自己的MP3 maplay+ucGUi+tslib+歌词同显+频谱

madplay的移植在前几篇文章有过了，但是在移植后对madplay进行控制很不方便，于是在找工作的几天，写一段程序用socket添加在madplay中作为和主程序的通讯接口

# if defined(USE_TTY) && !defined(_WIN32)if ((player->options & PLAYER_OPTION_TTYCONTROL) &&setup_tty() == -1)player->options &= ~PLAYER_OPTION_TTYCONTROL;socket_fd = setup_socket(); //sxbg
# endif

int readkey(int blocking)
{
# if !defined(_WIN32)unsigned char key;ssize_t count = 0;if (!blocking) {/* tty_fd should be a tty in noncanonical mode with VMIN = VTIME = 0 */count = read(tty_fd, &key, 1);if(count == 0){if(socket_fd > 0) count = recv(socket_fd, &key, 1, MSG_DONTWAIT);}if (count == -1 && errno != EINTR && errno != EAGAIN) {error("tty", ":read");return -1;}return (count == 1) ? key : 0;}else {struct termios tty, save_tty;if (tcgetattr(tty_fd, &tty) == -1) {error("tty", ":tcgetattr");return -1;}save_tty = tty;/* change terminal temporarily to get a blocking read() */tty.c_cc[VMIN] = 1;if (tcsetattr(tty_fd, TCSANOW, &tty) == -1) {error("tty", ":tcsetattr");return -1;}do{//count = read(tty_fd, &key, 1);if(count == 0){if(socket_fd > 0){recv(socket_fd, &key, 1, MSG_DONTWAIT);count = recv(socket_fd, &key, 1, 0);}}}while (count == -1 && errno == EINTR);if (count == -1)error("tty", ":read");if (tcsetattr(tty_fd, TCSANOW, &save_tty) == -1) {error("tty", ":tcsetattr");return -1;}if (count == -1)return -1;return (count == 1) ? key : 0;}

这样主进程就能控制madplay的播放，停止，音量等功能，修改部分代码完成当前播放时间和剩余时间的查询以便为进度条做准备，

int get_lrc_Info(FILE *fp, unsigned int second, LRC_INFO *lrc_info)
{char data;unsigned long file_len;unsigned long cur_ofs;unsigned long start_ofs;unsigned long end_ofs;unsigned long mark_ofs;unsigned int time_s;unsigned int status;	fseek(fp, 0L, SEEK_END);file_len = ftell(fp);start_ofs	= 0;	end_ofs		= file_len-1;_RE_SCAN:cur_ofs = (start_ofs>end_ofs)?(start_ofs>end_ofs):(end_ofs-start_ofs);if(cur_ofs>100){cur_ofs = (start_ofs + end_ofs)/2;}else{cur_ofs = start_ofs;}fseek(fp,cur_ofs,SEEK_SET);status = 0;mark_ofs = cur_ofs;while(cur_ofs=0x30)&&(data<=0x39)) // 0 ~ 9{time_s = (data-0x30)*10*60;status++;}break;case 2:	time_s += (data-0x30)*60;status++;break;case 3:if(data!=':'){while(1);}status++;break;case 4:time_s += (data-0x30)*10;status++;break;			case 5:		time_s += (data-0x30); status++;break;case 6:				if(data == ']'){if(time_s == second){lrc_info->time_s = time_s;lrc_info->offset = cur_ofs;status++;}					else if(time_s > second){					end_ofs = cur_ofs;goto _RE_SCAN;}else{start_ofs = cur_ofs;goto _RE_SCAN;}}break;case 7:if(data == 0x0A){					lrc_info->length = cur_ofs - lrc_info->offset;if(lrc_info->length <= 2) {start_ofs = cur_ofs;goto _RE_SCAN;}status++;return 0;}break;default:break;}if(status==8){break;}}if(status!=8){end_ofs = mark_ofs;goto _RE_SCAN;}return -1;
}void get_play_info(PLY_INFO *plyinfo)
{char cmd_tmp;char msg[64];int i = 0, j = 0, n;cmd_tmp = 'i';if(server_fd > 0){recv(server_fd, msg, 64, MSG_DONTWAIT);n = send(server_fd, &cmd_tmp, 1, 0);n = recv(server_fd, msg, 64, 0);}elsereturn ;msg[n] = '\0';printf("msg:%s\n", msg);while(i < n-6){if(msg[i] == ':' && msg[i+3] == ':'&& msg[i+6] == ' ' && msg[i+10] == ':'){break;}i++;}if(i < n-6){plyinfo->time_s = (msg[i+2]-0x30)*60 + (msg[i+4]-0x30)*10 + (msg[i+5]-0x30);current_time = plyinfo->time_s;remain_time = (msg[i+12]-0x30)*60 + (msg[i+14]-0x30)*10 + (msg[i+15]-0x30);j = 0;while(msg[i+17+j] != '.'){plyinfo->name[j] = msg[i+17+j];j++;}plyinfo->name[j] = '\0';}}
void *lrc_thread(void *arg)
{FILE* fp;unsigned int second;unsigned int i;unsigned char data;unsigned char cmd[16];unsigned char str[64];for(;;){get_play_info(&ply_info);current_time = ply_info.time_s;sprintf(cmd, "%s.lrc", ply_info.name);//printf("cmd*********%s\n", cmd);fp = fopen(cmd,"rd");if(fp == NULL){perror("Lrc cannot open !\n");/*GUI_SetColor(GUI_BLUE);GUI_SetBkColor(GUI_GREEN);GUI_ClearRect(0, 160, 319, 184);GUI_SetFont(&GUI_FontHZ24);GUI_SetTextAlign(GUI_TA_HCENTER);GUI_DispStringAt("没找到相应的歌词!", 160, 160);*/sleep(1);continue ;}if(get_lrc_Info(fp, ply_info.time_s, &lrc_info) == 0){fseek(fp,lrc_info.offset,SEEK_SET);bzero(str, sizeof(str));fread(str, 1, lrc_info.length, fp);fseek(fp,lrc_info.offset,SEEK_SET);/*i = 0;while(lrc_info.length){lrc_info.length--;fread(&data, 1, 1, fp);printf("%c", data);i++;}*/str[lrc_info.length]= '\0';GUI_SetColor(GUI_BLUE);GUI_SetBkColor(GUI_GREEN);GUI_ClearRect(0, 160, 319, 184);GUI_SetFont(&GUI_FontHZ24);GUI_SetTextAlign(GUI_TA_HCENTER);GUI_DispStringAt(str, 160, 160);PROGBAR_SetValue(ahProgBar,get_ratio());//printf("ratio:%d**********\n", get_ratio());}	fclose(fp);sleep(1);}return ((void *)1);
}

void *touch_thread(void *arg)
{struct tsdev *ts;GUI_PID_STATE state;int retval;int x, y;unsigned int i;struct ts_sample samp;char *tsdevice = NULL;static unsigned last_state = 0;printf("touch_thread begin, pid:%d\n",getpid());if((tsdevice = getenv("TSLIB_TSDEVICE")) == NULL){tsdevice = strdup("/dev/input/event0");}ts = ts_open(tsdevice, 0);if(!ts){printf("open error\n");return ((void *)1);}if(ts_config(ts)){perror("ts_config");return ((void *)1);   }while(1){retval = ts_read(ts, &samp, 1); if(retval != 1)continue;printf("%6d %6d %6d\n", samp.x, samp.y, samp.pressure);state.x = samp.x;state.y = samp.y;state.Pressed = samp.pressure;if(state.Pressed != last_state){printf("there have a key pressed!\n");GUI_PID_StoreState(&state);last_state = state.Pressed;}}return ((void *)1);}

void *exec_thread(void *arg)
{printf("exec_thread for touch screen,pid:%d\n", getpid());for(;;){GUI_Exec();usleep(200);}return ((void *)1);
}

void *socket_thread(void *arg)
{struct sockaddr_in server_addr;int opt = 1, ret;int listen_socket = -1;fd_set rfds;struct timeval tv;server_addr.sin_family = AF_INET;server_addr.sin_addr.s_addr = htons(INADDR_ANY);server_addr.sin_port = htons(6666);listen_socket = socket(PF_INET,SOCK_STREAM,0);if( listen_socket < 0){printf("Create Socket Failed!");exit(1);}setsockopt(listen_socket,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));setsockopt(listen_socket,IPPROTO_TCP,TCP_NODELAY,&opt,sizeof(opt));if(bind(listen_socket,(struct sockaddr*)&server_addr,sizeof(server_addr))){printf("Server Bind Port  Failed!"); exit(1);}if(listen(listen_socket, 5)){printf("Server Listen Failed!"); exit(1);}while (1){FD_ZERO(&rfds);if (listen_socket >= 0) {FD_SET(listen_socket, &rfds);}ret = select(listen_socket + 1, &rfds, NULL, NULL, &tv);if (ret <= 0)continue;if (listen_socket >= 0 && FD_ISSET(listen_socket, &rfds)) {if (server_fd >= 0) {shutdown(server_fd, SHUT_RDWR);}server_fd = accept(listen_socket, NULL, 0);printf("socket success!\n");}}return ((void *)1);
}

int main(int argc, char *argv) {int fd;int err;volatile int keyvalue, i, count, j;struct input_event ev;pthread_t tid1, tid2, tid3, tid4, tid5;void *tret;DIR *dir;struct dirent *ptr;char *p = NULL;int n = 0;char name[MAX_NUM][NAME_LEN];pnode node_tmp;err = pthread_create(&tid1, NULL, touch_thread, NULL);err = pthread_create(&tid2, NULL, exec_thread, NULL);err = pthread_create(&tid3, NULL, socket_thread, NULL);sleep(1);err = pthread_create(&tid4, NULL, ctrl_thread, NULL);err = pthread_create(&tid5, NULL, lrc_thread, NULL);if(chdir("/mymusic") < 0)perror("chdir");if((dir = opendir("/mymusic")) == NULL){perror("opendir");exit(EXIT_FAILURE);}while((ptr = readdir(dir)) != NULL){if((p=strstr(ptr->d_name, ".mp3")) != NULL){strcpy(name[n++], ptr->d_name);}}cur_head = create_list(name, n);print_list(cur_head);for(;;){play(cur_head);sleep(1);}pthread_join(tid1, &tret);pthread_join(tid2, &tret);pthread_join(tid3, &tret);pthread_join(tid4, &tret);pthread_join(tid5, &tret);closedir(dir);close(fd);return 0;
}

来张图片吧

有的东西看着很难但只要你做就会有成果，有的东西看着很简单当你做的时候也许会遇到很多问题，高手就是从遇到问题解决问题走过来的。

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