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/*
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* 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
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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,
* 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 "bitmap.h"
#include "common/display.h"
#include "common/surface.h"
#include "config.h"
#include "rdp.h"
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#include <cairo/cairo.h>
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#include <freerdp/freerdp.h>
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#include <guacamole/client.h>
#include <winpr/crt.h>
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#include <winpr/wtypes.h>
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#include <stdio.h>
#include <stdlib.h>
void guac_rdp_cache_bitmap(rdpContext* context, rdpBitmap* bitmap) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
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/* Allocate buffer */
guac_common_display_layer* buffer = guac_common_display_alloc_buffer(
rdp_client->display, bitmap->width, bitmap->height);
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/* Cache image data if present */
if (bitmap->data != NULL) {
/* Create surface from image data */
cairo_surface_t* image = cairo_image_surface_create_for_data(
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bitmap->data, CAIRO_FORMAT_RGB24,
bitmap->width, bitmap->height, 4*bitmap->width);
/* Send surface to buffer */
guac_common_surface_draw(buffer->surface, 0, 0, image);
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/* Free surface */
cairo_surface_destroy(image);
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}
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/* Store buffer reference in bitmap */
((guac_rdp_bitmap*) bitmap)->layer = buffer;
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}
BOOL guac_rdp_bitmap_new(rdpContext* context, rdpBitmap* bitmap) {
/* No corresponding surface yet - caching is deferred. */
((guac_rdp_bitmap*) bitmap)->layer = NULL;
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/* Start at zero usage */
((guac_rdp_bitmap*) bitmap)->used = 0;
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return TRUE;
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}
BOOL guac_rdp_bitmap_paint(rdpContext* context, rdpBitmap* bitmap) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_common_display_layer* buffer = ((guac_rdp_bitmap*) bitmap)->layer;
int width = bitmap->right - bitmap->left + 1;
int height = bitmap->bottom - bitmap->top + 1;
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/* If not cached, cache if necessary */
if (buffer == NULL && ((guac_rdp_bitmap*) bitmap)->used >= 1)
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guac_rdp_cache_bitmap(context, bitmap);
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/* If cached, retrieve from cache */
if (buffer != NULL)
guac_common_surface_copy(buffer->surface, 0, 0, width, height,
rdp_client->display->default_surface,
bitmap->left, bitmap->top);
/* Otherwise, draw with stored image data */
else if (bitmap->data != NULL) {
/* Create surface from image data */
cairo_surface_t* image = cairo_image_surface_create_for_data(
bitmap->data, CAIRO_FORMAT_RGB24,
width, height, 4*bitmap->width);
/* Draw image on default surface */
guac_common_surface_draw(rdp_client->display->default_surface,
bitmap->left, bitmap->top, image);
/* Free surface */
cairo_surface_destroy(image);
}
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/* Increment usage counter */
((guac_rdp_bitmap*) bitmap)->used++;
return TRUE;
}
void guac_rdp_bitmap_free(rdpContext* context, rdpBitmap* bitmap) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_common_display_layer* buffer = ((guac_rdp_bitmap*) bitmap)->layer;
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/* If cached, free buffer */
if (buffer != NULL)
guac_common_display_free_buffer(rdp_client->display, buffer);
#ifndef FREERDP_BITMAP_FREE_FREES_BITMAP
/* NOTE: Except in FreeRDP 2.0.0-rc0 and earlier, FreeRDP-allocated memory
* for the rdpBitmap will NOT be automatically released after this free
* handler is invoked, thus we must do so manually here */
_aligned_free(bitmap->data);
free(bitmap);
#endif
}
BOOL guac_rdp_bitmap_setsurface(rdpContext* context, rdpBitmap* bitmap, BOOL primary) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
if (primary)
rdp_client->current_surface = rdp_client->display->default_surface;
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else {
/* Make sure that the recieved bitmap is not NULL before processing */
if (bitmap == NULL) {
guac_client_log(client, GUAC_LOG_INFO, "NULL bitmap found in bitmap_setsurface instruction.");
return TRUE;
}
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/* If not available as a surface, make available. */
if (((guac_rdp_bitmap*) bitmap)->layer == NULL)
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guac_rdp_cache_bitmap(context, bitmap);
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rdp_client->current_surface =
((guac_rdp_bitmap*) bitmap)->layer->surface;
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}
return TRUE;
}