amr_block_buf.cpp
上传用户:zhongxx05
上传日期:2007-06-06
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文件大小:3k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "hxstrutl.h"
- #include "amr_block_buf.h"
- #include "amr_frame_info.h"
- AMRBlockBuffer::AMRBlockBuffer() :
- m_ulBlockCount(0),
- m_ulBlockSize(0),
- m_ulMaxBlocks(0),
- m_pBlockBuf(0),
- m_pBlockSizes(0)
- {}
- AMRBlockBuffer::~AMRBlockBuffer()
- {
- delete [] m_pBlockBuf;
- m_pBlockBuf = 0;
- delete [] m_pBlockSizes;
- m_pBlockSizes = 0;
- }
- void AMRBlockBuffer::Init(AMRFlavor flavor, ULONG32 ulChannels)
- {
- m_ulBlockSize = 1 + ((CAMRFrameInfo::MaxFrameBits(flavor) + 7) >> 3);
- m_ulBlockCount = 0;
- }
- void AMRBlockBuffer::SetBlockSize(ULONG32 ulBlockIndex, ULONG32 ulBlockSize)
- {
- if (ulBlockIndex < m_ulBlockCount)
- m_pBlockSizes[ulBlockIndex] = ulBlockSize;
- }
- ULONG32 AMRBlockBuffer::GetBlockSize(ULONG32 ulBlockIndex) const
- {
- return (ulBlockIndex < m_ulBlockCount) ? m_pBlockSizes[ulBlockIndex] : 0;
- }
- UINT8* AMRBlockBuffer::GetBlockBuf(ULONG32 ulBlockIndex) const
- {
- UINT8* pRet = 0;
- if (m_pBlockBuf && (ulBlockIndex < m_ulBlockCount))
- {
- pRet = m_pBlockBuf + ulBlockIndex * m_ulBlockSize;
- }
- return pRet;
- }
- void AMRBlockBuffer::SetBlockCount(ULONG32 ulBlockCount)
- {
- if (ulBlockCount > m_ulMaxBlocks)
- {
- Resize(ulBlockCount);
- }
- m_ulBlockCount = ulBlockCount;
- // Clear sizes
- ::memset(m_pBlockSizes, 0, sizeof(ULONG32) * m_ulMaxBlocks);
- }
- ULONG32 AMRBlockBuffer::GetBlockCount() const
- {
- return m_ulBlockCount;
- }
- void AMRBlockBuffer::Resize(ULONG32 ulBlockCount)
- {
- m_ulMaxBlocks = ulBlockCount;
-
- delete [] m_pBlockBuf;
- m_pBlockBuf = new UINT8[m_ulMaxBlocks * m_ulBlockSize];
-
- delete [] m_pBlockSizes;
- m_pBlockSizes = new ULONG32[m_ulMaxBlocks];
- ::memset(m_pBlockSizes, 0, sizeof(ULONG32) * m_ulMaxBlocks);
- }