#include <glib.h>
-/* #define ZEROTRAP *//* turn on the trap as per the MIL-STD */
+#include "mulaw-conversion.h"
+
+#undef ZEROTRAP /* turn on the trap as per the MIL-STD */
#define BIAS 0x84 /* define the add-in bias for 16 bit samples */
#define CLIP 32635
void
mulaw_encode (gint16 * in, guint8 * out, gint numsamples)
{
- static gint16 exp_lut[256] = { 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
+ static const gint16 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,
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
};
- gint16 sign, exponent, mantissa, i;
+ gint16 sign, exponent, mantissa;
gint16 sample;
guint8 ulawbyte;
+ gint i;
for (i = 0; i < numsamples; i++) {
sample = in[i];
void
mulaw_decode (guint8 * in, gint16 * out, gint numsamples)
{
- static gint16 exp_lut[8] = { 0, 132, 396, 924, 1980, 4092, 8316, 16764 };
+ static const gint16 exp_lut[8] =
+ { 0, 132, 396, 924, 1980, 4092, 8316, 16764 };
gint16 sign, exponent, mantissa;
guint8 ulawbyte;
- gint16 linear, i;
+ gint16 linear;
+ gint i;
for (i = 0; i < numsamples; i++) {
ulawbyte = in[i];