avdevice.c File Reference

#include "libavutil/avassert.h"
#include "avdevice.h"
#include "config.h"

Go to the source code of this file.

Macros
#define	LICENSE_PREFIX   "libavdevice license: "

Functions
unsigned	avdevice_version (void)
	Return the LIBAVDEVICE_VERSION_INT constant.
const char *	avdevice_configuration (void)
	Return the libavdevice build-time configuration.
const char *	avdevice_license (void)
	Return the libavdevice license.
int	avdevice_app_to_dev_control_message (struct AVFormatContext *s, enum AVAppToDevMessageType type, void *data, size_t data_size)
	Send control message from application to device.
int	avdevice_dev_to_app_control_message (struct AVFormatContext *s, enum AVDevToAppMessageType type, void *data, size_t data_size)
	Send control message from device to application.
int	avdevice_list_devices (AVFormatContext *s, AVDeviceInfoList **device_list)
	List devices.
void	avdevice_free_list_devices (AVDeviceInfoList **device_list)
	Convinient function to free result of avdevice_list_devices().

Macro Definition Documentation

#define LICENSE_PREFIX   "libavdevice license: "

Function Documentation

unsigned avdevice_version

(

void

)

Return the LIBAVDEVICE_VERSION_INT constant.

Definition at line 23 of file avdevice.c.

const char* avdevice_configuration

(

void

)

Return the libavdevice build-time configuration.

Definition at line 29 of file avdevice.c.

const char* avdevice_license

(

void

)

Return the libavdevice license.

Definition at line 34 of file avdevice.c.

int avdevice_app_to_dev_control_message	(	struct AVFormatContext *	s,
		enum AVAppToDevMessageType	type,
		void *	data,
		size_t	data_size
	)

Send control message from application to device.

Parameters

s	device context.
type	message type.
data	message data. Exact type depends on message type.
data_size	size of message data.

Returns

>= 0 on success, negative on error. AVERROR(ENOSYS) when device doesn't implement handler of the message.

Definition at line 40 of file avdevice.c.

int avdevice_dev_to_app_control_message	(	struct AVFormatContext *	s,
		enum AVDevToAppMessageType	type,
		void *	data,
		size_t	data_size
	)

Send control message from device to application.

Parameters

s	device context.
type	message type.
data	message data. Can be NULL.
data_size	size of message data.

Returns

>= 0 on success, negative on error. AVERROR(ENOSYS) when application doesn't implement handler of the message.

Definition at line 48 of file avdevice.c.

Referenced by opengl_create_window(), opengl_draw(), opengl_release_window(), opengl_resize(), opengl_write_header(), and opengl_write_trailer().

int avdevice_list_devices	(	struct AVFormatContext *	s,
		AVDeviceInfoList **	device_list
	)

List devices.

Returns available device names and their parameters.

Note

: Some devices may accept system-dependent device names that cannot be autodetected. The list returned by this function cannot be assumed to be always completed.

Parameters

	s	device context.
[out]	device_list	list of autodetected devices.

Returns

count of autodetected devices, negative on error.

Definition at line 56 of file avdevice.c.

void avdevice_free_list_devices

(

AVDeviceInfoList **

device_list

)

Convinient function to free result of avdevice_list_devices().

Parameters

devices

device list to be freed.

Definition at line 74 of file avdevice.c.