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anime4k_ispc.cpp
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anime4k_ispc.cpp
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#include "anime4k_ispc.h"
#include "instrument.h"
#include "anime4k_kernel_ispc.h"
#include <stdlib.h>
static inline float min(float a, float b)
{
return a < b ? a : b;
}
Anime4kIspc::Anime4kIspc(
unsigned int width, unsigned int height, unsigned char *image,
unsigned int new_width, unsigned int new_height)
{
old_width_ = width;
old_height_ = height;
image_ = image;
width_ = new_width;
height_ = new_height;
/* ghost pixels added to avoid out-of-bounds */
unsigned int old_pixels = (width + 2) * (height + 2);
unsigned int pixels = (new_width + 2) * (new_height + 2);
original_red_ = new float[old_pixels];
original_green_ = new float[old_pixels];
original_blue_ = new float[old_pixels];
enlarge_red_ = new float[pixels];
enlarge_green_ = new float[pixels];
enlarge_blue_ = new float[pixels];
lum1_ = new float[pixels];
thinlines_red_ = new float[pixels];
thinlines_green_ = new float[pixels];
thinlines_blue_ = new float[pixels];
lum2_ = new float[pixels];
gradients_ = new float[pixels];
// result does not need ghost pixels
result_ = new unsigned char[4 * new_width * new_height];
strength_thinlines_ =
min((float)new_width / width / 6, 1.0f);
strength_refine_ =
min((float)new_width / width / 2, 1.0f);
}
static void extend(float *buf, unsigned int width, unsigned int height)
{
unsigned int new_width = width + 2;
for (unsigned int i = 1; i <= height; i++) {
/* left */
int left = i * new_width;
buf[left] = buf[left + 1];
/* right */
int right = i * new_width + width;
buf[right + 1] = buf[right];
}
for (unsigned int i = 0; i < new_width; i++) {
/* top */
buf[i] = buf[i + new_width];
/* bottom */
int bottom_from = height * new_width + i;
int bottom_to = bottom_from + new_width;
buf[bottom_to] = buf[bottom_from];
}
}
void Anime4kIspc::run()
{
START_ACTIVITY(ACTIVITY_DECODE);
ispc::decode(old_width_, old_height_, (int *)image_,
original_red_, original_green_, original_blue_);
extend(original_red_, old_width_, old_height_);
extend(original_green_, old_width_, old_height_);
extend(original_blue_, old_width_, old_height_);
FINISH_ACTIVITY(ACTIVITY_DECODE);
START_ACTIVITY(ACTIVITY_LINEAR);
ispc::linear_upscale(old_width_, old_height_,
original_red_, original_green_, original_blue_,
width_, height_,
enlarge_red_, enlarge_green_, enlarge_blue_, lum1_);
extend(enlarge_red_, width_, height_);
extend(enlarge_green_, width_, height_);
extend(enlarge_blue_, width_, height_);
extend(lum1_, width_, height_);
FINISH_ACTIVITY(ACTIVITY_LINEAR);
START_ACTIVITY(ACTIVITY_THINLINES);
ispc::thin_lines(strength_thinlines_, width_, height_,
enlarge_red_, enlarge_green_, enlarge_blue_, lum1_,
thinlines_red_, thinlines_green_, thinlines_blue_, lum2_);
extend(thinlines_red_, width_, height_);
extend(thinlines_green_, width_, height_);
extend(thinlines_blue_, width_, height_);
extend(lum2_, width_, height_);
FINISH_ACTIVITY(ACTIVITY_THINLINES);
START_ACTIVITY(ACTIVITY_GRADIENT);
ispc::compute_gradient(width_, height_, lum2_, gradients_);
extend(gradients_, width_, height_);
FINISH_ACTIVITY(ACTIVITY_GRADIENT);
START_ACTIVITY(ACTIVITY_REFINE);
ispc::refine(strength_refine_, width_, height_,
thinlines_red_, thinlines_green_, thinlines_blue_,
gradients_, (int *)result_);
FINISH_ACTIVITY(ACTIVITY_REFINE);
}
Anime4kIspc::~Anime4kIspc()
{
delete [] original_red_;
delete [] original_green_;
delete [] original_blue_;
delete [] enlarge_red_;
delete [] enlarge_green_;
delete [] enlarge_blue_;
delete [] lum1_;
delete [] thinlines_red_;
delete [] thinlines_green_;
delete [] thinlines_blue_;
delete [] lum2_;
delete [] gradients_;
delete [] result_;
}