CuteLogger
Fast and simple logging solution for Qt based applications
d3dvideowidget.h
1/*
2 * Copyright (c) 2023 Meltytech, LLC
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef D3DVIDEOWIDGET_H
19#define D3DVIDEOWIDGET_H
20
21#include "videowidget.h"
22
23#include <d3d11.h>
24#include <directxmath.h>
25
26class D3DVideoWidget : public Mlt::VideoWidget
27{
28 Q_OBJECT
29public:
30 explicit D3DVideoWidget(QObject *parent = nullptr);
31 virtual ~D3DVideoWidget();
32
33public slots:
34 virtual void initialize();
35 virtual void beforeRendering();
36 virtual void renderVideo();
37
38private:
39 enum Stage {
40 VertexStage,
41 FragmentStage
42 };
43 void prepareShader(Stage stage);
44 QByteArray compileShader(Stage stage,
45 const QByteArray &source,
46 const QByteArray &entryPoint);
47 ID3D11ShaderResourceView *initTexture(const void *p, int width, int height);
48
49 ID3D11Device *m_device = nullptr;
50 ID3D11DeviceContext *m_context = nullptr;
51 QByteArray m_vert;
52 QByteArray m_vertEntryPoint;
53 QByteArray m_frag;
54 QByteArray m_fragEntryPoint;
55
56 bool m_initialized = false;
57 ID3D11Buffer *m_vbuf = nullptr;
58 ID3D11Buffer *m_cbuf = nullptr;
59 ID3D11VertexShader *m_vs = nullptr;
60 ID3D11PixelShader *m_ps = nullptr;
61 ID3D11InputLayout *m_inputLayout = nullptr;
62 ID3D11RasterizerState *m_rastState = nullptr;
63 ID3D11DepthStencilState *m_dsState = nullptr;
64 ID3D11ShaderResourceView *m_texture[3] = {nullptr, nullptr, nullptr};
65
66 struct ConstantBuffer {
67 int32_t colorspace;
68 };
69
70 ConstantBuffer m_constants;
71};
72
73#endif // D3DVIDEOWIDGET_H