tree.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: tree.c,v 1.227 2004/03/11 10:43:53 linusnielsen Exp $
 *
 * Copyright (C) 2002 Daniel 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 "applimits.h"
#include "dir.h"
#include "file.h"
#include "lcd.h"
#include "font.h"
#include "backlight.h"
#include "button.h"
#include "kernel.h"
#include "usb.h"
#include "tree.h"
#include "main_menu.h"
#include "sprintf.h"
#include "mpeg.h"
#include "playlist.h"
#include "menu.h"
#include "wps.h"
#include "wps-display.h"
#include "settings.h"
#include "status.h"
#include "debug.h"
#include "ata.h"
#include "rolo.h"
#include "icons.h"
#include "lang.h"
#include "language.h"
#include "screens.h"
#include "keyboard.h"
#include "bookmark.h"
#include "onplay.h"
#include "buffer.h"
#include "plugin.h"
#include "power.h"

#ifdef HAVE_LCD_BITMAP
#include "widgets.h"
#define BOOTFILE "ajbrec.ajz"
#else
#define BOOTFILE "archos.mod"
#endif

/* a table for the know file types */
static struct
{
    char* extension; /* extension for which the file type is recognized */
    int tree_attr; /* which identifier */
    int icon; /* the icon which shall be used for it, -1 if unknown */
    /* To have it extendable, there could be more useful stuff in here,
       like handler functions, plugin name, etc. */
} filetypes[] = {
    { ".mp3", TREE_ATTR_MPA, File     },
    { ".mp2", TREE_ATTR_MPA, File     },
    { ".mpa", TREE_ATTR_MPA, File     },
    { ".m3u", TREE_ATTR_M3U, Playlist },
    { ".cfg", TREE_ATTR_CFG, Config   },
    { ".wps", TREE_ATTR_WPS, Wps,     },
    { ".txt", TREE_ATTR_TXT, Text     },
    { ".lng", TREE_ATTR_LNG, Language },
    { ".rock",TREE_ATTR_ROCK,Plugin   },
#ifdef HAVE_LCD_BITMAP
    { ".fnt", TREE_ATTR_FONT,Font     },
    { ".ch8", TREE_ATTR_CH8, Chip8    },
    { ".rvf", TREE_ATTR_RVF, Video    },
    { ".bmark",TREE_ATTR_BMARK,Bookmark   },
#else
   {  ".bmark", TREE_ATTR_BMARK, -1       },
#endif
#ifndef SIMULATOR
#ifdef HAVE_LCD_BITMAP
    { ".ucl", TREE_ATTR_UCL, Flashfile},
    { ".ajz", TREE_ATTR_MOD, Mod_Ajz  },
#else
    { ".mod", TREE_ATTR_MOD, Mod_Ajz  },
#endif
#endif /* #ifndef SIMULATOR */
};

/* Boot value of global_settings.max_files_in_dir */
static int max_files_in_dir;

static char *name_buffer;
static int name_buffer_size;    /* Size of allocated buffer */
static int name_buffer_length;  /* Currently used amount */

static struct entry *dircache;

static int dircursor;
static int dirstart;
static int dirlevel;
static int filesindir;
static int dirpos[MAX_DIR_LEVELS];
static int cursorpos[MAX_DIR_LEVELS];
static char lastdir[MAX_PATH];
static char lastfile[MAX_PATH];
static char currdir[MAX_PATH];
static char currdir_save[MAX_PATH];
static bool reload_dir = false;
static int boot_size = 0;
static int boot_cluster;
static bool boot_changed = false;

static bool start_wps = false;
static bool dirbrowse(char *root, int *dirfilter);

void browse_root(void)
{
#ifndef SIMULATOR
    dirbrowse("/", &global_settings.dirfilter);
#else
    if (!dirbrowse("/", &global_settings.dirfilter)) {
        DEBUGF("No filesystem found. Have you forgotten to create it?\n");
    }
#endif
}


#ifdef HAVE_LCD_BITMAP

/* pixel margins */
#define MARGIN_X (global_settings.scrollbar && \
                  filesindir > tree_max_on_screen ? SCROLLBAR_WIDTH : 0) + \
                  CURSOR_WIDTH + (global_settings.show_icons && ICON_WIDTH > 0 ? ICON_WIDTH :0)
#define MARGIN_Y (global_settings.statusbar ? STATUSBAR_HEIGHT : 0)

/* position the entry-list starts at */
#define LINE_X   0
#define LINE_Y   (global_settings.statusbar ? 1 : 0)

#define CURSOR_X (global_settings.scrollbar && \
                  filesindir > tree_max_on_screen ? 1 : 0)
#define CURSOR_Y 0 /* the cursor is not positioned in regard to
                      the margins, so this is the amount of lines
                      we add to the cursor Y position to position
                      it on a line */
#define CURSOR_WIDTH  (global_settings.invert_cursor ? 0 : 4)

#define ICON_WIDTH    6

#define SCROLLBAR_X      0
#define SCROLLBAR_Y      lcd_getymargin()
#define SCROLLBAR_WIDTH  6

extern unsigned char bitmap_icons_6x8[LastIcon][6];

#else /* HAVE_LCD_BITMAP */

#define TREE_MAX_ON_SCREEN   2
#define TREE_MAX_LEN_DISPLAY 11 /* max length that fits on screen */
#define LINE_X      2 /* X position the entry-list starts at */
#define LINE_Y      0 /* Y position the entry-list starts at */

#define CURSOR_X    0
#define CURSOR_Y    0 /* not really used for players */

#endif /* HAVE_LCD_BITMAP */

#ifdef HAVE_RECORDER_KEYPAD
#define TREE_NEXT  BUTTON_DOWN
#define TREE_PREV  BUTTON_UP
#define TREE_EXIT  BUTTON_LEFT
#define TREE_ENTER BUTTON_RIGHT
#define TREE_MENU  BUTTON_F1
#else
#define TREE_NEXT  BUTTON_RIGHT
#define TREE_PREV  BUTTON_LEFT
#define TREE_EXIT  BUTTON_STOP
#define TREE_ENTER BUTTON_PLAY
#define TREE_MENU  BUTTON_MENU
#endif /* HAVE_RECORDER_KEYPAD */

static int build_playlist(int start_index)
{
    int i;
    int start=start_index;

    for(i = 0;i < filesindir;i++)
    {
        if((dircache[i].attr & TREE_ATTR_MASK) == TREE_ATTR_MPA)
        {
            DEBUGF("Adding %s\n", dircache[i].name);
            if (playlist_add(dircache[i].name) < 0)
                break;
        }
        else
        {
            /* Adjust the start index when se skip non-MP3 entries */
            if(i < start)
                start_index--;
        }
    }

    return start_index;
}

static int compare(const void* p1, const void* p2)
{
    struct entry* e1 = (struct entry*)p1;
    struct entry* e2 = (struct entry*)p2;

    if (( e1->attr & ATTR_DIRECTORY ) == ( e2->attr & ATTR_DIRECTORY ))
        if (global_settings.sort_case)
            return strncmp(e1->name, e2->name, MAX_PATH);
        else
            return strncasecmp(e1->name, e2->name, MAX_PATH);
    else
        return ( e2->attr & ATTR_DIRECTORY ) - ( e1->attr & ATTR_DIRECTORY );
}

static void showfileline(int line, int direntry, bool scroll, int *dirfilter)
{
    char* name = dircache[direntry].name;
    int xpos = LINE_X;

#ifdef HAVE_LCD_CHARCELLS
    if (!global_settings.show_icons)
        xpos--;
#endif

    /* if any file filter is on, strip the extension */
    if (*dirfilter != SHOW_ALL &&
        !(dircache[direntry].attr & ATTR_DIRECTORY))
    {
        char* dotpos = strrchr(name, '.');
        char temp=0;
        if (dotpos) {
            temp = *dotpos;
            *dotpos = 0;
        }
        if(scroll)
#ifdef HAVE_LCD_BITMAP
            if (global_settings.invert_cursor)
                lcd_puts_scroll_style(xpos, line, name, STYLE_INVERT);
            else
#endif
                lcd_puts_scroll(xpos, line, name);
        else
            lcd_puts(xpos, line, name);
        if (temp)
            *dotpos = temp;
    }
    else {
        if(scroll)
#ifdef HAVE_LCD_BITMAP
            if (global_settings.invert_cursor)
                lcd_puts_scroll_style(xpos, line, name, STYLE_INVERT);
            else
#endif
                lcd_puts_scroll(xpos, line, name);
        else
            lcd_puts(xpos, line, name);
    }
}

/* load sorted directory into dircache.  returns NULL on failure. */
struct entry* load_and_sort_directory(char *dirname, int *dirfilter,
                                      int *num_files, bool *buffer_full)
{
    int i;

    DIR *dir = opendir(dirname);
    if(!dir)
        return NULL; /* not a directory */

    name_buffer_length = 0;
    *buffer_full = false;

    for ( i=0; i < max_files_in_dir; i++ ) {
        int len;
        struct dirent *entry = readdir(dir);
        struct entry* dptr = &dircache[i];
        if (!entry)
            break;

        len = strlen(entry->d_name);

        /* skip directories . and .. */
        if ((entry->attribute & ATTR_DIRECTORY) &&
            (((len == 1) &&
            (!strncmp(entry->d_name, ".", 1))) ||
            ((len == 2) &&
            (!strncmp(entry->d_name, "..", 2))))) {
            i--;
            continue;
        }

        /* Skip FAT volume ID */
        if (entry->attribute & ATTR_VOLUME_ID) {
            i--;
            continue;
        }

        /* filter out dotfiles and hidden files */
        if (*dirfilter != SHOW_ALL &&
            ((entry->d_name[0]=='.') ||
            (entry->attribute & ATTR_HIDDEN))) {
            i--;
            continue;
        }

        dptr->attr = entry->attribute;

        /* check for known file types */
        if ( !(dptr->attr & ATTR_DIRECTORY) && (len > 4) )
        {
            unsigned j;
            for (j=0; j<sizeof(filetypes)/sizeof(*filetypes); j++)
            {
                if (!strcasecmp(
                    &entry->d_name[len-strlen(filetypes[j].extension)],
                    filetypes[j].extension))
                {
                    dptr->attr |= filetypes[j].tree_attr;
                    break;
                }
            }
        }

        /* memorize/compare details about the boot file */
        if ((currdir[1] == 0) && !strcasecmp(entry->d_name, BOOTFILE)) {
            if (boot_size) {
                if ((entry->size != boot_size) ||
                    (entry->startcluster != boot_cluster))
                    boot_changed = true;
            }
            boot_size = entry->size;
            boot_cluster = entry->startcluster;
        }

        /* filter out non-visible files */
        if (!(dptr->attr & ATTR_DIRECTORY) && (
            (*dirfilter == SHOW_PLAYLIST &&
             (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_M3U) ||
            ((*dirfilter == SHOW_MUSIC &&
             (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_MPA) &&
             (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_M3U) ||
            (*dirfilter == SHOW_SUPPORTED && !(dptr->attr & TREE_ATTR_MASK)) ||
            (*dirfilter == SHOW_WPS && (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_WPS) ||
            (*dirfilter == SHOW_CFG && (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_CFG) ||
            (*dirfilter == SHOW_LNG && (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_LNG) ||
            (*dirfilter == SHOW_MOD && (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_MOD) ||
            (*dirfilter == SHOW_FONT && (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_FONT) ||
            (*dirfilter == SHOW_PLUGINS && (dptr->attr & TREE_ATTR_MASK) != TREE_ATTR_ROCK)))
        {
            i--;
            continue;
        }

        if (len > name_buffer_size - name_buffer_length - 1) {
            /* Tell the world that we ran out of buffer space */
            *buffer_full = true;
            break;
        }
        dptr->name = &name_buffer[name_buffer_length];
        strcpy(dptr->name,entry->d_name);
        name_buffer_length += len + 1;
    }
    *num_files = i;
    closedir(dir);
    strncpy(lastdir,dirname,sizeof(lastdir));
    lastdir[sizeof(lastdir)-1] = 0;
    qsort(dircache,i,sizeof(struct entry),compare);

    return dircache;
}

static int showdir(char *path, int start, int *dirfilter)
{
    int icon_type = 0;
    int i;
    int tree_max_on_screen;
    bool dir_buffer_full;

#ifdef HAVE_LCD_BITMAP
    int line_height;
    int fw, fh;