From 186db51d54bcbd4d5096bea1e4396966c2dad001 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 11 Mar 2024 15:15:19 +0100 Subject: [PATCH 15/21] libcamera: debayer_cpu: Add BGR888 output support BGR888 is RGB888 with the red and blue pixels swapped, adjust the debayering to swap the red and blue pixels in the bayer pattern to add support for writing formats::BGR888. Tested-by: Bryan O'Donoghue # sc8280xp Lenovo x13s Tested-by: Pavel Machek Reviewed-by: Milan Zamazal Signed-off-by: Hans de Goede Reviewed-by: Stefan Klug --- src/libcamera/software_isp/debayer_cpu.cpp | 42 +++++++++++++++++++--- src/libcamera/software_isp/debayer_cpu.h | 1 + 2 files changed, 38 insertions(+), 5 deletions(-) diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp index eb1c2718..a1692693 100644 --- a/src/libcamera/software_isp/debayer_cpu.cpp +++ b/src/libcamera/software_isp/debayer_cpu.cpp @@ -268,7 +268,7 @@ int DebayerCpu::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &conf config.bpp = (bayerFormat.bitDepth + 7) & ~7; config.patternSize.width = 2; config.patternSize.height = 2; - config.outputFormats = std::vector({ formats::RGB888 }); + config.outputFormats = std::vector({ formats::RGB888, formats::BGR888 }); return 0; } @@ -278,7 +278,7 @@ int DebayerCpu::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &conf config.bpp = 10; config.patternSize.width = 4; /* 5 bytes per *4* pixels */ config.patternSize.height = 2; - config.outputFormats = std::vector({ formats::RGB888 }); + config.outputFormats = std::vector({ formats::RGB888, formats::BGR888 }); return 0; } @@ -289,7 +289,7 @@ int DebayerCpu::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &conf int DebayerCpu::getOutputConfig(PixelFormat outputFormat, DebayerOutputConfig &config) { - if (outputFormat == formats::RGB888) { + if (outputFormat == formats::RGB888 || outputFormat == formats::BGR888) { config.bpp = 24; return 0; } @@ -325,13 +325,41 @@ int DebayerCpu::setupStandardBayerOrder(BayerFormat::Order order) return 0; } -/* TODO: this ignores outputFormat since there is only 1 supported outputFormat for now */ -int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, [[maybe_unused]] PixelFormat outputFormat) +int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, PixelFormat outputFormat) { BayerFormat bayerFormat = BayerFormat::fromPixelFormat(inputFormat); xShift_ = 0; + swapRedBlueGains_ = false; + + switch (outputFormat) { + case formats::RGB888: + break; + case formats::BGR888: + /* Swap R and B in bayer order to generate BGR888 instead of RGB888 */ + swapRedBlueGains_ = true; + + switch (bayerFormat.order) { + case BayerFormat::BGGR: + bayerFormat.order = BayerFormat::RGGB; + break; + case BayerFormat::GBRG: + bayerFormat.order = BayerFormat::GRBG; + break; + case BayerFormat::GRBG: + bayerFormat.order = BayerFormat::GBRG; + break; + case BayerFormat::RGGB: + bayerFormat.order = BayerFormat::BGGR; + break; + default: + goto invalid_fmt; + } + break; + default: + goto invalid_fmt; + } if ((bayerFormat.bitDepth == 8 || bayerFormat.bitDepth == 10 || bayerFormat.bitDepth == 12) && bayerFormat.packing == BayerFormat::Packing::None && @@ -378,6 +406,7 @@ int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, [[maybe_unused]] Pi } } +invalid_fmt: LOG(Debayer, Error) << "Unsupported input output format combination"; return -EINVAL; } @@ -661,6 +690,9 @@ void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams gamma_correction_ = params.gamma; } + if (swapRedBlueGains_) + std::swap(params.gainR, params.gainB); + for (unsigned int i = 0; i < kRGBLookupSize; i++) { constexpr unsigned int div = kRGBLookupSize * DebayerParams::kGain10 / kGammaLookupSize; diff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h index fd1fa180..5f44fc65 100644 --- a/src/libcamera/software_isp/debayer_cpu.h +++ b/src/libcamera/software_isp/debayer_cpu.h @@ -145,6 +145,7 @@ private: unsigned int lineBufferIndex_; unsigned int xShift_; /* Offset of 0/1 applied to window_.x */ bool enableInputMemcpy_; + bool swapRedBlueGains_; float gamma_correction_; unsigned int measuredFrames_; int64_t frameProcessTime_; -- 2.43.2