refactoring

core/src/utils/riff.h

@@ -0,0 +1,43 @@
+#pragma once
+#include <mutex>
+#include <fstream>
+#include <string>
+#include <stack>
+#include <stdint.h>
+
+namespace riff {
+#pragma pack(push, 1)
+    struct ChunkHeader {
+        char id[4];
+        uint32_t size;
+    };
+#pragma pack(pop)
+
+    struct ChunkDesc {
+        ChunkHeader hdr;
+        std::streampos pos;
+    };
+
+    class Writer {
+    public:
+        bool open(std::string path, const char form[4]);
+        bool isOpen();
+        void close();
+
+        void beginList(const char id[4]);
+        void endList();
+
+        void beginChunk(const char id[4]);
+        void endChunk();
+
+        void write(const uint8_t* data, size_t len);
+
+    private:
+        void beginRIFF(const char form[4]);
+        void endRIFF();
+
+        std::recursive_mutex mtx;
+        std::ofstream file;
+        std::stack<ChunkDesc> chunks;
+    };
+}