cscg24-guacamole

CSCG 2024 Challenge 'Guacamole Mashup'
git clone https://git.sinitax.com/sinitax/cscg24-guacamole
Log | Files | Refs | sfeed.txt

display.c (3717B)

      1/*
      2 * Licensed to the Apache Software Foundation (ASF) under one
      3 * or more contributor license agreements.  See the NOTICE file
      4 * distributed with this work for additional information
      5 * regarding copyright ownership.  The ASF licenses this file
      6 * to you under the Apache License, Version 2.0 (the
      7 * "License"); you may not use this file except in compliance
      8 * with the License.  You may obtain a copy of the License at
      9 *
     10 *   http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing,
     13 * software distributed under the License is distributed on an
     14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     15 * KIND, either express or implied.  See the License for the
     16 * specific language governing permissions and limitations
     17 * under the License.
     18 */
     19
     20#include "config.h"
     21#include "cursor.h"
     22#include "display.h"
     23#include "video.h"
     24
     25#include <cairo/cairo.h>
     26#include <guacamole/mem.h>
     27
     28#include <stdlib.h>
     29
     30cairo_operator_t guacenc_display_cairo_operator(guac_composite_mode mask) {
     31
     32    /* Translate Guacamole channel mask into Cairo operator */
     33    switch (mask) {
     34
     35        /* Source */
     36        case GUAC_COMP_SRC:
     37            return CAIRO_OPERATOR_SOURCE;
     38
     39        /* Over */
     40        case GUAC_COMP_OVER:
     41            return CAIRO_OPERATOR_OVER;
     42
     43        /* In */
     44        case GUAC_COMP_IN:
     45            return CAIRO_OPERATOR_IN;
     46
     47        /* Out */
     48        case GUAC_COMP_OUT:
     49            return CAIRO_OPERATOR_OUT;
     50
     51        /* Atop */
     52        case GUAC_COMP_ATOP:
     53            return CAIRO_OPERATOR_ATOP;
     54
     55        /* Over (source/destination reversed) */
     56        case GUAC_COMP_ROVER:
     57            return CAIRO_OPERATOR_DEST_OVER;
     58
     59        /* In (source/destination reversed) */
     60        case GUAC_COMP_RIN:
     61            return CAIRO_OPERATOR_DEST_IN;
     62
     63        /* Out (source/destination reversed) */
     64        case GUAC_COMP_ROUT:
     65            return CAIRO_OPERATOR_DEST_OUT;
     66
     67        /* Atop (source/destination reversed) */
     68        case GUAC_COMP_RATOP:
     69            return CAIRO_OPERATOR_DEST_ATOP;
     70
     71        /* XOR */
     72        case GUAC_COMP_XOR:
     73            return CAIRO_OPERATOR_XOR;
     74
     75        /* Additive */
     76        case GUAC_COMP_PLUS:
     77            return CAIRO_OPERATOR_ADD;
     78
     79        /* If unrecognized, just default to CAIRO_OPERATOR_OVER */
     80        default:
     81            return CAIRO_OPERATOR_OVER;
     82
     83    }
     84
     85}
     86
     87guacenc_display* guacenc_display_alloc(const char* path, const char* codec,
     88        int width, int height, int bitrate) {
     89
     90    /* Prepare video encoding */
     91    guacenc_video* video = guacenc_video_alloc(path, codec, width, height, bitrate);
     92    if (video == NULL)
     93        return NULL;
     94
     95    /* Allocate display */
     96    guacenc_display* display =
     97        (guacenc_display*) guac_mem_zalloc(sizeof(guacenc_display));
     98
     99    /* Associate display with video output */
    100    display->output = video;
    101
    102    /* Allocate special-purpose cursor layer */
    103    display->cursor = guacenc_cursor_alloc();
    104
    105    return display;
    106
    107}
    108
    109int guacenc_display_free(guacenc_display* display) {
    110
    111    int i;
    112
    113    /* Ignore NULL display */
    114    if (display == NULL)
    115        return 0;
    116
    117    /* Finalize video */
    118    int retval = guacenc_video_free(display->output);
    119
    120    /* Free all buffers */
    121    for (i = 0; i < GUACENC_DISPLAY_MAX_BUFFERS; i++)
    122        guacenc_buffer_free(display->buffers[i]);
    123
    124    /* Free all layers */
    125    for (i = 0; i < GUACENC_DISPLAY_MAX_LAYERS; i++)
    126        guacenc_layer_free(display->layers[i]);
    127
    128    /* Free all streams */
    129    for (i = 0; i < GUACENC_DISPLAY_MAX_STREAMS; i++)
    130        guacenc_image_stream_free(display->image_streams[i]);
    131
    132    /* Free cursor */
    133    guacenc_cursor_free(display->cursor);
    134
    135    guac_mem_free(display);
    136    return retval;
    137
    138}
    139