X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=pico%2Fsound%2Fsound.c;h=b1204e2277c5a5e6cbf36355aa9acf58e0b4a0fe;hb=8a19f430a526d011f593b633ea3811fc534123ea;hp=e1e0408c79a17d1b4d2b7229be2d4b50a3fa80eb;hpb=c8d1e9b66255c00a3bef7ca27ae019e3523d7a4b;p=picodrive.git

diff --git a/pico/sound/sound.c b/pico/sound/sound.c
index e1e0408..b1204e2 100644
--- a/pico/sound/sound.c
+++ b/pico/sound/sound.c
@@ -396,3 +396,33 @@ PICO_INTERNAL void PsndGetSamples(int y)
 #endif
 }
 
+PICO_INTERNAL void PsndGetSamplesMS(void)
+{
+  int stereo = (PicoOpt & 8) >> 3;
+  int length = PsndLen;
+
+#if !SIMPLE_WRITE_SOUND
+  // compensate for float part of PsndLen
+  PsndLen_exc_cnt += PsndLen_exc_add;
+  if (PsndLen_exc_cnt >= 0x10000) {
+    PsndLen_exc_cnt -= 0x10000;
+    length++;
+  }
+#endif
+
+  // PSG
+  if (PicoOpt & POPT_EN_PSG)
+    SN76496Update(PsndOut, length, stereo);
+
+  // upmix to "stereo" if needed
+  if (stereo) {
+    int i, *p;
+    for (i = length, p = (void *)PsndOut; i > 0; i--, p++)
+      *p |= *p << 16;
+  }
+
+  if (PicoWriteSound != NULL)
+    PicoWriteSound(length);
+  PsndClear();
+}
+