text: /*
   * 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
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * 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 "config.h"
  
  #include "client.h"
  #include "guac_display.h"
  #include "guac_surface.h"
  #include "rdp.h"
  #include "rdp_bitmap.h"
  #include "rdp_settings.h"
  
  #include <cairo/cairo.h>
  #include <freerdp/codec/bitmap.h>
  #include <freerdp/codec/color.h>
  #include <freerdp/freerdp.h>
  #include <guacamole/client.h>
  #include <guacamole/socket.h>
  
  #ifdef ENABLE_WINPR
  #include <winpr/wtypes.h>
  #else
  #include "compat/winpr-wtypes.h"
  #endif
  
  #include <stdio.h>
  #include <stdlib.h>
  
  void guac_rdp_cache_bitmap(rdpContext* context, rdpBitmap* bitmap) {
  
      guac_client* client = ((rdp_freerdp_context*) context)->client;
      guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
  
      /* Allocate buffer */
      guac_common_display_layer* buffer = guac_common_display_alloc_buffer(
              rdp_client->display, bitmap->width, bitmap->height);
  
      /* Cache image data if present */
      if (bitmap->data != NULL) {
  
          /* Create surface from image data */
          cairo_surface_t* image = cairo_image_surface_create_for_data(
              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);
  
          /* Free surface */
          cairo_surface_destroy(image);
  
      }
  
      /* Store buffer reference in bitmap */
      ((guac_rdp_bitmap*) bitmap)->layer = buffer;
  
  }
  
  void guac_rdp_bitmap_new(rdpContext* context, rdpBitmap* bitmap) {
  
      /* Convert image data if present */
      if (bitmap->data != NULL && bitmap->bpp != 32) {
  
          /* Convert image data to 32-bit RGB */
          unsigned char* image_buffer = freerdp_image_convert(bitmap->data, NULL,
                  bitmap->width, bitmap->height,
                  guac_rdp_get_depth(context->instance),
                  32, ((rdp_freerdp_context*) context)->clrconv);
  
          /* Free existing image, if any */
          if (image_buffer != bitmap->data) {
  #ifdef FREERDP_BITMAP_REQUIRES_ALIGNED_MALLOC
              _aligned_free(bitmap->data);
  #else
              free(bitmap->data);
  #endif
          }
  
          /* Store converted image in bitmap */
          bitmap->data = image_buffer;
  
      }
  
      /* No corresponding surface yet - caching is deferred. */
      ((guac_rdp_bitmap*) bitmap)->layer = NULL;
  
      /* Start at zero usage */
      ((guac_rdp_bitmap*) bitmap)->used = 0;
  
  }
  
  void 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;
  
      /* If not cached, cache if necessary */
      if (buffer == NULL && ((guac_rdp_bitmap*) bitmap)->used >= 1)
          guac_rdp_cache_bitmap(context, bitmap);
  
      /* 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);
  
      }
  
      /* 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;
      guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
      guac_common_display_layer* buffer = ((guac_rdp_bitmap*) bitmap)->layer;
  
      /* If cached, free buffer */
      if (buffer != NULL)
          guac_common_display_free_buffer(rdp_client->display, buffer);
  
  }
  
  void 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;
  
      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;
          }
  
          /* If not available as a surface, make available. */
          if (((guac_rdp_bitmap*) bitmap)->layer == NULL)
              guac_rdp_cache_bitmap(context, bitmap);
  
          rdp_client->current_surface =
              ((guac_rdp_bitmap*) bitmap)->layer->surface;
  
      }
  
  }
  
  #ifdef LEGACY_RDPBITMAP
  void guac_rdp_bitmap_decompress(rdpContext* context, rdpBitmap* bitmap, UINT8* data,
          int width, int height, int bpp, int length, BOOL compressed) {
  #else
  void guac_rdp_bitmap_decompress(rdpContext* context, rdpBitmap* bitmap, UINT8* data,
          int width, int height, int bpp, int length, BOOL compressed, int codec_id) {
  #endif
  
      int size = width * height * 4;
  
  #ifdef FREERDP_BITMAP_REQUIRES_ALIGNED_MALLOC
      /* Free pre-existing data, if any (might be reused) */
      if (bitmap->data != NULL)
          _aligned_free(bitmap->data);
  
      /* Allocate new data */
      bitmap->data = (UINT8*) _aligned_malloc(size, 16);
  #else
      /* Free pre-existing data, if any (might be reused) */
      free(bitmap->data);
  
      /* Allocate new data */
      bitmap->data = (UINT8*) malloc(size);
  #endif
  
      if (compressed) {
  
  #ifdef HAVE_RDPCONTEXT_CODECS 
          rdpCodecs* codecs = context->codecs;
  
          /* Decode as interleaved if less than 32 bits per pixel */
          if (bpp < 32) {
              freerdp_client_codecs_prepare(codecs, FREERDP_CODEC_INTERLEAVED);
  #ifdef INTERLEAVED_DECOMPRESS_TAKES_PALETTE
              interleaved_decompress(codecs->interleaved, data, length, bpp,
                  &(bitmap->data), PIXEL_FORMAT_XRGB32, -1, 0, 0, width, height,
                  (BYTE*) ((rdp_freerdp_context*) context)->palette);
              bitmap->bpp = 32;
  #else
              interleaved_decompress(codecs->interleaved, data, length, bpp,
                  &(bitmap->data), PIXEL_FORMAT_XRGB32, -1, 0, 0, width, height);
              bitmap->bpp = bpp;
  #endif
          }
  
          /* Otherwise, decode as planar */
          else {
              freerdp_client_codecs_prepare(codecs, FREERDP_CODEC_PLANAR);
  #ifdef PLANAR_DECOMPRESS_CAN_FLIP
              planar_decompress(codecs->planar, data, length,
                  &(bitmap->data), PIXEL_FORMAT_XRGB32, -1, 0, 0, width, height,
                  TRUE);
              bitmap->bpp = 32;
  #else
              planar_decompress(codecs->planar, data, length,
                  &(bitmap->data), PIXEL_FORMAT_XRGB32, -1, 0, 0, width, height);
              bitmap->bpp = bpp;
  #endif
          }
  #else
          bitmap_decompress(data, bitmap->data, width, height, length, bpp, bpp);
          bitmap->bpp = bpp;
  #endif
  
      }
      else {
          freerdp_image_flip(data, bitmap->data, width, height, bpp);
          bitmap->bpp = bpp;
      }
  
      bitmap->compressed = FALSE;
      bitmap->length = size;
  
  }
  
  