VDPAU Decoder and Renderer

VDPAU hardware acceleration has two modules. More...

Collaboration diagram for VDPAU Decoder and Renderer:

Files
file	vdpau.h
	Public libavcodec VDPAU header.

Data Structures
union	FFVdpPictureInfo
struct	AVVDPAUContext
	This structure is used to share data between the libavcodec library and the client video application. More...
struct	vdpau_render_state
	This structure is used as a callback between the FFmpeg decoder (vd_) and presentation (vo_) module. More...

Macros
#define	FF_VDPAU_STATE_USED_FOR_RENDER   1
	The videoSurface is used for rendering. More...
#define	FF_VDPAU_STATE_USED_FOR_REFERENCE   2
	The videoSurface is needed for reference/prediction. More...

Typedefs
typedef struct AVVDPAUContext	AVVDPAUContext
	This structure is used to share data between the libavcodec library and the client video application. More...

Detailed Description

VDPAU hardware acceleration has two modules.

• VDPAU decoding
• VDPAU presentation

The VDPAU decoding module parses all headers using FFmpeg parsing mechanisms and uses VDPAU for the actual decoding.

As per the current implementation, the actual decoding and rendering (API calls) are done as part of the VDPAU presentation (vo_vdpau.c) module.

Macro Definition Documentation

#define FF_VDPAU_STATE_USED_FOR_REFERENCE   2

The videoSurface is needed for reference/prediction.

The codec manipulates this.

Definition at line 125 of file vdpau.h.

#define FF_VDPAU_STATE_USED_FOR_RENDER   1

The videoSurface is used for rendering.

Definition at line 119 of file vdpau.h.

Typedef Documentation

typedef struct AVVDPAUContext AVVDPAUContext

This structure is used to share data between the libavcodec library and the client video application.

The user shall zero-allocate the structure and make it available as AVCodecContext.hwaccel_context. Members can be set by the user once during initialization or through each AVCodecContext.get_buffer() function call. In any case, they must be valid prior to calling decoding functions.