添加VLC录像API

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。