Files
file	vdpau.h

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

Typedefs
typedef int(*	AVVDPAU_Render2) (struct AVCodecContext , struct AVFrame , const VdpPictureInfo , uint32_t, const VdpBitstreamBuffer )

Functions
AVVDPAUContext *	av_alloc_vdpaucontext (void)
	allocation function for AVVDPAUContext More...

AVVDPAU_Render2	av_vdpau_hwaccel_get_render2 (const AVVDPAUContext *)

void	av_vdpau_hwaccel_set_render2 (AVVDPAUContext *, AVVDPAU_Render2)

int	av_vdpau_bind_context (AVCodecContext avctx, VdpDevice device, VdpGetProcAddress get_proc_address, unsigned flags)
	Associate a VDPAU device with a codec context for hardware acceleration. More...

int	av_vdpau_get_surface_parameters (AVCodecContext avctx, VdpChromaType type, uint32_t width, uint32_t height)
	Gets the parameters to create an adequate VDPAU video surface for the codec context using VDPAU hardware decoding acceleration. More...

AVVDPAUContext *	av_vdpau_alloc_context (void)
	Allocate an AVVDPAUContext. 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.

Typedef Documentation

◆ AVVDPAU_Render2

typedef int(* AVVDPAU_Render2) (struct AVCodecContext *, struct AVFrame *, const VdpPictureInfo *, uint32_t, const VdpBitstreamBuffer *)

Definition at line 62 of file vdpau.h.

Function Documentation

◆ av_alloc_vdpaucontext()

AVVDPAUContext* av_alloc_vdpaucontext ( void )

allocation function for AVVDPAUContext

Allows extending the struct without breaking API/ABI

Definition at line 69 of file vdpau.c.

◆ av_vdpau_hwaccel_get_render2()

AVVDPAU_Render2 av_vdpau_hwaccel_get_render2 ( const AVVDPAUContext * )

◆ av_vdpau_hwaccel_set_render2()

void av_vdpau_hwaccel_set_render2	(	AVVDPAUContext *	,
		AVVDPAU_Render2
	)

◆ av_vdpau_bind_context()

int av_vdpau_bind_context	(	AVCodecContext *	avctx,
		VdpDevice	device,
		VdpGetProcAddress *	get_proc_address,
		unsigned	flags
	)

Associate a VDPAU device with a codec context for hardware acceleration.

This function is meant to be called from the get_format() codec callback, or earlier. It can also be called after avcodec_flush_buffers() to change the underlying VDPAU device mid-stream (e.g. to recover from non-transparent display preemption).

Note: get_format() must return AV_PIX_FMT_VDPAU if this function completes successfully.

Parameters

avctx	decoding context whose get_format() callback is invoked
device	VDPAU device handle to use for hardware acceleration
get_proc_address	VDPAU device driver
flags	zero of more OR'd AV_HWACCEL_FLAG_* flags

Returns: 0 on success, an AVERROR code on failure.

Definition at line 410 of file vdpau.c.

◆ av_vdpau_get_surface_parameters()

int av_vdpau_get_surface_parameters	(	AVCodecContext *	avctx,
		VdpChromaType *	type,
		uint32_t *	width,
		uint32_t *	height
	)

Gets the parameters to create an adequate VDPAU video surface for the codec context using VDPAU hardware decoding acceleration.

Note: Behavior is undefined if the context was not successfully bound to a VDPAU device using av_vdpau_bind_context().

Parameters

avctx	the codec context being used for decoding the stream
type	storage space for the VDPAU video surface chroma type (or NULL to ignore)
width	storage space for the VDPAU video surface pixel width (or NULL to ignore)
height	storage space for the VDPAU video surface pixel height (or NULL to ignore)