VDPAU_Decoding

Functions
AVVDPAUContext *	av_alloc_vdpaucontext (void)
	allocation function for AVVDPAUContext 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...
int	ff_vdpau_common_frame_params (AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
int	ff_vdpau_common_init (AVCodecContext *avctx, VdpDecoderProfile profile, int level)
int	ff_vdpau_common_uninit (AVCodecContext *avctx)
int	ff_vdpau_common_start_frame (struct vdpau_picture_context *pic_ctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
int	ff_vdpau_common_end_frame (AVCodecContext *avctx, AVFrame *frame, struct vdpau_picture_context *pic_ctx)
int	ff_vdpau_add_buffer (struct vdpau_picture_context *pic_ctx, const uint8_t *buf, uint32_t size)
int	av_vdpau_get_profile (AVCodecContext *avctx, VdpDecoderProfile *profile)
	Get a decoder profile that should be used for initializing a VDPAU decoder. More...
AVVDPAUContext *	av_vdpau_alloc_context (void)
	Allocate an AVVDPAUContext. More...
int	av_vdpau_bind_context (AVCodecContext *avctx, VdpDevice device, VdpGetProcAddress *get_proc, unsigned flags)
	Associate a VDPAU device with a codec context for hardware acceleration. More...

Detailed Description

Function Documentation

av_alloc_vdpaucontext()

AVVDPAUContext* av_alloc_vdpaucontext

(

void

)

allocation function for AVVDPAUContext

Allows extending the struct without breaking API/ABI

av_vdpau_alloc_context()

AVVDPAUContext* av_vdpau_alloc_context

(

void

)

Allocate an AVVDPAUContext.

Returns

Newly-allocated AVVDPAUContext or NULL on failure.

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.

av_vdpau_get_profile()

int av_vdpau_get_profile	(	AVCodecContext *	avctx,
		VdpDecoderProfile *	profile
	)

Get a decoder profile that should be used for initializing a VDPAU decoder.

Should be called from the AVCodecContext.get_format() callback.

Deprecated:

Use av_vdpau_bind_context() instead.

Parameters

avctx	the codec context being used for decoding the stream
profile	a pointer into which the result will be written on success. The contents of profile are undefined if this function returns an error.

Returns

0 on success (non-negative), a negative AVERROR on failure.

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)

Returns

0 on success, a negative AVERROR code on failure.