1.调用摄像头，拍照，存储照片

1.摄像头文件

/******* 摄像头相关类 *****/#include <QCamera> /*** 摄像头类 ***/#include <QCameraInfo> /*** 系统摄像头属性类 ***/#include <QCameraImageCapture> /*** 用于记录摄像头数据的类 ***/

2.定义对象，（写在 头文件类里面）

QCamera *m_Camera; /*** 摄像机类对象 ***/QCameraImageCapture *CameraImageCapture; /*** 用于记录摄像头数据的类 ***/

3. 获取可用的摄像头

函数： bool QCameraInfo::isNull() const Returns true if this QCameraInfo is null or invalid.

bool QCameraInfo:：isNull（） 如果此QCameraInfo为空或无效，则返回true。

QList<QCameraInfo> cameras = QCameraInfo::availableCameras();//获取可用摄像头设备列表int index = cameras.size();//判断可用的摄像头有几个for(int i=0;i<index;i++){if(cameras.at(i).isNull() == false){qDebug() << "有效摄像头:" << cameras.at(i).description();//摄像头的设备名称ui->comboBox->addItem(cameras.at(i).description()); //将摄像头添加到UI界面摄像头列表中}}

4.打开摄像头， 的步骤代码

/**** 摄像头初始化 ****/QCameraInfo camreinfo = QCameraInfo::defaultCamera(); /*** 获取系统默认摄像头 ***/if(camreinfo.isNull() == true){QMessageBox::warning(this,"警告","系统没有可用摄像头");return ;}/**** 申请摄像头类空间 ****/m_Camera = new QCamera(camreinfo); // 直接使用系统默认的m_Camera->setCaptureMode(QCamera::CaptureStillImage);//设置捕捉模式为静态帧(图片形式)m_Camera->setCaptureMode(QCamera::CaptureMode::CaptureViewfinder);//将采集到取景器中m_Camera->setViewfinder((ui->VideoWidget)); //将摄像头数据输出到 UI 界面显示m_Camera->start(); //摄像头打开

重点: (不然你的视频不能播放)

m_Camera->setViewfinder((ui->VideoWidget)); //将摄像头数据输出到 UI 界面显示

QCamera::setViewfinder(QVideoWidget *viewfinder)

可以看到我们 的成员是QVideoWidget ，所以我们需要把， QWidget 提升为QVideoWidget.

5.打开 摄像头记录类 准备拍照 （捕捉照片，保存图片）

/***** 将摄像头放入摄像头记录类中，方便拍照 ******/CameraImageCapture = new QCameraImageCapture(m_Camera);CameraImageCapture->setCaptureDestination(QCameraImageCapture::CaptureToFile);/*********** 捕获信号函数 imageCaptured(int,QImage) 拍了一张照,发出该信号 ********/connect(CameraImageCapture,SIGNAL(imageCaptured(int,QImage)),this,SLOT(slot_CameraImageCapture(int,QImage)));//这个信号是捕获 图片

信号：

void QCameraImageCapture：：imageCaptured（int id，const QImage&preview）

捕获请求id为的帧时发出的信号，但尚未处理和保存。可以向用户显示帧预览。

槽函数：

void Widget::slot_CameraImageCapture(int id, QImage image){ui->label->setPixmap(QPixmap::fromImage(image));//把捕获的照片存入 标签里面}void Widget::slot_pushButton_capture(){CameraImageCapture->capture("D:\\QT\\hqyj_coding\\day06_camera\\gw.jpg");}//函数 capture 是保存图片， 参数是路径 + 名称

ui->设计界面，

头文件

#ifndef WIDGET_H#define WIDGET_H#include <QWidget>/******* 摄像头相关类 *****/#include <QCamera> /*** 摄像头类 ***/#include <QCameraInfo> /*** 系统摄像头属性类 ***/#include <QCameraImageCapture> /*** 用于记录摄像头数据的类 ***/#include <QMessageBox>#include <QDebug> /*** debug 调试类 ****/namespace Ui {class Widget;}class Widget : public QWidget{Q_OBJECTpublic:explicit Widget(QWidget *parent = 0);~Widget();private:Ui::Widget *ui;QCamera *m_Camera; /*** 摄像机类对象 ***/QCameraImageCapture *CameraImageCapture; /*** 用于记录摄像头数据的类 ***/public slots:void slot_pushButton_camrae_open();void slot_CameraImageCapture(int id,QImage image);void slot_pushButton_capture();};#endif // WIDGET_H

.cpp 文件

#include "widget.h"#include "ui_widget.h"Widget::Widget(QWidget *parent) :QWidget(parent),ui(new Ui::Widget){ui->setupUi(this);QList<QCameraInfo> cameras = QCameraInfo::availableCameras();//获取可用摄像头设备列表int index = cameras.size();for(int i=0;i<index;i++){if(cameras.at(i).isNull() == false){qDebug() << "有效摄像头:" << cameras.at(i).description();//摄像头的设备名称ui->comboBox->addItem(cameras.at(i).description()); //将摄像头添加到UI界面摄像头列表中}}connect(ui->pushButton,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_camrae_open()));connect(ui->pushButton_2,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_capture()));}Widget::~Widget(){delete ui;}void Widget::slot_pushButton_camrae_open(){if(ui->pushButton->text() == "打开摄像头"){/**** 摄像头初始化 ****/QCameraInfo camreinfo = QCameraInfo::defaultCamera(); /*** 获取系统默认摄像头 ***/if(camreinfo.isNull() == true){QMessageBox::warning(this,"警告","系统没有可用摄像头");return ;}/**** 申请摄像头类空间 ****/m_Camera = new QCamera(camreinfo); // 直接使用系统默认的 /// 或者调用上面的可用设备， 上面不是有码？？ 就是存入 comBox里面的数据 m_Camera->setCaptureMode(QCamera::CaptureStillImage);//设置捕捉模式为静态帧(图片形式)m_Camera->setCaptureMode(QCamera::CaptureMode::CaptureViewfinder);//将采集到取景器中m_Camera->setViewfinder((ui->VideoWidget)); //将摄像头数据输出到 UI 界面显示m_Camera->start(); //摄像头打开ui->pushButton->setText("关闭摄像头");ui->pushButton_2->setEnabled(true);/***** 将摄像头放入摄像头记录类中，方便拍照 ******/CameraImageCapture = new QCameraImageCapture(m_Camera);CameraImageCapture->setCaptureDestination(QCameraImageCapture::CaptureToFile);/*********** 捕获信号函数 imageCaptured(int,QImage) 拍了一张照,发出该信号 ********/connect(CameraImageCapture,SIGNAL(imageCaptured(int,QImage)),this,SLOT(slot_CameraImageCapture(int,QImage)));}else{delete m_Camera; //释放他的空间delete CameraImageCapture; //释放他的空间ui->pushButton->setText("打开摄像头");ui->pushButton_2->setEnabled(false);}}void Widget::slot_CameraImageCapture(int id, QImage image){ui->label->setPixmap(QPixmap::fromImage(image));}void Widget::slot_pushButton_capture(){CameraImageCapture->capture("D:\\QT\\hqyj_coding\\day06_camera\\gw.jpg");}

2.关于 阿里云 的人脸识别运用 （加载图片（注册），对比 ）

1. 和上面差不多，只是加了 , HTTP 的网络请求 模式，

2.建立信号，

connect(m_http,SIGNAL(finished(QNetworkReply*)),this,SLOT(slot_http_finished(QNetworkReply*)));//有信号可以读取的时候，调用槽函数

3. 第一步获取 发送请求 得到访问_打开的命令 和 状态码，

void Camera::slot_http_finished(QNetworkReply *Reply){// 响应的状态码为 200 , 表示请求成功int stat = Reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();QByteArray Reply_data = Reply->readAll();//读取网站的访问命令qDebug() << "Reply_data = " << Reply_data << endl;if(stat == 200) /*** 成功数据 ***/{//获取响应信息QByteArray byteArray = QString(Reply_data).toUtf8();//把数据转型QJsonDocument JsonDocument = QJsonDocument::fromJson(byteArray); //转为JSON格式字符串if(JsonDocument.isObject() == true){QJsonObject JsonObject = JsonDocument.object();if(JsonObject.find("access_token") != JsonObject.end()){access_token = JsonObject["access_token"].toString();qDebug() << "access_token:" << access_token << endl;}}}}

4.之后包括，注册和 搜索功能， 首先，我们的 讲 搜索功能

百度云技术文档

搜索

void Camera::slot_pushButton_find(){/**** 获取用户输入的信息 *****/QString group = ui->comboBox_group->currentText();QString ID = ui->lineEdit_ID->text();QString name = ui->lineEdit_user_info->text();/***** 组装http访问百度 *****/QString baidu = "/rest/2.0/face/v3/search?access_token=%1";QString url = baidu.arg(access_token);/**** 图片转码为BASE64编码 ****/QImage Image = ui->label_pixmap->pixmap()->toImage(); //获取 QLabel 标签的图片QByteArray data; /*** 用于存储图片的二进制数据 ***/QBuffer buffer(&data); /*** 将 data 作为缓冲区对象 ****/Image.save(&buffer,"png"); /***将图片保存到 buf -> data 缓存区 为 png 格式 ***/QString buf = data.toBase64(); /** BASE64转码 **//*** 组装JSON数据 ****/QJsonObject json;json["image"] = buf;json["image_type"] = "BASE64";json["group_id_list"] = "Student,Teather"; //多组使用逗号隔开/** 注意:人脸注册完毕后，生效时间一般为5s以内，之后便可以进行人脸搜索或认证操作 **//**** HTTP 请求POST 百度 ****/QNetworkRequest Request(url);Request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json"); //请求头 类型 JSON 格式QByteArray byte = QJsonDocument(json).toJson(QJsonDocument::Compact); //将JSON类内容转为字符串方便发送/**** 执行post请求 ****/m_http->post(Request,byte);}

5.注册功能：

百度云技术文档

void Camera::slot_pushButton_regiset(){/**** 获取用户输入的信息 *****/QString group = ui->comboBox_group->currentText();QString ID = ui->lineEdit_ID->text();QString name = ui->lineEdit_user_info->text();/***** 组装http访问百度 *****/QString baidu = "/rest/2.0/face/v3/faceset/user/add?access_token=%1";QString url = baidu.arg(access_token);/**** 图片转码为BASE64编码 ****/QImage Image = ui->label_pixmap->pixmap()->toImage(); //获取 QLabel 标签的图片QByteArray data; /*** 用于存储图片的二进制数据 ***/QBuffer buffer(&data); /*** 将 data 作为缓冲区对象 ****/Image.save(&buffer,"png"); /***将图片保存到 buf -> data 缓存区 为 png 格式 ***/QString buf = data.toBase64(); /** BASE64转码 **//*** 组装JSON数据 ****/QJsonObject json;json["image"] = buf;json["image_type"] = "BASE64";json["group_id"] = group;json["user_id"] = ID;json["user_info"] = name;/** 注意:人脸注册完毕后，生效时间一般为5s以内，之后便可以进行人脸搜索或认证操作 **//**** HTTP 请求POST 百度 ****/QNetworkRequest Request(url);Request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json"); //请求头 类型 JSON 格式QByteArray byte = QJsonDocument(json).toJson(QJsonDocument::Compact); //将JSON类内容转为字符串方便发送/**** 执行post请求 ****/m_http->post(Request,byte);}

所有的代码 （自己去加 百度云的 密钥， 私钥 ）（用别人的有危险， 百度云有免费的，只要自己注册）

ui 界面设计

头文件

#ifndef CAMERA_H#define CAMERA_H#include <QMainWindow>/******* 摄像头相关类 *****/#include <QCamera> /*** 摄像头类 ***/#include <QCameraInfo> /*** 系统摄像头属性类 ***/#include <QCameraImageCapture> /*** 用于记录摄像头数据的类 ***/#include <QDebug> /*** debug 调试类 ****//******* 网络相关类 ****/#include <QNetworkAccessManager> /** 网络访问类 ***/#include <QNetworkReply> /** 网络数据结果类 ***//******* QJSON 相关类 *****/#include <QJsonDocument>#include <QJsonObject>QT_BEGIN_NAMESPACEnamespace Ui { class Camera; }QT_END_NAMESPACEclass Camera : public QMainWindow{Q_OBJECTpublic:Camera(QWidget *parent = nullptr);~Camera();private:Ui::Camera *ui;QCamera *m_Camera; /*** 摄像机类对象 ***/QCameraImageCapture *CameraImageCapture; /*** 用于记录摄像头数据的类 ***/QNetworkAccessManager *m_http; /**网络访问对象 **//***** 百度人脸库秘钥 ****/QString AppID = "";QString API_Key = "";QString Secret_Key = "";QString access_token = "";public slots:void slot_pushButton_camrae_open();void slot_CameraImageCapture(int id,QImage image);void slot_pushButton_capture();void slot_http_finished(QNetworkReply* Reply);void slot_pushButton_regiset();void slot_pushButton_find();};#endif // CAMERA_H

.cpp

#include "camera.h"#include "ui_camera.h"#include <QMessageBox>#include <QBuffer>Camera::Camera(QWidget *parent): QMainWindow(parent), ui(new Ui::Camera){ui->setupUi(this);/**** 获取系统可用摄像头列表 ****/QList<QCameraInfo> cameras = QCameraInfo::availableCameras();//获取可用摄像头设备列表int index = cameras.size();for(int i=0;i<index;i++){if(cameras.at(i).isNull() == false){qDebug() << "有效摄像头:" << cameras.at(i).description();//摄像头的设备名称ui->comboBox->addItem(cameras.at(i).description()); //将摄像头添加到UI界面摄像头列表中}}connect(ui->pushButton_camrae_open,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_camrae_open()));connect(ui->pushButton_capture,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_capture()));/****** HTTP网络访问类初始化 *****/m_http = new QNetworkAccessManager(this);connect(m_http,SIGNAL(finished(QNetworkReply*)),this,SLOT(slot_http_finished(QNetworkReply*)));QString url("/oauth/2.0/token?grant_type=client_credentials&client_id=%1&client_secret=%2&");url = url.arg(API_Key,Secret_Key);m_http->get(QNetworkRequest(QUrl(url)));/****** 按钮发送 http 的 post 请求 ******/connect(ui->pushButton_regiset,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_regiset()));connect(ui->pushButton_find,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_find()));}void Camera::slot_pushButton_find(){/**** 获取用户输入的信息 *****/QString group = ui->comboBox_group->currentText();QString ID = ui->lineEdit_ID->text();QString name = ui->lineEdit_user_info->text();/***** 组装http访问百度 *****/QString baidu = "/rest/2.0/face/v3/search?access_token=%1";QString url = baidu.arg(access_token);/**** 图片转码为BASE64编码 ****/QImage Image = ui->label_pixmap->pixmap()->toImage(); //获取 QLabel 标签的图片QByteArray data; /*** 用于存储图片的二进制数据 ***/QBuffer buffer(&data); /*** 将 data 作为缓冲区对象 ****/Image.save(&buffer,"png"); /***将图片保存到 buf -> data 缓存区 为 png 格式 ***/QString buf = data.toBase64(); /** BASE64转码 **//*** 组装JSON数据 ****/QJsonObject json;json["image"] = buf;json["image_type"] = "BASE64";json["group_id_list"] = "Student,Teather"; //多组使用逗号隔开/** 注意:人脸注册完毕后，生效时间一般为5s以内，之后便可以进行人脸搜索或认证操作 **//**** HTTP 请求POST 百度 ****/QNetworkRequest Request(url);Request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json"); //请求头 类型 JSON 格式QByteArray byte = QJsonDocument(json).toJson(QJsonDocument::Compact); //将JSON类内容转为字符串方便发送/**** 执行post请求 ****/m_http->post(Request,byte);}void Camera::slot_pushButton_regiset(){/**** 获取用户输入的信息 *****/QString group = ui->comboBox_group->currentText();QString ID = ui->lineEdit_ID->text();QString name = ui->lineEdit_user_info->text();/***** 组装http访问百度 *****/QString baidu = "/rest/2.0/face/v3/faceset/user/add?access_token=%1";QString url = baidu.arg(access_token);/**** 图片转码为BASE64编码 ****/QImage Image = ui->label_pixmap->pixmap()->toImage(); //获取 QLabel 标签的图片QByteArray data; /*** 用于存储图片的二进制数据 ***/QBuffer buffer(&data); /*** 将 data 作为缓冲区对象 ****/Image.save(&buffer,"png"); /***将图片保存到 buf -> data 缓存区 为 png 格式 ***/QString buf = data.toBase64(); /** BASE64转码 **//*** 组装JSON数据 ****/QJsonObject json;json["image"] = buf;json["image_type"] = "BASE64";json["group_id"] = group;json["user_id"] = ID;json["user_info"] = name;/** 注意:人脸注册完毕后，生效时间一般为5s以内，之后便可以进行人脸搜索或认证操作 **//**** HTTP 请求POST 百度 ****/QNetworkRequest Request(url);Request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json"); //请求头 类型 JSON 格式QByteArray byte = QJsonDocument(json).toJson(QJsonDocument::Compact); //将JSON类内容转为字符串方便发送/**** 执行post请求 ****/m_http->post(Request,byte);}void Camera::slot_http_finished(QNetworkReply *Reply){qDebug()<<"这里输出";// 响应的状态码为 200 , 表示请求成功int stat = Reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();QByteArray Reply_data = Reply->readAll();qDebug() << "Reply_data = " << Reply_data << endl;ui->textEdit_JSON->setText(QJsonDocument::fromJson(Reply_data).toJson()); //将其转为JSON字符串if(stat == 200) /*** 成功数据 ***/{//获取响应信息QByteArray byteArray = QString(Reply_data).toUtf8();QJsonDocument JsonDocument = QJsonDocument::fromJson(byteArray); //转为JSON格式字符串if(JsonDocument.isObject() == true){QJsonObject JsonObject = JsonDocument.object();if(JsonObject.find("access_token") != JsonObject.end()){access_token = JsonObject["access_token"].toString();qDebug() << "access_token:" << access_token << endl;}}}}Camera::~Camera(){delete ui;}void Camera::slot_pushButton_camrae_open(){if(ui->pushButton_camrae_open->text() == "打开摄像头"){/**** 摄像头初始化 ****/QCameraInfo camreinfo = QCameraInfo::defaultCamera(); /*** 获取系统默认摄像头 ***/if(camreinfo.isNull() == true){QMessageBox::warning(this,"警告","系统没有可用摄像头");return ;}/**** 申请摄像头类空间 ****/m_Camera = new QCamera(camreinfo); // 直接使用系统默认的m_Camera->setCaptureMode(QCamera::CaptureStillImage);//设置捕捉模式为静态帧(图片形式)m_Camera->setCaptureMode(QCamera::CaptureMode::CaptureViewfinder);//将采集到取景器中m_Camera->setViewfinder(ui->VideoWidget); //将摄像头数据输出到 UI 界面显示m_Camera->start(); //摄像头打开ui->pushButton_camrae_open->setText("关闭摄像头");ui->pushButton_capture->setEnabled(true);/***** 将摄像头放入摄像头记录类中，方便拍照 ******/CameraImageCapture = new QCameraImageCapture(m_Camera);CameraImageCapture->setCaptureDestination(QCameraImageCapture::CaptureToFile);/*********** 捕获信号函数 imageCaptured(int,QImage) 拍了一张照,发出该信号 ********/connect(CameraImageCapture,SIGNAL(imageCaptured(int,QImage)),this,SLOT(slot_CameraImageCapture(int,QImage)));}else{delete m_Camera; //释放他的空间delete CameraImageCapture; //释放他的空间ui->pushButton_camrae_open->setText("打开摄像头");ui->pushButton_capture->setEnabled(false);}}void Camera::slot_CameraImageCapture(int id, QImage image){ui->label_pixmap->setPixmap(QPixmap::fromImage(image));}void Camera::slot_pushButton_capture(){CameraImageCapture->capture("王老师.jpg");}

3.文字转语音 录音，播放录音

1.首先在。pro 文件里面添加这个 （文字转语音的模块）

2.头文件

/******** 音频相关类 *********/#include <QAudioDeviceInfo> //音频属性类#include <QAudioFormat> //音频参数#include <QAudioInput> //音频输入#include <QAudioOutput> //音频输出/******** 文件相关类 **********/#include <QFile>/******** 文字转语音类 ********/#include <QTextToSpeech>

3.建立对象

QAudioInput *m_AudioInput;//音频输入QAudioOutput *m_AudioOutput;//音频输出QFile *m_file;//文件对象QTextToSpeech *m_speech;//文字转语音对象

4.获取电脑上的音频输入，输出设备

/******* 获取系统可用的音频设备 ********/QList<QAudioDeviceInfo> AudioDevice_Outputs = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);for(int i = 0; i < AudioDevice_Outputs.size() ; i++){QString name = AudioDevice_Outputs[i].deviceName();//获取名字ui->comboBox_audio_ouput->addItem(name);//写入 ui 设计界面的设计框中}QList<QAudioDeviceInfo> AudioDevice_Inputs = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);for(int i = 0; i < AudioDevice_Inputs.size() ; i++){QString name = AudioDevice_Inputs[i].deviceName();//获取名字ui->comboBox_audio_input->addItem(name);//写入 ui 设计界面的设计框中}

5.配置音频参数 （好被识别，）

QAudioFormat format;format.setSampleRate(16000);//设置采样率:16000MHzformat.setChannelCount(1);//设置采集通道数:1通道format.setSampleSize(16);//设置样本大小:16比特format.setCodec("audio/pcm");//设置录音格式为:pcm格式

6.检测输入设备是否可以使用， 我们默认使用系统默认的输入设备

QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice(); /** 使用默认输入 ***/if(info.isFormatSupported(format) == false)//检测配置是否支持该音频设备{format = info.nearestFormat(format);//只用最接近配置的音频配置}

7.实列化对象，打开空间音频 准备 存入数据

/****** 申请音频空间 *****/m_AudioInput = new QAudioInput(format,this);m_AudioOutput = new QAudioOutput(format,this);

8.准备文字转 音频的函数

/***** 打印电脑的TTS语音引擎 *****/QStringList TextToSpeechs = QTextToSpeech::availableEngines();for(QString text : TextToSpeechs){qDebug() << "语音引擎:" << text << endl;}m_speech = new QTextToSpeech(this); //文字转语音对象实列化

9.录制音频

void Audio::slot_pushButton_input() /*** 录制音频 ***/{if(ui->pushButton_input->text() == "开始录制"){m_file = new QFile("./录音.wav");//音乐文件实列化 ，开辟空间m_file->open(QIODevice::ReadWrite | QIODevice::Truncate);//打开文件，没有创造， 可读可写if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}m_AudioInput->start(m_file);//开始录制ui->pushButton_input->setText("停止录制");}else if(ui->pushButton_input->text() == "停止录制"){m_AudioInput->stop();//关闭录制m_file->close(); //关闭文件ui->pushButton_input->setText("开始录制");}}

10.播放音频

void Audio::slot_pushButton_output(){m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}m_AudioOutput->start(m_file);//播放音频}

11.当文件播放完成 ，删除文件， （包含信号 连接函数）

void Audio::slot_AudioOutput(QAudio::State state){if(state == QAudio::IdleState)//状态播放完成{m_AudioOutput->stop();delete m_file;}}

12.文字转语音，（需要系统自带的tts 的语音翻译工具）（文本转语音）

void Audio::slot_pushButton_transition()//转化函数{QString text = ui->lineEdit_Text->text();//获取文字m_speech->setVolume(1);//播放音量 最大 1 最小 0m_speech->say(text);//播放获取的文字}

13.假如你的 tts不行 不能 文字转语音采用下面这种方法，百度云直接申请文字转语音，

/text2audio?lan=zh&ctp=1&cuid=abcdxxx&tok=1.a6b7dbd428f731035f771b8d****.86400.1292922000-2346678-124328&tex=%e7%99%be%e5%ba%a6%e4%bd%a0%e5%a5%bd&vol=9&per=0&spd=5&pit=5&aue=3// 这是一个正常MP3的下载url// tex在实际开发过程中请urlencode2次

代码：

QString text=ui->lineEdit_Text->text();QByteArray url="/text2audio?";url.append(QString("&lan=zh&cuid= MAC 物理地址，自己的 &ctp=1&tok="));url.append(QUrl::toPercentEncoding(access_token));//这个后面还可以加别的参数 声音， 列表里面的东西 url.append("&tex=");url.append(QUrl::toPercentEncoding(text));qDebug()<<url;media_player->setMedia(QUrl::fromLocalFile(url));media_player->play();

ui 设计界面

头文件

#ifndef AUDIO_H#define AUDIO_H#include <QWidget>/******** 音频相关类 *********/#include <QAudioDeviceInfo> //音频属性类#include <QAudioFormat> //音频参数#include <QAudioInput> //音频输入#include <QAudioOutput> //音频输出/******** 文件相关类 **********/#include <QFile>/******** 文字转语音类 ********/#include <QTextToSpeech>#include <QMediaPlayer>QT_BEGIN_NAMESPACEnamespace Ui { class Audio; }QT_END_NAMESPACEclass Audio : public QWidget{Q_OBJECTpublic:Audio(QWidget *parent = nullptr);~Audio();private:Ui::Audio *ui;QAudioInput *m_AudioInput;//音频输入QAudioOutput *m_AudioOutput;//音频输出QFile *m_file;//文件对象QTextToSpeech *m_speech;//文字转语音对象QMediaPlayer* media_player;//没有 tts 的播放对象public slots:void slot_pushButton_input();void slot_pushButton_output();void slot_AudioOutput(QAudio::State state);void slot_pushButton_transition();};#endif // AUDIO_H

#include "audio.h"#include "ui_audio.h"#include <QDebug>Audio::Audio(QWidget *parent): QWidget(parent), ui(new Ui::Audio){ui->setupUi(this);media_player = new QMediaPlayer(this);//mp3播放/******* 获取系统可用的音频设备 ********/QList<QAudioDeviceInfo> AudioDevice_Outputs = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);for(int i = 0; i < AudioDevice_Outputs.size() ; i++){QString name = AudioDevice_Outputs[i].deviceName();ui->comboBox_audio_ouput->addItem(name);}QList<QAudioDeviceInfo> AudioDevice_Inputs = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);for(int i = 0; i < AudioDevice_Inputs.size() ; i++){QString name = AudioDevice_Inputs[i].deviceName();ui->comboBox_audio_input->addItem(name);}/****** 配置音频参数 ******/QAudioFormat format;format.setSampleRate(16000);//设置采样率:16000MHzformat.setChannelCount(1);//设置采集通道数:1通道format.setSampleSize(16);//设置样本大小:16比特format.setCodec("audio/pcm");//设置录音格式为:pcm格式QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice(); /** 使用默认输入 ***/if(info.isFormatSupported(format) == false)//检测配置是否支持该音频设备{format = info.nearestFormat(format);//只用最接近配置的音频配置}/****** 申请音频空间 *****/m_AudioInput = new QAudioInput(format,this);m_AudioOutput = new QAudioOutput(format,this);/****** 录音 ******/connect(ui->pushButton_input,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_input()));connect(ui->pushButton_output,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_output()));connect(m_AudioOutput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(slot_AudioOutput(QAudio::State)));/***** 打印电脑的TTS语音引擎 *****/QStringList TextToSpeechs = QTextToSpeech::availableEngines();for(QString text : TextToSpeechs){qDebug() << "语音引擎:" << text << endl;}m_speech = new QTextToSpeech(this); //文字转语音对象实列化connect(ui->pushButton_transition,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_transition()));}void Audio::slot_pushButton_transition()//转化函数{QString text = ui->lineEdit_Text->text();//获取文字m_speech->setVolume(1);//播放音量 最大 1 最小 0m_speech->say(text);//播放的内容}Audio::~Audio(){Sdelete ui;}void Audio::slot_pushButton_input() /*** 录制音频 ***/{if(ui->pushButton_input->text() == "开始录制"){m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite | QIODevice::Truncate);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}m_AudioInput->start(m_file);ui->pushButton_input->setText("停止录制");}else if(ui->pushButton_input->text() == "停止录制"){m_AudioInput->stop();//关闭录制m_file->close(); //关闭文件ui->pushButton_input->setText("开始录制");}}void Audio::slot_pushButton_output(){m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}m_AudioOutput->start(m_file);}void Audio::slot_AudioOutput(QAudio::State state){if(state == QAudio::IdleState){m_AudioOutput->stop();delete m_file;}}

4.百度云的语音识别功能

1.基础配置和上面的出不多，只是多了语音识别为 文字的功能。。

2.百度云的开始 的步骤：（开辟一个列表就行了）

主要是 连接百度云的 语音翻译模式

void Audio::slot_pushButton_discern(){/***** 读取音频文件 *****/m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}QByteArray requestData = m_file->readAll(); //读取文件所有内容m_file->close();;;;;QString buf = requestData.toBase64(); //转码 BASE 64/****** 组装网址 **************/QUrl url("/server_api");/****** 组装JSON *************/QJsonObject json;json["format"] = "pcm";json["rate"] = 16000;json["dev_pid"] = 1537;json["channel"] = 1;json["token"] = access_token;json["cuid"] = "q12993";json["len"] = requestData.size(); //语音文字真是的byte长度json["speech"] = buf;/****** 设置头部 **********/QNetworkRequest Request(url);Request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json");QByteArray send_json = QJsonDocument(json).toJson();m_http->post(Request,send_json);}

3.获取语音翻译：

void Audio::slot_http_finished(QNetworkReply *Reply){// 响应的状态码为 200 , 表示请求成功int stat = Reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();QByteArray Reply_data = Reply->readAll();qDebug() << "Reply_data = " << Reply_data << endl;ui->textEdit_JSON->setText(QJsonDocument::fromJson(Reply_data).toJson()); //将其转为JSON字符串if(stat == 200) /*** 成功数据 ***/{//获取响应信息QByteArray byteArray = QString(Reply_data).toUtf8();QJsonDocument JsonDocument = QJsonDocument::fromJson(byteArray); //转为JSON格式字符串if(JsonDocument.isObject() == true){QJsonObject JsonObject = JsonDocument.object();if(JsonObject.find("access_token") != JsonObject.end()){access_token = JsonObject["access_token"].toString();qDebug() << "access_token:" << access_token << endl;}if(JsonObject.find("err_msg") != JsonObject.end() && JsonObject.find("result") != JsonObject.end()){QJsonArray JsonArray = JsonObject["result"].toArray();QString result = JsonArray[0].toString();//最后 JSON 形式的数据转为 QSTring类型的数据ui->lineEdit_Json->setText(result);/***** 判断结果 *****/if(result.contains("打开") == true){if(result.contains("卧室灯") == true){m_speech->say("卧室灯已打开");}else if(result.contains("厨房灯") == true){m_speech->say("厨房灯已打开");}}else if(result.contains("关闭") == true){if(result.contains("卧室灯") == true){m_speech->say("卧室灯已关闭");}else if(result.contains("厨房灯") == true){m_speech->say("厨房灯已关闭");}}}}}}

ui 界面

头文件 （密钥自己 搞， 创建一个百度云就行了， 1元可以玩一个月，）

#ifndef AUDIO_H#define AUDIO_H#include <QWidget>/******** 音频相关类 *********/#include <QAudioDeviceInfo> //音频属性类#include <QAudioFormat> //音频参数#include <QAudioInput> //音频输入#include <QAudioOutput> //音频输出/******** 文件相关类 **********/#include <QFile>/******** 文字转语音类 ********/#include <QTextToSpeech>/******* 网络相关类 ****/#include <QNetworkAccessManager> /** 网络访问类 ***/#include <QNetworkReply> /** 网络数据结果类 ***//******* QJSON 相关类 *****/#include <QJsonDocument>#include <QJsonObject>#include <QJsonArray>QT_BEGIN_NAMESPACEnamespace Ui { class Audio; }QT_END_NAMESPACEclass Audio : public QWidget{Q_OBJECTpublic:Audio(QWidget *parent = nullptr);~Audio();private:Ui::Audio *ui;QAudioInput *m_AudioInput;QAudioOutput *m_AudioOutput;QFile *m_file;QTextToSpeech *m_speech;//文字转语音对象QNetworkAccessManager *m_http; /**网络访问对象 **//***** 百度人脸库秘钥 ****/QString AppID = "";QString API_Key = "";QString Secret_Key = "";QString access_token = "";public slots:void slot_pushButton_input();void slot_pushButton_output();void slot_AudioOutput(QAudio::State state);void slot_pushButton_transition();void slot_http_finished(QNetworkReply* Reply);void slot_pushButton_discern();};#endif // AUDIO_H

.cpp 文件

#include "audio.h"#include "ui_audio.h"#include <QDebug>Audio::Audio(QWidget *parent): QWidget(parent), ui(new Ui::Audio){ui->setupUi(this);/******* 获取系统可用的音频设备 ********/QList<QAudioDeviceInfo> AudioDevice_Outputs = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);for(int i = 0; i < AudioDevice_Outputs.size() ; i++){QString name = AudioDevice_Outputs[i].deviceName();ui->comboBox_audio_ouput->addItem(name);}QList<QAudioDeviceInfo> AudioDevice_Inputs = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);for(int i = 0; i < AudioDevice_Inputs.size() ; i++){QString name = AudioDevice_Inputs[i].deviceName();ui->comboBox_audio_input->addItem(name);}/****** 配置音频参数 ******/QAudioFormat format;format.setSampleRate(16000);//设置采样率:16000MHzformat.setChannelCount(1);//设置采集通道数:1通道format.setSampleSize(16);//设置样本大小:16比特format.setCodec("audio/pcm");//设置录音格式为:pcm格式QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice(); /** 使用默认输入 ***/if(info.isFormatSupported(format) == false)//检测配置是否支持该音频设备{format = info.nearestFormat(format);//只用最接近配置的音频配置}/****** 申请音频空间 *****/m_AudioInput = new QAudioInput(format,this);m_AudioOutput = new QAudioOutput(format,this);/****** 录音 ******/connect(ui->pushButton_input,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_input()));connect(ui->pushButton_output,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_output()));connect(m_AudioOutput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(slot_AudioOutput(QAudio::State)));/***** 打印电脑的TTS语音引擎 *****/QStringList TextToSpeechs = QTextToSpeech::availableEngines();for(QString text : TextToSpeechs){qDebug() << "语音引擎:" << text << endl;}qDebug()<<"没有";m_speech = new QTextToSpeech(this);qDebug()<<"1111";connect(ui->pushButton_transition,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_transition()));/****** HTTP网络访问类初始化 *****/m_http = new QNetworkAccessManager(this);connect(m_http,SIGNAL(finished(QNetworkReply*)),this,SLOT(slot_http_finished(QNetworkReply*)));QString url("/oauth/2.0/token?grant_type=client_credentials&client_id=%1&client_secret=%2&");url = url.arg(API_Key,Secret_Key);m_http->get(QNetworkRequest(QUrl(url))); //获取 access_tokenconnect(ui->pushButton_discern,SIGNAL(clicked(bool)),this,SLOT(slot_pushButton_discern()));}void Audio::slot_pushButton_discern(){/***** 读取音频文件 *****/m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}QByteArray requestData = m_file->readAll(); //读取文件所有内容m_file->close();;;;;QString buf = requestData.toBase64(); //转码 BASE 64/****** 组装网址 **************/QUrl url("/server_api");/****** 组装JSON *************/QJsonObject json;json["format"] = "pcm";json["rate"] = 16000;json["dev_pid"] = 1537;json["channel"] = 1;json["token"] = access_token;json["cuid"] = "q12993";json["len"] = requestData.size(); //语音文字真是的byte长度json["speech"] = buf;/****** 设置头部 **********/QNetworkRequest Request(url);Request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json");QByteArray send_json = QJsonDocument(json).toJson();m_http->post(Request,send_json);}void Audio::slot_pushButton_transition(){QString text = ui->lineEdit_Text->text();m_speech->setVolume(1);m_speech->say(text);}void Audio::slot_http_finished(QNetworkReply *Reply){// 响应的状态码为 200 , 表示请求成功int stat = Reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();QByteArray Reply_data = Reply->readAll();qDebug() << "Reply_data = " << Reply_data << endl;ui->textEdit_JSON->setText(QJsonDocument::fromJson(Reply_data).toJson()); //将其转为JSON字符串if(stat == 200) /*** 成功数据 ***/{//获取响应信息QByteArray byteArray = QString(Reply_data).toUtf8();QJsonDocument JsonDocument = QJsonDocument::fromJson(byteArray); //转为JSON格式字符串if(JsonDocument.isObject() == true){QJsonObject JsonObject = JsonDocument.object();if(JsonObject.find("access_token") != JsonObject.end()){access_token = JsonObject["access_token"].toString();qDebug() << "access_token:" << access_token << endl;}if(JsonObject.find("err_msg") != JsonObject.end() && JsonObject.find("result") != JsonObject.end()){QJsonArray JsonArray = JsonObject["result"].toArray();QString result = JsonArray[0].toString();ui->lineEdit_Json->setText(result);/***** 判断结果 *****/if(result.contains("打开") == true){if(result.contains("卧室灯") == true){m_speech->say("卧室灯已打开");}else if(result.contains("厨房灯") == true){m_speech->say("厨房灯已打开");}}else if(result.contains("关闭") == true){if(result.contains("卧室灯") == true){m_speech->say("卧室灯已关闭");}else if(result.contains("厨房灯") == true){m_speech->say("厨房灯已关闭");}}}}}}Audio::~Audio(){delete ui;}void Audio::slot_pushButton_input() /*** 录制音频 ***/{if(ui->pushButton_input->text() == "开始录制"){m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite | QIODevice::Truncate);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}m_AudioInput->start(m_file);ui->pushButton_input->setText("停止录制");}else if(ui->pushButton_input->text() == "停止录制"){m_AudioInput->stop();//关闭录制m_file->close(); //关闭文件ui->pushButton_input->setText("开始录制");}}void Audio::slot_pushButton_output(){m_file = new QFile("./录音.wav");m_file->open(QIODevice::ReadWrite);if(m_file->isOpen() == false){ //打开失败delete m_file;return ;}m_AudioOutput->start(m_file);}void Audio::slot_AudioOutput(QAudio::State state){if(state == QAudio::IdleState){m_AudioOutput->stop();delete m_file;}}

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