guacamole-spice-protocol/src/protocols/rdp/rdp_bitmap.c

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is libguac-client-rdp.
*
* The Initial Developer of the Original Code is
* Michael Jumper.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Matt Hortman
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*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
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#include <cairo/cairo.h>
#include <guacamole/socket.h>
#include <guacamole/client.h>
#include <guacamole/protocol.h>
#include <freerdp/freerdp.h>
#include <freerdp/codec/color.h>
#include <freerdp/codec/bitmap.h>
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#include "client.h"
#include "rdp_bitmap.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;
guac_socket* socket = client->socket;
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/* Allocate buffer */
guac_layer* buffer = guac_client_alloc_buffer(client);
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/* Cache image data if present */
if (bitmap->data != NULL) {
/* Create surface from image data */
cairo_surface_t* surface = cairo_image_surface_create_for_data(
bitmap->data, CAIRO_FORMAT_RGB24,
bitmap->width, bitmap->height, 4*bitmap->width);
/* Send surface to buffer */
guac_protocol_send_png(socket,
GUAC_COMP_SRC, buffer, 0, 0, surface);
/* Free surface */
cairo_surface_destroy(surface);
}
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/* Store buffer reference in bitmap */
((guac_rdp_bitmap*) bitmap)->layer = buffer;
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}
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void guac_rdp_bitmap_new(rdpContext* context, rdpBitmap* bitmap) {
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/* Convert image data if present */
if (bitmap->data != NULL) {
/* Convert image data to 32-bit RGB */
unsigned char* image_buffer = freerdp_image_convert(bitmap->data, NULL,
bitmap->width, bitmap->height,
context->instance->settings->color_depth,
32, ((rdp_freerdp_context*) context)->clrconv);
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/* Free existing image, if any */
if (image_buffer != bitmap->data)
free(bitmap->data);
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/* Store converted image in bitmap */
bitmap->data = image_buffer;
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}
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/* No corresponding layer yet - caching is deferred. */
((guac_rdp_bitmap*) bitmap)->layer = NULL;
/* Start at zero usage */
((guac_rdp_bitmap*) bitmap)->used = 0;
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}
void guac_rdp_bitmap_paint(rdpContext* context, rdpBitmap* bitmap) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_socket* socket = client->socket;
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 (((guac_rdp_bitmap*) bitmap)->layer == NULL
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&& ((guac_rdp_bitmap*) bitmap)->used >= 1)
guac_rdp_cache_bitmap(context, bitmap);
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/* If cached, retrieve from cache */
if (((guac_rdp_bitmap*) bitmap)->layer != NULL)
guac_protocol_send_copy(socket,
((guac_rdp_bitmap*) bitmap)->layer,
0, 0, width, height,
GUAC_COMP_OVER,
GUAC_DEFAULT_LAYER, bitmap->left, bitmap->top);
/* Otherwise, draw with stored image data */
else if (bitmap->data != NULL) {
/* Create surface from image data */
cairo_surface_t* surface = cairo_image_surface_create_for_data(
bitmap->data, CAIRO_FORMAT_RGB24,
width, height, 4*bitmap->width);
/* Send surface to buffer */
guac_protocol_send_png(socket,
GUAC_COMP_OVER, GUAC_DEFAULT_LAYER,
bitmap->left, bitmap->top, surface);
/* Free surface */
cairo_surface_destroy(surface);
}
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/* Increment usage counter */
((guac_rdp_bitmap*) bitmap)->used++;
}
void guac_rdp_bitmap_free(rdpContext* context, rdpBitmap* bitmap) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
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/* If cached, free buffer */
if (((guac_rdp_bitmap*) bitmap)->layer != NULL)
guac_client_free_buffer(client, ((guac_rdp_bitmap*) bitmap)->layer);
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}
void guac_rdp_bitmap_setsurface(rdpContext* context, rdpBitmap* bitmap, boolean primary) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
if (primary)
((rdp_guac_client_data*) client->data)->current_surface
= GUAC_DEFAULT_LAYER;
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else {
/* Make sure that the recieved bitmap is not NULL before processing */
if (bitmap == NULL) {
guac_client_log_info(client, "NULL bitmap found in bitmap_setsurface instruction.");
return;
}
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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_guac_client_data*) client->data)->current_surface
= ((guac_rdp_bitmap*) bitmap)->layer;
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}
}
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void guac_rdp_bitmap_decompress(rdpContext* context, rdpBitmap* bitmap, uint8* data, int width, int height, int bpp, int length, boolean compressed) {
int size = width * height * (bpp + 7) / 8;
if (bitmap->data == NULL)
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bitmap->data = (uint8*) malloc(size);
else
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bitmap->data = (uint8*) realloc(bitmap->data, size);
if (compressed)
bitmap_decompress(data, bitmap->data, width, height, length, bpp, bpp);
else
freerdp_image_flip(data, bitmap->data, width, height, bpp);
bitmap->compressed = false;
bitmap->length = size;
bitmap->bpp = bpp;
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}