From 42cebc00dcb5c274c96f69bb2658906d1ce269ec Mon Sep 17 00:00:00 2001
From: Neil Millstone
Date: Sat, 22 Jul 2006 10:56:11 +0000
Subject: Speed increase for DS port - uses cache ram to store SIN_TABLE. 
 Other versions are unaffected.

svn-id: r23552
---
 sound/fmopl.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'sound')

diff --git a/sound/fmopl.cpp b/sound/fmopl.cpp
index ff16541732..a1c58ee310 100644
--- a/sound/fmopl.cpp
+++ b/sound/fmopl.cpp
@@ -637,10 +637,17 @@ static int OPLOpenTable(void) {
 	/* allocate dynamic tables */
 	if((TL_TABLE = (int *)malloc(TL_MAX * 2 * sizeof(int))) == NULL)
 		return 0;
+
+#ifdef __DS__
+	// On the DS, use fast RAM for the sine table, since it thrashes the cache otherwise
+	SIN_TABLE = ((int **) (0x37F8000));
+#else
 	if((SIN_TABLE = (int **)malloc(SIN_ENT * 4 * sizeof(int *))) == NULL) {
 		free(TL_TABLE);
 		return 0;
 	}
+#endif
+
 	if((AMS_TABLE = (int *)malloc(AMS_ENT * 2 * sizeof(int))) == NULL) {
 		free(TL_TABLE);
 		free(SIN_TABLE);
@@ -1186,6 +1193,8 @@ FM_OPL *makeAdlibOPL(int rate) {
 		env_bits = FMOPL_ENV_BITS_LQ;
 		eg_ent = FMOPL_EG_ENT_LQ;
 	}
+	env_bits = FMOPL_ENV_BITS_MQ;
+	eg_ent = FMOPL_EG_ENT_MQ;
 #endif
 
 	OPLBuildTables(env_bits, eg_ent);
-- 
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