Qt android 开发环境搭建-CFANZ编程社区

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开发环境搭建

windows 开发环境搭建

windows下安装搭建android开发环境

Qt在线安装

Qt 安卓开发环境搭建

linux 开发环境搭建

开发测试

在这里插入图片描述

简单的测试

开发引入第三方库

测试vlc部分代码

#include "widget.h"

#include <QApplication>
#include <vlc/vlc.h>
#include <QDebug>
#include <QMutex>
#include "main.h"

struct Context {
    QMutex mutex;
    uchar *pixels;
};


CIns* CIns::m_ins = nullptr;

static void *lock(void *opaque, void **planes)
{
    struct Context *ctx = (struct Context *)opaque;
    ctx->mutex.lock();

    // 告诉 VLC 将解码的数据放到缓冲区中
    *planes = ctx->pixels;

    return nullptr;
}

// 获取 argb 图片并保存到文件中
static void unlock(void *opaque, void *picture, void *const *planes)
{
    Q_UNUSED(picture);

    struct Context *ctx = (struct Context *)opaque;
    unsigned char *data = static_cast<unsigned char *>(*planes);
    static int frameCount = 1;

    QImage image(data, 512, 288, QImage::Format_ARGB32);
//    image.save(QString("frame_%1.png").arg(frameCount++));
    emit CIns::Ins()->SigImage(image);

    ctx->mutex.unlock();
}

static void display(void *opaque, void *picture)
{
    Q_UNUSED(picture);

    (void)opaque;
}


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    QObject::connect(CIns::Ins(), &CIns::SigImage, &w, &Widget::SlotImage);
    const char* const vlc_args[] = {
            "--demux=h264",
            "--ipv4",
            "--no-prefer-system-codecs",
            "--rtsp-caching=300",
            "--network-caching=500",	//网络额外缓存值 (ms)
            "--rtsp-frame-buffer-size=10000000",
            "--rtsp-tcp",				//RTSP采用TCP传输方式
    };

    libvlc_instance_t * inst;
    libvlc_media_player_t *mp;
    libvlc_media_t *m;
    struct Context ctx;
    ctx.pixels = new uchar[512 * 288 * 4];
    memset(ctx.pixels, 0, 512 * 288 * 4);

    //libvlc_time_t length;

    /* Load the VLC engine */
    inst = libvlc_new (sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args);
    QString strUrl = "rtsp://wowzaec2demo.streamlock.net/vod/mp4";
    m = libvlc_media_new_location (inst, strUrl.toStdString().c_str());
    mp = libvlc_media_player_new_from_media (m);
//    libvlc_media_player_set_hwnd(mp, (void *)wgt.winId());

    // 设置回调，用于提取帧或者在界面上显示。
    libvlc_video_set_callbacks(mp, lock, unlock, display, &ctx);
    libvlc_video_set_format(mp, "RGBA", 512, 288, 512 * 4);

    libvlc_media_release (m);
    libvlc_media_player_play (mp);

    int ret = a.exec();

    libvlc_media_player_stop (mp);

    // Free the media_player
    libvlc_media_player_release (mp);

    libvlc_release (inst);

    return ret;

参考文档

配置Qt5.12.3的安卓开发环境
Qt5.14.2在Android项目中添加第三方库（.a，.so）
android开发cmake编译引入第三方库的常用写法