <= (
int)(num_val * 1024.0))
558 else if (!strcmp(key,
"audiodatarate") &&
559 0 <= (
int)(num_val * 1024.0))
561 else if (!strcmp(key,
"datastream")) {
566 }
else if (!strcmp(key,
"framerate")) {
571 if (!strcmp(key,
"videocodecid") && vpar) {
575 }
else if (!strcmp(key,
"audiocodecid") && apar) {
578 }
else if (!strcmp(key,
"audiosamplerate") && apar) {
580 }
else if (!strcmp(key,
"audiosamplesize") && apar) {
582 }
else if (!strcmp(key,
"stereo") && apar) {
587 }
else if (!strcmp(key,
"width") && vpar) {
588 vpar->
width = num_val;
589 }
else if (!strcmp(key,
"height") && vpar) {
595 if (!strcmp(key,
"encoder")) {
597 if (1 == sscanf(str_val,
"Open Broadcaster Software v0.%d", &version)) {
598 if (version > 0 && version <= 655)
601 }
else if (!strcmp(key,
"metadatacreator") && !strcmp(str_val,
"MEGA")) {
608 ((!apar && !strcmp(key,
"audiocodecid")) ||
609 (!vpar && !strcmp(key,
"videocodecid"))))
612 if (!strcmp(key,
"duration") ||
613 !strcmp(key,
"filesize") ||
614 !strcmp(key,
"width") ||
615 !strcmp(key,
"height") ||
616 !strcmp(key,
"videodatarate") ||
617 !strcmp(key,
"framerate") ||
618 !strcmp(key,
"videocodecid") ||
619 !strcmp(key,
"audiodatarate") ||
620 !strcmp(key,
"audiosamplerate") ||
621 !strcmp(key,
"audiosamplesize") ||
622 !strcmp(key,
"stereo") ||
623 !strcmp(key,
"audiocodecid") ||
624 !strcmp(key,
"datastream"))
629 av_strlcpy(str_val, num_val > 0 ?
"true" :
"false",
633 snprintf(str_val,
sizeof(str_val),
"%.f", num_val);
642 #define TYPE_ONTEXTDATA 1
643 #define TYPE_ONCAPTION 2
644 #define TYPE_ONCAPTIONINFO 3
645 #define TYPE_UNKNOWN 9
651 AVStream *stream, *astream, *vstream;
670 if (!strcmp(buffer,
"onTextData"))
673 if (!strcmp(buffer,
"onCaption"))
676 if (!strcmp(buffer,
"onCaptionInfo"))
679 if (strcmp(buffer,
"onMetaData") && strcmp(buffer,
"onCuePoint")) {
712 int pre_tag_size = 0;
731 av_log(s,
AV_LOG_WARNING,
"Read FLV header error, input file is not a standard flv format, first PreviousTagSize0 always is 0\n");
777 "Found invalid index entries, clearing the index.\n");
791 int nb = -1, ret, parse_name = 1;
831 int64_t dts, int64_t next)
851 while (array || (ret =
amf_get_string(pb, buf,
sizeof(buf))) > 0) {
911 if (lsize2 >= 11 && lsize2 + 8LL <
FFMIN(i, RESYNC_BUFFER_SIZE)) {
914 if (lsize1 >= 11 && lsize1 + 8LL + lsize2 <
FFMIN(i, RESYNC_BUFFER_SIZE)) {
916 if (size1 == lsize1 - 11 && size2 == lsize2 - 11) {
917 avio_seek(s->
pb, pos + i - lsize1 - lsize2 - 8, SEEK_SET);
933 int64_t next, pos, meta_pos;
950 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));
958 if (pos == validate_pos) {
966 }
else if (pos > validate_pos) {
991 if (size > 13 + 1 + 4) {
995 if (type == 0 && dts == 0 || type < 0 || type ==
TYPE_UNKNOWN) {
1014 "Skipping flv packet: type %d, size %d, flags %d.\n",
1080 if (size > 0 && size < fsize) {
1089 else if (fsize >= 8 && fsize - 8 >= size) {
1091 goto retry_duration;
1101 int bits_per_coded_sample;
1155 "Negative cts, previous timestamps might be wrong.\n");
1157 }
else if (
FFABS(dts - pts) > 1000*60*15) {
1159 "invalid timestamps %"PRId64
" %"PRId64
"\n", dts, pts);
1240 if (last != orig_size + 11 && last != orig_size + 10 &&
1256 int64_t ts,
int flags)
1263 #define OFFSET(x) offsetof(FLVContext, x)
1264 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1266 {
"flv_metadata",
"Allocate streams according to the onMetaData array",
OFFSET(trust_metadata),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1,
VD },
1287 .extensions =
"flv",
1288 .priv_class = &flv_class,
1307 .extensions =
"flv",
1308 .priv_class = &live_flv_class,
discard all frames except keyframes
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t avio_size(AVIOContext *s)
Get the filesize.
#define AV_OPT_FLAG_EXPORT
The option is intended for exporting values to the caller.
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
#define AV_LOG_WARNING
Something somehow does not look correct.
static const int32_t max_pos[4]
Size of the MP-MLQ fixed excitation codebooks.
#define LIBAVUTIL_VERSION_INT
int64_t pos
byte position in stream, -1 if unknown
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int index
stream index in AVFormatContext
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
enum AVMediaType codec_type
int event_flags
Flags for the user to detect events happening on the file.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
#define AV_CH_LAYOUT_STEREO
unsigned int avio_rb16(AVIOContext *s)
int ctx_flags
Flags signalling stream properties.
This struct describes the properties of an encoded stream.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static av_always_inline double av_int2double(uint64_t i)
Reinterpret a 64-bit integer as a double.
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
unsigned int avio_rb32(AVIOContext *s)
int wrong_dts
wrong dts due to negative cts
enum AVStreamParseType need_parsing
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
AVStream ** streams
A list of all streams in the file.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int flags
Flags modifying the (de)muxer behaviour.
#define AVERROR_EOF
End of file.
static av_cold int read_close(AVFormatContext *ctx)
uint64_t avio_rb64(AVIOContext *s)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int trust_metadata
configure streams according onMetaData
enum AVCodecID video_codec_id
Forced video codec_id.
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
AVCodecID
Identify the syntax and semantics of the bitstream.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVDictionary * metadata
Metadata that applies to the whole file.
struct FLVContext::@208 validate_index[2]
discard all bidirectional frames
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
preferred ID for decoding MPEG audio layer 1, 2 or 3
enum AVMediaType codec_type
General type of the encoded data.
int64_t * keyframe_filepositions
static const uint8_t offset[127][2]
AVRational avg_frame_rate
Average framerate.
void avcodec_parameters_free(AVCodecParameters **par)
Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied p...
uint8_t * new_extradata[FLV_STREAM_TYPE_NB]
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
uint8_t resync_buffer[2 *RESYNC_BUFFER_SIZE]
int flags
A combination of AV_PKT_FLAG values.
int extradata_size
Size of the extradata content in bytes.
int avio_r8(AVIOContext *s)
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
int last_keyframe_stream_index
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
audio channel layout utility functions
unsigned int avio_rb24(AVIOContext *s)
#define AV_TIME_BASE
Internal time base represented as integer.
enum AVCodecID audio_codec_id
Forced audio codec_id.
int new_extradata_size[FLV_STREAM_TYPE_NB]
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
AVStreamInternal * internal
An opaque field for libavformat internal usage.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
AVIOContext * pb
I/O context.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
int need_context_update
Whether the internal avctx needs to be updated from codecpar (after a late change to codecpar) ...
This structure contains the data a format has to probe a file.
static int64_t pts
Global timestamp for the audio frames.
int64_t start_time
Position of the first frame of the component, in AV_TIME_BASE fractional seconds. ...
AVRational av_d2q(double d, int max)
Convert a double precision floating point number to a rational.
int sample_rate
Audio only.
int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int bit_size, int sync_extension)
Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration. ...
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
int64_t avio_seek_time(AVIOContext *h, int stream_index, int64_t timestamp, int flags)
Seek to a given timestamp relative to some component stream.
int eof_reached
true if eof reached
void * priv_data
Format private data.
#define AV_OPT_FLAG_READONLY
The option may not be set through the AVOptions API, only read.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
static int array[MAX_W *MAX_W]
AVCodecParameters * codecpar
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
static int64_t fsize(FILE *f)
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
#define AV_CH_LAYOUT_MONO
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define AV_NOPTS_VALUE
Undefined timestamp value.