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libcamera: ipu3: Register FrameDurations control

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Register the FrameDurations control in the IPU3 pipeline handler
computed using the vertical blanking limits and the sensor
pixel rate as parameters.

The FrameDurations control limits should be updated everytime a new
configuration is applied to the sensor.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Jacopo Mondi
2021-01-20 12:28:10 +01:00
parent cbd4617a09
commit 02a1186536
1 changed files with 28 additions and 1 deletions
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src/libcamera/pipeline/ipu3/ipu3.cpp
+28 -1
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@@ -889,6 +889,7 @@ int PipelineHandlerIPU3::initControls(IPU3CameraData *data)
return ret;
ControlInfoMap::Map controls = IPU3Controls;
const ControlInfoMap &sensorControls = sensor->controls();
/*
* Compute exposure time limits.
@@ -900,7 +901,6 @@ int PipelineHandlerIPU3::initControls(IPU3CameraData *data)
*/
double lineDuration = sensorInfo.lineLength
/ (sensorInfo.pixelRate / 1e6);
const ControlInfoMap &sensorControls = sensor->controls();
const ControlInfo &v4l2Exposure = sensorControls.find(V4L2_CID_EXPOSURE)->second;
int32_t minExposure = v4l2Exposure.min().get<int32_t>() * lineDuration;
int32_t maxExposure = v4l2Exposure.max().get<int32_t>() * lineDuration;
@@ -915,6 +915,33 @@ int PipelineHandlerIPU3::initControls(IPU3CameraData *data)
controls[&controls::ExposureTime] = ControlInfo(minExposure, maxExposure,
defExposure);
/*
* Compute the frame duration limits.
*
* The frame length is computed assuming a fixed line length combined
* with the vertical frame sizes.
*/
const ControlInfo &v4l2HBlank = sensorControls.find(V4L2_CID_HBLANK)->second;
uint32_t hblank = v4l2HBlank.def().get<int32_t>();
uint32_t lineLength = sensorInfo.outputSize.width + hblank;
const ControlInfo &v4l2VBlank = sensorControls.find(V4L2_CID_VBLANK)->second;
std::array<uint32_t, 3> frameHeights{
v4l2VBlank.min().get<int32_t>() + sensorInfo.outputSize.height,
v4l2VBlank.max().get<int32_t>() + sensorInfo.outputSize.height,
v4l2VBlank.def().get<int32_t>() + sensorInfo.outputSize.height,
};
std::array<int64_t, 3> frameDurations;
for (unsigned int i = 0; i < frameHeights.size(); ++i) {
uint64_t frameSize = lineLength * frameHeights[i];
frameDurations[i] = frameSize / (sensorInfo.pixelRate / 1000000U);
}
controls[&controls::FrameDurations] = ControlInfo(frameDurations[0],
frameDurations[1],
frameDurations[2]);
/*
* Compute the scaler crop limits.
*