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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 fire[LCD_HEIGHT+3][LCD_WIDTH];
static unsigned char cooling_map[LCD_HEIGHT][LCD_WIDTH];
#ifndef HAVE_LCD_COLOR
static unsigned char *gbuf;
static unsigned int gbuf_size = 0;
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 == ARCHOS_AV300_PAD
#define FIRE_QUIT BUTTON_OFF
#define FIRE_SWITCH_FLAMES_TYPE BUTTON_ON
#define FIRE_SWITCH_FLAMES_MOVING BUTTON_SELECT
#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 == SANSA_E200_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 == 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
#define COOL_MAX (440/LCD_HEIGHT+2)
/* fast unsigned multiplication (16x16bit->32bit or 32x32bit->32bit,
* whichever is faster for the architecture) */
#ifdef CPU_ARM
#define FMULU(a, b) ((uint32_t) (((uint32_t) (a)) * ((uint32_t) (b))))
#else /* SH1, coldfire */
#define FMULU(a, b) ((uint32_t) (((uint16_t) (a)) * ((uint16_t) (b))))
#endif
#ifndef HAVE_LCD_COLOR
static const unsigned char palette[256] = {
0, 1, 3, 4, 6, 7, 9, 10, 12, 13, 15, 16, 18, 19, 21, 22,
24, 25, 27, 28, 30, 31, 33, 34, 36, 37, 39, 40, 42, 43, 45, 46,
48, 49, 51, 52, 54, 55, 57, 59, 60, 61, 63, 64, 66, 67, 69, 70,
72, 73, 75, 76, 78, 79, 81, 82, 84, 85, 87, 88, 90, 91, 93, 94,
96, 97, 99, 100, 102, 103, 105, 106, 108, 109, 111, 112, 114, 115, 117, 118,
120, 121, 123, 124, 126, 127, 129, 130, 132, 133, 135, 136, 138, 139, 141, 142,
144, 145, 147, 148, 150, 151, 153, 154, 156, 157, 159, 160, 162, 163, 165, 166,
168, 169, 171, 172, 174, 175, 177, 178, 180, 181, 183, 184, 186, 187, 189, 190,
192, 193, 195, 196, 198, 199, 201, 202, 204, 205, 207, 208, 210, 211, 213, 214,
216, 217, 219, 220, 222, 223, 225, 226, 228, 229, 231, 232, 234, 235, 237, 238,
/* 'regular' fire doesn't exceed this value */
240, 240, 240, 240, 240, 240, 241, 241, 241, 241, 241, 241, 242, 242, 242, 242,
242, 242, 243, 243, 243, 243, 243, 243, 244, 244, 244, 244, 244, 244, 245, 245,
245, 245, 245, 245, 246, 246, 246, 246, 246, 246, 247, 247, 247, 247, 247, 247,
248, 248, 248, 248, 248, 248, 249, 249, 249, 249, 249, 249, 250, 250, 250, 250,
250, 250, 251, 251, 251, 251, 251, 251, 252, 252, 252, 252, 252, 252, 253, 253,
253, 253, 253, 253, 254, 254, 254, 254, 254, 254, 255, 255, 255, 255, 255, 255
};
#else
#define L(r,g,b) LCD_RGBPACK(r,g,b)
static const fb_data colorpalette[256] = {
L( 0, 0, 0), L( 5, 0, 0), L( 10, 0, 0), L( 15, 0, 0), L( 20, 0, 0),
L( 25, 0, 0), L( 30, 0, 0), L( 35, 0, 0), L( 40, 0, 0), L( 45, 0, 0),
L( 50, 0, 0), L( 55, 0, 0), L( 60, 0, 0), L( 65, 0, 0), L( 70, 0, 0),
L( 75, 0, 0), L( 80, 0, 0), L( 85, 0, 0), L( 90, 0, 0), L( 95, 0, 0),
L(100, 0, 0), L(105, 0, 0), L(110, 0, 0), L(115, 0, 0), L(120, 0, 0),
L(125, 0, 0), L(130, 0, 0), L(135, 0, 0), L(140, 0, 0), L(145, 0, 0),
L(150, 0, 0), L(155, 0, 0), L(160, 0, 0), L(165, 0, 0), L(170, 0, 0),
L(175, 0, 0), L(180, 0, 0), L(185, 0, 0), L(186, 2, 0), L(187, 5, 1),
L(188, 6, 2), L(189, 8, 3), L(190, 10, 4), L(191, 12, 4), L(192, 14, 5),
L(193, 15, 6), L(194, 17, 7), L(195, 19, 8), L(196, 21, 8), L(197, 22, 9),
L(198, 24, 10), L(198, 26, 10), L(199, 28, 10), L(200, 29, 11), L(201, 32, 11),
L(202, 34, 12), L(203, 36, 13), L(204, 39, 13), L(205, 40, 14), L(206, 42, 14),
L(207, 43, 15), L(208, 46, 16), L(208, 48, 17), L(209, 50, 18), L(210, 51, 18),
L(212, 53, 19), L(213, 55, 20), L(214, 57, 21), L(215, 59, 22), L(216, 61, 22),
L(217, 63, 23), L(217, 65, 24), L(218, 67, 24), L(219, 69, 25), L(220, 70, 25),
L(222, 72, 26), L(223, 74, 27), L(224, 76, 28), L(225, 78, 28), L(225, 80, 29),
L(226, 82, 29), L(227, 84, 30), L(228, 86, 31), L(228, 88, 32), L(229, 90, 32),
L(230, 92, 32), L(231, 94, 33), L(232, 96, 34), L(233, 98, 35), L(234, 99, 36),
L(235,101, 37), L(236,103, 37), L(237,105, 38), L(238,107, 39), L(240,109, 39),
L(240,111, 40), L(241,113, 40), L(242,114, 41), L(242,116, 42), L(243,119, 43),
L(245,120, 43), L(246,122, 44), L(247,124, 44), L(248,126, 46), L(248,128, 47),
L(249,130, 47), L(251,131, 47), L(252,133, 48), L(253,135, 49), L(253,138, 49),
L(253,140, 50), L(254,143, 49), L(254,145, 48), L(253,148, 47), L(253,151, 46),
L(253,154, 45), L(253,156, 44), L(253,158, 44), L(252,162, 42), L(252,165, 41),
L(252,167, 41), L(252,170, 40), L(251,173, 40), L(252,175, 38), L(252,178, 37),
L(251,181, 37), L(251,183, 36), L(251,186, 35), L(250,189, 34), L(250,192, 33),
L(250,194, 33), L(249,198, 31), L(249,200, 31), L(249,203, 30), L(249,206, 29),
L(249,209, 28), L(249,211, 27), L(249,214, 26), L(248,216, 25), L(248,219, 25),
L(248,222, 24), L(248,224, 23), L(248,227, 22), L(248,230, 21), L(248,232, 21),
L(247,236, 19), L(247,238, 23), L(247,239, 31), L(247,239, 45), L(247,240, 55),
L(248,240, 68), L(247,241, 78), L(248,241, 90), L(247,242,102), L(248,242,114),
L(247,243,125), L(248,243,138), L(248,243,153), L(248,244,162), L(248,245,174),
/* 'regular' fire doesn't exceed this value */
L(247,245,182), L(247,245,182), L(247,245,183), L(247,245,183), L(247,245,184),
L(247,245,184), L(247,245,185), L(247,245,185), L(247,245,186), L(247,245,186),
L(247,245,187), L(247,245,187), L(247,245,188), L(247,245,188), L(247,245,189),
L(247,245,189), L(248,245,190), L(248,245,190), L(248,245,191), L(248,245,191),
L(248,245,192), L(248,245,192), L(248,245,193), L(248,245,193), L(248,245,194),
L(248,245,194), L(248,245,195), L(248,245,195), L(248,245,196), L(248,245,196),
L(248,245,197), L(248,245,197), L(248,245,198), L(248,245,198), L(248,245,199),
L(248,245,199), L(248,245,200), L(248,245,200), L(248,245,201), L(248,245,201),
L(248,245,202), L(248,245,202), L(248,245,203), L(248,245,203), L(248,245,204),
L(248,245,204), L(248,245,205), L(248,245,205), L(248,246,206), L(248,246,206),
L(248,246,207), L(248,246,207), L(248,246,208), L(248,246,208), L(248,246,209),
L(248,246,209), L(248,246,210), L(248,246,210), L(248,246,211), L(248,246,211),
L(248,246,212), L(248,246,212), L(248,246,213), L(248,246,213), L(248,246,214),
L(248,246,214), L(248,246,215), L(248,246,215), L(248,246,216), L(248,246,216),
L(248,246,217), L(248,246,217), L(248,246,218), L(248,246,218), L(248,246,219),
L(248,246,219), L(248,246,220), L(248,246,220), L(248,246,221), L(248,246,221),
L(248,246,222), L(248,246,222), L(248,246,223), L(248,246,223), L(248,246,224),
L(248,246,224), L(248,246,225), L(248,246,225), L(248,246,226), L(248,246,226),
L(248,246,227), L(248,246,227), L(248,246,228), L(248,246,228), L(248,246,229),
L(248,246,229)
};
#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 = FMULU(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:
mult -= 2;
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 = FMULU(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];
do
*dest++ = colorpalette[*src++];
while (dest < end);
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 button;
int mult = 261;
int flames_type=0;
bool moving=true;
#ifndef HAVE_LCD_COLOR
int shades;
/* get the remainder of the plugin buffer */
gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
shades = gray_init(rb, gbuf, gbuf_size, false, LCD_WIDTH, LCD_HEIGHT,
32, 1<<8, NULL) + 1;
if(shades <= 1)
{
rb->splash(HZ, true, "not enough memory");
return PLUGIN_ERROR;
}
/* switch on grayscale overlay */
gray_show(true);
#endif
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(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 LCD_DEPTH > 1
rb->lcd_set_backdrop(NULL);
#endif
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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