26dfc533bd
In FreeRDP 2.0.0-rc0 and earlier, Bitmap_Free(bitmap) invokes the free handler of the given bitmap, frees bitmap->data, and then frees the bitmap. The implementation-specific free handler needs to be aware only of the implementation's own concerns. After FreeRDP 2.0.0-rc0, Bitmap_Free(bitmap) only invokes the implementation-specific free handler, and it's on the implementation to know that bitmap->data must be manually freed with _aligned_free() and bitmap must be freed with free(). The implementation-specific free handler must be aware of the internals of the library. See commit 8dda26a.
171 lines
5.2 KiB
C
171 lines
5.2 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "bitmap.h"
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#include "common/display.h"
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#include "common/surface.h"
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#include "config.h"
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#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>
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#include <winpr/crt.h>
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#include <winpr/wtypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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void guac_rdp_cache_bitmap(rdpContext* context, rdpBitmap* bitmap) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
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/* Allocate buffer */
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guac_common_display_layer* buffer = guac_common_display_alloc_buffer(
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rdp_client->display, bitmap->width, bitmap->height);
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/* Cache image data if present */
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if (bitmap->data != NULL) {
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/* Create surface from image data */
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cairo_surface_t* image = cairo_image_surface_create_for_data(
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bitmap->data, CAIRO_FORMAT_RGB24,
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bitmap->width, bitmap->height, 4*bitmap->width);
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/* Send surface to buffer */
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guac_common_surface_draw(buffer->surface, 0, 0, image);
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/* Free surface */
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cairo_surface_destroy(image);
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}
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/* Store buffer reference in bitmap */
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((guac_rdp_bitmap*) bitmap)->layer = buffer;
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}
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BOOL guac_rdp_bitmap_new(rdpContext* context, rdpBitmap* bitmap) {
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/* No corresponding surface yet - caching is deferred. */
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((guac_rdp_bitmap*) bitmap)->layer = NULL;
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/* Start at zero usage */
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((guac_rdp_bitmap*) bitmap)->used = 0;
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return TRUE;
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}
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BOOL guac_rdp_bitmap_paint(rdpContext* context, rdpBitmap* bitmap) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
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guac_common_display_layer* buffer = ((guac_rdp_bitmap*) bitmap)->layer;
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int width = bitmap->right - bitmap->left + 1;
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int height = bitmap->bottom - bitmap->top + 1;
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/* If not cached, cache if necessary */
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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 */
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if (buffer != NULL)
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guac_common_surface_copy(buffer->surface, 0, 0, width, height,
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rdp_client->display->default_surface,
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bitmap->left, bitmap->top);
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/* Otherwise, draw with stored image data */
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else if (bitmap->data != NULL) {
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/* Create surface from image data */
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cairo_surface_t* image = cairo_image_surface_create_for_data(
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bitmap->data, CAIRO_FORMAT_RGB24,
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width, height, 4*bitmap->width);
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/* Draw image on default surface */
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guac_common_surface_draw(rdp_client->display->default_surface,
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bitmap->left, bitmap->top, image);
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/* Free surface */
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cairo_surface_destroy(image);
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}
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/* Increment usage counter */
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((guac_rdp_bitmap*) bitmap)->used++;
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return TRUE;
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}
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void guac_rdp_bitmap_free(rdpContext* context, rdpBitmap* bitmap) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
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guac_common_display_layer* buffer = ((guac_rdp_bitmap*) bitmap)->layer;
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/* If cached, free buffer */
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if (buffer != NULL)
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guac_common_display_free_buffer(rdp_client->display, buffer);
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#ifndef FREERDP_BITMAP_FREE_FREES_BITMAP
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/* NOTE: Except in FreeRDP 2.0.0-rc0 and earlier, FreeRDP-allocated memory
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* for the rdpBitmap will NOT be automatically released after this free
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* handler is invoked, thus we must do so manually here */
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_aligned_free(bitmap->data);
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free(bitmap);
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#endif
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}
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BOOL guac_rdp_bitmap_setsurface(rdpContext* context, rdpBitmap* bitmap, BOOL primary) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
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if (primary)
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rdp_client->current_surface = rdp_client->display->default_surface;
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else {
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/* Make sure that the recieved bitmap is not NULL before processing */
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if (bitmap == NULL) {
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guac_client_log(client, GUAC_LOG_INFO, "NULL bitmap found in bitmap_setsurface instruction.");
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return TRUE;
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}
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/* If not available as a surface, make available. */
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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 =
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((guac_rdp_bitmap*) bitmap)->layer->surface;
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}
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return TRUE;
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}
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