| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006 Jens Arnold |
| * |
| * Rockbox driver for 2bit vertically interleaved 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. |
| * |
| ****************************************************************************/ |
| |
| #include "config.h" |
| |
| #include "lcd.h" |
| #include "kernel.h" |
| #include "thread.h" |
| #include <string.h> |
| #include <stdlib.h> |
| #include "memory.h" |
| #include "file.h" |
| #include "debug.h" |
| #include "system.h" |
| #include "font.h" |
| #include "rbunicode.h" |
| #include "bidi.h" |
| #include "scroll_engine.h" |
| |
| #ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */ |
| #define LCDFN(fn) lcd_ ## fn |
| #define FBFN(fn) fb_ ## fn |
| #define LCDM(ma) LCD_ ## ma |
| #define LCDNAME "lcd_" |
| #define MAIN_LCD |
| #endif |
| |
| /*** globals ***/ |
| |
| FBFN(data) LCDFN(framebuffer)[LCDM(FBHEIGHT)][LCDM(FBWIDTH)] IBSS_ATTR; |
| |
| static const FBFN(data) patterns[4] = {0xFFFF, 0xFF00, 0x00FF, 0x0000}; |
| |
| static FBFN(data) *backdrop = NULL; |
| static long backdrop_offset IDATA_ATTR = 0; |
| |
| static struct viewport default_vp = |
| { |
| .x = 0, |
| .y = 0, |
| .width = LCDM(WIDTH), |
| .height = LCDM(HEIGHT), |
| .font = FONT_SYSFIXED, |
| .drawmode = DRMODE_SOLID, |
| .fg_pattern = LCDM(DEFAULT_FG), |
| .bg_pattern = LCDM(DEFAULT_BG) |
| }; |
| |
| static struct viewport *current_vp IBSS_ATTR; |
| |
| static unsigned fg_pattern IBSS_ATTR; |
| static unsigned bg_pattern IBSS_ATTR; |
| |
| /*** Viewports ***/ |
| |
| void LCDFN(set_viewport)(struct viewport* vp) |
| { |
| if (vp == NULL) |
| current_vp = &default_vp; |
| else |
| current_vp = vp; |
| |
| fg_pattern = patterns[current_vp->fg_pattern & 3]; |
| bg_pattern = patterns[current_vp->bg_pattern & 3]; |
| } |
| |
| void LCDFN(update_viewport)(void) |
| { |
| LCDFN(update_rect)(current_vp->x, current_vp->y, |
| current_vp->width, current_vp->height); |
| } |
| |
| void LCDFN(update_viewport_rect)(int x, int y, int width, int height) |
| { |
| LCDFN(update_rect)(current_vp->x + x, current_vp->y + y, width, height); |
| } |
| |
| /* LCD init */ |
| void LCDFN(init)(void) |
| { |
| LCDFN(set_viewport)(NULL); |
| LCDFN(clear_display)(); |
| #ifndef SIMULATOR |
| LCDFN(init_device)(); |
| #endif |
| #ifdef MAIN_LCD |
| scroll_init(); |
| #endif |
| } |
| |
| /*** parameter handling ***/ |
| |
| #if !defined(MAIN_LCD) && defined(HAVE_LCD_COLOR) |
| /* When compiling for remote LCD and the main LCD is colour. */ |
| unsigned lcd_remote_color_to_native(unsigned color) |
| { |
| unsigned r = (color & 0xf800) >> 10; |
| unsigned g = (color & 0x07e0) >> 5; |
| unsigned b = (color & 0x001f) << 2; |
| /* |
| * |R| |
| * |Y'| = |0.299000 0.587000 0.114000| |G| |
| * |B| |
| */ |
| return (5*r + 9*g + b) >> 8; |
| } |
| #endif |
| |
| void LCDFN(set_drawmode)(int mode) |
| { |
| current_vp->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID); |
| } |
| |
| int LCDFN(get_drawmode)(void) |
| { |
| return current_vp->drawmode; |
| } |
| |
| void LCDFN(set_foreground)(unsigned brightness) |
| { |
| current_vp->fg_pattern = brightness; |
| fg_pattern = patterns[brightness & 3]; |
| } |
| |
| unsigned LCDFN(get_foreground)(void) |
| { |
| return current_vp->fg_pattern; |
| } |
| |
| void LCDFN(set_background)(unsigned brightness) |
| { |
| current_vp->bg_pattern = brightness; |
| bg_pattern = patterns[brightness & 3]; |
| } |
| |
| unsigned LCDFN(get_background)(void) |
| { |
| return current_vp->bg_pattern; |
| } |
| |
| void LCDFN(set_drawinfo)(int mode, unsigned fg_brightness, |
| unsigned bg_brightness) |
| { |
| LCDFN(set_drawmode)(mode); |
| LCDFN(set_foreground)(fg_brightness); |
| LCDFN(set_background)(bg_brightness); |
| } |
| |
| int LCDFN(getwidth)(void) |
| { |
| return current_vp->width; |
| } |
| |
| int LCDFN(getheight)(void) |
| { |
| return current_vp->height; |
| } |
| void LCDFN(setfont)(int newfont) |
| { |
| current_vp->font = newfont; |
| } |
| |
| int LCDFN(getfont)(void) |
| { |
| return current_vp->font; |
| } |
| |
| int LCDFN(getstringsize)(const unsigned char *str, int *w, int *h) |
| { |
| return font_getstringsize(str, w, h, current_vp->font); |
| } |
| |
| /*** low-level drawing functions ***/ |
| |
| static void setpixel(int x, int y) |
| { |
| unsigned mask = 0x0101 << (y & 7); |
| FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x]; |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ fg_pattern) & mask); |
| } |
| |
| static void clearpixel(int x, int y) |
| { |
| unsigned mask = 0x0101 << (y & 7); |
| FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x]; |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ bg_pattern) & mask); |
| } |
| |
| static void clearimgpixel(int x, int y) |
| { |
| unsigned mask = 0x0101 << (y & 7); |
| FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x]; |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ *(FBFN(data) *)((long)address |
| + backdrop_offset)) & mask); |
| } |
| |
| static void flippixel(int x, int y) |
| { |
| unsigned mask = 0x0101 << (y & 7); |
| FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x]; |
| |
| *address ^= mask; |
| } |
| |
| static void nopixel(int x, int y) |
| { |
| (void)x; |
| (void)y; |
| } |
| |
| LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_bgcolor)[8] = { |
| flippixel, nopixel, setpixel, setpixel, |
| nopixel, clearpixel, nopixel, clearpixel |
| }; |
| |
| LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_backdrop)[8] = { |
| flippixel, nopixel, setpixel, setpixel, |
| nopixel, clearimgpixel, nopixel, clearimgpixel |
| }; |
| |
| LCDFN(pixelfunc_type)* const *LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor); |
| |
| /* 'mask' and 'bits' contain 2 bits per pixel */ |
| static void ICODE_ATTR flipblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| *address ^= bits & mask; |
| } |
| |
| static void ICODE_ATTR bgblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ bg_pattern) & mask & ~bits); |
| } |
| |
| static void ICODE_ATTR bgimgblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ *(FBFN(data) *)((long)address |
| + backdrop_offset)) & mask & ~bits); |
| } |
| |
| static void ICODE_ATTR fgblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ fg_pattern) & mask & bits); |
| } |
| |
| static void ICODE_ATTR solidblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| unsigned bgp = bg_pattern; |
| |
| bits = bgp ^ ((bgp ^ fg_pattern) & bits); |
| *address = data ^ ((data ^ bits) & mask); |
| } |
| |
| static void ICODE_ATTR solidimgblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| unsigned bgp = *(FBFN(data) *)((long)address + backdrop_offset); |
| |
| bits = bgp ^ ((bgp ^ fg_pattern) & bits); |
| *address = data ^ ((data ^ bits) & mask); |
| } |
| |
| static void ICODE_ATTR flipinvblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| *address ^= ~bits & mask; |
| } |
| |
| static void ICODE_ATTR bginvblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ bg_pattern) & mask & bits); |
| } |
| |
| static void ICODE_ATTR bgimginvblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ *(FBFN(data) *)((long)address |
| + backdrop_offset)) & mask & bits); |
| } |
| |
| static void ICODE_ATTR fginvblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| |
| *address = data ^ ((data ^ fg_pattern) & mask & ~bits); |
| } |
| |
| static void ICODE_ATTR solidinvblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| unsigned fgp = fg_pattern; |
| |
| bits = fgp ^ ((fgp ^ bg_pattern) & bits); |
| *address = data ^ ((data ^ bits) & mask); |
| } |
| |
| static void ICODE_ATTR solidimginvblock(FBFN(data) *address, unsigned mask, |
| unsigned bits) |
| { |
| unsigned data = *address; |
| unsigned fgp = fg_pattern; |
| |
| bits = fgp ^ ((fgp ^ *(FBFN(data) *)((long)address |
| + backdrop_offset)) & bits); |
| *address = data ^ ((data ^ bits) & mask); |
| } |
| |
| LCDFN(blockfunc_type)* const LCDFN(blockfuncs_bgcolor)[8] = { |
| flipblock, bgblock, fgblock, solidblock, |
| flipinvblock, bginvblock, fginvblock, solidinvblock |
| }; |
| |
| LCDFN(blockfunc_type)* const LCDFN(blockfuncs_backdrop)[8] = { |
| flipblock, bgimgblock, fgblock, solidimgblock, |
| flipinvblock, bgimginvblock, fginvblock, solidimginvblock |
| }; |
| |
| LCDFN(blockfunc_type)* const *LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor); |
| |
| |
| void LCDFN(set_backdrop)(FBFN(data) *bd) |
| { |
| backdrop = bd; |
| if (bd) |
| { |
| backdrop_offset = (long)bd - (long)LCDFN(framebuffer); |
| LCDFN(pixelfuncs) = LCDFN(pixelfuncs_backdrop); |
| LCDFN(blockfuncs) = LCDFN(blockfuncs_backdrop); |
| } |
| else |
| { |
| backdrop_offset = 0; |
| LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor); |
| LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor); |
| } |
| } |
| |
| FBFN(data)* LCDFN(get_backdrop)(void) |
| { |
| return backdrop; |
| } |
| |
| static inline void setblock(FBFN(data) *address, unsigned mask, unsigned bits) |
| { |
| unsigned data = *address; |
| |
| bits ^= data; |
| *address = data ^ (bits & mask); |
| } |
| |
| /*** drawing functions ***/ |
| |
| /* Clear the whole display */ |
| void LCDFN(clear_display)(void) |
| { |
| if (default_vp.drawmode & DRMODE_INVERSEVID) |
| { |
| memset(LCDFN(framebuffer), patterns[default_vp.fg_pattern & 3], |
| sizeof LCDFN(framebuffer)); |
| } |
| else |
| { |
| if (backdrop) |
| memcpy(LCDFN(framebuffer), backdrop, sizeof LCDFN(framebuffer)); |
| else |
| memset(LCDFN(framebuffer), patterns[default_vp.bg_pattern & 3], |
| sizeof LCDFN(framebuffer)); |
| } |
| |
| LCDFN(scroll_info).lines = 0; |
| } |
| |
| /* Clear the current viewport */ |
| void LCDFN(clear_viewport)(void) |
| { |
| int lastmode; |
| |
| if (current_vp == &default_vp) |
| { |
| LCDFN(clear_display)(); |
| } |
| else |
| { |
| lastmode = current_vp->drawmode; |
| |
| /* Invert the INVERSEVID bit and set basic mode to SOLID */ |
| current_vp->drawmode = (~lastmode & DRMODE_INVERSEVID) | |
| DRMODE_SOLID; |
| |
| LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height); |
| |
| current_vp->drawmode = lastmode; |
| |
| LCDFN(scroll_stop)(current_vp); |
| } |
| } |
| |
| /* Set a single pixel */ |
| void LCDFN(drawpixel)(int x, int y) |
| { |
| if (((unsigned)x < (unsigned)current_vp->width) && |
| ((unsigned)y < (unsigned)current_vp->height)) |
| LCDFN(pixelfuncs)[current_vp->drawmode](current_vp->x+x, current_vp->y+y); |
| } |
| |
| /* Draw a line */ |
| void LCDFN(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; |
| LCDFN(pixelfunc_type) *pfunc = LCDFN(pixelfuncs)[current_vp->drawmode]; |
| |
| deltax = abs(x2 - x1); |
| if (deltax == 0) |
| { |
| DEBUGF(LCDNAME "drawline() called for vertical line - optimisation.\n"); |
| LCDFN(vline)(x1, y1, y2); |
| return; |
| } |
| deltay = abs(y2 - y1); |
| if (deltay == 0) |
| { |
| DEBUGF(LCDNAME "drawline() called for horizontal line - optimisation.\n"); |
| LCDFN(hline)(x1, x2, y1); |
| 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)) |
| pfunc(current_vp->x + x, current_vp->y + y); |
| |
| if (d < 0) |
| { |
| d += dinc1; |
| x += xinc1; |
| y += yinc1; |
| } |
| else |
| { |
| d += dinc2; |
| x += xinc2; |
| y += yinc2; |
| } |
| } |
| } |
| |
| /* Draw a horizontal line (optimised) */ |
| void LCDFN(hline)(int x1, int x2, int y) |
| { |
| int x; |
| int width; |
| FBFN(data) *dst, *dst_end; |
| unsigned mask; |
| LCDFN(blockfunc_type) *bfunc; |
| |
| /* direction flip */ |
| if (x2 < x1) |
| { |
| x = x1; |
| x1 = x2; |
| x2 = x; |
| } |
| |
| /* nothing to draw? */ |
| if (((unsigned)y >= (unsigned)current_vp->height) || (x1 >= current_vp->width) |
| || (x2 < 0)) |
| return; |
| |
| /* clipping */ |
| if (x1 < 0) |
| x1 = 0; |
| if (x2 >= current_vp->width) |
| x2 = current_vp->width-1; |
| |
| width = x2 - x1 + 1; |
| |
| /* adjust x1 and y to viewport */ |
| x1 += current_vp->x; |
| y += current_vp->y; |
| |
| bfunc = LCDFN(blockfuncs)[current_vp->drawmode]; |
| dst = &LCDFN(framebuffer)[y>>3][x1]; |
| mask = 0x0101 << (y & 7); |
| |
| dst_end = dst + width; |
| do |
| bfunc(dst++, mask, 0xFFFFu); |
| while (dst < dst_end); |
| } |
| |
| /* Draw a vertical line (optimised) */ |
| void LCDFN(vline)(int x, int y1, int y2) |
| { |
| int ny; |
| FBFN(data) *dst; |
| unsigned mask, mask_bottom; |
| LCDFN(blockfunc_type) *bfunc; |
| |
| /* direction flip */ |
| if (y2 < y1) |
| { |
| ny = y1; |
| y1 = y2; |
| y2 = ny; |
| } |
| |
| /* nothing to draw? */ |
| if (((unsigned)x >= (unsigned)current_vp->width) || (y1 >= current_vp->height) |
| || (y2 < 0)) |
| return; |
| |
| /* clipping */ |
| if (y1 < 0) |
| y1 = 0; |
| if (y2 >= current_vp->height) |
| y2 = current_vp->height-1; |
| |
| /* adjust for viewport */ |
| y1 += current_vp->y; |
| y2 += current_vp->y; |
| x += current_vp->x; |
| |
| bfunc = LCDFN(blockfuncs)[current_vp->drawmode]; |
| dst = &LCDFN(framebuffer)[y1>>3][x]; |
| ny = y2 - (y1 & ~7); |
| mask = (0xFFu << (y1 & 7)) & 0xFFu; |
| mask |= mask << 8; |
| mask_bottom = 0xFFu >> (~ny & 7); |
| mask_bottom |= mask_bottom << 8; |
| |
| for (; ny >= 8; ny -= 8) |
| { |
| bfunc(dst, mask, 0xFFFFu); |
| dst += LCDM(WIDTH); |
| mask = 0xFFFFu; |
| } |
| mask &= mask_bottom; |
| bfunc(dst, mask, 0xFFFFu); |
| } |
| |
| /* Draw a rectangular box */ |
| void LCDFN(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; |
| |
| LCDFN(vline)(x, y, y2); |
| LCDFN(vline)(x2, y, y2); |
| LCDFN(hline)(x, x2, y); |
| LCDFN(hline)(x, x2, y2); |
| } |
| |
| /* Fill a rectangular area */ |
| void LCDFN(fillrect)(int x, int y, int width, int height) |
| { |
| int ny; |
| FBFN(data) *dst, *dst_end; |
| unsigned mask, mask_bottom; |
| unsigned bits = 0; |
| LCDFN(blockfunc_type) *bfunc; |
| bool fillopt = false; |
| |
| /* nothing to draw? */ |
| if ((width <= 0) || (height <= 0) || (x >= current_vp->width) |
| || (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0)) |
| return; |
| |
| /* clipping */ |
| if (x < 0) |
| { |
| width += x; |
| x = 0; |
| } |
| if (y < 0) |
| { |
| height += 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 (current_vp->drawmode & DRMODE_INVERSEVID) |
| { |
| if ((current_vp->drawmode & DRMODE_BG) && !backdrop) |
| { |
| fillopt = true; |
| bits = bg_pattern; |
| } |
| } |
| else |
| { |
| if (current_vp->drawmode & DRMODE_FG) |
| { |
| fillopt = true; |
| bits = fg_pattern; |
| } |
| } |
| bfunc = LCDFN(blockfuncs)[current_vp->drawmode]; |
| dst = &LCDFN(framebuffer)[y>>3][x]; |
| ny = height - 1 + (y & 7); |
| mask = (0xFFu << (y & 7)) & 0xFFu; |
| mask |= mask << 8; |
| mask_bottom = 0xFFu >> (~ny & 7); |
| mask_bottom |= mask_bottom << 8; |
| |
| for (; ny >= 8; ny -= 8) |
| { |
| if (fillopt && (mask == 0xFFFFu)) |
| memset16(dst, bits, width); |
| else |
| { |
| FBFN(data) *dst_row = dst; |
| |
| dst_end = dst_row + width; |
| do |
| bfunc(dst_row++, mask, 0xFFFFu); |
| while (dst_row < dst_end); |
| } |
| |
| dst += LCDM(WIDTH); |
| mask = 0xFFFFu; |
| } |
| mask &= mask_bottom; |
| |
| if (fillopt && (mask == 0xFFFFu)) |
| memset16(dst, bits, width); |
| else |
| { |
| dst_end = dst + width; |
| do |
| bfunc(dst++, mask, 0xFFFFu); |
| while (dst < dst_end); |
| } |
| } |
| |
| /* 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 similar to the internal lcd hw format. */ |
| |
| /* Draw a partial monochrome bitmap */ |
| void ICODE_ATTR LCDFN(mono_bitmap_part)(const unsigned char *src, int src_x, |
| int src_y, int stride, int x, int y, |
| int width, int height) |
| { |
| int shift, ny; |
| FBFN(data) *dst, *dst_end; |
| unsigned data, mask, mask_bottom; |
| LCDFN(blockfunc_type) *bfunc; |
| |
| /* nothing to draw? */ |
| if ((width <= 0) || (height <= 0) || (x >= current_vp->width) || |
| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0)) |
| return; |
| |
| /* 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; |
| |
| src += stride * (src_y >> 3) + src_x; /* move starting point */ |
| src_y &= 7; |
| y -= src_y; |
| dst = &LCDFN(framebuffer)[y>>3][x]; |
| shift = y & 7; |
| ny = height - 1 + shift + src_y; |
| |
| bfunc = LCDFN(blockfuncs)[current_vp->drawmode]; |
| mask = 0xFFu << (shift + src_y); |
| /* not byte-doubled here because shift+src_y can be > 7 */ |
| mask_bottom = 0xFFu >> (~ny & 7); |
| mask_bottom |= mask_bottom << 8; |
| |
| if (shift == 0) |
| { |
| mask &= 0xFFu; |
| mask |= mask << 8; |
| |
| for (; ny >= 8; ny -= 8) |
| { |
| const unsigned char *src_row = src; |
| FBFN(data) *dst_row = dst; |
| |
| dst_end = dst_row + width; |
| do |
| { |
| data = *src_row++; |
| bfunc(dst_row++, mask, data | (data << 8)); |
| } |
| while (dst_row < dst_end); |
| |
| src += stride; |
| dst += LCDM(WIDTH); |
| mask = 0xFFFFu; |
| } |
| mask &= mask_bottom; |
| |
| dst_end = dst + width; |
| do |
| { |
| data = *src++; |
| bfunc(dst++, mask, data | (data << 8)); |
| } |
| while (dst < dst_end); |
| } |
| else |
| { |
| unsigned ddata; |
| |
| dst_end = dst + width; |
| do |
| { |
| const unsigned char *src_col = src++; |
| FBFN(data) *dst_col = dst++; |
| unsigned mask_col = mask & 0xFFu; |
| |
| mask_col |= mask_col << 8; |
| data = 0; |
| |
| for (y = ny; y >= 8; y -= 8) |
| { |
| data |= *src_col << shift; |
| |
| if (mask_col) |
| { |
| ddata = data & 0xFFu; |
| bfunc(dst_col, mask_col, ddata | (ddata << 8)); |
| mask_col = 0xFFFFu; |
| } |
| else |
| { |
| mask_col = (mask >> 8) & 0xFFu; |
| mask_col |= mask_col << 8; |
| } |
| |
| src_col += stride; |
| dst_col += LCDM(WIDTH); |
| data >>= 8; |
| } |
| data |= *src_col << shift; |
| mask_col &= mask_bottom; |
| ddata = data & 0xFFu; |
| bfunc(dst_col, mask_col, ddata | (ddata << 8)); |
| } |
| while (dst < dst_end); |
| } |
| } |
| |
| /* Draw a full monochrome bitmap */ |
| void LCDFN(mono_bitmap)(const unsigned char *src, int x, int y, int width, |
| int height) |
| { |
| LCDFN(mono_bitmap_part)(src, 0, 0, width, x, y, width, height); |
| } |
| |
| /* About Rockbox' internal native bitmap format: |
| * |
| * A bitmap contains one bit in each byte of a pair of bytes for every pixel. |
| * 00 = white, 01 = light grey, 10 = dark grey, 11 = black. Bits within a byte |
| * are arranged vertically, LSB at top. |
| * The pairs of bytes are stored as shorts, in row-major order, with word 0 |
| * being top left, word 1 2nd from left etc. The first row of words defines |
| * pixel rows 0..7, the second row defines pixel row 8..15 etc. |
| * |
| * This is the same as the internal lcd hw format. */ |
| |
| /* Draw a partial native bitmap */ |
| void ICODE_ATTR LCDFN(bitmap_part)(const FBFN(data) *src, int src_x, |
| int src_y, int stride, int x, int y, |
| int width, int height) |
| { |
| int shift, ny; |
| FBFN(data) *dst, *dst_end; |
| unsigned mask, mask_bottom; |
| |
| /* nothing to draw? */ |
| if ((width <= 0) || (height <= 0) || (x >= current_vp->width) |
| || (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0)) |
| return; |
| |
| /* 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; |
| |
| src += stride * (src_y >> 3) + src_x; /* move starting point */ |
| src_y &= 7; |
| y -= src_y; |
| dst = &LCDFN(framebuffer)[y>>3][x]; |
| shift = y & 7; |
| ny = height - 1 + shift + src_y; |
| |
| mask = 0xFFu << (shift + src_y); |
| /* not byte-doubled here because shift+src_y can be > 7 */ |
| mask_bottom = 0xFFu >> (~ny & 7); |
| mask_bottom |= mask_bottom << 8; |
| |
| if (shift == 0) |
| { |
| mask &= 0xFFu; |
| mask |= mask << 8; |
| |
| for (; ny >= 8; ny -= 8) |
| { |
| if (mask == 0xFFFFu) |
| memcpy(dst, src, width * sizeof(FBFN(data))); |
| else |
| { |
| const FBFN(data) *src_row = src; |
| FBFN(data) *dst_row = dst; |
| |
| dst_end = dst_row + width; |
| do |
| setblock(dst_row++, mask, *src_row++); |
| while (dst_row < dst_end); |
| } |
| src += stride; |
| dst += LCDM(WIDTH); |
| mask = 0xFFFFu; |
| } |
| mask &= mask_bottom; |
| |
| if (mask == 0xFFFFu) |
| memcpy(dst, src, width * sizeof(FBFN(data))); |
| else |
| { |
| dst_end = dst + width; |
| do |
| setblock(dst++, mask, *src++); |
| while (dst < dst_end); |
| } |
| } |
| else |
| { |
| unsigned datamask = (0xFFu << shift) & 0xFFu; |
| |
| datamask |= datamask << 8; |
| |
| dst_end = dst + width; |
| do |
| { |
| const FBFN(data) *src_col = src++; |
| FBFN(data) *dst_col = dst++; |
| unsigned mask_col = mask & 0xFFu; |
| unsigned data, olddata = 0; |
| |
| mask_col |= mask_col << 8; |
| |
| for (y = ny; y >= 8; y -= 8) |
| { |
| data = *src_col << shift; |
| |
| if (mask_col) |
| { |
| setblock(dst_col, mask_col, |
| olddata ^((olddata ^ data) & datamask)); |
| mask_col = 0xFFFFu; |
| } |
| else |
| { |
| mask_col = (mask >> 8) & 0xFFu; |
| mask_col |= mask_col << 8; |
| } |
| src_col += stride; |
| dst_col += LCDM(WIDTH); |
| olddata = data >> 8; |
| } |
| data = *src_col << shift; |
| setblock(dst_col, mask_col & mask_bottom, |
| olddata ^((olddata ^ data) & datamask)); |
| } |
| while (dst < dst_end); |
| } |
| } |
| |
| /* Draw a full native bitmap */ |
| void LCDFN(bitmap)(const FBFN(data) *src, int x, int y, int width, int height) |
| { |
| LCDFN(bitmap_part)(src, 0, 0, width, x, y, width, height); |
| } |
| |
| /* put a string at a given pixel position, skipping first ofs pixel columns */ |
| static void LCDFN(putsxyofs)(int x, int y, int ofs, const unsigned char *str) |
| { |
| unsigned short ch; |
| unsigned short *ucs; |
| struct font* pf = font_get(current_vp->font); |
| |
| ucs = bidi_l2v(str, 1); |
| |
| while ((ch = *ucs++) != 0 && x < current_vp->width) |
| { |
| int width; |
| const unsigned char *bits; |
| |
| /* get proportional width and glyph bits */ |
| width = font_get_width(pf, ch); |
| |
| if (ofs > width) |
| { |
| ofs -= width; |
| continue; |
| } |
| |
| bits = font_get_bits(pf, ch); |
| |
| LCDFN(mono_bitmap_part)(bits, ofs, 0, width, x, y, width - ofs, |
| pf->height); |
| |
| x += width - ofs; |
| ofs = 0; |
| } |
| } |
| |
| /* put a string at a given pixel position */ |
| void LCDFN(putsxy)(int x, int y, const unsigned char *str) |
| { |
| LCDFN(putsxyofs)(x, y, 0, str); |
| } |
| |
| /*** line oriented text output ***/ |
| |
| /* put a string at a given char position */ |
| void LCDFN(puts)(int x, int y, const unsigned char *str) |
| { |
| LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, 0); |
| } |
| |
| void LCDFN(puts_style)(int x, int y, const unsigned char *str, int style) |
| { |
| LCDFN(puts_style_offset)(x, y, str, style, 0); |
| } |
| |
| void LCDFN(puts_offset)(int x, int y, const unsigned char *str, int offset) |
| { |
| LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, offset); |
| } |
| |
| /* put a string at a given char position, style, and pixel position, |
| * skipping first offset pixel columns */ |
| void LCDFN(puts_style_offset)(int x, int y, const unsigned char *str, |
| int style, int offset) |
| { |
| int xpos,ypos,w,h,xrect; |
| int lastmode = current_vp->drawmode; |
| |
| /* make sure scrolling is turned off on the line we are updating */ |
| LCDFN(scroll_stop_line)(current_vp, y); |
| |
| if(!str || !str[0]) |
| return; |
| |
| LCDFN(getstringsize)(str, &w, &h); |
| xpos = x*w / utf8length((char *)str); |
| ypos = y*h; |
| current_vp->drawmode = (style & STYLE_INVERT) ? |
| (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID; |
| LCDFN(putsxyofs)(xpos, ypos, offset, str); |
| current_vp->drawmode ^= DRMODE_INVERSEVID; |
| xrect = xpos + MAX(w - offset, 0); |
| LCDFN(fillrect)(xrect, ypos, current_vp->width - xrect, h); |
| current_vp->drawmode = lastmode; |
| } |
| |
| /*** scrolling ***/ |
| void LCDFN(puts_scroll)(int x, int y, const unsigned char *string) |
| { |
| LCDFN(puts_scroll_style)(x, y, string, STYLE_DEFAULT); |
| } |
| |
| void LCDFN(puts_scroll_style)(int x, int y, const unsigned char *string, int style) |
| { |
| LCDFN(puts_scroll_style_offset)(x, y, string, style, 0); |
| } |
| |
| void LCDFN(puts_scroll_offset)(int x, int y, const unsigned char *string, int offset) |
| { |
| LCDFN(puts_scroll_style_offset)(x, y, string, STYLE_DEFAULT, offset); |
| } |
| |
| void LCDFN(puts_scroll_style_offset)(int x, int y, const unsigned char *string, |
| int style, int offset) |
| { |
| struct scrollinfo* s; |
| int w, h; |
| |
| if ((unsigned)y >= (unsigned)current_vp->height) |
| return; |
| |
| /* remove any previously scrolling line at the same location */ |
| LCDFN(scroll_stop_line)(current_vp, y); |
| |
| if (LCDFN(scroll_info).lines >= LCDM(SCROLLABLE_LINES)) return; |
| |
| s = &LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines]; |
| |
| s->start_tick = current_tick + LCDFN(scroll_info).delay; |
| s->style = style; |
| if (style & STYLE_INVERT) { |
| LCDFN(puts_style_offset)(x,y,string,STYLE_INVERT,offset); |
| } |
| else |
| LCDFN(puts_offset)(x,y,string,offset); |
| |
| LCDFN(getstringsize)(string, &w, &h); |
| |
| if (current_vp->width - x * 8 < w) { |
| /* prepare scroll line */ |
| char *end; |
| |
| memset(s->line, 0, sizeof s->line); |
| strcpy(s->line, string); |
| |
| /* get width */ |
| s->width = LCDFN(getstringsize)(s->line, &w, &h); |
| |
| /* scroll bidirectional or forward only depending on the string |
| width */ |
| if ( LCDFN(scroll_info).bidir_limit ) { |
| s->bidir = s->width < (current_vp->width) * |
| (100 + LCDFN(scroll_info).bidir_limit) / 100; |
| } |
| else |
| s->bidir = false; |
| |
| if (!s->bidir) { /* add spaces if scrolling in the round */ |
| strcat(s->line, " "); |
| /* get new width incl. spaces */ |
| s->width = LCDFN(getstringsize)(s->line, &w, &h); |
| } |
| |
| end = strchr(s->line, '\0'); |
| strncpy(end, (char *)string, current_vp->width/2); |
| |
| s->vp = current_vp; |
| s->y = y; |
| s->len = utf8length((char *)string); |
| s->offset = offset; |
| s->startx = x * s->width / s->len; |
| s->backward = false; |
| |
| LCDFN(scroll_info).lines++; |
| } |
| } |
| |
| void LCDFN(scroll_fn)(void) |
| { |
| struct font* pf; |
| struct scrollinfo* s; |
| int index; |
| int xpos, ypos; |
| int lastmode; |
| struct viewport* old_vp = current_vp; |
| |
| for ( index = 0; index < LCDFN(scroll_info).lines; index++ ) { |
| s = &LCDFN(scroll_info).scroll[index]; |
| |
| /* check pause */ |
| if (TIME_BEFORE(current_tick, s->start_tick)) |
| continue; |
| |
| LCDFN(set_viewport)(s->vp); |
| |
| if (s->backward) |
| s->offset -= LCDFN(scroll_info).step; |
| else |
| s->offset += LCDFN(scroll_info).step; |
| |
| pf = font_get(current_vp->font); |
| xpos = s->startx; |
| ypos = s->y * pf->height; |
| |
| if (s->bidir) { /* scroll bidirectional */ |
| if (s->offset <= 0) { |
| /* at beginning of line */ |
| s->offset = 0; |
| s->backward = false; |
| s->start_tick = current_tick + LCDFN(scroll_info).delay * 2; |
| } |
| if (s->offset >= s->width - (current_vp->width - xpos)) { |
| /* at end of line */ |
| s->offset = s->width - (current_vp->width - xpos); |
| s->backward = true; |
| s->start_tick = current_tick + LCDFN(scroll_info).delay * 2; |
| } |
| } |
| else { |
| /* scroll forward the whole time */ |
| if (s->offset >= s->width) |
| s->offset %= s->width; |
| } |
| |
| lastmode = current_vp->drawmode; |
| current_vp->drawmode = (s->style&STYLE_INVERT) ? |
| (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID; |
| LCDFN(putsxyofs)(xpos, ypos, s->offset, s->line); |
| current_vp->drawmode = lastmode; |
| LCDFN(update_viewport_rect)(xpos, ypos, |
| current_vp->width - xpos, pf->height); |
| } |
| |
| LCDFN(set_viewport)(old_vp); |
| } |