/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 *
 * Copyright (C) 2006 Alexander Spyridakis, Hristo Kovachev
 *
 * 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.
 *
 ****************************************************************************/
#ifndef SIMULATOR /* not for the simulator */

#include "plugin.h"
PLUGIN_HEADER

#define BATTERY_LOG "/battery_bench.txt"
#define BUF_SIZE 16000
#define DISK_SPINDOWN_TIMEOUT 3600

#define EV_EXIT 1337

/* seems to work with 1300, but who knows... */ 
#define THREAD_STACK_SIZE DEFAULT_STACK_SIZE + 0x200 

#if CONFIG_KEYPAD == RECORDER_PAD
#define BATTERY_ON BUTTON_PLAY
#define BATTERY_OFF BUTTON_OFF

#elif CONFIG_KEYPAD == ONDIO_PAD
#define BATTERY_ON BUTTON_RIGHT
#define BATTERY_OFF BUTTON_OFF

#elif CONFIG_KEYPAD == PLAYER_PAD
#define BATTERY_ON BUTTON_ON
#define BATTERY_OFF BUTTON_STOP

#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
      (CONFIG_KEYPAD == IRIVER_H300_PAD)
      
#define BATTERY_ON BUTTON_ON
#define BATTERY_RC_ON BUTTON_RC_ON

#define BATTERY_OFF BUTTON_OFF
#define BATTERY_RC_OFF BUTTON_RC_STOP

#elif CONFIG_KEYPAD == IPOD_4G_PAD

#define BATTERY_ON  BUTTON_PLAY
#define BATTERY_OFF BUTTON_MENU

#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD

#define BATTERY_ON  BUTTON_SELECT
#define BATTERY_OFF BUTTON_PLAY

#endif


/****************************** Plugin Entry Point ****************************/
static struct plugin_api* rb;
int main(void);
void exit_tsr(void);
void thread(void);


enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
    (void)parameter;
    rb = api;
    
    return main();
}

struct 
{
    int id;
    bool ended;
} s_thread;

/* Struct for battery information */
struct batt_info
{
    int ticks, level, eta;
    unsigned int voltage;
} bat[BUF_SIZE/sizeof(struct batt_info)];

struct event_queue thread_q;

void exit_tsr(void)
{
    rb->queue_post(&thread_q, EV_EXIT, NULL);
    while (!s_thread.ended)
        rb->yield();
    /* remove the thread's queue from the broadcast list */
    rb->queue_delete(&thread_q);
}

#define BIT_CHARGER     0x1000
#define BIT_CHARGING    0x2000
#define BIT_USB_POWER   0x4000

#define HMS(x) (x)/3600,((x)%3600)/60,((x)%3600)%60 

/* use long for aligning */
unsigned long thread_stack[THREAD_STACK_SIZE/sizeof(long)];

#if defined(HAVE_CHARGING) || defined(HAVE_USB_POWER)
unsigned int charge_state(void)
{
    unsigned int ret = 0;
#ifdef HAVE_CHARGING
    if(rb->charger_inserted())
        ret = BIT_CHARGER;
#ifdef HAVE_CHARGE_STATE
    if(rb->charging_state())
        ret |= BIT_CHARGING;
#endif
#endif
#ifdef HAVE_USB_POWER
    if(rb->usb_powered())
        ret |= BIT_USB_POWER;
#endif
    return ret; 
}
#endif

void thread(void)
{
    bool got_info = false, timeflag = false, in_usb_mode = false;
    int fd, buffelements, tick = 1, i = 0, skipped = 0, exit = 0;
    int fst = 0, lst = 0; /* first and last skipped tick */
    unsigned int last_voltage = 0;
#if  defined(HAVE_CHARGING) || defined(HAVE_USB_POWER) 
    unsigned int last_state = 0;
#endif    
    long sleep_time;
    
    struct event ev;

    buffelements = sizeof(bat)/sizeof(struct batt_info);

    sleep_time = (rb->global_settings->disk_spindown > 1) ?
        (rb->global_settings->disk_spindown - 1) * HZ : 5 * HZ;
    
    do
    {
        if(!in_usb_mode && got_info && 
            (exit || timeflag || rb->ata_disk_is_active()) )
        {
            int last, secs, j, temp = skipped;
            
            fd = rb->open(BATTERY_LOG, O_RDWR | O_CREAT | O_APPEND);
            if(fd < 0)
                exit = 1;
            else
            {
               do
                {
                    if(skipped)
                    {
                        last = buffelements;
                        fst /= HZ;
                        lst /= HZ;
                        rb->fdprintf(fd,"-Skipped %d measurements from "
                            "%02d:%02d:%02d to %02d:%02d:%02d-\n",skipped,
                            HMS(fst),HMS(lst));
                        skipped = 0;
                    }
                    else
                    {
                        last = i;
                        i = 0;
                    }

                    for(j = i; j < last; j++)
                    {
                         secs = bat[j].ticks/HZ;
                         rb->fdprintf(fd,
                                "%02d:%02d:%02d,  %05d,     %03d%%,     "
                                "%02d:%02d,           %04d,     %04d"
#ifdef HAVE_CHARGING
                                ",  %c"
#ifdef HAVE_CHARGE_STATE
                                ",  %c"
#endif
#endif
#ifdef HAVE_USB_POWER
                                ",  %c"
#endif
                                "\n",
                                
                                HMS(secs), secs, bat[j].level,
                                bat[j].eta / 60, bat[j].eta % 60, 
#if defined(HAVE_CHARGING) || defined(HAVE_USB_POWER)
                                (bat[j].voltage & 
                                 (~(BIT_CHARGER|BIT_CHARGING|BIT_USB_POWER)))
                                *10,
#else
                                bat[j].voltage * 10,
#endif
                                temp + 1 + (j-i)
#ifdef HAVE_CHARGING
                                ,(bat[j].voltage & BIT_CHARGER)?'A':'-' 
#ifdef HAVE_CHARGE_STATE
                                ,(bat[j].voltage & BIT_CHARGING)?'C':'-'
#endif
#endif
#ifdef HAVE_USB_POWER
                                ,(bat[j].voltage & BIT_USB_POWER)?'U':'-'
#endif
                                        
                                        );
                         if(!j % 100 && !j) /* yield() at every 100 writes */
                            rb->yield();
                    }
                    temp += j - i;
 
                }while(i != 0);
           
                rb->close(fd);
                tick = *rb->current_tick;
                got_info = false;
                timeflag = false;
            }
        }
        else
        {            
            unsigned int current_voltage;
            if(
#if CONFIG_CODEC == SWCODEC                
                !rb->pcm_is_playing()
#else
                !rb->mp3_is_playing()
#endif                
                && (*rb->current_tick - tick) > DISK_SPINDOWN_TIMEOUT * HZ)
                timeflag = true;
            
            if(last_voltage != (current_voltage=rb->battery_voltage())
#if defined(HAVE_CHARGING) || defined(HAVE_USB_POWER)
                || last_state != charge_state()
#endif
                            )
            {
                if(i == buffelements)
                {
                    if(!skipped++)
                        fst = bat[0].ticks;
                    i = 0;
                } 
                else if(skipped)
                {
                        skipped++;
                        lst = bat[i].ticks;
                }
                bat[i].ticks = *rb->current_tick;
                bat[i].level = rb->battery_level();
                bat[i].eta = rb->battery_time();
                last_voltage = bat[i].voltage = current_voltage;
#if defined(HAVE_CHARGING) || defined(HAVE_USB_POWER)
                bat[i].voltage |= last_state = charge_state();
#endif                
                i++;
                got_info = true;
            }            
 
       }
        
        if(exit)
        {
            if(exit == 2)
                    rb->splash(HZ,true,
#ifdef HAVE_LCD_BITMAP                                    
                        "Exiting battery_bench...");
#else
                        "bench exit");
#endif                        
            s_thread.ended = true;
            rb->remove_thread(s_thread.id);
            rb->yield(); /* exit the thread, this yield() won't return */
        }
        
        rb->queue_wait_w_tmo(&thread_q, &ev, sleep_time);
        switch (ev.id)
        {
            case SYS_USB_CONNECTED: 
                in_usb_mode = true;
                rb->usb_acknowledge(SYS_USB_CONNECTED_ACK);
                break;
            case SYS_USB_DISCONNECTED:
                in_usb_mode = false;
                rb->usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
                break;
            case SYS_POWEROFF:
                exit = 1;
                break;
            case EV_EXIT:
                exit = 2;
                break;
        }
    } while (1);
    
}


#ifdef HAVE_LCD_BITMAP
typedef void (*plcdfunc)(int x, int y, const unsigned char *str);

void put_centered_str(const char* str, plcdfunc putsxy, int lcd_width, int line)
{
    int strwdt, strhgt;
    rb->lcd_getstringsize(str, &strwdt, &strhgt);
    putsxy((lcd_width - strwdt)/2, line*(strhgt), str);
}
#endif

int main(void)
{
    int button, fd;
    bool on = false;
#ifdef HAVE_LCD_BITMAP
    const char *msgs[] = { "Battery Benchmark","Check file", BATTERY_LOG,
            "for more info", "PLAY - start", "OFF  - quit" };
#endif    
    rb->lcd_clear_display();

#ifdef HAVE_LCD_BITMAP
    int i;
    
    rb->lcd_clear_display();
    rb->lcd_setfont(FONT_SYSFIXED);

    for(i = 0; i<(int)(sizeof(msgs)/sizeof(char *)); i++)
        put_centered_str(msgs[i],rb->lcd_putsxy,LCD_WIDTH,i+1);
    
    rb->lcd_update();
#ifdef HAVE_REMOTE_LCD
    rb->lcd_remote_clear_display();
    put_centered_str(msgs[0],rb->lcd_remote_putsxy,LCD_REMOTE_WIDTH,0);
    put_centered_str(msgs[sizeof(msgs)/sizeof(char*)-2],
                    rb->lcd_remote_putsxy,LCD_REMOTE_WIDTH,1);
    put_centered_str(msgs[sizeof(msgs)/sizeof(char*)-1],
                    rb->lcd_remote_putsxy,LCD_REMOTE_WIDTH,2);
    rb->lcd_remote_update();
#endif
    
#else
    rb->lcd_puts_scroll(0, 1, "Batt.Bench.");
    rb->lcd_puts_scroll(0, 2, "PLAY/STOP");
#endif
    
    do
    {
        button = rb->button_get(true);
        switch(button)
        {
            case BATTERY_ON:
#ifdef BATTERY_RC_ON
            case BATTERY_RC_ON:
#endif                         
                on = true;
                break;        
            case BATTERY_OFF: 
#ifdef BATTERY_RC_OFF
            case BATTERY_RC_OFF:
#endif                        
                return PLUGIN_OK;
                
            default: if(rb->default_event_handler(button) == SYS_USB_CONNECTED)
                    return PLUGIN_USB_CONNECTED;
        }
    }while(!on);
    
    fd = rb->open(BATTERY_LOG, O_RDONLY);
    if(fd < 0)
    {
        fd = rb->open(BATTERY_LOG, O_RDWR | O_CREAT);
        if(fd >= 0)
        {
            rb->fdprintf(fd,
                "This plugin will log your battery performance in a\n"
                "file (%s) every time the disk is accessed (or every hour).\n"
                "To properly test your battery:\n"
                "1) Select and playback an album. "
                "(Be sure to be more than the player's buffer)\n"
                "2) Set to repeat.\n"
                "3) Let the player run completely out of battery.\n"
                "4) Recharge and copy (or whatever you want) the txt file to "
                "your computer.\n"
                "Now you can make graphs with the data of the battery log.\n"
                "Do not enter another plugin during the test or else the "
                "logging activity will end.\n\n"
                "P.S: You can decide how you will make your tests.\n"
                "Just don't open another  plugin to be sure that your log "
                "will continue.\n"
                "M/DA (Measurements per Disk Activity) shows how many times\n"
                "data was logged in the buffer between Disk Activity.\n\n"
                "Battery type: %d mAh      Buffer Entries: %d\n"
                "  Time:,  Seconds:,  Level:,  Time Left:,  Voltage[mV]:,"
                "  M/DA:"
#ifdef HAVE_CHARGING
                ", C:"
#endif
#ifdef HAVE_CHARGE_STATE
                ", S:"
#endif
#ifdef HAVE_USB_POWER
                ", U:"
#endif
                "\n"
                ,BATTERY_LOG,rb->global_settings->battery_capacity,
                BUF_SIZE / sizeof(struct batt_info));
            rb->close(fd);
        }
        else
        {
            rb->splash(HZ / 2, true, "Cannot create file!");
            return PLUGIN_ERROR;
        }
    }
    else
    {
        rb->close(fd);
        fd = rb->open(BATTERY_LOG, O_RDWR | O_APPEND);
        rb->fdprintf(fd, "\n--File already present. Resuming Benchmark--\n");
        rb->close(fd);
    }
    
    rb->queue_init(&thread_q); /* put the thread's queue in the bcast list */
    rb->memset(&s_thread, 0, sizeof(s_thread)); /* zero the struct */
    s_thread.id = rb->create_thread(thread, thread_stack,
        sizeof(thread_stack), "Battery Benchmark");
    rb->plugin_tsr(exit_tsr);
    
    return PLUGIN_OK;
}

#endif