21 #ifndef AVFORMAT_AVFORMAT_H 22 #define AVFORMAT_AVFORMAT_H 455 #define AVPROBE_SCORE_RETRY (AVPROBE_SCORE_MAX/4) 456 #define AVPROBE_SCORE_STREAM_RETRY (AVPROBE_SCORE_MAX/4-1) 458 #define AVPROBE_SCORE_EXTENSION 50 459 #define AVPROBE_SCORE_MIME 75
460 #define AVPROBE_SCORE_MAX 100
462 #define AVPROBE_PADDING_SIZE 32 465 #define AVFMT_NOFILE 0x0001 466 #define AVFMT_NEEDNUMBER 0x0002 467 #define AVFMT_SHOW_IDS 0x0008 468 #define AVFMT_GLOBALHEADER 0x0040 469 #define AVFMT_NOTIMESTAMPS 0x0080 470 #define AVFMT_GENERIC_INDEX 0x0100 471 #define AVFMT_TS_DISCONT 0x0200 472 #define AVFMT_VARIABLE_FPS 0x0400 473 #define AVFMT_NODIMENSIONS 0x0800 474 #define AVFMT_NOSTREAMS 0x1000 475 #define AVFMT_NOBINSEARCH 0x2000 476 #define AVFMT_NOGENSEARCH 0x4000 477 #define AVFMT_NO_BYTE_SEEK 0x8000 478 #define AVFMT_ALLOW_FLUSH 0x10000 479 #define AVFMT_TS_NONSTRICT 0x20000 482 #define AVFMT_TS_NEGATIVE 0x40000 491 #define AVFMT_SEEK_TO_PTS 0x4000000 504 const char *long_name;
506 const char *extensions;
566 int64_t *dts, int64_t *wall);
571 void *
data,
size_t data_size);
645 const char *long_name;
659 const char *extensions;
731 int stream_index, int64_t timestamp,
int flags);
738 int64_t *pos, int64_t pos_limit);
758 int (*read_seek2)(
struct AVFormatContext *
s,
int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts,
int flags);
801 #define AVINDEX_KEYFRAME 0x0001 802 #define AVINDEX_DISCARD_FRAME 0x0002 810 #define AV_DISPOSITION_DEFAULT 0x0001 811 #define AV_DISPOSITION_DUB 0x0002 812 #define AV_DISPOSITION_ORIGINAL 0x0004 813 #define AV_DISPOSITION_COMMENT 0x0008 814 #define AV_DISPOSITION_LYRICS 0x0010 815 #define AV_DISPOSITION_KARAOKE 0x0020 822 #define AV_DISPOSITION_FORCED 0x0040 823 #define AV_DISPOSITION_HEARING_IMPAIRED 0x0080 824 #define AV_DISPOSITION_VISUAL_IMPAIRED 0x0100 825 #define AV_DISPOSITION_CLEAN_EFFECTS 0x0200 833 #define AV_DISPOSITION_ATTACHED_PIC 0x0400 838 #define AV_DISPOSITION_TIMED_THUMBNAILS 0x0800 845 #define AV_DISPOSITION_CAPTIONS 0x10000 846 #define AV_DISPOSITION_DESCRIPTIONS 0x20000 847 #define AV_DISPOSITION_METADATA 0x40000 848 #define AV_DISPOSITION_DEPENDENT 0x80000 853 #define AV_PTS_WRAP_IGNORE 0 854 #define AV_PTS_WRAP_ADD_OFFSET 1
855 #define AV_PTS_WRAP_SUB_OFFSET -1
872 #if FF_API_LAVF_AVCTX 978 #define AVSTREAM_EVENT_FLAG_METADATA_UPDATED 0x0001 990 #if FF_API_LAVF_FFSERVER 999 char *recommended_encoder_configuration;
1023 #define MAX_STD_TIMEBASES (30*12+30+3+6) 1029 int64_t duration_gcd;
1031 int64_t rfps_duration_sum;
1033 int64_t codec_info_duration;
1034 int64_t codec_info_duration_fields;
1035 int frame_delay_evidence;
1044 int64_t last_duration;
1049 int64_t fps_first_dts;
1050 int fps_first_dts_idx;
1051 int64_t fps_last_dts;
1052 int fps_last_dts_idx;
1068 int64_t last_IP_pts;
1069 int last_IP_duration;
1079 int codec_info_nb_frames;
1090 #define MAX_REORDER_DELAY 16 1095 int nb_index_entries;
1096 unsigned int index_entries_allocated_size;
1103 int stream_identifier;
1105 int64_t interleaver_chunk_size;
1106 int64_t interleaver_chunk_duration;
1120 int skip_to_keyframe;
1134 int64_t start_skip_samples;
1142 int64_t first_discard_sample;
1149 int64_t last_discard_sample;
1155 int nb_decoded_frames;
1161 int64_t mux_ts_offset;
1166 int64_t pts_wrap_reference;
1178 int pts_wrap_behavior;
1183 int update_initial_durations_done;
1194 int64_t last_dts_for_order_check;
1201 int inject_global_side_data;
1217 #if FF_API_FORMAT_GET_SET 1226 #if FF_API_LAVF_FFSERVER 1228 char* av_stream_get_recommended_encoder_configuration(
const AVStream *
s);
1230 void av_stream_set_recommended_encoder_configuration(
AVStream *
s,
char *configuration);
1243 #define AV_PROGRAM_RUNNING 1 1255 unsigned int *stream_index;
1256 unsigned int nb_stream_indexes;
1273 int64_t pts_wrap_reference;
1274 int pts_wrap_behavior;
1277 #define AVFMTCTX_NOHEADER 0x0001 1279 #define AVFMTCTX_UNSEEKABLE 0x0002 1297 void *
data,
size_t data_size);
1398 #if FF_API_FORMAT_FILENAME 1452 unsigned int packet_size;
1460 #define AVFMT_FLAG_GENPTS 0x0001 1461 #define AVFMT_FLAG_IGNIDX 0x0002
1462 #define AVFMT_FLAG_NONBLOCK 0x0004
1463 #define AVFMT_FLAG_IGNDTS 0x0008
1464 #define AVFMT_FLAG_NOFILLIN 0x0010
1465 #define AVFMT_FLAG_NOPARSE 0x0020
1466 #define AVFMT_FLAG_NOBUFFER 0x0040
1467 #define AVFMT_FLAG_CUSTOM_IO 0x0080
1468 #define AVFMT_FLAG_DISCARD_CORRUPT 0x0100
1469 #define AVFMT_FLAG_FLUSH_PACKETS 0x0200
1476 #define AVFMT_FLAG_BITEXACT 0x0400 1477 #define AVFMT_FLAG_MP4A_LATM 0x8000 1478 #define AVFMT_FLAG_SORT_DTS 0x10000
1479 #define AVFMT_FLAG_PRIV_OPT 0x20000
1480 #if FF_API_LAVF_KEEPSIDE_FLAG
1481 #define AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 1483 #define AVFMT_FLAG_FAST_SEEK 0x80000 1484 #define AVFMT_FLAG_SHORTEST 0x100000
1485 #define AVFMT_FLAG_AUTO_BSF 0x200000
1500 int64_t max_analyze_duration;
1505 unsigned int nb_programs;
1536 unsigned int max_index_size;
1542 unsigned int max_picture_buffer;
1555 unsigned int nb_chapters;
1579 int64_t start_time_realtime;
1593 int error_recognition;
1610 #define FF_FDEBUG_TS 0x0001 1628 int64_t max_interleave_delta;
1634 int strict_std_compliance;
1642 #define AVFMT_EVENT_FLAG_METADATA_UPDATED 0x0001 1657 int avoid_negative_ts;
1658 #define AVFMT_AVOID_NEG_TS_AUTO -1 1659 #define AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE 1
1660 #define AVFMT_AVOID_NEG_TS_MAKE_ZERO 2
1682 int max_chunk_duration;
1698 int use_wallclock_as_timestamps;
1720 int64_t skip_initial_bytes;
1727 unsigned int correct_ts_overflow;
1757 int format_probesize;
1765 char *codec_whitelist;
1773 char *format_whitelist;
1787 int io_repositioned;
1826 int metadata_header_padding;
1843 int64_t output_ts_offset;
1859 #if FF_API_OLD_OPEN_CALLBACKS 1931 #if FF_API_FORMAT_GET_SET 1966 #if FF_API_OLD_OPEN_CALLBACKS 2025 void av_register_all(
void);
2258 const char *url,
void *logctx,
2259 unsigned int offset,
unsigned int max_probe_size);
2265 const char *url,
void *logctx,
2266 unsigned int offset,
unsigned int max_probe_size);
2355 int wanted_stream_nb,
2472 #define AVSEEK_FLAG_BACKWARD 1 2473 #define AVSEEK_FLAG_BYTE 2
2474 #define AVSEEK_FLAG_ANY 4
2475 #define AVSEEK_FLAG_FRAME 8
2482 #define AVSTREAM_INIT_IN_WRITE_HEADER 0 2483 #define AVSTREAM_INIT_IN_INIT_OUTPUT 1
2699 int64_t *dts, int64_t *wall);
2843 char *authorization,
int authorization_size,
2844 char *hostname,
int hostname_size,
2846 char *path,
int path_size,
2866 #define AV_FRAME_FILENAME_FLAGS_MULTIPLE 1 2882 const char *path,
int number,
int flags);
2885 const char *path,
int number);
2934 int std_compliance);
3037 #if FF_API_R_FRAME_RATE 3038 AVFMT_TBCF_R_FRAMERATE,
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
void av_pkt_dump2(FILE *f, const AVPacket *pkt, int dump_payload, const AVStream *st)
Send a nice dump of a packet to the specified file stream.
static const char * format[]
attribute_deprecated int av_demuxer_open(AVFormatContext *ic)
This structure describes decoded (raw) audio or video data.
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
static void flush(AVCodecContext *avctx)
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.
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
static av_cold int init(AVCodecContext *avctx)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
Guess the sample aspect ratio of a frame, based on both the stream and the frame aspect ratio...
int av_get_output_timestamp(struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall)
Get timing information for the data currently output.
AVInputFormat * av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
Guess the file format.
int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
Test whether a muxer supports uncoded frame.
This struct describes the properties of an encoded stream.
AVRational av_guess_frame_rate(AVFormatContext *ctx, AVStream *stream, AVFrame *frame)
Guess the frame rate, based on both the container and codec information.
static int query_codec(enum AVCodecID id, int std_compliance)
const struct AVCodecTag * avformat_get_mov_audio_tags(void)
static int64_t start_time
const struct AVCodecTag * avformat_get_riff_video_tags(void)
enum AVCodecID av_codec_get_id(const struct AVCodecTag *const *tags, unsigned int tag)
Get the AVCodecID for the given codec tag tag.
unsigned avformat_version(void)
Return the LIBAVFORMAT_VERSION_INT constant.
const char * avformat_license(void)
Return the libavformat license.
int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt, AVStream *ost, const AVStream *ist, enum AVTimebaseSource copy_tb)
Transfer internal timing information from one stream to another.
static av_cold int end(AVCodecContext *avctx)
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the stream st contained in s is matched by the stream specifier spec.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
int av_codec_get_tag2(const struct AVCodecTag *const *tags, enum AVCodecID id, unsigned int *tag)
Get the codec tag for the given codec id.
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
void av_pkt_dump_log2(void *avcl, int level, const AVPacket *pkt, int dump_payload, const AVStream *st)
Send a nice dump of a packet to the log.
const char * avformat_configuration(void)
Return the libavformat build-time configuration.
AVProgram * av_new_program(AVFormatContext *s, int id)
char * protocol_whitelist
',' separated list of allowed protocols.
int avformat_network_init(void)
Do global initialization of network libraries.
const struct AVCodecTag * avformat_get_riff_audio_tags(void)
static av_cold int read_close(AVFormatContext *ctx)
int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
Generate an SDP for an RTP session.
int av_match_ext(const char *filename, const char *extensions)
Return a positive value if the given filename has one of the given extensions, 0 otherwise.
const AVClass * avformat_get_class(void)
Get the AVClass for AVFormatContext.
int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size)
Probe a bytestream to determine the input format.
static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
Interleave an AVPacket correctly so it can be muxed.
const AVOutputFormat * av_muxer_iterate(void **opaque)
Iterate over all registered muxers.
const struct AVCodecTag * avformat_get_mov_video_tags(void)
void av_dump_format(AVFormatContext *ic, int index, const char *url, int is_output)
Print detailed information about the input or output format, such as duration, bitrate, streams, container, programs, metadata, side data, codec and time base.
Callback for checking whether to abort blocking functions.
int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec **decoder_ret, int flags)
Find the "best" stream in the file.
AVRational av_stream_get_codec_timebase(const AVStream *st)
Get the internal codec timebase from a stream.
int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size)
Like av_probe_input_buffer2() but returns 0 on success.
AVProgram * av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
Find the programs which belong to a given stream.
AVCodecID
Identify the syntax and semantics of the bitstream.
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
const AVIOInterruptCB int_cb
void av_hex_dump(FILE *f, const uint8_t *buf, int size)
Send a nice hexadecimal dump of a buffer to the specified file stream.
struct AVCodecParser * parser
char * url
input or output URL.
int av_read_play(AVFormatContext *s)
Start playing a network-based stream (e.g.
static const uint8_t offset[127][2]
New fields can be added to the end with minor version bumps.
AVInputFormat * av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
Guess the file format.
int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
Test if the given container can store a codec.
static float distance(float x, float y, int band)
const char * mime_type
mime_type, when known.
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 av_read_pause(AVFormatContext *s)
Pause a network-based stream (e.g.
AVInputFormat * av_find_input_format(const char *short_name)
Find AVInputFormat based on the short name of the input format.
static void callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType devtype)
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as stream side data.
enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, const char *filename, const char *mime_type, enum AVMediaType type)
Guess the codec ID based upon muxer and filename.
int max_streams
The maximum number of streams.
int av_find_default_stream_index(AVFormatContext *s)
static int write_trailer(AVFormatContext *s1)
uint8_t * av_stream_new_side_data(AVStream *stream, enum AVPacketSideDataType type, int size)
Allocate new information from stream.
AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
av_warn_unused_result int avformat_init_output(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and initialize the codec, but do not write the header.
const AVInputFormat * av_demuxer_iterate(void **opaque)
Iterate over all registered demuxers.
int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
int avformat_queue_attached_pictures(AVFormatContext *s)
int avformat_network_deinit(void)
Undo the initialization done by avformat_network_init.
static AVInputFormat * iformat
Libavcodec external API header.
typedef void(RENAME(mix_any_func_type))
AVIOContext * pb
I/O context.
main external API structure.
int av_filename_number_test(const char *filename)
Check whether filename actually is a numbered sequence generator.
int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
Return in 'buf' the path with 'd' replaced by a number.
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
static const AVClass av_class
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
This structure contains the data a format has to probe a file.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
Seek to timestamp ts.
#define av_warn_unused_result
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
const OptionDef options[]
int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index, AVFrame *frame)
Write an uncoded frame to an output media file.
struct AVPacketList * next
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
int av_write_uncoded_frame(AVFormatContext *s, int stream_index, AVFrame *frame)
Write an uncoded frame to an output media file.
static void write_header(FFV1Context *f)
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
#define attribute_deprecated
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
char * protocol_blacklist
',' separated list of disallowed protocols.
int avformat_flush(AVFormatContext *s)
Discard all internally buffered data.
static int format_name(char *buf, int buf_len, int index)
void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
Send a nice hexadecimal dump of a buffer to the log.
unsigned int av_codec_get_tag(const struct AVCodecTag *const *tags, enum AVCodecID id)
Get the codec tag for the given codec id id.
AVInputFormat * av_probe_input_format(AVProbeData *pd, int is_opened)
Guess the file format.
Following API allows user to probe device capabilities (supported codecs, pixel formats, sample formats, resolutions, channel counts, etc).
This structure stores compressed data.