/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * Brush 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/update.h>

#include <freerdp/freerdp.h>

#include <winpr/stream.h>

#include <freerdp/cache/brush.h>

#include "brush.h"

#define TAG FREERDP_TAG("cache.brush")

struct _BRUSH_ENTRY

{

	UINT32 bpp;

	void* entry;

};

typedef struct _BRUSH_ENTRY BRUSH_ENTRY;

struct rdp_brush_cache

{

	pPatBlt PatBlt;          /* 0 */

	pCacheBrush CacheBrush;  /* 1 */

	pPolygonSC PolygonSC;    /* 2 */

	pPolygonCB PolygonCB;    /* 3 */

	UINT32 paddingA[16 - 4]; /* 4 */

	UINT32 maxEntries;        /* 16 */

	UINT32 maxMonoEntries;    /* 17 */

	BRUSH_ENTRY* entries;     /* 18 */

	BRUSH_ENTRY* monoEntries; /* 19 */

	UINT32 paddingB[32 - 20]; /* 20 */

	/* internal */

	rdpSettings* settings;

};

static BOOL update_gdi_patblt(rdpContext* context, PATBLT_ORDER* patblt)

{

	BYTE style;

	BOOL ret = TRUE;

	rdpBrush* brush = &patblt->brush;

	const rdpCache* cache = context->cache;

	style = brush->style;

	if (brush->style & CACHED_BRUSH)

	{

		brush->data = brush_cache_get(cache->brush, brush->index, &brush->bpp);

		brush->style = 0x03;

	}

	IFCALLRET(cache->brush->PatBlt, ret, context, patblt);

	brush->style = style;

	return ret;

}

static BOOL update_gdi_polygon_sc(rdpContext* context, const POLYGON_SC_ORDER* polygon_sc)

{

	rdpCache* cache = context->cache;

	return IFCALLRESULT(TRUE, cache->brush->PolygonSC, context, polygon_sc);

}

static BOOL update_gdi_polygon_cb(rdpContext* context, POLYGON_CB_ORDER* polygon_cb)

{

	BYTE style;

	rdpBrush* brush = &polygon_cb->brush;

	rdpCache* cache = context->cache;

	BOOL ret = TRUE;

	style = brush->style;

	if (brush->style & CACHED_BRUSH)

	{

		brush->data = brush_cache_get(cache->brush, brush->index, &brush->bpp);

		brush->style = 0x03;

	}

	IFCALLRET(cache->brush->PolygonCB, ret, context, polygon_cb);

	brush->style = style;

	return ret;

}

static BOOL update_gdi_cache_brush(rdpContext* context, const CACHE_BRUSH_ORDER* cacheBrush)

{

	UINT32 length;

	void* data = NULL;

	rdpCache* cache = context->cache;

	length = cacheBrush->bpp * 64 / 8;

	data = malloc(length);

	if (!data)

		return FALSE;

	CopyMemory(data, cacheBrush->data, length);

	brush_cache_put(cache->brush, cacheBrush->index, data, cacheBrush->bpp);

	return TRUE;

}

void* brush_cache_get(rdpBrushCache* brushCache, UINT32 index, UINT32* bpp)

{

	void* entry;

	if (!brushCache)

		return NULL;

	if (!bpp)

		return NULL;

	if (*bpp == 1)

	{

		if (index >= brushCache->maxMonoEntries)

		{

			WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", *bpp, index);

			return NULL;

		}

		*bpp = brushCache->monoEntries[index].bpp;

		entry = brushCache->monoEntries[index].entry;

	}

	else

	{

		if (index >= brushCache->maxEntries)

		{

			WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", *bpp, index);

			return NULL;

		}

		*bpp = brushCache->entries[index].bpp;

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

	}

	if (entry == NULL)

	{

		WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) at index: 0x%08" PRIX32 "", *bpp, index);

		return NULL;

	}

	return entry;

}

void brush_cache_put(rdpBrushCache* brushCache, UINT32 index, void* entry, UINT32 bpp)

{

	if (bpp == 1)

	{

		if (index >= brushCache->maxMonoEntries)

		{

			WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", bpp, index);

			free(entry);

			return;

		}

		free(brushCache->monoEntries[index].entry);

		brushCache->monoEntries[index].bpp = bpp;

		brushCache->monoEntries[index].entry = entry;

	}

	else

	{

		if (index >= brushCache->maxEntries)

		{

			WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", bpp, index);

			free(entry);

			return;

		}

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

		brushCache->entries[index].bpp = bpp;

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

	}

}

void brush_cache_register_callbacks(rdpUpdate* update)

{

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

	cache->brush->PatBlt = update->primary->PatBlt;

	cache->brush->PolygonSC = update->primary->PolygonSC;

	cache->brush->PolygonCB = update->primary->PolygonCB;

	update->primary->PatBlt = update_gdi_patblt;

	update->primary->PolygonSC = update_gdi_polygon_sc;

	update->primary->PolygonCB = update_gdi_polygon_cb;

	update->secondary->CacheBrush = update_gdi_cache_brush;

}

rdpBrushCache* brush_cache_new(rdpSettings* settings)

{

	rdpBrushCache* brushCache;

	brushCache = (rdpBrushCache*)calloc(1, sizeof(rdpBrushCache));

	if (!brushCache)

		return NULL;

	brushCache->settings = settings;

	brushCache->maxEntries = 64;

	brushCache->maxMonoEntries = 64;

	brushCache->entries = (BRUSH_ENTRY*)calloc(brushCache->maxEntries, sizeof(BRUSH_ENTRY));

	if (!brushCache->entries)

		goto error_entries;

	brushCache->monoEntries = (BRUSH_ENTRY*)calloc(brushCache->maxMonoEntries, sizeof(BRUSH_ENTRY));

	if (!brushCache->monoEntries)

		goto error_mono;

	return brushCache;

error_mono:

	free(brushCache->entries);

error_entries:

	free(brushCache);

	return NULL;

}

void brush_cache_free(rdpBrushCache* brushCache)

{

	int i;

	if (brushCache)

	{

		if (brushCache->entries)

		{

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

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

			free(brushCache->entries);

		}

		if (brushCache->monoEntries)

		{

			for (i = 0; i < (int)brushCache->maxMonoEntries; i++)

				free(brushCache->monoEntries[i].entry);

			free(brushCache->monoEntries);

		}

		free(brushCache);

	}

}

void free_cache_brush_order(rdpContext* context, CACHE_BRUSH_ORDER* order)

{

	free(order);

}

CACHE_BRUSH_ORDER* copy_cache_brush_order(rdpContext* context, const CACHE_BRUSH_ORDER* order)

{

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

	if (!dst || !order)

		goto fail;

	*dst = *order;

	return dst;

fail:

	free_cache_brush_order(context, dst);

	return NULL;

}