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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "../../../include/fxge/fx_ge.h"
#include "../../../include/fxcodec/fx_codec.h"
#include "dib_int.h"
const FX_BYTE g_GammaRamp[256] = {
0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7,
8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 12, 12, 12, 13,
13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 17, 18, 18, 19, 19, 20,
20, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 27, 27, 28, 29, 29,
30, 30, 31, 32, 32, 33, 34, 35, 35, 36, 37, 37, 38, 39, 40, 41,
41, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 51, 52, 53, 54,
55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70,
71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 82, 84, 85, 86, 87, 88,
90, 91, 92, 93, 95, 96, 97, 99, 100, 101, 103, 104, 105, 107, 108, 109,
111, 112, 114, 115, 116, 118, 119, 121, 122, 124, 125, 127, 128, 130, 131, 133,
134, 136, 138, 139, 141, 142, 144, 146, 147, 149, 151, 152, 154, 156, 157, 159,
161, 163, 164, 166, 168, 170, 171, 173, 175, 177, 179, 181, 183, 184, 186, 188,
190, 192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220,
222, 224, 226, 229, 231, 233, 235, 237, 239, 242, 244, 246, 248, 250, 253, 255,
};
const FX_BYTE g_GammaInverse[256] = {
0, 13, 22, 28, 34, 38, 42, 46, 50, 53, 56, 59, 61, 64, 66, 69,
71, 73, 75, 77, 79, 81, 83, 85, 86, 88, 90, 92, 93, 95, 96, 98,
99, 101, 102, 104, 105, 106, 108, 109, 110, 112, 113, 114, 115, 117, 118, 119,
120, 121, 122, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136,
137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 148, 149, 150, 151,
152, 153, 154, 155, 155, 156, 157, 158, 159, 159, 160, 161, 162, 163, 163, 164,
165, 166, 167, 167, 168, 169, 170, 170, 171, 172, 173, 173, 174, 175, 175, 176,
177, 178, 178, 179, 180, 180, 181, 182, 182, 183, 184, 185, 185, 186, 187, 187,
188, 189, 189, 190, 190, 191, 192, 192, 193, 194, 194, 195, 196, 196, 197, 197,
198, 199, 199, 200, 200, 201, 202, 202, 203, 203, 204, 205, 205, 206, 206, 207,
208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214, 215, 215, 216,
216, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222, 222, 223, 223, 224, 224,
225, 226, 226, 227, 227, 228, 228, 229, 229, 230, 230, 231, 231, 232, 232, 233,
233, 234, 234, 235, 235, 236, 236, 237, 237, 238, 238, 238, 239, 239, 240, 240,
241, 241, 242, 242, 243, 243, 244, 244, 245, 245, 246, 246, 246, 247, 247, 248,
248, 249, 249, 250, 250, 251, 251, 251, 252, 252, 253, 253, 254, 254, 255, 255,
};
const FX_BYTE _color_sqrt[256] = {
0x00, 0x03, 0x07, 0x0B, 0x0F, 0x12, 0x16, 0x19, 0x1D, 0x20, 0x23, 0x26, 0x29, 0x2C, 0x2F, 0x32,
0x35, 0x37, 0x3A, 0x3C, 0x3F, 0x41, 0x43, 0x46, 0x48, 0x4A, 0x4C, 0x4E, 0x50, 0x52, 0x54, 0x56,
0x57, 0x59, 0x5B, 0x5C, 0x5E, 0x60, 0x61, 0x63, 0x64, 0x65, 0x67, 0x68, 0x69, 0x6B, 0x6C, 0x6D,
0x6E, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E,
0x8F, 0x90, 0x91, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C,
0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA4, 0xA5, 0xA6, 0xA7, 0xA7, 0xA8,
0xA9, 0xAA, 0xAA, 0xAB, 0xAC, 0xAD, 0xAD, 0xAE, 0xAF, 0xB0, 0xB0, 0xB1, 0xB2, 0xB3, 0xB3, 0xB4,
0xB5, 0xB5, 0xB6, 0xB7, 0xB7, 0xB8, 0xB9, 0xBA, 0xBA, 0xBB, 0xBC, 0xBC, 0xBD, 0xBE, 0xBE, 0xBF,
0xC0, 0xC0, 0xC1, 0xC2, 0xC2, 0xC3, 0xC4, 0xC4, 0xC5, 0xC6, 0xC6, 0xC7, 0xC7, 0xC8, 0xC9, 0xC9,
0xCA, 0xCB, 0xCB, 0xCC, 0xCC, 0xCD, 0xCE, 0xCE, 0xCF, 0xD0, 0xD0, 0xD1, 0xD1, 0xD2, 0xD3, 0xD3,
0xD4, 0xD4, 0xD5, 0xD6, 0xD6, 0xD7, 0xD7, 0xD8, 0xD9, 0xD9, 0xDA, 0xDA, 0xDB, 0xDC, 0xDC, 0xDD,
0xDD, 0xDE, 0xDE, 0xDF, 0xE0, 0xE0, 0xE1, 0xE1, 0xE2, 0xE2, 0xE3, 0xE4, 0xE4, 0xE5, 0xE5, 0xE6,
0xE6, 0xE7, 0xE7, 0xE8, 0xE9, 0xE9, 0xEA, 0xEA, 0xEB, 0xEB, 0xEC, 0xEC, 0xED, 0xED, 0xEE, 0xEE,
0xEF, 0xF0, 0xF0, 0xF1, 0xF1, 0xF2, 0xF2, 0xF3, 0xF3, 0xF4, 0xF4, 0xF5, 0xF5, 0xF6, 0xF6, 0xF7,
0xF7, 0xF8, 0xF8, 0xF9, 0xF9, 0xFA, 0xFA, 0xFB, 0xFB, 0xFC, 0xFC, 0xFD, 0xFD, 0xFE, 0xFE, 0xFF
};
int _BLEND(int blend_mode, int back_color, int src_color)
{
switch (blend_mode) {
case FXDIB_BLEND_NORMAL:
return src_color;
case FXDIB_BLEND_MULTIPLY:
return src_color * back_color / 255;
case FXDIB_BLEND_SCREEN:
return src_color + back_color - src_color * back_color / 255;
case FXDIB_BLEND_OVERLAY:
return _BLEND(FXDIB_BLEND_HARDLIGHT, src_color, back_color);
case FXDIB_BLEND_DARKEN:
return src_color < back_color ? src_color : back_color;
case FXDIB_BLEND_LIGHTEN:
return src_color > back_color ? src_color : back_color;
case FXDIB_BLEND_COLORDODGE: {
if (src_color == 255) {
return src_color;
}
int result = back_color * 255 / (255 - src_color);
if (result > 255) {
return 255;
}
return result;
}
case FXDIB_BLEND_COLORBURN: {
if (src_color == 0) {
return src_color;
}
int result = (255 - back_color) * 255 / src_color;
if (result > 255) {
result = 255;
}
return 255 - result;
}
case FXDIB_BLEND_HARDLIGHT:
if (src_color < 128) {
return (src_color * back_color * 2) / 255;
}
return _BLEND(FXDIB_BLEND_SCREEN, back_color, 2 * src_color - 255);
case FXDIB_BLEND_SOFTLIGHT: {
if (src_color < 128) {
return back_color - (255 - 2 * src_color) * back_color * (255 - back_color) / 255 / 255;
}
return back_color + (2 * src_color - 255) * (_color_sqrt[back_color] - back_color) / 255;
}
case FXDIB_BLEND_DIFFERENCE:
return back_color < src_color ? src_color - back_color : back_color - src_color;
case FXDIB_BLEND_EXCLUSION:
return back_color + src_color - 2 * back_color * src_color / 255;
}
return src_color;
}
struct _RGB {
int red;
int green;
int blue;
};
static inline int _Lum(_RGB color)
{
return (color.red * 30 + color.green * 59 + color.blue * 11) / 100;
}
static _RGB _ClipColor(_RGB color)
{
int l = _Lum(color);
int n = color.red;
if (color.green < n) {
n = color.green;
}
if (color.blue < n) {
n = color.blue;
}
int x = color.red;
if (color.green > x) {
x = color.green;
}
if (color.blue > x) {
x = color.blue;
}
if (n < 0) {
color.red = l + ((color.red - l) * l / (l - n));
color.green = l + ((color.green - l) * l / (l - n));
color.blue = l + ((color.blue - l) * l / (l - n));
}
if (x > 255) {
color.red = l + ((color.red - l) * (255 - l) / (x - l));
color.green = l + ((color.green - l) * (255 - l) / (x - l));
color.blue = l + ((color.blue - l) * (255 - l) / (x - l));
}
return color;
}
static _RGB _SetLum(_RGB color, int l)
{
int d = l - _Lum(color);
color.red += d;
color.green += d;
color.blue += d;
return _ClipColor(color);
}
static int _Sat(_RGB color)
{
int n = color.red;
if (color.green < n) {
n = color.green;
}
if (color.blue < n) {
n = color.blue;
}
int x = color.red;
if (color.green > x) {
x = color.green;
}
if (color.blue > x) {
x = color.blue;
}
return x - n;
}
static _RGB _SetSat(_RGB color, int s)
{
int* max = &color.red;
int* mid = &color.red;
int* min = &color.red;
if (color.green > *max) {
max = &color.green;
}
if (color.blue > *max) {
max = &color.blue;
}
if (color.green < *min) {
min = &color.green;
}
if (color.blue < *min) {
min = &color.blue;
}
if (*max == *min) {
color.red = 0;
color.green = 0;
color.blue = 0;
return color;
}
if (max == &color.red) {
if (min == &color.green) {
mid = &color.blue;
} else {
mid = &color.green;
}
} else if (max == &color.green) {
if (min == &color.red) {
mid = &color.blue;
} else {
mid = &color.red;
}
} else {
if (min == &color.green) {
mid = &color.red;
} else {
mid = &color.green;
}
}
if (*max > *min) {
*mid = (*mid - *min) * s / (*max - *min);
*max = s;
*min = 0;
}
return color;
}
void _RGB_Blend(int blend_mode, FX_LPCBYTE src_scan, FX_BYTE* dest_scan, int results[3])
{
_RGB src, back, result;
src.red = src_scan[2];
src.green = src_scan[1];
src.blue = src_scan[0];
back.red = dest_scan[2];
back.green = dest_scan[1];
back.blue = dest_scan[0];
switch (blend_mode) {
case FXDIB_BLEND_HUE:
result = _SetLum(_SetSat(src, _Sat(back)), _Lum(back));
break;
case FXDIB_BLEND_SATURATION:
result = _SetLum(_SetSat(back, _Sat(src)), _Lum(back));
break;
case FXDIB_BLEND_COLOR:
result = _SetLum(src, _Lum(back));
break;
case FXDIB_BLEND_LUMINOSITY:
result = _SetLum(back, _Lum(src));
break;
}
results[0] = result.blue;
results[1] = result.green;
results[2] = result.red;
}
inline void _CompositeRow_Argb2Mask(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int pixel_count, FX_LPCBYTE clip_scan)
{
src_scan += 3;
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = *src_scan;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
FX_BYTE back_alpha = *dest_scan;
if (!back_alpha) {
*dest_scan = src_alpha;
} else if (src_alpha) {
*dest_scan = back_alpha + src_alpha - back_alpha * src_alpha / 255;
}
dest_scan ++;
src_scan += 4;
}
}
void _CompositeRow_Rgba2Mask(FX_LPBYTE dest_scan, FX_LPCBYTE src_alpha_scan, int pixel_count, FX_LPCBYTE clip_scan)
{
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
FX_BYTE back_alpha = *dest_scan;
if (!back_alpha) {
*dest_scan = src_alpha;
} else if (src_alpha) {
*dest_scan = back_alpha + src_alpha - back_alpha * src_alpha / 255;
}
dest_scan ++;
}
}
void _CompositeRow_Rgb2Mask(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, FX_LPCBYTE clip_scan)
{
if (clip_scan) {
for (int i = 0; i < width; i ++) {
*dest_scan = FXDIB_ALPHA_UNION(*dest_scan, *clip_scan);
dest_scan ++;
clip_scan ++;
}
} else {
FXSYS_memset8(dest_scan, 0xff, width);
}
}
void _CompositeRow_Argb2Graya(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int pixel_count, int blend_type, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan, FX_LPBYTE dst_alpha_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = NULL;
if (pIccTransform) {
pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
}
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
if (src_alpha_scan) {
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = *dst_alpha_scan;
if (back_alpha == 0) {
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, dest_scan, src_scan, 1);
} else {
*dest_scan = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dst_alpha_scan = src_alpha;
}
dest_scan ++;
dst_alpha_scan ++;
src_scan += 3;
continue;
}
FX_BYTE src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha == 0) {
dest_scan ++;
dst_alpha_scan ++;
src_scan += 3;
continue;
}
*dst_alpha_scan = FXDIB_ALPHA_UNION(back_alpha, src_alpha);
int alpha_ratio = src_alpha * 255 / (*dst_alpha_scan);
FX_BYTE gray;
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
dst_alpha_scan++;
src_scan += 3;
}
} else
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = *dst_alpha_scan;
if (back_alpha == 0) {
int src_alpha = src_scan[3];
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, dest_scan, src_scan, 1);
} else {
*dest_scan = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dst_alpha_scan = src_alpha;
}
dest_scan ++;
dst_alpha_scan ++;
src_scan += 4;
continue;
}
FX_BYTE src_alpha = src_scan[3];
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha == 0) {
dest_scan ++;
dst_alpha_scan ++;
src_scan += 4;
continue;
}
*dst_alpha_scan = FXDIB_ALPHA_UNION(back_alpha, src_alpha);
int alpha_ratio = src_alpha * 255 / (*dst_alpha_scan);
FX_BYTE gray;
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
dst_alpha_scan++;
src_scan += 4;
}
return;
}
if (src_alpha_scan) {
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = *dst_alpha_scan;
if (back_alpha == 0) {
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, dest_scan, src_scan, 1);
} else {
*dest_scan = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dst_alpha_scan = src_alpha;
}
dest_scan ++;
dst_alpha_scan ++;
src_scan += 3;
continue;
}
FX_BYTE src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha == 0) {
dest_scan ++;
dst_alpha_scan ++;
src_scan += 3;
continue;
}
*dst_alpha_scan = FXDIB_ALPHA_UNION(back_alpha, src_alpha);
int alpha_ratio = src_alpha * 255 / (*dst_alpha_scan);
FX_BYTE gray;
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
dst_alpha_scan++;
src_scan += 3;
}
} else
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = *dst_alpha_scan;
if (back_alpha == 0) {
int src_alpha = src_scan[3];
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, dest_scan, src_scan, 1);
} else {
*dest_scan = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dst_alpha_scan = src_alpha;
}
dest_scan ++;
dst_alpha_scan ++;
src_scan += 4;
continue;
}
FX_BYTE src_alpha = src_scan[3];
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha == 0) {
dest_scan ++;
dst_alpha_scan ++;
src_scan += 4;
continue;
}
*dst_alpha_scan = FXDIB_ALPHA_UNION(back_alpha, src_alpha);
int alpha_ratio = src_alpha * 255 / (*dst_alpha_scan);
FX_BYTE gray;
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
dst_alpha_scan++;
src_scan += 4;
}
}
inline void _CompositeRow_Argb2Gray(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = NULL;
FX_BYTE gray;
if (pIccTransform) {
pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
}
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
if (src_alpha_scan) {
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
}
dest_scan ++;
src_scan += 3;
}
} else
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = src_scan[3];
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
}
dest_scan ++;
src_scan += 4;
}
return;
}
if (src_alpha_scan) {
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
}
dest_scan ++;
src_scan += 3;
}
} else
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = src_scan[3];
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
}
dest_scan ++;
src_scan += 4;
}
}
inline void _CompositeRow_Rgb2Gray(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_Bpp, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan,
void* pIccTransform)
{
ICodec_IccModule* pIccModule = NULL;
FX_BYTE gray;
if (pIccTransform) {
pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
}
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, clip_scan[col]);
} else {
*dest_scan = gray;
}
dest_scan ++;
src_scan += src_Bpp;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, clip_scan[col]);
} else {
*dest_scan = gray;
}
dest_scan ++;
src_scan += src_Bpp;
}
}
void _CompositeRow_Rgb2Graya(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_Bpp, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = NULL;
if (pIccTransform) {
pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
}
if (blend_type) {
int blended_color;
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
for (int col = 0; col < pixel_count; col ++) {
int back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, dest_scan, src_scan, 1);
} else {
*dest_scan = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
dest_scan ++;
dest_alpha_scan++;
src_scan += src_Bpp;
continue;
}
int src_alpha = 255;
if (clip_scan) {
src_alpha = clip_scan[col];
}
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
src_scan += src_Bpp;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
FX_BYTE gray;
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
src_scan += src_Bpp;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
int src_alpha = 255;
if (clip_scan) {
src_alpha = clip_scan[col];
}
if (src_alpha == 255) {
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, dest_scan, src_scan, 1);
} else {
*dest_scan = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
dest_scan ++;
*dest_alpha_scan++ = 255;
src_scan += src_Bpp;
continue;
}
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
src_scan += src_Bpp;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
FX_BYTE gray;
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, &gray, src_scan, 1);
} else {
gray = FXRGB2GRAY(src_scan[2], src_scan[1], *src_scan);
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
src_scan += src_Bpp;
}
}
void _CompositeRow_Argb2Argb(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int pixel_count, int blend_type, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, FX_LPCBYTE src_alpha_scan)
{
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
if (dest_alpha_scan == NULL) {
if (src_alpha_scan == NULL) {
FX_BYTE back_alpha = 0;
for (int col = 0; col < pixel_count; col ++) {
back_alpha = dest_scan[3];
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * src_scan[3] / 255;
FXARGB_SETDIB(dest_scan, (FXARGB_GETDIB(src_scan) & 0xffffff) | (src_alpha << 24));
} else {
FXARGB_COPY(dest_scan, src_scan);
}
dest_scan += 4;
src_scan += 4;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = src_scan[3];
} else {
src_alpha = clip_scan[col] * src_scan[3] / 255;
}
if (src_alpha == 0) {
dest_scan += 4;
src_scan += 4;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
if (blend_type) {
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, *src_scan);
blended = FXDIB_ALPHA_MERGE(*src_scan, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, alpha_ratio);
}
dest_scan ++;
src_scan ++;
}
dest_scan ++;
src_scan ++;
}
} else {
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = dest_scan[3];
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * (*src_alpha_scan) / 255;
FXARGB_SETDIB(dest_scan, FXARGB_MAKE((src_alpha << 24), src_scan[2], src_scan[1], *src_scan));
} else {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE((*src_alpha_scan << 24), src_scan[2], src_scan[1], *src_scan));
}
dest_scan += 4;
src_scan += 3;
src_alpha_scan ++;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = *src_alpha_scan ++;
} else {
src_alpha = clip_scan[col] * (*src_alpha_scan ++) / 255;
}
if (src_alpha == 0) {
dest_scan += 4;
src_scan += 3;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
if (blend_type) {
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, *src_scan);
blended = FXDIB_ALPHA_MERGE(*src_scan, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, alpha_ratio);
}
dest_scan ++;
src_scan ++;
}
dest_scan ++;
}
}
} else {
if (src_alpha_scan) {
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * (*src_alpha_scan) / 255;
*dest_alpha_scan = src_alpha;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
} else {
*dest_alpha_scan = *src_alpha_scan;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
}
dest_alpha_scan ++;
src_alpha_scan ++;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = *src_alpha_scan ++;
} else {
src_alpha = clip_scan[col] * (*src_alpha_scan ++) / 255;
}
if (src_alpha == 0) {
dest_scan += 3;
src_scan += 3;
dest_alpha_scan ++;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
if (blend_type) {
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, *src_scan);
blended = FXDIB_ALPHA_MERGE(*src_scan, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, alpha_ratio);
}
dest_scan ++;
src_scan ++;
}
}
} else {
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * src_scan[3] / 255;
*dest_alpha_scan = src_alpha;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
} else {
*dest_alpha_scan = src_scan[3];
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
}
dest_alpha_scan ++;
src_scan ++;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = src_scan[3];
} else {
src_alpha = clip_scan[col] * src_scan[3] / 255;
}
if (src_alpha == 0) {
dest_scan += 3;
src_scan += 4;
dest_alpha_scan ++;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
if (blend_type) {
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, *src_scan);
blended = FXDIB_ALPHA_MERGE(*src_scan, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, alpha_ratio);
}
dest_scan ++;
src_scan ++;
}
src_scan ++;
}
}
}
}
void _CompositeRow_Rgb2Argb_Blend_NoClip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int src_Bpp,
FX_LPBYTE dest_alpha_scan)
{
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int src_gap = src_Bpp - 3;
if (dest_alpha_scan == NULL) {
for (int col = 0; col < width; col ++) {
FX_BYTE back_alpha = dest_scan[3];
if (back_alpha == 0) {
if (src_Bpp == 4) {
FXARGB_SETDIB(dest_scan, 0xff000000 | FXARGB_GETDIB(src_scan));
} else {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(0xff, src_scan[2], src_scan[1], src_scan[0]));
}
dest_scan += 4;
src_scan += src_Bpp;
continue;
}
dest_scan[3] = 0xff;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int src_color = *src_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, src_color);
*dest_scan = FXDIB_ALPHA_MERGE(src_color, blended, back_alpha);
dest_scan ++;
src_scan ++;
}
dest_scan ++;
src_scan += src_gap;
}
} else {
for (int col = 0; col < width; col ++) {
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_alpha_scan++ = 0xff;
src_scan += src_gap;
continue;
}
*dest_alpha_scan++ = 0xff;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int src_color = *src_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, src_color);
*dest_scan = FXDIB_ALPHA_MERGE(src_color, blended, back_alpha);
dest_scan ++;
src_scan ++;
}
src_scan += src_gap;
}
}
}
inline void _CompositeRow_Rgb2Argb_Blend_Clip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int src_Bpp, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan)
{
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int src_gap = src_Bpp - 3;
if (dest_alpha_scan == NULL) {
for (int col = 0; col < width; col ++) {
int src_alpha = *clip_scan ++;
FX_BYTE back_alpha = dest_scan[3];
if (back_alpha == 0) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
src_scan += src_gap;
dest_scan ++;
continue;
}
if (src_alpha == 0) {
dest_scan += 4;
src_scan += src_Bpp;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int src_color = *src_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, src_color);
blended = FXDIB_ALPHA_MERGE(src_color, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
dest_scan ++;
src_scan ++;
}
dest_scan ++;
src_scan += src_gap;
}
} else {
for (int col = 0; col < width; col ++) {
int src_alpha = *clip_scan ++;
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
src_scan += src_gap;
dest_alpha_scan++;
continue;
}
if (src_alpha == 0) {
dest_scan += 3;
dest_alpha_scan++;
src_scan += src_Bpp;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int src_color = *src_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, src_color);
blended = FXDIB_ALPHA_MERGE(src_color, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
dest_scan ++;
src_scan ++;
}
src_scan += src_gap;
}
}
}
inline void _CompositeRow_Rgb2Argb_NoBlend_Clip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int src_Bpp, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan)
{
int src_gap = src_Bpp - 3;
if (dest_alpha_scan == NULL) {
for (int col = 0; col < width; col ++) {
int src_alpha = clip_scan[col];
if (src_alpha == 255) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = 255;
src_scan += src_gap;
continue;
}
if (src_alpha == 0) {
dest_scan += 4;
src_scan += src_Bpp;
continue;
}
int back_alpha = dest_scan[3];
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
for (int color = 0; color < 3; color ++) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, alpha_ratio);
dest_scan ++;
src_scan ++;
}
dest_scan ++;
src_scan += src_gap;
}
} else {
for (int col = 0; col < width; col ++) {
int src_alpha = clip_scan[col];
if (src_alpha == 255) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_alpha_scan++ = 255;
src_scan += src_gap;
continue;
}
if (src_alpha == 0) {
dest_scan += 3;
dest_alpha_scan ++;
src_scan += src_Bpp;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
for (int color = 0; color < 3; color ++) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, alpha_ratio);
dest_scan ++;
src_scan ++;
}
src_scan += src_gap;
}
}
}
inline void _CompositeRow_Rgb2Argb_NoBlend_NoClip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int src_Bpp,
FX_LPBYTE dest_alpha_scan)
{
if (dest_alpha_scan == NULL) {
for (int col = 0; col < width; col ++) {
if (src_Bpp == 4) {
FXARGB_SETDIB(dest_scan, 0xff000000 | FXARGB_GETDIB(src_scan));
} else {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(0xff, src_scan[2], src_scan[1], src_scan[0]));
}
dest_scan += 4;
src_scan += src_Bpp;
}
} else {
int src_gap = src_Bpp - 3;
for (int col = 0; col < width; col ++) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_alpha_scan++ = 0xff;
src_scan += src_gap;
}
}
}
inline void _CompositeRow_Argb2Rgb_Blend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int dest_Bpp, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan)
{
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int dest_gap = dest_Bpp - 3;
if (src_alpha_scan == NULL) {
for (int col = 0; col < width; col ++) {
FX_BYTE src_alpha;
if (clip_scan) {
src_alpha = src_scan[3] * (*clip_scan++) / 255;
} else {
src_alpha = src_scan[3];
}
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_scan += 4;
continue;
}
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int back_color = *dest_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, back_color, *src_scan);
*dest_scan = FXDIB_ALPHA_MERGE(back_color, blended, src_alpha);
dest_scan ++;
src_scan ++;
}
dest_scan += dest_gap;
src_scan ++;
}
} else {
for (int col = 0; col < width; col ++) {
FX_BYTE src_alpha;
if (clip_scan) {
src_alpha = (*src_alpha_scan++) * (*clip_scan++) / 255;
} else {
src_alpha = *src_alpha_scan++;
}
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_scan += 3;
continue;
}
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int back_color = *dest_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, back_color, *src_scan);
*dest_scan = FXDIB_ALPHA_MERGE(back_color, blended, src_alpha);
dest_scan ++;
src_scan ++;
}
dest_scan += dest_gap;
}
}
}
inline void _CompositeRow_Argb2Rgb_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int dest_Bpp, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan)
{
int dest_gap = dest_Bpp - 3;
if (src_alpha_scan == NULL) {
for (int col = 0; col < width; col ++) {
FX_BYTE src_alpha;
if (clip_scan) {
src_alpha = src_scan[3] * (*clip_scan++) / 255;
} else {
src_alpha = src_scan[3];
}
if (src_alpha == 255) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
dest_scan += dest_gap;
src_scan ++;
continue;
}
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_scan += 4;
continue;
}
for (int color = 0; color < 3; color ++) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, src_alpha);
dest_scan ++;
src_scan ++;
}
dest_scan += dest_gap;
src_scan ++;
}
} else {
for (int col = 0; col < width; col ++) {
FX_BYTE src_alpha;
if (clip_scan) {
src_alpha = (*src_alpha_scan++) * (*clip_scan++) / 255;
} else {
src_alpha = *src_alpha_scan++;
}
if (src_alpha == 255) {
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
*dest_scan++ = *src_scan++;
dest_scan += dest_gap;
continue;
}
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_scan += 3;
continue;
}
for (int color = 0; color < 3; color ++) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, src_alpha);
dest_scan ++;
src_scan ++;
}
dest_scan += dest_gap;
}
}
}
inline void _CompositeRow_Rgb2Rgb_Blend_NoClip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int dest_Bpp, int src_Bpp)
{
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int dest_gap = dest_Bpp - 3;
int src_gap = src_Bpp - 3;
for (int col = 0; col < width; col ++) {
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int back_color = *dest_scan;
int src_color = *src_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, back_color, src_color);
*dest_scan = blended;
dest_scan ++;
src_scan ++;
}
dest_scan += dest_gap;
src_scan += src_gap;
}
}
inline void _CompositeRow_Rgb2Rgb_Blend_Clip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int dest_Bpp, int src_Bpp, FX_LPCBYTE clip_scan)
{
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int dest_gap = dest_Bpp - 3;
int src_gap = src_Bpp - 3;
for (int col = 0; col < width; col ++) {
FX_BYTE src_alpha = *clip_scan ++;
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_scan += src_Bpp;
continue;
}
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int src_color = *src_scan;
int back_color = *dest_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, back_color, src_color);
*dest_scan = FXDIB_ALPHA_MERGE(back_color, blended, src_alpha);
dest_scan ++;
src_scan ++;
}
dest_scan += dest_gap;
src_scan += src_gap;
}
}
inline void _CompositeRow_Rgb2Rgb_NoBlend_NoClip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int dest_Bpp, int src_Bpp)
{
if (dest_Bpp == src_Bpp) {
FXSYS_memcpy32(dest_scan, src_scan, width * dest_Bpp);
return;
}
for (int col = 0; col < width; col ++) {
dest_scan[0] = src_scan[0];
dest_scan[1] = src_scan[1];
dest_scan[2] = src_scan[2];
dest_scan += dest_Bpp;
src_scan += src_Bpp;
}
}
inline void _CompositeRow_Rgb2Rgb_NoBlend_Clip(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int dest_Bpp, int src_Bpp, FX_LPCBYTE clip_scan)
{
for (int col = 0; col < width; col ++) {
int src_alpha = clip_scan[col];
if (src_alpha == 255) {
dest_scan[0] = src_scan[0];
dest_scan[1] = src_scan[1];
dest_scan[2] = src_scan[2];
} else if (src_alpha) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, src_alpha);
dest_scan ++;
src_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, src_alpha);
dest_scan ++;
src_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_scan, src_alpha);
dest_scan += dest_Bpp - 2;
src_scan += src_Bpp - 2;
continue;
}
dest_scan += dest_Bpp;
src_scan += src_Bpp;
}
}
void _CompositeRow_Argb2Argb_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int pixel_count, int blend_type, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, FX_LPCBYTE src_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
FX_LPBYTE dp = src_cache_scan;
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_alpha_scan) {
if (dest_alpha_scan == NULL) {
for (int col = 0; col < pixel_count; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
dp[3] = *src_alpha_scan++;
src_scan += 3;
dp += 4;
}
src_alpha_scan = NULL;
} else {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, pixel_count);
}
} else {
if (dest_alpha_scan == NULL) {
for (int col = 0; col < pixel_count; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
dp[3] = src_scan[3];
src_scan += 4;
dp += 4;
}
} else {
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
for (int col = 0; col < pixel_count; col ++) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, 1);
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * src_scan[3] / 255;
*dest_alpha_scan = src_alpha;
*dest_scan++ = *src_cache_scan++;
*dest_scan++ = *src_cache_scan++;
*dest_scan++ = *src_cache_scan++;
} else {
*dest_alpha_scan = src_scan[3];
*dest_scan++ = *src_cache_scan++;
*dest_scan++ = *src_cache_scan++;
*dest_scan++ = *src_cache_scan++;
}
dest_alpha_scan ++;
src_scan += 4;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = src_scan[3];
} else {
src_alpha = clip_scan[col] * src_scan[3] / 255;
}
src_scan += 4;
if (src_alpha == 0) {
dest_scan += 3;
src_cache_scan += 3;
dest_alpha_scan ++;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_cache_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
if (blend_type) {
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, *dest_scan, *src_cache_scan);
blended = FXDIB_ALPHA_MERGE(*src_cache_scan, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_cache_scan, alpha_ratio);
}
dest_scan ++;
src_cache_scan ++;
}
}
return;
}
}
_CompositeRow_Argb2Argb(dest_scan, src_cache_scan, pixel_count, blend_type, clip_scan, dest_alpha_scan, src_alpha_scan);
}
void _CompositeRow_Rgb2Argb_Blend_NoClip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int src_Bpp,
FX_LPBYTE dest_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Argb_Blend_NoClip(dest_scan, src_cache_scan, width, blend_type, 3, dest_alpha_scan);
}
inline void _CompositeRow_Rgb2Argb_Blend_Clip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int src_Bpp, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Argb_Blend_Clip(dest_scan, src_cache_scan, width, blend_type, 3, clip_scan, dest_alpha_scan);
}
inline void _CompositeRow_Rgb2Argb_NoBlend_Clip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int src_Bpp, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Argb_NoBlend_Clip(dest_scan, src_cache_scan, width, 3, clip_scan, dest_alpha_scan);
}
inline void _CompositeRow_Rgb2Argb_NoBlend_NoClip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int src_Bpp,
FX_LPBYTE dest_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Argb_NoBlend_NoClip(dest_scan, src_cache_scan, width, 3, dest_alpha_scan);
}
inline void _CompositeRow_Argb2Rgb_Blend_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int dest_Bpp, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_alpha_scan) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
int blended_colors[3];
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int dest_gap = dest_Bpp - 3;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, 1);
FX_BYTE src_alpha;
if (clip_scan) {
src_alpha = src_scan[3] * (*clip_scan++) / 255;
} else {
src_alpha = src_scan[3];
}
src_scan += 4;
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_cache_scan += 3;
continue;
}
if (bNonseparableBlend) {
_RGB_Blend(blend_type, src_cache_scan, dest_scan, blended_colors);
}
for (int color = 0; color < 3; color ++) {
int back_color = *dest_scan;
int blended = bNonseparableBlend ? blended_colors[color] :
_BLEND(blend_type, back_color, *src_cache_scan);
*dest_scan = FXDIB_ALPHA_MERGE(back_color, blended, src_alpha);
dest_scan ++;
src_cache_scan ++;
}
dest_scan += dest_gap;
}
return;
}
_CompositeRow_Argb2Rgb_Blend(dest_scan, src_cache_scan, width, blend_type, dest_Bpp, clip_scan, src_alpha_scan);
}
inline void _CompositeRow_Argb2Rgb_NoBlend_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int dest_Bpp, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan, FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_alpha_scan) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
int dest_gap = dest_Bpp - 3;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, 1);
FX_BYTE src_alpha;
if (clip_scan) {
src_alpha = src_scan[3] * (*clip_scan++) / 255;
} else {
src_alpha = src_scan[3];
}
src_scan += 4;
if (src_alpha == 255) {
*dest_scan++ = *src_cache_scan++;
*dest_scan++ = *src_cache_scan++;
*dest_scan++ = *src_cache_scan++;
dest_scan += dest_gap;
continue;
}
if (src_alpha == 0) {
dest_scan += dest_Bpp;
src_cache_scan += 3;
continue;
}
for (int color = 0; color < 3; color ++) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, *src_cache_scan, src_alpha);
dest_scan ++;
src_cache_scan ++;
}
dest_scan += dest_gap;
}
return;
}
_CompositeRow_Argb2Rgb_NoBlend(dest_scan, src_cache_scan, width, dest_Bpp, clip_scan, src_alpha_scan);
}
inline void _CompositeRow_Rgb2Rgb_Blend_NoClip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int dest_Bpp, int src_Bpp,
FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Rgb_Blend_NoClip(dest_scan, src_cache_scan, width, blend_type, dest_Bpp, 3);
}
inline void _CompositeRow_Rgb2Rgb_Blend_Clip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int blend_type, int dest_Bpp, int src_Bpp, FX_LPCBYTE clip_scan,
FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Rgb_Blend_Clip(dest_scan, src_cache_scan, width, blend_type, dest_Bpp, 3, clip_scan);
}
inline void _CompositeRow_Rgb2Rgb_NoBlend_NoClip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int dest_Bpp, int src_Bpp,
FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Rgb_NoBlend_NoClip(dest_scan, src_cache_scan, width, dest_Bpp, 3);
}
inline void _CompositeRow_Rgb2Rgb_NoBlend_Clip_Transform(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int dest_Bpp, int src_Bpp, FX_LPCBYTE clip_scan,
FX_LPBYTE src_cache_scan, void* pIccTransform)
{
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
if (src_Bpp == 3) {
pIccModule->TranslateScanline(pIccTransform, src_cache_scan, src_scan, width);
} else {
FX_LPBYTE dp = src_cache_scan;
for (int col = 0; col < width; col ++) {
pIccModule->TranslateScanline(pIccTransform, dp, src_scan, 1);
src_scan += 4;
dp += 3;
}
}
_CompositeRow_Rgb2Rgb_NoBlend_Clip(dest_scan, src_cache_scan, width, dest_Bpp, 3, clip_scan);
}
inline void _CompositeRow_8bppPal2Gray(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, FX_LPCBYTE pPalette, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan)
{
if (src_alpha_scan) {
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
if (src_alpha) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
} else {
*dest_scan = gray;
}
dest_scan ++;
src_scan ++;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
int src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
} else {
*dest_scan = gray;
}
dest_scan ++;
src_scan ++;
}
} else {
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, clip_scan[col]);
} else {
*dest_scan = gray;
}
dest_scan ++;
src_scan ++;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, clip_scan[col]);
} else {
*dest_scan = gray;
}
dest_scan ++;
src_scan ++;
}
}
}
inline void _CompositeRow_8bppPal2Graya(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, FX_LPCBYTE pPalette, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, FX_LPCBYTE src_alpha_scan)
{
if (src_alpha_scan) {
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
src_scan ++;
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
int src_alpha = *src_alpha_scan ++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
*dest_scan = gray;
*dest_alpha_scan = src_alpha;
}
dest_scan ++;
dest_alpha_scan ++;
continue;
}
FX_BYTE src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
continue;
}
*dest_alpha_scan = back_alpha + src_alpha - back_alpha * src_alpha / 255;
int alpha_ratio = src_alpha * 255 / (*dest_alpha_scan);
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_alpha_scan ++;
dest_scan ++;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
src_scan ++;
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
int src_alpha = *src_alpha_scan ++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha) {
*dest_scan = gray;
*dest_alpha_scan = src_alpha;
}
dest_scan ++;
dest_alpha_scan ++;
continue;
}
FX_BYTE src_alpha = *src_alpha_scan++;
if (clip_scan) {
src_alpha = clip_scan[col] * src_alpha / 255;
}
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
continue;
}
*dest_alpha_scan = back_alpha + src_alpha - back_alpha * src_alpha / 255;
int alpha_ratio = src_alpha * 255 / (*dest_alpha_scan);
dest_alpha_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
}
} else {
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
src_scan ++;
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = gray;
*dest_alpha_scan++ = 255;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = pPalette[*src_scan];
src_scan ++;
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = gray;
*dest_alpha_scan++ = 255;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
}
}
}
inline void _CompositeRow_1bppPal2Gray(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_left,
FX_LPCBYTE pPalette, int pixel_count, int blend_type, FX_LPCBYTE clip_scan)
{
int reset_gray = pPalette[0];
int set_gray = pPalette[1];
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) ? set_gray : reset_gray;
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, clip_scan[col]);
} else {
*dest_scan = gray;
}
dest_scan ++;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) ? set_gray : reset_gray;
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, clip_scan[col]);
} else {
*dest_scan = gray;
}
dest_scan ++;
}
}
inline void _CompositeRow_1bppPal2Graya(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_left,
FX_LPCBYTE pPalette, int pixel_count, int blend_type, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan)
{
int reset_gray = pPalette[0];
int set_gray = pPalette[1];
if (blend_type) {
FX_BOOL bNonseparableBlend = blend_type >= FXDIB_BLEND_NONSEPARABLE;
int blended_color;
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) ? set_gray : reset_gray;
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = gray;
*dest_alpha_scan ++ = 255;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (bNonseparableBlend) {
blended_color = blend_type == FXDIB_BLEND_LUMINOSITY ? gray : *dest_scan;
}
gray = bNonseparableBlend ? blended_color : _BLEND(blend_type, *dest_scan, gray);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
}
return;
}
for (int col = 0; col < pixel_count; col ++) {
FX_BYTE gray = (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) ? set_gray : reset_gray;
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = gray;
*dest_alpha_scan ++ = 255;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan ++;
dest_alpha_scan ++;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, alpha_ratio);
dest_scan ++;
}
}
inline void _CompositeRow_8bppRgb2Rgb_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, FX_DWORD* pPalette, int pixel_count,
int DestBpp, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan)
{
if (src_alpha_scan) {
int dest_gap = DestBpp - 3;
FX_ARGB argb = 0;
for (int col = 0; col < pixel_count; col ++) {
argb = pPalette[*src_scan];
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
src_scan ++;
FX_BYTE src_alpha = 0;
if (clip_scan) {
src_alpha = (*src_alpha_scan++) * (*clip_scan++) / 255;
} else {
src_alpha = *src_alpha_scan++;
}
if (src_alpha == 255) {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
dest_scan += dest_gap;
continue;
}
if (src_alpha == 0) {
dest_scan += DestBpp;
continue;
}
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, src_alpha);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, src_alpha);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, src_alpha);
dest_scan ++;
dest_scan += dest_gap;
}
} else {
FX_ARGB argb = 0;
for (int col = 0; col < pixel_count; col ++) {
argb = pPalette[*src_scan];
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, clip_scan[col]);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, clip_scan[col]);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, clip_scan[col]);
dest_scan ++;
} else {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
}
if (DestBpp == 4) {
dest_scan++;
}
src_scan ++;
}
}
}
inline void _CompositeRow_1bppRgb2Rgb_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_left,
FX_DWORD* pPalette, int pixel_count, int DestBpp, FX_LPCBYTE clip_scan)
{
int reset_r, reset_g, reset_b;
int set_r, set_g, set_b;
reset_r = FXARGB_R(pPalette[0]);
reset_g = FXARGB_G(pPalette[0]);
reset_b = FXARGB_B(pPalette[0]);
set_r = FXARGB_R(pPalette[1]);
set_g = FXARGB_G(pPalette[1]);
set_b = FXARGB_B(pPalette[1]);
for (int col = 0; col < pixel_count; col ++) {
int src_r, src_g, src_b;
if (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) {
src_r = set_r;
src_g = set_g;
src_b = set_b;
} else {
src_r = reset_r;
src_g = reset_g;
src_b = reset_b;
}
if (clip_scan && clip_scan[col] < 255) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, clip_scan[col]);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, clip_scan[col]);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, clip_scan[col]);
dest_scan ++;
} else {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
}
if (DestBpp == 4) {
dest_scan++;
}
}
}
inline void _CompositeRow_8bppRgb2Argb_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width,
FX_DWORD* pPalette, FX_LPCBYTE clip_scan,
FX_LPCBYTE src_alpha_scan)
{
if (src_alpha_scan) {
for (int col = 0; col < width; col ++) {
FX_ARGB argb = pPalette[*src_scan];
src_scan ++;
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
FX_BYTE back_alpha = dest_scan[3];
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * (*src_alpha_scan) / 255;
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(src_alpha, src_r, src_g, src_b));
} else {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(*src_alpha_scan, src_r, src_g, src_b));
}
dest_scan += 4;
src_alpha_scan ++;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = *src_alpha_scan ++;
} else {
src_alpha = clip_scan[col] * (*src_alpha_scan++) / 255;
}
if (src_alpha == 0) {
dest_scan += 4;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan ++;
dest_scan ++;
}
} else
for (int col = 0; col < width; col ++) {
FX_ARGB argb = pPalette[*src_scan];
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
*dest_scan++ = 255;
src_scan ++;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan += 4;
src_scan ++;
continue;
}
int back_alpha = dest_scan[3];
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan ++;
dest_scan ++;
src_scan ++;
}
}
void _CompositeRow_8bppRgb2Rgba_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width,
FX_DWORD* pPalette, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan, FX_LPCBYTE src_alpha_scan)
{
if (src_alpha_scan) {
for (int col = 0; col < width; col ++) {
FX_ARGB argb = pPalette[*src_scan];
src_scan ++;
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
if (clip_scan) {
int src_alpha = clip_scan[col] * (*src_alpha_scan) / 255;
*dest_alpha_scan ++ = src_alpha;
} else {
*dest_alpha_scan ++ = *src_alpha_scan;
}
*dest_scan ++ = src_b;
*dest_scan ++ = src_g;
*dest_scan ++ = src_r;
src_alpha_scan ++;
continue;
}
FX_BYTE src_alpha;
if (clip_scan == NULL) {
src_alpha = *src_alpha_scan++;
} else {
src_alpha = clip_scan[col] * (*src_alpha_scan++) / 255;
}
if (src_alpha == 0) {
dest_scan += 3;
dest_alpha_scan ++;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan ++;
}
} else
for (int col = 0; col < width; col ++) {
FX_ARGB argb = pPalette[*src_scan];
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
*dest_alpha_scan++ = 255;
src_scan ++;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan += 3;
dest_alpha_scan ++;
src_scan ++;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan ++;
src_scan ++;
}
}
inline void _CompositeRow_1bppRgb2Argb_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_left, int width,
FX_DWORD* pPalette, FX_LPCBYTE clip_scan)
{
int reset_r, reset_g, reset_b;
int set_r, set_g, set_b;
reset_r = FXARGB_R(pPalette[0]);
reset_g = FXARGB_G(pPalette[0]);
reset_b = FXARGB_B(pPalette[0]);
set_r = FXARGB_R(pPalette[1]);
set_g = FXARGB_G(pPalette[1]);
set_b = FXARGB_B(pPalette[1]);
for (int col = 0; col < width; col ++) {
int src_r, src_g, src_b;
if (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) {
src_r = set_r;
src_g = set_g;
src_b = set_b;
} else {
src_r = reset_r;
src_g = reset_g;
src_b = reset_b;
}
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
*dest_scan++ = 255;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan += 4;
continue;
}
int back_alpha = dest_scan[3];
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan ++;
dest_scan ++;
}
}
void _CompositeRow_1bppRgb2Rgba_NoBlend(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int src_left, int width,
FX_DWORD* pPalette, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan)
{
int reset_r, reset_g, reset_b;
int set_r, set_g, set_b;
reset_r = FXARGB_R(pPalette[0]);
reset_g = FXARGB_G(pPalette[0]);
reset_b = FXARGB_B(pPalette[0]);
set_r = FXARGB_R(pPalette[1]);
set_g = FXARGB_G(pPalette[1]);
set_b = FXARGB_B(pPalette[1]);
for (int col = 0; col < width; col ++) {
int src_r, src_g, src_b;
if (src_scan[(col + src_left) / 8] & (1 << (7 - (col + src_left) % 8))) {
src_r = set_r;
src_g = set_g;
src_b = set_b;
} else {
src_r = reset_r;
src_g = reset_g;
src_b = reset_b;
}
if (clip_scan == NULL || clip_scan[col] == 255) {
*dest_scan++ = src_b;
*dest_scan++ = src_g;
*dest_scan++ = src_r;
*dest_alpha_scan++ = 255;
continue;
}
int src_alpha = clip_scan[col];
if (src_alpha == 0) {
dest_scan += 3;
dest_alpha_scan ++;
continue;
}
int back_alpha = *dest_alpha_scan;
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan ++;
}
}
void _CompositeRow_ByteMask2Argb(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int mask_alpha, int src_r, int src_g, int src_b, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan)
{
for (int col = 0; col < pixel_count; col ++) {
int src_alpha;
if (clip_scan) {
src_alpha = mask_alpha * clip_scan[col] * src_scan[col] / 255 / 255;
} else {
src_alpha = mask_alpha * src_scan[col] / 255;
}
FX_BYTE back_alpha = dest_scan[3];
if (back_alpha == 0) {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(src_alpha, src_r, src_g, src_b));
dest_scan += 4;
continue;
}
if (src_alpha == 0) {
dest_scan += 4;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (blend_type >= FXDIB_BLEND_NONSEPARABLE) {
int blended_colors[3];
FX_BYTE src_scan[3];
src_scan[0] = src_b;
src_scan[1] = src_g;
src_scan[2] = src_r;
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended_colors[0], alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended_colors[1], alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended_colors[2], alpha_ratio);
} else if (blend_type) {
int blended = _BLEND(blend_type, *dest_scan, src_b);
blended = FXDIB_ALPHA_MERGE(src_b, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
dest_scan ++;
blended = _BLEND(blend_type, *dest_scan, src_g);
blended = FXDIB_ALPHA_MERGE(src_g, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
dest_scan ++;
blended = _BLEND(blend_type, *dest_scan, src_r);
blended = FXDIB_ALPHA_MERGE(src_r, blended, back_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended, alpha_ratio);
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
}
dest_scan += 2;
}
}
void _CompositeRow_ByteMask2Rgba(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int mask_alpha, int src_r, int src_g, int src_b, int pixel_count,
int blend_type, FX_LPCBYTE clip_scan,
FX_LPBYTE dest_alpha_scan)
{
for (int col = 0; col < pixel_count; col ++) {
int src_alpha;
if (clip_scan) {
src_alpha = mask_alpha * clip_scan[col] * src_scan[col] / 255 / 255;
} else {
src_alpha = mask_alpha * src_scan[col] / 255;
}
FX_BYTE back_alpha = *dest_alpha_scan;
if (back_alpha == 0) {
*dest_scan ++ = src_b;
*dest_scan ++ = src_g;
*dest_scan ++ = src_r;
*dest_alpha_scan ++ = src_alpha;
continue;
}
if (src_alpha == 0) {
dest_scan += 3;
dest_alpha_scan ++;
continue;
}
FX_BYTE dest_alpha = back_alpha + src_alpha - back_alpha * src_alpha / 255;
*dest_alpha_scan ++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (blend_type >= FXDIB_BLEND_NONSEPARABLE) {
int blended_colors[3];
FX_BYTE src_scan[3];
src_scan[0] = src_b;
src_scan[1] = src_g;
src_scan[2] = src_r;
_RGB_Blend(blend_type, src_scan, dest_scan, blended_colors);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended_colors[0], alpha_ratio);
dest_scan ++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, blended_colors[1], alpha_ratio);