A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2007 Michael Sevakis
11 *
12 * LCD scrolling driver and scheduler
13 *
14 * Much collected and combined from the various Rockbox LCD drivers.
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version 2
19 * of the License, or (at your option) any later version.
20 *
21 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
22 * KIND, either express or implied.
23 *
24 ****************************************************************************/
25#ifndef __SCROLL_ENGINE_H__
26#define __SCROLL_ENGINE_H__
27
28#include <stdbool.h>
29#include "config.h"
30#include "file.h"
31
32struct viewport;
33struct scrollinfo;
34
35extern void scroll_init(void) INIT_ATTR;
36
37extern void lcd_bidir_scroll(int threshold);
38extern void lcd_scroll_speed(int speed);
39extern void lcd_scroll_delay(int ms);
40
41#ifdef HAVE_REMOTE_LCD
42extern void lcd_remote_scroll_speed(int speed);
43extern void lcd_remote_scroll_delay(int ms);
44#endif
45
46#ifdef BOOTLOADER
47static inline void lcd_scroll_stop(void)
48{
49}
50
51static inline void lcd_scroll_stop_viewport(const struct viewport *vp)
52{
53 (void)vp;
54}
55
56static inline void lcd_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height)
57{
58 (void)vp;
59 (void)x;
60 (void)y;
61 (void)width;
62 (void)height;
63}
64
65static inline bool lcd_scroll_now(struct scrollinfo *scroll)
66{
67 (void)scroll;
68 return false;
69}
70
71#ifdef HAVE_REMOTE_LCD
72static inline void lcd_remote_scroll_stop(void)
73{
74}
75
76static inline void lcd_remote_scroll_stop_viewport(const struct viewport *vp)
77{
78 (void)vp;
79}
80
81static inline void lcd_remote_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height)
82{
83 (void)vp;
84 (void)x;
85 (void)y;
86 (void)width;
87 (void)height;
88}
89
90static inline bool lcd_remote_scroll_now(struct scrollinfo *scroll)
91{
92 (void)scroll;
93 return false;
94}
95#endif /* HAVE_REMOTE_LCD */
96#else
97extern void lcd_scroll_stop(void);
98extern void lcd_scroll_stop_viewport(const struct viewport *vp);
99extern void lcd_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height);
100extern bool lcd_scroll_now(struct scrollinfo *scroll);
101
102#ifdef HAVE_REMOTE_LCD
103extern void lcd_remote_scroll_stop(void);
104extern void lcd_remote_scroll_stop_viewport(const struct viewport *vp);
105extern void lcd_remote_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height);
106extern bool lcd_remote_scroll_now(struct scrollinfo *scroll);
107#endif /* HAVE_REMOTE_LCD */
108#endif /* BOOTLOADER */
109
110
111/* internal usage, but in multiple drivers
112 * larger than the normal linebuffer since it holds the line a second
113 * time (+3 spaces) for non-bidir scrolling */
114#define SCROLL_SPACING 3
115#define SCROLL_LINE_SIZE (MAX_PATH + SCROLL_SPACING + 3*LCD_WIDTH/2 + 2)
116
117struct scrollinfo
118{
119 struct viewport* vp;
120 char linebuffer[(SCROLL_LINE_SIZE / 2) - SCROLL_SPACING];
121 const char *line;
122 /* rectangle for the line */
123 int x, y; /* relative to the viewort */
124 int width, height;
125 /* pixel to skip from the beginning of the string, increments as the text scrolls */
126 int offset;
127 /* getstringsize width of linebuffer */
128 unsigned short line_stringsize;
129 /* scroll presently forward or backward? */
130 bool backward;
131 bool bidir;
132 long start_tick;
133
134 /* support for custom scrolling functions,
135 * must be called with ::line == NULL to indicate that the line
136 * stops scrolling or when the userdata pointer is going to be changed
137 * (the custom scroller can release the userdata then) */
138 void (*scroll_func)(struct scrollinfo *s);
139 void *userdata;
140};
141
142struct scroll_screen_info
143{
144 struct scrollinfo * const scroll;
145 const int num_scroll; /* number of scrollable lines (also number of scroll structs) */
146 int lines; /* Number of currently scrolling lines */
147 long ticks; /* # of ticks between updates*/
148 long delay; /* ticks delay before start */
149 int bidir_limit; /* percent */
150 int step; /* pixels per scroll step */
151#if defined(HAVE_REMOTE_LCD)
152 long last_scroll;
153#endif
154};
155
156/** main lcd **/
157#define LCD_SCROLLABLE_LINES ((LCD_HEIGHT+4)/5 < 32 ? (LCD_HEIGHT+4)/5 : 32)
158
159extern struct scroll_screen_info lcd_scroll_info;
160
161/** remote lcd **/
162#ifdef HAVE_REMOTE_LCD
163#define LCD_REMOTE_SCROLLABLE_LINES \
164 (((LCD_REMOTE_HEIGHT+4)/5 < 32) ? (LCD_REMOTE_HEIGHT+4)/5 : 32)
165extern struct scroll_screen_info lcd_remote_scroll_info;
166#endif
167
168#endif /* __SCROLL_ENGINE_H__ */