| /* |
| * 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. |
| */ |
| |
| #include "config.h" |
| #include "display.h" |
| #include "layer.h" |
| #include "log.h" |
| #include "video.h" |
| |
| #include <guacamole/client.h> |
| #include <guacamole/timestamp.h> |
| |
| #include <assert.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_WARNING, "Decreasing sync timestamp"); |
| return 1; |
| } |
| |
| /* Update timestamp of display */ |
| display->last_sync = timestamp; |
| |
| /* Flatten display to default layer */ |
| if (guacenc_display_flatten(display)) |
| return 1; |
| |
| /* Retrieve default layer (guaranteed to not be NULL) */ |
| guacenc_layer* def_layer = guacenc_display_get_layer(display, 0); |
| assert(def_layer != NULL); |
| |
| /* Update video timeline */ |
| if (guacenc_video_advance_timeline(display->output, timestamp)) |
| return 1; |
| |
| /* Prepare frame for write upon next flush */ |
| guacenc_video_prepare_frame(display->output, def_layer->frame); |
| return 0; |
| |
| } |
| |