#include "libavutil/fifo.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_d3d12va.h"
#include "avcodec.h"
#include "internal.h"
#include "hwaccel_internal.h"

Data Structures
struct	D3D12VADecodeContext
	This structure is used to provide the necessary configurations and data to the FFmpeg Direct3D 12 HWAccel implementation for video decoder. More...

Macros
#define	D3D12VA_VIDEO_DEC_ASYNC_DEPTH 36

#define	D3D12VA_DECODE_CONTEXT(avctx) ((D3D12VADecodeContext *)((avctx)->internal->hwaccel_priv_data))

#define	D3D12VA_FRAMES_CONTEXT(avctx) ((AVHWFramesContext *)(avctx)->hw_frames_ctx->data)

Functions
int	ff_d3d12va_get_suitable_max_bitstream_size (AVCodecContext *avctx)
	Get a suitable maximum bitstream size. More...

int	ff_d3d12va_decode_init (AVCodecContext *avctx)
	init D3D12VADecodeContext More...

int	ff_d3d12va_decode_uninit (AVCodecContext *avctx)
	uninit D3D12VADecodeContext More...

int	ff_d3d12va_common_frame_params (AVCodecContext avctx, AVBufferRef hw_frames_ctx)
	d3d12va common frame params More...

int	ff_d3d12va_common_end_frame (AVCodecContext avctx, AVFrame frame, const void pp, unsigned pp_size, const void qm, unsigned qm_size, int()(AVCodecContext , D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS , ID3D12Resource ))
	d3d12va common end frame More...

Macro Definition Documentation

◆ D3D12VA_VIDEO_DEC_ASYNC_DEPTH

#define D3D12VA_VIDEO_DEC_ASYNC_DEPTH 36

Definition at line 127 of file d3d12va_decode.h.

◆ D3D12VA_DECODE_CONTEXT

#define D3D12VA_DECODE_CONTEXT ( avctx ) ((D3D12VADecodeContext *)((avctx)->internal->hwaccel_priv_data))

Definition at line 128 of file d3d12va_decode.h.

◆ D3D12VA_FRAMES_CONTEXT

#define D3D12VA_FRAMES_CONTEXT ( avctx ) ((AVHWFramesContext *)(avctx)->hw_frames_ctx->data)

Definition at line 129 of file d3d12va_decode.h.

Function Documentation

◆ ff_d3d12va_get_suitable_max_bitstream_size()

int ff_d3d12va_get_suitable_max_bitstream_size ( AVCodecContext * avctx )

Get a suitable maximum bitstream size.

Creating and destroying a resource on d3d12 needs sync and reallocation, so use this function to help allocate a big enough bitstream buffer to avoid recreating resources when decoding.

Returns: the suitable size

Definition at line 43 of file d3d12va_decode.c.

Referenced by d3d12va_av1_decode_init(), and ff_d3d12va_decode_init().

◆ ff_d3d12va_decode_init()

int ff_d3d12va_decode_init ( AVCodecContext * avctx )

init D3D12VADecodeContext

Returns: Error code (ret < 0 if failed)

Definition at line 282 of file d3d12va_decode.c.

Referenced by d3d12va_av1_decode_init(), d3d12va_h264_decode_init(), d3d12va_hevc_decode_init(), d3d12va_mpeg2_decode_init(), d3d12va_vc1_decode_init(), and d3d12va_vp9_decode_init().

◆ ff_d3d12va_decode_uninit()

int ff_d3d12va_decode_uninit ( AVCodecContext * avctx )

uninit D3D12VADecodeContext

Returns: Error code (ret < 0 if failed)

Definition at line 372 of file d3d12va_decode.c.

Referenced by d3d12va_av1_decode_uninit(), and ff_d3d12va_decode_init().

◆ ff_d3d12va_common_frame_params()

int ff_d3d12va_common_frame_params	(	AVCodecContext *	avctx,
		AVBufferRef *	hw_frames_ctx
	)

d3d12va common frame params

Returns: Error code (ret < 0 if failed)

Definition at line 270 of file d3d12va_decode.c.

◆ ff_d3d12va_common_end_frame()

int ff_d3d12va_common_end_frame	(	AVCodecContext *	avctx,
		AVFrame *	frame,
		const void *	pp,
		unsigned	pp_size,
		const void *	qm,
		unsigned	qm_size,
		int()(AVCodecContext , D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS , ID3D12Resource )
	)

d3d12va common end frame

Parameters

avctx	codec context
frame	current output frame
pp	picture parameters
pp_size	the size of the picture parameters
qm	quantization matrix
qm_size	the size of the quantization matrix
callback	update decoder-specified input stream arguments

Returns: Error code (ret < 0 if failed)

Definition at line 433 of file d3d12va_decode.c.

Referenced by d3d12va_av1_end_frame(), d3d12va_h264_end_frame(), d3d12va_hevc_end_frame(), d3d12va_mpeg2_end_frame(), d3d12va_vc1_end_frame(), and d3d12va_vp9_end_frame().

Data Structures

Macros

Functions