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rockbox/apps/plugins/test_grey.c
Steve Bavin 6526577818 Plugin parameters should be const. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17492 a1c6a512-1295-4272-9138-f99709370657
2008-05-13 09:57:56 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 Jens Arnold
*
* 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"
#include "grey.h"
#include "helper.h"
PLUGIN_HEADER
#if (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) \
|| (CONFIG_KEYPAD == IPOD_1G2G_PAD)
#define GREY_QUIT BUTTON_MENU
#define GREY_OK BUTTON_SELECT
#define GREY_PREV BUTTON_LEFT
#define GREY_NEXT BUTTON_RIGHT
#define GREY_UP BUTTON_SCROLL_FWD
#define GREY_DOWN BUTTON_SCROLL_BACK
#elif CONFIG_KEYPAD == IRIVER_H100_PAD
#define GREY_QUIT BUTTON_OFF
#define GREY_OK BUTTON_SELECT
#define GREY_PREV BUTTON_LEFT
#define GREY_NEXT BUTTON_RIGHT
#define GREY_UP BUTTON_UP
#define GREY_DOWN BUTTON_DOWN
#elif CONFIG_KEYPAD == RECORDER_PAD
#define GREY_QUIT BUTTON_OFF
#define GREY_OK BUTTON_PLAY
#define GREY_PREV BUTTON_LEFT
#define GREY_NEXT BUTTON_RIGHT
#define GREY_UP BUTTON_UP
#define GREY_DOWN BUTTON_DOWN
#elif CONFIG_KEYPAD == ONDIO_PAD
#define GREY_QUIT BUTTON_OFF
#define GREY_OK BUTTON_MENU
#define GREY_PREV BUTTON_LEFT
#define GREY_NEXT BUTTON_RIGHT
#define GREY_UP BUTTON_UP
#define GREY_DOWN BUTTON_DOWN
#elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD) \
|| (CONFIG_KEYPAD == MROBE100_PAD)
#define GREY_QUIT BUTTON_POWER
#define GREY_OK BUTTON_SELECT
#define GREY_PREV BUTTON_LEFT
#define GREY_NEXT BUTTON_RIGHT
#define GREY_UP BUTTON_UP
#define GREY_DOWN BUTTON_DOWN
#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
#define GREY_QUIT BUTTON_RC_REC
#define GREY_OK BUTTON_RC_PLAY
#define GREY_PREV BUTTON_RC_REW
#define GREY_NEXT BUTTON_RC_FF
#define GREY_UP BUTTON_RC_VOL_UP
#define GREY_DOWN BUTTON_RC_VOL_DOWN
#else
#error unsupported keypad
#endif
#define BLOCK_WIDTH (LCD_WIDTH/8)
#define BLOCK_HEIGHT (LCD_HEIGHT/8)
#define STEPS 16
GREY_INFO_STRUCT
static const unsigned char dither_matrix[16][16] = {
{ 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 },
{ 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 },
{ 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 },
{ 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 },
{ 8,200, 56,248, 4,196, 52,244, 11,203, 59,251, 7,199, 55,247 },
{ 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 },
{ 40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 },
{ 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 },
{ 2,194, 50,242, 14,206, 62,254, 1,193, 49,241, 13,205, 61,253 },
{ 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 },
{ 34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 },
{ 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 },
{ 10,202, 58,250, 6,198, 54,246, 9,201, 57,249, 5,197, 53,245 },
{ 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 },
{ 42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 },
{ 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 }
};
static unsigned char input_levels[STEPS+1];
static unsigned char lcd_levels[STEPS+1];
static const struct plugin_api* rb;
static unsigned char *gbuf;
static size_t gbuf_size = 0;
static void fill_rastered(int bx, int by, int bw, int bh, int step)
{
int x, xmax, y, ymax;
int level;
if (step < 0)
step = 0;
else if (step > STEPS)
step = STEPS;
level = input_levels[step];
level += (level-1) >> 7;
for (y = (LCD_HEIGHT/2) + by * BLOCK_HEIGHT, ymax = y + bh * BLOCK_HEIGHT;
y < ymax; y++)
{
for (x = (LCD_WIDTH/2) + bx * BLOCK_WIDTH, xmax = x + bw * BLOCK_WIDTH;
x < xmax; x++)
{
grey_set_foreground((level > dither_matrix[y & 0xf][x & 0xf])
? 255 : 0);
grey_drawpixel(x, y);
}
}
}
/* plugin entry point */
enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter)
{
bool done = false;
int cur_step = 1;
int button, i, l, fd;
unsigned char filename[MAX_PATH];
/* standard stuff */
(void)parameter;
rb = api;
gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
if (!grey_init(rb, gbuf, gbuf_size,
GREY_BUFFERED|GREY_RAWMAPPED|GREY_ON_COP,
LCD_WIDTH, LCD_HEIGHT, NULL))
{
rb->splash(HZ, "Not enough memory.");
return PLUGIN_ERROR;
}
for (i = 0; i <= STEPS; i++)
input_levels[i] = lcd_levels[i] = (255 * i + (STEPS/2)) / STEPS;
backlight_force_on(rb); /* backlight control in lib/helper.c */
grey_set_background(0); /* set background to black */
grey_clear_display();
grey_show(true);
while (!done)
{
fill_rastered(-3, -3, 2, 2, cur_step - 1);
fill_rastered(-1, -3, 2, 2, cur_step);
fill_rastered(1, -3, 2, 2, cur_step + 1);
fill_rastered(-3, -1, 2, 2, cur_step);
grey_set_foreground(lcd_levels[cur_step]);
grey_fillrect(LCD_WIDTH/2-BLOCK_WIDTH, LCD_HEIGHT/2-BLOCK_HEIGHT,
2*BLOCK_WIDTH, 2*BLOCK_HEIGHT);
fill_rastered(1, -1, 2, 2, cur_step);
fill_rastered(-3, 1, 2, 2, cur_step + 1);
fill_rastered(-1, 1, 2, 2, cur_step);
fill_rastered(1, 1, 2, 2, cur_step - 1);
grey_update();
button = rb->button_get(true);
switch (button)
{
case GREY_PREV:
if (cur_step > 0)
cur_step--;
break;
case GREY_NEXT:
if (cur_step < STEPS)
cur_step++;
break;
case GREY_UP:
case GREY_UP|BUTTON_REPEAT:
l = lcd_levels[cur_step];
if (l < 255)
{
l++;
for (i = cur_step; i <= STEPS; i++)
if (lcd_levels[i] < l)
lcd_levels[i] = l;
}
break;
case GREY_DOWN:
case GREY_DOWN|BUTTON_REPEAT:
l = lcd_levels[cur_step];
if (l > 0)
{
l--;
for (i = cur_step; i >= 0; i--)
if (lcd_levels[i] > l)
lcd_levels[i] = l;
}
break;
case GREY_OK:
rb->create_numbered_filename(filename, "/", "test_grey_",
".txt", 2 IF_CNFN_NUM_(, NULL));
fd = rb->open(filename, O_RDWR|O_CREAT|O_TRUNC);
if (fd >= 0)
{
for (i = 0; i <= STEPS; i++)
rb->fdprintf(fd, "%3d: %3d\n", input_levels[i],
lcd_levels[i]);
rb->close(fd);
}
/* fall through */
case GREY_QUIT:
done = true;
break;
}
}
grey_release();
backlight_use_settings(rb); /* backlight control in lib/helper.c */
return PLUGIN_OK;
}
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