/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * Glyph 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 <winpr/stream.h>

#include <freerdp/log.h>

#include <freerdp/cache/pointer.h>

#include "pointer.h"

#define TAG FREERDP_TAG("cache.pointer")

static BOOL pointer_cache_put(rdpPointerCache* pointer_cache, UINT32 index,

                              rdpPointer* pointer);

static const rdpPointer* pointer_cache_get(rdpPointerCache* pointer_cache,

        UINT32 index);

static void pointer_free(rdpContext* context, rdpPointer* pointer)

{

	if (pointer)

	{

		IFCALL(pointer->Free, context, pointer);

		if (pointer->xorMaskData)

		{

			free(pointer->xorMaskData);

			pointer->xorMaskData = NULL;

		}

		if (pointer->andMaskData)

		{

			free(pointer->andMaskData);

			pointer->andMaskData = NULL;

		}

		free(pointer);

	}

}

static BOOL update_pointer_position(rdpContext* context,

                                    const POINTER_POSITION_UPDATE* pointer_position)

{

	rdpPointer* pointer;

	if (!context || !context->graphics || !context->graphics->Pointer_Prototype

	    || !pointer_position)

		return FALSE;

	pointer = context->graphics->Pointer_Prototype;

	return IFCALLRESULT(TRUE, pointer->SetPosition, context, pointer_position->xPos,

	                            pointer_position->yPos);

}

static BOOL update_pointer_system(rdpContext* context,

                                  const POINTER_SYSTEM_UPDATE* pointer_system)

{

	rdpPointer* pointer;

	if (!context || !context->graphics || !context->graphics->Pointer_Prototype

	    || !pointer_system)

		return FALSE;

	pointer = context->graphics->Pointer_Prototype;

	switch (pointer_system->type)

	{

		case SYSPTR_NULL:

			return IFCALLRESULT(TRUE, pointer->SetNull, context);

		case SYSPTR_DEFAULT:

			return IFCALLRESULT(TRUE, pointer->SetDefault, context);

		default:

			WLog_ERR(TAG,  "Unknown system pointer type (0x%08"PRIX32")", pointer_system->type);

	}

	return TRUE;

}

static BOOL update_pointer_color(rdpContext* context,

                                 const POINTER_COLOR_UPDATE* pointer_color)

{

	rdpPointer* pointer;

	rdpCache* cache = context->cache;

	pointer = Pointer_Alloc(context);

	if (pointer != NULL)

	{

		pointer->xorBpp = 24;

		pointer->xPos = pointer_color->xPos;

		pointer->yPos = pointer_color->yPos;

		pointer->width = pointer_color->width;

		pointer->height = pointer_color->height;

		pointer->lengthAndMask = pointer_color->lengthAndMask;

		pointer->lengthXorMask = pointer_color->lengthXorMask;

		if (pointer->lengthAndMask && pointer_color->andMaskData)

		{

			pointer->andMaskData = (BYTE*) malloc(pointer->lengthAndMask);

			if (!pointer->andMaskData)

				goto out_fail;

			CopyMemory(pointer->andMaskData, pointer_color->andMaskData,

			           pointer->lengthAndMask);

		}

		if (pointer->lengthXorMask && pointer_color->xorMaskData)

		{

			pointer->xorMaskData = (BYTE*) malloc(pointer->lengthXorMask);

			if (!pointer->xorMaskData)

				goto out_fail;

			CopyMemory(pointer->xorMaskData, pointer_color->xorMaskData,

			           pointer->lengthXorMask);

		}

		if (!IFCALLRESULT(TRUE, pointer->New, context, pointer))

			goto out_fail;

		if (!pointer_cache_put(cache->pointer, pointer_color->cacheIndex, pointer))

			goto out_fail;

		return IFCALLRESULT(TRUE, pointer->Set, context, pointer);

	}

	return FALSE;

out_fail:

	pointer_free(context, pointer);

	return FALSE;

}

static BOOL update_pointer_new(rdpContext* context,

                               const POINTER_NEW_UPDATE* pointer_new)

{

	rdpPointer* pointer;

	rdpCache* cache;

	if (!context || !pointer_new)

		return FALSE;

	cache = context->cache;

	pointer = Pointer_Alloc(context);

	if (!pointer)

		return FALSE;

	pointer->xorBpp = pointer_new->xorBpp;

	pointer->xPos = pointer_new->colorPtrAttr.xPos;

	pointer->yPos = pointer_new->colorPtrAttr.yPos;

	pointer->width = pointer_new->colorPtrAttr.width;

	pointer->height = pointer_new->colorPtrAttr.height;

	pointer->lengthAndMask = pointer_new->colorPtrAttr.lengthAndMask;

	pointer->lengthXorMask = pointer_new->colorPtrAttr.lengthXorMask;

	if (pointer->lengthAndMask)

	{

		pointer->andMaskData = (BYTE*) malloc(pointer->lengthAndMask);

		if (!pointer->andMaskData)

			goto out_fail;

		CopyMemory(pointer->andMaskData, pointer_new->colorPtrAttr.andMaskData,

		           pointer->lengthAndMask);

	}

	if (pointer->lengthXorMask)

	{

		pointer->xorMaskData = (BYTE*) malloc(pointer->lengthXorMask);

		if (!pointer->xorMaskData)

			goto out_fail;

		CopyMemory(pointer->xorMaskData, pointer_new->colorPtrAttr.xorMaskData,

		           pointer->lengthXorMask);

	}

	if (!IFCALLRESULT(TRUE, pointer->New, context, pointer))

		goto out_fail;

	if (!pointer_cache_put(cache->pointer, pointer_new->colorPtrAttr.cacheIndex,

	                       pointer))

		goto out_fail;

	return IFCALLRESULT(TRUE, pointer->Set, context, pointer);

out_fail:

	pointer_free(context, pointer);

	return FALSE;

}

static BOOL update_pointer_cached(rdpContext* context,

                                  const POINTER_CACHED_UPDATE* pointer_cached)

{

	const rdpPointer* pointer;

	rdpCache* cache = context->cache;

	pointer = pointer_cache_get(cache->pointer, pointer_cached->cacheIndex);

	if (pointer != NULL)

		return IFCALLRESULT(TRUE, pointer->Set, context, pointer);

	return FALSE;

}

const rdpPointer* pointer_cache_get(rdpPointerCache* pointer_cache,

                                    UINT32 index)

{

	const rdpPointer* pointer;

	if (index >= pointer_cache->cacheSize)

	{

		WLog_ERR(TAG,  "invalid pointer index:%"PRIu32"", index);

		return NULL;

	}

	pointer = pointer_cache->entries[index];

	return pointer;

}

BOOL pointer_cache_put(rdpPointerCache* pointer_cache, UINT32 index,

                       rdpPointer* pointer)

{

	rdpPointer* prevPointer;

	if (index >= pointer_cache->cacheSize)

	{

		WLog_ERR(TAG,  "invalid pointer index:%"PRIu32"", index);

		return FALSE;

	}

	prevPointer = pointer_cache->entries[index];

	pointer_free(pointer_cache->update->context, prevPointer);

	pointer_cache->entries[index] = pointer;

	return TRUE;

}

void pointer_cache_register_callbacks(rdpUpdate* update)

{

	rdpPointerUpdate* pointer = update->pointer;

	pointer->PointerPosition = update_pointer_position;

	pointer->PointerSystem = update_pointer_system;

	pointer->PointerColor = update_pointer_color;

	pointer->PointerNew = update_pointer_new;

	pointer->PointerCached = update_pointer_cached;

}

rdpPointerCache* pointer_cache_new(rdpSettings* settings)

{

	rdpPointerCache* pointer_cache;

	pointer_cache = (rdpPointerCache*) calloc(1, sizeof(rdpPointerCache));

	if (!pointer_cache)

		return NULL;

	pointer_cache->settings = settings;

	pointer_cache->cacheSize = settings->PointerCacheSize;

	pointer_cache->update = ((freerdp*) settings->instance)->update;

	pointer_cache->entries = (rdpPointer**) calloc(pointer_cache->cacheSize,

	                         sizeof(rdpPointer*));

	if (!pointer_cache->entries)

	{

		free(pointer_cache);

		return NULL;

	}

	return pointer_cache;

}

void pointer_cache_free(rdpPointerCache* pointer_cache)

{

	if (pointer_cache != NULL)

	{

		UINT32 i;

		rdpPointer* pointer;

		for (i = 0; i < pointer_cache->cacheSize; i++)

		{

			pointer = pointer_cache->entries[i];

			pointer_free(pointer_cache->update->context, pointer);

		}

		free(pointer_cache->entries);

		free(pointer_cache);

	}

}

POINTER_COLOR_UPDATE* copy_pointer_color_update(rdpContext* context,

        const POINTER_COLOR_UPDATE* src)

{

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

	if (!dst || !src)

		goto fail;

	*dst = *src;

	if (src->lengthAndMask > 0)

	{

		dst->andMaskData = calloc(src->lengthAndMask, sizeof(BYTE));

		if (!dst->andMaskData)

			goto fail;

		memcpy(dst->andMaskData, src->andMaskData, src->lengthAndMask);

	}

	if (src->lengthXorMask > 0)

	{

		dst->xorMaskData = calloc(src->lengthXorMask, sizeof(BYTE));

		if (!dst->xorMaskData)

			goto fail;

		memcpy(dst->xorMaskData, src->xorMaskData, src->lengthXorMask);

	}

	return dst;

fail:

	free_pointer_color_update(context, dst);

	return NULL;

}

void free_pointer_color_update(rdpContext* context, POINTER_COLOR_UPDATE* pointer)

{

	if (!pointer)

		return;

	free(pointer->xorMaskData);

	free(pointer->andMaskData);

	free(pointer);

}

POINTER_NEW_UPDATE* copy_pointer_new_update(rdpContext* context, const POINTER_NEW_UPDATE* src)

{

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

	if (!dst || !src)

		goto fail;

	*dst = *src;

	if (src->colorPtrAttr.lengthAndMask > 0)

	{

		dst->colorPtrAttr.andMaskData = calloc(src->colorPtrAttr.lengthAndMask, sizeof(BYTE));

		if (!dst->colorPtrAttr.andMaskData)

			goto fail;

		memcpy(dst->colorPtrAttr.andMaskData, src->colorPtrAttr.andMaskData,

		       src->colorPtrAttr.lengthAndMask);

	}

	if (src->colorPtrAttr.lengthXorMask > 0)

	{

		dst->colorPtrAttr.xorMaskData = calloc(src->colorPtrAttr.lengthXorMask, sizeof(BYTE));

		if (!dst->colorPtrAttr.xorMaskData)

			goto fail;

		memcpy(dst->colorPtrAttr.xorMaskData, src->colorPtrAttr.xorMaskData,

		       src->colorPtrAttr.lengthXorMask);

	}

	return dst;

fail:

	free_pointer_new_update(context, dst);

	return NULL;

}

void free_pointer_new_update(rdpContext* context, POINTER_NEW_UPDATE* pointer)

{

	if (!pointer)

		return;

	free(pointer->colorPtrAttr.xorMaskData);

	free(pointer->colorPtrAttr.andMaskData);

	free(pointer);

}

POINTER_CACHED_UPDATE* copy_pointer_cached_update(rdpContext* context,

        const POINTER_CACHED_UPDATE* pointer)

{

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

	if (!dst)

		goto fail;

	*dst = *pointer;

	return dst;

fail:

	free_pointer_cached_update(context, dst);

	return NULL;

}

void free_pointer_cached_update(rdpContext* context, POINTER_CACHED_UPDATE* pointer)

{

	free(pointer);

}

void free_pointer_position_update(rdpContext* context, POINTER_POSITION_UPDATE* pointer)

{

	free(pointer);

}

POINTER_POSITION_UPDATE* copy_pointer_position_update(rdpContext* context,

        const POINTER_POSITION_UPDATE* pointer)

{

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

	if (!dst || !pointer)

		goto fail;

	*dst = *pointer;

	return dst;

fail:

	free_pointer_position_update(context, dst);

	return NULL;

}

void free_pointer_system_update(rdpContext* context, POINTER_SYSTEM_UPDATE* pointer)

{

	free(pointer);

}

POINTER_SYSTEM_UPDATE* copy_pointer_system_update(rdpContext* context,

        const POINTER_SYSTEM_UPDATE* pointer)

{

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

	if (!dst || !pointer)

		goto fail;

	*dst = *pointer;

	return dst;

fail:

	free_pointer_system_update(context, dst);

	return NULL;

}