mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-08 18:39:54 +00:00
58e6f33e35
Fix component ordering, it's wrong in both the scanline and merge function so it cancels eachother out and isn't really a except for loss of precision of the green component. Fix calculation of the filter weight
1502 lines
44 KiB
C
1502 lines
44 KiB
C
/*
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* Image Scaling Functions (4 tap)
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* Copyright (c) 2005 David A. Schleef <ds@schleef.org>
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* 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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 <gst/math-compat.h>
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#define SHIFT 10
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static int16_t vs_4tap_taps[256][4];
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static void vs_scanline_resample_4tap_Y (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_Y (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_RGBA (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_RGBA (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_RGB (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_RGB (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_YUYV (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_YUYV (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_UYVY (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_UYVY (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_RGB565 (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_RGB565 (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_RGB555 (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_RGB555 (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_Y16 (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_Y16 (uint8_t * dest, uint8_t * src1,
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uint8_t * src2, uint8_t * src3, uint8_t * src4, int n, int acc);
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static void vs_scanline_resample_4tap_AYUV64 (uint16_t * dest, uint16_t * src,
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int n, int src_width, int *xacc, int increment);
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static void vs_scanline_merge_4tap_AYUV64 (uint16_t * dest, uint16_t * src1,
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uint16_t * src2, uint16_t * src3, uint16_t * src4, int n, int acc);
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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 (G_PI * x) / (G_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 (G_PI * x) / (G_PI * x);
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#endif
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}
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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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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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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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void
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vs_scanline_resample_4tap_Y (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment)
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{
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int i;
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int j;
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int acc;
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int x;
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int y;
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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[j - 1];
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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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} else {
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y = vs_4tap_taps[x][0] * src[CLAMP (j - 1, 0, src_width - 1)];
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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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}
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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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}
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*xacc = acc;
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}
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void
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vs_scanline_merge_4tap_Y (uint8_t * dest, uint8_t * src1, uint8_t * src2,
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uint8_t * src3, uint8_t * src4, int n, int acc)
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{
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int i;
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int y;
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int a, b, c, d;
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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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}
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}
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void
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vs_image_scale_4tap_Y (const VSImage * dest, const VSImage * src,
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uint8_t * tmpbuf)
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{
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int yacc;
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int y_increment;
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int x_increment;
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int i;
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int j;
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int xacc;
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int k;
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if (dest->height == 1)
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y_increment = 0;
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else
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y_increment = ((src->height - 1) << 16) / (dest->height - 1);
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if (dest->width == 1)
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x_increment = 0;
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else
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x_increment = ((src->width - 1) << 16) / (dest->width - 1);
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k = 0;
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for (i = 0; i < 4; i++) {
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xacc = 0;
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vs_scanline_resample_4tap_Y (tmpbuf + i * dest->width,
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src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
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src->width, &xacc, x_increment);
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}
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yacc = 0;
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for (i = 0; i < dest->height; i++) {
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uint8_t *t0, *t1, *t2, *t3;
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j = yacc >> 16;
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while (j > k) {
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k++;
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if (k + 3 < src->height) {
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xacc = 0;
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vs_scanline_resample_4tap_Y (tmpbuf + ((k + 3) & 3) * dest->width,
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src->pixels + (k + 3) * src->stride,
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dest->width, src->width, &xacc, x_increment);
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}
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}
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t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->width;
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t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->width;
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t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->width;
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t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->width;
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vs_scanline_merge_4tap_Y (dest->pixels + i * dest->stride,
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t0, t1, t2, t3, dest->width, yacc & 0xffff);
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yacc += y_increment;
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}
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}
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void
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vs_scanline_resample_4tap_Y16 (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment)
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{
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int i;
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int j;
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int acc;
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int x;
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int y;
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uint16_t *d = (uint16_t *) dest, *s = (uint16_t *) src;
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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] * s[j - 1];
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y += vs_4tap_taps[x][1] * s[j];
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y += vs_4tap_taps[x][2] * s[j + 1];
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y += vs_4tap_taps[x][3] * s[j + 2];
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} else {
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y = vs_4tap_taps[x][0] * s[CLAMP (j - 1, 0, src_width - 1)];
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y += vs_4tap_taps[x][1] * s[CLAMP (j, 0, src_width - 1)];
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y += vs_4tap_taps[x][2] * s[CLAMP (j + 1, 0, src_width - 1)];
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y += vs_4tap_taps[x][3] * s[CLAMP (j + 2, 0, src_width - 1)];
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}
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y += (1 << (SHIFT - 1));
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d[i] = CLAMP (y >> SHIFT, 0, 65535);
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acc += increment;
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}
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*xacc = acc;
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}
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void
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vs_scanline_merge_4tap_Y16 (uint8_t * dest, uint8_t * src1, uint8_t * src2,
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uint8_t * src3, uint8_t * src4, int n, int acc)
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{
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int i;
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int y;
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int a, b, c, d;
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uint16_t *de = (uint16_t *) dest, *s1 = (uint16_t *) src1;
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uint16_t *s2 = (uint16_t *) src2, *s3 = (uint16_t *) src3;
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uint16_t *s4 = (uint16_t *) src4;
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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 * s1[i];
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y += b * s2[i];
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y += c * s3[i];
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y += d * s4[i];
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y += (1 << (SHIFT - 1));
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de[i] = CLAMP (y >> SHIFT, 0, 65535);
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}
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}
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void
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vs_image_scale_4tap_Y16 (const VSImage * dest, const VSImage * src,
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uint8_t * tmpbuf)
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{
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int yacc;
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int y_increment;
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int x_increment;
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int i;
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int j;
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int xacc;
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int k;
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if (dest->height == 1)
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y_increment = 0;
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else
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y_increment = ((src->height - 1) << 16) / (dest->height - 1);
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if (dest->width == 1)
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x_increment = 0;
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else
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x_increment = ((src->width - 1) << 16) / (dest->width - 1);
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k = 0;
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for (i = 0; i < 4; i++) {
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xacc = 0;
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vs_scanline_resample_4tap_Y16 (tmpbuf + i * dest->stride,
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src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
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src->width, &xacc, x_increment);
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}
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yacc = 0;
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for (i = 0; i < dest->height; i++) {
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uint8_t *t0, *t1, *t2, *t3;
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j = yacc >> 16;
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while (j > k) {
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k++;
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if (k + 3 < src->height) {
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xacc = 0;
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vs_scanline_resample_4tap_Y16 (tmpbuf + ((k + 3) & 3) * dest->stride,
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src->pixels + (k + 3) * src->stride,
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dest->width, src->width, &xacc, x_increment);
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}
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}
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t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
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t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
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t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
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t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
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vs_scanline_merge_4tap_Y16 (dest->pixels + i * dest->stride,
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t0, t1, t2, t3, dest->width, yacc & 0xffff);
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yacc += y_increment;
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}
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}
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void
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vs_scanline_resample_4tap_RGBA (uint8_t * dest, uint8_t * src,
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int n, int src_width, int *xacc, int increment)
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{
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int i;
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int j;
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int acc;
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int x;
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int y;
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int off;
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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 & 0xffff) >> 8;
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for (off = 0; off < 4; off++) {
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if (j - 1 >= 0 && j + 2 < src_width) {
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y = vs_4tap_taps[x][0] * src[(j - 1) * 4 + off];
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y += vs_4tap_taps[x][1] * src[j * 4 + off];
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y += vs_4tap_taps[x][2] * src[(j + 1) * 4 + off];
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y += vs_4tap_taps[x][3] * src[(j + 2) * 4 + off];
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} else {
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y = vs_4tap_taps[x][0] *
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src[CLAMP ((j - 1), 0, src_width - 1) * 4 + off];
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y += vs_4tap_taps[x][1] *
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src[CLAMP ((j + 0), 0, src_width - 1) * 4 + off];
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y += vs_4tap_taps[x][2] *
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src[CLAMP ((j + 1), 0, src_width - 1) * 4 + off];
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y += vs_4tap_taps[x][3] *
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src[CLAMP ((j + 2), 0, src_width - 1) * 4 + off];
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}
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y += (1 << (SHIFT - 1));
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dest[i * 4 + off] = CLAMP (y >> SHIFT, 0, 255);
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}
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acc += increment;
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}
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*xacc = acc;
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}
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void
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vs_scanline_merge_4tap_RGBA (uint8_t * dest, uint8_t * src1, uint8_t * src2,
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uint8_t * src3, uint8_t * src4, int n, int acc)
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{
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int i;
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int y;
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int off;
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int a, b, c, d;
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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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for (off = 0; off < 4; off++) {
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y = a * src1[i * 4 + off];
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y += b * src2[i * 4 + off];
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y += c * src3[i * 4 + off];
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y += d * src4[i * 4 + off];
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y += (1 << (SHIFT - 1));
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dest[i * 4 + off] = CLAMP (y >> SHIFT, 0, 255);
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}
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}
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}
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|
|
|
void
|
|
vs_image_scale_4tap_RGBA (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGBA (tmpbuf + i * dest->stride,
|
|
src->pixels + CLAMP (i, 0, src->height) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint8_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGBA (tmpbuf + ((k + 3) & 3) * dest->stride,
|
|
src->pixels + (k + 3) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
|
|
vs_scanline_merge_4tap_RGBA (dest->pixels + i * dest->stride,
|
|
t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_scanline_resample_4tap_RGB (uint8_t * dest, uint8_t * src,
|
|
int n, int src_width, int *xacc, int increment)
|
|
{
|
|
int i;
|
|
int j;
|
|
int acc;
|
|
int x;
|
|
int y;
|
|
int off;
|
|
|
|
acc = *xacc;
|
|
for (i = 0; i < n; i++) {
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
for (off = 0; off < 3; off++) {
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[(j - 1) * 3 + off];
|
|
y += vs_4tap_taps[x][1] * src[j * 3 + off];
|
|
y += vs_4tap_taps[x][2] * src[(j + 1) * 3 + off];
|
|
y += vs_4tap_taps[x][3] * src[(j + 2) * 3 + off];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP ((j - 1) * 3 + off, 0,
|
|
3 * (src_width - 1) + off)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 3 + off, 0,
|
|
3 * (src_width - 1) + off)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP ((j + 1) * 3 + off, 0,
|
|
3 * (src_width - 1) + off)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP ((j + 2) * 3 + off, 0,
|
|
3 * (src_width - 1) + off)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 3 + off] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
acc += increment;
|
|
}
|
|
*xacc = acc;
|
|
}
|
|
|
|
void
|
|
vs_scanline_merge_4tap_RGB (uint8_t * dest, uint8_t * src1, uint8_t * src2,
|
|
uint8_t * src3, uint8_t * src4, int n, int acc)
|
|
{
|
|
int i;
|
|
int y;
|
|
int off;
|
|
int a, b, c, d;
|
|
|
|
acc = (acc >> 8) & 0xff;
|
|
a = vs_4tap_taps[acc][0];
|
|
b = vs_4tap_taps[acc][1];
|
|
c = vs_4tap_taps[acc][2];
|
|
d = vs_4tap_taps[acc][3];
|
|
for (i = 0; i < n; i++) {
|
|
for (off = 0; off < 3; off++) {
|
|
y = a * src1[i * 3 + off];
|
|
y += b * src2[i * 3 + off];
|
|
y += c * src3[i * 3 + off];
|
|
y += d * src4[i * 3 + off];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 3 + off] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_image_scale_4tap_RGB (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGB (tmpbuf + i * dest->stride,
|
|
src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
|
|
src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint8_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGB (tmpbuf + ((k + 3) & 3) * dest->stride,
|
|
src->pixels + (k + 3) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
|
|
vs_scanline_merge_4tap_RGB (dest->pixels + i * dest->stride,
|
|
t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_scanline_resample_4tap_YUYV (uint8_t * dest, uint8_t * src,
|
|
int n, int src_width, int *xacc, int increment)
|
|
{
|
|
int i;
|
|
int j;
|
|
int acc;
|
|
int x;
|
|
int y;
|
|
int quads = (n + 1) / 2;
|
|
int last_y = 2 * (src_width - 1);
|
|
int last_u =
|
|
MAX ((2 * (src_width - 1) % 4 ==
|
|
0) ? 2 * (src_width - 1) + 1 : 2 * (src_width - 1) - 1, 1);
|
|
int last_v =
|
|
MAX ((2 * (src_width - 1) % 4 ==
|
|
2) ? 2 * (src_width - 1) + 1 : 2 * (src_width - 1) - 1, 1);
|
|
|
|
acc = *xacc;
|
|
for (i = 0; i < quads; i++) {
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[j * 2 + 0 - 2];
|
|
y += vs_4tap_taps[x][1] * src[j * 2 + 0];
|
|
y += vs_4tap_taps[x][2] * src[j * 2 + 0 + 2];
|
|
y += vs_4tap_taps[x][3] * src[j * 2 + 0 + 4];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 0 - 2, 0, last_y)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 0, 0, last_y)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 0 + 2, 0, last_y)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 0 + 4, 0, last_y)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
j = acc >> 17;
|
|
x = (acc & 0x1ffff) >> 9;
|
|
|
|
if (2 * j - 1 >= 0 && 2 * j + 4 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 1 - 4, 1)];
|
|
y += vs_4tap_taps[x][1] * src[j * 4 + 1];
|
|
y += vs_4tap_taps[x][2] * src[j * 4 + 1 + 4];
|
|
y += vs_4tap_taps[x][3] * src[j * 4 + 1 + 8];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 1 - 4, 1, last_u)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 1, 1, last_u)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 1 + 4, 1, last_u)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 1 + 8, 1, last_u)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (2 * i + 1 < n) {
|
|
if (2 * j - 1 >= 0 && 2 * j + 4 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 3 - 4, 3)];
|
|
y += vs_4tap_taps[x][1] * src[j * 4 + 3];
|
|
y += vs_4tap_taps[x][2] * src[j * 4 + 3 + 4];
|
|
y += vs_4tap_taps[x][3] * src[j * 4 + 3 + 8];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 3 - 4, 3, last_v)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 3, 3, last_v)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 3 + 4, 3, last_v)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 3 + 8, 3, last_v)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
|
|
acc += increment;
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
if (2 * i + 1 < n) {
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[j * 2 + 0 - 2];
|
|
y += vs_4tap_taps[x][1] * src[j * 2 + 0];
|
|
y += vs_4tap_taps[x][2] * src[j * 2 + 0 + 2];
|
|
y += vs_4tap_taps[x][3] * src[j * 2 + 0 + 4];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 0 - 2, 0, last_y)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 0, 0, last_y)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 0 + 2, 0, last_y)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 0 + 4, 0, last_y)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255);
|
|
acc += increment;
|
|
}
|
|
}
|
|
*xacc = acc;
|
|
}
|
|
|
|
void
|
|
vs_scanline_merge_4tap_YUYV (uint8_t * dest, uint8_t * src1, uint8_t * src2,
|
|
uint8_t * src3, uint8_t * src4, int n, int acc)
|
|
{
|
|
int i;
|
|
int y;
|
|
int a, b, c, d;
|
|
int quads = (n + 1) / 2;
|
|
|
|
acc = (acc >> 8) & 0xff;
|
|
a = vs_4tap_taps[acc][0];
|
|
b = vs_4tap_taps[acc][1];
|
|
c = vs_4tap_taps[acc][2];
|
|
d = vs_4tap_taps[acc][3];
|
|
for (i = 0; i < quads; i++) {
|
|
y = a * src1[i * 4 + 0];
|
|
y += b * src2[i * 4 + 0];
|
|
y += c * src3[i * 4 + 0];
|
|
y += d * src4[i * 4 + 0];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * src1[i * 4 + 1];
|
|
y += b * src2[i * 4 + 1];
|
|
y += c * src3[i * 4 + 1];
|
|
y += d * src4[i * 4 + 1];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (2 * i + 1 < n) {
|
|
y = a * src1[i * 4 + 2];
|
|
y += b * src2[i * 4 + 2];
|
|
y += c * src3[i * 4 + 2];
|
|
y += d * src4[i * 4 + 2];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * src1[i * 4 + 3];
|
|
y += b * src2[i * 4 + 3];
|
|
y += c * src3[i * 4 + 3];
|
|
y += d * src4[i * 4 + 3];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_image_scale_4tap_YUYV (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_YUYV (tmpbuf + i * dest->stride,
|
|
src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
|
|
src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint8_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_YUYV (tmpbuf + ((k + 3) & 3) * dest->stride,
|
|
src->pixels + (k + 3) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
|
|
vs_scanline_merge_4tap_YUYV (dest->pixels + i * dest->stride,
|
|
t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_scanline_resample_4tap_UYVY (uint8_t * dest, uint8_t * src,
|
|
int n, int src_width, int *xacc, int increment)
|
|
{
|
|
int i;
|
|
int j;
|
|
int acc;
|
|
int x;
|
|
int y;
|
|
int quads = (n + 1) / 2;
|
|
int last_y = 2 * (src_width - 1) + 1;
|
|
int last_u =
|
|
MAX ((2 * (src_width - 1) % 4 ==
|
|
0) ? 2 * (src_width - 1) : 2 * (src_width - 1) - 2, 0);
|
|
int last_v =
|
|
MAX ((2 * (src_width - 1) % 4 ==
|
|
2) ? 2 * (src_width - 1) : 2 * (src_width - 1) - 2, 0);
|
|
|
|
acc = *xacc;
|
|
for (i = 0; i < quads; i++) {
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[MAX (j * 2 + 1 - 2, 1)];
|
|
y += vs_4tap_taps[x][1] * src[j * 2 + 1];
|
|
y += vs_4tap_taps[x][2] * src[j * 2 + 1 + 2];
|
|
y += vs_4tap_taps[x][3] * src[j * 2 + 1 + 4];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 1 - 2, 1, last_y)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 1, 1, last_y)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 1 + 2, 1, last_y)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 1 + 4, 1, last_y)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
j = acc >> 17;
|
|
x = (acc & 0x1ffff) >> 9;
|
|
|
|
if (2 * j - 2 >= 0 && 2 * j + 4 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 0 - 4, 0)];
|
|
y += vs_4tap_taps[x][1] * src[j * 4 + 0];
|
|
y += vs_4tap_taps[x][2] * src[j * 4 + 0 + 4];
|
|
y += vs_4tap_taps[x][3] * src[j * 4 + 0 + 8];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 0 - 4, 0, last_u)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 0, 0, last_u)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 0 + 4, 0, last_u)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 0 + 8, 0, last_u)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (2 * i + 1 < n) {
|
|
if (2 * j - 1 >= 0 && 2 * j + 4 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 2 - 4, 2)];
|
|
y += vs_4tap_taps[x][1] * src[j * 4 + 2];
|
|
y += vs_4tap_taps[x][2] * src[j * 4 + 2 + 4];
|
|
y += vs_4tap_taps[x][3] * src[j * 4 + 2 + 8];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 4 + 2 - 4, 2, last_v)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + 2, 2, last_v)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 4 + 2 + 4, 2, last_v)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 4 + 2 + 8, 2, last_v)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
|
|
acc += increment;
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
if (2 * i + 1 < n) {
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[MAX (j * 2 + 1 - 2, 0)];
|
|
y += vs_4tap_taps[x][1] * src[j * 2 + 1];
|
|
y += vs_4tap_taps[x][2] * src[j * 2 + 1 + 2];
|
|
y += vs_4tap_taps[x][3] * src[j * 2 + 1 + 4];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP (j * 2 + 1 - 2, 1, last_y)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 2 + 1, 1, last_y)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP (j * 2 + 1 + 2, 1, last_y)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP (j * 2 + 1 + 4, 1, last_y)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255);
|
|
acc += increment;
|
|
}
|
|
}
|
|
*xacc = acc;
|
|
}
|
|
|
|
void
|
|
vs_scanline_merge_4tap_UYVY (uint8_t * dest, uint8_t * src1, uint8_t * src2,
|
|
uint8_t * src3, uint8_t * src4, int n, int acc)
|
|
{
|
|
int i;
|
|
int y;
|
|
int a, b, c, d;
|
|
int quads = (n + 1) / 2;
|
|
|
|
acc = (acc >> 8) & 0xff;
|
|
a = vs_4tap_taps[acc][0];
|
|
b = vs_4tap_taps[acc][1];
|
|
c = vs_4tap_taps[acc][2];
|
|
d = vs_4tap_taps[acc][3];
|
|
for (i = 0; i < quads; i++) {
|
|
y = a * src1[i * 4 + 0];
|
|
y += b * src2[i * 4 + 0];
|
|
y += c * src3[i * 4 + 0];
|
|
y += d * src4[i * 4 + 0];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * src1[i * 4 + 1];
|
|
y += b * src2[i * 4 + 1];
|
|
y += c * src3[i * 4 + 1];
|
|
y += d * src4[i * 4 + 1];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (2 * i + 1 < n) {
|
|
y = a * src1[i * 4 + 2];
|
|
y += b * src2[i * 4 + 2];
|
|
y += c * src3[i * 4 + 2];
|
|
y += d * src4[i * 4 + 2];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 2] = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * src1[i * 4 + 3];
|
|
y += b * src2[i * 4 + 3];
|
|
y += c * src3[i * 4 + 3];
|
|
y += d * src4[i * 4 + 3];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + 3] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_image_scale_4tap_UYVY (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_UYVY (tmpbuf + i * dest->stride,
|
|
src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
|
|
src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint8_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_UYVY (tmpbuf + ((k + 3) & 3) * dest->stride,
|
|
src->pixels + (k + 3) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
|
|
vs_scanline_merge_4tap_UYVY (dest->pixels + i * dest->stride,
|
|
t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|
|
|
|
/* note that src and dest are uint16_t, and thus endian dependent */
|
|
|
|
#define RGB565_R(x) (((x)&0xf800)>>8 | ((x)&0xf800)>>13)
|
|
#define RGB565_G(x) (((x)&0x07e0)>>3 | ((x)&0x07e0)>>9)
|
|
#define RGB565_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2)
|
|
|
|
#define RGB565(r,g,b) \
|
|
((((r)<<8)&0xf800) | (((g)<<3)&0x07e0) | (((b)>>3)&0x001f))
|
|
|
|
void
|
|
vs_scanline_resample_4tap_RGB565 (uint8_t * dest_u8, uint8_t * src_u8,
|
|
int n, int src_width, int *xacc, int increment)
|
|
{
|
|
int i;
|
|
int j;
|
|
int acc;
|
|
int x;
|
|
int y, y_r, y_b, y_g;
|
|
uint16_t *dest = (uint16_t *) dest_u8;
|
|
uint16_t *src = (uint16_t *) src_u8;
|
|
|
|
acc = *xacc;
|
|
for (i = 0; i < n; i++) {
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * RGB565_R (src[(j - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB565_R (src[j]);
|
|
y += vs_4tap_taps[x][2] * RGB565_R (src[(j + 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB565_R (src[(j + 2)]);
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * RGB565_R (src[CLAMP ((j - 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB565_R (src[CLAMP (j, 0, src_width - 1)]);
|
|
y += vs_4tap_taps[x][2] * RGB565_R (src[CLAMP ((j + 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB565_R (src[CLAMP ((j + 2), 0,
|
|
src_width - 1)]);
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
y_r = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * RGB565_G (src[(j - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB565_G (src[j]);
|
|
y += vs_4tap_taps[x][2] * RGB565_G (src[(j + 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB565_G (src[(j + 2)]);
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * RGB565_G (src[CLAMP ((j - 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB565_G (src[CLAMP (j, 0, src_width - 1)]);
|
|
y += vs_4tap_taps[x][2] * RGB565_G (src[CLAMP ((j + 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB565_G (src[CLAMP ((j + 2), 0,
|
|
src_width - 1)]);
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
y_g = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * RGB565_B (src[(j - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB565_B (src[j]);
|
|
y += vs_4tap_taps[x][2] * RGB565_B (src[(j + 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB565_B (src[(j + 2)]);
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * RGB565_B (src[CLAMP ((j - 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB565_B (src[CLAMP (j, 0, src_width - 1)]);
|
|
y += vs_4tap_taps[x][2] * RGB565_B (src[CLAMP ((j + 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB565_B (src[CLAMP ((j + 2), 0,
|
|
src_width - 1)]);
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
y_b = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
dest[i] = RGB565 (y_r, y_g, y_b);
|
|
acc += increment;
|
|
}
|
|
*xacc = acc;
|
|
}
|
|
|
|
void
|
|
vs_scanline_merge_4tap_RGB565 (uint8_t * dest_u8, uint8_t * src1_u8,
|
|
uint8_t * src2_u8, uint8_t * src3_u8, uint8_t * src4_u8, int n, int acc)
|
|
{
|
|
int i;
|
|
int y, y_r, y_b, y_g;
|
|
int a, b, c, d;
|
|
uint16_t *dest = (uint16_t *) dest_u8;
|
|
uint16_t *src1 = (uint16_t *) src1_u8;
|
|
uint16_t *src2 = (uint16_t *) src2_u8;
|
|
uint16_t *src3 = (uint16_t *) src3_u8;
|
|
uint16_t *src4 = (uint16_t *) src4_u8;
|
|
|
|
acc = (acc >> 8) & 0xff;
|
|
a = vs_4tap_taps[acc][0];
|
|
b = vs_4tap_taps[acc][1];
|
|
c = vs_4tap_taps[acc][2];
|
|
d = vs_4tap_taps[acc][3];
|
|
|
|
for (i = 0; i < n; i++) {
|
|
y = a * RGB565_R (src1[i]);
|
|
y += b * RGB565_R (src2[i]);
|
|
y += c * RGB565_R (src3[i]);
|
|
y += d * RGB565_R (src4[i]);
|
|
y += (1 << (SHIFT - 1));
|
|
y_r = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * RGB565_G (src1[i]);
|
|
y += b * RGB565_G (src2[i]);
|
|
y += c * RGB565_G (src3[i]);
|
|
y += d * RGB565_G (src4[i]);
|
|
y += (1 << (SHIFT - 1));
|
|
y_g = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * RGB565_B (src1[i]);
|
|
y += b * RGB565_B (src2[i]);
|
|
y += c * RGB565_B (src3[i]);
|
|
y += d * RGB565_B (src4[i]);
|
|
y += (1 << (SHIFT - 1));
|
|
y_b = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
dest[i] = RGB565 (y_r, y_g, y_b);
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_image_scale_4tap_RGB565 (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGB565 (tmpbuf + i * dest->stride,
|
|
src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
|
|
src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint8_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGB565 (tmpbuf + ((k + 3) & 3) * dest->stride,
|
|
src->pixels + (k + 3) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
|
|
vs_scanline_merge_4tap_RGB565 (dest->pixels + i * dest->stride,
|
|
t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|
|
|
|
/* note that src and dest are uint16_t, and thus endian dependent */
|
|
|
|
#define RGB555_R(x) (((x)&0x7c00)>>7 | ((x)&0x7c00)>>12)
|
|
#define RGB555_G(x) (((x)&0x03e0)>>2 | ((x)&0x03e0)>>7)
|
|
#define RGB555_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2)
|
|
|
|
#define RGB555(r,g,b) \
|
|
((((r)<<7)&0x7c00) | (((g)<<2)&0x03e0) | (((b)>>3)&0x001f))
|
|
|
|
void
|
|
vs_scanline_resample_4tap_RGB555 (uint8_t * dest_u8, uint8_t * src_u8,
|
|
int n, int src_width, int *xacc, int increment)
|
|
{
|
|
int i;
|
|
int j;
|
|
int acc;
|
|
int x;
|
|
int y, y_r, y_b, y_g;
|
|
uint16_t *dest = (uint16_t *) dest_u8;
|
|
uint16_t *src = (uint16_t *) src_u8;
|
|
|
|
acc = *xacc;
|
|
for (i = 0; i < n; i++) {
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * RGB555_R (src[(j - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB555_R (src[j]);
|
|
y += vs_4tap_taps[x][2] * RGB555_R (src[(j + 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB555_R (src[(j + 2)]);
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * RGB555_R (src[CLAMP ((j - 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB555_R (src[CLAMP (j, 0, src_width - 1)]);
|
|
y += vs_4tap_taps[x][2] * RGB555_R (src[CLAMP ((j + 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB555_R (src[CLAMP ((j + 2), 0,
|
|
src_width - 1)]);
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
y_r = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * RGB555_G (src[(j - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB555_G (src[j]);
|
|
y += vs_4tap_taps[x][2] * RGB555_G (src[(j + 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB555_G (src[(j + 2)]);
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * RGB555_G (src[CLAMP ((j - 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB555_G (src[CLAMP (j, 0, src_width - 1)]);
|
|
y += vs_4tap_taps[x][2] * RGB555_G (src[CLAMP ((j + 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB555_G (src[CLAMP ((j + 2), 0,
|
|
src_width - 1)]);
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
y_g = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * RGB555_B (src[(j - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB555_B (src[j]);
|
|
y += vs_4tap_taps[x][2] * RGB555_B (src[(j + 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB555_B (src[(j + 2)]);
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * RGB555_B (src[CLAMP ((j - 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][1] * RGB555_B (src[CLAMP (j, 0, src_width - 1)]);
|
|
y += vs_4tap_taps[x][2] * RGB555_B (src[CLAMP ((j + 1), 0,
|
|
src_width - 1)]);
|
|
y += vs_4tap_taps[x][3] * RGB555_B (src[CLAMP ((j + 2), 0,
|
|
src_width - 1)]);
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
y_b = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
dest[i] = RGB555 (y_r, y_g, y_b);
|
|
acc += increment;
|
|
}
|
|
*xacc = acc;
|
|
}
|
|
|
|
void
|
|
vs_scanline_merge_4tap_RGB555 (uint8_t * dest_u8, uint8_t * src1_u8,
|
|
uint8_t * src2_u8, uint8_t * src3_u8, uint8_t * src4_u8, int n, int acc)
|
|
{
|
|
int i;
|
|
int y, y_r, y_b, y_g;
|
|
int a, b, c, d;
|
|
uint16_t *dest = (uint16_t *) dest_u8;
|
|
uint16_t *src1 = (uint16_t *) src1_u8;
|
|
uint16_t *src2 = (uint16_t *) src2_u8;
|
|
uint16_t *src3 = (uint16_t *) src3_u8;
|
|
uint16_t *src4 = (uint16_t *) src4_u8;
|
|
|
|
acc = (acc >> 8) & 0xff;
|
|
a = vs_4tap_taps[acc][0];
|
|
b = vs_4tap_taps[acc][1];
|
|
c = vs_4tap_taps[acc][2];
|
|
d = vs_4tap_taps[acc][3];
|
|
|
|
for (i = 0; i < n; i++) {
|
|
y = a * RGB555_R (src1[i]);
|
|
y += b * RGB555_R (src2[i]);
|
|
y += c * RGB555_R (src3[i]);
|
|
y += d * RGB555_R (src4[i]);
|
|
y += (1 << (SHIFT - 1));
|
|
y_r = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * RGB555_G (src1[i]);
|
|
y += b * RGB555_G (src2[i]);
|
|
y += c * RGB555_G (src3[i]);
|
|
y += d * RGB555_G (src4[i]);
|
|
y += (1 << (SHIFT - 1));
|
|
y_g = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
y = a * RGB555_B (src1[i]);
|
|
y += b * RGB555_B (src2[i]);
|
|
y += c * RGB555_B (src3[i]);
|
|
y += d * RGB555_B (src4[i]);
|
|
y += (1 << (SHIFT - 1));
|
|
y_b = CLAMP (y >> SHIFT, 0, 255);
|
|
|
|
dest[i] = RGB555 (y_r, y_g, y_b);
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_image_scale_4tap_RGB555 (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGB555 (tmpbuf + i * dest->stride,
|
|
src->pixels + CLAMP (i, 0, src->height - 1) * src->stride, dest->width,
|
|
src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint8_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_RGB555 (tmpbuf + ((k + 3) & 3) * dest->stride,
|
|
src->pixels + (k + 3) * src->stride,
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest->stride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest->stride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest->stride;
|
|
vs_scanline_merge_4tap_RGB555 (dest->pixels + i * dest->stride,
|
|
t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_scanline_resample_4tap_AYUV64 (uint16_t * dest, uint16_t * src,
|
|
int n, int src_width, int *xacc, int increment)
|
|
{
|
|
int i;
|
|
int j;
|
|
int acc;
|
|
int x;
|
|
int y;
|
|
int off;
|
|
|
|
acc = *xacc;
|
|
for (i = 0; i < n; i++) {
|
|
j = acc >> 16;
|
|
x = (acc & 0xffff) >> 8;
|
|
|
|
for (off = 0; off < 4; off++) {
|
|
if (j - 1 >= 0 && j + 2 < src_width) {
|
|
y = vs_4tap_taps[x][0] * src[(j - 1) * 4 + off];
|
|
y += vs_4tap_taps[x][1] * src[j * 4 + off];
|
|
y += vs_4tap_taps[x][2] * src[(j + 1) * 4 + off];
|
|
y += vs_4tap_taps[x][3] * src[(j + 2) * 4 + off];
|
|
} else {
|
|
y = vs_4tap_taps[x][0] * src[CLAMP ((j - 1) * 4 + off, 0,
|
|
4 * (src_width - 1) + off)];
|
|
y += vs_4tap_taps[x][1] * src[CLAMP (j * 4 + off, 0,
|
|
4 * (src_width - 1) + off)];
|
|
y += vs_4tap_taps[x][2] * src[CLAMP ((j + 1) * 4 + off, 0,
|
|
4 * (src_width - 1) + off)];
|
|
y += vs_4tap_taps[x][3] * src[CLAMP ((j + 2) * 4 + off, 0,
|
|
4 * (src_width - 1) + off)];
|
|
}
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + off] = CLAMP (y >> SHIFT, 0, 255);
|
|
}
|
|
acc += increment;
|
|
}
|
|
*xacc = acc;
|
|
}
|
|
|
|
void
|
|
vs_scanline_merge_4tap_AYUV64 (uint16_t * dest, uint16_t * src1,
|
|
uint16_t * src2, uint16_t * src3, uint16_t * src4, int n, int acc)
|
|
{
|
|
int i;
|
|
int y;
|
|
int off;
|
|
int a, b, c, d;
|
|
|
|
acc = (acc >> 8) & 0xff;
|
|
a = vs_4tap_taps[acc][0];
|
|
b = vs_4tap_taps[acc][1];
|
|
c = vs_4tap_taps[acc][2];
|
|
d = vs_4tap_taps[acc][3];
|
|
for (i = 0; i < n; i++) {
|
|
for (off = 0; off < 4; off++) {
|
|
y = a * src1[i * 4 + off];
|
|
y += b * src2[i * 4 + off];
|
|
y += c * src3[i * 4 + off];
|
|
y += d * src4[i * 4 + off];
|
|
y += (1 << (SHIFT - 1));
|
|
dest[i * 4 + off] = CLAMP (y >> SHIFT, 0, 65535);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
vs_image_scale_4tap_AYUV64 (const VSImage * dest, const VSImage * src,
|
|
uint8_t * tmpbuf8)
|
|
{
|
|
int yacc;
|
|
int y_increment;
|
|
int x_increment;
|
|
int i;
|
|
int j;
|
|
int xacc;
|
|
int k;
|
|
guint16 *tmpbuf = (guint16 *) tmpbuf8;
|
|
/* destination stride in pixels for easier use with tmpbuf variable */
|
|
int dest_pixstride = dest->stride / sizeof (guint16);
|
|
|
|
if (dest->height == 1)
|
|
y_increment = 0;
|
|
else
|
|
y_increment = ((src->height - 1) << 16) / (dest->height - 1);
|
|
|
|
if (dest->width == 1)
|
|
x_increment = 0;
|
|
else
|
|
x_increment = ((src->width - 1) << 16) / (dest->width - 1);
|
|
|
|
k = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_AYUV64 (tmpbuf + i * dest_pixstride,
|
|
(guint16 *) (src->pixels + CLAMP (i, 0, src->height - 1) * src->stride),
|
|
dest->width, src->width, &xacc, x_increment);
|
|
}
|
|
|
|
yacc = 0;
|
|
for (i = 0; i < dest->height; i++) {
|
|
uint16_t *t0, *t1, *t2, *t3;
|
|
|
|
j = yacc >> 16;
|
|
|
|
while (j > k) {
|
|
k++;
|
|
if (k + 3 < src->height) {
|
|
xacc = 0;
|
|
vs_scanline_resample_4tap_AYUV64 (tmpbuf + ((k +
|
|
3) & 3) * dest_pixstride,
|
|
(guint16 *) (src->pixels + (k + 3) * src->stride), dest->width,
|
|
src->width, &xacc, x_increment);
|
|
}
|
|
}
|
|
|
|
t0 = tmpbuf + (CLAMP (j - 1, 0, src->height - 1) & 3) * dest_pixstride;
|
|
t1 = tmpbuf + (CLAMP (j, 0, src->height - 1) & 3) * dest_pixstride;
|
|
t2 = tmpbuf + (CLAMP (j + 1, 0, src->height - 1) & 3) * dest_pixstride;
|
|
t3 = tmpbuf + (CLAMP (j + 2, 0, src->height - 1) & 3) * dest_pixstride;
|
|
vs_scanline_merge_4tap_AYUV64 ((guint16 *) (dest->pixels +
|
|
i * dest->stride), t0, t1, t2, t3, dest->width, yacc & 0xffff);
|
|
|
|
yacc += y_increment;
|
|
}
|
|
}
|