1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2010 Marcin Bukat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "lcd.h"
#include <lib/pluginlib_bmp.h>
#include "../imageviewer.h"
#include "ppm_decoder.h"
#include "bmp.h"
static char print[32]; /* use a common snprintf() buffer */
/* decompressed image in the possible sizes (1,2,4,8), wasting the other */
static unsigned char *disp[9];
static unsigned char *disp_buf;
static struct ppm_info ppm;
#if defined(HAVE_LCD_COLOR)
#define resize_bitmap smooth_resize_bitmap
#else
#define resize_bitmap grey_resize_bitmap
#endif
#if defined(USEGSLIB) && (CONFIG_PLATFORM & PLATFORM_HOSTED)
/* hack: fix error "undefined reference to `_grey_info'". */
GREY_INFO_STRUCT
#endif /* USEGSLIB */
static void draw_image_rect(struct image_info *info,
int x, int y, int width, int height)
{
unsigned char **pdisp = (unsigned char **)info->data;
#ifdef HAVE_LCD_COLOR
rb->lcd_bitmap_part((fb_data *)*pdisp, info->x + x, info->y + y,
STRIDE(SCREEN_MAIN, info->width, info->height),
x + MAX(0, (LCD_WIDTH-info->width)/2),
y + MAX(0, (LCD_HEIGHT-info->height)/2),
width, height);
#else
mylcd_ub_gray_bitmap_part(*pdisp,
info->x + x, info->y + y, info->width,
x + MAX(0, (LCD_WIDTH-info->width)/2),
y + MAX(0, (LCD_HEIGHT-info->height)/2),
width, height);
#endif
}
static int img_mem(int ds)
{
#ifdef USEGSLIB
return (ppm.x/ds) * (ppm.y/ds);
#else
return (ppm.x/ds) * (ppm.y/ds) * FB_DATA_SZ;
#endif
}
static int load_image(char *filename, struct image_info *info,
unsigned char *buf, ssize_t *buf_size,
int offset, int filesize)
{
int fd;
int rc = PLUGIN_OK;
long time = 0; /* measured ticks */
int w, h; /* used to center output */
unsigned char *memory, *memory_max;
size_t memory_size;
/* cleanup */
memset(&disp, 0, sizeof(disp));
/* align buffer */
memory = (unsigned char *)((intptr_t)(buf + 3) & ~3);
memory_max = (unsigned char *)((intptr_t)(memory + *buf_size) & ~3);
memory_size = memory_max - memory;
fd = rb->open(filename, O_RDONLY);
if (fd < 0)
{
rb->splashf(HZ, "err opening %s: %d", filename, fd);
return PLUGIN_ERROR;
}
if (offset)
{
rb->lseek(fd, offset, SEEK_SET);
}
else
{
filesize = rb->filesize(fd);
}
DEBUGF("reading file '%s'\n", filename);
if (!iv->running_slideshow)
{
rb->lcd_puts(0, 0, rb->strrchr(filename,'/')+1);
rb->lcd_putsf(0, 1, "loading %zu bytes", filesize);
rb->lcd_update();
}
/* init decoder struct */
ppm.buf = memory;
ppm.buf_size = memory_size;
/* the actual decoding */
time = *rb->current_tick;
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(true);
rc = read_ppm(fd, &ppm);
rb->cpu_boost(false);
#else
rc = read_ppm(fd, &ppm);
#endif /*HAVE_ADJUSTABLE_CPU_FREQ*/
time = *rb->current_tick - time;
rb->close(fd);
if (rc != PLUGIN_OK)
{
return rc;
}
if (!iv->running_slideshow)
{
rb->snprintf(print, sizeof(print), " %ld.%02ld sec ", time/HZ, time%HZ);
rb->lcd_getstringsize(print, &w, &h); /* centered in progress bar */
rb->lcd_putsxy((LCD_WIDTH - w)/2, LCD_HEIGHT - h, print);
rb->lcd_update();
}
info->x_size = ppm.x;
info->y_size = ppm.y;
ppm.native_img_size = (ppm.native_img_size + 3) & ~3;
disp_buf = buf + ppm.native_img_size;
*buf_size = memory_max - disp_buf;
return PLUGIN_OK;
}
static int get_image(struct image_info *info, int frame, int ds)
{
(void)frame;
unsigned char **p_disp = &disp[ds]; /* short cut */
struct ppm_info *p_ppm = &ppm;
info->width = ppm.x / ds;
info->height = ppm.y / ds;
info->data = p_disp;
if (*p_disp != NULL)
{
/* we still have it */
return PLUGIN_OK;
}
/* assign image buffer */
if (ds > 1)
{
if (!iv->running_slideshow)
{
rb->lcd_putsf(0, 3, "resizing %d*%d", info->width, info->height);
rb->lcd_update();
}
struct bitmap bmp_src, bmp_dst;
int size = img_mem(ds);
if (disp_buf + size >= p_ppm->buf + p_ppm->buf_size)
{
/* have to discard the current */
int i;
for (i=1; i<=8; i++)
disp[i] = NULL; /* invalidate all bitmaps */
/* start again from the beginning of the buffer */
disp_buf = p_ppm->buf + p_ppm->native_img_size;
}
*p_disp = disp_buf;
disp_buf += size;
bmp_src.width = ppm.x;
bmp_src.height = ppm.y;
bmp_src.data = ppm.buf;
bmp_dst.width = info->width;
bmp_dst.height = info->height;
bmp_dst.data = *p_disp;
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(true);
resize_bitmap(&bmp_src, &bmp_dst);
rb->cpu_boost(false);
#else
resize_bitmap(&bmp_src, &bmp_dst);
#endif /*HAVE_ADJUSTABLE_CPU_FREQ*/
}
else
{
*p_disp = p_ppm->buf;
}
return PLUGIN_OK;
}
const struct image_decoder image_decoder = {
true,
img_mem,
load_image,
get_image,
draw_image_rect,
};
IMGDEC_HEADER
|