/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * Palette (Color Table) Cache

 *

 * Copyright 2011 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/cache/palette.h>

#include "palette.h"

#define TAG FREERDP_TAG("cache.palette")

static void* palette_cache_get(rdpPaletteCache* palette, UINT32 index);

static void palette_cache_put(rdpPaletteCache* palette, UINT32 index, void* entry);

static BOOL update_gdi_cache_color_table(rdpContext* context,

                                         const CACHE_COLOR_TABLE_ORDER* cacheColorTable)

{

	UINT32* colorTable;

	rdpCache* cache = context->cache;

	colorTable = (UINT32*)malloc(sizeof(UINT32) * 256);

	if (!colorTable)

		return FALSE;

	CopyMemory(colorTable, cacheColorTable->colorTable, sizeof(UINT32) * 256);

	palette_cache_put(cache->palette, cacheColorTable->cacheIndex, (void*)colorTable);

	return TRUE;

}

void* palette_cache_get(rdpPaletteCache* paletteCache, UINT32 index)

{

	void* entry;

	if (index >= paletteCache->maxEntries)

	{

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

		return NULL;

	}

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

	if (!entry)

	{

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

		return NULL;

	}

	return entry;

}

void palette_cache_put(rdpPaletteCache* paletteCache, UINT32 index, void* entry)

{

	if (index >= paletteCache->maxEntries)

	{

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

		free(entry);

		return;

	}

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

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

}

void palette_cache_register_callbacks(rdpUpdate* update)

{

	update->secondary->CacheColorTable = update_gdi_cache_color_table;

}

rdpPaletteCache* palette_cache_new(rdpSettings* settings)

{

	rdpPaletteCache* paletteCache;

	paletteCache = (rdpPaletteCache*)calloc(1, sizeof(rdpPaletteCache));

	if (paletteCache)

	{

		paletteCache->settings = settings;

		paletteCache->maxEntries = 6;

		paletteCache->entries =

		    (PALETTE_TABLE_ENTRY*)calloc(paletteCache->maxEntries, sizeof(PALETTE_TABLE_ENTRY));

	}

	return paletteCache;

}

void palette_cache_free(rdpPaletteCache* paletteCache)

{

	if (paletteCache)

	{

		UINT32 i;

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

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

		free(paletteCache->entries);

		free(paletteCache);

	}

}

void free_palette_update(rdpContext* context, PALETTE_UPDATE* pointer)

{

	free(pointer);

}

PALETTE_UPDATE* copy_palette_update(rdpContext* context, const PALETTE_UPDATE* pointer)

{

	PALETTE_UPDATE* dst = calloc(1, sizeof(PALETTE_UPDATE));

	if (!dst || !pointer)

		goto fail;

	*dst = *pointer;

	return dst;

fail:

	free_palette_update(context, dst);

	return NULL;

}