libcamera: stream: Rename StillCaptureRaw to Raw

With the buffer copy removed from all pipelines for raw capture
rename StillCaptureRaw to Raw to better describe the role.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

src/libcamera/pipeline/ipu3/ipu3.cpp

@@ -348,7 +348,7 @@ CameraConfiguration *PipelineHandlerIPU3::generateConfiguration(Camera *camera,
 
 			break;
 
-		case StreamRole::StillCaptureRaw: {
+		case StreamRole::Raw: {
 			StreamConfiguration cio2Config =
 				data->cio2_.generateConfiguration(sensorResolution);
 			pixelFormat = cio2Config.pixelFormat;

src/libcamera/pipeline/raspberrypi/raspberrypi.cpp

@@ -461,7 +461,7 @@ CameraConfiguration *PipelineHandlerRPi::generateConfiguration(Camera *camera,
 	unsigned int outCount = 0;
 	for (const StreamRole role : roles) {
 		switch (role) {
-		case StreamRole::StillCaptureRaw:
+		case StreamRole::Raw:
 			size = data->sensor_->resolution();
 			fmts = data->unicam_[Unicam::Image].dev()->formats();
 			sensorFormat = findBestMode(fmts, size);

src/libcamera/stream.cpp

@@ -380,12 +380,11 @@ std::string StreamConfiguration::toString() const
  * are specified by applications and passed to cameras, that then select the
  * most appropriate streams and their default configurations.
  *
+ * \var Raw
+ * The stream is intended to capture raw frames from the sensor.
  * \var StillCapture
  * The stream is intended to capture high-resolution, high-quality still images
  * with low frame rate. The captured frames may be exposed with flash.
- * \var StillCaptureRaw
- * The stream is intended to capture high-resolution, raw still images with low
- * frame rate.
  * \var VideoRecording
  * The stream is intended to capture video for the purpose of recording or
  * streaming. The video stream may produce a high frame rate and may be