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foxbox/apps/plugins/oscilloscope.c
Jens Arnold b318b3e84f Rewrite of oscilloscope plugin: * Doesn't use a timer isr anymore, ported to swcodec targets. * Added speed adjustment. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8969 a1c6a512-1295-4272-9138-f99709370657
2006-03-09 07:52:26 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Oscilloscope, with the thought-to-be impossible horizontal aspect!
*
* Copyright (C) 2004-2006 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"
#ifdef HAVE_LCD_BITMAP
#include "xlcd.h"
PLUGIN_HEADER
/* The different drawing modes */
#define OSC_MODE_FILLED 0
#define OSC_MODE_OUTLINE 1
#define OSC_MODE_PIXEL 2
#define OSC_MODE_COUNT 3
#define MAX_PEAK 0x8000
/* variable button definitions */
#if CONFIG_KEYPAD == RECORDER_PAD
#define OSCILLOSCOPE_QUIT BUTTON_OFF
#define OSCILLOSCOPE_MODE BUTTON_F1
#define OSCILLOSCOPE_SCROLL BUTTON_F2
#define OSCILLOSCOPE_PAUSE BUTTON_PLAY
#define OSCILLOSCOPE_SPEED_UP BUTTON_RIGHT
#define OSCILLOSCOPE_SPEED_DOWN BUTTON_LEFT
#define OSCILLOSCOPE_VOL_UP BUTTON_UP
#define OSCILLOSCOPE_VOL_DOWN BUTTON_DOWN
#elif CONFIG_KEYPAD == ONDIO_PAD
#define OSCILLOSCOPE_QUIT BUTTON_OFF
#define OSCILLOSCOPE_MODE_PRE BUTTON_MENU
#define OSCILLOSCOPE_MODE (BUTTON_MENU | BUTTON_REL)
#define OSCILLOSCOPE_SCROLL (BUTTON_MENU | BUTTON_RIGHT)
#define OSCILLOSCOPE_PAUSE (BUTTON_MENU | BUTTON_OFF)
#define OSCILLOSCOPE_SPEED_UP BUTTON_RIGHT
#define OSCILLOSCOPE_SPEED_DOWN BUTTON_LEFT
#define OSCILLOSCOPE_VOL_UP BUTTON_UP
#define OSCILLOSCOPE_VOL_DOWN BUTTON_DOWN
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define OSCILLOSCOPE_QUIT BUTTON_OFF
#define OSCILLOSCOPE_MODE BUTTON_SELECT
#define OSCILLOSCOPE_SCROLL BUTTON_MODE
#define OSCILLOSCOPE_PAUSE BUTTON_ON
#define OSCILLOSCOPE_SPEED_UP BUTTON_RIGHT
#define OSCILLOSCOPE_SPEED_DOWN BUTTON_LEFT
#define OSCILLOSCOPE_VOL_UP BUTTON_UP
#define OSCILLOSCOPE_VOL_DOWN BUTTON_DOWN
#elif (CONFIG_KEYPAD == IPOD_3G_PAD) || (CONFIG_KEYPAD == IPOD_4G_PAD)
#define OSCILLOSCOPE_QUIT (BUTTON_SELECT | BUTTON_MENU)
#define OSCILLOSCOPE_MODE (BUTTON_SELECT | BUTTON_PLAY)
#define OSCILLOSCOPE_SCROLL (BUTTON_SELECT | BUTTON_RIGHT)
#define OSCILLOSCOPE_PAUSE BUTTON_PLAY
#define OSCILLOSCOPE_SPEED_UP BUTTON_RIGHT
#define OSCILLOSCOPE_SPEED_DOWN BUTTON_LEFT
#define OSCILLOSCOPE_VOL_UP BUTTON_SCROLL_FWD
#define OSCILLOSCOPE_VOL_DOWN BUTTON_SCROLL_BACK
#elif (CONFIG_KEYPAD == GIGABEAT_PAD)
#define OSCILLOSCOPE_QUIT BUTTON_POWER
#define OSCILLOSCOPE_MODE BUTTON_SELECT
#define OSCILLOSCOPE_SCROLL BUTTON_MENU
#define OSCILLOSCOPE_PAUSE BUTTON_A
#define OSCILLOSCOPE_SPEED_UP BUTTON_RIGHT
#define OSCILLOSCOPE_SPEED_DOWN BUTTON_LEFT
#define OSCILLOSCOPE_VOL_UP BUTTON_VOL_UP
#define OSCILLOSCOPE_VOL_DOWN BUTTON_VOL_DOWN
#elif CONFIG_KEYPAD == IAUDIO_X5_PAD
#define OSCILLOSCOPE_QUIT BUTTON_POWER
#define OSCILLOSCOPE_MODE BUTTON_SELECT
#define OSCILLOSCOPE_SCROLL BUTTON_REC
#define OSCILLOSCOPE_PAUSE BUTTON_PLAY
#define OSCILLOSCOPE_SPEED_UP BUTTON_RIGHT
#define OSCILLOSCOPE_SPEED_DOWN BUTTON_LEFT
#define OSCILLOSCOPE_VOL_UP BUTTON_UP
#define OSCILLOSCOPE_VOL_DOWN BUTTON_DOWN
#endif
#if defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
#define mas_codec_readreg(x) rand()%MAX_PEAK
#endif
/* global variables */
struct plugin_api* rb; /* global api struct pointer */
int osc_mode = OSC_MODE_FILLED;
int osc_delay = 1; /* in ticks */
bool osc_scroll = true;
long last_tick = 0;
/* implementation */
void animate(int cur_left, int cur_right)
{
static int last_x = 0;
static int last_left, last_right;
int cur_x, x;
int left, right, dl, dr;
long cur_tick = *rb->current_tick;
long d = (cur_tick - last_tick) / osc_delay;
bool full_update = false;
if (d == 0) /* too early, bail out */
return;
last_tick = cur_tick;
if (d > HZ) /* first call or too much delay, (re)start */
{
last_left = cur_left;
last_right = cur_right;
return;
}
cur_x = last_x + d;
if (cur_x >= LCD_WIDTH)
{
if (osc_scroll) /* scroll */
{
int shift = cur_x - (LCD_WIDTH-1);
xlcd_scroll_left(shift);
full_update = true;
cur_x -= shift;
last_x -= shift;
}
else /* wrap */
{
cur_x -= LCD_WIDTH;
}
}
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
if (cur_x > last_x)
{
rb->lcd_fillrect(last_x + 1, 0, d + 2, LCD_HEIGHT);
}
else
{
rb->lcd_fillrect(last_x + 1, 0, (LCD_WIDTH-1) - last_x, LCD_HEIGHT);
rb->lcd_fillrect(0, 0, cur_x + 2, LCD_HEIGHT);
}
rb->lcd_set_drawmode(DRMODE_SOLID);
switch (osc_mode)
{
case OSC_MODE_FILLED:
left = last_left;
right = last_right;
dl = (cur_left - left) / d;
dr = (cur_right - right) / d;
for (x = last_x + 1; d > 0; x++, d--)
{
if (x == LCD_WIDTH)
x = 0;
left += dl;
right += dr;
rb->lcd_vline(x, LCD_HEIGHT/2+1,
LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * left) >> 16));
rb->lcd_vline(x, LCD_HEIGHT/2-1,
LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * right) >> 16));
}
break;
case OSC_MODE_OUTLINE:
if (cur_x > last_x)
{
rb->lcd_drawline(
last_x, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * last_left) >> 16),
cur_x, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * cur_left) >> 16)
);
rb->lcd_drawline(
last_x, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * last_right) >> 16),
cur_x, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * cur_right) >> 16)
);
}
else
{
left = last_left
+ (LCD_WIDTH - last_x) * (last_left - cur_left) / d;
right = last_right
+ (LCD_WIDTH - last_x) * (last_right - cur_right) / d;
rb->lcd_drawline(
last_x, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * last_left) >> 16),
LCD_WIDTH, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * left) >> 16)
);
rb->lcd_drawline(
last_x, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * last_right) >> 16),
LCD_WIDTH, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * right) >> 16)
);
rb->lcd_drawline(
0, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * left) >> 16),
cur_x, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * cur_left) >> 16)
);
rb->lcd_drawline(
0, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * right) >> 16),
cur_x, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * cur_right) >> 16)
);
}
break;
case OSC_MODE_PIXEL:
left = last_left;
right = last_right;
dl = (cur_left - left) / d;
dr = (cur_right - right) / d;
for (x = last_x + 1; d > 0; x++, d--)
{
if (x == LCD_WIDTH)
x = 0;
left += dl;
right += dr;
rb->lcd_drawpixel(x, LCD_HEIGHT/2+1 + (((LCD_HEIGHT-2) * left) >> 16));
rb->lcd_drawpixel(x, LCD_HEIGHT/2-1 - (((LCD_HEIGHT-2) * right) >> 16));
}
break;
}
last_left = cur_left;
last_right = cur_right;
if (full_update)
{
rb->lcd_update();
}
else
{
if (cur_x > last_x)
{
rb->lcd_update_rect(last_x, 0, cur_x - last_x + 2, LCD_HEIGHT);
}
else
{
rb->lcd_update_rect(last_x, 0, (LCD_WIDTH-1) - last_x, LCD_HEIGHT);
rb->lcd_update_rect(0, 0, cur_x + 2, LCD_HEIGHT);
}
}
last_x = cur_x;
}
void cleanup(void *parameter)
{
(void)parameter;
#ifdef HAVE_LCD_COLOR
rb->lcd_set_foreground(LCD_DEFAULT_FG);
rb->lcd_set_background(LCD_DEFAULT_BG);
rb->backlight_set_timeout(rb->global_settings->backlight_timeout);
#endif
}
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int button, vol;
int lastbutton = BUTTON_NONE;
bool exit = false;
bool paused = false;
(void)parameter;
rb = api;
xlcd_init(rb);
#ifdef HAVE_LCD_COLOR
rb->lcd_set_foreground(LCD_RGBPACK(128, 255, 0));
rb->lcd_set_background(LCD_BLACK);
rb->lcd_clear_display();
rb->lcd_update();
rb->backlight_set_timeout(1); /* keep the light on */
#endif
while (!exit)
{
if (!paused)
{
int left, right;
rb->sleep(MAX(last_tick + osc_delay - *rb->current_tick - 1, 0));
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
left = rb->mas_codec_readreg(0xC);
right = rb->mas_codec_readreg(0xD);
#elif (CONFIG_CODEC == SWCODEC)
rb->pcm_calculate_peaks(&left, &right);
#endif
animate(left, right);
}
button = rb->button_get(paused);
switch (button)
{
case OSCILLOSCOPE_QUIT:
exit = true;
break;
case OSCILLOSCOPE_SCROLL:
osc_scroll = !osc_scroll;
break;
case OSCILLOSCOPE_MODE:
#ifdef OSCILLOSCOPE_MODE_PRE
if (lastbutton != OSCILLOSCOPE_MODE_PRE)
break;
#endif
if (++osc_mode >= OSC_MODE_COUNT)
osc_mode = 0;
break;
case OSCILLOSCOPE_PAUSE:
paused = !paused;
last_tick = 0;
break;
case OSCILLOSCOPE_SPEED_UP:
case OSCILLOSCOPE_SPEED_UP | BUTTON_REPEAT:
if (osc_delay > 1)
osc_delay--;
break;
case OSCILLOSCOPE_SPEED_DOWN:
case OSCILLOSCOPE_SPEED_DOWN | BUTTON_REPEAT:
osc_delay++;
break;
case OSCILLOSCOPE_VOL_UP:
case OSCILLOSCOPE_VOL_UP | BUTTON_REPEAT:
vol = rb->global_settings->volume;
if (vol < rb->sound_max(SOUND_VOLUME))
{
vol++;
rb->sound_set(SOUND_VOLUME, vol);
rb->global_settings->volume = vol;
}
break;
case OSCILLOSCOPE_VOL_DOWN:
case OSCILLOSCOPE_VOL_DOWN | BUTTON_REPEAT:
vol = rb->global_settings->volume;
if (vol > rb->sound_min(SOUND_VOLUME))
{
vol--;
rb->sound_set(SOUND_VOLUME, vol);
rb->global_settings->volume = vol;
}
break;
default:
if (rb->default_event_handler_ex(button, cleanup, NULL)
== SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
break;
}
if (button != BUTTON_NONE)
lastbutton = button;
}
cleanup(NULL);
return PLUGIN_OK;
}
#endif /* if HAVE_LCD_BITMAP */
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