diff options
Diffstat (limited to 'src/plugins/multimedia/ffmpeg/qffmpeghwaccel_d3d11_p.h')
| -rw-r--r-- | src/plugins/multimedia/ffmpeg/qffmpeghwaccel_d3d11_p.h | 103 |
1 files changed, 64 insertions, 39 deletions
diff --git a/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_d3d11_p.h b/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_d3d11_p.h index 383b7168c..bfcc1f10c 100644 --- a/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_d3d11_p.h +++ b/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_d3d11_p.h @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2022 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QFFMPEGHWACCEL_D3D11_P_H #define QFFMPEGHWACCEL_D3D11_P_H @@ -51,6 +15,12 @@ // #include "qffmpeghwaccel_p.h" +#include <private/quniquehandle_p.h> +#include <private/qcomptr_p.h> +#include <qt_windows.h> + +#include <d3d11.h> +#include <d3d11_1.h> #if QT_CONFIG(wmf) @@ -60,6 +30,56 @@ class QRhi; namespace QFFmpeg { +struct SharedTextureHandleTraits +{ + using Type = HANDLE; + static Type invalidValue() { return nullptr; } + static bool close(Type handle) { return CloseHandle(handle) != 0; } +}; + +using SharedTextureHandle = QUniqueHandle<SharedTextureHandleTraits>; + +/*! \internal Utility class for synchronized transfer of a texture between two D3D devices + * + * This class is used to copy a texture from one device to another device. This + * is implemented using a shared texture, along with keyed mutexes to synchronize + * access to the texture. + * + * This is needed because we need to copy data from FFmpeg to RHI. FFmpeg and RHI + * uses different D3D devices. + */ +class TextureBridge final +{ +public: + /** Copy a texture slice at position 'index' belonging to device 'dev' + * into a shared texture, limiting the texture size to the frame size */ + bool copyToSharedTex(ID3D11Device *dev, ID3D11DeviceContext *ctx, + const ComPtr<ID3D11Texture2D> &tex, UINT index, const QSize &frameSize); + + /** Obtain a copy of the texture on a second device 'dev' */ + ComPtr<ID3D11Texture2D> copyFromSharedTex(const ComPtr<ID3D11Device1> &dev, + const ComPtr<ID3D11DeviceContext> &ctx); + +private: + bool ensureDestTex(const ComPtr<ID3D11Device1> &dev); + bool ensureSrcTex(ID3D11Device *dev, const ComPtr<ID3D11Texture2D> &tex, const QSize &frameSize); + bool isSrcInitialized(const ID3D11Device *dev, const ComPtr<ID3D11Texture2D> &tex, const QSize &frameSize) const; + bool recreateSrc(ID3D11Device *dev, const ComPtr<ID3D11Texture2D> &tex, const QSize &frameSize); + + SharedTextureHandle m_sharedHandle{}; + + const UINT m_srcKey = 0; + ComPtr<ID3D11Texture2D> m_srcTex; + ComPtr<IDXGIKeyedMutex> m_srcMutex; + + const UINT m_destKey = 1; + ComPtr<ID3D11Device1> m_destDevice; + ComPtr<ID3D11Texture2D> m_destTex; + ComPtr<IDXGIKeyedMutex> m_destMutex; + + ComPtr<ID3D11Texture2D> m_outputTex; +}; + class D3D11TextureConverter : public TextureConverterBackend { public: @@ -68,9 +88,14 @@ public: TextureSet *getTextures(AVFrame *frame) override; static void SetupDecoderTextures(AVCodecContext *s); + +private: + ComPtr<ID3D11Device1> m_rhiDevice; + ComPtr<ID3D11DeviceContext> m_rhiCtx; + TextureBridge m_bridge; }; -} +} // namespace QFFmpeg QT_END_NAMESPACE |