rnd-20040821-4-src

[rocksndiamonds.git] / src / game_em / ulaw_generate.c

diff --git a/src/game_em/ulaw_generate.c b/src/game_em/ulaw_generate.c
index 05ab83e989cde14b74e2a3c32cb66e37112f4653..8f0d7b06454c5a8452dbbdd8b7ac3167a52724c0 100644 (file)
--- a/src/game_em/ulaw_generate.c
+++ b/src/game_em/ulaw_generate.c
@@ -18,45 +18,6 @@ unsigned char calc_linear_to_ulaw(int);
 
 int buffer[65536];
 
-#if 0
-
-void print_buffer(int *buffer, int count)
-{
-       int i,j;
-       j = 0;
-       for(i = 0; i < count;) {
-               if(j > 80) { j=0; printf("\n"); }
-               if(j == 0) printf("\t");
-               j += printf("%d", buffer[i]);
-               j += printf("%s", ++i == count ? "" : ",");
-       }
-       if(j) printf("\n");
-}
-int main_OLD(void)
-{
-       int i;
-       printf("/* THIS FILE AUTOMATICALLY GENERATED */\n");
-       printf("\n#if defined(LINUX) || defined(BSD)\n");
-       printf("\n/* convert from 8 bit ulaw to signed 16 bit linear */\n");
-       printf("const short ulaw_to_linear[256] = {\n");
-       for(i = 0; i < 256; i++) {
-               buffer[i] = calc_ulaw_to_linear(i);
-       }
-       print_buffer(buffer, 256);
-       printf("};\n");
-       printf("\n/* convert from signed 16 bit linear to 8 bit ulaw */\n");
-       printf("const unsigned char linear_to_ulaw[65536] = {\n");
-       for(i = -32768; i < 32768; i++) {
-               buffer[i + 32768] = calc_linear_to_ulaw(i);
-       }
-       print_buffer(buffer, 65536);
-       printf("};\n");
-       printf("\n#endif /* defined(LINUX) || defined(BSD) */\n");
-       return(0);
-}
-
-#endif
-
 /* convert from 8 bit ulaw to signed 16 bit linear */
 short ulaw_to_linear[256];
 
@@ -92,18 +53,18 @@ void ulaw_generate()
 
 int calc_ulaw_to_linear(unsigned char ulawbyte)
 {
-       static int exp_lut[8] = { 0, 132, 396, 924, 1980, 4092, 8316, 16764 };
-       int sign, exponent, mantissa, sample;
-
-       ulawbyte = ~ ulawbyte;
-       sign = ( ulawbyte & 0x80 );
-       exponent = ( ulawbyte >> 4 ) & 0x07;
-       mantissa = ulawbyte & 0x0F;
-       sample = exp_lut[exponent] + ( mantissa << ( exponent + 3 ) );
-       if (sign != 0)
-               sample = -sample;
-
-       return(sample);
+  static int exp_lut[8] = { 0, 132, 396, 924, 1980, 4092, 8316, 16764 };
+  int sign, exponent, mantissa, sample;
+
+  ulawbyte = ~ ulawbyte;
+  sign = ( ulawbyte & 0x80 );
+  exponent = ( ulawbyte >> 4 ) & 0x07;
+  mantissa = ulawbyte & 0x0F;
+  sample = exp_lut[exponent] + ( mantissa << ( exponent + 3 ) );
+  if (sign != 0)
+    sample = -sample;
+
+  return(sample);
 }
 
 /*
@@ -133,47 +94,47 @@ int calc_ulaw_to_linear(unsigned char ulawbyte)
 
 unsigned char calc_linear_to_ulaw(int sample)
 {
-       static int exp_lut[256] =
-       {
-               0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
-               4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
-               5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
-               5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
-               6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-               6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-               6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-               6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-               7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
-       };
-
-       int sign, exponent, mantissa;
-       unsigned char ulawbyte;
+  static int exp_lut[256] =
+  {
+    0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
+    4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
+    5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+    5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
+  };
+
+  int sign, exponent, mantissa;
+  unsigned char ulawbyte;
 
 /* Get the sample into sign-magnitude. */
-       sign = (sample >> 8) & 0x80; /* set aside the sign */
-       if (sign != 0)
-               sample = -sample; /* get magnitude */
-       if (sample > CLIP)
-               sample = CLIP; /* clip the magnitude */
+  sign = (sample >> 8) & 0x80; /* set aside the sign */
+  if (sign != 0)
+    sample = -sample; /* get magnitude */
+  if (sample > CLIP)
+    sample = CLIP; /* clip the magnitude */
 
 /* Convert from 16 bit linear to ulaw. */
-       sample = sample + BIAS;
-       exponent = exp_lut[( sample >> 7 ) & 0xFF];
-       mantissa = ( sample >> ( exponent + 3 ) ) & 0x0F;
-       ulawbyte = ~ ( sign | ( exponent << 4 ) | mantissa );
+  sample = sample + BIAS;
+  exponent = exp_lut[( sample >> 7 ) & 0xFF];
+  mantissa = ( sample >> ( exponent + 3 ) ) & 0x0F;
+  ulawbyte = ~ ( sign | ( exponent << 4 ) | mantissa );
 #ifdef ZEROTRAP
-       if (ulawbyte == 0)
-               ulawbyte = 0x02; /* optional CCITT trap */
+  if (ulawbyte == 0)
+    ulawbyte = 0x02; /* optional CCITT trap */
 #endif
 
-       return(ulawbyte);
+  return(ulawbyte);
 }
 
 #endif /* defined(PLATFORM_LINUX) || defined(PLATFORM_BSD) */