onplay.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: onplay.c,v 1.23 2004/03/11 10:43:53 linusnielsen Exp $
 *
 * Copyright (C) 2002 Bj鰎n Stenberg
 *
 * 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 <stdbool.h>

#include "debug.h"
#include "sprintf.h"
#include "lcd.h"
#include "dir.h"
#include "file.h"
#include "mpeg.h"
#include "menu.h"
#include "lang.h"
#include "playlist.h"
#include "button.h"
#include "kernel.h"
#include "keyboard.h"
#include "mp3data.h"
#include "id3.h"
#include "screens.h"
#include "tree.h"
#include "buffer.h"
#include "settings.h"
#include "status.h"
#include "playlist_viewer.h"
#include "onplay.h"

static char* selected_file = NULL;
static int selected_file_attr = 0;
static int onplay_result = ONPLAY_OK;

/* For playlist options */
struct playlist_args {
    int position;
    bool queue;
};

static bool add_to_playlist(int position, bool queue)
{
    bool new_playlist = !(mpeg_status() & MPEG_STATUS_PLAY);

    if (new_playlist)
        playlist_create(NULL, NULL);

    if ((selected_file_attr & TREE_ATTR_MASK) == TREE_ATTR_MPA)
        playlist_insert_track(NULL, selected_file, position, queue);
    else if (selected_file_attr & ATTR_DIRECTORY)
    {
        bool recurse = false;

        if (global_settings.recursive_dir_insert != RECURSE_ASK)
            recurse = (bool)global_settings.recursive_dir_insert;
        else
        {
            /* Ask if user wants to recurse directory */
            bool exit = false;
            
            lcd_clear_display();
            lcd_puts_scroll(0,0,str(LANG_RECURSE_DIRECTORY_QUESTION));
            lcd_puts_scroll(0,1,selected_file);
            
#ifdef HAVE_LCD_BITMAP
            lcd_puts(0,3,str(LANG_CONFIRM_WITH_PLAY_RECORDER));
            lcd_puts(0,4,str(LANG_CANCEL_WITH_ANY_RECORDER)); 
#endif
            
            lcd_update();
            
            while (!exit) {
                int btn = button_get(true);
                switch (btn) {
                case BUTTON_PLAY:
                    recurse = true;
                    exit = true;
                    break;
                default:
                    /* ignore button releases */
                    if (!(btn & BUTTON_REL))
                        exit = true;
                    break;
                }
            }
        }

        playlist_insert_directory(NULL, selected_file, position, queue,
            recurse);
    }
    else if ((selected_file_attr & TREE_ATTR_MASK) == TREE_ATTR_M3U)
        playlist_insert_playlist(NULL, selected_file, position, queue);

    if (new_playlist && (playlist_amount() > 0))
    {
        /* nothing is currently playing so begin playing what we just
           inserted */
        if (global_settings.playlist_shuffle)
            playlist_shuffle(current_tick, -1);
        playlist_start(0,0);
        status_set_playmode(STATUS_PLAY);
        status_draw(false);
        onplay_result = ONPLAY_START_PLAY;
    }

    return false;
}

static bool view_playlist(void)
{
    bool was_playing = mpeg_status() & MPEG_STATUS_PLAY;
    bool result;

    result = playlist_viewer_ex(selected_file);

    if (!was_playing && (mpeg_status() & MPEG_STATUS_PLAY) &&
        onplay_result == ONPLAY_OK)
        /* playlist was started from viewer */
        onplay_result = ONPLAY_START_PLAY;

    return result;
}

/* Sub-menu for playlist options */
static bool playlist_options(void)
{
    struct menu_items menu[7]; 
    struct playlist_args args[7]; /* increase these 2 if you add entries! */
    int m, i=0, pstart=0, result;
    bool ret = false;

    if ((selected_file_attr & TREE_ATTR_MASK) == TREE_ATTR_M3U)
    {
        menu[i].desc = str(LANG_VIEW);
        menu[i].function = view_playlist;
        i++;
        pstart++;
    }

    if (mpeg_status() & MPEG_STATUS_PLAY)
    {
        menu[i].desc = str(LANG_INSERT);
        args[i].position = PLAYLIST_INSERT;
        args[i].queue = false;
        i++;
        
        menu[i].desc = str(LANG_INSERT_FIRST);
        args[i].position = PLAYLIST_INSERT_FIRST;
        args[i].queue = false;
        i++;
        
        menu[i].desc = str(LANG_INSERT_LAST);
        args[i].position = PLAYLIST_INSERT_LAST;
        args[i].queue = false;
        i++;
        
        menu[i].desc = str(LANG_QUEUE);
        args[i].position = PLAYLIST_INSERT;
        args[i].queue = true;
        i++;
        
        menu[i].desc = str(LANG_QUEUE_FIRST);
        args[i].position = PLAYLIST_INSERT_FIRST;
        args[i].queue = true;
        i++;
        
        menu[i].desc = str(LANG_QUEUE_LAST);
        args[i].position = PLAYLIST_INSERT_LAST;
        args[i].queue = true;
        i++;
    }
    else if (((selected_file_attr & TREE_ATTR_MASK) == TREE_ATTR_MPA) ||
             (selected_file_attr & ATTR_DIRECTORY))
    {
        menu[i].desc = str(LANG_INSERT);
        args[i].position = PLAYLIST_INSERT;
        args[i].queue = false;
        i++;
    }

    m = menu_init( menu, i );
    result = menu_show(m);
    if (result >= 0 && result < pstart)
        ret = menu[result].function();
    else if (result >= pstart)
        ret = add_to_playlist(args[result].position, args[result].queue);
    menu_exit(m);

    return ret;
}

static bool delete_file(void)
{
    bool exit = false;

    lcd_clear_display();
    lcd_puts(0,0,str(LANG_REALLY_DELETE));
    lcd_puts_scroll(0,1,selected_file);

#ifdef HAVE_LCD_BITMAP
    lcd_puts(0,3,str(LANG_CONFIRM_WITH_PLAY_RECORDER));
    lcd_puts(0,4,str(LANG_CANCEL_WITH_ANY_RECORDER)); 
#endif

    lcd_update();

    while (!exit) {
        int btn = button_get(true);
        switch (btn) {
        case BUTTON_PLAY:
            if (!remove(selected_file)) {
                onplay_result = ONPLAY_RELOAD_DIR;
                lcd_clear_display();
                lcd_puts(0,0,str(LANG_DELETED));
                lcd_puts_scroll(0,1,selected_file);
                lcd_update();
                sleep(HZ);
                exit = true;
            }
            break;

        default:
            /* ignore button releases */
            if (!(btn & BUTTON_REL))
                exit = true;
            break;
        }
    }
    return false;
}

static bool rename_file(void)
{
    char newname[MAX_PATH];
    char* ptr = strrchr(selected_file, '/') + 1;
    int pathlen = (ptr - selected_file);
    strncpy(newname, selected_file, sizeof newname);
    if (!kbd_input(newname + pathlen, (sizeof newname)-pathlen)) {
        if (!strlen(selected_file+pathlen) ||
            (rename(selected_file, newname) < 0)) {
            lcd_clear_display();
            lcd_puts(0,0,str(LANG_RENAME));
            lcd_puts(0,1,str(LANG_FAILED));
            lcd_update();
            sleep(HZ*2);
        }
        else
            onplay_result = ONPLAY_RELOAD_DIR;
    }

    return false;
}

static void xingupdate(int percent)
{
    char buf[32];

    snprintf(buf, 32, "%d%%", percent);
    lcd_puts(0, 1, buf);
    lcd_update();
}


static int insert_data_in_file(char *fname, int fpos, char *buf, int num_bytes)
{
    int readlen;
    int rc;
    int orig_fd, fd;
    char tmpname[MAX_PATH];
    
    snprintf(tmpname, MAX_PATH, "%s.tmp", fname);

    orig_fd = open(fname, O_RDONLY);
    if(orig_fd < 0) {
        return 10*orig_fd - 1;
    }

    fd = creat(tmpname, O_WRONLY);
    if(fd < 0) {
        close(orig_fd);
        return 10*fd - 2;