IPOD Shuffle任意播放mp3软件源代码

/* This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include <ctype.h> #include <time.h> #include <errno.h> #define TITLE "KeyJ's iPod shuffle Database Builder" #define VERSION "0.5" #include "direct.h" // lcc-win32 hack #include "dynbuf.h" #include "browse.h" int do_wait=1; int total_count=0; FILE *iTunesSD; #define HEADER_SIZE 18 uint8_t header[HEADER_SIZE]; #define ENTRY_SIZE 558 uint8_t entry[ENTRY_SIZE]; #define ENTRY_START 32 #define streq(a,b) (!strcmp(a,b)) char *get_ext(char *filename) { static char ext[8]; char *dot=strrchr(filename,'.'); int i,l; ext[0]='\0'; if(!dot) return ext; l=strlen(++dot)+1; if(l>8) return ext; for(i=0; i<l; ++i) ext[i]=tolower(dot[i]); return ext; } void do_exit(int code) { if(do_wait) { printf("\nPress ENTER to quit ...\n"); getchar(); } exit(code); } void write_to_db(char *filename) { int offset; char *ext; if(!filename || !filename[0]) return; ext=get_ext(filename); if(streq(ext,"mp3")) entry[29]=1; else if(streq(ext,"m4a") || streq(ext,"m4b") || streq(ext,"m4p")) entry[29]=2; else if(streq(ext,"aa")) entry[29]=4; ++total_count; ++filename; for(offset=ENTRY_START; offset<ENTRY_SIZE; offset+=2) { entry[offset]=0; if(*filename) entry[offset+1]=*filename++; else entry[offset+1]=0; } if(strcmp(ext,"m4b") && strcmp(ext,"aa")) entry[555]=1; fwrite(entry,1,ENTRY_SIZE,iTunesSD); } int idcmp(const void* a, const void* b) { return stricmp(*(char**)a,*(char**)b); } void browse(char *path) { #define PATH_LENGTH 256 void *bh; char *filename; int isdir; char temp[PATH_LENGTH+8]; dynbuf_t *names,*indexes,*pointers; int i,count=0,mp3count=0; if(path[0]=='.' && !path[1]) printf("%c: ",path_delim); else printf("%s: ",path+1); fflush(stdout); bh=browse_start(path); if(!bh) { printf("cannot browse\n",path+1); return; } names=dynbuf_create(262144); indexes=dynbuf_create(1024); pointers=dynbuf_create(1024); while(browse_next(bh,&filename,&isdir)) { int index; if(filename[0]=='.') continue; if(!isdir) { char *ext=get_ext(filename); if(strcmp(ext,"mp3") && strcmp(ext,"wav") && strcmp(ext,"aa") && strcmp(ext,"m4a") && strcmp(ext,"m4b") && strcmp(ext,"m4p")) continue; } ++count; if(!isdir) ++mp3count; snprintf(temp,PATH_LENGTH,"%c%s",isdir?'D':'F',filename); index=dynbuf_append(names,temp,strlen(temp)+1); dynbuf_append(indexes,&index,sizeof(int)); } browse_end(bh); printf("%d files\n",mp3count); for(i=0; i<count; ++i) { int *index=dynbuf_get(indexes,i*sizeof(int)); char* ptr=dynbuf_get(names,*index); dynbuf_append(pointers,&ptr,sizeof(char*)); } dynbuf_free(indexes); qsort(pointers->data,count,sizeof(char*),idcmp); for(i=0; i<count; ++i) { filename=*(char**)dynbuf_get(pointers,i*sizeof(char*)); snprintf(temp,PATH_LENGTH,"%s%c%s",path,path_delim,filename+1); if(filename[0]=='D') browse(temp); else write_to_db(temp); } dynbuf_free(names); dynbuf_free(pointers); } int kill(char *filename, char *title) { printf("Resetting %s ... ",title); if(!remove(filename)) printf("OK.\n"); else { if(errno==2) printf("not needed.\n"); else { printf("FAILED.\n"); return 0; } } return 1; } int main(int argc, char *argv[]) { int have=0; printf("Welcome to " TITLE ", version " VERSION "\n\n"); if(argc==2 && !strcmp(argv[1],"-q")) do_wait=0; if(chdir("iPod_Control/iTunes") || chdir("../..")) { printf("ERROR: No iPod control directory found!\n" "Please make sure that:\n" " (*) this program's working directory is the iPod's root directory\n" " (*) the iPod was correctly initialized with iTunes\n"); do_exit(1); } iTunesSD=fopen("iPod_Control/iTunes/iTunesSD","rb"); if(iTunesSD) { if(fread(header,HEADER_SIZE,1,iTunesSD)) have=1; if(have && fread(entry,ENTRY_SIZE,1,iTunesSD)) have=2; fclose(iTunesSD); } if(have<1) { printf("Rebuilding iTunesSD file header from scratch.\n"); memset(header,0,HEADER_SIZE); header[3]=0x01; header[4]=0x06; header[8]=0x12; } else printf("Using iTunesSD file header from existing database.\n"); if(have<2) { printf("Rebuilding iTunesSD entry header from scratch.\n"); memset(entry,0,ENTRY_SIZE); entry[1]=0x02; entry[2]=0x2E; entry[3]=0x5A; entry[4]=0xA5; entry[5]=0x01; entry[26]=0x64; entry[29]=0x01; entry[31]=0x02; } else printf("Using iTunesSD entry header from existing database.\n"); iTunesSD=fopen("iPod_Control/iTunes/iTunesSD","wb"); if(!iTunesSD) { printf("ERROR: Cannot write to the iPod database file (iTunesSD)!\n" "Please make sure that:\n" " (*) you have sufficient permissions to write to the iPod volume\n" " (*) you are actually using an iPod shuffle, and not some other iPod model :)\n"); do_exit(1); } fwrite(header,1,HEADER_SIZE,iTunesSD); printf("\nSearching for files on the iPod.\n"); browse("."); printf("%d playable files were found on your iPod.\n\n",total_count); printf("Fixing iTunesSD header.\n"); header[2]=total_count&0xFF; header[1]=total_count>>8; fseek(iTunesSD,0,SEEK_SET); fwrite(header,1,HEADER_SIZE,iTunesSD); if(kill("iPod_Control/iTunes/iTunesPState", "playback state") *kill("iPod_Control/iTunes/iTunesStats", "statistics") *kill("iPod_Control/iTunes/iTunesShuffle","shuffle sequence")) printf("\nThe iPod shuffle database was rebuilt successfully." "\nHave fun listening to your music!\n"); else printf("\nWARNING: The main database file was rebuild successfully, but there were errors" "\n while resetting the other files. However, playback MAY work correctly.\n"); do_exit(0); return 0; }