android: Convert to pragma once

Remove the verbose #ifndef/#define/#endif pattern for maintaining
header idempotency, and replace it with a simple #pragma once.

This simplifies the headers, and prevents redundant changes when
header files get moved.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>

17 files changed, 34 insertions, 66 deletions

diff --git a/src/android/camera_buffer.h b/src/android/camera_buffer.h
index 226a8f5c..b4531c80 100644
--- a/src/android/camera_buffer.h
+++ b/src/android/camera_buffer.h
@@ -4,8 +4,8 @@
  *
  * camera_buffer.h - Frame buffer handling interface definition
  */
-#ifndef __ANDROID_CAMERA_BUFFER_H__
-#define __ANDROID_CAMERA_BUFFER_H__
+
+#pragma once
 
 #include <hardware/camera3.h>
 
@@ -82,4 +82,3 @@ size_t CameraBuffer::jpegBufferSize(size_t maxJpegBufferSize) const	\
 {									\
 	return _d()->jpegBufferSize(maxJpegBufferSize);			\
 }
-#endif /* __ANDROID_CAMERA_BUFFER_H__ */
diff --git a/src/android/camera_capabilities.h b/src/android/camera_capabilities.h
index 2cf97ae8..6f66f221 100644
--- a/src/android/camera_capabilities.h
+++ b/src/android/camera_capabilities.h
@@ -4,8 +4,8 @@
  *
  * camera_capabilities.h - Camera static properties manager
  */
-#ifndef __ANDROID_CAMERA_CAPABILITIES_H__
-#define __ANDROID_CAMERA_CAPABILITIES_H__
+
+#pragma once
 
 #include <map>
 #include <memory>
@@ -84,5 +84,3 @@ private:
 	std::set<int32_t> availableRequestKeys_;
 	std::set<int32_t> availableResultKeys_;
 };
-
-#endif /* __ANDROID_CAMERA_CAPABILITIES_H__ */
diff --git a/src/android/camera_device.h b/src/android/camera_device.h
index 2a414020..51fe7da2 100644
--- a/src/android/camera_device.h
+++ b/src/android/camera_device.h
@@ -4,8 +4,8 @@
  *
  * camera_device.h - libcamera Android Camera Device
  */
-#ifndef __ANDROID_CAMERA_DEVICE_H__
-#define __ANDROID_CAMERA_DEVICE_H__
+
+#pragma once
 
 #include <map>
 #include <memory>
@@ -130,5 +130,3 @@ private:
 
 	CameraMetadata lastSettings_;
 };
-
-#endif /* __ANDROID_CAMERA_DEVICE_H__ */
diff --git a/src/android/camera_hal_config.h b/src/android/camera_hal_config.h
index a79d5d6c..9df554f9 100644
--- a/src/android/camera_hal_config.h
+++ b/src/android/camera_hal_config.h
@@ -4,8 +4,8 @@
  *
  * camera_hal_config.h - Camera HAL configuration file manager
  */
-#ifndef __ANDROID_CAMERA_HAL_CONFIG_H__
-#define __ANDROID_CAMERA_HAL_CONFIG_H__
+
+#pragma once
 
 #include <map>
 #include <string>
@@ -36,4 +36,3 @@ private:
 
 	int parseConfigurationFile();
 };
-#endif /* __ANDROID_CAMERA_HAL_CONFIG_H__ */
diff --git a/src/android/camera_hal_manager.h b/src/android/camera_hal_manager.h
index 3f6d302a..192f2fc5 100644
--- a/src/android/camera_hal_manager.h
+++ b/src/android/camera_hal_manager.h
@@ -4,8 +4,8 @@
  *
  * camera_hal_manager.h - libcamera Android Camera Manager
  */
-#ifndef __ANDROID_CAMERA_MANAGER_H__
-#define __ANDROID_CAMERA_MANAGER_H__
+
+#pragma once
 
 #include <map>
 #include <mutex>
@@ -69,5 +69,3 @@ private:
 	unsigned int numInternalCameras_;
 	unsigned int nextExternalCameraId_;
 };
-
-#endif /* __ANDROID_CAMERA_MANAGER_H__ */
diff --git a/src/android/camera_metadata.h b/src/android/camera_metadata.h
index 8555c7c3..e70f60af 100644
--- a/src/android/camera_metadata.h
+++ b/src/android/camera_metadata.h
@@ -4,8 +4,8 @@
  *
  * camera_metadata.h - libcamera Android Camera Metadata Helper
  */
-#ifndef __ANDROID_CAMERA_METADATA_H__
-#define __ANDROID_CAMERA_METADATA_H__
+
+#pragma once
 
 #include <stdint.h>
 #include <vector>
@@ -99,5 +99,3 @@ private:
 	bool valid_;
 	bool resized_;
 };
-
-#endif /* __ANDROID_CAMERA_METADATA_H__ */
diff --git a/src/android/camera_ops.h b/src/android/camera_ops.h
index 304e7b85..b501bb7e 100644
--- a/src/android/camera_ops.h
+++ b/src/android/camera_ops.h
@@ -4,12 +4,10 @@
  *
  * camera_ops.h - Android Camera HAL Operations
  */
-#ifndef __ANDROID_CAMERA_OPS_H__
-#define __ANDROID_CAMERA_OPS_H__
+
+#pragma once
 
 #include <hardware/camera3.h>
 
 int hal_dev_close(hw_device_t *hw_device);
 extern camera3_device_ops hal_dev_ops;
-
-#endif /* __ANDROID_CAMERA_OPS_H__ */
diff --git a/src/android/camera_request.h b/src/android/camera_request.h
index 8d1204e5..f3cb6d64 100644
--- a/src/android/camera_request.h
+++ b/src/android/camera_request.h
@@ -4,8 +4,8 @@
  *
  * camera_request.h - libcamera Android Camera Request Descriptor
  */
-#ifndef __ANDROID_CAMERA_REQUEST_H__
-#define __ANDROID_CAMERA_REQUEST_H__
+
+#pragma once
 
 #include <map>
 #include <memory>
@@ -80,5 +80,3 @@ public:
 private:
 	LIBCAMERA_DISABLE_COPY(Camera3RequestDescriptor)
 };
-
-#endif /* __ANDROID_CAMERA_REQUEST_H__ */
diff --git a/src/android/camera_stream.h b/src/android/camera_stream.h
index 0c402deb..e9da75f0 100644
--- a/src/android/camera_stream.h
+++ b/src/android/camera_stream.h
@@ -4,8 +4,8 @@
  *
  * camera_stream.h - Camera HAL stream
  */
-#ifndef __ANDROID_CAMERA_STREAM_H__
-#define __ANDROID_CAMERA_STREAM_H__
+
+#pragma once
 
 #include <condition_variable>
 #include <memory>
@@ -179,5 +179,3 @@ private:
 
 	std::unique_ptr<PostProcessorWorker> worker_;
 };
-
-#endif /* __ANDROID_CAMERA_STREAM__ */
diff --git a/src/android/camera_worker.h b/src/android/camera_worker.h
index c94f1632..26ecc273 100644
--- a/src/android/camera_worker.h
+++ b/src/android/camera_worker.h
@@ -4,8 +4,8 @@
  *
  * camera_worker.h - Process capture requests on behalf of the Camera HAL
  */
-#ifndef __ANDROID_CAMERA_WORKER_H__
-#define __ANDROID_CAMERA_WORKER_H__
+
+#pragma once
 
 #include <memory>
 #include <stdint.h>
@@ -68,5 +68,3 @@ private:
 
 	Worker worker_;
 };
-
-#endif /* __ANDROID_CAMERA_WORKER_H__ */
diff --git a/src/android/jpeg/encoder.h b/src/android/jpeg/encoder.h
index a28522f4..b974d367 100644
--- a/src/android/jpeg/encoder.h
+++ b/src/android/jpeg/encoder.h
@@ -4,8 +4,8 @@
  *
  * encoder.h - Image encoding interface
  */
-#ifndef __ANDROID_JPEG_ENCODER_H__
-#define __ANDROID_JPEG_ENCODER_H__
+
+#pragma once
 
 #include <libcamera/base/span.h>
 
@@ -23,5 +23,3 @@ public:
 			   libcamera::Span<const uint8_t> exifData,
 			   unsigned int quality) = 0;
 };
-
-#endif /* __ANDROID_JPEG_ENCODER_H__ */
diff --git a/src/android/jpeg/encoder_libjpeg.h b/src/android/jpeg/encoder_libjpeg.h
index 45ffbd7f..1b3ac067 100644
--- a/src/android/jpeg/encoder_libjpeg.h
+++ b/src/android/jpeg/encoder_libjpeg.h
@@ -4,8 +4,8 @@
  *
  * encoder_libjpeg.h - JPEG encoding using libjpeg
  */
-#ifndef __ANDROID_JPEG_ENCODER_LIBJPEG_H__
-#define __ANDROID_JPEG_ENCODER_LIBJPEG_H__
+
+#pragma once
 
 #include "encoder.h"
 
@@ -43,5 +43,3 @@ private:
 	bool nv_;
 	bool nvSwap_;
 };
-
-#endif /* __ANDROID_JPEG_ENCODER_LIBJPEG_H__ */
diff --git a/src/android/jpeg/exif.h b/src/android/jpeg/exif.h
index 23b0e097..2ff8fb78 100644
--- a/src/android/jpeg/exif.h
+++ b/src/android/jpeg/exif.h
@@ -4,8 +4,8 @@
  *
  * exif.h - EXIF tag creator using libexif
  */
-#ifndef __ANDROID_JPEG_EXIF_H__
-#define __ANDROID_JPEG_EXIF_H__
+
+#pragma once
 
 #include <chrono>
 #include <string>
@@ -107,5 +107,3 @@ private:
 	unsigned char *exifData_;
 	unsigned int size_;
 };
-
-#endif /* __ANDROID_JPEG_EXIF_H__ */
diff --git a/src/android/jpeg/post_processor_jpeg.h b/src/android/jpeg/post_processor_jpeg.h
index 43fcbe60..98309b01 100644
--- a/src/android/jpeg/post_processor_jpeg.h
+++ b/src/android/jpeg/post_processor_jpeg.h
@@ -4,8 +4,8 @@
  *
  * post_processor_jpeg.h - JPEG Post Processor
  */
-#ifndef __ANDROID_POST_PROCESSOR_JPEG_H__
-#define __ANDROID_POST_PROCESSOR_JPEG_H__
+
+#pragma once
 
 #include "../post_processor.h"
 #include "encoder_libjpeg.h"
@@ -36,5 +36,3 @@ private:
 	EncoderLibJpeg thumbnailEncoder_;
 	Thumbnailer thumbnailer_;
 };
-
-#endif /* __ANDROID_POST_PROCESSOR_JPEG_H__ */
diff --git a/src/android/jpeg/thumbnailer.h b/src/android/jpeg/thumbnailer.h
index 4d086c49..d933cf0e 100644
--- a/src/android/jpeg/thumbnailer.h
+++ b/src/android/jpeg/thumbnailer.h
@@ -4,8 +4,8 @@
  *
  * thumbnailer.h - Simple image thumbnailer
  */
-#ifndef __ANDROID_JPEG_THUMBNAILER_H__
-#define __ANDROID_JPEG_THUMBNAILER_H__
+
+#pragma once
 
 #include <libcamera/framebuffer.h>
 #include <libcamera/geometry.h>
@@ -30,5 +30,3 @@ private:
 
 	bool valid_;
 };
-
-#endif /* __ANDROID_JPEG_THUMBNAILER_H__ */
diff --git a/src/android/post_processor.h b/src/android/post_processor.h
index 5ec71c93..1a205b05 100644
--- a/src/android/post_processor.h
+++ b/src/android/post_processor.h
@@ -4,8 +4,8 @@
  *
  * post_processor.h - CameraStream Post Processing Interface
  */
-#ifndef __ANDROID_POST_PROCESSOR_H__
-#define __ANDROID_POST_PROCESSOR_H__
+
+#pragma once
 
 #include <libcamera/base/signal.h>
 
@@ -31,5 +31,3 @@ public:
 
 	libcamera::Signal<Camera3RequestDescriptor::StreamBuffer *, Status> processComplete;
 };
-
-#endif /* __ANDROID_POST_PROCESSOR_H__ */
diff --git a/src/android/yuv/post_processor_yuv.h b/src/android/yuv/post_processor_yuv.h
index 39ec7994..a7ac17c5 100644
--- a/src/android/yuv/post_processor_yuv.h
+++ b/src/android/yuv/post_processor_yuv.h
@@ -4,8 +4,8 @@
  *
  * post_processor_yuv.h - Post Processor using libyuv
  */
-#ifndef __ANDROID_POST_PROCESSOR_YUV_H__
-#define __ANDROID_POST_PROCESSOR_YUV_H__
+
+#pragma once
 
 #include "../post_processor.h"
 
@@ -33,5 +33,3 @@ private:
 	unsigned int sourceStride_[2] = {};
 	unsigned int destinationStride_[2] = {};
 };
-
-#endif /* __ANDROID_POST_PROCESSOR_YUV_H__ */