cam: Rename BufferWriter to FileSink

Rename the BufferWriter class to FileSink to establish a common naming
scheme for all sinks.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>

src/cam/camera_session.cpp

@@ -13,9 +13,9 @@
 #include <libcamera/control_ids.h>
 #include <libcamera/property_ids.h>
 
-#include "buffer_writer.h"
 #include "camera_session.h"
 #include "event_loop.h"
+#include "file_sink.h"
 #include "main.h"
 #include "stream_options.h"
 
@@ -163,9 +163,9 @@ int CameraSession::start()
 
 	if (options_.isSet(OptFile)) {
 		if (!options_[OptFile].toString().empty())
-			sink_ = std::make_unique<BufferWriter>(options_[OptFile]);
+			sink_ = std::make_unique<FileSink>(options_[OptFile]);
 		else
-			sink_ = std::make_unique<BufferWriter>();
+			sink_ = std::make_unique<FileSink>();
 	}
 
 	if (sink_) {

src/cam/file_sink.cpp

@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2019, Google Inc.
  *
- * buffer_writer.cpp - Buffer writer
+ * file_sink.cpp - File Sink
  */
 
 #include <fcntl.h>
@@ -15,16 +15,16 @@
 
 #include <libcamera/camera.h>
 
-#include "buffer_writer.h"
+#include "file_sink.h"
 
 using namespace libcamera;
 
-BufferWriter::BufferWriter(const std::string &pattern)
+FileSink::FileSink(const std::string &pattern)
 	: pattern_(pattern)
 {
 }
 
-BufferWriter::~BufferWriter()
+FileSink::~FileSink()
 {
 	for (auto &iter : mappedBuffers_) {
 		void *memory = iter.second.first;
@@ -34,7 +34,7 @@ BufferWriter::~BufferWriter()
 	mappedBuffers_.clear();
 }
 
-int BufferWriter::configure(const libcamera::CameraConfiguration &config)
+int FileSink::configure(const libcamera::CameraConfiguration &config)
 {
 	int ret = FrameSink::configure(config);
 	if (ret < 0)
@@ -49,7 +49,7 @@ int BufferWriter::configure(const libcamera::CameraConfiguration &config)
 	return 0;
 }
 
-void BufferWriter::mapBuffer(FrameBuffer *buffer)
+void FileSink::mapBuffer(FrameBuffer *buffer)
 {
 	for (const FrameBuffer::Plane &plane : buffer->planes()) {
 		void *memory = mmap(NULL, plane.length, PROT_READ, MAP_SHARED,
@@ -60,7 +60,7 @@ void BufferWriter::mapBuffer(FrameBuffer *buffer)
 	}
 }
 
-bool BufferWriter::processRequest(Request *request)
+bool FileSink::processRequest(Request *request)
 {
 	for (auto [stream, buffer] : request->buffers())
 		writeBuffer(stream, buffer);
@@ -68,7 +68,7 @@ bool BufferWriter::processRequest(Request *request)
 	return true;
 }
 
-void BufferWriter::writeBuffer(const Stream *stream, FrameBuffer *buffer)
+void FileSink::writeBuffer(const Stream *stream, FrameBuffer *buffer)
 {
 	std::string filename;
 	size_t pos;

src/cam/file_sink.h

@@ -2,10 +2,10 @@
 /*
  * Copyright (C) 2019, Google Inc.
  *
- * buffer_writer.h - Buffer writer
+ * file_sink.h - File Sink
  */
-#ifndef __CAM_BUFFER_WRITER_H__
-#define __CAM_BUFFER_WRITER_H__
+#ifndef __CAM_FILE_SINK_H__
+#define __CAM_FILE_SINK_H__
 
 #include <map>
 #include <string>
@@ -14,11 +14,11 @@
 
 #include "frame_sink.h"
 
-class BufferWriter : public FrameSink
+class FileSink : public FrameSink
 {
 public:
-	BufferWriter(const std::string &pattern = "");
-	~BufferWriter();
+	FileSink(const std::string &pattern = "");
+	~FileSink();
 
 	int configure(const libcamera::CameraConfiguration &config) override;
 
@@ -35,4 +35,4 @@ private:
 	std::map<int, std::pair<void *, unsigned int>> mappedBuffers_;
 };
 
-#endif /* __CAM_BUFFER_WRITER_H__ */
+#endif /* __CAM_FILE_SINK_H__ */

src/cam/meson.build

@@ -10,9 +10,9 @@ endif
 cam_enabled = true
 
 cam_sources = files([
-    'buffer_writer.cpp',
     'camera_session.cpp',
     'event_loop.cpp',
+    'file_sink.cpp',
     'frame_sink.cpp',
     'main.cpp',
     'options.cpp',