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/* SPDX-License-Identifier: GPL-2.0-only */
#include <cbfs.h>
#include <vbe.h>
#include <console/console.h>
#include <endian.h>
#include <bootsplash.h>
#include "jpeg.h"
void set_bootsplash(unsigned char *framebuffer, unsigned int x_resolution,
unsigned int y_resolution, unsigned int bytes_per_line,
unsigned int fb_resolution)
{
if ((x_resolution > INT_MAX) || (y_resolution) > INT_MAX) {
printk(BIOS_ERR, "Display resolution way too large.\n");
return;
}
int xres = x_resolution, yres = y_resolution;
printk(BIOS_INFO, "Setting up bootsplash in %dx%d@%d\n", x_resolution, y_resolution,
fb_resolution);
size_t filesize;
unsigned char *jpeg = cbfs_map("bootsplash.jpg", &filesize);
if (!jpeg) {
printk(BIOS_ERR, "Could not find bootsplash.jpg\n");
return;
}
unsigned int image_width, image_height;
const char *err = jpeg_fetch_size(jpeg, filesize, &image_width, &image_height);
if (err != NULL) {
printk(BIOS_ERR, "Could not parse bootsplash.jpg: %s\n", err);
return;
}
printk(BIOS_DEBUG, "Bootsplash image resolution: %dx%d\n", image_width, image_height);
if (image_width > xres || image_height > yres) {
printk(BIOS_NOTICE, "Bootsplash image can't fit framebuffer.\n");
cbfs_unmap(jpeg);
return;
}
/* center image: */
framebuffer += (yres - image_height) / 2 * bytes_per_line
+ (xres - image_width) / 2 * (fb_resolution / 8);
err = jpeg_decode(jpeg, filesize, framebuffer, image_width, image_height,
bytes_per_line, fb_resolution);
cbfs_unmap(jpeg);
if (err != NULL) {
printk(BIOS_ERR, "Could not decode bootsplash.jpg: %s\n", err);
return;
}
printk(BIOS_INFO, "Bootsplash loaded\n");
}
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