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libcamera: debayer_cpu: Add BGR888 output support

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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 <bryan.odonoghue@linaro.org> # sc8280xp Lenovo x13s
Tested-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Hans de Goede 2024-04-16 11:13:52 +02:00 • committed by Kieran Bingham
parent 17c58df4b4
commit 09fb65486e
2 changed files with 43 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

50
src/libcamera/software_isp/debayer_cpu.cpp
View file

@ -281,7 +281,7 @@ int DebayerCpu::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &conf
config.bpp = (bayerFormat.bitDepth + 7) & ~7; config.bpp = (bayerFormat.bitDepth + 7) & ~7;
config.patternSize.width = 2; config.patternSize.width = 2;
config.patternSize.height = 2; config.patternSize.height = 2;
config.outputFormats = std::vector<PixelFormat>({ formats::RGB888 }); config.outputFormats = std::vector<PixelFormat>({ formats::RGB888, formats::BGR888 });
return 0; return 0;
} }
@ -291,7 +291,7 @@ int DebayerCpu::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &conf
config.bpp = 10; config.bpp = 10;
config.patternSize.width = 4; /* 5 bytes per *4* pixels */ config.patternSize.width = 4; /* 5 bytes per *4* pixels */
config.patternSize.height = 2; config.patternSize.height = 2;
config.outputFormats = std::vector<PixelFormat>({ formats::RGB888 }); config.outputFormats = std::vector<PixelFormat>({ formats::RGB888, formats::BGR888 });
return 0; return 0;
} }
@ -302,7 +302,7 @@ int DebayerCpu::getInputConfig(PixelFormat inputFormat, DebayerInputConfig &conf
int DebayerCpu::getOutputConfig(PixelFormat outputFormat, DebayerOutputConfig &config) int DebayerCpu::getOutputConfig(PixelFormat outputFormat, DebayerOutputConfig &config)
{ {
if (outputFormat == formats::RGB888) { if (outputFormat == formats::RGB888 || outputFormat == formats::BGR888) {
config.bpp = 24; config.bpp = 24;
return 0; return 0;
} }
@ -338,14 +338,46 @@ int DebayerCpu::setupStandardBayerOrder(BayerFormat::Order order)
return 0; return 0;
} }
/* \todo This ignores outputFormat since there is only 1 supported outputFormat int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, PixelFormat outputFormat)
for now */
int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, [[maybe_unused]] PixelFormat outputFormat)
{ {
BayerFormat bayerFormat = BayerFormat bayerFormat =
BayerFormat::fromPixelFormat(inputFormat); BayerFormat::fromPixelFormat(inputFormat);
xShift_ = 0; xShift_ = 0;
swapRedBlueGains_ = false;
auto invalidFmt = []() -> int {
LOG(Debayer, Error) << "Unsupported input output format combination";
return -EINVAL;
};
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:
return invalidFmt();
}
break;
default:
return invalidFmt();
}
if ((bayerFormat.bitDepth == 8 || bayerFormat.bitDepth == 10 || bayerFormat.bitDepth == 12) && if ((bayerFormat.bitDepth == 8 || bayerFormat.bitDepth == 10 || bayerFormat.bitDepth == 12) &&
bayerFormat.packing == BayerFormat::Packing::None && bayerFormat.packing == BayerFormat::Packing::None &&
@ -392,8 +424,7 @@ int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, [[maybe_unused]] Pi
} }
} }
LOG(Debayer, Error) << "Unsupported input output format combination"; return invalidFmt();
return -EINVAL;
} }
int DebayerCpu::configure(const StreamConfiguration &inputCfg, int DebayerCpu::configure(const StreamConfiguration &inputCfg,
@ -675,6 +706,9 @@ void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams
gammaCorrection_ = params.gamma; gammaCorrection_ = params.gamma;
} }
if (swapRedBlueGains_)
std::swap(params.gainR, params.gainB);
for (unsigned int i = 0; i < kRGBLookupSize; i++) { for (unsigned int i = 0; i < kRGBLookupSize; i++) {
constexpr unsigned int div = constexpr unsigned int div =
kRGBLookupSize * DebayerParams::kGain10 / kGammaLookupSize; kRGBLookupSize * DebayerParams::kGain10 / kGammaLookupSize;

1
src/libcamera/software_isp/debayer_cpu.h
View file

@ -145,6 +145,7 @@ private:
unsigned int lineBufferIndex_; unsigned int lineBufferIndex_;
unsigned int xShift_; /* Offset of 0/1 applied to window_.x */ unsigned int xShift_; /* Offset of 0/1 applied to window_.x */
bool enableInputMemcpy_; bool enableInputMemcpy_;
bool swapRedBlueGains_;
float gammaCorrection_; float gammaCorrection_;
unsigned int measuredFrames_; unsigned int measuredFrames_;
int64_t frameProcessTime_; int64_t frameProcessTime_;