diff --git a/include/libcamera/camera.h b/include/libcamera/camera.h
index 272c12c..a2ee4e7 100644
--- a/include/libcamera/camera.h
+++ b/include/libcamera/camera.h
@@ -17,6 +17,7 @@
 #include <libcamera/request.h>
 #include <libcamera/signal.h>
 #include <libcamera/stream.h>
+#include <libcamera/transform.h>
 
 namespace libcamera {
 
@@ -61,6 +62,8 @@ public:
 	bool empty() const;
 	std::size_t size() const;
 
+	Transform transform;
+
 protected:
 	CameraConfiguration();
 
diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
index 4a9c19c..b547ffe 100644
--- a/src/libcamera/camera.cpp
+++ b/src/libcamera/camera.cpp
@@ -93,7 +93,7 @@ LOG_DECLARE_CATEGORY(Camera)
  * \brief Create an empty camera configuration
  */
 CameraConfiguration::CameraConfiguration()
-	: config_({})
+	: transform(Transform::Identity), config_({})
 {
 }
 
@@ -250,6 +250,20 @@ std::size_t CameraConfiguration::size() const
 	return config_.size();
 }
 
+/**
+ * \var CameraConfiguration::transform
+ * \brief User-specified transform to be applied to the image
+ *
+ * The transform is a user-specified 2D plane transform that will be applied
+ * to the camera images by the processing pipeline before being handed to
+ * the application. This is subsequent to any transform that is already
+ * required to fix up any platform-defined rotation.
+ *
+ * The usual 2D plane transforms are allowed here (horizontal/vertical
+ * flips, multiple of 90-degree rotations etc.), but the validate() function
+ * may adjust this field at its discretion if the selection is not supported.
+ */
+
 /**
  * \var CameraConfiguration::config_
  * \brief The vector of stream configurations
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 2d881fe..22b8825 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -138,6 +138,11 @@ CameraConfiguration::Status IPU3CameraConfiguration::validate()
 	if (config_.empty())
 		return Invalid;
 
+	if (transform != Transform::Identity) {
+		transform = Transform::Identity;
+		status = Adjusted;
+	}
+
 	/* Cap the number of entries to the available streams. */
 	if (config_.size() > IPU3_MAX_STREAMS) {
 		config_.resize(IPU3_MAX_STREAMS);
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index f78b73e..1087257 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -400,6 +400,11 @@ CameraConfiguration::Status RPiCameraConfiguration::validate()
 	if (config_.empty())
 		return Invalid;
 
+	if (transform != Transform::Identity) {
+		transform = Transform::Identity;
+		status = Adjusted;
+	}
+
 	unsigned int rawCount = 0, outCount = 0, count = 0, maxIndex = 0;
 	std::pair<int, Size> outSize[2];
 	Size maxSize;
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 4d89aab..6f53a1d 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -478,6 +478,11 @@ CameraConfiguration::Status RkISP1CameraConfiguration::validate()
 	if (config_.empty())
 		return Invalid;
 
+	if (transform != Transform::Identity) {
+		transform = Transform::Identity;
+		status = Adjusted;
+	}
+
 	/* Cap the number of entries to the available streams. */
 	if (config_.size() > 1) {
 		config_.resize(1);
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index eb72e3b..10223a9 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -438,6 +438,11 @@ CameraConfiguration::Status SimpleCameraConfiguration::validate()
 	if (config_.empty())
 		return Invalid;
 
+	if (transform != Transform::Identity) {
+		transform = Transform::Identity;
+		status = Adjusted;
+	}
+
 	/* Cap the number of entries to the available streams. */
 	if (config_.size() > 1) {
 		config_.resize(1);
diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
index bafe6f1..ba0efc8 100644
--- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
@@ -109,6 +109,11 @@ CameraConfiguration::Status UVCCameraConfiguration::validate()
 	if (config_.empty())
 		return Invalid;
 
+	if (transform != Transform::Identity) {
+		transform = Transform::Identity;
+		status = Adjusted;
+	}
+
 	/* Cap the number of entries to the available streams. */
 	if (config_.size() > 1) {
 		config_.resize(1);
diff --git a/src/libcamera/pipeline/vimc/vimc.cpp b/src/libcamera/pipeline/vimc/vimc.cpp
index d192670..fc8085f 100644
--- a/src/libcamera/pipeline/vimc/vimc.cpp
+++ b/src/libcamera/pipeline/vimc/vimc.cpp
@@ -130,6 +130,11 @@ CameraConfiguration::Status VimcCameraConfiguration::validate()
 	if (config_.empty())
 		return Invalid;
 
+	if (transform != Transform::Identity) {
+		transform = Transform::Identity;
+		status = Adjusted;
+	}
+
 	/* Cap the number of entries to the available streams. */
 	if (config_.size() > 1) {
 		config_.resize(1);