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+/*
+ 
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by
+ Apple Inc. ("Apple") in consideration of your agreement to the
+ following terms, and your use, installation, modification or
+ redistribution of this Apple software constitutes acceptance of these
+ terms.  If you do not agree with these terms, please do not use,
+ install, modify or redistribute this Apple software.
+ 
+ In consideration of your agreement to abide by the following terms, and
+ subject to these terms, Apple grants you a personal, non-exclusive
+ license, under Apple's copyrights in this original Apple software (the
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple
+ Software, with or without modifications, in source and/or binary forms;
+ provided that if you redistribute the Apple Software in its entirety and
+ without modifications, you must retain this notice and the following
+ text and disclaimers in all such redistributions of the Apple Software.
+ Neither the name, trademarks, service marks or logos of Apple Inc.
+ may be used to endorse or promote products derived from the Apple
+ Software without specific prior written permission from Apple.  Except
+ as expressly stated in this notice, no other rights or licenses, express
+ or implied, are granted by Apple herein, including but not limited to
+ any patent rights that may be infringed by your derivative works or by
+ other works in which the Apple Software may be incorporated.
+ 
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+ 
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+ 
+ Copyright (C) 2009 Apple Inc. All Rights Reserved.
+ 
+ $Id: CDOpenALSupport.h 16 2010-03-11 06:22:10Z steveoldmeadow $
+ */
+
+#import "CDOpenALSupport.h"
+#import "CocosDenshion.h"
+#import <AudioToolbox/AudioToolbox.h>
+#import <AudioToolbox/ExtendedAudioFile.h>
+
+//Taken from oalTouch MyOpenALSupport 1.1
+void* CDloadWaveAudioData(CFURLRef inFileURL, ALsizei *outDataSize, ALenum *outDataFormat, ALsizei*     outSampleRate)
+{
+        OSStatus                                                err = noErr;    
+        UInt64                                                  fileDataSize = 0;
+        AudioStreamBasicDescription             theFileFormat;
+        UInt32                                                  thePropertySize = sizeof(theFileFormat);
+        AudioFileID                                             afid = 0;
+        void*                                                   theData = NULL;
+        
+        // Open a file with ExtAudioFileOpen()
+        err = AudioFileOpenURL(inFileURL, kAudioFileReadPermission, 0, &afid);
+        if(err) { CDLOG(@"MyGetOpenALAudioData: AudioFileOpenURL FAILED, Error = %ld\n", err); goto Exit; }
+        
+        // Get the audio data format
+        err = AudioFileGetProperty(afid, kAudioFilePropertyDataFormat, &thePropertySize, &theFileFormat);
+        if(err) { CDLOG(@"MyGetOpenALAudioData: AudioFileGetProperty(kAudioFileProperty_DataFormat) FAILED, Error = %ld\n", err); goto Exit; }
+        
+        if (theFileFormat.mChannelsPerFrame > 2)  { 
+                CDLOG(@"MyGetOpenALAudioData - Unsupported Format, channel count is greater than stereo\n"); goto Exit;
+        }
+        
+        if ((theFileFormat.mFormatID != kAudioFormatLinearPCM) || (!TestAudioFormatNativeEndian(theFileFormat))) { 
+                CDLOG(@"MyGetOpenALAudioData - Unsupported Format, must be little-endian PCM\n"); goto Exit;
+        }
+        
+        if ((theFileFormat.mBitsPerChannel != 8) && (theFileFormat.mBitsPerChannel != 16)) { 
+                CDLOG(@"MyGetOpenALAudioData - Unsupported Format, must be 8 or 16 bit PCM\n"); goto Exit;
+        }
+        
+        
+        thePropertySize = sizeof(fileDataSize);
+        err = AudioFileGetProperty(afid, kAudioFilePropertyAudioDataByteCount, &thePropertySize, &fileDataSize);
+        if(err) { CDLOG(@"MyGetOpenALAudioData: AudioFileGetProperty(kAudioFilePropertyAudioDataByteCount) FAILED, Error = %ld\n", err); goto Exit; }
+        
+        // Read all the data into memory
+        UInt32          dataSize = (UInt32)fileDataSize;
+        theData = malloc(dataSize);
+        if (theData)
+        {
+                AudioFileReadBytes(afid, false, 0, &dataSize, theData);
+                if(err == noErr)
+                {
+                        // success
+                        *outDataSize = (ALsizei)dataSize;
+                        //This fix was added by me, however, 8 bit sounds have a clipping sound at the end so aren't really usable (SO)
+                        if (theFileFormat.mBitsPerChannel == 16) { 
+                                *outDataFormat = (theFileFormat.mChannelsPerFrame > 1) ? AL_FORMAT_STEREO16 : AL_FORMAT_MONO16;
+                        } else {
+                                *outDataFormat = (theFileFormat.mChannelsPerFrame > 1) ? AL_FORMAT_STEREO8 : AL_FORMAT_MONO8;   
+                        }       
+                        *outSampleRate = (ALsizei)theFileFormat.mSampleRate;
+                }
+                else 
+                { 
+                        // failure
+                        free (theData);
+                        theData = NULL; // make sure to return NULL
+                        CDLOG(@"MyGetOpenALAudioData: ExtAudioFileRead FAILED, Error = %ld\n", err); goto Exit;
+                }       
+        }
+        
+Exit:
+        // Dispose the ExtAudioFileRef, it is no longer needed
+        if (afid) AudioFileClose(afid);
+        return theData;
+}
+
+//Taken from oalTouch MyOpenALSupport 1.4
+void* CDloadCafAudioData(CFURLRef inFileURL, ALsizei *outDataSize, ALenum *outDataFormat, ALsizei* outSampleRate)
+{
+        OSStatus                                                status = noErr;
+        BOOL                                                    abort = NO;
+        SInt64                                                  theFileLengthInFrames = 0;
+        AudioStreamBasicDescription             theFileFormat;
+        UInt32                                                  thePropertySize = sizeof(theFileFormat);
+        ExtAudioFileRef                                 extRef = NULL;
+        void*                                                   theData = NULL;
+        AudioStreamBasicDescription             theOutputFormat;
+        UInt32                                                  dataSize = 0;
+        
+        // Open a file with ExtAudioFileOpen()
+        status = ExtAudioFileOpenURL(inFileURL, &extRef);
+        if (status != noErr)
+        {
+                CDLOG(@"MyGetOpenALAudioData: ExtAudioFileOpenURL FAILED, Error = %ld\n", status);
+                abort = YES;
+        }
+        if (abort)
+                goto Exit;
+        
+        // Get the audio data format
+        status = ExtAudioFileGetProperty(extRef, kExtAudioFileProperty_FileDataFormat, &thePropertySize, &theFileFormat);
+        if (status != noErr)
+        {
+                CDLOG(@"MyGetOpenALAudioData: ExtAudioFileGetProperty(kExtAudioFileProperty_FileDataFormat) FAILED, Error = %ld\n", status);
+                abort = YES;
+        }
+        if (abort)
+                goto Exit;
+        
+        if (theFileFormat.mChannelsPerFrame > 2)
+        {
+                CDLOG(@"MyGetOpenALAudioData - Unsupported Format, channel count is greater than stereo\n");
+                abort = YES;
+        }
+        if (abort)
+                goto Exit;
+        
+        // Set the client format to 16 bit signed integer (native-endian) data
+        // Maintain the channel count and sample rate of the original source format
+        theOutputFormat.mSampleRate = theFileFormat.mSampleRate;
+        theOutputFormat.mChannelsPerFrame = theFileFormat.mChannelsPerFrame;
+        
+        theOutputFormat.mFormatID = kAudioFormatLinearPCM;
+        theOutputFormat.mBytesPerPacket = 2 * theOutputFormat.mChannelsPerFrame;
+        theOutputFormat.mFramesPerPacket = 1;
+        theOutputFormat.mBytesPerFrame = 2 * theOutputFormat.mChannelsPerFrame;
+        theOutputFormat.mBitsPerChannel = 16;
+        theOutputFormat.mFormatFlags = kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked | kAudioFormatFlagIsSignedInteger;
+        
+        // Set the desired client (output) data format
+        status = ExtAudioFileSetProperty(extRef, kExtAudioFileProperty_ClientDataFormat, sizeof(theOutputFormat), &theOutputFormat);
+        if (status != noErr)
+        {
+                CDLOG(@"MyGetOpenALAudioData: ExtAudioFileSetProperty(kExtAudioFileProperty_ClientDataFormat) FAILED, Error = %ld\n", status);
+                abort = YES;
+        }
+        if (abort)
+                goto Exit;
+        
+        // Get the total frame count
+        thePropertySize = sizeof(theFileLengthInFrames);
+        status = ExtAudioFileGetProperty(extRef, kExtAudioFileProperty_FileLengthFrames, &thePropertySize, &theFileLengthInFrames);
+        if (status != noErr)
+        {
+                CDLOG(@"MyGetOpenALAudioData: ExtAudioFileGetProperty(kExtAudioFileProperty_FileLengthFrames) FAILED, Error = %ld\n", status);
+                abort = YES;
+        }
+        if (abort)
+                goto Exit;
+        
+        // Read all the data into memory
+        dataSize = (UInt32) theFileLengthInFrames * theOutputFormat.mBytesPerFrame;
+        theData = malloc(dataSize);
+        if (theData)
+        {
+                AudioBufferList         theDataBuffer;
+                theDataBuffer.mNumberBuffers = 1;
+                theDataBuffer.mBuffers[0].mDataByteSize = dataSize;
+                theDataBuffer.mBuffers[0].mNumberChannels = theOutputFormat.mChannelsPerFrame;
+                theDataBuffer.mBuffers[0].mData = theData;
+                
+                // Read the data into an AudioBufferList
+                status = ExtAudioFileRead(extRef, (UInt32*)&theFileLengthInFrames, &theDataBuffer);
+                if(status == noErr)
+                {
+                        // success
+                        *outDataSize = (ALsizei)dataSize;
+                        *outDataFormat = (theOutputFormat.mChannelsPerFrame > 1) ? AL_FORMAT_STEREO16 : AL_FORMAT_MONO16;
+                        *outSampleRate = (ALsizei)theOutputFormat.mSampleRate;
+                }
+                else
+                {
+                        // failure
+                        free (theData);
+                        theData = NULL; // make sure to return NULL
+                        CDLOG(@"MyGetOpenALAudioData: ExtAudioFileRead FAILED, Error = %ld\n", status);
+                        abort = YES;
+                }
+        }
+        if (abort)
+                goto Exit;
+        
+Exit:
+        // Dispose the ExtAudioFileRef, it is no longer needed
+        if (extRef) ExtAudioFileDispose(extRef);
+        return theData;
+}
+
+void* CDGetOpenALAudioData(CFURLRef inFileURL, ALsizei *outDataSize, ALenum *outDataFormat, ALsizei*    outSampleRate) {
+        
+        CFStringRef extension = CFURLCopyPathExtension(inFileURL);
+        CFComparisonResult isWavFile = 0;
+        if (extension != NULL) {
+                isWavFile = CFStringCompare (extension,(CFStringRef)@"wav", kCFCompareCaseInsensitive);
+                CFRelease(extension);
+        }       
+        
+        if (isWavFile == kCFCompareEqualTo) {
+                return CDloadWaveAudioData(inFileURL, outDataSize, outDataFormat, outSampleRate);       
+        } else {
+                return CDloadCafAudioData(inFileURL, outDataSize, outDataFormat, outSampleRate);                
+        }
+}
+