axmol/cocos2dx/textures/CCTextureCache.cpp

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

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#include <stack>
#include <string>
#include <cctype>
#include "CCTextureCache.h"
#include "CCTexture2D.h"
#include "ccMacros.h"
#include "NSData.h"
#include "CCDirector.h"
#include "platform/platform.h"
#include "CCXFileUtils.h"
#include "CCXUIImage.h"

/// @todo EAGLContext static EAGLContext *auxEAGLcontext = NULL;
namespace   cocos2d {

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(g_sharedTextureCache == NULL, "Attempted to allocate a second instance of a singleton.");
	
	m_pTextures = new NSMutableDictionary<std::string, CCTexture2D*>();
	m_pTextures->retain();
	m_pDictLock = new NSLock();
	m_pContextLock = new NSLock();
}

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);
}


char * CCTextureCache::description()
{
	char *ret = new char[100];
	sprintf_s(ret, 100, "<CCTextureCache | Number of textures = %u>", m_pTextures->count());
	return ret;
}


// TextureCache - Add Images
void CCTextureCache::addImageWithAsyncObject(CCAsyncObject* async)
{
	/** @todo EAGLContext
	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 selector, NSThread*/
void CCTextureCache::addImageAsync(const char* filename, NSObject *target, fpAsyncCallback func)
{
	NSAssert(filename != NULL , "TextureCache: fileimage MUST not be nill");

	// optimization

//	CCTexture2D * tex;
// 
// 	if ( (tex = m_pTextures->objectForKey(filename)) )

// 	{

// 		target->

// 	}

// 	
// 	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(const char * path)
{
	NSAssert(path != NULL, "TextureCache: fileimage MUST not be NULL");

	CCTexture2D * texture = NULL;
	std::string temp(path);

	// MUTEX:
	// Needed since addImageAsync calls this method from a different thread
	
	m_pDictLock->lock();

	texture = m_pTextures->objectForKey(temp);

	if( ! texture ) {

		// Split up directory and filename
		std::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"] )
		for (unsigned int i = 0; i < temp.length(); ++i)
			temp[i] = tolower(temp[i]);
		if (std::string::npos != temp.find(".pvr"))
		{
#ifdef _POWERVR_SUPPORT_
			texture = this->addPVRTCImage(fullpath.c_str());
#endif
		}
		else
		{
			// prevents overloading the autorelease pool
			UIImage * image = new UIImage();
			if(! image->initWithContentsOfFile(fullpath))
			{
				delete image;
				return NULL;
			}
			texture = new CCTexture2D();
			texture->initWithImage(image);
			CCX_SAFE_DELETE(image);// image->release();

			if( texture )
				m_pTextures->setObject(texture, path);
			else
				CCLOG("cocos2d: Couldn't add image:%s in CCTextureCache", path);

			texture->release();
		}
	}

	m_pDictLock->unlock();

	return texture;
}

#ifdef _POWERVR_SUPPORT_
CCTexture2D* CCTextureCache::addPVRTCImage(const char* path, int bpp, bool hasAlpha, int width)
{
	
	NSAssert(path != NULL, "TextureCache: fileimage MUST not be nill");
	NSAssert( bpp==2 || bpp==4, "TextureCache: bpp must be either 2 or 4");

	CCTexture2D * texture;
	std::string temp(path);
	if ( (texture = m_pTextures->objectForKey(temp)) )
	{
		return texture;
	}
	
	// Split up directory and filename
	std::string fullpath( CCFileUtils::fullPathFromRelativePath(path) );

	NSData * data = NSData::dataWithContentsOfFile(fullpath);
	texture = new CCTexture2D();
	texture->initWithPVRTCData(data->bytes(), 0, bpp, hasAlpha, width);
	if( texture )
		m_pTextures->setObject(texture, temp);
	else
		CCLOG("cocos2d: Couldn't add PVRTCImage:%s in CCTextureCache",path);

	CCX_SAFE_DELETE(data);

	texture->autorelease();
	return texture;
}

CCTexture2D * CCTextureCache::addPVRTCImage(const char* fileimage)
{
	NSAssert(fileimage != NULL, "TextureCache: fileimage MUST not be nill");

	CCTexture2D * texture;
	std::string key(fileimage);
	if( (texture = m_pTextures->objectForKey(key)) ) 
	{
		return texture;
	}

	texture = new CCTexture2D();
	texture = texture->initWithPVRTCFile(fileimage);
	if( texture )
		m_pTextures-> setObject( texture, key);
	else
		CCLOG("cocos2d: Couldn't add PVRTCImage:%s in CCTextureCache",fileimage);	

	texture->autorelease();
	return texture;
}
#endif

/** @todo CGImageRef
-(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];
}*/
CCTexture2D* CCTextureCache::addUIImage(UIImage *image, const char *key)
{
	NSAssert(image != NULL, "TextureCache: image MUST not be nill");

	CCTexture2D * texture = NULL;

	// If key is nil, then create a new texture each time
	if( key && (texture = m_pTextures->objectForKey(key)) )
	{
		return texture;
	}

	// prevents overloading the autorelease pool
	texture = new CCTexture2D();
	texture->initWithImage(image);

	if(texture && key)
	{
		m_pTextures->setObject(texture, key);
	}
	else
	{
		CCLOG("cocos2d: Couldn't add UIImage in CCTextureCache");
	}
	texture->autorelease();
	return texture;
}

// TextureCache - Remove

void CCTextureCache::removeAllTextures()
{
	m_pTextures->removeAllObjects();
}

void CCTextureCache::removeUnusedTextures()
{
	std::vector<std::string> keys = m_pTextures->allKeys();
	std::vector<std::string>::iterator it;
	for (it = keys.begin(); it <= keys.end(); it++)
	{
		CCTexture2D *value = m_pTextures->objectForKey(*it);
		if (value->retainCount() == 1)
		{
			CCLOG("cocos2d: CCTextureCache: removing unused texture: %s", (*it).c_str());
			m_pTextures->removeObjectForKey(*it);
		}
	}
}

void CCTextureCache::removeTexture(CCTexture2D* texture)
{
	if( ! texture )
		return;

	std::vector<std::string> keys = m_pTextures->allKeysForObject(texture);

	for (unsigned int i = 0; i < keys.size(); i++)
	{
		m_pTextures->removeObjectForKey(keys[i]);
	}
}

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

	m_pTextures->removeObjectForKey(textureKeyName);
}

}//namespace   cocos2d