21 #ifndef AVFORMAT_AVFORMAT_H 22 #define AVFORMAT_AVFORMAT_H 382 typedef struct AVFrac {
383 int64_t val, num, den;
402 #define AVPROBE_SCORE_EXTENSION 50 403 #define AVPROBE_SCORE_MIME 75 404 #define AVPROBE_SCORE_MAX 100 406 #define AVPROBE_PADDING_SIZE 32 408 #define AVFMT_NOFILE 0x0001 410 #define AVFMT_NEEDNUMBER 0x0002 411 #define AVFMT_SHOW_IDS 0x0008 412 #define AVFMT_RAWPICTURE 0x0020 414 #define AVFMT_GLOBALHEADER 0x0040 415 #define AVFMT_NOTIMESTAMPS 0x0080 416 #define AVFMT_GENERIC_INDEX 0x0100 417 #define AVFMT_TS_DISCONT 0x0200 418 #define AVFMT_VARIABLE_FPS 0x0400 419 #define AVFMT_NODIMENSIONS 0x0800 420 #define AVFMT_NOSTREAMS 0x1000 421 #define AVFMT_NOBINSEARCH 0x2000 422 #define AVFMT_NOGENSEARCH 0x4000 423 #define AVFMT_NO_BYTE_SEEK 0x8000 424 #define AVFMT_ALLOW_FLUSH 0x10000 425 #define AVFMT_TS_NONSTRICT 0x20000 428 #define AVFMT_TS_NEGATIVE 0x40000 438 typedef struct AVOutputFormat { 445 const char *long_name;
446 const char *mime_type;
447 const char *extensions;
503 int (*query_codec)(
enum AVCodecID id,
int std_compliance);
525 const char *long_name;
539 const char *extensions;
550 const char *mime_type;
611 int stream_index, int64_t timestamp,
int flags);
618 int64_t *pos, int64_t pos_limit);
655 #define AVINDEX_KEYFRAME 0x0001 661 #define AV_DISPOSITION_DEFAULT 0x0001 662 #define AV_DISPOSITION_DUB 0x0002 663 #define AV_DISPOSITION_ORIGINAL 0x0004 664 #define AV_DISPOSITION_COMMENT 0x0008 665 #define AV_DISPOSITION_LYRICS 0x0010 666 #define AV_DISPOSITION_KARAOKE 0x0020 673 #define AV_DISPOSITION_FORCED 0x0040 674 #define AV_DISPOSITION_HEARING_IMPAIRED 0x0080 675 #define AV_DISPOSITION_VISUAL_IMPAIRED 0x0100 676 #define AV_DISPOSITION_CLEAN_EFFECTS 0x0200 683 #define AV_DISPOSITION_ATTACHED_PIC 0x0400 812 #define AVSTREAM_EVENT_FLAG_METADATA_UPDATED 0x0001 825 #define MAX_STD_TIMEBASES (60*12+5) 827 int nb_decoded_frames;
833 int64_t fps_first_dts;
834 int fps_first_dts_idx;
835 int64_t fps_last_dts;
836 int fps_last_dts_idx;
846 int last_IP_duration;
851 #define MAX_PROBE_PACKETS 2500 857 int codec_info_nb_frames;
868 #define MAX_REORDER_DELAY 16 873 int nb_index_entries;
874 unsigned int index_entries_allocated_size;
877 #define AV_PROGRAM_RUNNING 1 889 unsigned int *stream_index;
890 unsigned int nb_stream_indexes;
894 #define AVFMTCTX_NOHEADER 0x0001 897 typedef struct AVChapter { 970 unsigned int nb_streams;
1018 unsigned int packet_size;
1026 #define AVFMT_FLAG_GENPTS 0x0001 1027 #define AVFMT_FLAG_IGNIDX 0x0002 1028 #define AVFMT_FLAG_NONBLOCK 0x0004 1029 #define AVFMT_FLAG_IGNDTS 0x0008 1030 #define AVFMT_FLAG_NOFILLIN 0x0010 1031 #define AVFMT_FLAG_NOPARSE 0x0020 1032 #define AVFMT_FLAG_NOBUFFER 0x0040 1033 #define AVFMT_FLAG_CUSTOM_IO 0x0080 1034 #define AVFMT_FLAG_DISCARD_CORRUPT 0x0100 1035 #define AVFMT_FLAG_FLUSH_PACKETS 0x0200 1042 #define AVFMT_FLAG_BITEXACT 0x0400 1049 unsigned int probesize;
1056 int max_analyze_duration;
1061 unsigned int nb_programs;
1092 unsigned int max_index_size;
1098 unsigned int max_picture_buffer;
1111 unsigned int nb_chapters;
1130 int64_t start_time_realtime;
1144 int error_recognition;
1161 #define FF_FDEBUG_TS 0x0001 1179 int64_t max_interleave_delta;
1185 int strict_std_compliance;
1193 #define AVFMT_EVENT_FLAG_METADATA_UPDATED 0x0001 1212 int64_t data_offset;
1230 #define RAW_PACKET_BUFFER_SIZE 2500000 1231 int raw_packet_buffer_remaining_size;
1430 const char *filename,
void *logctx,
1431 unsigned int offset,
unsigned int max_probe_size);
1503 int wanted_stream_nb,
1601 #define AVSEEK_FLAG_BACKWARD 1 1602 #define AVSEEK_FLAG_BYTE 2 1603 #define AVSEEK_FLAG_ANY 4 1604 #define AVSEEK_FLAG_FRAME 8 1718 const char *filename,
1719 const char *mime_type);
1725 const char *filename,
const char *mime_type,
1857 char *authorization,
int authorization_size,
1858 char *hostname,
int hostname_size,
1860 char *path,
int path_size,
1892 const char *path,
int number);
1928 int av_match_ext(
const char *filename,
const char *extensions);
1941 int std_compliance);
uint8_t * mime_type
mime_type, when known.
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.
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
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 avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
Send a nice dump of a packet to the specified file stream.
uint8_t * av_stream_get_side_data(AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
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_dlog(ac->avr, "%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-> out
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.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
const char * avformat_configuration(void)
Return the libavformat build-time configuration.
AVProgram * av_new_program(AVFormatContext *s, int id)
int avformat_network_init(void)
Do global initialization of network components.
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.
static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
Interleave an AVPacket correctly so it can be muxed.
const OptionDef options[]
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.
static int64_t start_time
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.
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
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_dlog(ac->avr, "%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
int av_read_play(AVFormatContext *s)
Start playing a network-based stream (e.g.
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)
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.
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 av_find_default_stream_index(AVFormatContext *s)
int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt, const char *filename, void *logctx, unsigned int offset, unsigned int max_probe_size)
Probe a bytestream to determine the input format.
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...
void av_register_input_format(AVInputFormat *format)
AVOutputFormat * av_oformat_next(const AVOutputFormat *f)
If f is NULL, returns the first registered output format, if f is non-NULL, returns the next register...
int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
Return in 'buf' the path with 'd' replaced by a number.
static int read_header(FFV1Context *f)
void av_register_output_format(AVOutputFormat *format)
int avformat_network_deinit(void)
Undo the initialization done by avformat_network_init.
Libavcodec external API header.
main external API structure.
int av_filename_number_test(const char *filename)
Check whether filename actually is a numbered sequence generator.
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Describe the class of an AVClass context structure.
rational number numerator/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 attribute_deprecated
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
struct AVPacketList * next
static AVInputFormat * iformat
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
static void write_header(FFV1Context *f)
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload, AVStream *st)
Send a nice dump of a packet to the log.
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.
This structure stores compressed data.
void av_register_all(void)
Initialize libavformat and register all the muxers, demuxers and protocols.
AVInputFormat * av_iformat_next(const AVInputFormat *f)
If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registere...