/*
 * Copyright 2008-2010, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Artur Wyszynski <harakash@gmail.com>
 */


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <KernelExport.h>

#define __BOOTSPLASH_KERNEL__
#include <boot/images.h>
#include <boot/platform/generic/video_blitter.h>
#include <boot/platform/generic/video_splash.h>

#include <boot_item.h>
#include <debug.h>
#include <frame_buffer_console.h>

#include <boot_splash.h>


//#define TRACE_BOOT_SPLASH 1
#ifdef TRACE_BOOT_SPLASH
#       define TRACE(x...) dprintf(x);
#else
#       define TRACE(x...) ;
#endif


static struct frame_buffer_boot_info *sInfo;
static uint8 *sUncompressedIcons;


//      #pragma mark - exported functions


void
boot_splash_init(uint8 *bootSplash)
{
        TRACE("boot_splash_init: enter\n");

        if (debug_screen_output_enabled())
                return;

        sInfo = (frame_buffer_boot_info *)get_boot_item(FRAME_BUFFER_BOOT_INFO,
                NULL);

        sUncompressedIcons = bootSplash;
}


void
boot_splash_uninit(void)
{
        sInfo = NULL;
}


void
boot_splash_set_stage(int stage)
{
        TRACE("boot_splash_set_stage: stage=%d\n", stage);

        if (sInfo == NULL || stage < 0 || stage >= BOOT_SPLASH_STAGE_MAX)
                return;

        int width, height, x, y;
        compute_splash_icons_placement(sInfo->width, sInfo->height,
                width, height, x, y);

        int stageLeftEdge = width * stage / BOOT_SPLASH_STAGE_MAX;
        int stageRightEdge = width * (stage + 1) / BOOT_SPLASH_STAGE_MAX;

        BlitParameters params;
        params.from = sUncompressedIcons;
        params.fromWidth = kSplashIconsWidth;
        params.fromLeft = stageLeftEdge;
        params.fromTop = 0;
        params.fromRight = stageRightEdge;
        params.fromBottom = height;
        params.to = (uint8*)sInfo->frame_buffer;
        params.toBytesPerRow = sInfo->bytes_per_row;
        params.toLeft = stageLeftEdge + x;
        params.toTop = y;

        blit(params, sInfo->depth);
}