guacamole-spice-protocol/src/guacenc/display.c

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/*
* Copyright (C) 2016 Glyptodon, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "config.h"
#include "display.h"
#include "log.h"
#include <guacamole/client.h>
#include <guacamole/timestamp.h>
#include <stdlib.h>
int guacenc_display_sync(guacenc_display* display, guac_timestamp timestamp) {
/* Verify timestamp is not decreasing */
if (timestamp < display->last_sync) {
guacenc_log(GUAC_LOG_DEBUG, "Decreasing sync timestamp");
return 1;
}
/* Update timestamp of display */
display->last_sync = timestamp;
/* STUB */
return 0;
}
guacenc_layer* guacenc_display_get_layer(guacenc_display* display,
int index) {
/* Do not lookup / allocate if index is invalid */
if (index < 0 || index > GUACENC_DISPLAY_MAX_LAYERS) {
guacenc_log(GUAC_LOG_DEBUG, "Layer index out of bounds: %i", index);
return NULL;
}
/* Lookup layer, allocating a new layer if necessary */
guacenc_layer* layer = display->layers[index];
if (layer == NULL) {
/* Attempt to allocate layer */
layer = guacenc_layer_alloc();
if (layer == NULL) {
guacenc_log(GUAC_LOG_DEBUG, "Layer allocation failed");
return NULL;
}
/* Store layer within display for future retrieval / management */
display->layers[index] = layer;
}
return layer;
}
int guacenc_display_free_layer(guacenc_display* display,
int index) {
/* Do not lookup / allocate if index is invalid */
if (index < 0 || index > GUACENC_DISPLAY_MAX_LAYERS) {
guacenc_log(GUAC_LOG_DEBUG, "Layer index out of bounds: %i", index);
return 1;
}
/* Free layer (if allocated) */
guacenc_layer_free(display->layers[index]);
/* Mark layer as freed */
display->layers[index] = NULL;
return 0;
}
guacenc_display* guacenc_display_alloc() {
return (guacenc_display*) calloc(1, sizeof(guacenc_display));
}
int guacenc_display_free(guacenc_display* display) {
int i;
/* Ignore NULL display */
if (display == NULL)
return 0;
/* Free all buffers */
for (i = 0; i < GUACENC_DISPLAY_MAX_BUFFERS; i++)
free(display->buffers[i]);
/* Free all layers */
for (i = 0; i < GUACENC_DISPLAY_MAX_LAYERS; i++)
guacenc_layer_free(display->layers[i]);
/* Free all streams */
for (i = 0; i < GUACENC_DISPLAY_MAX_STREAMS; i++)
free(display->image_streams[i]);
free(display);
return 0;
}