torsava / rpms / python3

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--- python/branches/py3k/Modules/audioop.c	2009/05/16 01:46:11	72674
+++ python/branches/py3k/Modules/audioop.c	2010/05/09 15:52:27	81032
@@ -53,13 +53,13 @@
 static PyInt16
 search(PyInt16 val, PyInt16 *table, int size)
 {
-        int i;
+    int i;
 
-        for (i = 0; i < size; i++) {
-                if (val <= *table++)
-                        return (i);
-        }
-        return (size);
+    for (i = 0; i < size; i++) {
+        if (val <= *table++)
+            return (i);
+    }
+    return (size);
 }
 #define st_ulaw2linear16(uc) (_st_ulaw2linear16[uc])
 #define st_alaw2linear16(uc) (_st_alaw2linear16[uc])
@@ -83,7 +83,7 @@
       -228,    -212,    -196,    -180,    -164,    -148,    -132,
       -120,    -112,    -104,     -96,     -88,     -80,     -72,
        -64,     -56,     -48,     -40,     -32,     -24,     -16,
-        -8,       0,   32124,   31100,   30076,   29052,   28028,
+    -8,       0,   32124,   31100,   30076,   29052,   28028,
      27004,   25980,   24956,   23932,   22908,   21884,   20860,
      19836,   18812,   17788,   16764,   15996,   15484,   14972,
      14460,   13948,   13436,   12924,   12412,   11900,   11388,
@@ -100,8 +100,8 @@
        372,     356,     340,     324,     308,     292,     276,
        260,     244,     228,     212,     196,     180,     164,
        148,     132,     120,     112,     104,      96,      88,
-        80,      72,      64,      56,      48,      40,      32,
-        24,      16,       8,       0
+    80,      72,      64,      56,      48,      40,      32,
+    24,      16,       8,       0
 };
 
 /*
@@ -137,39 +137,39 @@
  * John Wiley & Sons, pps 98-111 and 472-476.
  */
 static unsigned char
-st_14linear2ulaw(PyInt16 pcm_val)	/* 2's complement (14-bit range) */
+st_14linear2ulaw(PyInt16 pcm_val)       /* 2's complement (14-bit range) */
 {
-        PyInt16         mask;
-        PyInt16         seg;
-        unsigned char   uval;
-
-        /* The original sox code does this in the calling function, not here */
-        pcm_val = pcm_val >> 2;
-
-        /* u-law inverts all bits */
-        /* Get the sign and the magnitude of the value. */
-        if (pcm_val < 0) {
-                pcm_val = -pcm_val;
-                mask = 0x7F;
-        } else {
-                mask = 0xFF;
-        }
-        if ( pcm_val > CLIP ) pcm_val = CLIP;           /* clip the magnitude */
-        pcm_val += (BIAS >> 2);
-
-        /* Convert the scaled magnitude to segment number. */
-        seg = search(pcm_val, seg_uend, 8);
-
-        /*
-         * Combine the sign, segment, quantization bits;
-         * and complement the code word.
-         */
-        if (seg >= 8)           /* out of range, return maximum value. */
-                return (unsigned char) (0x7F ^ mask);
-        else {
-                uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);
-                return (uval ^ mask);
-        }
+    PyInt16         mask;
+    PyInt16         seg;
+    unsigned char   uval;
+
+    /* The original sox code does this in the calling function, not here */
+    pcm_val = pcm_val >> 2;
+
+    /* u-law inverts all bits */
+    /* Get the sign and the magnitude of the value. */
+    if (pcm_val < 0) {
+        pcm_val = -pcm_val;
+        mask = 0x7F;
+    } else {
+        mask = 0xFF;
+    }
+    if ( pcm_val > CLIP ) pcm_val = CLIP;           /* clip the magnitude */
+    pcm_val += (BIAS >> 2);
+
+    /* Convert the scaled magnitude to segment number. */
+    seg = search(pcm_val, seg_uend, 8);
+
+    /*
+     * Combine the sign, segment, quantization bits;
+     * and complement the code word.
+     */
+    if (seg >= 8)           /* out of range, return maximum value. */
+        return (unsigned char) (0x7F ^ mask);
+    else {
+        uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);
+        return (uval ^ mask);
+    }
 
 }
 
@@ -234,59 +234,59 @@
  * John Wiley & Sons, pps 98-111 and 472-476.
  */
 static unsigned char
-st_linear2alaw(PyInt16 pcm_val)	/* 2's complement (13-bit range) */
+st_linear2alaw(PyInt16 pcm_val) /* 2's complement (13-bit range) */
 {
-        PyInt16         mask;
-        short           seg;
-        unsigned char   aval;
-
-        /* The original sox code does this in the calling function, not here */
-        pcm_val = pcm_val >> 3;
-
-        /* A-law using even bit inversion */
-        if (pcm_val >= 0) {
-                mask = 0xD5;            /* sign (7th) bit = 1 */
-        } else {
-                mask = 0x55;            /* sign bit = 0 */
-                pcm_val = -pcm_val - 1;
-        }
-
-        /* Convert the scaled magnitude to segment number. */
-        seg = search(pcm_val, seg_aend, 8);
-
-        /* Combine the sign, segment, and quantization bits. */
-
-        if (seg >= 8)           /* out of range, return maximum value. */
-                return (unsigned char) (0x7F ^ mask);
-        else {
-                aval = (unsigned char) seg << SEG_SHIFT;
-                if (seg < 2)
-                        aval |= (pcm_val >> 1) & QUANT_MASK;
-                else
-                        aval |= (pcm_val >> seg) & QUANT_MASK;
-                return (aval ^ mask);
-        }
+    PyInt16         mask;
+    short           seg;
+    unsigned char   aval;
+
+    /* The original sox code does this in the calling function, not here */
+    pcm_val = pcm_val >> 3;
+
+    /* A-law using even bit inversion */
+    if (pcm_val >= 0) {
+        mask = 0xD5;            /* sign (7th) bit = 1 */
+    } else {
+        mask = 0x55;            /* sign bit = 0 */
+        pcm_val = -pcm_val - 1;
+    }
+
+    /* Convert the scaled magnitude to segment number. */
+    seg = search(pcm_val, seg_aend, 8);
+
+    /* Combine the sign, segment, and quantization bits. */
+
+    if (seg >= 8)           /* out of range, return maximum value. */
+        return (unsigned char) (0x7F ^ mask);
+    else {
+        aval = (unsigned char) seg << SEG_SHIFT;
+        if (seg < 2)
+            aval |= (pcm_val >> 1) & QUANT_MASK;
+        else
+            aval |= (pcm_val >> seg) & QUANT_MASK;
+        return (aval ^ mask);
+    }
 }
 /* End of code taken from sox */
 
 /* Intel ADPCM step variation table */
 static int indexTable[16] = {
-        -1, -1, -1, -1, 2, 4, 6, 8,
-        -1, -1, -1, -1, 2, 4, 6, 8,
+    -1, -1, -1, -1, 2, 4, 6, 8,
+    -1, -1, -1, -1, 2, 4, 6, 8,
 };
 
 static int stepsizeTable[89] = {
-        7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
-        19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
-        50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
-        130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
-        337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
-        876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
-        2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
-        5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
-        15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
+    7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
+    19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
+    50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
+    130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
+    337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
+    876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
+    2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
+    5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+    15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
 };
-    
+
 #define CHARP(cp, i) ((signed char *)(cp+i))
 #define SHORTP(cp, i) ((short *)(cp+i))
 #define LONGP(cp, i) ((Py_Int32 *)(cp+i))
@@ -298,137 +298,137 @@
 static PyObject *
 audioop_getsample(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#ii:getsample", &cp, &len, &size, &i) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        if ( i < 0 || i >= len/size ) {
-                PyErr_SetString(AudioopError, "Index out of range");
-                return 0;
-        }
-        if ( size == 1 )      val = (int)*CHARP(cp, i);
-        else if ( size == 2 ) val = (int)*SHORTP(cp, i*2);
-        else if ( size == 4 ) val = (int)*LONGP(cp, i*4);
-        return PyLong_FromLong(val);
+    signed char *cp;
+    int len, size, val = 0;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#ii:getsample", &cp, &len, &size, &i) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    if ( i < 0 || i >= len/size ) {
+        PyErr_SetString(AudioopError, "Index out of range");
+        return 0;
+    }
+    if ( size == 1 )      val = (int)*CHARP(cp, i);
+    else if ( size == 2 ) val = (int)*SHORTP(cp, i*2);
+    else if ( size == 4 ) val = (int)*LONGP(cp, i*4);
+    return PyLong_FromLong(val);
 }
 
 static PyObject *
 audioop_max(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0;
-        int i;
-        int max = 0;
-
-        if ( !PyArg_ParseTuple(args, "s#i:max", &cp, &len, &size) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        for ( i=0; i<len; i+= size) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-                if ( val < 0 ) val = (-val);
-                if ( val > max ) max = val;
-        }
-        return PyLong_FromLong(max);
+    signed char *cp;
+    int len, size, val = 0;
+    int i;
+    int max = 0;
+
+    if ( !PyArg_ParseTuple(args, "s#i:max", &cp, &len, &size) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    for ( i=0; i<len; i+= size) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+        if ( val < 0 ) val = (-val);
+        if ( val > max ) max = val;
+    }
+    return PyLong_FromLong(max);
 }
 
 static PyObject *
 audioop_minmax(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0;
-        int i;
-        int min = 0x7fffffff, max = -0x7fffffff;
-
-        if (!PyArg_ParseTuple(args, "s#i:minmax", &cp, &len, &size))
-                return NULL;
-        if (size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return NULL;
-        }
-        for (i = 0; i < len; i += size) {
-                if (size == 1) val = (int) *CHARP(cp, i);
-                else if (size == 2) val = (int) *SHORTP(cp, i);
-                else if (size == 4) val = (int) *LONGP(cp, i);
-                if (val > max) max = val;
-                if (val < min) min = val;
-        }
-        return Py_BuildValue("(ii)", min, max);
+    signed char *cp;
+    int len, size, val = 0;
+    int i;
+    int min = 0x7fffffff, max = -0x7fffffff;
+
+    if (!PyArg_ParseTuple(args, "s#i:minmax", &cp, &len, &size))
+        return NULL;
+    if (size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return NULL;
+    }
+    for (i = 0; i < len; i += size) {
+        if (size == 1) val = (int) *CHARP(cp, i);
+        else if (size == 2) val = (int) *SHORTP(cp, i);
+        else if (size == 4) val = (int) *LONGP(cp, i);
+        if (val > max) max = val;
+        if (val < min) min = val;
+    }
+    return Py_BuildValue("(ii)", min, max);
 }
 
 static PyObject *
 audioop_avg(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0;
-        int i;
-        double avg = 0.0;
-
-        if ( !PyArg_ParseTuple(args, "s#i:avg", &cp, &len, &size) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        for ( i=0; i<len; i+= size) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-                avg += val;
-        }
-        if ( len == 0 )
-                val = 0;
-        else
-                val = (int)(avg / (double)(len/size));
-        return PyLong_FromLong(val);
+    signed char *cp;
+    int len, size, val = 0;
+    int i;
+    double avg = 0.0;
+
+    if ( !PyArg_ParseTuple(args, "s#i:avg", &cp, &len, &size) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    for ( i=0; i<len; i+= size) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+        avg += val;
+    }
+    if ( len == 0 )
+        val = 0;
+    else
+        val = (int)(avg / (double)(len/size));
+    return PyLong_FromLong(val);
 }
 
 static PyObject *
 audioop_rms(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0;
-        int i;
-        double sum_squares = 0.0;
-
-        if ( !PyArg_ParseTuple(args, "s#i:rms", &cp, &len, &size) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        for ( i=0; i<len; i+= size) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-                sum_squares += (double)val*(double)val;
-        }
-        if ( len == 0 )
-                val = 0;
-        else
-                val = (int)sqrt(sum_squares / (double)(len/size));
-        return PyLong_FromLong(val);
+    signed char *cp;
+    int len, size, val = 0;
+    int i;
+    double sum_squares = 0.0;
+
+    if ( !PyArg_ParseTuple(args, "s#i:rms", &cp, &len, &size) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    for ( i=0; i<len; i+= size) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+        sum_squares += (double)val*(double)val;
+    }
+    if ( len == 0 )
+        val = 0;
+    else
+        val = (int)sqrt(sum_squares / (double)(len/size));
+    return PyLong_FromLong(val);
 }
 
 static double _sum2(short *a, short *b, int len)
 {
-        int i;
-        double sum = 0.0;
+    int i;
+    double sum = 0.0;
 
-        for( i=0; i<len; i++) {
-                sum = sum + (double)a[i]*(double)b[i];
-        }
-        return sum;
+    for( i=0; i<len; i++) {
+        sum = sum + (double)a[i]*(double)b[i];
+    }
+    return sum;
 }
 
 /*
@@ -466,60 +466,60 @@
 static PyObject *
 audioop_findfit(PyObject *self, PyObject *args)
 {
-        short *cp1, *cp2;
-        int len1, len2;
-        int j, best_j;
-        double aj_m1, aj_lm1;
-        double sum_ri_2, sum_aij_2, sum_aij_ri, result, best_result, factor;
-
-	/* Passing a short** for an 's' argument is correct only
-	   if the string contents is aligned for interpretation
-	   as short[]. Due to the definition of PyBytesObject,
-	   this is currently (Python 2.6) the case. */
-        if ( !PyArg_ParseTuple(args, "s#s#:findfit",
-	                       (char**)&cp1, &len1, (char**)&cp2, &len2) )
-                return 0;
-        if ( len1 & 1 || len2 & 1 ) {
-                PyErr_SetString(AudioopError, "Strings should be even-sized");
-                return 0;
-        }
-        len1 >>= 1;
-        len2 >>= 1;
-    
-        if ( len1 < len2 ) {
-                PyErr_SetString(AudioopError, "First sample should be longer");
-                return 0;
-        }
-        sum_ri_2 = _sum2(cp2, cp2, len2);
-        sum_aij_2 = _sum2(cp1, cp1, len2);
-        sum_aij_ri = _sum2(cp1, cp2, len2);
-
-        result = (sum_ri_2*sum_aij_2 - sum_aij_ri*sum_aij_ri) / sum_aij_2;
-
-        best_result = result;
-        best_j = 0;
-        j = 0;
-
-        for ( j=1; j<=len1-len2; j++) {
-                aj_m1 = (double)cp1[j-1];
-                aj_lm1 = (double)cp1[j+len2-1];
-
-                sum_aij_2 = sum_aij_2 + aj_lm1*aj_lm1 - aj_m1*aj_m1;
-                sum_aij_ri = _sum2(cp1+j, cp2, len2);
-
-                result = (sum_ri_2*sum_aij_2 - sum_aij_ri*sum_aij_ri)
-                        / sum_aij_2;
-
-                if ( result < best_result ) {
-                        best_result = result;
-                        best_j = j;
-                }
-        
+    short *cp1, *cp2;
+    int len1, len2;
+    int j, best_j;
+    double aj_m1, aj_lm1;
+    double sum_ri_2, sum_aij_2, sum_aij_ri, result, best_result, factor;
+
+    /* Passing a short** for an 's' argument is correct only
+       if the string contents is aligned for interpretation
+       as short[]. Due to the definition of PyBytesObject,
+       this is currently (Python 2.6) the case. */
+    if ( !PyArg_ParseTuple(args, "s#s#:findfit",
+                           (char**)&cp1, &len1, (char**)&cp2, &len2) )
+        return 0;
+    if ( len1 & 1 || len2 & 1 ) {
+        PyErr_SetString(AudioopError, "Strings should be even-sized");
+        return 0;
+    }
+    len1 >>= 1;
+    len2 >>= 1;
+
+    if ( len1 < len2 ) {
+        PyErr_SetString(AudioopError, "First sample should be longer");
+        return 0;
+    }
+    sum_ri_2 = _sum2(cp2, cp2, len2);
+    sum_aij_2 = _sum2(cp1, cp1, len2);
+    sum_aij_ri = _sum2(cp1, cp2, len2);
+
+    result = (sum_ri_2*sum_aij_2 - sum_aij_ri*sum_aij_ri) / sum_aij_2;
+
+    best_result = result;
+    best_j = 0;
+    j = 0;
+
+    for ( j=1; j<=len1-len2; j++) {
+        aj_m1 = (double)cp1[j-1];
+        aj_lm1 = (double)cp1[j+len2-1];
+
+        sum_aij_2 = sum_aij_2 + aj_lm1*aj_lm1 - aj_m1*aj_m1;
+        sum_aij_ri = _sum2(cp1+j, cp2, len2);
+
+        result = (sum_ri_2*sum_aij_2 - sum_aij_ri*sum_aij_ri)
+            / sum_aij_2;
+
+        if ( result < best_result ) {
+            best_result = result;
+            best_j = j;
         }
 
-        factor = _sum2(cp1+best_j, cp2, len2) / sum_ri_2;
-    
-        return Py_BuildValue("(if)", best_j, factor);
+    }
+
+    factor = _sum2(cp1+best_j, cp2, len2) / sum_ri_2;
+
+    return Py_BuildValue("(if)", best_j, factor);
 }
 
 /*
@@ -529,28 +529,28 @@
 static PyObject *
 audioop_findfactor(PyObject *self, PyObject *args)
 {
-        short *cp1, *cp2;
-        int len1, len2;
-        double sum_ri_2, sum_aij_ri, result;
-
-        if ( !PyArg_ParseTuple(args, "s#s#:findfactor",
-	                       (char**)&cp1, &len1, (char**)&cp2, &len2) )
-                return 0;
-        if ( len1 & 1 || len2 & 1 ) {
-                PyErr_SetString(AudioopError, "Strings should be even-sized");
-                return 0;
-        }
-        if ( len1 != len2 ) {
-                PyErr_SetString(AudioopError, "Samples should be same size");
-                return 0;
-        }
-        len2 >>= 1;
-        sum_ri_2 = _sum2(cp2, cp2, len2);
-        sum_aij_ri = _sum2(cp1, cp2, len2);
+    short *cp1, *cp2;
+    int len1, len2;
+    double sum_ri_2, sum_aij_ri, result;
+
+    if ( !PyArg_ParseTuple(args, "s#s#:findfactor",
+                           (char**)&cp1, &len1, (char**)&cp2, &len2) )
+        return 0;
+    if ( len1 & 1 || len2 & 1 ) {
+        PyErr_SetString(AudioopError, "Strings should be even-sized");
+        return 0;
+    }
+    if ( len1 != len2 ) {
+        PyErr_SetString(AudioopError, "Samples should be same size");
+        return 0;
+    }
+    len2 >>= 1;
+    sum_ri_2 = _sum2(cp2, cp2, len2);
+    sum_aij_ri = _sum2(cp1, cp2, len2);
 
-        result = sum_aij_ri / sum_ri_2;
+    result = sum_aij_ri / sum_ri_2;
 
-        return PyFloat_FromDouble(result);
+    return PyFloat_FromDouble(result);
 }
 
 /*
@@ -560,1114 +560,1114 @@
 static PyObject *
 audioop_findmax(PyObject *self, PyObject *args)
 {
-        short *cp1;
-        int len1, len2;
-        int j, best_j;
-        double aj_m1, aj_lm1;
-        double result, best_result;
-
-        if ( !PyArg_ParseTuple(args, "s#i:findmax", 
-			       (char**)&cp1, &len1, &len2) )
-                return 0;
-        if ( len1 & 1 ) {
-                PyErr_SetString(AudioopError, "Strings should be even-sized");
-                return 0;
+    short *cp1;
+    int len1, len2;
+    int j, best_j;
+    double aj_m1, aj_lm1;
+    double result, best_result;
+
+    if ( !PyArg_ParseTuple(args, "s#i:findmax",
+                           (char**)&cp1, &len1, &len2) )
+        return 0;
+    if ( len1 & 1 ) {
+        PyErr_SetString(AudioopError, "Strings should be even-sized");
+        return 0;
+    }
+    len1 >>= 1;
+
+    if ( len2 < 0 || len1 < len2 ) {
+        PyErr_SetString(AudioopError, "Input sample should be longer");
+        return 0;
+    }
+
+    result = _sum2(cp1, cp1, len2);
+
+    best_result = result;
+    best_j = 0;
+    j = 0;
+
+    for ( j=1; j<=len1-len2; j++) {
+        aj_m1 = (double)cp1[j-1];
+        aj_lm1 = (double)cp1[j+len2-1];
+
+        result = result + aj_lm1*aj_lm1 - aj_m1*aj_m1;
+
+        if ( result > best_result ) {
+            best_result = result;
+            best_j = j;
         }
-        len1 >>= 1;
-    
-        if ( len2 < 0 || len1 < len2 ) {
-                PyErr_SetString(AudioopError, "Input sample should be longer");
-                return 0;
-        }
-
-        result = _sum2(cp1, cp1, len2);
 
-        best_result = result;
-        best_j = 0;
-        j = 0;
-
-        for ( j=1; j<=len1-len2; j++) {
-                aj_m1 = (double)cp1[j-1];
-                aj_lm1 = (double)cp1[j+len2-1];
-
-                result = result + aj_lm1*aj_lm1 - aj_m1*aj_m1;
-
-                if ( result > best_result ) {
-                        best_result = result;
-                        best_j = j;
-                }
-        
-        }
+    }
 
-        return PyLong_FromLong(best_j);
+    return PyLong_FromLong(best_j);
 }
 
 static PyObject *
 audioop_avgpp(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0, prevval = 0, prevextremevalid = 0,
-                prevextreme = 0;
-        int i;
-        double avg = 0.0;
-        int diff, prevdiff, extremediff, nextreme = 0;
-
-        if ( !PyArg_ParseTuple(args, "s#i:avgpp", &cp, &len, &size) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        /* Compute first delta value ahead. Also automatically makes us
-        ** skip the first extreme value
-        */
-        if ( size == 1 )      prevval = (int)*CHARP(cp, 0);
-        else if ( size == 2 ) prevval = (int)*SHORTP(cp, 0);
-        else if ( size == 4 ) prevval = (int)*LONGP(cp, 0);
-        if ( size == 1 )      val = (int)*CHARP(cp, size);
-        else if ( size == 2 ) val = (int)*SHORTP(cp, size);
-        else if ( size == 4 ) val = (int)*LONGP(cp, size);
-        prevdiff = val - prevval;
-    
-        for ( i=size; i<len; i+= size) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-                diff = val - prevval;
-                if ( diff*prevdiff < 0 ) {
-                        /* Derivative changed sign. Compute difference to last
-                        ** extreme value and remember.
-                        */
-                        if ( prevextremevalid ) {
-                                extremediff = prevval - prevextreme;
-                                if ( extremediff < 0 )
-                                        extremediff = -extremediff;
-                                avg += extremediff;
-                                nextreme++;
-                        }
-                        prevextremevalid = 1;
-                        prevextreme = prevval;
-                }
-                prevval = val;
-                if ( diff != 0 )
-                        prevdiff = diff;        
-        }
-        if ( nextreme == 0 )
-                val = 0;
-        else
-                val = (int)(avg / (double)nextreme);
-        return PyLong_FromLong(val);
+    signed char *cp;
+    int len, size, val = 0, prevval = 0, prevextremevalid = 0,
+        prevextreme = 0;
+    int i;
+    double avg = 0.0;
+    int diff, prevdiff, extremediff, nextreme = 0;
+
+    if ( !PyArg_ParseTuple(args, "s#i:avgpp", &cp, &len, &size) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    /* Compute first delta value ahead. Also automatically makes us
+    ** skip the first extreme value
+    */
+    if ( size == 1 )      prevval = (int)*CHARP(cp, 0);
+    else if ( size == 2 ) prevval = (int)*SHORTP(cp, 0);
+    else if ( size == 4 ) prevval = (int)*LONGP(cp, 0);
+    if ( size == 1 )      val = (int)*CHARP(cp, size);
+    else if ( size == 2 ) val = (int)*SHORTP(cp, size);
+    else if ( size == 4 ) val = (int)*LONGP(cp, size);
+    prevdiff = val - prevval;
+
+    for ( i=size; i<len; i+= size) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+        diff = val - prevval;
+        if ( diff*prevdiff < 0 ) {
+            /* Derivative changed sign. Compute difference to last
+            ** extreme value and remember.
+            */
+            if ( prevextremevalid ) {
+                extremediff = prevval - prevextreme;
+                if ( extremediff < 0 )
+                    extremediff = -extremediff;
+                avg += extremediff;
+                nextreme++;
+            }
+            prevextremevalid = 1;
+            prevextreme = prevval;
+        }
+        prevval = val;
+        if ( diff != 0 )
+            prevdiff = diff;
+    }
+    if ( nextreme == 0 )
+        val = 0;
+    else
+        val = (int)(avg / (double)nextreme);
+    return PyLong_FromLong(val);
 }
 
 static PyObject *
 audioop_maxpp(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0, prevval = 0, prevextremevalid = 0,
-                prevextreme = 0;
-        int i;
-        int max = 0;
-        int diff, prevdiff, extremediff;
-
-        if ( !PyArg_ParseTuple(args, "s#i:maxpp", &cp, &len, &size) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        /* Compute first delta value ahead. Also automatically makes us
-        ** skip the first extreme value
-        */
-        if ( size == 1 )      prevval = (int)*CHARP(cp, 0);
-        else if ( size == 2 ) prevval = (int)*SHORTP(cp, 0);
-        else if ( size == 4 ) prevval = (int)*LONGP(cp, 0);
-        if ( size == 1 )      val = (int)*CHARP(cp, size);
-        else if ( size == 2 ) val = (int)*SHORTP(cp, size);
-        else if ( size == 4 ) val = (int)*LONGP(cp, size);
-        prevdiff = val - prevval;
-
-        for ( i=size; i<len; i+= size) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-                diff = val - prevval;
-                if ( diff*prevdiff < 0 ) {
-                        /* Derivative changed sign. Compute difference to
-                        ** last extreme value and remember.
-                        */
-                        if ( prevextremevalid ) {
-                                extremediff = prevval - prevextreme;
-                                if ( extremediff < 0 )
-                                        extremediff = -extremediff;
-                                if ( extremediff > max )
-                                        max = extremediff;
-                        }
-                        prevextremevalid = 1;
-                        prevextreme = prevval;
-                }
-                prevval = val;
-                if ( diff != 0 )
-                        prevdiff = diff;
-        }
-        return PyLong_FromLong(max);
+    signed char *cp;
+    int len, size, val = 0, prevval = 0, prevextremevalid = 0,
+        prevextreme = 0;
+    int i;
+    int max = 0;
+    int diff, prevdiff, extremediff;
+
+    if ( !PyArg_ParseTuple(args, "s#i:maxpp", &cp, &len, &size) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    /* Compute first delta value ahead. Also automatically makes us
+    ** skip the first extreme value
+    */
+    if ( size == 1 )      prevval = (int)*CHARP(cp, 0);
+    else if ( size == 2 ) prevval = (int)*SHORTP(cp, 0);
+    else if ( size == 4 ) prevval = (int)*LONGP(cp, 0);
+    if ( size == 1 )      val = (int)*CHARP(cp, size);
+    else if ( size == 2 ) val = (int)*SHORTP(cp, size);
+    else if ( size == 4 ) val = (int)*LONGP(cp, size);
+    prevdiff = val - prevval;
+
+    for ( i=size; i<len; i+= size) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+        diff = val - prevval;
+        if ( diff*prevdiff < 0 ) {
+            /* Derivative changed sign. Compute difference to
+            ** last extreme value and remember.
+            */
+            if ( prevextremevalid ) {
+                extremediff = prevval - prevextreme;
+                if ( extremediff < 0 )
+                    extremediff = -extremediff;
+                if ( extremediff > max )
+                    max = extremediff;
+            }
+            prevextremevalid = 1;
+            prevextreme = prevval;
+        }
+        prevval = val;
+        if ( diff != 0 )
+            prevdiff = diff;
+    }
+    return PyLong_FromLong(max);
 }
 
 static PyObject *
 audioop_cross(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        int len, size, val = 0;
-        int i;
-        int prevval, ncross;
-
-        if ( !PyArg_ParseTuple(args, "s#i:cross", &cp, &len, &size) )
-                return 0;
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-        ncross = -1;
-        prevval = 17; /* Anything <> 0,1 */
-        for ( i=0; i<len; i+= size) {
-                if ( size == 1 )      val = ((int)*CHARP(cp, i)) >> 7;
-                else if ( size == 2 ) val = ((int)*SHORTP(cp, i)) >> 15;
-                else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 31;
-                val = val & 1;
-                if ( val != prevval ) ncross++;
-                prevval = val;
-        }
-        return PyLong_FromLong(ncross);
+    signed char *cp;
+    int len, size, val = 0;
+    int i;
+    int prevval, ncross;
+
+    if ( !PyArg_ParseTuple(args, "s#i:cross", &cp, &len, &size) )
+        return 0;
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+    ncross = -1;
+    prevval = 17; /* Anything <> 0,1 */
+    for ( i=0; i<len; i+= size) {
+        if ( size == 1 )      val = ((int)*CHARP(cp, i)) >> 7;
+        else if ( size == 2 ) val = ((int)*SHORTP(cp, i)) >> 15;
+        else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 31;
+        val = val & 1;
+        if ( val != prevval ) ncross++;
+        prevval = val;
+    }
+    return PyLong_FromLong(ncross);
 }
 
 static PyObject *
 audioop_mul(PyObject *self, PyObject *args)
 {
-        signed char *cp, *ncp;
-        int len, size, val = 0;
-        double factor, fval, maxval;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#id:mul", &cp, &len, &size, &factor ) )
-                return 0;
-    
-        if ( size == 1 ) maxval = (double) 0x7f;
-        else if ( size == 2 ) maxval = (double) 0x7fff;
-        else if ( size == 4 ) maxval = (double) 0x7fffffff;
-        else {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        rv = PyBytes_FromStringAndSize(NULL, len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-    
-    
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-                fval = (double)val*factor;
-                if ( fval > maxval ) fval = maxval;
-                else if ( fval < -maxval ) fval = -maxval;
-                val = (int)fval;
-                if ( size == 1 )      *CHARP(ncp, i) = (signed char)val;
-                else if ( size == 2 ) *SHORTP(ncp, i) = (short)val;
-                else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)val;
-        }
-        return rv;
+    signed char *cp, *ncp;
+    int len, size, val = 0;
+    double factor, fval, maxval;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#id:mul", &cp, &len, &size, &factor ) )
+        return 0;
+
+    if ( size == 1 ) maxval = (double) 0x7f;
+    else if ( size == 2 ) maxval = (double) 0x7fff;
+    else if ( size == 4 ) maxval = (double) 0x7fffffff;
+    else {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
+
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+        fval = (double)val*factor;
+        if ( fval > maxval ) fval = maxval;
+        else if ( fval < -maxval ) fval = -maxval;
+        val = (int)fval;
+        if ( size == 1 )      *CHARP(ncp, i) = (signed char)val;
+        else if ( size == 2 ) *SHORTP(ncp, i) = (short)val;
+        else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)val;
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_tomono(PyObject *self, PyObject *args)
 {
-	Py_buffer pcp;
-        signed char *cp, *ncp;
-        int len, size, val1 = 0, val2 = 0;
-        double fac1, fac2, fval, maxval;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s*idd:tomono",
-	                       &pcp, &size, &fac1, &fac2 ) )
-                return 0;
-	cp = pcp.buf;
-	len = pcp.len;
-    
-        if ( size == 1 ) maxval = (double) 0x7f;
-        else if ( size == 2 ) maxval = (double) 0x7fff;
-        else if ( size == 4 ) maxval = (double) 0x7fffffff;
-        else {
-		PyBuffer_Release(&pcp);
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        rv = PyBytes_FromStringAndSize(NULL, len/2);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-    
-    
-        for ( i=0; i < len; i += size*2 ) {
-                if ( size == 1 )      val1 = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val1 = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val1 = (int)*LONGP(cp, i);
-                if ( size == 1 )      val2 = (int)*CHARP(cp, i+1);
-                else if ( size == 2 ) val2 = (int)*SHORTP(cp, i+2);
-                else if ( size == 4 ) val2 = (int)*LONGP(cp, i+4);
-                fval = (double)val1*fac1 + (double)val2*fac2;
-                if ( fval > maxval ) fval = maxval;
-                else if ( fval < -maxval ) fval = -maxval;
-                val1 = (int)fval;
-                if ( size == 1 )      *CHARP(ncp, i/2) = (signed char)val1;
-                else if ( size == 2 ) *SHORTP(ncp, i/2) = (short)val1;
-                else if ( size == 4 ) *LONGP(ncp, i/2)= (Py_Int32)val1;
-        }
-	PyBuffer_Release(&pcp);
-        return rv;
+    Py_buffer pcp;
+    signed char *cp, *ncp;
+    int len, size, val1 = 0, val2 = 0;
+    double fac1, fac2, fval, maxval;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s*idd:tomono",
+                           &pcp, &size, &fac1, &fac2 ) )
+        return 0;
+    cp = pcp.buf;
+    len = pcp.len;
+
+    if ( size == 1 ) maxval = (double) 0x7f;
+    else if ( size == 2 ) maxval = (double) 0x7fff;
+    else if ( size == 4 ) maxval = (double) 0x7fffffff;
+    else {
+        PyBuffer_Release(&pcp);
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len/2);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
+
+
+    for ( i=0; i < len; i += size*2 ) {
+        if ( size == 1 )      val1 = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val1 = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val1 = (int)*LONGP(cp, i);
+        if ( size == 1 )      val2 = (int)*CHARP(cp, i+1);
+        else if ( size == 2 ) val2 = (int)*SHORTP(cp, i+2);
+        else if ( size == 4 ) val2 = (int)*LONGP(cp, i+4);
+        fval = (double)val1*fac1 + (double)val2*fac2;
+        if ( fval > maxval ) fval = maxval;
+        else if ( fval < -maxval ) fval = -maxval;
+        val1 = (int)fval;
+        if ( size == 1 )      *CHARP(ncp, i/2) = (signed char)val1;
+        else if ( size == 2 ) *SHORTP(ncp, i/2) = (short)val1;
+        else if ( size == 4 ) *LONGP(ncp, i/2)= (Py_Int32)val1;
+    }
+    PyBuffer_Release(&pcp);
+    return rv;
 }
 
 static PyObject *
 audioop_tostereo(PyObject *self, PyObject *args)
 {
-        signed char *cp, *ncp;
-        int len, new_len, size, val1, val2, val = 0;
-        double fac1, fac2, fval, maxval;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#idd:tostereo",
-	                       &cp, &len, &size, &fac1, &fac2 ) )
-                return 0;
-    
-        if ( size == 1 ) maxval = (double) 0x7f;
-        else if ( size == 2 ) maxval = (double) 0x7fff;
-        else if ( size == 4 ) maxval = (double) 0x7fffffff;
-        else {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        new_len = len*2;
-        if (new_len < 0) {
-                PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                return 0;
-        }
+    signed char *cp, *ncp;
+    int len, new_len, size, val1, val2, val = 0;
+    double fac1, fac2, fval, maxval;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#idd:tostereo",
+                           &cp, &len, &size, &fac1, &fac2 ) )
+        return 0;
+
+    if ( size == 1 ) maxval = (double) 0x7f;
+    else if ( size == 2 ) maxval = (double) 0x7fff;
+    else if ( size == 4 ) maxval = (double) 0x7fffffff;
+    else {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    new_len = len*2;
+    if (new_len < 0) {
+        PyErr_SetString(PyExc_MemoryError,
+                        "not enough memory for output buffer");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, new_len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
 
-        rv = PyBytes_FromStringAndSize(NULL, new_len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-    
-    
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-
-                fval = (double)val*fac1;
-                if ( fval > maxval ) fval = maxval;
-                else if ( fval < -maxval ) fval = -maxval;
-                val1 = (int)fval;
-
-                fval = (double)val*fac2;
-                if ( fval > maxval ) fval = maxval;
-                else if ( fval < -maxval ) fval = -maxval;
-                val2 = (int)fval;
-
-                if ( size == 1 )      *CHARP(ncp, i*2) = (signed char)val1;
-                else if ( size == 2 ) *SHORTP(ncp, i*2) = (short)val1;
-                else if ( size == 4 ) *LONGP(ncp, i*2) = (Py_Int32)val1;
-
-                if ( size == 1 )      *CHARP(ncp, i*2+1) = (signed char)val2;
-                else if ( size == 2 ) *SHORTP(ncp, i*2+2) = (short)val2;
-                else if ( size == 4 ) *LONGP(ncp, i*2+4) = (Py_Int32)val2;
-        }
-        return rv;
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+
+        fval = (double)val*fac1;
+        if ( fval > maxval ) fval = maxval;
+        else if ( fval < -maxval ) fval = -maxval;
+        val1 = (int)fval;
+
+        fval = (double)val*fac2;
+        if ( fval > maxval ) fval = maxval;
+        else if ( fval < -maxval ) fval = -maxval;
+        val2 = (int)fval;
+
+        if ( size == 1 )      *CHARP(ncp, i*2) = (signed char)val1;
+        else if ( size == 2 ) *SHORTP(ncp, i*2) = (short)val1;
+        else if ( size == 4 ) *LONGP(ncp, i*2) = (Py_Int32)val1;
+
+        if ( size == 1 )      *CHARP(ncp, i*2+1) = (signed char)val2;
+        else if ( size == 2 ) *SHORTP(ncp, i*2+2) = (short)val2;
+        else if ( size == 4 ) *LONGP(ncp, i*2+4) = (Py_Int32)val2;
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_add(PyObject *self, PyObject *args)
 {
-        signed char *cp1, *cp2, *ncp;
-        int len1, len2, size, val1 = 0, val2 = 0, maxval, newval;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#s#i:add",
-                          &cp1, &len1, &cp2, &len2, &size ) )
-                return 0;
-
-        if ( len1 != len2 ) {
-                PyErr_SetString(AudioopError, "Lengths should be the same");
-                return 0;
-        }
-    
-        if ( size == 1 ) maxval = 0x7f;
-        else if ( size == 2 ) maxval = 0x7fff;
-        else if ( size == 4 ) maxval = 0x7fffffff;
-        else {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-
-        rv = PyBytes_FromStringAndSize(NULL, len1);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-
-        for ( i=0; i < len1; i += size ) {
-                if ( size == 1 )      val1 = (int)*CHARP(cp1, i);
-                else if ( size == 2 ) val1 = (int)*SHORTP(cp1, i);
-                else if ( size == 4 ) val1 = (int)*LONGP(cp1, i);
-        
-                if ( size == 1 )      val2 = (int)*CHARP(cp2, i);
-                else if ( size == 2 ) val2 = (int)*SHORTP(cp2, i);
-                else if ( size == 4 ) val2 = (int)*LONGP(cp2, i);
-
-                newval = val1 + val2;
-                /* truncate in case of overflow */
-                if (newval > maxval) newval = maxval;
-                else if (newval < -maxval) newval = -maxval;
-                else if (size == 4 && (newval^val1) < 0 && (newval^val2) < 0)
-                        newval = val1 > 0 ? maxval : - maxval;
-
-                if ( size == 1 )      *CHARP(ncp, i) = (signed char)newval;
-                else if ( size == 2 ) *SHORTP(ncp, i) = (short)newval;
-                else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)newval;
-        }
-        return rv;
+    signed char *cp1, *cp2, *ncp;
+    int len1, len2, size, val1 = 0, val2 = 0, maxval, newval;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#s#i:add",
+                      &cp1, &len1, &cp2, &len2, &size ) )
+        return 0;
+
+    if ( len1 != len2 ) {
+        PyErr_SetString(AudioopError, "Lengths should be the same");
+        return 0;
+    }
+
+    if ( size == 1 ) maxval = 0x7f;
+    else if ( size == 2 ) maxval = 0x7fff;
+    else if ( size == 4 ) maxval = 0x7fffffff;
+    else {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len1);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
+
+    for ( i=0; i < len1; i += size ) {
+        if ( size == 1 )      val1 = (int)*CHARP(cp1, i);
+        else if ( size == 2 ) val1 = (int)*SHORTP(cp1, i);
+        else if ( size == 4 ) val1 = (int)*LONGP(cp1, i);
+
+        if ( size == 1 )      val2 = (int)*CHARP(cp2, i);
+        else if ( size == 2 ) val2 = (int)*SHORTP(cp2, i);
+        else if ( size == 4 ) val2 = (int)*LONGP(cp2, i);
+
+        newval = val1 + val2;
+        /* truncate in case of overflow */
+        if (newval > maxval) newval = maxval;
+        else if (newval < -maxval) newval = -maxval;
+        else if (size == 4 && (newval^val1) < 0 && (newval^val2) < 0)
+            newval = val1 > 0 ? maxval : - maxval;
+
+        if ( size == 1 )      *CHARP(ncp, i) = (signed char)newval;
+        else if ( size == 2 ) *SHORTP(ncp, i) = (short)newval;
+        else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)newval;
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_bias(PyObject *self, PyObject *args)
 {
-        signed char *cp, *ncp;
-        int len, size, val = 0;
-        PyObject *rv;
-        int i;
-        int bias;
-
-        if ( !PyArg_ParseTuple(args, "s#ii:bias",
-                          &cp, &len, &size , &bias) )
-                return 0;
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        rv = PyBytes_FromStringAndSize(NULL, len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-    
-    
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = (int)*CHARP(cp, i);
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = (int)*LONGP(cp, i);
-        
-                if ( size == 1 )      *CHARP(ncp, i) = (signed char)(val+bias);
-                else if ( size == 2 ) *SHORTP(ncp, i) = (short)(val+bias);
-                else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(val+bias);
-        }
-        return rv;
+    signed char *cp, *ncp;
+    int len, size, val = 0;
+    PyObject *rv;
+    int i;
+    int bias;
+
+    if ( !PyArg_ParseTuple(args, "s#ii:bias",
+                      &cp, &len, &size , &bias) )
+        return 0;
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
+
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = (int)*CHARP(cp, i);
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = (int)*LONGP(cp, i);
+
+        if ( size == 1 )      *CHARP(ncp, i) = (signed char)(val+bias);
+        else if ( size == 2 ) *SHORTP(ncp, i) = (short)(val+bias);
+        else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(val+bias);
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_reverse(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        unsigned char *ncp;
-        int len, size, val = 0;
-        PyObject *rv;
-        int i, j;
-
-        if ( !PyArg_ParseTuple(args, "s#i:reverse",
-                          &cp, &len, &size) )
-                return 0;
-
-        if ( size != 1 && size != 2 && size != 4 ) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        rv = PyBytes_FromStringAndSize(NULL, len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (unsigned char *)PyBytes_AsString(rv);
-    
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
-
-                j = len - i - size;
-        
-                if ( size == 1 )      *CHARP(ncp, j) = (signed char)(val >> 8);
-                else if ( size == 2 ) *SHORTP(ncp, j) = (short)(val);
-                else if ( size == 4 ) *LONGP(ncp, j) = (Py_Int32)(val<<16);
-        }
-        return rv;
+    signed char *cp;
+    unsigned char *ncp;
+    int len, size, val = 0;
+    PyObject *rv;
+    int i, j;
+
+    if ( !PyArg_ParseTuple(args, "s#i:reverse",
+                      &cp, &len, &size) )
+        return 0;
+
+    if ( size != 1 && size != 2 && size != 4 ) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (unsigned char *)PyBytes_AsString(rv);
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
+
+        j = len - i - size;
+
+        if ( size == 1 )      *CHARP(ncp, j) = (signed char)(val >> 8);
+        else if ( size == 2 ) *SHORTP(ncp, j) = (short)(val);
+        else if ( size == 4 ) *LONGP(ncp, j) = (Py_Int32)(val<<16);
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_lin2lin(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        unsigned char *ncp;
-        int len, new_len, size, size2, val = 0;
-        PyObject *rv;
-        int i, j;
-
-        if ( !PyArg_ParseTuple(args, "s#ii:lin2lin",
-                          &cp, &len, &size, &size2) )
-                return 0;
-
-        if ( (size != 1 && size != 2 && size != 4) ||
-             (size2 != 1 && size2 != 2 && size2 != 4)) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        new_len = (len/size)*size2;
-        if (new_len < 0) {
-                PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                return 0;
-        }
-        rv = PyBytes_FromStringAndSize(NULL, new_len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (unsigned char *)PyBytes_AsString(rv);
-    
-        for ( i=0, j=0; i < len; i += size, j += size2 ) {
-                if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
-
-                if ( size2 == 1 )  *CHARP(ncp, j) = (signed char)(val >> 8);
-                else if ( size2 == 2 ) *SHORTP(ncp, j) = (short)(val);
-                else if ( size2 == 4 ) *LONGP(ncp, j) = (Py_Int32)(val<<16);
-        }
-        return rv;
+    signed char *cp;
+    unsigned char *ncp;
+    int len, new_len, size, size2, val = 0;
+    PyObject *rv;
+    int i, j;
+
+    if ( !PyArg_ParseTuple(args, "s#ii:lin2lin",
+                      &cp, &len, &size, &size2) )
+        return 0;
+
+    if ( (size != 1 && size != 2 && size != 4) ||
+         (size2 != 1 && size2 != 2 && size2 != 4)) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    new_len = (len/size)*size2;
+    if (new_len < 0) {
+        PyErr_SetString(PyExc_MemoryError,
+                        "not enough memory for output buffer");
+        return 0;
+    }
+    rv = PyBytes_FromStringAndSize(NULL, new_len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (unsigned char *)PyBytes_AsString(rv);
+
+    for ( i=0, j=0; i < len; i += size, j += size2 ) {
+        if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
+
+        if ( size2 == 1 )  *CHARP(ncp, j) = (signed char)(val >> 8);
+        else if ( size2 == 2 ) *SHORTP(ncp, j) = (short)(val);
+        else if ( size2 == 4 ) *LONGP(ncp, j) = (Py_Int32)(val<<16);
+    }
+    return rv;
 }
 
 static int
 gcd(int a, int b)
 {
-        while (b > 0) {
-                int tmp = a % b;
-                a = b;
-                b = tmp;
-        }
-        return a;
+    while (b > 0) {
+        int tmp = a % b;
+        a = b;
+        b = tmp;
+    }
+    return a;
 }
 
 static PyObject *
 audioop_ratecv(PyObject *self, PyObject *args)
 {
-        char *cp, *ncp;
-        int len, size, nchannels, inrate, outrate, weightA, weightB;
-        int chan, d, *prev_i, *cur_i, cur_o;
-        PyObject *state, *samps, *str, *rv = NULL;
-        int bytes_per_frame;
-        size_t alloc_size;
-
-        weightA = 1;
-        weightB = 0;
-        if (!PyArg_ParseTuple(args, "s#iiiiO|ii:ratecv", &cp, &len, &size,
-	                      &nchannels, &inrate, &outrate, &state,
-			      &weightA, &weightB))
-                return NULL;
-        if (size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return NULL;
-        }
-        if (nchannels < 1) {
-                PyErr_SetString(AudioopError, "# of channels should be >= 1");
-                return NULL;
-        }
-        bytes_per_frame = size * nchannels;
-        if (bytes_per_frame / nchannels != size) {
-                /* This overflow test is rigorously correct because
-                   both multiplicands are >= 1.  Use the argument names
-                   from the docs for the error msg. */
-                PyErr_SetString(PyExc_OverflowError,
-                                "width * nchannels too big for a C int");
-                return NULL;
-        }
-        if (weightA < 1 || weightB < 0) {
-                PyErr_SetString(AudioopError,
-                        "weightA should be >= 1, weightB should be >= 0");
-                return NULL;
-        }
-        if (len % bytes_per_frame != 0) {
-                PyErr_SetString(AudioopError, "not a whole number of frames");
-                return NULL;
-        }
-        if (inrate <= 0 || outrate <= 0) {
-                PyErr_SetString(AudioopError, "sampling rate not > 0");
-                return NULL;
-        }
-        /* divide inrate and outrate by their greatest common divisor */
-        d = gcd(inrate, outrate);
-        inrate /= d;
-        outrate /= d;
-
-        alloc_size = sizeof(int) * (unsigned)nchannels;
-        if (alloc_size < (unsigned)nchannels) {
-                PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                return 0;
-        }
-        prev_i = (int *) malloc(alloc_size);
-        cur_i = (int *) malloc(alloc_size);
-        if (prev_i == NULL || cur_i == NULL) {
-                (void) PyErr_NoMemory();
+    char *cp, *ncp;
+    int len, size, nchannels, inrate, outrate, weightA, weightB;
+    int chan, d, *prev_i, *cur_i, cur_o;
+    PyObject *state, *samps, *str, *rv = NULL;
+    int bytes_per_frame;
+    size_t alloc_size;
+
+    weightA = 1;
+    weightB = 0;
+    if (!PyArg_ParseTuple(args, "s#iiiiO|ii:ratecv", &cp, &len, &size,
+                          &nchannels, &inrate, &outrate, &state,
+                          &weightA, &weightB))
+        return NULL;
+    if (size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return NULL;
+    }
+    if (nchannels < 1) {
+        PyErr_SetString(AudioopError, "# of channels should be >= 1");
+        return NULL;
+    }
+    bytes_per_frame = size * nchannels;
+    if (bytes_per_frame / nchannels != size) {
+        /* This overflow test is rigorously correct because
+           both multiplicands are >= 1.  Use the argument names
+           from the docs for the error msg. */
+        PyErr_SetString(PyExc_OverflowError,
+                        "width * nchannels too big for a C int");
+        return NULL;
+    }
+    if (weightA < 1 || weightB < 0) {
+        PyErr_SetString(AudioopError,
+            "weightA should be >= 1, weightB should be >= 0");
+        return NULL;
+    }
+    if (len % bytes_per_frame != 0) {
+        PyErr_SetString(AudioopError, "not a whole number of frames");
+        return NULL;
+    }
+    if (inrate <= 0 || outrate <= 0) {
+        PyErr_SetString(AudioopError, "sampling rate not > 0");
+        return NULL;
+    }
+    /* divide inrate and outrate by their greatest common divisor */
+    d = gcd(inrate, outrate);
+    inrate /= d;
+    outrate /= d;
+
+    alloc_size = sizeof(int) * (unsigned)nchannels;
+    if (alloc_size < (unsigned)nchannels) {
+        PyErr_SetString(PyExc_MemoryError,
+                        "not enough memory for output buffer");
+        return 0;
+    }
+    prev_i = (int *) malloc(alloc_size);
+    cur_i = (int *) malloc(alloc_size);
+    if (prev_i == NULL || cur_i == NULL) {
+        (void) PyErr_NoMemory();
+        goto exit;
+    }
+
+    len /= bytes_per_frame; /* # of frames */
+
+    if (state == Py_None) {
+        d = -outrate;
+        for (chan = 0; chan < nchannels; chan++)
+            prev_i[chan] = cur_i[chan] = 0;
+    }
+    else {
+        if (!PyArg_ParseTuple(state,
+                        "iO!;audioop.ratecv: illegal state argument",
+                        &d, &PyTuple_Type, &samps))
+            goto exit;
+        if (PyTuple_Size(samps) != nchannels) {
+            PyErr_SetString(AudioopError,
+                            "illegal state argument");
+            goto exit;
+        }
+        for (chan = 0; chan < nchannels; chan++) {
+            if (!PyArg_ParseTuple(PyTuple_GetItem(samps, chan),
+                                  "ii:ratecv", &prev_i[chan],
+                                               &cur_i[chan]))
                 goto exit;
         }
+    }
 
-        len /= bytes_per_frame; /* # of frames */
+    /* str <- Space for the output buffer. */
+    {
+        /* There are len input frames, so we need (mathematically)
+           ceiling(len*outrate/inrate) output frames, and each frame
+           requires bytes_per_frame bytes.  Computing this
+           without spurious overflow is the challenge; we can
+           settle for a reasonable upper bound, though. */
+        int ceiling;   /* the number of output frames */
+        int nbytes;    /* the number of output bytes needed */
+        int q = len / inrate;
+        /* Now len = q * inrate + r exactly (with r = len % inrate),
+           and this is less than q * inrate + inrate = (q+1)*inrate.
+           So a reasonable upper bound on len*outrate/inrate is
+           ((q+1)*inrate)*outrate/inrate =
+           (q+1)*outrate.
+        */
+        ceiling = (q+1) * outrate;
+        nbytes = ceiling * bytes_per_frame;
+        /* See whether anything overflowed; if not, get the space. */
+        if (q+1 < 0 ||
+            ceiling / outrate != q+1 ||
+            nbytes / bytes_per_frame != ceiling)
+            str = NULL;
+        else
+            str = PyBytes_FromStringAndSize(NULL, nbytes);
 
-        if (state == Py_None) {
-                d = -outrate;
+        if (str == NULL) {
+            PyErr_SetString(PyExc_MemoryError,
+                "not enough memory for output buffer");
+            goto exit;
+        }
+    }
+    ncp = PyBytes_AsString(str);
+
+    for (;;) {
+        while (d < 0) {
+            if (len == 0) {
+                samps = PyTuple_New(nchannels);
+                if (samps == NULL)
+                    goto exit;
                 for (chan = 0; chan < nchannels; chan++)
-                        prev_i[chan] = cur_i[chan] = 0;
-        }
-        else {
-                if (!PyArg_ParseTuple(state,
-                                "iO!;audioop.ratecv: illegal state argument",
-                                &d, &PyTuple_Type, &samps))
-                        goto exit;
-                if (PyTuple_Size(samps) != nchannels) {
-                        PyErr_SetString(AudioopError,
-                                        "illegal state argument");
-                        goto exit;
-                }
-                for (chan = 0; chan < nchannels; chan++) {
-                        if (!PyArg_ParseTuple(PyTuple_GetItem(samps, chan),
-                                              "ii:ratecv", &prev_i[chan], 
-					                   &cur_i[chan]))
-                                goto exit;
-                }
-        }
-
-        /* str <- Space for the output buffer. */
-        {
-                /* There are len input frames, so we need (mathematically)
-                   ceiling(len*outrate/inrate) output frames, and each frame
-                   requires bytes_per_frame bytes.  Computing this
-                   without spurious overflow is the challenge; we can
-                   settle for a reasonable upper bound, though. */
-                int ceiling;   /* the number of output frames */
-                int nbytes;    /* the number of output bytes needed */
-                int q = len / inrate;
-                /* Now len = q * inrate + r exactly (with r = len % inrate),
-                   and this is less than q * inrate + inrate = (q+1)*inrate.
-                   So a reasonable upper bound on len*outrate/inrate is
-                   ((q+1)*inrate)*outrate/inrate =
-                   (q+1)*outrate.
-                */
-                ceiling = (q+1) * outrate;
-                nbytes = ceiling * bytes_per_frame;
-                /* See whether anything overflowed; if not, get the space. */
-                if (q+1 < 0 ||
-                    ceiling / outrate != q+1 ||
-                    nbytes / bytes_per_frame != ceiling)
-                        str = NULL;
-                else
-                        str = PyBytes_FromStringAndSize(NULL, nbytes);
-
-                if (str == NULL) {
-                        PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                        goto exit;
-                }
-        }
-        ncp = PyBytes_AsString(str);
-
-        for (;;) {
-                while (d < 0) {
-                        if (len == 0) {
-                                samps = PyTuple_New(nchannels);
-                                if (samps == NULL)
-                                        goto exit;
-                                for (chan = 0; chan < nchannels; chan++)
-                                        PyTuple_SetItem(samps, chan,
-                                                Py_BuildValue("(ii)",
-                                                              prev_i[chan],
-                                                              cur_i[chan]));
-                                if (PyErr_Occurred())
-                                        goto exit;
-                                /* We have checked before that the length
-                                 * of the string fits into int. */
-                                len = (int)(ncp - PyBytes_AsString(str));
-				rv = PyBytes_FromStringAndSize
-					(PyBytes_AsString(str), len);
-				Py_DECREF(str);
-				str = rv;
-				if (str == NULL)
-                                        goto exit;
-                                rv = Py_BuildValue("(O(iO))", str, d, samps);
-                                Py_DECREF(samps);
-                                Py_DECREF(str);
-                                goto exit; /* return rv */
-                        }
-                        for (chan = 0; chan < nchannels; chan++) {
-                                prev_i[chan] = cur_i[chan];
-                                if (size == 1)
-                                    cur_i[chan] = ((int)*CHARP(cp, 0)) << 8;
-                                else if (size == 2)
-                                    cur_i[chan] = (int)*SHORTP(cp, 0);
-                                else if (size == 4)
-                                    cur_i[chan] = ((int)*LONGP(cp, 0)) >> 16;
-                                cp += size;
-                                /* implements a simple digital filter */
-                                cur_i[chan] =
-                                        (weightA * cur_i[chan] +
-                                         weightB * prev_i[chan]) /
-                                        (weightA + weightB);
-                        }
-                        len--;
-                        d += outrate;
-                }
-                while (d >= 0) {
-                        for (chan = 0; chan < nchannels; chan++) {
-                                cur_o = (prev_i[chan] * d +
-                                         cur_i[chan] * (outrate - d)) /
-                                        outrate;
-                                if (size == 1)
-                                    *CHARP(ncp, 0) = (signed char)(cur_o >> 8);
-                                else if (size == 2)
-                                    *SHORTP(ncp, 0) = (short)(cur_o);
-                                else if (size == 4)
-                                    *LONGP(ncp, 0) = (Py_Int32)(cur_o<<16);
-                                ncp += size;
-                        }
-                        d -= inrate;
-                }
+                    PyTuple_SetItem(samps, chan,
+                        Py_BuildValue("(ii)",
+                                      prev_i[chan],
+                                      cur_i[chan]));
+                if (PyErr_Occurred())
+                    goto exit;
+                /* We have checked before that the length
+                 * of the string fits into int. */
+                len = (int)(ncp - PyBytes_AsString(str));
+                rv = PyBytes_FromStringAndSize
+                    (PyBytes_AsString(str), len);
+                Py_DECREF(str);
+                str = rv;
+                if (str == NULL)
+                    goto exit;
+                rv = Py_BuildValue("(O(iO))", str, d, samps);
+                Py_DECREF(samps);
+                Py_DECREF(str);
+                goto exit; /* return rv */
+            }
+            for (chan = 0; chan < nchannels; chan++) {
+                prev_i[chan] = cur_i[chan];
+                if (size == 1)
+                    cur_i[chan] = ((int)*CHARP(cp, 0)) << 8;
+                else if (size == 2)
+                    cur_i[chan] = (int)*SHORTP(cp, 0);
+                else if (size == 4)
+                    cur_i[chan] = ((int)*LONGP(cp, 0)) >> 16;
+                cp += size;
+                /* implements a simple digital filter */
+                cur_i[chan] =
+                    (weightA * cur_i[chan] +
+                     weightB * prev_i[chan]) /
+                    (weightA + weightB);
+            }
+            len--;
+            d += outrate;
+        }
+        while (d >= 0) {
+            for (chan = 0; chan < nchannels; chan++) {
+                cur_o = (prev_i[chan] * d +
+                         cur_i[chan] * (outrate - d)) /
+                    outrate;
+                if (size == 1)
+                    *CHARP(ncp, 0) = (signed char)(cur_o >> 8);
+                else if (size == 2)
+                    *SHORTP(ncp, 0) = (short)(cur_o);
+                else if (size == 4)
+                    *LONGP(ncp, 0) = (Py_Int32)(cur_o<<16);
+                ncp += size;
+            }
+            d -= inrate;
         }
+    }
   exit:
-        if (prev_i != NULL)
-                free(prev_i);
-        if (cur_i != NULL)
-                free(cur_i);
-        return rv;
+    if (prev_i != NULL)
+        free(prev_i);
+    if (cur_i != NULL)
+        free(cur_i);
+    return rv;
 }
 
 static PyObject *
 audioop_lin2ulaw(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        unsigned char *ncp;
-        int len, size, val = 0;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#i:lin2ulaw",
-                               &cp, &len, &size) )
-                return 0 ;
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        rv = PyBytes_FromStringAndSize(NULL, len/size);
-        if ( rv == 0 )
-                return 0;
-        ncp = (unsigned char *)PyBytes_AsString(rv);
-    
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
-
-                *ncp++ = st_14linear2ulaw(val);
-        }
-        return rv;
+    signed char *cp;
+    unsigned char *ncp;
+    int len, size, val = 0;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#i:lin2ulaw",
+                           &cp, &len, &size) )
+        return 0 ;
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len/size);
+    if ( rv == 0 )
+        return 0;
+    ncp = (unsigned char *)PyBytes_AsString(rv);
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
+
+        *ncp++ = st_14linear2ulaw(val);
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_ulaw2lin(PyObject *self, PyObject *args)
 {
-        unsigned char *cp;
-        unsigned char cval;
-        signed char *ncp;
-        int len, new_len, size, val;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#i:ulaw2lin",
-                               &cp, &len, &size) )
-                return 0;
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        new_len = len*size;
-        if (new_len < 0) {
-                PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                return 0;
-        }
-        rv = PyBytes_FromStringAndSize(NULL, new_len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-    
-        for ( i=0; i < new_len; i += size ) {
-                cval = *cp++;
-                val = st_ulaw2linear16(cval);
-        
-                if ( size == 1 )      *CHARP(ncp, i) = (signed char)(val >> 8);
-                else if ( size == 2 ) *SHORTP(ncp, i) = (short)(val);
-                else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(val<<16);
-        }
-        return rv;
+    unsigned char *cp;
+    unsigned char cval;
+    signed char *ncp;
+    int len, new_len, size, val;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#i:ulaw2lin",
+                           &cp, &len, &size) )
+        return 0;
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    new_len = len*size;
+    if (new_len < 0) {
+        PyErr_SetString(PyExc_MemoryError,
+                        "not enough memory for output buffer");
+        return 0;
+    }
+    rv = PyBytes_FromStringAndSize(NULL, new_len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
+
+    for ( i=0; i < new_len; i += size ) {
+        cval = *cp++;
+        val = st_ulaw2linear16(cval);
+
+        if ( size == 1 )      *CHARP(ncp, i) = (signed char)(val >> 8);
+        else if ( size == 2 ) *SHORTP(ncp, i) = (short)(val);
+        else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(val<<16);
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_lin2alaw(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        unsigned char *ncp;
-        int len, size, val = 0;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#i:lin2alaw",
-                               &cp, &len, &size) )
-                return 0;
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        rv = PyBytes_FromStringAndSize(NULL, len/size);
-        if ( rv == 0 )
-                return 0;
-        ncp = (unsigned char *)PyBytes_AsString(rv);
-    
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
-
-                *ncp++ = st_linear2alaw(val);
-        }
-        return rv;
+    signed char *cp;
+    unsigned char *ncp;
+    int len, size, val = 0;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#i:lin2alaw",
+                           &cp, &len, &size) )
+        return 0;
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    rv = PyBytes_FromStringAndSize(NULL, len/size);
+    if ( rv == 0 )
+        return 0;
+    ncp = (unsigned char *)PyBytes_AsString(rv);
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
+
+        *ncp++ = st_linear2alaw(val);
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_alaw2lin(PyObject *self, PyObject *args)
 {
-        unsigned char *cp;
-        unsigned char cval;
-        signed char *ncp;
-        int len, new_len, size, val;
-        PyObject *rv;
-        int i;
-
-        if ( !PyArg_ParseTuple(args, "s#i:alaw2lin",
-                               &cp, &len, &size) )
-                return 0;
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        new_len = len*size;
-        if (new_len < 0) {
-                PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                return 0;
-        }
-        rv = PyBytes_FromStringAndSize(NULL, new_len);
-        if ( rv == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(rv);
-    
-        for ( i=0; i < new_len; i += size ) {
-                cval = *cp++;
-                val = st_alaw2linear16(cval);
-        
-                if ( size == 1 )      *CHARP(ncp, i) = (signed char)(val >> 8);
-                else if ( size == 2 ) *SHORTP(ncp, i) = (short)(val);
-                else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(val<<16);
-        }
-        return rv;
+    unsigned char *cp;
+    unsigned char cval;
+    signed char *ncp;
+    int len, new_len, size, val;
+    PyObject *rv;
+    int i;
+
+    if ( !PyArg_ParseTuple(args, "s#i:alaw2lin",
+                           &cp, &len, &size) )
+        return 0;
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    new_len = len*size;
+    if (new_len < 0) {
+        PyErr_SetString(PyExc_MemoryError,
+                        "not enough memory for output buffer");
+        return 0;
+    }
+    rv = PyBytes_FromStringAndSize(NULL, new_len);
+    if ( rv == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(rv);
+
+    for ( i=0; i < new_len; i += size ) {
+        cval = *cp++;
+        val = st_alaw2linear16(cval);
+
+        if ( size == 1 )      *CHARP(ncp, i) = (signed char)(val >> 8);
+        else if ( size == 2 ) *SHORTP(ncp, i) = (short)(val);
+        else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(val<<16);
+    }
+    return rv;
 }
 
 static PyObject *
 audioop_lin2adpcm(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        signed char *ncp;
-        int len, size, val = 0, step, valpred, delta,
-                index, sign, vpdiff, diff;
-        PyObject *rv, *state, *str;
-        int i, outputbuffer = 0, bufferstep;
-
-        if ( !PyArg_ParseTuple(args, "s#iO:lin2adpcm",
-                               &cp, &len, &size, &state) )
-                return 0;
-    
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        str = PyBytes_FromStringAndSize(NULL, len/(size*2));
-        if ( str == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(str);
-
-        /* Decode state, should have (value, step) */
-        if ( state == Py_None ) {
-                /* First time, it seems. Set defaults */
-                valpred = 0;
-                step = 7;
-                index = 0;
-        } else if ( !PyArg_ParseTuple(state, "ii", &valpred, &index) )
-                return 0;
+    signed char *cp;
+    signed char *ncp;
+    int len, size, val = 0, step, valpred, delta,
+        index, sign, vpdiff, diff;
+    PyObject *rv, *state, *str;
+    int i, outputbuffer = 0, bufferstep;
+
+    if ( !PyArg_ParseTuple(args, "s#iO:lin2adpcm",
+                           &cp, &len, &size, &state) )
+        return 0;
+
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    str = PyBytes_FromStringAndSize(NULL, len/(size*2));
+    if ( str == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(str);
+
+    /* Decode state, should have (value, step) */
+    if ( state == Py_None ) {
+        /* First time, it seems. Set defaults */
+        valpred = 0;
+        step = 7;
+        index = 0;
+    } else if ( !PyArg_ParseTuple(state, "ii", &valpred, &index) )
+        return 0;
+
+    step = stepsizeTable[index];
+    bufferstep = 1;
+
+    for ( i=0; i < len; i += size ) {
+        if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
+        else if ( size == 2 ) val = (int)*SHORTP(cp, i);
+        else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
+
+        /* Step 1 - compute difference with previous value */
+        diff = val - valpred;
+        sign = (diff < 0) ? 8 : 0;
+        if ( sign ) diff = (-diff);
+
+        /* Step 2 - Divide and clamp */
+        /* Note:
+        ** This code *approximately* computes:
+        **    delta = diff*4/step;
+        **    vpdiff = (delta+0.5)*step/4;
+        ** but in shift step bits are dropped. The net result of this
+        ** is that even if you have fast mul/div hardware you cannot
+        ** put it to good use since the fixup would be too expensive.
+        */
+        delta = 0;
+        vpdiff = (step >> 3);
 
+        if ( diff >= step ) {
+            delta = 4;
+            diff -= step;
+            vpdiff += step;
+        }
+        step >>= 1;
+        if ( diff >= step  ) {
+            delta |= 2;
+            diff -= step;
+            vpdiff += step;
+        }
+        step >>= 1;
+        if ( diff >= step ) {
+            delta |= 1;
+            vpdiff += step;
+        }
+
+        /* Step 3 - Update previous value */
+        if ( sign )
+            valpred -= vpdiff;
+        else
+            valpred += vpdiff;
+
+        /* Step 4 - Clamp previous value to 16 bits */
+        if ( valpred > 32767 )
+            valpred = 32767;
+        else if ( valpred < -32768 )
+            valpred = -32768;
+
+        /* Step 5 - Assemble value, update index and step values */
+        delta |= sign;
+
+        index += indexTable[delta];
+        if ( index < 0 ) index = 0;
+        if ( index > 88 ) index = 88;
         step = stepsizeTable[index];
-        bufferstep = 1;
 
-        for ( i=0; i < len; i += size ) {
-                if ( size == 1 )      val = ((int)*CHARP(cp, i)) << 8;
-                else if ( size == 2 ) val = (int)*SHORTP(cp, i);
-                else if ( size == 4 ) val = ((int)*LONGP(cp, i)) >> 16;
-
-                /* Step 1 - compute difference with previous value */
-                diff = val - valpred;
-                sign = (diff < 0) ? 8 : 0;
-                if ( sign ) diff = (-diff);
-
-                /* Step 2 - Divide and clamp */
-                /* Note:
-                ** This code *approximately* computes:
-                **    delta = diff*4/step;
-                **    vpdiff = (delta+0.5)*step/4;
-                ** but in shift step bits are dropped. The net result of this
-                ** is that even if you have fast mul/div hardware you cannot
-                ** put it to good use since the fixup would be too expensive.
-                */
-                delta = 0;
-                vpdiff = (step >> 3);
-        
-                if ( diff >= step ) {
-                        delta = 4;
-                        diff -= step;
-                        vpdiff += step;
-                }
-                step >>= 1;
-                if ( diff >= step  ) {
-                        delta |= 2;
-                        diff -= step;
-                        vpdiff += step;
-                }
-                step >>= 1;
-                if ( diff >= step ) {
-                        delta |= 1;
-                        vpdiff += step;
-                }
-
-                /* Step 3 - Update previous value */
-                if ( sign )
-                        valpred -= vpdiff;
-                else
-                        valpred += vpdiff;
-
-                /* Step 4 - Clamp previous value to 16 bits */
-                if ( valpred > 32767 )
-                        valpred = 32767;
-                else if ( valpred < -32768 )
-                        valpred = -32768;
-
-                /* Step 5 - Assemble value, update index and step values */
-                delta |= sign;
-        
-                index += indexTable[delta];
-                if ( index < 0 ) index = 0;
-                if ( index > 88 ) index = 88;
-                step = stepsizeTable[index];
-
-                /* Step 6 - Output value */
-                if ( bufferstep ) {
-                        outputbuffer = (delta << 4) & 0xf0;
-                } else {
-                        *ncp++ = (delta & 0x0f) | outputbuffer;
-                }
-                bufferstep = !bufferstep;
+        /* Step 6 - Output value */
+        if ( bufferstep ) {
+            outputbuffer = (delta << 4) & 0xf0;
+        } else {
+            *ncp++ = (delta & 0x0f) | outputbuffer;
         }
-        rv = Py_BuildValue("(O(ii))", str, valpred, index);
-        Py_DECREF(str);
-        return rv;
+        bufferstep = !bufferstep;
+    }
+    rv = Py_BuildValue("(O(ii))", str, valpred, index);
+    Py_DECREF(str);
+    return rv;
 }
 
 static PyObject *
 audioop_adpcm2lin(PyObject *self, PyObject *args)
 {
-        signed char *cp;
-        signed char *ncp;
-        int len, new_len, size, valpred, step, delta, index, sign, vpdiff;
-        PyObject *rv, *str, *state;
-        int i, inputbuffer = 0, bufferstep;
-
-        if ( !PyArg_ParseTuple(args, "s#iO:adpcm2lin",
-                               &cp, &len, &size, &state) )
-                return 0;
-
-        if ( size != 1 && size != 2 && size != 4) {
-                PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
-                return 0;
-        }
-    
-        /* Decode state, should have (value, step) */
-        if ( state == Py_None ) {
-                /* First time, it seems. Set defaults */
-                valpred = 0;
-                step = 7;
-                index = 0;
-        } else if ( !PyArg_ParseTuple(state, "ii", &valpred, &index) )
-                return 0;
-    
-        new_len = len*size*2;
-        if (new_len < 0) {
-                PyErr_SetString(PyExc_MemoryError,
-                                "not enough memory for output buffer");
-                return 0;
+    signed char *cp;
+    signed char *ncp;
+    int len, new_len, size, valpred, step, delta, index, sign, vpdiff;
+    PyObject *rv, *str, *state;
+    int i, inputbuffer = 0, bufferstep;
+
+    if ( !PyArg_ParseTuple(args, "s#iO:adpcm2lin",
+                           &cp, &len, &size, &state) )
+        return 0;
+
+    if ( size != 1 && size != 2 && size != 4) {
+        PyErr_SetString(AudioopError, "Size should be 1, 2 or 4");
+        return 0;
+    }
+
+    /* Decode state, should have (value, step) */
+    if ( state == Py_None ) {
+        /* First time, it seems. Set defaults */
+        valpred = 0;
+        step = 7;
+        index = 0;
+    } else if ( !PyArg_ParseTuple(state, "ii", &valpred, &index) )
+        return 0;
+
+    new_len = len*size*2;
+    if (new_len < 0) {
+        PyErr_SetString(PyExc_MemoryError,
+                        "not enough memory for output buffer");
+        return 0;
+    }
+    str = PyBytes_FromStringAndSize(NULL, new_len);
+    if ( str == 0 )
+        return 0;
+    ncp = (signed char *)PyBytes_AsString(str);
+
+    step = stepsizeTable[index];
+    bufferstep = 0;
+
+    for ( i=0; i < new_len; i += size ) {
+        /* Step 1 - get the delta value and compute next index */
+        if ( bufferstep ) {
+            delta = inputbuffer & 0xf;
+        } else {
+            inputbuffer = *cp++;
+            delta = (inputbuffer >> 4) & 0xf;
         }
-        str = PyBytes_FromStringAndSize(NULL, new_len);
-        if ( str == 0 )
-                return 0;
-        ncp = (signed char *)PyBytes_AsString(str);
 
+        bufferstep = !bufferstep;
+
+        /* Step 2 - Find new index value (for later) */
+        index += indexTable[delta];
+        if ( index < 0 ) index = 0;
+        if ( index > 88 ) index = 88;
+
+        /* Step 3 - Separate sign and magnitude */
+        sign = delta & 8;
+        delta = delta & 7;
+
+        /* Step 4 - Compute difference and new predicted value */
+        /*
+        ** Computes 'vpdiff = (delta+0.5)*step/4', but see comment
+        ** in adpcm_coder.
+        */
+        vpdiff = step >> 3;
+        if ( delta & 4 ) vpdiff += step;
+        if ( delta & 2 ) vpdiff += step>>1;
+        if ( delta & 1 ) vpdiff += step>>2;
+
+        if ( sign )
+            valpred -= vpdiff;
+        else
+            valpred += vpdiff;
+
+        /* Step 5 - clamp output value */
+        if ( valpred > 32767 )
+            valpred = 32767;
+        else if ( valpred < -32768 )
+            valpred = -32768;
+
+        /* Step 6 - Update step value */
         step = stepsizeTable[index];
-        bufferstep = 0;
-    
-        for ( i=0; i < new_len; i += size ) {
-                /* Step 1 - get the delta value and compute next index */
-                if ( bufferstep ) {
-                        delta = inputbuffer & 0xf;
-                } else {
-                        inputbuffer = *cp++;
-                        delta = (inputbuffer >> 4) & 0xf;
-                }
-
-                bufferstep = !bufferstep;
-
-                /* Step 2 - Find new index value (for later) */
-                index += indexTable[delta];
-                if ( index < 0 ) index = 0;
-                if ( index > 88 ) index = 88;
-
-                /* Step 3 - Separate sign and magnitude */
-                sign = delta & 8;
-                delta = delta & 7;
-
-                /* Step 4 - Compute difference and new predicted value */
-                /*
-                ** Computes 'vpdiff = (delta+0.5)*step/4', but see comment
-                ** in adpcm_coder.
-                */
-                vpdiff = step >> 3;
-                if ( delta & 4 ) vpdiff += step;
-                if ( delta & 2 ) vpdiff += step>>1;
-                if ( delta & 1 ) vpdiff += step>>2;
-
-                if ( sign )
-                        valpred -= vpdiff;
-                else
-                        valpred += vpdiff;
-
-                /* Step 5 - clamp output value */
-                if ( valpred > 32767 )
-                        valpred = 32767;
-                else if ( valpred < -32768 )
-                        valpred = -32768;
-
-                /* Step 6 - Update step value */
-                step = stepsizeTable[index];
-
-                /* Step 6 - Output value */
-                if ( size == 1 ) *CHARP(ncp, i) = (signed char)(valpred >> 8);
-                else if ( size == 2 ) *SHORTP(ncp, i) = (short)(valpred);
-                else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(valpred<<16);
-        }
 
-        rv = Py_BuildValue("(O(ii))", str, valpred, index);
-        Py_DECREF(str);
-        return rv;
+        /* Step 6 - Output value */
+        if ( size == 1 ) *CHARP(ncp, i) = (signed char)(valpred >> 8);
+        else if ( size == 2 ) *SHORTP(ncp, i) = (short)(valpred);
+        else if ( size == 4 ) *LONGP(ncp, i) = (Py_Int32)(valpred<<16);
+    }
+
+    rv = Py_BuildValue("(O(ii))", str, valpred, index);
+    Py_DECREF(str);
+    return rv;
 }
 
 static PyMethodDef audioop_methods[] = {
-        { "max", audioop_max, METH_VARARGS },
-        { "minmax", audioop_minmax, METH_VARARGS },
-        { "avg", audioop_avg, METH_VARARGS },
-        { "maxpp", audioop_maxpp, METH_VARARGS },
-        { "avgpp", audioop_avgpp, METH_VARARGS },
-        { "rms", audioop_rms, METH_VARARGS },
-        { "findfit", audioop_findfit, METH_VARARGS },
-        { "findmax", audioop_findmax, METH_VARARGS },
-        { "findfactor", audioop_findfactor, METH_VARARGS },
-        { "cross", audioop_cross, METH_VARARGS },
-        { "mul", audioop_mul, METH_VARARGS },
-        { "add", audioop_add, METH_VARARGS },
-        { "bias", audioop_bias, METH_VARARGS },
-        { "ulaw2lin", audioop_ulaw2lin, METH_VARARGS },
-        { "lin2ulaw", audioop_lin2ulaw, METH_VARARGS },
-        { "alaw2lin", audioop_alaw2lin, METH_VARARGS },
-        { "lin2alaw", audioop_lin2alaw, METH_VARARGS },
-        { "lin2lin", audioop_lin2lin, METH_VARARGS },
-        { "adpcm2lin", audioop_adpcm2lin, METH_VARARGS },
-        { "lin2adpcm", audioop_lin2adpcm, METH_VARARGS },
-        { "tomono", audioop_tomono, METH_VARARGS },
-        { "tostereo", audioop_tostereo, METH_VARARGS },
-        { "getsample", audioop_getsample, METH_VARARGS },
-        { "reverse", audioop_reverse, METH_VARARGS },
-        { "ratecv", audioop_ratecv, METH_VARARGS },
-        { 0,          0 }
+    { "max", audioop_max, METH_VARARGS },
+    { "minmax", audioop_minmax, METH_VARARGS },
+    { "avg", audioop_avg, METH_VARARGS },
+    { "maxpp", audioop_maxpp, METH_VARARGS },
+    { "avgpp", audioop_avgpp, METH_VARARGS },
+    { "rms", audioop_rms, METH_VARARGS },
+    { "findfit", audioop_findfit, METH_VARARGS },
+    { "findmax", audioop_findmax, METH_VARARGS },
+    { "findfactor", audioop_findfactor, METH_VARARGS },
+    { "cross", audioop_cross, METH_VARARGS },
+    { "mul", audioop_mul, METH_VARARGS },
+    { "add", audioop_add, METH_VARARGS },
+    { "bias", audioop_bias, METH_VARARGS },
+    { "ulaw2lin", audioop_ulaw2lin, METH_VARARGS },
+    { "lin2ulaw", audioop_lin2ulaw, METH_VARARGS },
+    { "alaw2lin", audioop_alaw2lin, METH_VARARGS },
+    { "lin2alaw", audioop_lin2alaw, METH_VARARGS },
+    { "lin2lin", audioop_lin2lin, METH_VARARGS },
+    { "adpcm2lin", audioop_adpcm2lin, METH_VARARGS },
+    { "lin2adpcm", audioop_lin2adpcm, METH_VARARGS },
+    { "tomono", audioop_tomono, METH_VARARGS },
+    { "tostereo", audioop_tostereo, METH_VARARGS },
+    { "getsample", audioop_getsample, METH_VARARGS },
+    { "reverse", audioop_reverse, METH_VARARGS },
+    { "ratecv", audioop_ratecv, METH_VARARGS },
+    { 0,          0 }
 };
 
 
 static struct PyModuleDef audioopmodule = {
-	PyModuleDef_HEAD_INIT,
-	"audioop",
-	NULL,
-	-1,
-	audioop_methods,
-	NULL,
-	NULL,
-	NULL,
-	NULL
+    PyModuleDef_HEAD_INIT,
+    "audioop",
+    NULL,
+    -1,
+    audioop_methods,
+    NULL,
+    NULL,
+    NULL,
+    NULL
 };
 
 PyMODINIT_FUNC
 PyInit_audioop(void)
 {
-        PyObject *m, *d;
-        m = PyModule_Create(&audioopmodule);
-        if (m == NULL)
-                return NULL;
-        d = PyModule_GetDict(m);
-        if (d == NULL)
-                return NULL;
-        AudioopError = PyErr_NewException("audioop.error", NULL, NULL);
-        if (AudioopError != NULL)
-             PyDict_SetItemString(d,"error",AudioopError);
-	return m;
+    PyObject *m, *d;
+    m = PyModule_Create(&audioopmodule);
+    if (m == NULL)
+        return NULL;
+    d = PyModule_GetDict(m);
+    if (d == NULL)
+        return NULL;
+    AudioopError = PyErr_NewException("audioop.error", NULL, NULL);
+    if (AudioopError != NULL)
+         PyDict_SetItemString(d,"error",AudioopError);
+    return m;
 }