Ejemplos de gst_query_remove_nth_allocation_pool en C++ (Cpp)

Ejemplo n.º 1

Archivo: gstvideorate.c Proyecto: Kurento/gst-plugins-base

static gboolean
gst_video_rate_propose_allocation (GstBaseTransform * trans,
    GstQuery * decide_query, GstQuery * query)
{
  GstBaseTransformClass *klass = GST_BASE_TRANSFORM_CLASS (parent_class);
  gboolean res;

  /* We should always be passthrough */
  g_return_val_if_fail (decide_query == NULL, FALSE);

  res = klass->propose_allocation (trans, NULL, query);

  if (res) {
    guint i = 0;
    guint n_allocation;
    guint down_min = 0;

    n_allocation = gst_query_get_n_allocation_pools (query);

    while (i < n_allocation) {
      GstBufferPool *pool = NULL;
      guint size, min, max;

      gst_query_parse_nth_allocation_pool (query, i, &pool, &size, &min, &max);

      if (min == max) {
        if (pool)
          gst_object_unref (pool);
        gst_query_remove_nth_allocation_pool (query, i);
        n_allocation--;
        down_min = MAX (min, down_min);
        continue;
      }

      gst_query_set_nth_allocation_pool (query, i, pool, size, min + 1, max);
      if (pool)
        gst_object_unref (pool);
      i++;
    }

    if (n_allocation == 0) {
      GstCaps *caps;
      GstVideoInfo info;

      gst_query_parse_allocation (query, &caps, NULL);
      gst_video_info_from_caps (&info, caps);

      gst_query_add_allocation_pool (query, NULL, info.size, down_min + 1, 0);
    }
  }

  return res;
}

Ejemplo n.º 2

Archivo: gstrfbsrc.c Proyecto: GrokImageCompression/gst-plugins-bad

static gboolean
gst_rfb_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
{
  GstBufferPool *pool = NULL;
  guint size, min = 1, max = 0;
  GstStructure *config;
  GstCaps *caps;
  GstVideoInfo info;
  gboolean ret;

  gst_query_parse_allocation (query, &caps, NULL);

  if (!caps || !gst_video_info_from_caps (&info, caps))
    return FALSE;

  while (gst_query_get_n_allocation_pools (query) > 0) {
    gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);

    /* TODO We restrict to the exact size as we don't support strides or
     * special padding */
    if (size == info.size)
      break;

    gst_query_remove_nth_allocation_pool (query, 0);
    gst_object_unref (pool);
    pool = NULL;
  }

  if (pool == NULL) {
    /* we did not get a pool, make one ourselves then */
    pool = gst_video_buffer_pool_new ();
    size = info.size;
    min = 1;
    max = 0;
    gst_query_add_allocation_pool (query, pool, size, min, max);
  }

  config = gst_buffer_pool_get_config (pool);
  gst_buffer_pool_config_set_params (config, caps, size, min, max);

  ret = gst_buffer_pool_set_config (pool, config);
  gst_object_unref (pool);

  return ret;
}