diff options
Diffstat (limited to 'src/libcamera/camera_sensor.cpp')
| -rw-r--r-- | src/libcamera/camera_sensor.cpp | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp index 911fd0be..572a313a 100644 --- a/src/libcamera/camera_sensor.cpp +++ b/src/libcamera/camera_sensor.cpp @@ -176,6 +176,32 @@ int CameraSensor::init() if (ret) return ret; + /* + * Set HBLANK to the minimum to start with a well-defined line length, + * allowing IPA modules that do not modify HBLANK to use the sensor + * minimum line length in their calculations. + * + * At present, there is no way of knowing if a control is read-only. + * As a workaround, assume that if the minimum and maximum values of + * the V4L2_CID_HBLANK control are the same, it implies the control + * is read-only. + * + * \todo The control API ought to have a flag to specify if a control + * is read-only which could be used below. + */ + const ControlInfo hblank = ctrls.infoMap()->at(V4L2_CID_HBLANK); + const int32_t hblankMin = hblank.min().get<int32_t>(); + const int32_t hblankMax = hblank.max().get<int32_t>(); + + if (hblankMin != hblankMax) { + ControlList ctrl(subdev_->controls()); + + ctrl.set(V4L2_CID_HBLANK, hblankMin); + ret = subdev_->setControls(&ctrl); + if (ret) + return ret; + } + return applyTestPatternMode(controls::draft::TestPatternModeEnum::TestPatternModeOff); } @@ -883,10 +909,12 @@ int CameraSensor::sensorInfo(IPACameraSensorInfo *info) const return -EINVAL; } - int32_t hblank = ctrls.get(V4L2_CID_HBLANK).get<int32_t>(); - info->lineLength = info->outputSize.width + hblank; info->pixelRate = ctrls.get(V4L2_CID_PIXEL_RATE).get<int64_t>(); + const ControlInfo hblank = ctrls.infoMap()->at(V4L2_CID_HBLANK); + info->minLineLength = info->outputSize.width + hblank.min().get<int32_t>(); + info->maxLineLength = info->outputSize.width + hblank.max().get<int32_t>(); + const ControlInfo vblank = ctrls.infoMap()->at(V4L2_CID_VBLANK); info->minFrameLength = info->outputSize.height + vblank.min().get<int32_t>(); info->maxFrameLength = info->outputSize.height + vblank.max().get<int32_t>(); |