#include <stdint.h>
#include "libavcodec/packet_internal.h"
#include "avformat.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	AVOID_NEGATIVE_TS_ENABLED(status) ((status) >= 0)

#define	MAX_REORDER_DELAY 16

#define	dynarray_add(tab, nb_ptr, elem)

#define	NTP_OFFSET 2208988800ULL

#define	NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)

#define	SPACE_CHARS " \t\r\n"

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...

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)

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...

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_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...

enum AVCodecID	ff_guess_image2_codec (const char *filename)

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

void	ff_remove_stream (AVFormatContext s, AVStream st)
	Remove a stream from its AVFormatContext and free it. More...

void	ff_remove_stream_group (AVFormatContext s, AVStreamGroup stg)
	Remove a stream group from its AVFormatContext and free it. More...

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

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

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...

AVStream *	ff_stream_clone (AVFormatContext dst_ctx, const AVStream src)
	Create a new stream and copy to it all parameters from a source stream, with the exception of the index field, which is set when the new stream is created. 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_copy_whiteblacklists (AVFormatContext dst, const AVFormatContext src)
	Copies the whilelists from one context to the other. More...

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

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

int	ff_match_url_ext (const char url, const char extensions)
	Return a positive value if the given url has one of the given extensions, negative AVERROR on error, 0 otherwise. More...

int	ff_get_frame_filename (char buf, int buf_size, const char path, int64_t number, int flags)
	Return in 'buf' the path with 'd' replaced by a number. More...

Macro Definition Documentation

◆ MAX_URL_SIZE

#define MAX_URL_SIZE 4096

Definition at line 30 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 33 of file internal.h.

◆ PROBE_BUF_MAX

#define PROBE_BUF_MAX (1 << 20)

Definition at line 34 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 39 of file internal.h.

◆ AVOID_NEGATIVE_TS_ENABLED

#define AVOID_NEGATIVE_TS_ENABLED ( status ) ((status) >= 0)

Definition at line 79 of file internal.h.

◆ MAX_REORDER_DELAY

#define MAX_REORDER_DELAY 16

Definition at line 278 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 369 of file internal.h.

◆ NTP_OFFSET

#define NTP_OFFSET 2208988800ULL

Definition at line 414 of file internal.h.

◆ NTP_OFFSET_US

#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)

Definition at line 415 of file internal.h.

◆ SPACE_CHARS

#define SPACE_CHARS " \t\r\n"

Definition at line 482 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 494 of file internal.h.

Function Documentation

◆ ffformatcontext()

static av_always_inline FFFormatContext* ffformatcontext ( AVFormatContext * s )

static

Definition at line 127 of file internal.h.

Referenced by amv_init(), asf_build_simple_index(), asf_read_header(), asf_read_pts(), asf_read_seek(), av_interleaved_write_frame(), av_read_frame(), av_write_frame(), av_write_trailer(), avformat_find_stream_info(), avformat_new_stream(), avi_write_header(), codec2_read_header(), create_stream(), dsf_read_packet(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), ff_gen_search(), ff_interleave_add_packet(), ff_interleaved_peek(), ff_pcm_read_seek(), ff_read_frame_flush(), flac_queue_flush(), flac_read_timestamp(), flv_read_header(), init_pts(), ipmovie_read_header(), mkv_init(), mkv_write_track(), mov_init(), mp3_queue_flush(), mp3_read_header(), mp3_seek(), mpegts_init(), mtv_read_packet(), mxf_interleave_get_packet(), nut_read_header(), ogg_get_length(), ogg_packet(), ogg_reset(), r3d_read_header(), read_header(), seek_frame_byte(), seek_frame_generic(), ser_read_packet(), smacker_read_seek(), tee_write_packet(), tta_queue_flush(), 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 358 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_guess_frame_rate(), av_index_search_timestamp(), av_write_trailer(), avformat_find_stream_info(), avformat_index_get_entry(), avformat_index_get_entry_from_timestamp(), 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(), can_seek_to_key_sample(), check_stream_max_drift(), cine_read_packet(), clean_index(), clear_index_entries(), compute_frame_duration(), compute_muxer_pkt_fields(), compute_pkt_fields(), concat_read_packet(), create_new_audio_stream(), dash_check_bitstream(), decode_frame(), dhav_read_seek(), dtshd_read_header(), dvdvideo_audio_stream_add(), dvdvideo_subp_stream_add(), dvdvideo_video_stream_add(), estimate_timings_from_pts(), evc_read_header(), extract_extradata(), extract_extradata_init(), ff_configure_buffers_for_index(), ff_free_stream(), 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_spdif_read_packet(), 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_seek(), flv_get_extradata(), flv_set_audio_codec(), flv_set_video_codec(), get_codec_data(), get_sindex(), gif_read_header(), guess_ni_flag(), gxf_seek(), handle_avoid_negative_ts(), handle_new_packet(), 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(), jpegxl_anim_read_header(), lmlm4_read_header(), loas_read_header(), lxf_read_header(), m4sl_cb(), mkv_write_track(), mov_build_index(), mov_estimate_video_delay(), mov_finalize_packet(), 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_chunk(), parse_packet(), pdv_read_packet(), pdv_read_seek(), prepare_input_packet(), probe_codec(), pva_read_header(), rdt_parse_sdp_line(), read_frame_internal(), read_header(), read_packet(), read_seek(), reset_index_position(), rka_read_packet(), rka_read_seek(), 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(), smacker_read_seek(), swf_read_packet(), tak_read_header(), tb_unreliable(), 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_timestamps(), update_wrap_reference(), voc_read_seek(), vp8_header(), vqf_read_seek(), webm_chunk_write_header(), 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 363 of file internal.h.

Referenced by av_find_default_stream_index(), av_guess_frame_rate(), av_stream_get_parser(), avformat_index_get_entries_count(), avformat_stream_group_add_stream(), dump_stream_format(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), ff_interleave_packet_per_dts(), has_codec_parameters(), and wrap_timestamp().

◆ 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 414 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 448 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(), mxf_umid_to_str(), 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 469 of file utils.c.

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

◆ ff_ntp_time()

uint64_t ff_ntp_time ( void )

Get the current time since NTP epoch in microseconds.

Definition at line 247 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 252 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 274 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 922 of file sdp.c.

Referenced by mov_write_udta_sdp().

◆ 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 769 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 786 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 497 of file utils.c.

Referenced by ff_http_auth_handle_header(), and parse_playlist().

◆ ff_guess_image2_codec()

enum AVCodecID ff_guess_image2_codec ( const char * filename )

Definition at line 125 of file img2.c.

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

◆ 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 867 of file avformat.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(), aea_read_header(), afc_read_header(), aiff_read_header(), aiff_write_header(), aix_read_header(), apac_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(), bonk_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(), daud_header(), dc1394_read_common(), dcstr_read_header(), decklink_setup_audio(), decklink_setup_video(), decode_stream_header(), derf_read_header(), dfa_read_header(), dfpwm_read_header(), dhav_read_packet(), dirac_header(), dsf_read_header(), dshow_add_device(), dss_read_header(), dtshd_read_header(), dvdvideo_audio_stream_add(), dvdvideo_subp_stream_add(), dvdvideo_video_stream_add(), dxa_read_header(), ea_read_header(), epaf_read_header(), evc_read_header(), fbdev_read_header(), ff_argo_asf_fill_stream(), ff_decklink_read_header(), ff_decklink_write_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_init(), gif_read_header(), grab_read_header(), gsm_read_header(), gxf_header(), gxf_write_header(), hca_read_header(), hcom_read_header(), hls_write_header(), hnm_read_header(), iamf_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(), jpegxl_anim_read_header(), kmsgrab_read_header(), laf_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(), osq_read_header(), parse_audio_var(), parse_chunk(), parse_strk(), parse_video_var(), parse_vtrk(), pcm_read_header(), pdv_read_header(), pjs_read_header(), pmp_header(), pp_bnk_read_header(), pulse_read_header(), pulse_write_header(), pva_read_header(), pvf_read_header(), qoa_read_header(), qt_rtp_parse_packet(), r3d_read_red1(), r3d_read_reda(), rawvideo_read_header(), rcwt_read_header(), rcwt_write_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(), rka_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(), sdns_read_header(), 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_init(), sup_read_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(), 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(), wady_read_header(), wavarc_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(), xmd_read_header(), xmv_process_packet_header(), xvag_read_header(), xwma_read_header(), yop_read_header(), and yuv4_read_header().

◆ 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 25 of file framehash.c.

Referenced by framecrc_write_header(), and write_header().

◆ ff_remove_stream()

void ff_remove_stream	(	AVFormatContext *	s,
		AVStream *	st
	)

Remove a stream from its AVFormatContext and free it.

The stream must be the last stream of the AVFormatContext.

Definition at line 121 of file avformat.c.

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

◆ ff_remove_stream_group()

void ff_remove_stream_group	(	AVFormatContext *	s,
		AVStreamGroup *	stg
	)

Remove a stream group from its AVFormatContext and free it.

The stream group must be the last stream group of the AVFormatContext.

Definition at line 129 of file avformat.c.

Referenced by mov_parse_tiles().

◆ ff_codec_get_tag()

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

Definition at line 123 of file utils.c.

Referenced by ast_write_header(), caf_write_header(), flv_init(), flv_write_packet(), gxf_write_header(), ircam_write_header(), mkv_assemble_codecprivate(), mkv_write_track(), mov_find_codec_tag(), mov_get_codec_tag(), mov_write_esds_tag(), mov_write_isml_manifest(), put_eos_tag(), 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_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 144 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_stream_clone()

AVStream* ff_stream_clone	(	AVFormatContext *	dst_ctx,
		const AVStream *	src
	)

Create a new stream and copy to it all parameters from a source stream, with the exception of the index field, which is set when the new stream is created.

Parameters

dst_ctx	pointer to the context in which the new stream is created
src	pointer to source AVStream

Returns: pointer to the new stream or NULL on error

Definition at line 317 of file avformat.c.

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

◆ 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 861 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 227 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_update_codecprivate(), mov_create_chapter_track(), mov_read_dops(), msf_read_header(), mxf_parse_structural_metadata(), nist_read_header(), nsv_parse_NSVs_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(), sdns_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(), wavarc_read_header(), wsvqa_read_packet(), wv_read_header(), xmv_process_packet_header(), and xwma_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 912 of file avformat.c.

Referenced by dvdvideo_subdemux_open(), 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_io_close()

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

Definition at line 958 of file avformat.c.

Referenced by chunk_end(), close_file(), close_slave(), copy_moof(), dash_free(), dash_read_packet(), dash_seek(), 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_encryption_start(), hls_read_header(), hls_read_seek(), hls_write_packet(), hls_write_trailer(), hlsenc_io_close(), hlsenc_io_open(), mov_free_stream_context(), 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_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 572 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_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 577 of file utils.c.

Referenced by ass_read_header(), ff_dvdclut_palette_extradata_cat(), jacosub_read_header(), sami_read_header(), and subviewer_read_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 951 of file avformat.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().

◆ ff_match_url_ext()

int ff_match_url_ext	(	const char *	url,
		const char *	extensions
	)

Return a positive value if the given url has one of the given extensions, negative AVERROR on error, 0 otherwise.

Parameters

url	url to check against the given extensions
extensions	a comma-separated list of filename extensions

Definition at line 54 of file format.c.

Referenced by hls_probe().

◆ ff_get_frame_filename()

int ff_get_frame_filename	(	char *	buf,
		int	buf_size,
		const char *	path,
		int64_t	number,
		int	flags
	)

Return in 'buf' the path with 'd' replaced by a number.

Also handles the '%0nd' format where 'n' is the total number of digits and '%'.

Parameters

buf	destination buffer
buf_size	destination buffer size
path	path with substitution template
number	the number to substitute
flags	AV_FRAME_FILENAME_FLAGS_*

Returns: 0 if OK, -1 on format error

Definition at line 283 of file utils.c.

Referenced by av_get_frame_filename(), av_get_frame_filename2(), and write_packet().

Data Structures

Macros

Typedefs

Functions

Macro Definition Documentation

◆ MAX_URL_SIZE

◆ PROBE_BUF_MIN

◆ PROBE_BUF_MAX

◆ hex_dump_debug

◆ AVOID_NEGATIVE_TS_ENABLED

◆ MAX_REORDER_DELAY

◆ dynarray_add

◆ NTP_OFFSET

◆ NTP_OFFSET_US

◆ SPACE_CHARS

Typedef Documentation

◆ ff_parse_key_val_cb

Function Documentation

◆ ffformatcontext()

◆ ffstream()

◆ cffstream()

◆ ff_mkdir_p()

◆ ff_data_to_hex()

◆ ff_hex_to_data()

◆ ff_ntp_time()

◆ ff_get_formatted_ntp_time()

◆ ff_parse_ntp_time()

◆ ff_sdp_write_media()

◆ ff_get_line()

◆ ff_get_chomp_line()

◆ ff_parse_key_value()

◆ ff_guess_image2_codec()

◆ avpriv_set_pts_info()

◆ ff_framehash_write_header()

◆ ff_remove_stream()

◆ ff_remove_stream_group()

◆ ff_codec_get_tag()

◆ ff_codec_get_id()

◆ ff_get_pcm_codec_id()

◆ ff_stream_clone()

◆ ff_rename()

◆ ff_alloc_extradata()

◆ ff_copy_whiteblacklists()

◆ ff_format_io_close()

◆ ff_is_http_proto()

◆ ff_bprint_to_codecpar_extradata()

◆ ff_format_set_url()

◆ ff_match_url_ext()

◆ ff_get_frame_filename()