| /* 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; |
| if (jpeg_fetch_size(jpeg, filesize, &image_width, &image_height) != 0) { |
| printk(BIOS_ERR, "Could not parse bootsplash.jpg\n"); |
| 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); |
| |
| int ret = jpeg_decode(jpeg, filesize, framebuffer, image_width, image_height, |
| bytes_per_line, fb_resolution); |
| cbfs_unmap(jpeg); |
| if (ret != 0) { |
| printk(BIOS_ERR, "Bootsplash could not be decoded. jpeg_decode returned %d.\n", |
| ret); |
| return; |
| } |
| printk(BIOS_INFO, "Bootsplash loaded\n"); |
| } |