Changeset 2796:ed4b8a2ee05a in roaraudio

Timestamp:

09/26/09 13:35:38 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

try a XOR based solution

File:

• libroardsp/convert.c (modified) (1 diff)

libroardsp/convert.c

@@ -689 +689 @@
  int16_t  * ip = in;
  uint16_t * op = out;
- register int_least32_t s;
  int i;
 
  for(i = 0; i < samples; i++) {
-  s     = ip[i];
-  s    += 32768;
-  op[i] = s;
+  op[i] = ip[i];
+
+  if ( ip[i] & 0x8000 ) {
+   op[i] = ip[i] ^ 0xFFFF;
+  } else {
+   op[i] = ip[i] ^ 0x8000;
+  }
  }