| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #ifndef GUACENC_LAYER_H |
| #define GUACENC_LAYER_H |
| |
| #include "config.h" |
| #include "buffer.h" |
| |
| /** |
| * The value assigned to the parent_index property of a guacenc_layer if it has |
| * no parent. |
| */ |
| #define GUACENC_LAYER_NO_PARENT -1 |
| |
| /** |
| * A visible Guacamole layer. |
| */ |
| typedef struct guacenc_layer { |
| |
| /** |
| * The actual image contents of this layer, as well as this layer's size |
| * (width and height). |
| */ |
| guacenc_buffer* buffer; |
| |
| /** |
| * The index of the layer that contains this layer. If this layer is the |
| * default layer (and thus has no parent), this will be |
| * GUACENC_LAYER_NO_PARENT. |
| */ |
| int parent_index; |
| |
| /** |
| * The X coordinate of the upper-left corner of this layer within the |
| * Guacamole display. |
| */ |
| int x; |
| |
| /** |
| * The Y coordinate of the upper-left corner of this layer within the |
| * Guacamole display. |
| */ |
| int y; |
| |
| /** |
| * The relative stacking order of this layer with respect to other sibling |
| * layers. |
| */ |
| int z; |
| |
| /** |
| * The opacity of this layer, where 0 is completely transparent and 255 is |
| * completely opaque. |
| */ |
| int opacity; |
| |
| /** |
| * The internal buffer used by to record the state of this layer in the |
| * previous frame and to render additional frames. |
| */ |
| guacenc_buffer* frame; |
| |
| } guacenc_layer; |
| |
| /** |
| * Allocates and initializes a new layer object. This allocation is independent |
| * of the Guacamole video encoder display; the allocated guacenc_layer will not |
| * automatically be associated with the active display. |
| * |
| * @return |
| * A newly-allocated and initialized guacenc_layer, or NULL if allocation |
| * fails. |
| */ |
| guacenc_layer* guacenc_layer_alloc(); |
| |
| /** |
| * Frees all memory associated with the given layer object. If the layer |
| * provided is NULL, this function has no effect. |
| * |
| * @param layer |
| * The layer to free, which may be NULL. |
| */ |
| void guacenc_layer_free(guacenc_layer* layer); |
| |
| #endif |
| |