wps.c

编译后直接运行的ＭＰ３播放器全部Ｃ语言源代码 一个包含FAT文件系统、系统引导 Boot、FLASH Driver等内容的

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id: wps.c,v 1.204 2004/01/15 23:05:13 zagor Exp $
 *
 * Copyright (C) 2002 Jerome Kuptz
 *
 * 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 <stdio.h>
#include <string.h>
#include <stdlib.h>

#include "file.h"
#include "lcd.h"
#include "font.h"
#include "backlight.h"
#include "button.h"
#include "kernel.h"
#include "tree.h"
#include "debug.h"
#include "sprintf.h"
#include "settings.h"
#include "wps.h"
#include "wps-display.h"
#include "mpeg.h"
#include "mp3_playback.h"
#include "usb.h"
#include "status.h"
#include "main_menu.h"
#include "ata.h"
#include "screens.h"
#include "playlist.h"
#ifdef HAVE_LCD_BITMAP
#include "icons.h"
#include "peakmeter.h"
#endif
#include "lang.h"
#include "bookmark.h"
#define FF_REWIND_MAX_PERCENT 3 /* cap ff/rewind step size at max % of file */ 
                                /* 3% of 30min file == 54s step size */

bool keys_locked = false;
static bool ff_rewind = false;
static bool paused = false;
static struct mp3entry* id3 = NULL;
static char current_track_path[MAX_PATH+1];

#if defined(HAVE_PLAYER_KEYPAD) || defined(HAVE_NEO_KEYPAD)
void player_change_volume(int button)
{
    bool exit = false;
    char buffer[32];

    lcd_stop_scroll();
    while (!exit)
    {
        switch (button)
        {
            case BUTTON_MENU | BUTTON_RIGHT:
            case BUTTON_MENU | BUTTON_RIGHT | BUTTON_REPEAT:
                global_settings.volume++;
                if(global_settings.volume > mpeg_sound_max(SOUND_VOLUME))
                    global_settings.volume = mpeg_sound_max(SOUND_VOLUME);
                mpeg_sound_set(SOUND_VOLUME, global_settings.volume);
                wps_refresh(id3, 0, WPS_REFRESH_NON_STATIC);
                settings_save();
                break;

            case BUTTON_MENU | BUTTON_LEFT:
            case BUTTON_MENU | BUTTON_LEFT | BUTTON_REPEAT:
                global_settings.volume--;
                if(global_settings.volume < mpeg_sound_min(SOUND_VOLUME))
                    global_settings.volume = mpeg_sound_min(SOUND_VOLUME);
                mpeg_sound_set(SOUND_VOLUME, global_settings.volume);
                wps_refresh(id3, 0, WPS_REFRESH_NON_STATIC);
                settings_save();
                break;

            case BUTTON_MENU | BUTTON_REL:
            case BUTTON_MENU | BUTTON_LEFT | BUTTON_REL:
            case BUTTON_MENU | BUTTON_RIGHT | BUTTON_REL:
                exit = true;
                break;
        }

        snprintf(buffer,sizeof(buffer),"Vol: %d %%       ", 
                 mpeg_val2phys(SOUND_VOLUME, global_settings.volume));

#ifdef HAVE_LCD_CHARCELLS
        lcd_puts(0, 0, buffer);
#else
        lcd_puts(2, 3, buffer);
        lcd_update();
#endif
        status_draw(false);

        if (!exit)
            button = button_get(true);
    }
    wps_refresh(id3,0, WPS_REFRESH_ALL);
}
#endif

void display_keylock_text(bool locked)
{
    char* s;
    lcd_stop_scroll();
#ifdef HAVE_LCD_CHARCELLS
    if(locked)
        s = str(LANG_KEYLOCK_ON_PLAYER);
    else
        s = str(LANG_KEYLOCK_OFF_PLAYER);
#else
    if(locked)
        s = str(LANG_KEYLOCK_ON_RECORDER);
    else
        s = str(LANG_KEYLOCK_OFF_RECORDER);
#endif
    splash(HZ, true, s);
}

void display_mute_text(bool muted)
{
    lcd_clear_display();

#ifdef HAVE_LCD_CHARCELLS
    if (muted)
        lcd_puts(0, 0, str(LANG_MUTE_ON_PLAYER));
    else
        lcd_puts(0, 0, str(LANG_MUTE_OFF_PLAYER));
#else
    if (muted)
        lcd_puts(2, 3, str(LANG_MUTE_ON_RECORDER));
    else
        lcd_puts(2, 3, str(LANG_MUTE_OFF_RECORDER));
    lcd_update();
#endif
    
    sleep(HZ);
}

bool browse_id3(void)
{
    int button;
    int menu_pos = 0;
    int menu_max = 8;
    bool exit = false;
    char scroll_text[MAX_PATH];

    if (!(mpeg_status() & MPEG_STATUS_PLAY))
        return false;

    while (!exit)
    {
        lcd_clear_display();

        switch (menu_pos)
        {
            case 0:
                lcd_puts(0, 0, str(LANG_ID3_TITLE));
                lcd_puts_scroll(0, 1, id3->title ? id3->title : 
                                (char*)str(LANG_ID3_NO_TITLE));
                break;

            case 1:
                lcd_puts(0, 0, str(LANG_ID3_ARTIST));
                lcd_puts_scroll(0, 1, 
                                id3->artist ? id3->artist : 
                                (char*)str(LANG_ID3_NO_ARTIST));
                break;

            case 2:
                lcd_puts(0, 0, str(LANG_ID3_ALBUM));
                lcd_puts_scroll(0, 1, id3->album ? id3->album : 
                                (char*)str(LANG_ID3_NO_ALBUM));
                break;

            case 3:
                lcd_puts(0, 0, str(LANG_ID3_TRACKNUM));
                
                if (id3->tracknum) {
                    snprintf(scroll_text,sizeof(scroll_text), "%d",
                             id3->tracknum);
                    lcd_puts_scroll(0, 1, scroll_text);
                }
                else
                    lcd_puts_scroll(0, 1, str(LANG_ID3_NO_TRACKNUM));
                break;

            case 4:
                lcd_puts(0, 0, str(LANG_ID3_GENRE));
                lcd_puts_scroll(0, 1,
                                wps_get_genre(id3->genre) ?
                                wps_get_genre(id3->genre) :
                                (char*)str(LANG_ID3_NO_INFO));
                break;

            case 5:
                lcd_puts(0, 0, str(LANG_ID3_YEAR));
                if (id3->year) {
                    snprintf(scroll_text,sizeof(scroll_text), "%d",
                             id3->year);
                    lcd_puts_scroll(0, 1, scroll_text);
                }
                else
                    lcd_puts_scroll(0, 1, str(LANG_ID3_NO_INFO));
                break;

            case 6:
                lcd_puts(0, 0, str(LANG_ID3_LENGHT));
                snprintf(scroll_text,sizeof(scroll_text), "%d:%02d",
                         id3->length / 60000,
                         id3->length % 60000 / 1000 );
                lcd_puts(0, 1, scroll_text);
                break;

            case 7:
                lcd_puts(0, 0, str(LANG_ID3_PLAYLIST));
                snprintf(scroll_text,sizeof(scroll_text), "%d/%d",
                         playlist_get_display_index(), playlist_amount());
                lcd_puts_scroll(0, 1, scroll_text);
                break;


            case 8:
                lcd_puts(0, 0, str(LANG_ID3_BITRATE));
                snprintf(scroll_text,sizeof(scroll_text), "%d kbps", 
                         id3->bitrate);
                lcd_puts(0, 1, scroll_text);
                break;

            case 9:
                lcd_puts(0, 0, str(LANG_ID3_FRECUENCY));
                snprintf(scroll_text,sizeof(scroll_text), "%d Hz",
                         id3->frequency);
                lcd_puts(0, 1, scroll_text);
                break;

            case 10:
                lcd_puts(0, 0, str(LANG_ID3_PATH));
                lcd_puts_scroll(0, 1, id3->path);
                break;
        }
        lcd_update();

        button = button_get(true);

        switch(button)
        {
            case BUTTON_LEFT:
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_UP:
#endif
                if (menu_pos > 0)
                    menu_pos--;
                else
                    menu_pos = menu_max;
                break;

            case BUTTON_RIGHT:
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_DOWN:
#endif
                if (menu_pos < menu_max)
                    menu_pos++;
                else
                    menu_pos = 0;
                break;
            
            case BUTTON_REPEAT:
                break;

#ifdef BUTTON_STOP
            case BUTTON_STOP:
#else
            case BUTTON_OFF:
#endif
            case BUTTON_PLAY:
                lcd_stop_scroll();
                /* eat release event */
                button_get(true);
                exit = true;
                break;

            case SYS_USB_CONNECTED: 
                status_set_playmode(STATUS_STOP);
                usb_screen();
                return true;
                break;
        }
    }
    return false;
}

static bool ffwd_rew(int button)
{
    static int ff_rew_steps[] = {
      1000, 2000, 3000, 4000,
      5000, 6000, 8000, 10000,
      15000, 20000, 25000, 30000,
      45000, 60000
    };

    unsigned int step = 0;     /* current ff/rewind step */ 
    unsigned int max_step = 0; /* maximum ff/rewind step */ 
    int ff_rewind_count = 0;   /* current ff/rewind count (in ticks) */
    int direction = 1;         /* forward=1 or backward=-1 */
    long accel_tick = 0;       /* next time at which to bump the step size */
    bool exit = false;
    bool usb = false;

    while (!exit) {
        switch ( button ) {
            case BUTTON_LEFT | BUTTON_REPEAT:
            case BUTTON_RIGHT | BUTTON_REPEAT:
                if (ff_rewind)
                {
                    ff_rewind_count += step * direction;

                    if (global_settings.ff_rewind_accel != 0 && 
                        current_tick >= accel_tick)
                    { 
                        step *= 2;
                        if (step > max_step)
                            step = max_step;

                        accel_tick = current_tick +
                            global_settings.ff_rewind_accel*HZ; 
                    } 
                }
                else
                {
                    if ( (mpeg_status() & MPEG_STATUS_PLAY) &&
                          id3 && id3->length )
                    {
                        if (!paused)
                            mpeg_pause();
#ifdef HAVE_PLAYER_KEYPAD
                        lcd_stop_scroll();
#endif
                        direction = (button & BUTTON_RIGHT) ? 1 : -1;

                        if (direction > 0) 
                            status_set_playmode(STATUS_FASTFORWARD);
                        else
                        status_set_playmode(STATUS_FASTBACKWARD);

                        ff_rewind = true;

                        step = ff_rew_steps[global_settings.ff_rewind_min_step];

                        max_step = id3->length * FF_REWIND_MAX_PERCENT / 100;

                        if (step > max_step)
                            step = max_step;

                        ff_rewind_count = step * direction;
                        accel_tick = current_tick +
                            global_settings.ff_rewind_accel*HZ; 
                    }
                    else
                        break;
                }

                if (direction > 0) {
                if ((id3->elapsed + ff_rewind_count) > id3->length)
                    ff_rewind_count = id3->length - id3->elapsed;
                }
                else {
                    if ((int)(id3->elapsed + ff_rewind_count) < 0)
                        ff_rewind_count = -id3->elapsed;
                }

                if(wps_time_countup == false)
                    wps_refresh(id3, -ff_rewind_count,
                                WPS_REFRESH_PLAYER_PROGRESS |
                                WPS_REFRESH_DYNAMIC);
                else
                    wps_refresh(id3, ff_rewind_count,
                                WPS_REFRESH_PLAYER_PROGRESS |
                                WPS_REFRESH_DYNAMIC);

                break;

            case BUTTON_LEFT | BUTTON_REL:
            case BUTTON_RIGHT | BUTTON_REL: 
                mpeg_ff_rewind(id3->elapsed+ff_rewind_count);
                ff_rewind_count = 0;
                ff_rewind = false;
                if (paused)
                    status_set_playmode(STATUS_PAUSE);
                else {
                    mpeg_resume();
                    status_set_playmode(STATUS_PLAY);
                }
#ifdef HAVE_LCD_CHARCELLS
                wps_display(id3);
#endif
                exit = true;
                break;

            case SYS_USB_CONNECTED:
                status_set_playmode(STATUS_STOP);
                usb_screen();
                usb = true;
                exit = true;
                break;
        }
        if (!exit)
            button = button_get(true);
    }

    /* let mpeg thread update id3->elapsed before calling wps_refresh */
    yield(); 
    wps_refresh(id3, 0, WPS_REFRESH_ALL);
    return usb;
}

static bool update(void)
{
    bool track_changed = mpeg_has_changed_track();
    bool retcode = false;

    if (track_changed)
    {
        lcd_stop_scroll();
        id3 = mpeg_current_track();
        if (wps_display(id3))
            retcode = true;
        else
            wps_refresh(id3, 0, WPS_REFRESH_ALL);

        if (id3)
            memcpy(current_track_path, id3->path, sizeof(current_track_path));
    }

    if (id3)
        wps_refresh(id3, 0, WPS_REFRESH_NON_STATIC);

    status_draw(false);

    /* save resume data */
    if ( id3 &&
         global_settings.resume &&
         global_settings.resume_offset != id3->offset ) {
        DEBUGF("R%X,%X (%X)\n", global_settings.resume_offset,
               id3->offset,id3);
 
        if (!playlist_get_resume_info(&global_settings.resume_index))
        {
            global_settings.resume_offset = id3->offset;
            settings_save();
        }
    }
    else if ( !id3 && track_changed ) {
        global_settings.resume_index = -1;
        global_settings.resume_offset = -1;
        settings_save();
    }

    return retcode;
}

static bool menu(void)
{
    static bool muted = false;
    bool exit = false;
    int last_button = 0;

#ifdef HAVE_LCD_CHARCELLS
    status_set_param(true);
    status_draw(false);
#endif

    while (!exit) {
        int button = button_get(true);
        
        switch ( button ) {
            /* go into menu */
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_F1 | BUTTON_REL:
#else
            case BUTTON_MENU | BUTTON_REL:
#endif
                exit = true;
                if ( !last_button && !keys_locked ) {
                    lcd_stop_scroll();

                    if (main_menu())
                        return true;
#ifdef HAVE_LCD_BITMAP
                    if(global_settings.statusbar)
                        lcd_setmargins(0, STATUSBAR_HEIGHT);
                    else
                        lcd_setmargins(0, 0);
#endif
                }
                break;

                /* mute */
#ifdef BUTTON_MENU
            case BUTTON_MENU | BUTTON_PLAY:
#else
            case BUTTON_F1 | BUTTON_PLAY: