libcamera: pipeline: simple: Rename converterBuffers_ and related vars

The converterBuffers_ and the converterQueue_ are not that specific
to the Converter, and could be used by another entity doing the format
conversion.

Rename converterBuffers_, converterQueue_, and useConverter_ to
conversionBuffers_, conversionQueue_ and useConversion_ to
disassociate them from the Converter.

Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # sc8280xp Lenovo x13s
Tested-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 32 insertions, 31 deletions

diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index d2b88795..c950f88f 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -270,17 +270,18 @@ public:
 	std::vector<Configuration> configs_;
 	std::map<PixelFormat, std::vector<const Configuration *>> formats_;
 
+	std::vector<std::unique_ptr<FrameBuffer>> conversionBuffers_;
+	std::queue<std::map<unsigned int, FrameBuffer *>> conversionQueue_;
+	bool useConversion_;
+
 	std::unique_ptr<Converter> converter_;
-	std::vector<std::unique_ptr<FrameBuffer>> converterBuffers_;
-	bool useConverter_;
-	std::queue<std::map<unsigned int, FrameBuffer *>> converterQueue_;
 
 private:
 	void tryPipeline(unsigned int code, const Size &size);
 	static std::vector<const MediaPad *> routedSourcePads(MediaPad *sink);
 
-	void converterInputDone(FrameBuffer *buffer);
-	void converterOutputDone(FrameBuffer *buffer);
+	void conversionInputDone(FrameBuffer *buffer);
+	void conversionOutputDone(FrameBuffer *buffer);
 };
 
 class SimpleCameraConfiguration : public CameraConfiguration
@@ -504,8 +505,8 @@ int SimpleCameraData::init()
 				<< "Failed to create converter, disabling format conversion";
 			converter_.reset();
 		} else {
-			converter_->inputBufferReady.connect(this, &SimpleCameraData::converterInputDone);
-			converter_->outputBufferReady.connect(this, &SimpleCameraData::converterOutputDone);
+			converter_->inputBufferReady.connect(this, &SimpleCameraData::conversionInputDone);
+			converter_->outputBufferReady.connect(this, &SimpleCameraData::conversionOutputDone);
 		}
 	}
 
@@ -741,7 +742,7 @@ void SimpleCameraData::bufferReady(FrameBuffer *buffer)
 	 * point converting an erroneous buffer.
 	 */
 	if (buffer->metadata().status != FrameMetadata::FrameSuccess) {
-		if (!useConverter_) {
+		if (!useConversion_) {
 			/* No conversion, just complete the request. */
 			Request *request = buffer->request();
 			pipe->completeBuffer(request, buffer);
@@ -757,16 +758,16 @@ void SimpleCameraData::bufferReady(FrameBuffer *buffer)
 		if (buffer->metadata().status != FrameMetadata::FrameCancelled)
 			video_->queueBuffer(buffer);
 
-		if (converterQueue_.empty())
+		if (conversionQueue_.empty())
 			return;
 
 		Request *request = nullptr;
-		for (auto &item : converterQueue_.front()) {
+		for (auto &item : conversionQueue_.front()) {
 			FrameBuffer *outputBuffer = item.second;
 			request = outputBuffer->request();
 			pipe->completeBuffer(request, outputBuffer);
 		}
-		converterQueue_.pop();
+		conversionQueue_.pop();
 
 		if (request)
 			pipe->completeRequest(request);
@@ -783,9 +784,9 @@ void SimpleCameraData::bufferReady(FrameBuffer *buffer)
 	 */
 	Request *request = buffer->request();
 
-	if (useConverter_ && !converterQueue_.empty()) {
+	if (useConversion_ && !conversionQueue_.empty()) {
 		const std::map<unsigned int, FrameBuffer *> &outputs =
-			converterQueue_.front();
+			conversionQueue_.front();
 		if (!outputs.empty()) {
 			FrameBuffer *outputBuffer = outputs.begin()->second;
 			if (outputBuffer)
@@ -802,14 +803,14 @@ void SimpleCameraData::bufferReady(FrameBuffer *buffer)
 	 * conversion is needed. If there's no queued request, just requeue the
 	 * captured buffer for capture.
 	 */
-	if (useConverter_) {
-		if (converterQueue_.empty()) {
+	if (useConversion_) {
+		if (conversionQueue_.empty()) {
 			video_->queueBuffer(buffer);
 			return;
 		}
 
-		converter_->queueBuffers(buffer, converterQueue_.front());
-		converterQueue_.pop();
+		converter_->queueBuffers(buffer, conversionQueue_.front());
+		conversionQueue_.pop();
 		return;
 	}
 
@@ -818,13 +819,13 @@ void SimpleCameraData::bufferReady(FrameBuffer *buffer)
 	pipe->completeRequest(request);
 }
 
-void SimpleCameraData::converterInputDone(FrameBuffer *buffer)
+void SimpleCameraData::conversionInputDone(FrameBuffer *buffer)
 {
 	/* Queue the input buffer back for capture. */
 	video_->queueBuffer(buffer);
 }
 
-void SimpleCameraData::converterOutputDone(FrameBuffer *buffer)
+void SimpleCameraData::conversionOutputDone(FrameBuffer *buffer)
 {
 	SimplePipelineHandler *pipe = SimpleCameraData::pipe();
 
@@ -1193,14 +1194,14 @@ int SimplePipelineHandler::configure(Camera *camera, CameraConfiguration *c)
 
 	/* Configure the converter if needed. */
 	std::vector<std::reference_wrapper<StreamConfiguration>> outputCfgs;
-	data->useConverter_ = config->needConversion();
+	data->useConversion_ = config->needConversion();
 
 	for (unsigned int i = 0; i < config->size(); ++i) {
 		StreamConfiguration &cfg = config->at(i);
 
 		cfg.setStream(&data->streams_[i]);
 
-		if (data->useConverter_)
+		if (data->useConversion_)
 			outputCfgs.push_back(cfg);
 	}
 
@@ -1226,7 +1227,7 @@ int SimplePipelineHandler::exportFrameBuffers(Camera *camera, Stream *stream,
 	 * Export buffers on the converter or capture video node, depending on
 	 * whether the converter is used or not.
 	 */
-	if (data->useConverter_)
+	if (data->useConversion_)
 		return data->converter_->exportBuffers(data->streamIndex(stream),
 						       count, buffers);
 	else
@@ -1247,13 +1248,13 @@ int SimplePipelineHandler::start(Camera *camera, [[maybe_unused]] const ControlL
 		return -EBUSY;
 	}
 
-	if (data->useConverter_) {
+	if (data->useConversion_) {
 		/*
 		 * When using the converter allocate a fixed number of internal
 		 * buffers.
 		 */
 		ret = video->allocateBuffers(kNumInternalBuffers,
-					     &data->converterBuffers_);
+					     &data->conversionBuffers_);
 	} else {
 		/* Otherwise, prepare for using buffers from the only stream. */
 		Stream *stream = &data->streams_[0];
@@ -1272,7 +1273,7 @@ int SimplePipelineHandler::start(Camera *camera, [[maybe_unused]] const ControlL
 		return ret;
 	}
 
-	if (data->useConverter_) {
+	if (data->useConversion_) {
 		ret = data->converter_->start();
 		if (ret < 0) {
 			stop(camera);
@@ -1280,7 +1281,7 @@ int SimplePipelineHandler::start(Camera *camera, [[maybe_unused]] const ControlL
 		}
 
 		/* Queue all internal buffers for capture. */
-		for (std::unique_ptr<FrameBuffer> &buffer : data->converterBuffers_)
+		for (std::unique_ptr<FrameBuffer> &buffer : data->conversionBuffers_)
 			video->queueBuffer(buffer.get());
 	}
 
@@ -1292,7 +1293,7 @@ void SimplePipelineHandler::stopDevice(Camera *camera)
 	SimpleCameraData *data = cameraData(camera);
 	V4L2VideoDevice *video = data->video_;
 
-	if (data->useConverter_)
+	if (data->useConversion_)
 		data->converter_->stop();
 
 	video->streamOff();
@@ -1300,7 +1301,7 @@ void SimplePipelineHandler::stopDevice(Camera *camera)
 
 	video->bufferReady.disconnect(data, &SimpleCameraData::bufferReady);
 
-	data->converterBuffers_.clear();
+	data->conversionBuffers_.clear();
 
 	releasePipeline(data);
 }
@@ -1318,7 +1319,7 @@ int SimplePipelineHandler::queueRequestDevice(Camera *camera, Request *request)
 		 * queue, it will be handed to the converter in the capture
 		 * completion handler.
 		 */
-		if (data->useConverter_) {
+		if (data->useConversion_) {
 			buffers.emplace(data->streamIndex(stream), buffer);
 		} else {
 			ret = data->video_->queueBuffer(buffer);
@@ -1327,8 +1328,8 @@ int SimplePipelineHandler::queueRequestDevice(Camera *camera, Request *request)
 		}
 	}
 
-	if (data->useConverter_)
-		data->converterQueue_.push(std::move(buffers));
+	if (data->useConversion_)
+		data->conversionQueue_.push(std::move(buffers));
 
 	return 0;
 }