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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
#define pr_fmt(fmt) "qoi: " fmt
#include <common.h>
#include <errno.h>
#include <malloc.h>
#include <fb.h>
#include <asm/byteorder.h>
#include <gui/graphic_utils.h>
#include <init.h>
#include <gui/image_renderer.h>
#include <asm/unaligned.h>
#define QOI_NO_STDIO
#define QOI_IMPLEMENTATION
#include "qoi.h"
static struct image *qoi_open(char *inbuf, int insize)
{
struct image *img;
void *data;
qoi_desc qoi;
img = calloc(1, sizeof(*img));
if (!img)
return ERR_PTR(-ENOMEM);
data = qoi_decode(inbuf, insize, &qoi, 0);
if (!data) {
free(img);
return ERR_PTR(-ENOMEM);
}
img->data = data;
img->height = qoi.height;
img->width = qoi.width;
img->bits_per_pixel = qoi.channels * 8;
pr_debug("%d x %d x %d data@0x%p\n", img->width, img->height,
img->bits_per_pixel, img->data);
return img;
}
static void qoi_close(struct image *img)
{
free(img->data);
}
static int qoi_renderer(struct screen *sc, struct surface *s, struct image *img)
{
int alpha = img->bits_per_pixel == (4 * 8);
int width = s->width;
int height = s->height;
int startx = s->x;
int starty = s->y;
void *buf;
if (s->width < 0)
width = img->width;
if (s->height < 0)
height = img->height;
if (startx < 0) {
startx = (sc->s.width - width) / 2;
if (startx < 0)
startx = 0;
}
if (starty < 0) {
starty = (sc->s.height - height) / 2;
if (starty < 0)
starty = 0;
}
width = min(width, sc->s.width - startx);
height = min(height, sc->s.height - starty);
buf = gui_screen_render_buffer(sc);
gu_rgba_blend(sc->info, img, buf, height, width, startx, starty, alpha);
return img->height;
}
static struct image_renderer qoi = {
.type = filetype_qoi,
.open = qoi_open,
.close = qoi_close,
.renderer = qoi_renderer,
};
static int qoi_init(void)
{
return image_renderer_register(&qoi);
}
fs_initcall(qoi_init);
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