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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-10-20 00:44:55 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-10-20 13:36:25 +0300
commit84ad104499d9efc0253dae1a60ee070ed375ad95 (patch)
treed10fd53eb79cebb28fa3f72b18b46dddb6382b83 /src/apps/qcam/viewfinder_gl.h
parentdaf3f4b59f4ea0ecb42c6a39fe909f071d3a2842 (diff)
Move test applications to src/apps/
The cam and qcam test application share code, currently through a crude hack that references the cam source files directly from the qcam meson.build file. To prepare for the introduction of hosting that code in a static library, move all applications to src/apps/. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'src/apps/qcam/viewfinder_gl.h')
-rw-r--r--src/apps/qcam/viewfinder_gl.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/src/apps/qcam/viewfinder_gl.h b/src/apps/qcam/viewfinder_gl.h
new file mode 100644
index 00000000..68c2912d
--- /dev/null
+++ b/src/apps/qcam/viewfinder_gl.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * viewfinder_GL.h - OpenGL Viewfinder for rendering by OpenGL shader
+ *
+ */
+
+#pragma once
+
+#include <array>
+#include <memory>
+
+#include <QImage>
+#include <QMutex>
+#include <QOpenGLBuffer>
+#include <QOpenGLFunctions>
+#include <QOpenGLShader>
+#include <QOpenGLShaderProgram>
+#include <QOpenGLTexture>
+#include <QOpenGLWidget>
+#include <QSize>
+
+#include <libcamera/formats.h>
+#include <libcamera/framebuffer.h>
+
+#include "viewfinder.h"
+
+class ViewFinderGL : public QOpenGLWidget,
+ public ViewFinder,
+ protected QOpenGLFunctions
+{
+ Q_OBJECT
+
+public:
+ ViewFinderGL(QWidget *parent = nullptr);
+ ~ViewFinderGL();
+
+ const QList<libcamera::PixelFormat> &nativeFormats() const override;
+
+ int setFormat(const libcamera::PixelFormat &format, const QSize &size,
+ const libcamera::ColorSpace &colorSpace,
+ unsigned int stride) override;
+ void render(libcamera::FrameBuffer *buffer, Image *image) override;
+ void stop() override;
+
+ QImage getCurrentImage() override;
+
+Q_SIGNALS:
+ void renderComplete(libcamera::FrameBuffer *buffer);
+
+protected:
+ void initializeGL() override;
+ void paintGL() override;
+ void resizeGL(int w, int h) override;
+ QSize sizeHint() const override;
+
+private:
+ bool selectFormat(const libcamera::PixelFormat &format);
+ void selectColorSpace(const libcamera::ColorSpace &colorSpace);
+
+ void configureTexture(QOpenGLTexture &texture);
+ bool createFragmentShader();
+ bool createVertexShader();
+ void removeShader();
+ void doRender();
+
+ /* Captured image size, format and buffer */
+ libcamera::FrameBuffer *buffer_;
+ libcamera::PixelFormat format_;
+ libcamera::ColorSpace colorSpace_;
+ QSize size_;
+ unsigned int stride_;
+ Image *image_;
+
+ /* Shaders */
+ QOpenGLShaderProgram shaderProgram_;
+ std::unique_ptr<QOpenGLShader> vertexShader_;
+ std::unique_ptr<QOpenGLShader> fragmentShader_;
+ QString vertexShaderFile_;
+ QString fragmentShaderFile_;
+ QStringList fragmentShaderDefines_;
+
+ /* Vertex buffer */
+ QOpenGLBuffer vertexBuffer_;
+
+ /* Textures */
+ std::array<std::unique_ptr<QOpenGLTexture>, 3> textures_;
+
+ /* Common texture parameters */
+ GLuint textureMinMagFilters_;
+
+ /* YUV texture parameters */
+ GLuint textureUniformU_;
+ GLuint textureUniformV_;
+ GLuint textureUniformY_;
+ GLuint textureUniformStep_;
+ unsigned int horzSubSample_;
+ unsigned int vertSubSample_;
+
+ /* Raw Bayer texture parameters */
+ GLuint textureUniformSize_;
+ GLuint textureUniformStrideFactor_;
+ GLuint textureUniformBayerFirstRed_;
+ QPointF firstRed_;
+
+ QMutex mutex_; /* Prevent concurrent access to image_ */
+};