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rockbox/apps/plugins/fire.c

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/***************************************************************************
* __________ __ ___.
* 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
#define FIRE_RC_QUIT BUTTON_RC_STOP
#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_POWER
#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
#elif (CONFIG_KEYPAD == GIGABEAT_PAD)
#define FIRE_QUIT BUTTON_A
#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
#elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
#define FIRE_QUIT BUTTON_POWER
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_LEFT
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_RIGHT
#define FIRE_INCREASE_MULT BUTTON_SCROLL_UP
#define FIRE_DECREASE_MULT BUTTON_SCROLL_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;
#ifdef 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,
32, 2<<8, NULL) + 1;
if(shades <= 1)
{
rb->splash(HZ, true, "not enough memory");
return PLUGIN_ERROR;
}
#endif
#ifdef 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)
{
#ifdef FIRE_RC_QUIT
case FIRE_RC_QUIT :
#endif
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 */
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