108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "config.h"
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#include "display.h"
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#include "buffer.h"
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#include "layer.h"
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#include "log.h"
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#include <guacamole/client.h>
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#include <stdlib.h>
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guacenc_buffer* guacenc_display_get_buffer(guacenc_display* display,
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int index) {
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/* Transform index to buffer space */
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int internal_index = -index - 1;
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/* Do not lookup / allocate if index is invalid */
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if (internal_index < 0 || internal_index >= GUACENC_DISPLAY_MAX_BUFFERS) {
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guacenc_log(GUAC_LOG_WARNING, "Buffer index out of bounds: %i", index);
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return NULL;
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}
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/* Lookup buffer, allocating a new buffer if necessary */
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guacenc_buffer* buffer = display->buffers[internal_index];
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if (buffer == NULL) {
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/* Attempt to allocate buffer */
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buffer = guacenc_buffer_alloc();
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if (buffer == NULL) {
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guacenc_log(GUAC_LOG_WARNING, "Buffer allocation failed");
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return NULL;
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}
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/* All non-layer buffers must autosize */
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buffer->autosize = true;
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/* Store buffer within display for future retrieval / management */
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display->buffers[internal_index] = buffer;
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}
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return buffer;
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}
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int guacenc_display_free_buffer(guacenc_display* display,
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int index) {
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/* Transform index to buffer space */
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int internal_index = -index - 1;
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/* Do not lookup / free if index is invalid */
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if (internal_index < 0 || internal_index >= GUACENC_DISPLAY_MAX_BUFFERS) {
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guacenc_log(GUAC_LOG_WARNING, "Buffer index out of bounds: %i", index);
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return 1;
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}
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/* Free buffer (if allocated) */
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guacenc_buffer_free(display->buffers[internal_index]);
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/* Mark buffer as freed */
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display->buffers[internal_index] = NULL;
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return 0;
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}
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guacenc_buffer* guacenc_display_get_related_buffer(guacenc_display* display,
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int index) {
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/* Retrieve underlying buffer of layer if a layer is requested */
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if (index >= 0) {
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/* Retrieve / allocate layer (if possible */
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guacenc_layer* layer = guacenc_display_get_layer(display, index);
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if (layer == NULL)
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return NULL;
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/* Return underlying buffer */
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return layer->buffer;
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}
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/* Otherwise retrieve buffer directly */
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return guacenc_display_get_buffer(display, index);
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}
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