libavformat/avio.h File Reference

unbuffered I/O operations More...

#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/log.h"
#include "libavformat/version.h"

Go to the source code of this file.

Data Structures

struct  URLContext
 URL Context. More...
struct  URLPollEntry
struct  URLProtocol
struct  AVIOContext
 Bytestream IO Context. More...

Defines

#define URL_RDONLY   0
 read-only
#define URL_WRONLY   1
 write-only
#define URL_RDWR   2
 read-write
#define URL_FLAG_NONBLOCK   4
 Use non-blocking mode.
#define AVSEEK_SIZE   0x10000
 Passing this as the "whence" parameter to a seek function causes it to return the filesize without seeking anywhere.
#define AVSEEK_FORCE   0x20000
 Oring this flag as into the "whence" parameter to a seek function causes it to seek by any means (like reopening and linear reading) or other normally unreasonble means that can be extreemly slow.
#define URL_PROTOCOL_FLAG_NESTED_SCHEME   1
#define URL_EOF   (-1)
#define avio_skip(s, offset)   avio_seek(s, offset, SEEK_CUR)
 Skip given number of bytes forward.
#define avio_tell(s)   avio_seek((s), 0, SEEK_CUR)
 ftell() equivalent for AVIOContext.

Typedefs

typedef int URLInterruptCB (void)
typedef attribute_deprecated
AVIOContext 
ByteIOContext

Functions

int url_open_protocol (URLContext **puc, struct URLProtocol *up, const char *url, int flags)
 Create a URLContext for accessing to the resource indicated by url, and open it using the URLProtocol up.
int url_alloc (URLContext **h, const char *url, int flags)
 Create a URLContext for accessing to the resource indicated by url, but do not initiate the connection yet.
int url_connect (URLContext *h)
 Connect an URLContext that has been allocated by url_alloc.
int url_open (URLContext **h, const char *url, int flags)
 Create an URLContext for accessing to the resource indicated by url, and open it.
int url_read (URLContext *h, unsigned char *buf, int size)
 Read up to size bytes from the resource accessed by h, and store the read bytes in buf.
int url_read_complete (URLContext *h, unsigned char *buf, int size)
 Read as many bytes as possible (up to size), calling the read function multiple times if necessary.
int url_write (URLContext *h, const unsigned char *buf, int size)
 Write size bytes from buf to the resource accessed by h.
int64_t url_seek (URLContext *h, int64_t pos, int whence)
 Change the position that will be used by the next read/write operation on the resource accessed by h.
int url_close (URLContext *h)
 Close the resource accessed by the URLContext h, and free the memory used by it.
int url_exist (const char *url)
 Return a non-zero value if the resource indicated by url exists, 0 otherwise.
int64_t url_filesize (URLContext *h)
 Return the filesize of the resource accessed by h, AVERROR(ENOSYS) if the operation is not supported by h, or another negative value corresponding to an AVERROR error code in case of failure.
int url_get_file_handle (URLContext *h)
 Return the file descriptor associated with this URL.
int url_get_max_packet_size (URLContext *h)
 Return the maximum packet size associated to packetized file handle.
void url_get_filename (URLContext *h, char *buf, int buf_size)
 Copy the filename of the resource accessed by h to buf.
void url_set_interrupt_cb (URLInterruptCB *interrupt_cb)
 The callback is called in blocking functions to test regulary if asynchronous interruption is needed.
int url_poll (URLPollEntry *poll_table, int n, int timeout)
int av_url_read_pause (URLContext *h, int pause)
 Pause and resume playing - only meaningful if using a network streaming protocol (e.g.
int64_t av_url_read_seek (URLContext *h, int stream_index, int64_t timestamp, int flags)
 Seek to a given timestamp relative to some component stream.
URLProtocolav_protocol_next (URLProtocol *p)
 If protocol is NULL, returns the first registered protocol, if protocol is non-NULL, returns the next registered protocol after protocol, or NULL if protocol is the last one.
attribute_deprecated int register_protocol (URLProtocol *protocol)
attribute_deprecated int av_register_protocol (URLProtocol *protocol)
int av_register_protocol2 (URLProtocol *protocol, int size)
 Register the URLProtocol protocol.
attribute_deprecated int init_put_byte (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))
attribute_deprecated AVIOContextav_alloc_put_byte (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))
attribute_deprecated int get_buffer (AVIOContext *s, unsigned char *buf, int size)
attribute_deprecated int get_partial_buffer (AVIOContext *s, unsigned char *buf, int size)
attribute_deprecated int get_byte (AVIOContext *s)
attribute_deprecated unsigned int get_le16 (AVIOContext *s)
attribute_deprecated unsigned int get_le24 (AVIOContext *s)
attribute_deprecated unsigned int get_le32 (AVIOContext *s)
attribute_deprecated uint64_t get_le64 (AVIOContext *s)
attribute_deprecated unsigned int get_be16 (AVIOContext *s)
attribute_deprecated unsigned int get_be24 (AVIOContext *s)
attribute_deprecated unsigned int get_be32 (AVIOContext *s)
attribute_deprecated uint64_t get_be64 (AVIOContext *s)
attribute_deprecated void put_byte (AVIOContext *s, int b)
attribute_deprecated void put_nbyte (AVIOContext *s, int b, int count)
attribute_deprecated void put_buffer (AVIOContext *s, const unsigned char *buf, int size)
attribute_deprecated void put_le64 (AVIOContext *s, uint64_t val)
attribute_deprecated void put_be64 (AVIOContext *s, uint64_t val)
attribute_deprecated void put_le32 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_be32 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_le24 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_be24 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_le16 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_be16 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_tag (AVIOContext *s, const char *tag)
attribute_deprecated int url_fopen (AVIOContext **s, const char *url, int flags)
attribute_deprecated int url_fclose (AVIOContext *s)
attribute_deprecated int64_t url_fseek (AVIOContext *s, int64_t offset, int whence)
attribute_deprecated int url_fskip (AVIOContext *s, int64_t offset)
attribute_deprecated int64_t url_ftell (AVIOContext *s)
attribute_deprecated int64_t url_fsize (AVIOContext *s)
attribute_deprecated int url_fgetc (AVIOContext *s)
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))
void avio_w8 (AVIOContext *s, int b)
void avio_write (AVIOContext *s, const unsigned char *buf, int size)
void avio_wl64 (AVIOContext *s, uint64_t val)
void avio_wb64 (AVIOContext *s, uint64_t val)
void avio_wl32 (AVIOContext *s, unsigned int val)
void avio_wb32 (AVIOContext *s, unsigned int val)
void avio_wl24 (AVIOContext *s, unsigned int val)
void avio_wb24 (AVIOContext *s, unsigned int val)
void avio_wl16 (AVIOContext *s, unsigned int val)
void avio_wb16 (AVIOContext *s, unsigned int val)
attribute_deprecated void put_strz (AVIOContext *s, const char *buf)
int avio_put_str (AVIOContext *s, const char *str)
 Write a NULL-terminated string.
int avio_put_str16le (AVIOContext *s, const char *str)
 Convert an UTF-8 string to UTF-16LE and write it.
int64_t avio_seek (AVIOContext *s, int64_t offset, int whence)
 fseek() equivalent for AVIOContext.
int64_t avio_size (AVIOContext *s)
 Get the filesize.
int url_feof (AVIOContext *s)
 feof() equivalent for AVIOContext.
int url_ferror (AVIOContext *s)
int av_url_read_fpause (AVIOContext *h, int pause)
int64_t av_url_read_fseek (AVIOContext *h, int stream_index, int64_t timestamp, int flags)
int url_fprintf (AVIOContext *s, const char *fmt,...)
attribute_deprecated char * url_fgets (AVIOContext *s, char *buf, int buf_size)
void put_flush_packet (AVIOContext *s)
int avio_read (AVIOContext *s, unsigned char *buf, int size)
 Read size bytes from AVIOContext into buf.
int avio_r8 (AVIOContext *s)
unsigned int avio_rl16 (AVIOContext *s)
unsigned int avio_rl24 (AVIOContext *s)
unsigned int avio_rl32 (AVIOContext *s)
uint64_t avio_rl64 (AVIOContext *s)
int avio_get_str (AVIOContext *pb, int maxlen, char *buf, int buflen)
 Read a string from pb into buf.
int avio_get_str16le (AVIOContext *pb, int maxlen, char *buf, int buflen)
 Read a UTF-16 string from pb and convert it to UTF-8.
int avio_get_str16be (AVIOContext *pb, int maxlen, char *buf, int buflen)
attribute_deprecated char * get_strz (AVIOContext *s, char *buf, int maxlen)
unsigned int avio_rb16 (AVIOContext *s)
unsigned int avio_rb24 (AVIOContext *s)
unsigned int avio_rb32 (AVIOContext *s)
uint64_t avio_rb64 (AVIOContext *s)
uint64_t ff_get_v (AVIOContext *bc)
static int url_is_streamed (AVIOContext *s)
int url_fdopen (AVIOContext **s, URLContext *h)
 Create and initialize a AVIOContext for accessing the resource referenced by the URLContext h.
int url_setbufsize (AVIOContext *s, int buf_size)
int url_resetbuf (AVIOContext *s, int flags)
 Reset the buffer for reading or writing.
int avio_open (AVIOContext **s, const char *url, int flags)
 Create and initialize a AVIOContext for accessing the resource indicated by url.
int avio_close (AVIOContext *s)
URLContexturl_fileno (AVIOContext *s)
attribute_deprecated int url_fget_max_packet_size (AVIOContext *s)
int url_open_buf (AVIOContext **s, uint8_t *buf, int buf_size, int flags)
int url_close_buf (AVIOContext *s)
 return the written or read size
int url_open_dyn_buf (AVIOContext **s)
 Open a write only memory stream.
int url_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'.
int url_close_dyn_buf (AVIOContext *s, uint8_t **pbuffer)
 Return the written size and a pointer to the buffer.
unsigned long ff_crc04C11DB7_update (unsigned long checksum, const uint8_t *buf, unsigned int len)
unsigned long get_checksum (AVIOContext *s)
void init_checksum (AVIOContext *s, unsigned long(*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum)
int udp_set_remote_url (URLContext *h, const char *uri)
 If no filename is given to av_open_input_file because you want to get the local port first, then you must call this function to set the remote server address.
int udp_get_local_port (URLContext *h)
 Return the local port used by the UDP connection.
int udp_get_file_handle (URLContext *h)
 Return the udp file handle for select() usage to wait for several RTP streams at the same time.

Variables

URLProtocolfirst_protocol
URLInterruptCBurl_interrupt_cb


Detailed Description

unbuffered I/O operations

Warning:
This file has to be considered an internal but installed header, so it should not be directly included in your projects.

Definition in file avio.h.


Define Documentation

#define avio_skip ( s,
offset   )     avio_seek(s, offset, SEEK_CUR)

Skip given number of bytes forward.

Returns:
new position or AVERROR.

Definition at line 483 of file avio.h.

#define avio_tell (  )     avio_seek((s), 0, SEEK_CUR)

ftell() equivalent for AVIOContext.

Returns:
position or AVERROR.

Definition at line 489 of file avio.h.

Referenced by adjust_write_index(), aiff_read_header(), aiff_read_packet(), aiff_write_header(), aiff_write_trailer(), amf_parse_object(), amr_read_packet(), asf_build_simple_index(), asf_read_header(), asf_read_stream_properties(), asf_write_header1(), asf_write_trailer(), asfrtp_parse_packet(), av_find_stream_info(), av_get_packet(), av_open_input_stream(), avi_load_index(), avi_read_header(), avi_read_info(), avi_read_nikon(), avi_write_counters(), avi_write_header(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avs_read_audio_packet(), decode_frame(), decode_frame_header(), decode_info_header(), decode_main_header(), decode_stream_header(), decode_syncpoint(), dv_read_header(), dxa_read_header(), dxa_read_packet(), ebml_level_end(), ebml_parse_elem(), ebml_read_binary(), ebml_read_master(), ebml_read_num(), end_ebml_master(), end_header(), event_loop(), ff_asf_get_packet(), ff_asf_parse_packet(), ff_id3v2_parse(), ff_id3v2_read(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_raw_read_partial_packet(), ff_rm_read_mdpr_codecdata(), ff_store_parser_state(), ff_wms_parse_sdp_a_line(), ffm_is_avail_data(), ffm_read_data(), ffm_read_header(), ffm_read_packet(), ffm_write_header(), film_read_packet(), find_and_decode_index(), find_startcode(), flac_write_trailer(), flic_read_packet(), flush_packet(), flv_read_packet(), flv_write_header(), flv_write_trailer(), fourxm_read_packet(), get_attachment(), get_pcr(), get_riff(), get_tag(), guess_ni_flag(), gxf_read_timestamp(), gxf_resync_media(), gxf_write_eos_packet(), gxf_write_flt_packet(), gxf_write_map_packet(), gxf_write_material_data_section(), gxf_write_packet(), gxf_write_track_description(), gxf_write_track_description_section(), gxf_write_trailer(), gxf_write_umf_media_description(), gxf_write_umf_packet(), gxf_write_umf_track_description(), handle_packet(), iff_read_header(), ingenient_read_packet(), ipmovie_read_header(), iss_read_header(), iss_read_packet(), klv_read_packet(), matroska_execute_seekhead(), matroska_parse_cluster(), mkv_start_seekhead(), mkv_write_ass_blocks(), mkv_write_block(), mkv_write_chapters(), mkv_write_cues(), mkv_write_header(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_seekhead(), mkv_write_tag(), mkv_write_tracks(), mkv_write_trailer(), mov_read_chapters(), mov_read_default(), mov_read_dref(), mov_read_header(), mov_read_moof(), mov_read_packet(), mov_write_3gp_udta_tag(), mov_write_audio_tag(), mov_write_avcc_tag(), mov_write_chpl_tag(), mov_write_dinf_tag(), mov_write_esds_tag(), mov_write_ftyp_tag(), mov_write_hdlr_tag(), mov_write_ilst_tag(), mov_write_mdat_tag(), mov_write_mdia_tag(), mov_write_meta_tag(), mov_write_minf_tag(), mov_write_moov_tag(), mov_write_ms_tag(), mov_write_rtp_tag(), mov_write_stbl_tag(), mov_write_stco_tag(), mov_write_string_tag(), mov_write_stsc_tag(), mov_write_stsd_tag(), mov_write_stss_tag(), mov_write_stsz_tag(), mov_write_subtitle_tag(), mov_write_tapt_tag(), mov_write_trailer(), mov_write_trak_tag(), mov_write_uuidusmt_tag(), mov_write_video_tag(), mov_write_wave_tag(), mp3_read_header(), mpc8_get_chunk_header(), mpc8_handle_chunk(), mpc8_read_header(), mpc8_read_packet(), mpc_read_header(), mpc_read_packet(), mpegps_read_pes_header(), mpegts_raw_read_packet(), mpegts_read_header(), mpegts_read_packet(), mtv_read_packet(), mxf_decrypt_triplet(), mxf_read_local_tags(), mxf_write_d10_video_packet(), mxf_write_footer(), mxf_write_klv_fill(), mxf_write_partition(), mxf_write_random_index_pack(), nsv_parse_NSVf_header(), nsv_resync(), nut_read_header(), nut_read_packet(), nuv_packet(), ogg_read_page(), ogg_read_timestamp(), ogg_save(), ogg_update_checksum(), ogg_write_page(), print_report(), process_ea_header(), process_ipmovie_chunk(), put_ebml_void(), put_header(), put_payload_parsing_info(), put_swf_end_tag(), put_swf_tag(), pva_read_timestamp(), qcp_read_packet(), qt_rtp_parse_packet(), r3d_read_header(), r3d_read_reda(), r3d_read_redv(), rdt_parse_packet(), read_atom(), read_braindead_odml_indx(), read_frame(), read_header(), read_kuki_chunk(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_seek(), rm_assemble_video_frame(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), rm_read_packet(), roq_read_packet(), rso_write_trailer(), skip_reserved(), smacker_read_header(), smacker_read_packet(), sox_write_trailer(), spdif_read_packet(), srt_read_packet(), start_ebml_master(), str_read_packet(), swf_read_packet(), swf_write_header(), swf_write_trailer(), swf_write_video(), sync(), transcode(), tta_read_header(), updatePacketSize(), updateSize(), vmd_read_packet(), voc_get_packet(), vqf_read_packet(), write_hint_packets(), write_packet(), wv_read_block_header(), wv_read_header(), wv_read_seek(), and yop_read_packet().

#define AVSEEK_FORCE   0x20000

Oring this flag as into the "whence" parameter to a seek function causes it to seek by any means (like reopening and linear reading) or other normally unreasonble means that can be extreemly slow.

This may be ignored by the seek code.

Definition at line 282 of file avio.h.

Referenced by avio_seek(), and url_seek().

#define AVSEEK_SIZE   0x10000

Passing this as the "whence" parameter to a seek function causes it to return the filesize without seeking anywhere.

Supporting this is optional. If it is not supported then the seek function will return <0.

Definition at line 173 of file avio.h.

Referenced by avio_size(), http_seek(), url_filesize(), and wtvfile_seek().

#define URL_FLAG_NONBLOCK   4

Use non-blocking mode.

If this flag is set, operations on the context will return AVERROR(EAGAIN) if they can not be performed immediately. If this flag is not set, operations on the context will never return AVERROR(EAGAIN). Note that this flag does not affect the opening/connecting of the context. Connecting a protocol will always block if necessary (e.g. on network protocols) but never hang (e.g. on busy devices). Warning: non-blocking protocols is work-in-progress; this flag may be silently ignored.

Definition at line 91 of file avio.h.

Referenced by retry_transfer_wrapper(), tcp_read(), and tcp_write().

#define URL_PROTOCOL_FLAG_NESTED_SCHEME   1

Definition at line 284 of file avio.h.

Referenced by url_alloc().


Typedef Documentation

Definition at line 366 of file avio.h.

typedef int URLInterruptCB(void)

Definition at line 93 of file avio.h.


Function Documentation

attribute_deprecated AVIOContext* av_alloc_put_byte ( 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 
)

Definition at line 90 of file aviobuf.c.

URLProtocol* av_protocol_next ( URLProtocol p  ) 

If protocol is NULL, returns the first registered protocol, if protocol is non-NULL, returns the next registered protocol after protocol, or NULL if protocol is the last one.

Definition at line 53 of file avio.c.

Referenced by show_protocols().

attribute_deprecated int av_register_protocol ( URLProtocol protocol  ) 

Deprecated:
Use av_register_protocol2() instead.

Definition at line 86 of file avio.c.

int av_register_protocol2 ( URLProtocol protocol,
int  size 
)

Register the URLProtocol protocol.

Parameters:
size the size of the URLProtocol struct referenced

Definition at line 59 of file avio.c.

Referenced by av_register_protocol(), and register_protocol().

int av_url_read_fpause ( AVIOContext h,
int  pause 
)

Definition at line 952 of file aviobuf.c.

Referenced by av_read_pause(), and av_read_play().

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

Definition at line 959 of file aviobuf.c.

Referenced by asf_read_seek(), and flv_read_seek().

int av_url_read_pause ( URLContext h,
int  pause 
)

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

MMS).

Parameters:
pause 1 for pause, 0 for resume

Definition at line 351 of file avio.c.

int64_t av_url_read_seek ( URLContext 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_index The 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 with ENOTSUP.
timestamp timestamp in AVStream.time_base units or if there is no stream specified then in AV_TIME_BASE units.
flags Optional 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 with ENOTSUP if used and not supported.
Returns:
>= 0 on success
See also:
AVInputFormat::read_seek

Definition at line 358 of file avio.c.

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 
)

Definition at line 104 of file aviobuf.c.

Referenced by av_alloc_put_byte(), rdt_parse_packet(), read_gab2_sub(), and wtvfile_open_sector().

int avio_close ( AVIOContext s  ) 

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 707 of file aviobuf.c.

Referenced by ffm_read_header(), get_strz(), mov_read_chapters(), and read_info_chunk().

int avio_get_str16be ( AVIOContext pb,
int  maxlen,
char *  buf,
int  buflen 
)

Referenced by mov_read_chapters().

int avio_get_str16le ( AVIOContext pb,
int  maxlen,
char *  buf,
int  buflen 
)

Read a UTF-16 string from pb and convert it to UTF-8.

The reading will terminate when either a null or invalid character was encountered or maxlen bytes have been read.

Returns:
number of bytes read (is always <= maxlen)

Referenced by asf_read_ext_content_desc(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), get_attachment(), get_tag(), mov_read_chapters(), parse_legacy_attrib(), and read_gab2_sub().

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:
s Used to return the pointer to the created AVIOContext. In case of failure the pointed to value is set to NULL.
flags flags 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 879 of file aviobuf.c.

Referenced by av_open_input_file(), build_feed_streams(), main(), mov_open_dref(), open_variant(), opt_output_file(), parse_playlist(), read_packet(), and url_fopen().

int avio_put_str ( AVIOContext s,
const char *  str 
)

Write a NULL-terminated string.

Returns:
number of bytes written.

Definition at line 380 of file aviobuf.c.

Referenced by avi_write_info_tag(), ffm_write_header(), id3v2_put_ttag(), and put_strz().

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 391 of file aviobuf.c.

Referenced by asf_write_header1(), id3v2_put_ttag(), mms_put_utf16(), and put_str16().

int avio_r8 ( AVIOContext s  ) 

Note:
return 0 if EOF, so you cannot use it if EOF handling is necessary

Definition at line 539 of file aviobuf.c.

Referenced by aea_read_header(), amf_parse_object(), amr_read_packet(), ape_tag_read_field(), asf_read_frame_header(), asf_read_header(), asf_read_language_list(), asf_read_marker(), asf_read_stream_properties(), asfrtp_parse_packet(), avi_read_header(), avio_get_str(), avio_rb16(), avio_rb24(), avio_rl16(), avio_rl24(), avs_read_packet(), bfi_read_packet(), cin_read_file_header(), cin_read_frame_header(), 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_get_v(), ff_id3v2_parse(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_mp4_read_descr(), ff_mp4_read_descr_len(), ff_sauce_read(), ffm_read_header(), ffm_resync(), find_any_startcode(), find_next_start_code(), flv_read_header(), flv_read_metabody(), flv_read_packet(), flv_set_video_codec(), get_attachment(), get_byte(), get_codec_data(), get_line(), get_pts(), get_size(), get_str(), get_str8(), get_strl(), get_token(), gxf_header(), gxf_material_tags(), gxf_packet(), gxf_resync_media(), gxf_track_tags(), iff_read_header(), ipmovie_read_header(), klv_decode_ber_length(), mmf_read_header(), mov_read_chpl(), mov_read_ctts(), mov_read_dref(), mov_read_elst(), mov_read_hdlr(), mov_read_mac_string(), mov_read_mdhd(), mov_read_mvhd(), 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(), mp4_read_iods(), mpc8_read_header(), mpc_read_header(), mpegps_psm_parse(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_resync(), msnwc_tcp_read_header(), mtv_read_header(), mxf_read_pixel_layout(), mxf_read_sync(), nc_read_packet(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_resync(), nut_read_packet(), nuv_header(), ogg_read_page(), parse_chunks(), parse_packet_header(), process_audio_header_eacs(), process_audio_header_elements(), qcp_read_header(), qcp_read_packet(), r3d_read_red1(), r3d_read_reda(), r3d_read_redv(), read_arbitary(), read_braindead_odml_indx(), read_frame(), read_header(), read_line(), read_part_of_packet(), read_ttag(), 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(), sol_read_header(), spdif_read_packet(), swf_read_header(), swf_read_packet(), sync(), tmv_read_header(), url_fgets(), vc1t_read_header(), vc1t_read_packet(), vid_read_packet(), voc_get_packet(), wv_read_block_header(), wv_read_packet(), yop_read_header(), yuv4_read_header(), and yuv4_read_packet().

unsigned int avio_rb16 ( AVIOContext s  ) 

unsigned int avio_rb24 ( AVIOContext s  ) 

unsigned int avio_rb32 ( AVIOContext s  ) 

Definition at line 676 of file aviobuf.c.

Referenced by aiff_read_header(), amf_parse_object(), au_read_header(), avio_rb64(), decode_frame_header(), dv_read_header(), dxa_read_header(), ea_read_packet(), ebml_read_float(), ff_id3v2_parse(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_rm_read_mdpr_codecdata(), 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(), lmlm4_read_packet(), matroska_read_header(), mmf_read_header(), mov_read_chap(), mov_read_chpl(), mov_read_cmov(), mov_read_ctts(), mov_read_default(), mov_read_dref(), mov_read_elst(), mov_read_ftyp(), mov_read_hdlr(), mov_read_mdhd(), mov_read_mvhd(), mov_read_pasp(), 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_tkhd(), mov_read_trex(), mov_read_trun(), mov_read_udta_string(), mov_read_wide(), mp3_parse_vbr_tags(), mpegps_psm_parse(), mxf_read_content_storage(), mxf_read_generic_descriptor(), mxf_read_index_table_segment(), mxf_read_material_package(), mxf_read_primer_pack(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_source_package(), mxf_read_track(), 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(), rdt_load_mdpr(), read_atom(), read_desc_chunk(), read_header(), read_info_chunk(), read_packet(), read_pakt_chunk(), read_part_of_packet(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_header(), rm_read_index(), siff_parse_soun(), siff_parse_vbv1(), sox_read_header(), swf_read_header(), sync(), thp_read_header(), thp_read_packet(), vqf_read_header(), wc3_read_header(), and wc3_read_packet().

uint64_t avio_rb64 ( AVIOContext s  ) 

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 559 of file aviobuf.c.

Referenced by add_metadata(), 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(), asf_read_stream_properties(), av_append_packet(), av_get_packet(), av_probe_input_buffer(), av_read(), avi_read_header(), avi_read_nikon(), avi_read_tag(), avs_read_packet(), avs_read_video_packet(), bfi_read_header(), cin_read_packet(), decode_frame(), decode_main_header(), decode_stream_header(), dv_read_header(), dv_read_packet(), dxa_read_packet(), ebml_read_ascii(), ebml_read_binary(), ff_ape_parse_tag(), ff_asf_parse_packet(), ff_get_guid(), ff_id3v1_read(), ff_id3v2_parse(), ff_id3v2_read(), ff_mp4_read_dec_config_descr(), ff_rm_parse_packet(), ff_sauce_read(), ffm_read_data(), ffm_read_header(), film_read_header(), film_read_packet(), flac_read_header(), flic_read_header(), flic_read_packet(), flv_get_extradata(), fourxm_read_header(), fourxm_read_packet(), get_aiff_header(), get_attachment(), get_buffer(), get_codec_data(), get_meta(), get_metadata(), get_packet_header(), get_pts(), get_riff(), get_str(), get_tag(), idcin_read_header(), idcin_read_packet(), iff_read_header(), iff_read_packet(), ingenient_read_packet(), ipmovie_read_header(), klv_read_packet(), load_ipmovie_packet(), lxf_read_header(), lxf_read_packet(), mmf_read_packet(), mov_read_chpl(), mov_read_cmov(), mov_read_dref(), mov_read_extradata(), mov_read_ftyp(), mov_read_glbl(), mov_read_smi(), mov_read_strf(), mov_read_stsz(), mov_read_udta_string(), mov_read_wave(), mp4_read_iods(), 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_get_d10_aes3_packet(), mxf_read_content_storage(), mxf_read_cryptographic_context(), mxf_read_generic_descriptor(), mxf_read_local_tags(), mxf_read_material_package(), mxf_read_primer_pack(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_source_package(), mxf_read_track(), mxg_update_cache(), nsv_parse_NSVf_header(), nuv_header(), nuv_packet(), ogg_read_page(), oma_read_header(), parse_chunks(), process_ipmovie_chunk(), qcp_read_header(), r3d_read_red1(), read_frame(), read_header(), read_kuki_chunk(), read_packet(), read_part_of_packet(), read_seek(), read_ttag(), 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(), sox_read_header(), spdif_read_packet(), str_read_header(), str_read_packet(), swf_read_packet(), sync(), thp_read_header(), tta_read_header(), vc1t_read_header(), vmd_read_header(), vmd_read_packet(), 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(), yop_read_header(), and yop_read_packet().

unsigned int avio_rl16 ( AVIOContext s  ) 

unsigned int avio_rl24 ( AVIOContext s  ) 

unsigned int avio_rl32 ( AVIOContext s  ) 

Definition at line 645 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_stream_properties(), au_read_header(), avi_load_index(), avi_read_header(), avi_read_idx1(), avi_read_info(), avi_read_nikon(), avio_rl64(), avs_read_header(), bfi_read_header(), bfi_read_packet(), cin_read_file_header(), cin_read_frame_header(), dxa_read_header(), ea_read_packet(), ff_ape_parse_tag(), ff_asf_get_packet(), ff_mov_read_stsd_entries(), ff_rm_read_mdpr_codecdata(), 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(), mmf_read_header(), mov_read_cmov(), mov_read_default(), mov_read_dref(), mov_read_hdlr(), mov_read_meta(), 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_legacy_attrib(), 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_gab2_sub(), read_header(), read_ints(), read_packet(), rl2_read_header(), 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(), sol_read_header(), sox_read_header(), swf_read_header(), tmv_read_header(), tta_read_header(), txd_read_packet(), vc1t_read_header(), vc1t_read_packet(), voc_get_packet(), vqf_read_header(), wc3_read_header(), wc3_read_packet(), wv_read_block_header(), wv_read_packet(), and xa_read_header().

uint64_t avio_rl64 ( AVIOContext s  ) 

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

fseek() equivalent for AVIOContext.

Returns:
new position or AVERROR.

Definition at line 179 of file aviobuf.c.

Referenced by adjust_write_index(), aea_read_header(), aiff_read_header(), aiff_write_trailer(), amf_get_string(), amf_parse_object(), ape_read_header(), ape_read_packet(), 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_pts(), asf_read_seek(), asf_read_stream_properties(), asf_write_header1(), asf_write_trailer(), asfrtp_parse_packet(), au_read_header(), av_estimate_timings_from_pts(), av_seek(), av_seek_frame_binary(), av_seek_frame_byte(), av_seek_frame_generic(), avi_load_index(), avi_read_header(), avi_read_nikon(), avi_read_packet(), avi_read_seek(), avi_write_counters(), avi_write_ix(), avi_write_trailer(), avs_read_header(), avs_read_packet(), bfi_read_header(), cdata_read_header(), decode_frame(), dv_read_header(), dv_read_seek(), dxa_read_header(), dxa_read_packet(), ea_read_packet(), ebml_parse_elem(), efi_read(), end_ebml_master(), end_header(), ff_ape_parse_tag(), ff_asf_get_packet(), ff_asf_parse_packet(), ff_gen_syncpoint_search(), ff_id3v1_read(), ff_id3v2_parse(), ff_id3v2_read(), ff_mov_read_stsd_entries(), ff_restore_parser_state(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ffm_read_data(), ffm_seek1(), film_read_packet(), find_and_decode_index(), find_any_startcode(), flac_read_header(), flac_write_trailer(), flic_read_header(), flic_read_packet(), flv_read_header(), flv_read_packet(), flv_write_header(), flv_write_trailer(), fourxm_read_header(), fourxm_read_packet(), get_aiff_header(), get_attachment(), get_codec_data(), get_dts(), get_meta(), get_packet_header(), get_tag(), guess_ni_flag(), gxf_header(), gxf_material_tags(), gxf_packet(), gxf_read_index(), gxf_read_timestamp(), gxf_resync_media(), gxf_seek(), gxf_track_tags(), gxf_write_trailer(), gxf_write_umf_media_description(), idcin_read_packet(), iff_read_header(), ingenient_read_packet(), ipmovie_read_header(), lmlm4_read_packet(), load_ipmovie_packet(), lxf_read_header(), matroska_execute_seekhead(), matroska_read_header(), matroska_read_seek(), mkv_write_seekhead(), mkv_write_trailer(), mmf_read_header(), mov_read_chapters(), mov_read_default(), mov_read_dref(), mov_read_meta(), mov_read_mvhd(), mov_read_packet(), mov_read_strf(), mov_read_wave(), mov_read_wide(), mov_write_stsc_tag(), mov_write_stss_tag(), mov_write_trailer(), mp3_parse_vbr_tags(), mp3_read_header(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_seek(), mpc_read_header(), mpc_read_packet(), mpegps_psm_parse(), mpegps_read_dts(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_pcr(), mpegts_raw_read_packet(), mpegts_read_header(), mpegts_resync(), msnwc_tcp_read_packet(), mtv_read_header(), mtv_read_packet(), mxf_decrypt_triplet(), mxf_read_content_storage(), mxf_read_generic_descriptor(), mxf_read_header(), mxf_read_local_tags(), mxf_read_material_package(), mxf_read_packet(), mxf_read_seek(), mxf_read_sequence(), mxf_read_source_clip(), mxf_read_source_package(), mxf_write_footer(), mxf_write_partition(), nc_read_packet(), nsv_parse_NSVf_header(), nsv_read_chunk(), nsv_read_seek(), nut_read_header(), nut_read_packet(), nuv_header(), nuv_packet(), ogg_get_length(), ogg_read_timestamp(), ogg_restore(), ogg_update_checksum(), parse_chunks(), parse_media_type(), parse_videoinfoheader2(), pcm_read_seek(), process_audio_header_eacs(), process_ea_header(), process_ipmovie_chunk(), process_video_header_mdec(), process_video_header_vp6(), put_swf_end_tag(), pva_read_timestamp(), qcp_read_header(), qcp_read_packet(), qt_rtp_parse_packet(), r3d_read_header(), r3d_read_packet(), r3d_read_red1(), r3d_read_reos(), r3d_seek(), rdt_load_mdpr(), read_braindead_odml_indx(), read_frame(), read_gab2_sub(), read_header(), read_kuki_chunk(), read_packet(), read_part_of_packet(), read_seek(), rl2_read_header(), rl2_read_packet(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_header(), rm_read_index(), rm_write_trailer(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rso_write_trailer(), seq_fill_buffer(), seq_init_frame_buffers(), seq_parse_frame_data(), seq_read_packet(), siff_parse_soun(), siff_parse_vbv1(), siff_read_header(), skip_reserved(), smacker_read_packet(), sox_read_header(), sox_write_trailer(), spdif_read_packet(), str_read_header(), swf_read_header(), swf_read_packet(), swf_write_trailer(), sync(), thp_read_header(), thp_read_packet(), tmv_read_packet(), tmv_read_seek(), tta_read_header(), tta_read_seek(), txd_read_packet(), updatePacketSize(), updateSize(), url_fseek(), url_fskip(), url_ftell(), vc1t_read_header(), vc1test_write_trailer(), vid_read_header(), vid_read_packet(), vmd_read_header(), vmd_read_packet(), voc_get_packet(), voc_read_header(), vqf_read_header(), vqf_read_seek(), wc3_read_header(), wc3_read_packet(), write_hint_packets(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_open_sector(), wtvfile_read_packet(), wtvfile_seek(), wv_read_block_header(), wv_read_header(), wv_read_seek(), xa_read_header(), yop_read_header(), yop_read_packet(), and yop_read_seek().

int64_t avio_size ( AVIOContext s  ) 

void avio_w8 ( AVIOContext s,
int  b 
)

Definition at line 137 of file aviobuf.c.

Referenced by a64_write_packet(), aiff_write_trailer(), asf_write_header1(), avi_write_header(), avi_write_info_tag(), avi_write_ix(), avi_write_packet(), avio_put_str(), avio_wb16(), avio_wb24(), avio_wb32(), avio_wl16(), avio_wl24(), avio_wl32(), ff_isom_write_avcc(), ff_put_v(), ff_rtp_send_data(), ffm_write_header(), flac_write_block_padding(), flush_packet(), flv_write_header(), flv_write_packet(), gif_image_write_header(), gif_image_write_image(), gif_write_trailer(), gif_write_video(), 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_timecode_auxiliary(), gxf_write_track_description(), gxf_write_umf_media_description(), gxf_write_umf_packet(), id3v2_put_size(), id3v2_put_ttag(), klv_encode_ber4_length(), klv_encode_ber_length(), mkv_write_ass_blocks(), mkv_write_block(), mov_write_3gp_udta_tag(), mov_write_amr_tag(), mov_write_chpl_tag(), mov_write_d263_tag(), mov_write_esds_tag(), mov_write_hdlr_tag(), mov_write_itunes_hdlr_tag(), mov_write_mdhd_tag(), mov_write_mvhd_tag(), mov_write_svq3_tag(), mov_write_tkhd_tag(), mov_write_video_tag(), 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(), ogg_write_page(), output_immediate(), output_match(), put_amf_bool(), put_amf_double(), put_avc_eos_tag(), put_byte(), put_ebml_id(), put_ebml_num(), put_ebml_size_unknown(), put_ebml_uint(), put_ebml_void(), put_padding_packet(), put_payload_header(), put_payload_parsing_info(), put_str(), put_str8(), put_tag(), put_timestamp(), put_vcd_padding_sector(), put_xiph_codecpriv(), put_xiph_size(), putDescr(), rm_write_video(), rtp_check_and_send_back_rr(), rtp_send_punch_packets(), rv10_write_header(), sox_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_streamheader(), write_tags(), and write_trailer().

void avio_wb16 ( AVIOContext s,
unsigned int  val 
)

void avio_wb24 ( AVIOContext s,
unsigned int  val 
)

void avio_wb32 ( AVIOContext s,
unsigned int  val 
)

Definition at line 290 of file aviobuf.c.

Referenced by aiff_write_header(), aiff_write_trailer(), avio_wb64(), ff_avc_parse_nal_units(), ff_rtp_send_data(), ffm_write_header(), flush_packet(), flv_write_header(), flv_write_packet(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_packet_header(), gxf_write_timecode_auxiliary(), gxf_write_track_description(), gxf_write_umf_media_dv(), gxf_write_umf_packet(), id3v2_put_ttag(), 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_chpl_tag(), mov_write_ctts_tag(), mov_write_d263_tag(), mov_write_dinf_tag(), mov_write_dref_tag(), mov_write_edts_tag(), mov_write_enda_tag(), mov_write_esds_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_itunes_hdlr_tag(), mov_write_mdat_tag(), mov_write_mdhd_tag(), mov_write_mdia_tag(), mov_write_meta_tag(), mov_write_minf_tag(), mov_write_moov_tag(), mov_write_ms_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_svq3_tag(), mov_write_tapt_tag(), mov_write_tkhd_tag(), mov_write_trailer(), mov_write_trak_tag(), mov_write_tref_tag(), mov_write_trkn_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(), 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(), output_match(), put_avc_eos_tag(), put_padding_packet(), rm_write_trailer(), rm_write_video(), rtp_check_and_send_back_rr(), rtp_send_punch_packets(), rv10_write_header(), sox_write_header(), swf_write_video(), updatePacketSize(), updateSize(), write_hint_packets(), write_packet_header(), and write_trailer().

void avio_wb64 ( AVIOContext s,
uint64_t  val 
)

void avio_wl16 ( AVIOContext s,
unsigned int  val 
)

void avio_wl24 ( AVIOContext s,
unsigned int  val 
)

Definition at line 450 of file aviobuf.c.

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

void avio_wl32 ( AVIOContext s,
unsigned int  val 
)

void avio_wl64 ( AVIOContext s,
uint64_t  val 
)

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

Definition at line 158 of file aviobuf.c.

Referenced by a64_write_header(), a64_write_packet(), adts_write_packet(), aiff_write_header(), aiff_write_packet(), asf_write_header1(), asfrtp_parse_packet(), avi_write_packet(), avio_put_str(), crc_write_trailer(), daud_write_packet(), dv_write_packet(), ff_avc_parse_nal_units(), ff_flac_write_header(), ff_isom_write_avcc(), ff_mov_write_packet(), ff_raw_write_packet(), 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(), gif_image_write_header(), gif_image_write_image(), gxf_write_material_data_section(), gxf_write_mpeg_auxiliary(), gxf_write_packet(), gxf_write_track_description(), gxf_write_umf_media_description(), http_send_data(), id3v2_put_ttag(), ivf_write_header(), ivf_write_packet(), latm_parse_packet(), matroska_read_header(), md5_finish(), mkv_flush_dynbuf(), mkv_write_ass_blocks(), mkv_write_block(), mkv_write_codecprivate(), mov_write_3gp_udta_tag(), mov_write_ac3_tag(), mov_write_chpl_tag(), mov_write_esds_tag(), mov_write_extradata_tag(), mov_write_glbl_tag(), mov_write_hdlr_tag(), mov_write_string_data_tag(), mov_write_subtitle_tag(), mov_write_udta_sdp(), mov_write_udta_tag(), mov_write_video_tag(), mp3_write_packet(), mp3_write_trailer(), mpegts_insert_null_packet(), mpegts_insert_pcr_only(), 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(), ogg_write_page(), output_immediate(), put_amf_string(), put_buffer(), put_ebml_binary(), put_frame(), put_guid(), put_packet(), put_str(), put_str16(), put_swf_matrix(), put_swf_rect(), put_xiph_codecpriv(), rm_write_audio(), rm_write_video(), roq_write_header(), rso_write_packet(), rtp_check_and_send_back_rr(), rtsp_cmd_describe(), rv10_write_header(), section_write_packet(), sox_write_header(), sox_write_packet(), spdif_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_globalinfo(), write_header(), write_hint_packets(), write_mainheader(), write_packet(), write_streamheader(), write_streaminfo(), write_trailer(), and xiph_handle_packet().

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

Definition at line 514 of file aviobuf.c.

Referenced by get_packetheader(), ogg_write_page(), put_packet(), and write_packet().

uint64_t ff_get_v ( AVIOContext bc  ) 

unsigned long get_checksum ( AVIOContext s  ) 

attribute_deprecated char* get_strz ( AVIOContext s,
char *  buf,
int  maxlen 
)

Deprecated:
use avio_get_str instead

Definition at line 685 of file aviobuf.c.

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

Definition at line 527 of file aviobuf.c.

Referenced by get_packetheader(), ogg_write_page(), put_packet(), and write_packet().

attribute_deprecated int init_put_byte ( 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 
)

Definition at line 78 of file aviobuf.c.

void put_flush_packet ( AVIOContext s  ) 

attribute_deprecated void put_strz ( AVIOContext s,
const char *  buf 
)

Definition at line 299 of file aviobuf.c.

attribute_deprecated int register_protocol ( URLProtocol protocol  ) 

Deprecated:
Use av_register_protocol() instead.

Definition at line 91 of file avio.c.

int udp_get_file_handle ( URLContext h  ) 

Return the udp file handle for select() usage to wait for several RTP streams at the same time.

Parameters:
h media file context

Definition at line 299 of file udp.c.

int udp_get_local_port ( URLContext h  ) 

Return the local port used by the UDP connection.

Parameters:
h media file context
Returns:
the local port number

Definition at line 285 of file udp.c.

Referenced by rtp_get_local_rtcp_port(), rtp_get_local_rtp_port(), and rtp_open().

int udp_set_remote_url ( URLContext h,
const char *  uri 
)

If no filename is given to av_open_input_file because you want to get the local port first, then you must call this function to set the remote server address.

url syntax: udp://host:port[?option=val...] option: 'ttl=n' : set the ttl value (for multicast only) 'localport=n' : set the local port 'pkt_size=n' : set max packet size 'reuse=1' : enable reusing the socket

Parameters:
h media file context
uri of the remote server
Returns:
zero if no error.

Definition at line 246 of file udp.c.

Referenced by rtp_set_remote_url(), and udp_open().

int url_alloc ( URLContext **  h,
const char *  url,
int  flags 
)

Create a URLContext for accessing to the resource indicated by url, but do not initiate the connection yet.

Parameters:
puc pointer to the location where, in case of success, the function puts the pointer to the created URLContext
flags flags 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 175 of file avio.c.

Referenced by mmsh_open(), and url_open().

int url_close ( URLContext h  ) 

int url_close_buf ( AVIOContext s  ) 

return the written or read size

int url_close_dyn_buf ( AVIOContext s,
uint8_t **  pbuffer 
)

int url_connect ( URLContext h  ) 

Connect an URLContext that has been allocated by url_alloc.

Definition at line 139 of file avio.c.

Referenced by mmsh_open(), url_open(), and url_open_protocol().

int url_exist ( const char *  url  ) 

Return a non-zero value if the resource indicated by url exists, 0 otherwise.

Definition at line 297 of file avio.c.

Referenced by build_feed_streams(), find_image_range(), and opt_output_file().

int url_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:
s Used 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 765 of file aviobuf.c.

Referenced by avio_open(), and ff_rtp_chain_mux_open().

int url_feof ( AVIOContext s  ) 

feof() equivalent for AVIOContext.

Returns:
non zero if and only if end of file

Definition at line 268 of file aviobuf.c.

Referenced by amr_read_packet(), ape_read_packet(), applehttp_read_packet(), asf_build_simple_index(), asf_read_header(), avi_load_index(), avi_read_header(), avi_read_idx1(), avio_read(), bfi_read_packet(), cin_read_frame_header(), daud_packet(), decode_thread(), dv_read_header(), dxa_read_header(), dxa_read_packet(), ebml_read_num(), ff_asf_get_packet(), ff_asf_parse_packet(), ffio_read_partial(), 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(), gxf_packet(), idcin_read_packet(), iff_read_header(), ipmovie_read_header(), mmf_read_packet(), mov_read_default(), mov_read_packet(), mpc8_read_header(), mpc8_read_packet(), mpegps_read_pes_header(), mpegts_resync(), msnwc_tcp_read_header(), mxf_read_header(), mxf_read_packet(), mxf_read_sync(), mxg_read_packet(), nc_read_packet(), nsv_parse_NSVf_header(), nsv_read_chunk(), nsv_resync(), nut_read_packet(), nuv_packet(), ogg_read_page(), parse_chunks(), parse_legacy_attrib(), parse_playlist(), process_audio_header_elements(), process_ipmovie_chunk(), qcp_read_packet(), read_braindead_odml_indx(), read_header(), read_packet(), rm_read_header(), rm_read_packet(), roq_read_packet(), smacker_read_packet(), sol_read_packet(), sox_read_packet(), spdif_read_packet(), srt_read_packet(), str_read_packet(), sync(), tmv_read_packet(), txd_read_packet(), url_fgets(), vc1t_read_packet(), vid_read_packet(), wc3_read_header(), wc3_read_packet(), wtvfile_read_packet(), and wv_read_packet().

int url_ferror ( AVIOContext s  ) 

attribute_deprecated int url_fget_max_packet_size ( AVIOContext s  ) 

Deprecated:
use AVIOContext.max_packet_size directly.

Definition at line 946 of file aviobuf.c.

attribute_deprecated char* url_fgets ( AVIOContext s,
char *  buf,
int  buf_size 
)

Note:
unlike fgets, the EOL character is not returned and a whole line is parsed. return NULL if first char read was EOF

Definition at line 925 of file aviobuf.c.

URLContext* url_fileno ( AVIOContext s  ) 

Definition at line 904 of file aviobuf.c.

int64_t url_filesize ( URLContext h  ) 

Return the filesize of the resource accessed by h, AVERROR(ENOSYS) if the operation is not supported by h, or another negative value corresponding to an AVERROR error code in case of failure.

Definition at line 306 of file avio.c.

Referenced by concat_open().

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

int url_get_file_handle ( URLContext h  ) 

Return the file descriptor associated with this URL.

For RTP, this will return only the RTP file descriptor, not the RTCP file descriptor.

Returns:
the file descriptor associated with this URL, or <0 on error.

Definition at line 321 of file avio.c.

Referenced by http_get_file_handle(), rtp_open(), rtsp_write_packet(), sap_fetch_packet(), and sap_write_header().

void url_get_filename ( URLContext h,
char *  buf,
int  buf_size 
)

Copy the filename of the resource accessed by h to buf.

Parameters:
buf_size size in bytes of buf

Definition at line 333 of file avio.c.

int url_get_max_packet_size ( URLContext h  ) 

Return the maximum packet size associated to packetized file handle.

If the file is not packetized (stream like HTTP or file on disk), then 0 is returned.

Parameters:
h file handle
Returns:
maximum packet size in bytes

Definition at line 328 of file avio.c.

Referenced by http_prepare_data(), rtmp_open(), rtp_new_av_stream(), rtp_open(), sap_write_header(), and url_fdopen().

static int url_is_streamed ( AVIOContext s  )  [inline, static]

int url_open ( URLContext **  h,
const char *  url,
int  flags 
)

Create an URLContext for accessing to the resource indicated by url, and open it.

Parameters:
puc pointer to the location where, in case of success, the function puts the pointer to the created URLContext
flags flags 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 203 of file avio.c.

Referenced by applehttp_read(), avio_open(), concat_open(), gopher_open(), http_open_cnx(), md5_close(), mms_open(), rtmp_open(), rtp_new_av_stream(), rtp_open(), sap_read_header(), sap_write_header(), and url_exist().

int url_open_buf ( AVIOContext **  s,
uint8_t *  buf,
int  buf_size,
int  flags 
)

Referenced by http_receive_data().

int url_open_dyn_buf ( AVIOContext **  s  ) 

int url_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:
s new IO context
max_packet_size maximum packet size (must be > 0)
Returns:
zero if no error.

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

int url_open_protocol ( URLContext **  puc,
struct URLProtocol up,
const char *  url,
int  flags 
)

Create a URLContext for accessing to the resource indicated by url, and open it using the URLProtocol up.

Parameters:
puc pointer to the location where, in case of success, the function puts the pointer to the created URLContext
flags flags 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 153 of file avio.c.

int url_poll ( URLPollEntry poll_table,
int  n,
int  timeout 
)

int url_read ( URLContext h,
unsigned char *  buf,
int  size 
)

Read up to size bytes from the resource accessed by h, and store the read bytes in buf.

Returns:
The number of bytes actually read, or a negative value corresponding to an AVERROR code in case of error. A value of zero indicates that it is not possible to read more from the accessed resource (except if the value of the size argument is also zero).

Definition at line 246 of file avio.c.

Referenced by applehttp_read(), concat_read(), ff_rtmp_packet_read(), gopher_read(), http_getc(), http_read(), sap_fetch_packet(), sap_read_header(), and url_fdopen().

int url_read_complete ( URLContext h,
unsigned char *  buf,
int  size 
)

Read as many bytes as possible (up to size), calling the read function multiple times if necessary.

This makes special short-read handling in applications unnecessary, if the return value is < size then it is certain there was either an error or the end of file was reached.

Definition at line 253 of file avio.c.

Referenced by ff_rtmp_packet_read(), ff_rtsp_tcp_read_packet(), get_chunk_header(), get_http_header_data(), get_tcp_server_response(), read_data_packet(), and rtmp_handshake().

int url_resetbuf ( AVIOContext s,
int  flags 
)

Reset the buffer for reading or writing.

Note:
Will drop any data currently in the buffer without transmitting it.
Parameters:
flags URL_RDONLY to set up the buffer for reading, or URL_WRONLY to set up the buffer for writing.

Definition at line 818 of file aviobuf.c.

Referenced by ffio_init_context(), and url_setbufsize().

int64_t url_seek ( URLContext h,
int64_t  pos,
int  whence 
)

Change the position that will be used by the next read/write operation on the resource accessed by h.

Parameters:
pos specifies the new position to set
whence specifies how pos should be interpreted, it must be one of SEEK_SET (seek from the beginning), SEEK_CUR (seek from the current position), SEEK_END (seek from the end), or AVSEEK_SIZE (return the filesize of the requested resource, pos is ignored).
Returns:
a negative value corresponding to an AVERROR code in case of failure, or the resulting file position, measured in bytes from the beginning of the file. You can use this feature together with SEEK_CUR to read the current file position.

Definition at line 271 of file avio.c.

Referenced by concat_read(), concat_seek(), url_connect(), url_fdopen(), and url_filesize().

void url_set_interrupt_cb ( URLInterruptCB interrupt_cb  ) 

The callback is called in blocking functions to test regulary if asynchronous interruption is needed.

AVERROR(EINTR) is returned in this case by the interrupted function. 'NULL' means no interrupt callback is given.

Definition at line 344 of file avio.c.

Referenced by decode_thread(), main(), and transcode().

int url_setbufsize ( AVIOContext s,
int  buf_size 
)

Warning:
must be called before any I/O

Definition at line 802 of file aviobuf.c.

Referenced by av_open_input_file(), and fill_buffer().

int url_write ( URLContext h,
const unsigned char *  buf,
int  size 
)

Write size bytes from buf to the resource accessed by h.

Returns:
the number of bytes actually written, or a negative value corresponding to an AVERROR code in case of failure

Definition at line 260 of file avio.c.

Referenced by ff_rtmp_packet_write(), gopher_write(), http_close(), http_connect(), http_send_data(), http_write(), md5_close(), rtmp_handshake(), rtp_check_and_send_back_rr(), rtp_send_punch_packets(), rtp_write(), sap_write_close(), sap_write_packet(), send_command_packet(), tcp_write_packet(), and url_fdopen().


Variable Documentation

Definition at line 50 of file avio.c.


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