**************************************************************************/
#include "vpx_ports/config.h"
#include "vp8/common/idct.h"
+#include "vp8/common/systemdependent.h"
#if CONFIG_HYBRIDTRANSFORM
#include "vp8/common/blockd.h"
#if CONFIG_HYBRIDTRANSFORM8X8 || CONFIG_HYBRIDTRANSFORM || CONFIG_HYBRIDTRANSFORM16X16
void vp8_ihtllm_c(short *input, short *output, int pitch,
TX_TYPE tx_type, int tx_dim) {
- int i, j, k;
- float bufa[256], bufb[256]; // buffers are for floating-point test purpose
- // the implementation could be simplified in
- // conjunction with integer transform
-
- // further notice, since we are thinking to use one
- // function for both 4x4 and 8x8 transforms, the
- // temporary buffers are simply initialized with 64.
- short *ip = input;
- short *op = output;
- int shortpitch = pitch >> 1;
- float *pfa = &bufa[0];
- float *pfb = &bufb[0];
-
- // pointers to vertical and horizontal transforms
- float *ptv, *pth;
-
- // load and convert residual array into floating-point
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- pfa[i] = (float)ip[i];
- }
- pfa += tx_dim;
- ip += tx_dim;
- }
-
- // vertical transformation
- pfa = &bufa[0];
- pfb = &bufb[0];
-
- switch(tx_type) {
- case ADST_ADST :
- case ADST_DCT :
- ptv = (tx_dim == 4) ? &iadst_4[0] :
- ((tx_dim == 8) ? &iadst_8[0] : &iadst_16[0]);
- break;
-
- default :
- ptv = (tx_dim == 4) ? &idct_4[0] :
- ((tx_dim == 8) ? &idct_8[0] : &idct_16[0]);
- break;
- }
-
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- pfb[i] = 0 ;
- for(k = 0; k < tx_dim; k++) {
- pfb[i] += ptv[k] * pfa[(k * tx_dim)];
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ int i, j, k;
+ float bufa[256], bufb[256]; // buffers are for floating-point test purpose
+ // the implementation could be simplified in
+ // conjunction with integer transform
+
+ // further notice, since we are thinking to use
+ // one function for both 4x4 and 8x8 transforms
+ // the temporary buffers are simply initialized
+ // with 64.
+ short *ip = input;
+ short *op = output;
+ int shortpitch = pitch >> 1;
+
+ float *pfa = &bufa[0];
+ float *pfb = &bufb[0];
+
+ // pointers to vertical and horizontal transforms
+ float *ptv, *pth;
+
+ // load and convert residual array into floating-point
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ pfa[i] = (float)ip[i];
}
- pfa += 1;
+ pfa += tx_dim;
+ ip += tx_dim;
}
- pfb += tx_dim;
- ptv += tx_dim;
+ // vertical transformation
pfa = &bufa[0];
- }
+ pfb = &bufb[0];
- // horizontal transformation
- pfa = &bufa[0];
- pfb = &bufb[0];
-
- switch(tx_type) {
- case ADST_ADST :
- case DCT_ADST :
- pth = (tx_dim == 4) ? &iadst_4[0] :
- ((tx_dim == 8) ? &iadst_8[0] : &iadst_16[0]);
- break;
-
- default :
- pth = (tx_dim == 4) ? &idct_4[0] :
- ((tx_dim == 8) ? &idct_8[0] : &idct_16[0]);
- break;
- }
+ switch(tx_type) {
+ case ADST_ADST :
+ case ADST_DCT :
+ ptv = (tx_dim == 4) ? &iadst_4[0] :
+ ((tx_dim == 8) ? &iadst_8[0] : &iadst_16[0]);
+ break;
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- pfa[i] = 0;
- for(k = 0; k < tx_dim; k++) {
- pfa[i] += pfb[k] * pth[k];
+ default :
+ ptv = (tx_dim == 4) ? &idct_4[0] :
+ ((tx_dim == 8) ? &idct_8[0] : &idct_16[0]);
+ break;
+ }
+
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ pfb[i] = 0 ;
+ for(k = 0; k < tx_dim; k++) {
+ pfb[i] += ptv[k] * pfa[(k * tx_dim)];
+ }
+ pfa += 1;
}
- pth += tx_dim;
- }
- pfa += tx_dim;
- pfb += tx_dim;
+ pfb += tx_dim;
+ ptv += tx_dim;
+ pfa = &bufa[0];
+ }
+
+ // horizontal transformation
+ pfa = &bufa[0];
+ pfb = &bufb[0];
switch(tx_type) {
case ADST_ADST :
((tx_dim == 8) ? &idct_8[0] : &idct_16[0]);
break;
}
- }
-
- // convert to short integer format and load BLOCKD buffer
- op = output;
- pfa = &bufa[0];
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- op[i] = (pfa[i] > 0 ) ? (short)( pfa[i] / 8 + 0.49) :
- -(short)( - pfa[i] / 8 + 0.49);
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ pfa[i] = 0;
+ for(k = 0; k < tx_dim; k++) {
+ pfa[i] += pfb[k] * pth[k];
+ }
+ pth += tx_dim;
+ }
+
+ pfa += tx_dim;
+ pfb += tx_dim;
+
+ switch(tx_type) {
+ case ADST_ADST :
+ case DCT_ADST :
+ pth = (tx_dim == 4) ? &iadst_4[0] :
+ ((tx_dim == 8) ? &iadst_8[0] : &iadst_16[0]);
+ break;
+
+ default :
+ pth = (tx_dim == 4) ? &idct_4[0] :
+ ((tx_dim == 8) ? &idct_8[0] : &idct_16[0]);
+ break;
+ }
}
- op += shortpitch;
- pfa += tx_dim;
+ // convert to short integer format and load BLOCKD buffer
+ op = output;
+ pfa = &bufa[0];
+
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ op[i] = (pfa[i] > 0 ) ? (short)( pfa[i] / 8 + 0.49) :
+ -(short)( - pfa[i] / 8 + 0.49);
+ }
+
+ op += shortpitch;
+ pfa += tx_dim;
+ }
}
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
#endif
#if 0
// Keep a really bad float version as reference for now.
void vp8_short_idct16x16_c(short *input, short *output, int pitch) {
- double x;
- const int short_pitch = pitch >> 1;
- int i, j, k, l;
- for (l = 0; l < 16; ++l) {
- for (k = 0; k < 16; ++k) {
- double s = 0;
- for (i = 0; i < 16; ++i) {
- for (j = 0; j < 16; ++j) {
- x=cos(PI*j*(l+0.5)/16.0)*cos(PI*i*(k+0.5)/16.0)*input[i*16+j]/32;
- if (i != 0)
- x *= sqrt(2.0);
- if (j != 0)
- x *= sqrt(2.0);
- s += x;
+
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ double x;
+ const int short_pitch = pitch >> 1;
+ int i, j, k, l;
+ for (l = 0; l < 16; ++l) {
+ for (k = 0; k < 16; ++k) {
+ double s = 0;
+ for (i = 0; i < 16; ++i) {
+ for (j = 0; j < 16; ++j) {
+ x=cos(PI*j*(l+0.5)/16.0)*cos(PI*i*(k+0.5)/16.0)*input[i*16+j]/32;
+ if (i != 0)
+ x *= sqrt(2.0);
+ if (j != 0)
+ x *= sqrt(2.0);
+ s += x;
+ }
}
+ output[k*short_pitch+l] = (short)round(s);
}
- output[k*short_pitch+l] = (short)round(s);
}
}
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
#endif
static void butterfly_16x16_idct_1d(double input[16], double output[16]) {
- double step[16];
- double intermediate[16];
- double temp1, temp2;
-
-
- // step 1 and 2
- step[ 0] = input[0] + input[8];
- step[ 1] = input[0] - input[8];
-
- temp1 = input[4]*C12;
- temp2 = input[12]*C4;
-
- temp1 -= temp2;
- temp1 *= C8;
-
- step[ 2] = 2*(temp1);
-
- temp1 = input[4]*C4;
- temp2 = input[12]*C12;
- temp1 += temp2;
- temp1 = (temp1);
- temp1 *= C8;
- step[ 3] = 2*(temp1);
-
- temp1 = input[2]*C8;
- temp1 = 2*(temp1);
- temp2 = input[6] + input[10];
-
- step[ 4] = temp1 + temp2;
- step[ 5] = temp1 - temp2;
-
- temp1 = input[14]*C8;
- temp1 = 2*(temp1);
- temp2 = input[6] - input[10];
-
- step[ 6] = temp2 - temp1;
- step[ 7] = temp2 + temp1;
-
- // for odd input
- temp1 = input[3]*C12;
- temp2 = input[13]*C4;
- temp1 += temp2;
- temp1 = (temp1);
- temp1 *= C8;
- intermediate[ 8] = 2*(temp1);
-
- temp1 = input[3]*C4;
- temp2 = input[13]*C12;
- temp2 -= temp1;
- temp2 = (temp2);
- temp2 *= C8;
- intermediate[ 9] = 2*(temp2);
-
- intermediate[10] = 2*(input[9]*C8);
- intermediate[11] = input[15] - input[1];
- intermediate[12] = input[15] + input[1];
- intermediate[13] = 2*((input[7]*C8));
-
- temp1 = input[11]*C12;
- temp2 = input[5]*C4;
- temp2 -= temp1;
- temp2 = (temp2);
- temp2 *= C8;
- intermediate[14] = 2*(temp2);
-
- temp1 = input[11]*C4;
- temp2 = input[5]*C12;
- temp1 += temp2;
- temp1 = (temp1);
- temp1 *= C8;
- intermediate[15] = 2*(temp1);
-
- step[ 8] = intermediate[ 8] + intermediate[14];
- step[ 9] = intermediate[ 9] + intermediate[15];
- step[10] = intermediate[10] + intermediate[11];
- step[11] = intermediate[10] - intermediate[11];
- step[12] = intermediate[12] + intermediate[13];
- step[13] = intermediate[12] - intermediate[13];
- step[14] = intermediate[ 8] - intermediate[14];
- step[15] = intermediate[ 9] - intermediate[15];
-
- // step 3
- output[0] = step[ 0] + step[ 3];
- output[1] = step[ 1] + step[ 2];
- output[2] = step[ 1] - step[ 2];
- output[3] = step[ 0] - step[ 3];
-
- temp1 = step[ 4]*C14;
- temp2 = step[ 7]*C2;
- temp1 -= temp2;
- output[4] = (temp1);
-
- temp1 = step[ 4]*C2;
- temp2 = step[ 7]*C14;
- temp1 += temp2;
- output[7] = (temp1);
-
- temp1 = step[ 5]*C10;
- temp2 = step[ 6]*C6;
- temp1 -= temp2;
- output[5] = (temp1);
-
- temp1 = step[ 5]*C6;
- temp2 = step[ 6]*C10;
- temp1 += temp2;
- output[6] = (temp1);
-
- output[8] = step[ 8] + step[11];
- output[9] = step[ 9] + step[10];
- output[10] = step[ 9] - step[10];
- output[11] = step[ 8] - step[11];
- output[12] = step[12] + step[15];
- output[13] = step[13] + step[14];
- output[14] = step[13] - step[14];
- output[15] = step[12] - step[15];
-
- // output 4
- step[ 0] = output[0] + output[7];
- step[ 1] = output[1] + output[6];
- step[ 2] = output[2] + output[5];
- step[ 3] = output[3] + output[4];
- step[ 4] = output[3] - output[4];
- step[ 5] = output[2] - output[5];
- step[ 6] = output[1] - output[6];
- step[ 7] = output[0] - output[7];
-
- temp1 = output[8]*C7;
- temp2 = output[15]*C9;
- temp1 -= temp2;
- step[ 8] = (temp1);
-
- temp1 = output[9]*C11;
- temp2 = output[14]*C5;
- temp1 += temp2;
- step[ 9] = (temp1);
-
- temp1 = output[10]*C3;
- temp2 = output[13]*C13;
- temp1 -= temp2;
- step[10] = (temp1);
-
- temp1 = output[11]*C15;
- temp2 = output[12]*C1;
- temp1 += temp2;
- step[11] = (temp1);
-
- temp1 = output[11]*C1;
- temp2 = output[12]*C15;
- temp2 -= temp1;
- step[12] = (temp2);
-
- temp1 = output[10]*C13;
- temp2 = output[13]*C3;
- temp1 += temp2;
- step[13] = (temp1);
-
- temp1 = output[9]*C5;
- temp2 = output[14]*C11;
- temp2 -= temp1;
- step[14] = (temp2);
-
- temp1 = output[8]*C9;
- temp2 = output[15]*C7;
- temp1 += temp2;
- step[15] = (temp1);
-
- // step 5
- output[0] = (step[0] + step[15]);
- output[1] = (step[1] + step[14]);
- output[2] = (step[2] + step[13]);
- output[3] = (step[3] + step[12]);
- output[4] = (step[4] + step[11]);
- output[5] = (step[5] + step[10]);
- output[6] = (step[6] + step[ 9]);
- output[7] = (step[7] + step[ 8]);
-
- output[15] = (step[0] - step[15]);
- output[14] = (step[1] - step[14]);
- output[13] = (step[2] - step[13]);
- output[12] = (step[3] - step[12]);
- output[11] = (step[4] - step[11]);
- output[10] = (step[5] - step[10]);
- output[9] = (step[6] - step[ 9]);
- output[8] = (step[7] - step[ 8]);
+
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ double step[16];
+ double intermediate[16];
+ double temp1, temp2;
+
+
+ // step 1 and 2
+ step[ 0] = input[0] + input[8];
+ step[ 1] = input[0] - input[8];
+
+ temp1 = input[4]*C12;
+ temp2 = input[12]*C4;
+
+ temp1 -= temp2;
+ temp1 *= C8;
+
+ step[ 2] = 2*(temp1);
+
+ temp1 = input[4]*C4;
+ temp2 = input[12]*C12;
+ temp1 += temp2;
+ temp1 = (temp1);
+ temp1 *= C8;
+ step[ 3] = 2*(temp1);
+
+ temp1 = input[2]*C8;
+ temp1 = 2*(temp1);
+ temp2 = input[6] + input[10];
+
+ step[ 4] = temp1 + temp2;
+ step[ 5] = temp1 - temp2;
+
+ temp1 = input[14]*C8;
+ temp1 = 2*(temp1);
+ temp2 = input[6] - input[10];
+
+ step[ 6] = temp2 - temp1;
+ step[ 7] = temp2 + temp1;
+
+ // for odd input
+ temp1 = input[3]*C12;
+ temp2 = input[13]*C4;
+ temp1 += temp2;
+ temp1 = (temp1);
+ temp1 *= C8;
+ intermediate[ 8] = 2*(temp1);
+
+ temp1 = input[3]*C4;
+ temp2 = input[13]*C12;
+ temp2 -= temp1;
+ temp2 = (temp2);
+ temp2 *= C8;
+ intermediate[ 9] = 2*(temp2);
+
+ intermediate[10] = 2*(input[9]*C8);
+ intermediate[11] = input[15] - input[1];
+ intermediate[12] = input[15] + input[1];
+ intermediate[13] = 2*((input[7]*C8));
+
+ temp1 = input[11]*C12;
+ temp2 = input[5]*C4;
+ temp2 -= temp1;
+ temp2 = (temp2);
+ temp2 *= C8;
+ intermediate[14] = 2*(temp2);
+
+ temp1 = input[11]*C4;
+ temp2 = input[5]*C12;
+ temp1 += temp2;
+ temp1 = (temp1);
+ temp1 *= C8;
+ intermediate[15] = 2*(temp1);
+
+ step[ 8] = intermediate[ 8] + intermediate[14];
+ step[ 9] = intermediate[ 9] + intermediate[15];
+ step[10] = intermediate[10] + intermediate[11];
+ step[11] = intermediate[10] - intermediate[11];
+ step[12] = intermediate[12] + intermediate[13];
+ step[13] = intermediate[12] - intermediate[13];
+ step[14] = intermediate[ 8] - intermediate[14];
+ step[15] = intermediate[ 9] - intermediate[15];
+
+ // step 3
+ output[0] = step[ 0] + step[ 3];
+ output[1] = step[ 1] + step[ 2];
+ output[2] = step[ 1] - step[ 2];
+ output[3] = step[ 0] - step[ 3];
+
+ temp1 = step[ 4]*C14;
+ temp2 = step[ 7]*C2;
+ temp1 -= temp2;
+ output[4] = (temp1);
+
+ temp1 = step[ 4]*C2;
+ temp2 = step[ 7]*C14;
+ temp1 += temp2;
+ output[7] = (temp1);
+
+ temp1 = step[ 5]*C10;
+ temp2 = step[ 6]*C6;
+ temp1 -= temp2;
+ output[5] = (temp1);
+
+ temp1 = step[ 5]*C6;
+ temp2 = step[ 6]*C10;
+ temp1 += temp2;
+ output[6] = (temp1);
+
+ output[8] = step[ 8] + step[11];
+ output[9] = step[ 9] + step[10];
+ output[10] = step[ 9] - step[10];
+ output[11] = step[ 8] - step[11];
+ output[12] = step[12] + step[15];
+ output[13] = step[13] + step[14];
+ output[14] = step[13] - step[14];
+ output[15] = step[12] - step[15];
+
+ // output 4
+ step[ 0] = output[0] + output[7];
+ step[ 1] = output[1] + output[6];
+ step[ 2] = output[2] + output[5];
+ step[ 3] = output[3] + output[4];
+ step[ 4] = output[3] - output[4];
+ step[ 5] = output[2] - output[5];
+ step[ 6] = output[1] - output[6];
+ step[ 7] = output[0] - output[7];
+
+ temp1 = output[8]*C7;
+ temp2 = output[15]*C9;
+ temp1 -= temp2;
+ step[ 8] = (temp1);
+
+ temp1 = output[9]*C11;
+ temp2 = output[14]*C5;
+ temp1 += temp2;
+ step[ 9] = (temp1);
+
+ temp1 = output[10]*C3;
+ temp2 = output[13]*C13;
+ temp1 -= temp2;
+ step[10] = (temp1);
+
+ temp1 = output[11]*C15;
+ temp2 = output[12]*C1;
+ temp1 += temp2;
+ step[11] = (temp1);
+
+ temp1 = output[11]*C1;
+ temp2 = output[12]*C15;
+ temp2 -= temp1;
+ step[12] = (temp2);
+
+ temp1 = output[10]*C13;
+ temp2 = output[13]*C3;
+ temp1 += temp2;
+ step[13] = (temp1);
+
+ temp1 = output[9]*C5;
+ temp2 = output[14]*C11;
+ temp2 -= temp1;
+ step[14] = (temp2);
+
+ temp1 = output[8]*C9;
+ temp2 = output[15]*C7;
+ temp1 += temp2;
+ step[15] = (temp1);
+
+ // step 5
+ output[0] = (step[0] + step[15]);
+ output[1] = (step[1] + step[14]);
+ output[2] = (step[2] + step[13]);
+ output[3] = (step[3] + step[12]);
+ output[4] = (step[4] + step[11]);
+ output[5] = (step[5] + step[10]);
+ output[6] = (step[6] + step[ 9]);
+ output[7] = (step[7] + step[ 8]);
+
+ output[15] = (step[0] - step[15]);
+ output[14] = (step[1] - step[14]);
+ output[13] = (step[2] - step[13]);
+ output[12] = (step[3] - step[12]);
+ output[11] = (step[4] - step[11]);
+ output[10] = (step[5] - step[10]);
+ output[9] = (step[6] - step[ 9]);
+ output[8] = (step[7] - step[ 8]);
+ }
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
// Remove once an int version of iDCT is written
#if 0
void reference_16x16_idct_1d(double input[16], double output[16]) {
- const double kPi = 3.141592653589793238462643383279502884;
- const double kSqrt2 = 1.414213562373095048801688724209698;
- for (int k = 0; k < 16; k++) {
- output[k] = 0.0;
- for (int n = 0; n < 16; n++) {
- output[k] += input[n]*cos(kPi*(2*k+1)*n/32.0);
- if (n == 0)
- output[k] = output[k]/kSqrt2;
+
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ const double kPi = 3.141592653589793238462643383279502884;
+ const double kSqrt2 = 1.414213562373095048801688724209698;
+ for (int k = 0; k < 16; k++) {
+ output[k] = 0.0;
+ for (int n = 0; n < 16; n++) {
+ output[k] += input[n]*cos(kPi*(2*k+1)*n/32.0);
+ if (n == 0)
+ output[k] = output[k]/kSqrt2;
+ }
}
}
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
#endif
void vp8_short_idct16x16_c(short *input, short *output, int pitch) {
- double out[16*16], out2[16*16];
- const int short_pitch = pitch >> 1;
- int i, j;
- // First transform rows
- for (i = 0; i < 16; ++i) {
- double temp_in[16], temp_out[16];
- for (j = 0; j < 16; ++j)
- temp_in[j] = input[j + i*short_pitch];
- butterfly_16x16_idct_1d(temp_in, temp_out);
- for (j = 0; j < 16; ++j)
- out[j + i*16] = temp_out[j];
- }
- // Then transform columns
- for (i = 0; i < 16; ++i) {
- double temp_in[16], temp_out[16];
- for (j = 0; j < 16; ++j)
- temp_in[j] = out[j*16 + i];
- butterfly_16x16_idct_1d(temp_in, temp_out);
- for (j = 0; j < 16; ++j)
- out2[j*16 + i] = temp_out[j];
+
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ double out[16*16], out2[16*16];
+ const int short_pitch = pitch >> 1;
+ int i, j;
+ // First transform rows
+ for (i = 0; i < 16; ++i) {
+ double temp_in[16], temp_out[16];
+ for (j = 0; j < 16; ++j)
+ temp_in[j] = input[j + i*short_pitch];
+ butterfly_16x16_idct_1d(temp_in, temp_out);
+ for (j = 0; j < 16; ++j)
+ out[j + i*16] = temp_out[j];
+ }
+ // Then transform columns
+ for (i = 0; i < 16; ++i) {
+ double temp_in[16], temp_out[16];
+ for (j = 0; j < 16; ++j)
+ temp_in[j] = out[j*16 + i];
+ butterfly_16x16_idct_1d(temp_in, temp_out);
+ for (j = 0; j < 16; ++j)
+ out2[j*16 + i] = temp_out[j];
+ }
+ for (i = 0; i < 16*16; ++i)
+ output[i] = round(out2[i]/128);
}
- for (i = 0; i < 16*16; ++i)
- output[i] = round(out2[i]/128);
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
#endif
#include <math.h>
#include "vpx_ports/config.h"
#include "vp8/common/idct.h"
+#include "vp8/common/systemdependent.h"
#if CONFIG_HYBRIDTRANSFORM || CONFIG_HYBRIDTRANSFORM8X8 || CONFIG_HYBRIDTRANSFORM16X16
#if CONFIG_HYBRIDTRANSFORM8X8 || CONFIG_HYBRIDTRANSFORM || CONFIG_HYBRIDTRANSFORM16X16
void vp8_fht_c(short *input, short *output, int pitch,
TX_TYPE tx_type, int tx_dim) {
- int i, j, k;
- float bufa[256], bufb[256]; // buffers are for floating-point test purpose
- // the implementation could be simplified in
- // conjunction with integer transform
- short *ip = input;
- short *op = output;
-
- float *pfa = &bufa[0];
- float *pfb = &bufb[0];
-
- // pointers to vertical and horizontal transforms
- float *ptv, *pth;
-
- // load and convert residual array into floating-point
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- pfa[i] = (float)ip[i];
- }
- pfa += tx_dim;
- ip += pitch / 2;
- }
-
- // vertical transformation
- pfa = &bufa[0];
- pfb = &bufb[0];
-
- switch(tx_type) {
- case ADST_ADST :
- case ADST_DCT :
- ptv = (tx_dim == 4) ? &adst_4[0] :
- ((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
- break;
-
- default :
- ptv = (tx_dim == 4) ? &dct_4[0] :
- ((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
- break;
- }
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- pfb[i] = 0;
- for(k = 0; k < tx_dim; k++) {
- pfb[i] += ptv[k] * pfa[(k * tx_dim)];
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ int i, j, k;
+ float bufa[256], bufb[256]; // buffers are for floating-point test purpose
+ // the implementation could be simplified in
+ // conjunction with integer transform
+ short *ip = input;
+ short *op = output;
+
+ float *pfa = &bufa[0];
+ float *pfb = &bufb[0];
+
+ // pointers to vertical and horizontal transforms
+ float *ptv, *pth;
+
+ // load and convert residual array into floating-point
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ pfa[i] = (float)ip[i];
}
- pfa += 1;
+ pfa += tx_dim;
+ ip += pitch / 2;
}
- pfb += tx_dim;
- ptv += tx_dim;
+
+ // vertical transformation
pfa = &bufa[0];
- }
+ pfb = &bufb[0];
- // horizontal transformation
- pfa = &bufa[0];
- pfb = &bufb[0];
-
- switch(tx_type) {
- case ADST_ADST :
- case DCT_ADST :
- pth = (tx_dim == 4) ? &adst_4[0] :
- ((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
- break;
-
- default :
- pth = (tx_dim == 4) ? &dct_4[0] :
- ((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
- break;
- }
+ switch(tx_type) {
+ case ADST_ADST :
+ case ADST_DCT :
+ ptv = (tx_dim == 4) ? &adst_4[0] :
+ ((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
+ break;
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- pfa[i] = 0;
- for(k = 0; k < tx_dim; k++) {
- pfa[i] += pfb[k] * pth[k];
+ default :
+ ptv = (tx_dim == 4) ? &dct_4[0] :
+ ((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
+ break;
+ }
+
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ pfb[i] = 0;
+ for(k = 0; k < tx_dim; k++) {
+ pfb[i] += ptv[k] * pfa[(k * tx_dim)];
+ }
+ pfa += 1;
}
- pth += tx_dim;
+ pfb += tx_dim;
+ ptv += tx_dim;
+ pfa = &bufa[0];
}
- pfa += tx_dim;
- pfb += tx_dim;
- // pth -= tx_dim * tx_dim;
+ // horizontal transformation
+ pfa = &bufa[0];
+ pfb = &bufb[0];
switch(tx_type) {
case ADST_ADST :
((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
break;
}
- }
- // convert to short integer format and load BLOCKD buffer
- op = output ;
- pfa = &bufa[0] ;
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ pfa[i] = 0;
+ for(k = 0; k < tx_dim; k++) {
+ pfa[i] += pfb[k] * pth[k];
+ }
+ pth += tx_dim;
+ }
- for(j = 0; j < tx_dim; j++) {
- for(i = 0; i < tx_dim; i++) {
- op[i] = (pfa[i] > 0 ) ? (short)( 8 * pfa[i] + 0.49) :
- -(short)(- 8 * pfa[i] + 0.49);
+ pfa += tx_dim;
+ pfb += tx_dim;
+ // pth -= tx_dim * tx_dim;
+
+ switch(tx_type) {
+ case ADST_ADST :
+ case DCT_ADST :
+ pth = (tx_dim == 4) ? &adst_4[0] :
+ ((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
+ break;
+
+ default :
+ pth = (tx_dim == 4) ? &dct_4[0] :
+ ((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
+ break;
+ }
+ }
+
+ // convert to short integer format and load BLOCKD buffer
+ op = output ;
+ pfa = &bufa[0] ;
+
+ for(j = 0; j < tx_dim; j++) {
+ for(i = 0; i < tx_dim; i++) {
+ op[i] = (pfa[i] > 0 ) ? (short)( 8 * pfa[i] + 0.49) :
+ -(short)(- 8 * pfa[i] + 0.49);
+ }
+ op += tx_dim;
+ pfa += tx_dim;
}
- op += tx_dim;
- pfa += tx_dim;
}
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
#endif
static const double C15 = 0.098017140329561;
static void dct16x16_1d(double input[16], double output[16]) {
- double step[16];
- double intermediate[16];
- double temp1, temp2;
-
- // step 1
- step[ 0] = input[0] + input[15];
- step[ 1] = input[1] + input[14];
- step[ 2] = input[2] + input[13];
- step[ 3] = input[3] + input[12];
- step[ 4] = input[4] + input[11];
- step[ 5] = input[5] + input[10];
- step[ 6] = input[6] + input[ 9];
- step[ 7] = input[7] + input[ 8];
- step[ 8] = input[7] - input[ 8];
- step[ 9] = input[6] - input[ 9];
- step[10] = input[5] - input[10];
- step[11] = input[4] - input[11];
- step[12] = input[3] - input[12];
- step[13] = input[2] - input[13];
- step[14] = input[1] - input[14];
- step[15] = input[0] - input[15];
-
- // step 2
- output[0] = step[0] + step[7];
- output[1] = step[1] + step[6];
- output[2] = step[2] + step[5];
- output[3] = step[3] + step[4];
- output[4] = step[3] - step[4];
- output[5] = step[2] - step[5];
- output[6] = step[1] - step[6];
- output[7] = step[0] - step[7];
-
- temp1 = step[ 8]*C7;
- temp2 = step[15]*C9;
- output[ 8] = temp1 + temp2;
-
- temp1 = step[ 9]*C11;
- temp2 = step[14]*C5;
- output[ 9] = temp1 - temp2;
-
- temp1 = step[10]*C3;
- temp2 = step[13]*C13;
- output[10] = temp1 + temp2;
-
- temp1 = step[11]*C15;
- temp2 = step[12]*C1;
- output[11] = temp1 - temp2;
-
- temp1 = step[11]*C1;
- temp2 = step[12]*C15;
- output[12] = temp2 + temp1;
-
- temp1 = step[10]*C13;
- temp2 = step[13]*C3;
- output[13] = temp2 - temp1;
-
- temp1 = step[ 9]*C5;
- temp2 = step[14]*C11;
- output[14] = temp2 + temp1;
-
- temp1 = step[ 8]*C9;
- temp2 = step[15]*C7;
- output[15] = temp2 - temp1;
-
- // step 3
- step[ 0] = output[0] + output[3];
- step[ 1] = output[1] + output[2];
- step[ 2] = output[1] - output[2];
- step[ 3] = output[0] - output[3];
-
- temp1 = output[4]*C14;
- temp2 = output[7]*C2;
- step[ 4] = temp1 + temp2;
-
- temp1 = output[5]*C10;
- temp2 = output[6]*C6;
- step[ 5] = temp1 + temp2;
-
- temp1 = output[5]*C6;
- temp2 = output[6]*C10;
- step[ 6] = temp2 - temp1;
-
- temp1 = output[4]*C2;
- temp2 = output[7]*C14;
- step[ 7] = temp2 - temp1;
-
- step[ 8] = output[ 8] + output[11];
- step[ 9] = output[ 9] + output[10];
- step[10] = output[ 9] - output[10];
- step[11] = output[ 8] - output[11];
-
- step[12] = output[12] + output[15];
- step[13] = output[13] + output[14];
- step[14] = output[13] - output[14];
- step[15] = output[12] - output[15];
-
- // step 4
- output[ 0] = (step[ 0] + step[ 1]);
- output[ 8] = (step[ 0] - step[ 1]);
-
- temp1 = step[2]*C12;
- temp2 = step[3]*C4;
- temp1 = temp1 + temp2;
- output[ 4] = 2*(temp1*C8);
-
- temp1 = step[2]*C4;
- temp2 = step[3]*C12;
- temp1 = temp2 - temp1;
- output[12] = 2*(temp1*C8);
-
- output[ 2] = 2*((step[4] + step[ 5])*C8);
- output[14] = 2*((step[7] - step[ 6])*C8);
-
- temp1 = step[4] - step[5];
- temp2 = step[6] + step[7];
- output[ 6] = (temp1 + temp2);
- output[10] = (temp1 - temp2);
-
- intermediate[8] = step[8] + step[14];
- intermediate[9] = step[9] + step[15];
-
- temp1 = intermediate[8]*C12;
- temp2 = intermediate[9]*C4;
- temp1 = temp1 - temp2;
- output[3] = 2*(temp1*C8);
-
- temp1 = intermediate[8]*C4;
- temp2 = intermediate[9]*C12;
- temp1 = temp2 + temp1;
- output[13] = 2*(temp1*C8);
-
- output[ 9] = 2*((step[10] + step[11])*C8);
-
- intermediate[11] = step[10] - step[11];
- intermediate[12] = step[12] + step[13];
- intermediate[13] = step[12] - step[13];
- intermediate[14] = step[ 8] - step[14];
- intermediate[15] = step[ 9] - step[15];
-
- output[15] = (intermediate[11] + intermediate[12]);
- output[ 1] = -(intermediate[11] - intermediate[12]);
-
- output[ 7] = 2*(intermediate[13]*C8);
-
- temp1 = intermediate[14]*C12;
- temp2 = intermediate[15]*C4;
- temp1 = temp1 - temp2;
- output[11] = -2*(temp1*C8);
-
- temp1 = intermediate[14]*C4;
- temp2 = intermediate[15]*C12;
- temp1 = temp2 + temp1;
- output[ 5] = 2*(temp1*C8);
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
+ double step[16];
+ double intermediate[16];
+ double temp1, temp2;
+
+ // step 1
+ step[ 0] = input[0] + input[15];
+ step[ 1] = input[1] + input[14];
+ step[ 2] = input[2] + input[13];
+ step[ 3] = input[3] + input[12];
+ step[ 4] = input[4] + input[11];
+ step[ 5] = input[5] + input[10];
+ step[ 6] = input[6] + input[ 9];
+ step[ 7] = input[7] + input[ 8];
+ step[ 8] = input[7] - input[ 8];
+ step[ 9] = input[6] - input[ 9];
+ step[10] = input[5] - input[10];
+ step[11] = input[4] - input[11];
+ step[12] = input[3] - input[12];
+ step[13] = input[2] - input[13];
+ step[14] = input[1] - input[14];
+ step[15] = input[0] - input[15];
+
+ // step 2
+ output[0] = step[0] + step[7];
+ output[1] = step[1] + step[6];
+ output[2] = step[2] + step[5];
+ output[3] = step[3] + step[4];
+ output[4] = step[3] - step[4];
+ output[5] = step[2] - step[5];
+ output[6] = step[1] - step[6];
+ output[7] = step[0] - step[7];
+
+ temp1 = step[ 8]*C7;
+ temp2 = step[15]*C9;
+ output[ 8] = temp1 + temp2;
+
+ temp1 = step[ 9]*C11;
+ temp2 = step[14]*C5;
+ output[ 9] = temp1 - temp2;
+
+ temp1 = step[10]*C3;
+ temp2 = step[13]*C13;
+ output[10] = temp1 + temp2;
+
+ temp1 = step[11]*C15;
+ temp2 = step[12]*C1;
+ output[11] = temp1 - temp2;
+
+ temp1 = step[11]*C1;
+ temp2 = step[12]*C15;
+ output[12] = temp2 + temp1;
+
+ temp1 = step[10]*C13;
+ temp2 = step[13]*C3;
+ output[13] = temp2 - temp1;
+
+ temp1 = step[ 9]*C5;
+ temp2 = step[14]*C11;
+ output[14] = temp2 + temp1;
+
+ temp1 = step[ 8]*C9;
+ temp2 = step[15]*C7;
+ output[15] = temp2 - temp1;
+
+ // step 3
+ step[ 0] = output[0] + output[3];
+ step[ 1] = output[1] + output[2];
+ step[ 2] = output[1] - output[2];
+ step[ 3] = output[0] - output[3];
+
+ temp1 = output[4]*C14;
+ temp2 = output[7]*C2;
+ step[ 4] = temp1 + temp2;
+
+ temp1 = output[5]*C10;
+ temp2 = output[6]*C6;
+ step[ 5] = temp1 + temp2;
+
+ temp1 = output[5]*C6;
+ temp2 = output[6]*C10;
+ step[ 6] = temp2 - temp1;
+
+ temp1 = output[4]*C2;
+ temp2 = output[7]*C14;
+ step[ 7] = temp2 - temp1;
+
+ step[ 8] = output[ 8] + output[11];
+ step[ 9] = output[ 9] + output[10];
+ step[10] = output[ 9] - output[10];
+ step[11] = output[ 8] - output[11];
+
+ step[12] = output[12] + output[15];
+ step[13] = output[13] + output[14];
+ step[14] = output[13] - output[14];
+ step[15] = output[12] - output[15];
+
+ // step 4
+ output[ 0] = (step[ 0] + step[ 1]);
+ output[ 8] = (step[ 0] - step[ 1]);
+
+ temp1 = step[2]*C12;
+ temp2 = step[3]*C4;
+ temp1 = temp1 + temp2;
+ output[ 4] = 2*(temp1*C8);
+
+ temp1 = step[2]*C4;
+ temp2 = step[3]*C12;
+ temp1 = temp2 - temp1;
+ output[12] = 2*(temp1*C8);
+
+ output[ 2] = 2*((step[4] + step[ 5])*C8);
+ output[14] = 2*((step[7] - step[ 6])*C8);
+
+ temp1 = step[4] - step[5];
+ temp2 = step[6] + step[7];
+ output[ 6] = (temp1 + temp2);
+ output[10] = (temp1 - temp2);
+
+ intermediate[8] = step[8] + step[14];
+ intermediate[9] = step[9] + step[15];
+
+ temp1 = intermediate[8]*C12;
+ temp2 = intermediate[9]*C4;
+ temp1 = temp1 - temp2;
+ output[3] = 2*(temp1*C8);
+
+ temp1 = intermediate[8]*C4;
+ temp2 = intermediate[9]*C12;
+ temp1 = temp2 + temp1;
+ output[13] = 2*(temp1*C8);
+
+ output[ 9] = 2*((step[10] + step[11])*C8);
+
+ intermediate[11] = step[10] - step[11];
+ intermediate[12] = step[12] + step[13];
+ intermediate[13] = step[12] - step[13];
+ intermediate[14] = step[ 8] - step[14];
+ intermediate[15] = step[ 9] - step[15];
+
+ output[15] = (intermediate[11] + intermediate[12]);
+ output[ 1] = -(intermediate[11] - intermediate[12]);
+
+ output[ 7] = 2*(intermediate[13]*C8);
+
+ temp1 = intermediate[14]*C12;
+ temp2 = intermediate[15]*C4;
+ temp1 = temp1 - temp2;
+ output[11] = -2*(temp1*C8);
+
+ temp1 = intermediate[14]*C4;
+ temp2 = intermediate[15]*C12;
+ temp1 = temp2 + temp1;
+ output[ 5] = 2*(temp1*C8);
+ }
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
void vp8_short_fdct16x16_c(short *input, short *out, int pitch) {
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
+ {
int shortpitch = pitch >> 1;
int i, j;
double output[256];
// Scale by some magic number
for (i = 0; i < 256; i++)
out[i] = (short)round(output[i]/2);
+ }
+ vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
#endif
projects / libvpx / commitdiff