3 files changed, 13 insertions, 10 deletions
diff --git a/include/libcamera/internal/converter.h b/include/libcamera/internal/converter.h
index 5d74db6b..b51563d7 100644
--- a/include/libcamera/internal/converter.h
+++ b/include/libcamera/internal/converter.h
@@ -26,6 +26,7 @@ namespace libcamera {
 class FrameBuffer;
 class MediaDevice;
 class PixelFormat;
+class Stream;
 struct StreamConfiguration;
 
 class Converter
@@ -46,14 +47,14 @@ public:
 
 	virtual int configure(const StreamConfiguration &inputCfg,
 			      const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs) = 0;
-	virtual int exportBuffers(unsigned int output, unsigned int count,
+	virtual int exportBuffers(const Stream *stream, unsigned int count,
 				  std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
 
 	virtual int start() = 0;
 	virtual void stop() = 0;
 
 	virtual int queueBuffers(FrameBuffer *input,
-				 const std::map<unsigned int, FrameBuffer *> &outputs) = 0;
+				 const std::map<const Stream *, FrameBuffer *> &outputs) = 0;
 
 	Signal<FrameBuffer *> inputBufferReady;
 	Signal<FrameBuffer *> outputBufferReady;
diff --git a/include/libcamera/internal/converter/converter_v4l2_m2m.h b/include/libcamera/internal/converter/converter_v4l2_m2m.h
index 1126050c..b9e59899 100644
--- a/include/libcamera/internal/converter/converter_v4l2_m2m.h
+++ b/include/libcamera/internal/converter/converter_v4l2_m2m.h
@@ -28,6 +28,7 @@ class FrameBuffer;
 class MediaDevice;
 class Size;
 class SizeRange;
+class Stream;
 struct StreamConfiguration;
 class V4L2M2MDevice;
 
@@ -47,20 +48,20 @@ public:
 
 	int configure(const StreamConfiguration &inputCfg,
 		      const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfg);
-	int exportBuffers(unsigned int output, unsigned int count,
+	int exportBuffers(const Stream *stream, unsigned int count,
 			  std::vector<std::unique_ptr<FrameBuffer>> *buffers);
 
 	int start();
 	void stop();
 
 	int queueBuffers(FrameBuffer *input,
-			 const std::map<unsigned int, FrameBuffer *> &outputs);
+			 const std::map<const Stream *, FrameBuffer *> &outputs);
 
 private:
-	class Stream : protected Loggable
+	class V4L2M2MStream : protected Loggable
 	{
 	public:
-		Stream(V4L2M2MConverter *converter, unsigned int index);
+		V4L2M2MStream(V4L2M2MConverter *converter, const Stream *stream);
 
 		bool isValid() const { return m2m_ != nullptr; }
 
@@ -82,7 +83,7 @@ private:
 		void outputBufferReady(FrameBuffer *buffer);
 
 		V4L2M2MConverter *converter_;
-		unsigned int index_;
+		const Stream *stream_;
 		std::unique_ptr<V4L2M2MDevice> m2m_;
 
 		unsigned int inputBufferCount_;
@@ -91,7 +92,7 @@ private:
 
 	std::unique_ptr<V4L2M2MDevice> m2m_;
 
-	std::vector<Stream> streams_;
+	std::map<const Stream *, std::unique_ptr<V4L2M2MStream>> streams_;
 	std::map<FrameBuffer *, unsigned int> queue_;
 };
 
diff --git a/include/libcamera/internal/software_isp/software_isp.h b/include/libcamera/internal/software_isp/software_isp.h
index c5338c05..f8e00003 100644
--- a/include/libcamera/internal/software_isp/software_isp.h
+++ b/include/libcamera/internal/software_isp/software_isp.h
@@ -37,6 +37,7 @@ namespace libcamera {
 class DebayerCpu;
 class FrameBuffer;
 class PixelFormat;
+class Stream;
 struct StreamConfiguration;
 
 LOG_DECLARE_CATEGORY(SoftwareIsp)
@@ -62,7 +63,7 @@ public:
 		      const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs,
 		      const ControlInfoMap &sensorControls);
 
-	int exportBuffers(unsigned int output, unsigned int count,
+	int exportBuffers(const Stream *stream, unsigned int count,
 			  std::vector<std::unique_ptr<FrameBuffer>> *buffers);
 
 	void processStats(const ControlList &sensorControls);
@@ -71,7 +72,7 @@ public:
 	void stop();
 
 	int queueBuffers(FrameBuffer *input,
-			 const std::map<unsigned int, FrameBuffer *> &outputs);
+			 const std::map<const Stream *, FrameBuffer *> &outputs);
 
 	void process(FrameBuffer *input, FrameBuffer *output);