Cleanup: some const-correctness.

4 files changed, 9 insertions, 8 deletions

diff --git a/src/lib/raw_image_proxy.cc b/src/lib/raw_image_proxy.cc
index 9b486dd5c..c606ddd99 100644
--- a/src/lib/raw_image_proxy.cc
+++ b/src/lib/raw_image_proxy.cc
@@ -45,7 +45,7 @@ using boost::optional;
 using dcp::raw_convert;
 
 
-RawImageProxy::RawImageProxy (shared_ptr<Image> image)
+RawImageProxy::RawImageProxy(shared_ptr<const Image> image)
 	: _image (image)
 {
 
@@ -58,8 +58,9 @@ RawImageProxy::RawImageProxy (shared_ptr<cxml::Node> xml, shared_ptr<Socket> soc
 		xml->number_child<int>("Width"), xml->number_child<int>("Height")
 		);
 
-	_image = make_shared<Image>(static_cast<AVPixelFormat>(xml->number_child<int>("PixelFormat")), size, Image::Alignment::PADDED);
-	_image->read_from_socket (socket);
+	auto image = make_shared<Image>(static_cast<AVPixelFormat>(xml->number_child<int>("PixelFormat")), size, Image::Alignment::PADDED);
+	image->read_from_socket (socket);
+	_image = image;
 }
 
 
diff --git a/src/lib/raw_image_proxy.h b/src/lib/raw_image_proxy.h
index 1111b66c0..d5ae2457d 100644
--- a/src/lib/raw_image_proxy.h
+++ b/src/lib/raw_image_proxy.h
@@ -29,7 +29,7 @@
 class RawImageProxy : public ImageProxy
 {
 public:
-	explicit RawImageProxy (std::shared_ptr<Image>);
+	explicit RawImageProxy(std::shared_ptr<const Image>);
 	RawImageProxy (std::shared_ptr<cxml::Node> xml, std::shared_ptr<Socket> socket);
 
 	Result image (
@@ -43,7 +43,7 @@ public:
 	size_t memory_used () const override;
 
 private:
-	std::shared_ptr<Image> _image;
+	std::shared_ptr<const Image> _image;
 };
 
 
diff --git a/src/lib/video_filter_graph.cc b/src/lib/video_filter_graph.cc
index 1cc142520..64f7deb19 100644
--- a/src/lib/video_filter_graph.cc
+++ b/src/lib/video_filter_graph.cc
@@ -51,10 +51,10 @@ VideoFilterGraph::VideoFilterGraph (dcp::Size s, AVPixelFormat p, dcp::Fraction
 /** Take an AVFrame and process it using our configured filters, returning a
  *  set of Images.  Caller handles memory management of the input frame.
  */
-list<pair<shared_ptr<Image>, int64_t>>
+list<pair<shared_ptr<const Image>, int64_t>>
 VideoFilterGraph::process (AVFrame* frame)
 {
-	list<pair<shared_ptr<Image>, int64_t>> images;
+	list<pair<shared_ptr<const Image>, int64_t>> images;
 
 	if (_copy) {
 		images.push_back (make_pair(make_shared<Image>(frame, Image::Alignment::PADDED), frame->best_effort_timestamp));
diff --git a/src/lib/video_filter_graph.h b/src/lib/video_filter_graph.h
index d887e551b..e120fb467 100644
--- a/src/lib/video_filter_graph.h
+++ b/src/lib/video_filter_graph.h
@@ -28,7 +28,7 @@ public:
 	VideoFilterGraph (dcp::Size s, AVPixelFormat p, dcp::Fraction r);
 
 	bool can_process (dcp::Size s, AVPixelFormat p) const;
-	std::list<std::pair<std::shared_ptr<Image>, int64_t>> process (AVFrame * frame);
+	std::list<std::pair<std::shared_ptr<const Image>, int64_t>> process (AVFrame * frame);
 
 protected:
 	std::string src_parameters () const override;