xref: /third_party/ffmpeg/libavcodec/d3d11va.h (revision cabdff1a) 
1/*
2 * Direct3D11 HW acceleration
3 *
4 * copyright (c) 2009 Laurent Aimar
5 * copyright (c) 2015 Steve Lhomme
6 *
7 * This file is part of FFmpeg.
8 *
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.
13 *
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.
18 *
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
22 */
23
24#ifndef AVCODEC_D3D11VA_H
25#define AVCODEC_D3D11VA_H
26
27/**
28 * @file
29 * @ingroup lavc_codec_hwaccel_d3d11va
30 * Public libavcodec D3D11VA header.
31 */
32
33#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0602
34#undef _WIN32_WINNT
35#define _WIN32_WINNT 0x0602
36#endif
37
38#include <stdint.h>
39#include <d3d11.h>
40
41/**
42 * @defgroup lavc_codec_hwaccel_d3d11va Direct3D11
43 * @ingroup lavc_codec_hwaccel
44 *
45 * @{
46 */
47
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
50
51/**
52 * This structure is used to provides the necessary configurations and data
53 * to the Direct3D11 FFmpeg HWAccel implementation.
54 *
55 * The application must make it available as AVCodecContext.hwaccel_context.
56 *
57 * Use av_d3d11va_alloc_context() exclusively to allocate an AVD3D11VAContext.
58 */
59typedef struct AVD3D11VAContext {
60    /**
61     * D3D11 decoder object
62     */
63    ID3D11VideoDecoder *decoder;
64
65    /**
66      * D3D11 VideoContext
67      */
68    ID3D11VideoContext *video_context;
69
70    /**
71     * D3D11 configuration used to create the decoder
72     */
73    D3D11_VIDEO_DECODER_CONFIG *cfg;
74
75    /**
76     * The number of surface in the surface array
77     */
78    unsigned surface_count;
79
80    /**
81     * The array of Direct3D surfaces used to create the decoder
82     */
83    ID3D11VideoDecoderOutputView **surface;
84
85    /**
86     * A bit field configuring the workarounds needed for using the decoder
87     */
88    uint64_t workaround;
89
90    /**
91     * Private to the FFmpeg AVHWAccel implementation
92     */
93    unsigned report_id;
94
95    /**
96      * Mutex to access video_context
97      */
98    HANDLE  context_mutex;
99} AVD3D11VAContext;
100
101/**
102 * Allocate an AVD3D11VAContext.
103 *
104 * @return Newly-allocated AVD3D11VAContext or NULL on failure.
105 */
106AVD3D11VAContext *av_d3d11va_alloc_context(void);
107
108/**
109 * @}
110 */
111
112#endif /* AVCODEC_D3D11VA_H */
113