COMMON: Fix some formatting

This commit is contained in:
Matthew Hoops 2011-07-19 10:23:16 -04:00
parent b3e6899f90
commit 9ad45e28a1
2 changed files with 95 additions and 103 deletions

View file

@ -51,21 +51,18 @@ DCT::~DCT() {
void DCT::calc(float *data) {
switch (_trans) {
case DCT_I:
calcDCTI(data);
break;
case DCT_II:
calcDCTII(data);
break;
case DCT_III:
calcDCTIII(data);
break;
case DST_I:
calcDSTI(data);
break;
case DCT_I:
calcDCTI(data);
break;
case DCT_II:
calcDCTII(data);
break;
case DCT_III:
calcDCTIII(data);
break;
case DST_I:
calcDSTI(data);
break;
}
}
@ -119,8 +116,8 @@ void DCT::calcDCTII(float *data) {
tmp1 = (tmp1 + tmp2) * 0.5;
data[i ] = tmp1 + s;
data[n-i-1] = tmp1 - s;
data[i ] = tmp1 + s;
data[n - i - 1] = tmp1 - s;
}
_rdft->calc(data);
@ -136,8 +133,8 @@ void DCT::calcDCTII(float *data) {
float c = COS(n, i);
float s = SIN(n, i);
data[i ] = c * inr + s * ini;
data[i+1] = next;
data[i ] = c * inr + s * ini;
data[i + 1] = next;
next += s * inr - c * ini;
}

View file

@ -57,7 +57,7 @@ void FFT::permute(Complex *z) {
int np = 1 << _bits;
if (_tmpBuf) {
for(int j = 0; j < np; j++)
for (int j = 0; j < np; j++)
_tmpBuf[_revTab[j]] = z[j];
memcpy(z, _tmpBuf, np * sizeof(Complex));
@ -66,7 +66,7 @@ void FFT::permute(Complex *z) {
}
// Reverse
for(int j = 0; j < np; j++) {
for (int j = 0; j < np; j++) {
int k = _revTab[j];
if (k < j)
@ -80,12 +80,12 @@ int FFT::splitRadixPermutation(int i, int n, int inverse) {
int m = n >> 1;
if(!(i & m))
if (!(i & m))
return splitRadixPermutation(i, m, inverse) * 2;
m >>= 1;
if(inverse == !(i & m))
if (inverse == !(i & m))
return splitRadixPermutation(i, m, inverse) * 4 + 1;
return splitRadixPermutation(i, m, inverse) * 4 - 1;
@ -93,68 +93,67 @@ int FFT::splitRadixPermutation(int i, int n, int inverse) {
#define sqrthalf (float)M_SQRT1_2
#define BF(x,y,a,b) {\
x = a - b;\
y = a + b;\
#define BF(x, y, a, b) { \
x = a - b; \
y = a + b; \
}
#define BUTTERFLIES(a0,a1,a2,a3) {\
BF(t3, t5, t5, t1);\
BF(a2.re, a0.re, a0.re, t5);\
BF(a3.im, a1.im, a1.im, t3);\
BF(t4, t6, t2, t6);\
BF(a3.re, a1.re, a1.re, t4);\
BF(a2.im, a0.im, a0.im, t6);\
#define BUTTERFLIES(a0, a1, a2, a3) { \
BF(t3, t5, t5, t1); \
BF(a2.re, a0.re, a0.re, t5); \
BF(a3.im, a1.im, a1.im, t3); \
BF(t4, t6, t2, t6); \
BF(a3.re, a1.re, a1.re, t4); \
BF(a2.im, a0.im, a0.im, t6); \
}
// force loading all the inputs before storing any.
// this is slightly slower for small data, but avoids store->load aliasing
// for addresses separated by large powers of 2.
#define BUTTERFLIES_BIG(a0,a1,a2,a3) {\
float r0=a0.re, i0=a0.im, r1=a1.re, i1=a1.im;\
BF(t3, t5, t5, t1);\
BF(a2.re, a0.re, r0, t5);\
BF(a3.im, a1.im, i1, t3);\
BF(t4, t6, t2, t6);\
BF(a3.re, a1.re, r1, t4);\
BF(a2.im, a0.im, i0, t6);\
#define BUTTERFLIES_BIG(a0, a1, a2, a3) { \
float r0 = a0.re, i0 = a0.im, r1 = a1.re, i1 = a1.im; \
BF(t3, t5, t5, t1); \
BF(a2.re, a0.re, r0, t5); \
BF(a3.im, a1.im, i1, t3); \
BF(t4, t6, t2, t6); \
BF(a3.re, a1.re, r1, t4); \
BF(a2.im, a0.im, i0, t6); \
}
#define TRANSFORM(a0,a1,a2,a3,wre,wim) {\
t1 = a2.re * wre + a2.im * wim;\
t2 = a2.im * wre - a2.re * wim;\
t5 = a3.re * wre - a3.im * wim;\
t6 = a3.im * wre + a3.re * wim;\
BUTTERFLIES(a0,a1,a2,a3)\
#define TRANSFORM(a0, a1, a2, a3, wre, wim) { \
t1 = a2.re * wre + a2.im * wim; \
t2 = a2.im * wre - a2.re * wim; \
t5 = a3.re * wre - a3.im * wim; \
t6 = a3.im * wre + a3.re * wim; \
BUTTERFLIES(a0, a1, a2, a3) \
}
#define TRANSFORM_ZERO(a0,a1,a2,a3) {\
t1 = a2.re;\
t2 = a2.im;\
t5 = a3.re;\
t6 = a3.im;\
BUTTERFLIES(a0,a1,a2,a3)\
#define TRANSFORM_ZERO(a0, a1, a2, a3) { \
t1 = a2.re; \
t2 = a2.im; \
t5 = a3.re; \
t6 = a3.im; \
BUTTERFLIES(a0, a1, a2, a3) \
}
/* z[0...8n-1], w[1...2n-1] */
#define PASS(name)\
static void name(Complex *z, const float *wre, unsigned int n)\
{\
float t1, t2, t3, t4, t5, t6;\
int o1 = 2*n;\
int o2 = 4*n;\
int o3 = 6*n;\
const float *wim = wre+o1;\
n--;\
\
TRANSFORM_ZERO(z[0],z[o1],z[o2],z[o3]);\
TRANSFORM(z[1],z[o1+1],z[o2+1],z[o3+1],wre[1],wim[-1]);\
do {\
z += 2;\
wre += 2;\
wim -= 2;\
TRANSFORM(z[0],z[o1],z[o2],z[o3],wre[0],wim[0]);\
TRANSFORM(z[1],z[o1+1],z[o2+1],z[o3+1],wre[1],wim[-1]);\
#define PASS(name) \
static void name(Complex *z, const float *wre, unsigned int n) { \
float t1, t2, t3, t4, t5, t6; \
int o1 = 2 * n; \
int o2 = 4 * n; \
int o3 = 6 * n; \
const float *wim = wre + o1; \
n--; \
\
TRANSFORM_ZERO(z[0], z[o1], z[o2], z[o3]); \
TRANSFORM(z[1], z[o1 + 1], z[o2 + 1], z[o3 + 1], wre[1], wim[-1]); \
do { \
z += 2; \
wre += 2; \
wim -= 2; \
TRANSFORM(z[0], z[o1], z[o2], z[o3], wre[0], wim[0]);\
TRANSFORM(z[1], z[o1 + 1], z[o2 + 1], z[o3 + 1], wre[1], wim[-1]);\
} while(--n);\
}
@ -163,17 +162,15 @@ PASS(pass)
#define BUTTERFLIES BUTTERFLIES_BIG
PASS(pass_big)
#define DECL_FFT(t,n,n2,n4)\
static void fft##n(Complex *z)\
{\
fft##n2(z);\
fft##n4(z+n4*2);\
fft##n4(z+n4*3);\
pass(z,getCosineTable(t),n4/2);\
#define DECL_FFT(t, n, n2, n4) \
static void fft##n(Complex *z) { \
fft##n2(z); \
fft##n4(z + n4 * 2); \
fft##n4(z + n4 * 3); \
pass(z, getCosineTable(t), n4 / 2);\
}
static void fft4(Complex *z)
{
static void fft4(Complex *z) {
float t1, t2, t3, t4, t5, t6, t7, t8;
BF(t3, t1, z[0].re, z[1].re);
@ -186,8 +183,7 @@ static void fft4(Complex *z)
BF(z[2].im, z[0].im, t2, t5);
}
static void fft8(Complex *z)
{
static void fft8(Complex *z) {
float t1, t2, t3, t4, t5, t6, t7, t8;
fft4(z);
@ -203,38 +199,37 @@ static void fft8(Complex *z)
BF(z[6].re, z[2].re, z[2].re, t7);
BF(z[6].im, z[2].im, z[2].im, t8);
TRANSFORM(z[1],z[3],z[5],z[7],sqrthalf,sqrthalf);
TRANSFORM(z[1], z[3], z[5], z[7], sqrthalf, sqrthalf);
}
static void fft16(Complex *z)
{
static void fft16(Complex *z) {
float t1, t2, t3, t4, t5, t6;
fft8(z);
fft4(z+8);
fft4(z+12);
fft4(z + 8);
fft4(z + 12);
const float * const cosTable = getCosineTable(4);
TRANSFORM_ZERO(z[0],z[4],z[8],z[12]);
TRANSFORM(z[2],z[6],z[10],z[14],sqrthalf,sqrthalf);
TRANSFORM(z[1],z[5],z[9],z[13],cosTable[1],cosTable[3]);
TRANSFORM(z[3],z[7],z[11],z[15],cosTable[3],cosTable[1]);
TRANSFORM_ZERO(z[0], z[4], z[8], z[12]);
TRANSFORM(z[2], z[6], z[10], z[14], sqrthalf, sqrthalf);
TRANSFORM(z[1], z[5], z[9], z[13], cosTable[1],cosTable[3]);
TRANSFORM(z[3], z[7], z[11], z[15], cosTable[3], cosTable[1]);
}
DECL_FFT(5, 32,16,8)
DECL_FFT(6, 64,32,16)
DECL_FFT(7, 128,64,32)
DECL_FFT(8, 256,128,64)
DECL_FFT(9, 512,256,128)
DECL_FFT(5, 32, 16, 8)
DECL_FFT(6, 64, 32, 16)
DECL_FFT(7, 128, 64, 32)
DECL_FFT(8, 256, 128, 64)
DECL_FFT(9, 512, 256, 128)
#define pass pass_big
DECL_FFT(10, 1024,512,256)
DECL_FFT(11, 2048,1024,512)
DECL_FFT(12, 4096,2048,1024)
DECL_FFT(13, 8192,4096,2048)
DECL_FFT(14, 16384,8192,4096)
DECL_FFT(15, 32768,16384,8192)
DECL_FFT(16, 65536,32768,16384)
DECL_FFT(10, 1024, 512, 256)
DECL_FFT(11, 2048, 1024, 512)
DECL_FFT(12, 4096, 2048, 1024)
DECL_FFT(13, 8192, 4096, 2048)
DECL_FFT(14, 16384, 8192, 4096)
DECL_FFT(15, 32768, 16384, 8192)
DECL_FFT(16, 65536, 32768, 16384)
static void (* const fft_dispatch[])(Complex*) = {
fft4, fft8, fft16, fft32, fft64, fft128, fft256, fft512, fft1024,