X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fsound%2Fsound.c;h=daf62b012696728d16a39e98fd93c0f6e3129054;hb=74f5e726ba66ace3c4976a4ac5f13a92fdbfbae1;hp=39ae2910e6fe39fdaa05d0d8a82bb88e526c0795;hpb=1cfc5cc4ce06642b9bc45ca3b9d32793718e9455;p=picodrive.git

diff --git a/pico/sound/sound.c b/pico/sound/sound.c
index 39ae291..daf62b0 100644
--- a/pico/sound/sound.c
+++ b/pico/sound/sound.c
@@ -297,7 +297,7 @@ PICO_INTERNAL void PsndClear(void)
 }
 
 
-PICO_INTERNAL int PsndRender(int offset, int length)
+static int PsndRender(int offset, int length)
 {
   int  buf32_updated = 0;
   int *buf32 = PsndBuffer+offset;
@@ -361,6 +361,35 @@ PICO_INTERNAL int PsndRender(int offset, int length)
   return length;
 }
 
+// to be called on 224 or line_sample scanlines only
+PICO_INTERNAL void PsndGetSamples(int y)
+{
+#if SIMPLE_WRITE_SOUND
+  if (y != 224) return;
+  PsndRender(0, PsndLen);
+  if (PicoWriteSound) PicoWriteSound(PsndLen);
+  PsndClear();
+#else
+  static int curr_pos = 0;
+
+  if (y == 224)
+  {
+    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);
+    // clear sound buffer
+    PsndClear();
+  }
+  else if (emustatus & 3) {
+    emustatus|= 2;
+    emustatus&=~1;
+    curr_pos = PsndRender(0, PsndLen/2);
+  }
+#endif
+}
+
 
 // -----------------------------------------------------------------
 //                            z80 stuff