/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2005 by Dave Chapman * * 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_framebuffer[LCD_FBHEIGHT][LCD_FBWIDTH] IRAM_LCDFRAMEBUFFER CACHEALIGN_AT_LEAST_ATTR(16); 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, .lss_pattern = LCD_DEFAULT_BG, .lse_pattern = LCD_DEFAULT_BG, .lst_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(); } /*** Viewports ***/ void lcd_set_viewport(struct viewport* vp) { if (vp == NULL) current_vp = &default_vp; else current_vp = vp; #if defined(SIMULATOR) /* Force the viewport to be within bounds. If this happens it should * be considered an error - the viewport will not draw as it might be * expected. */ if((unsigned) current_vp->x > (unsigned) LCD_WIDTH || (unsigned) current_vp->y > (unsigned) LCD_HEIGHT || current_vp->x + current_vp->width > LCD_WIDTH || current_vp->y + current_vp->height > LCD_HEIGHT) { #if !defined(HAVE_VIEWPORT_CLIP) DEBUGF("ERROR: " #else DEBUGF("NOTE: " #endif "set_viewport out of bounds: x: %d y: %d width: %d height:%d\n", current_vp->x, current_vp->y, current_vp->width, current_vp->height); } #endif } void lcd_update_viewport(void) { lcd_update_rect(current_vp->x, current_vp->y, current_vp->width, current_vp->height); } void lcd_update_viewport_rect(int x, int y, int width, int height) { lcd_update_rect(current_vp->x + x, current_vp->y + y, width, height); } /*** 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_selector_start(unsigned color) { current_vp->lss_pattern = color; } void lcd_set_selector_end(unsigned color) { current_vp->lse_pattern = color; } void lcd_set_selector_text(unsigned color) { current_vp->lst_pattern = color; } 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); } /*** low-level drawing functions ***/ static void ICODE_ATTR setpixel(fb_data *address) { *address = current_vp->fg_pattern; } static void ICODE_ATTR clearpixel(fb_data *address) { *address = current_vp->bg_pattern; } static void ICODE_ATTR clearimgpixel(fb_data *address) { *address = *(fb_data *)((long)address + lcd_backdrop_offset); } static void ICODE_ATTR flippixel(fb_data *address) { *address = ~(*address); } static void ICODE_ATTR nopixel(fb_data *address) { (void)address; } lcd_fastpixelfunc_type* const lcd_fastpixelfuncs_bgcolor[8] = { flippixel, nopixel, setpixel, setpixel, nopixel, clearpixel, nopixel, clearpixel }; lcd_fastpixelfunc_type* const lcd_fastpixelfuncs_backdrop[8] = { flippixel, nopixel, setpixel, setpixel, nopixel, clearimgpixel, nopixel, clearimgpixel }; lcd_fastpixelfunc_type* const * lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor; void lcd_set_backdrop(fb_data* backdrop) { lcd_backdrop = backdrop; if (backdrop) { lcd_backdrop_offset = (long)backdrop - (long)&lcd_framebuffer[0][0]; lcd_fastpixelfuncs = lcd_fastpixelfuncs_backdrop; } else { lcd_backdrop_offset = 0; lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor; } } fb_data* lcd_get_backdrop(void) { return lcd_backdrop; } /* 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; } /* 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](LCDADDR(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(LCDADDR(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); } /* About Rockbox' internal monochrome bitmap format: * * A bitmap contains one bit for every pixel that defines if that pixel is * black (1) or white (0). Bits within a byte are arranged vertically, LSB * at top. * The bytes are stored in row-major order, with byte 0 being top left, * byte 1 2nd from left etc. The first row of bytes defines pixel rows * 0..7, the second row defines pixel row 8..15 etc. * * This is the mono bitmap format used on all other targets so far; the * pixel packing doesn't really matter on a 8bit+ target. */ /* Draw a partial monochrome bitmap */ void ICODE_ATTR lcd_mono_bitmap_part(const unsigned char *src, int src_x, int src_y, int stride, int x, int y, int width, int height) { const unsigned char *src_end; fb_data *dst, *dst_col; unsigned dmask = 0x100; /* bit 8 == sentinel */ int drmode = current_vp->drawmode; int row; /******************** Image in viewport clipping **********************/ /* nothing to draw? */ if ((width <= 0) || (height <= 0) || (x >= current_vp->width) || (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0)) return; if (x < 0) { width += x; src_x -= x; x = 0; } if (y < 0) { height += y; src_y -= y; y = 0; } if (x + width > current_vp->width) width = current_vp->width - x; if (y + height > current_vp->height) height = current_vp->height - y; /* adjust for viewport */ x += current_vp->x; y += current_vp->y; #if defined(HAVE_VIEWPORT_CLIP) /********************* Viewport on screen clipping ********************/ /* nothing to draw? */ if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0)) return; /* clip image in viewport in screen */ if (x < 0) { width += x; src_x -= x; x = 0; } if (y < 0) { height += y; src_y -= y; y = 0; } if (x + width > LCD_WIDTH) width = LCD_WIDTH - x; if (y + height > LCD_HEIGHT) height = LCD_HEIGHT - y; #endif src += stride * (src_y >> 3) + src_x; /* move starting point */ src_y &= 7; src_end = src + width; dst_col = LCDADDR(x, y); if (drmode & DRMODE_INVERSEVID) { dmask = 0x1ff; /* bit 8 == sentinel */ drmode &= DRMODE_SOLID; /* mask out inversevid */ } /* go through each column and update each pixel */ do { const unsigned char *src_col = src++; unsigned data = (*src_col ^ dmask) >> src_y; int fg, bg; long bo; dst = dst_col; dst_col += COL_INC; row = height; #define UPDATE_SRC do { \ data >>= 1; \ if (data == 0x001) { \ src_col += stride; \ data = *src_col ^ dmask; \ } \ } while (0) switch (drmode) { case DRMODE_COMPLEMENT: do { if (data & 0x01) *dst = ~(*dst); dst += ROW_INC; UPDATE_SRC; } while (--row); break; case DRMODE_BG: if (lcd_backdrop) { bo = lcd_backdrop_offset; do { if (!(data & 0x01)) *dst = *(fb_data *)((long)dst + bo); dst += ROW_INC; UPDATE_SRC; } while (--row); } else { bg = current_vp->bg_pattern; do { if (!(data & 0x01)) *dst = bg; dst += ROW_INC; UPDATE_SRC; } while (--row); } break; case DRMODE_FG: fg = current_vp->fg_pattern; do { if (data & 0x01) *dst = fg; dst += ROW_INC; UPDATE_SRC; } while (--row); break; case DRMODE_SOLID: fg = current_vp->fg_pattern; if (lcd_backdrop) { bo = lcd_backdrop_offset; do { *dst = (data & 0x01) ? fg : *(fb_data *)((long)dst + bo); dst += ROW_INC; UPDATE_SRC; } while (--row); } else { bg = current_vp->bg_pattern; do { *dst = (data & 0x01) ? fg : bg; dst += ROW_INC; UPDATE_SRC; } while (--row); } break; } } while (src < src_end); } /* Draw a full monochrome bitmap */ void lcd_mono_bitmap(const unsigned char *src, int x, int y, int width, int height) { lcd_mono_bitmap_part(src, 0, 0, width, x, y, width, height); } /* About Rockbox' internal alpha channel format (for ALPHA_COLOR_FONT_DEPTH == 2) * * For each pixel, 4bit of alpha information is stored in a byte-stream, * so two pixels are packed into one byte. * The lower nibble is the first pixel, the upper one the second. The stride is * horizontal. E.g row0: pixel0: byte0[0:3], pixel1: byte0[4:7], pixel2: byte1[0:3],... * The format is independant of the internal display orientation and color * representation, as to support the same font files on all displays. * The values go linear from 0 (fully transparent) to 15 (fully opaque). * * This might suggest that rows need to have an even number of pixels. * However this is generally not the case. lcd_alpha_bitmap_part_mix() can deal * with uneven colums (i.e. two rows can share one byte). And font files do * exploit this. * However, this is difficult to do for image files, especially bottom-up bitmaps, * so lcd_bmp() do expect even rows. */ #define ALPHA_COLOR_FONT_DEPTH 2 #define ALPHA_COLOR_LOOKUP_SHIFT (1 << ALPHA_COLOR_FONT_DEPTH) #define ALPHA_COLOR_LOOKUP_SIZE ((1 << ALPHA_COLOR_LOOKUP_SHIFT) - 1) #define ALPHA_COLOR_PIXEL_PER_BYTE (8 >> ALPHA_COLOR_FONT_DEPTH) #define ALPHA_COLOR_PIXEL_PER_WORD (32 >> ALPHA_COLOR_FONT_DEPTH) #ifdef CPU_ARM #define BLEND_INIT do {} while (0) #define BLEND_FINISH do {} while(0) #define BLEND_START(acc, color, alpha) \ asm volatile("mul %0, %1, %2" : "=&r" (acc) : "r" (color), "r" (alpha)) #define BLEND_CONT(acc, color, alpha) \ asm volatile("mla %0, %1, %2, %0" : "+&r" (acc) : "r" (color), "r" (alpha)) #define BLEND_OUT(acc) do {} while (0) #elif defined(CPU_COLDFIRE) #define ALPHA_BITMAP_READ_WORDS #define BLEND_INIT \ unsigned long _macsr = coldfire_get_macsr(); \ coldfire_set_macsr(EMAC_UNSIGNED) #define BLEND_FINISH \ coldfire_set_macsr(_macsr) #define BLEND_START(acc, color, alpha) \ asm volatile("mac.l %0, %1, %%acc0" :: "%d" (color), "d" (alpha)) #define BLEND_CONT BLEND_START #define BLEND_OUT(acc) asm volatile("movclr.l %%acc0, %0" : "=d" (acc)) #else #define BLEND_INIT do {} while (0) #define BLEND_FINISH do {} while(0) #define BLEND_START(acc, color, alpha) ((acc) = (color) * (alpha)) #define BLEND_CONT(acc, color, alpha) ((acc) += (color) * (alpha)) #define BLEND_OUT(acc) do {} while (0) #endif /* Blend the given two colors */ static inline unsigned blend_two_colors(unsigned c1, unsigned c2, unsigned a) { a += a >> (ALPHA_COLOR_LOOKUP_SHIFT - 1); #if (LCD_PIXELFORMAT == RGB565SWAPPED) c1 = swap16(c1); c2 = swap16(c2); #endif unsigned c1l = (c1 | (c1 << 16)) & 0x07e0f81f; unsigned c2l = (c2 | (c2 << 16)) & 0x07e0f81f; unsigned p; BLEND_START(p, c1l, a); BLEND_CONT(p, c2l, ALPHA_COLOR_LOOKUP_SIZE + 1 - a); BLEND_OUT(p); p = (p >> ALPHA_COLOR_LOOKUP_SHIFT) & 0x07e0f81f; p |= (p >> 16); #if (LCD_PIXELFORMAT == RGB565SWAPPED) return swap16(p); #else return p; #endif } /* Blend the given color with the value from the alpha_color_lookup table */ static inline unsigned blend_color(unsigned c, unsigned a) { return blend_two_colors(c, current_vp->fg_pattern, a); } /* Blend an image with an alpha channel * if image is NULL, drawing will happen according to the drawmode * src is the alpha channel (4bit per pixel) */ static void ICODE_ATTR lcd_alpha_bitmap_part_mix(const fb_data* image, const unsigned char *src, int src_x, int src_y, int x, int y, int width, int height, int stride_image, int stride_src) { fb_data *dst, *dst_row; const fb_data *image_row; unsigned dmask = 0x00000000; int drmode = current_vp->drawmode; /* nothing to draw? */ if ((width <= 0) || (height <= 0) || (x >= current_vp->width) || (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0)) return; /* initialize blending */ BLEND_INIT; /* clipping */ if (x < 0) { width += x; src_x -= x; x = 0; } if (y < 0) { height += y; src_y -= y; y = 0; } if (x + width > current_vp->width) width = current_vp->width - x; if (y + height > current_vp->height) height = current_vp->height - y; /* adjust for viewport */ x += current_vp->x; y += current_vp->y; #if defined(HAVE_VIEWPORT_CLIP) /********************* Viewport on screen clipping ********************/ /* nothing to draw? */ if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0)) { BLEND_FINISH; return; } /* clip image in viewport in screen */ if (x < 0) { width += x; src_x -= x; x = 0; } if (y < 0) { height += y; src_y -= y; y = 0; } if (x + width > LCD_WIDTH) width = LCD_WIDTH - x; if (y + height > LCD_HEIGHT) height = LCD_HEIGHT - y; #endif if (drmode & DRMODE_INVERSEVID) { dmask = 0xffffffff; drmode &= DRMODE_SOLID; /* mask out inversevid */ } /* sourcing from an image ignore drawmode. * Set to DRMODE_BG as we use its code path in the switch below */ if (image != NULL) { drmode = DRMODE_BG; } if (drmode == DRMODE_BG) { dmask = ~dmask; } dst_row = LCDADDR(x, y); int col, row = height; unsigned data, pixels; unsigned skip_end = (stride_src - width); unsigned skip_start = src_y * stride_src + src_x; unsigned skip_start_image = STRIDE_MAIN(src_y * stride_image + src_x, src_x * stride_image + src_y); #ifdef ALPHA_BITMAP_READ_WORDS uint32_t *src_w = (uint32_t *)((uintptr_t)src & ~3); skip_start += ALPHA_COLOR_PIXEL_PER_BYTE * ((uintptr_t)src & 3); src_w += skip_start / ALPHA_COLOR_PIXEL_PER_WORD; data = letoh32(*src_w++) ^ dmask; pixels = skip_start % ALPHA_COLOR_PIXEL_PER_WORD; #else src += skip_start / ALPHA_COLOR_PIXEL_PER_BYTE; data = *src ^ dmask; pixels = skip_start % ALPHA_COLOR_PIXEL_PER_BYTE; #endif data >>= pixels * ALPHA_COLOR_LOOKUP_SHIFT; #ifdef ALPHA_BITMAP_READ_WORDS pixels = 8 - pixels; #endif if (image) image += skip_start_image; image_row = image; /* go through the rows and update each pixel */ do { col = width; dst = dst_row; dst_row += ROW_INC; if (image_row) { image = image_row; image_row += STRIDE_MAIN(stride_image,1); } else image = dst; #ifdef ALPHA_BITMAP_READ_WORDS #define UPDATE_SRC_ALPHA do { \ if (--pixels) \ data >>= ALPHA_COLOR_LOOKUP_SHIFT; \ else \ { \ data = letoh32(*src_w++) ^ dmask; \ pixels = ALPHA_COLOR_PIXEL_PER_WORD; \ } \ } while (0) #elif ALPHA_COLOR_PIXEL_PER_BYTE == 2 #define UPDATE_SRC_ALPHA do { \ if (pixels ^= 1) \ data >>= ALPHA_COLOR_LOOKUP_SHIFT; \ else \ data = *(++src) ^ dmask; \ } while (0) #else #define UPDATE_SRC_ALPHA do { \ if (pixels = (++pixels % ALPHA_COLOR_PIXEL_PER_BYTE)) \ data >>= ALPHA_COLOR_LOOKUP_SHIFT; \ else \ data = *(++src) ^ dmask; \ } while (0) #endif /* we don't want to have this in our inner * loop and the codesize increase is minimal */ switch (drmode) { case DRMODE_COMPLEMENT: do { *dst = blend_two_colors(*dst, ~(*dst), data & ALPHA_COLOR_LOOKUP_SIZE ); dst += COL_INC; UPDATE_SRC_ALPHA; } while (--col); break; case DRMODE_BG: if(lcd_backdrop) { uintptr_t bo = lcd_backdrop_offset; do { *dst = blend_two_colors(*(fb_data *)((uintptr_t)dst + bo), *image, data & ALPHA_COLOR_LOOKUP_SIZE ); dst += COL_INC; image += STRIDE_MAIN(1, stride_image); UPDATE_SRC_ALPHA; } while (--col); } else { do { *dst = blend_two_colors(current_vp->bg_pattern, *image, data & ALPHA_COLOR_LOOKUP_SIZE ); dst += COL_INC; image += STRIDE_MAIN(1, stride_image); UPDATE_SRC_ALPHA; } while (--col); } break; case DRMODE_FG: do { *dst = blend_color(*dst, data & ALPHA_COLOR_LOOKUP_SIZE ); dst += COL_INC; UPDATE_SRC_ALPHA; } while (--col); break; case DRMODE_SOLID: if(lcd_backdrop) { uintptr_t bo = lcd_backdrop_offset; do { *dst = blend_color(*(fb_data *)((uintptr_t)dst + bo), data & ALPHA_COLOR_LOOKUP_SIZE ); dst += COL_INC; UPDATE_SRC_ALPHA; } while (--col); } else { do { *dst = blend_color(current_vp->bg_pattern, data & ALPHA_COLOR_LOOKUP_SIZE ); dst += COL_INC; UPDATE_SRC_ALPHA; } while (--col); } break; } #ifdef ALPHA_BITMAP_READ_WORDS if (skip_end < pixels) { pixels -= skip_end; data >>= skip_end * ALPHA_COLOR_LOOKUP_SHIFT; } else { pixels = skip_end - pixels; src_w += pixels / ALPHA_COLOR_PIXEL_PER_WORD; pixels %= ALPHA_COLOR_PIXEL_PER_WORD; data = letoh32(*src_w++) ^ dmask; data >>= pixels * ALPHA_COLOR_LOOKUP_SHIFT; pixels = 8 - pixels; } #else if (skip_end) { pixels += skip_end; if (pixels >= ALPHA_COLOR_PIXEL_PER_BYTE) { src += pixels / ALPHA_COLOR_PIXEL_PER_BYTE; pixels %= ALPHA_COLOR_PIXEL_PER_BYTE; data = *src ^ dmask; data >>= pixels * ALPHA_COLOR_LOOKUP_SHIFT; } else data >>= skip_end * ALPHA_COLOR_LOOKUP_SHIFT; } #endif } while (--row); BLEND_FINISH; } /* 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 = &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 }