aviobuf.c File Reference
#include "libavutil/crc.h"
#include "libavutil/dict.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "avformat.h"
#include "avio.h"
#include "avio_internal.h"
#include "internal.h"
#include "url.h"
#include <stdarg.h>
Include dependency graph for aviobuf.c:

Go to the source code of this file.

Data Structures

struct  DynBuffer
 

Macros

#define IO_BUFFER_SIZE   32768
 
#define SHORT_SEEK_THRESHOLD   4096
 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 GET_STR16(type, read)
 

Typedefs

typedef struct DynBuffer DynBuffer
 

Functions

static voidffio_url_child_next (void *obj, void *prev)
 
static const AVClassffio_url_child_class_next (const AVClass *prev)
 
static void fill_buffer (AVIOContext *s)
 
static int url_resetbuf (AVIOContext *s, int flags)
 
int ffio_init_context (AVIOContext *s, 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...
 
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, int count)
 
void avio_write (AVIOContext *s, const unsigned char *buf, int size)
 
void avio_flush (AVIOContext *s)
 Force flushing of buffered data to the output s. 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 url_feof (AVIOContext *s)
 feof() equivalent for AVIOContext. 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...
 
int avio_put_str16le (AVIOContext *s, const char *str)
 Convert an UTF-8 string to UTF-16LE and write it. More...
 
int ff_get_v_length (uint64_t val)
 Get the length in bytes which is needed to store val as v. More...
 
void ff_put_v (AVIOContext *bc, uint64_t val)
 Put val using a variable number of bytes. More...
 
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)
 
unsigned long ff_crc04C11DB7_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_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 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...
 
int ffio_set_buf_size (AVIOContext *s, int buf_size)
 
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 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_printf (AVIOContext *s, const char *fmt,...)
 
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...
 
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_close_dyn_buf (AVIOContext *s, uint8_t **pbuffer)
 Return the written size and a pointer to the buffer. More...
 

Variables

static const AVOption ffio_url_options []
 
const AVClass ffio_url_class
 

Macro Definition Documentation

#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;\
}\
Bytestream IO Context.
Definition: avio.h:68
#define PUT_UTF8(val, tmp, PUT_BYTE)
Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).
Definition: common.h:349
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
uint8_t
#define GET_UTF16(val, GET_16BIT, ERROR)
Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:321
ret
Definition: avfilter.c:821
void * buf
Definition: avisynth_c.h:594
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer 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.Buffer references ownership and permissions
#define type
Synth Windw Norm while(pin< pend)%Until the end...%---Analysis x_w
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return it should return

Definition at line 651 of file aviobuf.c.

#define IO_BUFFER_SIZE   32768

Definition at line 35 of file aviobuf.c.

Referenced by ffio_fdopen(), and fill_buffer().

#define SHORT_SEEK_THRESHOLD   4096

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 42 of file aviobuf.c.

Referenced by avio_seek().

Typedef Documentation

typedef struct DynBuffer DynBuffer

Function Documentation

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 av_free().

Parameters
bufferMemory block for input/output operations via AVIOContext. The buffer must be allocated with av_malloc() and friends.
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.
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 109 of file aviobuf.c.

Referenced by ffio_fdopen(), http_receive_data(), ism_write_header(), open_null_ctx(), parse_picture(), rdt_parse_packet(), read_gab2_sub(), swf_read_header(), url_open_dyn_buf_internal(), and wtvfile_open_sector().

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 839 of file aviobuf.c.

Referenced by hls_window(), hls_write_trailer(), and read_file().

void avio_flush ( AVIOContext s)

Force flushing of buffered data to the output s.

Force the buffered data to be immediately written to the output, without to wait to fill the internal buffer.

Definition at line 193 of file aviobuf.c.

Referenced by aiff_write_header(), aiff_write_trailer(), asf_write_header(), asf_write_trailer(), ast_write_header(), ast_write_trailer(), av_write_frame(), av_write_trailer(), avi_write_header(), avi_write_ix(), avio_close(), avio_close_dyn_buf(), avio_tell(), avio_write(), caf_write_header(), caf_write_trailer(), copy_moof(), dump_attachment(), ff_framehash_write_header(), ff_mov_write_packet(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_punch_packets(), ff_rtp_send_rtcp_feedback(), ffm_write_header(), flac_write_trailer(), flush_packet(), gif_write_header(), gxf_write_header(), gxf_write_trailer(), ico_write_header(), ilbc_write_header(), ism_flush(), ism_write_header(), jacosub_write_header(), main(), md5_finish(), microdvd_write_header(), mkv_write_header(), mmf_rate(), mov_flush_fragment(), mov_write_header(), mpegts_write_flush(), mpegts_write_header(), mpegts_write_pes(), mpjpeg_write_header(), mxf_write_packet(), mxf_write_partition(), nut_write_header(), ogg_write_page(), print_report(), put_vcd_padding_sector(), rm_write_header(), roq_write_header(), rso_write_header(), rtcp_send_sr(), segment_end(), shift_data(), smjpeg_write_header(), sox_write_header(), sox_write_trailer(), split_write_packet(), swf_write_header(), vc1test_write_trailer(), write_fragment(), write_header(), write_manifest(), write_packet(), and write_trailer().

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 633 of file aviobuf.c.

Referenced by ape_tag_read_field(), avio_tell(), ffm2_read_header(), ffm_read_header(), mov_read_chapters(), mpegps_read_header(), read_apic(), read_chapter(), read_info_chunk(), and var_read_string().

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.
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 799 of file aviobuf.c.

Referenced by build_feed_streams(), main(), open_slave(), read_file(), and shift_data().

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.
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 804 of file aviobuf.c.

Referenced by avio_open(), copy_moof(), dump_attachment(), get_preset_file_2(), hls_start(), hls_window(), img_read_packet(), init_input(), main(), mov_open_dref(), open_output_file(), opt_progress(), parse_fragment(), parse_playlist(), read_mfra(), seg_write_header(), segment_list_open(), segment_start(), write_fragment(), write_manifest(), and write_packet().

int avio_pause ( AVIOContext h,
int  pause 
)

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

MMS).

Parameters
pause1 for pause, 0 for resume

Definition at line 859 of file aviobuf.c.

Referenced by av_read_pause(), and av_read_play().

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

Definition at line 846 of file aviobuf.c.

int avio_put_str ( AVIOContext s,
const char *  str 
)

Write a NULL-terminated string.

Returns
number of bytes written.

Definition at line 307 of file aviobuf.c.

Referenced by caf_write_header(), ff_ape_write(), ff_id3v2_write_apic(), ffm_write_header(), and id3v2_encode_string().

int avio_put_str16le ( AVIOContext s,
const char *  str 
)

Convert an UTF-8 string to UTF-16LE and write it.

Returns
number of bytes written.

Definition at line 318 of file aviobuf.c.

Referenced by asf_write_header1(), id3v2_encode_string(), mms_put_utf16(), put_str16(), write_metadata_header(), write_table_entries_attrib(), and write_tag().

int avio_r8 ( AVIOContext s)

Definition at line 469 of file aviobuf.c.

Referenced by aea_read_header(), amf_parse_object(), amr_read_packet(), ape_read_header(), ape_tag_read_field(), asf_read_frame_header(), asf_read_header(), asf_read_language_list(), asf_read_marker(), asf_read_picture(), asf_read_stream_properties(), asfrtp_parse_packet(), avi_read_header(), avi_sync(), avio_get_str(), avio_rb16(), avio_rb24(), avio_rl16(), avio_rl24(), avio_tell(), avs_read_packet(), bfi_read_packet(), bmv_read_packet(), cdata_read_header(), cin_read_file_header(), cin_read_frame_header(), decode_str(), dv_read_header(), dxa_read_header(), ebml_read_num(), ebml_read_uint(), efi_read(), ff_asf_get_packet(), ff_asf_parse_packet(), ff_get_line(), ff_id3v2_parse(), ff_mov_read_stsd_entries(), ff_mp4_parse_es_descr(), ff_mp4_read_dec_config_descr(), ff_mp4_read_descr(), ff_mp4_read_descr_len(), ff_sauce_read(), ff_smil_extract_next_chunk(), ff_spdif_read_packet(), ff_subtitles_read_chunk(), ff_voc_get_packet(), ffio_read_varlen(), ffm2_read_header(), ffm_read_header(), ffm_resync(), 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(), g723_1_read_packet(), get_attachment(), get_codec_data(), get_line(), get_pts(), get_size(), get_str(), get_str8(), get_strl(), get_token(), gif_read_ext(), gif_read_packet(), gif_skip_subblocks(), gxf_header(), gxf_material_tags(), gxf_packet(), gxf_resync_media(), gxf_track_tags(), iff_read_header(), init_stream(), ipmovie_read_header(), klv_decode_ber_length(), lvf_read_header(), matroska_resync(), mmf_read_header(), mov_metadata_gnre(), mov_metadata_int8_bypass_padding(), mov_metadata_int8_no_padding(), mov_read_chpl(), mov_read_ctts(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_hdlr(), mov_read_mac_string(), mov_read_mdhd(), mov_read_mvhd(), mov_read_sbgp(), mov_read_stco(), mov_read_stsc(), mov_read_stsd(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_tfhd(), mov_read_tkhd(), mov_read_trex(), mov_read_trun(), mpc8_read_header(), mpc_read_header(), mpegps_psm_parse(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_resync(), msnwc_tcp_read_header(), mtv_read_header(), mxf_read_generic_descriptor(), mxf_read_index_entry_array(), mxf_read_pixel_layout(), 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_keyframes_index(), parse_MP4IODescrTag(), parse_MP4SLDescrTag(), parse_packet_header(), pmp_packet(), process_audio_header_eacs(), process_audio_header_elements(), qcp_read_header(), qcp_read_packet(), r3d_read_red1(), r3d_read_reda(), r3d_read_redv(), read_apic(), read_arbitary(), read_braindead_odml_indx(), read_frame(), read_geobtag(), read_header(), read_line(), read_part_of_packet(), read_tfra(), read_ttag(), read_xing_toc(), resync(), rm_assemble_video_frame(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_metadata(), seq_parse_frame_data(), skip_reserved(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), sol_read_header(), swf_read_header(), swf_read_packet(), sync(), tak_read_header(), tmv_read_header(), vc1t_read_header(), vc1t_read_packet(), vid_read_packet(), vivo_get_packet_header(), wv_read_block_header(), wv_read_packet(), yop_read_header(), yuv4_read_header(), and yuv4_read_packet().

unsigned int avio_rb32 ( AVIOContext s)

Definition at line 610 of file aviobuf.c.

Referenced by afc_read_header(), aiff_read_header(), amf_parse_object(), ast_read_header(), ast_read_packet(), avi_sync(), avio_rb64(), avio_tell(), check(), copy_tag(), decode_frame_header(), dv_read_header(), dxa_read_header(), ea_read_packet(), ebml_read_float(), epaf_read_header(), ff_id3v2_parse(), ff_mov_read_chan(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_rm_read_mdpr_codecdata(), ffm2_read_header(), ffm_read_header(), flv_read_header(), flv_read_packet(), get_aiff_header(), get_packetheader(), get_tag(), gxf_material_tags(), gxf_packet(), gxf_resync_media(), gxf_track_tags(), iff_read_header(), ircam_read_header(), lmlm4_read_packet(), matroska_read_header(), matroska_resync(), mmf_read_header(), mov_read_chap(), mov_read_chpl(), mov_read_cmov(), mov_read_ctts(), mov_read_custom_metadata(), mov_read_default(), mov_read_dref(), mov_read_elst(), mov_read_ftyp(), mov_read_glbl(), mov_read_hdlr(), mov_read_mdhd(), mov_read_mvhd(), mov_read_pasp(), mov_read_sbgp(), mov_read_stco(), mov_read_stps(), mov_read_stsc(), mov_read_stsd(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), 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_vbr_tags(), mpegps_psm_parse(), mv_read_header(), mxf_read_content_storage(), mxf_read_generic_descriptor(), mxf_read_index_entry_array(), mxf_read_index_table_segment(), mxf_read_material_package(), mxf_read_partition_pack(), mxf_read_primer_pack(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_source_package(), mxf_read_track(), nuv_resync(), parse_fragment(), parse_keyframes_index(), parse_MP4SLDescrTag(), parse_packet_header(), parse_picture(), 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(), rdt_load_mdpr(), read_atom(), read_chapter(), read_desc_chunk(), read_header(), read_index(), read_info_chunk(), read_mfra(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_table(), read_tfra(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), siff_parse_soun(), siff_parse_vbv1(), smjpeg_read_header(), smjpeg_read_packet(), smush_read_header(), smush_read_packet(), sox_read_header(), swf_read_header(), sync(), thp_read_header(), thp_read_packet(), vqf_read_header(), wc3_read_header(), and wc3_read_packet().

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 478 of file aviobuf.c.

Referenced by add_metadata(), adx_read_header(), aiff_read_header(), amf_get_string(), amr_read_header(), amr_read_packet(), apc_read_header(), ape_read_header(), ape_read_packet(), ape_tag_read_field(), append_packet_chunked(), asf_read_stream_properties(), av_probe_input_buffer(), av_read(), avi_read_header(), avi_read_nikon(), avi_read_tag(), avio_tell(), avs_read_packet(), avs_read_video_packet(), bfi_read_header(), bmv_read_packet(), cdxl_read_packet(), cin_read_packet(), copy_moof(), copy_tag(), decode_frame(), decode_main_header(), decode_stream_header(), dtshd_read_header(), dv_read_header(), dv_read_packet(), dv_read_timecode(), dxa_read_packet(), ebml_read_ascii(), ebml_read_binary(), ff_ape_parse_tag(), ff_asf_parse_packet(), ff_id3v1_read(), ff_id3v2_parse(), ff_id3v2_read(), ff_mp4_read_dec_config_descr(), ff_rm_parse_packet(), ff_rtsp_open_transport_ctx(), ff_sauce_read(), ff_spdif_read_packet(), ffm2_read_header(), ffm_read_data(), ffm_read_header(), film_read_header(), film_read_packet(), flac_read_header(), flic_read_header(), flic_read_packet(), flv_get_extradata(), flv_queue_extradata(), fourxm_read_header(), fourxm_read_packet(), g723_1_read_packet(), get_codec_data(), get_meta(), get_metadata(), get_packet_header(), get_pts(), get_riff(), get_str(), get_tag(), gif_read_ext(), gif_read_packet(), idcin_read_header(), idcin_read_packet(), iff_read_header(), iff_read_packet(), ilbc_read_header(), ilbc_read_packet(), img_read_packet(), init_stream(), ipmovie_read_header(), klv_read_packet(), load_ipmovie_packet(), lxf_read_header(), lxf_read_packet(), main(), modplug_read_header(), mov_metadata_raw(), mov_read_chpl(), mov_read_cmov(), mov_read_custom_metadata(), mov_read_dref(), mov_read_dvc1(), mov_read_extradata(), mov_read_ftyp(), mov_read_glbl(), mov_read_hdlr(), mov_read_strf(), mov_read_stsz(), mov_read_udta_string(), mov_read_wave(), mpc8_parse_seektable(), mpc8_read_header(), mpc_read_header(), mpc_read_packet(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_pcr(), mpegts_raw_read_packet(), mpegts_read_header(), mxf_decrypt_triplet(), mxf_read_content_storage(), mxf_read_cryptographic_context(), mxf_read_generic_descriptor(), mxf_read_local_tags(), mxf_read_material_package(), mxf_read_partition_pack(), mxf_read_primer_pack(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_source_package(), mxf_read_track(), mxg_update_cache(), next_byte(), nsv_parse_NSVf_header(), nuv_header(), nuv_packet(), nuv_read_dts(), ogg_read_page(), ogg_replace_stream(), oma_read_header(), oma_read_seek(), open_output_file(), parse_chunks(), parse_fragment(), parse_MP4DecConfigDescrTag(), parse_picture(), process_ipmovie_chunk(), qcp_read_header(), r3d_read_red1(), read_apic(), read_chapter(), read_file(), read_frame(), read_geobtag(), read_header(), read_kuki_chunk(), read_packet(), read_part_of_packet(), read_table(), read_whole_file(), rl2_read_header(), rm_assemble_video_frame(), rm_read_audio_stream_info(), rm_read_extradata(), roq_read_header(), roq_read_packet(), seq_fill_buffer(), seq_read_packet(), siff_read_packet(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), sox_read_header(), str_read_header(), str_read_packet(), swf_probe(), swf_read_packet(), sync(), tak_read_header(), thp_read_header(), tta_read_header(), vc1t_read_header(), vid_read_packet(), vivo_read_header(), vmd_read_header(), vmd_read_packet(), vqf_read_header(), vqf_read_packet(), 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(), yop_read_header(), and yop_read_packet().

unsigned int avio_rl16 ( AVIOContext s)

Definition at line 563 of file aviobuf.c.

Referenced by ape_read_header(), asf_build_simple_index(), asf_read_content_desc(), asf_read_ext_content_desc(), asf_read_ext_stream_properties(), asf_read_frame_header(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), asf_read_stream_properties(), avi_read_header(), avi_read_nikon(), avi_sync(), avio_rl24(), avio_rl32(), avio_tell(), avs_read_header(), avs_read_packet(), cin_read_file_header(), cin_read_frame_header(), decode_str(), dfa_read_header(), ff_asf_get_packet(), ff_sauce_read(), ff_spdif_read_packet(), ff_voc_get_packet(), ffm2_read_header(), ffm_read_header(), frm_read_header(), get_fourcc(), get_swf_tag(), get_tag(), get_value(), gif_read_ext(), gif_read_header(), ingenient_read_packet(), init_stream(), lvf_read_header(), mpc8_get_chunk_header(), msnwc_tcp_read_packet(), mtv_read_header(), nc_read_packet(), nsv_parse_NSVs_header(), nsv_read_chunk(), pmp_header(), process_video_header_cmv(), process_video_header_mdec(), qcp_read_header(), qt_rtp_parse_packet(), read_braindead_odml_indx(), read_frame(), read_gab2_sub(), read_header(), read_packet(), rl2_read_header(), seq_init_frame_buffers(), seq_parse_frame_data(), siff_parse_soun(), siff_parse_vbv1(), siff_read_packet(), smush_read_header(), sol_read_header(), swf_read_header(), swf_read_packet(), tmv_read_header(), tta_read_header(), vid_read_header(), vid_read_packet(), voc_read_header(), wv_read_block_header(), wv_read_packet(), xa_read_header(), xmv_read_header(), and yop_read_header().

unsigned int avio_rl32 ( AVIOContext s)

Definition at line 579 of file aviobuf.c.

Referenced by aiff_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), asf_build_simple_index(), asf_read_ext_stream_properties(), asf_read_file_properties(), asf_read_frame_header(), asf_read_header(), asf_read_marker(), asf_read_metadata(), asf_read_picture(), asf_read_stream_properties(), ast_read_packet(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_read_nikon(), avio_rl64(), avio_tell(), avs_read_header(), bfi_read_header(), bfi_read_packet(), cin_read_file_header(), cin_read_frame_header(), dfa_read_header(), dxa_read_header(), ea_read_packet(), epaf_read_header(), ff_ape_parse_tag(), ff_asf_get_packet(), ff_mov_read_chan(), ff_mov_read_stsd_entries(), ff_rm_read_mdpr_codecdata(), ff_voc_get_packet(), ffm_read_header(), flac_read_header(), fourxm_read_packet(), get_aiff_header(), get_attachment(), get_codec_data(), get_fourcc(), get_riff(), get_swf_tag(), get_tag(), get_value(), guess_ni_flag(), gxf_header(), gxf_read_index(), idcin_read_header(), idcin_read_packet(), iff_read_header(), ingenient_read_packet(), ircam_read_header(), lvf_read_header(), lvf_read_packet(), mmf_read_header(), mov_read_cmov(), mov_read_custom_metadata(), mov_read_default(), mov_read_dref(), mov_read_glbl(), mov_read_hdlr(), mov_read_meta(), mov_read_sbgp(), mov_read_udta_string(), mov_read_wide(), mpc8_read_header(), mpc_read_header(), mpc_read_packet(), msnwc_tcp_read_packet(), mtv_read_header(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nuv_header(), ogg_read_page(), parse_chunks(), parse_fragment(), parse_legacy_attrib(), 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(), read_atom(), read_braindead_odml_indx(), read_desc_chunk(), read_gab2_sub(), read_header(), read_ints(), read_packet(), read_table(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), rpl_read_packet(), siff_parse_soun(), siff_parse_vbv1(), siff_read_header(), siff_read_packet(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smush_read_header(), sol_read_header(), sox_read_header(), swf_read_header(), swf_read_packet(), tak_read_header(), tmv_read_header(), tta_read_header(), txd_read_packet(), vc1t_read_header(), vc1t_read_packet(), vqf_read_header(), wc3_read_header(), wc3_read_packet(), wv_read_block_header(), wv_read_packet(), xa_read_header(), xmv_fetch_video_packet(), xmv_process_packet_header(), xmv_read_extradata(), xmv_read_header(), and xwma_read_header().

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

fseek() equivalent for AVIOContext.

Returns
new position or AVERROR.

Definition at line 199 of file aviobuf.c.

Referenced by adjust_write_index(), adx_read_header(), aiff_read_header(), aiff_write_trailer(), ape_read_header(), ape_read_packet(), ape_read_seek(), asf_build_simple_index(), asf_read_frame_header(), asf_read_header(), asf_read_pts(), asf_read_seek(), asf_write_header1(), asf_write_trailer(), ast_write_trailer(), av_seek(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_read_packet(), avi_read_seek(), avi_write_counters(), avi_write_ix(), avi_write_trailer(), avio_skip(), avio_tell(), bfi_read_header(), caf_write_trailer(), check(), dv_read_header(), dv_read_seek(), dv_read_timecode(), 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_asf_get_packet(), ff_gen_syncpoint_search(), ff_id3v1_read(), ff_id3v2_finish(), ff_id3v2_parse(), ff_id3v2_read(), ff_pcm_read_seek(), ff_restore_parser_state(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_seek_frame_binary(), ffm2_read_header(), ffm_read_data(), ffm_seek1(), film_read_packet(), find_and_decode_index(), find_any_startcode(), finish_chunk_noindex(), flac_read_header(), flac_write_trailer(), flic_read_header(), flv_data_packet(), flv_read_header(), flv_read_packet(), flv_write_header(), flv_write_packet(), flv_write_trailer(), get_attachment(), 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(), ico_write_trailer(), idcin_read_seek(), iff_read_header(), init_stream(), ipmovie_read_header(), load_ipmovie_packet(), lvf_read_header(), matroska_parse_seekhead_entry(), matroska_read_seek(), matroska_resync(), mkv_write_seekhead(), mkv_write_trailer(), mmf_rate(), mov_read_chapters(), mov_read_default(), mov_read_dref(), mov_read_dvc1(), mov_read_glbl(), mov_read_meta(), mov_read_packet(), mov_read_timecode_track(), mov_write_moof_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_read_header(), mp3_seek(), 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_read_header(), mpegts_resync(), mtv_read_header(), mv_read_packet(), mxf_parse_handle_essence(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_packet_old(), mxf_read_seek(), mxf_seek_to_previous_partition(), mxf_write_footer(), mxf_write_partition(), nsv_parse_NSVf_header(), nsv_read_seek(), nut_read_header(), nuv_read_dts(), ogg_get_length(), ogg_read_page(), ogg_read_timestamp(), ogg_replace_stream(), ogg_restore(), ogg_update_checksum(), oma_read_seek(), parse_fragment(), parse_keyframes_index(), parse_media_type(), parse_mp4_descr(), 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_braindead_odml_indx(), read_frame(), read_header(), read_mfra(), read_packet(), read_seek(), read_tfra(), 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(), seek_frame_byte(), seek_frame_generic(), seq_fill_buffer(), seq_init_frame_buffers(), seq_parse_frame_data(), seq_read_packet(), shift_data(), skip_reserved(), smacker_read_packet(), smjpeg_write_trailer(), sox_write_trailer(), str_read_header(), swf_write_trailer(), tak_read_header(), thp_read_header(), thp_read_packet(), tmv_read_seek(), tta_read_header(), tta_read_seek(), update_size(), updatePacketSize(), updateSize(), vc1test_write_trailer(), vmd_read_header(), vmd_read_packet(), vqf_read_seek(), wc3_read_header(), wc3_read_packet(), write_fragments(), write_hint_packets(), write_root_table(), write_stream_codec_info(), write_trailer(), wsvqa_read_header(), wtvfile_open_sector(), wtvfile_read_packet(), wtvfile_seek(), wv_read_block_header(), wv_read_header(), wv_read_seek(), xmv_fetch_audio_packet(), xmv_fetch_new_packet(), xmv_fetch_video_packet(), yop_read_header(), and yop_read_seek().

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
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 866 of file aviobuf.c.

Referenced by asf_read_seek(), and flv_read_seek().

int64_t avio_skip ( AVIOContext s,
int64_t  offset 
)

Skip given number of bytes forward.

Returns
new position or AVERROR.

Definition at line 256 of file aviobuf.c.

Referenced by aea_read_header(), afc_read_header(), aiff_read_header(), amf_get_string(), amf_parse_object(), ape_read_header(), asf_build_simple_index(), asf_read_content_desc(), 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_stream_properties(), 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_ix(), avi_write_trailer(), avr_read_header(), avs_read_header(), avs_read_packet(), bfi_read_header(), cdata_read_header(), cdxl_read_packet(), decode_frame(), dfa_read_header(), dfa_read_packet(), dtshd_read_header(), dxa_read_header(), ea_read_packet(), ebml_parse_elem(), epaf_read_header(), ff_asf_parse_packet(), ff_id3v2_parse(), ff_mov_read_chan(), ff_mov_read_stsd_entries(), ff_mp4_parse_es_descr(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_spdif_read_packet(), ff_voc_get_packet(), flac_read_header(), flic_read_packet(), flv_read_header(), flv_read_packet(), flv_set_video_codec(), flv_write_header(), fourxm_read_header(), fourxm_read_packet(), frm_read_header(), get_aiff_header(), get_codec_data(), get_dts(), get_meta(), get_packet_header(), get_tag(), gif_read_ext(), gif_read_packet(), gif_skip_subblocks(), gxf_header(), gxf_material_tags(), gxf_packet(), gxf_read_index(), gxf_track_tags(), ico_write_header(), idcin_read_packet(), iff_read_header(), ingenient_read_packet(), init_stream(), ircam_read_header(), lmlm4_read_packet(), lvf_read_header(), lvf_read_packet(), lxf_read_header(), matroska_read_header(), mmf_read_header(), mov_read_chan(), mov_read_covr(), mov_read_custom_metadata(), mov_read_default(), mov_read_dref(), mov_read_mvhd(), mov_read_strf(), mov_read_wave(), mov_read_wide(), mov_write_header(), mp3_parse_vbr_tags(), mpc8_handle_chunk(), mpc8_read_header(), mpegps_psm_parse(), mpegps_read_dts(), mpegps_read_packet(), mpegps_read_pes_header(), msnwc_tcp_read_packet(), mtv_read_header(), mtv_read_packet(), mv_read_header(), mv_read_packet(), mxf_decrypt_triplet(), mxf_read_content_storage(), mxf_read_generic_descriptor(), mxf_read_header(), mxf_read_index_entry_array(), mxf_read_material_package(), mxf_read_packet_old(), mxf_read_partition_pack(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_source_package(), nc_read_packet(), nist_read_header(), nsv_read_chunk(), nut_read_packet(), nuv_header(), nuv_packet(), nuv_read_dts(), ogg_read_page(), ogg_replace_stream(), parse_chunks(), parse_global_var(), parse_media_type(), parse_picture(), parse_video_var(), parse_videoinfoheader2(), pmp_header(), pmp_packet(), 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_gab2_sub(), read_header(), read_index(), read_kuki_chunk(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_table(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_header(), rm_read_index(), roq_read_packet(), rpl_read_packet(), siff_parse_soun(), siff_parse_vbv1(), siff_read_header(), smjpeg_read_header(), smush_read_header(), smush_read_packet(), sol_read_header(), sox_read_header(), swf_read_header(), swf_read_packet(), sync(), tak_read_header(), tmv_read_packet(), tta_read_header(), txd_read_packet(), var_read_string(), vc1t_read_header(), vid_read_header(), vivo_read_header(), vivo_read_packet(), voc_read_header(), vqf_read_header(), wc3_read_header(), wc3_read_packet(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_block_header(), wv_read_header(), xa_read_header(), xmv_read_header(), xwma_read_header(), yop_read_header(), and yop_read_packet().

void avio_w8 ( AVIOContext s,
int  b 
)

Definition at line 151 of file aviobuf.c.

Referenced by aiff_write_trailer(), asf_write_header1(), ass_get_duration(), avi_write_header(), avi_write_ix(), avi_write_packet(), avio_put_str(), avio_wb16(), avio_wb24(), avio_wb32(), avio_wl16(), avio_wl24(), avio_wl32(), caf_write_header(), decode_str(), ff_id3v2_start(), ff_id3v2_write_apic(), ff_isom_write_avcc(), ff_put_v(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_punch_packets(), ff_rtp_send_rtcp_feedback(), ffm_write_header(), flac_write_block_padding(), flush_packet(), flv_write_header(), flv_write_packet(), get_line(), gif_image_write_header(), gif_write_trailer(), gxf_write_map_packet(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_mpeg_auxiliary(), gxf_write_packet_header(), gxf_write_padding(), gxf_write_track_description(), gxf_write_umf_media_description(), gxf_write_umf_packet(), h263_handle_packet(), ico_write_packet(), ico_write_trailer(), id3v2_put_size(), id3v2_put_ttag(), klv_encode_ber4_length(), klv_encode_ber_length(), mkv_write_block(), mmf_rate(), mov_create_chapter_track(), mov_write_3gp_udta_tag(), mov_write_amr_tag(), mov_write_chan_tag(), mov_write_chpl_tag(), mov_write_d263_tag(), mov_write_edts_tag(), mov_write_esds_tag(), mov_write_hdlr_tag(), mov_write_int8_metadata(), mov_write_iods_tag(), mov_write_itunes_hdlr_tag(), mov_write_mdhd_tag(), mov_write_mvhd_tag(), mov_write_tcmi_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_traf_tag(), mov_write_trailer(), mov_write_trun_tag(), mov_write_video_tag(), mp3_update_xing(), mp3_write_xing(), mxf_write_cdci_common(), mxf_write_d10_audio_packet(), mxf_write_d10_video_packet(), mxf_write_generic_sound_common(), mxf_write_index_table_segment(), mxf_write_klv_fill(), mxf_write_mpegvideo_desc(), mxf_write_system_item(), mxf_write_timecode_component(), mxf_write_umid(), nut_write_header(), nut_write_packet(), ogg_write_page(), oma_write_header(), output_immediate(), output_match(), print_csv_escaped_str(), put_amf_bool(), put_amf_double(), put_avc_eos_tag(), put_descr(), put_ebml_id(), put_ebml_num(), put_ebml_size_unknown(), put_ebml_uint(), put_ebml_void(), put_id3v2_tags(), put_meta(), put_padding_packet(), put_payload_header(), put_payload_parsing_info(), put_str(), put_str8(), put_timestamp(), put_vcd_padding_sector(), put_xiph_codecpriv(), put_xiph_size(), read_file(), rm_write_video(), rtcp_send_sr(), rv10_write_header(), smjpeg_write_header(), swf_write_header(), swf_write_video(), vc1test_write_header(), voc_write_packet(), voc_write_trailer(), write_escape_str(), write_header(), write_packet(), write_packet_header(), write_pad(), write_streamheader(), write_table_entries_attrib(), write_tags(), and write_trailer().

void avio_wb16 ( AVIOContext s,
unsigned int  val 
)

Definition at line 373 of file aviobuf.c.

Referenced by aiff_write_header(), ascii_to_wc(), ass_get_duration(), ast_write_header(), ast_write_trailer(), avio_wb24(), caf_write_header(), daud_write_packet(), ff_id3v2_write_apic(), ff_isom_write_avcc(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_punch_packets(), ff_rtp_send_rtcp_feedback(), ffm_write_header(), 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(), id3v2_put_ttag(), mkv_write_block(), mov_create_chapter_track(), mov_write_3gp_udta_tag(), mov_write_amr_tag(), mov_write_audio_tag(), mov_write_enda_tag(), mov_write_enda_tag_be(), mov_write_esds_tag(), mov_write_fiel_tag(), mov_write_gmhd_tag(), mov_write_hmhd_tag(), mov_write_iods_tag(), mov_write_mdhd_tag(), mov_write_mvhd_tag(), mov_write_psp_udta_tag(), mov_write_rtp_tag(), mov_write_smhd_tag(), mov_write_string_data_tag(), mov_write_subtitle_tag(), mov_write_tcmi_tag(), mov_write_tkhd_tag(), mov_write_tmpo_tag(), mov_write_trkn_tag(), mov_write_uuidprof_tag(), mov_write_uuidusmt_tag(), mov_write_video_tag(), mxf_write_local_tag(), mxf_write_local_tag_utf16(), 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_timestamp(), rm_write_video(), rso_write_header(), rso_write_trailer(), rtcp_send_sr(), rv10_write_header(), smjpeg_write_header(), spdif_put_16(), updateSize(), write_hint_packets(), write_packet_header(), and write_trailer().

void avio_wb32 ( AVIOContext s,
unsigned int  val 
)

Definition at line 299 of file aviobuf.c.

Referenced by aiff_write_header(), aiff_write_trailer(), ast_write_header(), ast_write_packet(), ast_write_trailer(), avio_wb64(), caf_write_header(), caf_write_trailer(), copy_tag(), ff_avc_parse_nal_units(), ff_id3v2_start(), ff_id3v2_write_apic(), ff_mov_write_chan(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ff_rtp_send_punch_packets(), ff_rtp_send_rtcp_feedback(), ffm_write_header(), flush_packet(), 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_media_dv(), gxf_write_umf_packet(), id3v2_put_ttag(), mmf_rate(), mov_create_chapter_track(), mov_flush_fragment(), mov_write_3gp_udta_tag(), mov_write_ac3_tag(), mov_write_amr_tag(), mov_write_audio_tag(), mov_write_avcc_tag(), mov_write_avid_tag(), mov_write_chan_tag(), mov_write_chpl_tag(), mov_write_ctts_tag(), mov_write_d263_tag(), mov_write_dinf_tag(), mov_write_dref_tag(), mov_write_dvc1_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_glbl_tag(), mov_write_gmhd_tag(), mov_write_hdlr_tag(), mov_write_hmhd_tag(), mov_write_ilst_tag(), mov_write_int8_metadata(), mov_write_iods_tag(), mov_write_isml_manifest(), mov_write_itunes_hdlr_tag(), mov_write_mdat_tag(), mov_write_mdhd_tag(), mov_write_mdia_tag(), mov_write_meta_tag(), mov_write_mfhd_tag(), mov_write_mfra_tag(), mov_write_minf_tag(), mov_write_moof_tag(), 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_psp_udta_tag(), mov_write_rtp_tag(), mov_write_smhd_tag(), mov_write_stbl_tag(), mov_write_stco_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_tapt_tag(), mov_write_tcmi_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_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_wave_tag(), mov_write_wfex_tag(), mp3_update_xing(), 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_primer_pack(), mxf_write_random_index_pack(), mxf_write_refs_count(), mxf_write_structural_component(), mxf_write_system_item(), mxf_write_track(), mxf_write_wav_common(), ogg_update_checksum(), oma_write_header(), output_match(), put_avc_eos_tag(), put_id3v2_tags(), put_meta(), put_padding_packet(), rm_write_trailer(), rm_write_video(), rtcp_send_sr(), rv10_write_header(), smjpeg_write_header(), smjpeg_write_packet(), smjpeg_write_trailer(), sox_write_header(), swf_write_video(), update_size(), updatePacketSize(), write_header_chunk(), write_hint_packets(), write_matrix(), write_packet_header(), and write_trailer().

void avio_wl24 ( AVIOContext s,
unsigned int  val 
)

Definition at line 379 of file aviobuf.c.

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

void avio_wl32 ( AVIOContext s,
unsigned int  val 
)

Definition at line 291 of file aviobuf.c.

Referenced by aiff_write_header(), asf_write_header1(), asf_write_index(), ast_write_header(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avio_wl64(), caf_write_header(), ff_ape_write(), ffio_wfourcc(), ffm_write_header(), finish_chunk_noindex(), 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_mpeg(), gxf_write_umf_media_timecode(), gxf_write_umf_payload(), ico_write_packet(), ico_write_trailer(), ircam_write_header(), ivf_write_header(), ivf_write_packet(), matroska_read_header(), mov_write_audio_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(), ogg_write_page(), oma_write_header(), put_chunk(), put_id3v2_tags(), put_meta(), put_packet(), put_payload_header(), put_payload_parsing_info(), put_swf_end_tag(), put_swf_tag(), rv10_write_header(), smjpeg_write_header(), smjpeg_write_packet(), smjpeg_write_trailer(), sox_write_header(), swf_write_header(), swf_write_trailer(), vc1test_write_header(), vc1test_write_packet(), voc_write_packet(), write_chunk_header(), write_fat(), write_header(), write_index(), write_metadata_header(), write_packet(), 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(), and write_trailer().

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

Definition at line 173 of file aviobuf.c.

Referenced by a64_write_header(), adts_write_packet(), aiff_write_header(), aiff_write_packet(), asf_write_header1(), asfrtp_parse_packet(), ass_get_duration(), ast_write_packet(), avi_write_packet(), avio_close_dyn_buf(), avio_printf(), avio_put_str(), caf_write_header(), caf_write_packet(), caf_write_trailer(), copy_moof(), copy_tag(), crc_write_trailer(), daud_write_packet(), dump_attachment(), dv_write_packet(), ff_ape_write(), ff_avc_parse_nal_units(), ff_flac_write_header(), ff_id3v2_write_apic(), ff_isom_write_avcc(), ff_mov_write_packet(), ff_put_guid(), ff_raw_write_packet(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_data(), ffm_write_header(), flac_write_block_comment(), flac_write_packet(), flac_write_trailer(), flush_packet(), flv_write_header(), flv_write_packet(), framecrc_write_packet(), get_video_private_data(), gif_image_write_header(), gxf_write_material_data_section(), gxf_write_mpeg_auxiliary(), gxf_write_packet(), gxf_write_track_description(), gxf_write_umf_media_description(), h263_handle_packet(), http_send_data(), ico_write_packet(), id3v2_put_ttag(), ilbc_write_header(), ilbc_write_packet(), ivf_write_header(), ivf_write_packet(), jacosub_write_header(), jpeg_parse_packet(), latm_parse_packet(), latm_write_packet(), main(), matroska_read_header(), md5_finish(), microdvd_write_header(), microdvd_write_packet(), mkv_flush_dynbuf(), mkv_write_block(), mkv_write_codecprivate(), mmf_rate(), mov_flush_fragment(), mov_write_3gp_udta_tag(), mov_write_ac3_tag(), mov_write_chpl_tag(), mov_write_dvc1_tag(), mov_write_esds_tag(), mov_write_extradata_tag(), mov_write_glbl_tag(), mov_write_hdlr_tag(), mov_write_isml_manifest(), mov_write_string_data_tag(), mov_write_subtitle_tag(), mov_write_tcmi_tag(), mov_write_tfrf_tag(), mov_write_tfxd_tag(), mov_write_trailer(), mov_write_udta_sdp(), mov_write_udta_tag(), mov_write_video_tag(), mp3_write_trailer(), mpegts_insert_null_packet(), mpegts_insert_pcr_only(), mpegts_prefix_m2ts_header(), mpegts_write_pes(), mpjpeg_write_header(), mpjpeg_write_packet(), mxf_write_cdci_common(), mxf_write_common_fields(), mxf_write_d10_video_packet(), mxf_write_essence_container_refs(), mxf_write_generic_desc(), mxf_write_index_table_segment(), mxf_write_klv_fill(), mxf_write_metadata_key(), mxf_write_multi_descriptor(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_random_index_pack(), mxf_write_system_item(), mxf_write_track(), mxf_write_umid(), mxf_write_uuid(), nut_write_header(), nut_write_packet(), ogg_write_page(), output_immediate(), print_report(), put_amf_string(), put_ebml_binary(), put_frame(), put_meta(), put_packet(), put_str(), put_str16(), put_swf_matrix(), put_swf_rect(), put_xiph_codecpriv(), read_file(), rm_write_audio(), rm_write_video(), roq_write_header(), rso_write_packet(), rtcp_send_sr(), rtsp_cmd_describe(), rv10_write_header(), section_write_packet(), shift_data(), smjpeg_write_header(), smjpeg_write_packet(), sox_write_header(), spdif_write_packet(), srt_write_packet(), svq3_parse_packet(), swf_write_header(), swf_write_video(), vc1test_write_header(), vc1test_write_packet(), voc_write_header(), voc_write_packet(), vp8_handle_packet(), write_chapter(), write_globalinfo(), write_header(), write_header_chunk(), write_hint_packets(), write_mainheader(), write_packet(), write_root_table(), write_streamheader(), write_streaminfo(), write_table0_header_legacy_attrib(), write_table_entries_attrib(), write_trailer(), and xiph_handle_packet().

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

Definition at line 940 of file aviobuf.c.

Referenced by url_open_dyn_buf_internal().

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

Definition at line 895 of file aviobuf.c.

Referenced by dyn_packet_buf_write(), and url_open_dyn_buf_internal().

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

Definition at line 925 of file aviobuf.c.

Referenced by url_open_dyn_buf_internal().

unsigned long ff_crc04C11DB7_update ( unsigned long  checksum,
const uint8_t buf,
unsigned int  len 
)
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 618 of file aviobuf.c.

Referenced by aqt_read_header(), concat_read_header(), jacosub_read_header(), microdvd_read_header(), mpl2_read_header(), mpsub_read_header(), nist_read_header(), pjs_read_header(), pvf_read_header(), read_chomp_line(), subviewer1_read_header(), subviewer_read_header(), and vplayer_read_header().

int ff_get_v_length ( uint64_t  val)

Get the length in bytes which is needed to store val as v.

Definition at line 335 of file aviobuf.c.

Referenced by ff_put_v(), and nut_write_packet().

void ff_put_v ( AVIOContext bc,
uint64_t  val 
)

Put val using a variable number of bytes.

Definition at line 345 of file aviobuf.c.

Referenced by nut_write_packet(), put_packet(), put_s(), put_str(), put_tt(), write_chapter(), write_globalinfo(), write_index(), write_mainheader(), write_streamheader(), and write_streaminfo().

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 694 of file aviobuf.c.

Referenced by avio_open2(), ff_rtp_chain_mux_open(), and ffio_wfourcc().

void ffio_fill ( AVIOContext s,
int  b,
int  count 
)
void ffio_init_checksum ( AVIOContext s,
unsigned long(*)(unsigned long c, const uint8_t *p, unsigned int len update_checksum,
unsigned long  checksum 
)
int ffio_init_context ( AVIOContext s,
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 
)
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 981 of file aviobuf.c.

Referenced by ff_mov_add_hinted_packet(), ff_rtp_chain_mux_open(), ffio_wfourcc(), http_prepare_data(), rtp_new_av_stream(), and tcp_write_packet().

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

Read size bytes from AVIOContext into buf.

This reads at most 1 packet. If that is not enough fewer bytes will be returned.

Returns
number of bytes read or AVERROR

Definition at line 526 of file aviobuf.c.

Referenced by ff_raw_read_partial_packet(), and ff_rtsp_open_transport_ctx().

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 755 of file aviobuf.c.

Referenced by av_probe_input_buffer(), and ffio_wfourcc().

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

Definition at line 726 of file aviobuf.c.

Referenced by build_feed_streams(), ffio_wfourcc(), ffm_read_data(), fill_buffer(), and open_input_stream().

static const AVClass* ffio_url_child_class_next ( const AVClass prev)
static

Definition at line 50 of file aviobuf.c.

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

Definition at line 44 of file aviobuf.c.

static void fill_buffer ( AVIOContext s)
static

Definition at line 393 of file aviobuf.c.

Referenced by avio_r8(), avio_read(), avio_seek(), ffio_read_partial(), and url_feof().

static void flush_buffer ( AVIOContext s)
static

Definition at line 138 of file aviobuf.c.

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

int url_feof ( AVIOContext s)

feof() equivalent for AVIOContext.

Returns
non zero if and only if end of file

Definition at line 280 of file aviobuf.c.

Referenced by amr_read_packet(), ape_read_packet(), aqt_read_header(), asf_build_simple_index(), asf_read_header(), ast_read_packet(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_sync(), avio_read(), avio_tell(), bfi_read_packet(), cdxl_read_packet(), cin_read_frame_header(), daud_packet(), dtshd_read_header(), dv_read_header(), dxa_read_header(), dxa_read_packet(), ebml_read_num(), ff_asf_get_packet(), ff_asf_parse_packet(), ff_spdif_read_packet(), ffio_read_partial(), ffm2_read_header(), ffm_resync(), find_any_startcode(), find_next_start_code(), flac_read_header(), flv_read_packet(), fourxm_read_packet(), get_codec_data(), get_line(), get_swf_tag(), get_tag(), gif_read_packet(), gxf_packet(), hls_read_packet(), idcin_read_packet(), iff_read_header(), img_read_packet(), ipmovie_read_header(), jacosub_read_header(), lvf_read_header(), lvf_read_packet(), matroska_resync(), microdvd_read_header(), mmf_read_packet(), mov_read_default(), mov_read_dref(), mov_read_packet(), mpc8_read_header(), mpc8_read_packet(), mpegps_read_pes_header(), mpegts_resync(), mpl2_read_header(), mpsub_read_header(), msnwc_tcp_read_header(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet_old(), mxf_read_sync(), mxg_read_packet(), nc_read_packet(), nist_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_chunks(), parse_legacy_attrib(), parse_playlist(), pjs_read_header(), pmp_header(), pmp_packet(), process_audio_header_elements(), process_ipmovie_chunk(), qcp_read_packet(), read_braindead_odml_indx(), read_header(), read_line(), read_packet(), read_thread(), realtext_read_header(), resync(), rm_read_header(), rm_read_packet(), roq_read_packet(), sami_read_header(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smush_read_header(), smush_read_packet(), sol_read_packet(), srt_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sync(), tak_read_header(), tmv_read_packet(), txd_read_packet(), vc1t_read_packet(), vid_read_packet(), vivo_get_packet_header(), vivo_read_packet(), vplayer_read_header(), wc3_read_header(), wc3_read_packet(), wtvfile_read_packet(), and wv_read_packet().

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

Definition at line 954 of file aviobuf.c.

Referenced by avio_open_dyn_buf(), and ffio_open_dyn_packet_buf().

static int url_resetbuf ( AVIOContext s,
int  flags 
)
static

Definition at line 741 of file aviobuf.c.

Referenced by ffio_init_context(), and ffio_set_buf_size().

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

Definition at line 126 of file aviobuf.c.

Referenced by avio_write(), and flush_buffer().

Variable Documentation

const AVClass ffio_url_class
Initial value:
= {
.class_name = "AVIOContext",
.item_name = av_default_item_name,
.option = ffio_url_options,
.child_next = ffio_url_child_next,
.child_class_next = ffio_url_child_class_next,
}
av_default_item_name
static const AVOption ffio_url_options[]
Definition: aviobuf.c:55
static const AVClass * ffio_url_child_class_next(const AVClass *prev)
Definition: aviobuf.c:50
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
static void * ffio_url_child_next(void *obj, void *prev)
Definition: aviobuf.c:44

Definition at line 59 of file aviobuf.c.

Referenced by ffio_fdopen(), and format_child_class_next().

const AVOption ffio_url_options[]
static
Initial value:
= {
{ NULL },
}
NULL
Definition: eval.c:55

Definition at line 55 of file aviobuf.c.