diff options
Diffstat (limited to 'src/qcam/viewfinder_gl.cpp')
| -rw-r--r-- | src/qcam/viewfinder_gl.cpp | 835 |
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); -} |