From 67481f5fd672bac50ae8fa8eb05b6b13ebe25035 Mon Sep 17 00:00:00 2001 From: Jens Arnold Date: Sun, 9 Mar 2008 23:52:59 +0000 Subject: First step towards the iAudio M3 port: Make the 2bit vertically interleaved LCD driver code usable for main or remote. The M3 remote will be treated as the main LCD. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16598 a1c6a512-1295-4272-9138-f99709370657 --- firmware/drivers/lcd-2bit-vi.c | 1243 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1243 insertions(+) create mode 100644 firmware/drivers/lcd-2bit-vi.c (limited to 'firmware/drivers/lcd-2bit-vi.c') diff --git a/firmware/drivers/lcd-2bit-vi.c b/firmware/drivers/lcd-2bit-vi.c new file mode 100644 index 0000000000..d0ef79bcd8 --- /dev/null +++ b/firmware/drivers/lcd-2bit-vi.c @@ -0,0 +1,1243 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2006 Jens Arnold + * + * Rockbox driver for 2bit vertically interleaved LCDs + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * 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 +#include +#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 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, + .xmargin = 0, + .ymargin = 0, + .fg_pattern = LCDM(DEFAULT_FG), + .bg_pattern = LCDM(DEFAULT_BG) +}; + +static struct viewport IDATA_ATTR *current_vp = &default_vp; + +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(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(setmargins)(int x, int y) +{ + current_vp->xmargin = x; + current_vp->ymargin = y; +} + +int LCDFN(getxmargin)(void) +{ + return current_vp->xmargin; +} + +int LCDFN(getymargin)(void) +{ + return current_vp->ymargin; +} + +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); + deltay = abs(y2 - y1); + 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 = current_vp->xmargin + x*w / utf8length((char *)str); + ypos = current_vp->ymargin + 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 - current_vp->xmargin < 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 - current_vp->xmargin) * + (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 = current_vp->xmargin + 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 = current_vp->ymargin + 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); +} -- cgit v1.2.3