Jason Felds
72 lines
2.9 KiB
C++
72 lines
2.9 KiB
C++
/* RageSoundReader - Data source for a RageSound. */
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#ifndef RAGE_SOUND_READER_H
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#define RAGE_SOUND_READER_H
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class RageSoundReader
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{
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public:
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virtual int GetLength() const = 0; /* ms */
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virtual int GetLength_Fast() const { return GetLength(); } /* ms */
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virtual int SetPosition( int iFrame ) = 0;
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virtual int Read( float *pBuf, int iFrames ) = 0;
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virtual ~RageSoundReader() { }
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virtual RageSoundReader *Copy() const = 0;
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virtual int GetSampleRate() const = 0;
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virtual unsigned GetNumChannels() const = 0;
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virtual bool SetProperty( const RString &sProperty, float fValue ) { return false; }
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virtual RageSoundReader *GetSource() { return NULL; }
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/* Return values for Read(). */
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enum {
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/* An error occurred; GetError() will return a description of the error. */
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ERROR = -1,
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END_OF_FILE = -2,
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/* A nonblocking buffer in the filter chain has underrun, and no data is
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* currently available. */
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WOULD_BLOCK = -3,
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/* The source position has changed in an expected way, such as looping.
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* Seeking manually will not cause this. */
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STREAM_LOOPED = -4,
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};
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/* GetNextSourceFrame() provides the source frame associated with the next frame
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* that will be read via Read(). GetStreamToSourceRatio() returns the ratio
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* for extrapolating the source frames of the remainder of the block. These
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* values are valid so long as no parameters are changed before the next Read(). */
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virtual int GetNextSourceFrame() const = 0;
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virtual float GetStreamToSourceRatio() const = 0;
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virtual RString GetError() const = 0;
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int RetriedRead( float *pBuffer, int iFrames, int *iSourceFrame = NULL, float *fRate = NULL );
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};
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#endif
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/*
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* Copyright (c) 2002-2003 Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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