diff options
Diffstat (limited to 'src/libcamera/software_isp/debayer_cpu.cpp')
| -rw-r--r-- | src/libcamera/software_isp/debayer_cpu.cpp | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp index 5b553162..88d6578b 100644 --- a/src/libcamera/software_isp/debayer_cpu.cpp +++ b/src/libcamera/software_isp/debayer_cpu.cpp @@ -35,7 +35,7 @@ namespace libcamera { * \param[in] stats Pointer to the stats object to use */ DebayerCpu::DebayerCpu(std::unique_ptr<SwStatsCpu> stats) - : stats_(std::move(stats)), gammaCorrection_(1.0) + : stats_(std::move(stats)), gammaCorrection_(1.0), blackLevel_(0) { /* * Reading from uncached buffers may be very slow. @@ -699,11 +699,16 @@ void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams } /* Apply DebayerParams */ - if (params.gamma != gammaCorrection_) { - for (unsigned int i = 0; i < kGammaLookupSize; i++) - gamma_[i] = UINT8_MAX * powf(i / (kGammaLookupSize - 1.0), params.gamma); + if (params.gamma != gammaCorrection_ || params.blackLevel != blackLevel_) { + const unsigned int blackIndex = + params.blackLevel * kGammaLookupSize / 256; + std::fill(gamma_.begin(), gamma_.begin() + blackIndex, 0); + const float divisor = kGammaLookupSize - blackIndex - 1.0; + for (unsigned int i = blackIndex; i < kGammaLookupSize; i++) + gamma_[i] = UINT8_MAX * powf((i - blackIndex) / divisor, params.gamma); gammaCorrection_ = params.gamma; + blackLevel_ = params.blackLevel; } if (swapRedBlueGains_) |