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src/content/stream_reader.hpp

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+#pragma once
+
+#include <solanaceae/util/span.hpp>
+
+// most media that can be counted as "stream" comes in packets/frames/messages
+// so this class provides an interface for ideal async fetching of frames
+struct RawFrameStreamReaderI {
+	// return the number of ready frames in cache
+	// returns -1 if unknown
+	virtual int64_t have(void) = 0;
+
+	// get next frame, empty if none
+	virtual ByteSpan getNext(void) = 0;
+};
+