summaryrefslogtreecommitdiffstats
path: root/apps/plugins/fire.c
blob: a8d8d0afdbf1566a7dd1741c46513e0787d19364 (plain)
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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
/***************************************************************************
*             __________               __   ___.
*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
*                     \/            \/     \/    \/            \/
* $Id$
*
* Copyright (C) 2005 Kevin Ferrare
*
* Fire demo plugin
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/

#include "plugin.h"

#ifdef HAVE_LCD_BITMAP /* and also not for the Player */
#ifndef HAVE_LCD_COLOR
#include "gray.h"
#endif

PLUGIN_HEADER

/******************************* Globals ***********************************/

static struct plugin_api* rb; /* global api struct pointer */
static unsigned char *gbuf;
static unsigned int gbuf_size = 0;

static unsigned char fire[LCD_HEIGHT+3][LCD_WIDTH];
static unsigned char cooling_map[LCD_HEIGHT][LCD_WIDTH];
#ifndef HAVE_LCD_COLOR
static unsigned char draw_buffer[8*LCD_WIDTH];
#endif

/* Key assignement */

#if (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define FIRE_QUIT BUTTON_OFF
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_MODE
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_REC
#define FIRE_INCREASE_MULT BUTTON_UP
#define FIRE_DECREASE_MULT BUTTON_DOWN

#elif CONFIG_KEYPAD == RECORDER_PAD
#define FIRE_QUIT BUTTON_OFF
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_ON
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_PLAY
#define FIRE_INCREASE_MULT BUTTON_UP
#define FIRE_DECREASE_MULT BUTTON_DOWN

#elif CONFIG_KEYPAD == ONDIO_PAD
#define FIRE_QUIT BUTTON_OFF
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_MENU
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_RIGHT
#define FIRE_INCREASE_MULT BUTTON_UP
#define FIRE_DECREASE_MULT BUTTON_DOWN

#elif (CONFIG_KEYPAD == IPOD_3G_PAD) || (CONFIG_KEYPAD == IPOD_4G_PAD)
#define FIRE_QUIT BUTTON_MENU
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_SELECT
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_RIGHT
#define FIRE_INCREASE_MULT BUTTON_SCROLL_FWD
#define FIRE_DECREASE_MULT BUTTON_SCROLL_BACK

#elif (CONFIG_KEYPAD == IAUDIO_X5_PAD)
#define FIRE_QUIT BUTTON_REC
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_LEFT
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_RIGHT
#define FIRE_INCREASE_MULT BUTTON_UP
#define FIRE_DECREASE_MULT BUTTON_DOWN

#endif

#define MIN_FLAME_VALUE 0
#if LCD_HEIGHT > 64
#define COOL_MAX 5
#else
#define COOL_MAX 8
#endif

/* unsigned 16 bit multiplication (a single instruction on the SH) */
#define MULU16(a, b) ((unsigned long) \
                     (((unsigned short) (a)) * ((unsigned short) (b))))

#ifndef HAVE_LCD_COLOR
static const unsigned char palette[255]=
{/* logarithmic histogram equalisation */

      0,  15,  31,  50,  63,  74,  82,  89,  95, 101, 105, 110, 114, 118, 121,
    124, 127, 130, 133, 135, 137, 140, 142, 144, 146, 148, 149, 151, 153, 154,
    156, 158, 159, 160, 162, 163, 164, 166, 167, 168, 169, 170, 172, 173, 174,
    175, 176, 177, 178, 179, 180, 180, 181, 182, 183, 184, 185, 186, 186, 187,
    188, 189, 189, 190, 191, 192, 192, 193, 194, 194, 195, 196, 196, 197, 198,
    198, 199, 199, 200, 201, 201, 202, 202, 203, 203, 204, 204, 205, 206, 206,
    207, 207, 208, 208, 209, 209, 210, 210, 210, 211, 211, 212, 212, 213, 213,
    214, 214, 215, 215, 215, 216, 216, 217, 217, 217, 218, 218, 219, 219, 219,
    220, 220, 221, 221, 221, 222, 222, 222, 223, 223, 223, 224, 224, 225, 225,
    225, 226, 226, 226, 227, 227, 227, 228, 228, 228, 229, 229, 229, 229, 230,
    230, 230, 231, 231, 231, 232, 232, 232, 232, 233, 233, 233, 234, 234, 234,
    234, 235, 235, 235, 236, 236, 236, 236, 237, 237, 237, 237, 238, 238, 238,
    238, 239, 239, 239, 239, 240, 240, 240, 240, 241, 241, 241, 241, 242, 242,
    242, 242, 243, 243, 243, 243, 244, 244, 244, 244, 244, 245, 245, 245, 245,
    246, 246, 246, 246, 246, 247, 247, 247, 247, 247, 248, 248, 248, 248, 249,
    249, 249, 249, 249, 250, 250, 250, 250, 250, 251, 251, 251, 251, 251, 252,
    252, 252, 252, 252, 252, 253, 253, 253, 253, 253, 254, 254, 254, 254, 254
};
#else
#define L(r,g,b) LCD_RGBPACK(r,g,b)

static const fb_data colorpalette[256] = {
L(248,246,211), L(248,246,203), L(248,245,196), L(248,245,189), L(247,245,182),
L(248,245,174), L(248,244,167), L(248,244,160), L(248,243,153), L(247,243,145),
L(248,243,138), L(247,243,131), L(247,243,125), L(248,242,117), L(248,242,110),
L(247,242,102), L(248,241, 94), L(247,240, 85), L(247,241, 78), L(248,240, 70),
L(247,239, 63), L(247,240, 55), L(247,239, 47), L(247,239, 39), L(247,238, 31),
L(247,238, 23), L(247,236, 19), L(248,232, 21), L(248,228, 22), L(248,224, 23),
L(248,219, 25), L(249,215, 26), L(249,211, 27), L(249,206, 29), L(249,203, 30),
L(249,199, 31), L(250,194, 33), L(250,190, 34), L(251,186, 35), L(251,181, 37),
L(252,177, 38), L(251,172, 40), L(252,168, 41), L(252,163, 42), L(253,158, 44),
L(253,154, 45), L(253,149, 46), L(254,145, 48), L(253,141, 50), L(253,137, 49),
L(253,135, 49), L(252,133, 48), L(251,130, 47), L(249,129, 47), L(248,128, 46),
L(247,125, 46), L(247,124, 44), L(246,122, 44), L(244,119, 43), L(243,118, 43),
L(242,115, 42), L(242,113, 41), L(241,112, 40), L(240,109, 39), L(238,107, 39),
L(237,105, 38), L(236,103, 37), L(235,101, 37), L(234, 99, 36), L(233, 97, 35),
L(232, 95, 34), L(231, 93, 33), L(230, 91, 32), L(229, 89, 32), L(228, 86, 31),
L(227, 85, 30), L(226, 82, 29), L(225, 80, 29), L(224, 78, 28), L(223, 76, 28),
L(222, 74, 26), L(221, 72, 26), L(220, 69, 25), L(218, 67, 24), L(217, 64, 23),
L(215, 60, 22), L(213, 57, 21), L(212, 54, 19), L(210, 50, 18), L(208, 47, 17),
L(207, 44, 16), L(205, 41, 14), L(203, 37, 13), L(202, 34, 12), L(201, 30, 11),
L(199, 27, 10), L(197, 24,  9), L(196, 21,  8), L(194, 18,  7), L(192, 14,  5),
L(191, 11,  4), L(189,  8,  3), L(187,  5,  1), L(186,  2,  0), L(184,  0,  0),
L(181,  0,  0), L(178,  0,  0), L(175,  0,  0), L(172,  0,  0), L(170,  0,  0),
L(167,  0,  0), L(165,  0,  0), L(162,  0,  0), L(159,  0,  0), L(156,  0,  0),
L(153,  0,  0), L(152,  0,  0), L(149,  0,  0), L(146,  0,  0), L(143,  0,  0),
L(141,  0,  0), L(138,  0,  0), L(135,  0,  0), L(132,  0,  0), L(129,  0,  0),
L(127,  0,  0), L(126,  0,  0), L(123,  0,  0), L(120,  0,  0), L(117,  0,  0),
L(115,  0,  0), L(112,  0,  0), L(109,  0,  0), L(106,  0,  0), L(104,  0,  0),
L(101,  0,  0), L( 98,  0,  0), L( 95,  0,  0), L( 93,  0,  0), L( 92,  0,  0),
L( 91,  0,  0), L( 91,  0,  0), L( 90,  0,  0), L( 89,  0,  0), L( 88,  0,  0),
L( 88,  0,  0), L( 87,  0,  0), L( 86,  0,  0), L( 85,  0,  0), L( 84,  0,  0),
L( 84,  0,  0), L( 82,  0,  0), L( 82,  0,  0), L( 81,  0,  0), L( 80,  0,  0),
L( 80,  0,  0), L( 79,  0,  0), L( 78,  0,  0), L( 77,  0,  0), L( 76,  0,  0),
L( 76,  0,  0), L( 75,  0,  0), L( 74,  0,  0), L( 73,  0,  0), L( 72,  0,  0),
L( 72,  0,  0), L( 71,  0,  0), L( 70,  0,  0), L( 69,  0,  0), L( 68,  0,  0),
L( 68,  0,  0), L( 67,  0,  0), L( 66,  0,  0), L( 65,  0,  0), L( 65,  0,  0),
L( 63,  0,  0), L( 62,  0,  0), L( 62,  0,  0), L( 61,  0,  0), L( 60,  0,  0),
L( 59,  0,  0), L( 58,  0,  0), L( 58,  0,  0), L( 58,  0,  0), L( 57,  0,  0),
L( 56,  0,  0), L( 54,  0,  0), L( 54,  0,  0), L( 53,  0,  0), L( 52,  0,  0),
L( 52,  0,  0), L( 51,  0,  0), L( 50,  0,  0), L( 49,  0,  0), L( 48,  0,  0),
L( 47,  0,  0), L( 47,  0,  0), L( 46,  0,  0), L( 45,  0,  0), L( 44,  0,  0),
L( 44,  0,  0), L( 43,  0,  0), L( 42,  0,  0), L( 42,  0,  0), L( 40,  0,  0),
L( 40,  0,  0), L( 39,  0,  0), L( 38,  0,  0), L( 38,  0,  0), L( 37,  0,  0),
L( 36,  0,  0), L( 35,  0,  0), L( 34,  0,  0), L( 33,  0,  0), L( 32,  0,  0),
L( 32,  0,  0), L( 31,  0,  0), L( 30,  0,  0), L( 30,  0,  0), L( 28,  0,  0),
L( 28,  0,  0), L( 27,  0,  0), L( 26,  0,  0), L( 25,  0,  0), L( 25,  0,  0),
L( 23,  0,  0), L( 23,  0,  0), L( 22,  0,  0), L( 21,  0,  0), L( 21,  0,  0),
L( 20,  0,  0), L( 19,  0,  0), L( 18,  0,  0), L( 18,  0,  0), L( 16,  0,  0),
L( 16,  0,  0), L( 15,  0,  0), L( 14,  0,  0), L( 14,  0,  0), L( 13,  0,  0),
L( 12,  0,  0), L( 11,  0,  0), L( 10,  0,  0), L(  9,  0,  0), L(  9,  0,  0),
L(  8,  0,  0), L(  7,  0,  0), L(  6,  0,  0), L(  5,  0,  0), L(  5,  0,  0),
L(  4,  0,  0), L(  3,  0,  0), L(  3,  0,  0), L(  2,  0,  0), L(  1,  0,  0),
L(  0,  0,  0)
};
#endif

static inline void tab_init_rand(unsigned char *tab, unsigned int tab_size,
                                 int rand_max)
{
    unsigned char *end = tab + tab_size;

    while(tab < end)
        *tab++ = (unsigned char)rb->rand() % rand_max;
}

static inline void fire_generate(int mult, int flames_type, bool moving)
{
    unsigned int pixel_value = 0; /* stop the compiler complaining */
    unsigned int cooling_value;
    unsigned char *ptr, *end, *cool;

    /* Randomize the bottom line */
    if(moving)
    {/* moving must be true the first time the function is called */
        ptr = &fire[LCD_HEIGHT][0];
        end = ptr + LCD_WIDTH;

        do
        {
            *ptr++ = (MIN_FLAME_VALUE + rb->rand() % (256-MIN_FLAME_VALUE));
        }
        while (ptr < end);
    }
    rb->yield();

    /* Convolve the pixels and handle cooling (to add nice shapes effects later) */
    cool = &cooling_map[0][0];
    ptr = &fire[0][0];
    end = ptr + LCD_HEIGHT*LCD_WIDTH;
    
    switch (flames_type)
    {
      case 0:
        do
        {
            pixel_value = ptr[LCD_WIDTH-1]  /* fire[y+1][x-1] */
                        + ptr[2*LCD_WIDTH]  /* fire[y+2][x] */
                        + ptr[LCD_WIDTH+1]  /* fire[y+1][x+1] */
                        + ptr[3*LCD_WIDTH]; /* fire[y+3][x] */
            pixel_value =  MULU16(pixel_value, mult) >> 10;

            cooling_value = *cool++;
            if (cooling_value <= pixel_value)
                pixel_value -= cooling_value;
            /* else it's too cold, don't frost the pixels !!! */

            if (pixel_value > 255)
                pixel_value = 255;

            *ptr++ = pixel_value;
        }
        while (ptr < end);
        break;

      case 1:
        do
        {
            pixel_value = ptr[LCD_WIDTH-1]  /* fire[y+1][x-1] */
                        + ptr[LCD_WIDTH]    /* fire[y+1][x] */
                        + ptr[LCD_WIDTH+1]  /* fire[y+1][x+1] */
                        + ptr[2*LCD_WIDTH]; /* fire[y+2][x] */
            pixel_value =  MULU16(pixel_value, mult) >> 10;

            cooling_value = *cool++;
            if (cooling_value <= pixel_value)
                pixel_value -= cooling_value;
            /* else it's too cold, don't frost the pixels !!! */

            if (pixel_value > 255)
                pixel_value = 255;

            *ptr++ = pixel_value;
        }
        while (ptr < end);
        break;

      default: /* We should never reach this */
        break;
    }
    rb->yield();
}

static inline void fire_draw(void)
{
#ifndef HAVE_LCD_COLOR
    int block;
    unsigned char *dest, *end;
    unsigned char *src = &fire[0][0];

    for (block = 0; block < LCD_HEIGHT; block += 8)
    {
        dest = draw_buffer;
        end = dest + 8*LCD_WIDTH;

        do
            *dest++ = palette[*src++];
        while(dest < end);

        gray_ub_gray_bitmap(draw_buffer, 0, block, LCD_WIDTH, 8);
    }
#else
    fb_data* dest = rb->lcd_framebuffer;
    fb_data* end = rb->lcd_framebuffer+(LCD_WIDTH*LCD_HEIGHT);
    unsigned char* src = &fire[0][0];

    while (dest < end)
    {
        *(dest++) = colorpalette[*(src++)];
    }
    rb->lcd_update();
#endif
}

void cleanup(void *parameter)
{
    (void)parameter;
    
#if !defined(SIMULATOR) && defined(HAVE_ADJUSTABLE_CPU_FREQ)
    rb->cpu_boost(false);
#endif
#ifndef HAVE_LCD_COLOR
    gray_release();
#endif
    rb->backlight_set_timeout(rb->global_settings->backlight_timeout);
}

/*
 * Main function that also contain the main plasma
 * algorithm.
 */

int main(void)
{
    int shades, button;
#ifdef HAVE_LCD_COLOR
    int mult = 267;
#else
    int mult = 261;
#endif
    int flames_type=0;
    bool moving=true;
    /* get the remainder of the plugin buffer */
    gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);

#ifdef HAVE_LCD_COLOR
    shades = 256;
#else
    shades = gray_init(rb, gbuf, gbuf_size, false, LCD_WIDTH, LCD_HEIGHT/8,
                       32, NULL) + 1;
    if(shades <= 1)
    {
        rb->splash(HZ, true, "not enough memory");
        return PLUGIN_ERROR;
    }
#endif

#if !defined(SIMULATOR) && defined(HAVE_ADJUSTABLE_CPU_FREQ)
    rb->cpu_boost(true);
#endif
#ifndef HAVE_LCD_COLOR
    /* switch on grayscale overlay */
    gray_show(true);
#endif
    rb->memset(&fire[0][0], 0, sizeof(fire));
    tab_init_rand(&cooling_map[0][0], LCD_HEIGHT*LCD_WIDTH, COOL_MAX);
    while (true)
    {
        fire_generate(mult, flames_type, moving);
        fire_draw();
        rb->yield();

        button = rb->button_get(false);

        switch(button)
        {
            case(FIRE_QUIT):
                cleanup(NULL);
                return PLUGIN_OK;
                break;

            case (FIRE_INCREASE_MULT):
                ++mult;
                break;

            case (FIRE_DECREASE_MULT):
                if (mult > 0)
                    --mult;
                break;

            case (FIRE_SWITCH_FLAMES_TYPE):
                flames_type = (flames_type + 1) % 2;
                break;

            case (FIRE_SWITCH_FLAMES_MOVING):
                moving = !moving;
                break;

            default:
                if (rb->default_event_handler_ex(button, cleanup, NULL)
                    == SYS_USB_CONNECTED)
                    return PLUGIN_USB_CONNECTED;
                break;
        }
    }
}

/*************************** Plugin entry point ****************************/

enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
    int ret;

    rb = api; // copy to global api pointer
    (void)parameter;
    if (rb->global_settings->backlight_timeout > 0)
        rb->backlight_set_timeout(1);/* keep the light on */

    ret = main();

    return ret;
}

#endif // #ifdef HAVE_LCD_BITMAP