Vlc audio and video development (1) environment construction (qt)

Source: WeChat Official Account "Programming Learning Base"

Introduction

• VLC is a free and open source cross-platform multimedia player and framework that can play most multimedia files, as well as DVD, audio CD, VCD and various streaming media protocols.
• Since VLC is completely open source, we can obtain all the project source code and carry out secondary development on this basis

VLC official website: http://www.videolan.org/

VLC source code download address: http://download.videolan.org/pub/videolan/vlc/2.2.4/

The test code refers to Raytheon's blog: http://blog.csdn.net/leixiaohua1020/article/details/42363079

Qt configuration vlc environment

Qt environment building tutorial

Download vlc source code

Click the download address to choose win64/win32, I chose to win64download the end of .7z, I downloaded the vlc-2.2.4-win64.7z

following after downloading and decompressing,

and finding the sdk folder after decompressing, this folder is very important

simple_libvlc_qt_player

Submit the code for the first time, the simplest libvlc player

1. Create a console project (refer to the qt environment construction tutorial )

2. Configuration .profile

Add the following code at the bottom

win32{
    
    
    INCLUDEPATH += $$PWD/sdk/include
    LIBS += -L$$PWD/sdk/lib -llibvlc -llibvlccore
}else{
    
    
    INCLUDEPATH += /usr/local/include
    LIBS += -L/usr/local/lib -lvlc -lvlccore
}

3. Configure SDK

Copy the decompressed sdk folder to the main.cpp folder to

see the test codesimple_libvlc_qt_player

Run the result to play cuc_ieschool.flvthis video

4. Test code

#include <QCoreApplication>
#include <Windows.h>
#include "vlc/vlc.h"

using namespace std;

int main(int argc, char* argv[])
{
    
    
    libvlc_instance_t* inst;
    libvlc_media_player_t* mp;
    libvlc_media_t* m;

    libvlc_time_t length;
    int width;
    int height;
    int wait_time = 5000;

    const char* version;
    version = libvlc_get_version();
    printf("version: %s\n", version);
    inst = libvlc_new(NULL, NULL);

    char filename[1024] = "../simple_libvlc_qt_player/cuc_ieschool.flv";
    //m = libvlc_media_new_location (inst,"rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov" );
    m = libvlc_media_new_path (inst,filename);
    mp = libvlc_media_player_new_from_media(m);
    libvlc_media_release(m);
    libvlc_media_player_play(mp);

    //wait until the tracks are created
    _sleep(wait_time);
    length = libvlc_media_player_get_length(mp);
    width = libvlc_video_get_width(mp);
    height = libvlc_video_get_height(mp);
    printf("Stream Duration: %ds\n", length / 1000);
    printf("Resolution: %d x %d\n", width, height);
    //Let it play
    _sleep(length - wait_time);

    // Stop playing
    libvlc_media_player_stop(mp);
    libvlc_media_player_release(mp);
    libvlc_release(inst);

    return 0;
}

5. Program release

On simple_libvlc_qt_playerto publish a release folder inside the dynamic link library into the packed program directory folder

project address

GitHub project address: https://github.com/ADeRoy/libvlc_qt_demo

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