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基于RK3568/RK3588/全志H3/飞腾芯片/音视频通话程序/语音对讲/视频对讲/实时性好/极低延迟

article 2025/9/16 18:46:01

一、前言说明

近期收到几个需求都是做音视频通话，很多人会选择用webrtc的方案，这个当然是个不错的方案，但是依赖的东西太多，而且相关组件代码量很大，开发难度大。所以最终选择自己属性的方案，那就是推流拉流，采集端负责采集本地摄像头或者桌面，编码推流到流媒体服务器，然后要拉取对方的视音频，就是播放对应的rtsp地址即可，其实也可以是rtmp等地址，一般流媒体服务程序还提供各种http/flv等格式的拉流，方便各种场景需求，比如网页上可以直接播放flv或者webrtc的流。

为了使得使用更方便，还特意增加了可自定义悬浮画面位置，指定左上角、右上角、左下角、右下角、自定义位置和大小。还支持固定画中画功能，可交换主画面和浮窗画面，可设置画面左右排列等布局方式。考虑到客户的实际需求，还支持自定义水印，包括文字和图片水印，支持多个水印，指定任意位置。

二、效果图

在这里插入图片描述

三、相关代码

#include "frmconfig.h"
#include "frmmain.h"
#include "ui_frmmain.h"
#include "qthelper.h"
#include "apphelper.h"
#include "osdgraph.h"
#include "ffmpegthread.h"
#include "ffmpegthreadcheck.h"frmMain::frmMain(QWidget *parent) : QWidget(parent), ui(new Ui::frmMain)
{ui->setupUi(this);this->initForm();this->installEventFilter(this);QMetaObject::invokeMethod(this, "formChanged", Qt::QueuedConnection);
}frmMain::~frmMain()
{delete ui;
}void frmMain::savePos()
{AppConfig::FormMax = this->isMaximized();if (!AppConfig::FormMax) {AppConfig::FormGeometry = this->geometry();}AppConfig::writeConfig();
}bool frmMain::eventFilter(QObject *watched, QEvent *event)
{//尺寸发生变化或者窗体移动位置记住窗体位置int type = event->type();if (type == QEvent::Resize || type == QEvent::Move) {QMetaObject::invokeMethod(this, "savePos", Qt::QueuedConnection);} else if (type == QEvent::Close) {audioInput->stop(false);audioOutput->stop(false);exit(0);}//尺寸发生变化重新调整小预览窗体的位置if (this->isVisible() && type == QEvent::Resize) {this->formChanged();}return QWidget::eventFilter(watched, event);
}void frmMain::initForm()
{//初始化输入输出视频控件int decodeType = AppConfig::DecodeType;AppHelper::initVideoWidget(ui->videoInput, decodeType);AppHelper::initVideoWidget(ui->videoOutput, decodeType);//初始化输入输出音频线程audioInput = new FFmpegThread(this);audioOutput = new FFmpegThread(this);checkInput = new FFmpegThreadCheck(audioInput, this);AppHelper::initAudioThread(audioInput, ui->levelInput, decodeType);AppHelper::initAudioThread(audioOutput, ui->levelOutput, decodeType);//输入打开成功后立即推流connect(audioInput, SIGNAL(receivePlayStart(int)), this, SLOT(receivePlayStart(int)));connect(ui->videoInput, SIGNAL(sig_receivePlayStart(int)), this, SLOT(receivePlayStart(int)));ui->ckInput->setChecked(AppConfig::MuteInput ? Qt::Checked : Qt::Unchecked);ui->ckOutput->setChecked(AppConfig::MuteOutput ? Qt::Checked : Qt::Unchecked);if (AppConfig::StartServer) {on_btnStart_clicked();}
}void frmMain::clearLevel()
{ui->levelInput->setLevel(0);ui->levelOutput->setLevel(0);
}void frmMain::formChanged()
{AppHelper::changeWidget(ui->videoInput, ui->videoOutput, ui->gridLayout, NULL);
}void frmMain::receivePlayStart(int time)
{QObject *obj = sender();if (obj == ui->videoInput) {
#ifdef betaversionOsdGraph::testOsd(ui->videoInput);
#endifui->videoInput->recordStart(AppConfig::VideoPush);} else if (obj == audioInput) {audioInput->recordStart(AppConfig::AudioPush);}
}void frmMain::on_btnStart_clicked()
{if (ui->btnStart->text() == "启动服务") {if (AppConfig::VideoUrl == "video=" || AppConfig::AudioUrl == "audio=") {QtHelper::showMessageBoxError("请先打开系统设置, 选择对应的视音频设备");//return;}ui->videoInput->open(AppConfig::VideoUrl);ui->videoOutput->open(AppConfig::VideoPull);audioInput->setMediaUrl(AppConfig::AudioUrl);audioOutput->setMediaUrl(AppConfig::AudioPull);audioInput->play();audioOutput->play();checkInput->start();ui->btnStart->setText("停止服务");} else {ui->videoInput->stop();ui->videoOutput->stop();audioInput->stop();audioOutput->stop();checkInput->stop();ui->btnStart->setText("启动服务");QMetaObject::invokeMethod(this, "clearLevel", Qt::QueuedConnection);}AppConfig::StartServer = (ui->btnStart->text() == "停止服务");AppConfig::writeConfig();
}void frmMain::on_btnConfig_clicked()
{static frmConfig *config = NULL;if (!config) {config = new frmConfig;connect(config, SIGNAL(formChanged()), this, SLOT(formChanged()));}config->show();config->activateWindow();
}void frmMain::on_ckInput_stateChanged(int arg1)
{bool muted = (arg1 != 0);audioInput->setMuted(muted);AppConfig::MuteInput = muted;AppConfig::writeConfig();
}void frmMain::on_ckOutput_stateChanged(int arg1)
{bool muted = (arg1 != 0);audioOutput->setMuted(muted);AppConfig::MuteOutput = muted;AppConfig::writeConfig();
}

四、相关地址

国内站点：https://gitee.com/feiyangqingyun
国际站点：https://github.com/feiyangqingyun
个人作品：https://blog.csdn.net/feiyangqingyun/article/details/97565652
文件地址：https://pan.baidu.com/s/1d7TH_GEYl5nOecuNlWJJ7g 提取码：01jf 文件名：bin_video_call。