hwcontext_drm.h File Reference

API-specific header for AV_HWDEVICE_TYPE_DRM. More...

#include <stddef.h>
#include <stdint.h>
#include "buffer.h"

Go to the source code of this file.

Data Structures
struct	AVDRMObjectDescriptor
	DRM object descriptor. More...
struct	AVDRMPlaneDescriptor
	DRM plane descriptor. More...
struct	AVDRMLayerDescriptor
	DRM layer descriptor. More...
struct	AVDRMFrameDescriptor
	DRM frame descriptor. More...
struct	AVDRMDeviceContext
	DRM device. More...

Enumerations
enum	{ AV_DRM_MAX_PLANES = 4 }

Functions
int	av_hwcontext_drm_v4l2_4cc_test (AVBufferRef *hw_device_ctx, uint32_t fcc)
	Test if a given V4L2 buffer fourcc is allowed in this DRM hardware device context.

Detailed Description

API-specific header for AV_HWDEVICE_TYPE_DRM.

Internal frame allocation is not currently supported - all frames must be allocated by the user. Thus AVHWFramesContext is always NULL, though this may change if support for frame allocation is added in future.

Definition in file hwcontext_drm.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
AV_DRM_MAX_PLANES	The maximum number of layers/planes in a DRM frame.

Definition at line 37 of file hwcontext_drm.h.

Function Documentation

av_hwcontext_drm_v4l2_4cc_test()

int av_hwcontext_drm_v4l2_4cc_test	(	AVBufferRef *	hw_device_ctx,
		uint32_t	fcc
	)

Test if a given V4L2 buffer fourcc is allowed in this DRM hardware device context.

Parameters

hw_device_ctx	AVBufferRef to an AVHWDeviceContext of type AV_HWDEVICE_TYPE_DRM, or NULL (returns 0 if NULL)
fcc	V4L2 fourcc pixel format code to test

Returns

1 if the format is allowed, 0 otherwise