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-rw-r--r--src/libcamera/camera_sensor.cpp72
-rw-r--r--src/libcamera/pipeline/ipu3/ipu3.cpp45
-rw-r--r--src/libcamera/pipeline/raspberrypi/raspberrypi.cpp59
3 files changed, 85 insertions, 91 deletions
diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp
index 83ac075a..a8668547 100644
--- a/src/libcamera/camera_sensor.cpp
+++ b/src/libcamera/camera_sensor.cpp
@@ -16,6 +16,7 @@
#include <string.h>
#include <libcamera/property_ids.h>
+#include <libcamera/transform.h>
#include <libcamera/base/utils.h>
@@ -962,6 +963,77 @@ void CameraSensor::updateControlInfo()
* connected to the sensor
*/
+/**
+ * \brief Validate a transform request against the sensor capabilities
+ * \param[inout] transform The requested transformation, updated to match
+ * the sensor capabilities
+ *
+ * The input \a transform is the transform that the caller wants, and it is
+ * adjusted according to the capabilities of the sensor to represent the
+ * "nearest" transform that can actually be delivered.
+ *
+ * The returned Transform is the transform applied to the sensor in order to
+ * produce the input \a transform, It is also validated against the sensor's
+ * ability to perform horizontal and vertical flips.
+ *
+ * For example, if the requested \a transform is Transform::Identity and the
+ * sensor rotation is 180 degrees, the output transform will be
+ * Transform::Rot180 to correct the images so that they appear to have
+ * Transform::Identity, but only if the sensor can apply horizontal and vertical
+ * flips.
+ *
+ * \return A Transform instance that represents which transformation has been
+ * applied to the camera sensor
+ */
+Transform CameraSensor::validateTransform(Transform *transform) const
+{
+ /* Adjust the requested transform to compensate the sensor rotation. */
+ int32_t rotation = properties().get(properties::Rotation).value_or(0);
+ bool success;
+
+ Transform rotationTransform = transformFromRotation(rotation, &success);
+ if (!success)
+ LOG(CameraSensor, Warning) << "Invalid rotation of " << rotation
+ << " degrees - ignoring";
+
+ Transform combined = *transform * rotationTransform;
+
+ /*
+ * We combine the platform and user transform, but must "adjust away"
+ * any combined result that includes a transform, as we can't do those.
+ * In this case, flipping only the transpose bit is helpful to
+ * applications - they either get the transform they requested, or have
+ * to do a simple transpose themselves (they don't have to worry about
+ * the other possible cases).
+ */
+ if (!!(combined & Transform::Transpose)) {
+ /*
+ * Flipping the transpose bit in "transform" flips it in the
+ * combined result too (as it's the last thing that happens),
+ * which is of course clearing it.
+ */
+ *transform ^= Transform::Transpose;
+ combined &= ~Transform::Transpose;
+ }
+
+ /*
+ * We also check if the sensor doesn't do h/vflips at all, in which
+ * case we clear them, and the application will have to do everything.
+ */
+ if (!supportFlips_ && !!combined) {
+ /*
+ * If the sensor can do no transforms, then combined must be
+ * changed to the identity. The only user transform that gives
+ * rise to this is the inverse of the rotation. (Recall that
+ * combined = transform * rotationTransform.)
+ */
+ *transform = -rotationTransform;
+ combined = Transform::Identity;
+ }
+
+ return combined;
+}
+
std::string CameraSensor::logPrefix() const
{
return "'" + entity_->name() + "'";
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index e4d79ea4..a424ac91 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -184,48 +184,15 @@ CameraConfiguration::Status IPU3CameraConfiguration::validate()
if (config_.empty())
return Invalid;
- Transform combined = transform * data_->rotationTransform_;
-
- /*
- * We combine the platform and user transform, but must "adjust away"
- * any combined result that includes a transposition, as we can't do
- * those. In this case, flipping only the transpose bit is helpful to
- * applications - they either get the transform they requested, or have
- * to do a simple transpose themselves (they don't have to worry about
- * the other possible cases).
- */
- if (!!(combined & Transform::Transpose)) {
- /*
- * Flipping the transpose bit in "transform" flips it in the
- * combined result too (as it's the last thing that happens),
- * which is of course clearing it.
- */
- transform ^= Transform::Transpose;
- combined &= ~Transform::Transpose;
- status = Adjusted;
- }
-
/*
- * We also check if the sensor doesn't do h/vflips at all, in which
- * case we clear them, and the application will have to do everything.
+ * Validate the requested transform against the sensor capabilities and
+ * rotation and store the final combined transform that configure() will
+ * need to apply to the sensor to save us working it out again.
*/
- if (!data_->supportsFlips_ && !!combined) {
- /*
- * If the sensor can do no transforms, then combined must be
- * changed to the identity. The only user transform that gives
- * rise to this is the inverse of the rotation. (Recall that
- * combined = transform * rotationTransform.)
- */
- transform = -data_->rotationTransform_;
- combined = Transform::Identity;
+ Transform requestedTransform = transform;
+ combinedTransform_ = data_->cio2_.sensor()->validateTransform(&transform);
+ if (transform != requestedTransform)
status = Adjusted;
- }
-
- /*
- * Store the final combined transform that configure() will need to
- * apply to the sensor to save us working it out again.
- */
- combinedTransform_ = combined;
/* Cap the number of entries to the available streams. */
if (config_.size() > kMaxStreams) {
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index 8569df17..c086a69a 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -367,59 +367,14 @@ CameraConfiguration::Status RPiCameraConfiguration::validate()
status = validateColorSpaces(ColorSpaceFlag::StreamsShareColorSpace);
/*
- * What if the platform has a non-90 degree rotation? We can't even
- * "adjust" the configuration and carry on. Alternatively, raising an
- * error means the platform can never run. Let's just print a warning
- * and continue regardless; the rotation is effectively set to zero.
+ * Validate the requested transform against the sensor capabilities and
+ * rotation and store the final combined transform that configure() will
+ * need to apply to the sensor to save us working it out again.
*/
- int32_t rotation = data_->sensor_->properties().get(properties::Rotation).value_or(0);
- bool success;
- Transform rotationTransform = transformFromRotation(rotation, &success);
- if (!success)
- LOG(RPI, Warning) << "Invalid rotation of " << rotation
- << " degrees - ignoring";
- Transform combined = transform * rotationTransform;
-
- /*
- * We combine the platform and user transform, but must "adjust away"
- * any combined result that includes a transform, as we can't do those.
- * In this case, flipping only the transpose bit is helpful to
- * applications - they either get the transform they requested, or have
- * to do a simple transpose themselves (they don't have to worry about
- * the other possible cases).
- */
- if (!!(combined & Transform::Transpose)) {
- /*
- * Flipping the transpose bit in "transform" flips it in the
- * combined result too (as it's the last thing that happens),
- * which is of course clearing it.
- */
- transform ^= Transform::Transpose;
- combined &= ~Transform::Transpose;
- status = Adjusted;
- }
-
- /*
- * We also check if the sensor doesn't do h/vflips at all, in which
- * case we clear them, and the application will have to do everything.
- */
- if (!data_->supportsFlips_ && !!combined) {
- /*
- * If the sensor can do no transforms, then combined must be
- * changed to the identity. The only user transform that gives
- * rise to this the inverse of the rotation. (Recall that
- * combined = transform * rotationTransform.)
- */
- transform = -rotationTransform;
- combined = Transform::Identity;
+ Transform requestedTransform = transform;
+ combinedTransform_ = data_->sensor_->validateTransform(&transform);
+ if (transform != requestedTransform)
status = Adjusted;
- }
-
- /*
- * Store the final combined transform that configure() will need to
- * apply to the sensor to save us working it out again.
- */
- combinedTransform_ = combined;
unsigned int rawCount = 0, outCount = 0, count = 0, maxIndex = 0;
std::pair<int, Size> outSize[2];
@@ -454,7 +409,7 @@ CameraConfiguration::Status RPiCameraConfiguration::validate()
if (data_->flipsAlterBayerOrder_) {
BayerFormat bayer = BayerFormat::fromV4L2PixelFormat(fourcc);
bayer.order = data_->nativeBayerOrder_;
- bayer = bayer.transform(combined);
+ bayer = bayer.transform(combinedTransform_);
fourcc = bayer.toV4L2PixelFormat();
}