c++ 11 can embed raw text into code

sample.c

const char* vert = 
R"END(

#version 120
attribute vec2 position;
void main()
{
    gl_Position = vec4( position, 0.0, 1.0 );
}

)END";

static void
gst_azure_kinect_src_init (GstAzureKinectSrc * azurekinectsrc)
{

  gst_base_src_set_format (GST_BASE_SRC (azurekinectsrc), GST_FORMAT_TIME);
  gst_base_src_set_live (GST_BASE_SRC (azurekinectsrc), DEFAULT_IS_LIVE);

  azurekinectsrc->silent = FALSE;
  GST_DEBUG_OBJECT (azurekinectsrc,
      "%s" ,vert);
}