Changeset 59:db97b72a53ca in roaraudio

Timestamp:

07/12/08 12:18:18 (16 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added another non-working resampling code

File:

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

libroardsp/convert.c

@@ -97 +97 @@
 
 int roar_conv_rate_16 (void * out, void * in, int samples, int from, int to, int channels) {
+ int16_t * ip = (int16_t*) in, * op = (int16_t*) out;
+ int i, j;
+ int max;
+ int teiler = -1;
+
+
+ if ( from > to ) {
+  return -1;
+ } else {
+  for (i = 8; i > 0; i--) {
+   if ( from * i == to ) {
+    teiler = i;
+    break;
+   }
+  }
+
+  if ( teiler == -1 )
+   return -1;
+
+  if ( channels == 2 ) {
+   max = (samples-1)/(2*teiler);
+
+   for (i = 0; i < max; i++) {
+    for (j = 0; j < teiler; j++) {
+     op[teiler*i*2     + j] = ip[i];
+     op[teiler*i*2 + 2 + j] = ip[i+1];
+    }
+   }
+
+  } else if ( channels == 1 ) {
+   max = (samples-1)/teiler;
+
+   for (i = 0; i < max; i++) {
+    for (j = 0; j < teiler; j++) {
+     op[teiler*i + j] = ip[i];
+    }
+   }
+
+  } else {
+   return -1;
+   max = (samples-1)/teiler;
+
+   for (i = 0; i < max; i++) {
+    for (j = 0; j < teiler; j++) {
+//      printf("op[teiler*i + j = %i] = ip[i=%i]; // samples=%i, teiler=%i, channels=%i\n",
+//                teiler*i + j, i + ((i+j) % channels), samples, teiler, channels);
+      op[teiler*i + j] = ip[i + ((i+j) % channels)];
+    }
+   }
+  }
+
+  return 0;
+ }
+
  return -1;
 }