#include <unistd.h>
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "os_support.h"
#include "avformat.h"
Go to the source code of this file.
Data Structures | |
struct | URLProtocol_compat |
Defines | |
#define | _XOPEN_SOURCE 600 |
#define | URL_SCHEME_CHARS |
Functions | |
static int | default_interrupt_cb (void) |
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. | |
int | av_register_protocol2 (URLProtocol *protocol, int size) |
Register the URLProtocol protocol. | |
int | av_register_protocol (URLProtocol *protocol) |
int | register_protocol (URLProtocol *protocol) |
static int | url_alloc_for_protocol (URLContext **puc, struct URLProtocol *up, const char *filename, int flags) |
int | url_connect (URLContext *uc) |
Connect an URLContext that has been allocated by url_alloc. | |
int | url_open_protocol (URLContext **puc, struct URLProtocol *up, const char *filename, int flags) |
Create a URLContext for accessing to the resource indicated by url, and open it using the URLProtocol up. | |
int | url_alloc (URLContext **puc, const char *filename, int flags) |
Create a URLContext for accessing to the resource indicated by url, but do not initiate the connection yet. | |
int | url_open (URLContext **puc, const char *filename, int flags) |
Create an URLContext for accessing to the resource indicated by url, and open it. | |
static int | retry_transfer_wrapper (URLContext *h, unsigned char *buf, int size, int size_min, int(*transfer_func)(URLContext *h, unsigned char *buf, int size)) |
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 *filename) |
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 | 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. | |
Variables | |
URLProtocol * | first_protocol = NULL |
URLInterruptCB * | url_interrupt_cb = default_interrupt_cb |
#define URL_SCHEME_CHARS |
Value:
"abcdefghijklmnopqrstuvwxyz" \ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \ "0123456789+-."
Definition at line 170 of file avio.c.
Referenced by url_alloc().
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().
int av_register_protocol | ( | URLProtocol * | protocol | ) |
int av_register_protocol2 | ( | URLProtocol * | protocol, | |
int | size | |||
) |
Register the URLProtocol protocol.
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_pause | ( | URLContext * | h, | |
int | pause | |||
) |
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.).
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. |
static int default_interrupt_cb | ( | void | ) | [static] |
int register_protocol | ( | URLProtocol * | protocol | ) |
static int retry_transfer_wrapper | ( | URLContext * | h, | |
unsigned char * | buf, | |||
int | size, | |||
int | size_min, | |||
int(*)(URLContext *h, unsigned char *buf, int size) | transfer_func | |||
) | [inline, static] |
Definition at line 216 of file avio.c.
Referenced by url_read(), url_read_complete(), and url_write().
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.
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 |
Definition at line 175 of file avio.c.
Referenced by mmsh_open(), and url_open().
static int url_alloc_for_protocol | ( | URLContext ** | puc, | |
struct URLProtocol * | up, | |||
const char * | filename, | |||
int | flags | |||
) | [static] |
int url_close | ( | URLContext * | h | ) |
Close the resource accessed by the URLContext h, and free the memory used by it.
Definition at line 281 of file avio.c.
Referenced by applehttp_close(), applehttp_read(), avio_close(), avio_open(), close_connection(), concat_close(), concat_open(), ff_rtsp_undo_setup(), gopher_close(), http_close(), http_open_cnx(), http_seek(), md5_close(), mms_close(), mmsh_close(), mmsh_open(), rtmp_close(), rtp_close(), rtp_new_av_stream(), rtp_open(), sap_read_close(), sap_write_close(), url_exist(), url_open(), and url_open_protocol().
int url_connect | ( | URLContext * | uc | ) |
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 * | filename | ) |
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().
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_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 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 | |||
) |
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.
h | file handle |
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().
int url_open | ( | URLContext ** | h, | |
const char * | url, | |||
int | flags | |||
) |
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 |
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_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.
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 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.
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().
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.
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 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_write | ( | URLContext * | h, | |
const unsigned char * | buf, | |||
int | size | |||
) |
Write size bytes from buf to the resource accessed by h.
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().
URLInterruptCB* url_interrupt_cb = default_interrupt_cb |
Definition at line 51 of file avio.c.
Referenced by applehttp_read(), applehttp_read_packet(), av_find_stream_info(), retry_transfer_wrapper(), rtp_read(), tcp_open(), udp_read(), and url_set_interrupt_cb().