diff options
| author | Naushir Patuck <naush@raspberrypi.com> | 2022-10-06 14:17:41 +0100 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2022-10-18 03:10:00 +0300 |
| commit | 51ac3e26717a0b06437f74c9ef1f3de76f79bb8e (patch) | |
| tree | ea7c59f396cb3c837043f9a4d9fbe114a7eafbc1 /src/ipa/raspberrypi | |
| parent | 5661c934ec6bc3b04e811dc828e946e30584610f (diff) | |
ipa: raspberrypi: Add line length calculations helper functions
Add CamHelper::hblankToLineLength() to calculate the line length
duration from the horizontal blanking (in pixels) value.
Add CamHelper::lineLengthToHblank() to calculate the horizontal blanking
(in pixels) value from the line length duration.
Add CamHelper::lineLengthPckToDuration() to calculate the line length
duration from the line length in pixels.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src/ipa/raspberrypi')
| -rw-r--r-- | src/ipa/raspberrypi/cam_helper.cpp | 16 | ||||
| -rw-r--r-- | src/ipa/raspberrypi/cam_helper.h | 3 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/ipa/raspberrypi/cam_helper.cpp b/src/ipa/raspberrypi/cam_helper.cpp index dd7236f1..bc3f66a5 100644 --- a/src/ipa/raspberrypi/cam_helper.cpp +++ b/src/ipa/raspberrypi/cam_helper.cpp @@ -18,6 +18,7 @@ using namespace RPiController; using namespace libcamera; using libcamera::utils::Duration; +using namespace std::literals::chrono_literals; namespace libcamera { LOG_DECLARE_CATEGORY(IPARPI) @@ -96,6 +97,21 @@ uint32_t CamHelper::getVBlanking(Duration &exposure, return vblank; } +Duration CamHelper::hblankToLineLength(uint32_t hblank) const +{ + return (mode_.width + hblank) * (1.0s / mode_.pixelRate); +} + +uint32_t CamHelper::lineLengthToHblank(const Duration &lineLength) const +{ + return (lineLength * mode_.pixelRate / 1.0s) - mode_.width; +} + +Duration CamHelper::lineLengthPckToDuration(uint32_t lineLengthPck) const +{ + return lineLengthPck * (1.0s / mode_.pixelRate); +} + void CamHelper::setCameraMode(const CameraMode &mode) { mode_ = mode; diff --git a/src/ipa/raspberrypi/cam_helper.h b/src/ipa/raspberrypi/cam_helper.h index db2387af..6cd1dd39 100644 --- a/src/ipa/raspberrypi/cam_helper.h +++ b/src/ipa/raspberrypi/cam_helper.h @@ -85,6 +85,9 @@ public: virtual uint32_t getVBlanking(libcamera::utils::Duration &exposure, libcamera::utils::Duration minFrameDuration, libcamera::utils::Duration maxFrameDuration) const; + libcamera::utils::Duration hblankToLineLength(uint32_t hblank) const; + uint32_t lineLengthToHblank(const libcamera::utils::Duration &duration) const; + libcamera::utils::Duration lineLengthPckToDuration(uint32_t lineLengthPck) const; virtual uint32_t gainCode(double gain) const = 0; virtual double gain(uint32_t gainCode) const = 0; virtual void getDelays(int &exposureDelay, int &gainDelay, |