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ffmpeg.wasm-core
Commit e0ae2174 authored by Diego Biurrun's avatar Diego Biurrun
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simple_idct: remove disabled code

parent 473e547e
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libavcodec/simple_idct.c
View file @ e0ae2174
......@@ -34,17 +34,6 @@
#include "mathops.h"
#include "simple_idct.h"
#if 0
#define W1 2841 /* 2048*sqrt (2)*cos (1*pi/16) */
#define W2 2676 /* 2048*sqrt (2)*cos (2*pi/16) */
#define W3 2408 /* 2048*sqrt (2)*cos (3*pi/16) */
#define W4 2048 /* 2048*sqrt (2)*cos (4*pi/16) */
#define W5 1609 /* 2048*sqrt (2)*cos (5*pi/16) */
#define W6 1108 /* 2048*sqrt (2)*cos (6*pi/16) */
#define W7 565 /* 2048*sqrt (2)*cos (7*pi/16) */
#define ROW_SHIFT 8
#define COL_SHIFT 17
#else
#define W1 22725 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W2 21407 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W3 19266 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
......@@ -54,7 +43,6 @@
#define W7 4520 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define ROW_SHIFT 11
#define COL_SHIFT 20 // 6
#endif
static inline void idctRowCondDC (DCTELEM * row)
{
......
libavcodec/x86/simple_idct_mmx.c
View file @ e0ae2174
......@@ -37,11 +37,7 @@
#define C1 22725 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define C2 21407 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define C3 19266 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#if 0
#define C4 16384 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#else
#define C4 16383 //cos(i*M_PI/16)*sqrt(2)*(1<<14) - 0.5
#endif
#define C5 12873 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define C6 8867 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define C7 4520 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
......@@ -80,135 +76,6 @@ DECLARE_ALIGNED(8, static const int16_t, coeffs)[]= {
C3, -C1, C3, -C1
};
#if 0
static void unused_var_killer(void)
{
int a= wm1010 + d40000;
temp[0]=a;
}
static void inline idctCol (int16_t * col, int16_t *input)
{
#undef C0
#undef C1
#undef C2
#undef C3
#undef C4
#undef C5
#undef C6
#undef C7
int a0, a1, a2, a3, b0, b1, b2, b3;
const int C0 = 23170; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C1 = 22725; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C2 = 21407; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C3 = 19266; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C4 = 16383; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C5 = 12873; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C6 = 8867; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C7 = 4520; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
/*
if( !(col[8*1] | col[8*2] |col[8*3] |col[8*4] |col[8*5] |col[8*6] | col[8*7])) {
col[8*0] = col[8*1] = col[8*2] = col[8*3] = col[8*4] =
col[8*5] = col[8*6] = col[8*7] = col[8*0]<<3;
return;
}*/
col[8*0] = input[8*0 + 0];
col[8*1] = input[8*2 + 0];
col[8*2] = input[8*0 + 1];
col[8*3] = input[8*2 + 1];
col[8*4] = input[8*4 + 0];
col[8*5] = input[8*6 + 0];
col[8*6] = input[8*4 + 1];
col[8*7] = input[8*6 + 1];
a0 = C4*col[8*0] + C2*col[8*2] + C4*col[8*4] + C6*col[8*6] + (1<<(COL_SHIFT-1));
a1 = C4*col[8*0] + C6*col[8*2] - C4*col[8*4] - C2*col[8*6] + (1<<(COL_SHIFT-1));
a2 = C4*col[8*0] - C6*col[8*2] - C4*col[8*4] + C2*col[8*6] + (1<<(COL_SHIFT-1));
a3 = C4*col[8*0] - C2*col[8*2] + C4*col[8*4] - C6*col[8*6] + (1<<(COL_SHIFT-1));
b0 = C1*col[8*1] + C3*col[8*3] + C5*col[8*5] + C7*col[8*7];
b1 = C3*col[8*1] - C7*col[8*3] - C1*col[8*5] - C5*col[8*7];
b2 = C5*col[8*1] - C1*col[8*3] + C7*col[8*5] + C3*col[8*7];
b3 = C7*col[8*1] - C5*col[8*3] + C3*col[8*5] - C1*col[8*7];
col[8*0] = (a0 + b0) >> COL_SHIFT;
col[8*1] = (a1 + b1) >> COL_SHIFT;
col[8*2] = (a2 + b2) >> COL_SHIFT;
col[8*3] = (a3 + b3) >> COL_SHIFT;
col[8*4] = (a3 - b3) >> COL_SHIFT;
col[8*5] = (a2 - b2) >> COL_SHIFT;
col[8*6] = (a1 - b1) >> COL_SHIFT;
col[8*7] = (a0 - b0) >> COL_SHIFT;
}
static void inline idctRow (int16_t * output, int16_t * input)
{
int16_t row[8];
int a0, a1, a2, a3, b0, b1, b2, b3;
const int C0 = 23170; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C1 = 22725; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C2 = 21407; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C3 = 19266; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C4 = 16383; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C5 = 12873; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C6 = 8867; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
const int C7 = 4520; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
row[0] = input[0];
row[2] = input[1];
row[4] = input[4];
row[6] = input[5];
row[1] = input[8];
row[3] = input[9];
row[5] = input[12];
row[7] = input[13];
if( !(row[1] | row[2] |row[3] |row[4] |row[5] |row[6] | row[7]) ) {
row[0] = row[1] = row[2] = row[3] = row[4] =
row[5] = row[6] = row[7] = row[0]<<3;
output[0] = row[0];
output[2] = row[1];
output[4] = row[2];
output[6] = row[3];
output[8] = row[4];
output[10] = row[5];
output[12] = row[6];
output[14] = row[7];
return;
}
a0 = C4*row[0] + C2*row[2] + C4*row[4] + C6*row[6] + (1<<(ROW_SHIFT-1));
a1 = C4*row[0] + C6*row[2] - C4*row[4] - C2*row[6] + (1<<(ROW_SHIFT-1));
a2 = C4*row[0] - C6*row[2] - C4*row[4] + C2*row[6] + (1<<(ROW_SHIFT-1));
a3 = C4*row[0] - C2*row[2] + C4*row[4] - C6*row[6] + (1<<(ROW_SHIFT-1));
b0 = C1*row[1] + C3*row[3] + C5*row[5] + C7*row[7];
b1 = C3*row[1] - C7*row[3] - C1*row[5] - C5*row[7];
b2 = C5*row[1] - C1*row[3] + C7*row[5] + C3*row[7];
b3 = C7*row[1] - C5*row[3] + C3*row[5] - C1*row[7];
row[0] = (a0 + b0) >> ROW_SHIFT;
row[1] = (a1 + b1) >> ROW_SHIFT;
row[2] = (a2 + b2) >> ROW_SHIFT;
row[3] = (a3 + b3) >> ROW_SHIFT;
row[4] = (a3 - b3) >> ROW_SHIFT;
row[5] = (a2 - b2) >> ROW_SHIFT;
row[6] = (a1 - b1) >> ROW_SHIFT;
row[7] = (a0 - b0) >> ROW_SHIFT;
output[0] = row[0];
output[2] = row[1];
output[4] = row[2];
output[6] = row[3];
output[8] = row[4];
output[10] = row[5];
output[12] = row[6];
output[14] = row[7];
}
#endif
static inline void idct(int16_t *block)
{
DECLARE_ALIGNED(8, int64_t, align_tmp)[16];
......
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