Atmosphere/sept/sept-secondary/src/splash.c

/*
 * Copyright (c) 2018 CTCaer
 * Copyright (c) 2018 xamanthas
 * Copyright (c) 2018 Atmosphère-NX
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include "splash.h"
#include "lib/lz.h"
#include "utils.h"

static const uint8_t s_splash[] = {0x00, 0x34, 0x36, 0x4B, 0x34, 0x36, 0x4B, 0x00, 0x06, 0x06, 0x00, 0x0C, 0x0C, 0x00, 0x18, 0x18, 0x00, 0x30, 0x30, 0x00, 0x60, 0x60, 0x00, 0x81, 0x40, 0x81, 0x40, 0x00, 0x83, 0x00, 0x83, 0x00, 0x00, 0x86, 0x00, 0x86, 0x00, 0x00, 0x8C, 0x00, 0x8C, 0x00, 0x00, 0x8D, 0x7F, 0x8D, 0x7F, 0x5A, 0x5C, 0x6D, 0x00, 0x87, 0x5E, 0x87, 0x61, 0x73, 0x75, 0x83, 0xA6, 0xA7, 0xB0, 0xD9, 0xD9, 0xDD, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x04, 0x04, 0xFF, 0xCC, 0xCD, 0xD2, 0x00, 0x87, 0x55, 0x87, 0x6A, 0x9A, 0x9B, 0xA5, 0xE6, 0xE6, 0xE9, 0x00, 0x09, 0x87, 0x67, 0x00, 0x27, 0x87, 0x70, 0x41, 0x43, 0x56, 0x00, 0x87, 0x34, 0x97, 0x35, 0x00, 0x12, 0x87, 0x6A, 0xE6, 0xE6, 0xE9, 0x00, 0x06, 0x15, 0x00, 0x1B, 0x87, 0x70, 0x80, 0x81, 0x8F, 0xF2, 0xF2, 0xF4, 0x00, 0x87, 0x2E, 0x97, 0x74, 0x80, 0x81, 0x8F, 0x00, 0x0C, 0x87, 0x67, 0xB3, 0xB4, 0xBC, 0x73, 0x75, 0x83, 0x00, 0x06, 0x8F, 0x36, 0x9A, 0x9B, 0xA5, 0x00, 0x1B, 0x87, 0x70, 0x67, 0x68, 0x78, 0x00, 0x06, 0x33, 0xD9, 0xD9, 0xDD, 0x00, 0x87, 0x28, 0x8F, 0x66, 0x00, 0x0C, 0x87, 0x6D, 0xCC, 0xCD, 0xD2, 0x4D, 0x4F, 0x62, 0x00, 0x0F, 0x97, 0x62, 0x00, 0x1E, 0x8F, 0x60, 0xB3, 0xB4, 0xBC, 0x00, 0x06, 0x3C, 0xC0, 0xC0, 0xC7, 0x00, 0x87, 0x22, 0x87, 0x6D, 0x00, 0x09, 0x8F, 0x21, 0xFF, 0xFF, 0xFF, 0x8D, 0x8E, 0x9A, 0x00, 0x15, 0x9F, 0x52, 0x00, 0x21, 0x9F, 0x40, 0xCC, 0xCD, 0xD2, 0x00, 0x06, 0x42, 0x67, 0x68, 0x78, 0x00, 0x87, 0x1C, 0x87, 0x6D, 0x41, 0x43, 0x56, 0xF2, 0xF2, 0xF4, 0x00, 0x06, 0x87, 0x2B, 0x80, 0x81, 0x8F, 0x00, 0x18, 0xA7, 0x42, 0x00, 0x21, 0x87, 0x70, 0x4D, 0x4F, 0x62, 0x00, 0x87, 0x25, 0xAF, 0x47, 0x00, 0x06, 0x87, 0x4C, 0xFF, 0xFF, 0xFF, 0xA6, 0xA7, 0xB0, 0x00, 0x1E, 0x24, 0x00, 0x21, 0x87, 0x49, 0x00, 0x09, 0x97, 0x56, 0x00, 0x0F, 0x98, 0x0F, 0x00, 0x87, 0x13, 0x8F, 0x5D, 0xE6, 0xE6, 0xE9, 0x00, 0x21, 0x88, 0x14, 0x00, 0x21, 0x87, 0x70, 0x5A, 0x5C, 0x6D, 0x00, 0x06, 0x87, 0x70, 0x9A, 0x9B, 0xA5, 0x00, 0x87, 0x16, 0x87, 0x70, 0x8D, 0x8E, 0x9A, 0x00, 0x1E, 0x97, 0x4A, 0x00, 0x2D, 0x87, 0x70, 0x34, 0x36, 0x4B, 0x00, 0x21, 0xB7, 0x3A, 0x00, 0x86, 0x7E, 0x87, 0x70, 0x00, 0x06, 0xA6, 0x65, 0xF2, 0xF2, 0xF4, 0x00, 0x24, 0x97, 0x74, 0x00, 0x24, 0x87, 0x46, 0xC0, 0xC0, 0xC7, 0x00, 0x06, 0x88, 0x41, 0x00, 0x87, 0x16, 0x87, 0x70, 0x00, 0x09, 0xBE, 0x6B, 0x00, 0x48, 0x87, 0x70, 0x00, 0x09, 0xA0, 0x0E, 0x00, 0x87, 0x13, 0x9F, 0x43, 0x00, 0x09, 0x9E, 0x6F, 0x00, 0x15, 0xB7, 0x04, 0x00, 0x3F, 0x87, 0x70, 0x00, 0x87, 0x13, 0xB7, 0x16, 0x00, 0x09, 0xBE, 0x77, 0x00, 0x21, 0x87, 0x1C, 0x00, 0x2A, 0x87, 0x70, 0x00, 0x2A, 0x54, 0x00, 0x87, 0x46, 0x87, 0x70, 0x00, 0x09, 0xA8, 0x01, 0x00, 0x87, 0x67, 0x87, 0x70, 0x00, 0x09, 0x97, 0x50, 0x00, 0x87, 0x13, 0xE6, 0x3C, 0x00, 0x09, 0x87, 0x70, 0x73, 0x75, 0x83, 0x00, 0x48, 0x87, 0x70, 0x00, 0x09, 0xC6, 0x73, 0x00, 0x87, 0x16, 0xC6, 0x6D, 0x00, 0x27, 0xC6, 0x1F, 0x00, 0x2A, 0x87, 0x70, 0x00, 0x06, 0x81, 0x86, 0x20, 0x00, 0x1E, 0xC7, 0x3E, 0x00, 0x86, 0x7B, 0x87, 0x73, 0x00, 0x27, 0xC6, 0x1F, 0x00, 0x27, 0x87, 0x70, 0x00, 0x09, 0xDE, 0x43, 0x00, 0x21, 0xB7, 0x61, 0x00, 0x86, 0x78, 0x87, 0x70, 0x00, 0x09, 0x96, 0x7F, 0x00, 0x1E, 0xFD, 0x38, 0x00, 0x27, 0x87, 0x70, 0x00, 0x09, 0x9F, 0x3D, 0x00, 0x1E, 0xCF, 0x2E, 0x00, 0x86, 0x7E, 0x81, 0x9D, 0x25, 0x00, 0x24, 0x97, 0x53, 0x00, 0x24, 0x87, 0x70, 0x00, 0x09, 0xDF, 0x0B, 0xF2, 0xF2, 0xF4, 0x00, 0x87, 0x1C, 0x81, 0x85, 0x76, 0x00, 0x06, 0x97, 0x53, 0xF2, 0xF2, 0xF4, 0x00, 0x1B, 0xCE, 0x12, 0x00, 0x24, 0x87, 0x70, 0xA6, 0xA7, 0xB0, 0x00, 0x87, 0x1F, 0xE6, 0x2D, 0x00, 0x0F, 0x8F, 0x63, 0xD9, 0xD9, 0xDD, 0x00, 0x39, 0x87, 0x70, 0x00, 0x09, 0x45, 0x00, 0x87, 0x1F, 0x8F, 0x5D, 0x00, 0x0F, 0xE5, 0x65, 0x00, 0x18, 0xA6, 0x68, 0x00, 0x1E, 0x87, 0x70, 0x5A, 0x5C, 0x6D, 0x00, 0x09, 0x81, 0x86, 0x32, 0x00, 0x21, 0xB7, 0x5B, 0x00, 0x87, 0x07, 0xB7, 0x19, 0x00, 0x09, 0x81, 0xBC, 0x68, 0xD9, 0xD9, 0xDD, 0x00, 0x12, 0x97, 0x59, 0x00, 0x1B, 0x87, 0x70, 0x00, 0x09, 0xCE, 0x51, 0x00, 0x87, 0x1C, 0xAF, 0x17, 0x00, 0x1E, 0x8F, 0x24, 0xF2, 0xF2, 0xF4, 0x9A, 0x9B, 0xA5, 0x00, 0x0C, 0x97, 0x17, 0x00, 0x15, 0x87, 0x70, 0x67, 0x68, 0x78, 0x00, 0x09, 0x81, 0x9D, 0x34, 0x00, 0x87, 0x2E, 0x87, 0x6D, 0x00, 0x12, 0x8F, 0x66
static bool g_has_uncompressed = false;

static unsigned char *get_uncompressed_splash(void) {
    unsigned char *splash = (unsigned char *)0xE0000000;
    if (!g_has_uncompressed) {
        LZ_Uncompress(s_splash, splash, sizeof(s_splash));
        g_has_uncompressed = true;
    }
    return splash;
}

void draw_splash(volatile uint32_t *fb) {
    unsigned char *splash = get_uncompressed_splash();
    
    /* Set display background color. */
    for (size_t i = 0; i < 1280 * 768; i++) {
        fb[i] = 0x34364B;
    }
    
    /* Draw actual splash. */
    const size_t x_res = 336;
    const size_t y_res = 392;
    const size_t x_start = (768 - x_res) / 2;
    const size_t y_start = (1280 - y_res) / 2;
    
	size_t pos = 0;
	for (size_t y = y_start; y < (y_start + y_res); y++)
	{
		for (size_t x = x_start; x < (x_start + x_res); x++)
		{
			fb[x + y*768] = splash[pos + 2] | (splash[pos + 1] << 8) | (splash[pos] << 16);
			pos += 3;
		}
	}
}