diff options
Diffstat (limited to 'apps/plugins/lib/gray_drawbitmap.c')
-rw-r--r-- | apps/plugins/lib/gray_drawbitmap.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/apps/plugins/lib/gray_drawbitmap.c b/apps/plugins/lib/gray_drawbitmap.c deleted file mode 100644 index 376f76d45e..0000000000 --- a/apps/plugins/lib/gray_drawbitmap.c +++ /dev/null | |||
@@ -1,116 +0,0 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Grayscale framework | ||
11 | * gray_drawbitmap() function | ||
12 | * | ||
13 | * This is a generic framework to use grayscale display within Rockbox | ||
14 | * plugins. It obviously does not work for the player. | ||
15 | * | ||
16 | * Copyright (C) 2004 Jens Arnold | ||
17 | * | ||
18 | * All files in this archive are subject to the GNU General Public License. | ||
19 | * See the file COPYING in the source tree root for full license agreement. | ||
20 | * | ||
21 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
22 | * KIND, either express or implied. | ||
23 | * | ||
24 | ****************************************************************************/ | ||
25 | |||
26 | #ifndef SIMULATOR /* not for simulator by now */ | ||
27 | #include "plugin.h" | ||
28 | |||
29 | #ifdef HAVE_LCD_BITMAP /* and also not for the Player */ | ||
30 | #include "gray.h" | ||
31 | |||
32 | /*--------------------------------------------------------------------------- | ||
33 | Display a bitmap with the current drawinfo | ||
34 | ---------------------------------------------------------------------------- | ||
35 | The drawmode is used as described for gray_set_drawmode() | ||
36 | |||
37 | This (now) uses the same bitmap format as the core b&w graphics routines, | ||
38 | so you can use bmp2rb to generate bitmaps for use with this function as | ||
39 | well. | ||
40 | |||
41 | A bitmap contains one bit for every pixel that defines if that pixel is | ||
42 | foreground (1) or background (0). Bits within a byte are arranged | ||
43 | vertically, LSB at top. | ||
44 | The bytes are stored in row-major order, with byte 0 being top left, | ||
45 | byte 1 2nd from left etc. The first row of bytes defines pixel rows | ||
46 | 0..7, the second row defines pixel row 8..15 etc. | ||
47 | |||
48 | The <stride> parameter is useful if you want to show only a part of a | ||
49 | bitmap. It should always be set to the "row length" of the bitmap. | ||
50 | */ | ||
51 | void gray_drawbitmap(const unsigned char *src, int x, int y, int nx, int ny, | ||
52 | int stride) | ||
53 | { | ||
54 | int shift; | ||
55 | unsigned bits, mask_top, mask_bottom; | ||
56 | const unsigned char *src_col; | ||
57 | unsigned char *dst, *dst_col; | ||
58 | void (*blockfunc)(unsigned char *address, unsigned mask, unsigned bits); | ||
59 | |||
60 | if ((unsigned) x >= (unsigned) _graybuf->width | ||
61 | || (unsigned) y >= (unsigned) _graybuf->height) | ||
62 | return; | ||
63 | |||
64 | if ((unsigned) (y + ny) >= (unsigned) _graybuf->height) /* clip bottom */ | ||
65 | ny = _graybuf->height - y; | ||
66 | |||
67 | if ((unsigned) (x + nx) >= (unsigned) _graybuf->width) /* clip right */ | ||
68 | nx = _graybuf->width - x; | ||
69 | |||
70 | dst = _graybuf->data + x + MULU16(_graybuf->width, y >> 3); | ||
71 | shift = y & 7; | ||
72 | ny += shift; | ||
73 | |||
74 | mask_top = 0xFFu << (y & 7); | ||
75 | mask_bottom = ~(0xFEu << ((ny - 1) & 7)); | ||
76 | if (ny <= 8) | ||
77 | mask_bottom &= mask_top; | ||
78 | |||
79 | blockfunc = _gray_blockfuncs[_graybuf->drawmode]; | ||
80 | |||
81 | for(x = 0; x < nx; x++) | ||
82 | { | ||
83 | src_col = src++; | ||
84 | dst_col = dst++; | ||
85 | bits = 0; | ||
86 | y = 0; | ||
87 | |||
88 | if (ny > 8) | ||
89 | { | ||
90 | bits = *src_col << shift; | ||
91 | src_col += stride; | ||
92 | |||
93 | blockfunc(dst_col, mask_top, bits); | ||
94 | dst_col += _graybuf->width; | ||
95 | bits >>= 8; | ||
96 | |||
97 | for (y = 8; y < ny - 8; y += 8) | ||
98 | { | ||
99 | bits |= *src_col << shift; | ||
100 | src_col += stride; | ||
101 | |||
102 | blockfunc(dst_col, 0xFFu, bits); | ||
103 | dst_col += _graybuf->width; | ||
104 | bits >>= 8; | ||
105 | } | ||
106 | } | ||
107 | if (y + shift < ny) | ||
108 | bits |= *src_col << shift; | ||
109 | |||
110 | blockfunc(dst_col, mask_bottom, bits); | ||
111 | } | ||
112 | } | ||
113 | |||
114 | #endif // #ifdef HAVE_LCD_BITMAP | ||
115 | #endif // #ifndef SIMULATOR | ||
116 | |||