author | hgs |
Wed, 24 Mar 2010 18:04:17 -0500 | |
changeset 16 | 8e837d1bf446 |
parent 0 | 0e761a78d257 |
child 30 | 7e817e7e631c |
permissions | -rw-r--r-- |
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/* |
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* Image Scaling Functions (4 tap) |
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* Copyright (c) 2005 David A. Schleef <ds@schleef.org> |
16 | 4 |
* Copyright (c) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "vs_image.h" |
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#include "vs_scanline.h" |
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#include "vs_4tap.h" |
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#include <liboil/liboil.h> |
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#ifdef __SYMBIAN32__ |
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#include <liboil/globals.h> |
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#endif |
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#include <math.h> |
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#define SHIFT 10 |
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#define MAX(a,b) (((a) > (b)) ? (a) : (b)) |
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#define MIN(a,b) (((a) < (b)) ? (a) : (b)) |
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#define CLAMP(x,a,b) MAX(MIN((x),(b)),(a)) |
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#ifndef M_PI |
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#define M_PI 3.14159265358979323846 |
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#endif |
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#ifdef WIN32 |
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#define rint(x) (floor((x)+0.5)) |
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#endif |
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static int16_t vs_4tap_taps[256][4]; |
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static double |
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vs_4tap_func (double x) |
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{ |
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#if 0 |
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if (x < -1) |
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return 0; |
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if (x > 1) |
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return 0; |
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if (x < 0) |
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return 1 + x; |
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return 1 - x; |
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#endif |
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#if 0 |
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if (x == 0) |
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return 1; |
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return sin (M_PI * x) / (M_PI * x) * (1 - 0.25 * x * x); |
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#endif |
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#if 1 |
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if (x == 0) |
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return 1; |
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return sin (M_PI * x) / (M_PI * x); |
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#endif |
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} |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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void |
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vs_4tap_init (void) |
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{ |
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int i; |
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double a, b, c, d; |
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double sum; |
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|
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for (i = 0; i < 256; i++) { |
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a = vs_4tap_func (-1 - i / 256.0); |
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b = vs_4tap_func (0 - i / 256.0); |
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c = vs_4tap_func (1 - i / 256.0); |
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d = vs_4tap_func (2 - i / 256.0); |
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sum = a + b + c + d; |
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|
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vs_4tap_taps[i][0] = rint ((1 << SHIFT) * (a / sum)); |
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vs_4tap_taps[i][1] = rint ((1 << SHIFT) * (b / sum)); |
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vs_4tap_taps[i][2] = rint ((1 << SHIFT) * (c / sum)); |
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vs_4tap_taps[i][3] = rint ((1 << SHIFT) * (d / sum)); |
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} |
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} |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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|
108 |
|
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|
109 |
|
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110 |
void |
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111 |
vs_scanline_resample_4tap_Y (uint8_t * dest, uint8_t * src, |
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112 |
int n, int src_width, int *xacc, int increment) |
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113 |
{ |
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114 |
int i; |
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115 |
int j; |
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int acc; |
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int x; |
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118 |
int y; |
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119 |
|
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acc = *xacc; |
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for (i = 0; i < n; i++) { |
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j = acc >> 16; |
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x = (acc & 0xff00) >> 8; |
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if (j - 1 >= 0 && j + 2 < src_width) { |
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y = vs_4tap_taps[x][0] * src[MAX (j - 1, 0)]; |
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y += vs_4tap_taps[x][1] * src[j]; |
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y += vs_4tap_taps[x][2] * src[j + 1]; |
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y += vs_4tap_taps[x][3] * src[j + 2]; |
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129 |
} else { |
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y = vs_4tap_taps[x][0] * src[CLAMP (j - 1, 0, src_width - 1)]; |
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131 |
y += vs_4tap_taps[x][1] * src[CLAMP (j, 0, src_width - 1)]; |
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y += vs_4tap_taps[x][2] * src[CLAMP (j + 1, 0, src_width - 1)]; |
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y += vs_4tap_taps[x][3] * src[CLAMP (j + 2, 0, src_width - 1)]; |
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134 |
} |
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y += (1 << (SHIFT - 1)); |
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dest[i] = CLAMP (y >> SHIFT, 0, 255); |
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acc += increment; |
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138 |
} |
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*xacc = acc; |
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140 |
} |
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141 |
#ifdef __SYMBIAN32__ |
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142 |
EXPORT_C |
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#endif |
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144 |
|
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|
145 |
|
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146 |
void |
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vs_scanline_merge_4tap_Y (uint8_t * dest, uint8_t * src1, uint8_t * src2, |
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148 |
uint8_t * src3, uint8_t * src4, int n, int acc) |
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149 |
{ |
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150 |
int i; |
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151 |
int y; |
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152 |
int a, b, c, d; |
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153 |
|
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acc = (acc >> 8) & 0xff; |
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a = vs_4tap_taps[acc][0]; |
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b = vs_4tap_taps[acc][1]; |
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c = vs_4tap_taps[acc][2]; |
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d = vs_4tap_taps[acc][3]; |
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for (i = 0; i < n; i++) { |
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y = a * src1[i]; |
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y += b * src2[i]; |
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y += c * src3[i]; |
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y += d * src4[i]; |
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y += (1 << (SHIFT - 1)); |
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dest[i] = CLAMP (y >> SHIFT, 0, 255); |
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166 |
} |
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} |
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168 |
#ifdef __SYMBIAN32__ |
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169 |
EXPORT_C |
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#endif |
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171 |
|
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|
172 |
|
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|
173 |
|
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174 |
void |
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vs_image_scale_4tap_Y (const VSImage * dest, const VSImage * src, |
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176 |
uint8_t * tmpbuf) |
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177 |
{ |
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178 |
int yacc; |
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179 |
int y_increment; |
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int x_increment; |
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181 |
int i; |
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182 |
int j; |
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183 |
int xacc; |
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184 |
int k; |
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185 |
|
16 | 186 |
if (dest->height == 1) |
187 |
y_increment = 0; |
|
188 |
else |
|
189 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
190 |
||
191 |
if (dest->width == 1) |
|
192 |
x_increment = 0; |
|
193 |
else |
|
194 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
0
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195 |
|
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k = 0; |
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197 |
for (i = 0; i < 4; i++) { |
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198 |
xacc = 0; |
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199 |
vs_scanline_resample_4tap_Y (tmpbuf + i * dest->width, |
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|
200 |
src->pixels + i * src->stride, dest->width, src->width, |
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|
201 |
&xacc, x_increment); |
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202 |
} |
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|
203 |
|
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204 |
yacc = 0; |
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|
205 |
for (i = 0; i < dest->height; i++) { |
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206 |
uint8_t *t0, *t1, *t2, *t3; |
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|
207 |
|
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|
208 |
j = yacc >> 16; |
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209 |
|
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210 |
while (j > k) { |
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211 |
k++; |
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212 |
if (k + 3 < src->height) { |
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213 |
xacc = 0; |
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214 |
vs_scanline_resample_4tap_Y (tmpbuf + ((k + 3) & 3) * dest->width, |
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215 |
src->pixels + (k + 3) * src->stride, |
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216 |
dest->width, src->width, &xacc, x_increment); |
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217 |
} |
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|
218 |
} |
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diff
changeset
|
219 |
|
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diff
changeset
|
220 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->width; |
0e761a78d257
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parents:
diff
changeset
|
221 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->width; |
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parents:
diff
changeset
|
222 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->width; |
0e761a78d257
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parents:
diff
changeset
|
223 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->width; |
0e761a78d257
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
224 |
vs_scanline_merge_4tap_Y (dest->pixels + i * dest->stride, |
0e761a78d257
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
225 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
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parents:
diff
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|
226 |
|
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parents:
diff
changeset
|
227 |
yacc += y_increment; |
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parents:
diff
changeset
|
228 |
} |
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parents:
diff
changeset
|
229 |
} |
16 | 230 |
#ifdef __SYMBIAN32__ |
231 |
EXPORT_C |
|
232 |
#endif |
|
233 |
||
234 |
void |
|
235 |
vs_scanline_resample_4tap_Y16 (uint8_t * dest, uint8_t * src, |
|
236 |
int n, int src_width, int *xacc, int increment) |
|
237 |
{ |
|
238 |
int i; |
|
239 |
int j; |
|
240 |
int acc; |
|
241 |
int x; |
|
242 |
int y; |
|
243 |
uint16_t *d = (uint16_t *) dest, *s = (uint16_t *) src; |
|
244 |
||
245 |
acc = *xacc; |
|
246 |
for (i = 0; i < n; i++) { |
|
247 |
j = acc >> 16; |
|
248 |
x = (acc & 0xff00) >> 8; |
|
249 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
250 |
y = vs_4tap_taps[x][0] * s[MAX (j - 1, 0)]; |
|
251 |
y += vs_4tap_taps[x][1] * s[j]; |
|
252 |
y += vs_4tap_taps[x][2] * s[j + 1]; |
|
253 |
y += vs_4tap_taps[x][3] * s[j + 2]; |
|
254 |
} else { |
|
255 |
y = vs_4tap_taps[x][0] * s[CLAMP (j - 1, 0, src_width - 1)]; |
|
256 |
y += vs_4tap_taps[x][1] * s[CLAMP (j, 0, src_width - 1)]; |
|
257 |
y += vs_4tap_taps[x][2] * s[CLAMP (j + 1, 0, src_width - 1)]; |
|
258 |
y += vs_4tap_taps[x][3] * s[CLAMP (j + 2, 0, src_width - 1)]; |
|
259 |
} |
|
260 |
y += (1 << (SHIFT - 1)); |
|
261 |
d[i] = CLAMP (y >> SHIFT, 0, 65535); |
|
262 |
acc += increment; |
|
263 |
} |
|
264 |
*xacc = acc; |
|
265 |
} |
|
266 |
#ifdef __SYMBIAN32__ |
|
267 |
EXPORT_C |
|
268 |
#endif |
|
269 |
||
270 |
void |
|
271 |
vs_scanline_merge_4tap_Y16 (uint8_t * dest, uint8_t * src1, uint8_t * src2, |
|
272 |
uint8_t * src3, uint8_t * src4, int n, int acc) |
|
273 |
{ |
|
274 |
int i; |
|
275 |
int y; |
|
276 |
int a, b, c, d; |
|
277 |
uint16_t *de = (uint16_t *) dest, *s1 = (uint16_t *) src1; |
|
278 |
uint16_t *s2 = (uint16_t *) src2, *s3 = (uint16_t *) src3; |
|
279 |
uint16_t *s4 = (uint16_t *) src4; |
|
280 |
||
281 |
acc = (acc >> 8) & 0xff; |
|
282 |
a = vs_4tap_taps[acc][0]; |
|
283 |
b = vs_4tap_taps[acc][1]; |
|
284 |
c = vs_4tap_taps[acc][2]; |
|
285 |
d = vs_4tap_taps[acc][3]; |
|
286 |
for (i = 0; i < n; i++) { |
|
287 |
y = a * s1[i]; |
|
288 |
y += b * s2[i]; |
|
289 |
y += c * s3[i]; |
|
290 |
y += d * s4[i]; |
|
291 |
y += (1 << (SHIFT - 1)); |
|
292 |
de[i] = CLAMP (y >> SHIFT, 0, 65535); |
|
293 |
} |
|
294 |
} |
|
295 |
#ifdef __SYMBIAN32__ |
|
296 |
EXPORT_C |
|
297 |
#endif |
|
298 |
||
299 |
||
300 |
void |
|
301 |
vs_image_scale_4tap_Y16 (const VSImage * dest, const VSImage * src, |
|
302 |
uint8_t * tmpbuf) |
|
303 |
{ |
|
304 |
int yacc; |
|
305 |
int y_increment; |
|
306 |
int x_increment; |
|
307 |
int i; |
|
308 |
int j; |
|
309 |
int xacc; |
|
310 |
int k; |
|
311 |
||
312 |
if (dest->height == 1) |
|
313 |
y_increment = 0; |
|
314 |
else |
|
315 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
316 |
||
317 |
if (dest->width == 1) |
|
318 |
x_increment = 0; |
|
319 |
else |
|
320 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
321 |
||
322 |
k = 0; |
|
323 |
for (i = 0; i < 4; i++) { |
|
324 |
xacc = 0; |
|
325 |
vs_scanline_resample_4tap_Y16 (tmpbuf + i * dest->stride, |
|
326 |
src->pixels + i * src->stride, dest->width, src->width, |
|
327 |
&xacc, x_increment); |
|
328 |
} |
|
329 |
||
330 |
yacc = 0; |
|
331 |
for (i = 0; i < dest->height; i++) { |
|
332 |
uint8_t *t0, *t1, *t2, *t3; |
|
333 |
||
334 |
j = yacc >> 16; |
|
335 |
||
336 |
while (j > k) { |
|
337 |
k++; |
|
338 |
if (k + 3 < src->height) { |
|
339 |
xacc = 0; |
|
340 |
vs_scanline_resample_4tap_Y16 (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
341 |
src->pixels + (k + 3) * src->stride, |
|
342 |
dest->width, src->width, &xacc, x_increment); |
|
343 |
} |
|
344 |
} |
|
345 |
||
346 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
347 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
348 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
349 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
350 |
vs_scanline_merge_4tap_Y16 (dest->pixels + i * dest->stride, |
|
351 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
352 |
||
353 |
yacc += y_increment; |
|
354 |
} |
|
355 |
} |
|
356 |
#ifdef __SYMBIAN32__ |
|
357 |
EXPORT_C |
|
358 |
#endif |
|
359 |
||
360 |
||
361 |
void |
|
362 |
vs_scanline_resample_4tap_RGBA (uint8_t * dest, uint8_t * src, |
|
363 |
int n, int src_width, int *xacc, int increment) |
|
364 |
{ |
|
365 |
int i; |
|
366 |
int j; |
|
367 |
int acc; |
|
368 |
int x; |
|
369 |
int y; |
|
370 |
int off; |
|
371 |
||
372 |
acc = *xacc; |
|
373 |
for (i = 0; i < n; i++) { |
|
374 |
j = acc >> 16; |
|
375 |
x = (acc & 0xffff) >> 8; |
|
376 |
||
377 |
for (off = 0; off < 4; off++) { |
|
378 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
379 |
y = vs_4tap_taps[x][0] * src[MAX ((j - 1) * 4 + off, 0)]; |
|
380 |
y += vs_4tap_taps[x][1] * src[j * 4 + off]; |
|
381 |
y += vs_4tap_taps[x][2] * src[(j + 1) * 4 + off]; |
|
382 |
y += vs_4tap_taps[x][3] * src[(j + 2) * 4 + off]; |
|
383 |
} else { |
|
384 |
y = vs_4tap_taps[x][0] * src[CLAMP ((j - 1) * 4 + off, 0, |
|
385 |
4 * (src_width - 1) + off)]; |
|
386 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + off, 0, |
|
387 |
4 * (src_width - 1) + off)]; |
|
388 |
y += vs_4tap_taps[x][2] * src[CLAMP ((j + 1) * 4 + off, 0, |
|
389 |
4 * (src_width - 1) + off)]; |
|
390 |
y += vs_4tap_taps[x][3] * src[CLAMP ((j + 2) * 4 + off, 0, |
|
391 |
4 * (src_width - 1) + off)]; |
|
392 |
} |
|
393 |
y += (1 << (SHIFT - 1)); |
|
394 |
dest[i * 4 + off] = CLAMP (y >> SHIFT, 0, 255); |
|
395 |
} |
|
396 |
acc += increment; |
|
397 |
} |
|
398 |
*xacc = acc; |
|
399 |
} |
|
400 |
#ifdef __SYMBIAN32__ |
|
401 |
EXPORT_C |
|
402 |
#endif |
|
403 |
||
404 |
||
405 |
void |
|
406 |
vs_scanline_merge_4tap_RGBA (uint8_t * dest, uint8_t * src1, uint8_t * src2, |
|
407 |
uint8_t * src3, uint8_t * src4, int n, int acc) |
|
408 |
{ |
|
409 |
int i; |
|
410 |
int y; |
|
411 |
int off; |
|
412 |
int a, b, c, d; |
|
413 |
||
414 |
acc = (acc >> 8) & 0xff; |
|
415 |
a = vs_4tap_taps[acc][0]; |
|
416 |
b = vs_4tap_taps[acc][1]; |
|
417 |
c = vs_4tap_taps[acc][2]; |
|
418 |
d = vs_4tap_taps[acc][3]; |
|
419 |
for (i = 0; i < n; i++) { |
|
420 |
for (off = 0; off < 4; off++) { |
|
421 |
y = a * src1[i * 4 + off]; |
|
422 |
y += b * src2[i * 4 + off]; |
|
423 |
y += c * src3[i * 4 + off]; |
|
424 |
y += d * src4[i * 4 + off]; |
|
425 |
y += (1 << (SHIFT - 1)); |
|
426 |
dest[i * 4 + off] = CLAMP (y >> SHIFT, 0, 255); |
|
427 |
} |
|
428 |
} |
|
429 |
} |
|
430 |
#ifdef __SYMBIAN32__ |
|
431 |
EXPORT_C |
|
432 |
#endif |
|
433 |
||
434 |
||
435 |
void |
|
436 |
vs_image_scale_4tap_RGBA (const VSImage * dest, const VSImage * src, |
|
437 |
uint8_t * tmpbuf) |
|
438 |
{ |
|
439 |
int yacc; |
|
440 |
int y_increment; |
|
441 |
int x_increment; |
|
442 |
int i; |
|
443 |
int j; |
|
444 |
int xacc; |
|
445 |
int k; |
|
446 |
||
447 |
if (dest->height == 1) |
|
448 |
y_increment = 0; |
|
449 |
else |
|
450 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
451 |
||
452 |
if (dest->width == 1) |
|
453 |
x_increment = 0; |
|
454 |
else |
|
455 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
456 |
||
457 |
k = 0; |
|
458 |
for (i = 0; i < 4; i++) { |
|
459 |
xacc = 0; |
|
460 |
vs_scanline_resample_4tap_RGBA (tmpbuf + i * dest->stride, |
|
461 |
src->pixels + i * src->stride, dest->width, src->width, |
|
462 |
&xacc, x_increment); |
|
463 |
} |
|
464 |
||
465 |
yacc = 0; |
|
466 |
for (i = 0; i < dest->height; i++) { |
|
467 |
uint8_t *t0, *t1, *t2, *t3; |
|
468 |
||
469 |
j = yacc >> 16; |
|
470 |
||
471 |
while (j > k) { |
|
472 |
k++; |
|
473 |
if (k + 3 < src->height) { |
|
474 |
xacc = 0; |
|
475 |
vs_scanline_resample_4tap_RGBA (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
476 |
src->pixels + (k + 3) * src->stride, |
|
477 |
dest->width, src->width, &xacc, x_increment); |
|
478 |
} |
|
479 |
} |
|
480 |
||
481 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
482 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
483 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
484 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
485 |
vs_scanline_merge_4tap_RGBA (dest->pixels + i * dest->stride, |
|
486 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
487 |
||
488 |
yacc += y_increment; |
|
489 |
} |
|
490 |
} |
|
491 |
#ifdef __SYMBIAN32__ |
|
492 |
EXPORT_C |
|
493 |
#endif |
|
494 |
||
495 |
||
496 |
void |
|
497 |
vs_scanline_resample_4tap_RGB (uint8_t * dest, uint8_t * src, |
|
498 |
int n, int src_width, int *xacc, int increment) |
|
499 |
{ |
|
500 |
int i; |
|
501 |
int j; |
|
502 |
int acc; |
|
503 |
int x; |
|
504 |
int y; |
|
505 |
int off; |
|
506 |
||
507 |
acc = *xacc; |
|
508 |
for (i = 0; i < n; i++) { |
|
509 |
j = acc >> 16; |
|
510 |
x = (acc & 0xffff) >> 8; |
|
511 |
||
512 |
for (off = 0; off < 3; off++) { |
|
513 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
514 |
y = vs_4tap_taps[x][0] * src[MAX ((j - 1) * 3 + off, 0)]; |
|
515 |
y += vs_4tap_taps[x][1] * src[j * 3 + off]; |
|
516 |
y += vs_4tap_taps[x][2] * src[(j + 1) * 3 + off]; |
|
517 |
y += vs_4tap_taps[x][3] * src[(j + 2) * 3 + off]; |
|
518 |
} else { |
|
519 |
y = vs_4tap_taps[x][0] * src[CLAMP ((j - 1) * 3 + off, 0, |
|
520 |
3 * (src_width - 1) + off)]; |
|
521 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 3 + off, 0, |
|
522 |
3 * (src_width - 1) + off)]; |
|
523 |
y += vs_4tap_taps[x][2] * src[CLAMP ((j + 1) * 3 + off, 0, |
|
524 |
3 * (src_width - 1) + off)]; |
|
525 |
y += vs_4tap_taps[x][3] * src[CLAMP ((j + 2) * 3 + off, 0, |
|
526 |
3 * (src_width - 1) + off)]; |
|
527 |
} |
|
528 |
y += (1 << (SHIFT - 1)); |
|
529 |
dest[i * 3 + off] = CLAMP (y >> SHIFT, 0, 255); |
|
530 |
} |
|
531 |
acc += increment; |
|
532 |
} |
|
533 |
*xacc = acc; |
|
534 |
} |
|
535 |
#ifdef __SYMBIAN32__ |
|
536 |
EXPORT_C |
|
537 |
#endif |
|
538 |
||
539 |
||
540 |
void |
|
541 |
vs_scanline_merge_4tap_RGB (uint8_t * dest, uint8_t * src1, uint8_t * src2, |
|
542 |
uint8_t * src3, uint8_t * src4, int n, int acc) |
|
543 |
{ |
|
544 |
int i; |
|
545 |
int y; |
|
546 |
int off; |
|
547 |
int a, b, c, d; |
|
548 |
||
549 |
acc = (acc >> 8) & 0xff; |
|
550 |
a = vs_4tap_taps[acc][0]; |
|
551 |
b = vs_4tap_taps[acc][1]; |
|
552 |
c = vs_4tap_taps[acc][2]; |
|
553 |
d = vs_4tap_taps[acc][3]; |
|
554 |
for (i = 0; i < n; i++) { |
|
555 |
for (off = 0; off < 3; off++) { |
|
556 |
y = a * src1[i * 3 + off]; |
|
557 |
y += b * src2[i * 3 + off]; |
|
558 |
y += c * src3[i * 3 + off]; |
|
559 |
y += d * src4[i * 3 + off]; |
|
560 |
y += (1 << (SHIFT - 1)); |
|
561 |
dest[i * 3 + off] = CLAMP (y >> SHIFT, 0, 255); |
|
562 |
} |
|
563 |
} |
|
564 |
} |
|
565 |
#ifdef __SYMBIAN32__ |
|
566 |
EXPORT_C |
|
567 |
#endif |
|
568 |
||
569 |
||
570 |
void |
|
571 |
vs_image_scale_4tap_RGB (const VSImage * dest, const VSImage * src, |
|
572 |
uint8_t * tmpbuf) |
|
573 |
{ |
|
574 |
int yacc; |
|
575 |
int y_increment; |
|
576 |
int x_increment; |
|
577 |
int i; |
|
578 |
int j; |
|
579 |
int xacc; |
|
580 |
int k; |
|
581 |
||
582 |
if (dest->height == 1) |
|
583 |
y_increment = 0; |
|
584 |
else |
|
585 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
586 |
||
587 |
if (dest->width == 1) |
|
588 |
x_increment = 0; |
|
589 |
else |
|
590 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
591 |
||
592 |
k = 0; |
|
593 |
for (i = 0; i < 4; i++) { |
|
594 |
xacc = 0; |
|
595 |
vs_scanline_resample_4tap_RGB (tmpbuf + i * dest->stride, |
|
596 |
src->pixels + i * src->stride, dest->width, src->width, |
|
597 |
&xacc, x_increment); |
|
598 |
} |
|
599 |
||
600 |
yacc = 0; |
|
601 |
for (i = 0; i < dest->height; i++) { |
|
602 |
uint8_t *t0, *t1, *t2, *t3; |
|
603 |
||
604 |
j = yacc >> 16; |
|
605 |
||
606 |
while (j > k) { |
|
607 |
k++; |
|
608 |
if (k + 3 < src->height) { |
|
609 |
xacc = 0; |
|
610 |
vs_scanline_resample_4tap_RGB (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
611 |
src->pixels + (k + 3) * src->stride, |
|
612 |
dest->width, src->width, &xacc, x_increment); |
|
613 |
} |
|
614 |
} |
|
615 |
||
616 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
617 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
618 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
619 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
620 |
vs_scanline_merge_4tap_RGB (dest->pixels + i * dest->stride, |
|
621 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
622 |
||
623 |
yacc += y_increment; |
|
624 |
} |
|
625 |
} |
|
626 |
#ifdef __SYMBIAN32__ |
|
627 |
EXPORT_C |
|
628 |
#endif |
|
629 |
||
630 |
||
631 |
void |
|
632 |
vs_scanline_resample_4tap_YUYV (uint8_t * dest, uint8_t * src, |
|
633 |
int n, int src_width, int *xacc, int increment) |
|
634 |
{ |
|
635 |
int i; |
|
636 |
int j; |
|
637 |
int acc; |
|
638 |
int x; |
|
639 |
int y; |
|
640 |
int quads = (n + 1) / 2; |
|
641 |
int last_y = 2 * (src_width - 1); |
|
642 |
int last_u = |
|
643 |
MAX ((2 * (src_width - 1) % 4 == |
|
644 |
0) ? 2 * (src_width - 1) + 1 : 2 * (src_width - 1) - 1, 1); |
|
645 |
int last_v = |
|
646 |
MAX ((2 * (src_width - 1) % 4 == |
|
647 |
2) ? 2 * (src_width - 1) + 1 : 2 * (src_width - 1) - 1, 1); |
|
648 |
||
649 |
acc = *xacc; |
|
650 |
for (i = 0; i < quads; i++) { |
|
651 |
j = acc >> 16; |
|
652 |
x = (acc & 0xffff) >> 8; |
|
653 |
||
654 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
655 |
y = vs_4tap_taps[x][0] * src[MAX (j * 2 + 0 - 2, 0)]; |
|
656 |
y += vs_4tap_taps[x][1] * src[j * 2 + 0]; |
|
657 |
y += vs_4tap_taps[x][2] * src[j * 2 + 0 + 2]; |
|
658 |
y += vs_4tap_taps[x][3] * src[j * 2 + 0 + 4]; |
|
659 |
} else { |
|
660 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 0 - 2, 0, last_y)]; |
|
661 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 0, 0, last_y)]; |
|
662 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 0 + 2, 0, last_y)]; |
|
663 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 0 + 4, 0, last_y)]; |
|
664 |
} |
|
665 |
y += (1 << (SHIFT - 1)); |
|
666 |
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255); |
|
667 |
||
668 |
j = acc >> 17; |
|
669 |
x = (acc & 0x1ffff) >> 9; |
|
670 |
||
671 |
if (2 * (j - 1) >= 0 && 2 * (j + 4) < src_width) { |
|
672 |
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 1 - 4, 1)]; |
|
673 |
y += vs_4tap_taps[x][1] * src[j * 4 + 1]; |
|
674 |
y += vs_4tap_taps[x][2] * src[j * 4 + 1 + 4]; |
|
675 |
y += vs_4tap_taps[x][3] * src[j * 4 + 1 + 8]; |
|
676 |
} else { |
|
677 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 1 - 4, 1, last_u)]; |
|
678 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 1, 1, last_u)]; |
|
679 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 1 + 4, 1, last_u)]; |
|
680 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 1 + 8, 1, last_u)]; |
|
681 |
} |
|
682 |
y += (1 << (SHIFT - 1)); |
|
683 |
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255); |
|
684 |
||
685 |
if (2 * i + 1 < n) { |
|
686 |
if (2 * (j - 1) >= 0 && 2 * (j + 4) < src_width) { |
|
687 |
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 3 - 4, 3)]; |
|
688 |
y += vs_4tap_taps[x][1] * src[j * 4 + 3]; |
|
689 |
y += vs_4tap_taps[x][2] * src[j * 4 + 3 + 4]; |
|
690 |
y += vs_4tap_taps[x][3] * src[j * 4 + 3 + 8]; |
|
691 |
} else { |
|
692 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 3 - 4, 3, last_v)]; |
|
693 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 3, 3, last_v)]; |
|
694 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 3 + 4, 3, last_v)]; |
|
695 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 3 + 8, 3, last_v)]; |
|
696 |
} |
|
697 |
y += (1 << (SHIFT - 1)); |
|
698 |
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255); |
|
699 |
} |
|
700 |
||
701 |
acc += increment; |
|
702 |
j = acc >> 16; |
|
703 |
x = (acc & 0xffff) >> 8; |
|
704 |
||
705 |
if (2 * i + 1 < n) { |
|
706 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
707 |
y = vs_4tap_taps[x][0] * src[MAX (j * 2 + 0 - 2, 0)]; |
|
708 |
y += vs_4tap_taps[x][1] * src[j * 2 + 0]; |
|
709 |
y += vs_4tap_taps[x][2] * src[j * 2 + 0 + 2]; |
|
710 |
y += vs_4tap_taps[x][3] * src[j * 2 + 0 + 4]; |
|
711 |
} else { |
|
712 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 0 - 2, 0, last_y)]; |
|
713 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 0, 0, last_y)]; |
|
714 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 0 + 2, 0, last_y)]; |
|
715 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 0 + 4, 0, last_y)]; |
|
716 |
} |
|
717 |
y += (1 << (SHIFT - 1)); |
|
718 |
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255); |
|
719 |
acc += increment; |
|
720 |
} |
|
721 |
} |
|
722 |
*xacc = acc; |
|
723 |
} |
|
724 |
#ifdef __SYMBIAN32__ |
|
725 |
EXPORT_C |
|
726 |
#endif |
|
727 |
||
728 |
||
729 |
void |
|
730 |
vs_scanline_merge_4tap_YUYV (uint8_t * dest, uint8_t * src1, uint8_t * src2, |
|
731 |
uint8_t * src3, uint8_t * src4, int n, int acc) |
|
732 |
{ |
|
733 |
int i; |
|
734 |
int y; |
|
735 |
int a, b, c, d; |
|
736 |
int quads = (n + 1) / 2; |
|
737 |
||
738 |
acc = (acc >> 8) & 0xff; |
|
739 |
a = vs_4tap_taps[acc][0]; |
|
740 |
b = vs_4tap_taps[acc][1]; |
|
741 |
c = vs_4tap_taps[acc][2]; |
|
742 |
d = vs_4tap_taps[acc][3]; |
|
743 |
for (i = 0; i < quads; i++) { |
|
744 |
y = a * src1[i * 4 + 0]; |
|
745 |
y += b * src2[i * 4 + 0]; |
|
746 |
y += c * src3[i * 4 + 0]; |
|
747 |
y += d * src4[i * 4 + 0]; |
|
748 |
y += (1 << (SHIFT - 1)); |
|
749 |
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255); |
|
750 |
||
751 |
y = a * src1[i * 4 + 1]; |
|
752 |
y += b * src2[i * 4 + 1]; |
|
753 |
y += c * src3[i * 4 + 1]; |
|
754 |
y += d * src4[i * 4 + 1]; |
|
755 |
y += (1 << (SHIFT - 1)); |
|
756 |
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255); |
|
757 |
||
758 |
if (2 * i + 1 < n) { |
|
759 |
y = a * src1[i * 4 + 2]; |
|
760 |
y += b * src2[i * 4 + 2]; |
|
761 |
y += c * src3[i * 4 + 2]; |
|
762 |
y += d * src4[i * 4 + 2]; |
|
763 |
y += (1 << (SHIFT - 1)); |
|
764 |
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255); |
|
765 |
||
766 |
y = a * src1[i * 4 + 3]; |
|
767 |
y += b * src2[i * 4 + 3]; |
|
768 |
y += c * src3[i * 4 + 3]; |
|
769 |
y += d * src4[i * 4 + 3]; |
|
770 |
y += (1 << (SHIFT - 1)); |
|
771 |
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255); |
|
772 |
} |
|
773 |
} |
|
774 |
} |
|
775 |
#ifdef __SYMBIAN32__ |
|
776 |
EXPORT_C |
|
777 |
#endif |
|
778 |
||
779 |
||
780 |
void |
|
781 |
vs_image_scale_4tap_YUYV (const VSImage * dest, const VSImage * src, |
|
782 |
uint8_t * tmpbuf) |
|
783 |
{ |
|
784 |
int yacc; |
|
785 |
int y_increment; |
|
786 |
int x_increment; |
|
787 |
int i; |
|
788 |
int j; |
|
789 |
int xacc; |
|
790 |
int k; |
|
791 |
||
792 |
if (dest->height == 1) |
|
793 |
y_increment = 0; |
|
794 |
else |
|
795 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
796 |
||
797 |
if (dest->width == 1) |
|
798 |
x_increment = 0; |
|
799 |
else |
|
800 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
801 |
||
802 |
k = 0; |
|
803 |
for (i = 0; i < 4; i++) { |
|
804 |
xacc = 0; |
|
805 |
vs_scanline_resample_4tap_YUYV (tmpbuf + i * dest->stride, |
|
806 |
src->pixels + i * src->stride, dest->width, src->width, |
|
807 |
&xacc, x_increment); |
|
808 |
} |
|
809 |
||
810 |
yacc = 0; |
|
811 |
for (i = 0; i < dest->height; i++) { |
|
812 |
uint8_t *t0, *t1, *t2, *t3; |
|
813 |
||
814 |
j = yacc >> 16; |
|
815 |
||
816 |
while (j > k) { |
|
817 |
k++; |
|
818 |
if (k + 3 < src->height) { |
|
819 |
xacc = 0; |
|
820 |
vs_scanline_resample_4tap_YUYV (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
821 |
src->pixels + (k + 3) * src->stride, |
|
822 |
dest->width, src->width, &xacc, x_increment); |
|
823 |
} |
|
824 |
} |
|
825 |
||
826 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
827 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
828 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
829 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
830 |
vs_scanline_merge_4tap_YUYV (dest->pixels + i * dest->stride, |
|
831 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
832 |
||
833 |
yacc += y_increment; |
|
834 |
} |
|
835 |
} |
|
836 |
#ifdef __SYMBIAN32__ |
|
837 |
EXPORT_C |
|
838 |
#endif |
|
839 |
||
840 |
||
841 |
void |
|
842 |
vs_scanline_resample_4tap_UYVY (uint8_t * dest, uint8_t * src, |
|
843 |
int n, int src_width, int *xacc, int increment) |
|
844 |
{ |
|
845 |
int i; |
|
846 |
int j; |
|
847 |
int acc; |
|
848 |
int x; |
|
849 |
int y; |
|
850 |
int quads = (n + 1) / 2; |
|
851 |
int last_y = 2 * (src_width - 1) + 1; |
|
852 |
int last_u = |
|
853 |
MAX ((2 * (src_width - 1) % 4 == |
|
854 |
0) ? 2 * (src_width - 1) : 2 * (src_width - 1) - 2, 0); |
|
855 |
int last_v = |
|
856 |
MAX ((2 * (src_width - 1) % 4 == |
|
857 |
2) ? 2 * (src_width - 1) : 2 * (src_width - 1) - 2, 0); |
|
858 |
||
859 |
acc = *xacc; |
|
860 |
for (i = 0; i < quads; i++) { |
|
861 |
j = acc >> 16; |
|
862 |
x = (acc & 0xffff) >> 8; |
|
863 |
||
864 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
865 |
y = vs_4tap_taps[x][0] * src[MAX (j * 2 + 1 - 2, 1)]; |
|
866 |
y += vs_4tap_taps[x][1] * src[j * 2 + 1]; |
|
867 |
y += vs_4tap_taps[x][2] * src[j * 2 + 1 + 2]; |
|
868 |
y += vs_4tap_taps[x][3] * src[j * 2 + 1 + 4]; |
|
869 |
} else { |
|
870 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 1 - 2, 1, last_y)]; |
|
871 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 1, 1, last_y)]; |
|
872 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 1 + 2, 1, last_y)]; |
|
873 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 1 + 4, 1, last_y)]; |
|
874 |
} |
|
875 |
y += (1 << (SHIFT - 1)); |
|
876 |
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255); |
|
877 |
||
878 |
j = acc >> 17; |
|
879 |
x = (acc & 0x1ffff) >> 9; |
|
880 |
||
881 |
if (2 * (j - 2) >= 0 && 2 * (j + 4) < src_width) { |
|
882 |
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 0 - 4, 0)]; |
|
883 |
y += vs_4tap_taps[x][1] * src[j * 4 + 0]; |
|
884 |
y += vs_4tap_taps[x][2] * src[j * 4 + 0 + 4]; |
|
885 |
y += vs_4tap_taps[x][3] * src[j * 4 + 0 + 8]; |
|
886 |
} else { |
|
887 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 0 - 4, 0, last_u)]; |
|
888 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 0, 0, last_u)]; |
|
889 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 0 + 4, 0, last_u)]; |
|
890 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 0 + 8, 0, last_u)]; |
|
891 |
} |
|
892 |
y += (1 << (SHIFT - 1)); |
|
893 |
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255); |
|
894 |
||
895 |
if (2 * i + 1 < n) { |
|
896 |
if (2 * (j - 1) >= 0 && 2 * (j + 4) < src_width) { |
|
897 |
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 2 - 4, 2)]; |
|
898 |
y += vs_4tap_taps[x][1] * src[j * 4 + 2]; |
|
899 |
y += vs_4tap_taps[x][2] * src[j * 4 + 2 + 4]; |
|
900 |
y += vs_4tap_taps[x][3] * src[j * 4 + 2 + 8]; |
|
901 |
} else { |
|
902 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 2 - 4, 2, last_v)]; |
|
903 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 2, 2, last_v)]; |
|
904 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 2 + 4, 2, last_v)]; |
|
905 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 2 + 8, 2, last_v)]; |
|
906 |
} |
|
907 |
y += (1 << (SHIFT - 1)); |
|
908 |
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255); |
|
909 |
} |
|
910 |
||
911 |
acc += increment; |
|
912 |
j = acc >> 16; |
|
913 |
x = (acc & 0xffff) >> 8; |
|
914 |
||
915 |
if (2 * i + 1 < n) { |
|
916 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
917 |
y = vs_4tap_taps[x][0] * src[MAX (j * 2 + 1 - 2, 0)]; |
|
918 |
y += vs_4tap_taps[x][1] * src[j * 2 + 1]; |
|
919 |
y += vs_4tap_taps[x][2] * src[j * 2 + 1 + 2]; |
|
920 |
y += vs_4tap_taps[x][3] * src[j * 2 + 1 + 4]; |
|
921 |
} else { |
|
922 |
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 1 - 2, 1, last_y)]; |
|
923 |
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 1, 1, last_y)]; |
|
924 |
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 1 + 2, 1, last_y)]; |
|
925 |
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 1 + 4, 1, last_y)]; |
|
926 |
} |
|
927 |
y += (1 << (SHIFT - 1)); |
|
928 |
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255); |
|
929 |
acc += increment; |
|
930 |
} |
|
931 |
} |
|
932 |
*xacc = acc; |
|
933 |
} |
|
934 |
#ifdef __SYMBIAN32__ |
|
935 |
EXPORT_C |
|
936 |
#endif |
|
937 |
||
938 |
||
939 |
void |
|
940 |
vs_scanline_merge_4tap_UYVY (uint8_t * dest, uint8_t * src1, uint8_t * src2, |
|
941 |
uint8_t * src3, uint8_t * src4, int n, int acc) |
|
942 |
{ |
|
943 |
int i; |
|
944 |
int y; |
|
945 |
int a, b, c, d; |
|
946 |
int quads = (n + 1) / 2; |
|
947 |
||
948 |
acc = (acc >> 8) & 0xff; |
|
949 |
a = vs_4tap_taps[acc][0]; |
|
950 |
b = vs_4tap_taps[acc][1]; |
|
951 |
c = vs_4tap_taps[acc][2]; |
|
952 |
d = vs_4tap_taps[acc][3]; |
|
953 |
for (i = 0; i < quads; i++) { |
|
954 |
y = a * src1[i * 4 + 0]; |
|
955 |
y += b * src2[i * 4 + 0]; |
|
956 |
y += c * src3[i * 4 + 0]; |
|
957 |
y += d * src4[i * 4 + 0]; |
|
958 |
y += (1 << (SHIFT - 1)); |
|
959 |
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255); |
|
960 |
||
961 |
y = a * src1[i * 4 + 1]; |
|
962 |
y += b * src2[i * 4 + 1]; |
|
963 |
y += c * src3[i * 4 + 1]; |
|
964 |
y += d * src4[i * 4 + 1]; |
|
965 |
y += (1 << (SHIFT - 1)); |
|
966 |
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255); |
|
967 |
||
968 |
if (2 * i + 1 < n) { |
|
969 |
y = a * src1[i * 4 + 2]; |
|
970 |
y += b * src2[i * 4 + 2]; |
|
971 |
y += c * src3[i * 4 + 2]; |
|
972 |
y += d * src4[i * 4 + 2]; |
|
973 |
y += (1 << (SHIFT - 1)); |
|
974 |
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255); |
|
975 |
||
976 |
y = a * src1[i * 4 + 3]; |
|
977 |
y += b * src2[i * 4 + 3]; |
|
978 |
y += c * src3[i * 4 + 3]; |
|
979 |
y += d * src4[i * 4 + 3]; |
|
980 |
y += (1 << (SHIFT - 1)); |
|
981 |
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255); |
|
982 |
} |
|
983 |
} |
|
984 |
} |
|
985 |
#ifdef __SYMBIAN32__ |
|
986 |
EXPORT_C |
|
987 |
#endif |
|
988 |
||
989 |
||
990 |
void |
|
991 |
vs_image_scale_4tap_UYVY (const VSImage * dest, const VSImage * src, |
|
992 |
uint8_t * tmpbuf) |
|
993 |
{ |
|
994 |
int yacc; |
|
995 |
int y_increment; |
|
996 |
int x_increment; |
|
997 |
int i; |
|
998 |
int j; |
|
999 |
int xacc; |
|
1000 |
int k; |
|
1001 |
||
1002 |
if (dest->height == 1) |
|
1003 |
y_increment = 0; |
|
1004 |
else |
|
1005 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
1006 |
||
1007 |
if (dest->width == 1) |
|
1008 |
x_increment = 0; |
|
1009 |
else |
|
1010 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
1011 |
||
1012 |
k = 0; |
|
1013 |
for (i = 0; i < 4; i++) { |
|
1014 |
xacc = 0; |
|
1015 |
vs_scanline_resample_4tap_UYVY (tmpbuf + i * dest->stride, |
|
1016 |
src->pixels + i * src->stride, dest->width, src->width, |
|
1017 |
&xacc, x_increment); |
|
1018 |
} |
|
1019 |
||
1020 |
yacc = 0; |
|
1021 |
for (i = 0; i < dest->height; i++) { |
|
1022 |
uint8_t *t0, *t1, *t2, *t3; |
|
1023 |
||
1024 |
j = yacc >> 16; |
|
1025 |
||
1026 |
while (j > k) { |
|
1027 |
k++; |
|
1028 |
if (k + 3 < src->height) { |
|
1029 |
xacc = 0; |
|
1030 |
vs_scanline_resample_4tap_UYVY (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
1031 |
src->pixels + (k + 3) * src->stride, |
|
1032 |
dest->width, src->width, &xacc, x_increment); |
|
1033 |
} |
|
1034 |
} |
|
1035 |
||
1036 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
1037 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
1038 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
1039 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
1040 |
vs_scanline_merge_4tap_UYVY (dest->pixels + i * dest->stride, |
|
1041 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
1042 |
||
1043 |
yacc += y_increment; |
|
1044 |
} |
|
1045 |
} |
|
1046 |
||
1047 |
/* note that src and dest are uint16_t, and thus endian dependent */ |
|
1048 |
||
1049 |
#define RGB565_R(x) (((x)&0xf800)>>8 | ((x)&0xf800)>>13) |
|
1050 |
#define RGB565_G(x) (((x)&0x07e0)>>3 | ((x)&0x07e0)>>9) |
|
1051 |
#define RGB565_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2) |
|
1052 |
||
1053 |
#define RGB565(r,g,b) \ |
|
1054 |
((((r)<<8)&0xf800) | (((g)<<3)&0x07e0) | (((b)>>3)&0x001f)) |
|
1055 |
||
1056 |
#ifdef __SYMBIAN32__ |
|
1057 |
EXPORT_C |
|
1058 |
#endif |
|
1059 |
||
1060 |
void |
|
1061 |
vs_scanline_resample_4tap_RGB565 (uint8_t * dest_u8, uint8_t * src_u8, |
|
1062 |
int n, int src_width, int *xacc, int increment) |
|
1063 |
{ |
|
1064 |
int i; |
|
1065 |
int j; |
|
1066 |
int acc; |
|
1067 |
int x; |
|
1068 |
int y, y_r, y_b, y_g; |
|
1069 |
uint16_t *dest = (uint16_t *) dest_u8; |
|
1070 |
uint16_t *src = (uint16_t *) src_u8; |
|
1071 |
||
1072 |
acc = *xacc; |
|
1073 |
for (i = 0; i < n; i++) { |
|
1074 |
j = acc >> 16; |
|
1075 |
x = acc & 0xffff >> 8; |
|
1076 |
||
1077 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
1078 |
y = vs_4tap_taps[x][0] * RGB565_R (src[MAX ((j - 1), 0)]); |
|
1079 |
y += vs_4tap_taps[x][1] * RGB565_R (src[j]); |
|
1080 |
y += vs_4tap_taps[x][2] * RGB565_R (src[(j + 1)]); |
|
1081 |
y += vs_4tap_taps[x][3] * RGB565_R (src[(j + 2)]); |
|
1082 |
} else { |
|
1083 |
y = vs_4tap_taps[x][0] * RGB565_R (src[CLAMP ((j - 1), 0, |
|
1084 |
src_width - 1)]); |
|
1085 |
y += vs_4tap_taps[x][1] * RGB565_R (src[CLAMP (j, 0, src_width - 1)]); |
|
1086 |
y += vs_4tap_taps[x][2] * RGB565_R (src[CLAMP ((j + 1), 0, |
|
1087 |
src_width - 1)]); |
|
1088 |
y += vs_4tap_taps[x][3] * RGB565_R (src[CLAMP ((j + 2), 0, |
|
1089 |
src_width - 1)]); |
|
1090 |
} |
|
1091 |
y += (1 << (SHIFT - 1)); |
|
1092 |
y_r = CLAMP (y >> SHIFT, 0, 255); |
|
1093 |
||
1094 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
1095 |
y = vs_4tap_taps[x][0] * RGB565_G (src[MAX ((j - 1), 0)]); |
|
1096 |
y += vs_4tap_taps[x][1] * RGB565_G (src[j]); |
|
1097 |
y += vs_4tap_taps[x][2] * RGB565_G (src[(j + 1)]); |
|
1098 |
y += vs_4tap_taps[x][3] * RGB565_G (src[(j + 2)]); |
|
1099 |
} else { |
|
1100 |
y = vs_4tap_taps[x][0] * RGB565_G (src[CLAMP ((j - 1), 0, |
|
1101 |
src_width - 1)]); |
|
1102 |
y += vs_4tap_taps[x][1] * RGB565_G (src[CLAMP (j, 0, src_width - 1)]); |
|
1103 |
y += vs_4tap_taps[x][2] * RGB565_G (src[CLAMP ((j + 1), 0, |
|
1104 |
src_width - 1)]); |
|
1105 |
y += vs_4tap_taps[x][3] * RGB565_G (src[CLAMP ((j + 2), 0, |
|
1106 |
src_width - 1)]); |
|
1107 |
} |
|
1108 |
y += (1 << (SHIFT - 1)); |
|
1109 |
y_g = CLAMP (y >> SHIFT, 0, 255); |
|
1110 |
||
1111 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
1112 |
y = vs_4tap_taps[x][0] * RGB565_B (src[MAX ((j - 1), 0)]); |
|
1113 |
y += vs_4tap_taps[x][1] * RGB565_B (src[j]); |
|
1114 |
y += vs_4tap_taps[x][2] * RGB565_B (src[(j + 1)]); |
|
1115 |
y += vs_4tap_taps[x][3] * RGB565_B (src[(j + 2)]); |
|
1116 |
} else { |
|
1117 |
y = vs_4tap_taps[x][0] * RGB565_B (src[CLAMP ((j - 1), 0, |
|
1118 |
src_width - 1)]); |
|
1119 |
y += vs_4tap_taps[x][1] * RGB565_B (src[CLAMP (j, 0, src_width - 1)]); |
|
1120 |
y += vs_4tap_taps[x][2] * RGB565_B (src[CLAMP ((j + 1), 0, |
|
1121 |
src_width - 1)]); |
|
1122 |
y += vs_4tap_taps[x][3] * RGB565_B (src[CLAMP ((j + 2), 0, |
|
1123 |
src_width - 1)]); |
|
1124 |
} |
|
1125 |
y += (1 << (SHIFT - 1)); |
|
1126 |
y_b = CLAMP (y >> SHIFT, 0, 255); |
|
1127 |
||
1128 |
dest[i] = RGB565 (y_r, y_b, y_g); |
|
1129 |
acc += increment; |
|
1130 |
} |
|
1131 |
*xacc = acc; |
|
1132 |
} |
|
1133 |
#ifdef __SYMBIAN32__ |
|
1134 |
EXPORT_C |
|
1135 |
#endif |
|
1136 |
||
1137 |
||
1138 |
void |
|
1139 |
vs_scanline_merge_4tap_RGB565 (uint8_t * dest_u8, uint8_t * src1_u8, |
|
1140 |
uint8_t * src2_u8, uint8_t * src3_u8, uint8_t * src4_u8, int n, int acc) |
|
1141 |
{ |
|
1142 |
int i; |
|
1143 |
int y, y_r, y_b, y_g; |
|
1144 |
int a, b, c, d; |
|
1145 |
uint16_t *dest = (uint16_t *) dest_u8; |
|
1146 |
uint16_t *src1 = (uint16_t *) src1_u8; |
|
1147 |
uint16_t *src2 = (uint16_t *) src2_u8; |
|
1148 |
uint16_t *src3 = (uint16_t *) src3_u8; |
|
1149 |
uint16_t *src4 = (uint16_t *) src4_u8; |
|
1150 |
||
1151 |
acc = (acc >> 8) & 0xff; |
|
1152 |
a = vs_4tap_taps[acc][0]; |
|
1153 |
b = vs_4tap_taps[acc][1]; |
|
1154 |
c = vs_4tap_taps[acc][2]; |
|
1155 |
d = vs_4tap_taps[acc][3]; |
|
1156 |
||
1157 |
for (i = 0; i < n; i++) { |
|
1158 |
y = a * RGB565_R (src1[i]); |
|
1159 |
y += b * RGB565_R (src2[i]); |
|
1160 |
y += c * RGB565_R (src3[i]); |
|
1161 |
y += d * RGB565_R (src4[i]); |
|
1162 |
y += (1 << (SHIFT - 1)); |
|
1163 |
y_r = CLAMP (y >> SHIFT, 0, 255); |
|
1164 |
||
1165 |
y = a * RGB565_G (src1[i]); |
|
1166 |
y += b * RGB565_G (src2[i]); |
|
1167 |
y += c * RGB565_G (src3[i]); |
|
1168 |
y += d * RGB565_G (src4[i]); |
|
1169 |
y += (1 << (SHIFT - 1)); |
|
1170 |
y_g = CLAMP (y >> SHIFT, 0, 255); |
|
1171 |
||
1172 |
y = a * RGB565_B (src1[i]); |
|
1173 |
y += b * RGB565_B (src2[i]); |
|
1174 |
y += c * RGB565_B (src3[i]); |
|
1175 |
y += d * RGB565_B (src4[i]); |
|
1176 |
y += (1 << (SHIFT - 1)); |
|
1177 |
y_b = CLAMP (y >> SHIFT, 0, 255); |
|
1178 |
||
1179 |
dest[i] = RGB565 (y_r, y_b, y_g); |
|
1180 |
} |
|
1181 |
} |
|
1182 |
#ifdef __SYMBIAN32__ |
|
1183 |
EXPORT_C |
|
1184 |
#endif |
|
1185 |
||
1186 |
||
1187 |
void |
|
1188 |
vs_image_scale_4tap_RGB565 (const VSImage * dest, const VSImage * src, |
|
1189 |
uint8_t * tmpbuf) |
|
1190 |
{ |
|
1191 |
int yacc; |
|
1192 |
int y_increment; |
|
1193 |
int x_increment; |
|
1194 |
int i; |
|
1195 |
int j; |
|
1196 |
int xacc; |
|
1197 |
int k; |
|
1198 |
||
1199 |
if (dest->height == 1) |
|
1200 |
y_increment = 0; |
|
1201 |
else |
|
1202 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
1203 |
||
1204 |
if (dest->width == 1) |
|
1205 |
x_increment = 0; |
|
1206 |
else |
|
1207 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
1208 |
||
1209 |
k = 0; |
|
1210 |
for (i = 0; i < 4; i++) { |
|
1211 |
xacc = 0; |
|
1212 |
vs_scanline_resample_4tap_RGB565 (tmpbuf + i * dest->stride, |
|
1213 |
src->pixels + i * src->stride, dest->width, src->width, |
|
1214 |
&xacc, x_increment); |
|
1215 |
} |
|
1216 |
||
1217 |
yacc = 0; |
|
1218 |
for (i = 0; i < dest->height; i++) { |
|
1219 |
uint8_t *t0, *t1, *t2, *t3; |
|
1220 |
||
1221 |
j = yacc >> 16; |
|
1222 |
||
1223 |
while (j > k) { |
|
1224 |
k++; |
|
1225 |
if (k + 3 < src->height) { |
|
1226 |
xacc = 0; |
|
1227 |
vs_scanline_resample_4tap_RGB565 (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
1228 |
src->pixels + (k + 3) * src->stride, |
|
1229 |
dest->width, src->width, &xacc, x_increment); |
|
1230 |
} |
|
1231 |
} |
|
1232 |
||
1233 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
1234 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
1235 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
1236 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
1237 |
vs_scanline_merge_4tap_RGB565 (dest->pixels + i * dest->stride, |
|
1238 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
1239 |
||
1240 |
yacc += y_increment; |
|
1241 |
} |
|
1242 |
} |
|
1243 |
||
1244 |
/* note that src and dest are uint16_t, and thus endian dependent */ |
|
1245 |
||
1246 |
#define RGB555_R(x) (((x)&0x7c00)>>8 | ((x)&0x7c00)>>13) |
|
1247 |
#define RGB555_G(x) (((x)&0x03e0)>>3 | ((x)&0x03e0)>>9) |
|
1248 |
#define RGB555_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2) |
|
1249 |
||
1250 |
#define RGB555(r,g,b) \ |
|
1251 |
((((r)<<7)&0x7c00) | (((g)<<2)&0x03e0) | (((b)>>3)&0x001f)) |
|
1252 |
||
1253 |
#ifdef __SYMBIAN32__ |
|
1254 |
EXPORT_C |
|
1255 |
#endif |
|
1256 |
||
1257 |
void |
|
1258 |
vs_scanline_resample_4tap_RGB555 (uint8_t * dest_u8, uint8_t * src_u8, |
|
1259 |
int n, int src_width, int *xacc, int increment) |
|
1260 |
{ |
|
1261 |
int i; |
|
1262 |
int j; |
|
1263 |
int acc; |
|
1264 |
int x; |
|
1265 |
int y, y_r, y_b, y_g; |
|
1266 |
uint16_t *dest = (uint16_t *) dest_u8; |
|
1267 |
uint16_t *src = (uint16_t *) src_u8; |
|
1268 |
||
1269 |
acc = *xacc; |
|
1270 |
for (i = 0; i < n; i++) { |
|
1271 |
j = acc >> 16; |
|
1272 |
x = acc & 0xffff >> 8; |
|
1273 |
||
1274 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
1275 |
y = vs_4tap_taps[x][0] * RGB555_R (src[MAX ((j - 1), 0)]); |
|
1276 |
y += vs_4tap_taps[x][1] * RGB555_R (src[j]); |
|
1277 |
y += vs_4tap_taps[x][2] * RGB555_R (src[(j + 1)]); |
|
1278 |
y += vs_4tap_taps[x][3] * RGB555_R (src[(j + 2)]); |
|
1279 |
} else { |
|
1280 |
y = vs_4tap_taps[x][0] * RGB555_R (src[CLAMP ((j - 1), 0, |
|
1281 |
src_width - 1)]); |
|
1282 |
y += vs_4tap_taps[x][1] * RGB555_R (src[CLAMP (j, 0, src_width - 1)]); |
|
1283 |
y += vs_4tap_taps[x][2] * RGB555_R (src[CLAMP ((j + 1), 0, |
|
1284 |
src_width - 1)]); |
|
1285 |
y += vs_4tap_taps[x][3] * RGB555_R (src[CLAMP ((j + 2), 0, |
|
1286 |
src_width - 1)]); |
|
1287 |
} |
|
1288 |
y += (1 << (SHIFT - 1)); |
|
1289 |
y_r = CLAMP (y >> SHIFT, 0, 255); |
|
1290 |
||
1291 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
1292 |
y = vs_4tap_taps[x][0] * RGB555_G (src[MAX ((j - 1), 0)]); |
|
1293 |
y += vs_4tap_taps[x][1] * RGB555_G (src[j]); |
|
1294 |
y += vs_4tap_taps[x][2] * RGB555_G (src[(j + 1)]); |
|
1295 |
y += vs_4tap_taps[x][3] * RGB555_G (src[(j + 2)]); |
|
1296 |
} else { |
|
1297 |
y = vs_4tap_taps[x][0] * RGB555_G (src[CLAMP ((j - 1), 0, |
|
1298 |
src_width - 1)]); |
|
1299 |
y += vs_4tap_taps[x][1] * RGB555_G (src[CLAMP (j, 0, src_width - 1)]); |
|
1300 |
y += vs_4tap_taps[x][2] * RGB555_G (src[CLAMP ((j + 1), 0, |
|
1301 |
src_width - 1)]); |
|
1302 |
y += vs_4tap_taps[x][3] * RGB555_G (src[CLAMP ((j + 2), 0, |
|
1303 |
src_width - 1)]); |
|
1304 |
} |
|
1305 |
y += (1 << (SHIFT - 1)); |
|
1306 |
y_g = CLAMP (y >> SHIFT, 0, 255); |
|
1307 |
||
1308 |
if (j - 1 >= 0 && j + 2 < src_width) { |
|
1309 |
y = vs_4tap_taps[x][0] * RGB555_B (src[MAX ((j - 1), 0)]); |
|
1310 |
y += vs_4tap_taps[x][1] * RGB555_B (src[j]); |
|
1311 |
y += vs_4tap_taps[x][2] * RGB555_B (src[(j + 1)]); |
|
1312 |
y += vs_4tap_taps[x][3] * RGB555_B (src[(j + 2)]); |
|
1313 |
} else { |
|
1314 |
y = vs_4tap_taps[x][0] * RGB555_B (src[CLAMP ((j - 1), 0, |
|
1315 |
src_width - 1)]); |
|
1316 |
y += vs_4tap_taps[x][1] * RGB555_B (src[CLAMP (j, 0, src_width - 1)]); |
|
1317 |
y += vs_4tap_taps[x][2] * RGB555_B (src[CLAMP ((j + 1), 0, |
|
1318 |
src_width - 1)]); |
|
1319 |
y += vs_4tap_taps[x][3] * RGB555_B (src[CLAMP ((j + 2), 0, |
|
1320 |
src_width - 1)]); |
|
1321 |
} |
|
1322 |
y += (1 << (SHIFT - 1)); |
|
1323 |
y_b = CLAMP (y >> SHIFT, 0, 255); |
|
1324 |
||
1325 |
dest[i] = RGB555 (y_r, y_b, y_g); |
|
1326 |
acc += increment; |
|
1327 |
} |
|
1328 |
*xacc = acc; |
|
1329 |
} |
|
1330 |
#ifdef __SYMBIAN32__ |
|
1331 |
EXPORT_C |
|
1332 |
#endif |
|
1333 |
||
1334 |
||
1335 |
void |
|
1336 |
vs_scanline_merge_4tap_RGB555 (uint8_t * dest_u8, uint8_t * src1_u8, |
|
1337 |
uint8_t * src2_u8, uint8_t * src3_u8, uint8_t * src4_u8, int n, int acc) |
|
1338 |
{ |
|
1339 |
int i; |
|
1340 |
int y, y_r, y_b, y_g; |
|
1341 |
int a, b, c, d; |
|
1342 |
uint16_t *dest = (uint16_t *) dest_u8; |
|
1343 |
uint16_t *src1 = (uint16_t *) src1_u8; |
|
1344 |
uint16_t *src2 = (uint16_t *) src2_u8; |
|
1345 |
uint16_t *src3 = (uint16_t *) src3_u8; |
|
1346 |
uint16_t *src4 = (uint16_t *) src4_u8; |
|
1347 |
||
1348 |
acc = (acc >> 8) & 0xff; |
|
1349 |
a = vs_4tap_taps[acc][0]; |
|
1350 |
b = vs_4tap_taps[acc][1]; |
|
1351 |
c = vs_4tap_taps[acc][2]; |
|
1352 |
d = vs_4tap_taps[acc][3]; |
|
1353 |
||
1354 |
for (i = 0; i < n; i++) { |
|
1355 |
y = a * RGB555_R (src1[i]); |
|
1356 |
y += b * RGB555_R (src2[i]); |
|
1357 |
y += c * RGB555_R (src3[i]); |
|
1358 |
y += d * RGB555_R (src4[i]); |
|
1359 |
y += (1 << (SHIFT - 1)); |
|
1360 |
y_r = CLAMP (y >> SHIFT, 0, 255); |
|
1361 |
||
1362 |
y = a * RGB555_G (src1[i]); |
|
1363 |
y += b * RGB555_G (src2[i]); |
|
1364 |
y += c * RGB555_G (src3[i]); |
|
1365 |
y += d * RGB555_G (src4[i]); |
|
1366 |
y += (1 << (SHIFT - 1)); |
|
1367 |
y_g = CLAMP (y >> SHIFT, 0, 255); |
|
1368 |
||
1369 |
y = a * RGB555_B (src1[i]); |
|
1370 |
y += b * RGB555_B (src2[i]); |
|
1371 |
y += c * RGB555_B (src3[i]); |
|
1372 |
y += d * RGB555_B (src4[i]); |
|
1373 |
y += (1 << (SHIFT - 1)); |
|
1374 |
y_b = CLAMP (y >> SHIFT, 0, 255); |
|
1375 |
||
1376 |
dest[i] = RGB555 (y_r, y_b, y_g); |
|
1377 |
} |
|
1378 |
} |
|
1379 |
#ifdef __SYMBIAN32__ |
|
1380 |
EXPORT_C |
|
1381 |
#endif |
|
1382 |
||
1383 |
||
1384 |
void |
|
1385 |
vs_image_scale_4tap_RGB555 (const VSImage * dest, const VSImage * src, |
|
1386 |
uint8_t * tmpbuf) |
|
1387 |
{ |
|
1388 |
int yacc; |
|
1389 |
int y_increment; |
|
1390 |
int x_increment; |
|
1391 |
int i; |
|
1392 |
int j; |
|
1393 |
int xacc; |
|
1394 |
int k; |
|
1395 |
||
1396 |
if (dest->height == 1) |
|
1397 |
y_increment = 0; |
|
1398 |
else |
|
1399 |
y_increment = ((src->height - 1) << 16) / (dest->height - 1); |
|
1400 |
||
1401 |
if (dest->width == 1) |
|
1402 |
x_increment = 0; |
|
1403 |
else |
|
1404 |
x_increment = ((src->width - 1) << 16) / (dest->width - 1); |
|
1405 |
||
1406 |
k = 0; |
|
1407 |
for (i = 0; i < 4; i++) { |
|
1408 |
xacc = 0; |
|
1409 |
vs_scanline_resample_4tap_RGB555 (tmpbuf + i * dest->stride, |
|
1410 |
src->pixels + i * src->stride, dest->width, src->width, |
|
1411 |
&xacc, x_increment); |
|
1412 |
} |
|
1413 |
||
1414 |
yacc = 0; |
|
1415 |
for (i = 0; i < dest->height; i++) { |
|
1416 |
uint8_t *t0, *t1, *t2, *t3; |
|
1417 |
||
1418 |
j = yacc >> 16; |
|
1419 |
||
1420 |
while (j > k) { |
|
1421 |
k++; |
|
1422 |
if (k + 3 < src->height) { |
|
1423 |
xacc = 0; |
|
1424 |
vs_scanline_resample_4tap_RGB555 (tmpbuf + ((k + 3) & 3) * dest->stride, |
|
1425 |
src->pixels + (k + 3) * src->stride, |
|
1426 |
dest->width, src->width, &xacc, x_increment); |
|
1427 |
} |
|
1428 |
} |
|
1429 |
||
1430 |
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride; |
|
1431 |
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride; |
|
1432 |
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride; |
|
1433 |
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride; |
|
1434 |
vs_scanline_merge_4tap_RGB555 (dest->pixels + i * dest->stride, |
|
1435 |
t0, t1, t2, t3, dest->width, yacc & 0xffff); |
|
1436 |
||
1437 |
yacc += y_increment; |
|
1438 |
} |
|
1439 |
} |