C++ OGRE_FREE函数代码示例

	void FileSystemLayer::getConfigPaths()
	{
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
		// try to determine the application's path
		DWORD bufsize = 256;
		char* resolved = 0;
		do
		{
			char* buf = OGRE_ALLOC_T(char, bufsize, Ogre::MEMCATEGORY_GENERAL);
			DWORD retval = GetModuleFileName(NULL, buf, bufsize);
			if (retval == 0)
			{
				// failed
				OGRE_FREE(buf, Ogre::MEMCATEGORY_GENERAL);
				break;
			}

			if (retval < bufsize)
			{
				// operation was successful.
				resolved = buf;
			}
			else
			{
				// buffer was too small, grow buffer and try again
				OGRE_FREE(buf, Ogre::MEMCATEGORY_GENERAL);
				bufsize <<= 1;
			}
		} while (!resolved);

		Ogre::String appPath = resolved;
		if (resolved)
			OGRE_FREE(resolved, Ogre::MEMCATEGORY_GENERAL);
		if (!appPath.empty())
		{
			// need to strip the application filename from the path
			Ogre::String::size_type pos = appPath.rfind('\\');
			if (pos != Ogre::String::npos)
				appPath.erase(pos);
		}
		else
		{
			// fall back to current working dir
			appPath = ".";
		}

#elif OGRE_PLATFORM == OGRE_PLATFORM_WINRT
		Ogre::String appPath;
		if(!widePathToOgreString(appPath, Windows::ApplicationModel::Package::Current->InstalledLocation->Path->Data()))
		{
			// fallback to current working dir
			appPath = ".";
		}
#endif

		// use application path as config search path
		mConfigPaths.push_back(appPath + '\\');
	}

	/*/////////////////////////////////////////////////////////////////*/
	bool OgreOggStreamSound::_stream(ALuint buffer)
	{
		std::vector<char> audioData;
		char* data;
		int  section = 0;
		int  result = 0;

		// Create buffer
		data = OGRE_ALLOC_T(char, mBufferSize, Ogre::MEMCATEGORY_GENERAL);
		memset(data, 0, mBufferSize);
		
		// Read only what was asked for
		while( !mStreamEOF && (static_cast<int>(audioData.size()) < mBufferSize) )
		{
			int  bytes = 0;
			// Read up to a buffer's worth of data
			bytes = ov_read(&mOggStream, data, static_cast<int>(mBufferSize), 0, 2, 1, &section);
			// EOF check
			if (bytes == 0)
			{
				// If set to loop wrap to start of stream
				if ( mLoop && mSeekable )
				{
					if ( ov_time_seek(&mOggStream, 0 + mLoopOffset)!= 0 )
					{
						Ogre::LogManager::getSingleton().logMessage("***--- OgreOggStream::_stream() - ERROR looping stream, ogg file NOT seekable!");
						break;
					}
				}
				else
				{
					mStreamEOF=true;
					// Don't loop - finish.
					break;
				}
			}
			// Append to end of buffer
			audioData.insert(audioData.end(), data, data + bytes);
			// Keep track of read data
			result+=bytes;
		}

		// EOF
		if(result == 0)
		{
			OGRE_FREE(data, Ogre::MEMCATEGORY_GENERAL);
			return false;
		}

		alGetError();
		// Copy buffer data
		alBufferData(buffer, mFormat, &audioData[0], static_cast<ALsizei>(audioData.size()), mVorbisInfo->rate);

		// Cleanup
		OGRE_FREE(data, Ogre::MEMCATEGORY_GENERAL);

		return true;
	}

    //---------------------------------------------------------------------
    void DeflateStream::destroy()
    {
        if (getAccessMode() == READ)
            inflateEnd(mZStream);

        OGRE_FREE(mZStream, MEMCATEGORY_GENERAL);
        mZStream = 0;
        OGRE_FREE(mTmp, MEMCATEGORY_GENERAL);
        mTmp = 0;
    }

	//-----------------------------------------------------------------------
	bool ConvexBody::operator == ( const ConvexBody& rhs ) const
	{
		if ( getPolygonCount() != rhs.getPolygonCount() )
			return false;

		// Compare the polygons. They may not be in correct order.
		// A correct convex body does not have identical polygons in its body.
		bool *bChecked = OGRE_ALLOC_T(bool, getPolygonCount(), MEMCATEGORY_SCENE_CONTROL);
		for ( size_t i=0; i<getPolygonCount(); ++i )
		{
			bChecked[ i ] = false;
		}

		for ( size_t i=0; i<getPolygonCount(); ++i )
		{
			bool bFound = false;

			for ( size_t j=0; j<getPolygonCount(); ++j )
			{
				const Polygon& pA = getPolygon( i );
				const Polygon& pB = rhs.getPolygon( j );

				if ( pA == pB )
				{
					bFound = true;
					bChecked[ i ] = true;
					break;
				}
			}

			if ( bFound == false )
			{
				OGRE_FREE(bChecked, MEMCATEGORY_SCENE_CONTROL);
				bChecked = 0;
				return false;
			}
		}

		for ( size_t i=0; i<getPolygonCount(); ++i )
		{
			if ( bChecked[ i ] != true )
			{
				OGRE_FREE(bChecked, MEMCATEGORY_SCENE_CONTROL);
				bChecked = 0;
				return false;
			}
		}

		OGRE_FREE(bChecked, MEMCATEGORY_SCENE_CONTROL);
		bChecked = 0;
		return true;
	}

	//-----------------------------------------------------------------------------
	Image & Image::operator = ( const Image &img )
	{
		if( m_pBuffer && m_bAutoDelete )
		{
			OGRE_FREE(m_pBuffer, MEMCATEGORY_GENERAL);
			m_pBuffer = NULL;
		}
		m_uWidth = img.m_uWidth;
		m_uHeight = img.m_uHeight;
		m_uDepth = img.m_uDepth;
		m_eFormat = img.m_eFormat;
		m_uSize = img.m_uSize;
		m_uFlags = img.m_uFlags;
		m_ucPixelSize = img.m_ucPixelSize;
		m_uNumMipmaps = img.m_uNumMipmaps;
		m_bAutoDelete = img.m_bAutoDelete;
		//Only create/copy when previous data was not dynamic data
		if( m_bAutoDelete )
		{
			m_pBuffer = OGRE_ALLOC_T(uchar, m_uSize, MEMCATEGORY_GENERAL);
			memcpy( m_pBuffer, img.m_pBuffer, m_uSize );
		}
		else
		{
			m_pBuffer = img.m_pBuffer;
		}

		return *this;
	}

	//---------------------------------------------------------------------
	void TerrainLayerBlendMap::blit(const PixelBox &src, const Box &dstBox)
	{
		const PixelBox* srcBox = &src;

		if (srcBox->getWidth() != dstBox.getWidth() || srcBox->getHeight() != dstBox.getHeight())
		{
			// we need to rescale src to dst size first (also confvert format)
			void* tmpData = OGRE_MALLOC(dstBox.getWidth() * dstBox.getHeight(), MEMCATEGORY_GENERAL);
			srcBox = OGRE_NEW PixelBox(dstBox.getWidth(), dstBox.getHeight(), 1, PF_L8, tmpData);

			Image::scale(src, *srcBox);
		}

		// pixel conversion
		PixelBox dstMemBox(dstBox, PF_L8, mData);
		PixelUtil::bulkPixelConversion(*srcBox, dstMemBox);

		if (srcBox != &src)
		{
			// free temp
			OGRE_FREE(srcBox->data, MEMCATEGORY_GENERAL);
			OGRE_DELETE srcBox;
			srcBox = 0;
		}

		Rect dRect(dstBox.left, dstBox.top, dstBox.right, dstBox.bottom);
		dirtyRect(dRect);

	}

	//-----------------------------------------------------------------------
	void CgProgram::freeCgArgs(void)
	{
		if (mCgArguments)
		{
			size_t index = 0;
			char* current = mCgArguments[index];
			while (current)
			{
				OGRE_FREE(current, MEMCATEGORY_RESOURCE);
				mCgArguments[index] = 0;
				current = mCgArguments[++index];
			}
			OGRE_FREE(mCgArguments, MEMCATEGORY_RESOURCE);
			mCgArguments = 0;
		}
	}

    //-----------------------------------------------------------------------------
    Image & Image::flipAroundX()
    {
        if( !mBuffer )
        {
            OGRE_EXCEPT( 
                Exception::ERR_INTERNAL_ERROR,
                "Can not flip an uninitialised texture",
                "Image::flipAroundX" );
        }
        
        mNumMipmaps = 0; // Image operations lose precomputed mipmaps

        size_t rowSpan = mWidth * mPixelSize;

        uchar *pTempBuffer = OGRE_ALLOC_T(uchar, rowSpan * mHeight, MEMCATEGORY_GENERAL);
        uchar *ptr1 = mBuffer, *ptr2 = pTempBuffer + ( ( mHeight - 1 ) * rowSpan );

        for( ushort i = 0; i < mHeight; i++ )
        {
            memcpy( ptr2, ptr1, rowSpan );
            ptr1 += rowSpan; ptr2 -= rowSpan;
        }

        memcpy( mBuffer, pTempBuffer, rowSpan * mHeight);

        OGRE_FREE(pTempBuffer, MEMCATEGORY_GENERAL);

        return *this;
    }

	void AndroidArchive::unload()
	{
		if(mBuffer)
		{
			OGRE_FREE(mBuffer, MEMCATEGORY_GENERAL);
			mBuffer = 0;
		}
	}

    //---------------------------------------------------------------------
    void Image::freeMemory()
    {
        //Only delete if this was not a dynamic image (meaning app holds & destroys buffer)
        if( mBuffer && mAutoDelete )
        {
            OGRE_FREE(mBuffer, MEMCATEGORY_GENERAL);
            mBuffer = NULL;
        }

    }

    //-----------------------------------------------------------------------
    void BspRaySceneQuery::clearTemporaries(void)
    {
        mObjsThisQuery.clear();
		vector<WorldFragment*>::type::iterator i;
        for (i = mSingleIntersections.begin(); i != mSingleIntersections.end(); ++i)
        {
            OGRE_FREE(*i, MEMCATEGORY_SCENE_CONTROL);
        }
        mSingleIntersections.clear();
    }

//-----------------------------------------------------------------------------
void D3D9HardwarePixelBuffer::bind(IDirect3DDevice9 *dev, IDirect3DVolume9 *volume, IDirect3DBaseTexture9 *mipTex)
{
    D3D9_DEVICE_ACCESS_CRITICAL_SECTION

    BufferResources* bufferResources = getBufferResources(dev);
    bool isNewBuffer = false;

    if (bufferResources == NULL)
    {
        bufferResources = createBufferResources();
        mMapDeviceToBufferResources[dev] = bufferResources;
        isNewBuffer = true;
    }

    bufferResources->mipTex = mipTex;
    bufferResources->volume = volume;
    bufferResources->volume->AddRef();
    
    D3DVOLUME_DESC desc;
    if(volume->GetDesc(&desc) != D3D_OK)
        OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "Could not get volume information",
         "D3D9HardwarePixelBuffer::D3D9HardwarePixelBuffer");
    mWidth = desc.Width;
    mHeight = desc.Height;
    mDepth = desc.Depth;
    mFormat = D3D9Mappings::_getPF(desc.Format);
    // Default
    mRowPitch = mWidth;
    mSlicePitch = mHeight*mWidth;
    mSizeInBytes = PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat);

    if (isNewBuffer && mOwnerTexture->isManuallyLoaded())
    {
        DeviceToBufferResourcesIterator it = mMapDeviceToBufferResources.begin();
        
        while (it != mMapDeviceToBufferResources.end())
        {
            if (it->second != bufferResources &&
                it->second->volume != NULL &&
                it->first->TestCooperativeLevel() == D3D_OK &&
                dev->TestCooperativeLevel() == D3D_OK)
            {
                Box fullBufferBox(0,0,0,mWidth,mHeight,mDepth);
                PixelBox dstBox(fullBufferBox, mFormat);

                dstBox.data = OGRE_MALLOC(getSizeInBytes(), MEMCATEGORY_RESOURCE);
                blitToMemory(fullBufferBox, dstBox, it->second, it->first);
                blitFromMemory(dstBox, fullBufferBox, bufferResources);
                OGRE_FREE(dstBox.data, MEMCATEGORY_RESOURCE);
                break;
            }
            ++it;           
        }               
    }
}

    //-----------------------------------------------------------------------
    void RenderTarget::writeContentsToFile(const String& filename)
    {
        PixelFormat pf = suggestPixelFormat();

        uchar *data = OGRE_ALLOC_T(uchar, mWidth * mHeight * PixelUtil::getNumElemBytes(pf), MEMCATEGORY_RENDERSYS);
        PixelBox pb(mWidth, mHeight, 1, pf, data);

        copyContentsToMemory(pb);

        Image().loadDynamicImage(data, mWidth, mHeight, 1, pf, false, 1, 0).save(filename);

        OGRE_FREE(data, MEMCATEGORY_RENDERSYS);
    }

    //---------------------------------------------------------------------
    void Serializer::readFloats(DataStreamPtr& stream, double* pDest, size_t count)
    {
		// Read from float, convert to double
		float* tmp = OGRE_ALLOC_T(float, count, MEMCATEGORY_GENERAL);
		float* ptmp = tmp;
        stream->read(tmp, sizeof(float) * count);
        flipFromLittleEndian(tmp, sizeof(float), count);
		// Convert to doubles (no cast required)
		while(count--)
		{
			*pDest++ = *ptmp++;
		}
		OGRE_FREE(tmp, MEMCATEGORY_GENERAL);
    }

  // bool publishFrame(Ogre::RenderWindow * render_object, const std::string frame_id)
  bool publishFrame(Ogre::RenderTexture * render_object, const std::string frame_id)
  {
    if (pub_.getTopic() == "")
    {
      return false;
    }
    if (frame_id == "")
    {
      return false;
    }
    // RenderTarget::writeContentsToFile() used as example
    int height = render_object->getHeight();
    int width = render_object->getWidth();
    // the results of pixel format have to be used to determine
    // image.encoding
    Ogre::PixelFormat pf = render_object->suggestPixelFormat();
    uint pixelsize = Ogre::PixelUtil::getNumElemBytes(pf);
    uint datasize = width * height * pixelsize;

    // 1.05 multiplier is to avoid crash when the window is resized.
    // There should be a better solution.
    uchar *data = OGRE_ALLOC_T(uchar, datasize * 1.05, Ogre::MEMCATEGORY_RENDERSYS);
    Ogre::PixelBox pb(width, height, 1, pf, data);
    render_object->copyContentsToMemory(pb, Ogre::RenderTarget::FB_AUTO);

    sensor_msgs::Image image;
    image.header.stamp = ros::Time::now();
    image.header.seq = image_id_++;
    image.header.frame_id = frame_id;
    image.height = height;
    image.width = width;
    image.step = pixelsize * width;
    if (pixelsize == 3)
      image.encoding = sensor_msgs::image_encodings::RGB8;  // would break if pf changes
    else if (pixelsize == 4)
      image.encoding = sensor_msgs::image_encodings::RGBA8;  // would break if pf changes
    else
    {
      ROS_ERROR_STREAM("unknown pixe format " << pixelsize << " " << pf);
    }
    image.is_bigendian = (OGRE_ENDIAN == OGRE_ENDIAN_BIG);
    image.data.resize(datasize);
    memcpy(&image.data[0], data, datasize);
    pub_.publish(image);

    OGRE_FREE(data, Ogre::MEMCATEGORY_RENDERSYS);
  }