00001 /* 00002 Copyright (c) 2009, The Barbarian Group 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Cinder.h" 00026 #include "cinder/audio/Io.h" 00027 #include "cinder/audio/Buffer.h" 00028 00029 #include <iostream> 00030 00031 namespace cinder { namespace audio { 00032 00033 typedef shared_ptr<class SourceCallback> SourceCallbackRef; 00034 typedef shared_ptr<class LoaderSourceCallback> LoaderSourceFileRef; 00035 00036 //TODO: maybe change this to use a cinder Audio buffer that you fill? 00037 typedef void (*CallbackFunction)( uint64_t inSampleOffset, uint32_t *ioSampleCount, Buffer *ioBuffer ); 00038 00039 class Callback { 00040 private: 00041 struct Obj { 00042 Obj( CallbackFunction aCallback, uint32_t aSampleRate, uint16_t aChannelCount, uint16_t aBitsPerSample, uint16_t aBlockAlign ); 00043 ~Obj(); 00044 CallbackFunction mCallback; 00045 uint32_t mSampleRate; 00046 uint16_t mChannelCount; 00047 uint16_t mBitsPerSample; //Significant Bits Per Sample 00048 uint16_t mBlockAlign; 00049 }; 00050 00051 public: 00052 Callback() {} 00053 Callback( CallbackFunction aCallback, uint32_t aSampleRate = 44100, uint16_t aChannelCount = 2, uint16_t aBitsPerSample = 32, uint16_t aBlockAlign = 8 ); 00054 ~Callback() {} 00055 00056 operator SourceRef() const; 00057 00058 uint32_t getSampleRate() const { return mObj->mSampleRate; } 00059 uint16_t getChannelCount() const { return mObj->mChannelCount; } 00060 uint16_t getBitsPerSample() const { return mObj->mBitsPerSample; } 00061 uint16_t getBlockAlign() const { return mObj->mBlockAlign; } 00062 private: 00063 shared_ptr<Callback::Obj> mObj; 00064 00065 friend class SourceCallback; 00066 public: 00068 00069 Callback( const Callback &other ) { mObj = other.mObj; } 00070 Callback& operator=( const Callback &other ) { mObj = other.mObj; return *this; } 00071 bool operator==( const Callback &other ) { return mObj == other.mObj; } 00072 typedef shared_ptr<Obj> Callback::*unspecified_bool_type; 00073 operator unspecified_bool_type() { return ( mObj.get() == 0 ) ? 0 : &Callback::mObj; } 00074 void reset() { mObj.reset(); } 00076 }; 00077 00078 }} //namespace