forked from len0rd/rockbox
0cb6803227
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22621 a1c6a512-1295-4272-9138-f99709370657
351 lines
8.6 KiB
C
351 lines
8.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Michael Sevakis
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*
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* LCD scrolling driver and scheduler
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*
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* Much collected and combined from the various Rockbox LCD drivers.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "cpu.h"
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#include "kernel.h"
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#include "thread.h"
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#include "usb.h"
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#include "lcd.h"
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#include "font.h"
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#ifdef HAVE_REMOTE_LCD
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#include "lcd-remote.h"
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#endif
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#include "scroll_engine.h"
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static const char scroll_tick_table[16] = {
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/* Hz values:
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1, 1.25, 1.55, 2, 2.5, 3.12, 4, 5, 6.25, 8.33, 10, 12.5, 16.7, 20, 25, 33 */
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100, 80, 64, 50, 40, 32, 25, 20, 16, 12, 10, 8, 6, 5, 4, 3
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};
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static void scroll_thread(void);
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static char scroll_stack[DEFAULT_STACK_SIZE*3];
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static const char scroll_name[] = "scroll";
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static struct scrollinfo lcd_scroll[LCD_SCROLLABLE_LINES];
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#ifdef HAVE_REMOTE_LCD
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struct scrollinfo lcd_remote_scroll[LCD_REMOTE_SCROLLABLE_LINES];
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struct event_queue scroll_queue;
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#endif
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struct scroll_screen_info lcd_scroll_info =
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{
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.scroll = lcd_scroll,
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.lines = 0,
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.ticks = 12,
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.delay = HZ/2,
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.bidir_limit = 50,
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#ifdef HAVE_LCD_BITMAP
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.step = 6,
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#endif
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#ifdef HAVE_LCD_CHARCELLS
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.jump_scroll_delay = HZ/4,
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.jump_scroll = 0,
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#endif
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};
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#ifdef HAVE_REMOTE_LCD
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struct scroll_screen_info lcd_remote_scroll_info =
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{
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.scroll = lcd_remote_scroll,
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.lines = 0,
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.ticks = 12,
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.delay = HZ/2,
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.bidir_limit = 50,
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.step = 6,
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};
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#endif /* HAVE_REMOTE_LCD */
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void lcd_stop_scroll(void)
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{
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lcd_scroll_info.lines = 0;
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}
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/* Stop scrolling line y in the specified viewport, or all lines if y < 0 */
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void lcd_scroll_stop_line(const struct viewport* current_vp, int y)
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{
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int i = 0;
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while (i < lcd_scroll_info.lines)
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{
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if ((lcd_scroll_info.scroll[i].vp == current_vp) &&
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((y < 0) || (lcd_scroll_info.scroll[i].y == y)))
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{
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/* If i is not the last active line in the array, then move
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the last item to position i */
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if ((i + 1) != lcd_scroll_info.lines)
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{
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lcd_scroll_info.scroll[i] =
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lcd_scroll_info.scroll[lcd_scroll_info.lines-1];
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}
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lcd_scroll_info.lines--;
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/* A line can only appear once, so we're done,
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* unless we are clearing the whole viewport */
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if (y >= 0)
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return ;
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}
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else
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{
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i++;
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}
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}
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}
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/* Stop all scrolling lines in the specified viewport */
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void lcd_scroll_stop(const struct viewport* vp)
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{
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lcd_scroll_stop_line(vp, -1);
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}
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void lcd_scroll_speed(int speed)
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{
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lcd_scroll_info.ticks = scroll_tick_table[speed];
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}
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#if defined(HAVE_LCD_BITMAP)
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void lcd_scroll_step(int step)
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{
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lcd_scroll_info.step = step;
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}
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#endif
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void lcd_scroll_delay(int ms)
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{
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lcd_scroll_info.delay = ms / (HZ / 10);
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}
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void lcd_bidir_scroll(int percent)
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{
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lcd_scroll_info.bidir_limit = percent;
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}
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#ifdef HAVE_LCD_CHARCELLS
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void lcd_jump_scroll(int mode) /* 0=off, 1=once, ..., JUMP_SCROLL_ALWAYS */
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{
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lcd_scroll_info.jump_scroll = mode;
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}
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void lcd_jump_scroll_delay(int ms)
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{
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lcd_scroll_info.jump_scroll_delay = ms / (HZ / 10);
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}
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#endif
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#ifdef HAVE_REMOTE_LCD
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void lcd_remote_stop_scroll(void)
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{
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lcd_remote_scroll_info.lines = 0;
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}
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/* Stop scrolling line y in the specified viewport, or all lines if y < 0 */
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void lcd_remote_scroll_stop_line(const struct viewport* current_vp, int y)
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{
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int i = 0;
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while (i < lcd_remote_scroll_info.lines)
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{
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if ((lcd_remote_scroll_info.scroll[i].vp == current_vp) &&
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((y < 0) || (lcd_remote_scroll_info.scroll[i].y == y)))
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{
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/* If i is not the last active line in the array, then move
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the last item to position i */
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if ((i + 1) != lcd_remote_scroll_info.lines)
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{
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lcd_remote_scroll_info.scroll[i] =
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lcd_remote_scroll_info.scroll[lcd_remote_scroll_info.lines-1];
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}
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lcd_remote_scroll_info.lines--;
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/* A line can only appear once, so we're done,
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* unless we are clearing the whole viewport */
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if (y >= 0)
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return ;
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}
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else
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{
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i++;
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}
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}
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}
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/* Stop all scrolling lines in the specified viewport */
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void lcd_remote_scroll_stop(const struct viewport* vp)
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{
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lcd_remote_scroll_stop_line(vp, -1);
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}
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void lcd_remote_scroll_speed(int speed)
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{
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lcd_remote_scroll_info.ticks = scroll_tick_table[speed];
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}
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void lcd_remote_scroll_step(int step)
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{
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lcd_remote_scroll_info.step = step;
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}
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void lcd_remote_scroll_delay(int ms)
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{
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lcd_remote_scroll_info.delay = ms / (HZ / 10);
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}
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void lcd_remote_bidir_scroll(int percent)
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{
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lcd_remote_scroll_info.bidir_limit = percent;
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}
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static void sync_display_ticks(void)
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{
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lcd_scroll_info.last_scroll =
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lcd_remote_scroll_info.last_scroll = current_tick;
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}
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static bool scroll_process_message(int delay)
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{
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struct queue_event ev;
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do
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{
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long tick = current_tick;
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queue_wait_w_tmo(&scroll_queue, &ev, delay);
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switch (ev.id)
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{
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case SYS_TIMEOUT:
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return false;
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case SYS_USB_CONNECTED:
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usb_acknowledge(SYS_USB_CONNECTED_ACK);
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usb_wait_for_disconnect(&scroll_queue);
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sync_display_ticks();
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return true;
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#ifndef SIMULATOR
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case SYS_REMOTE_PLUGGED:
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if (!remote_initialized)
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sync_display_ticks();
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#endif
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}
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delay -= current_tick - tick;
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}
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while (delay > 0);
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return false;
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}
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#endif /* HAVE_REMOTE_LCD */
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static void scroll_thread(void) __attribute__((noreturn));
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#ifdef HAVE_REMOTE_LCD
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static void scroll_thread(void)
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{
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enum
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{
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SCROLL_LCD = 0x1,
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SCROLL_LCD_REMOTE = 0x2,
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};
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sync_display_ticks();
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while ( 1 )
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{
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long delay;
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int scroll;
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long tick_lcd, tick_remote;
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tick_lcd = lcd_scroll_info.last_scroll + lcd_scroll_info.ticks;
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delay = current_tick;
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if (
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#ifndef SIMULATOR
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!remote_initialized ||
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#endif
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(tick_remote = lcd_remote_scroll_info.last_scroll +
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lcd_remote_scroll_info.ticks,
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TIME_BEFORE(tick_lcd, tick_remote)))
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{
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scroll = SCROLL_LCD;
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delay = tick_lcd - delay;
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}
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/* TIME_BEFORE(tick_remote, tick_lcd) */
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else if (tick_lcd != tick_remote)
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{
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scroll = SCROLL_LCD_REMOTE;
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delay = tick_remote - delay;
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}
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else
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{
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scroll = SCROLL_LCD | SCROLL_LCD_REMOTE;
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delay = tick_lcd - delay;
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}
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if (scroll_process_message(delay))
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continue;
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if (scroll & SCROLL_LCD)
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{
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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if (lcd_active())
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#endif
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lcd_scroll_fn();
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lcd_scroll_info.last_scroll = current_tick;
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}
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if (scroll == (SCROLL_LCD | SCROLL_LCD_REMOTE))
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yield();
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if (scroll & SCROLL_LCD_REMOTE)
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{
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lcd_remote_scroll_fn();
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lcd_remote_scroll_info.last_scroll = current_tick;
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}
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}
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}
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#else
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static void scroll_thread(void)
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{
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while (1)
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{
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sleep(lcd_scroll_info.ticks);
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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if (lcd_active())
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#endif
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lcd_scroll_fn();
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}
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}
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#endif /* HAVE_REMOTE_LCD */
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void scroll_init(void)
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{
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#ifdef HAVE_REMOTE_LCD
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queue_init(&scroll_queue, true);
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#endif
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create_thread(scroll_thread, scroll_stack,
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sizeof(scroll_stack), 0, scroll_name
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IF_PRIO(, PRIORITY_USER_INTERFACE)
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IF_COP(, CPU));
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}
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