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gstreamer/gst/videoscale/vs_image.c
Mark Nauwelaerts 23dde756e6 videoscale: remove defunct commented code
2012-09-10 14:03:49 +02:00

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/*
* Image Scaling Functions
* Copyright (c) 2005-2012 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 <string.h>
#include "vs_scanline.h"
#include "vs_image.h"
#include "gstvideoscaleorc.h"
#include <gst/gst.h>
#define ROUND_UP_2(x) (((x)+1)&~1)
#define ROUND_UP_4(x) (((x)+3)&~3)
#define ROUND_UP_8(x) (((x)+7)&~7)
void
vs_image_scale_nearest_RGBA (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int prev_j;
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);
acc = 0;
prev_j = -1;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
if (j == prev_j) {
memcpy (dest->pixels + i * dest->stride,
dest->pixels + (i - 1) * dest->stride, dest->width * 4);
} else {
video_scale_orc_resample_nearest_u32 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, 0, x_increment, dest->width);
}
prev_j = j;
acc += y_increment;
}
}
void
vs_image_scale_linear_RGBA (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int y1;
int i;
int j;
int x;
int dest_size;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = dest->width * 4;
#define LINE(x) ((tmpbuf) + (dest_size)*((x)&1))
acc = 0;
video_scale_orc_resample_bilinear_u32 (LINE (0), src->pixels,
0, x_increment, dest->width);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
memcpy (dest->pixels + i * dest->stride, LINE (j), dest_size);
} else {
if (j > y1) {
video_scale_orc_resample_bilinear_u32 (LINE (j),
src->pixels + j * src->stride, 0, x_increment, dest->width);
y1++;
}
if (j >= y1) {
video_scale_orc_resample_bilinear_u32 (LINE (j + 1),
src->pixels + (j + 1) * src->stride, 0, x_increment, dest->width);
y1++;
}
video_scale_orc_merge_linear_u8 (dest->pixels + i * dest->stride,
LINE (j), LINE (j + 1), (x >> 8), dest->width * 4);
}
acc += y_increment;
}
}
void
vs_image_scale_nearest_RGB (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_RGB (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_RGB (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = dest->width * 3;
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_RGB (tmp1, src->pixels, src->width, dest->width,
&xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_RGB (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_RGB (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_RGB (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_RGB (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_RGB (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_RGB (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_RGB (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width, &xacc,
x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_RGB (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
/* YUYV */
void
vs_image_scale_nearest_YUYV (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_YUYV (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_YUYV (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = ROUND_UP_4 (dest->width * 2);
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_YUYV (tmp1, src->pixels, src->width, dest->width,
&xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_YUYV (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_YUYV (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_YUYV (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_YUYV (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_YUYV (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_YUYV (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_YUYV (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_YUYV (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
/* UYVY */
void
vs_image_scale_nearest_UYVY (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_UYVY (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_UYVY (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = ROUND_UP_4 (dest->width * 2);
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_UYVY (tmp1, src->pixels, src->width, dest->width,
&xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_UYVY (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_UYVY (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_UYVY (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_UYVY (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_UYVY (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_UYVY (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_UYVY (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_UYVY (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
/* NV12 */
void
vs_image_scale_nearest_NV12 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_NV12 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_NV12 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = ROUND_UP_4 (dest->width * 2);
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_NV12 (tmp1, src->pixels, src->width, dest->width,
&xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_NV12 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_NV12 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_NV12 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_NV12 (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_NV12 (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_NV12 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_NV12 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_NV12 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
/* greyscale */
void
vs_image_scale_nearest_Y (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
video_scale_orc_resample_nearest_u8 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, 0, x_increment, dest->width);
acc += y_increment;
}
}
void
vs_image_scale_linear_Y (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = dest->width;
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
y2 = -1;
video_scale_orc_resample_bilinear_u8 (tmp1, src->pixels,
0, x_increment, dest->width);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
video_scale_orc_resample_bilinear_u8 (tmp1,
src->pixels + j * src->stride, 0, x_increment, dest->width);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
video_scale_orc_resample_bilinear_u8 (tmp2,
src->pixels + (j + 1) * src->stride, 0, x_increment, dest->width);
y2 = j + 1;
}
if ((x >> 8) == 0) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest->width);
} else {
video_scale_orc_merge_linear_u8 (dest->pixels + i * dest->stride,
tmp1, tmp2, (x >> 8), dest->width);
}
} else if (j == y2) {
if (j + 1 != y1) {
video_scale_orc_resample_bilinear_u8 (tmp1,
src->pixels + (j + 1) * src->stride, 0, x_increment, dest->width);
y1 = j + 1;
}
if ((x >> 8) == 0) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest->width);
} else {
video_scale_orc_merge_linear_u8 (dest->pixels + i * dest->stride,
tmp2, tmp1, (x >> 8), dest->width);
}
} else {
video_scale_orc_resample_bilinear_u8 (tmp1,
src->pixels + j * src->stride, 0, x_increment, dest->width);
y1 = j;
video_scale_orc_resample_bilinear_u8 (tmp2,
src->pixels + (j + 1) * src->stride, 0, x_increment, dest->width);
y2 = (j + 1);
if ((x >> 8) == 0) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest->width);
} else {
video_scale_orc_merge_linear_u8 (dest->pixels + i * dest->stride,
tmp1, tmp2, (x >> 8), dest->width);
}
}
}
acc += y_increment;
}
}
void
vs_image_scale_nearest_Y16 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_Y16 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_Y16 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = 2 * dest->width;
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_Y16 (tmp1, src->pixels, src->width, dest->width,
&xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_Y16 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_Y16 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_Y16 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_Y16 (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_Y16 (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_Y16 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_Y16 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width, &xacc,
x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_Y16 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
/* RGB565 */
void
vs_image_scale_nearest_RGB565 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_RGB565 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_RGB565 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = dest->width * 2;
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_RGB565 (tmp1, src->pixels, src->width,
dest->width, &xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_RGB565 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_RGB565 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_RGB565 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_RGB565 (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_RGB565 (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_RGB565 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_RGB565 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width, &xacc,
x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_RGB565 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
/* RGB555 */
void
vs_image_scale_nearest_RGB555 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int xacc;
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);
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
xacc = 0;
vs_scanline_resample_nearest_RGB555 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
acc += y_increment;
}
}
void
vs_image_scale_linear_RGB555 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
uint8_t *tmp1;
uint8_t *tmp2;
int y1;
int y2;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = dest->width * 2;
tmp1 = tmpbuf;
tmp2 = tmpbuf + dest_size;
acc = 0;
xacc = 0;
y2 = -1;
vs_scanline_resample_linear_RGB555 (tmp1, src->pixels, src->width,
dest->width, &xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
if (j == y1) {
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
} else if (j == y2) {
memcpy (dest->pixels + i * dest->stride, tmp2, dest_size);
} else {
xacc = 0;
vs_scanline_resample_linear_RGB555 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
memcpy (dest->pixels + i * dest->stride, tmp1, dest_size);
}
} else {
if (j == y1) {
if (j + 1 != y2) {
xacc = 0;
vs_scanline_resample_linear_RGB555 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y2 = j + 1;
}
vs_scanline_merge_linear_RGB555 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
} else if (j == y2) {
if (j + 1 != y1) {
xacc = 0;
vs_scanline_resample_linear_RGB555 (tmp1,
src->pixels + (j + 1) * src->stride, src->width, dest->width,
&xacc, x_increment);
y1 = j + 1;
}
vs_scanline_merge_linear_RGB555 (dest->pixels + i * dest->stride,
tmp2, tmp1, dest->width, x);
} else {
xacc = 0;
vs_scanline_resample_linear_RGB555 (tmp1, src->pixels + j * src->stride,
src->width, dest->width, &xacc, x_increment);
y1 = j;
xacc = 0;
vs_scanline_resample_linear_RGB555 (tmp2,
src->pixels + (j + 1) * src->stride, src->width, dest->width, &xacc,
x_increment);
y2 = (j + 1);
vs_scanline_merge_linear_RGB555 (dest->pixels + i * dest->stride,
tmp1, tmp2, dest->width, x);
}
}
acc += y_increment;
}
}
void
vs_image_scale_nearest_AYUV64 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf8)
{
int acc;
int y_increment;
int x_increment;
int i;
int j;
int prev_j;
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);
acc = 0;
prev_j = -1;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
if (j == prev_j) {
memcpy (dest->pixels + i * dest->stride,
dest->pixels + (i - 1) * dest->stride, dest->width * 8);
} else {
int xacc = 0;
vs_scanline_resample_nearest_AYUV64 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
}
prev_j = j;
acc += y_increment;
}
}
void
vs_image_scale_linear_AYUV64 (const VSImage * dest, const VSImage * src,
uint8_t * tmpbuf)
{
int acc;
int y_increment;
int x_increment;
int y1;
int i;
int j;
int x;
int dest_size;
int xacc;
if (dest->height == 1)
y_increment = 0;
else
y_increment = ((src->height - 1) << 16) / (dest->height - 1) - 1;
if (dest->width == 1)
x_increment = 0;
else
x_increment = ((src->width - 1) << 16) / (dest->width - 1) - 1;
dest_size = dest->width * 8;
#undef LINE
#define LINE(x) ((guint16 *)((tmpbuf) + (dest_size)*((x)&1)))
acc = 0;
xacc = 0;
vs_scanline_resample_linear_AYUV64 ((guint8 *) LINE (0),
src->pixels, src->width, dest->width, &xacc, x_increment);
y1 = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (x == 0) {
memcpy (dest->pixels + i * dest->stride, LINE (j), dest_size);
} else {
if (j > y1) {
xacc = 0;
vs_scanline_resample_linear_AYUV64 ((guint8 *) LINE (j),
src->pixels + j * src->stride, src->width, dest->width, &xacc,
x_increment);
y1++;
}
if (j >= y1) {
xacc = 0;
vs_scanline_resample_linear_AYUV64 ((guint8 *) LINE (j + 1),
src->pixels + (j + 1) * src->stride, src->width, dest->width, &xacc,
x_increment);
video_scale_orc_merge_linear_u16 ((guint16 *) (dest->pixels +
i * dest->stride), LINE (j), LINE (j + 1), 65536 - x, x,
dest->width * 4);
y1++;
} else {
video_scale_orc_merge_linear_u16 ((guint16 *) (dest->pixels +
i * dest->stride), LINE (j), LINE (j + 1), 65536 - x, x,
dest->width * 4);
}
}
acc += y_increment;
}
}
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