#include <stdint.h>
#include "libavcodec/avcodec.h"
#include "libavcodec/bsf.h"
#include "libavcodec/packet_internal.h"
#include "avformat.h"
#include "os_support.h"

Data Structures
struct	AVCodecTag

struct	CodecMime

struct	FFFrac
	The exact value of the fractional number is: 'val + num / den'. More...

struct	FFFormatContext

struct	FFStream

Macros
#define	MAX_URL_SIZE 4096

#define	PROBE_BUF_MIN 2048
	size of probe buffer, for guessing file type from file contents More...

#define	PROBE_BUF_MAX (1 << 20)

#define	hex_dump_debug(class, buf, size) do { if (0) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size); } while(0)

#define	FF_FMT_INIT_CLEANUP (1 << 0)
	For an AVInputFormat with this flag set read_close() needs to be called by the caller upon read_header() failure. More...

#define	MAX_STD_TIMEBASES (30*12+30+3+6)

#define	MAX_REORDER_DELAY 16

#define	dynarray_add(tab, nb_ptr, elem)

#define	RELATIVE_TS_BASE (INT64_MAX - (1LL << 48))

#define	NTP_OFFSET 2208988800ULL

#define	NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)

#define	SPACE_CHARS " \t\r\n"

#define	FFERROR_REDO FFERRTAG('R','E','D','O')
	Returned by demuxers to indicate that data was consumed but discarded (ignored streams or junk data). More...

#define	CONTAINS_PAL 2

Typedefs
typedef void(*	ff_parse_key_val_cb) (void context, const char key, int key_len, char *dest, int dest_len)
	Callback function type for ff_parse_key_value. More...

Enumerations
enum	AVWriteUncodedFrameFlags { AV_WRITE_UNCODED_FRAME_QUERY = 0x0001 }
	Flags for AVFormatContext.write_uncoded_frame() More...

Functions
static av_always_inline FFFormatContext *	ffformatcontext (AVFormatContext *s)

static av_always_inline FFStream *	ffstream (AVStream *st)

static const av_always_inline FFStream *	cffstream (const AVStream *st)

void	avpriv_stream_set_need_parsing (AVStream *st, enum AVStreamParseType type)

static av_always_inline int	is_relative (int64_t ts)

int64_t	ff_wrap_timestamp (const AVStream *st, int64_t timestamp)
	Wrap a given time stamp, if there is an indication for an overflow. More...

void	ff_flush_packet_queue (AVFormatContext *s)

int	ff_mkdir_p (const char *path)
	Automatically create sub-directories. More...

char *	ff_data_to_hex (char buf, const uint8_t src, int size, int lowercase)
	Write hexadecimal string corresponding to given binary data. More...

int	ff_hex_to_data (uint8_t data, const char p)
	Parse a string of hexadecimal strings. More...

int	ff_interleave_add_packet (AVFormatContext s, AVPacket pkt, int(compare)(AVFormatContext , const AVPacket , const AVPacket ))
	Add packet to an AVFormatContext's packet_buffer list, determining its interleaved position using compare() function argument. More...

void	ff_read_frame_flush (AVFormatContext *s)
	Flush the frame reader. More...

uint64_t	ff_ntp_time (void)
	Get the current time since NTP epoch in microseconds. More...

uint64_t	ff_get_formatted_ntp_time (uint64_t ntp_time_us)
	Get the NTP time stamp formatted as per the RFC-5905. More...

uint64_t	ff_parse_ntp_time (uint64_t ntp_ts)
	Parse the NTP time in micro seconds (since NTP epoch). More...

int	ff_sdp_write_media (char buff, int size, const AVStream st, int idx, const char dest_addr, const char dest_type, int port, int ttl, AVFormatContext *fmt)
	Append the media-specific SDP fragment for the media stream c to the buffer buff. More...

int	ff_write_chained (AVFormatContext dst, int dst_stream, AVPacket pkt, AVFormatContext *src, int interleave)
	Write a packet to another muxer than the one the user originally intended. More...

int	ff_get_line (AVIOContext s, char buf, int maxlen)
	Read a whole line of text from AVIOContext. More...

int	ff_get_chomp_line (AVIOContext s, char buf, int maxlen)
	Same as ff_get_line but strip the white-space characters in the text tail. More...

void	ff_parse_key_value (const char str, ff_parse_key_val_cb callback_get_buf, void context)
	Parse a string with comma-separated key=value pairs. More...

int	ff_find_stream_index (const AVFormatContext *s, int id)
	Find stream index based on format-specific stream ID. More...

int	ff_index_search_timestamp (const AVIndexEntry *entries, int nb_entries, int64_t wanted_timestamp, int flags)
	Internal version of av_index_search_timestamp. More...

int	ff_add_index_entry (AVIndexEntry *index_entries, int nb_index_entries, unsigned int *index_entries_allocated_size, int64_t pos, int64_t timestamp, int size, int distance, int flags)
	Internal version of av_add_index_entry. More...

void	ff_configure_buffers_for_index (AVFormatContext *s, int64_t time_tolerance)

AVChapter *	avpriv_new_chapter (AVFormatContext s, int64_t id, AVRational time_base, int64_t start, int64_t end, const char title)
	Add a new chapter. More...

void	ff_reduce_index (AVFormatContext *s, int stream_index)
	Ensure the index uses less memory than the maximum specified in AVFormatContext.max_index_size by discarding entries if it grows too large. More...

enum AVCodecID	ff_guess_image2_codec (const char *filename)

const AVCodec *	ff_find_decoder (AVFormatContext s, const AVStream st, enum AVCodecID codec_id)

int	ff_seek_frame_binary (AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
	Perform a binary search using av_index_search_timestamp() and AVInputFormat.read_timestamp(). More...

void	avpriv_update_cur_dts (AVFormatContext s, AVStream ref_st, int64_t timestamp)
	Update cur_dts of all streams based on the given timestamp and AVStream. More...

int	ff_find_last_ts (AVFormatContext s, int stream_index, int64_t ts, int64_t pos, int64_t(read_timestamp)(struct AVFormatContext , int, int64_t , int64_t))

int64_t	ff_gen_search (AVFormatContext s, int stream_index, int64_t target_ts, int64_t pos_min, int64_t pos_max, int64_t pos_limit, int64_t ts_min, int64_t ts_max, int flags, int64_t ts_ret, int64_t(read_timestamp)(struct AVFormatContext , int, int64_t *, int64_t))
	Perform a binary search using read_timestamp(). More...

void	avpriv_set_pts_info (AVStream *st, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
	Set the time base and wrapping info for a given stream. More...

int	ff_add_param_change (AVPacket *pkt, int32_t channels, uint64_t channel_layout, int32_t sample_rate, int32_t width, int32_t height)
	Add side data to a packet for changing parameters to the given values. More...

int	ff_framehash_write_header (AVFormatContext *s)
	Set the timebase for each stream from the corresponding codec timebase and print it. More...

int	ff_read_packet (AVFormatContext s, AVPacket pkt)
	Read a transport packet from a media file. More...

int	ff_add_attached_pic (AVFormatContext s, AVStream st, AVIOContext pb, AVBufferRef *buf, int size)
	Add an attached pic to an AVStream. More...

int	ff_interleave_packet_per_dts (AVFormatContext s, AVPacket pkt, int flush, int has_packet)
	Interleave an AVPacket per dts so it can be muxed. More...

int	ff_interleave_packet_passthrough (AVFormatContext s, AVPacket pkt, int flush, int has_packet)
	Interleave packets directly in the order in which they arrive without any sort of buffering. More...

void	ff_free_stream (AVFormatContext s, AVStream st)

unsigned int	ff_codec_get_tag (const AVCodecTag *tags, enum AVCodecID id)

enum AVCodecID	ff_codec_get_id (const AVCodecTag *tags, unsigned int tag)

int	ff_is_intra_only (enum AVCodecID id)

enum AVCodecID	ff_get_pcm_codec_id (int bps, int flt, int be, int sflags)
	Select a PCM codec based on the given parameters. More...

AVRational	ff_choose_timebase (AVFormatContext s, AVStream st, int min_precision)
	Chooses a timebase for muxing the specified stream. More...

enum AVChromaLocation	ff_choose_chroma_location (AVFormatContext s, AVStream st)
	Chooses a timebase for muxing the specified stream. More...

int	ff_generate_avci_extradata (AVStream *st)
	Generate standard extradata for AVC-Intra based on width/height and field order. More...

int	ff_stream_add_bitstream_filter (AVStream st, const char name, const char *args)
	Add a bitstream filter to a stream. More...

int	ff_stream_encode_params_copy (AVStream dst, const AVStream src)
	Copy encoding parameters from source to destination stream. More...

int	ff_stream_side_data_copy (AVStream dst, const AVStream src)
	Copy side data from source to destination stream. More...

int	ff_rename (const char url_src, const char url_dst, void *logctx)
	Wrap ffurl_move() and log if error happens. More...

int	ff_alloc_extradata (AVCodecParameters *par, int size)
	Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0. More...

int	ff_get_extradata (AVFormatContext s, AVCodecParameters par, AVIOContext *pb, int size)
	Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and fill it from pb. More...

int	ff_rfps_add_frame (AVFormatContext ic, AVStream st, int64_t dts)
	add frame for rfps calculation. More...

void	ff_rfps_calculate (AVFormatContext *ic)

int	ff_copy_whiteblacklists (AVFormatContext dst, const AVFormatContext src)
	Copies the whilelists from one context to the other. More...

int	ff_format_output_open (AVFormatContext s, const char url, AVDictionary **options)
	Utility function to open IO stream of output format. More...

int	ff_format_io_close (AVFormatContext s, AVIOContext *pb)

void	ff_format_io_close_default (AVFormatContext s, AVIOContext pb)

int	ff_is_http_proto (const char *filename)
	Utility function to check if the file uses http or https protocol. More...

int	ff_parse_creation_time_metadata (AVFormatContext s, int64_t timestamp, int return_seconds)
	Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails. More...

int	ff_standardize_creation_time (AVFormatContext *s)
	Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string. More...

int	ff_reshuffle_raw_rgb (AVFormatContext s, AVPacket ppkt, AVCodecParameters par, int expected_stride)
	Reshuffles the lines to use the user specified stride. More...

int	ff_get_packet_palette (AVFormatContext s, AVPacket pkt, int ret, uint32_t *palette)
	Retrieves the palette from a packet, either from side data, or appended to the video data in the packet itself (raw video only). More...

int	ff_bprint_to_codecpar_extradata (AVCodecParameters par, struct AVBPrint buf)
	Finalize buf into extradata and set its size appropriately. More...

const AVPacket *	ff_interleaved_peek (AVFormatContext *s, int stream)
	Find the next packet in the interleaving queue for the given stream. More...

int	ff_get_muxer_ts_offset (AVFormatContext s, int stream_index, int64_t offset)

int	ff_lock_avformat (void)

int	ff_unlock_avformat (void)

void	ff_format_set_url (AVFormatContext s, char url)
	Set AVFormatContext url field to the provided pointer. More...

void	avpriv_register_devices (const AVOutputFormat const o[], const AVInputFormat const i[])

int	ff_format_shift_data (AVFormatContext *s, int64_t read_start, int shift_size)
	Make shift_size amount of space at read_start by shifting data in the output at read_start until the current IO position. More...

Macro Definition Documentation

◆ MAX_URL_SIZE

#define MAX_URL_SIZE 4096

Definition at line 33 of file internal.h.

◆ PROBE_BUF_MIN

#define PROBE_BUF_MIN 2048

size of probe buffer, for guessing file type from file contents

Definition at line 36 of file internal.h.

◆ PROBE_BUF_MAX

#define PROBE_BUF_MAX (1 << 20)

Definition at line 37 of file internal.h.

◆ hex_dump_debug

#define hex_dump_debug	(	class,
		buf,
		size
	)	do { if (0) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size); } while(0)

Definition at line 42 of file internal.h.

◆ FF_FMT_INIT_CLEANUP

#define FF_FMT_INIT_CLEANUP (1 << 0)

For an AVInputFormat with this flag set read_close() needs to be called by the caller upon read_header() failure.

Definition at line 49 of file internal.h.

◆ MAX_STD_TIMEBASES

#define MAX_STD_TIMEBASES (30*12+30+3+6)

Definition at line 244 of file internal.h.

◆ MAX_REORDER_DELAY

#define MAX_REORDER_DELAY 16

Definition at line 360 of file internal.h.

◆ dynarray_add

#define dynarray_add	(	tab,
		nb_ptr,
		elem
	)

Value:

do {\
    __typeof__(tab) _tab = (tab);\
    __typeof__(elem) _elem = (elem);\
    (void)sizeof(**_tab == _elem); /* check that types are compatible */\
    av_dynarray_add(_tab, nb_ptr, _elem);\
} while(0)

Definition at line 445 of file internal.h.

◆ RELATIVE_TS_BASE

#define RELATIVE_TS_BASE (INT64_MAX - (1LL << 48))

Definition at line 459 of file internal.h.

◆ NTP_OFFSET

#define NTP_OFFSET 2208988800ULL

Definition at line 518 of file internal.h.

◆ NTP_OFFSET_US

#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)

Definition at line 519 of file internal.h.

◆ SPACE_CHARS

#define SPACE_CHARS " \t\r\n"

Definition at line 602 of file internal.h.

◆ FFERROR_REDO

#define FFERROR_REDO FFERRTAG('R','E','D','O')

Returned by demuxers to indicate that data was consumed but discarded (ignored streams or junk data).

The framework will re-call the demuxer.

Definition at line 912 of file internal.h.

◆ CONTAINS_PAL

#define CONTAINS_PAL 2

Definition at line 966 of file internal.h.

Typedef Documentation

◆ ff_parse_key_val_cb

typedef void(* ff_parse_key_val_cb) (void *context, const char *key, int key_len, char **dest, int *dest_len)

Callback function type for ff_parse_key_value.

Parameters

key	a pointer to the key
key_len	the number of bytes that belong to the key, including the '=' char
dest	return the destination pointer for the value in *dest, may be null to ignore the value
dest_len	the length of the *dest buffer

Definition at line 614 of file internal.h.

Enumeration Type Documentation

◆ AVWriteUncodedFrameFlags

enum AVWriteUncodedFrameFlags

Flags for AVFormatContext.write_uncoded_frame()

Enumerator

AV_WRITE_UNCODED_FRAME_QUERY

Query whether the feature is possible on this stream.

The frame argument is ignored.

Definition at line 893 of file internal.h.

Function Documentation

◆ ffformatcontext()

static av_always_inline FFFormatContext* ffformatcontext ( AVFormatContext * s )

static

Definition at line 189 of file internal.h.

Referenced by amv_init(), asf_build_simple_index(), asf_read_header(), asf_read_pts(), asf_read_seek(), av_format_inject_global_side_data(), av_interleaved_write_frame(), av_read_frame(), av_write_frame(), av_write_trailer(), avformat_find_stream_info(), avformat_free_context(), avformat_init_output(), avformat_new_stream(), avformat_open_input(), avformat_queue_attached_pictures(), avformat_write_header(), avi_write_header(), avpriv_new_chapter(), codec2_read_header(), compute_pkt_fields(), deinit_muxer(), dsf_read_packet(), dv_frame_offset(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), ff_flush_packet_queue(), ff_gen_search(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_interleaved_peek(), ff_pcm_read_seek(), ff_read_frame_flush(), ff_read_packet(), flac_queue_flush(), flac_read_timestamp(), fsb_read_header(), get_next_pkt(), init_muxer(), interleaved_write_packet(), ipmovie_read_header(), mkv_init(), mkv_write_track(), mov_init(), mp3_queue_flush(), mp3_read_header(), mp3_seek(), mpegts_init(), mpegts_read_header(), mtv_read_packet(), mxf_interleave_get_packet(), nut_read_header(), ogg_get_length(), ogg_packet(), ogg_reset(), parse_packet(), probe_codec(), r3d_read_header(), read_frame_internal(), read_header(), seek_frame_byte(), seek_frame_generic(), ser_read_packet(), smacker_read_seek(), tee_write_packet(), tta_queue_flush(), update_initial_durations(), update_initial_timestamps(), vqf_read_seek(), webm_chunk_init(), webp_init(), write_muxed_file(), write_packet(), write_uncoded_frame_internal(), yop_read_seek(), yuv4_read_header(), yuv4_read_packet(), and yuv4_read_seek().

◆ ffstream()

static av_always_inline FFStream* ffstream ( AVStream * st )

static

Definition at line 432 of file internal.h.

Referenced by aa_read_header(), acm_read_header(), add_dstream(), add_index_entry(), add_keyframes_index(), adts_aac_read_header(), ape_read_seek(), asf_read_seek(), asf_read_stream_properties(), asfrtp_parse_sdp_line(), av1_read_header(), av_add_index_entry(), av_find_best_stream(), av_format_inject_global_side_data(), av_guess_frame_rate(), av_index_search_timestamp(), av_write_trailer(), avformat_find_stream_info(), avformat_index_get_entry(), avformat_index_get_entry_from_timestamp(), avformat_transfer_internal_stream_timing_info(), avi_read_header(), avi_read_idx1(), avi_read_packet(), avi_read_seek(), avi_sync(), avpriv_set_pts_info(), avpriv_stream_set_need_parsing(), avpriv_update_cur_dts(), calculate_bitrate(), check_stream_max_drift(), cine_read_packet(), clean_index(), clear_index_entries(), compute_frame_duration(), compute_pkt_fields(), concat_read_packet(), create_new_audio_stream(), dash_check_bitstream(), decode_frame(), dhav_read_seek(), dtshd_read_header(), estimate_timings_from_pts(), extract_extradata(), extract_extradata_init(), ff_configure_buffers_for_index(), ff_get_muxer_ts_offset(), ff_img_read_header(), ff_img_read_packet(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_parse_mpeg2_descriptor(), ff_pcm_read_seek(), ff_raw_audio_read_header(), ff_raw_video_read_header(), ff_read_frame_flush(), ff_read_packet(), ff_reduce_index(), ff_rfps_add_frame(), ff_rfps_calculate(), ff_rm_read_mdpr_codecdata(), ff_seek_frame_binary(), ff_stream_add_bitstream_filter(), fifo_thread_write_header(), film_read_header(), film_read_seek(), find_prev_closest_index(), fix_index_entry_timestamps(), flac_header(), flac_read_header(), flac_read_timestamp(), flac_seek(), flv_get_extradata(), flv_set_audio_codec(), flv_set_video_codec(), free_stream(), get_codec_data(), get_sindex(), guess_ni_flag(), gxf_seek(), has_decode_delay_been_guessed(), hds_write_packet(), ifv_read_packet(), img_read_seek(), init_muxer(), init_pts(), init_video_stream(), ipu_read_header(), ism_write_packet(), lmlm4_read_header(), loas_read_header(), lxf_read_header(), m4sl_cb(), mov_build_index(), mov_estimate_video_delay(), mov_finalize_stsd_codec(), mov_find_next_sample(), mov_fix_index(), mov_get_skip_samples(), mov_parse_stsd_audio(), mov_read_ares(), mov_read_chapters(), mov_read_header(), mov_read_packet(), mov_read_rtmd_track(), mov_read_seek(), mov_read_stss(), mov_read_timecode_track(), mov_read_trak(), mov_read_trun(), mov_seek_stream(), mp3_parse_info_tag(), mp3_read_header(), mp3_seek(), mpc8_read_seek(), mpc_read_seek(), mpegps_read_packet(), mpegts_find_stream_type(), mpegts_push_data(), mpegts_set_stream_info(), msf_read_header(), mtv_read_header(), mv_read_packet(), mxf_interleave_get_packet(), mxf_parse_structural_metadata(), mxf_read_packet(), nc_read_header(), new_stream(), ni_prepare_read(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_seek(), nut_write_packet(), ogm_header(), oma_read_header(), parse_packet(), prepare_input_packet(), probe_codec(), pva_read_header(), rdt_parse_sdp_line(), read_frame_internal(), read_header(), read_packet(), read_seek(), reset_index_position(), rl2_read_packet(), rl2_read_seek(), rm_read_audio_stream_info(), rpl_read_packet(), s337m_read_packet(), sbg_read_header(), sbg_read_packet(), sbg_read_seek2(), scan_file(), scd_read_track(), sdr2_read_header(), seek_frame_generic(), seg_check_bitstream(), select_from_pts_buffer(), set_codec_from_probe_data(), set_stream_info_from_input_stream(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), theora_header(), try_decode_frame(), tta_read_packet(), tta_read_seek(), ty_read_header(), update_dts_from_pts(), update_initial_durations(), update_initial_timestamps(), update_stream_avctx(), update_wrap_reference(), voc_read_seek(), vp8_header(), vqf_read_seek(), write_packet(), write_packets_common(), write_packets_from_bsfs(), xvag_read_header(), and xwma_read_header().

◆ cffstream()

static const av_always_inline FFStream* cffstream ( const AVStream * st )

static

Definition at line 437 of file internal.h.

Referenced by av_find_default_stream_index(), av_stream_get_codec_timebase(), av_stream_get_end_pts(), av_stream_get_parser(), avformat_index_get_entries_count(), avformat_transfer_internal_stream_timing_info(), dump_stream_format(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), ff_interleave_packet_per_dts(), has_codec_parameters(), and wrap_timestamp().

◆ avpriv_stream_set_need_parsing()

void avpriv_stream_set_need_parsing	(	AVStream *	st,
		enum AVStreamParseType	type
	)

Definition at line 100 of file utils.c.

Referenced by v4l2_read_header().

◆ is_relative()

static av_always_inline int is_relative ( int64_t ts )

static

Definition at line 461 of file internal.h.

Referenced by av_read_frame(), compute_pkt_fields(), ff_add_index_entry(), ff_read_packet(), ff_rfps_add_frame(), read_frame_internal(), and update_initial_timestamps().

◆ ff_wrap_timestamp()

int64_t ff_wrap_timestamp	(	const AVStream *	st,
		int64_t	timestamp
	)

Wrap a given time stamp, if there is an indication for an overflow.

Parameters

st	stream
timestamp	the time stamp to wrap

Returns: resulting time stamp

Definition at line 63 of file demux.c.

Referenced by av_add_index_entry(), and read_timestamp().

◆ ff_flush_packet_queue()

void ff_flush_packet_queue ( AVFormatContext * s )

Definition at line 299 of file utils.c.

Referenced by avformat_free_context(), estimate_timings_from_pts(), and ff_read_frame_flush().

◆ ff_mkdir_p()

int ff_mkdir_p ( const char * path )

Automatically create sub-directories.

Parameters

path	will create sub-directories by path

Returns: 0, or < 0 on error

Definition at line 1113 of file utils.c.

Referenced by format_name(), and hls_start().

◆ ff_data_to_hex()

char* ff_data_to_hex	(	char *	buf,
		const uint8_t *	src,
		int	size,
		int	lowercase
	)

Write hexadecimal string corresponding to given binary data.

The string is zero-terminated.

Parameters

buf	the output string is written here; needs to be at least 2 * size + 1 bytes long.
src	the input data to be transformed.
size	the size (in byte) of src.
lowercase	determines whether to use the range [0-9a-f] or [0-9A-F].

Returns: buf.

Definition at line 1147 of file utils.c.

Referenced by aa_read_header(), do_encrypt(), do_llnw_auth(), ff_rdt_calc_response_and_checksum(), hex_log(), hls_encryption_start(), hls_read_header(), make_digest_auth(), md5_close(), mov_read_adrm(), open_input(), param_write_hex(), and tak_read_header().

◆ ff_hex_to_data()

int ff_hex_to_data	(	uint8_t *	data,
		const char *	p
	)

Parse a string of hexadecimal strings.

Any space between the hexadecimal digits is ignored.

Parameters

data	if non-null, the parsed data is written to this pointer
p	the string to parse

Returns: the number of bytes written (or to be written, if data is null)

Definition at line 1168 of file utils.c.

Referenced by concat_parse_script(), parse_fmtp_config(), and parse_playlist().

◆ ff_interleave_add_packet()

int ff_interleave_add_packet	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int()(AVFormatContext , const AVPacket , const AVPacket )	compare
	)

Add packet to an AVFormatContext's packet_buffer list, determining its interleaved position using compare() function argument.

Returns: 0 on success, < 0 on error. pkt will always be blank on return.

Definition at line 807 of file mux.c.

Referenced by ff_interleave_packet_per_dts(), gxf_interleave_packet(), and mxf_interleave().

◆ ff_read_frame_flush()

void ff_read_frame_flush ( AVFormatContext * s )

Flush the frame reader.

Definition at line 714 of file seek.c.

Referenced by asf_read_pts(), avformat_flush(), avformat_seek_file(), dash_seek(), ff_seek_frame_binary(), hls_read_seek(), mpegts_get_dts(), seek_frame_generic(), and seek_frame_internal().

◆ ff_ntp_time()

uint64_t ff_ntp_time ( void )

Get the current time since NTP epoch in microseconds.

Definition at line 951 of file utils.c.

Referenced by mov_write_prft_tag(), rtp_write_header(), rtp_write_packet(), and rtp_write_trailer().

◆ ff_get_formatted_ntp_time()

uint64_t ff_get_formatted_ntp_time ( uint64_t ntp_time_us )

Get the NTP time stamp formatted as per the RFC-5905.

Parameters

ntp_time NTP time in micro seconds (since NTP epoch)

Returns: the formatted NTP time stamp

Definition at line 956 of file utils.c.

Referenced by mov_write_prft_tag().

◆ ff_parse_ntp_time()

uint64_t ff_parse_ntp_time ( uint64_t ntp_ts )

Parse the NTP time in micro seconds (since NTP epoch).

Parameters

ntp_ts NTP time stamp formatted as per the RFC-5905.

Returns: the time in micro seconds (since NTP epoch)

Definition at line 978 of file utils.c.

Referenced by rtp_set_prft().

◆ ff_sdp_write_media()

int ff_sdp_write_media	(	char *	buff,
		int	size,
		const AVStream *	st,
		int	idx,
		const char *	dest_addr,
		const char *	dest_type,
		int	port,
		int	ttl,
		AVFormatContext *	fmt
	)

Append the media-specific SDP fragment for the media stream c to the buffer buff.

Note, the buffer needs to be initialized, since it is appended to existing content.

Parameters

buff	the buffer to append the SDP fragment to
size	the size of the buff buffer
st	the AVStream of the media to describe
idx	the global stream index
dest_addr	the destination address of the media stream, may be NULL
dest_type	the destination address type, may be NULL
port	the destination port of the media stream, 0 if unknown
ttl	the time to live of the stream, 0 if not multicast
fmt	the AVFormatContext, which might contain options modifying the generated SDP

Returns: 0 on success, a negative error code on failure

Definition at line 910 of file sdp.c.

Referenced by mov_write_udta_sdp().

◆ ff_write_chained()

int ff_write_chained	(	AVFormatContext *	dst,
		int	dst_stream,
		AVPacket *	pkt,
		AVFormatContext *	src,
		int	interleave
	)

Write a packet to another muxer than the one the user originally intended.

Useful when chaining muxers, where one muxer internally writes a received packet to another muxer.

Parameters

dst	the muxer to write the packet to
dst_stream	the stream index within dst to write the packet to
pkt	the packet to be written. It will be returned blank when av_interleaved_write_frame() is used, unchanged otherwise.
src	the muxer the packet originally was intended for
interleave	0->use av_write_frame, 1->av_interleaved_write_frame

Returns: the value av_write_frame returned

Definition at line 1300 of file mux.c.

Referenced by dash_write_packet(), ff_mov_add_hinted_packet(), hds_write_packet(), hls_write_packet(), ism_write_packet(), rtsp_write_packet(), sap_write_packet(), and seg_write_packet().

◆ ff_get_line()

int ff_get_line	(	AVIOContext *	s,
		char *	buf,
		int	maxlen
	)

Read a whole line of text from AVIOContext.

Stop reading after reaching either a \n, a \0 or EOF. The returned string is always \0-terminated, and may be truncated if the buffer is too small.

Parameters

s	the read-only AVIOContext
buf	buffer to store the read line
maxlen	size of the buffer

Returns: the length of the string written in the buffer, not including the final \0

Definition at line 798 of file aviobuf.c.

Referenced by aqt_read_header(), ff_get_chomp_line(), get_line(), hls_encryption_start(), jacosub_read_header(), microdvd_read_header(), mpl2_read_header(), mpsub_read_header(), nist_read_header(), pjs_read_header(), pvf_read_header(), stl_read_header(), subviewer1_read_header(), subviewer_read_header(), and vplayer_read_header().

◆ ff_get_chomp_line()

int ff_get_chomp_line	(	AVIOContext *	s,
		char *	buf,
		int	maxlen
	)

Same as ff_get_line but strip the white-space characters in the text tail.

Parameters

s	the read-only AVIOContext
buf	buffer to store the read line
maxlen	size of the buffer

Returns: the length of the string written in the buffer

Definition at line 815 of file aviobuf.c.

Referenced by parse_playlist().

◆ ff_parse_key_value()

void ff_parse_key_value	(	const char *	str,
		ff_parse_key_val_cb	callback_get_buf,
		void *	context
	)

Parse a string with comma-separated key=value pairs.

The value strings may be quoted and may contain escaped characters within quoted strings.

Parameters

str	the string to parse
callback_get_buf	function that returns where to store the unescaped value string.
context	the opaque context pointer to pass to callback_get_buf

Definition at line 1222 of file utils.c.

Referenced by ff_http_auth_handle_header(), and parse_playlist().

◆ ff_find_stream_index()

int ff_find_stream_index	(	const AVFormatContext *	s,
		int	id
	)

Find stream index based on format-specific stream ID.

Returns: stream index, or < 0 on error

Definition at line 1276 of file utils.c.

Referenced by get_sindex(), parse_chunks(), pmt_cb(), and scte_data_cb().

◆ ff_index_search_timestamp()

int ff_index_search_timestamp	(	const AVIndexEntry *	entries,
		int	nb_entries,
		int64_t	wanted_timestamp,
		int	flags
	)

Internal version of av_index_search_timestamp.

Definition at line 127 of file seek.c.

Referenced by av_index_search_timestamp(), avformat_index_get_entry_from_timestamp(), ff_add_index_entry(), mxf_read_seek(), and read_seek().

◆ ff_add_index_entry()

int ff_add_index_entry	(	AVIndexEntry **	index_entries,
		int *	nb_index_entries,
		unsigned int *	index_entries_allocated_size,
		int64_t	pos,
		int64_t	timestamp,
		int	size,
		int	distance,
		int	flags
	)

Internal version of av_add_index_entry.

Definition at line 59 of file seek.c.

Referenced by av_add_index_entry(), read_header(), and scan_file().

◆ ff_configure_buffers_for_index()

void ff_configure_buffers_for_index	(	AVFormatContext *	s,
		int64_t	time_tolerance
	)

Definition at line 170 of file seek.c.

Referenced by mov_read_header().

◆ avpriv_new_chapter()

AVChapter* avpriv_new_chapter	(	AVFormatContext *	s,
		int64_t	id,
		AVRational	time_base,
		int64_t	start,
		int64_t	end,
		const char *	title
	)

Add a new chapter.

Parameters

s	media file handle
id	unique ID for this chapter
start	chapter start time in time_base units
end	chapter end time in time_base units
title	chapter title

Returns: AVChapter or NULL on error

Definition at line 883 of file utils.c.

Referenced by aa_read_header(), asf_read_marker(), concat_parse_script(), decode_info_header(), ff_id3v2_parse_chapters(), flac_read_header(), mov_metadata_hmmt(), mov_read_chapters(), mov_read_chpl(), ogm_chapter(), read_chapter(), and read_header().

◆ ff_reduce_index()

void ff_reduce_index	(	AVFormatContext *	s,
		int	stream_index
	)

Ensure the index uses less memory than the maximum specified in AVFormatContext.max_index_size by discarding entries if it grows too large.

Definition at line 45 of file seek.c.

Referenced by av_read_frame(), mpegps_read_pes_header(), mpegts_get_dts(), and read_frame_internal().

◆ ff_guess_image2_codec()

enum AVCodecID ff_guess_image2_codec ( const char * filename )

Definition at line 109 of file img2.c.

Referenced by ape_tag_read_field(), av_guess_codec(), av_guess_format(), ff_img_read_header(), and img_read_probe().

◆ ff_find_decoder()

const AVCodec* ff_find_decoder	(	AVFormatContext *	s,
		const AVStream *	st,
		enum AVCodecID	codec_id
	)

Definition at line 135 of file utils.c.

Referenced by av_find_best_stream(), and find_probe_decoder().

◆ ff_seek_frame_binary()

int ff_seek_frame_binary	(	AVFormatContext *	s,
		int	stream_index,
		int64_t	target_ts,
		int	flags
	)

Perform a binary search using av_index_search_timestamp() and AVInputFormat.read_timestamp().

Parameters

target_ts	target timestamp in the time base of the given stream
stream_index	stream number

Definition at line 282 of file seek.c.

Referenced by asf_read_seek(), ogg_read_seek(), rm_read_seek(), and seek_frame_internal().

◆ avpriv_update_cur_dts()

void avpriv_update_cur_dts	(	AVFormatContext *	s,
		AVStream *	ref_st,
		int64_t	timestamp
	)

Update cur_dts of all streams based on the given timestamp and AVStream.

Stream ref_st unchanged, others set cur_dts in their native time base. Only needed for timestamp wrapping or if (dts not set and pts!=dts).

Parameters

timestamp	new dts expressed in time_base of param ref_st
ref_st	reference stream giving time_base of param timestamp

Definition at line 32 of file seek.c.

Referenced by aa_read_header(), aa_read_seek(), ff_seek_frame_binary(), idcin_read_seek(), mp3_seek(), mpc8_read_seek(), mxf_read_seek(), read_seek(), seek_frame_generic(), and vpk_read_seek().

◆ ff_find_last_ts()

int ff_find_last_ts	(	AVFormatContext *	s,
		int	stream_index,
		int64_t *	ts,
		int64_t *	pos,
		int64_t()(struct AVFormatContext , int, int64_t *, int64_t)	read_timestamp
	)

Definition at line 352 of file seek.c.

Referenced by ff_gen_search(), and find_duration().

◆ ff_gen_search()

int64_t ff_gen_search	(	AVFormatContext *	s,
		int	stream_index,
		int64_t	target_ts,
		int64_t	pos_min,
		int64_t	pos_max,
		int64_t	pos_limit,
		int64_t	ts_min,
		int64_t	ts_max,
		int	flags,
		int64_t *	ts_ret,
		int64_t()(struct AVFormatContext , int, int64_t *, int64_t)	read_timestamp
	)

Perform a binary search using read_timestamp().

Parameters

target_ts	target timestamp in the time base of the given stream
stream_index	stream number

Definition at line 390 of file seek.c.

Referenced by ff_seek_frame_binary(), and read_seek().

◆ avpriv_set_pts_info()

void avpriv_set_pts_info	(	AVStream *	st,
		int	pts_wrap_bits,
		unsigned int	pts_num,
		unsigned int	pts_den
	)

Set the time base and wrapping info for a given stream.

This will be used to interpret the stream's timestamps. If the new time base is invalid (numerator or denominator are non-positive), it leaves the stream unchanged.

Parameters

st	stream
pts_wrap_bits	number of bits effectively used by the pts (used for wrap control)
pts_num	time base numerator
pts_den	time base denominator

Definition at line 1196 of file utils.c.

Referenced by aa_read_header(), aax_read_header(), ace_read_header(), acm_read_header(), add_video_stream(), adp_read_header(), ads_read_header(), adts_aac_read_header(), adx_read_header(), afc_read_header(), aiff_read_header(), aiff_write_header(), aix_read_header(), ape_read_header(), apng_read_header(), aqt_read_header(), argo_brp_read_header(), asf_read_stream_properties(), asf_write_header1(), asfrtp_parse_sdp_line(), ass_read_header(), ast_read_header(), audio_read_header(), audio_write_header(), av1_read_header(), avformat_new_stream(), avi_read_header(), avi_write_header(), avisynth_create_stream_audio(), avisynth_create_stream_video(), avr_read_header(), bfi_read_header(), binka_read_header(), bmv_read_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), cine_read_header(), codec2_read_header_common(), copy_stream_props(), create_audio_stream(), create_new_audio_stream(), create_stream(), dat_read_packet(), dc1394_read_common(), dcstr_read_header(), decklink_setup_audio(), decklink_setup_video(), decode_stream_header(), derf_read_header(), dfa_read_header(), dhav_read_packet(), dirac_header(), dsf_read_header(), dshow_add_device(), dss_read_header(), dtshd_read_header(), dv_extract_audio_info(), dv_extract_video_info(), dxa_read_header(), ea_read_header(), epaf_read_header(), fbdev_read_header(), ff_argo_asf_fill_stream(), ff_decklink_read_header(), ff_img_read_header(), ff_raw_video_read_header(), ff_rm_read_mdpr_codecdata(), ff_voc_get_packet(), film_read_header(), fits_read_header(), flac_header(), flac_read_header(), flv_init(), fsb_read_header(), fwse_read_header(), g722_read_header(), g723_1_init(), g729_read_header(), gdigrab_read_header(), gdv_read_header(), genh_read_header(), get_audio_config(), get_packet_header(), get_video_config(), gif_read_header(), gif_write_header(), grab_read_header(), gsm_read_header(), gxf_header(), gxf_write_header(), hca_read_header(), hcom_read_header(), hls_write_header(), hnm_read_header(), idcin_read_header(), iff_read_header(), ifv_read_header(), ilbc_read_header(), init_audio(), init_muxer(), init_stream(), init_video_stream(), ipmovie_read_header(), ipu_read_header(), ircam_read_header(), iss_read_header(), jacosub_read_header(), kmsgrab_read_header(), lavfi_read_header(), lmlm4_read_header(), loas_read_header(), lrc_read_header(), lrc_write_header(), lvf_read_header(), lxf_read_header(), mcc_read_header(), microdvd_read_header(), microdvd_write_header(), mkv_init(), mlp_read_header(), mmf_read_header(), modplug_read_header(), mods_read_header(), moflex_read_sync(), mov_init(), mov_read_trak(), mp3_read_header(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpegts_init(), mpegts_read_header(), mpegts_set_stream_info(), mpjpeg_read_header(), mpl2_read_header(), mpsub_read_header(), msf_read_header(), msnwc_tcp_read_header(), mtaf_read_header(), mtv_read_header(), musx_read_header(), mv_read_header(), mxf_init(), mxf_parse_structural_metadata(), mxg_read_header(), nc_read_header(), new_stream(), nist_read_header(), nsv_parse_NSVs_header(), nut_write_header(), nuv_header(), ogg_build_vp8_headers(), ogg_init(), ogg_new_stream(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), open_demux_for_component(), opus_header(), parse_audio_var(), parse_strk(), parse_video_var(), parse_vtrk(), pcm_read_header(), pjs_read_header(), pmp_header(), pp_bnk_read_header(), pulse_read_header(), pulse_write_header(), pva_read_header(), pvf_read_header(), qt_rtp_parse_packet(), r3d_read_red1(), r3d_read_reda(), rawvideo_read_header(), read_frame(), read_gab2_sub(), read_header(), read_header_gme(), read_header_openmpt(), read_header_vs(), read_sl_header(), realtext_read_header(), redspark_read_header(), rl2_read_header(), roq_read_packet(), rpl_read_header(), rsd_read_header(), rso_read_header(), rtp_write_header(), sami_read_header(), sbg_read_header(), scc_read_header(), scc_write_header(), scd_read_track(), sdr2_read_header(), sds_read_header(), seg_init(), seq_read_header(), ser_read_header(), set_context_streams_from_tracks(), set_stream_info_from_input_stream(), sga_audio_packet(), sga_video_packet(), siff_parse_vbv1(), simbiosis_imx_read_header(), skeleton_header(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), smush_read_header(), sol_read_header(), sox_read_header(), speex_header(), srt_read_header(), srt_write_header(), stl_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_read_header(), sup_write_header(), svag_read_header(), svs_read_header(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), theora_header(), thp_read_header(), threedostr_read_header(), tmv_read_header(), track_header(), tta_init(), tta_read_header(), ttml_write_header(), txd_read_header(), ty_read_header(), v210_read_header(), v4l2_read_header(), vag_read_header(), vc1t_read_header(), vc1test_write_header(), vfw_read_header(), vid_read_packet(), vivo_read_header(), vmd_read_header(), vorbis_header(), vp8_header(), vpk_read_header(), vplayer_read_header(), vqf_read_header(), wc3_read_header(), webm_chunk_init(), webp_init(), webvtt_read_header(), webvtt_write_header(), write_header(), write_stream_data(), wsaud_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), wve_read_header(), xa_read_header(), xmv_process_packet_header(), xvag_read_header(), xwma_read_header(), yop_read_header(), and yuv4_read_header().

◆ ff_add_param_change()

int ff_add_param_change	(	AVPacket *	pkt,
		int32_t	channels,
		uint64_t	channel_layout,
		int32_t	sample_rate,
		int32_t	width,
		int32_t	height
	)

Add side data to a packet for changing parameters to the given values.

Parameters set to 0 aren't included in the change.

Definition at line 1323 of file utils.c.

Referenced by flv_read_packet(), load_ipmovie_packet(), and swf_read_packet().

◆ ff_framehash_write_header()

int ff_framehash_write_header ( AVFormatContext * s )

Set the timebase for each stream from the corresponding codec timebase and print it.

Definition at line 24 of file framehash.c.

Referenced by framecrc_write_header(), and write_header().

◆ ff_read_packet()

int ff_read_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

Read a transport packet from a media file.

Parameters

s	media file handle
pkt	is filled

Returns: 0 if OK, AVERROR_xxx on error

Definition at line 524 of file demux.c.

Referenced by asfrtp_parse_packet(), estimate_timings_from_pts(), get_subtitle_pkt(), read_frame_internal(), read_gab2_sub(), and seek_subtitle().

◆ ff_add_attached_pic()

int ff_add_attached_pic	(	AVFormatContext *	s,
		AVStream *	st,
		AVIOContext *	pb,
		AVBufferRef **	buf,
		int	size
	)

Add an attached pic to an AVStream.

Parameters

st	if set, the stream to add the attached pic to; if unset, a new stream will be added to s.
pb	AVIOContext to read data from if buf is unset.
buf	if set, it contains the data and size information to be used for the attached pic; if unset, data is read from pb.
size	the size of the data to read if buf is unset.

Returns: 0 on success, < 0 on error. On error, this function removes the stream it has added (if any).

Definition at line 250 of file utils.c.

Referenced by ape_tag_read_field(), asf_read_picture(), ff_flac_parse_picture(), ff_id3v2_parse_apic(), get_attachment(), mov_read_chapters(), and mov_read_covr().

◆ ff_interleave_packet_per_dts()

int ff_interleave_packet_per_dts	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int	flush,
		int	has_packet
	)

Interleave an AVPacket per dts so it can be muxed.

See the documentation of AVOutputFormat.interleave_packet for details.

Definition at line 911 of file mux.c.

Referenced by gxf_interleave_packet(), and init_muxer().

◆ ff_interleave_packet_passthrough()

int ff_interleave_packet_passthrough	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int	flush,
		int	has_packet
	)

Interleave packets directly in the order in which they arrive without any sort of buffering.

Definition at line 1027 of file mux.c.

Referenced by init_muxer().

◆ ff_free_stream()

void ff_free_stream	(	AVFormatContext *	s,
		AVStream *	st
	)

Definition at line 680 of file utils.c.

Referenced by avi_read_header(), ff_add_attached_pic(), and ff_rm_read_mdpr_codecdata().

◆ ff_codec_get_tag()

unsigned int ff_codec_get_tag	(	const AVCodecTag *	tags,
		enum AVCodecID	id
	)

Definition at line 347 of file utils.c.

Referenced by ast_write_header(), caf_write_header(), flv_init(), flv_write_packet(), gxf_write_header(), ircam_write_header(), mkv_write_codecprivate(), mkv_write_track(), mov_find_codec_tag(), mov_get_codec_tag(), mov_write_esds_tag(), mov_write_isml_manifest(), smjpeg_write_header(), swf_write_header(), swf_write_video(), and write_stream_codec_info().

◆ ff_codec_get_id()

enum AVCodecID ff_codec_get_id	(	const AVCodecTag *	tags,
		unsigned int	tag
	)

◆ ff_is_intra_only()

int ff_is_intra_only ( enum AVCodecID id )

Definition at line 287 of file utils.c.

Referenced by compute_pkt_fields(), and init_muxer().

◆ ff_get_pcm_codec_id()

enum AVCodecID ff_get_pcm_codec_id	(	int	bps,
		int	flt,
		int	be,
		int	sflags
	)

Select a PCM codec based on the given parameters.

Parameters

bps	bits-per-sample
flt	floating-point
be	big-endian
sflags	signed flags. each bit corresponds to one byte of bit depth. e.g. the 1st bit indicates if 8-bit should be signed or unsigned, the 2nd bit indicates if 16-bit should be signed or unsigned, etc... This is useful for formats such as WAVE where only 8-bit is unsigned and all other bit depths are signed.

Returns: a PCM codec id or AV_CODEC_ID_NONE

Definition at line 368 of file utils.c.

Referenced by avr_read_header(), ff_mov_get_lpcm_codec_id(), ff_wav_codec_get_id(), get_codec_data(), nist_read_header(), and pvf_read_header().

◆ ff_choose_timebase()

AVRational ff_choose_timebase	(	AVFormatContext *	s,
		AVStream *	st,
		int	min_precision
	)

Chooses a timebase for muxing the specified stream.

The chosen timebase allows sample accurate timestamps based on the framerate or sample rate for audio streams. It also is at least as precise as 1/min_precision would be.

Definition at line 91 of file mux.c.

Referenced by nut_write_header().

◆ ff_choose_chroma_location()

enum AVChromaLocation ff_choose_chroma_location	(	AVFormatContext *	s,
		AVStream *	st
	)

Chooses a timebase for muxing the specified stream.

Definition at line 106 of file mux.c.

Referenced by mxf_init().

◆ ff_generate_avci_extradata()

int ff_generate_avci_extradata ( AVStream * st )

Generate standard extradata for AVC-Intra based on width/height and field order.

Definition at line 1587 of file utils.c.

Referenced by mov_read_trak(), and mxf_parse_structural_metadata().

◆ ff_stream_add_bitstream_filter()

int ff_stream_add_bitstream_filter	(	AVStream *	st,
		const char *	name,
		const char *	args
	)

Add a bitstream filter to a stream.

Parameters

st	output stream to add a filter to
name	the name of the filter to add
args	filter-specific argument string

Returns: >0 on success; AVERROR code on failure

Definition at line 1790 of file utils.c.

Referenced by flv_check_bitstream(), gxf_write_header(), ivf_init(), latm_check_bitstream(), mkv_check_bitstream(), mov_check_bitstream(), mpegts_check_bitstream(), and mxf_init().

◆ ff_stream_encode_params_copy()

int ff_stream_encode_params_copy	(	AVStream *	dst,
		const AVStream *	src
	)

Copy encoding parameters from source to destination stream.

Parameters

dst	pointer to destination AVStream
src	pointer to source AVStream

Returns: >=0 on success, AVERROR code on error

Definition at line 586 of file utils.c.

Referenced by fifo_mux_init(), open_slave(), segment_mux_init(), and webm_chunk_init().

◆ ff_stream_side_data_copy()

int ff_stream_side_data_copy	(	AVStream *	dst,
		const AVStream *	src
	)

Copy side data from source to destination stream.

Parameters

dst	pointer to destination AVStream
src	pointer to source AVStream

Returns: >=0 on success, AVERROR code on error

Definition at line 614 of file utils.c.

Referenced by copy_stream_props(), and ff_stream_encode_params_copy().

◆ ff_rename()

int ff_rename	(	const char *	url_src,
		const char *	url_dst,
		void *	logctx
	)

Wrap ffurl_move() and log if error happens.

Parameters

url_src	source path
url_dst	destination path

Returns: 0 or AVERROR on failure

Definition at line 665 of file avio.c.

Referenced by create_master_playlist(), dash_flush(), hds_flush(), hls_rename_temp_file(), hls_window(), ism_flush(), segment_end(), sls_flag_file_rename(), write_abst(), write_hls_media_playlist(), write_manifest(), and write_packet().

◆ ff_alloc_extradata()

int ff_alloc_extradata	(	AVCodecParameters *	par,
		int	size
	)

Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0.

Previously allocated extradata in par will be freed.

Parameters

size	size of extradata

Returns: 0 if OK, AVERROR_xxx on error

Definition at line 451 of file utils.c.

Referenced by ace_read_header(), adts_write_packet(), afc_read_header(), ape_read_header(), apng_read_header(), celt_header(), codec2_read_header(), codec2raw_read_header(), concat_parse_script(), copy_stream_props(), dfa_read_header(), encode_intervals(), ff_generate_avci_extradata(), ff_get_extradata(), ff_parse_mpeg2_descriptor(), flac_header(), flv_set_video_codec(), flv_write_packet(), fsb_read_header(), genh_read_header(), hca_read_header(), hcom_read_header(), hevc_parse_sdp_line(), hnm_read_header(), iff_read_header(), latm_write_packet(), microdvd_read_header(), mkv_check_new_extra_data(), mov_create_chapter_track(), mov_read_dops(), mov_rewrite_dvd_sub_extradata(), msf_read_header(), mxf_parse_structural_metadata(), nist_read_header(), ogm_header(), oma_read_header(), opus_header(), opus_write_extradata(), parse_fmtp_config(), parse_packed_headers(), qdm2_parse_config(), read_header(), read_kuki_chunk(), redspark_read_header(), rsd_read_header(), seg_write_packet(), smacker_read_header(), smush_read_header(), speex_header(), svq3_parse_packet(), track_header(), tta_read_header(), update_stream_extradata(), vmd_read_header(), vqf_read_header(), wsvqa_read_packet(), wv_read_header(), xmv_process_packet_header(), and xwma_read_header().

◆ ff_get_extradata()

int ff_get_extradata	(	AVFormatContext *	s,
		AVCodecParameters *	par,
		AVIOContext *	pb,
		int	size
	)

Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and fill it from pb.

Parameters

size	size of extradata

Returns: >= 0 if OK, AVERROR_xxx on error

Definition at line 469 of file utils.c.

Referenced by aax_read_header(), acm_read_header(), adx_read_header(), aiff_read_header(), aix_read_header(), apc_read_header(), ape_tag_read_field(), avi_read_header(), bfi_read_header(), decode_stream_header(), ff_get_wav_header(), ff_mp4_read_dec_config_descr(), flv_get_extradata(), get_codec_data(), idcin_read_header(), mov_parse_stsd_data(), mov_read_dfla(), mov_read_dvc1(), mov_read_glbl(), mov_read_strf(), mov_read_wave(), mpc8_read_header(), mpc_read_header(), parse_video_info(), read_header(), read_kuki_chunk(), rl2_read_header(), rm_read_extradata(), rsd_read_header(), vc1t_read_header(), wsvqa_read_header(), and yop_read_header().

◆ ff_rfps_add_frame()

int ff_rfps_add_frame	(	AVFormatContext *	ic,
		AVStream *	st,
		int64_t	dts
	)

add frame for rfps calculation.

Parameters

dts	timestamp of the i-th frame

Returns: 0 if OK, AVERROR_xxx on error

Definition at line 2147 of file demux.c.

Referenced by avformat_find_stream_info(), and mov_build_index().

◆ ff_rfps_calculate()

void ff_rfps_calculate ( AVFormatContext * ic )

Definition at line 2207 of file demux.c.

Referenced by avformat_find_stream_info(), and mov_read_header().

◆ ff_copy_whiteblacklists()

int ff_copy_whiteblacklists	(	AVFormatContext *	dst,
		const AVFormatContext *	src
	)

Copies the whilelists from one context to the other.

Definition at line 115 of file utils.c.

Referenced by ff_wms_parse_sdp_a_line(), hls_read_header(), ism_write_header(), open_file(), open_track_resource_context(), rdt_init(), read_gab2_sub(), reopen_demux_for_component(), and sap_read_header().

◆ ff_format_output_open()

int ff_format_output_open	(	AVFormatContext *	s,
		const char *	url,
		AVDictionary **	options
	)

Utility function to open IO stream of output format.

Parameters

s	AVFormatContext
url	URL or file name to open for writing @options optional options which will be passed to io_open callback

Returns: >=0 on success, negative AVERROR in case of failure

Definition at line 1833 of file utils.c.

Referenced by fifo_thread_write_header(), and open_slave().

◆ ff_format_io_close()

int ff_format_io_close	(	AVFormatContext *	s,
		AVIOContext **	pb
	)

Definition at line 1848 of file utils.c.

Referenced by chunk_end(), close_file(), close_slave(), copy_moof(), dash_free(), dash_read_packet(), dash_seek(), dashenc_delete_file(), dashenc_io_close(), dashenc_io_open(), ff_format_shift_data(), ff_img_read_packet(), fifo_thread_write_trailer(), find_index_range(), free_playlist_list(), free_representation(), hds_free(), hls_close(), hls_deinit(), hls_delete_file(), hls_encryption_start(), hls_read_header(), hls_read_seek(), hls_write_packet(), hls_write_trailer(), hlsenc_io_close(), hlsenc_io_open(), mov_read_close(), open_input(), open_url_keepalive(), parse_assetmap(), parse_fragment(), parse_playlist(), read_close(), read_data(), read_header(), recheck_discard_flags(), seg_free(), seg_write_header(), segment_end(), update_init_section(), webm_chunk_deinit(), webm_chunk_write_header(), write_abst(), write_and_close(), write_manifest(), and write_packet().

◆ ff_format_io_close_default()

void ff_format_io_close_default	(	AVFormatContext *	s,
		AVIOContext *	pb
	)

Definition at line 1843 of file utils.c.

Referenced by avformat_alloc_context(), and ff_format_io_close().

◆ ff_is_http_proto()

int ff_is_http_proto ( const char * filename )

Utility function to check if the file uses http or https protocol.

Parameters

s	AVFormatContext
filename	URL or file name to open for writing

Definition at line 1861 of file utils.c.

Referenced by dashenc_delete_file(), dashenc_io_close(), dashenc_io_open(), hls_init(), hlsenc_io_close(), hlsenc_io_open(), and set_http_options().

◆ ff_parse_creation_time_metadata()

int ff_parse_creation_time_metadata	(	AVFormatContext *	s,
		int64_t *	timestamp,
		int	return_seconds
	)

Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails.

Parameters

s	AVFormatContext
timestamp	parsed timestamp in microseconds, only set on successful parsing
return_seconds	set this to get the number of seconds in timestamp instead of microseconds

Returns: 1 if OK, 0 if the metadata was not present, AVERROR(EINVAL) on parse error

Definition at line 1866 of file utils.c.

Referenced by asf_write_header1(), dv_init_mux(), ff_standardize_creation_time(), gxf_write_umf_material_description(), mkv_write_header(), mov_write_header(), and mxf_init().

◆ ff_standardize_creation_time()

int ff_standardize_creation_time ( AVFormatContext * s )

Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.

Parameters

s	AVFormatContext

Returns: <0 on error

Definition at line 1883 of file utils.c.

Referenced by caf_write_header(), ff_ape_write_tag(), ff_id3v2_write_metadata(), lrc_write_header(), smjpeg_write_header(), write_globalinfo(), write_metadata(), and write_table_entries_attrib().

◆ ff_reshuffle_raw_rgb()

int ff_reshuffle_raw_rgb	(	AVFormatContext *	s,
		AVPacket **	ppkt,
		AVCodecParameters *	par,
		int	expected_stride
	)

Reshuffles the lines to use the user specified stride.

Parameters

ppkt	input and output packet

Returns: negative error code or 0 if no new packet was allocated non-zero if a new packet was allocated and ppkt has to be freed CONTAINS_PAL if in addition to a new packet the old contained a palette

Definition at line 25 of file rawutils.c.

Referenced by avi_write_packet(), and mov_write_packet().

◆ ff_get_packet_palette()

int ff_get_packet_palette	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int	ret,
		uint32_t *	palette
	)

Retrieves the palette from a packet, either from side data, or appended to the video data in the packet itself (raw video only).

It is commonly used after a call to ff_reshuffle_raw_rgb().

Use 0 for the ret parameter to check for side data only.

Parameters

pkt	pointer to packet before calling ff_reshuffle_raw_rgb()
ret	return value from ff_reshuffle_raw_rgb(), or 0
palette	pointer to palette buffer

Returns: negative error code or 1 if the packet has a palette, else 0

Definition at line 1892 of file utils.c.

Referenced by avi_write_packet(), and mov_write_packet().

◆ ff_bprint_to_codecpar_extradata()

int ff_bprint_to_codecpar_extradata	(	AVCodecParameters *	par,
		struct AVBPrint *	buf
	)

Finalize buf into extradata and set its size appropriately.

Definition at line 1916 of file utils.c.

Referenced by ass_read_header(), jacosub_read_header(), sami_read_header(), and subviewer_read_header().

◆ ff_interleaved_peek()

const AVPacket* ff_interleaved_peek	(	AVFormatContext *	s,
		int	stream
	)

Find the next packet in the interleaving queue for the given stream.

Returns: a pointer to a packet if one was found, NULL otherwise.

Definition at line 1049 of file mux.c.

Referenced by mov_flush_fragment().

◆ ff_get_muxer_ts_offset()

int ff_get_muxer_ts_offset	(	AVFormatContext *	s,
		int	stream_index,
		int64_t *	offset
	)

Definition at line 1033 of file mux.c.

Referenced by mov_flush_fragment().

◆ ff_lock_avformat()

int ff_lock_avformat ( void )

Definition at line 77 of file utils.c.

Referenced by avisynth_read_close(), avisynth_read_header(), deinit(), ff_gnutls_deinit(), ff_gnutls_init(), ff_openssl_deinit(), ff_openssl_init(), and write_header().

◆ ff_unlock_avformat()

int ff_unlock_avformat ( void )

Definition at line 82 of file utils.c.

Referenced by avisynth_read_close(), avisynth_read_header(), deinit(), ff_gnutls_deinit(), ff_gnutls_init(), ff_openssl_deinit(), ff_openssl_init(), and write_header().

◆ ff_format_set_url()

void ff_format_set_url	(	AVFormatContext *	s,
		char *	url
	)

Set AVFormatContext url field to the provided pointer.

The pointer must point to a valid string. The existing url field is freed if necessary. Also set the legacy filename field to the same string which was provided in url.

Definition at line 2003 of file utils.c.

Referenced by hls_start(), parse_playlist(), sap_write_header(), set_segment_filename(), sls_flag_use_localtime_filename(), sls_flags_filename_process(), and webm_chunk_init().

◆ avpriv_register_devices()

void avpriv_register_devices	(	const AVOutputFormat *const	o[],
		const AVInputFormat *const	i[]
	)

Definition at line 583 of file allformats.c.

Referenced by avdevice_register_all().

◆ ff_format_shift_data()

int ff_format_shift_data	(	AVFormatContext *	s,
		int64_t	read_start,
		int	shift_size
	)

Make shift_size amount of space at read_start by shifting data in the output at read_start until the current IO position.

The underlying IO context must be seekable.

Definition at line 2039 of file utils.c.

Referenced by shift_data(), and write_header().

Data Structures

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

◆ MAX_URL_SIZE

◆ PROBE_BUF_MIN

◆ PROBE_BUF_MAX

◆ hex_dump_debug

◆ FF_FMT_INIT_CLEANUP

◆ MAX_STD_TIMEBASES

◆ MAX_REORDER_DELAY

◆ dynarray_add

◆ RELATIVE_TS_BASE

◆ NTP_OFFSET

◆ NTP_OFFSET_US

◆ SPACE_CHARS

◆ FFERROR_REDO

◆ CONTAINS_PAL

Typedef Documentation

◆ ff_parse_key_val_cb

Enumeration Type Documentation

◆ AVWriteUncodedFrameFlags

Function Documentation

◆ ffformatcontext()

◆ ffstream()

◆ cffstream()

◆ avpriv_stream_set_need_parsing()

◆ is_relative()

◆ ff_wrap_timestamp()

◆ ff_flush_packet_queue()

◆ ff_mkdir_p()

◆ ff_data_to_hex()

◆ ff_hex_to_data()

◆ ff_interleave_add_packet()

◆ ff_read_frame_flush()

◆ ff_ntp_time()

◆ ff_get_formatted_ntp_time()

◆ ff_parse_ntp_time()

◆ ff_sdp_write_media()

◆ ff_write_chained()

◆ ff_get_line()

◆ ff_get_chomp_line()

◆ ff_parse_key_value()

◆ ff_find_stream_index()

◆ ff_index_search_timestamp()

◆ ff_add_index_entry()

◆ ff_configure_buffers_for_index()

◆ avpriv_new_chapter()

◆ ff_reduce_index()

◆ ff_guess_image2_codec()

◆ ff_find_decoder()

◆ ff_seek_frame_binary()

◆ avpriv_update_cur_dts()

◆ ff_find_last_ts()

◆ ff_gen_search()

◆ avpriv_set_pts_info()

◆ ff_add_param_change()

◆ ff_framehash_write_header()

◆ ff_read_packet()

◆ ff_add_attached_pic()

◆ ff_interleave_packet_per_dts()

◆ ff_interleave_packet_passthrough()

◆ ff_free_stream()

◆ ff_codec_get_tag()

◆ ff_codec_get_id()

◆ ff_is_intra_only()

◆ ff_get_pcm_codec_id()

◆ ff_choose_timebase()

◆ ff_choose_chroma_location()

◆ ff_generate_avci_extradata()

◆ ff_stream_add_bitstream_filter()

◆ ff_stream_encode_params_copy()

◆ ff_stream_side_data_copy()

◆ ff_rename()

◆ ff_alloc_extradata()

◆ ff_get_extradata()

◆ ff_rfps_add_frame()

◆ ff_rfps_calculate()