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>

1 files changed, 0 insertions, 835 deletions

diff --git a/src/qcam/viewfinder_gl.cpp b/src/qcam/viewfinder_gl.cpp
deleted file mode 100644
index 38ddad58..00000000
--- a/src/qcam/viewfinder_gl.cpp
+++ /dev/null
@@ -1,835 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2020, Linaro
- *
- * viewfinderGL.cpp - OpenGL Viewfinder for rendering by OpenGL shader
- */
-
-#include "viewfinder_gl.h"
-
-#include <array>
-
-#include <QByteArray>
-#include <QFile>
-#include <QImage>
-#include <QStringList>
-
-#include <libcamera/formats.h>
-
-#include "../cam/image.h"
-
-static const QList<libcamera::PixelFormat> supportedFormats{
-	/* YUV - packed (single plane) */
-	libcamera::formats::UYVY,
-	libcamera::formats::VYUY,
-	libcamera::formats::YUYV,
-	libcamera::formats::YVYU,
-	/* YUV - semi planar (two planes) */
-	libcamera::formats::NV12,
-	libcamera::formats::NV21,
-	libcamera::formats::NV16,
-	libcamera::formats::NV61,
-	libcamera::formats::NV24,
-	libcamera::formats::NV42,
-	/* YUV - fully planar (three planes) */
-	libcamera::formats::YUV420,
-	libcamera::formats::YVU420,
-	/* RGB */
-	libcamera::formats::ABGR8888,
-	libcamera::formats::ARGB8888,
-	libcamera::formats::BGRA8888,
-	libcamera::formats::RGBA8888,
-	libcamera::formats::BGR888,
-	libcamera::formats::RGB888,
-	/* Raw Bayer 8-bit */
-	libcamera::formats::SBGGR8,
-	libcamera::formats::SGBRG8,
-	libcamera::formats::SGRBG8,
-	libcamera::formats::SRGGB8,
-	/* Raw Bayer 10-bit packed */
-	libcamera::formats::SBGGR10_CSI2P,
-	libcamera::formats::SGBRG10_CSI2P,
-	libcamera::formats::SGRBG10_CSI2P,
-	libcamera::formats::SRGGB10_CSI2P,
-	/* Raw Bayer 12-bit packed */
-	libcamera::formats::SBGGR12_CSI2P,
-	libcamera::formats::SGBRG12_CSI2P,
-	libcamera::formats::SGRBG12_CSI2P,
-	libcamera::formats::SRGGB12_CSI2P,
-};
-
-ViewFinderGL::ViewFinderGL(QWidget *parent)
-	: QOpenGLWidget(parent), buffer_(nullptr),
-	  colorSpace_(libcamera::ColorSpace::Raw), image_(nullptr),
-	  vertexBuffer_(QOpenGLBuffer::VertexBuffer)
-{
-}
-
-ViewFinderGL::~ViewFinderGL()
-{
-	removeShader();
-}
-
-const QList<libcamera::PixelFormat> &ViewFinderGL::nativeFormats() const
-{
-	return supportedFormats;
-}
-
-int ViewFinderGL::setFormat(const libcamera::PixelFormat &format, const QSize &size,
-			    const libcamera::ColorSpace &colorSpace,
-			    unsigned int stride)
-{
-	if (format != format_ || colorSpace != colorSpace_) {
-		/*
-		 * If the fragment already exists, remove it and create a new
-		 * one for the new format.
-		 */
-		if (shaderProgram_.isLinked()) {
-			shaderProgram_.release();
-			shaderProgram_.removeShader(fragmentShader_.get());
-			fragmentShader_.reset();
-		}
-
-		if (!selectFormat(format))
-			return -1;
-
-		selectColorSpace(colorSpace);
-
-		format_ = format;
-		colorSpace_ = colorSpace;
-	}
-
-	size_ = size;
-	stride_ = stride;
-
-	updateGeometry();
-	return 0;
-}
-
-void ViewFinderGL::stop()
-{
-	if (buffer_) {
-		renderComplete(buffer_);
-		buffer_ = nullptr;
-		image_ = nullptr;
-	}
-}
-
-QImage ViewFinderGL::getCurrentImage()
-{
-	QMutexLocker locker(&mutex_);
-
-	return grabFramebuffer();
-}
-
-void ViewFinderGL::render(libcamera::FrameBuffer *buffer, Image *image)
-{
-	if (buffer_)
-		renderComplete(buffer_);
-
-	image_ = image;
-	update();
-	buffer_ = buffer;
-}
-
-bool ViewFinderGL::selectFormat(const libcamera::PixelFormat &format)
-{
-	bool ret = true;
-
-	/* Set min/mag filters to GL_LINEAR by default. */
-	textureMinMagFilters_ = GL_LINEAR;
-
-	/* Use identity.vert as the default vertex shader. */
-	vertexShaderFile_ = ":identity.vert";
-
-	fragmentShaderDefines_.clear();
-
-	switch (format) {
-	case libcamera::formats::NV12:
-		horzSubSample_ = 2;
-		vertSubSample_ = 2;
-		fragmentShaderDefines_.append("#define YUV_PATTERN_UV");
-		fragmentShaderFile_ = ":YUV_2_planes.frag";
-		break;
-	case libcamera::formats::NV21:
-		horzSubSample_ = 2;
-		vertSubSample_ = 2;
-		fragmentShaderDefines_.append("#define YUV_PATTERN_VU");
-		fragmentShaderFile_ = ":YUV_2_planes.frag";
-		break;
-	case libcamera::formats::NV16:
-		horzSubSample_ = 2;
-		vertSubSample_ = 1;
-		fragmentShaderDefines_.append("#define YUV_PATTERN_UV");
-		fragmentShaderFile_ = ":YUV_2_planes.frag";
-		break;
-	case libcamera::formats::NV61:
-		horzSubSample_ = 2;
-		vertSubSample_ = 1;
-		fragmentShaderDefines_.append("#define YUV_PATTERN_VU");
-		fragmentShaderFile_ = ":YUV_2_planes.frag";
-		break;
-	case libcamera::formats::NV24:
-		horzSubSample_ = 1;
-		vertSubSample_ = 1;
-		fragmentShaderDefines_.append("#define YUV_PATTERN_UV");
-		fragmentShaderFile_ = ":YUV_2_planes.frag";
-		break;
-	case libcamera::formats::NV42:
-		horzSubSample_ = 1;
-		vertSubSample_ = 1;
-		fragmentShaderDefines_.append("#define YUV_PATTERN_VU");
-		fragmentShaderFile_ = ":YUV_2_planes.frag";
-		break;
-	case libcamera::formats::YUV420:
-		horzSubSample_ = 2;
-		vertSubSample_ = 2;
-		fragmentShaderFile_ = ":YUV_3_planes.frag";
-		break;
-	case libcamera::formats::YVU420:
-		horzSubSample_ = 2;
-		vertSubSample_ = 2;
-		fragmentShaderFile_ = ":YUV_3_planes.frag";
-		break;
-	case libcamera::formats::UYVY:
-		fragmentShaderDefines_.append("#define YUV_PATTERN_UYVY");
-		fragmentShaderFile_ = ":YUV_packed.frag";
-		break;
-	case libcamera::formats::VYUY:
-		fragmentShaderDefines_.append("#define YUV_PATTERN_VYUY");
-		fragmentShaderFile_ = ":YUV_packed.frag";
-		break;
-	case libcamera::formats::YUYV:
-		fragmentShaderDefines_.append("#define YUV_PATTERN_YUYV");
-		fragmentShaderFile_ = ":YUV_packed.frag";
-		break;
-	case libcamera::formats::YVYU:
-		fragmentShaderDefines_.append("#define YUV_PATTERN_YVYU");
-		fragmentShaderFile_ = ":YUV_packed.frag";
-		break;
-	case libcamera::formats::ABGR8888:
-		fragmentShaderDefines_.append("#define RGB_PATTERN rgb");
-		fragmentShaderFile_ = ":RGB.frag";
-		break;
-	case libcamera::formats::ARGB8888:
-		fragmentShaderDefines_.append("#define RGB_PATTERN bgr");
-		fragmentShaderFile_ = ":RGB.frag";
-		break;
-	case libcamera::formats::BGRA8888:
-		fragmentShaderDefines_.append("#define RGB_PATTERN gba");
-		fragmentShaderFile_ = ":RGB.frag";
-		break;
-	case libcamera::formats::RGBA8888:
-		fragmentShaderDefines_.append("#define RGB_PATTERN abg");
-		fragmentShaderFile_ = ":RGB.frag";
-		break;
-	case libcamera::formats::BGR888:
-		fragmentShaderDefines_.append("#define RGB_PATTERN rgb");
-		fragmentShaderFile_ = ":RGB.frag";
-		break;
-	case libcamera::formats::RGB888:
-		fragmentShaderDefines_.append("#define RGB_PATTERN bgr");
-		fragmentShaderFile_ = ":RGB.frag";
-		break;
-	case libcamera::formats::SBGGR8:
-		firstRed_.setX(1.0);
-		firstRed_.setY(1.0);
-		vertexShaderFile_ = ":bayer_8.vert";
-		fragmentShaderFile_ = ":bayer_8.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SGBRG8:
-		firstRed_.setX(0.0);
-		firstRed_.setY(1.0);
-		vertexShaderFile_ = ":bayer_8.vert";
-		fragmentShaderFile_ = ":bayer_8.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SGRBG8:
-		firstRed_.setX(1.0);
-		firstRed_.setY(0.0);
-		vertexShaderFile_ = ":bayer_8.vert";
-		fragmentShaderFile_ = ":bayer_8.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SRGGB8:
-		firstRed_.setX(0.0);
-		firstRed_.setY(0.0);
-		vertexShaderFile_ = ":bayer_8.vert";
-		fragmentShaderFile_ = ":bayer_8.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SBGGR10_CSI2P:
-		firstRed_.setX(1.0);
-		firstRed_.setY(1.0);
-		fragmentShaderDefines_.append("#define RAW10P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SGBRG10_CSI2P:
-		firstRed_.setX(0.0);
-		firstRed_.setY(1.0);
-		fragmentShaderDefines_.append("#define RAW10P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SGRBG10_CSI2P:
-		firstRed_.setX(1.0);
-		firstRed_.setY(0.0);
-		fragmentShaderDefines_.append("#define RAW10P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SRGGB10_CSI2P:
-		firstRed_.setX(0.0);
-		firstRed_.setY(0.0);
-		fragmentShaderDefines_.append("#define RAW10P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SBGGR12_CSI2P:
-		firstRed_.setX(1.0);
-		firstRed_.setY(1.0);
-		fragmentShaderDefines_.append("#define RAW12P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SGBRG12_CSI2P:
-		firstRed_.setX(0.0);
-		firstRed_.setY(1.0);
-		fragmentShaderDefines_.append("#define RAW12P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SGRBG12_CSI2P:
-		firstRed_.setX(1.0);
-		firstRed_.setY(0.0);
-		fragmentShaderDefines_.append("#define RAW12P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	case libcamera::formats::SRGGB12_CSI2P:
-		firstRed_.setX(0.0);
-		firstRed_.setY(0.0);
-		fragmentShaderDefines_.append("#define RAW12P");
-		fragmentShaderFile_ = ":bayer_1x_packed.frag";
-		textureMinMagFilters_ = GL_NEAREST;
-		break;
-	default:
-		ret = false;
-		qWarning() << "[ViewFinderGL]:"
-			   << "format not supported.";
-		break;
-	};
-
-	return ret;
-}
-
-void ViewFinderGL::selectColorSpace(const libcamera::ColorSpace &colorSpace)
-{
-	std::array<double, 9> yuv2rgb;
-
-	/* OpenGL stores arrays in column-major order. */
-	switch (colorSpace.ycbcrEncoding) {
-	case libcamera::ColorSpace::YcbcrEncoding::None:
-	default:
-		yuv2rgb = {
-			1.0000,  0.0000,  0.0000,
-			0.0000,  1.0000,  0.0000,
-			0.0000,  0.0000,  1.0000,
-		};
-		break;
-
-	case libcamera::ColorSpace::YcbcrEncoding::Rec601:
-		yuv2rgb = {
-			1.0000,  1.0000,  1.0000,
-			0.0000, -0.3441,  1.7720,
-			1.4020, -0.7141,  0.0000,
-		};
-		break;
-
-	case libcamera::ColorSpace::YcbcrEncoding::Rec709:
-		yuv2rgb = {
-			1.0000,  1.0000,  1.0000,
-			0.0000, -0.1873,  1.8856,
-			1.5748, -0.4681,  0.0000,
-		};
-		break;
-
-	case libcamera::ColorSpace::YcbcrEncoding::Rec2020:
-		yuv2rgb = {
-			1.0000,  1.0000,  1.0000,
-			0.0000, -0.1646,  1.8814,
-			1.4746, -0.5714,  0.0000,
-		};
-		break;
-	}
-
-	double offset;
-
-	switch (colorSpace.range) {
-	case libcamera::ColorSpace::Range::Full:
-	default:
-		offset = 0.0;
-		break;
-
-	case libcamera::ColorSpace::Range::Limited:
-		offset = 16.0;
-
-		for (unsigned int i = 0; i < 3; ++i)
-			yuv2rgb[i] *= 255.0 / 219.0;
-		for (unsigned int i = 4; i < 9; ++i)
-			yuv2rgb[i] *= 255.0 / 224.0;
-		break;
-	}
-
-	QStringList matrix;
-
-	for (double coeff : yuv2rgb)
-		matrix.append(QString::number(coeff, 'f'));
-
-	fragmentShaderDefines_.append("#define YUV2RGB_MATRIX " + matrix.join(", "));
-	fragmentShaderDefines_.append(QString("#define YUV2RGB_Y_OFFSET %1")
-		.arg(offset, 0, 'f', 1));
-}
-
-bool ViewFinderGL::createVertexShader()
-{
-	/* Create Vertex Shader */
-	vertexShader_ = std::make_unique<QOpenGLShader>(QOpenGLShader::Vertex, this);
-
-	/* Compile the vertex shader */
-	if (!vertexShader_->compileSourceFile(vertexShaderFile_)) {
-		qWarning() << "[ViewFinderGL]:" << vertexShader_->log();
-		return false;
-	}
-
-	shaderProgram_.addShader(vertexShader_.get());
-	return true;
-}
-
-bool ViewFinderGL::createFragmentShader()
-{
-	int attributeVertex;
-	int attributeTexture;
-
-	/*
-	 * Create the fragment shader, compile it, and add it to the shader
-	 * program. The #define macros stored in fragmentShaderDefines_, if
-	 * any, are prepended to the source code.
-	 */
-	fragmentShader_ = std::make_unique<QOpenGLShader>(QOpenGLShader::Fragment, this);
-
-	QFile file(fragmentShaderFile_);
-	if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
-		qWarning() << "Shader" << fragmentShaderFile_ << "not found";
-		return false;
-	}
-
-	QString defines = fragmentShaderDefines_.join('\n') + "\n";
-	QByteArray src = file.readAll();
-	src.prepend(defines.toUtf8());
-
-	if (!fragmentShader_->compileSourceCode(src)) {
-		qWarning() << "[ViewFinderGL]:" << fragmentShader_->log();
-		return false;
-	}
-
-	shaderProgram_.addShader(fragmentShader_.get());
-
-	/* Link shader pipeline */
-	if (!shaderProgram_.link()) {
-		qWarning() << "[ViewFinderGL]:" << shaderProgram_.log();
-		close();
-	}
-
-	/* Bind shader pipeline for use */
-	if (!shaderProgram_.bind()) {
-		qWarning() << "[ViewFinderGL]:" << shaderProgram_.log();
-		close();
-	}
-
-	attributeVertex = shaderProgram_.attributeLocation("vertexIn");
-	attributeTexture = shaderProgram_.attributeLocation("textureIn");
-
-	shaderProgram_.enableAttributeArray(attributeVertex);
-	shaderProgram_.setAttributeBuffer(attributeVertex,
-					  GL_FLOAT,
-					  0,
-					  2,
-					  2 * sizeof(GLfloat));
-
-	shaderProgram_.enableAttributeArray(attributeTexture);
-	shaderProgram_.setAttributeBuffer(attributeTexture,
-					  GL_FLOAT,
-					  8 * sizeof(GLfloat),
-					  2,
-					  2 * sizeof(GLfloat));
-
-	textureUniformY_ = shaderProgram_.uniformLocation("tex_y");
-	textureUniformU_ = shaderProgram_.uniformLocation("tex_u");
-	textureUniformV_ = shaderProgram_.uniformLocation("tex_v");
-	textureUniformStep_ = shaderProgram_.uniformLocation("tex_step");
-	textureUniformSize_ = shaderProgram_.uniformLocation("tex_size");
-	textureUniformStrideFactor_ = shaderProgram_.uniformLocation("stride_factor");
-	textureUniformBayerFirstRed_ = shaderProgram_.uniformLocation("tex_bayer_first_red");
-
-	/* Create the textures. */
-	for (std::unique_ptr<QOpenGLTexture> &texture : textures_) {
-		if (texture)
-			continue;
-
-		texture = std::make_unique<QOpenGLTexture>(QOpenGLTexture::Target2D);
-		texture->create();
-	}
-
-	return true;
-}
-
-void ViewFinderGL::configureTexture(QOpenGLTexture &texture)
-{
-	glBindTexture(GL_TEXTURE_2D, texture.textureId());
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
-			textureMinMagFilters_);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
-			textureMinMagFilters_);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-}
-
-void ViewFinderGL::removeShader()
-{
-	if (shaderProgram_.isLinked()) {
-		shaderProgram_.release();
-		shaderProgram_.removeAllShaders();
-	}
-}
-
-void ViewFinderGL::initializeGL()
-{
-	initializeOpenGLFunctions();
-	glEnable(GL_TEXTURE_2D);
-	glDisable(GL_DEPTH_TEST);
-
-	static const GLfloat coordinates[2][4][2]{
-		{
-			/* Vertex coordinates */
-			{ -1.0f, -1.0f },
-			{ -1.0f, +1.0f },
-			{ +1.0f, +1.0f },
-			{ +1.0f, -1.0f },
-		},
-		{
-			/* Texture coordinates */
-			{ 0.0f, 1.0f },
-			{ 0.0f, 0.0f },
-			{ 1.0f, 0.0f },
-			{ 1.0f, 1.0f },
-		},
-	};
-
-	vertexBuffer_.create();
-	vertexBuffer_.bind();
-	vertexBuffer_.allocate(coordinates, sizeof(coordinates));
-
-	/* Create Vertex Shader */
-	if (!createVertexShader())
-		qWarning() << "[ViewFinderGL]: create vertex shader failed.";
-
-	glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
-}
-
-void ViewFinderGL::doRender()
-{
-	/* Stride of the first plane, in pixels. */
-	unsigned int stridePixels;
-
-	switch (format_) {
-	case libcamera::formats::NV12:
-	case libcamera::formats::NV21:
-	case libcamera::formats::NV16:
-	case libcamera::formats::NV61:
-	case libcamera::formats::NV24:
-	case libcamera::formats::NV42:
-		/* Activate texture Y */
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_,
-			     size_.height(),
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-
-		/* Activate texture UV/VU */
-		glActiveTexture(GL_TEXTURE1);
-		configureTexture(*textures_[1]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE_ALPHA,
-			     stride_ / horzSubSample_,
-			     size_.height() / vertSubSample_,
-			     0,
-			     GL_LUMINANCE_ALPHA,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(1).data());
-		shaderProgram_.setUniformValue(textureUniformU_, 1);
-
-		stridePixels = stride_;
-		break;
-
-	case libcamera::formats::YUV420:
-		/* Activate texture Y */
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_,
-			     size_.height(),
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-
-		/* Activate texture U */
-		glActiveTexture(GL_TEXTURE1);
-		configureTexture(*textures_[1]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_ / horzSubSample_,
-			     size_.height() / vertSubSample_,
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(1).data());
-		shaderProgram_.setUniformValue(textureUniformU_, 1);
-
-		/* Activate texture V */
-		glActiveTexture(GL_TEXTURE2);
-		configureTexture(*textures_[2]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_ / horzSubSample_,
-			     size_.height() / vertSubSample_,
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(2).data());
-		shaderProgram_.setUniformValue(textureUniformV_, 2);
-
-		stridePixels = stride_;
-		break;
-
-	case libcamera::formats::YVU420:
-		/* Activate texture Y */
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_,
-			     size_.height(),
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-
-		/* Activate texture V */
-		glActiveTexture(GL_TEXTURE2);
-		configureTexture(*textures_[2]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_ / horzSubSample_,
-			     size_.height() / vertSubSample_,
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(1).data());
-		shaderProgram_.setUniformValue(textureUniformV_, 2);
-
-		/* Activate texture U */
-		glActiveTexture(GL_TEXTURE1);
-		configureTexture(*textures_[1]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_ / horzSubSample_,
-			     size_.height() / vertSubSample_,
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(2).data());
-		shaderProgram_.setUniformValue(textureUniformU_, 1);
-
-		stridePixels = stride_;
-		break;
-
-	case libcamera::formats::UYVY:
-	case libcamera::formats::VYUY:
-	case libcamera::formats::YUYV:
-	case libcamera::formats::YVYU:
-		/*
-		 * Packed YUV formats are stored in a RGBA texture to match the
-		 * OpenGL texel size with the 4 bytes repeating pattern in YUV.
-		 * The texture width is thus half of the image_ with.
-		 */
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_RGBA,
-			     stride_ / 4,
-			     size_.height(),
-			     0,
-			     GL_RGBA,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-
-		/*
-		 * The shader needs the step between two texture pixels in the
-		 * horizontal direction, expressed in texture coordinate units
-		 * ([0, 1]). There are exactly width - 1 steps between the
-		 * leftmost and rightmost texels.
-		 */
-		shaderProgram_.setUniformValue(textureUniformStep_,
-					       1.0f / (size_.width() / 2 - 1),
-					       1.0f /* not used */);
-
-		stridePixels = stride_ / 2;
-		break;
-
-	case libcamera::formats::ABGR8888:
-	case libcamera::formats::ARGB8888:
-	case libcamera::formats::BGRA8888:
-	case libcamera::formats::RGBA8888:
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_RGBA,
-			     stride_ / 4,
-			     size_.height(),
-			     0,
-			     GL_RGBA,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-
-		stridePixels = stride_ / 4;
-		break;
-
-	case libcamera::formats::BGR888:
-	case libcamera::formats::RGB888:
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_RGB,
-			     stride_ / 3,
-			     size_.height(),
-			     0,
-			     GL_RGB,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-
-		stridePixels = stride_ / 3;
-		break;
-
-	case libcamera::formats::SBGGR8:
-	case libcamera::formats::SGBRG8:
-	case libcamera::formats::SGRBG8:
-	case libcamera::formats::SRGGB8:
-	case libcamera::formats::SBGGR10_CSI2P:
-	case libcamera::formats::SGBRG10_CSI2P:
-	case libcamera::formats::SGRBG10_CSI2P:
-	case libcamera::formats::SRGGB10_CSI2P:
-	case libcamera::formats::SBGGR12_CSI2P:
-	case libcamera::formats::SGBRG12_CSI2P:
-	case libcamera::formats::SGRBG12_CSI2P:
-	case libcamera::formats::SRGGB12_CSI2P:
-		/*
-		 * Raw Bayer 8-bit, and packed raw Bayer 10-bit/12-bit formats
-		 * are stored in a GL_LUMINANCE texture. The texture width is
-		 * equal to the stride.
-		 */
-		glActiveTexture(GL_TEXTURE0);
-		configureTexture(*textures_[0]);
-		glTexImage2D(GL_TEXTURE_2D,
-			     0,
-			     GL_LUMINANCE,
-			     stride_,
-			     size_.height(),
-			     0,
-			     GL_LUMINANCE,
-			     GL_UNSIGNED_BYTE,
-			     image_->data(0).data());
-		shaderProgram_.setUniformValue(textureUniformY_, 0);
-		shaderProgram_.setUniformValue(textureUniformBayerFirstRed_,
-					       firstRed_);
-		shaderProgram_.setUniformValue(textureUniformSize_,
-					       size_.width(), /* in pixels */
-					       size_.height());
-		shaderProgram_.setUniformValue(textureUniformStep_,
-					       1.0f / (stride_ - 1),
-					       1.0f / (size_.height() - 1));
-
-		/*
-		 * The stride is already taken into account in the shaders, set
-		 * the generic stride factor to 1.0.
-		 */
-		stridePixels = size_.width();
-		break;
-
-	default:
-		stridePixels = size_.width();
-		break;
-	};
-
-	/*
-	 * Compute the stride factor for the vertex shader, to map the
-	 * horizontal texture coordinate range [0.0, 1.0] to the active portion
-	 * of the image.
-	 */
-	shaderProgram_.setUniformValue(textureUniformStrideFactor_,
-				       static_cast<float>(size_.width() - 1) /
-				       (stridePixels - 1));
-}
-
-void ViewFinderGL::paintGL()
-{
-	if (!fragmentShader_)
-		if (!createFragmentShader()) {
-			qWarning() << "[ViewFinderGL]:"
-				   << "create fragment shader failed.";
-		}
-
-	if (image_) {
-		glClearColor(0.0, 0.0, 0.0, 1.0);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-		doRender();
-		glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-	}
-}
-
-void ViewFinderGL::resizeGL(int w, int h)
-{
-	glViewport(0, 0, w, h);
-}
-
-QSize ViewFinderGL::sizeHint() const
-{
-	return size_.isValid() ? size_ : QSize(640, 480);
-}