GUI main

# 导入区域
from tkinter import *
from tkinter import messagebox
from tkinter.filedialog import *
import webbrowser,wave,requests,time,base64  # 百度语音要求对本地语音二进制数据进行base64编码
from pyaudio import PyAudio, paInt16

class Application(Frame):

    def __init__(self, master=None):
        super().__init__(master) #super()代表的是父类的定义，而不是父类对象
        self.master = master
        self.pack()
        self.createWidget()

    def createWidget(self):
        # ================创建一个图片管理类——设置背景===================
        global photo
        photo = PhotoImage(file="./image/bg.png")
        bgLabel = Label(self,image=photo,compound=CENTER,fg="white")
        bgLabel.pack(side=RIGHT)
        # ===============识别语音选择（默认普通话）========================
        ## 五选一，为了保证不选的情况就是普通话，在多处强调devpid=1536，完成后可修改重复
        v1 = StringVar(self)
        v1.set("普通话（默认）")
        om1 = OptionMenu(self, v1, "普通话（默认）", "普通话（带标点）", "英语", "粤语", "四川话")
        om1["width"] = 13
        om1.place(relx=0.62, rely=0.08)
        if v1.get() == "普通话（默认）":
            devpid = 1536
        elif v1.get() == "普通话（带标点）":
            devpid = 1567
        elif v1.get() == "英语":
            devpid = 1737
        elif v1.get() == "粤语":
            devpid = 1637
        elif v1.get() == "四川话":
            devpid = 1837
        else:
            devpid = 1536
        # ==================第1个功能——音频输入=========================
        ## 提示文字“本地音频输入”
        global photo01
        photo01 = PhotoImage(file="./image/choose.png")
        self.bt01 = Button(self, image=photo01)
        self.bt01.place(relx=0.11, rely=0.15)
        ## 输入框
        def choose_file():
            selectFileName = askopenfilename(title='选择文件')
            e.set(selectFileName)
        e = StringVar()
        self.entry01 = Entry(self,width=54,bd=8, textvariable=e)
        self.entry01.place(relx=0.33, rely=0.15)
        audio_path = self.entry01.get()
        ## 小文件夹Button用于找寻文件路径
        global photo02
        photo02 = PhotoImage(file="./image/q.png")
        self.bt02 = Button(self, image=photo02, command=choose_file)
        self.bt02.place(relx=0.81, rely=0.16)
        # ================第2个功能——实时输入=========================
        # 这两个输入需要用if elif语句，要不然前面的audio_path会被以下代码覆盖，不过目前只测试了实时输入没有问题
        ## 提示文字“实时输入”
        global photo03
        photo03 = PhotoImage(file="./image/realt.png")
        self.bt03 = Button(self, image=photo03)
        self.bt03.place(relx=0.11, rely=0.23)
        self.label01 = Label(self, text="请点击右方按钮，录音（时长为4秒）", width=54, height=1, bd=8,bg="white", fg="black", font=("黑体", 10))
        self.label01.place(relx=0.33, rely=0.238)
        ## 小喇叭按钮——录音
        ### 录音——变量初始化
        framerate = 16000   # 采样率
        num_samples = 2000  # 采样点
        channels = 1        # 声道
        sampwidth = 2       # 采样宽度2bytes
        audio_path = str(int(time.time())) + '.wav'
        ### 录音——保存音频文件
        def save_wave_file(filepath, data):
            wf = wave.open(filepath, 'wb')
            wf.setnchannels(channels)
            wf.setsampwidth(sampwidth)
            wf.setframerate(framerate)
            wf.writeframes(b''.join(data))
            wf.close()
        # ===============第3个功能——实时显示波形图和语谱图================
        # 还在研究用于画图的界面matplotlib如何嵌入tkinter中
        # 这代码可先看另一个文档
        # ===============第4个功能——音频输入与结果显示===================
        ## 提示文字“识别结果”
        global photo05
        photo05 = PhotoImage(file="./image/result.png")
        self.bt05 = Button(self, image=photo05)
        self.bt05.place(relx=0.11, rely=0.70)
        ## 初始化结果显示的文本框
        self.label02 = Label(self, width=54, height=1, bd=8, bg="white", fg="black")
        self.label02.place(relx=0.33, rely=0.71)
        ## 百度api
        def baidu_api(devpid=1536):
            ### 录音
            pa = PyAudio()
            # 打开一个新的音频stream
            stream = pa.open(format=paInt16, channels=channels,
                             rate=framerate, input=True, frames_per_buffer=num_samples)
            my_buf = []  # 存放录音数据
            # count = 0
            t = time.time()
            while time.time() < t + 4:  # 设置录音时间（秒）
                # 循环read, 每次read 2000frames
                string_audio_data = stream.read(num_samples)
                my_buf.append(string_audio_data)
            self.label01["text"] = "录音结束."
            save_wave_file(audio_path, my_buf)
            stream.close()
            # 组装url
            base_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=%s&client_secret=%s"
            APIKey = "0QKwKuAxo0u2fQZsAftmX0jc"
            SecretKey = "PdhfonU6eYYKeW5qfdqgzEUGxhE92hdG"
            # 获取token
            HOST = base_url % (APIKey, SecretKey)
            res = requests.post(HOST)
            TOKEN = res.json()['access_token']
            # 读入wav
            with open(audio_path, 'rb') as f:
                speech_data = f.read()
            try:
                FORMAT = 'wav'
                RATE = '16000'
                CHANNEL = 1
                CUID = '*******'
                SPEECH = base64.b64encode(speech_data).decode('utf-8')

                data = {
     
                    'format': FORMAT,
                    'rate': RATE,
                    'channel': CHANNEL,
                    'cuid': CUID,
                    'len': len(speech_data),
                    'speech': SPEECH,
                    'token': TOKEN,
                    'dev_pid': devpid
                }
                url = 'https://vop.baidu.com/server_api'
                headers = {
     'Content-Type': 'application/json'}
                # r=requests.post(url,data=json.dumps(data),headers=headers)
                r = requests.post(url, json=data, headers=headers)
                Result = r.json()
                if 'result' in Result:
                    self.label02["text"] = Result['result'][0]
                    return Result['result'][0]
                else:
                    self.label02["text"] = Result
                    return Result
            except:
                self.label02["text"] = '未能正确识别，请重试'
                return '未能正确识别，请重试'
        ## 小麦克风按钮
        global photo04
        photo04 = PhotoImage(file="./image/r.png")
        self.bt04 = Button(self, image=photo04, command=baidu_api)
        self.bt04.place(relx=0.81, rely=0.24)
        # ================第5个功能——用户完善数据库====================
        ## 提示文字“自定义数据库”，还没搞也需要速成
        global photo06
        photo06 = PhotoImage(file="./image/self.png")
        self.bt06 = Button(self, image=photo06)
        self.bt06.place(relx=0.11, rely=0.78)
        ## 小字部分，含百度网站链接，点击可跳转
        self.w01 = Text(self,width=56,height=6)
        self.w01.place(relx=0.33, rely=0.85)
        self.w01.insert(INSERT,"   good good study,day day up！百度，搜一下就知道"
                               "\n   请帮助我们完善数据库,"
                               "\n   查询并选择您所说的垃圾对应的类别")
        self.w01.tag_add("good", 1.3, 2.0)
        self.w01.tag_config("good", underline=True)
        def webshow(event):
            webbrowser.open("http://www.baidu.com")
        self.w01.tag_bind("good","",webshow)
        ## 四选一
        v = StringVar(self)
        v.set("可回收物")
        om = OptionMenu(self,v,"厨余垃圾","有害垃圾","其他垃圾","仍不清楚")
        om["width"]=10
        om.place(relx=0.5, rely=0.93)


if __name__=='__main__':
    root = Tk()
    root.resizable(width=False, height=False)
    root.title("语音识别垃圾分类小程序")
    root.iconbitmap('./image/favicon.ico')
    app = Application(master=root)
    root.mainloop()