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#include "stdinc.h" #include "utils.h" #include "mp3.h" struct mp3_player g_player; int mp3_file_open(struct mp3_player *plyer) { char fpath[86]; sprintf(fpath, "%s/%s", plyer->pcurs->path, plyer->pcurs->name); plyer->pcurs->fd = open(fpath, O_RDONLY); if (-1 == plyer->pcurs->fd) ERR_PRINT_RET(-1); return 0; } int mp3_file_close(struct mp3_player *plyer) { close(plyer->pcurs->fd); return 0; } int mp3_get_trailer(struct mp3_player *plyer) { char tag[5]; lseek(plyer->pcurs->fd, -128L, SEEK_END); read(plyer->pcurs->fd, tag, 3); if (strncmp(tag, "TAG", 3)) { plyer->pcurs->trailer= NULL; return 0; } plyer->pcurs->trailer = (struct mp3_trailer*)malloc(sizeof(struct mp3_trailer)); lseek(plyer->pcurs->fd, -128L, SEEK_END); read(plyer->pcurs->fd, plyer->pcurs->trailer, sizeof(struct mp3_trailer)); DBG("Title: %s\n", plyer->pcurs->trailer->title); DBG("Artist: %s\n", plyer->pcurs->trailer->artist); DBG("Album: %s\n", plyer->pcurs->trailer->album); DBG("Year: %s\n", plyer->pcurs->trailer->year); DBG("Comment: %s\n", plyer->pcurs->trailer->comment); return 0; } static int postfix_match(char* fn, char* pf) { char* tfn; for (tfn=fn; *tfn!='.' && *tfn!=0; tfn++); if (*tfn==0 || pf==0) return -1; tfn++; return strcmp(tfn, pf); } int mp3_init_sglist(struct mp3_player *plyer, const char *path) { DIR *dir; struct dirent *ptr; struct mp3_info *item; int i = 0; INIT_LIST_HEAD(&plyer->sghead); dir = opendir(path); while (NULL != (ptr=readdir(dir))) { if (0 != postfix_match(ptr->d_name, "mp3")) continue; item = (struct mp3_info*)malloc(sizeof(struct mp3_info)); if (item==NULL) { list_for_each_entry(item, &plyer->sghead, sglist) { free(item); } return -1; } item->sgid = i + 1; strcpy(item->name, ptr->d_name); strcpy(item->path, path); list_add_tail(&item->sglist, &plyer->sghead); i++; } plyer->sg_nr = i; return 0; } int mp3_set_volume(struct mp3_player *plyer, int vol) { #if defined(SND_OSS) plyer->vol = vol; if (-1 == ioctl(plyer->mixfd, SOUND_MIXER_WRITE_VOLUME, &vol)) ERR_PRINT_RET(-1); if (-1 == ioctl(plyer->mixfd, SOUND_MIXER_READ_VOLUME, &vol)) ERR_PRINT_RET(-1); //plyer->vol = vol; #elif defined(SND_ALSA) char cmd[86]; if (vol > 100) vol = 100; if (vol < 0) vol = 0; //sprintf(cmd, "amixer cset name='Voice Playback Master Volume' %d%% ", vol); sprintf(cmd, "amixer cset name='PCM Playback Volume' %d%% > /dev/null ", vol); system(cmd); plyer->vol = vol; #endif return 0; } static int mp3_tmpfile_open(struct mp3_player *plyer) { plyer->tmpfp = fopen(TMP_FILE_NAME, "w+"); if (NULL == plyer->tmpfp) ERR_PRINT_RET(-1); return 0; } static void mp3_tmpfile_close(struct mp3_player *plyer) { fclose(plyer->tmpfp); } static int mp3_get_total_time(struct mp3_player *plyer) { pid_t pid; if (-1==(pid=fork())) { ERR_PRINT_EXT(EXIT_FAILURE); } else if (0 == pid) { char **args; //命令 args = (char**)malloc((plyer->sg_nr + 2) * sizeof(char**)); args[0] = "madplay"; args[1] = "-QI"; int i = 2; struct mp3_info *item; list_for_each_entry(item, &plyer->sghead, sglist) { char fpath[86]; sprintf(fpath, "%s/%s", item->path, item->name); args[i] = strdup(fpath); i++; } args[i] = NULL; for (i=0; args[i]!=NULL; i++) { DBG("args[%d] = %s\n", i, args[i]); } if (execv("/usr/bin/madplay", args)) //if (execv("/opt/Enjoylinux/madplay/libs/madplay-0.15.2b/madplay", args)) ERR_PRINT_EXT(EXIT_FAILURE); } else { int status; waitpid(pid, &status, 0); DBG("get_total process is over!, status = %d\n", status); if (0 == status) { struct mp3_info *item; char buf[256]; list_for_each_entry(item, &plyer->sghead, sglist) { item->total_time = atoi(fgets(buf, 256, plyer->tmpfp)); DBG("TOTAL TIME = %d\n", item->total_time); } } } return 0; } void mp3_update_cur_time(struct mp3_player *plyer) { char buf[256]; fflush(plyer->tmpfp); fseek(plyer->tmpfp, 0, SEEK_SET); if (NULL==fgets(buf, 256, plyer->tmpfp)) return; //DBG("cur_time = %s\n", buf); plyer->cur_time = atoi(buf); } int mp3_player_init(struct mp3_player *plyer, const char *path) { if (-1 == mp3_tmpfile_open(plyer)) return -1; if (-1 == mp3_init_sglist(plyer, path)) return -1; list_for_each_entry(plyer->pcurs, &plyer->sghead, sglist) { DBG("NAME: %s\n", plyer->pcurs->name); if (-1 == mp3_file_open(plyer)) return -1; if (-1 == mp3_get_trailer(plyer)) return -1; if (-1 == mp3_file_close(plyer)) return -1; } if (-1 == mp3_get_total_time(plyer)) return -1; plyer->stat = PLY_STAT_STOP; plyer->mode = PLY_MODE_REPALL; plyer->vol = PLY_VOL_DEF; plyer->cur_time = 0; plyer->pcurs = //初始化歌曲列表后，将第一个歌曲结构赋给 pcurs list_entry((&plyer->sghead)->next, typeof(struct mp3_info), sglist); DBG("CUR NAME: %s\n", plyer->pcurs->name); #if defined(SND_OSS) plyer->mixfd = open(PLY_VOL_DEV, O_RDWR); if (-1 == plyer->mixfd) ERR_PRINT_RET(-1); #elif defined(SND_ALSA) #endif mp3_set_volume(plyer, plyer->vol); return 0; } int mp3_prev_song(struct mp3_player *plyer) { struct list_head *pos = &plyer->pcurs->sglist; if (pos->prev == &plyer->sghead) pos = pos->prev; plyer->pcurs = list_entry(pos->prev, typeof(struct mp3_info), sglist); plyer->cur_time = 0; return 0; } int mp3_next_song(struct mp3_player *plyer) { struct list_head *pos = &plyer->pcurs->sglist; if (pos->next == &plyer->sghead) pos = pos->next; plyer->pcurs = list_entry(pos->next, typeof(struct mp3_info), sglist); plyer->cur_time = 0; return 0; } int mp3_pick_next(struct mp3_player *plyer) { int i; struct list_head *pos = &plyer->pcurs->sglist; switch (plyer->mode) { case PLY_MODE_REPONE: break; case PLY_MODE_REPALL: if (pos->next == &plyer->sghead) pos = pos->next; plyer->pcurs = list_entry(pos->next, typeof(struct mp3_info), sglist); break; case PLY_MODE_RANDOM: i = get_random_nr() % plyer->sg_nr + 1; list_for_each_entry(plyer->pcurs, &plyer->sghead, sglist) { if (i == plyer->pcurs->sgid) break; } break; default: break; } plyer->cur_time = 0; //DBG("%s\n", plyer->pcurs->name); return 0; }