libcamera: Replace toString with operator<<() for format classes

Now that format classes implement the stream formatting operator<<(),
use it instead of the toString() function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_capabilities.cpp

@@ -554,7 +554,7 @@ int CameraCapabilities::initializeStreamConfigurations()
 			formatsMap_[androidFormat] = formats::MJPEG;
 			LOG(HAL, Debug) << "Mapped Android format "
 					<< camera3Format.name << " to "
-					<< formats::MJPEG.toString()
+					<< formats::MJPEG
 					<< " (fixed mapping)";
 			continue;
 		}
@@ -566,7 +566,7 @@ int CameraCapabilities::initializeStreamConfigurations()
 		PixelFormat mappedFormat;
 		for (const PixelFormat &pixelFormat : libcameraFormats) {
 
-			LOG(HAL, Debug) << "Testing " << pixelFormat.toString();
+			LOG(HAL, Debug) << "Testing " << pixelFormat;
 
 			/*
 			 * The stream configuration size can be adjusted,
@@ -605,7 +605,7 @@ int CameraCapabilities::initializeStreamConfigurations()
 		formatsMap_[androidFormat] = mappedFormat;
 		LOG(HAL, Debug) << "Mapped Android format "
 				<< camera3Format.name << " to "
-				<< mappedFormat.toString();
+				<< mappedFormat;
 
 		std::vector<Size> resolutions;
 		const PixelFormatInfo &info = PixelFormatInfo::info(mappedFormat);

src/android/camera_device.cpp

@@ -575,7 +575,7 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
 			       << ", crop_rotate_scale_degrees: "
 			       << rotationToString(stream->crop_rotate_scale_degrees)
 #endif
-			       << " (" << format.toString() << ")";
+			       << " (" << format << ")";
 
 		if (!format.isValid())
 			return -EINVAL;
@@ -926,7 +926,7 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 		   << camera3Stream->height << ")"
 		   << "[" << utils::hex(camera3Stream->format) << "] -> "
 		   << "(" << cameraStream->configuration().size << ")["
-		   << cameraStream->configuration().pixelFormat.toString() << "]";
+		   << cameraStream->configuration().pixelFormat << "]";
 
 		/*
 		 * Inspect the camera stream type, create buffers opportunely

src/android/jpeg/encoder_libjpeg.cpp

@@ -59,7 +59,7 @@ const struct JPEGPixelFormatInfo &findPixelInfo(const PixelFormat &format)
 	const auto iter = pixelInfo.find(format);
 	if (iter == pixelInfo.end()) {
 		LOG(JPEG, Error) << "Unsupported pixel format for JPEG encoder: "
-				 << format.toString();
+				 << format;
 		return invalidPixelFormat;
 	}
 

src/android/jpeg/thumbnailer.cpp

@@ -30,7 +30,7 @@ void Thumbnailer::configure(const Size &sourceSize, PixelFormat pixelFormat)
 	if (pixelFormat_ != formats::NV12) {
 		LOG(Thumbnailer, Error)
 			<< "Failed to configure: Pixel Format "
-			<< pixelFormat_.toString() << " unsupported.";
+			<< pixelFormat_ << " unsupported.";
 		return;
 	}
 

src/android/mm/generic_camera_buffer.cpp

@@ -66,8 +66,7 @@ CameraBuffer::Private::Private([[maybe_unused]] CameraBuffer *cameraBuffer,
 	const auto &info = PixelFormatInfo::info(pixelFormat);
 	if (!info.isValid()) {
 		error_ = -EINVAL;
-		LOG(HAL, Error) << "Invalid pixel format: "
-				<< pixelFormat.toString();
+		LOG(HAL, Error) << "Invalid pixel format: " << pixelFormat;
 		return;
 	}
 

src/android/yuv/post_processor_yuv.cpp

@@ -27,8 +27,8 @@ int PostProcessorYuv::configure(const StreamConfiguration &inCfg,
 {
 	if (inCfg.pixelFormat != outCfg.pixelFormat) {
 		LOG(YUV, Error) << "Pixel format conversion is not supported"
-				<< " (from " << inCfg.pixelFormat.toString()
-				<< " to " << outCfg.pixelFormat.toString() << ")";
+				<< " (from " << inCfg.pixelFormat
+				<< " to " << outCfg.pixelFormat << ")";
 		return -EINVAL;
 	}