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349ce30e4e
The implementation is based on: https://learn.microsoft.com/en-us/windows/win32/medfound/direct3d-12-video-overview With the Direct3D 12 video decoding support, we can render or process the decoded images by the pixel shaders or compute shaders directly without the extra copy overhead, which is beneficial especially if you are trying to render or post-process a 4K or 8K video. The command below is how to enable d3d12va: ffmpeg -hwaccel d3d12va -i input.mp4 output.mp4 Signed-off-by: Wu Jianhua <toqsxw@outlook.com> Signed-off-by: Tong Wu <tong1.wu@intel.com>
110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/*
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* Direct3D11 HW acceleration
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*
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* copyright (c) 2009 Laurent Aimar
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* copyright (c) 2015 Steve Lhomme
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_D3D11VA_H
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#define AVCODEC_D3D11VA_H
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/**
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* @file
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* @ingroup lavc_codec_hwaccel_d3d11va
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* Public libavcodec D3D11VA header.
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*/
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#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0602
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#undef _WIN32_WINNT
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#define _WIN32_WINNT 0x0602
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#endif
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#include <stdint.h>
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#include <d3d11.h>
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/**
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* @defgroup lavc_codec_hwaccel_d3d11va Direct3D11
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* @ingroup lavc_codec_hwaccel
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*
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* @{
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*/
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/**
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* This structure is used to provides the necessary configurations and data
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* to the Direct3D11 FFmpeg HWAccel implementation.
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*
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* The application must make it available as AVCodecContext.hwaccel_context.
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*
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* Use av_d3d11va_alloc_context() exclusively to allocate an AVD3D11VAContext.
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*/
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typedef struct AVD3D11VAContext {
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/**
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* D3D11 decoder object
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*/
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ID3D11VideoDecoder *decoder;
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/**
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* D3D11 VideoContext
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*/
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ID3D11VideoContext *video_context;
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/**
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* D3D11 configuration used to create the decoder
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*/
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D3D11_VIDEO_DECODER_CONFIG *cfg;
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/**
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* The number of surface in the surface array
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*/
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unsigned surface_count;
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/**
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* The array of Direct3D surfaces used to create the decoder
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*/
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ID3D11VideoDecoderOutputView **surface;
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/**
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* A bit field configuring the workarounds needed for using the decoder
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*/
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uint64_t workaround;
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/**
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* Private to the FFmpeg AVHWAccel implementation
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*/
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unsigned report_id;
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/**
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* Mutex to access video_context
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*/
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HANDLE context_mutex;
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} AVD3D11VAContext;
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/**
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* Allocate an AVD3D11VAContext.
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*
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* @return Newly-allocated AVD3D11VAContext or NULL on failure.
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*/
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AVD3D11VAContext *av_d3d11va_alloc_context(void);
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/**
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* @}
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*/
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#endif /* AVCODEC_D3D11VA_H */
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