diff options
| -rw-r--r-- | src/ipa/raspberrypi/cam_helper_imx296.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/ipa/raspberrypi/cam_helper_imx296.cpp b/src/ipa/raspberrypi/cam_helper_imx296.cpp index 09f828ea..66d21e36 100644 --- a/src/ipa/raspberrypi/cam_helper_imx296.cpp +++ b/src/ipa/raspberrypi/cam_helper_imx296.cpp @@ -26,6 +26,7 @@ public: void getDelays(int &exposureDelay, int &gainDelay, int &vblankDelay) const override; private: + static constexpr uint32_t minExposureLines = 1; static constexpr uint32_t maxGainCode = 239; static constexpr Duration timePerLine = 550.0 / 37.125e6 * 1.0s; @@ -54,12 +55,12 @@ double CamHelperImx296::gain(uint32_t gainCode) const uint32_t CamHelperImx296::exposureLines(Duration exposure) const { - return (exposure - 14.26us) / timePerLine; + return std::max<uint32_t>(minExposureLines, (exposure - 14.26us) / timePerLine); } Duration CamHelperImx296::exposure(uint32_t exposureLines) const { - return exposureLines * timePerLine + 14.26us; + return std::max<uint32_t>(minExposureLines, exposureLines) * timePerLine + 14.26us; } void CamHelperImx296::getDelays(int &exposureDelay, int &gainDelay, |