diff --git a/src/libcamera/egl.cpp b/src/libcamera/egl.cpp index 89ece148b..c6b0f9a56 100644 --- a/src/libcamera/egl.cpp +++ b/src/libcamera/egl.cpp @@ -82,13 +82,13 @@ void eGL::destroyDMABufTexture(eGLImage *eglImage) // // Generate a 2D texture from an input buffer directly -void eGL::createTexture2D(eGLImage *eglImage, uint32_t width, uint32_t height, void *data) +void eGL::createTexture2D(eGLImage *eglImage, GLint format, uint32_t width, uint32_t height, void *data) { glActiveTexture(eglImage->texture_unit_); glBindTexture(GL_TEXTURE_2D, eglImage->texture_); // Generate texture, bind, associate image to texture, configure, unbind - glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, data); + glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data); // Nearest filtering glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); diff --git a/src/libcamera/software_isp/debayer_egl.cpp b/src/libcamera/software_isp/debayer_egl.cpp new file mode 100644 index 000000000..3fb155119 --- /dev/null +++ b/src/libcamera/software_isp/debayer_egl.cpp @@ -0,0 +1,587 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2024, Linaro Ltd. + * + * Authors: + * Bryan O'Donoghue + * + * debayer_cpu.cpp - EGL based debayering class + */ + +#include +#include +#include + +#include + +#include "libcamera/internal/glsl_shaders.h" +#include "debayer_egl.h" + +namespace libcamera { + +DebayerEGL::DebayerEGL(std::unique_ptr stats) + : Debayer(), stats_(std::move(stats)) +{ + eglImageBayerIn_ = eglImageRedLookup_ = eglImageBlueLookup_ = eglImageGreenLookup_ = NULL; +} + +DebayerEGL::~DebayerEGL() +{ + if (eglImageBlueLookup_) + delete eglImageBlueLookup_; + + if (eglImageGreenLookup_) + delete eglImageGreenLookup_; + + if (eglImageRedLookup_) + delete eglImageRedLookup_; + + if (eglImageBayerIn_) + delete eglImageBayerIn_; +} + +int DebayerEGL::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &config) +{ + BayerFormat bayerFormat = + BayerFormat::fromPixelFormat(inputFormat); + + if ((bayerFormat.bitDepth == 8 || bayerFormat.bitDepth == 10) && + bayerFormat.packing == BayerFormat::Packing::None && + isStandardBayerOrder(bayerFormat.order)) { + config.bpp = (bayerFormat.bitDepth + 7) & ~7; + config.patternSize.width = 2; + config.patternSize.height = 2; + config.outputFormats = std::vector({ formats::XRGB8888, + formats::ARGB8888, + formats::XBGR8888, + formats::ABGR8888 }); + return 0; + } + + if (bayerFormat.bitDepth == 10 && + bayerFormat.packing == BayerFormat::Packing::CSI2 && + isStandardBayerOrder(bayerFormat.order)) { + config.bpp = 10; + config.patternSize.width = 4; /* 5 bytes per *4* pixels */ + config.patternSize.height = 2; + config.outputFormats = std::vector({ formats::XRGB8888, + formats::ARGB8888, + formats::XBGR8888, + formats::ABGR8888 }); + return 0; + } + + LOG(Debayer, Info) + << "Unsupported input format " << inputFormat.toString(); + return -EINVAL; +} + +int DebayerEGL::getOutputConfig(PixelFormat outputFormat, DebayerOutputConfig &config) +{ + if (outputFormat == formats::XRGB8888 || outputFormat == formats::ARGB8888 || + outputFormat == formats::XBGR8888 || outputFormat == formats::ABGR8888) { + config.bpp = 32; + return 0; + } + + LOG(Debayer, Error) + << "Unsupported output format " << outputFormat.toString(); + + return -EINVAL; +} + +int DebayerEGL::getShaderVariableLocations(void) +{ + attributeVertex_ = glGetAttribLocation(programId_, "vertexIn"); + attributeTexture_ = glGetAttribLocation(programId_, "textureIn"); + + textureUniformBayerDataIn_ = glGetUniformLocation(programId_, "tex_y"); + textureUniformRedLookupDataIn_ = glGetUniformLocation(programId_, "red_param"); + textureUniformGreenLookupDataIn_ = glGetUniformLocation(programId_, "green_param"); + textureUniformBlueLookupDataIn_ = glGetUniformLocation(programId_, "blue_param"); + + textureUniformStep_ = glGetUniformLocation(programId_, "tex_step"); + textureUniformSize_ = glGetUniformLocation(programId_, "tex_size"); + textureUniformStrideFactor_ = glGetUniformLocation(programId_, "stride_factor"); + textureUniformBayerFirstRed_ = glGetUniformLocation(programId_, "tex_bayer_first_red"); + textureUniformProjMatrix_ = glGetUniformLocation(programId_, "proj_matrix"); + + LOG(Debayer, Debug) << "vertexIn " << attributeVertex_ << " textureIn " << attributeTexture_ + << " tex_y " << textureUniformBayerDataIn_ + << " red_param " << textureUniformRedLookupDataIn_ + << " green_param " << textureUniformGreenLookupDataIn_ + << " blue_param " << textureUniformBlueLookupDataIn_ + << " tex_step " << textureUniformStep_ + << " tex_size " << textureUniformSize_ + << " stride_factor " << textureUniformStrideFactor_ + << " tex_bayer_first_red " << textureUniformBayerFirstRed_ + << " proj_matrix " << textureUniformProjMatrix_; + return 0; +} + +int DebayerEGL::initBayerShaders(PixelFormat inputFormat, PixelFormat outputFormat) +{ + std::vector shaderEnv; + unsigned int fragmentShaderDataLen; + unsigned char *fragmentShaderData; + unsigned int vertexShaderDataLen; + unsigned char *vertexShaderData; + GLenum err; + + // Target gles 100 glsl requires "#version x" as first directive in shader + egl_.pushEnv(shaderEnv, "#version 100"); + + // Specify GL_OES_EGL_image_external + egl_.pushEnv(shaderEnv, "#extension GL_OES_EGL_image_external: enable"); + + // Tell shaders how to re-order output taking account of how the + // pixels are actually stored by GBM + switch (outputFormat) { + case formats::ARGB8888: + case formats::XRGB8888: + break; + case formats::ABGR8888: + case formats::XBGR8888: + egl_.pushEnv(shaderEnv, "#define SWAP_BLUE"); + break; + default: + goto invalid_fmt; + } + + // Pixel location parameters + switch (inputFormat) { + case libcamera::formats::SBGGR8: + case libcamera::formats::SBGGR10_CSI2P: + case libcamera::formats::SBGGR12_CSI2P: + firstRed_x_ = 1.0; + firstRed_y_ = 1.0; + break; + case libcamera::formats::SGBRG8: + case libcamera::formats::SGBRG10_CSI2P: + case libcamera::formats::SGBRG12_CSI2P: + firstRed_x_ = 0.0; + firstRed_y_ = 1.0; + break; + case libcamera::formats::SGRBG8: + case libcamera::formats::SGRBG10_CSI2P: + case libcamera::formats::SGRBG12_CSI2P: + firstRed_x_ = 1.0; + firstRed_y_ = 0.0; + break; + case libcamera::formats::SRGGB8: + case libcamera::formats::SRGGB10_CSI2P: + case libcamera::formats::SRGGB12_CSI2P: + firstRed_x_ = 0.0; + firstRed_y_ = 0.0; + break; + default: + goto invalid_fmt; + break; + }; + + // Shader selection + switch (inputFormat) { + case libcamera::formats::SBGGR8: + case libcamera::formats::SGBRG8: + case libcamera::formats::SGRBG8: + case libcamera::formats::SRGGB8: + fragmentShaderData = bayer_8_frag; + fragmentShaderDataLen = bayer_8_frag_len; + vertexShaderData = bayer_8_vert; + vertexShaderDataLen = bayer_8_vert_len; + break; + case libcamera::formats::SBGGR10_CSI2P: + case libcamera::formats::SGBRG10_CSI2P: + case libcamera::formats::SGRBG10_CSI2P: + case libcamera::formats::SRGGB10_CSI2P: + egl_.pushEnv(shaderEnv, "#define RAW10P"); + fragmentShaderData = bayer_1x_packed_frag; + fragmentShaderDataLen = bayer_1x_packed_frag_len; + vertexShaderData = identity_vert; + vertexShaderDataLen = identity_vert_len; + break; + case libcamera::formats::SBGGR12_CSI2P: + case libcamera::formats::SGBRG12_CSI2P: + case libcamera::formats::SGRBG12_CSI2P: + case libcamera::formats::SRGGB12_CSI2P: + egl_.pushEnv(shaderEnv, "#define RAW12P"); + fragmentShaderData = bayer_1x_packed_frag; + fragmentShaderDataLen = bayer_1x_packed_frag_len; + vertexShaderData = identity_vert; + vertexShaderDataLen = identity_vert_len; + break; + default: + goto invalid_fmt; + break; + }; + + // Flag to shaders that we have parameter gain tables + egl_.pushEnv(shaderEnv, "#define APPLY_RGB_PARAMETERS"); + + if (egl_.compileVertexShader(vertexShaderId_, vertexShaderData, vertexShaderDataLen, shaderEnv)) + goto compile_fail; + + if (egl_.compileFragmentShader(fragmentShaderId_, fragmentShaderData, fragmentShaderDataLen, shaderEnv)) + goto compile_fail; + + if (egl_.linkProgram(programId_, vertexShaderId_, fragmentShaderId_)) + goto link_fail; + + egl_.dumpShaderSource(vertexShaderId_); + egl_.dumpShaderSource(fragmentShaderId_); + + /* Ensure we set the programId_ */ + egl_.useProgram(programId_); + err = glGetError(); + if (err != GL_NO_ERROR) + goto program_fail; + + if (getShaderVariableLocations()) + goto parameters_fail; + + return 0; + +parameters_fail: + LOG(Debayer, Error) << "Program parameters fail"; + return -ENODEV; + +program_fail: + LOG(Debayer, Error) << "Use program error " << err; + return -ENODEV; + +link_fail: + LOG(Debayer, Error) << "Linking program fail"; + return -ENODEV; + +compile_fail: + LOG(Debayer, Error) << "Compile debayer shaders fail"; + return -ENODEV; + +invalid_fmt: + LOG(Debayer, Error) << "Unsupported input output format combination"; + return -EINVAL; +} + +int DebayerEGL::configure(const StreamConfiguration &inputCfg, + const std::vector> &outputCfgs, + bool ccmEnabled) +{ + if (getInputConfig(inputCfg.pixelFormat, inputConfig_) != 0) + return -EINVAL; + + if (stats_->configure(inputCfg) != 0) + return -EINVAL; + + const Size &stats_pattern_size = stats_->patternSize(); + if (inputConfig_.patternSize.width != stats_pattern_size.width || + inputConfig_.patternSize.height != stats_pattern_size.height) { + LOG(Debayer, Error) + << "mismatching stats and debayer pattern sizes for " + << inputCfg.pixelFormat.toString(); + return -EINVAL; + } + + inputConfig_.stride = inputCfg.stride; + width_ = inputCfg.size.width; + height_ = inputCfg.size.height; + ccmEnabled_ = ccmEnabled = false; + + if (outputCfgs.size() != 1) { + LOG(Debayer, Error) + << "Unsupported number of output streams: " + << outputCfgs.size(); + return -EINVAL; + } + + LOG(Debayer, Info) << "Input size " << inputCfg.size << " stride " << inputCfg.stride; + + if (gbmSurface_.initSurface(inputCfg.size.width, inputCfg.size.height)) + return -ENODEV; + + if (egl_.initEGLContext(&gbmSurface_)) + return -ENODEV; + + glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureImageUnits); + LOG(Debayer, Debug) << "Fragment shader maximum texture units " << maxTextureImageUnits; + + if (maxTextureImageUnits < DEBAYER_EGL_MIN_SIMPLE_RGB_GAIN_TEXTURE_UNITS) { + LOG(Debayer, Error) << "Fragment shader texture unit count " << maxTextureImageUnits + << " required minimum for RGB gain table lookup " << DEBAYER_EGL_MIN_SIMPLE_RGB_GAIN_TEXTURE_UNITS + << " try using an identity CCM "; + return -ENODEV; + } + // Raw bayer input as texture + eglImageBayerIn_ = new eGLImage(width_, height_, 32, GL_TEXTURE0, 0); + if (!eglImageBayerIn_) + return -ENOMEM; + + /// RGB correction tables as 2d textures + // eGL doesn't support glTexImage1D so we do a little hack with 2D to compensate + eglImageRedLookup_ = new eGLImage(DebayerParams::kRGBLookupSize, 1, 32, GL_TEXTURE1, 1); + if (!eglImageRedLookup_) + return -ENOMEM; + + eglImageGreenLookup_ = new eGLImage(DebayerParams::kRGBLookupSize, 1, 32, GL_TEXTURE2, 2); + if (!eglImageGreenLookup_) + return -ENOMEM; + + eglImageBlueLookup_ = new eGLImage(DebayerParams::kRGBLookupSize, 1, 32, GL_TEXTURE3, 3); + if (!eglImageBlueLookup_) + return -ENOMEM; + + // Create a single BO (calling gbm_surface_lock_front_buffer() again before gbm_surface_release_buffer() would create another BO) + if (gbmSurface_.mapSurface()) + return -ENODEV; + + StreamConfiguration &outputCfg = outputCfgs[0]; + SizeRange outSizeRange = sizes(inputCfg.pixelFormat, inputCfg.size); + + outputConfig_.stride = gbmSurface_.getStride(); + outputConfig_.frameSize = gbmSurface_.getFrameSize(); + + LOG(Debayer, Debug) << "Overriding stream config stride " + << outputCfg.stride << " with GBM surface stride " + << outputConfig_.stride; + outputCfg.stride = outputConfig_.stride; + + if (!outSizeRange.contains(outputCfg.size) || outputConfig_.stride != outputCfg.stride) { + LOG(Debayer, Error) + << "Invalid output size/stride: " + << "\n " << outputCfg.size << " (" << outSizeRange << ")" + << "\n " << outputCfg.stride << " (" << outputConfig_.stride << ")"; + return -EINVAL; + } + + window_.x = ((inputCfg.size.width - outputCfg.size.width) / 2) & + ~(inputConfig_.patternSize.width - 1); + window_.y = ((inputCfg.size.height - outputCfg.size.height) / 2) & + ~(inputConfig_.patternSize.height - 1); + window_.width = outputCfg.size.width; + window_.height = outputCfg.size.height; + + /* Don't pass x,y since process() already adjusts src before passing it */ + stats_->setWindow(Rectangle(window_.size())); + + LOG(Debayer, Debug) << "Input width " << inputCfg.size.width << " height " << inputCfg.size.height; + LOG(Debayer, Debug) << "Output width " << outputCfg.size.width << " height " << outputCfg.size.height; + LOG(Debayer, Debug) << "Output stride " << outputCfg.size.width << " height " << outputCfg.size.height; + + if (initBayerShaders(inputCfg.pixelFormat, outputCfg.pixelFormat)) + return -EINVAL; + + return 0; +} + +Size DebayerEGL::patternSize(PixelFormat inputFormat) +{ + DebayerEGL::DebayerInputConfig config; + + if (getInputConfig(inputFormat, config) != 0) + return {}; + + return config.patternSize; +} + +std::vector DebayerEGL::formats(PixelFormat inputFormat) +{ + DebayerEGL::DebayerInputConfig config; + + if (getInputConfig(inputFormat, config) != 0) + return std::vector(); + + return config.outputFormats; +} + +std::tuple +DebayerEGL::strideAndFrameSize(const PixelFormat &outputFormat, const Size &size) +{ + DebayerEGL::DebayerOutputConfig config; + + if (getOutputConfig(outputFormat, config) != 0) + return std::make_tuple(0, 0); + + /* round up to multiple of 8 for 64 bits alignment */ + unsigned int stride = (size.width * config.bpp / 8 + 7) & ~7; + + return std::make_tuple(stride, stride * size.height); +} + +void DebayerEGL::setShaderVariableValues(void) +{ + /* + * 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. + */ + GLfloat firstRed[] = { firstRed_x_, firstRed_y_ }; + GLfloat imgSize[] = { (GLfloat)width_, + (GLfloat)height_ }; + GLfloat Step[] = { 1.0f / (inputConfig_.stride - 1), + 1.0f / (height_ - 1) }; + GLfloat Stride = 1.0f; + GLfloat projIdentityMatrix[] = { + 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1 + }; + + // vertexIn - bayer_8.vert + glEnableVertexAttribArray(attributeVertex_); + glVertexAttribPointer(attributeVertex_, 2, GL_FLOAT, GL_TRUE, + 2 * sizeof(GLfloat), vcoordinates); + + // textureIn - bayer_8.vert + glEnableVertexAttribArray(attributeTexture_); + glVertexAttribPointer(attributeTexture_, 2, GL_FLOAT, GL_TRUE, + 2 * sizeof(GLfloat), tcoordinates); + + // Set the sampler2D to the respective texture unit for each texutre + // To simultaneously sample multiple textures we need to use multiple + // texture units + glUniform1i(textureUniformBayerDataIn_, eglImageBayerIn_->texture_unit_uniform_id_); + glUniform1i(textureUniformRedLookupDataIn_, eglImageRedLookup_->texture_unit_uniform_id_); + glUniform1i(textureUniformGreenLookupDataIn_, eglImageGreenLookup_->texture_unit_uniform_id_); + glUniform1i(textureUniformBlueLookupDataIn_, eglImageBlueLookup_->texture_unit_uniform_id_); + + // These values are: + // firstRed = tex_bayer_first_red - bayer_8.vert + // imgSize = tex_size - bayer_8.vert + // step = tex_step - bayer_8.vert + // Stride = stride_factor identity.vert + // textureUniformProjMatri = No scaling + glUniform2fv(textureUniformBayerFirstRed_, 1, firstRed); + glUniform2fv(textureUniformSize_, 1, imgSize); + glUniform2fv(textureUniformStep_, 1, Step); + glUniform1f(textureUniformStrideFactor_, Stride); + glUniformMatrix4fv(textureUniformProjMatrix_, 1, + GL_FALSE, projIdentityMatrix); + + LOG(Debayer, Debug) << "vertexIn " << attributeVertex_ << " textureIn " << attributeTexture_ + << " tex_y " << textureUniformBayerDataIn_ + << " red_param " << textureUniformRedLookupDataIn_ + << " green_param " << textureUniformGreenLookupDataIn_ + << " blue_param " << textureUniformBlueLookupDataIn_ + << " tex_step " << textureUniformStep_ + << " tex_size " << textureUniformSize_ + << " stride_factor " << textureUniformStrideFactor_ + << " tex_bayer_first_red " << textureUniformBayerFirstRed_; + + LOG (Debayer, Debug) << "textureUniformY_ = 0 " << + " firstRed.x " << firstRed[0] << + " firstRed.y " << firstRed[1] << + " textureUniformSize_.width " << imgSize[0] << " " + " textureUniformSize_.height " << imgSize[1] << + " textureUniformStep_.x " << Step[0] << + " textureUniformStep_.y " << Step[1] << + " textureUniformStrideFactor_ " << Stride << + " textureUniformProjMatrix_ " << textureUniformProjMatrix_; + return; +} + +void DebayerEGL::debayerGPU(MappedFrameBuffer &in, MappedFrameBuffer &out, DebayerParams ¶ms) +{ + LOG(Debayer, Debug) + << "Input height " << height_ + << " width " << width_ + << " fd " << in.getPlaneFD(0); + + // eGL context switch + egl_.makeCurrent(); + + // Greate a standard texture + // we will replace this with the DMA version at some point + egl_.createTexture2D(eglImageBayerIn_, inputConfig_.stride, height_, in.planes()[0].data()); + + // Populate bayer parameters + egl_.createTexture2D(eglImageRedLookup_, DebayerParams::kRGBLookupSize, 1, ¶ms.red); + egl_.createTexture2D(eglImageGreenLookup_, DebayerParams::kRGBLookupSize, 1, ¶ms.green); + egl_.createTexture2D(eglImageBlueLookup_, DebayerParams::kRGBLookupSize, 1, ¶ms.blue); + + // Setup the scene + setShaderVariableValues(); + glViewport(0, 0, width_, height_); + glClear(GL_COLOR_BUFFER_BIT); + glDisable(GL_BLEND); + + // Draw the scene + glDrawArrays(GL_TRIANGLE_FAN, 0, DEBAYER_OPENGL_COORDS); + + // eglclientWaitScynKhr / eglwaitsynckr ? + egl_.swapBuffers(); + + // Copy from the output GBM buffer to our output plane + // once we get render to texture working the + // explicit lock ioctl, memcpy and unlock ioctl won't be required + gbmSurface_.getFrameBufferData(out.planes()[0].data(), out.planes()[0].size()); +} + +void DebayerEGL::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params) +{ + bench_.startFrame(); + + std::vector dmaSyncers; + + dmaSyncBegin(dmaSyncers, input, output); + + setParams(params); + + /* Copy metadata from the input buffer */ + FrameMetadata &metadata = output->_d()->metadata(); + metadata.status = input->metadata().status; + metadata.sequence = input->metadata().sequence; + metadata.timestamp = input->metadata().timestamp; + + MappedFrameBuffer in(input, MappedFrameBuffer::MapFlag::Read); + MappedFrameBuffer out(output, MappedFrameBuffer::MapFlag::Write); + if (!in.isValid() || !out.isValid()) { + LOG(Debayer, Error) << "mmap-ing buffer(s) failed"; + metadata.status = FrameMetadata::FrameError; + return; + } + + debayerGPU(in, out, params); + + dmaSyncers.clear(); + + bench_.finishFrame(); + + metadata.planes()[0].bytesused = out.planes()[0].size(); + + // Calculate stats for the whole frame + stats_->processFrame(frame, 0, input); + + outputBufferReady.emit(output); + inputBufferReady.emit(input); +} + +SizeRange DebayerEGL::sizes(PixelFormat inputFormat, const Size &inputSize) +{ + Size patternSize = this->patternSize(inputFormat); + unsigned int borderHeight = patternSize.height; + + if (patternSize.isNull()) + return {}; + + /* No need for top/bottom border with a pattern height of 2 */ + if (patternSize.height == 2) + borderHeight = 0; + + /* + * For debayer interpolation a border is kept around the entire image + * and the minimum output size is pattern-height x pattern-width. + */ + if (inputSize.width < (3 * patternSize.width) || + inputSize.height < (2 * borderHeight + patternSize.height)) { + LOG(Debayer, Warning) + << "Input format size too small: " << inputSize.toString(); + return {}; + } + + return SizeRange(Size(patternSize.width, patternSize.height), + Size((inputSize.width - 2 * patternSize.width) & ~(patternSize.width - 1), + (inputSize.height - 2 * borderHeight) & ~(patternSize.height - 1)), + patternSize.width, patternSize.height); +} + +} /* namespace libcamera */ diff --git a/src/libcamera/software_isp/debayer_egl.h b/src/libcamera/software_isp/debayer_egl.h new file mode 100644 index 000000000..c0fc220f8 --- /dev/null +++ b/src/libcamera/software_isp/debayer_egl.h @@ -0,0 +1,164 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2025, Bryan O'Donoghue. + * + * Authors: + * Bryan O'Donoghue + * + * debayer_opengl.h - EGL debayer header + */ + +#pragma once + +#include +#include +#include + +#define GL_GLEXT_PROTOTYPES +#define EGL_EGLEXT_PROTOTYPES +#include +#include +#include + +#include + +#include "debayer.h" + +#include "libcamera/internal/bayer_format.h" +#include "libcamera/internal/egl.h" +#include "libcamera/internal/framebuffer.h" +#include "libcamera/internal/mapped_framebuffer.h" +#include "libcamera/internal/software_isp/benchmark.h" +#include "libcamera/internal/software_isp/swstats_cpu.h" + +namespace libcamera { + +#define DEBAYER_EGL_MIN_SIMPLE_RGB_GAIN_TEXTURE_UNITS 4 +#define DEBAYER_OPENGL_COORDS 4 + +/** + * \class DebayerEGL + * \brief Class for debayering using an EGL Shader + * + * Implements an EGL shader based debayering solution. + */ +class DebayerEGL : public Debayer +{ +public: + /** + * \brief Constructs a DebayerEGL object. + * \param[in] stats Pointer to the stats object to use. + */ + DebayerEGL(std::unique_ptr stats); + ~DebayerEGL(); + + /* + * Setup the Debayer object according to the passed in parameters. + * Return 0 on success, a negative errno value on failure + * (unsupported parameters). + */ + int configure(const StreamConfiguration &inputCfg, + const std::vector> &outputCfgs, + bool ccmEnabled); + + /* + * Get width and height at which the bayer-pattern repeats. + * Return pattern-size or an empty Size for an unsupported inputFormat. + */ + Size patternSize(PixelFormat inputFormat); + + std::vector formats(PixelFormat input); + std::tuple strideAndFrameSize(const PixelFormat &outputFormat, const Size &size); + + void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params); + + /** + * \brief Get the file descriptor for the statistics. + * + * \return the file descriptor pointing to the statistics. + */ + const SharedFD &getStatsFD() { return stats_->getStatsFD(); } + + /** + * \brief Get the output frame size. + * + * \return The output frame size. + */ + unsigned int frameSize() { return outputConfig_.frameSize; } + + SizeRange sizes(PixelFormat inputFormat, const Size &inputSize); + +private: + static int getInputConfig(PixelFormat inputFormat, DebayerInputConfig &config); + static int getOutputConfig(PixelFormat outputFormat, DebayerOutputConfig &config); + int setupStandardBayerOrder(BayerFormat::Order order); + void pushEnv(std::vector &shaderEnv, const char *str); + int initBayerShaders(PixelFormat inputFormat, PixelFormat outputFormat); + int initEGLContext(); + int generateTextures(); + int compileShaderProgram(GLuint &shaderId, GLenum shaderType, + unsigned char *shaderData, int shaderDataLen, + std::vector shaderEnv); + int linkShaderProgram(void); + int getShaderVariableLocations(); + void setShaderVariableValues(void); + void configureTexture(GLuint &texture); + void debayerGPU(MappedFrameBuffer &in, MappedFrameBuffer &out, DebayerParams ¶ms); + + // Shader program identifiers + GLuint vertexShaderId_; + GLuint fragmentShaderId_; + GLuint programId_; + enum { + BAYER_INPUT_INDEX = 0, + BAYER_OUTPUT_INDEX, + BAYER_BUF_NUM, + }; + + // Pointer to object representing input texture + eGLImage *eglImageBayerIn_; + + eGLImage *eglImageRedLookup_; + eGLImage *eglImageGreenLookup_; + eGLImage *eglImageBlueLookup_; + + // Shader parameters + float firstRed_x_; + float firstRed_y_; + GLint attributeVertex_; + GLint attributeTexture_; + GLint textureUniformStep_; + GLint textureUniformSize_; + GLint textureUniformStrideFactor_; + GLint textureUniformBayerFirstRed_; + GLint textureUniformProjMatrix_; + + GLint textureUniformBayerDataIn_; + GLint textureUniformRedLookupDataIn_; + GLint textureUniformGreenLookupDataIn_; + GLint textureUniformBlueLookupDataIn_; + + Rectangle window_; + std::unique_ptr stats_; + eGL egl_; + GBM gbmSurface_; + uint32_t width_; + uint32_t height_; + bool ccmEnabled_; + + GLfloat vcoordinates[DEBAYER_OPENGL_COORDS][2] = { + { -1.0f, -1.0f }, + { -1.0f, +1.0f }, + { +1.0f, +1.0f }, + { +1.0f, -1.0f }, + }; + + GLfloat tcoordinates[DEBAYER_OPENGL_COORDS][2] = { + { 0.0f, 1.0f }, + { 0.0f, 0.0f }, + { 1.0f, 0.0f }, + { 1.0f, 1.0f }, + }; +}; + +} /* namespace libcamera */ diff --git a/src/libcamera/software_isp/meson.build b/src/libcamera/software_isp/meson.build index 59fa5f02a..c61ac7d59 100644 --- a/src/libcamera/software_isp/meson.build +++ b/src/libcamera/software_isp/meson.build @@ -2,6 +2,7 @@ softisp_enabled = pipelines.contains('simple') summary({'SoftISP support' : softisp_enabled}, section : 'Configuration') +summary({'SoftISP GPU acceleration' : gles_headless_enabled}, section : 'Configuration') if not softisp_enabled subdir_done() @@ -14,3 +15,10 @@ libcamera_internal_sources += files([ 'software_isp.cpp', 'swstats_cpu.cpp', ]) + +if softisp_enabled and gles_headless_enabled + config_h.set('HAVE_DEBAYER_EGL', 1) + libcamera_internal_sources += files([ + 'debayer_egl.cpp', + ]) +endif