/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2005 by Dave Chapman * Copyright (C) 2009 by Karl Kurbjun * * Rockbox driver for 16-bit colour LCDs * * 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. * ****************************************************************************/ /* to be #included by lcd-16bit*.c */ #if !defined(ROW_INC) || !defined(COL_INC) #error ROW_INC or COL_INC not defined #endif enum fill_opt { OPT_NONE = 0, OPT_SET, OPT_COPY }; /*** globals ***/ fb_data lcd_static_framebuffer[LCD_FBHEIGHT][LCD_FBWIDTH] IRAM_LCDFRAMEBUFFER CACHEALIGN_AT_LEAST_ATTR(16); fb_data *lcd_framebuffer = &lcd_static_framebuffer[0][0]; static fb_data* lcd_backdrop = NULL; static long lcd_backdrop_offset IDATA_ATTR = 0; static struct viewport default_vp = { .x = 0, .y = 0, .width = LCD_WIDTH, .height = LCD_HEIGHT, .font = FONT_SYSFIXED, .drawmode = DRMODE_SOLID, .fg_pattern = LCD_DEFAULT_FG, .bg_pattern = LCD_DEFAULT_BG, }; static struct viewport* current_vp IDATA_ATTR = &default_vp; /* LCD init */ void lcd_init(void) { lcd_clear_display(); /* Call device specific init */ lcd_init_device(); scroll_init(); } /* Clear the whole display */ void lcd_clear_display(void) { struct viewport* old_vp = current_vp; current_vp = &default_vp; lcd_clear_viewport(); current_vp = old_vp; } /*** parameter handling ***/ void lcd_set_drawmode(int mode) { current_vp->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID); } int lcd_get_drawmode(void) { return current_vp->drawmode; } void lcd_set_foreground(unsigned color) { current_vp->fg_pattern = color; } unsigned lcd_get_foreground(void) { return current_vp->fg_pattern; } void lcd_set_background(unsigned color) { current_vp->bg_pattern = color; } unsigned lcd_get_background(void) { return current_vp->bg_pattern; } void lcd_set_drawinfo(int mode, unsigned fg_color, unsigned bg_color) { lcd_set_drawmode(mode); current_vp->fg_pattern = fg_color; current_vp->bg_pattern = bg_color; } int lcd_getwidth(void) { return current_vp->width; } int lcd_getheight(void) { return current_vp->height; } void lcd_setfont(int newfont) { current_vp->font = newfont; } int lcd_getfont(void) { return current_vp->font; } int lcd_getstringsize(const unsigned char *str, int *w, int *h) { return font_getstringsize(str, w, h, current_vp->font); } void lcd_set_backdrop(fb_data* backdrop) { lcd_backdrop = backdrop; if (backdrop) { lcd_backdrop_offset = (intptr_t)backdrop - (intptr_t)lcd_framebuffer; lcd_fastpixelfuncs = lcd_fastpixelfuncs_backdrop; } else { lcd_backdrop_offset = 0; lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor; } } fb_data* lcd_get_backdrop(void) { return lcd_backdrop; } /* Set a single pixel */ void lcd_drawpixel(int x, int y) { if ( ((unsigned)x < (unsigned)current_vp->width) && ((unsigned)y < (unsigned)current_vp->height) #if defined(HAVE_VIEWPORT_CLIP) && ((unsigned)x < (unsigned)LCD_WIDTH) && ((unsigned)y < (unsigned)LCD_HEIGHT) #endif ) lcd_fastpixelfuncs[current_vp->drawmode](FBADDR(current_vp->x+x, current_vp->y+y)); } /* Draw a line */ void lcd_drawline(int x1, int y1, int x2, int y2) { int numpixels; int i; int deltax, deltay; int d, dinc1, dinc2; int x, xinc1, xinc2; int y, yinc1, yinc2; lcd_fastpixelfunc_type *pfunc = lcd_fastpixelfuncs[current_vp->drawmode]; deltay = abs(y2 - y1); if (deltay == 0) { /* DEBUGF("lcd_drawline() called for horizontal line - optimisation.\n"); */ lcd_hline(x1, x2, y1); return; } deltax = abs(x2 - x1); if (deltax == 0) { /* DEBUGF("lcd_drawline() called for vertical line - optimisation.\n"); */ lcd_vline(x1, y1, y2); return; } xinc2 = 1; yinc2 = 1; if (deltax >= deltay) { numpixels = deltax; d = 2 * deltay - deltax; dinc1 = deltay * 2; dinc2 = (deltay - deltax) * 2; xinc1 = 1; yinc1 = 0; } else { numpixels = deltay; d = 2 * deltax - deltay; dinc1 = deltax * 2; dinc2 = (deltax - deltay) * 2; xinc1 = 0; yinc1 = 1; } numpixels++; /* include endpoints */ if (x1 > x2) { xinc1 = -xinc1; xinc2 = -xinc2; } if (y1 > y2) { yinc1 = -yinc1; yinc2 = -yinc2; } x = x1; y = y1; for (i = 0; i < numpixels; i++) { if ( ((unsigned)x < (unsigned)current_vp->width) && ((unsigned)y < (unsigned)current_vp->height) #if defined(HAVE_VIEWPORT_CLIP) && ((unsigned)x < (unsigned)LCD_WIDTH) && ((unsigned)y < (unsigned)LCD_HEIGHT) #endif ) pfunc(FBADDR(x + current_vp->x, y + current_vp->y)); if (d < 0) { d += dinc1; x += xinc1; y += yinc1; } else { d += dinc2; x += xinc2; y += yinc2; } } } /* Draw a rectangular box */ void lcd_drawrect(int x, int y, int width, int height) { if ((width <= 0) || (height <= 0)) return; int x2 = x + width - 1; int y2 = y + height - 1; lcd_vline(x, y, y2); lcd_vline(x2, y, y2); lcd_hline(x, x2, y); lcd_hline(x, x2, y2); } /* Draw a full native bitmap */ void lcd_bitmap(const fb_data *src, int x, int y, int width, int height) { lcd_bitmap_part(src, 0, 0, STRIDE(SCREEN_MAIN, width, height), x, y, width, height); } /* Draw a full native bitmap with a transparent color */ void lcd_bitmap_transparent(const fb_data *src, int x, int y, int width, int height) { lcd_bitmap_transparent_part(src, 0, 0, STRIDE(SCREEN_MAIN, width, height), x, y, width, height); } /* draw alpha bitmap for anti-alias font */ void ICODE_ATTR lcd_alpha_bitmap_part(const unsigned char *src, int src_x, int src_y, int stride, int x, int y, int width, int height) { lcd_alpha_bitmap_part_mix(NULL, src, src_x, src_y, x, y, width, height, 0, stride); } /* Draw a partial bitmap (mono or native) including alpha channel */ void ICODE_ATTR lcd_bmp_part(const struct bitmap* bm, int src_x, int src_y, int x, int y, int width, int height) { int bitmap_stride = STRIDE_MAIN(bm->width, bm->height); if (bm->format == FORMAT_MONO) lcd_mono_bitmap_part(bm->data, src_x, src_y, bitmap_stride, x, y, width, height); else if (bm->alpha_offset > 0) lcd_alpha_bitmap_part_mix((fb_data*)bm->data, bm->data+bm->alpha_offset, src_x, src_y, x, y, width, height, bitmap_stride, ALIGN_UP(bm->width, 2)); else lcd_bitmap_transparent_part((fb_data*)bm->data, src_x, src_y, bitmap_stride, x, y, width, height); } /* Draw a native bitmap with alpha channel */ void ICODE_ATTR lcd_bmp(const struct bitmap *bmp, int x, int y) { lcd_bmp_part(bmp, 0, 0, x, y, bmp->width, bmp->height); } /** * |R| |1.000000 -0.000001 1.402000| |Y'| * |G| = |1.000000 -0.334136 -0.714136| |Pb| * |B| |1.000000 1.772000 0.000000| |Pr| * Scaled, normalized, rounded and tweaked to yield RGB 565: * |R| |74 0 101| |Y' - 16| >> 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; } #ifndef _WIN32 /* * weak attribute doesn't work for win32 as of gcc 4.6.2 and binutils 2.21.52 * When building win32 simulators, we won't be using an optimized version of * lcd_blit_yuv(), so just don't use the weak attribute. */ __attribute__((weak)) #endif void lcd_yuv_set_options(unsigned options) { (void)options; } /* Draw a partial YUV colour bitmap */ #ifndef _WIN32 __attribute__((weak)) #endif 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 = FBADDR(x, y); row_end = dst + width; #else dst = FBADDR(LCD_WIDTH - y - 1, x); 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 = FB_RGBPACK(r >> 6, g >> 6, b >> 6); #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 = FB_RGBPACK(r >> 6, g >> 6, b >> 6); #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 = FB_RGBPACK(r >> 6, g >> 6, b >> 6); #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 = FB_RGBPACK(r >> 6, g >> 6, b >> 6); #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 } /* Fill a rectangle with a gradient. This function draws only the partial * gradient. It assumes the original gradient is src_height high and skips * the first few rows. This is useful for drawing only the bottom half of * a full gradient. * * height == src_height and row_skip == 0 will draw the full gradient * * x, y, width, height - dimensions describing the rectangle * start_rgb - beginning color of the gradient * end_rgb - end color of the gradient * src_height - assumed original height (only height rows will be drawn) * row_skip - how many rows of the original gradient to skip */ void lcd_gradient_fillrect_part(int x, int y, int width, int height, unsigned start_rgb, unsigned end_rgb, int src_height, int row_skip) { int old_pattern = current_vp->fg_pattern; int step_mul, i; int x1, x2; x1 = x; x2 = x + width; if (height == 0) return; step_mul = (1 << 16) / src_height; int h_r = RGB_UNPACK_RED(start_rgb); int h_g = RGB_UNPACK_GREEN(start_rgb); int h_b = RGB_UNPACK_BLUE(start_rgb); int rstep = (h_r - RGB_UNPACK_RED(end_rgb)) * step_mul; int gstep = (h_g - RGB_UNPACK_GREEN(end_rgb)) * step_mul; int bstep = (h_b - RGB_UNPACK_BLUE(end_rgb)) * step_mul; h_r = (h_r << 16) + (1 << 15); h_g = (h_g << 16) + (1 << 15); h_b = (h_b << 16) + (1 << 15); if (row_skip > 0) { h_r -= rstep * row_skip; h_g -= gstep * row_skip; h_b -= bstep * row_skip; } for(i = y; i < y + height; i++) { current_vp->fg_pattern = LCD_RGBPACK(h_r >> 16, h_g >> 16, h_b >> 16); lcd_hline(x1, x2, i); h_r -= rstep; h_g -= gstep; h_b -= bstep; } current_vp->fg_pattern = old_pattern; } /* Fill a rectangle with a gradient. The gradient's color will fade from * start_rgb to end_rgb over the height of the rectangle * * x, y, width, height - dimensions describing the rectangle * start_rgb - beginning color of the gradient * end_rgb - end color of the gradient */ void lcd_gradient_fillrect(int x, int y, int width, int height, unsigned start_rgb, unsigned end_rgb) { lcd_gradient_fillrect_part(x, y, width, height, start_rgb, end_rgb, height, 0); }