GUAC-236: Split massive display code into more reasonable files.
This commit is contained in:
Michael Jumper
parent
a24152df02
commit
960ee263e8
@ -38,6 +38,11 @@ noinst_HEADERS = \
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guacenc_SOURCES = \
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buffer.c \
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display.c \
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display-buffers.c \
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display-image-streams.c \
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display-flatten.c \
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display-layers.c \
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display-sync.c \
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encode.c \
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guacenc.c \
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image-stream.c \
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@ -26,7 +26,6 @@
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#include <cairo/cairo.h>
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#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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guacenc_buffer* guacenc_buffer_alloc() {
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110
src/guacenc/display-buffers.c
Normal file
110
src/guacenc/display-buffers.c
Normal file
@ -0,0 +1,110 @@
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/*
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* Copyright (C) 2016 Glyptodon, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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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 / 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 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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160
src/guacenc/display-flatten.c
Normal file
160
src/guacenc/display-flatten.c
Normal file
@ -0,0 +1,160 @@
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/*
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* Copyright (C) 2016 Glyptodon, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "display.h"
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#include "layer.h"
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#include <cairo/cairo.h>
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#include <stdlib.h>
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#include <string.h>
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/**
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* The Guacamole video encoder display related to the current qsort()
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* operation. As qsort() does not provide a means of passing arbitrary data to
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* the comparitor, this value must be set prior to invoking qsort() with
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* guacenc_display_layer_comparator.
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*/
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guacenc_display* __qsort_display;
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/**
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* Comparator which orders layer pointers such that (1) NULL pointers are last,
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* (2) layers with the same parent_index are adjacent, and (3) layers with the
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* same parent_index are ordered by Z.
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*
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* @see qsort()
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*/
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static int guacenc_display_layer_comparator(const void* a, const void* b) {
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guacenc_layer* layer_a = *((guacenc_layer**) a);
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guacenc_layer* layer_b = *((guacenc_layer**) b);
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/* If a is NULL, sort it to bottom */
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if (layer_a == NULL) {
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/* ... unless b is also NULL, in which case they are equal */
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if (layer_b == NULL)
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return 0;
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return 1;
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}
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/* If b is NULL (and a is not NULL), sort it to bottom */
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if (layer_b == NULL)
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return -1;
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/* Order such that the deepest layers are first */
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int a_depth = guacenc_display_get_depth(__qsort_display, layer_a);
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int b_depth = guacenc_display_get_depth(__qsort_display, layer_b);
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if (b_depth != a_depth)
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return b_depth - a_depth;
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/* Order such that sibling layers are adjacent */
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if (layer_b->parent_index != layer_a->parent_index)
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return layer_b->parent_index - layer_a->parent_index;
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/* Order sibling layers according to descending Z */
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return layer_b->z - layer_a->z;
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}
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int guacenc_display_flatten(guacenc_display* display) {
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int i;
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guacenc_layer* render_order[GUACENC_DISPLAY_MAX_LAYERS];
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/* Copy list of layers within display */
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memcpy(render_order, display->layers, sizeof(render_order));
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/* Sort layers by depth, parent, and Z */
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__qsort_display = display;
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qsort(render_order, GUACENC_DISPLAY_MAX_LAYERS, sizeof(guacenc_layer*),
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guacenc_display_layer_comparator);
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/* Reset layer frame buffers */
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for (i = 0; i < GUACENC_DISPLAY_MAX_LAYERS; i++) {
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/* Pull current layer, ignoring unallocated layers */
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guacenc_layer* layer = render_order[i];
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if (layer == NULL)
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continue;
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/* Get source buffer and destination frame buffer */
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guacenc_buffer* buffer = layer->buffer;
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guacenc_buffer* frame = layer->frame;
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/* Reset frame contents */
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guacenc_buffer_copy(frame, buffer);
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}
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/* Render each layer, in order */
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for (i = 0; i < GUACENC_DISPLAY_MAX_LAYERS; i++) {
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/* Pull current layer, ignoring unallocated layers */
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guacenc_layer* layer = render_order[i];
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if (layer == NULL)
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continue;
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/* Skip fully-transparent layers */
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if (layer->opacity == 0)
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continue;
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/* Ignore layers without a parent */
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int parent_index = layer->parent_index;
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if (parent_index == GUACENC_LAYER_NO_PARENT)
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continue;
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/* Retrieve parent layer, ignoring layers with invalid parents */
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guacenc_layer* parent = guacenc_display_get_layer(display, parent_index);
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if (parent == NULL)
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continue;
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/* Get source and destination frame buffer */
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guacenc_buffer* src = layer->frame;
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guacenc_buffer* dst = parent->frame;
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/* Ignore layers with empty buffers */
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cairo_surface_t* surface = src->surface;
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if (surface == NULL)
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continue;
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/* Ignore if parent has no pixels */
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cairo_t* cairo = dst->cairo;
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if (cairo == NULL)
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continue;
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/* Render buffer to layer */
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cairo_reset_clip(cairo);
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cairo_rectangle(cairo, layer->x, layer->y, src->width, src->height);
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cairo_clip(cairo);
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cairo_set_source_surface(cairo, surface, layer->x, layer->y);
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cairo_paint_with_alpha(cairo, layer->opacity / 255.0);
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}
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return 0;
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}
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84
src/guacenc/display-image-streams.c
Normal file
84
src/guacenc/display-image-streams.c
Normal file
@ -0,0 +1,84 @@
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/*
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* Copyright (C) 2016 Glyptodon, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "display.h"
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#include "image-stream.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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int guacenc_display_create_image_stream(guacenc_display* display, int index,
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int mask, int layer_index, const char* mimetype, int x, int y) {
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/* Do not lookup / allocate if index is invalid */
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if (index < 0 || index > GUACENC_DISPLAY_MAX_STREAMS) {
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guacenc_log(GUAC_LOG_WARNING, "Stream index out of bounds: %i", index);
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return 1;
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}
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/* Free existing stream (if any) */
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guacenc_image_stream_free(display->image_streams[index]);
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/* Associate new stream */
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guacenc_image_stream* stream = display->image_streams[index] =
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guacenc_image_stream_alloc(mask, layer_index, mimetype, x, y);
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/* Return zero only if stream is not NULL */
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return stream == NULL;
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}
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guacenc_image_stream* guacenc_display_get_image_stream(
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guacenc_display* display, int index) {
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/* Do not lookup / allocate if index is invalid */
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if (index < 0 || index > GUACENC_DISPLAY_MAX_STREAMS) {
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guacenc_log(GUAC_LOG_WARNING, "Stream index out of bounds: %i", index);
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return NULL;
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}
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/* Return existing stream (if any) */
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return display->image_streams[index];
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}
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int guacenc_display_free_image_stream(guacenc_display* display, int index) {
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/* Do not lookup / allocate if index is invalid */
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if (index < 0 || index > GUACENC_DISPLAY_MAX_STREAMS) {
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guacenc_log(GUAC_LOG_WARNING, "Stream index out of bounds: %i", index);
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return 1;
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}
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/* Free stream (if allocated) */
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guacenc_image_stream_free(display->image_streams[index]);
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/* Mark stream as freed */
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display->image_streams[index] = NULL;
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return 0;
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}
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102
src/guacenc/display-layers.c
Normal file
102
src/guacenc/display-layers.c
Normal file
@ -0,0 +1,102 @@
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/*
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* Copyright (C) 2016 Glyptodon, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
|
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* of this software and associated documentation files (the "Software"), to deal
|
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* in the Software without restriction, including without limitation the rights
|
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* 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:
|
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*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "display.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_layer* guacenc_display_get_layer(guacenc_display* display,
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int index) {
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/* Do not lookup / allocate if index is invalid */
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if (index < 0 || index > GUACENC_DISPLAY_MAX_LAYERS) {
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guacenc_log(GUAC_LOG_WARNING, "Layer index out of bounds: %i", index);
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return NULL;
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}
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/* Lookup layer, allocating a new layer if necessary */
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guacenc_layer* layer = display->layers[index];
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if (layer == NULL) {
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/* Attempt to allocate layer */
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layer = guacenc_layer_alloc();
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if (layer == NULL) {
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guacenc_log(GUAC_LOG_WARNING, "Layer allocation failed");
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return NULL;
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}
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/* The default layer has no parent */
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if (index == 0)
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layer->parent_index = GUACENC_LAYER_NO_PARENT;
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/* Store layer within display for future retrieval / management */
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display->layers[index] = layer;
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}
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return layer;
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}
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int guacenc_display_get_depth(guacenc_display* display, guacenc_layer* layer) {
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/* Non-existent layers have a depth of 0 */
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if (layer == NULL)
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return 0;
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/* Layers with no parent have a depth of 0 */
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if (layer->parent_index == GUACENC_LAYER_NO_PARENT)
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return 0;
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/* Retrieve parent layer */
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guacenc_layer* parent =
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guacenc_display_get_layer(display, layer->parent_index);
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/* Current layer depth is the depth of the parent + 1 */
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return guacenc_display_get_depth(display, parent) + 1;
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}
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int guacenc_display_free_layer(guacenc_display* display,
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int index) {
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/* Do not lookup / allocate if index is invalid */
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if (index < 0 || index > GUACENC_DISPLAY_MAX_LAYERS) {
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guacenc_log(GUAC_LOG_WARNING, "Layer index out of bounds: %i", index);
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return 1;
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}
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/* Free layer (if allocated) */
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guacenc_layer_free(display->layers[index]);
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/* Mark layer as freed */
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display->layers[index] = NULL;
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return 0;
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}
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66
src/guacenc/display-sync.c
Normal file
66
src/guacenc/display-sync.c
Normal file
@ -0,0 +1,66 @@
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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 "layer.h"
|
||||
#include "log.h"
|
||||
|
||||
#include <cairo/cairo.h>
|
||||
#include <guacamole/client.h>
|
||||
#include <guacamole/timestamp.h>
|
||||
|
||||
#include <assert.h>
|
||||
#include <inttypes.h>
|
||||
#include <stdio.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);
|
||||
|
||||
/* STUB: Write frame as PNG */
|
||||
char filename[256];
|
||||
sprintf(filename, "frame-%" PRId64 ".png", timestamp);
|
||||
cairo_surface_t* surface = def_layer->frame->surface;
|
||||
if (surface != NULL)
|
||||
cairo_surface_write_to_png(surface, filename);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
@ -22,371 +22,10 @@
|
||||
|
||||
#include "config.h"
|
||||
#include "display.h"
|
||||
#include "layer.h"
|
||||
#include "log.h"
|
||||
|
||||
#include <cairo/cairo.h>
|
||||
#include <guacamole/client.h>
|
||||
#include <guacamole/protocol.h>
|
||||
#include <guacamole/timestamp.h>
|
||||
|
||||
#include <assert.h>
|
||||
#include <inttypes.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/**
|
||||
* The Guacamole video encoder display related to the current qsort()
|
||||
* operation. As qsort() does not provide a means of passing arbitrary data to
|
||||
* the comparitor, this value must be set prior to invoking qsort() with
|
||||
* guacenc_display_layer_comparator.
|
||||
*/
|
||||
guacenc_display* __qsort_display;
|
||||
|
||||
/**
|
||||
* Comparator which orders layer pointers such that (1) NULL pointers are last,
|
||||
* (2) layers with the same parent_index are adjacent, and (3) layers with the
|
||||
* same parent_index are ordered by Z.
|
||||
*
|
||||
* @see qsort()
|
||||
*/
|
||||
static int guacenc_display_layer_comparator(const void* a, const void* b) {
|
||||
|
||||
guacenc_layer* layer_a = *((guacenc_layer**) a);
|
||||
guacenc_layer* layer_b = *((guacenc_layer**) b);
|
||||
|
||||
/* If a is NULL, sort it to bottom */
|
||||
if (layer_a == NULL) {
|
||||
|
||||
/* ... unless b is also NULL, in which case they are equal */
|
||||
if (layer_b == NULL)
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* If b is NULL (and a is not NULL), sort it to bottom */
|
||||
if (layer_b == NULL)
|
||||
return -1;
|
||||
|
||||
/* Order such that the deepest layers are first */
|
||||
int a_depth = guacenc_display_get_depth(__qsort_display, layer_a);
|
||||
int b_depth = guacenc_display_get_depth(__qsort_display, layer_b);
|
||||
if (b_depth != a_depth)
|
||||
return b_depth - a_depth;
|
||||
|
||||
/* Order such that sibling layers are adjacent */
|
||||
if (layer_b->parent_index != layer_a->parent_index)
|
||||
return layer_b->parent_index - layer_a->parent_index;
|
||||
|
||||
/* Order sibling layers according to descending Z */
|
||||
return layer_b->z - layer_a->z;
|
||||
|
||||
}
|
||||
|
||||
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;
|
||||
|
||||
int i;
|
||||
guacenc_layer* render_order[GUACENC_DISPLAY_MAX_LAYERS];
|
||||
|
||||
/* Copy list of layers within display */
|
||||
memcpy(render_order, display->layers, sizeof(render_order));
|
||||
|
||||
/* Sort layers by depth, parent, and Z */
|
||||
__qsort_display = display;
|
||||
qsort(render_order, GUACENC_DISPLAY_MAX_LAYERS, sizeof(guacenc_layer*),
|
||||
guacenc_display_layer_comparator);
|
||||
|
||||
/* Reset layer frame buffers */
|
||||
for (i = 0; i < GUACENC_DISPLAY_MAX_LAYERS; i++) {
|
||||
|
||||
/* Pull current layer, ignoring unallocated layers */
|
||||
guacenc_layer* layer = render_order[i];
|
||||
if (layer == NULL)
|
||||
continue;
|
||||
|
||||
/* Get source buffer and destination frame buffer */
|
||||
guacenc_buffer* buffer = layer->buffer;
|
||||
guacenc_buffer* frame = layer->frame;
|
||||
|
||||
/* Reset frame contents */
|
||||
guacenc_buffer_copy(frame, buffer);
|
||||
|
||||
}
|
||||
|
||||
/* Render each layer, in order */
|
||||
for (i = 0; i < GUACENC_DISPLAY_MAX_LAYERS; i++) {
|
||||
|
||||
/* Pull current layer, ignoring unallocated layers */
|
||||
guacenc_layer* layer = render_order[i];
|
||||
if (layer == NULL)
|
||||
continue;
|
||||
|
||||
/* Skip fully-transparent layers */
|
||||
if (layer->opacity == 0)
|
||||
continue;
|
||||
|
||||
/* Ignore layers without a parent */
|
||||
int parent_index = layer->parent_index;
|
||||
if (parent_index == GUACENC_LAYER_NO_PARENT)
|
||||
continue;
|
||||
|
||||
/* Retrieve parent layer, ignoring layers with invalid parents */
|
||||
guacenc_layer* parent = guacenc_display_get_layer(display, parent_index);
|
||||
if (parent == NULL)
|
||||
continue;
|
||||
|
||||
/* Get source and destination frame buffer */
|
||||
guacenc_buffer* src = layer->frame;
|
||||
guacenc_buffer* dst = parent->frame;
|
||||
|
||||
/* Ignore layers with empty buffers */
|
||||
cairo_surface_t* surface = src->surface;
|
||||
if (surface == NULL)
|
||||
continue;
|
||||
|
||||
/* Ignore if parent has no pixels */
|
||||
cairo_t* cairo = dst->cairo;
|
||||
if (cairo == NULL)
|
||||
continue;
|
||||
|
||||
/* Render buffer to layer */
|
||||
cairo_reset_clip(cairo);
|
||||
cairo_rectangle(cairo, layer->x, layer->y, src->width, src->height);
|
||||
cairo_clip(cairo);
|
||||
|
||||
cairo_set_source_surface(cairo, surface, layer->x, layer->y);
|
||||
cairo_paint_with_alpha(cairo, layer->opacity / 255.0);
|
||||
|
||||
}
|
||||
|
||||
/* Retrieve default layer (guaranteed to not be NULL) */
|
||||
guacenc_layer* def_layer = guacenc_display_get_layer(display, 0);
|
||||
assert(def_layer != NULL);
|
||||
|
||||
/* STUB: Write frame as PNG */
|
||||
char filename[256];
|
||||
sprintf(filename, "frame-%" PRId64 ".png", timestamp);
|
||||
cairo_surface_t* surface = def_layer->frame->surface;
|
||||
if (surface != NULL)
|
||||
cairo_surface_write_to_png(surface, filename);
|
||||
|
||||
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_WARNING, "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_WARNING, "Layer allocation failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* The default layer has no parent */
|
||||
if (index == 0)
|
||||
layer->parent_index = GUACENC_LAYER_NO_PARENT;
|
||||
|
||||
/* Store layer within display for future retrieval / management */
|
||||
display->layers[index] = layer;
|
||||
|
||||
}
|
||||
|
||||
return layer;
|
||||
|
||||
}
|
||||
|
||||
int guacenc_display_get_depth(guacenc_display* display, guacenc_layer* layer) {
|
||||
|
||||
/* Non-existent layers have a depth of 0 */
|
||||
if (layer == NULL)
|
||||
return 0;
|
||||
|
||||
/* Layers with no parent have a depth of 0 */
|
||||
if (layer->parent_index == GUACENC_LAYER_NO_PARENT)
|
||||
return 0;
|
||||
|
||||
/* Retrieve parent layer */
|
||||
guacenc_layer* parent =
|
||||
guacenc_display_get_layer(display, layer->parent_index);
|
||||
|
||||
/* Current layer depth is the depth of the parent + 1 */
|
||||
return guacenc_display_get_depth(display, parent) + 1;
|
||||
|
||||
}
|
||||
|
||||
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_WARNING, "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_buffer* guacenc_display_get_buffer(guacenc_display* display,
|
||||
int index) {
|
||||
|
||||
/* Transform index to buffer space */
|
||||
int internal_index = -index - 1;
|
||||
|
||||
/* Do not lookup / allocate if index is invalid */
|
||||
if (internal_index < 0 || internal_index > GUACENC_DISPLAY_MAX_BUFFERS) {
|
||||
guacenc_log(GUAC_LOG_WARNING, "Buffer index out of bounds: %i", index);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Lookup buffer, allocating a new buffer if necessary */
|
||||
guacenc_buffer* buffer = display->buffers[internal_index];
|
||||
if (buffer == NULL) {
|
||||
|
||||
/* Attempt to allocate buffer */
|
||||
buffer = guacenc_buffer_alloc();
|
||||
if (buffer == NULL) {
|
||||
guacenc_log(GUAC_LOG_WARNING, "Buffer allocation failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* All non-layer buffers must autosize */
|
||||
buffer->autosize = true;
|
||||
|
||||
/* Store buffer within display for future retrieval / management */
|
||||
display->buffers[internal_index] = buffer;
|
||||
|
||||
}
|
||||
|
||||
return buffer;
|
||||
|
||||
}
|
||||
|
||||
int guacenc_display_free_buffer(guacenc_display* display,
|
||||
int index) {
|
||||
|
||||
/* Transform index to buffer space */
|
||||
int internal_index = -index - 1;
|
||||
|
||||
/* Do not lookup / allocate if index is invalid */
|
||||
if (internal_index < 0 || internal_index > GUACENC_DISPLAY_MAX_BUFFERS) {
|
||||
guacenc_log(GUAC_LOG_WARNING, "Buffer index out of bounds: %i", index);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Free buffer (if allocated) */
|
||||
guacenc_buffer_free(display->buffers[internal_index]);
|
||||
|
||||
/* Mark buffer as freed */
|
||||
display->buffers[internal_index] = NULL;
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
guacenc_buffer* guacenc_display_get_related_buffer(guacenc_display* display,
|
||||
int index) {
|
||||
|
||||
/* Retrieve underlying buffer of layer if a layer is requested */
|
||||
if (index >= 0) {
|
||||
|
||||
/* Retrieve / allocate layer (if possible */
|
||||
guacenc_layer* layer = guacenc_display_get_layer(display, index);
|
||||
if (layer == NULL)
|
||||
return NULL;
|
||||
|
||||
/* Return underlying buffer */
|
||||
return layer->buffer;
|
||||
|
||||
}
|
||||
|
||||
/* Otherwise retrieve buffer directly */
|
||||
return guacenc_display_get_buffer(display, index);
|
||||
|
||||
}
|
||||
|
||||
int guacenc_display_create_image_stream(guacenc_display* display, int index,
|
||||
int mask, int layer_index, const char* mimetype, int x, int y) {
|
||||
|
||||
/* Do not lookup / allocate if index is invalid */
|
||||
if (index < 0 || index > GUACENC_DISPLAY_MAX_STREAMS) {
|
||||
guacenc_log(GUAC_LOG_WARNING, "Stream index out of bounds: %i", index);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Free existing stream (if any) */
|
||||
guacenc_image_stream_free(display->image_streams[index]);
|
||||
|
||||
/* Associate new stream */
|
||||
guacenc_image_stream* stream = display->image_streams[index] =
|
||||
guacenc_image_stream_alloc(mask, layer_index, mimetype, x, y);
|
||||
|
||||
/* Return zero only if stream is not NULL */
|
||||
return stream == NULL;
|
||||
|
||||
}
|
||||
|
||||
guacenc_image_stream* guacenc_display_get_image_stream(
|
||||
guacenc_display* display, int index) {
|
||||
|
||||
/* Do not lookup / allocate if index is invalid */
|
||||
if (index < 0 || index > GUACENC_DISPLAY_MAX_STREAMS) {
|
||||
guacenc_log(GUAC_LOG_WARNING, "Stream index out of bounds: %i", index);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Return existing stream (if any) */
|
||||
return display->image_streams[index];
|
||||
|
||||
}
|
||||
|
||||
int guacenc_display_free_image_stream(guacenc_display* display, int index) {
|
||||
|
||||
/* Do not lookup / allocate if index is invalid */
|
||||
if (index < 0 || index > GUACENC_DISPLAY_MAX_STREAMS) {
|
||||
guacenc_log(GUAC_LOG_WARNING, "Stream index out of bounds: %i", index);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Free stream (if allocated) */
|
||||
guacenc_image_stream_free(display->image_streams[index]);
|
||||
|
||||
/* Mark stream as freed */
|
||||
display->image_streams[index] = NULL;
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
cairo_operator_t guacenc_display_cairo_operator(guac_composite_mode mask) {
|
||||
|
||||
|
||||
@ -102,6 +102,22 @@ typedef struct guacenc_display {
|
||||
*/
|
||||
int guacenc_display_sync(guacenc_display* display, guac_timestamp timestamp);
|
||||
|
||||
/**
|
||||
* Flattens the given display, rendering all child layers to the frame buffers
|
||||
* of their parent layers. The frame buffer of the default layer of the display
|
||||
* will thus contain the flattened, composited rendering of the entire display
|
||||
* state after this function succeeds. The contents of the frame buffers of
|
||||
* each layer are replaced by this function.
|
||||
*
|
||||
* @param display
|
||||
* The display to flatten.
|
||||
*
|
||||
* @return
|
||||
* Zero if the flatten operation succeeds, non-zero if an error occurs
|
||||
* preventing proper rendering.
|
||||
*/
|
||||
int guacenc_display_flatten(guacenc_display* display);
|
||||
|
||||
/**
|
||||
* Allocates a new Guacamole video encoder display. This display serves as the
|
||||
* representation of encoding state, as well as the state of the Guacamole
|
||||
|
||||
Loading…
Reference in New Issue
Block a user