axmol/cocos2dx/textures/CCTextureCache.cpp

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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#include "CCTextureCache.h"


#include "CCTextureCache.h"
#include "CCTexture2D.h"
#include "ccMacros.h"
//#include "../CCDirector.h"
//#include "Support/CCFileUtils.h"

/// @todo EAGLContext static EAGLContext *auxEAGLcontext = NULL;

using namespace std;



class CCAsyncObject : NSObject
{
public:
	fpAsyncCallback m_pfnCallback;
	NSObject* m_pTarget;
	std::string *  m_pData;
public:
	CCAsyncObject();
	~CCAsyncObject()
	{
		CCLOGINFO("cocos2d: deallocing CCAsyncObject.");
		CCX_SAFE_DELETE(m_pTarget);
		CCX_SAFE_DELETE(m_pData);
	}
};

// implementation CCTextureCache

// TextureCache - Alloc, Init & Dealloc
static CCTextureCache *g_sharedTextureCache;

CCTextureCache * CCTextureCache::sharedTextureCache()
{
	if (!g_sharedTextureCache)
		g_sharedTextureCache = new CCTextureCache();

	return g_sharedTextureCache;
}

CCTextureCache::CCTextureCache()
{
	NSAssert(sharedTextureCache == NULL, "Attempted to allocate a second instance of a singleton.");
/** @todo NSMutableDictionary	, NSLock
		textures = [[NSMutableDictionary dictionaryWithCapacity: 10] retain];
		dictLock = [[NSLock alloc] init];
		contextLock = [[NSLock alloc] init];*/
}

CCTextureCache::~CCTextureCache()
{
	CCLOG("cocos2d: deallocing CCTextureCache.");
/// @todo release
// 	[textures release];
// 	[dictLock release];
// 	[contextLock release];
// 	[auxEAGLcontext release];
// 	auxEAGLcontext = nil;
// 	sharedTextureCache = nil;
// 	[super dealloc];
}

void CCTextureCache::purgeSharedTextureCache()
{
	CCX_SAFE_RELEASE(g_sharedTextureCache);
}


std::string CCTextureCache::description()
{
	/** @todo CCMutableDictionary
	return [NSString stringWithFormat:@"<%@ = %08X | num of textures =  %i>", [self class], self, [textures count]];
	char des[100];
	sprintf_s(des, 100, "<CCTextureCache | num of textures = %d>", m_pTextures->count());
	string ret(des);

	return ret;*/
	return NULL;
}


// TextureCache - Add Images
void CCTextureCache::addImageWithAsyncObject(CCAsyncObject* async)
{
	/** @todo
	NSAutoreleasePool *autoreleasepool = [[NSAutoreleasePool alloc] init];

	// textures will be created on the main OpenGL context
	// it seems that in SDK 2.2.x there can't be 2 threads creating textures at the same time
	// the lock is used for this purpose: issue #472
	[contextLock lock];
	if( auxEAGLcontext == nil ) {
		auxEAGLcontext = [[EAGLContext alloc]
initWithAPI:kEAGLRenderingAPIOpenGLES1
sharegroup:[[[[CCDirector sharedDirector] openGLView] context] sharegroup]];

		if( ! auxEAGLcontext )
			CCLOG(@"cocos2d: TextureCache: Could not create EAGL context");
	}

	if( [EAGLContext setCurrentContext:auxEAGLcontext] ) {

		// load / create the texture
		CCTexture2D *tex = [self addImage:async.data];

		// The callback will be executed on the main thread
		[async.target performSelectorOnMainThread:async.selector withObject:tex waitUntilDone:NO];

		[EAGLContext setCurrentContext:nil];
	} else {
		CCLOG(@"cocos2d: TetureCache: EAGLContext error");
	}
	[contextLock unlock];

	[autoreleasepool release];*/
}

/** @todo
-(void) addImageAsync: (string & ) filename target:(id)target selector:(SEL)selector
{
	NSAssert(filename != nil, @"TextureCache: fileimage MUST not be nill");

	// optimization

	CCTexture2D * tex;

	if( (tex=[textures objectForKey: filename] ) ) {
		[target performSelector:selector withObject:tex];
		return;
	}

	// schedule the load

	CCAsyncObject *asyncObject = [[CCAsyncObject alloc] init];
	asyncObject.selector = selector;
	asyncObject.target = target;
	asyncObject.data = filename;

	[NSThread detachNewThreadSelector:@selector(addImageWithAsyncObject:) toTarget:self withObject:asyncObject];
	[asyncObject release];
}*/

CCTexture2D * CCTextureCache::addImage(string & path)
{
	NSAssert(!path.empty(), "TextureCache: fileimage MUST not be nill");

	CCTexture2D * tex = NULL;

	// MUTEX:
	// Needed since addImageAsync calls this method from a different thread
	/** todo
	[dictLock lock];

	tex=[textures objectForKey: path];

	if( ! tex ) {

		// Split up directory and filename
		string & fullpath = [CCFileUtils fullPathFromRelativePath: path ];

		// all images are handled by UIImage except PVR extension that is handled by our own handler
		if ( [[path lowercaseString] hasSuffix:@".pvr"] )
			tex = [self addPVRTCImage:fullpath];
		else {

			// prevents overloading the autorelease pool
			UIImage *image = [ [UIImage alloc] initWithContentsOfFile: fullpath ];
			tex = [ [CCTexture2D alloc] initWithImage: image ];
			[image release];


			if( tex )
				[textures setObject: tex forKey:path];
			else
				CCLOG(@"cocos2d: Couldn't add image:%@ in CCTextureCache", path);


			[tex release];
		}
	}

	[dictLock unlock];
*/
	return tex;
}

CCTexture2D* CCTextureCache::addPVRTCImage(string & path, int bpp, bool hasAlpha, int width)
{
	
	NSAssert(!path.empty(), "TextureCache: fileimage MUST not be nill");
	NSAssert( bpp==2 || bpp==4, "TextureCache: bpp must be either 2 or 4");

	CCTexture2D * tex;
/** @todo
	if( (tex=[textures objectForKey: path] ) ) {
		return tex;
	}

	// Split up directory and filename
	string & fullpath = [CCFileUtils fullPathFromRelativePath:path];

	NSData *nsdata = [[NSData alloc] initWithContentsOfFile:fullpath];
	tex = [[CCTexture2D alloc] initWithPVRTCData:[nsdata bytes] level:0 bpp:bpp hasAlpha:alpha length:w];
	if( tex )
		[textures setObject: tex forKey:path];
	else
		CCLOG(@"cocos2d: Couldn't add PVRTCImage:%@ in CCTextureCache",path);

	[nsdata release];
*/
	tex->autorelease();
	return tex;
}

CCTexture2D * CCTextureCache::addPVRTCImage(string &  fileimage)
{
	NSAssert(!fileimage.empty(), "TextureCache: fileimage MUST not be nill");

	CCTexture2D * tex;
/** @todo
	if( (tex=[textures objectForKey: fileimage] ) ) {
		return tex;
	}

	tex = [[CCTexture2D alloc] initWithPVRTCFile: fileimage];
	if( tex )
		[textures setObject: tex forKey:fileimage];
	else
		CCLOG(@"cocos2d: Couldn't add PVRTCImage:%@ in CCTextureCache",fileimage);	
*/
	tex->autorelease();
	return tex;
}

/** @todo
-(CCTexture2D*) addCGImage: (CGImageRef) imageref forKey: (string & )key
{
	NSAssert(imageref != nil, @"TextureCache: image MUST not be nill");

	CCTexture2D * tex = nil;

	// If key is nil, then create a new texture each time
	if( key && (tex=[textures objectForKey: key] ) ) {
		return tex;
	}

	// prevents overloading the autorelease pool
	UIImage *image = [[UIImage alloc] initWithCGImage:imageref];
	tex = [[CCTexture2D alloc] initWithImage: image];
	[image release];

	if(tex && key)
		[textures setObject: tex forKey:key];
	else
		CCLOG(@"cocos2d: Couldn't add CGImage in CCTextureCache");

	return [tex autorelease];
}*/

// TextureCache - Remove

void CCTextureCache::removeAllTextures()
{
	/// @todo [textures removeAllObjects];
}

void CCTextureCache::removeUnusedTextures()
{
	/** @todo
	NSArray *keys = [textures allKeys];
	for( id key in keys ) {
		id value = [textures objectForKey:key];		
		if( [value retainCount] == 1 ) {
			CCLOG(@"cocos2d: CCTextureCache: removing unused texture: %@", key);
			[textures removeObjectForKey:key];
		}
	}*/
}

void CCTextureCache::removeTexture(CCTexture2D* tex)
{
	/** @todo
	if( ! tex )
		return;

	NSArray *keys = [textures allKeysForObject:tex];

	for( NSUInteger i = 0; i < [keys count]; i++ )
		[textures removeObjectForKey:[keys objectAtIndex:i]];*/
}

void CCTextureCache::removeTextureForKey(string &  textureKeyName)
{
	if( textureKeyName.empty() )
		return;

/// @todo	[textures removeObjectForKey:textureKeyName];
}