FFmpeg
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Data Structures | |
struct | AVCodecTag |
struct | CodecMime |
struct | FFFrac |
The exact value of the fractional number is: 'val + num / den'. More... | |
struct | AVFormatInternal |
struct | AVStreamInternal |
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 | MAX_PROBE_PACKETS 2500 |
#define | hex_dump_debug(class, buf, size) do { if (0) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size); } while(0) |
#define | RAW_PACKET_BUFFER_SIZE 2500000 |
Remaining size available for raw_packet_buffer, in bytes. More... | |
#define | dynarray_add(tab, nb_ptr, elem) |
#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 | |
struct tm * | ff_brktimegm (time_t secs, struct tm *tm) |
char * | ff_data_to_hex (char *buf, const uint8_t *src, int size, int lowercase) |
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 *, AVPacket *, AVPacket *)) |
Add packet to AVFormatContext->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... | |
void | ff_sdp_write_media (char *buff, int size, 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_v_length (uint64_t val) |
Get the length in bytes which is needed to store val as v. More... | |
void | ff_put_v (AVIOContext *bc, uint64_t val) |
Put val using a variable number of bytes. More... | |
int | ff_get_line (AVIOContext *s, char *buf, int maxlen) |
Read a whole line of text from AVIOContext. 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 (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, int 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) |
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 | ff_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 *s, 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_interleave_packet_per_dts (AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush) |
Interleave a packet per dts in an output media file. More... | |
void | ff_free_stream (AVFormatContext *s, AVStream *st) |
void | ff_compute_frame_duration (AVFormatContext *s, int *pnum, int *pden, AVStream *st, AVCodecParserContext *pc, AVPacket *pkt) |
Return the frame duration in seconds. 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... | |
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... | |
static int | ff_rename (const char *oldpath, const char *newpath, void *logctx) |
Wrap errno on rename() error. 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 | ffio_open2_wrapper (struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options) |
int | ff_format_output_open (AVFormatContext *s, const char *url, AVDictionary **options) |
Utility function to open IO stream of output format. More... | |
void | ff_format_io_close (AVFormatContext *s, AVIOContext **pb) |
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... | |
int | ff_interleaved_peek (AVFormatContext *s, int stream, AVPacket *pkt, int add_offset) |
Find the next packet in the interleaving queue for the given stream. More... | |
#define MAX_URL_SIZE 4096 |
Definition at line 30 of file internal.h.
Referenced by ftp_connect(), ftp_delete(), ftp_move(), ftp_set_dir(), http_open_cnx_internal(), http_read_header(), libssh_delete(), libssh_move(), libssh_open(), libssh_open_dir(), new_init_section(), open_input(), parse_location(), and parse_playlist().
#define PROBE_BUF_MIN 2048 |
size of probe buffer, for guessing file type from file contents
Definition at line 33 of file internal.h.
Referenced by av_probe_input_buffer2(), and ff_img_read_packet().
#define PROBE_BUF_MAX (1 << 20) |
Definition at line 34 of file internal.h.
Referenced by av_probe_input_buffer2(), av_probe_input_format3(), and mp3_read_probe().
#define MAX_PROBE_PACKETS 2500 |
Definition at line 36 of file internal.h.
Referenced by avformat_new_stream(), ff_read_frame_flush(), and set_codec_from_probe_data().
#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 41 of file internal.h.
#define RAW_PACKET_BUFFER_SIZE 2500000 |
Remaining size available for raw_packet_buffer, in bytes.
Definition at line 100 of file internal.h.
Referenced by avformat_alloc_context(), avformat_open_input(), and flush_packet_queue().
#define dynarray_add | ( | tab, | |
nb_ptr, | |||
elem | |||
) |
Definition at line 188 of file internal.h.
Referenced by add_renditions_to_variant(), av_new_program(), avpriv_new_chapter(), ff_rtsp_setup_output_streams(), matroska_parse_frame(), matroska_parse_rm_audio(), matroska_parse_webvtt(), new_init_section(), new_playlist(), new_rendition(), new_variant(), parse_playlist(), rtp_parse_addr_list(), and update_streams_from_subdemuxer().
#define NTP_OFFSET 2208988800ULL |
Definition at line 226 of file internal.h.
#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL) |
Definition at line 227 of file internal.h.
Referenced by ff_ntp_time(), and rtp_write_header().
#define SPACE_CHARS " \t\r\n" |
Definition at line 292 of file internal.h.
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 593 of file internal.h.
Referenced by ff_read_packet(), flv_read_packet(), lxf_read_packet(), and mpegps_read_pes_header().
#define CONTAINS_PAL 2 |
Definition at line 631 of file internal.h.
Referenced by ff_get_packet_palette().
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.
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 304 of file internal.h.
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 571 of file internal.h.
struct tm* ff_brktimegm | ( | time_t | secs, |
struct tm * | tm | ||
) |
Definition at line 31 of file cutils.c.
Referenced by dv_write_pack().
Definition at line 4552 of file utils.c.
Referenced by do_llnw_auth(), ff_rdt_calc_response_and_checksum(), hex_log(), hls_encryption_start(), make_digest_auth(), open_input(), and param_write_hex().
Parse a string of hexadecimal strings.
Any space between the hexadecimal digits is ignored.
data | if non-null, the parsed data is written to this pointer |
p | the string to parse |
Definition at line 4573 of file utils.c.
Referenced by parse_fmtp_config(), and parse_playlist().
int ff_interleave_add_packet | ( | AVFormatContext * | s, |
AVPacket * | pkt, | ||
int(*)(AVFormatContext *, AVPacket *, AVPacket *) | compare | ||
) |
Add packet to AVFormatContext->packet_buffer list, determining its interleaved position using compare() function argument.
Definition at line 979 of file mux.c.
Referenced by ff_audio_rechunk_interleave(), and ff_interleave_packet_per_dts().
void ff_read_frame_flush | ( | AVFormatContext * | s | ) |
Flush the frame reader.
Definition at line 1859 of file utils.c.
Referenced by asf_read_pts(), avformat_flush(), avformat_seek_file(), ff_seek_frame_binary(), hls_read_seek(), mpegts_get_dts(), seek_frame_generic(), and seek_frame_internal().
uint64_t ff_ntp_time | ( | void | ) |
Get the current time since NTP epoch in microseconds.
Definition at line 4416 of file utils.c.
Referenced by rtp_write_header(), rtp_write_packet(), and rtp_write_trailer().
void ff_sdp_write_media | ( | char * | buff, |
int | size, | ||
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.
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 |
Definition at line 832 of file sdp.c.
Referenced by mov_write_udta_sdp().
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.
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 |
src | the muxer the packet originally was intended for |
interleave | 0->use av_write_frame, 1->av_interleaved_write_frame |
Definition at line 1378 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().
int ff_get_v_length | ( | uint64_t | val | ) |
Get the length in bytes which is needed to store val as v.
Definition at line 426 of file aviobuf.c.
Referenced by ff_put_v(), and nut_write_packet().
void ff_put_v | ( | AVIOContext * | bc, |
uint64_t | val | ||
) |
Put val using a variable number of bytes.
Definition at line 436 of file aviobuf.c.
Referenced by nut_write_packet(), put_packet(), put_s(), put_str(), put_tt(), write_chapter(), write_globalinfo(), write_index(), write_mainheader(), write_sm_data(), write_streamheader(), and write_streaminfo().
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.
s | the read-only AVIOContext |
buf | buffer to store the read line |
maxlen | size of the buffer |
Definition at line 777 of file aviobuf.c.
Referenced by aqt_read_header(), concat_read_header(), 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(), read_chomp_line(), stl_read_header(), subviewer1_read_header(), subviewer_read_header(), and vplayer_read_header().
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.
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 4631 of file utils.c.
Referenced by ff_http_auth_handle_header(), and parse_playlist().
int ff_find_stream_index | ( | AVFormatContext * | s, |
int | id | ||
) |
Find stream index based on format-specific stream ID.
Definition at line 4685 of file utils.c.
Referenced by get_sindex(), parse_chunks(), pmt_cb(), and scte_data_cb().
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 1989 of file utils.c.
Referenced by av_index_search_timestamp(), ff_add_index_entry(), mxf_read_seek(), and read_seek().
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 1921 of file utils.c.
Referenced by av_add_index_entry(), read_header(), and scan_file().
void ff_configure_buffers_for_index | ( | AVFormatContext * | s, |
int64_t | time_tolerance | ||
) |
Definition at line 2032 of file utils.c.
Referenced by mov_read_header().
AVChapter* avpriv_new_chapter | ( | AVFormatContext * | s, |
int | id, | ||
AVRational | time_base, | ||
int64_t | start, | ||
int64_t | end, | ||
const char * | title | ||
) |
Add a new chapter.
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 |
Definition at line 4358 of file utils.c.
Referenced by asf_read_marker(), decode_info_header(), flac_read_header(), matroska_read_header(), mov_metadata_hmmt(), mov_read_chapters(), mov_read_chpl(), ogm_chapter(), read_chapter(), and read_header().
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 1908 of file utils.c.
Referenced by av_read_frame(), matroska_parse_block(), mpegps_read_pes_header(), mpegts_get_dts(), and read_frame_internal().
enum AVCodecID ff_guess_image2_codec | ( | const char * | filename | ) |
Definition at line 100 of file img2.c.
Referenced by ape_tag_read_field(), av_guess_codec(), av_guess_format(), ff_img_read_header(), and img_read_probe().
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().
target_ts | target timestamp in the time base of the given stream |
stream_index | stream number |
Definition at line 2104 of file utils.c.
Referenced by asf_read_seek(), ogg_read_seek(), rm_read_seek(), and seek_frame_internal().
void ff_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).
timestamp | new dts expressed in time_base of param ref_st |
ref_st | reference stream giving time_base of param timestamp |
Definition at line 1894 of file utils.c.
Referenced by ff_seek_frame_binary(), idcin_read_seek(), matroska_read_seek(), mp3_seek(), mpc8_read_seek(), mxf_read_seek(), read_seek(), and seek_frame_generic().
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 2172 of file utils.c.
Referenced by ff_gen_search(), and find_duration().
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().
target_ts | target timestamp in the time base of the given stream |
stream_index | stream number |
Definition at line 2210 of file utils.c.
Referenced by ff_seek_frame_binary(), and read_seek().
void avpriv_set_pts_info | ( | AVStream * | s, |
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.
s | 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 4601 of file utils.c.
Referenced by acm_read_header(), 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(), amr_read_header(), ape_read_header(), apng_read_header(), aqt_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(), avformat_new_stream(), avi_read_header(), avi_write_header(), avisynth_create_stream_audio(), avisynth_create_stream_video(), avr_read_header(), bfi_read_header(), bmv_read_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), cine_read_header(), create_audio_stream(), create_new_audio_stream(), create_stream(), daala_header(), dc1394_read_common(), dcstr_read_header(), decklink_setup_audio(), decklink_setup_video(), decode_stream_header(), dfa_read_header(), dirac_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_decklink_read_header(), ff_img_read_header(), ff_raw_video_read_header(), ff_rm_read_mdpr_codecdata(), ff_voc_get_packet(), ffm2_read_header(), ffm_read_header(), ffm_write_header(), film_read_header(), flac_header(), flac_read_header(), flic_read_header(), flv_write_header(), fsb_read_header(), g722_read_header(), g723_1_init(), g729_read_header(), gdigrab_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(), hls_write_header(), hnm_read_header(), idcin_read_header(), iff_read_header(), ilbc_read_header(), init_audio(), init_muxer(), init_stream(), init_video_stream(), ipmovie_read_header(), ircam_read_header(), iss_read_header(), jacosub_read_header(), lavfi_read_header(), lmlm4_read_header(), loas_read_header(), lrc_read_header(), lrc_write_header(), lvf_read_header(), lxf_read_header(), matroska_parse_tracks(), microdvd_read_header(), microdvd_write_header(), mkv_init(), mmf_read_header(), modplug_read_header(), 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_parse_structural_metadata(), mxf_write_header(), mxg_read_header(), nc_read_header(), new_stream(), nist_read_header(), nsv_parse_NSVs_header(), nut_read_header(), nut_write_header(), nuv_header(), ogg_build_vp8_headers(), ogg_new_stream(), ogg_write_header(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), opus_header(), parse_audio_var(), parse_strk(), parse_video_var(), parse_vtrk(), pcm_read_header(), pjs_read_header(), pmp_header(), pulse_read_header(), pulse_write_header(), pva_read_header(), pvf_read_header(), qt_rtp_parse_packet(), qtkit_read_header(), r3d_read_red1(), r3d_read_reda(), rawvideo_read_header(), read_frame(), read_gab2_sub(), read_header(), read_header_gme(), read_header_openmpt(), 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(), sdr2_read_header(), sds_read_header(), seg_init(), seq_read_header(), set_stream_info_from_input_stream(), siff_parse_vbv1(), 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(), svag_read_header(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), theora_header(), thp_read_header(), threedostr_read_header(), tmv_read_header(), tta_read_header(), tta_write_header(), txd_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_write_header(), webp_write_header(), 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().
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 4735 of file utils.c.
Referenced by flv_read_packet(), load_ipmovie_packet(), and swf_read_packet().
int ff_framehash_write_header | ( | AVFormatContext * | s | ) |
Set the timebase for each stream from the corresponding codec timebase and print it.
Definition at line 23 of file framehash.c.
Referenced by framecrc_write_header(), and write_header().
int ff_read_packet | ( | AVFormatContext * | s, |
AVPacket * | pkt | ||
) |
Read a transport packet from a media file.
s | media file handle |
pkt | is filled |
Definition at line 791 of file utils.c.
Referenced by asfrtp_parse_packet(), estimate_timings_from_pts(), get_subtitle_pkt(), read_frame_internal(), read_gab2_sub(), and seek_subtitle().
int ff_interleave_packet_per_dts | ( | AVFormatContext * | s, |
AVPacket * | out, | ||
AVPacket * | pkt, | ||
int | flush | ||
) |
Interleave a packet per dts in an output media file.
Packets with pkt->destruct == av_destruct_packet will be freed inside this function, so they cannot be used after it. Note that calling av_packet_unref() on them is still safe.
s | media file handle |
out | the interleaved packet will be output here |
pkt | the input packet |
flush | 1 if no further packets are available as input and all remaining packets should be output |
Definition at line 1080 of file mux.c.
Referenced by gxf_interleave_packet(), and interleave_packet().
void ff_free_stream | ( | AVFormatContext * | s, |
AVStream * | st | ||
) |
Definition at line 4158 of file utils.c.
Referenced by avformat_free_context(), and ff_rm_read_mdpr_codecdata().
void ff_compute_frame_duration | ( | AVFormatContext * | s, |
int * | pnum, | ||
int * | pden, | ||
AVStream * | st, | ||
AVCodecParserContext * | pc, | ||
AVPacket * | pkt | ||
) |
Return the frame duration in seconds.
Return 0 if not available.
Definition at line 909 of file utils.c.
Referenced by compute_pkt_fields(), and estimate_timings_from_pts().
unsigned int ff_codec_get_tag | ( | const AVCodecTag * | tags, |
enum AVCodecID | id | ||
) |
Definition at line 3040 of file utils.c.
Referenced by ast_write_header(), caf_write_header(), flv_write_header(), flv_write_packet(), gxf_write_header(), ipod_get_codec_tag(), ircam_write_header(), mkv_write_codecprivate(), mov_find_codec_tag(), mov_get_codec_tag(), mov_write_esds_tag(), mov_write_isml_manifest(), mp4_get_codec_tag(), smjpeg_write_header(), swf_write_video(), and write_stream_codec_info().
enum AVCodecID ff_codec_get_id | ( | const AVCodecTag * | tags, |
unsigned int | tag | ||
) |
Definition at line 3050 of file utils.c.
Referenced by asf_read_stream_properties(), ast_read_header(), av_codec_get_id(), avi_read_header(), create_new_audio_stream(), decode_stream_header(), ff_mp4_read_dec_config_descr(), ff_rm_read_mdpr_codecdata(), ff_voc_get_packet(), ff_wav_codec_get_id(), get_aiff_header(), get_codec_data(), get_qt_codec(), ircam_read_header(), lvf_read_header(), lxf_read_header(), matroska_parse_tracks(), mkv_write_codecprivate(), mkv_write_native_codecprivate(), mov_codec_id(), mov_skip_multiple_stsd(), nsv_parse_NSVs_header(), nut_read_header(), ogm_dshow_header(), ogm_header(), oma_read_header(), parse_dsd_prop(), parse_media_type(), parse_video_info(), read_desc_chunk(), read_header(), rm_read_audio_stream_info(), rsd_read_header(), rso_read_header(), smjpeg_read_header(), and swf_read_packet().
Select a PCM codec based on the given 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. |
Definition at line 3062 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().
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 102 of file mux.c.
Referenced by nut_write_header().
enum AVChromaLocation ff_choose_chroma_location | ( | AVFormatContext * | s, |
AVStream * | st | ||
) |
Chooses a timebase for muxing the specified stream.
Definition at line 118 of file mux.c.
Referenced by mxf_write_header().
Generate standard extradata for AVC-Intra based on width/height and field order.
Definition at line 4978 of file utils.c.
Referenced by mov_read_trak(), and mxf_parse_structural_metadata().
Add a bitstream filter to a stream.
st | output stream to add a filter to |
name | the name of the filter to add |
args | filter-specific argument string |
Definition at line 5188 of file utils.c.
Referenced by ivf_check_bitstream(), latm_check_bitstream(), mkv_check_bitstream(), mov_check_bitstream(), and mpegts_check_bitstream().
Copy encoding parameters from source to destination stream.
Definition at line 4055 of file utils.c.
Referenced by fifo_mux_init(), and open_slave().
Wrap errno on rename() error.
oldpath | source path |
newpath | destination path |
Definition at line 529 of file internal.h.
Referenced by hds_flush(), hls_rename_temp_file(), hls_window(), ism_flush(), segment_end(), sls_flag_file_rename(), write_abst(), write_manifest(), and write_packet().
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.
size | size of extradata |
Definition at line 3213 of file utils.c.
Referenced by acm_read_header(), afc_read_header(), ape_read_header(), celt_header(), copy_stream_props(), dfa_read_header(), encode_intervals(), ff_generate_avci_extradata(), ff_get_extradata(), ff_parse_mpeg2_descriptor(), filter_packet(), flac_header(), flic_read_header(), flv_set_video_codec(), fsb_read_header(), genh_read_header(), matroska_parse_tracks(), matroska_read_header(), mov_create_chapter_track(), msf_read_header(), mxf_parse_structural_metadata(), nist_read_header(), nut_read_header(), ogm_header(), oma_read_header(), opus_header(), parse_fmtp_config(), parse_packed_headers(), qdm2_parse_config(), read_header(), read_kuki_chunk(), redspark_read_header(), rsd_read_header(), smacker_read_header(), smush_read_header(), speex_header(), svq3_parse_packet(), tta_read_header(), vmd_read_header(), vqf_read_header(), wsvqa_read_packet(), xmv_process_packet_header(), xwma_read_header(), and yop_read_header().
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.
size | size of extradata |
Definition at line 3234 of file utils.c.
Referenced by adx_read_header(), aiff_read_header(), aix_read_header(), apc_read_header(), ape_tag_read_field(), avi_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(), read_header(), read_kuki_chunk(), rl2_read_header(), rm_read_extradata(), rsd_read_header(), vc1t_read_header(), and wsvqa_read_header().
int ff_rfps_add_frame | ( | AVFormatContext * | ic, |
AVStream * | st, | ||
int64_t | dts | ||
) |
add frame for rfps calculation.
dts | timestamp of the i-th frame |
Definition at line 3250 of file utils.c.
Referenced by avformat_find_stream_info(), and mov_build_index().
void ff_rfps_calculate | ( | AVFormatContext * | ic | ) |
Definition at line 3308 of file utils.c.
Referenced by avformat_find_stream_info(), and mov_read_header().
int ff_copy_whiteblacklists | ( | AVFormatContext * | dst, |
const AVFormatContext * | src | ||
) |
Copies the whilelists from one context to the other.
Definition at line 145 of file utils.c.
Referenced by ff_wms_parse_sdp_a_line(), hls_read_header(), ism_write_header(), open_file(), rdt_init(), read_gab2_sub(), and sap_read_header().
int ffio_open2_wrapper | ( | struct AVFormatContext * | s, |
AVIOContext ** | pb, | ||
const char * | url, | ||
int | flags, | ||
const AVIOInterruptCB * | int_cb, | ||
AVDictionary ** | options | ||
) |
int ff_format_output_open | ( | AVFormatContext * | s, |
const char * | url, | ||
AVDictionary ** | options | ||
) |
Utility function to open IO stream of output format.
s | AVFormatContext |
url | URL or file name to open for writing optional options which will be passed to io_open callback |
Definition at line 5303 of file utils.c.
Referenced by fifo_thread_write_header(), and open_slave().
void ff_format_io_close | ( | AVFormatContext * | s, |
AVIOContext ** | pb | ||
) |
Definition at line 5313 of file utils.c.
Referenced by chunk_end(), close_file(), close_slave(), copy_moof(), dash_flush(), dash_free(), ff_img_read_packet(), fifo_thread_write_trailer(), find_index_range(), free_playlist_list(), hds_free(), hls_delete_old_segments(), hls_encryption_start(), hls_read_seek(), hls_window(), hls_write_packet(), hls_write_trailer(), mov_read_close(), open_input(), parse_fragment(), parse_playlist(), read_close(), read_data(), read_header(), recheck_discard_flags(), seg_free(), seg_init(), seg_write_header(), seg_write_trailer(), segment_end(), shift_data(), update_init_section(), webm_chunk_write_header(), write_abst(), write_manifest(), and write_packet().
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.
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 |
Definition at line 5320 of file utils.c.
Referenced by asf_write_header1(), dv_init_mux(), ff_standardize_creation_time(), ffm_write_header(), gxf_write_umf_material_description(), mkv_write_header(), mov_write_header(), and mxf_write_header().
int ff_standardize_creation_time | ( | AVFormatContext * | s | ) |
Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.
s | AVFormatContext |
Definition at line 5337 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().
int ff_reshuffle_raw_rgb | ( | AVFormatContext * | s, |
AVPacket ** | ppkt, | ||
AVCodecParameters * | par, | ||
int | expected_stride | ||
) |
Reshuffles the lines to use the user specified stride.
ppkt | input and output packet |
Definition at line 25 of file rawutils.c.
Referenced by avi_write_packet(), and mov_write_packet().
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.
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 |
Definition at line 5346 of file utils.c.
Referenced by avi_write_packet(), and mov_write_packet().
int ff_bprint_to_codecpar_extradata | ( | AVCodecParameters * | par, |
struct AVBPrint * | buf | ||
) |
Finalize buf into extradata and set its size appropriately.
Definition at line 5371 of file utils.c.
Referenced by ass_read_header(), jacosub_read_header(), sami_read_header(), and subviewer_read_header().
int ff_interleaved_peek | ( | AVFormatContext * | s, |
int | stream, | ||
AVPacket * | pkt, | ||
int | add_offset | ||
) |
Find the next packet in the interleaving queue for the given stream.
The pkt parameter is filled in with the queued packet, including references to the data (which the caller is not allowed to keep or modify).
Definition at line 1199 of file mux.c.
Referenced by mov_flush_fragment().