FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
aviobuf.c File Reference
#include "libavutil/bprint.h"
#include "libavutil/crc.h"
#include "libavutil/dict.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "libavcodec/defs.h"
#include "avio.h"
#include "avio_internal.h"
#include "internal.h"
#include "url.h"
#include <stdarg.h>

Go to the source code of this file.

Data Structures

struct  DynBuffer
 

Macros

#define IO_BUFFER_SIZE   32768
 
#define SHORT_SEEK_THRESHOLD   32768
 Do seeks within this distance ahead of the current buffer by skipping data instead of calling the protocol seek function, for seekable protocols. More...
 
#define OFFSET(x)   offsetof(AVIOContext,x)
 
#define E   AV_OPT_FLAG_ENCODING_PARAM
 
#define D   AV_OPT_FLAG_DECODING_PARAM
 
#define PUT_STR16(type, big_endian)
 
#define GET_STR16(type, read)
 

Enumerations

enum  FFBPrintReadStringMode { FFBPrintReadString = 0, FFBPrintReadLine = 1 }
 

Functions

static void * ff_avio_child_next (void *obj, void *prev)
 
static const AVClasschild_class_iterate (void **iter)
 
static void fill_buffer (AVIOContext *s)
 
static int url_resetbuf (AVIOContext *s, int flags)
 
static int set_buf_size (AVIOContext *s, int buf_size)
 
void ffio_init_context (FFIOContext *ctx, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
 
AVIOContextavio_alloc_context (unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
 Allocate and initialize an AVIOContext for buffered I/O. More...
 
void avio_context_free (AVIOContext **ps)
 Free the supplied IO context and everything associated with it. More...
 
static void writeout (AVIOContext *s, const uint8_t *data, int len)
 
static void flush_buffer (AVIOContext *s)
 
void avio_w8 (AVIOContext *s, int b)
 
void ffio_fill (AVIOContext *s, int b, int64_t count)
 
void avio_write (AVIOContext *s, const unsigned char *buf, int size)
 
void avio_flush (AVIOContext *s)
 Force flushing of buffered data. More...
 
int64_t avio_seek (AVIOContext *s, int64_t offset, int whence)
 fseek() equivalent for AVIOContext. More...
 
int64_t avio_skip (AVIOContext *s, int64_t offset)
 Skip given number of bytes forward. More...
 
int64_t avio_size (AVIOContext *s)
 Get the filesize. More...
 
int avio_feof (AVIOContext *s)
 Similar to feof() but also returns nonzero on read errors. More...
 
void avio_wl32 (AVIOContext *s, unsigned int val)
 
void avio_wb32 (AVIOContext *s, unsigned int val)
 
int avio_put_str (AVIOContext *s, const char *str)
 Write a NULL-terminated string. More...
 
static int put_str16 (AVIOContext *s, const char *str, const int be)
 
void avio_wl64 (AVIOContext *s, uint64_t val)
 
void avio_wb64 (AVIOContext *s, uint64_t val)
 
void avio_wl16 (AVIOContext *s, unsigned int val)
 
void avio_wb16 (AVIOContext *s, unsigned int val)
 
void avio_wl24 (AVIOContext *s, unsigned int val)
 
void avio_wb24 (AVIOContext *s, unsigned int val)
 
void avio_write_marker (AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
 Mark the written bytestream as a specific type. More...
 
static int read_packet_wrapper (AVIOContext *s, uint8_t *buf, int size)
 
unsigned long ff_crc04C11DB7_update (unsigned long checksum, const uint8_t *buf, unsigned int len)
 
unsigned long ff_crcEDB88320_update (unsigned long checksum, const uint8_t *buf, unsigned int len)
 
unsigned long ff_crcA001_update (unsigned long checksum, const uint8_t *buf, unsigned int len)
 
unsigned long ffio_get_checksum (AVIOContext *s)
 
void ffio_init_checksum (AVIOContext *s, unsigned long(*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum)
 
int avio_r8 (AVIOContext *s)
 
int avio_read (AVIOContext *s, unsigned char *buf, int size)
 Read size bytes from AVIOContext into buf. More...
 
int ffio_read_size (AVIOContext *s, unsigned char *buf, int size)
 Read size bytes from AVIOContext into buf. More...
 
int ffio_read_indirect (AVIOContext *s, unsigned char *buf, int size, const unsigned char **data)
 Read size bytes from AVIOContext, returning a pointer. More...
 
int avio_read_partial (AVIOContext *s, unsigned char *buf, int size)
 Read size bytes from AVIOContext into buf. More...
 
unsigned int avio_rl16 (AVIOContext *s)
 
unsigned int avio_rl24 (AVIOContext *s)
 
unsigned int avio_rl32 (AVIOContext *s)
 
uint64_t avio_rl64 (AVIOContext *s)
 
unsigned int avio_rb16 (AVIOContext *s)
 
unsigned int avio_rb24 (AVIOContext *s)
 
unsigned int avio_rb32 (AVIOContext *s)
 
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...
 
static int64_t read_string_to_bprint (AVIOContext *s, AVBPrint *bp, FFBPrintReadStringMode mode, int64_t max_len)
 
static int64_t read_string_to_bprint_overwrite (AVIOContext *s, AVBPrint *bp, FFBPrintReadStringMode mode, int64_t max_len)
 
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...
 
int64_t ff_read_string_to_bprint_overwrite (AVIOContext *s, AVBPrint *bp, int64_t max_len)
 Read a whole null-terminated string of text from AVIOContext to an AVBPrint buffer overwriting its contents. More...
 
int avio_get_str (AVIOContext *s, int maxlen, char *buf, int buflen)
 Read a string from pb into buf. More...
 
uint64_t avio_rb64 (AVIOContext *s)
 
uint64_t ffio_read_varlen (AVIOContext *bc)
 
int ffio_fdopen (AVIOContext **s, URLContext *h)
 Create and initialize a AVIOContext for accessing the resource referenced by the URLContext h. More...
 
URLContextffio_geturlcontext (AVIOContext *s)
 Return the URLContext associated with the AVIOContext. More...
 
int ffio_copy_url_options (AVIOContext *pb, AVDictionary **avio_opts)
 Read url related dictionary options from the AVIOContext and write to the given dictionary. More...
 
static void update_checksum (AVIOContext *s)
 
int ffio_ensure_seekback (AVIOContext *s, int64_t buf_size)
 Ensures that the requested seekback buffer size will be available. More...
 
int ffio_limit (AVIOContext *s, int size)
 
int ffio_realloc_buf (AVIOContext *s, int buf_size)
 Reallocate a given buffer for AVIOContext. More...
 
int ffio_rewind_with_probe_data (AVIOContext *s, unsigned char **bufp, int buf_size)
 Rewind the AVIOContext using the specified buffer containing the first buf_size bytes of the file. More...
 
int avio_open (AVIOContext **s, const char *filename, int flags)
 Create and initialize a AVIOContext for accessing the resource indicated by url. More...
 
int ffio_open_whitelist (AVIOContext **s, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char *blacklist)
 
int avio_open2 (AVIOContext **s, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
 Create and initialize a AVIOContext for accessing the resource indicated by url. More...
 
int avio_close (AVIOContext *s)
 Close the resource accessed by the AVIOContext s and free it. More...
 
int avio_closep (AVIOContext **s)
 Close the resource accessed by the AVIOContext *s, free it and set the pointer pointing to it to NULL. More...
 
int avio_vprintf (AVIOContext *s, const char *fmt, va_list ap)
 Writes a formatted string to the context taking a va_list. More...
 
int avio_printf (AVIOContext *s, const char *fmt,...)
 
void avio_print_string_array (AVIOContext *s, const char *strings[])
 Write a NULL terminated array of strings to the context. More...
 
int avio_pause (AVIOContext *s, int pause)
 Pause and resume playing - only meaningful if using a network streaming protocol (e.g. More...
 
int64_t avio_seek_time (AVIOContext *s, int stream_index, int64_t timestamp, int flags)
 Seek to a given timestamp relative to some component stream. More...
 
int avio_read_to_bprint (AVIOContext *h, AVBPrint *pb, size_t max_size)
 Read contents of h into print buffer, up to max_size bytes, or up to EOF. More...
 
int avio_accept (AVIOContext *s, AVIOContext **c)
 Accept and allocate a client context on a server context. More...
 
int avio_handshake (AVIOContext *c)
 Perform one step of the protocol handshake to accept a new client. More...
 
static int dyn_buf_write (void *opaque, uint8_t *buf, int buf_size)
 
static int dyn_packet_buf_write (void *opaque, uint8_t *buf, int buf_size)
 
static int64_t dyn_buf_seek (void *opaque, int64_t offset, int whence)
 
static int url_open_dyn_buf_internal (AVIOContext **s, int max_packet_size)
 
int avio_open_dyn_buf (AVIOContext **s)
 Open a write only memory stream. More...
 
int ffio_open_dyn_packet_buf (AVIOContext **s, int max_packet_size)
 Open a write only packetized memory stream with a maximum packet size of 'max_packet_size'. More...
 
int avio_get_dyn_buf (AVIOContext *s, uint8_t **pbuffer)
 Return the written size and a pointer to the buffer. More...
 
void ffio_reset_dyn_buf (AVIOContext *s)
 Reset a dynamic buffer. More...
 
int avio_close_dyn_buf (AVIOContext *s, uint8_t **pbuffer)
 Return the written size and a pointer to the buffer. More...
 
void ffio_free_dyn_buf (AVIOContext **s)
 Free a dynamic buffer. More...
 
static int null_buf_write (void *opaque, uint8_t *buf, int buf_size)
 
int ffio_open_null_buf (AVIOContext **s)
 Open a write-only fake memory stream. More...
 
int ffio_close_null_buf (AVIOContext *s)
 Close a null buffer. More...
 

Variables

static const AVOption ff_avio_options []
 
const AVClass ff_avio_class
 

Macro Definition Documentation

◆ IO_BUFFER_SIZE

#define IO_BUFFER_SIZE   32768

Definition at line 37 of file aviobuf.c.

◆ SHORT_SEEK_THRESHOLD

#define SHORT_SEEK_THRESHOLD   32768

Do seeks within this distance ahead of the current buffer by skipping data instead of calling the protocol seek function, for seekable protocols.

Definition at line 44 of file aviobuf.c.

◆ OFFSET

#define OFFSET (   x)    offsetof(AVIOContext,x)

Definition at line 59 of file aviobuf.c.

◆ E

Definition at line 60 of file aviobuf.c.

◆ D

Definition at line 61 of file aviobuf.c.

◆ PUT_STR16

#define PUT_STR16 (   type,
  big_endian 
)
Value:
int avio_put_str16 ## type(AVIOContext *s, const char *str) \
{ \
return put_str16(s, str, big_endian); \
}

Definition at line 435 of file aviobuf.c.

◆ GET_STR16

#define GET_STR16 (   type,
  read 
)
Value:
int avio_get_str16 ##type(AVIOContext *pb, int maxlen, char *buf, int buflen)\
{\
char* q = buf;\
int ret = 0;\
if (buflen <= 0) \
return AVERROR(EINVAL); \
while (ret + 1 < maxlen) {\
uint8_t tmp;\
uint32_t ch;\
GET_UTF16(ch, (ret += 2) <= maxlen ? read(pb) : 0, break;)\
if (!ch)\
break;\
PUT_UTF8(ch, tmp, if (q - buf < buflen - 1) *q++ = tmp;)\
}\
*q = 0;\
return ret;\
}\

Definition at line 905 of file aviobuf.c.

Enumeration Type Documentation

◆ FFBPrintReadStringMode

Enumerator
FFBPrintReadString 
FFBPrintReadLine 

Definition at line 815 of file aviobuf.c.

Function Documentation

◆ ff_avio_child_next()

static void* ff_avio_child_next ( void *  obj,
void *  prev 
)
static

Definition at line 46 of file aviobuf.c.

◆ child_class_iterate()

static const AVClass* child_class_iterate ( void **  iter)
static

Definition at line 52 of file aviobuf.c.

◆ fill_buffer()

static void fill_buffer ( AVIOContext s)
static

Definition at line 532 of file aviobuf.c.

Referenced by avio_feof(), avio_r8(), avio_read(), avio_read_partial(), and avio_seek().

◆ url_resetbuf()

static int url_resetbuf ( AVIOContext s,
int  flags 
)
static

Definition at line 1158 of file aviobuf.c.

Referenced by ffio_init_context(), and set_buf_size().

◆ set_buf_size()

static int set_buf_size ( AVIOContext s,
int  buf_size 
)
static
Warning
must be called before any I/O

Definition at line 1111 of file aviobuf.c.

Referenced by ffio_realloc_buf(), and fill_buffer().

◆ ffio_init_context()

void ffio_init_context ( FFIOContext ctx,
unsigned char *  buffer,
int  buffer_size,
int  write_flag,
void *  opaque,
int(*)(void *opaque, uint8_t *buf, int buf_size)  read_packet,
int(*)(void *opaque, uint8_t *buf, int buf_size)  write_packet,
int64_t(*)(void *opaque, int64_t offset, int whence)  seek 
)

◆ avio_alloc_context()

AVIOContext* avio_alloc_context ( unsigned char *  buffer,
int  buffer_size,
int  write_flag,
void *  opaque,
int(*)(void *opaque, uint8_t *buf, int buf_size)  read_packet,
int(*)(void *opaque, uint8_t *buf, int buf_size)  write_packet,
int64_t(*)(void *opaque, int64_t offset, int whence)  seek 
)

Allocate and initialize an AVIOContext for buffered I/O.

It must be later freed with avio_context_free().

Parameters
bufferMemory block for input/output operations via AVIOContext. The buffer must be allocated with av_malloc() and friends. It may be freed and replaced with a new buffer by libavformat. AVIOContext.buffer holds the buffer currently in use, which must be later freed with av_free().
buffer_sizeThe buffer size is very important for performance. For protocols with fixed blocksize it should be set to this blocksize. For others a typical size is a cache page, e.g. 4kb.
write_flagSet to 1 if the buffer should be writable, 0 otherwise.
opaqueAn opaque pointer to user-specific data.
read_packetA function for refilling the buffer, may be NULL. For stream protocols, must never return 0 but rather a proper AVERROR code.
write_packetA function for writing the buffer contents, may be NULL. The function may not change the input buffers content.
seekA function for seeking to specified byte position, may be NULL.
Returns
Allocated AVIOContext or NULL on failure.

Definition at line 130 of file aviobuf.c.

Referenced by ffio_fdopen(), hds_write_header(), init_fps(), ism_write_header(), LLVMFuzzerTestOneInput(), load_sb_block(), main(), open_null_ctx(), rdt_parse_packet(), read_gab2_sub(), swf_read_header(), and wtvfile_open_sector().

◆ avio_context_free()

void avio_context_free ( AVIOContext **  s)

Free the supplied IO context and everything associated with it.

Parameters
sDouble pointer to the IO context. This function will write NULL into s.

Definition at line 147 of file aviobuf.c.

Referenced by avio_close(), avio_close_dyn_buf(), close_null_ctxp(), ffio_close_null_buf(), ffio_free_dyn_buf(), finish(), hds_free(), ism_free(), LLVMFuzzerTestOneInput(), main(), rdt_parse_packet(), read_gab2_sub(), and wtvfile_close().

◆ writeout()

static void writeout ( AVIOContext s,
const uint8_t *  data,
int  len 
)
static

Definition at line 152 of file aviobuf.c.

Referenced by avio_write(), and flush_buffer().

◆ flush_buffer()

static void flush_buffer ( AVIOContext s)
static

Definition at line 184 of file aviobuf.c.

Referenced by avio_flush(), avio_seek(), avio_w8(), avio_write(), and ffio_fill().

◆ avio_w8()

void avio_w8 ( AVIOContext s,
int  b 
)

Definition at line 200 of file aviobuf.c.

Referenced by aiff_write_trailer(), amv_end_tag(), amv_write_trailer(), asf_write_header1(), avi_write_ix(), avi_write_packet(), avi_write_packet_internal(), avio_put_str(), avio_wb16(), avio_wb24(), avio_wb32(), avio_wl16(), avio_wl24(), avio_wl32(), caf_write_header(), decode_str(), ebml_writer_elem_write(), ebml_writer_write_block(), enc_stats_write(), ff_end_tag(), ff_id3v2_start(), ff_id3v2_write_apic(), ff_isom_write_avcc(), ff_isom_write_vpcc(), ff_mov_cenc_avc_parse_nal_units(), ff_mov_write_packet(), ff_put_bmp_header(), ff_put_wav_header(), ff_riff_write_info_tag(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_rtcp_feedback(), ff_vorbiscomment_write(), flac_write_block_comment(), flac_write_block_padding(), flac_write_picture(), flush(), flush_packet(), flv_write_codec_header(), flv_write_header(), flv_write_packet(), flv_write_trailer(), gif_write_packet(), gif_write_trailer(), gxf_write_dv_auxiliary(), gxf_write_map_packet(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_mpeg_auxiliary(), gxf_write_packet_header(), gxf_write_timecode_auxiliary(), gxf_write_track_description(), gxf_write_umf_packet(), h261_handle_packet(), h263_handle_packet(), hvcc_write(), ico_write_trailer(), id3v2_put_priv(), id3v2_put_size(), id3v2_put_ttag(), klv_encode_ber4_length(), klv_encode_ber9_length(), klv_encode_ber_length(), lrc_write_header(), lrc_write_packet(), microdvd_write_header(), microdvd_write_packet(), mov_cenc_write_saio_tag(), mov_cenc_write_saiz_tag(), mov_cenc_write_schi_tag(), mov_write_3gp_udta_tag(), mov_write_amr_tag(), mov_write_ccst_tag(), mov_write_chan_tag(), mov_write_chpl_tag(), mov_write_colr_tag(), mov_write_ctts_tag(), mov_write_d263_tag(), mov_write_dfla_tag(), mov_write_dops_tag(), mov_write_edts_tag(), mov_write_esds_tag(), mov_write_hdlr_tag(), mov_write_iinf_tag(), mov_write_iloc_tag(), mov_write_int8_metadata(), mov_write_iods_tag(), mov_write_ipma_tag(), mov_write_itunes_hdlr_tag(), mov_write_loci_tag(), mov_write_mdhd_tag(), mov_write_mdta_hdlr_tag(), mov_write_mvhd_tag(), mov_write_pixi_tag(), mov_write_prft_tag(), mov_write_sdtp_tag(), mov_write_sidx_tag(), mov_write_st3d_tag(), mov_write_subtitle_tag(), mov_write_tcmi_tag(), mov_write_tfdt_tag(), mov_write_tfhd_tag(), mov_write_tfra_tag(), mov_write_tfrf_tag(), mov_write_tfxd_tag(), mov_write_tkhd_tag(), mov_write_tmcd_tag(), mov_write_track_kind(), mov_write_trun_tag(), mov_write_video_tag(), mov_write_vpcc_tag(), mp3_write_xing(), mxf_write_avc_subdesc(), mxf_write_cdci_common(), mxf_write_d10_audio_packet(), mxf_write_generic_sound_common(), mxf_write_index_table_segment(), mxf_write_mpegvideo_desc(), mxf_write_system_item(), mxf_write_timecode_component(), mxf_write_umid(), nut_write_header(), nut_write_packet(), ogg_write_vorbiscomment(), oma_write_header(), output_immediate(), output_match(), print_csv_escaped_str(), put_amf_bool(), put_amf_byte(), put_amf_double(), put_amf_dword_array(), put_descr(), put_ebml_id(), put_ebml_num(), put_ebml_size_unknown(), put_ebml_uint(), put_eos_tag(), put_id3v2_tags(), put_meta(), put_padding_packet(), put_payload_header(), put_payload_parsing_info(), put_str(), put_str8(), put_timestamp(), put_v(), put_xiph_codecpriv(), put_xiph_size(), rm_write_audio(), rm_write_video(), rtcp_send_sr(), rv10_write_header(), scc_write_packet(), smjpeg_write_header(), swf_write_header(), swf_write_video(), ttml_write_packet(), vc1test_write_header(), voc_write_packet(), voc_write_trailer(), webm_reformat_vtt(), write_abst(), write_ctoc(), write_escape_str(), write_header(), write_metadata(), write_odml_master(), write_packet_header(), write_streamheader(), write_table_entries_attrib(), write_tags(), write_trailer(), writer_w8_avio(), and wsaud_write_header().

◆ ffio_fill()

void ffio_fill ( AVIOContext s,
int  b,
int64_t  count 
)

◆ avio_write()

void avio_write ( AVIOContext s,
const unsigned char *  buf,
int  size 
)

Definition at line 222 of file aviobuf.c.

Referenced by a64_write_header(), ac3_handle_packet(), adts_write_packet(), aiff_write_header(), aiff_write_packet(), amv_write_alist(), amv_write_header(), amv_write_packet_internal(), apng_write_chunk(), append_single_file(), asf_write_header1(), asf_write_markers(), asfrtp_parse_packet(), ast_write_packet(), av1_filter_obus(), avc_parse_nal_units(), avi_write_packet_internal(), avif_write_trailer(), avio_print_string_array(), avio_put_str(), avio_vprintf(), caf_write_header(), caf_write_packet(), caf_write_trailer(), chunk_end(), codec2_write_header(), copy_moof(), copy_tag(), dash_write_packet(), daud_write_packet(), decode_packet(), do_encrypt(), dump_attachment(), dv_handle_packet(), dv_write_packet(), ebml_writer_elem_write(), ebml_writer_write_block(), enc_stats_write(), end_ebml_master_crc32(), end_ebml_master_crc32_tentatively(), ff_ape_write_tag(), ff_flac_write_header(), ff_format_shift_data(), ff_hevc_annexb2mp4(), ff_id3v2_write_apic(), ff_isom_write_av1c(), ff_isom_write_avcc(), ff_isom_write_hvcc(), ff_mov_cenc_avc_write_nal_units(), ff_mov_generate_squashed_ttml_packet(), ff_mov_write_packet(), ff_nal_units_write_list(), ff_put_bmp_header(), ff_put_guid(), ff_put_wav_header(), ff_raw_write_packet(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_vorbiscomment_write(), fifo_avio_wrapper(), film_write_packet(), fits_write_packet(), flac_write_audio_packet(), flac_write_picture(), flac_write_trailer(), flush(), flush_dynbuf(), flush_packet(), flv_write_codec_header(), flv_write_header(), flv_write_packet(), framecrc_write_packet(), get_video_private_data(), gif_write_packet(), gxf_write_material_data_section(), gxf_write_mpeg_auxiliary(), gxf_write_packet(), gxf_write_track_description(), gxf_write_umf_media_description(), h261_handle_packet(), h263_handle_packet(), hds_write(), hls_init_file_resend(), hls_write_packet(), hls_write_trailer(), hvcc_write(), ico_write_packet(), id3v2_put_priv(), id3v2_put_ttag(), ilbc_write_header(), init_file(), ivf_write_header(), ivf_write_packet(), jacosub_write_header(), jpeg_parse_packet(), latm_parse_packet(), latm_write_packet(), lrc_write_packet(), main(), microdvd_write_header(), microdvd_write_packet(), mkv_assemble_codecprivate(), mkv_assemble_native_codecprivate(), mkv_put_codecprivate(), mov_cenc_write_encrypted(), mov_cenc_write_saiz_tag(), mov_cenc_write_schi_tag(), mov_cenc_write_senc_tag(), mov_flush_fragment(), mov_flush_fragment_interleaving(), mov_write_3gp_udta_tag(), mov_write_ac3_tag(), mov_write_aux_tag(), mov_write_chpl_tag(), mov_write_colr_tag(), mov_write_covr(), mov_write_dfla_tag(), mov_write_dops_tag(), mov_write_dvc1_tag(), mov_write_dvcc_dvvc_tag(), mov_write_eac3_tag(), mov_write_esds_tag(), mov_write_extradata_tag(), mov_write_glbl_tag(), mov_write_hdlr_tag(), mov_write_iinf_tag(), mov_write_isml_manifest(), mov_write_loci_tag(), mov_write_mdta_keys_tag(), mov_write_mfra_tag(), mov_write_raw_metadata_tag(), mov_write_source_reference_tag(), mov_write_string_data_tag(), mov_write_subtitle_tag(), mov_write_tcmi_tag(), mov_write_tfrf_tag(), mov_write_tfxd_tag(), mov_write_tmcd_tag(), mov_write_track_kind(), mov_write_track_metadata(), mov_write_track_udta_tag(), mov_write_udta_sdp(), mov_write_udta_tag(), mov_write_video_tag(), mp3_update_xing(), mp3_write_trailer(), mp3_write_xing(), mpa_robust_parse_packet(), mpjpeg_write_packet(), mxf_write_avc_subdesc(), mxf_write_cdci_common(), mxf_write_common_fields(), mxf_write_essence_container_refs(), mxf_write_generic_desc(), mxf_write_identification(), mxf_write_index_table_segment(), mxf_write_klv_fill(), mxf_write_metadata_key(), mxf_write_multi_descriptor(), mxf_write_opatom_body_partition(), mxf_write_opatom_packet(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_random_index_pack(), mxf_write_system_item(), mxf_write_tagged_value(), mxf_write_track(), mxf_write_umid(), mxf_write_uuid(), nut_write_header(), nut_write_packet(), ogg_write_page(), output_immediate(), print_file(), print_report(), process_client(), put_amf_string(), put_ebml_binary(), put_frame(), put_meta(), put_packet(), put_str(), put_str16(), put_swf_matrix(), put_swf_rect(), put_videoinfoheader2(), put_xiph_codecpriv(), reflush_dynbuf(), rm_write_audio(), rm_write_video(), roq_write_header(), rtcp_send_sr(), rv10_write_header(), smjpeg_write_header(), smjpeg_write_packet(), sox_write_header(), spdif_write_packet(), srt_write_packet(), sup_write_packet(), svq3_parse_packet(), swf_write_header(), swf_write_video(), tta_queue_flush(), tta_write_header(), tta_write_trailer(), ttml_write_packet(), vc1test_write_header(), vc1test_write_packet(), vc2hq_handle_frame_fragment(), voc_write_header(), voc_write_packet(), vp8_handle_packet(), vp9_handle_packet(), webm_reformat_vtt(), webp_write_packet(), webvtt_write_packet(), write_and_close(), write_chapter(), write_ctoc(), write_frame(), write_globalinfo(), write_header(), write_hint_packets(), write_image_header(), write_keyword_value(), write_mainheader(), write_packet(), write_packet_pipe(), write_root_table(), write_sm_data(), write_stream_codec_info(), write_streamheader(), write_streaminfo(), write_table0_header_legacy_attrib(), write_table_entries_attrib(), write_trailer(), writer_put_str_avio(), wsaud_write_packet(), wv_write_packet(), xiph_handle_packet(), and yuv4_write_packet().

◆ avio_flush()

void avio_flush ( AVIOContext s)

Force flushing of buffered data.

For write streams, force the buffered data to be immediately written to the output, without to wait to fill the internal buffer.

For read streams, discard all currently buffered data, and advance the reported file position to that of the underlying stream. This does not read new data, and does not perform any seeks.

Definition at line 244 of file aviobuf.c.

Referenced by av_write_trailer(), avio_close(), avio_close_dyn_buf(), avio_get_dyn_buf(), avio_write(), avio_write_marker(), close_file(), copy_moof(), dash_init(), dash_write_packet(), dashenc_io_close(), dump_attachment(), enc_stats_write(), ff_format_shift_data(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_rtcp_feedback(), ffio_close_null_buf(), flush_dynbuf(), flush_if_needed(), hds_flush(), hds_write_header(), hls_mux_init(), hls_write_packet(), hlsenc_io_close(), ism_flush(), ism_write_header(), main(), mov_write_header(), print_report(), process_client(), rtcp_send_sr(), segment_end(), write_and_close(), write_fragment(), write_manifest(), and writer_close().

◆ avio_seek()

int64_t avio_seek ( AVIOContext s,
int64_t  offset,
int  whence 
)

fseek() equivalent for AVIOContext.

Returns
new position or AVERROR.

Definition at line 252 of file aviobuf.c.

Referenced by aa_read_header(), aa_read_seek(), aax_read_header(), aax_read_packet(), adts_aac_read_header(), adts_aac_resync(), adx_read_header(), aiff_read_header(), aiff_write_trailer(), aix_read_header(), align_position(), amv_write_trailer(), ape_read_header(), ape_read_packet(), ape_read_seek(), apng_read_header(), apng_read_packet(), apng_write_trailer(), argo_brp_read_header(), asf_build_simple_index(), asf_get_packet(), asf_read_frame_header(), asf_read_header(), asf_read_packet(), asf_read_payload(), asf_read_pts(), asf_read_seek(), asf_read_subpayload(), asf_read_timestamp(), asf_write_header1(), asf_write_trailer(), ast_write_trailer(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_read_seek(), avi_write_counters(), avi_write_packet(), avi_write_trailer(), avif_write_trailer(), avio_flush(), avio_skip(), avio_tell(), bfi_read_header(), bonk_read_header(), caf_write_trailer(), check(), check_tag(), cine_read_header(), cine_read_packet(), close_file(), dat_read_header(), dhav_read_header(), dhav_read_seek(), do_encrypt(), dsf_read_header(), dss_read_header(), dss_read_metadata_date(), dss_read_metadata_string(), dss_read_seek(), dtshd_read_header(), dxa_read_header(), dxa_read_packet(), ea_read_packet(), efi_read(), end_ebml_master(), end_header(), estimate_timings_from_pts(), ff_ape_parse_tag(), ff_dnn_load_model_native(), ff_end_tag(), ff_format_shift_data(), ff_get_qtpalette(), ff_id3v1_read(), ff_id3v2_finish(), ff_img_read_header(), ff_img_read_packet(), ff_pcm_read_seek(), ff_read_riff_info(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_seek_frame_binary(), film_read_packet(), film_read_seek(), find_and_decode_index(), find_any_startcode(), find_index_range(), find_sidx(), finish_chunk_noindex(), flac_read_header(), flac_read_timestamp(), flac_seek(), flac_write_trailer(), flv_data_packet(), flv_read_header(), flv_read_packet(), flv_write_codec_header(), flv_write_packet(), flv_write_trailer(), fsb_read_header(), genh_read_header(), get_attachment(), get_duration(), get_tag(), gif_read_header(), gif_read_packet(), guess_ni_flag(), gxf_read_timestamp(), gxf_resync_media(), gxf_seek(), gxf_write_trailer(), gxf_write_umf_media_description(), hca_read_header(), hnm_read_packet(), ico_write_trailer(), id3v2_parse(), id3v2_read_internal(), idcin_read_seek(), iff_read_header(), ifv_read_header(), ifv_read_packet(), ipmovie_read_header(), ivf_write_trailer(), ivr_read_header(), load_ipmovie_packet(), lvf_read_header(), main(), mkv_check_new_extra_data(), mkv_update_codecprivate(), mkv_write_seekhead(), mkv_write_trailer(), mlp_read_header(), mods_read_header(), moflex_read_header(), moflex_read_packet(), moflex_read_sync(), mov_parse_auxiliary_info(), mov_parse_stsd_video(), mov_read_chapters(), mov_read_custom(), mov_read_default(), mov_read_dref(), mov_read_dvc1(), mov_read_glbl(), mov_read_header(), mov_read_meta(), mov_read_mfra(), mov_read_packet(), mov_read_rtmd_track(), mov_read_sidx(), mov_read_timecode_track(), mov_read_udta_string(), mov_switch_root(), mov_write_mdta_keys_tag(), mov_write_sidx_tag(), mov_write_stsc_tag(), mov_write_stss_tag(), mov_write_tfrf_tag(), mov_write_tfrf_tags(), mov_write_trailer(), mp3_parse_vbr_tags(), mp3_parse_vbri_tag(), mp3_read_header(), mp3_sync(), mp3_update_xing(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_seek(), mpc_read_header(), mpc_read_packet(), mpegps_read_dts(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_dts(), mpegts_get_pcr(), mpegts_raw_read_packet(), mpegts_resync(), mpjpeg_read_header(), mpjpeg_read_packet(), mpl2_read_header(), mtaf_read_header(), mtv_read_header(), musx_read_header(), mv_read_packet(), mxf_parse_handle_essence(), mxf_parse_klv(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_random_index_pack(), mxf_read_seek(), mxf_seek_to_previous_partition(), mxf_update_klv_size(), mxf_write_footer(), mxf_write_partition(), ni_prepare_read(), nsv_parse_NSVf_header(), nsv_read_seek(), nut_read_header(), nuv_read_dts(), ogg_get_length(), ogg_read_page(), ogg_read_timestamp(), ogg_restore(), oma_read_seek(), open_input(), parse_fragment(), parse_keyframes_index(), parse_media_type(), parse_mp4_descr(), pp_bnk_read_packet(), process_ea_header(), put_id3v2_tags(), put_swf_end_tag(), pva_read_timestamp(), qt_rtp_parse_packet(), r3d_read_header(), r3d_seek(), rdt_load_mdpr(), read_apic(), read_dst_frame(), read_frame(), read_header(), read_id3(), read_mfra(), read_moof_duration(), read_odml_index(), read_packet(), read_pakt_chunk(), read_seek(), read_tfra(), recover(), resync(), rka_read_header(), rka_read_seek(), rl2_read_packet(), rm_read_dts(), rm_read_header(), rm_read_index(), rm_write_trailer(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rso_write_trailer(), rv10_write_header(), scd_read_header(), scd_read_packet(), scd_read_table(), scd_read_track(), sdns_read_header(), sdr2_read_header(), seek_back(), seek_by_sector(), seek_data(), seek_frame_byte(), seek_frame_generic(), seq_fill_buffer(), seq_init_frame_buffers(), seq_parse_frame_data(), seq_read_packet(), set_spdif(), sga_read_header(), sga_read_packet(), shift_data(), skip_reserved(), skip_tag(), smacker_read_packet(), smacker_read_seek(), smjpeg_write_trailer(), sox_write_trailer(), str_read_header(), subviewer_read_header(), swf_write_trailer(), tak_read_header(), thp_read_header(), thp_read_packet(), tmv_read_seek(), track_header(), tta_read_header(), tta_read_seek(), ty_read_header(), update_odml_entry(), update_size(), updatePacketSize(), updateSize(), vag_read_header(), vc1test_write_trailer(), vc2hq_handle_frame_fragment(), viv_read_header(), viv_read_seek(), vmd_read_header(), vmd_read_packet(), voc_read_seek(), vpk_read_seek(), vqf_read_seek(), wady_read_header(), wc3_read_header(), wc3_read_packet(), webp_write_trailer(), write_fragments(), write_header(), write_hint_packets(), write_metadata(), write_root_table(), write_stream_codec_info(), write_trailer(), wsaud_write_trailer(), wsd_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_block_header(), wv_read_header(), wv_write_trailer(), xmv_fetch_audio_packet(), xmv_fetch_new_packet(), xmv_fetch_video_packet(), yop_read_header(), yop_read_seek(), and yuv4_read_seek().

◆ avio_skip()

int64_t avio_skip ( AVIOContext s,
int64_t  offset 
)

Skip given number of bytes forward.

Returns
new position or AVERROR.

Definition at line 339 of file aviobuf.c.

Referenced by aa_read_header(), aa_read_packet(), aal_read_packet(), aax_read_header(), ace_read_header(), ads_read_header(), aea_read_header(), afc_read_header(), aiff_read_header(), aix_read_header(), aix_read_packet(), amf_get_string(), amf_parse_object(), amf_skip_tag(), apac_read_header(), ape_read_header(), apng_read_packet(), argo_brp_read_header(), asf_build_simple_index(), asf_parse_packet(), asf_read_content_desc(), asf_read_data(), asf_read_ext_content_desc(), asf_read_ext_stream_properties(), asf_read_frame_header(), asf_read_header(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), asf_read_metadata_obj(), asf_read_multiple_payload(), asf_read_packet(), asf_read_packet_header(), asf_read_properties(), asf_read_replicated_data(), asf_read_simple_index(), asf_read_single_payload(), asf_read_stream_properties(), asf_read_subpayload(), asf_read_unknown(), asfrtp_parse_packet(), ast_read_header(), ast_read_packet(), ast_write_trailer(), avformat_open_input(), avi_read_header(), avi_read_nikon(), avi_sync(), avi_write_trailer(), avr_read_header(), avs_read_header(), avs_read_packet(), bfi_read_header(), binka_read_header(), binka_read_packet(), bonk_read_header(), cdata_read_header(), cdxl_read_packet(), check_file_header(), cine_read_header(), cine_read_packet(), dat_read_packet(), dcstr_read_header(), decode_fctl_chunk(), decode_frame(), derf_read_header(), dfa_read_header(), dfa_read_packet(), dhav_read_header(), dhav_read_packet(), dsf_read_header(), dsf_read_packet(), dss_read_seek(), dss_skip_audio_header(), dtshd_read_header(), dxa_read_header(), ea_read_packet(), epaf_read_header(), ff_get_line(), ff_get_qtpalette(), ff_get_wav_header(), ff_img_read_packet(), ff_mov_read_chan(), ff_mov_read_stsd_entries(), ff_mp4_parse_es_descr(), ff_read_riff_info(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_spdif_read_packet(), ff_voc_get_packet(), finished_reading_packet(), fits_read_packet(), flac_read_header(), flv_read_header(), flv_read_packet(), flv_set_video_codec(), flv_write_codec_header(), fourxm_read_header(), fourxm_read_packet(), frm_read_header(), fsb_read_header(), fwse_read_header(), gdv_read_header(), genh_read_header(), get_aiff_header(), get_codec_data(), get_eia608_packet(), get_meta(), get_packet_header(), get_strl(), get_tag(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_skip_subblocks(), gxf_header(), gxf_material_tags(), gxf_packet(), gxf_read_index(), gxf_track_tags(), hca_read_header(), hcom_read_header(), hnm_read_header(), hnm_read_packet(), ico_write_header(), id3v2_parse(), idcin_read_packet(), iff_read_header(), iff_read_packet(), ifv_read_packet(), ingenient_read_packet(), ipu_read_header(), ircam_read_header(), ivr_read_header(), ivr_read_packet(), laf_read_header(), lmlm4_read_packet(), lvf_read_header(), lvf_read_packet(), lxf_read_header(), mmf_read_header(), mods_read_header(), moflex_read_packet(), moflex_read_sync(), mov_metadata_loci(), mov_parse_stsd_data(), mov_parse_stsd_video(), mov_read_ares(), mov_read_chan(), mov_read_coll(), mov_read_covr(), mov_read_custom(), mov_read_default(), mov_read_dref(), mov_read_keys(), mov_read_moov(), mov_read_mvhd(), mov_read_rtmd_track(), mov_read_sgpd(), mov_read_smdm(), mov_read_st3d(), mov_read_strf(), mov_read_sv3d(), mov_read_uuid(), mov_read_vpcc(), mov_read_wave(), mov_read_wide(), mov_skip_multiple_stsd(), mov_write_header(), mp3_parse_info_tag(), mp3_parse_vbri_tag(), mpc8_handle_chunk(), mpc8_read_header(), mpegps_psm_parse(), mpegps_read_dts(), mpegps_read_packet(), mpegps_read_pes_header(), msf_read_header(), msnwc_tcp_read_packet(), msp_read_header(), mtaf_read_header(), mtv_read_header(), mtv_read_packet(), musx_read_header(), mv_read_header(), mv_read_packet(), mxf_decrypt_triplet(), mxf_get_eia608_packet(), mxf_read_header(), mxf_read_index_entry_array(), mxf_read_packet(), mxf_read_partition_pack(), mxf_read_random_index_pack(), mxf_read_strong_ref_array(), nc_read_packet(), nist_read_header(), nsp_read_header(), nsv_read_chunk(), nut_read_packet(), nuv_header(), nuv_packet(), nuv_read_dts(), ogg_read_page(), parse_chunks(), parse_dsd_diin(), parse_dsd_prop(), parse_ext(), parse_global_var(), parse_header(), parse_media_type(), parse_video_info(), parse_video_var(), parse_videoinfoheader2(), pmp_header(), pmp_packet(), pp_bnk_read_header(), process_audio_header_eacs(), process_ea_header(), process_ipmovie_chunk(), process_video_header_cmv(), process_video_header_mdec(), process_video_header_vp6(), pvf_read_header(), qcp_read_header(), qcp_read_packet(), qt_rtp_parse_packet(), r3d_read_packet(), r3d_read_red1(), r3d_read_reos(), rdt_load_mdpr(), read_chapter(), read_chunk(), read_dst_frame(), read_extradata(), read_gab2_sub(), read_header(), read_index(), read_kuki_chunk(), read_line_to_bprint_escaped(), read_packet(), read_part_of_packet(), read_sm_data(), read_string(), read_string_to_bprint(), read_table(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_header(), rm_read_index(), rm_sync(), roq_read_packet(), rpl_read_packet(), rsd_read_header(), scan_file(), scd_read_header(), sdns_read_header(), sdr2_read_header(), sdr2_read_packet(), sds_read_header(), sds_read_packet(), sdx_read_header(), ser_read_header(), sga_read_header(), sga_read_packet(), siff_parse_soun(), siff_parse_vbv1(), siff_read_header(), simbiosis_imx_read_header(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), smush_read_header(), smush_read_packet(), sol_read_header(), sox_read_header(), svag_read_header(), svs_read_header(), swf_read_header(), swf_read_packet(), tak_read_header(), threedostr_read_header(), threedostr_read_packet(), tmv_read_packet(), tta_read_header(), txd_read_packet(), update_odml_entry(), vag_read_header(), var_read_string(), vc1t_read_header(), vid_read_header(), viv_read_header(), vivo_read_header(), vivo_read_packet(), voc_read_header(), vpk_read_header(), vpk_read_packet(), vqf_read_header(), wady_read_header(), wavarc_read_header(), wc3_read_header(), write_metadata(), wsd_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_block_header(), wv_read_header(), wve_read_header(), xa_read_header(), xmd_read_header(), xmv_read_header(), xvag_read_header(), xwma_read_header(), yop_read_header(), and yop_read_packet().

◆ avio_size()

int64_t avio_size ( AVIOContext s)

◆ avio_feof()

int avio_feof ( AVIOContext s)

Similar to feof() but also returns nonzero on read errors.

Returns
non zero if and only if at end of file or a read error happened when reading.

Definition at line 367 of file aviobuf.c.

Referenced by aa_read_header(), aal_read_packet(), aax_read_packet(), adp_read_packet(), adts_aac_resync(), adx_read_packet(), aix_read_packet(), amf_parse_object(), amf_skip_tag(), ape_read_packet(), apng_read_packet(), aqt_read_header(), asf_build_simple_index(), asf_get_packet(), asf_parse_packet(), asf_read_header(), asf_read_marker(), ast_read_packet(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_read_nikon(), avi_sync(), avio_read(), avio_read_partial(), bfi_read_packet(), binka_read_packet(), bonk_read_header(), cdxl_read_packet(), cin_read_frame_header(), cine_read_header(), cine_read_packet(), dat_read_packet(), daud_packet(), dfa_read_packet(), dtshd_read_header(), dxa_read_header(), dxa_read_packet(), ea_read_packet(), ff_get_line(), ff_imf_parse_cpl(), ff_img_read_packet(), ff_read_riff_info(), ff_spdif_read_packet(), ff_text_eof(), ff_text_peek_r8(), find_any_startcode(), find_next_start_code(), flac_read_header(), flv_read_packet(), fourxm_read_packet(), fsb_read_packet(), gdv_read_packet(), genh_read_packet(), get_bprint_line(), get_chunk(), get_codec_data(), get_line(), get_swf_tag(), get_tag(), gif_read_header(), gif_read_packet(), gxf_packet(), hls_read_packet(), idcin_read_packet(), iff_read_header(), iff_read_packet(), ifv_read_packet(), ipmovie_read_header(), ivr_read_header(), ivr_read_packet(), jacosub_read_header(), laf_read_header(), laf_read_packet(), lrc_read_header(), lvf_read_header(), lvf_read_packet(), lxf_sync(), microdvd_read_header(), mmf_read_packet(), mods_read_packet(), moflex_read_packet(), moflex_read_sync(), mov_metadata_hmmt(), mov_read_default(), mov_read_dref(), mov_read_glbl(), mov_read_iloc(), mov_read_meta(), mov_switch_root(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_packet(), mpegps_read_pes_header(), mpegts_resync(), mpl2_read_header(), mpsub_read_header(), msnwc_tcp_read_header(), mv_read_header(), mxf_read_header(), mxf_read_index_entry_array(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_sync(), mxg_read_packet(), nc_read_packet(), nist_read_header(), nsp_read_header(), nsv_parse_NSVf_header(), nsv_read_chunk(), nsv_resync(), nut_read_packet(), nuv_packet(), nuv_read_dts(), nuv_resync(), ogg_read_page(), parse_assetmap(), parse_chunks(), parse_dsd_diin(), parse_dsd_prop(), parse_keyframes_index(), parse_legacy_attrib(), parse_manifest(), parse_media_type(), parse_playlist(), pjs_read_header(), pmp_header(), pmp_packet(), pop(), process_audio_header_elements(), process_ipmovie_chunk(), qcp_read_packet(), read_chunk(), read_dst_frame(), read_header(), read_index(), read_info_chunk(), read_line(), read_line_to_bprint_escaped(), read_odml_index(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_string_to_bprint(), read_table(), read_tfra(), read_thread(), redspark_read_packet(), resync(), rka_read_header(), rka_read_packet(), rl2_read_header(), rm_read_header(), rm_read_index(), rm_read_packet(), rm_sync(), roq_read_packet(), rpl_read_packet(), rsd_read_header(), rsd_read_packet(), s337m_read_packet(), scan_file(), sdns_read_packet(), sds_read_packet(), sdx_read_header(), sga_read_header(), sga_read_packet(), should_retry(), simbiosis_imx_read_packet(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smush_read_header(), smush_read_packet(), sol_read_packet(), stl_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_read_packet(), svs_read_packet(), tak_read_header(), threedostr_read_header(), threedostr_read_packet(), tmv_read_packet(), track_header(), tta_read_header(), txd_read_packet(), ty_read_packet(), vc1t_read_packet(), vid_read_packet(), viv_read_header(), viv_read_packet(), vivo_get_packet_header(), vivo_read_packet(), vplayer_read_header(), vqf_read_header(), wavarc_read_header(), wc3_read_header(), wc3_read_packet(), wtvfile_read_packet(), wv_read_block_header(), wv_read_packet(), and xwma_read_header().

◆ avio_wl32()

void avio_wl32 ( AVIOContext s,
unsigned int  val 
)

Definition at line 378 of file aviobuf.c.

Referenced by aiff_write_header(), amv_start_tag(), amv_write_header(), amv_write_packet_internal(), asf_write_header1(), asf_write_index(), asf_write_markers(), ast_write_header(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_packet_internal(), avi_write_trailer(), avio_wl64(), caf_write_header(), ff_ape_write_tag(), ff_end_tag(), ff_mov_cenc_write_sinf_tag(), ff_put_bmp_header(), ff_put_wav_header(), ff_riff_write_info_tag(), ff_start_tag(), ff_vorbiscomment_write(), ffio_wfourcc(), finish_chunk_noindex(), flush(), gxf_write_flt_packet(), gxf_write_timecode_auxiliary(), gxf_write_umf_material_description(), gxf_write_umf_media_audio(), gxf_write_umf_media_description(), gxf_write_umf_media_dv(), gxf_write_umf_media_mpeg(), gxf_write_umf_media_timecode(), gxf_write_umf_payload(), ico_write_packet(), ico_write_trailer(), init_file(), ircam_write_header(), ivf_write_header(), ivf_write_packet(), ivf_write_trailer(), mkv_assemble_codecprivate(), mkv_assemble_native_codecprivate(), mov_write_audio_tag(), mov_write_chan_tag(), mov_write_ms_tag(), mov_write_subtitle_tag(), mov_write_tref_tag(), mov_write_video_tag(), mov_write_wave_tag(), mxf_write_d10_audio_packet(), nut_write_packet(), put_chunk(), put_id3v2_tags(), put_meta(), put_packet(), put_payload_header(), put_payload_parsing_info(), put_swf_end_tag(), put_swf_tag(), put_videoinfoheader2(), rv10_write_header(), smjpeg_write_header(), smjpeg_write_packet(), smjpeg_write_trailer(), sox_write_header(), swf_write_header(), swf_write_trailer(), tta_write_header(), tta_write_packet(), tta_write_trailer(), update_odml_entry(), vc1test_write_header(), vc1test_write_packet(), voc_write_packet(), webp_write_trailer(), write_abst(), write_chunk_header(), write_fat(), write_header(), write_index(), write_metadata_header(), write_odml_master(), write_root_table(), write_stream_codec(), write_stream_codec_info(), write_stream_data(), write_streamheader(), write_table0_header_events(), write_table0_header_legacy_attrib(), write_table0_header_time(), write_table_entries_attrib(), write_tag_int32(), write_trailer(), wsaud_write_packet(), wsaud_write_trailer(), and wv_write_trailer().

◆ avio_wb32()

void avio_wb32 ( AVIOContext s,
unsigned int  val 
)

Definition at line 386 of file aviobuf.c.

Referenced by aiff_write_header(), aiff_write_trailer(), apng_write_chunk(), ast_write_header(), ast_write_packet(), ast_write_trailer(), avc_parse_nal_units(), avi_write_packet(), avif_write_trailer(), avio_wb64(), caf_write_header(), caf_write_trailer(), close_file(), copy_tag(), ff_hevc_annexb2mp4(), ff_id3v2_start(), ff_id3v2_write_apic(), ff_mov_cenc_avc_parse_nal_units(), ff_mov_cenc_write_sinf_tag(), ff_mov_write_chan(), ff_mov_write_packet(), ff_nal_units_write_list(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_rtcp_feedback(), film_write_packet(), flac_write_picture(), flush_packet(), flv_write_codec_header(), flv_write_header(), flv_write_packet(), get_video_private_data(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_packet_header(), gxf_write_track_description(), gxf_write_umf_packet(), hvcc_write(), id3v2_put_priv(), id3v2_put_ttag(), init_file(), mkv_assemble_codecprivate(), mov_cenc_write_saio_tag(), mov_cenc_write_saiz_tag(), mov_cenc_write_schi_tag(), mov_cenc_write_senc_tag(), mov_flush_fragment(), mov_preroll_write_stbl_atoms(), mov_write_3gp_udta_tag(), mov_write_ac3_tag(), mov_write_amr_tag(), mov_write_audio_tag(), mov_write_aux_tag(), mov_write_av1c_tag(), mov_write_avcc_tag(), mov_write_avid_tag(), mov_write_btrt_tag(), mov_write_ccst_tag(), mov_write_chan_tag(), mov_write_chpl_tag(), mov_write_clap_tag(), mov_write_clli_tag(), mov_write_colr_tag(), mov_write_covr(), mov_write_ctts_tag(), mov_write_d263_tag(), mov_write_dfla_tag(), mov_write_dinf_tag(), mov_write_dmlp_tag(), mov_write_dops_tag(), mov_write_dpxe_tag(), mov_write_dref_tag(), mov_write_dvc1_tag(), mov_write_dvcc_dvvc_tag(), mov_write_eac3_tag(), mov_write_edts_tag(), mov_write_enda_tag(), mov_write_enda_tag_be(), mov_write_esds_tag(), mov_write_fiel_tag(), mov_write_ftyp_tag(), mov_write_ftyp_tag_internal(), mov_write_gama_tag(), mov_write_glbl_tag(), mov_write_gmhd_tag(), mov_write_gpmd_tag(), mov_write_hdlr_tag(), mov_write_hmhd_tag(), mov_write_hvcc_tag(), mov_write_iinf_tag(), mov_write_iloc_tag(), mov_write_ilst_tag(), mov_write_int8_metadata(), mov_write_iods_tag(), mov_write_ipco_tag(), mov_write_ipma_tag(), mov_write_iprp_tag(), mov_write_iref_tag(), mov_write_isml_manifest(), mov_write_ispe_tag(), mov_write_itunes_hdlr_tag(), mov_write_loci_tag(), mov_write_mdat_tag(), mov_write_mdcv_tag(), mov_write_mdhd_tag(), mov_write_mdia_tag(), mov_write_mdta_hdlr_tag(), mov_write_mdta_ilst_tag(), mov_write_mdta_keys_tag(), mov_write_meta_tag(), mov_write_mfhd_tag(), mov_write_mfra_tag(), mov_write_minf_tag(), mov_write_moof_tag_internal(), mov_write_moov_tag(), mov_write_ms_tag(), mov_write_mvex_tag(), mov_write_mvhd_tag(), mov_write_nmhd_tag(), mov_write_pasp_tag(), mov_write_pitm_tag(), mov_write_pixi_tag(), mov_write_prft_tag(), mov_write_psp_udta_tag(), mov_write_raw_metadata_tag(), mov_write_rtp_tag(), mov_write_sdtp_tag(), mov_write_sidx_tag(), mov_write_smhd_tag(), mov_write_source_reference_tag(), mov_write_st3d_tag(), mov_write_stbl_tag(), mov_write_stco_tag(), mov_write_sthd_tag(), mov_write_string_data_tag(), mov_write_string_tag(), mov_write_stsc_tag(), mov_write_stsd_tag(), mov_write_stss_tag(), mov_write_stsz_tag(), mov_write_stts_tag(), mov_write_subtitle_tag(), mov_write_sv3d_tag(), mov_write_tapt_tag(), mov_write_tcmi_tag(), mov_write_tfdt_tag(), mov_write_tfhd_tag(), mov_write_tfra_tag(), mov_write_tfrf_tag(), mov_write_tfxd_tag(), mov_write_tkhd_tag(), mov_write_tmcd_tag(), mov_write_tmpo_tag(), mov_write_track_kind(), mov_write_track_metadata(), mov_write_track_udta_tag(), mov_write_traf_tag(), mov_write_trailer(), mov_write_trak_tag(), mov_write_tref_tag(), mov_write_trex_tag(), mov_write_trkn_tag(), mov_write_trun_tag(), mov_write_udta_sdp(), mov_write_udta_tag(), mov_write_uuid_tag_ipod(), mov_write_uuid_tag_psp(), mov_write_uuidprof_tag(), mov_write_uuidusmt_tag(), mov_write_video_tag(), mov_write_vmhd_tag(), mov_write_vpcc_tag(), mov_write_wave_tag(), mov_write_wfex_tag(), mp3_write_xing(), mxf_write_cdci_common(), mxf_write_essence_container_data(), mxf_write_generic_desc(), mxf_write_generic_sound_common(), mxf_write_index_table_segment(), mxf_write_mpegvideo_desc(), mxf_write_multi_descriptor(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_random_index_pack(), mxf_write_refs_count(), mxf_write_structural_component(), mxf_write_system_item(), mxf_write_track(), mxf_write_uuid(), mxf_write_wav_common(), oma_write_header(), output_match(), put_amf_dword_array(), put_eos_tag(), put_id3v2_tags(), put_meta(), put_padding_packet(), rm_write_trailer(), rm_write_video(), rtcp_send_sr(), rv10_write_header(), shift_data(), smjpeg_write_header(), smjpeg_write_packet(), smjpeg_write_trailer(), sox_write_header(), sup_write_packet(), swf_write_video(), update_size(), updatePacketSize(), write_abst(), write_chapter(), write_ctoc(), write_hint_packets(), write_matrix(), write_metadata(), write_packet_header(), write_styp(), and write_trailer().

◆ avio_put_str()

int avio_put_str ( AVIOContext s,
const char *  str 
)

Write a NULL-terminated string.

Returns
number of bytes written.

Definition at line 394 of file aviobuf.c.

Referenced by caf_write_header(), ff_ape_write_tag(), ff_id3v2_write_apic(), ff_riff_write_info_tag(), id3v2_encode_string(), mov_write_subtitle_tag(), mov_write_sv3d_tag(), write_chapter(), and write_ctoc().

◆ put_str16()

static int put_str16 ( AVIOContext s,
const char *  str,
const int  be 
)
inlinestatic

Definition at line 405 of file aviobuf.c.

◆ avio_wl64()

void avio_wl64 ( AVIOContext s,
uint64_t  val 
)

◆ avio_wb64()

void avio_wb64 ( AVIOContext s,
uint64_t  val 
)

◆ avio_wl16()

void avio_wl16 ( AVIOContext s,
unsigned int  val 
)

◆ avio_wb16()

void avio_wb16 ( AVIOContext s,
unsigned int  val 
)

Definition at line 464 of file aviobuf.c.

Referenced by aiff_write_header(), ascii_to_wc(), ast_write_header(), ast_write_trailer(), avio_wb24(), caf_write_header(), daud_write_packet(), ebml_writer_write_block(), ff_id3v2_write_apic(), ff_isom_write_avcc(), ff_isom_write_vpcc(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_rtcp_feedback(), film_write_packet(), flush_packet(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_track_description(), gxf_write_track_description_section(), gxf_write_umf_media_description(), hvcc_write(), id3v2_put_priv(), id3v2_put_ttag(), mov_preroll_write_stbl_atoms(), mov_write_3gp_udta_tag(), mov_write_amr_tag(), mov_write_audio_tag(), mov_write_clli_tag(), mov_write_colr_tag(), mov_write_dmlp_tag(), mov_write_dops_tag(), mov_write_enda_tag(), mov_write_enda_tag_be(), mov_write_esds_tag(), mov_write_fiel_tag(), mov_write_gmhd_tag(), mov_write_gpmd_tag(), mov_write_hmhd_tag(), mov_write_iinf_tag(), mov_write_iloc_tag(), mov_write_iods_tag(), mov_write_ipma_tag(), mov_write_iref_tag(), mov_write_loci_tag(), mov_write_mdcv_tag(), mov_write_mdhd_tag(), mov_write_mvhd_tag(), mov_write_pitm_tag(), mov_write_psp_udta_tag(), mov_write_rtp_tag(), mov_write_sidx_tag(), mov_write_smhd_tag(), mov_write_source_reference_tag(), mov_write_string_data_tag(), mov_write_subtitle_tag(), mov_write_tcmi_tag(), mov_write_tkhd_tag(), mov_write_tmcd_tag(), mov_write_tmpo_tag(), mov_write_trkn_tag(), mov_write_uuidprof_tag(), mov_write_uuidusmt_tag(), mov_write_video_tag(), mp3_write_xing(), mxf_write_cdci_common(), mxf_write_local_tag(), mxf_write_mpegvideo_desc(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_system_item(), mxf_write_timecode_component(), mxf_write_uuid(), mxf_write_wav_common(), output_match(), put_amf_string(), put_padding_packet(), put_str(), put_str16(), put_timestamp(), rm_write_video(), rso_write_header(), rso_write_trailer(), rtcp_send_sr(), rv10_write_header(), smjpeg_write_header(), spdif_put_16(), store_version(), sup_write_packet(), updateSize(), write_chapter(), write_ctoc(), write_hint_packets(), write_packet_header(), and write_trailer().

◆ avio_wl24()

void avio_wl24 ( AVIOContext s,
unsigned int  val 
)

Definition at line 470 of file aviobuf.c.

Referenced by flush(), vc1test_write_header(), vc1test_write_trailer(), and voc_write_packet().

◆ avio_wb24()

void avio_wb24 ( AVIOContext s,
unsigned int  val 
)

◆ avio_write_marker()

void avio_write_marker ( AVIOContext s,
int64_t  time,
enum AVIODataMarkerType  type 
)

Mark the written bytestream as a specific type.

Zero-length ranges are omitted from the output.

Parameters
sthe AVIOContext
timethe stream time the current bytestream pos corresponds to (in AV_TIME_BASE units), or AV_NOPTS_VALUE if unknown or not applicable
typethe kind of data written starting at the current pos

Definition at line 482 of file aviobuf.c.

Referenced by av_write_trailer(), avformat_write_header(), flush_if_needed(), flush_packet(), flv_write_packet(), mkv_end_cluster(), mkv_write_packet(), mov_flush_fragment(), mov_write_trailer(), mxf_write_partition(), ogg_write_page(), and put_vcd_padding_sector().

◆ read_packet_wrapper()

static int read_packet_wrapper ( AVIOContext s,
uint8_t *  buf,
int  size 
)
static

Definition at line 519 of file aviobuf.c.

Referenced by avio_read(), avio_read_partial(), and fill_buffer().

◆ ff_crc04C11DB7_update()

unsigned long ff_crc04C11DB7_update ( unsigned long  checksum,
const uint8_t *  buf,
unsigned int  len 
)

Definition at line 586 of file aviobuf.c.

Referenced by get_packetheader(), nut_write_packet(), ogg_read_page(), and put_packet().

◆ ff_crcEDB88320_update()

unsigned long ff_crcEDB88320_update ( unsigned long  checksum,
const uint8_t *  buf,
unsigned int  len 
)

Definition at line 592 of file aviobuf.c.

Referenced by tta_read_header(), and tta_write_header().

◆ ff_crcA001_update()

unsigned long ff_crcA001_update ( unsigned long  checksum,
const uint8_t *  buf,
unsigned int  len 
)

Definition at line 598 of file aviobuf.c.

Referenced by mp3_parse_vbr_tags().

◆ ffio_get_checksum()

unsigned long ffio_get_checksum ( AVIOContext s)

◆ ffio_init_checksum()

void ffio_init_checksum ( AVIOContext s,
unsigned long(*)(unsigned long c, const uint8_t *p, unsigned int len update_checksum,
unsigned long  checksum 
)

◆ avio_r8()

int avio_r8 ( AVIOContext s)

Definition at line 624 of file aviobuf.c.

Referenced by aax_read_header(), adts_aac_resync(), aea_read_header(), aix_read_header(), aix_read_packet(), amf_parse_object(), amf_skip_tag(), ape_read_header(), ape_tag_read_field(), asf_get_packet(), asf_parse_packet(), asf_read_frame_header(), asf_read_header(), asf_read_language_list(), asf_read_packet_header(), asf_read_payload(), asf_read_picture(), asf_read_stream_properties(), asf_read_subpayload(), asfrtp_parse_packet(), avi_read_header(), avi_sync(), avio_get_str(), avio_rb16(), avio_rb24(), avio_rl16(), avio_rl24(), avs_read_packet(), bfi_read_packet(), binka_read_header(), bmv_read_packet(), bonk_read_header(), cdata_read_header(), cin_read_file_header(), cin_read_frame_header(), decode_fctl_chunk(), decode_str(), dss_723_1_read_packet(), dss_read_header(), dtshd_read_header(), dxa_read_header(), ebml_read_num(), efi_read(), ff_get_line(), ff_get_qtpalette(), ff_mp4_parse_es_descr(), ff_mp4_read_dec_config_descr(), ff_mp4_read_descr(), ff_mp4_read_descr_len(), ff_sauce_read(), ff_spdif_read_packet(), ff_text_init_avio(), ff_text_r8(), ff_voc_get_packet(), ffio_read_varlen(), find_any_startcode(), find_next_start_code(), flv_data_packet(), flv_read_header(), flv_read_metabody(), flv_read_packet(), flv_set_video_codec(), frm_read_header(), fsb_read_header(), fsb_read_packet(), g723_1_read_packet(), gdv_read_header(), genh_read_packet(), get_attachment(), get_codec_data(), get_eia608_packet(), get_line(), get_pts(), get_size(), get_str(), get_str8(), get_token(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_skip_subblocks(), guess_ni_flag(), gxf_header(), gxf_material_tags(), gxf_packet(), gxf_resync_media(), gxf_track_tags(), hcom_read_header(), iff_read_header(), ipmovie_read_header(), ivr_read_header(), ivr_read_packet(), klv_decode_ber_length(), laf_read_header(), load_sb_block(), lvf_read_header(), lxf_sync(), mmf_read_header(), moflex_read_packet(), moflex_read_sync(), mov_metadata_gnre(), mov_metadata_int8_bypass_padding(), mov_metadata_int8_no_padding(), mov_parse_stsd_video(), mov_read_chpl(), mov_read_coll(), mov_read_colr(), mov_read_ctts(), mov_read_dfla(), mov_read_dops(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_hdlr(), mov_read_iloc(), mov_read_kind(), mov_read_mac_string(), mov_read_mdhd(), mov_read_mvhd(), mov_read_pcmc(), mov_read_pssh(), mov_read_rtmd_track(), mov_read_SA3D(), mov_read_saio(), mov_read_saiz(), mov_read_SAND(), mov_read_sbgp(), mov_read_sdtp(), mov_read_senc(), mov_read_sgpd(), mov_read_sidx(), mov_read_smdm(), mov_read_st3d(), mov_read_stco(), mov_read_stsc(), mov_read_stsd(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_sv3d(), mov_read_tenc(), mov_read_tfdt(), mov_read_tfhd(), mov_read_tkhd(), mov_read_trex(), mov_read_trun(), mov_read_udta_string(), mov_read_vpcc(), mp3_parse_info_tag(), mpc8_read_header(), mpc_read_header(), mpegps_psm_parse(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_resync(), msnwc_tcp_read_header(), mtaf_read_header(), mtv_read_header(), mxf_get_eia608_packet(), mxf_read_generic_descriptor(), mxf_read_index_entry_array(), mxf_read_pixel_layout(), mxf_read_sequence(), mxf_read_sync(), mxf_read_timecode_component(), nc_read_packet(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_resync(), nut_read_packet(), nuv_header(), nuv_resync(), ogg_read_page(), parse_chunks(), parse_dsd_prop(), parse_ext(), parse_keyframes_index(), parse_MP4IODescrTag(), parse_MP4SLDescrTag(), parse_packet_header(), pmp_packet(), pop(), process_audio_header_eacs(), process_audio_header_elements(), qcp_read_header(), qcp_read_packet(), r3d_read_red1(), r3d_read_reda(), r3d_read_redv(), rb_size(), read_apic(), read_arbitrary(), read_chunk(), read_comment(), read_frame(), read_geobtag(), read_header(), read_kuki_chunk(), read_line(), read_line_to_bprint_escaped(), read_moof_duration(), read_odml_index(), read_part_of_packet(), read_string_to_bprint(), read_tfra(), read_trun_duration(), read_ttag(), read_uint8(), read_uslt(), read_var_byte(), read_xing_toc(), resync(), rm_assemble_video_frame(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_metadata(), rm_sync(), rsd_read_header(), rsd_read_packet(), s337m_read_packet(), sds_read_header(), sds_read_packet(), sdx_read_header(), seq_parse_frame_data(), simbiosis_imx_read_packet(), skip_reserved(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), sol_read_header(), swf_read_header(), swf_read_packet(), tak_read_header(), tmv_read_header(), track_header(), track_index(), vc1t_read_header(), vc1t_read_packet(), vid_read_packet(), viv_read_header(), vivo_get_packet_header(), wavarc_read_header(), wsd_read_header(), wv_read_block_header(), xmd_read_header(), yop_read_header(), yuv4_read_header(), and yuv4_read_packet().

◆ avio_read()

int avio_read ( AVIOContext s,
unsigned char *  buf,
int  size 
)

Read size bytes from AVIOContext into buf.

Returns
number of bytes read or AVERROR

Definition at line 633 of file aviobuf.c.

Referenced by aax_read_packet(), add_metadata(), amf_get_string(), ape_read_header(), ape_read_packet(), ape_tag_read_field(), append_packet_chunked(), append_single_file(), argo_brp_read_header(), argo_brp_read_packet(), asf_parse_packet(), asf_read_multiple_payload(), asf_read_single_payload(), asf_read_stream_properties(), asf_read_value(), av_probe_input_buffer2(), avi_read_header(), avi_read_nikon(), avi_read_tag(), avio_read_to_bprint(), avs_read_packet(), avs_read_video_packet(), binka_read_packet(), bmv_read_packet(), cdxl_read_packet(), check(), check_file_header(), check_tag(), cin_read_packet(), copy_moof(), copy_tag(), decode_frame(), decode_main_header(), dhav_read_header(), dsf_read_packet(), dss_723_1_read_packet(), dss_read_metadata_date(), dss_read_metadata_string(), dss_read_seek(), dss_sp_read_packet(), dtshd_read_header(), dxa_read_packet(), ff_ape_parse_tag(), ff_dnn_load_model_native(), ff_flac_parse_picture(), ff_id3v1_read(), ff_img_read_header(), ff_img_read_packet(), ff_read_riff_info(), ff_sauce_read(), ff_spdif_read_packet(), ffio_read_indirect(), ffio_read_size(), film_read_header(), find_index_range(), fits_read_packet(), flac_read_header(), flv_queue_extradata(), fourxm_read_header(), fourxm_read_packet(), fsb_read_header(), g723_1_read_packet(), genh_read_header(), get_chunk(), get_meta(), get_metadata(), get_packet_header(), get_pts(), get_riff(), get_str(), get_tag(), gif_read_ext(), gif_read_packet(), hca_read_header(), hcom_read_header(), hls_encryption_start(), hls_read_header(), id3v2_parse(), id3v2_read_internal(), idcin_read_packet(), iff_read_header(), ilbc_read_header(), import_pem(), ipmovie_read_header(), is_image(), klv_read_packet(), load_ipmovie_packet(), lxf_read_header(), lxf_read_packet(), lxf_sync(), main(), mlp_read_header(), modplug_read_header(), mov_read_adrm(), mov_read_dfla(), mov_read_dops(), mov_read_free(), mov_read_keys(), mov_read_tenc(), mov_read_wave(), mov_try_read_block(), mp3_parse_info_tag(), mpc8_parse_seektable(), mpc_read_packet(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_pcr(), mpegts_raw_read_packet(), mxf_decrypt_triplet(), mxf_read_cryptographic_context(), mxf_read_essence_container_data(), mxf_read_ffv1_sub_descriptor(), mxf_read_generic_descriptor(), mxf_read_indirect_value(), mxf_read_local_tags(), mxf_read_mca_sub_descriptor(), mxf_read_package(), mxf_read_partition_pack(), mxf_read_primer_pack(), mxf_read_pulldown_component(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_strong_ref_array(), mxf_read_track(), mxg_update_cache(), next_byte(), nsv_parse_NSVf_header(), nuv_header(), nuv_packet(), nuv_read_dts(), of_add_attachments(), ogg_read_page(), oma_read_header(), oma_read_seek(), open_input(), parse_chunks(), parse_fragment(), parse_MP4DecConfigDescrTag(), pp_bnk_read_header(), pp_bnk_read_packet(), process_client(), process_ipmovie_chunk(), qcp_read_header(), r3d_read_red1(), read_apic(), read_binary(), read_chapter(), read_extradata(), read_frame(), read_from_url(), read_geobtag(), read_graph(), read_header(), read_header_gme(), read_header_openmpt(), read_header_vs(), read_kuki_chunk(), read_packet(), read_priv(), read_sb_block(), read_sm_data(), read_string(), read_table(), read_uslt(), read_vblock(), read_whole_file(), readfull(), rm_assemble_video_frame(), rm_read_audio_stream_info(), roq_read_header(), roq_read_packet(), rsd_read_header(), scd_read_header(), scd_read_offsets(), scd_read_table(), scd_read_track(), sdr2_read_packet(), sds_read_packet(), seq_fill_buffer(), seq_read_packet(), set_spdif(), sga_read_packet(), siff_read_packet(), smjpeg_read_header(), sox_read_header(), str_read_header(), str_read_packet(), swf_read_packet(), tak_read_header(), thp_read_header(), track_header(), tta_read_header(), ty_read_header(), vid_read_packet(), viv_read_header(), vivo_read_header(), vmd_read_header(), vmd_read_packet(), vpk_read_packet(), vqf_read_header(), vqf_read_packet(), wavarc_read_header(), wc3_read_header(), wc3_read_packet(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_read_packet(), wv_read_block_header(), wv_read_packet(), xmv_process_packet_header(), and yop_read_packet().

◆ ffio_read_size()

int ffio_read_size ( AVIOContext s,
unsigned char *  buf,
int  size 
)

◆ ffio_read_indirect()

int ffio_read_indirect ( AVIOContext s,
unsigned char *  buf,
int  size,
const unsigned char **  data 
)

Read size bytes from AVIOContext, returning a pointer.

Note that the data pointed at by the returned pointer is only valid until the next call that references the same IO context.

Parameters
sIO context
bufpointer to buffer into which to assemble the requested data if it is not available in contiguous addresses in the underlying buffer
sizenumber of bytes requested
dataaddress at which to store pointer: this will be a a direct pointer into the underlying buffer if the requested number of bytes are available at contiguous addresses, otherwise will be a copy of buf
Returns
number of bytes read or AVERROR

Definition at line 693 of file aviobuf.c.

Referenced by read_packet().

◆ avio_read_partial()

int avio_read_partial ( AVIOContext s,
unsigned char *  buf,
int  size 
)

Read size bytes from AVIOContext into buf.

Unlike avio_read(), this is allowed to read fewer bytes than requested. The missing bytes can be read in the next call. This always tries to read at least 1 byte. Useful to reduce latency in certain cases.

Returns
number of bytes read or AVERROR

Definition at line 705 of file aviobuf.c.

Referenced by ff_raw_read_partial_packet(), and get_packet_size().

◆ avio_rl16()

unsigned int avio_rl16 ( AVIOContext s)

Definition at line 735 of file aviobuf.c.

Referenced by apac_read_header(), ape_read_header(), asf_build_simple_index(), asf_get_packet(), asf_read_content_desc(), asf_read_ext_content(), asf_read_ext_content_desc(), asf_read_ext_stream_properties(), asf_read_frame_header(), asf_read_generic_value(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), asf_read_metadata_obj(), asf_read_multiple_payload(), asf_read_stream_properties(), asf_read_subpayload(), avi_read_header(), avi_read_nikon(), avi_sync(), avio_rl24(), avio_rl32(), avs_read_header(), avs_read_packet(), binka_read_header(), binka_read_packet(), cin_read_file_header(), cin_read_frame_header(), cine_read_header(), decode_str(), dfa_read_header(), ff_get_bmp_header(), ff_get_wav_header(), ff_sauce_read(), ff_spdif_read_packet(), ff_text_r8(), ff_voc_get_packet(), frm_read_header(), fsb_read_header(), gdv_read_header(), gdv_read_packet(), get_asf_string(), get_fourcc(), get_swf_tag(), get_tag(), get_value(), gif_read_ext(), gif_read_header(), guess_ni_flag(), hnm_read_header(), hnm_read_packet(), ingenient_read_packet(), ipu_read_header(), lvf_read_header(), mpc8_get_chunk_header(), msnwc_tcp_read_packet(), msp_read_header(), mtv_read_header(), nc_read_packet(), nsv_parse_NSVs_header(), nsv_read_chunk(), parse_ext(), parse_header(), parse_video_info(), parse_waveformatex(), pmp_header(), process_ea_header(), process_video_header_cmv(), process_video_header_mdec(), qcp_read_header(), qt_rtp_parse_packet(), read16(), read_chunk(), read_frame(), read_gab2_sub(), read_header(), read_odml_index(), read_packet(), read_uint16(), rl2_read_header(), s337m_read_packet(), scan_file(), seq_init_frame_buffers(), seq_parse_frame_data(), siff_parse_soun(), siff_parse_vbv1(), siff_read_packet(), simbiosis_imx_read_header(), smush_read_header(), sol_read_header(), swf_read_header(), swf_read_packet(), tmv_read_header(), track_header(), tta_read_header(), vid_read_header(), vid_read_packet(), voc_read_header(), wady_read_header(), wv_read_block_header(), xa_read_header(), xmd_read_header(), xmv_read_header(), and yop_read_header().

◆ avio_rl24()

unsigned int avio_rl24 ( AVIOContext s)

◆ avio_rl32()

unsigned int avio_rl32 ( AVIOContext s)

Definition at line 751 of file aviobuf.c.

Referenced by ads_read_header(), aiff_read_header(), aix_read_header(), aix_read_packet(), apac_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), apng_read_header(), apng_read_packet(), asf_build_simple_index(), asf_get_packet(), asf_read_ext_stream_properties(), asf_read_file_properties(), asf_read_frame_header(), asf_read_generic_value(), asf_read_header(), asf_read_marker(), asf_read_metadata(), asf_read_metadata_obj(), asf_read_packet_header(), asf_read_picture(), asf_read_properties(), asf_read_replicated_data(), asf_read_simple_index(), asf_read_single_payload(), asf_read_stream_properties(), ast_read_packet(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_read_nikon(), avio_rl64(), avs_read_header(), bfi_read_header(), bfi_read_packet(), binka_read_header(), bonk_read_header(), check_file_header(), cin_read_file_header(), cin_read_frame_header(), cine_read_header(), cine_read_packet(), dat_read_packet(), dcstr_read_header(), derf_read_header(), dfa_read_header(), dhav_read_header(), dhav_read_packet(), dsf_read_header(), dxa_read_header(), ea_read_packet(), epaf_read_header(), ff_ape_parse_tag(), ff_dnn_load_layer_avg_pool(), ff_dnn_load_layer_conv2d(), ff_dnn_load_layer_dense(), ff_dnn_load_layer_depth2space(), ff_dnn_load_layer_math_binary(), ff_dnn_load_layer_math_unary(), ff_dnn_load_layer_maximum(), ff_dnn_load_layer_pad(), ff_dnn_load_model_native(), ff_get_bmp_header(), ff_get_wav_header(), ff_mov_read_chan(), ff_mov_read_stsd_entries(), ff_read_riff_info(), ff_rm_read_mdpr_codecdata(), ff_voc_get_packet(), flac_read_header(), fourxm_read_packet(), fsb_read_header(), fwse_read_header(), genh_read_header(), get_aiff_header(), get_attachment(), get_codec_data(), get_duration(), get_fourcc(), get_riff(), get_swf_tag(), get_tag(), get_value(), guess_ni_flag(), gxf_header(), gxf_read_index(), hnm_read_header(), idcin_read_header(), idcin_read_packet(), iff_read_header(), iff_read_packet(), ifv_read_packet(), ingenient_read_packet(), ipu_read_header(), ircam_read_header(), ivr_read_header(), laf_read_header(), lvf_read_header(), lvf_read_packet(), mmf_read_header(), mods_read_header(), mods_read_packet(), mov_parse_stsd_audio(), mov_parse_stsd_video(), mov_read_cmov(), mov_read_custom(), mov_read_default(), mov_read_dref(), mov_read_frma(), mov_read_glbl(), mov_read_hdlr(), mov_read_keys(), mov_read_meta(), mov_read_sbgp(), mov_read_sgpd(), mov_read_sv3d(), mov_read_udta_string(), mov_read_wide(), mpc8_read_header(), mpc_read_header(), mpc_read_packet(), msnwc_tcp_read_packet(), msp_read_header(), mtaf_read_header(), mtv_read_header(), musx_read_header(), nsp_read_header(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nuv_header(), ogg_read_page(), parse_chunks(), parse_dsd_diin(), parse_dsd_prop(), parse_fragment(), parse_header(), parse_legacy_attrib(), parse_video_info(), parse_waveformatex(), pmp_header(), pmp_packet(), process_audio_header_eacs(), process_audio_header_sead(), process_ea_header(), process_video_header_vp6(), qcp_read_header(), qcp_read_packet(), qt_rtp_parse_packet(), rdt_load_mdpr(), read32(), read_atom(), read_chunk(), read_desc_chunk(), read_dst_frame(), read_gab2_sub(), read_header(), read_index(), read_ints(), read_odml_index(), read_packet(), read_table(), read_uint32(), rka_read_header(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), rpl_read_packet(), rsd_read_header(), scan_file(), sdr2_read_header(), sdr2_read_packet(), sdx_read_header(), ser_read_header(), siff_parse_soun(), siff_parse_vbv1(), siff_read_header(), siff_read_packet(), simbiosis_imx_read_header(), simbiosis_imx_read_packet(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smush_read_header(), sol_read_header(), sox_read_header(), svag_read_header(), svs_read_header(), swf_read_header(), swf_read_packet(), tak_read_header(), threedostr_read_header(), threedostr_read_packet(), tmv_read_header(), track_header(), tta_read_header(), txd_read_packet(), vag_read_header(), vc1t_read_header(), vc1t_read_packet(), viv_read_header(), vpk_read_header(), vqf_read_header(), wady_read_header(), wavarc_read_header(), wc3_read_header(), wc3_read_packet(), wv_read_block_header(), xa_read_header(), xmd_read_header(), xmv_fetch_video_packet(), xmv_process_packet_header(), xmv_read_extradata(), xmv_read_header(), xvag_read_header(), and xwma_read_header().

◆ avio_rl64()

uint64_t avio_rl64 ( AVIOContext s)

◆ avio_rb16()

unsigned int avio_rb16 ( AVIOContext s)

Definition at line 767 of file aviobuf.c.

Referenced by aal_read_packet(), aax_read_header(), aax_read_packet(), adx_read_header(), afc_read_header(), aix_read_header(), aix_read_packet(), amf_get_string(), amf_parse_object(), amf_skip_tag(), ast_read_header(), avio_rb24(), avio_rb32(), avr_read_header(), cdata_read_header(), daud_packet(), decode_fctl_chunk(), decode_str(), dtshd_read_header(), dxa_read_header(), ff_get_qtpalette(), ff_get_wav_header(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_mp4_parse_es_descr(), ff_rm_parse_packet(), ff_rm_read_mdpr_codecdata(), ff_text_r8(), flv_data_packet(), get_aiff_header(), get_num(), gxf_header(), hca_read_header(), hcom_read_header(), id3v2_parse(), iff_read_header(), ivr_read_header(), ivr_read_packet(), lmlm4_read_packet(), moflex_read_sync(), mov_metadata_loci(), mov_metadata_track_or_disc_number(), mov_parse_stsd_audio(), mov_parse_stsd_video(), mov_read_ares(), mov_read_chapters(), mov_read_clli(), mov_read_coll(), mov_read_colr(), mov_read_dec3(), mov_read_dref(), mov_read_enda(), mov_read_fiel(), mov_read_iloc(), mov_read_mdcv(), mov_read_mdhd(), mov_read_mvhd(), mov_read_pitm(), mov_read_sample_encryption_info(), mov_read_sidx(), mov_read_smdm(), mov_read_tkhd(), mov_read_udta_string(), mov_read_vpcc(), mp3_parse_info_tag(), mp3_parse_vbri_tag(), mpegps_psm_parse(), mpegps_read_pes_header(), mv_read_header(), mxf_get_eia608_packet(), mxf_read_generic_descriptor(), mxf_read_local_tags(), mxf_read_timecode_component(), parse_dsd_prop(), parse_MP4IODescrTag(), parse_MP4ODescrTag(), parse_MP4SLDescrTag(), qt_rtp_parse_packet(), r3d_read_red1(), r3d_read_reda(), r3d_read_redv(), rb_size(), rdt_load_mdpr(), read16(), read_header(), read_packet(), read_part_of_packet(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), rm_read_metadata(), rm_read_multi(), rm_sync(), rso_read_header(), sds_read_packet(), sga_read_header(), sga_read_packet(), smjpeg_read_header(), sup_read_packet(), and xvag_read_header().

◆ avio_rb24()

unsigned int avio_rb24 ( AVIOContext s)

◆ avio_rb32()

unsigned int avio_rb32 ( AVIOContext s)

Definition at line 782 of file aviobuf.c.

Referenced by aa_read_header(), aa_read_packet(), aal_read_packet(), aax_read_header(), ace_read_header(), afc_read_header(), aiff_read_header(), aix_read_header(), aix_read_packet(), amf_parse_object(), amf_skip_tag(), apac_read_header(), apng_read_header(), apng_read_packet(), ast_read_header(), ast_read_packet(), avi_sync(), avio_rb64(), copy_tag(), dat_read_packet(), decode_fctl_chunk(), decode_frame_header(), dtshd_read_header(), dxa_read_header(), ea_read_packet(), epaf_read_header(), ff_get_qtpalette(), ff_get_wav_header(), ff_mov_read_chan(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_rm_read_mdpr_codecdata(), find_sidx(), flv_read_header(), flv_read_packet(), fsb_read_header(), get_aiff_header(), get_packetheader(), get_tag(), gxf_material_tags(), gxf_packet(), gxf_resync_media(), gxf_track_tags(), hcom_read_header(), id3v2_parse(), iff_read_header(), iff_read_packet(), ircam_read_header(), ivr_read_header(), ivr_read_packet(), laf_read_header(), lmlm4_read_packet(), mmf_read_header(), mov_metadata_hmmt(), mov_metadata_loci(), mov_parse_stsd_audio(), mov_parse_stsd_video(), mov_read_ares(), mov_read_chap(), mov_read_chpl(), mov_read_cmov(), mov_read_ctts(), mov_read_custom(), mov_read_default(), mov_read_dmlp(), mov_read_dref(), mov_read_elst(), mov_read_ftyp(), mov_read_glbl(), mov_read_hdlr(), mov_read_iloc(), mov_read_keys(), mov_read_mdcv(), mov_read_mdhd(), mov_read_mfra(), mov_read_mvhd(), mov_read_pasp(), mov_read_pitm(), mov_read_pssh(), mov_read_SA3D(), mov_read_saio(), mov_read_saiz(), mov_read_sample_encryption_info(), mov_read_sbgp(), mov_read_schm(), mov_read_senc(), mov_read_sgpd(), mov_read_sidx(), mov_read_smdm(), mov_read_stco(), mov_read_stps(), mov_read_stsc(), mov_read_stsd(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_sv3d(), mov_read_tfdt(), mov_read_tfhd(), mov_read_timecode_track(), mov_read_tkhd(), mov_read_tmcd(), mov_read_trex(), mov_read_trun(), mov_read_udta_string(), mov_read_wide(), mp3_parse_info_tag(), mp3_parse_vbr_tags(), mp3_parse_vbri_tag(), mpegps_psm_parse(), msf_read_header(), musx_read_header(), mv_read_header(), mxf_get_eia608_packet(), mxf_read_essence_container_data(), mxf_read_generic_descriptor(), mxf_read_index_entry_array(), mxf_read_index_table_segment(), mxf_read_mca_sub_descriptor(), mxf_read_partition_pack(), mxf_read_primer_pack(), mxf_read_random_index_pack(), mxf_read_source_clip(), mxf_read_strong_ref_array(), mxf_read_track(), nsp_read_header(), nuv_resync(), ogg_read_page(), parse_dsd_diin(), parse_dsd_prop(), parse_fragment(), parse_keyframes_index(), parse_MP4SLDescrTag(), parse_packet_header(), process_audio_header_eacs(), qcp_read_header(), qt_rtp_parse_packet(), r3d_read_rdvo(), r3d_read_red1(), r3d_read_reda(), r3d_read_redv(), r3d_read_reos(), rb_size(), rdt_load_mdpr(), read32(), read_atom(), read_chapter(), read_desc_chunk(), read_dst_frame(), read_header(), read_index(), read_info_chunk(), read_mfra(), read_moof_duration(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_table(), read_tfra(), read_trun_duration(), redspark_read_header(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), rm_read_multi(), rm_sync(), rsd_read_header(), sdns_read_header(), siff_parse_soun(), siff_parse_vbv1(), skip_tag(), smjpeg_read_header(), smjpeg_read_packet(), smush_read_header(), smush_read_packet(), sox_read_header(), sup_read_packet(), swf_read_header(), thp_read_header(), thp_read_packet(), threedostr_read_header(), threedostr_read_packet(), vag_read_header(), vqf_read_header(), wc3_read_header(), wc3_read_packet(), wsd_read_header(), wve_read_header(), and xvag_read_header().

◆ 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
sthe read-only AVIOContext
bufbuffer to store the read line
maxlensize of the buffer
Returns
the length of the string written in the buffer, not including the final \0

Definition at line 790 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
sthe read-only AVIOContext
bufbuffer to store the read line
maxlensize of the buffer
Returns
the length of the string written in the buffer

Definition at line 807 of file aviobuf.c.

Referenced by parse_playlist().

◆ read_string_to_bprint()

static int64_t read_string_to_bprint ( AVIOContext s,
AVBPrint *  bp,
FFBPrintReadStringMode  mode,
int64_t  max_len 
)
static

Definition at line 820 of file aviobuf.c.

Referenced by read_string_to_bprint_overwrite().

◆ read_string_to_bprint_overwrite()

static int64_t read_string_to_bprint_overwrite ( AVIOContext s,
AVBPrint *  bp,
FFBPrintReadStringMode  mode,
int64_t  max_len 
)
static

◆ ff_read_line_to_bprint_overwrite()

int64_t ff_read_line_to_bprint_overwrite ( AVIOContext s,
struct 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.

Parameters
sthe read-only AVIOContext
bpthe AVBPrint buffer
Returns
the length of the read line not including the line endings, negative on error, or if the buffer becomes truncated.

Definition at line 876 of file aviobuf.c.

Referenced by concat_parse_script().

◆ ff_read_string_to_bprint_overwrite()

int64_t ff_read_string_to_bprint_overwrite ( AVIOContext s,
struct AVBPrint *  bp,
int64_t  max_len 
)

Read a whole null-terminated string of text from AVIOContext to an AVBPrint buffer overwriting its contents.

Stop reading after reaching the maximum length, a \0 or EOF.

Parameters
sthe read-only AVIOContext
bpthe AVBPrint buffer
max_lenthe maximum length to be read from the AVIOContext. Negative (< 0) values signal that there is no known maximum length applicable. A maximum length of zero means that the AVIOContext is not touched, and the function returns with a read length of zero. In all cases the AVBprint is cleared.
Returns
the length of the read string not including the terminating null, negative on error, or if the buffer becomes truncated.

Definition at line 881 of file aviobuf.c.

Referenced by mov_read_kind().

◆ avio_get_str()

int avio_get_str ( AVIOContext pb,
int  maxlen,
char *  buf,
int  buflen 
)

Read a string from pb into buf.

The reading will terminate when either a NULL character was encountered, maxlen bytes have been read, or nothing more can be read from pb. The result is guaranteed to be NULL-terminated, it will be truncated if buf is too small. Note that the string is not interpreted or validated in any way, it might get truncated in the middle of a sequence for multi-byte encodings.

Returns
number of bytes read (is always <= maxlen). If reading ends on EOF or error, the return value will be one more than bytes actually read.

Definition at line 887 of file aviobuf.c.

Referenced by aa_read_header(), ape_tag_read_field(), cine_read_header(), ff_dnn_load_model_native(), get_strl(), ivr_read_header(), mov_metadata_loci(), mov_read_chapters(), mpegps_read_header(), mxf_read_us_ascii_string(), nsp_read_header(), read_apic(), read_info_chunk(), and var_read_string().

◆ avio_rb64()

uint64_t avio_rb64 ( AVIOContext s)

◆ ffio_read_varlen()

uint64_t ffio_read_varlen ( AVIOContext bc)

◆ ffio_fdopen()

int ffio_fdopen ( AVIOContext **  s,
URLContext h 
)

Create and initialize a AVIOContext for accessing the resource referenced by the URLContext h.

Note
When the URLContext h has been opened in read+write mode, the AVIOContext can be used only for writing.
Parameters
sUsed to return the pointer to the created AVIOContext. In case of failure the pointed to value is set to NULL.
Returns
>= 0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 948 of file aviobuf.c.

Referenced by avio_accept(), ff_rtp_chain_mux_open(), and ffio_open_whitelist().

◆ ffio_geturlcontext()

URLContext* ffio_geturlcontext ( AVIOContext s)

Return the URLContext associated with the AVIOContext.

Parameters
sIO context
Returns
pointer to URLContext or NULL.

Definition at line 1004 of file aviobuf.c.

Referenced by dashenc_io_close(), dashenc_io_open(), hlsenc_io_close(), hlsenc_io_open(), and open_url_keepalive().

◆ ffio_copy_url_options()

int ffio_copy_url_options ( AVIOContext pb,
AVDictionary **  avio_opts 
)

Read url related dictionary options from the AVIOContext and write to the given dictionary.

Definition at line 1015 of file aviobuf.c.

Referenced by dash_read_header(), hls_read_header(), and imf_read_header().

◆ update_checksum()

static void update_checksum ( AVIOContext s)
static

Definition at line 1039 of file aviobuf.c.

Referenced by ffio_ensure_seekback(), and ffio_init_checksum().

◆ ffio_ensure_seekback()

int ffio_ensure_seekback ( AVIOContext s,
int64_t  buf_size 
)

Ensures that the requested seekback buffer size will be available.

Will ensure that when reading sequentially up to buf_size, seeking within the current pos and pos+buf_size is possible. Once the stream position moves outside this window or another ffio_ensure_seekback call requests a buffer outside this window this guarantee is lost.

Definition at line 1047 of file aviobuf.c.

Referenced by apng_read_header(), apng_read_packet(), bonk_read_header(), dhav_read_header(), id3v2_parse(), id3v2_read_internal(), ivr_read_header(), mlp_read_header(), mov_read_wave(), mp3_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_read_header(), mpegts_resync(), mpjpeg_read_packet(), ogg_read_page(), rm_read_header(), set_spdif(), sga_read_packet(), subviewer_read_header(), and wsvqa_read_packet().

◆ ffio_limit()

int ffio_limit ( AVIOContext s,
int  size 
)

◆ ffio_realloc_buf()

int ffio_realloc_buf ( AVIOContext s,
int  buf_size 
)

Reallocate a given buffer for AVIOContext.

Parameters
sthe AVIOContext to realloc.
buf_sizerequired new buffer size.
Returns
0 on success, a negative AVERROR on failure.

Definition at line 1127 of file aviobuf.c.

Referenced by ff_configure_buffers_for_index().

◆ ffio_rewind_with_probe_data()

int ffio_rewind_with_probe_data ( AVIOContext s,
unsigned char **  buf,
int  buf_size 
)

Rewind the AVIOContext using the specified buffer containing the first buf_size bytes of the file.

Used after probing to avoid seeking. Joins buf and s->buffer, taking any overlap into consideration.

Note
s->buffer must overlap with buf or they can't be joined and the function fails
Parameters
sThe read-only AVIOContext to rewind
bufThe probe buffer containing the first buf_size bytes of the file
buf_sizeThe size of buf
Returns
>= 0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 1172 of file aviobuf.c.

Referenced by av_probe_input_buffer2(), and ff_img_read_header().

◆ avio_open()

int avio_open ( AVIOContext **  s,
const char *  url,
int  flags 
)

Create and initialize a AVIOContext for accessing the resource indicated by url.

Note
When the resource indicated by url has been opened in read+write mode, the AVIOContext can be used only for writing.
Parameters
sUsed to return the pointer to the created AVIOContext. In case of failure the pointed to value is set to NULL.
urlresource to access
flagsflags which control how the resource indicated by url is to be opened
Returns
>= 0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 1215 of file aviobuf.c.

Referenced by ff_dnn_load_model_native(), file_read(), init(), main(), open_output_file(), read_graph(), and writer_open().

◆ ffio_open_whitelist()

int ffio_open_whitelist ( AVIOContext **  s,
const char *  filename,
int  flags,
const AVIOInterruptCB int_cb,
AVDictionary **  options,
const char *  whitelist,
const char *  blacklist 
)

Definition at line 1220 of file aviobuf.c.

Referenced by avio_open2(), import_pem(), io_open_default(), and parse_playlist().

◆ avio_open2()

int avio_open2 ( AVIOContext **  s,
const char *  url,
int  flags,
const AVIOInterruptCB int_cb,
AVDictionary **  options 
)

Create and initialize a AVIOContext for accessing the resource indicated by url.

Note
When the resource indicated by url has been opened in read+write mode, the AVIOContext can be used only for writing.
Parameters
sUsed to return the pointer to the created AVIOContext. In case of failure the pointed to value is set to NULL.
urlresource to access
flagsflags which control how the resource indicated by url is to be opened
int_cban interrupt callback to be used at the protocols level
optionsA dictionary filled with protocol-private options. On return this parameter will be destroyed and replaced with a dict containing options that were not found. May be NULL.
Returns
>= 0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 1241 of file aviobuf.c.

Referenced by avio_open(), dash_init(), dump_attachment(), enc_stats_get_file(), find_sidx(), get_preset_file_2(), lavfi_read_header(), main(), of_add_attachments(), of_open(), open_url(), parse_manifest(), print_sdp(), process_client(), read_binary(), read_mfra(), and write_fragment().

◆ avio_close()

int avio_close ( AVIOContext s)

Close the resource accessed by the AVIOContext s and free it.

This function can only be used if s was opened by avio_open().

The internal buffer is automatically flushed before closing the resource.

Returns
0 on success, an AVERROR < 0 on error.
See also
avio_closep

Definition at line 1247 of file aviobuf.c.

Referenced by avformat_close_input(), avio_closep(), dash_free(), do_encrypt(), dump_attachment(), find_sidx(), import_pem(), io_close2_default(), main(), parse_manifest(), parse_playlist(), process_client(), read_binary(), read_mfra(), write_fragment(), and writer_close().

◆ avio_closep()

int avio_closep ( AVIOContext **  s)

Close the resource accessed by the AVIOContext *s, free it and set the pointer pointing to it to NULL.

This function can only be used if s was opened by avio_open().

The internal buffer is automatically flushed before closing the resource.

Returns
0 on success, an AVERROR < 0 on error.
See also
avio_close

Definition at line 1280 of file aviobuf.c.

Referenced by avformat_open_input(), fc_close(), ff_dnn_load_model_native(), ff_rtp_chain_mux_open(), ff_rtsp_undo_setup(), ffio_fdopen(), file_read(), lavfi_read_header(), main(), new_output_stream(), of_add_attachments(), of_enc_stats_close(), of_write_trailer(), open_output_file(), print_report(), print_sdp(), read_graph(), sap_write_close(), and uninit().

◆ avio_vprintf()

int avio_vprintf ( AVIOContext s,
const char *  fmt,
va_list  ap 
)

Writes a formatted string to the context taking a va_list.

Returns
number of bytes written, < 0 on error.

Definition at line 1287 of file aviobuf.c.

Referenced by avio_printf(), and writer_printf_avio().

◆ avio_printf()

int avio_printf ( AVIOContext s,
const char *  fmt,
  ... 
)

Definition at line 1303 of file aviobuf.c.

◆ avio_print_string_array()

void avio_print_string_array ( AVIOContext s,
const char *  strings[] 
)

Write a NULL terminated array of strings to the context.

Usually you don't need to use this function directly but its macro wrapper, avio_print.

Definition at line 1315 of file aviobuf.c.

◆ avio_pause()

int avio_pause ( AVIOContext h,
int  pause 
)

Pause and resume playing - only meaningful if using a network streaming protocol (e.g.

MMS).

Parameters
hIO context from which to call the read_pause function pointer
pause1 for pause, 0 for resume

Definition at line 1321 of file aviobuf.c.

Referenced by av_read_pause(), and av_read_play().

◆ avio_seek_time()

int64_t avio_seek_time ( AVIOContext h,
int  stream_index,
int64_t  timestamp,
int  flags 
)

Seek to a given timestamp relative to some component stream.

Only meaningful if using a network streaming protocol (e.g. MMS.).

Parameters
hIO context from which to call the seek function pointers
stream_indexThe stream index that the timestamp is relative to. If stream_index is (-1) the timestamp should be in AV_TIME_BASE units from the beginning of the presentation. If a stream_index >= 0 is used and the protocol does not support seeking based on component streams, the call will fail.
timestamptimestamp in AVStream.time_base units or if there is no stream specified then in AV_TIME_BASE units.
flagsOptional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE and AVSEEK_FLAG_ANY. The protocol may silently ignore AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will fail if used and not supported.
Returns
>= 0 on success
See also
AVInputFormat::read_seek

Definition at line 1328 of file aviobuf.c.

Referenced by asf_read_seek(), and flv_read_seek().

◆ avio_read_to_bprint()

int avio_read_to_bprint ( AVIOContext h,
struct AVBPrint *  pb,
size_t  max_size 
)

Read contents of h into print buffer, up to max_size bytes, or up to EOF.

Returns
0 for success (max_size bytes read or EOF reached), negative error code otherwise

Definition at line 1347 of file aviobuf.c.

Referenced by ff_imf_parse_cpl(), file_read(), gif_read_header(), lavfi_read_header(), parse_assetmap(), and parse_manifest().

◆ avio_accept()

int avio_accept ( AVIOContext s,
AVIOContext **  c 
)

Accept and allocate a client context on a server context.

Parameters
sthe server context
cthe client context, must be unallocated
Returns
>= 0 on success or a negative value corresponding to an AVERROR on failure

Definition at line 1365 of file aviobuf.c.

Referenced by main().

◆ avio_handshake()

int avio_handshake ( AVIOContext c)

Perform one step of the protocol handshake to accept a new client.

This function must be called on a client returned by avio_accept() before using it as a read/write context. It is separate from avio_accept() because it may block. A step of the handshake is defined by places where the application may decide to change the proceedings. For example, on a protocol with a request header and a reply header, each one can constitute a step because the application may use the parameters from the request to change parameters in the reply; or each individual chunk of the request can constitute a step. If the handshake is already finished, avio_handshake() does nothing and returns 0 immediately.

Parameters
cthe client context to perform the handshake on
Returns
0 on a complete and successful handshake > 0 if the handshake progressed, but is not complete < 0 for an AVERROR code

Definition at line 1376 of file aviobuf.c.

Referenced by process_client().

◆ dyn_buf_write()

static int dyn_buf_write ( void *  opaque,
uint8_t *  buf,
int  buf_size 
)
static

Definition at line 1391 of file aviobuf.c.

Referenced by dyn_packet_buf_write(), and url_open_dyn_buf_internal().

◆ dyn_packet_buf_write()

static int dyn_packet_buf_write ( void *  opaque,
uint8_t *  buf,
int  buf_size 
)
static

Definition at line 1423 of file aviobuf.c.

Referenced by url_open_dyn_buf_internal().

◆ dyn_buf_seek()

static int64_t dyn_buf_seek ( void *  opaque,
int64_t  offset,
int  whence 
)
static

Definition at line 1438 of file aviobuf.c.

Referenced by url_open_dyn_buf_internal().

◆ url_open_dyn_buf_internal()

static int url_open_dyn_buf_internal ( AVIOContext **  s,
int  max_packet_size 
)
static

Definition at line 1454 of file aviobuf.c.

Referenced by avio_open_dyn_buf(), ffio_open_dyn_packet_buf(), and ffio_open_null_buf().

◆ avio_open_dyn_buf()

int avio_open_dyn_buf ( AVIOContext **  s)

◆ ffio_open_dyn_packet_buf()

int ffio_open_dyn_packet_buf ( AVIOContext **  s,
int  max_packet_size 
)

Open a write only packetized memory stream with a maximum packet size of 'max_packet_size'.

The stream is stored in a memory buffer with a big-endian 4 byte header giving the packet size in bytes.

Parameters
snew IO context
max_packet_sizemaximum packet size (must be > 0)
Returns
zero if no error.

Definition at line 1480 of file aviobuf.c.

Referenced by ff_mov_add_hinted_packet(), ff_rtp_chain_mux_open(), and ff_rtsp_tcp_write_packet().

◆ avio_get_dyn_buf()

int avio_get_dyn_buf ( AVIOContext s,
uint8_t **  pbuffer 
)

◆ ffio_reset_dyn_buf()

void ffio_reset_dyn_buf ( AVIOContext s)

Reset a dynamic buffer.

Resets everything, but keeps the allocated buffer for later use.

Definition at line 1509 of file aviobuf.c.

Referenced by asf_write_header1(), asf_write_markers(), end_ebml_master_crc32(), mkv_assemble_cues(), mkv_update_codecprivate(), mkv_write_tag(), mkv_write_track(), mkv_write_trailer(), put_packet(), and put_str16().

◆ avio_close_dyn_buf()

int avio_close_dyn_buf ( AVIOContext s,
uint8_t **  pbuffer 
)

◆ ffio_free_dyn_buf()

void ffio_free_dyn_buf ( AVIOContext **  s)

Free a dynamic buffer.

Parameters
sa pointer to an IO context opened by avio_open_dyn_buf()

Definition at line 1548 of file aviobuf.c.

Referenced by ac3_close_context(), ac3_handle_packet(), asf_write_header1(), asfrtp_close_context(), asfrtp_parse_packet(), dash_free(), decode_str(), dv_close_context(), dv_handle_packet(), end_ebml_master_crc32(), ff_ape_write_tag(), ff_hevc_annexb2mp4_buf(), ff_id3v2_write_apic(), ff_isom_write_av1c(), ff_isom_write_avcc(), ff_mov_close_hinting(), ff_mov_generate_squashed_ttml_packet(), ff_rtp_chain_mux_open(), ff_rtsp_undo_setup(), film_deinit(), h261_close_context(), h261_handle_packet(), h263_close_context(), h263_handle_packet(), hls_write_trailer(), id3v2_put_priv(), id3v2_put_ttag(), jpeg_close_context(), jpeg_parse_packet(), latm_close_context(), latm_parse_packet(), mkv_deinit(), mkv_write_attachments(), mkv_write_chapters(), mkv_write_trailer(), mov_flush_fragment(), mov_flush_fragment_interleaving(), mov_free(), mov_write_mfra_tag(), mov_write_track_udta_tag(), mov_write_udta_tag(), mpa_robust_close_context(), mpa_robust_parse_packet(), mpegts_write_packet_internal(), nut_write_packet(), nut_write_trailer(), rtp_mpegts_write_close(), rtp_mpegts_write_header(), set_codec_str(), svq3_close_context(), svq3_parse_packet(), tta_deinit(), vc2hq_handle_frame_fragment(), vc2hq_handle_packet(), vp8_broken_sequence(), vp8_close_context(), vp8_handle_packet(), vp9_close_context(), vp9_handle_packet(), webm_chunk_deinit(), write_chapter(), write_ctoc(), write_headers(), xiph_close_context(), and xiph_handle_packet().

◆ null_buf_write()

static int null_buf_write ( void *  opaque,
uint8_t *  buf,
int  buf_size 
)
static

Definition at line 1560 of file aviobuf.c.

Referenced by ffio_open_null_buf().

◆ ffio_open_null_buf()

int ffio_open_null_buf ( AVIOContext **  s)

Open a write-only fake memory stream.

The written data is not stored anywhere - this is only used for measuring the amount of data written.

Parameters
snew IO context
Returns
zero if no error.

Definition at line 1570 of file aviobuf.c.

Referenced by get_moov_size(), get_sidx_size(), mov_write_moof_tag(), and mov_write_sidx_tags().

◆ ffio_close_null_buf()

int ffio_close_null_buf ( AVIOContext s)

Close a null buffer.

Parameters
san IO context opened by ffio_open_null_buf
Returns
the number of bytes written to the null buffer

Definition at line 1580 of file aviobuf.c.

Referenced by get_moov_size(), get_sidx_size(), mov_write_moof_tag(), and mov_write_sidx_tags().

Variable Documentation

◆ ff_avio_options

const AVOption ff_avio_options[]
static
Initial value:
= {
{"protocol_whitelist", "List of protocols that are allowed to be used", OFFSET(protocol_whitelist), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
{ NULL },
}

Definition at line 62 of file aviobuf.c.

◆ ff_avio_class

const AVClass ff_avio_class
Initial value:
= {
.class_name = "AVIOContext",
.item_name = av_default_item_name,
.option = ff_avio_options,
.child_next = ff_avio_child_next,
.child_class_iterate = child_class_iterate,
}

Definition at line 67 of file aviobuf.c.

Referenced by ffio_fdopen(), and format_child_class_iterate().

put_str16
static int put_str16(AVIOContext *s, const char *str, const int be)
Definition: aviobuf.c:405
D
#define D
Definition: aviobuf.c:61
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
OFFSET
#define OFFSET(x)
Definition: aviobuf.c:59
ff_avio_child_next
static void * ff_avio_child_next(void *obj, void *prev)
Definition: aviobuf.c:46
s
#define s(width, name)
Definition: cbs_vp9.c:256
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
ff_avio_options
static const AVOption ff_avio_options[]
Definition: aviobuf.c:62
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
AVIOContext
Bytestream IO Context.
Definition: avio.h:166
ret
ret
Definition: filter_design.txt:187
convert_header.str
string str
Definition: convert_header.py:20
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
child_class_iterate
static const AVClass * child_class_iterate(void **iter)
Definition: aviobuf.c:52
read
static uint32_t BS_FUNC() read(BSCTX *bc, unsigned int n)
Return n bits from the buffer, n has to be in the 0-32 range.
Definition: bitstream_template.h:231