/**

 * 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.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <stdio.h>

#include <winpr/crt.h>

#include <freerdp/log.h>

#include <freerdp/update.h>

#include <freerdp/freerdp.h>

#include <winpr/stream.h>

#include <freerdp/cache/nine_grid.h>

#define TAG FREERDP_TAG("cache.nine_grid")

struct _NINE_GRID_ENTRY

{

	void* entry;

};

typedef struct _NINE_GRID_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 */

	/* internal */

	rdpSettings* settings;

};

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;

	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(rdpSettings* settings)

{

	rdpNineGridCache* nine_grid;

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

	if (!nine_grid)

		return NULL;

	nine_grid->settings = settings;

	nine_grid->maxSize = 2560;

	nine_grid->maxEntries = 256;

	nine_grid->settings->DrawNineGridCacheSize = nine_grid->maxSize;

	nine_grid->settings->DrawNineGridCacheEntries = nine_grid->maxEntries;

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

	if (!nine_grid->entries)

	{

		free(nine_grid);

		return NULL;

	}

	return nine_grid;

}

void nine_grid_cache_free(rdpNineGridCache* nine_grid)

{

	int i;

	if (nine_grid != NULL)

	{

		if (nine_grid->entries != NULL)

		{

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

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

			free(nine_grid->entries);

		}

		free(nine_grid);

	}

}