/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * NineGrid Cache

 *

 * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>

 *

 * Licensed 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 <freerdp/config.h>

#include <stdio.h>

#include <winpr/crt.h>

#include <freerdp/log.h>

#include <freerdp/update.h>

#include <freerdp/freerdp.h>

#include <winpr/stream.h>

#include "nine_grid.h"

#include "cache.h"

#define TAG FREERDP_TAG("cache.nine_grid")

typedef struct

{

  void* entry;

} NINE_GRID_ENTRY;

struct rdp_nine_grid_cache

{

  pDrawNineGrid DrawNineGrid;           /* 0 */

  pMultiDrawNineGrid MultiDrawNineGrid; /* 1 */

  UINT32 paddingA[16 - 2];              /* 2 */

  UINT32 maxEntries;        /* 16 */

  UINT32 maxSize;           /* 17 */

  NINE_GRID_ENTRY* entries; /* 18 */

  UINT32 paddingB[32 - 19]; /* 19 */

  rdpContext* context;

};

static void* nine_grid_cache_get(rdpNineGridCache* nine_grid, UINT32 index);

static void nine_grid_cache_put(rdpNineGridCache* nine_grid, UINT32 index, void* entry);

static BOOL update_gdi_draw_nine_grid(rdpContext* context,

                                      const DRAW_NINE_GRID_ORDER* draw_nine_grid)

{

  rdpCache* cache = context->cache;

  return IFCALLRESULT(TRUE, cache->nine_grid->DrawNineGrid, context, draw_nine_grid);

}

static BOOL update_gdi_multi_draw_nine_grid(rdpContext* context,

                                            const MULTI_DRAW_NINE_GRID_ORDER* multi_draw_nine_grid)

{

  rdpCache* cache = context->cache;

  return IFCALLRESULT(TRUE, cache->nine_grid->MultiDrawNineGrid, context, multi_draw_nine_grid);

}

void nine_grid_cache_register_callbacks(rdpUpdate* update)

{

  rdpCache* cache = update->context->cache;

  cache->nine_grid->DrawNineGrid = update->primary->DrawNineGrid;

  cache->nine_grid->MultiDrawNineGrid = update->primary->MultiDrawNineGrid;

  update->primary->DrawNineGrid = update_gdi_draw_nine_grid;

  update->primary->MultiDrawNineGrid = update_gdi_multi_draw_nine_grid;

}

void* nine_grid_cache_get(rdpNineGridCache* nine_grid, UINT32 index)

{

  void* entry = NULL;

  if (index >= nine_grid->maxEntries)

  {

    WLog_ERR(TAG, "invalid NineGrid index: 0x%08" PRIX32 "", index);

    return NULL;

  }

  entry = nine_grid->entries[index].entry;

  if (entry == NULL)

  {

    WLog_ERR(TAG, "invalid NineGrid at index: 0x%08" PRIX32 "", index);

    return NULL;

  }

  return entry;

}

void nine_grid_cache_put(rdpNineGridCache* nine_grid, UINT32 index, void* entry)

{

  if (index >= nine_grid->maxEntries)

  {

    WLog_ERR(TAG, "invalid NineGrid index: 0x%08" PRIX32 "", index);

    return;

  }

  free(nine_grid->entries[index].entry);

  nine_grid->entries[index].entry = entry;

}

rdpNineGridCache* nine_grid_cache_new(rdpContext* context)

{

  rdpNineGridCache* nine_grid = NULL;

  rdpSettings* settings = NULL;

  WINPR_ASSERT(context);

  settings = context->settings;

  WINPR_ASSERT(settings);

  nine_grid = (rdpNineGridCache*)calloc(1, sizeof(rdpNineGridCache));

  if (!nine_grid)

    return NULL;

  nine_grid->context = context;

  nine_grid->maxSize = 2560;

  nine_grid->maxEntries = 256;

  if (!freerdp_settings_set_uint32(settings, FreeRDP_DrawNineGridCacheSize, nine_grid->maxSize))

    goto fail;

  if (!freerdp_settings_set_uint32(settings, FreeRDP_DrawNineGridCacheEntries,

                                   nine_grid->maxEntries))

    goto fail;

  nine_grid->entries = (NINE_GRID_ENTRY*)calloc(nine_grid->maxEntries, sizeof(NINE_GRID_ENTRY));

  if (!nine_grid->entries)

    goto fail;

  return nine_grid;

fail:

  WINPR_PRAGMA_DIAG_PUSH

  WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC

  nine_grid_cache_free(nine_grid);

  WINPR_PRAGMA_DIAG_POP

  return NULL;

}

void nine_grid_cache_free(rdpNineGridCache* nine_grid)

{

  if (nine_grid != NULL)

  {

    if (nine_grid->entries != NULL)

    {

      for (size_t i = 0; i < nine_grid->maxEntries; i++)

        free(nine_grid->entries[i].entry);

      free(nine_grid->entries);

    }

    free(nine_grid);

  }

}