libavformat/avio.c File Reference

#include "libavutil/avstring.h"
#include "libavcodec/opt.h"
#include "os_support.h"
#include "avformat.h"

Go to the source code of this file.

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_protocol (URLProtocol *protocol)
int	register_protocol (URLProtocol *protocol)
int	url_open_protocol (URLContext **puc, struct URLProtocol *up, const char *filename, int flags)
int	url_open (URLContext **puc, const char *filename, int flags)
int	url_read (URLContext *h, unsigned char *buf, int size)
int	url_write (URLContext *h, unsigned char *buf, int size)
int64_t	url_seek (URLContext *h, int64_t pos, int whence)
int	url_close (URLContext *h)
int	url_exist (const char *filename)
int64_t	url_filesize (URLContext *h)
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)
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

---

Function Documentation

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 47 of file avio.c.

Referenced by show_formats().

int av_register_protocol

(

URLProtocol *

protocol

)

Definition at line 53 of file avio.c.

Referenced by register_protocol().

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 232 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 239 of file avio.c.

static int default_interrupt_cb

(

void

)

[static]

Definition at line 220 of file avio.c.

Referenced by url_set_interrupt_cb().

int register_protocol

(

URLProtocol *

protocol

)

Deprecated:

Use av_register_protocol() instead.

Definition at line 64 of file avio.c.

int url_close

(

URLContext *

h

)

Definition at line 174 of file avio.c.

Referenced by close_connection(), gopher_close(), http_close(), http_open_cnx(), http_seek(), make_setup_request(), rtp_close(), rtp_new_av_stream(), rtp_open(), rtsp_close_streams(), rtsp_read_close(), rtsp_read_header(), url_exist(), url_fclose(), and url_fopen().

int url_exist

(

const char *

filename

)

Definition at line 185 of file avio.c.

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

int64_t url_filesize

(

URLContext *

h

)

Definition at line 194 of file avio.c.

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

Definition at line 214 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 209 of file avio.c.

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

int url_open	(	URLContext **	puc,
		const char *	filename,
		int	flags
	)

Definition at line 109 of file avio.c.

Referenced by gopher_open(), http_open_cnx(), make_setup_request(), rtp_new_av_stream(), rtp_open(), rtsp_read_header(), sdp_read_header(), url_exist(), and url_fopen().

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

Definition at line 70 of file avio.c.

Referenced by url_open().

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

Definition at line 143 of file avio.c.

Referenced by gopher_read(), http_getc(), http_read(), udp_read_packet(), url_fdopen(), and url_readbuf().

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

Definition at line 164 of file avio.c.

Referenced by url_fdopen(), url_filesize(), and url_open_protocol().

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 225 of file avio.c.

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

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

Definition at line 152 of file avio.c.

Referenced by gopher_write(), http_send_data(), http_write(), rtp_check_and_send_back_rr(), rtp_write(), rtsp_send_cmd(), and url_fdopen().

---

Variable Documentation

URLProtocol* first_protocol = NULL

Definition at line 44 of file avio.c.

URLInterruptCB* url_interrupt_cb = default_interrupt_cb

Definition at line 45 of file avio.c.

Referenced by av_find_stream_info(), tcp_open(), tcp_read(), tcp_write(), udp_read(), and udp_read_packet().