FFmpeg
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#include "libavutil/avstring.h"
#include "libavutil/dict.h"
#include "libavutil/opt.h"
#include "libavutil/time.h"
#include "libavutil/avassert.h"
#include "os_support.h"
#include "avformat.h"
#include "url.h"
Go to the source code of this file.
Macros | |
#define | URL_SCHEME_CHARS |
Functions | |
URLProtocol * | ffurl_protocol_next (const URLProtocol *prev) |
Iterate over all available protocols. More... | |
const char * | avio_enum_protocols (void **opaque, int output) |
Iterate through names of available protocols. More... | |
int | ffurl_register_protocol (URLProtocol *protocol) |
Register the URLProtocol protocol. More... | |
static int | url_alloc_for_protocol (URLContext **puc, struct URLProtocol *up, const char *filename, int flags, const AVIOInterruptCB *int_cb) |
int | ffurl_connect (URLContext *uc, AVDictionary **options) |
Connect an URLContext that has been allocated by ffurl_alloc. More... | |
static struct URLProtocol * | url_find_protocol (const char *filename) |
int | ffurl_alloc (URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb) |
Create a URLContext for accessing to the resource indicated by url, but do not initiate the connection yet. More... | |
int | ffurl_open (URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options) |
Create an URLContext for accessing to the resource indicated by url, and open it. More... | |
static int | retry_transfer_wrapper (URLContext *h, uint8_t *buf, int size, int size_min, int(*transfer_func)(URLContext *h, uint8_t *buf, int size)) |
int | ffurl_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. More... | |
int | ffurl_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. More... | |
int | ffurl_write (URLContext *h, const unsigned char *buf, int size) |
Write size bytes from buf to the resource accessed by h. More... | |
int64_t | ffurl_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. More... | |
int | ffurl_closep (URLContext **hh) |
Close the resource accessed by the URLContext h, and free the memory used by it. More... | |
int | ffurl_close (URLContext *h) |
const char * | avio_find_protocol_name (const char *url) |
Return the name of the protocol that will handle the passed URL. More... | |
int | avio_check (const char *url, int flags) |
Return AVIO_FLAG_* access flags corresponding to the access permissions of the resource in url, or a negative value corresponding to an AVERROR code in case of failure. More... | |
int | avio_open_dir (AVIODirContext **s, const char *url, AVDictionary **options) |
Open directory for reading. More... | |
int | avio_read_dir (AVIODirContext *s, AVIODirEntry **next) |
Get next directory entry. More... | |
int | avio_close_dir (AVIODirContext **s) |
Close directory. More... | |
void | avio_free_directory_entry (AVIODirEntry **entry) |
Free entry allocated by avio_read_dir(). More... | |
int64_t | ffurl_size (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. More... | |
int | ffurl_get_file_handle (URLContext *h) |
Return the file descriptor associated with this URL. More... | |
int | ffurl_get_multi_file_handle (URLContext *h, int **handles, int *numhandles) |
Return the file descriptors associated with this URL. More... | |
int | ffurl_shutdown (URLContext *h, int flags) |
Signal the URLContext that we are done reading or writing the stream. More... | |
int | ff_check_interrupt (AVIOInterruptCB *cb) |
Check if the user has requested to interrup a blocking function associated with cb. More... | |
Variables | |
static URLProtocol * | first_protocol = NULL |
Logging context. | |
static const AVOption | options [] = { { NULL } } |
const AVClass | ffurl_context_class |
static const char * | urlcontext_to_name (void *ptr) |
static void * | urlcontext_child_next (void *obj, void *prev) |
static const AVClass * | urlcontext_child_class_next (const AVClass *prev) |
#define URL_SCHEME_CHARS |
Definition at line 214 of file avio.c.
Referenced by url_find_protocol().
URLProtocol* ffurl_protocol_next | ( | const URLProtocol * | prev | ) |
Iterate over all available protocols.
prev | result of the previous call to this functions or NULL. |
Definition at line 36 of file avio.c.
Referenced by avio_enum_protocols(), url_find_protocol(), and urlcontext_child_class_next().
const char* avio_enum_protocols | ( | void ** | opaque, |
int | output | ||
) |
Iterate through names of available protocols.
opaque | A private pointer representing current protocol. It must be a pointer to NULL on first iteration and will be updated by successive calls to avio_enum_protocols. |
output | If set to 1, iterate over output protocols, otherwise over input protocols. |
Definition at line 87 of file avio.c.
Referenced by avio_enum_protocols(), and show_protocols().
int ffurl_register_protocol | ( | URLProtocol * | protocol | ) |
Register the URLProtocol protocol.
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static |
Definition at line 109 of file avio.c.
Referenced by ffurl_alloc().
int ffurl_connect | ( | URLContext * | uc, |
AVDictionary ** | options | ||
) |
Connect an URLContext that has been allocated by ffurl_alloc.
options | A dictionary filled with options for nested protocols, i.e. it will be passed to url_open2() for protocols implementing it. This parameter will be destroyed and replaced with a dict containing options that were not found. May be NULL. |
Definition at line 195 of file avio.c.
Referenced by avio_check(), ffurl_open(), mmsh_open_internal(), open_input(), and rtmp_http_open().
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static |
Definition at line 219 of file avio.c.
Referenced by avio_find_protocol_name(), and ffurl_alloc().
int ffurl_alloc | ( | URLContext ** | puc, |
const char * | filename, | ||
int | flags, | ||
const AVIOInterruptCB * | int_cb | ||
) |
Create a URLContext for accessing to the resource indicated by url, but do not initiate the connection yet.
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 |
int_cb | interrupt callback to use for the URLContext, may be NULL |
Definition at line 250 of file avio.c.
Referenced by avio_check(), avio_open_dir(), ffurl_open(), mmsh_open_internal(), open_input(), and rtmp_http_open().
int ffurl_open | ( | URLContext ** | puc, |
const char * | filename, | ||
int | flags, | ||
const AVIOInterruptCB * | int_cb, | ||
AVDictionary ** | options | ||
) |
Create an URLContext for accessing to the resource indicated by url, and open it.
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 |
int_cb | interrupt callback to use for the URLContext, may be NULL |
options | A 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. |
Definition at line 272 of file avio.c.
Referenced by avio_open2(), cache_open(), concat_open(), crypto_open2(), dash_flush(), dash_write_header(), ff_tls_open_underlying(), find_index_range(), ftp_connect_control_connection(), ftp_connect_data_connection(), gopher_open(), hls_read(), http_listen(), http_open_cnx_internal(), icecast_open(), ism_flush(), ism_seek(), md5_close(), mms_open(), open_input(), rtmp_calc_swfhash(), rtmp_open(), rtmpe_open(), rtp_new_av_stream(), rtp_open(), rtsp_listen(), rtsp_read_setup(), sap_read_header(), sap_write_header(), srtp_open(), and subfile_open().
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inlinestatic |
Definition at line 292 of file avio.c.
Referenced by ffurl_read(), ffurl_read_complete(), and ffurl_write().
int ffurl_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.
Definition at line 333 of file avio.c.
Referenced by cache_read(), concat_read(), crypto_read(), ff_rtmp_packet_read(), ff_rtmp_packet_read_internal(), ffio_fdopen(), find_index_range(), ftp_getc(), ftp_read(), gnutls_url_pull(), gopher_read(), hls_read(), http_buf_read(), http_getc(), read_from_url(), rtmp_http_open(), rtmp_http_read(), rtmp_http_send_cmd(), rtmp_write(), rtmpe_read(), sap_fetch_packet(), sap_read_header(), srtp_read(), subfile_read(), and url_bio_bread().
int ffurl_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 340 of file avio.c.
Referenced by ff_rtsp_tcp_read_packet(), get_chunk_header(), get_http_header_data(), get_tcp_server_response(), open_input(), read_data_packet(), read_from_url(), read_line(), rtmp_calc_swfhash(), rtmp_handshake(), rtmp_packet_read_one_chunk(), rtmp_receive_hs_packet(), rtmp_server_handshake(), rtsp_read_announce(), and tls_read_cb().
int ffurl_write | ( | URLContext * | h, |
const unsigned char * | buf, | ||
int | size | ||
) |
Write size bytes from buf to the resource accessed by h.
Definition at line 347 of file avio.c.
Referenced by crypto_close(), crypto_write(), dash_write(), ff_rtmp_packet_write(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_punch_packets(), ff_rtp_send_rtcp_feedback(), ff_rtsp_tcp_write_packet(), ffio_fdopen(), ftp_send_command(), ftp_write(), gnutls_url_push(), gopher_write(), handle_http_errors(), http_connect(), http_listen(), http_send_data(), http_shutdown(), http_write(), icecast_write(), ism_write(), md5_close(), rtmp_handshake(), rtmp_send_hs_packet(), rtmp_server_handshake(), rtmpe_write(), rtp_write(), rtsp_send_reply(), sap_write_close(), sap_write_packet(), send_command_packet(), srtp_write(), tls_write_cb(), and url_bio_bwrite().
int64_t ffurl_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.
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). |
Definition at line 360 of file avio.c.
Referenced by cache_read(), cache_seek(), concat_read(), concat_seek(), ffio_fdopen(), ffurl_connect(), ffurl_size(), find_index_range(), ism_seek(), open_input(), rtmp_calc_swfhash(), and slave_seek().
int ffurl_closep | ( | URLContext ** | h | ) |
Close the resource accessed by the URLContext h, and free the memory used by it.
Also set the URLContext pointer to NULL.
Definition at line 370 of file avio.c.
Referenced by ffurl_close(), ftp_abort(), ftp_close_both_connections(), ftp_close_data_connection(), http_close(), http_open_cnx(), and mmsh_close().
int ffurl_close | ( | URLContext * | h | ) |
Definition at line 392 of file avio.c.
Referenced by avio_check(), avio_close(), avio_close_dir(), avio_open2(), avio_open_dir(), cache_close(), close_connection(), concat_close(), concat_open(), crypto_close(), dash_flush(), dash_free(), ff_rtp_chain_mux_open(), ff_rtsp_undo_setup(), ffurl_open(), find_index_range(), free_playlist_list(), gopher_close(), hls_close(), hls_read(), hls_read_seek(), http_seek_internal(), icecast_close(), ism_flush(), ism_free(), ism_seek(), md5_close(), mms_close(), mmsh_open_internal(), open_input(), read_data(), recheck_discard_flags(), rtmp_calc_swfhash(), rtmp_close(), rtmp_http_close(), rtmp_open(), rtmpe_close(), rtp_close(), rtp_new_av_stream(), rtp_open(), rtsp_listen(), sap_read_close(), sap_write_close(), srtp_close(), subfile_close(), subfile_open(), and tls_close().
const char* avio_find_protocol_name | ( | const char * | url | ) |
Return the name of the protocol that will handle the passed URL.
NULL is returned if no protocol could be found for the given URL.
Definition at line 398 of file avio.c.
Referenced by add_file(), assert_file_overwrite(), and hls_window().
int avio_check | ( | const char * | url, |
int | flags | ||
) |
Return AVIO_FLAG_* access flags corresponding to the access permissions of the resource in url, or a negative value corresponding to an AVERROR code in case of failure.
The returned access flags are masked by the value in flags.
Definition at line 405 of file avio.c.
Referenced by assert_file_overwrite(), build_feed_streams(), and find_image_range().
int avio_open_dir | ( | AVIODirContext ** | s, |
const char * | url, | ||
AVDictionary ** | options | ||
) |
Open directory for reading.
s | directory read context. Pointer to a NULL pointer must be passed. |
url | directory to be listed. |
options | A dictionary filled with protocol-private options. On return this parameter will be destroyed and replaced with a dictionary containing options that were not found. May be NULL. |
Definition at line 424 of file avio.c.
Referenced by main().
int avio_read_dir | ( | AVIODirContext * | s, |
AVIODirEntry ** | next | ||
) |
Get next directory entry.
Returned entry must be freed with avio_free_directory_entry(). In particular it may outlive AVIODirContext.
s | directory read context. | |
[out] | next | next entry or NULL when no more entries. |
Definition at line 461 of file avio.c.
Referenced by main().
int avio_close_dir | ( | AVIODirContext ** | s | ) |
Close directory.
s | directory read context. |
Definition at line 474 of file avio.c.
Referenced by main().
void avio_free_directory_entry | ( | AVIODirEntry ** | entry | ) |
Free entry allocated by avio_read_dir().
entry | entry to be freed. |
Definition at line 489 of file avio.c.
Referenced by avio_read_dir(), and main().
int64_t ffurl_size | ( | 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 497 of file avio.c.
Referenced by concat_open().
int ffurl_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.
Definition at line 512 of file avio.c.
Referenced by ftp_get_file_handle(), http_get_file_handle(), rtp_open(), rtsp_write_packet(), sap_fetch_packet(), sap_write_header(), and srtp_get_file_handle().
int ffurl_get_multi_file_handle | ( | URLContext * | h, |
int ** | handles, | ||
int * | numhandles | ||
) |
Return the file descriptors associated with this URL.
Definition at line 519 of file avio.c.
Referenced by srtp_get_multi_file_handle().
int ffurl_shutdown | ( | URLContext * | h, |
int | flags | ||
) |
Signal the URLContext that we are done reading or writing the stream.
h | pointer to the resource |
flags | flags which control how the resource indicated by url is to be shutdown |
Definition at line 534 of file avio.c.
Referenced by ftp_shutdown().
int ff_check_interrupt | ( | AVIOInterruptCB * | cb | ) |
Check if the user has requested to interrup a blocking function associated with cb.
Definition at line 541 of file avio.c.
Referenced by avformat_find_stream_info(), ff_listen_connect(), ff_network_wait_fd_timeout(), ff_poll_interrupt(), hls_read(), read_data(), retry_transfer_wrapper(), and rtp_read().
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static |
Definition at line 34 of file avio.c.
Referenced by ffurl_protocol_next(), and ffurl_register_protocol().
const AVClass ffurl_context_class |
Definition at line 77 of file avio.c.
Referenced by ff_avio_child_class_next(), and url_alloc_for_protocol().