X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fsound%2Fsound.c;h=ede33f11fd8cc92915f37e5c12e40044d0b6d710;hb=c7fd7bb8b7bc6342026a42e5316bd275a2f815c7;hp=5bb8e9d89fc216358958c98572e5ce1dae3db880;hpb=f6c49d38cbb965c502ca2af66d76e92f95acda7c;p=picodrive.git

diff --git a/pico/sound/sound.c b/pico/sound/sound.c
index 5bb8e9d..ede33f1 100644
--- a/pico/sound/sound.c
+++ b/pico/sound/sound.c
@@ -1,11 +1,11 @@
-// This is part of Pico Library
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006,2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
+/*
+ * PicoDrive
+ * (c) Copyright Dave, 2004
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <string.h>
 #include "ym2612.h"
@@ -14,6 +14,8 @@
 #include "../cd/pcm.h"
 #include "mix.h"
 
+#define SIMPLE_WRITE_SOUND 0
+
 void (*PsndMix_32_to_16l)(short *dest, int *src, int count) = mix_32_to_16l_stereo;
 
 // master int buffer to mix to
@@ -181,6 +183,9 @@ PICO_INTERNAL void PsndDoDAC(int line_to)
   int dout = ym2612.dacout;
   int line_from = PsndDacLine;
 
+  if (line_to >= 312)
+    line_to = 311;
+
   PsndDacLine = line_to + 1;
 
   pos =dac_info[line_from]>>4;
@@ -337,6 +342,7 @@ static int PsndRender(int offset, int length)
     memset32(buf32, 0, length<<stereo);
 
 //printf("active_chs: %02x\n", buf32_updated);
+  (void)buf32_updated;
 
   // CD: PCM sound
   if (do_pcm) {
@@ -375,7 +381,8 @@ PICO_INTERNAL void PsndGetSamples(int y)
 #if SIMPLE_WRITE_SOUND
   if (y != 224) return;
   PsndRender(0, PsndLen);
-  if (PicoWriteSound) PicoWriteSound(PsndLen);
+  if (PicoWriteSound)
+    PicoWriteSound(PsndLen * ((PicoOpt & POPT_EN_STEREO) ? 4 : 2));
   PsndClear();
 #else
   static int curr_pos = 0;
@@ -385,8 +392,11 @@ PICO_INTERNAL void PsndGetSamples(int y)
     if (emustatus & 2)
          curr_pos += PsndRender(curr_pos, PsndLen-PsndLen/2);
     else curr_pos  = PsndRender(0, PsndLen);
-    if (emustatus&1) emustatus|=2; else emustatus&=~2;
-    if (PicoWriteSound) PicoWriteSound(curr_pos);
+    if (emustatus & 1)
+         emustatus |=  2;
+    else emustatus &= ~2;
+    if (PicoWriteSound)
+      PicoWriteSound(curr_pos * ((PicoOpt & POPT_EN_STEREO) ? 4 : 2));
     // clear sound buffer
     PsndClear();
   }
@@ -424,7 +434,7 @@ PICO_INTERNAL void PsndGetSamplesMS(void)
   }
 
   if (PicoWriteSound != NULL)
-    PicoWriteSound(length);
+    PicoWriteSound(length * ((PicoOpt & POPT_EN_STEREO) ? 4 : 2));
   PsndClear();
 }