hq2x.c File Reference

#include "shared/shared.h"
#include "common/cvar.h"
#include "refresh/images.h"

Go to the source code of this file.

Macros
#define	FIX(x)   (int)((x) * (1 << 16))

Functions
static q_noinline int	diff (uint32_t A_u32, uint32_t B_u32)
static int	same (uint32_t A, uint32_t B)
static uint64_t	grow (uint64_t n)
static uint32_t	pack (uint64_t n)
static q_noinline uint32_t	blend_1_1 (uint32_t A, uint32_t B)
static q_noinline uint32_t	blend_3_1 (uint32_t A, uint32_t B)
static q_noinline uint32_t	blend_7_1 (uint32_t A, uint32_t B)
static q_noinline uint32_t	blend_5_3 (uint32_t A, uint32_t B)
static q_noinline uint32_t	blend_2_1_1 (uint32_t A, uint32_t B, uint32_t C)
static q_noinline uint32_t	blend_5_2_1 (uint32_t A, uint32_t B, uint32_t C)
static q_noinline uint32_t	blend_6_1_1 (uint32_t A, uint32_t B, uint32_t C)
static q_noinline uint32_t	blend_2_3_3 (uint32_t A, uint32_t B, uint32_t C)
static q_noinline uint32_t	blend_14_1_1 (uint32_t A, uint32_t B, uint32_t C)
static q_noinline uint32_t	hq2x_blend (int rule, uint32_t E, uint32_t A, uint32_t B, uint32_t D, uint32_t F, uint32_t H)
static q_noinline void	hq4x_blend (int rule, uint32_t *p00, uint32_t *p01, uint32_t *p10, uint32_t *p11, uint32_t E, uint32_t A, uint32_t B, uint32_t D, uint32_t F, uint32_t H)
void	HQ2x_Render (uint32_t *output, const uint32_t *input, int width, int height)
void	HQ4x_Render (uint32_t *output, const uint32_t *input, int width, int height)
void	HQ2x_Init (void)

Variables
static const uint8_t	hqTable [256]
static uint8_t	rotTable [256]
static int32_t	yccTable [8][256]
static int32_t	maxY
static int32_t	maxCb
static int32_t	maxCr

Macro Definition Documentation

FIX

#define FIX

(

x

)

(int)((x) * (1 << 16))

Definition at line 457 of file hq2x.c.

Function Documentation

blend_14_1_1()

static q_noinline uint32_t blend_14_1_1 ( uint32_t  A, uint32_t  B, uint32_t  C  )

static

Definition at line 146 of file hq2x.c.

{
    return pack((grow(A) * 14 + grow(B) + grow(C)) >> 4);
}

Referenced by hq2x_blend().

blend_1_1()

static q_noinline uint32_t blend_1_1 ( uint32_t  A, uint32_t  B  )

static

Definition at line 106 of file hq2x.c.

{
    return pack((grow(A) + grow(B)) >> 1);
}

Referenced by hq4x_blend().

blend_2_1_1()

static q_noinline uint32_t blend_2_1_1 ( uint32_t  A, uint32_t  B, uint32_t  C  )

static

Definition at line 126 of file hq2x.c.

{
    return pack((grow(A) * 2 + grow(B) + grow(C)) >> 2);
}

Referenced by hq2x_blend(), and hq4x_blend().

blend_2_3_3()

static q_noinline uint32_t blend_2_3_3 ( uint32_t  A, uint32_t  B, uint32_t  C  )

static

Definition at line 141 of file hq2x.c.

{
    return pack((grow(A) * 2 + (grow(B) + grow(C)) * 3) >> 3);
}

Referenced by hq2x_blend().

blend_3_1()

static q_noinline uint32_t blend_3_1 ( uint32_t  A, uint32_t  B  )

static

Definition at line 111 of file hq2x.c.

{
    return pack((grow(A) * 3 + grow(B)) >> 2);
}

Referenced by hq2x_blend(), and hq4x_blend().

blend_5_2_1()

static q_noinline uint32_t blend_5_2_1 ( uint32_t  A, uint32_t  B, uint32_t  C  )

static

Definition at line 131 of file hq2x.c.

{
    return pack((grow(A) * 5 + grow(B) * 2 + grow(C)) >> 3);
}

Referenced by hq2x_blend(), and hq4x_blend().

blend_5_3()

static q_noinline uint32_t blend_5_3 ( uint32_t  A, uint32_t  B  )

static

Definition at line 121 of file hq2x.c.

{
    return pack((grow(A) * 5 + grow(B) * 3) >> 3);
}

Referenced by hq4x_blend().

blend_6_1_1()

static q_noinline uint32_t blend_6_1_1 ( uint32_t  A, uint32_t  B, uint32_t  C  )

static

Definition at line 136 of file hq2x.c.

{
    return pack((grow(A) * 6 + grow(B) + grow(C)) >> 3);
}

Referenced by hq2x_blend(), and hq4x_blend().

blend_7_1()

static q_noinline uint32_t blend_7_1 ( uint32_t  A, uint32_t  B  )

static

Definition at line 116 of file hq2x.c.

{
    return pack((grow(A) * 7 + grow(B)) >> 3);
}

Referenced by hq4x_blend().

diff()

static q_noinline int diff ( uint32_t  A_u32, uint32_t  B_u32  )

static

Definition at line 55 of file hq2x.c.

{
    color_t A, B;
    int32_t a, b;
 
    A.u32 = A_u32;
    B.u32 = B_u32;
 
    if (A.u8[3] == 0 && B.u8[3] == 0)
        return 0;
 
    if (A.u8[3] == 0 || B.u8[3] == 0)
        return 1;
 
    a = yccTable[0][A.u8[0]] + yccTable[1][A.u8[1]] + yccTable[2][A.u8[2]];
    b = yccTable[0][B.u8[0]] + yccTable[1][B.u8[1]] + yccTable[2][B.u8[2]];
    if (abs(a - b) > maxY)
        return 1;
 
    a = yccTable[3][A.u8[0]] + yccTable[4][A.u8[1]] + yccTable[5][A.u8[2]];
    b = yccTable[3][B.u8[0]] + yccTable[4][B.u8[1]] + yccTable[5][B.u8[2]];
    if (abs(a - b) > maxCb)
        return 1;
 
    a = yccTable[5][A.u8[0]] + yccTable[6][A.u8[1]] + yccTable[7][A.u8[2]];
    b = yccTable[5][B.u8[0]] + yccTable[6][B.u8[1]] + yccTable[7][B.u8[2]];
    if (abs(a - b) > maxCr)
        return 1;
 
    return 0;
}

Referenced by Com_TimeDiff(), Com_TimeDiffLong(), GL_ArrayBits(), GL_StateBits(), HQ2x_Render(), HQ4x_Render(), Key_SetDest(), misc_viper_bomb_prethink(), NET_Stats_f(), NET_UpdateStats(), same(), turret_breach_think(), vkpt_shadow_map_setup(), and write_index().

grow()

static uint64_t grow ( uint64_t  n )

inlinestatic

Definition at line 92 of file hq2x.c.

{
    n |= n << 24;
    n &= UINT64_C(0xff00ff00ff00ff);
    return n;
}

Referenced by blend_14_1_1(), blend_1_1(), blend_2_1_1(), blend_2_3_3(), blend_3_1(), blend_5_2_1(), blend_5_3(), blend_6_1_1(), and blend_7_1().

hq2x_blend()

static q_noinline uint32_t hq2x_blend ( int  rule, uint32_t  E, uint32_t  A, uint32_t  B, uint32_t  D, uint32_t  F, uint32_t  H  )

static

Definition at line 151 of file hq2x.c.

{
    switch (rule) {
    case 1:
        return blend_2_1_1(E, D, B);
    case 2:
        return blend_2_1_1(E, A, D);
    case 3:
        return blend_2_1_1(E, A, B);
    case 4:
        return blend_3_1(E, D);
    case 5:
        return blend_3_1(E, B);
    case 6:
        return blend_3_1(E, A);
    case 7:
        return same(B, D) ? blend_2_1_1(E, D, B) : blend_3_1(E, A);
    case 8:
        return same(B, D) ? blend_2_1_1(E, D, B) : E;
    case 9:
        return same(B, D) ? blend_6_1_1(E, D, B) : blend_3_1(E, A);
    case 10:
        return same(B, F) ? blend_5_2_1(E, B, D) : blend_3_1(E, D);
    case 11:
        return same(D, H) ? blend_5_2_1(E, D, B) : blend_3_1(E, B);
    case 12:
    case 13:
        return same(B, D) ? blend_2_3_3(E, D, B) : blend_3_1(E, A);
    case 14:
    case 15:
        return same(B, D) ? blend_2_3_3(E, D, B) : E;
    case 16:
        return same(B, D) ? blend_14_1_1(E, D, B) : E;
    default:
        Com_Error(ERR_FATAL, "%s: bad rule %d", __func__, rule);
        return 0;
    }
}

Referenced by HQ2x_Render().

HQ2x_Init()

void HQ2x_Init

(

void

)

Definition at line 459 of file hq2x.c.

{
    int n;
 
    cvar_t *hqx_y  = Cvar_Get("hqx_y", "48", CVAR_FILES);
    cvar_t *hqx_cb = Cvar_Get("hqx_cb", "7", CVAR_FILES);
    cvar_t *hqx_cr = Cvar_Get("hqx_cr", "6", CVAR_FILES);
 
    maxY  = FIX(Cvar_ClampValue(hqx_y,  0, 256));
    maxCb = FIX(Cvar_ClampValue(hqx_cb, 0, 256));
    maxCr = FIX(Cvar_ClampValue(hqx_cr, 0, 256));
 
    for (n = 0; n < 256; n++) {
        rotTable[n] = ((n >> 2) & 0x11) | ((n << 2) & 0x88)
                    | ((n & 0x01) << 5) | ((n & 0x08) << 3)
                    | ((n & 0x10) >> 3) | ((n & 0x80) >> 5);
    }
 
    // libjpeg YCbCr coefficients
    for (n = 0; n < 256; n++) {
        yccTable[0][n] =  FIX(0.29900f) * n;
        yccTable[1][n] =  FIX(0.58700f) * n;
        yccTable[2][n] =  FIX(0.11400f) * n;
        yccTable[3][n] = -FIX(0.16874f) * n;
        yccTable[4][n] = -FIX(0.33126f) * n;
        yccTable[5][n] =  FIX(0.50000f) * n;
        yccTable[6][n] = -FIX(0.41869f) * n;
        yccTable[7][n] = -FIX(0.08131f) * n;
    }
}

Referenced by GL_InitImages().

HQ2x_Render()

void HQ2x_Render	(	uint32_t *	output,
		const uint32_t *	input,
		int	width,
		int	height
	)

Definition at line 357 of file hq2x.c.

{
    int x, y;
 
    for (y = 0; y < height; y++) {
        const uint32_t *in = input + y * width;
        uint32_t *out0 = output + (y * 2 + 0) * width * 2;
        uint32_t *out1 = output + (y * 2 + 1) * width * 2;
 
        int prevline = (y == 0 ? 0 : width);
        int nextline = (y == height - 1 ? 0 : width);
 
        for (x = 0; x < width; x++) {
            int prev = (x == 0 ? 0 : 1);
            int next = (x == width - 1 ? 0 : 1);
 
            uint32_t A = *(in - prevline - prev);
            uint32_t B = *(in - prevline);
            uint32_t C = *(in - prevline + next);
            uint32_t D = *(in - prev);
            uint32_t E = *(in);
            uint32_t F = *(in + next);
            uint32_t G = *(in + nextline - prev);
            uint32_t H = *(in + nextline);
            uint32_t I = *(in + nextline + next);
 
            int pattern;
            pattern  = diff(E, A) << 0;
            pattern |= diff(E, B) << 1;
            pattern |= diff(E, C) << 2;
            pattern |= diff(E, D) << 3;
            pattern |= diff(E, F) << 4;
            pattern |= diff(E, G) << 5;
            pattern |= diff(E, H) << 6;
            pattern |= diff(E, I) << 7;
 
            *(out0 + 0) = hq2x_blend(hqTable[pattern], E, A, B, D, F, H); pattern = rotTable[pattern];
            *(out0 + 1) = hq2x_blend(hqTable[pattern], E, C, F, B, H, D); pattern = rotTable[pattern];
            *(out1 + 1) = hq2x_blend(hqTable[pattern], E, I, H, F, D, B); pattern = rotTable[pattern];
            *(out1 + 0) = hq2x_blend(hqTable[pattern], E, G, D, H, B, F);
 
            in++;
            out0 += 2;
            out1 += 2;
        }
    }
}

Referenced by GL_Upscale32().

hq4x_blend()

static q_noinline void hq4x_blend ( int  rule, uint32_t *  p00, uint32_t *  p01, uint32_t *  p10, uint32_t *  p11, uint32_t  E, uint32_t  A, uint32_t  B, uint32_t  D, uint32_t  F, uint32_t  H  )

static

Definition at line 190 of file hq2x.c.

{
    switch (rule) {
    case 1:
        *p00 = blend_2_1_1(E, B, D);
        *p01 = blend_5_2_1(E, B, D);
        *p10 = blend_5_2_1(E, D, B);
        *p11 = blend_6_1_1(E, D, B);
        break;
    case 2:
        *p00 = blend_5_3(E, A);
        *p01 = blend_3_1(E, A);
        *p10 = blend_5_2_1(E, D, A);
        *p11 = blend_7_1(E, A);
        break;
    case 3:
        *p00 = blend_5_3(E, A);
        *p01 = blend_5_2_1(E, B, A);
        *p10 = blend_3_1(E, A);
        *p11 = blend_7_1(E, A);
        break;
    case 4:
        *p00 = blend_5_3(E, D);
        *p01 = blend_7_1(E, D);
        *p10 = blend_5_3(E, D);
        *p11 = blend_7_1(E, D);
        break;
    case 5:
        *p00 = blend_5_3(E, B);
        *p01 = blend_5_3(E, B);
        *p10 = blend_7_1(E, B);
        *p11 = blend_7_1(E, B);
        break;
    case 6:
        *p00 = blend_5_3(E, A);
        *p01 = blend_3_1(E, A);
        *p10 = blend_3_1(E, A);
        *p11 = blend_7_1(E, A);
        break;
    case 7:
        if (same(B, D)) {
            *p00 = blend_1_1(B, D);
            *p01 = blend_1_1(B, E);
            *p10 = blend_1_1(D, E);
            *p11 = E;
        } else {
            *p00 = blend_5_3(E, A);
            *p01 = blend_3_1(E, A);
            *p10 = blend_3_1(E, A);
            *p11 = blend_7_1(E, A);
        }
        break;
    case 8:
        if (same(B, D)) {
            *p00 = blend_1_1(B, D);
            *p01 = blend_1_1(B, E);
            *p10 = blend_1_1(D, E);
        } else {
            *p00 = E;
            *p01 = E;
            *p10 = E;
        }
        *p11 = E;
        break;
    case 9:
        if (same(B, D)) {
            *p00 = blend_2_1_1(E, B, D);
            *p01 = blend_3_1(E, B);
            *p10 = blend_3_1(E, D);
            *p11 = E;
        } else {
            *p00 = blend_5_3(E, A);
            *p01 = blend_3_1(E, A);
            *p10 = blend_3_1(E, A);
            *p11 = blend_7_1(E, A);
        }
        break;
    case 10:
        if (same(B, F)) {
            *p00 = blend_3_1(E, B);
            *p01 = blend_3_1(B, E);
        } else {
            *p00 = blend_5_3(E, D);
            *p01 = blend_7_1(E, D);
        }
        *p10 = blend_5_3(E, D);
        *p11 = blend_7_1(E, D);
        break;
    case 11:
        if (same(D, H)) {
            *p00 = blend_3_1(E, D);
            *p10 = blend_3_1(D, E);
        } else {
            *p00 = blend_5_3(E, B);
            *p10 = blend_7_1(E, B);
        }
        *p01 = blend_5_3(E, B);
        *p11 = blend_7_1(E, B);
        break;
    case 12:
        if (same(B, D)) {
            *p00 = blend_1_1(B, D);
            *p01 = blend_2_1_1(B, E, D);
            *p10 = blend_5_3(D, B);
            *p11 = blend_6_1_1(E, D, B);
        } else {
            *p00 = blend_5_3(E, A);
            *p01 = blend_3_1(E, A);
            *p10 = blend_3_1(E, A);
            *p11 = blend_7_1(E, A);
        }
        break;
    case 13:
        if (same(B, D)) {
            *p00 = blend_1_1(B, D);
            *p01 = blend_5_3(B, D);
            *p10 = blend_2_1_1(D, E, B);
            *p11 = blend_6_1_1(E, D, B);
        } else {
            *p00 = blend_5_3(E, A);
            *p01 = blend_3_1(E, A);
            *p10 = blend_3_1(E, A);
            *p11 = blend_7_1(E, A);
        }
        break;
    case 14:
        if (same(B, D)) {
            *p00 = blend_1_1(B, D);
            *p01 = blend_2_1_1(B, E, D);
            *p10 = blend_5_3(D, B);
            *p11 = blend_6_1_1(E, D, B);
        } else {
            *p00 = E;
            *p01 = E;
            *p10 = E;
            *p11 = E;
        }
        break;
    case 15:
        if (same(B, D)) {
            *p00 = blend_1_1(B, D);
            *p01 = blend_5_3(B, D);
            *p10 = blend_2_1_1(D, E, B);
            *p11 = blend_6_1_1(E, D, B);
        } else {
            *p00 = E;
            *p01 = E;
            *p10 = E;
            *p11 = E;
        }
        break;
    case 16:
        if (same(B, D))
            *p00 = blend_2_1_1(E, B, D);
        else
            *p00 = E;
        *p01 = E;
        *p10 = E;
        *p11 = E;
        break;
    default:
        Com_Error(ERR_FATAL, "%s: bad rule %d", __func__, rule);
        break;
    }
}

Referenced by HQ4x_Render().

HQ4x_Render()

void HQ4x_Render	(	uint32_t *	output,
		const uint32_t *	input,
		int	width,
		int	height
	)

Definition at line 405 of file hq2x.c.

{
    int x, y;
 
    for (y = 0; y < height; y++) {
        const uint32_t *in = input + y * width;
        uint32_t *out0 = output + (y * 4 + 0) * width * 4;
        uint32_t *out1 = output + (y * 4 + 1) * width * 4;
        uint32_t *out2 = output + (y * 4 + 2) * width * 4;
        uint32_t *out3 = output + (y * 4 + 3) * width * 4;
 
        int prevline = (y == 0 ? 0 : width);
        int nextline = (y == height - 1 ? 0 : width);
 
        for (x = 0; x < width; x++) {
            int prev = (x == 0 ? 0 : 1);
            int next = (x == width - 1 ? 0 : 1);
 
            uint32_t A = *(in - prevline - prev);
            uint32_t B = *(in - prevline);
            uint32_t C = *(in - prevline + next);
            uint32_t D = *(in - prev);
            uint32_t E = *(in);
            uint32_t F = *(in + next);
            uint32_t G = *(in + nextline - prev);
            uint32_t H = *(in + nextline);
            uint32_t I = *(in + nextline + next);
 
            int pattern;
            pattern  = diff(E, A) << 0;
            pattern |= diff(E, B) << 1;
            pattern |= diff(E, C) << 2;
            pattern |= diff(E, D) << 3;
            pattern |= diff(E, F) << 4;
            pattern |= diff(E, G) << 5;
            pattern |= diff(E, H) << 6;
            pattern |= diff(E, I) << 7;
 
            hq4x_blend(hqTable[pattern], out0 + 0, out0 + 1, out1 + 0, out1 + 1, E, A, B, D, F, H); pattern = rotTable[pattern];
            hq4x_blend(hqTable[pattern], out0 + 3, out1 + 3, out0 + 2, out1 + 2, E, C, F, B, H, D); pattern = rotTable[pattern];
            hq4x_blend(hqTable[pattern], out3 + 3, out3 + 2, out2 + 3, out2 + 2, E, I, H, F, D, B); pattern = rotTable[pattern];
            hq4x_blend(hqTable[pattern], out3 + 0, out2 + 0, out3 + 1, out2 + 1, E, G, D, H, B, F);
 
            in++;
            out0 += 4;
            out1 += 4;
            out2 += 4;
            out3 += 4;
        }
    }
}

Referenced by GL_Upscale32().

pack()

static uint32_t pack ( uint64_t  n )

inlinestatic

Definition at line 99 of file hq2x.c.

{
    n &= UINT64_C(0xff00ff00ff00ff);
    n |= n >> 24;
    return n;
}

Referenced by blend_14_1_1(), blend_1_1(), blend_2_1_1(), blend_2_3_3(), blend_3_1(), blend_5_2_1(), blend_5_3(), blend_6_1_1(), blend_7_1(), CL_Record_f(), load_pak_file(), open_from_pak(), pack_alloc(), pack_get(), pack_hash_file(), pack_put(), and q_printf().

same()

static int same ( uint32_t  A, uint32_t  B  )

inlinestatic

Definition at line 87 of file hq2x.c.

{
    return !diff(A, B);
}

Referenced by hq2x_blend(), and hq4x_blend().

Variable Documentation

hqTable

const uint8_t hqTable[256]

static

Initial value:

= {
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  7,  8, 3,  5, 13, 15,
    1, 1, 2, 10, 1, 1, 2, 10, 3,  5,  8,  8, 3,  5,  6,  8,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5, 12, 14, 3,  5,  9, 16,
    1, 1, 2, 10, 1, 1, 2, 10, 3,  5,  9,  8, 3,  5,  6, 16,
    1, 1, 2,  4, 1, 1, 2,  4, 3, 11,  8,  8, 3, 11,  9,  8,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  9,  8, 3,  5,  9,  8,
    1, 1, 2,  4, 1, 1, 2,  4, 3, 11,  6,  8, 3, 11,  6, 16,
    1, 1, 2,  4, 1, 1, 2, 10, 3,  5,  9,  8, 3, 11,  6, 16,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  7,  8, 3,  5, 13, 15,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  9,  8, 3,  5,  9,  8,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5, 12, 14, 3,  5,  9, 16,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  9, 14, 3,  5,  6, 16,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  9,  8, 3,  5,  9, 15,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  9,  8, 3,  5,  6,  8,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  9,  8, 3,  5,  6, 16,
    1, 1, 2,  4, 1, 1, 2,  4, 3,  5,  6,  8, 3,  5,  6, 16,
}

Definition at line 32 of file hq2x.c.

Referenced by HQ2x_Render(), and HQ4x_Render().

maxCb

int32_t maxCb

static

Definition at line 53 of file hq2x.c.

Referenced by diff(), and HQ2x_Init().

maxCr

int32_t maxCr

static

Definition at line 53 of file hq2x.c.

Referenced by diff(), and HQ2x_Init().

maxY

int32_t maxY

static

Definition at line 53 of file hq2x.c.

Referenced by diff(), and HQ2x_Init().

rotTable

uint8_t rotTable[256]

static

Definition at line 51 of file hq2x.c.

Referenced by HQ2x_Init(), HQ2x_Render(), and HQ4x_Render().

yccTable

int32_t yccTable[8][256]

static

Definition at line 52 of file hq2x.c.

Referenced by diff(), and HQ2x_Init().