99eee16a13
In the JPEG decoder, use `bytes_per_line` instead of `width` for address calculations, to allow for bigger framebuffers. When calling jpeg_decode(), add an offset to the framebuffer address so the picture gets centered. Change-Id: I0174bdccfaad425e708a5fa50bcb28a1b98a23f7 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/76424 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin L Roth <gaumless@gmail.com> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Subrata Banik <subratabanik@google.com>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <cbfs.h>
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#include <vbe.h>
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#include <console/console.h>
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#include <endian.h>
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#include <bootsplash.h>
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#include <stdlib.h>
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#include "jpeg.h"
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void set_bootsplash(unsigned char *framebuffer, unsigned int x_resolution,
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unsigned int y_resolution, unsigned int bytes_per_line,
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unsigned int fb_resolution)
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{
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printk(BIOS_INFO, "Setting up bootsplash in %dx%d@%d\n", x_resolution, y_resolution,
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fb_resolution);
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struct jpeg_decdata *decdata;
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unsigned char *jpeg = cbfs_map("bootsplash.jpg", NULL);
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if (!jpeg) {
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printk(BIOS_ERR, "Could not find bootsplash.jpg\n");
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return;
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}
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int image_width, image_height;
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jpeg_fetch_size(jpeg, &image_width, &image_height);
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printk(BIOS_DEBUG, "Bootsplash image resolution: %dx%d\n", image_width, image_height);
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if (image_width > x_resolution || image_height > y_resolution) {
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printk(BIOS_NOTICE, "Bootsplash image can't fit framebuffer.\n");
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cbfs_unmap(jpeg);
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return;
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}
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/* center image: */
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framebuffer += (y_resolution - image_height) / 2 * bytes_per_line +
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(x_resolution - image_width) / 2 * (fb_resolution / 8);
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decdata = malloc(sizeof(*decdata));
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int ret = jpeg_decode(jpeg, framebuffer, image_width, image_height,
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bytes_per_line, fb_resolution, decdata);
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free(decdata);
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cbfs_unmap(jpeg);
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if (ret != 0) {
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printk(BIOS_ERR, "Bootsplash could not be decoded. jpeg_decode returned %d.\n",
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ret);
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return;
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}
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printk(BIOS_INFO, "Bootsplash loaded\n");
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}
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