2 * Direct3D11 HW acceleration
4 * copyright (c) 2009 Laurent Aimar
5 * copyright (c) 2015 Steve Lhomme
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #ifndef AVCODEC_D3D11VA_H
25 #define AVCODEC_D3D11VA_H
29 * @ingroup lavc_codec_hwaccel_d3d11va
30 * Public libavcodec D3D11VA header.
33 #if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0602
35 #define _WIN32_WINNT 0x0602
42 * @defgroup lavc_codec_hwaccel_d3d11va Direct3D11
43 * @ingroup lavc_codec_hwaccel
48 #define FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG 1 ///< Work around for Direct3D11 and old UVD/UVD+ ATI video cards
49 #define FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO 2 ///< Work around for Direct3D11 and old Intel GPUs with ClearVideo interface
52 * This structure is used to provides the necessary configurations and data
53 * to the Direct3D11 FFmpeg HWAccel implementation.
55 * The application must make it available as AVCodecContext.hwaccel_context.
57 * Use av_d3d11va_alloc_context() exclusively to allocate an AVD3D11VAContext.
59 typedef struct AVD3D11VAContext {
61 * D3D11 decoder object
63 ID3D11VideoDecoder *decoder;
68 ID3D11VideoContext *video_context;
71 * D3D11 configuration used to create the decoder
73 D3D11_VIDEO_DECODER_CONFIG *cfg;
76 * The number of surface in the surface array
78 unsigned surface_count;
81 * The array of Direct3D surfaces used to create the decoder
83 ID3D11VideoDecoderOutputView **surface;
86 * A bit field configuring the workarounds needed for using the decoder
91 * Private to the FFmpeg AVHWAccel implementation
96 * Mutex to access video_context
102 * Allocate an AVD3D11VAContext.
104 * @return Newly-allocated AVD3D11VAContext or NULL on failure.
106 AVD3D11VAContext *av_d3d11va_alloc_context(void);
112 #endif /* AVCODEC_D3D11VA_H */