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rockbox/apps/plugins/vu_meter.c
Jörg Hohensohn 239b70fad3 patch #908634 applied 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4413 a1c6a512-1295-4272-9138-f99709370657
2004-03-19 22:15:52 +00:00

527 lines
17 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2003 Lee Pilgrim
*
* 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.
*
**************************************************************************/
/******************************************************
* Quick note: throughout this code you'll see
* comments like this one, inside of a box. They are
* used to indicate new functions, not because I
* think you're blind. Only here to help.
******************************************************/
#include "plugin.h"
#ifdef HAVE_LCD_BITMAP
static struct plugin_api* rb;
/* This table is used to define x positions on a logarithmic (dBfs) scale.
There are 112 of them, one for each pixel.
The formula I used to figure these out was log(x)*32.09,
where x was the original x position. */
static unsigned char db_scale[] = {0,0,10,15,19,22,25,27,29,31,32,33,35,36,37,38,39,39,40,41,42,42,
43,44,44,45,45,46,46,47,47,48,48,49,49,50,50,50,51,51,51,52,52,
52,53,53,53,54,54,54,55,55,55,55,56,56,56,56,56,66, 71,75,78,81,
83,85,87,88,89,91,92,93,94,95,95,96,97,98,98,99,100,100,101,101,
102,102,103,103,104,104,105,105,106,106,106,107,107,107,108,108,
108,109,109,109,110,110,110,111,111,111,111,112,112,112};
/* Define's y positions, and makes it look like an arch, like a real needle would. */
static unsigned char y_values[] = {32,31,30,29,28,27,26,25,24,24,23,22,22,21,21,20,19,19,18,18,18,18,18,17,17,17,17,17,
17,17,17,17,17,18,18,18,18,18,19,19,20,21,21,22,22,23,24,24,25,26,27,28,29,30,31,32,
32,31,30,29,28,27,26,25,24,24,23,22,22,21,21,20,19,19,18,18,18,18,18,17,17,17,17,17,
17,17,17,17,17,18,18,18,18,18,19,19,20,21,21,22,22,23,24,24,25,26,27,28,29,30,31,32};
/***************************************************
* LCD Bitmaps/Icons
***************************************************/
/* Linear mode bitmap icon. */
unsigned char mode_linear[] = {0xDF,0x10,0xD0,0x00,0xDF,0x00,0xDF,0x02,0xC4,0x08,0xDF,
0x00,0xDF,0x15,0xD1,0x00,0xDE,0x05,0xDE,0x00,0xDF,0x05,
0xDA};
/* Logarithmic (dBfs) mode bitmap icon. */
unsigned char mode_dbfs[] = {0xC8,0x14,0x14,0x1F,0x00,0xDF,0x15,0x15,0x0A,0xC0,0x1E,
0x05,0x05,0xC0,0x16,0x15,0xD5,0x09,0xC0,0x00,0xF0,0x00,
0xFE};
/* Channel indicator - no level [4x8] */
static unsigned char sound_speaker[] = {0x18,0x24,0x42,0xFF};
/* Channel indicator - low level [2x8] */
static unsigned char sound_low_level[] = {0x24,0x18};
/* Channel indicator - medium level [2x8] */
static unsigned char sound_med_level[] = {0x42,0x3C};
/* Channel indicator - high level [2x8] */
static unsigned char sound_high_level[] = {0x81,0x7E};
/* Channel indicator - maxed out [3x8] */
static unsigned char sound_max_level[] = {0x0E,0xDF,0x0E};
/* Volume level icon [4x7] */
static unsigned char volume_indicator[] = {0x1C,0x1C,0x22,0x7F};
/* RIGHT ARROW icon (from icons.c) [7x8] */
static unsigned char right_arrow[] = {0x7F,0x3E,0x1C,0x7F,0x3E,0x1C,0x08};
/* LEFT ARROW icon (from icons.c) [7x8] */
static unsigned char left_arrow[] = {0x08,0x1C,0x3E,0x7F,0x1C,0x3E,0x7F};
/*************************
* DEFINES
*************************/
#define MAX_PEAK 0x7FFF
#define NEEDLE_BOTTOM_Y 54
/******************************
* LEFT NEEDLE ints
******************************/
#define LEFT_NEEDLE_BOTTOM_X 28
int left_needle_top_y;
int left_needle_top_x;
int old_left_needle_top_x = 0;
int left_needle_top_x_no_log;
/*******************************
* RIGHT NEEDLE ints
*******************************/
#define RIGHT_NEEDLE_BOTTOM_X 84
int right_needle_top_y;
int right_needle_top_x;
int old_right_needle_top_x = 56;
int right_needle_top_x_no_log;
/*********************
* LEFT MINIMETER ints
*********************/
int mini_left_low;
int mini_left_med;
int mini_left_high;
int mini_left_clip;
/**********************
* RIGHT MINIMETER ints
**********************/
int mini_right_low;
int mini_right_med;
int mini_right_high;
int mini_right_clip;
/************************
* GENERAL ints
************************/
char curr_vol[3]; /* CURRENT VOLUME */
int vol; /* CURENNT VOLUME int */
int on = 1; /* MINIMETER OPTIONS int */
int needle_cover_mode = 1; /* NEEDLE COVER int (defaults to "rounded") */
int arch = 1; /* ARCH int (defaults to "solid") */
int decay = 3; /* DECAY int (defaults to "medium") */
/*************************
* GENERAL bools
*************************/
bool quit = false;
bool use_log_scale = true;
bool use_minimeters = true;
/********************************************
* Change the volume - derived from VIDEO.C
********************************************/
void ChangeVolume(int delta)
{
vol = rb->global_settings->volume + delta;
if (vol > 100) vol = 100;
else if (vol < 0) vol = 0;
if (vol != rb->global_settings->volume)
{
rb->mpeg_sound_set(SOUND_VOLUME, vol);
rb->global_settings->volume = vol;
rb->snprintf(curr_vol, sizeof(curr_vol), "%d", vol);
}
}
/*****************************************************
* Draw the status bar
*****************************************************/
void draw_status_bar(void)
{
rb->lcd_setfont(FONT_SYSFIXED);
rb->lcd_drawline(0, 10, 112, 10);
rb->lcd_putsxy(1, 1, "VU Meter");
rb->lcd_drawline(52, 1, 52, 8);
rb->lcd_bitmap(volume_indicator, 60, 1, 4, 7, true);
rb->lcd_putsxy(65, 1, curr_vol);
rb->lcd_drawline(85, 1, 85, 8);
if(use_log_scale)
rb->lcd_bitmap(mode_dbfs, 88, 1, 23, 8, true);
else
rb->lcd_bitmap(mode_linear, 88, 1, 23, 8, true);
/* The last line under the needle covers. */
rb->lcd_drawline(0, 54, 111, 54);
rb->lcd_update_rect(0, 0, 112, 10);
}
/******************************
* DRAW left MiniMeters
******************************/
void draw_left_minimeters(void)
{
rb->lcd_bitmap(sound_speaker, 22, 56, 4, 8, true);
if(5<left_needle_top_x_no_log)
rb->lcd_bitmap(sound_low_level, 27, 56, 2, 8, false);
if(12<left_needle_top_x_no_log)
rb->lcd_bitmap(sound_med_level, 30, 56, 2, 8, false);
if(24<left_needle_top_x_no_log)
rb->lcd_bitmap(sound_high_level, 33, 56, 2, 8, false);
if(40<left_needle_top_x_no_log)
rb->lcd_bitmap(sound_max_level, 36, 56, 3, 8, false);
}
/*******************************
* DRAW right MiniMeters
*******************************/
void draw_right_minimeters(void)
{
rb->lcd_bitmap(sound_speaker, 79, 56, 4, 8, true);
if(5<(right_needle_top_x_no_log-56))
rb->lcd_bitmap(sound_low_level, 84, 56, 2, 8, false);
if(12<(right_needle_top_x_no_log-56))
rb->lcd_bitmap(sound_med_level, 87, 56, 2, 8, false);
if(24<(right_needle_top_x_no_log-56))
rb->lcd_bitmap(sound_high_level, 90, 56, 2, 8, false);
if(40<(right_needle_top_x_no_log-56))
rb->lcd_bitmap(sound_max_level, 93, 56, 3, 8, false);
}
/***************************************
* GENERAL SETTINGS - F1
***************************************/
void general_settings(void)
{
char buf[15];
int w, h;
while(!quit)
{
rb->lcd_clear_display();
/* Left hand side (needle covers) */
rb->lcd_putsxy(0, 15, "Needle");
rb->lcd_putsxy(0, 23, "Covers:");
if(needle_cover_mode == 1)
rb->lcd_putsxy(0, 32, "Rounded");
else
rb->lcd_putsxy(0, 32, "Pyramid");
rb->lcd_bitmap(left_arrow, 43, 23, 7, 8, true);
/* Right hand side (visible arch) */
rb->snprintf(buf, sizeof(buf), "Visible");
rb->lcd_getstringsize(buf, &w, &h);
rb->lcd_putsxy(LCD_WIDTH-w, 15, buf);
rb->snprintf(buf, sizeof(buf), "Arch:");
rb->lcd_getstringsize(buf, &w, &h);
rb->lcd_putsxy(LCD_WIDTH-w, 23, buf);
rb->lcd_bitmap(right_arrow, 62, 23, 7, 8, true);
if(arch == 1)
{
rb->snprintf(buf, sizeof(buf), "Solid");
rb->lcd_getstringsize(buf, &w, &h);
rb->lcd_putsxy(LCD_WIDTH-w, 32, buf);
}
else if(arch == 2)
{
rb->snprintf(buf, sizeof(buf), "Dotted");
rb->lcd_getstringsize(buf, &w, &h);
rb->lcd_putsxy(LCD_WIDTH-w, 32, buf);
}
else
{
rb->snprintf(buf, sizeof(buf), "Off");
rb->lcd_getstringsize(buf, &w, &h);
rb->lcd_putsxy(LCD_WIDTH-w, 32, buf);
}
rb->lcd_update();
switch(rb->button_get_w_tmo(HZ/4))
{
case BUTTON_F1:
case BUTTON_OFF:
quit = true;
break;
case BUTTON_RIGHT:
arch==3 ? arch=1 : arch++;
break;
case BUTTON_LEFT:
needle_cover_mode==2 ? needle_cover_mode=1 : needle_cover_mode++;
break;
}
}
}
/*****************************
* User Decay settings
*****************************/
void user_decay_settings(void)
{
while(!quit)
{
rb->lcd_clear_display();
rb->lcd_putsxy(2, 0, "User Decay Options");
rb->lcd_putsxy(5, 15, "Release Speed:");
switch(decay)
{
case 0: rb->lcd_putsxy(5, 23, "No Decay"); break;
case 1: rb->lcd_putsxy(5, 23, "Very Fast"); break;
case 2: rb->lcd_putsxy(5, 23, "Fast"); break;
case 3: rb->lcd_putsxy(5, 23, "Medium"); break;
case 4: rb->lcd_putsxy(5, 23, "Medium-Slow"); break;
case 5: rb->lcd_putsxy(5, 23, "Slow"); break;
case 6: rb->lcd_putsxy(5, 23, "Very Slow"); break;
default: break;
}
rb->lcd_putsxy(2, 48, "UP/DOWN: Change");
rb->lcd_putsxy(2, 56, "OFF/F2: Back to VU");
rb->lcd_update();
switch(rb->button_get_w_tmo(HZ/4))
{
case BUTTON_F2:
case BUTTON_OFF:
quit = true;
break;
case BUTTON_DOWN:
decay == 6 ? decay = 0 : decay++;
break;
case BUTTON_UP:
decay == 0 ? decay = 6 : decay--;
break;
}
}
}
/***********************************************************************
* PLUGIN STARTS HERE
***********************************************************************/
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
TEST_PLUGIN_API(api);
(void) parameter;
rb = api;
/* Calculate the volume right away */
vol = rb->global_settings->volume;
rb->snprintf(curr_vol, sizeof(curr_vol), "%d", vol);
rb->splash(HZ*2, true, "Press [ON] for help");
while (!PLUGIN_OK)
{
quit = false;
#ifdef SIMULATOR
left_needle_top_x_no_log = rb->rand()%56;
right_needle_top_x_no_log = (rb->rand()%56)+56;
#else
left_needle_top_x_no_log =
(rb->mas_codec_readreg(0xC) * 56 / MAX_PEAK);
right_needle_top_x_no_log =
(rb->mas_codec_readreg(0xD) * 56 / MAX_PEAK) + 56;
#endif
rb->lcd_clear_display();
if (use_log_scale)
{
left_needle_top_x = db_scale[left_needle_top_x_no_log];
right_needle_top_x = db_scale[right_needle_top_x_no_log];
}
else
{
left_needle_top_x = left_needle_top_x_no_log;
right_needle_top_x = right_needle_top_x_no_log;
}
/* Makes a decay on the needle (Custom Decay is at F2) */
left_needle_top_x = (left_needle_top_x+old_left_needle_top_x*decay)/(decay+1);
right_needle_top_x = (right_needle_top_x+old_right_needle_top_x*decay)/(decay+1);
old_left_needle_top_x = left_needle_top_x;
old_right_needle_top_x = right_needle_top_x;
left_needle_top_y = y_values[left_needle_top_x];
right_needle_top_y = y_values[right_needle_top_x];
/* Draws the needles */
rb->lcd_drawline(LEFT_NEEDLE_BOTTOM_X, NEEDLE_BOTTOM_Y,
left_needle_top_x, left_needle_top_y);
rb->lcd_drawline(RIGHT_NEEDLE_BOTTOM_X, NEEDLE_BOTTOM_Y,
right_needle_top_x, right_needle_top_y);
/* We've got four needle cover modes... */
if(needle_cover_mode == 1) /* Rounded needle cover. */
{
/* Left needle cover, top to bottom */
rb->lcd_drawline(27, 49, 29, 49);
rb->lcd_drawline(25, 50, 31, 50);
rb->lcd_drawline(23, 51, 33, 51);
rb->lcd_drawline(22, 52, 34, 52);
rb->lcd_drawline(22, 53, 34, 53);
/* Right needle cover, top to bottom */
rb->lcd_drawline(83, 49, 85, 49);
rb->lcd_drawline(81, 50, 87, 50);
rb->lcd_drawline(79, 51, 89, 51);
rb->lcd_drawline(78, 52, 90, 52);
rb->lcd_drawline(78, 53, 90, 53);
}
else /* Pyramid needle cover. */
{
/* Left needle cover, top to bottom */
rb->lcd_drawpixel(28, 49);
rb->lcd_drawline(27, 50, 29, 50);
rb->lcd_drawline(26, 51, 30, 51);
rb->lcd_drawline(25, 52, 31, 52);
rb->lcd_drawline(24, 53, 32, 53);
/* Right needle cover, top to bottom */
rb->lcd_drawpixel(84, 49);
rb->lcd_drawline(83, 50, 85, 50);
rb->lcd_drawline(82, 51, 86, 51);
rb->lcd_drawline(81, 52, 87, 52);
rb->lcd_drawline(80, 53, 88, 53);
}
if(arch == 1) /* Solid */
{
int i;
for(i=0; i<=112; i++)
rb->lcd_drawpixel(i, (y_values[i])-2 );
}
else if(arch == 2) /* Dotted */
{
int i;
for(i=0; i<=112; i+=2)
rb->lcd_drawpixel(i, y_values[i]);
}
if(use_minimeters)
{
draw_left_minimeters();
draw_right_minimeters();
}
draw_status_bar();
rb->lcd_update();
/* Using a faster timeout like "1" makes the
* minimeters flicker, HZ/35 looks good. */
switch (rb->button_get_w_tmo(HZ/35))
{
/* EXIT */
case BUTTON_OFF:
return PLUGIN_OK;
break;
/* INFO */
case BUTTON_ON:
rb->lcd_clear_display();
while(!quit)
{
rb->lcd_puts(0, 0, "OFF: Exit Plugin");
rb->lcd_puts(0, 1, "PLAY: Change Scale");
rb->lcd_puts(0, 2, "F1: Settings");
rb->lcd_puts(0, 3, "F2: Custom Decay");
rb->lcd_puts(0, 4, "F3: Mini-Meters");
rb->lcd_puts(0, 5, "UP/DOWN: Volume");
rb->lcd_puts(0, 7, "ON to exit...");
rb->lcd_update();
switch(rb->button_get_w_tmo(HZ/4))
{
case BUTTON_ON:
quit = true;
break;
}
}
break;
/* SCALE switch */
case BUTTON_PLAY:
use_log_scale = !use_log_scale;
break;
/* GENERAL SETTINGS screen */
case BUTTON_F1:
general_settings();
break;
/* DECAY SETTINGS screen */
case BUTTON_F2:
user_decay_settings();
break;
/* MINIMETER SETTINGS screen */
case BUTTON_F3:
use_minimeters = !use_minimeters;
break;
/* VOLUME UP */
case BUTTON_UP:
case BUTTON_UP | BUTTON_REPEAT:
ChangeVolume(1);
break;
/* VOLUME DOWN */
case BUTTON_DOWN:
case BUTTON_DOWN | BUTTON_REPEAT:
ChangeVolume(-1);
break;
/* USB CONNECTED */
case SYS_USB_CONNECTED:
rb->usb_screen();
return PLUGIN_USB_CONNECTED;
break;
}
}
}
#endif /* #ifdef HAVE_LCD_BITMAP */
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