C++ (Cpp) gst_gl_display_gen_fbo Examples

Example #1

File: visual-gl.c Project: Distrotech/gst-plugins-bad

static gboolean
gst_visual_gl_src_setcaps (GstPad * pad, GstCaps * caps)
{
  GstVisualGL *visual = GST_VISUAL_GL (gst_pad_get_parent (pad));
  GstStructure *structure;

  structure = gst_caps_get_structure (caps, 0);

  GST_DEBUG_OBJECT (visual, "src pad got caps %" GST_PTR_FORMAT, caps);

  if (!gst_structure_get_int (structure, "width", &visual->width))
    goto error;
  if (!gst_structure_get_int (structure, "height", &visual->height))
    goto error;
  if (!gst_structure_get_fraction (structure, "framerate", &visual->fps_n,
          &visual->fps_d))
    goto error;

  /* precalc some values */
  visual->spf =
      gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
  visual->duration =
      gst_util_uint64_scale_int (GST_SECOND, visual->fps_d, visual->fps_n);

  gst_gl_display_gen_texture (visual->display, &visual->midtexture,
      visual->width, visual->height);

  gst_gl_display_gen_fbo (visual->display, visual->width, visual->height,
      &visual->fbo, &visual->depthbuffer);

  gst_object_unref (visual);
  return TRUE;

  /* ERRORS */
error:
  {
    GST_DEBUG_OBJECT (visual, "error parsing caps");
    gst_object_unref (visual);
    return FALSE;
  }
}

Example #2

File: gstglfilter.c Project: zsx/ossbuild

static GstFlowReturn
gst_gl_filter_prepare_output_buffer (GstBaseTransform * trans,
    GstBuffer * inbuf, gint size, GstCaps * caps, GstBuffer ** buf)
{
  GstGLFilter *filter = NULL;
  GstGLBuffer *gl_inbuf = GST_GL_BUFFER (inbuf);
  GstGLBuffer *gl_outbuf = NULL;

  filter = GST_GL_FILTER (trans);

  if (filter->display == NULL) {
    GstGLFilterClass *filter_class = GST_GL_FILTER_GET_CLASS (filter);

    filter->display = g_object_ref (gl_inbuf->display);

    //blocking call, generate a FBO
    gst_gl_display_gen_fbo (filter->display, filter->width, filter->height,
        &filter->fbo, &filter->depthbuffer);

    if (filter_class->display_init_cb != NULL) {
      gst_gl_display_thread_add (filter->display, gst_gl_filter_start_gl,
          filter);
    }

    if (filter_class->onInitFBO)
      filter_class->onInitFBO (filter);
  }

  gl_outbuf = gst_gl_buffer_new (filter->display,
      filter->width, filter->height);

  *buf = GST_BUFFER (gl_outbuf);
  gst_buffer_set_caps (*buf, caps);

  if (gl_outbuf->texture)
    return GST_FLOW_OK;
  else
    return GST_FLOW_UNEXPECTED;
}