gstreamer获取视频采集卡的数据

gstreamer获取视频采集卡的视频数据

gstreamer可以用于采集硬件视频数据，转码，播放，传输等，但由于框架相对于FFmpeg较为小众，所以资料较少，整理一份从usb中取视频的demo，后续更新取出数据后转码的demo。

#include "Camera/gstCamera.h"
#include "../gstDisplay.h"
#include "CameraSDK.h"
#include "Base/gstUtils.h"
#include <iostream>
using namespace camerasdk;
void CameraBuffer(GstBuffer *gst_buffer,void* user_data){
   GstMapInfo map;
   //把buffer映射到map，这样我们就可以通过map.data取到buffer的数据
   if (gst_buffer_map (gst_buffer, &map, GST_MAP_READ)){
     AERROR << "buffer size =" <<  map.size;
     gst_buffer_unmap (gst_buffer, &map);  //解除映射
  }
}

int main(int argc, char *argv[]){
  CameraSDK_Init();
  CCameraOption option;
  option.m_width = 1920;
  option.m_height = 1080;
  option.m_frame_rate = 30;
  option.m_video_scale = false;
  option.m_resource = "/dev/video2";
  gstCamera *cam = gstCamera::Create(option);
  cam->SetBufferCBFun(CameraBufferCBFun, dis);
  cam->Open();
  cam->Close();
  delete cam;
  CameraSDK_Uninit();
  return 0;
}

sdk下载地址：https://download.csdn.net/download/tiaobolian6687/87617176