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 | 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 | MAX_STD_TIMEBASES (30*12+30+3+6) |
#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" |
#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 | |
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) |
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... | |
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_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... | |
int64_t | ff_read_line_to_bprint (AVIOContext *s, AVBPrint *bp) |
Read a whole line of text from AVIOContext to an AVBPrint buffer. More... | |
int64_t | ff_read_line_to_bprint_overwrite (AVIOContext *s, AVBPrint *bp) |
Read a whole line of text from AVIOContext to an AVBPrint buffer overwriting its contents. 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, 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) |
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 an AVPacket per dts so it can be muxed. 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) |
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_rename (const char *url_src, const char *url_dst, void *logctx) |
Wrap avpriv_io_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... | |
void | ff_format_io_close (AVFormatContext *s, AVIOContext **pb) |
int | ff_is_http_proto (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[]) |
#define MAX_URL_SIZE 4096 |
Definition at line 30 of file internal.h.
#define PROBE_BUF_MIN 2048 |
size of probe buffer, for guessing file type from file contents
Definition at line 33 of file internal.h.
#define PROBE_BUF_MAX (1 << 20) |
Definition at line 34 of file internal.h.
#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.
#define RAW_PACKET_BUFFER_SIZE 2500000 |
Remaining size available for raw_packet_buffer, in bytes.
Definition at line 104 of file internal.h.
#define MAX_STD_TIMEBASES (30*12+30+3+6) |
Definition at line 206 of file internal.h.
#define MAX_REORDER_DELAY 16 |
Definition at line 317 of file internal.h.
#define dynarray_add | ( | tab, | |
nb_ptr, | |||
elem | |||
) |
Definition at line 355 of file internal.h.
#define NTP_OFFSET 2208988800ULL |
Definition at line 399 of file internal.h.
#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL) |
Definition at line 400 of file internal.h.
#define SPACE_CHARS " \t\r\n" |
Definition at line 499 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 793 of file internal.h.
#define CONTAINS_PAL 2 |
Definition at line 839 of file internal.h.
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 511 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 774 of file internal.h.
int ff_mkdir_p | ( | const char * | path | ) |
Automatically create sub-directories.
path | will create sub-directories by path |
Definition at line 4862 of file utils.c.
Referenced by format_name(), and hls_start().
Definition at line 4896 of file utils.c.
Referenced by do_encrypt(), 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 4917 of file utils.c.
Referenced by parse_fmtp_config(), and parse_playlist().
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.
Definition at line 830 of file mux.c.
Referenced by ff_interleave_packet_per_dts(), gxf_interleave_packet(), and mxf_interleave().
void ff_read_frame_flush | ( | AVFormatContext * | s | ) |
Flush the frame reader.
Definition at line 1892 of file utils.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().
uint64_t ff_ntp_time | ( | void | ) |
Get the current time since NTP epoch in microseconds.
Definition at line 4709 of file utils.c.
Referenced by mov_write_prft_tag(), rtp_write_header(), rtp_write_packet(), and rtp_write_trailer().
uint64_t ff_get_formatted_ntp_time | ( | uint64_t | ntp_time_us | ) |
Get the NTP time stamp formatted as per the RFC-5905.
ntp_time | NTP time in micro seconds (since NTP epoch) |
Definition at line 4714 of file utils.c.
Referenced by mov_write_prft_tag().
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 851 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 1328 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_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 789 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().
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.
s | the read-only AVIOContext |
buf | buffer to store the read line |
maxlen | size of the buffer |
Definition at line 806 of file aviobuf.c.
Referenced by parse_playlist().
int64_t ff_read_line_to_bprint | ( | AVIOContext * | s, |
AVBPrint * | bp | ||
) |
Read a whole line of text from AVIOContext to an AVBPrint buffer.
Stop reading after reaching a \r, a \n, a \r\n, a \0 or EOF. The line ending characters are NOT included in the buffer, but they are skipped on the input.
s | the read-only AVIOContext |
bp | the AVBPrint buffer |
Definition at line 814 of file aviobuf.c.
Referenced by ff_read_line_to_bprint_overwrite().
int64_t ff_read_line_to_bprint_overwrite | ( | AVIOContext * | s, |
AVBPrint * | bp | ||
) |
Read a whole line of text from AVIOContext to an AVBPrint buffer overwriting its contents.
Stop reading after reaching a \r, a \n, a \r\n, a \0 or EOF. The line ending characters are NOT included in the buffer, but they are skipped on the input.
s | the read-only AVIOContext |
bp | the AVBPrint buffer |
Definition at line 845 of file aviobuf.c.
Referenced by concat_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 4975 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 5029 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 2022 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 1954 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 2065 of file utils.c.
Referenced by mov_read_header().
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.
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 4641 of file utils.c.
Referenced by aa_read_header(), asf_read_marker(), 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().
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 1941 of file utils.c.
Referenced by av_read_frame(), mpegps_read_pes_header(), mpegts_get_dts(), and read_frame_internal().
enum AVCodecID ff_guess_image2_codec | ( | const char * | filename | ) |
Definition at line 106 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 2145 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 1927 of file utils.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().
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 2213 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 2251 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 4945 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(), amr_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(), 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(), 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_parse_structural_metadata(), mxf_write_header(), 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(), sdr2_read_header(), sds_read_header(), seg_init(), seq_read_header(), ser_read_header(), 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_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 5077 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 811 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 an AVPacket per dts so it can be muxed.
s | an AVFormatContext for output. pkt resp. out will be added to resp. taken from its packet buffer. |
out | the interleaved packet will be output here |
pkt | the input packet; will be blank on return if not NULL |
flush | 1 if no further packets are available as input and all remaining packets should be output |
Definition at line 932 of file mux.c.
Referenced by gxf_interleave_packet(), and interleave_packet().
void ff_free_stream | ( | AVFormatContext * | s, |
AVStream * | st | ||
) |
Definition at line 4428 of file utils.c.
Referenced by avi_read_header(), 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 943 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 3121 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().
enum AVCodecID ff_codec_get_id | ( | const AVCodecTag * | tags, |
unsigned int | tag | ||
) |
Definition at line 3131 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(), ircam_read_header(), lvf_read_header(), lxf_read_header(), mkv_write_codecprivate(), mkv_write_native_codecprivate(), mov_codec_id(), mov_skip_multiple_stsd(), nsv_parse_NSVs_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().
Definition at line 1006 of file utils.c.
Referenced by compute_pkt_fields(), and init_muxer().
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 3143 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 90 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 106 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 5370 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 5576 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_write_header().
Copy encoding parameters from source to destination stream.
Definition at line 4316 of file utils.c.
Referenced by fifo_mux_init(), and open_slave().
int ff_rename | ( | const char * | url_src, |
const char * | url_dst, | ||
void * | logctx | ||
) |
Wrap avpriv_io_move and log if error happens.
url_src | source path |
url_dst | destination path |
Definition at line 668 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().
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.
size | size of extradata |
Definition at line 3314 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(), 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().
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 3332 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_av1c(), 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().
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 3348 of file utils.c.
Referenced by avformat_find_stream_info(), and mov_build_index().
void ff_rfps_calculate | ( | AVFormatContext * | ic | ) |
Definition at line 3408 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 160 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(), reopen_demux_for_component(), and sap_read_header().
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 @options optional options which will be passed to io_open callback |
Definition at line 5682 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 5692 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_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_seek(), hls_write_packet(), hls_write_trailer(), hlsenc_io_close(), hlsenc_io_open(), mov_read_close(), open_input(), open_url_keepalive(), parse_fragment(), parse_playlist(), read_close(), read_data(), read_header(), recheck_discard_flags(), seg_free(), seg_write_header(), segment_end(), shift_data(), update_init_section(), webm_chunk_deinit(), webm_chunk_write_header(), write_abst(), write_header(), write_manifest(), and write_packet().
int ff_is_http_proto | ( | char * | filename | ) |
Utility function to check if the file uses http or https protocol.
s | AVFormatContext |
filename | URL or file name to open for writing |
Definition at line 5699 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().
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 5704 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_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 5721 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 5730 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 5755 of file utils.c.
Referenced by ass_read_header(), jacosub_read_header(), sami_read_header(), and subviewer_read_header().
const AVPacket* ff_interleaved_peek | ( | AVFormatContext * | s, |
int | stream | ||
) |
Find the next packet in the interleaving queue for the given stream.
Definition at line 1066 of file mux.c.
Referenced by mov_flush_fragment().
int ff_get_muxer_ts_offset | ( | AVFormatContext * | s, |
int | stream_index, | ||
int64_t * | offset | ||
) |
Definition at line 1050 of file mux.c.
Referenced by mov_flush_fragment().
int ff_lock_avformat | ( | void | ) |
Definition at line 79 of file utils.c.
Referenced by avisynth_read_close(), avisynth_read_header(), cleanup(), ff_gnutls_deinit(), ff_gnutls_init(), ff_openssl_deinit(), ff_openssl_init(), and write_header().
int ff_unlock_avformat | ( | void | ) |
Definition at line 84 of file utils.c.
Referenced by avisynth_read_close(), avisynth_read_header(), cleanup(), ff_gnutls_deinit(), ff_gnutls_init(), ff_openssl_deinit(), ff_openssl_init(), and write_header().
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 5862 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().
void avpriv_register_devices | ( | const AVOutputFormat *const | o[], |
const AVInputFormat *const | i[] | ||
) |
Definition at line 668 of file allformats.c.
Referenced by avdevice_register_all().