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96 lines
3.4 KiB
96 lines
3.4 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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////////////////////////////////////////////////////////////////////////////// |
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// // |
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// plSoundDeswizzler - Quick helper class to extract a single channel of // |
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// data from stereo (or more)-channel data. // |
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// // |
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////////////////////////////////////////////////////////////////////////////// |
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#include "HeadSpin.h" |
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#include "plSoundDeswizzler.h" |
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plSoundDeswizzler::plSoundDeswizzler( void *srcPtr, uint32_t srcLength, uint8_t numChannels, uint32_t sampleSize ) |
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{ |
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fNumSamples = srcLength / sampleSize; |
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fSampleSize = sampleSize; |
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fStride = fSampleSize * numChannels; |
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fData = (uint8_t *)srcPtr; |
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fOwnsData = false; |
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} |
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plSoundDeswizzler::plSoundDeswizzler( uint32_t srcLength, uint8_t numChannels, uint32_t sampleSize ) |
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{ |
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fNumSamples = srcLength / sampleSize; |
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fSampleSize = sampleSize; |
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fStride = fSampleSize * numChannels; |
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fData = new uint8_t[ srcLength ]; |
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fOwnsData = true; |
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} |
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plSoundDeswizzler::~plSoundDeswizzler() |
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{ |
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if( fOwnsData ) |
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delete [] fData; |
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} |
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void plSoundDeswizzler::Extract( uint8_t channelSelect, void *dest, uint32_t numBytesToProcess ) |
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{ |
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uint8_t *srcPtr = fData + channelSelect * fSampleSize; |
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uint8_t *destPtr = (uint8_t *)dest; |
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uint32_t i; |
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if( numBytesToProcess == 0 ) |
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numBytesToProcess = fNumSamples; |
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else |
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numBytesToProcess /= fStride; |
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// Extract! |
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for( i = 0; i < numBytesToProcess; i++ ) |
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{ |
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memcpy( destPtr, srcPtr, fSampleSize ); |
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destPtr += fSampleSize; |
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srcPtr += fStride; |
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} |
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}
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