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81 lines
2.4 KiB
81 lines
2.4 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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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 "hsTypes.h" |
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#include "plSoundDeswizzler.h" |
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#include <string.h> |
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plSoundDeswizzler::plSoundDeswizzler( void *srcPtr, UInt32 srcLength, UInt8 numChannels, UInt32 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 *)srcPtr; |
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fOwnsData = false; |
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} |
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plSoundDeswizzler::plSoundDeswizzler( UInt32 srcLength, UInt8 numChannels, UInt32 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 = TRACKED_NEW UInt8[ 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 channelSelect, void *dest, UInt32 numBytesToProcess ) |
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{ |
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UInt8 *srcPtr = fData + channelSelect * fSampleSize; |
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UInt8 *destPtr = (UInt8 *)dest; |
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UInt32 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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