添加VLC录像API

来源：互联网发布：塔里木农垦大学知乎编辑：程序博客网时间：2024/05/21 09:59

转自： http://m.blog.csdn.net/blog/shulianghe/19200753

最近使用VLC播放RTSP数据想在本地截图录像，但libvlc中并不包含录像api，网上找到一些资料，自己添加这个接口并测试成功。接口主要是按照官方网站来做的（https://patches.videolan.org/patch/606/）。我是用的源码是最新的，编译过程中很顺利，前提是安装好各种依赖包。测试代码如下：

#include <vlc/vlc.h>#include <assert.h>#include <stdio.h>#include <stdlib.h>#include <stdbool.h>#include <unistd.h>static const char * test_defaults_args[] = {    "-v",    "--ignore-config",    "-I",    "dummy",    "--no-media-library"};static const int test_defaults_nargs =    sizeof (test_defaults_args) / sizeof (test_defaults_args[0]);int main (void){    libvlc_instance_t *instance;    libvlc_media_t *media;    libvlc_media_player_t *player;    const char * file = "rtsp://192.168.1.68";    //instance = libvlc_new (test_defaults_nargs, test_defaults_args);    instance = libvlc_new (0, NULL);    assert (instance != NULL);    //打开文件    //media = libvlc_media_new_path (instance, file);    //打开串流    media = libvlc_media_new_location (instance, file);    assert (media != NULL);    player = libvlc_media_player_new_from_media (media);    assert (player != NULL);    libvlc_media_release (media);    libvlc_media_player_play (player);    printf("play\n");    libvlc_media_player_record_start(player, "testfile");    printf("record\n");    sleep(10*10);    libvlc_video_take_snapshot(player,0,"test.jpg",0,0);    printf("%d\n", libvlc_media_player_get_state(player));    printf("stop record\n");    libvlc_media_player_record_stop(player);    printf("stop play\n");    //libvlc_media_player_stop (player);    printf("player release\n");    libvlc_media_player_release (player);    printf("release\n");    libvlc_release (instance);    return 0;}

很惊讶选项里面竟然没有C...。

编译：gcc test.c -o test -lvlc

运行之后截图录像均正常。这里libvlc_media_player_stop()注销是因为有些情况下这个函数会造成死锁，这个涉及到线程安全的一些问题，以后再研究。

0 0