/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2006 Dan Everton * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "debug.h" #include "uisdl.h" #include "lcd-sdl.h" SDL_Surface* lcd_surface; #ifdef UI_LCD_SPLIT SDL_Surface* lcd_real_surface; /* the surface which represents the real screen */ #endif int lcd_backlight_val; #if LCD_DEPTH <= 8 #ifdef HAVE_BACKLIGHT SDL_Color lcd_backlight_color_zero = {UI_LCD_BGCOLORLIGHT, 0}; SDL_Color lcd_backlight_color_max = {UI_LCD_FGCOLORLIGHT, 0}; #ifdef UI_LCD_SPLIT SDL_Color lcd_backlight_color_split= {UI_LCD_SPLIT_FGCOLORLIGHT, 0}; #endif #endif SDL_Color lcd_color_zero = {UI_LCD_BGCOLOR, 0}; SDL_Color lcd_color_max = {UI_LCD_FGCOLOR, 0}; #ifdef UI_LCD_SPLIT SDL_Color lcd_color_split= {UI_LCD_SPLIT_FGCOLOR, 0}; #endif #endif #if LCD_DEPTH < 8 int lcd_ex_shades = 0; unsigned long (*lcd_ex_getpixel)(int, int) = NULL; #endif static unsigned long get_lcd_pixel(int x, int y) { #if LCD_DEPTH == 1 return ((lcd_framebuffer[y/8][x] >> (y & 7)) & 1); #elif LCD_DEPTH == 2 #if LCD_PIXELFORMAT == HORIZONTAL_PACKING return ((lcd_framebuffer[y][x/4] >> (2 * (~x & 3))) & 3); #elif LCD_PIXELFORMAT == VERTICAL_PACKING return ((lcd_framebuffer[y/4][x] >> (2 * (y & 3))) & 3); #elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED unsigned bits = (lcd_framebuffer[y/8][x] >> (y & 7)) & 0x0101; return (bits | (bits >> 7)) & 3; #endif #elif LCD_DEPTH == 16 #if LCD_PIXELFORMAT == RGB565SWAPPED unsigned bits = lcd_framebuffer[y][x]; return (bits >> 8) | (bits << 8); #else return lcd_framebuffer[y][x]; #endif #endif } void lcd_update(void) { /* update a full screen rect */ lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); } void lcd_update_rect(int x_start, int y_start, int width, int height) { sdl_update_rect(lcd_surface, x_start, y_start, width, height, LCD_WIDTH, LCD_HEIGHT, get_lcd_pixel); sdl_gui_update(lcd_surface, IFSPLIT(lcd_real_surface,) x_start, y_start, width, height, LCD_WIDTH, LCD_HEIGHT, background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0); } #ifdef HAVE_BACKLIGHT void sim_backlight(int value) { lcd_backlight_val = value; #if LCD_DEPTH <= 8 if (value > 0) { #ifdef UI_LCD_SPLIT sdl_set_gradient(lcd_real_surface, &lcd_backlight_color_zero, &lcd_backlight_color_max, &lcd_backlight_color_zero, &lcd_backlight_color_split, 0, (1< 0) { #ifdef UI_LCD_SPLIT sdl_set_gradient(lcd_real_surface, &lcd_backlight_color_max, &lcd_backlight_color_zero, &lcd_backlight_color_split, &lcd_backlight_color_zero, (1< 0) { #ifdef UI_LCD_SPLIT sdl_set_gradient(lcd_real_surface, &lcd_color_max, &lcd_backlight_color_zero, &lcd_color_split, &lcd_backlight_color_zero, (1<> 9 * |G| = |74 -24 -51| |Cb - 128| >> 8 * |B| |74 128 0| |Cr - 128| >> 9 */ #define YFAC (74) #define RVFAC (101) #define GUFAC (-24) #define GVFAC (-51) #define BUFAC (128) static inline int clamp(int val, int min, int max) { if (val < min) val = min; else if (val > max) val = max; return val; } void lcd_yuv_set_options(unsigned options) { (void)options; } /* Draw a partial YUV colour bitmap - similiar behavior to lcd_blit_yuv in the core */ void lcd_blit_yuv(unsigned char * const src[3], int src_x, int src_y, int stride, int x, int y, int width, int height) { const unsigned char *ysrc, *usrc, *vsrc; int linecounter; fb_data *dst, *row_end; long z; /* width and height must be >= 2 and an even number */ width &= ~1; linecounter = height >> 1; #if LCD_WIDTH >= LCD_HEIGHT dst = &lcd_framebuffer[y][x]; row_end = dst + width; #else dst = &lcd_framebuffer[x][LCD_WIDTH - y - 1]; row_end = dst + LCD_WIDTH * width; #endif z = stride * src_y; ysrc = src[0] + z + src_x; usrc = src[1] + (z >> 2) + (src_x >> 1); vsrc = src[2] + (usrc - src[1]); /* stride => amount to jump from end of last row to start of next */ stride -= width; /* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */ do { do { int y, cb, cr, rv, guv, bu, r, g, b; y = YFAC*(*ysrc++ - 16); cb = *usrc++ - 128; cr = *vsrc++ - 128; rv = RVFAC*cr; guv = GUFAC*cb + GVFAC*cr; bu = BUFAC*cb; r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif y = YFAC*(*ysrc++ - 16); r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif } while (dst < row_end); ysrc += stride; usrc -= width >> 1; vsrc -= width >> 1; #if LCD_WIDTH >= LCD_HEIGHT row_end += LCD_WIDTH; dst += LCD_WIDTH - width; #else row_end -= 1; dst -= LCD_WIDTH*width + 1; #endif do { int y, cb, cr, rv, guv, bu, r, g, b; y = YFAC*(*ysrc++ - 16); cb = *usrc++ - 128; cr = *vsrc++ - 128; rv = RVFAC*cr; guv = GUFAC*cb + GVFAC*cr; bu = BUFAC*cb; r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif y = YFAC*(*ysrc++ - 16); r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif } while (dst < row_end); ysrc += stride; usrc += stride >> 1; vsrc += stride >> 1; #if LCD_WIDTH >= LCD_HEIGHT row_end += LCD_WIDTH; dst += LCD_WIDTH - width; #else row_end -= 1; dst -= LCD_WIDTH*width + 1; #endif } while (--linecounter > 0); #if LCD_WIDTH >= LCD_HEIGHT lcd_update_rect(x, y, width, height); #else lcd_update_rect(LCD_WIDTH - y - height, x, height, width); #endif } #endif /* HAVE_LCD_COLOR */