1 files changed, 43 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6pre/gme/s_logtbl.h b/plugins/gme/game-music-emu-0.6pre/gme/s_logtbl.h
new file mode 100644
index 00000000..3abc79c1
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6pre/gme/s_logtbl.h
@@ -0,0 +1,43 @@
+#ifndef S_LOGTBL_H__
+#define S_LOGTBL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define LOG_BITS 12
+#define LIN_BITS 7
+#define LOG_LIN_BITS 30
+
+typedef struct
+{
+	void *ctx;
+	void (*release)(void *ctx);
+	Uint32 lineartbl[(1 << LIN_BITS) + 1];
+	Uint32 logtbl[1 << LOG_BITS];
+} KMIF_LOGTABLE;
+
+KMIF_LOGTABLE *LogTableAddRef(void);
+
+__inline static Uint32 LinToLog(KMIF_LOGTABLE *kmif_lt, Int32 l)
+{
+	return (l < 0) ? (kmif_lt->lineartbl[-l] + 1) : kmif_lt->lineartbl[l];
+}
+
+__inline static Int32 LogToLin(KMIF_LOGTABLE *kmif_lt, Int32 l, Uint32 sft)
+{
+	Int32 ret;
+	Uint32 ofs;
+	ofs = l + (sft << (LOG_BITS + 1));
+	sft = ofs >> (LOG_BITS + 1);
+	if (sft >= LOG_LIN_BITS) return 0;
+	ofs = (ofs >> 1) & ((1 << LOG_BITS) - 1);
+	ret = kmif_lt->logtbl[ofs] >> sft;
+	return (l & 1) ? -ret : ret;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* S_LOGTBL_H__ */