libcamera: request: Make Stream pointer const

The Stream pointer just acts as a key in the Request object. There is no
good use-case to modify a stream from a pointer retrieved from the
Request, make it const. This allows pipeline handlers to better express
that the Stream pointer is retrieved in a Request should just be treated
as a key.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/src/cam/capture.cpp b/src/cam/capture.cpp
index 07203769..af9029b7 100644
--- a/src/cam/capture.cpp
+++ b/src/cam/capture.cpp
@@ -169,7 +169,7 @@ void Capture::requestComplete(Request *request)
 	info << "fps: " << std::fixed << std::setprecision(2) << fps;
 
 	for (auto it = buffers.begin(); it != buffers.end(); ++it) {
-		Stream *stream = it->first;
+		const Stream *stream = it->first;
 		FrameBuffer *buffer = it->second;
 		const std::string &name = streamName_[stream];
 
@@ -209,7 +209,7 @@ void Capture::requestComplete(Request *request)
 	}
 
 	for (auto it = buffers.begin(); it != buffers.end(); ++it) {
-		Stream *stream = it->first;
+		const Stream *stream = it->first;
 		FrameBuffer *buffer = it->second;
 
 		request->addBuffer(stream, buffer);
diff --git a/src/cam/capture.h b/src/cam/capture.h
index 32940a2a..b4e39d51 100644
--- a/src/cam/capture.h
+++ b/src/cam/capture.h
@@ -36,7 +36,7 @@ private:
 	std::shared_ptr<libcamera::Camera> camera_;
 	libcamera::CameraConfiguration *config_;
 
-	std::map<libcamera::Stream *, std::string> streamName_;
+	std::map<const libcamera::Stream *, std::string> streamName_;
 	BufferWriter *writer_;
 	std::chrono::steady_clock::time_point last_;