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Diffstat (limited to 'indra/llcommon/bitpack.h')
| -rwxr-xr-x | indra/llcommon/bitpack.h | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/indra/llcommon/bitpack.h b/indra/llcommon/bitpack.h deleted file mode 100755 index 037300dd14..0000000000 --- a/indra/llcommon/bitpack.h +++ /dev/null @@ -1,208 +0,0 @@ -/** - * @file bitpack.h - * @brief Convert data to packed bit stream - * - * $LicenseInfo:firstyear=2000&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2010, Linden Research, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License only. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA - * $/LicenseInfo$ - */ - -#ifndef LL_BITPACK_H -#define LL_BITPACK_H - -#include "llerror.h" - -const U32 MAX_DATA_BITS = 8; - - -class LLBitPack -{ -public: - LLBitPack(U8 *buffer, U32 max_size) : mBuffer(buffer), mBufferSize(0), mLoad(0), mLoadSize(0), mTotalBits(0), mMaxSize(max_size) - { - } - - ~LLBitPack() - { - } - - void resetBitPacking() - { - mLoad = 0; - mLoadSize = 0; - mTotalBits = 0; - mBufferSize = 0; - } - - U32 bitPack(U8 *total_data, U32 total_dsize) - { - U32 dsize; - U8 data; - - while (total_dsize > 0) - { - if (total_dsize > MAX_DATA_BITS) - { - dsize = MAX_DATA_BITS; - total_dsize -= MAX_DATA_BITS; - } - else - { - dsize = total_dsize; - total_dsize = 0; - } - - data = *total_data++; - - data <<= (MAX_DATA_BITS - dsize); - while (dsize > 0) - { - if (mLoadSize == MAX_DATA_BITS) - { - *(mBuffer + mBufferSize++) = mLoad; - if (mBufferSize > mMaxSize) - { - llerror("mBufferSize exceeding mMaxSize!", 0); - } - mLoadSize = 0; - mLoad = 0x00; - } - mLoad <<= 1; - mLoad |= (data >> (MAX_DATA_BITS - 1)); - data <<= 1; - mLoadSize++; - mTotalBits++; - dsize--; - } - } - return mBufferSize; - } - - U32 bitCopy(U8 *total_data, U32 total_dsize) - { - U32 dsize; - U8 data; - - while (total_dsize > 0) - { - if (total_dsize > MAX_DATA_BITS) - { - dsize = MAX_DATA_BITS; - total_dsize -= MAX_DATA_BITS; - } - else - { - dsize = total_dsize; - total_dsize = 0; - } - - data = *total_data++; - - while (dsize > 0) - { - if (mLoadSize == MAX_DATA_BITS) - { - *(mBuffer + mBufferSize++) = mLoad; - if (mBufferSize > mMaxSize) - { - llerror("mBufferSize exceeding mMaxSize!", 0); - } - mLoadSize = 0; - mLoad = 0x00; - } - mLoad <<= 1; - mLoad |= (data >> (MAX_DATA_BITS - 1)); - data <<= 1; - mLoadSize++; - mTotalBits++; - dsize--; - } - } - return mBufferSize; - } - - U32 bitUnpack(U8 *total_retval, U32 total_dsize) - { - U32 dsize; - U8 *retval; - - while (total_dsize > 0) - { - if (total_dsize > MAX_DATA_BITS) - { - dsize = MAX_DATA_BITS; - total_dsize -= MAX_DATA_BITS; - } - else - { - dsize = total_dsize; - total_dsize = 0; - } - - retval = total_retval++; - *retval = 0x00; - while (dsize > 0) - { - if (mLoadSize == 0) - { -#ifdef _DEBUG - if (mBufferSize > mMaxSize) - { - llerrs << "mBufferSize exceeding mMaxSize" << llendl; - llerrs << mBufferSize << " > " << mMaxSize << llendl; - } -#endif - mLoad = *(mBuffer + mBufferSize++); - mLoadSize = MAX_DATA_BITS; - } - *retval <<= 1; - *retval |= (mLoad >> (MAX_DATA_BITS - 1)); - mLoadSize--; - mLoad <<= 1; - dsize--; - } - } - return mBufferSize; - } - - U32 flushBitPack() - { - if (mLoadSize) - { - mLoad <<= (MAX_DATA_BITS - mLoadSize); - *(mBuffer + mBufferSize++) = mLoad; - if (mBufferSize > mMaxSize) - { - llerror("mBufferSize exceeding mMaxSize!", 0); - } - mLoadSize = 0; - } - return mBufferSize; - } - - U8 *mBuffer; - U32 mBufferSize; - U8 mLoad; - U32 mLoadSize; - U32 mTotalBits; - U32 mMaxSize; -}; - -#endif |