Commit 8a9e4e8a authored by Yunqing Wang's avatar Yunqing Wang
Browse files

Convert the transforms to integer forms.

Converted the forward and inverse transforms to integer forms.

Modify #define TEST_INT 1/0
in the code to call integer/float version of transforms.

The tests showed that average OVERALL PSNR loss was less than 0.1%.

Change-Id: I1dfa4eeab6412597e3b970ce299cf0e116a917e6
parent fc6fdf98
......@@ -110,7 +110,7 @@ extern prototype_second_order(vp8_short_inv_walsh4x4_1_lossless_c);
#endif
#include "vp8/common/blockd.h"
void vp8_ihtllm_c(short *input, short *output, int pitch,
void vp8_ihtllm_c(const int16_t *input, int16_t *output, int pitch,
TX_TYPE tx_type, int tx_dim);
typedef prototype_idct((*vp8_idct_fn_t));
......
......@@ -28,6 +28,7 @@
#include "vp8/common/blockd.h"
#include <assert.h>
#include <math.h>
static const int cospi8sqrt2minus1 = 20091;
......@@ -88,6 +89,58 @@ float iadst_8[64] = {
0.326790388032145, -0.255357107325375, 0.175227946595736, -0.089131608307532
};
const int16_t idct_i4[16] = {
8192, 10703, 8192, 4433,
8192, 4433, -8192, -10703,
8192, -4433, -8192, 10703,
8192, -10703, 8192, -4433
};
const int16_t iadst_i4[16] = {
3736, 9459, 10757, 7021,
7021, 9459, -3736, -10757,
9459, 0, -9459, 9459,
10757, -9459, 7021, -3736
};
const int16_t idct_i8[64] = {
5793, 8035, 7568, 6811,
5793, 4551, 3135, 1598,
5793, 6811, 3135, -1598,
-5793, -8035, -7568, -4551,
5793, 4551, -3135, -8035,
-5793, 1598, 7568, 6811,
5793, 1598, -7568, -4551,
5793, 6811, -3135, -8035,
5793, -1598, -7568, 4551,
5793, -6811, -3135, 8035,
5793, -4551, -3135, 8035,
-5793, -1598, 7568, -6811,
5793, -6811, 3135, 1598,
-5793, 8035, -7568, 4551,
5793, -8035, 7568, -6811,
5793, -4551, 3135, -1598
};
const int16_t iadst_i8[64] = {
1460, 4184, 6342, 7644,
7914, 7114, 5354, 2871,
2871, 7114, 7644, 4184,
-1460, -6342, -7914, -5354,
4184, 7914, 2871, -5354,
-7644, -1460, 6342, 7114,
5354, 6342, -4184, -7114,
2871, 7644, -1460, -7914,
6342, 2871, -7914, 1460,
7114, -5354, -4184, 7644,
7114, -1460, -5354, 7914,
-4184, -2871, 7644, -6342,
7644, -5354, 1460, 2871,
-6342, 7914, -7114, 4184,
7914, -7644, 7114, -6342,
5354, -4184, 2871, -1460
};
float idct_16[256] = {
0.250000, 0.351851, 0.346760, 0.338330, 0.326641, 0.311806, 0.293969, 0.273300,
0.250000, 0.224292, 0.196424, 0.166664, 0.135299, 0.102631, 0.068975, 0.034654,
......@@ -158,22 +211,94 @@ float iadst_16[256] = {
0.240255, -0.215215, 0.188227, -0.159534, 0.129396, -0.098087, 0.065889, -0.033094
};
void vp8_ihtllm_c(short *input, short *output, int pitch,
TX_TYPE tx_type, int tx_dim) {
const int16_t idct_i16[256] = {
4096, 5765, 5681, 5543, 5352, 5109, 4816, 4478,
4096, 3675, 3218, 2731, 2217, 1682, 1130, 568,
4096, 5543, 4816, 3675, 2217, 568, -1130, -2731,
-4096, -5109, -5681, -5765, -5352, -4478, -3218, -1682,
4096, 5109, 3218, 568, -2217, -4478, -5681, -5543,
-4096, -1682, 1130, 3675, 5352, 5765, 4816, 2731,
4096, 4478, 1130, -2731, -5352, -5543, -3218, 568,
4096, 5765, 4816, 1682, -2217, -5109, -5681, -3675,
4096, 3675, -1130, -5109, -5352, -1682, 3218, 5765,
4096, -568, -4816, -5543, -2217, 2731, 5681, 4478,
4096, 2731, -3218, -5765, -2217, 3675, 5681, 1682,
-4096, -5543, -1130, 4478, 5352, 568, -4816, -5109,
4096, 1682, -4816, -4478, 2217, 5765, 1130, -5109,
-4096, 2731, 5681, 568, -5352, -3675, 3218, 5543,
4096, 568, -5681, -1682, 5352, 2731, -4816, -3675,
4096, 4478, -3218, -5109, 2217, 5543, -1130, -5765,
4096, -568, -5681, 1682, 5352, -2731, -4816, 3675,
4096, -4478, -3218, 5109, 2217, -5543, -1130, 5765,
4096, -1682, -4816, 4478, 2217, -5765, 1130, 5109,
-4096, -2731, 5681, -568, -5352, 3675, 3218, -5543,
4096, -2731, -3218, 5765, -2217, -3675, 5681, -1682,
-4096, 5543, -1130, -4478, 5352, -568, -4816, 5109,
4096, -3675, -1130, 5109, -5352, 1682, 3218, -5765,
4096, 568, -4816, 5543, -2217, -2731, 5681, -4478,
4096, -4478, 1130, 2731, -5352, 5543, -3218, -568,
4096, -5765, 4816, -1682, -2217, 5109, -5681, 3675,
4096, -5109, 3218, -568, -2217, 4478, -5681, 5543,
-4096, 1682, 1130, -3675, 5352, -5765, 4816, -2731,
4096, -5543, 4816, -3675, 2217, -568, -1130, 2731,
-4096, 5109, -5681, 5765, -5352, 4478, -3218, 1682,
4096, -5765, 5681, -5543, 5352, -5109, 4816, -4478,
4096, -3675, 3218, -2731, 2217, -1682, 1130, -568
};
vp8_clear_system_state(); // Make it simd safe : __asm emms;
const int16_t iadst_i16[256] = {
542, 1607, 2614, 3526, 4311, 4940, 5390, 5646,
5698, 5543, 5189, 4646, 3936, 3084, 2120, 1080,
1080, 3084, 4646, 5543, 5646, 4940, 3526, 1607,
-542, -2614, -4311, -5390, -5698, -5189, -3936, -2120,
1607, 4311, 5646, 5189, 3084, 0, -3084, -5189,
-5646, -4311, -1607, 1607, 4311, 5646, 5189, 3084,
2120, 5189, 5390, 2614, -1607, -4940, -5543, -3084,
1080, 4646, 5646, 3526, -542, -4311, -5698, -3936,
2614, 5646, 3936, -1080, -5189, -4940, -542, 4311,
5543, 2120, -3084, -5698, -3526, 1607, 5390, 4646,
3084, 5646, 1607, -4311, -5189, 0, 5189, 4311,
-1607, -5646, -3084, 3084, 5646, 1607, -4311, -5189,
3526, 5189, -1080, -5698, -1607, 4940, 3936, -3084,
-5390, 542, 5646, 2120, -4646, -4311, 2614, 5543,
3936, 4311, -3526, -4646, 3084, 4940, -2614, -5189,
2120, 5390, -1607, -5543, 1080, 5646, -542, -5698,
4311, 3084, -5189, -1607, 5646, 0, -5646, 1607,
5189, -3084, -4311, 4311, 3084, -5189, -1607, 5646,
4646, 1607, -5698, 2120, 4311, -4940, -1080, 5646,
-2614, -3936, 5189, 542, -5543, 3084, 3526, -5390,
4940, 0, -4940, 4940, 0, -4940, 4940, 0,
-4940, 4940, 0, -4940, 4940, 0, -4940, 4940,
5189, -1607, -3084, 5646, -4311, 0, 4311, -5646,
3084, 1607, -5189, 5189, -1607, -3084, 5646, -4311,
5390, -3084, -542, 3936, -5646, 4940, -2120, -1607,
4646, -5698, 4311, -1080, -2614, 5189, -5543, 3526,
5543, -4311, 2120, 542, -3084, 4940, -5698, 5189,
-3526, 1080, 1607, -3936, 5390, -5646, 4646, -2614,
5646, -5189, 4311, -3084, 1607, 0, -1607, 3084,
-4311, 5189, -5646, 5646, -5189, 4311, -3084, 1607,
5698, -5646, 5543, -5390, 5189, -4940, 4646, -4311,
3936, -3526, 3084, -2614, 2120, -1607, 1080, -542
};
/* For test */
#define TEST_INT 1
#if TEST_INT
#define vp8_ihtllm_int_c vp8_ihtllm_c
#else
#define vp8_ihtllm_float_c vp8_ihtllm_c
#endif
void vp8_ihtllm_float_c(const int16_t *input, int16_t *output, int pitch,
TX_TYPE tx_type, int 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;
float bufa[256], bufb[256]; // buffers are for floating-point test purpose
// the implementation could be simplified in
// conjunction with integer transform
const int16_t *ip = input;
int16_t *op = output;
int shortpitch = pitch >> 1;
float *pfa = &bufa[0];
......@@ -272,8 +397,8 @@ void vp8_ihtllm_c(short *input, short *output, int pitch,
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[i] = (pfa[i] > 0 ) ? (int16_t)( pfa[i] / 8 + 0.49) :
-(int16_t)( - pfa[i] / 8 + 0.49);
}
op += shortpitch;
......@@ -283,6 +408,90 @@ void vp8_ihtllm_c(short *input, short *output, int pitch,
vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
/* Converted the transforms to integer form. */
#define VERTICAL_SHIFT 14 //16
#define VERTICAL_ROUNDING ((1 << (VERTICAL_SHIFT - 1)) - 1)
#define HORIZONTAL_SHIFT 17 //15
#define HORIZONTAL_ROUNDING ((1 << (HORIZONTAL_SHIFT - 1)) - 1)
void vp8_ihtllm_int_c(const int16_t *input, int16_t *output, int pitch,
TX_TYPE tx_type, int tx_dim) {
int i, j, k;
int16_t imbuf[256];
const int16_t *ip = input;
int16_t *op = output;
int16_t *im = &imbuf[0];
/* pointers to vertical and horizontal transforms. */
const int16_t *ptv = NULL, *pth = NULL;
int shortpitch = pitch >> 1;
switch (tx_type) {
case ADST_ADST :
ptv = pth = (tx_dim == 4) ? &iadst_i4[0]
: ((tx_dim == 8) ? &iadst_i8[0]
: &iadst_i16[0]);
break;
case ADST_DCT :
ptv = (tx_dim == 4) ? &iadst_i4[0]
: ((tx_dim == 8) ? &iadst_i8[0] : &iadst_i16[0]);
pth = (tx_dim == 4) ? &idct_i4[0]
: ((tx_dim == 8) ? &idct_i8[0] : &idct_i16[0]);
break;
case DCT_ADST :
ptv = (tx_dim == 4) ? &idct_i4[0]
: ((tx_dim == 8) ? &idct_i8[0] : &idct_i16[0]);
pth = (tx_dim == 4) ? &iadst_i4[0]
: ((tx_dim == 8) ? &iadst_i8[0] : &iadst_i16[0]);
break;
case DCT_DCT :
ptv = pth = (tx_dim == 4) ? &idct_i4[0]
: ((tx_dim == 8) ? &idct_i8[0] : &idct_i16[0]);
break;
default:
assert(0);
break;
}
/* vertical transformation */
for (j = 0; j < tx_dim; j++) {
for (i = 0; i < tx_dim; i++) {
int temp = 0;
for (k = 0; k < tx_dim; k++) {
temp += ptv[k] * ip[(k * tx_dim)];
}
im[i] = (int16_t)((temp + VERTICAL_ROUNDING) >> VERTICAL_SHIFT);
ip++;
}
im += tx_dim; //16
ptv += tx_dim;
ip = input;
}
/* horizontal transformation */
im = &imbuf[0];
for (j = 0; j < tx_dim; j++) {
const int16_t *pthc = pth;
for (i = 0; i < tx_dim; i++) {
int temp = 0;
for (k = 0; k < tx_dim; k++) {
temp += im[k] * pthc[k];
}
op[i] = (int16_t)((temp + HORIZONTAL_ROUNDING) >> HORIZONTAL_SHIFT);
pthc += tx_dim;
}
im += tx_dim; //16
op += shortpitch;
}
}
void vp8_short_idct4x4llm_c(short *input, short *output, int pitch) {
int i;
int a1, b1, c1, d1;
......
......@@ -9,6 +9,7 @@
*/
#include <assert.h>
#include <math.h>
#include "vpx_ports/config.h"
#include "vp8/common/idct.h"
......@@ -70,6 +71,59 @@ float adst_8[64] = {
0.466553967085785, -0.387095214016348, 0.255357107325376, -0.089131608307532
};
/* Converted the transforms to integers. */
const int16_t dct_i4[16] = {
16384, 16384, 16384, 16384,
21407, 8867, -8867, -21407,
16384, -16384, -16384, 16384,
8867, -21407, 21407, -8867
};
const int16_t adst_i4[16] = {
7472, 14042, 18919, 21513,
18919, 18919, 0, -18919,
21513, -7472, -18919, 14042,
14042, -21513, 18919, -7472
};
const int16_t dct_i8[64] = {
11585, 11585, 11585, 11585,
11585, 11585, 11585, 11585,
16069, 13623, 9102, 3196,
-3196, -9102, -13623, -16069,
15137, 6270, -6270, -15137,
-15137, -6270, 6270, 15137,
13623, -3196, -16069, -9102,
9102, 16069, 3196, -13623,
11585, -11585, -11585, 11585,
11585, -11585, -11585, 11585,
9102, -16069, 3196, 13623,
-13623, -3196, 16069, -9102,
6270, -15137, 15137, -6270,
-6270, 15137, -15137, 6270,
3196, -9102, 13623, -16069,
16069, -13623, 9102, -3196
};
const int16_t adst_i8[64] = {
2921, 5742, 8368, 10708,
12684, 14228, 15288, 15827,
8368, 14228, 15827, 12684,
5742, -2921, -10708, -15288,
12684, 15288, 5742, -8368,
-15827, -10708, 2921, 14228,
15288, 8368, -10708, -14228,
2921, 15827, 5742, -12684,
15827, -2921, -15288, 5742,
14228, -8368, -12684, 10708,
14228, -12684, -2921, 15288,
-10708, -5742, 15827, -8368,
10708, -15827, 12684, -2921,
-8368, 15288, -14228, 5742,
5742, -10708, 14228, -15827,
15288, -12684, 8368, -2921
};
float dct_16[256] = {
0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000,
0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000,
......@@ -140,6 +194,77 @@ float adst_16[256] = {
0.344612, -0.329007, 0.301511, -0.263118, 0.215215, -0.159534, 0.098087, -0.033094
};
/* Converted the transforms to integers. */
const int16_t dct_i16[256] = {
8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
11529, 11086, 10217, 8955, 7350, 5461, 3363, 1136,
-1136, -3363, -5461, -7350, -8955, -10217, -11086, -11529,
11363, 9633, 6436, 2260, -2260, -6436, -9633, -11363,
-11363, -9633, -6436, -2260, 2260, 6436, 9633, 11363,
11086, 7350, 1136, -5461, -10217, -11529, -8955, -3363,
3363, 8955, 11529, 10217, 5461, -1136, -7350, -11086,
10703, 4433, -4433, -10703, -10703, -4433, 4433, 10703,
10703, 4433, -4433, -10703, -10703, -4433, 4433, 10703,
10217, 1136, -8955, -11086, -3363, 7350, 11529, 5461,
-5461, -11529, -7350, 3363, 11086, 8955, -1136, -10217,
9633, -2260, -11363, -6436, 6436, 11363, 2260, -9633,
-9633, 2260, 11363, 6436, -6436, -11363, -2260, 9633,
8955, -5461, -11086, 1136, 11529, 3363, -10217, -7350,
7350, 10217, -3363, -11529, -1136, 11086, 5461, -8955,
8192, -8192, -8192, 8192, 8192, -8192, -8192, 8192,
8192, -8192, -8192, 8192, 8192, -8192, -8192, 8192,
7350, -10217, -3363, 11529, -1136, -11086, 5461, 8955,
-8955, -5461, 11086, 1136, -11529, 3363, 10217, -7350,
6436, -11363, 2260, 9633, -9633, -2260, 11363, -6436,
-6436, 11363, -2260, -9633, 9633, 2260, -11363, 6436,
5461, -11529, 7350, 3363, -11086, 8955, 1136, -10217,
10217, -1136, -8955, 11086, -3363, -7350, 11529, -5461,
4433, -10703, 10703, -4433, -4433, 10703, -10703, 4433,
4433, -10703, 10703, -4433, -4433, 10703, -10703, 4433,
3363, -8955, 11529, -10217, 5461, 1136, -7350, 11086,
-11086, 7350, -1136, -5461, 10217, -11529, 8955, -3363,
2260, -6436, 9633, -11363, 11363, -9633, 6436, -2260,
-2260, 6436, -9633, 11363, -11363, 9633, -6436, 2260,
1136, -3363, 5461, -7350, 8955, -10217, 11086, -11529,
11529, -11086, 10217, -8955, 7350, -5461, 3363, -1136
};
const int16_t adst_i16[256] = {
1084, 2159, 3214, 4240, 5228, 6168, 7052, 7873,
8622, 9293, 9880, 10377, 10781, 11087, 11292, 11395,
3214, 6168, 8622, 10377, 11292, 11292, 10377, 8622,
6168, 3214, 0, -3214, -6168, -8622, -10377, -11292,
5228, 9293, 11292, 10781, 7873, 3214, -2159, -7052,
-10377, -11395, -9880, -6168, -1084, 4240, 8622, 11087,
7052, 11087, 10377, 5228, -2159, -8622, -11395, -9293,
-3214, 4240, 9880, 11292, 7873, 1084, -6168, -10781,
8622, 11292, 6168, -3214, -10377, -10377, -3214, 6168,
11292, 8622, 0, -8622, -11292, -6168, 3214, 10377,
9880, 9880, 0, -9880, -9880, 0, 9880, 9880,
0, -9880, -9880, 0, 9880, 9880, 0, -9880,
10781, 7052, -6168, -11087, -1084, 10377, 7873, -5228,
-11292, -2159, 9880, 8622, -4240, -11395, -3214, 9293,
11292, 3214, -10377, -6168, 8622, 8622, -6168, -10377,
3214, 11292, 0, -11292, -3214, 10377, 6168, -8622,
11395, -1084, -11292, 2159, 11087, -3214, -10781, 4240,
10377, -5228, -9880, 6168, 9293, -7052, -8622, 7873,
11087, -5228, -8622, 9293, 4240, -11292, 1084, 10781,
-6168, -7873, 9880, 3214, -11395, 2159, 10377, -7052,
10377, -8622, -3214, 11292, -6168, -6168, 11292, -3214,
-8622, 10377, 0, -10377, 8622, 3214, -11292, 6168,
9293, -10781, 3214, 7052, -11395, 6168, 4240, -11087,
8622, 1084, -9880, 10377, -2159, -7873, 11292, -5228,
7873, -11395, 8622, -1084, -7052, 11292, -9293, 2159,
6168, -11087, 9880, -3214, -5228, 10781, -10377, 4240,
6168, -10377, 11292, -8622, 3214, 3214, -8622, 11292,
-10377, 6168, 0, -6168, 10377, -11292, 8622, -3214,
4240, -7873, 10377, -11395, 10781, -8622, 5228, -1084,
-3214, 7052, -9880, 11292, -11087, 9293, -6168, 2159,
2159, -4240, 6168, -7873, 9293, -10377, 11087, -11395,
11292, -10781, 9880, -8622, 7052, -5228, 3214, -1084
};
static const int xC1S7 = 16069;
static const int xC2S6 = 15137;
static const int xC3S5 = 13623;
......@@ -395,17 +520,24 @@ void vp8_short_fhaar2x2_c(short *input, short *output, int pitch) { // pitch = 8
}
void vp8_fht_c(short *input, short *output, int pitch,
TX_TYPE tx_type, int tx_dim) {
/* For test */
#define TEST_INT 1
#if TEST_INT
#define vp8_fht_int_c vp8_fht_c
#else
#define vp8_fht_float_c vp8_fht_c
#endif
vp8_clear_system_state(); // Make it simd safe : __asm emms;
void vp8_fht_float_c(const int16_t *input, int pitch, int16_t *output,
TX_TYPE tx_type, int 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 bufa[256], bufb[256]; // buffers are for floating-point test purpose
// the implementation could be simplified in
// conjunction with integer transform
const int16_t *ip = input;
int16_t *op = output;
float *pfa = &bufa[0];
float *pfb = &bufb[0];
......@@ -415,8 +547,8 @@ void vp8_fht_c(short *input, short *output, int pitch,
assert(tx_type != DCT_DCT);
// load and convert residual array into floating-point
for(j = 0; j < tx_dim; j++) {
for(i = 0; i < tx_dim; i++) {
for (j = 0; j < tx_dim; j++) {
for (i = 0; i < tx_dim; i++) {
pfa[i] = (float)ip[i];
}
pfa += tx_dim;
......@@ -427,7 +559,7 @@ void vp8_fht_c(short *input, short *output, int pitch,
pfa = &bufa[0];
pfb = &bufb[0];
switch(tx_type) {
switch (tx_type) {
case ADST_ADST :
case ADST_DCT :
ptv = (tx_dim == 4) ? &adst_4[0] :
......@@ -440,10 +572,10 @@ void vp8_fht_c(short *input, short *output, int pitch,
break;
}
for(j = 0; j < tx_dim; j++) {
for(i = 0; i < tx_dim; i++) {
for (j = 0; j < tx_dim; j++) {
for (i = 0; i < tx_dim; i++) {
pfb[i] = 0;
for(k = 0; k < tx_dim; k++) {
for (k = 0; k < tx_dim; k++) {
pfb[i] += ptv[k] * pfa[(k * tx_dim)];
}
pfa += 1;
......@@ -457,7 +589,7 @@ void vp8_fht_c(short *input, short *output, int pitch,
pfa = &bufa[0];
pfb = &bufb[0];
switch(tx_type) {
switch (tx_type) {
case ADST_ADST :
case DCT_ADST :
pth = (tx_dim == 4) ? &adst_4[0] :
......@@ -470,10 +602,10 @@ void vp8_fht_c(short *input, short *output, int pitch,
break;
}
for(j = 0; j < tx_dim; j++) {
for(i = 0; i < tx_dim; i++) {
for (j = 0; j < tx_dim; j++) {
for (i = 0; i < tx_dim; i++) {
pfa[i] = 0;
for(k = 0; k < tx_dim; k++) {
for (k = 0; k < tx_dim; k++) {
pfa[i] += pfb[k] * pth[k];
}
pth += tx_dim;
......@@ -483,7 +615,7 @@ void vp8_fht_c(short *input, short *output, int pitch,
pfb += tx_dim;
// pth -= tx_dim * tx_dim;
switch(tx_type) {
switch (tx_type) {
case ADST_ADST :
case DCT_ADST :
pth = (tx_dim == 4) ? &adst_4[0] :
......@@ -498,19 +630,102 @@ void vp8_fht_c(short *input, short *output, int pitch,
}
// convert to short integer format and load BLOCKD buffer
op = output ;
pfa = &bufa[0] ;
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);
for (j = 0; j < tx_dim; j++) {
for (i = 0; i < tx_dim; i++) {
op[i] = (pfa[i] > 0 ) ? (int16_t)( 8 * pfa[i] + 0.49) :
-(int16_t)(- 8 * pfa[i] + 0.49);
}
op += tx_dim;
pfa += tx_dim;
}
}
vp8_clear_system_state(); // Make it simd safe : __asm emms;
vp8_clear_system_state(); // Make it simd safe : __asm emms;
}
/* Converted the transforms to integer form. */
#define VERTICAL_SHIFT 11
#define VERTICAL_ROUNDING ((1 << (VERTICAL_SHIFT - 1)) - 1)
#define HORIZONTAL_SHIFT 16
#define HORIZONTAL_ROUNDING ((1 << (HORIZONTAL_SHIFT - 1)) - 1)
void vp8_fht_int_c(const int16_t *input, int pitch, int16_t *output,
TX_TYPE tx_type, int tx_dim) {
int i, j, k;
int16_t imbuf[256];
const int16_t *ip = input;
int16_t *op = output;
int16_t *im = &imbuf[0];
/* pointers to vertical and horizontal transforms. */
const int16_t *ptv = NULL, *pth = NULL;
switch (tx_type) {
case ADST_ADST :
ptv = pth = (tx_dim == 4) ? &adst_i4[0]
: ((tx_dim == 8) ? &adst_i8[0]
: &adst_i16[0]);
break;
case ADST_DCT :
ptv = (tx_dim == 4) ? &adst_i4[0]
: ((tx_dim == 8) ? &adst_i8[0] : &adst_i16[0]);
pth =<