tsiry-sandratraina.com
A modern Music Player Daemon based on Rockbox open source high quality audio player
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) 2006 Fredrik Ohrn
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include "pacbox.h"
23
24 .section .text
25 .align 2
26
27
28#ifdef IRIVER_H300_SERIES
29
30 .global blit_display
31
32/*
33
34 0.75 scaling - display 3 out of 4 pixels = 216x168
35 Skipping pixel #2 out of 4 seems to give the most legible display
36
37void blit_display(fb_data* lcd_framebuffer, unsigned char* vbuf)
38{
39 next_dst=&lcd_framebuffer[YOFS*LCD_WIDTH+XOFS+((ScreenHeight*3)/4)-1];
40 for (y=ScreenHeight-1;y >= 0; y--) {
41 if ((y & 3) != 1) {
42 dst = (next_dst--);
43 for (x=0;x<ScreenWidth;x++) {
44 if ((x & 3) == 1) { vbuf++; }
45 else {
46 *dst = palette[*(vbuf++)];
47 dst+=LCD_WIDTH;
48 }
49 }
50 } else {
51 vbuf+=ScreenWidth;
52 }
53 }
54}
55*/
56
57/* FIXME: ScreenWidth & ScreenHeight are defined in arcade.h, but all
58 hell breaks loose if you include it... */
59
60#define ScreenWidth 224
61#define ScreenHeight 288
62
63#define SHRUNK_WIDTH ((ScreenWidth/4)*3)
64#define SHRUNK_HEIGHT ((ScreenHeight/4)*3)
65
66#define BD_SAVE (9 * 4)
67
68process_4_pixels:
69 move.b %d4, %d2
70 move.w (%a1, %d2.l * 2), %d3
71 move.w %d3, (2 * LCD_WIDTH * 2)(%a0)
72
73 lsr.l #8, %d4
74 move.b %d4, %d2
75 move.w (%a1, %d2.l * 2), %d3
76 move.w %d3, (1 * LCD_WIDTH * 2)(%a0)
77
78 swap.w %d4
79 move.b %d4, %d2
80 move.w (%a1, %d2.l * 2), (%a0)
81
82 lea.l 3 * LCD_WIDTH * 2(%a0), %a0
83 rts
84
85process_line:
86 move.l %a3, %d1
87bd_x_loop:
88 movem.l (%a2), %d4-%d7 // Read 16 pixels
89
90 bsr.s process_4_pixels
91 move.l %d5, %d4
92 bsr.s process_4_pixels
93 move.l %d6, %d4
94 bsr.s process_4_pixels
95 move.l %d7, %d4
96 bsr.s process_4_pixels
97
98 lea 16(%a2), %a2
99 subq.l #1, %d1;
100 bne.s bd_x_loop
101
102 rts
103
104blit_display:
105 lea -BD_SAVE(%sp), %sp
106 movem.l %d2-%d7/%a2-%a4, (%sp)
107
108 move.l BD_SAVE + 4(%sp), %a0 // lcd_framebuffer
109 move.l BD_SAVE + 8(%sp), %a2 // vbuf
110
111 lea palette, %a1
112
113 lea.l ((YOFS * LCD_WIDTH + XOFS + SHRUNK_HEIGHT) * 2)(%a0), %a0
114
115 move.l #(ScreenHeight / 4), %d0
116 move.l #(ScreenWidth / 16), %a3
117 move.l #(LCD_WIDTH * SHRUNK_WIDTH + 1) * 2, %a4
118 moveq.l #0, %d2
119
120bd_y_loop:
121 bsr.s process_line
122
123 suba.l %a4, %a0
124 lea.l ScreenWidth(%a2), %a2 // Skip 1 line
125
126 bsr.s process_line
127
128 suba.l %a4, %a0
129
130 bsr.s process_line
131
132 suba.l %a4, %a0
133
134 subq.l #1, %d0
135 bne bd_y_loop
136
137 movem.l (%sp), %d2-%d7/%a2-%a4
138 lea.l BD_SAVE(%sp), %sp
139 rts
140
141#endif /* IRIVER_H300_SERIES */
142
143
144/* See arcade.c for the C implementation of drawChar */
145/* Note! This version does not handle flipped screen mode. */
146
147 .global drawChar
148
149#define DC_SAVE (4 * 4)
150
151drawChar:
152 lea -DC_SAVE(%sp), %sp
153 movem.l %d2-%d5, (%sp)
154
155 movea.l DC_SAVE + 4(%sp), %a0 // buffer
156
157 move.l DC_SAVE + 16(%sp), %d0 // oy
158 move.l %d0, %d1
159 lsl.l #8, %d0
160 lsl.l #5, %d1
161 sub.l %d1, %d0
162 adda.l %d0, %a0
163 adda.l DC_SAVE + 12(%sp), %a0 // ox
164
165 move.l DC_SAVE + 20(%sp), %d0 // color
166 and.l #0x3F, %d0
167 bne.s have_color
168
169 moveq.l #8, %d1
170 moveq.l #0, %d2
171 moveq.l #0, %d3
172
173clear_loop:
174 movem.l %d2-%d3, (%a0)
175 lea 224(%a0), %a0
176
177 subq.l #1, %d1
178 bne.s clear_loop
179
180 bra.s dc_exit
181
182have_color:
183 lsl.l #2, %d0
184
185 lea.l charmap_, %a1
186 move.l DC_SAVE + 8(%sp), %d2 // index
187 lsl.l #6, %d2
188 adda.l %d2, %a1
189
190 moveq.l #8, %d1
191 moveq.l #0, %d3
192 moveq.l #24, %d5
193
194dc_y_loop:
195 move.l (%a1)+, %d3
196 move.l %d3, %d4
197
198 move.l %d3, %d2 // Pixel 1
199 lsr.l %d5, %d2
200 add.l %d0, %d2
201 lsl.l #8, %d2
202
203 swap.w %d4 // Pixel 2
204 move.b %d4, %d2
205 add.l %d0, %d2
206 lsl.l #8, %d2
207
208 lsr.l #8, %d3 // Pixel 3
209 move.b %d3, %d2
210 add.l %d0, %d2
211 lsl.l #8, %d2
212
213 swap.w %d4 // Pixel 4
214 move.b %d4, %d2
215 add.l %d0, %d2
216
217 move.l %d2, (%a0)+
218
219 move.l (%a1)+, %d3
220 move.l %d3, %d4
221
222 move.l %d3, %d2 // Pixel 1
223 lsr.l %d5, %d2
224 add.l %d0, %d2
225 lsl.l #8, %d2
226
227 swap.w %d4 // Pixel 2
228 move.b %d4, %d2
229 add.l %d0, %d2
230 lsl.l #8, %d2
231
232 lsr.l #8, %d3 // Pixel 3
233 move.b %d3, %d2
234 add.l %d0, %d2
235 lsl.l #8, %d2
236
237 swap.w %d4 // Pixel 4
238 move.b %d4, %d2
239 add.l %d0, %d2
240
241 move.l %d2, (%a0)+
242
243 lea 216(%a0), %a0
244
245 subq.l #1, %d1
246 bne.s dc_y_loop
247
248dc_exit:
249 movem.l (%sp), %d2-%d5
250 lea.l DC_SAVE(%sp), %sp
251 rts
252