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-rw-r--r--gst/videoscale/vs_scanline.c810
1 files changed, 0 insertions, 810 deletions
diff --git a/gst/videoscale/vs_scanline.c b/gst/videoscale/vs_scanline.c
deleted file mode 100644
index d524e73b..00000000
--- a/gst/videoscale/vs_scanline.c
+++ /dev/null
@@ -1,810 +0,0 @@
-/*
- * Image Scaling Functions
- * Copyright (c) 2005 David A. Schleef <ds@schleef.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "vs_scanline.h"
-
-#include <liboil/liboil.h>
-
-/* greyscale, i.e., single componenet */
-
-void
-vs_scanline_downsample_Y (uint8_t * dest, uint8_t * src, int n)
-{
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i] = (src[i * 2] + src[i * 2 + 1]) / 2;
- }
-}
-
-void
-vs_scanline_resample_nearest_Y (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
- dest[i] = (x < 32768 || j + 1 >= src_width) ? src[j] : src[j + 1];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-#include <glib.h>
-void
-vs_scanline_resample_linear_Y (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width)
- dest[i] = (src[j] * (65536 - x) + src[j + 1] * x) >> 16;
- else
- dest[i] = src[j];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_Y (uint8_t * dest, uint8_t * src1, uint8_t * src2,
- int n, int x)
-{
- uint32_t value = x >> 8;
-
- oil_merge_linear_u8 (dest, src1, src2, &value, n);
-}
-
-void
-vs_scanline_downsample_Y16 (uint8_t * dest, uint8_t * src, int n)
-{
- int i;
- uint16_t *d = (uint16_t *) dest, *s = (uint16_t *) src;
-
- for (i = 0; i < n; i++) {
- d[i] = (s[i * 2] + s[i * 2 + 1]) / 2;
- }
-}
-
-void
-vs_scanline_resample_nearest_Y16 (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
- uint16_t *d = (uint16_t *) dest, *s = (uint16_t *) src;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
- d[i] = (x < 32768 || j + 1 >= src_width) ? s[j] : s[j + 1];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-#include <glib.h>
-void
-vs_scanline_resample_linear_Y16 (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
- uint16_t *d = (uint16_t *) dest, *s = (uint16_t *) src;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width)
- d[i] = (s[j] * (65536 - x) + s[j + 1] * x) >> 16;
- else
- d[i] = s[j];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_Y16 (uint8_t * dest, uint8_t * src1, uint8_t * src2,
- int n, int x)
-{
- int i;
- uint16_t *d = (uint16_t *) dest, *s1 = (uint16_t *) src1, *s2 =
- (uint16_t *) src2;
-
- for (i = 0; i < n; i++) {
- d[i] = (s1[i] * (65536 - x) + s2[i] * x) >> 16;
- }
-}
-
-/* RGBA */
-
-void
-vs_scanline_downsample_RGBA (uint8_t * dest, uint8_t * src, int n)
-{
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i * 4 + 0] = (src[i * 8 + 0] + src[i * 8 + 4]) / 2;
- dest[i * 4 + 1] = (src[i * 8 + 1] + src[i * 8 + 5]) / 2;
- dest[i * 4 + 2] = (src[i * 8 + 2] + src[i * 8 + 6]) / 2;
- dest[i * 4 + 3] = (src[i * 8 + 3] + src[i * 8 + 7]) / 2;
- }
-}
-
-void
-vs_scanline_resample_nearest_RGBA (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width) {
- dest[i * 4 + 0] = (x < 32768) ? src[j * 4 + 0] : src[j * 4 + 4];
- dest[i * 4 + 1] = (x < 32768) ? src[j * 4 + 1] : src[j * 4 + 5];
- dest[i * 4 + 2] = (x < 32768) ? src[j * 4 + 2] : src[j * 4 + 6];
- dest[i * 4 + 3] = (x < 32768) ? src[j * 4 + 3] : src[j * 4 + 7];
- } else {
- dest[i * 4 + 0] = src[j * 4 + 0];
- dest[i * 4 + 1] = src[j * 4 + 1];
- dest[i * 4 + 2] = src[j * 4 + 2];
- dest[i * 4 + 3] = src[j * 4 + 3];
- }
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-#include <stdio.h>
-void
-vs_scanline_resample_linear_RGBA (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- uint32_t vals[2];
-
- vals[0] = *accumulator;
- vals[1] = increment;
-
- if (src_width % 2 == 0) {
- oil_resample_linear_argb ((uint32_t *) dest, (uint32_t *) src, n, vals);
- } else if (src_width > 1) {
- if (n > 1)
- oil_resample_linear_argb ((uint32_t *) dest, (uint32_t *) src, n - 1,
- vals);
- dest[4 * (n - 1) + 0] = src[(vals[0] >> 16) + 0];
- dest[4 * (n - 1) + 1] = src[(vals[0] >> 16) + 1];
- dest[4 * (n - 1) + 2] = src[(vals[0] >> 16) + 2];
- dest[4 * (n - 1) + 3] = src[(vals[0] >> 16) + 3];
- vals[0] += increment;
- } else {
- int i;
-
- for (i = 0; i < n; i++) {
- dest[4 * i + 0] = src[0];
- dest[4 * i + 1] = src[1];
- dest[4 * i + 2] = src[2];
- dest[4 * i + 3] = src[3];
- vals[0] += increment;
- }
- }
-
- *accumulator = vals[0];
-}
-
-void
-vs_scanline_merge_linear_RGBA (uint8_t * dest, uint8_t * src1, uint8_t * src2,
- int n, int x)
-{
- uint32_t value = x >> 8;
-
- oil_merge_linear_argb ((uint32_t *) dest, (uint32_t *) src1,
- (uint32_t *) src2, &value, n);
-}
-
-
-/* RGB */
-
-void
-vs_scanline_downsample_RGB (uint8_t * dest, uint8_t * src, int n)
-{
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i * 3 + 0] = (src[i * 6 + 0] + src[i * 6 + 3]) / 2;
- dest[i * 3 + 1] = (src[i * 6 + 1] + src[i * 6 + 4]) / 2;
- dest[i * 3 + 2] = (src[i * 6 + 2] + src[i * 6 + 5]) / 2;
- }
-}
-
-void
-vs_scanline_resample_nearest_RGB (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
- dest[i * 3 + 0] = (x < 32768
- || j + 1 >= src_width) ? src[j * 3 + 0] : src[j * 3 + 3];
- dest[i * 3 + 1] = (x < 32768
- || j + 1 >= src_width) ? src[j * 3 + 1] : src[j * 3 + 4];
- dest[i * 3 + 2] = (x < 32768
- || j + 1 >= src_width) ? src[j * 3 + 2] : src[j * 3 + 5];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_resample_linear_RGB (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width) {
- dest[i * 3 + 0] =
- (src[j * 3 + 0] * (65536 - x) + src[j * 3 + 3] * x) >> 16;
- dest[i * 3 + 1] =
- (src[j * 3 + 1] * (65536 - x) + src[j * 3 + 4] * x) >> 16;
- dest[i * 3 + 2] =
- (src[j * 3 + 2] * (65536 - x) + src[j * 3 + 5] * x) >> 16;
- } else {
- dest[i * 3 + 0] = src[j * 3 + 0];
- dest[i * 3 + 1] = src[j * 3 + 1];
- dest[i * 3 + 2] = src[j * 3 + 2];
- }
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_RGB (uint8_t * dest, uint8_t * src1, uint8_t * src2,
- int n, int x)
-{
- uint32_t value = x >> 8;
-
- oil_merge_linear_u8 (dest, src1, src2, &value, n * 3);
-}
-
-
-/* YUYV */
-
-/* n is the number of pixels */
-/* increment is per Y pixel */
-
-void
-vs_scanline_downsample_YUYV (uint8_t * dest, uint8_t * src, int n)
-{
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i * 4 + 0] = (src[i * 8 + 0] + src[i * 8 + 2]) / 2;
- dest[i * 4 + 1] = (src[i * 8 + 1] + src[i * 8 + 5]) / 2;
- dest[i * 4 + 2] = (src[i * 8 + 4] + src[i * 8 + 6]) / 2;
- dest[i * 4 + 3] = (src[i * 8 + 3] + src[i * 8 + 7]) / 2;
- }
-}
-
-void
-vs_scanline_resample_nearest_YUYV (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
- int quads = (n + 1) / 2;
-
- for (i = 0; i < quads; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
- dest[i * 4 + 0] = (x < 32768
- || j + 1 >= src_width) ? src[j * 2 + 0] : src[j * 2 + 2];
-
- j = acc >> 17;
- x = acc & 0x1ffff;
- dest[i * 4 + 1] = (x < 65536
- || 2 * (j + 2) >= src_width) ? src[j * 4 + 1] : src[j * 4 + 5];
-
- if (2 * i + 1 < n && 2 * (j + 1) < src_width)
- dest[i * 4 + 3] = (x < 65536
- || 2 * (j + 3) >= src_width) ? src[j * 4 + 3] : src[j * 4 + 7];
-
- acc += increment;
-
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (2 * i + 1 < n && j < src_width) {
- dest[i * 4 + 2] = (x < 32768
- || j + 1 >= src_width) ? src[j * 2 + 0] : src[j * 2 + 2];
- acc += increment;
- }
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_resample_linear_YUYV (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
- int quads = (n + 1) / 2;
-
- for (i = 0; i < quads; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width)
- dest[i * 4 + 0] =
- (src[j * 2 + 0] * (65536 - x) + src[j * 2 + 2] * x) >> 16;
- else
- dest[i * 4 + 0] = src[j * 2 + 0];
-
- j = acc >> 17;
- x = acc & 0x1ffff;
-
- if (2 * (j + 2) < src_width)
- dest[i * 4 + 1] =
- (src[j * 4 + 1] * (131072 - x) + src[j * 4 + 5] * x) >> 17;
- else
- dest[i * 4 + 1] = src[j * 4 + 1];
-
- if (2 * i + 1 < n && 2 * (j + 1) < src_width) {
- if (2 * (j + 3) < src_width)
- dest[i * 4 + 3] =
- (src[j * 4 + 3] * (131072 - x) + src[j * 4 + 7] * x) >> 17;
- else
- dest[i * 4 + 3] = src[j * 4 + 3];
- }
-
- acc += increment;
-
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (2 * i + 1 < n && j < src_width) {
- if (j + 1 < src_width)
- dest[i * 4 + 2] =
- (src[j * 2 + 0] * (65536 - x) + src[j * 2 + 2] * x) >> 16;
- else
- dest[i * 4 + 2] = src[j * 2 + 0];
- acc += increment;
- }
- }
-
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_YUYV (uint8_t * dest, uint8_t * src1, uint8_t * src2,
- int n, int x)
-{
- int i;
- int quads = (n + 1) / 2;
-
- for (i = 0; i < quads; i++) {
- dest[i * 4 + 0] =
- (src1[i * 4 + 0] * (65536 - x) + src2[i * 4 + 0] * x) >> 16;
- dest[i * 4 + 1] =
- (src1[i * 4 + 1] * (65536 - x) + src2[i * 4 + 1] * x) >> 16;
-
- if (2 * i + 1 < n) {
- dest[i * 4 + 2] =
- (src1[i * 4 + 2] * (65536 - x) + src2[i * 4 + 2] * x) >> 16;
- dest[i * 4 + 3] =
- (src1[i * 4 + 3] * (65536 - x) + src2[i * 4 + 3] * x) >> 16;
- }
- }
-}
-
-
-/* UYVY */
-
-/* n is the number of bi-pixels */
-/* increment is per Y pixel */
-
-void
-vs_scanline_downsample_UYVY (uint8_t * dest, uint8_t * src, int n)
-{
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i * 4 + 0] = (src[i * 8 + 0] + src[i * 8 + 4]) / 2;
- dest[i * 4 + 1] = (src[i * 8 + 1] + src[i * 8 + 3]) / 2;
- dest[i * 4 + 2] = (src[i * 8 + 2] + src[i * 8 + 6]) / 2;
- dest[i * 4 + 3] = (src[i * 8 + 5] + src[i * 8 + 7]) / 2;
- }
-}
-
-void
-vs_scanline_resample_nearest_UYVY (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
- int quads = (n + 1) / 2;
-
- for (i = 0; i < quads; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- dest[i * 4 + 1] = (x < 32768
- || j + 1 >= src_width) ? src[j * 2 + 1] : src[j * 2 + 3];
-
- j = acc >> 17;
- x = acc & 0x1ffff;
-
- dest[i * 4 + 0] = (x < 65536
- || 2 * (j + 2) >= src_width) ? src[j * 4 + 0] : src[j * 4 + 4];
-
- if (2 * i + 1 < n && 2 * (j + 1) < src_width)
- dest[i * 4 + 2] = (x < 65536
- || 2 * (j + 3) >= src_width) ? src[j * 4 + 2] : src[j * 4 + 6];
-
- acc += increment;
-
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (2 * i + 1 < n && j < src_width) {
- dest[i * 4 + 3] = (x < 32768
- || j + 1 >= src_width) ? src[j * 2 + 1] : src[j * 2 + 3];
- acc += increment;
- }
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_resample_linear_UYVY (uint8_t * dest, uint8_t * src, int src_width,
- int n, int *accumulator, int increment)
-{
- int acc = *accumulator;
- int i;
- int j;
- int x;
- int quads = (n + 1) / 2;
-
- for (i = 0; i < quads; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width)
- dest[i * 4 + 1] =
- (src[j * 2 + 1] * (65536 - x) + src[j * 2 + 3] * x) >> 16;
- else
- dest[i * 4 + 1] = src[j * 2 + 1];
-
- j = acc >> 17;
- x = acc & 0x1ffff;
- if (2 * (j + 2) < src_width)
- dest[i * 4 + 0] =
- (src[j * 4 + 0] * (131072 - x) + src[j * 4 + 4] * x) >> 17;
- else
- dest[i * 4 + 0] = src[j * 4 + 0];
-
- if (i * 2 + 1 < n && 2 * (j + 1) < src_width) {
- if (2 * (j + 3) < src_width)
- dest[i * 4 + 2] =
- (src[j * 4 + 2] * (131072 - x) + src[j * 4 + 6] * x) >> 17;
- else
- dest[i * 4 + 2] = src[j * 4 + 2];
- }
-
- acc += increment;
-
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (2 * i + 1 < n && j < src_width) {
- if (j + 1 < src_width)
- dest[i * 4 + 3] =
- (src[j * 2 + 1] * (65536 - x) + src[j * 2 + 3] * x) >> 16;
- else
- dest[i * 4 + 3] = src[j * 2 + 1];
- acc += increment;
- }
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_UYVY (uint8_t * dest, uint8_t * src1,
- uint8_t * src2, int n, int x)
-{
- int i;
- int quads = (n + 1) / 2;
-
- for (i = 0; i < quads; i++) {
- dest[i * 4 + 0] =
- (src1[i * 4 + 0] * (65536 - x) + src2[i * 4 + 0] * x) >> 16;
- dest[i * 4 + 1] =
- (src1[i * 4 + 1] * (65536 - x) + src2[i * 4 + 1] * x) >> 16;
-
- if (2 * i + 1 < n) {
- dest[i * 4 + 2] =
- (src1[i * 4 + 2] * (65536 - x) + src2[i * 4 + 2] * x) >> 16;
- dest[i * 4 + 3] =
- (src1[i * 4 + 3] * (65536 - x) + src2[i * 4 + 3] * x) >> 16;
- }
- }
-}
-
-
-/* RGB565 */
-
-/* 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_downsample_RGB565 (uint8_t * dest_u8, uint8_t * src_u8, int n)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src = (uint16_t *) src_u8;
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i] = RGB565 (
- (RGB565_R (src[i * 2]) + RGB565_R (src[i * 2 + 1])) / 2,
- (RGB565_G (src[i * 2]) + RGB565_G (src[i * 2 + 1])) / 2,
- (RGB565_B (src[i * 2]) + RGB565_B (src[i * 2 + 1])) / 2);
- }
-}
-
-void
-vs_scanline_resample_nearest_RGB565 (uint8_t * dest_u8, uint8_t * src_u8,
- int src_width, int n, int *accumulator, int increment)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src = (uint16_t *) src_u8;
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
- dest[i] = (x < 32768 || j + 1 >= src_width) ? src[j] : src[j + 1];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_resample_linear_RGB565 (uint8_t * dest_u8, uint8_t * src_u8,
- int src_width, int n, int *accumulator, int increment)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src = (uint16_t *) src_u8;
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width) {
- dest[i] = RGB565 (
- (RGB565_R (src[j]) * (65536 - x) + RGB565_R (src[j + 1]) * x) >> 16,
- (RGB565_G (src[j]) * (65536 - x) + RGB565_G (src[j + 1]) * x) >> 16,
- (RGB565_B (src[j]) * (65536 - x) + RGB565_B (src[j + 1]) * x) >> 16);
- } else {
- dest[i] = RGB565 (RGB565_R (src[j]),
- RGB565_G (src[j]), RGB565_B (src[j]));
- }
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_RGB565 (uint8_t * dest_u8, uint8_t * src1_u8,
- uint8_t * src2_u8, int n, int x)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src1 = (uint16_t *) src1_u8;
- uint16_t *src2 = (uint16_t *) src2_u8;
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i] = RGB565 (
- (RGB565_R (src1[i]) * (65536 - x) + RGB565_R (src2[i]) * x) >> 16,
- (RGB565_G (src1[i]) * (65536 - x) + RGB565_G (src2[i]) * x) >> 16,
- (RGB565_B (src1[i]) * (65536 - x) + RGB565_B (src2[i]) * x) >> 16);
- }
-}
-
-
-/* RGB555 */
-
-/* note that src and dest are uint16_t, and thus endian dependent */
-
-#define RGB555_R(x) (((x)&0x7c00)>>8 | ((x)&0x7c00)>>13)
-#define RGB555_G(x) (((x)&0x03e0)>>3 | ((x)&0x03e0)>>9)
-#define RGB555_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2)
-
-#define RGB555(r,g,b) \
- ((((r)<<7)&0x7c00) | (((g)<<3)&0x03e0) | (((b)>>3)&0x001f))
-
-
-void
-vs_scanline_downsample_RGB555 (uint8_t * dest_u8, uint8_t * src_u8, int n)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src = (uint16_t *) src_u8;
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i] = RGB555 (
- (RGB555_R (src[i * 2]) + RGB555_R (src[i * 2 + 1])) / 2,
- (RGB555_G (src[i * 2]) + RGB555_G (src[i * 2 + 1])) / 2,
- (RGB555_B (src[i * 2]) + RGB555_B (src[i * 2 + 1])) / 2);
- }
-}
-
-void
-vs_scanline_resample_nearest_RGB555 (uint8_t * dest_u8, uint8_t * src_u8,
- int src_width, int n, int *accumulator, int increment)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src = (uint16_t *) src_u8;
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
- dest[i] = (x < 32768 || j + 1 >= src_width) ? src[j] : src[j + 1];
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_resample_linear_RGB555 (uint8_t * dest_u8, uint8_t * src_u8,
- int src_width, int n, int *accumulator, int increment)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src = (uint16_t *) src_u8;
- int acc = *accumulator;
- int i;
- int j;
- int x;
-
- for (i = 0; i < n; i++) {
- j = acc >> 16;
- x = acc & 0xffff;
-
- if (j + 1 < src_width) {
- dest[i] = RGB555 (
- (RGB555_R (src[j]) * (65536 - x) + RGB555_R (src[j + 1]) * x) >> 16,
- (RGB555_G (src[j]) * (65536 - x) + RGB555_G (src[j + 1]) * x) >> 16,
- (RGB555_B (src[j]) * (65536 - x) + RGB555_B (src[j + 1]) * x) >> 16);
- } else {
- dest[i] = RGB555 (RGB555_R (src[j]),
- RGB555_G (src[j]), RGB555_B (src[j]));
- }
-
- acc += increment;
- }
-
- *accumulator = acc;
-}
-
-void
-vs_scanline_merge_linear_RGB555 (uint8_t * dest_u8, uint8_t * src1_u8,
- uint8_t * src2_u8, int n, int x)
-{
- uint16_t *dest = (uint16_t *) dest_u8;
- uint16_t *src1 = (uint16_t *) src1_u8;
- uint16_t *src2 = (uint16_t *) src2_u8;
- int i;
-
- for (i = 0; i < n; i++) {
- dest[i] = RGB555 (
- (RGB555_R (src1[i]) * (65536 - x) + RGB555_R (src2[i]) * x) >> 16,
- (RGB555_G (src1[i]) * (65536 - x) + RGB555_G (src2[i]) * x) >> 16,
- (RGB555_B (src1[i]) * (65536 - x) + RGB555_B (src2[i]) * x) >> 16);
- }
-}
generated by cgit (git 2.34.1) at 2025-05-09 19:41:05 +0000