Branan Purvine-Riley
14 years ago
16 changed files with 297 additions and 302 deletions
@ -1,210 +0,0 @@
|
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/*==LICENSE==*
|
||||
|
||||
CyanWorlds.com Engine - MMOG client, server and tools |
||||
Copyright (C) 2011 Cyan Worlds, Inc. |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 3 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program 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 General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
You can contact Cyan Worlds, Inc. by email legal@cyan.com |
||||
or by snail mail at: |
||||
Cyan Worlds, Inc. |
||||
14617 N Newport Hwy |
||||
Mead, WA 99021 |
||||
|
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*==LICENSE==*/ |
||||
//////////////////////////////////////////////////////////////////////////////
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// //
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// plWAVClipBuffer - Helper class for writing out WAV data in a buffered //
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// manner, with support for clipping off the specified //
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// amount at the end, but without knowing beforehand //
|
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// exactly how much data we'll have. //
|
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// //
|
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// The algorithm goes something like this: we keep two buffers, both the //
|
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// size of the amount we want to clip. We then start filling in the first //
|
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// buffer, overflowing into the second buffer and wrapping back to the //
|
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// first again in a circular fashion. When we fill up one buffer and are //
|
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// about to advance to the next, we write that next buffer out. Why? //
|
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// Because we know that, even if we got no more data in, we have enough //
|
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// data in the first buffer to clip out the amount we want, so the other //
|
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// half (which will have older data, being a circular buffer) can be //
|
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// written out safely. //
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// //
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//////////////////////////////////////////////////////////////////////////////
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#include "hsTypes.h" |
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#include "plWAVClipBuffer.h" |
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#include "hsStream.h" |
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#include "hsUtils.h" |
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#include "plAudioCore/plWavFile.h" |
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//// Constructor/Destructor //////////////////////////////////////////////////
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plWAVClipBuffer::plWAVClipBuffer( UInt32 clipSize, CWaveFile *outFile ) |
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{ |
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fBuffers[ 0 ] = fBuffers[ 1 ] = nil; |
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fFlushCalled = true; |
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Init( clipSize, outFile ); |
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} |
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|
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plWAVClipBuffer::~plWAVClipBuffer() |
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{ |
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IShutdown(); |
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} |
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|
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//// Init & IShutdown ////////////////////////////////////////////////////////
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void plWAVClipBuffer::Init( UInt32 clipSize, CWaveFile *outFile ) |
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{ |
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IShutdown(); |
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if( clipSize > 0 ) |
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{ |
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fBuffers[ 0 ] = TRACKED_NEW UInt8[ clipSize ]; |
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fBuffers[ 1 ] = TRACKED_NEW UInt8[ clipSize ]; |
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memset( fBuffers[ 0 ], 0, clipSize ); |
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memset( fBuffers[ 1 ], 0, clipSize ); |
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} |
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fWhichBuffer = 0; |
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fBufferSize = clipSize; |
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fCursor = 0; |
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fFirstFlip = true; |
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fOutFile = outFile; |
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fFlushCalled = false; |
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} |
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|
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void plWAVClipBuffer::IShutdown( void ) |
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{ |
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hsAssert( fFlushCalled, "WAVClipBuffer shut down without flushing it!!!" ); |
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delete [] fBuffers[ 0 ]; |
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delete [] fBuffers[ 1 ]; |
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} |
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|
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//// WriteData ///////////////////////////////////////////////////////////////
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// The main workhorse; call this to add data to the buffer.
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hsBool plWAVClipBuffer::WriteData( UInt32 size, UInt8 *data ) |
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{ |
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while( size > 0 ) |
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{ |
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UInt32 toWrite = fBufferSize - fCursor; |
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if( size < toWrite ) |
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{ |
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// Just write, haven't filled a buffer yet
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memcpy( fBuffers[ fWhichBuffer ] + fCursor, data, size ); |
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data += size; |
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fCursor += size; |
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return true; // All done!
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} |
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// Fill up to the end of a buffer, then flip
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memcpy( fBuffers[ fWhichBuffer ] + fCursor, data, toWrite ); |
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data += toWrite; |
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fCursor += toWrite; |
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size -= toWrite; |
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// Flip now...
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fWhichBuffer = 1 - fWhichBuffer; |
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fCursor = 0; |
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// Now we can write out this buffer, since it'll be old data and
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// we have enough in the other buffer to clip with. The *only*
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// time we don't want to do this is the first time we flip, since
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// at that point, the buffer we just flipped to hasn't been filled yet.
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// (Every time afterwards, we'll always be flipping to a buffer with old
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// data).
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if( fFirstFlip ) |
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fFirstFlip = false; |
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else |
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{ |
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// Write it out before we overwrite it!
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UINT written; |
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HRESULT hr = fOutFile->Write( fBufferSize, fBuffers[ fWhichBuffer ], &written ); |
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if( FAILED( hr ) ) |
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{ |
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hsAssert( false, "ERROR writing WMA stream to WAV file" ); |
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return false; |
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} |
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else if( written != fBufferSize ) |
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{ |
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hsAssert( false, "Unable to write all of WMA stream to WAV file" ); |
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return false; |
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} |
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} |
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} |
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// Cleanly got here, so just return success
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return true; |
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} |
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//// Flush ///////////////////////////////////////////////////////////////////
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// Writes out the remaining data, minus our clip value (which is fBufferSize)
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// So here's our situation: at this point, one of two things could be true:
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//
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// 1) We haven't received enough data to clip by, at which point we don't
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// write any more and bail (this will be true if fFirstFlip is still true)
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//
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// 2) Our cursor is at 0, which means we have one filled buffer that hasn't been
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// written out and our current buffer is empty. At this point, we discard the
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// filled buffer (which is precisely the length we want to clip by) and we're done.
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//
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// 3) The buffer we're on should be partially filled, while the other one is older
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// data. So, we want to write out the older data and the partial buffer all the way,
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// except for the clip size. Since we can therefore never write out any data in the
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// partial buffer (since that count will always be less than the clip size and thus be
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// the second half of what we clip), we simply figure out how much of the other one we
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// clip and write out the rest.
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hsBool plWAVClipBuffer::Flush( void ) |
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{ |
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fFlushCalled = true; |
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if( fFirstFlip ) |
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return false; // We failed--not enough data to clip with
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if( fCursor == 0 ) |
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{ |
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// Our current buffer is empty, so the other buffer is precisely what we clip.
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// So just discard and return successfully
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return true; |
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} |
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// The hard case--we always discard the partial buffer we're on, so figure out
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// how much we want to save of the other buffer. The math is:
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// Partial buffer amount we're clipping = fCursor
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// Amount of other buffer we're clipping = fBufferSize - fCursor
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// Amount of other buffer we're writing = fBufferSize - ( fBufferSize - fCursor ) = fCursor
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// Go figure :)
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UInt32 toWrite = fCursor; |
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UINT written; |
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HRESULT hr = fOutFile->Write( toWrite, fBuffers[ 1 - fWhichBuffer ], &written ); |
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if( FAILED( hr ) ) |
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{ |
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hsAssert( false, "ERROR writing WMA stream to WAV file" ); |
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return false; |
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} |
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else if( written != toWrite ) |
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{ |
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hsAssert( false, "Unable to write all of WMA stream to WAV file" ); |
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return false; |
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} |
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// All done!
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return true; |
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} |
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@ -1,78 +0,0 @@
|
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/*==LICENSE==*
|
||||
|
||||
CyanWorlds.com Engine - MMOG client, server and tools |
||||
Copyright (C) 2011 Cyan Worlds, Inc. |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 3 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program 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 General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
You can contact Cyan Worlds, Inc. by email legal@cyan.com |
||||
or by snail mail at: |
||||
Cyan Worlds, Inc. |
||||
14617 N Newport Hwy |
||||
Mead, WA 99021 |
||||
|
||||
*==LICENSE==*/ |
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
// //
|
||||
// plWAVClipBuffer - Helper class for writing out WAV data in a buffered //
|
||||
// manner, with support for clipping off the specified //
|
||||
// amount at the end, but without knowing beforehand //
|
||||
// exactly how much data we'll have. //
|
||||
// //
|
||||
// The algorithm goes something like this: we keep two buffers, both the //
|
||||
// size of the amount we want to clip. We then start filling in the first //
|
||||
// buffer, overflowing into the second buffer and wrapping back to the //
|
||||
// first again in a circular fashion. When we fill up one buffer and are //
|
||||
// about to advance to the next, we write that next buffer out. Why? //
|
||||
// Because we know that, even if we got no more data in, we have enough //
|
||||
// data in the first buffer to clip out the amount we want, so the other //
|
||||
// half (which will have older data, being a circular buffer) can be //
|
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// written out safely. //
|
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// //
|
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//////////////////////////////////////////////////////////////////////////////
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|
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#ifndef _plWAVClipBuffer_h |
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#define _plWAVClipBuffer_h |
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//// Class Definition ////////////////////////////////////////////////////////
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class CWaveFile; |
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class plWAVClipBuffer |
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{ |
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public: |
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plWAVClipBuffer( UInt32 clipSize, CWaveFile *outFile ); |
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~plWAVClipBuffer(); |
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// Inits the buffer. Can re-init if you wish
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void Init( UInt32 clipSize, CWaveFile *outFile ); |
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// Writes/adds data to the buffer
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hsBool WriteData( UInt32 size, UInt8 *data ); |
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// Call at the end, flushes the buffer and performs the clipping
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hsBool Flush( void ); |
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protected: |
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UInt8 *fBuffers[ 2 ]; |
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UInt8 fWhichBuffer; // 0 or 1
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UInt32 fCursor, fBufferSize; |
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hsBool fFirstFlip, fFlushCalled; |
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CWaveFile *fOutFile; |
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void IShutdown( void ); |
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}; |
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#endif //_plWAVClipBuffer_h
|
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@ -0,0 +1,184 @@
|
||||
/*==LICENSE==*
|
||||
|
||||
CyanWorlds.com Engine - MMOG client, server and tools |
||||
Copyright (C) 2011 Cyan Worlds, Inc. |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 3 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program 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 General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
You can contact Cyan Worlds, Inc. by email legal@cyan.com |
||||
or by snail mail at: |
||||
Cyan Worlds, Inc. |
||||
14617 N Newport Hwy |
||||
Mead, WA 99021 |
||||
|
||||
*==LICENSE==*/ |
||||
//////////////////////////////////////////////////////////////////////////////
|
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// //
|
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// plCachedFileReader - Reads (and writes, how ironic) decompressed sound //
|
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// data that is temporarily held in a cache. //
|
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// //
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//// NOTES ///////////////////////////////////////////////////////////////////
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// //
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// 2011.04.24 - Created by dpogue. //
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// //
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//////////////////////////////////////////////////////////////////////////////
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|
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#include "hsTypes.h" |
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#include "plCachedFileReader.h" |
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//// Constructor/Destructor //////////////////////////////////////////////////
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|
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plCachedFileReader::plCachedFileReader(const char *path, |
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plAudioCore::ChannelSelect whichChan) |
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: fFileHandle(nil), fCurPosition(0) |
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{ |
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hsAssert(path != nil, "Invalid path specified in plCachedFileReader"); |
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|
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strncpy(fFilename, path, sizeof(fFilename)); |
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|
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/// Open the file as a plain binary stream
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fFileHandle = fopen(path, "rb"); |
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if (fFileHandle != nil) |
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{ |
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if (fread(&fHeader, 1, sizeof(plWAVHeader), fFileHandle) |
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!= sizeof(plWAVHeader)) |
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{ |
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IError("Invalid WAV file header in plCachedFileReader"); |
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return; |
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} |
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|
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// Check format
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if (fHeader.fFormatTag != kPCMFormatTag) |
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{ |
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IError("Invalid format in plCachedFileReader"); |
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return; |
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} |
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fseek(fFileHandle, 0, SEEK_END); |
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fDataLength = ftell(fFileHandle) - sizeof(plWAVHeader); |
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fseek(fFileHandle, sizeof(plWAVHeader), SEEK_SET); |
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} |
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} |
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plCachedFileReader::~plCachedFileReader() |
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{ |
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if (fFileHandle != nil) { |
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fclose(fFileHandle); |
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} |
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} |
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|
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void plCachedFileReader::IError(const char *msg) |
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{ |
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hsAssert(false, msg); |
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Close(); |
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} |
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plWAVHeader &plCachedFileReader::GetHeader() |
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{ |
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hsAssert(IsValid(), "GetHeader() called on an invalid cache file"); |
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|
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return fHeader; |
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} |
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|
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void plCachedFileReader::Close() |
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{ |
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if (fFileHandle != nil) |
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{ |
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fclose(fFileHandle); |
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fFileHandle = nil; |
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} |
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} |
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|
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UInt32 plCachedFileReader::GetDataSize() |
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{ |
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hsAssert(IsValid(), "GetDataSize() called on an invalid cache file"); |
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return fDataLength; |
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} |
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|
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float plCachedFileReader::GetLengthInSecs() |
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{ |
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hsAssert(IsValid(), "GetLengthInSecs() called on an invalid cache file"); |
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|
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return (float)fDataLength / (float)fHeader.fAvgBytesPerSec; |
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} |
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|
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hsBool plCachedFileReader::SetPosition(UInt32 numBytes) |
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{ |
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hsAssert(IsValid(), "SetPosition() called on an invalid cache file"); |
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|
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fCurPosition = numBytes; |
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|
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hsAssert(fCurPosition <= fDataLength, "Invalid position while seeking"); |
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|
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return !fseek(fFileHandle, sizeof(plWAVHeader) + fCurPosition, SEEK_SET); |
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} |
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|
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hsBool plCachedFileReader::Read(UInt32 numBytes, void *buffer) |
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{ |
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hsAssert(IsValid(), "Read() called on an invalid cache file"); |
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|
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size_t numRead = fread(buffer, 1, numBytes, fFileHandle); |
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|
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fCurPosition += numRead; |
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hsAssert(fCurPosition <= fDataLength, "Invalid position while reading"); |
||||
|
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return numRead >= numBytes; |
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} |
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|
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UInt32 plCachedFileReader::NumBytesLeft() |
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{ |
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hsAssert(IsValid(), "NumBytesLeft() called on an invalid cache file"); |
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hsAssert(fCurPosition <= fDataLength, "Invalid position while reading"); |
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|
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return fDataLength - fCurPosition; |
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} |
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|
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hsBool plCachedFileReader::OpenForWriting(const char *path, plWAVHeader &header) |
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{ |
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hsAssert(path != nil, "Invalid path specified in plCachedFileReader"); |
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|
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fHeader = header; |
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fCurPosition = 0; |
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fDataLength = 0; |
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strncpy(fFilename, path, sizeof(fFilename)); |
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|
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/// Open the file as a plain binary stream
|
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fFileHandle = fopen(path, "wb"); |
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|
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if (fFileHandle != nil) |
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{ |
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if (fwrite(&fHeader, 1, sizeof(plWAVHeader), fFileHandle) |
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!= sizeof(plWAVHeader)) |
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{ |
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IError("Could not write WAV file header in plCachedFileReader"); |
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return false; |
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} |
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} |
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|
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return fFileHandle != nil; |
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} |
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|
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UInt32 plCachedFileReader::Write(UInt32 bytes, void* buffer) |
||||
{ |
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hsAssert(IsValid(), "Write() called on an invalid cache file"); |
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|
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size_t written = fwrite(buffer, 1, bytes, fFileHandle); |
||||
|
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fCurPosition += written; |
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fDataLength += written; |
||||
|
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return (UInt32)written; |
||||
} |
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@ -0,0 +1,82 @@
|
||||
/*==LICENSE==*
|
||||
|
||||
CyanWorlds.com Engine - MMOG client, server and tools |
||||
Copyright (C) 2011 Cyan Worlds, Inc. |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 3 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program 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 General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
You can contact Cyan Worlds, Inc. by email legal@cyan.com |
||||
or by snail mail at: |
||||
Cyan Worlds, Inc. |
||||
14617 N Newport Hwy |
||||
Mead, WA 99021 |
||||
|
||||
*==LICENSE==*/ |
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
// //
|
||||
// plCachedFileReader - Reads (and writes, how ironic) decompressed sound //
|
||||
// data that is temporarily held in a cache. //
|
||||
// //
|
||||
//// NOTES ///////////////////////////////////////////////////////////////////
|
||||
// //
|
||||
// 2011.04.24 - Created by dpogue. //
|
||||
// //
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifndef _plcachedfilereader_h |
||||
#define _plcachedfilereader_h |
||||
|
||||
#include "plAudioFileReader.h" |
||||
|
||||
//// Class Definition ////////////////////////////////////////////////////////
|
||||
|
||||
class plCachedFileReader : public plAudioFileReader |
||||
{ |
||||
public: |
||||
plCachedFileReader(const char *path, |
||||
plAudioCore::ChannelSelect whichChan = plAudioCore::kAll); |
||||
virtual ~plCachedFileReader(); |
||||
|
||||
virtual plWAVHeader &GetHeader(); |
||||
|
||||
virtual void Close(); |
||||
|
||||
virtual UInt32 GetDataSize(); |
||||
virtual float GetLengthInSecs(); |
||||
|
||||
virtual hsBool SetPosition(UInt32 numBytes); |
||||
virtual hsBool Read(UInt32 numBytes, void *buffer); |
||||
virtual UInt32 NumBytesLeft(); |
||||
|
||||
virtual hsBool OpenForWriting(const char *path, plWAVHeader &header); |
||||
virtual UInt32 Write(UInt32 bytes, void *buffer); |
||||
|
||||
virtual hsBool IsValid() { return fFileHandle != nil; } |
||||
|
||||
protected: |
||||
enum |
||||
{ |
||||
kPCMFormatTag = 1 |
||||
}; |
||||
|
||||
char fFilename[512]; |
||||
FILE * fFileHandle; |
||||
plWAVHeader fHeader; |
||||
UInt32 fDataLength; |
||||
UInt32 fCurPosition; |
||||
|
||||
void IError(const char *msg); |
||||
}; |
||||
|
||||
#endif //_plcachedfilereader_h
|
||||
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Reference in new issue