System: PSF (Portable Sound Format) loading support

src/core/psf_loader.h

@@ -0,0 +1,47 @@
+#pragma once
+#include "types.h"
+#include <map>
+#include <optional>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace PSFLoader {
+
+#pragma pack(push, 1)
+struct PSFHeader
+{
+  u8 id[3];
+  u8 version;
+  u32 reserved_area_size;
+  u32 compressed_program_size;
+  u32 program_crc32;
+};
+#pragma pack(pop)
+
+class File
+{
+public:
+  using TagMap = std::map<std::string, std::string>;
+  using ProgramData = std::vector<u8>;
+
+  ALWAYS_INLINE const ProgramData& GetProgramData() const { return m_program_data; }
+  ALWAYS_INLINE const TagMap& GetTagMap() const { return m_tags; }
+
+  std::string GetTagString(const char* tag_name, const char* default_value) const;
+  int GetTagInt(const char* tag_name, int default_value) const;
+  float GetTagFloat(const char* tag_name, float default_value) const;
+
+  bool Load(const char* path);
+
+private:
+  enum : u32
+  {
+    MAX_PROGRAM_SIZE = 2 * 1024 * 1024
+  };
+
+  ProgramData m_program_data;
+  TagMap m_tags;
+};
+
+} // namespace PSFLoader