GstGLAPI
gchar * gst_gl_api_to_string (GstGLAPI api);
GstGLAPI api
GstGLAPI gst_gl_api_from_string (const gchar *api_s);
const gchar *api_s
gchar * gst_gl_platform_to_string (GstGLPlatform platform);
GstGLPlatform platform
GstGLPlatform gst_gl_platform_from_string (const gchar *platform_s);
const gchar *platform_s
GST_GL_API_NONE
GST_GL_API_OPENGL
GST_GL_API_OPENGL3
GST_GL_API_GLES1
GST_GL_API_GLES2
GST_GL_API_ANY
GST_GL_PLATFORM_NONE
GST_GL_PLATFORM_EGL
GST_GL_PLATFORM_GLX
GST_GL_PLATFORM_WGL
GST_GL_PLATFORM_CGL
GST_GL_PLATFORM_EAGL
GST_GL_PLATFORM_ANY
#define GST_GL_API_GLES1_NAME "gles1"
#define GST_GL_API_GLES2_NAME "gles2"
#define GST_GL_API_OPENGL3_NAME "opengl3"
#define GST_GL_API_OPENGL_NAME "opengl"