feat: add vaapi path for video wallpapers on generic gpus

Plugins/ZShell/Wallpaper/videodecoder.hpp

@@ -0,0 +1,58 @@
+#pragma once
+
+#include <EGL/egl.h>
+
+#include <cstdint>
+#include <functional>
+#include <memory>
+
+#include <QSize>
+#include <QString>
+
+namespace ZShell::wallpaper {
+
+class VideoDecoder {
+	public:
+	virtual ~VideoDecoder();
+
+	void setReadyCallback(std::function<void()> callback);
+	void setFrameCallback(std::function<void()> callback);
+
+	virtual bool start(const QString& path) = 0;
+	virtual void stop() = 0;
+
+	virtual bool importCurrentFrame() = 0;
+	virtual void deleteTexture() = 0;
+
+	[[nodiscard]] uint32_t textureId() const;
+	[[nodiscard]] uint32_t chromaTextureId() const;
+	[[nodiscard]] int colorMatrix() const;
+	[[nodiscard]] int colorRange() const;
+	[[nodiscard]] QSize frameSize() const;
+
+	[[nodiscard]] virtual const char* backendName() const = 0;
+
+	protected:
+	std::function<void()> m_readyCb;
+	std::function<void()> m_frameCb;
+
+	uint32_t m_texY = 0;
+	uint32_t m_texUV = 0;
+	int m_matrix = 1;
+	int m_range = 0;
+	QSize m_size;
+};
+
+enum class VideoBackend {
+	Auto,
+	Nvidia,
+	Vaapi,
+	None,
+};
+
+std::unique_ptr<VideoDecoder> createVideoDecoder(
+	EGLDisplay display, VideoBackend hint = VideoBackend::Auto);
+
+const char* resolveBackendName(VideoBackend hint = VideoBackend::Auto);
+
+} // namespace ZShell::wallpaper