feat: add vaapi path for video wallpapers on generic gpus

Plugins/ZShell/Wallpaper/videodecoder.cpp

@@ -0,0 +1,117 @@
+#include "videodecoder.hpp"
+
+#include <QtGlobal>
+
+#ifdef ZHAVE_VIDEO
+#include "nvidiaplayer.hpp"
+#endif
+
+#ifdef ZHAVE_FFMPEG
+#include "vaapiplayer.hpp"
+#endif
+
+namespace ZShell::wallpaper {
+
+VideoDecoder::~VideoDecoder() = default;
+
+void VideoDecoder::setReadyCallback(std::function<void()> callback) {
+	m_readyCb = std::move(callback);
+}
+
+void VideoDecoder::setFrameCallback(std::function<void()> callback) {
+	m_frameCb = std::move(callback);
+}
+
+uint32_t VideoDecoder::textureId() const {
+	return m_texY;
+}
+
+uint32_t VideoDecoder::chromaTextureId() const {
+	return m_texUV;
+}
+
+int VideoDecoder::colorMatrix() const {
+	return m_matrix;
+}
+
+int VideoDecoder::colorRange() const {
+	return m_range;
+}
+
+QSize VideoDecoder::frameSize() const {
+	return m_size;
+}
+
+namespace {
+
+VideoBackend backendFromEnvironment() {
+	if (qEnvironmentVariableIsSet("ZBAR_WALLPAPER_VAAPI"))
+		return VideoBackend::Vaapi;
+	if (qEnvironmentVariableIsSet("ZBAR_WALLPAPER_NVIDIA"))
+		return VideoBackend::Nvidia;
+	return VideoBackend::Auto;
+}
+
+VideoBackend selectBackend(VideoBackend hint) {
+	if (hint == VideoBackend::None) return VideoBackend::None;
+	if (hint == VideoBackend::Auto) hint = backendFromEnvironment();
+
+	if (hint == VideoBackend::Nvidia) {
+#ifdef ZHAVE_VIDEO
+		if (NvidiaPlayer::available()) return VideoBackend::Nvidia;
+#endif
+		return VideoBackend::None;
+	}
+
+	if (hint == VideoBackend::Vaapi) {
+#ifdef ZHAVE_FFMPEG
+		if (VaapiPlayer::available()) return VideoBackend::Vaapi;
+#endif
+		return VideoBackend::None;
+	}
+
+#ifdef ZHAVE_VIDEO
+	if (NvidiaPlayer::available()) return VideoBackend::Nvidia;
+#endif
+
+#ifdef ZHAVE_FFMPEG
+	if (VaapiPlayer::available()) return VideoBackend::Vaapi;
+#endif
+
+	return VideoBackend::None;
+}
+
+} // namespace
+
+std::unique_ptr<VideoDecoder> createVideoDecoder(
+	EGLDisplay display, VideoBackend hint) {
+	switch (selectBackend(hint)) {
+#ifdef ZHAVE_VIDEO
+	case VideoBackend::Nvidia:
+		return std::make_unique<NvidiaPlayer>(display);
+#endif
+#ifdef ZHAVE_FFMPEG
+	case VideoBackend::Vaapi:
+		return std::make_unique<VaapiPlayer>(display);
+#endif
+	case VideoBackend::Auto:
+	case VideoBackend::None:
+		break;
+	}
+	return nullptr;
+}
+
+const char* resolveBackendName(VideoBackend hint) {
+	switch (selectBackend(hint)) {
+	case VideoBackend::Nvidia:
+		return "nvidia";
+	case VideoBackend::Vaapi:
+		return "vaapi";
+	case VideoBackend::Auto:
+	case VideoBackend::None:
+		break;
+	}
+	return "mpv";
+}
+
+} // namespace ZShell::wallpaper