Esempio n. 1
0
int main(int argc, const char * argv[])
{
#if TARGET_OS_MAC
	{
		thread_extended_policy_data_t		theFixedPolicy;
		theFixedPolicy.timeshare = false;	// set to true for a non-fixed thread
		thread_policy_set(pthread_mach_thread_np(pthread_self()), 
													THREAD_EXTENDED_POLICY, 
													(thread_policy_t)&theFixedPolicy, 
													THREAD_EXTENDED_POLICY_COUNT);

		// We keep a reference to the spawning thread's priority around (initialized in the constructor), 
		// and set the importance of the child thread relative to the spawning thread's priority.
		thread_precedence_policy_data_t		thePrecedencePolicy;
		
		thePrecedencePolicy.importance = 63 - 36;
		thread_policy_set(pthread_mach_thread_np(pthread_self()), 
													THREAD_PRECEDENCE_POLICY, 
													(thread_policy_t)&thePrecedencePolicy, 
													THREAD_PRECEDENCE_POLICY_COUNT);
	}
#endif


// These are the variables that are set up from the input parsing
	char* srcFilePath = NULL;
	char* auPresetFile = NULL;
	OSType manu, subType, type = 0;
	UInt32 numFrames = 4096;
	
	for (int i = 1; i < argc; ++i)
	{
		if (strcmp (argv[i], "-au") == 0) {
            if ( (i + 3) < argc ) {                
                StrToOSType (argv[i + 1], type);
                StrToOSType (argv[i + 2], subType);
                StrToOSType (argv[i + 3], manu);
				i += 3;
			} else {
				printf ("Which Audio Unit:\n%s", usageStr);
				exit(1);
			}
		}
		else if (strcmp (argv[i], "-i") == 0) {
			srcFilePath = const_cast<char*>(argv[++i]);
		}
		else if (strcmp (argv[i], "-p") == 0) {
			auPresetFile = const_cast<char*>(argv[++i]);
		}
		else if (strcmp (argv[i], "-f") == 0) {
			sscanf(argv[++i], "%ld", &numFrames);
		}
		else {
			printf ("%s\n", usageStr);
			exit(1);
		}
	}
	
	if (!type || !srcFilePath) {
		printf ("%s\n", usageStr);
		exit(1);
	}
	
	CAComponentDescription desc(type, subType, manu);
	
	CFPropertyListRef presetDict = ReadPresetFromPresetFile(auPresetFile);
	
#pragma mark -
#pragma mark __ The driving code
#pragma mark -

	try 
	{
		CAComponent comp(desc);
			
			 // CAAUProcessor's constructor throws... so make sure the component is valid
		if (comp.IsValid() == false) {
			printf ("Can't Find Component\n");
			desc.Print();
			exit(1);
		}
			
		CAAUProcessor processor(comp);
										processor.AU().Comp().Print();
		
		CAAudioFile srcFile;
		
		srcFile.Open(srcFilePath);


		UInt64 numInputSamples = srcFile.GetNumberFrames();

		Float64 inputSecs = (numInputSamples / srcFile.GetFileDataFormat().mSampleRate);
		
		CAStreamBasicDescription procFormat (srcFile.GetFileDataFormat());
		procFormat.SetCanonical (srcFile.GetFileDataFormat().NumberChannels(), false);

										printf ("Processing file: %s, %.1f secs [proc: %ld frames]\n", srcFilePath, inputSecs, numFrames);
										#if VERBOSE
											printf("\t");
											procFormat.Print();
										#endif
		
		srcFile.SetClientFormat (procFormat);
		
		AUOutputBL outputList(procFormat);
	
		// read the entire file into memory
		ReadBuffer* readBuf = new ReadBuffer;
		readBuf->readData = new AUOutputBL(procFormat);
		readBuf->totalInputFrames = numInputSamples;
		readBuf->readData->Allocate (numInputSamples);
		readBuf->readData->Prepare();
		UInt32 readSamps = (UInt32)numInputSamples;
		srcFile.Read (readSamps, readBuf->readData->ABL());
			
		AURenderCallbackStruct inputCallback;
		inputCallback.inputProc = MemoryInputCallback;
		inputCallback.inputProcRefCon = readBuf;
				
		OSStatus result;
		require_noerr (result = processor.EstablishInputCallback (inputCallback), home);
		require_noerr (result = processor.SetMaxFramesPerRender (numFrames), home); 
		require_noerr (result = processor.Initialize (procFormat, numInputSamples), home);
		if (presetDict) {
			require_noerr (result = processor.SetAUPreset (presetDict), home);
			CFRelease (presetDict);
		}
			// this does ALL of the preflighting.. could be specialise for an OfflineAU type
			// to do this piecemeal and do a progress bar by using the OfflineAUPreflight method
		readBuf->lastInputFrames = 0;
		require_noerr (result = processor.Preflight (), home);
	
	float mean;
	
	// now do the processing....
	{
		const int kThrasherSize = 4000000;
		char* thrasher = new char[kThrasherSize];
		
		bool isDone = false;
		
		UInt32 numMeasures = 0;
		Float64 totalMSqrd = 0;
		Float64 totalM = 0;
		
		int i = 0;
		int discardResults = 3;
						
			// this is the render loop
		while (!isDone) 
		{
			bool isSilence, postProcess;

			outputList.Prepare(); // have to do this every time...
			readBuf->lastInputFrames = 0;
			sLastReadTime = 0;
			memset (thrasher, numMeasures, kThrasherSize);

												UInt64 now = CAHostTimeBase::GetTheCurrentTime(); 
			require_noerr (result = processor.Render (outputList.ABL(), numFrames, isSilence, &isDone, &postProcess), home);
												UInt64 renderTime = (CAHostTimeBase::GetTheCurrentTime() - now);
			
			if (i++ < discardResults) continue;
			if (!readBuf->lastInputFrames) break;

			Float64 renderTimeSecs = CAHostTimeBase::ConvertToNanos (renderTime - sLastReadTime) / 1.0e9;
			
			Float64 cpuTime = (renderTimeSecs / (readBuf->lastInputFrames / procFormat.mSampleRate)) * 100.;
			numMeasures++;
			
			totalMSqrd += (cpuTime * cpuTime);
			totalM += cpuTime;

			if (cpuTime > sMaxTime)
				sMaxTime = cpuTime;
			if (cpuTime < sMinTime)
				sMinTime = cpuTime;
									
#if VERBOSE
//			printf ("current measure: %.2f\n", cpuTime);
			if (numMeasures % 5 == 0) {
				Float64 mean = totalM / numMeasures;				
					//	stdDev = (sum of Xsquared -((sum of X)*(sum of X)/N)) / (N-1))
				Float64 stdDev = sqrt ((totalMSqrd - ((totalM * totalM) / numMeasures)) / (numMeasures-1.0));
				printf ("ave: %.2f, min: %.2f, max: %.2f, stdev: %.2f, numMeasures: %ld, current: %f\n", 
					mean, sMinTime, sMaxTime, stdDev, numMeasures, cpuTime);
			}
#endif
		}
		delete [] thrasher;
		
		mean = totalM / numMeasures;
			//	stdDev = (sum of Xsquared -((sum of X)*(sum of X)/N)) / (N-1))
		Float64 stdDev = sqrt ((totalMSqrd - ((totalM * totalM) / numMeasures)) / (numMeasures-1.0));

		printf ("ave: %.2f, min: %.2f, max: %.2f, sd: %.2f, sd / mean: %.2f%%\n", 
			mean, sMinTime, sMaxTime, stdDev, (stdDev / mean * 100.));
	}

		// we don't care about post-processing

home:
		if (result) {
			printf ("Exit with bad result:%ld\n", result);
			exit(result);
		}
		
		if (readBuf) {
			delete readBuf->readData;
			delete readBuf;
		}
		

		CFStringRef str = comp.GetCompName();
		UInt32 compNameLen = CFStringGetLength (str);
		
		CFStringRef presetName = NULL;
		if (auPresetFile) {
			CFPropertyListRef dict;
			if (processor.AU().GetAUPreset (dict) == noErr) {
				presetName = (CFStringRef)CFDictionaryGetValue((CFDictionaryRef)dict, CFSTR("name"));
				CFRelease (dict);
			}
		}

		UInt32 presetLen = presetName ? CFStringGetLength(presetName) : 0;
		
		UInt32 groupID = comp.Desc().componentSubType;
		
		char* cstr = (char*)malloc (compNameLen + presetLen + 2 + 1);
		CFStringGetCString (str, cstr, (CFStringGetLength (str) + 1), kCFStringEncodingASCII);
		if (presetName) {
			cstr[compNameLen] = ':';
			cstr[compNameLen+1] = ':';
			CFStringGetCString (presetName, cstr + compNameLen + 2, (CFStringGetLength (presetName) + 1), kCFStringEncodingASCII);
			int len = strlen(cstr);
			for (int i = 0; i < len; ++i)
				groupID += cstr[i];
		}
		PerfResult("AU Profile", EndianU32_NtoB(groupID), cstr, mean, "%realtime");
		free (cstr);

	}
	catch (CAXException &e) {
		char buf[256];
		printf("Error: %s (%s)\n", e.mOperation, e.FormatError(buf));
		exit(1);
	}
	catch (...) {
		printf("An unknown error occurred\n");
		exit(1);
	}
			
	return 0;
}
Esempio n. 2
0
void	CAAudioFileConverter::ConvertFile(const ConversionParameters &_params)
{
	FSRef destFSRef;
	UInt32 propertySize;
	CAStreamBasicDescription destFormat;
	CAAudioChannelLayout origSrcFileLayout, srcFileLayout, destFileLayout;
	bool openedSourceFile = false, createdOutputFile = false;
	
	mParams = _params;
	mReadBuffer = NULL;
	mReadPtrs = NULL;
	CABufferList *writeBuffer = NULL;
	CABufferList *writePtrs = NULL;
	
	PrepareConversion();

	try {
		if (TaggedDecodingFromCAF())
			ReadCAFInfo();
		OpenInputFile();
		openedSourceFile = true;
		
		// get input file's format
		const CAStreamBasicDescription &srcFormat = mSrcFile.GetFileDataFormat();
		if (mParams.flags & kOpt_Verbose) {
			printf("Input file: %s, %qd frames\n", mParams.input.filePath ? basename(mParams.input.filePath) : "?", 
				mSrcFile.GetNumberFrames());
		}
		mSrcFormat = srcFormat;
		
		bool encoding = !destFormat.IsPCM();
		bool decoding = !srcFormat.IsPCM();
		
		// prepare output file's format
		destFormat = mParams.output.dataFormat;

		if (!encoding && destFormat.mSampleRate == 0.)
			// on encode, it's OK to have a 0 sample rate; ExtAudioFile will get the SR from the converter and set it on the file.
			// on decode or PCM->PCM, a sample rate of 0 is interpreted as using the source sample rate
			destFormat.mSampleRate = srcFormat.mSampleRate;
		
		// source channel layout
		srcFileLayout = mSrcFile.GetFileChannelLayout();
		origSrcFileLayout = srcFileLayout;
		if (mParams.input.channelLayoutTag != 0) {
			XThrowIf(AudioChannelLayoutTag_GetNumberOfChannels(mParams.input.channelLayoutTag)
				!= srcFormat.mChannelsPerFrame, -1, "input channel layout has wrong number of channels for file");
			srcFileLayout = CAAudioChannelLayout(mParams.input.channelLayoutTag);
			mSrcFile.SetFileChannelLayout(srcFileLayout);
		}
		
		// destination channel layout
		int outChannels = mParams.output.channels;
		if (mParams.output.channelLayoutTag != 0) {
			// use the one specified by caller, if any
			destFileLayout = CAAudioChannelLayout(mParams.output.channelLayoutTag);
		} else if (srcFileLayout.IsValid()) {
			// otherwise, assume the same as the source, if any
			destFileLayout = srcFileLayout;
		}
		if (destFileLayout.IsValid()) {
			// the output channel layout specifies the number of output channels
			if (outChannels != -1)
				XThrowIf((unsigned)outChannels != destFileLayout.NumberChannels(), -1,
					"output channel layout has wrong number of channels");
			else
				outChannels = destFileLayout.NumberChannels();
		}

		if (!(mParams.flags & kOpt_NoSanitizeOutputFormat)) {
			// adjust the output format's channels; output.channels overrides the channels
			if (outChannels == -1)
				outChannels = srcFormat.mChannelsPerFrame;
			if (outChannels > 0) {
				destFormat.mChannelsPerFrame = outChannels;
				destFormat.mBytesPerPacket *= outChannels;
				destFormat.mBytesPerFrame *= outChannels;
			}
		
			// use AudioFormat API to clean up the output format
			propertySize = sizeof(AudioStreamBasicDescription);
			XThrowIfError(AudioFormatGetProperty(kAudioFormatProperty_FormatInfo, 0, NULL, &propertySize, &destFormat),
					"get destination format info");
		}
		OpenOutputFile(srcFormat, destFormat, destFSRef, destFileLayout);
		createdOutputFile = true;
		mDestFormat = destFormat;
		
		// set up client formats
		CAStreamBasicDescription srcClientFormat, destClientFormat;
		{
			CAAudioChannelLayout srcClientLayout, destClientLayout;
			
			if (encoding) {
				if (decoding) {
					// transcoding
//					XThrowIf(encoding && decoding, -1, "transcoding not currently supported");
					
					if (srcFormat.mChannelsPerFrame > 2 || destFormat.mChannelsPerFrame > 2)
						CAXException::Warning("Transcoding multichannel audio may not handle channel layouts correctly", 0);
					srcClientFormat.SetCanonical(std::min(srcFormat.mChannelsPerFrame, destFormat.mChannelsPerFrame), true);
					srcClientFormat.mSampleRate = std::max(srcFormat.mSampleRate, destFormat.mSampleRate);
					mSrcFile.SetClientFormat(srcClientFormat, NULL);
					
					destClientFormat = srcClientFormat;
				} else {
					// encoding
					srcClientFormat = srcFormat;
					destClientFormat = srcFormat;
				}
				// by here, destClientFormat will have a valid sample rate
				destClientLayout = srcFileLayout.IsValid() ? srcFileLayout : destFileLayout;

				mDestFile.SetClientFormat(destClientFormat, &destClientLayout);
			} else {
				// decoding or PCM->PCM
				if (destFormat.mSampleRate == 0.)
					destFormat.mSampleRate = srcFormat.mSampleRate;
		
				destClientFormat = destFormat;
				srcClientFormat = destFormat;
				srcClientLayout = destFileLayout;
				
				mSrcFile.SetClientFormat(srcClientFormat, &srcClientLayout);
			}
		}
		
		XThrowIf(srcClientFormat.mBytesPerPacket == 0, -1, "source client format not PCM"); 
		XThrowIf(destClientFormat.mBytesPerPacket == 0, -1, "dest client format not PCM"); 		
		if (encoding) {
			// set the bitrate
			if (mParams.output.bitRate != -1) {
				if (mParams.flags & kOpt_Verbose)
					printf("bitrate = %ld\n", mParams.output.bitRate);
				mDestFile.SetConverterProperty(kAudioConverterEncodeBitRate, sizeof(UInt32), &mParams.output.bitRate);
			}

			// set the codec quality
			if (mParams.output.codecQuality != -1) {
				if (mParams.flags & kOpt_Verbose)
					printf("codec quality = %ld\n", mParams.output.codecQuality);
				mDestFile.SetConverterProperty(kAudioConverterCodecQuality, sizeof(UInt32), &mParams.output.codecQuality);
			}

			// set the bitrate strategy -- called bitrate format in the codecs since it had already shipped
			if (mParams.output.strategy != -1) {
				if (mParams.flags & kOpt_Verbose)
					printf("strategy = %ld\n", mParams.output.strategy);
				mDestFile.SetConverterProperty(kAudioCodecBitRateFormat, sizeof(UInt32), &mParams.output.strategy);
			}
		}
		// set the SRC quality
		if (mParams.output.srcQuality != -1) {
			if (srcFormat.mSampleRate != 0. && destFormat.mSampleRate != 0. && srcFormat.mSampleRate != destFormat.mSampleRate) {
				if (mParams.flags & kOpt_Verbose)
					printf("SRC quality = %ld\n", mParams.output.srcQuality);
				if (encoding)
					mDestFile.SetConverterProperty(kAudioConverterSampleRateConverterQuality, sizeof(UInt32), &mParams.output.srcQuality);
				else
					mSrcFile.SetConverterProperty(kAudioConverterSampleRateConverterQuality, sizeof(UInt32), &mParams.output.srcQuality);
			}
		}
		if (decoding) {
			if (mParams.output.primeMethod != -1)
				mSrcFile.SetConverterProperty(kAudioConverterPrimeMethod, sizeof(UInt32), &mParams.output.primeMethod);
		}

		PrintFormats(&origSrcFileLayout);

		// prepare I/O buffers
		UInt32 bytesToRead = 0x10000;
		UInt32 framesToRead = bytesToRead;	// OK, ReadPackets will limit as appropriate
		ComputeReadSize(srcFormat, destFormat, bytesToRead, framesToRead);

//		const SInt64 totalFrames = mSrcFile.GetNumberFrames();
//#warning "GetNumberFrames() can be prohibitively slow for some formats"
		
		mReadBuffer = CABufferList::New("readbuf", srcClientFormat);
		mReadBuffer->AllocateBuffers(bytesToRead);
		mReadPtrs = CABufferList::New("readptrs", srcClientFormat);
		
		BeginConversion();
		
		while (true) {
			//XThrowIf(Progress(mSrcFile.Tell(), totalFrames), userCanceledErr, "user stopped");
				// this was commented out for awhile -- performance? make it optional?
			UInt32 nFrames = framesToRead;
			mReadPtrs->SetFrom(mReadBuffer);
			AudioBufferList *readbuf = &mReadPtrs->GetModifiableBufferList();
			
			mSrcFile.Read(nFrames, readbuf);
			//printf("read %ld of %ld frames\n", nFrames, framesToRead);
			if (nFrames == 0)
				break;

			mDestFile.Write(nFrames, readbuf);
			if (ShouldTerminateConversion())
				break;
		}
		
		if (decoding) {
			// fix up the destination file's length if necessary and possible
			SInt64 nframes = mSrcFile.GetNumberFrames();
			if (nframes != 0) {
				// only shorten, don't try to lengthen
				nframes = SInt64(ceil(nframes * destFormat.mSampleRate / srcFormat.mSampleRate));
				if (nframes < mDestFile.GetNumberFrames()) {
					mDestFile.SetNumberFrames(nframes);
				}
			}
		}
		EndConversion();
	}
	catch (...) {
		delete mReadBuffer;
		delete mReadPtrs;
		delete writeBuffer;
		delete writePtrs;
		if (!createdOutputFile)
			PrintFormats(&origSrcFileLayout);
		try { mSrcFile.Close(); } catch (...) { }
		try { mDestFile.Close(); } catch (...) { }
		if (createdOutputFile)
			unlink(mOutName);
		throw;
	}
	delete mReadBuffer;
	delete mReadPtrs;
	delete writeBuffer;
	delete writePtrs;
	mSrcFile.Close();
	mDestFile.Close();
	if (TaggedEncodingToCAF())
		WriteCAFInfo();
	
	if (mParams.flags & kOpt_Verbose) {
		// must close to flush encoder; GetNumberFrames() not necessarily valid until afterwards but then
		// the file is closed
		CAAudioFile temp;
		FSRef destFSRef;
		if (FSPathMakeRef((UInt8 *)mOutName, &destFSRef, NULL) == noErr) {
			temp.Open(destFSRef);
			printf("Output file: %s, %qd frames\n", basename(mOutName), temp.GetNumberFrames());
		}
	}
}
Esempio n. 3
0
int main(int argc, const char * argv[])
{
	setbuf (stdout, NULL);


#if TARGET_OS_MAC
	{
		thread_extended_policy_data_t		theFixedPolicy;
		theFixedPolicy.timeshare = false;	// set to true for a non-fixed thread
		thread_policy_set(pthread_mach_thread_np(pthread_self()), 
													THREAD_EXTENDED_POLICY, 
													(thread_policy_t)&theFixedPolicy, 
													THREAD_EXTENDED_POLICY_COUNT);

		// We keep a reference to the spawning thread's priority around (initialized in the constructor), 
		// and set the importance of the child thread relative to the spawning thread's priority.
		thread_precedence_policy_data_t		thePrecedencePolicy;
		
		thePrecedencePolicy.importance = 63 - 36;
		thread_policy_set(pthread_mach_thread_np(pthread_self()), 
													THREAD_PRECEDENCE_POLICY, 
													(thread_policy_t)&thePrecedencePolicy, 
													THREAD_PRECEDENCE_POLICY_COUNT);
	}
#endif


// These are the variables that are set up from the input parsing
	char* srcFilePath = NULL;
	char* destFilePath = NULL;
	char* auPresetFile = NULL;
	bool shortMemoryProfile = false;
	OSType manu, subType, type = 0;
	int userSetFrames = -1;
	
	for (int i = 1; i < argc; ++i)
	{
		if (strcmp (argv[i], "-au") == 0) {
            if ( (i + 3) < argc ) {                
                StrToOSType (argv[i + 1], type);
                StrToOSType (argv[i + 2], subType);
                StrToOSType (argv[i + 3], manu);
				i += 3;
			} else {
				printf ("Which Audio Unit:\n%s", usageStr);
				exit(1);
			}
		}
		else if (strcmp (argv[i], "-i") == 0) {
			srcFilePath = const_cast<char*>(argv[++i]);
		}
		else if (strcmp (argv[i], "-o") == 0) {
			destFilePath = const_cast<char*>(argv[++i]);
		}
		else if (strcmp (argv[i], "-p") == 0) {
			auPresetFile = const_cast<char*>(argv[++i]);
		}
		else if (strcmp (argv[i], "-m") == 0) {
			shortMemoryProfile = true;
		}
		else if (strcmp (argv[i], "-f") == 0) {
			sscanf(argv[++i], "%d", &userSetFrames);
		}
		else {
			printf ("%s\n", usageStr);
			exit(1);
		}
	}
	
	if (!type || !srcFilePath) {
		printf ("%s\n", usageStr);
		exit(1);
	}
	if (!destFilePath) {
		if (!shortMemoryProfile) {
			printf ("%s\n", usageStr);
			exit(1);
		}
	}
			// delete pre-existing output file
	if (!shortMemoryProfile) {
		FSRef destFSRef;
		if (FSPathMakeRef((UInt8 *)destFilePath, &destFSRef, NULL) == noErr) {
			// output file exists - delete it
			if (FSDeleteObject(&destFSRef)) {
				printf ("Cannot Delete Output File\n");
				exit(1);
			}
		}
	}
	
	CAComponentDescription desc(type, subType, manu);
	
	CFPropertyListRef presetDict = ReadPresetFromPresetFile(auPresetFile);
	
		// the num of frames to use when processing the file with the Render call
	UInt32 maxFramesToUse = shortMemoryProfile ? 512 : 32768;

		// not set from command line
	if (userSetFrames > 0) {
		maxFramesToUse = userSetFrames; 
	}
		
		// in some settings (for instance a delay with 100% feedback) tail time is essentially infinite
		// so you should safeguard the final OL render stage (post process) which is aimed at pulling the tail through
		// if you want to bypass this completely, just set this to zero.
	Float64 maxTailTimeSecs = 10.;
	
#pragma mark -
#pragma mark __ The driving code
#pragma mark -

	try 
	{
		CAComponent comp(desc);
			
			 // CAAUProcessor's constructor throws... so make sure the component is valid
		if (comp.IsValid() == false) {
			printf ("Can't Find Component\n");
			desc.Print();
			exit(1);
		}
			
		CAAUProcessor processor(comp);
													processor.AU().Print();
		
		CAAudioFile srcFile;
		CAAudioFile destFile; 
		
		srcFile.Open(srcFilePath);

		CAStreamBasicDescription procFormat (srcFile.GetFileDataFormat());
		procFormat.SetCanonical (srcFile.GetFileDataFormat().NumberChannels(), false);

													printf ("Processing Format:\n\t");
													procFormat.Print();
		
		
		if (!shortMemoryProfile) {
			FSRef parentDir;
			CFStringRef filename;
			PosixPathToParentFSRefAndName(destFilePath, parentDir, filename);
			destFile.CreateNew (parentDir, filename, 'AIFF', srcFile.GetFileDataFormat());
			destFile.SetClientFormat (procFormat);
		}
	
		srcFile.SetClientFormat (procFormat);
		
		AUOutputBL outputList(procFormat);

		ReadBuffer* readBuf = NULL;	

#if !CAAF_USE_EXTAUDIOFILE
		UInt64 numInputSamples = srcFile.GetNumberPackets();
#else
		UInt64 numInputSamples = srcFile.GetNumberFrames();
#endif
	
		if (shortMemoryProfile) {
			readBuf = new ReadBuffer;
			readBuf->readData = new AUOutputBL(procFormat);
			readBuf->readFrames = 0;
			UInt32 numFrames = UInt32(procFormat.mSampleRate / 2);
			readBuf->readData->Allocate (numFrames); // half a second of audio data
			readBuf->readData->Prepare(); // half a second of audio data
				
				// read 1/2 second of audio into this read buffer
			srcFile.Read (numFrames, readBuf->readData->ABL());
			
			sInputCallback.inputProc = MemoryInputCallback;
			sInputCallback.inputProcRefCon = readBuf;
			numInputSamples = numFrames;
		}
		else {
			if (desc.IsFConv()) {
				maxFramesToUse = userSetFrames == -1 ? 512 : maxFramesToUse; 
				// some format converter's can call you several times in small granularities
				// so you can't use a large buffer to render or you won't return all of the input data
				// this also lessens the final difference between what you should get and what you do
				// converter units *really* should have a version that are offline AU's to 
				// handle this for you.
				sInputCallback.inputProc = FConvInputCallback;
			} else
				sInputCallback.inputProc = InputCallback;
			
			sInputCallback.inputProcRefCon = &srcFile;
		}
				
		OSStatus result;
		require_noerr (result = processor.EstablishInputCallback (sInputCallback), home);
		require_noerr (result = processor.SetMaxFramesPerRender (maxFramesToUse), home); 
		processor.SetMaxTailTime (maxTailTimeSecs);
		require_noerr (result = processor.Initialize (procFormat, numInputSamples), home);
		if (presetDict) {
			require_noerr (result = processor.SetAUPreset (presetDict), home);
			CFRelease (presetDict);
		}
			// this does ALL of the preflighting.. could be specialise for an OfflineAU type
			// to do this piecemeal and do a progress bar by using the OfflineAUPreflight method
		require_noerr (result = processor.Preflight (), home);
		
		bool isDone; isDone = false;
		bool needsPostProcessing;
		bool isSilence;
		UInt32 numFrames; numFrames = processor.MaxFramesPerRender();

#if CA_AU_PROFILE_TIME
		sReadTime = 0;
		sRenderTime = 0;
#endif
					
PRINT_MARKS();
			// this is the render loop
		while (!isDone) 
		{
											#if CA_AU_PROFILE_TIME 
												UInt64 now = CAHostTimeBase::GetTheCurrentTime(); 
											#endif
			outputList.Prepare(); // have to do this every time...
			require_noerr (result = processor.Render (outputList.ABL(), numFrames, isSilence, &isDone,
											&needsPostProcessing), home);
											#if CA_AU_PROFILE_TIME 
												sRenderTime += (CAHostTimeBase::GetTheCurrentTime() - now);
											#endif

if (!shortMemoryProfile)
	PRINT_PROGRESS(processor.GetOLPercentComplete());
else
	PRINT_PROGRESS(((processor.SampleTime() / numInputSamples) * 100.));
	
			if (numFrames && !shortMemoryProfile)
				destFile.Write (numFrames, outputList.ABL());
		}
			
			// this is the postprocessing if needed
		if (!shortMemoryProfile && needsPostProcessing) 
		{
			isDone = false;
			numFrames = processor.MaxFramesPerRender();
			while (!isDone) {
				outputList.Prepare(); // have to do this every time...
											#if CA_AU_PROFILE_TIME 
												UInt64 now = CAHostTimeBase::GetTheCurrentTime(); 
											#endif
				require_noerr (result = processor.PostProcess (outputList.ABL(), numFrames, 
													isSilence, isDone), home);
											#if CA_AU_PROFILE_TIME 
												sRenderTime += (CAHostTimeBase::GetTheCurrentTime() - now); 
											#endif

PRINT_PROGRESS(processor.GetOLPercentComplete());

				if (numFrames && !shortMemoryProfile)
					destFile.Write (numFrames, outputList.ABL());
			}
		}

printf ("\n");

home:
		if (result) {
			printf ("Exit with bad result:%ld\n", result);
			exit(result);
		}
		
		if (readBuf) {
			delete readBuf->readData;
			delete readBuf;
		}
					
#if CA_AU_PROFILE_TIME
	if (!shortMemoryProfile) {
			// this flushes any remaing data to be written to the disk. 
			// the source file is closed in its destructor of course
		destFile.Close(); 
			// open the file again, to get stats about it for profiling
		destFile.Open(destFilePath);
	}

	SInt64 numWritten;
	if (shortMemoryProfile)
		numWritten = 0;
	else {
#if !CAAF_USE_EXTAUDIOFILE
		numWritten = destFile.GetNumberPackets();
#else
		numWritten = destFile.GetNumberFrames();
#endif
	}

	printf ("Read File Time:%.2f secs for %lld packets (%.1f secs), wrote %lld packets\n", 
						(CAHostTimeBase::ConvertToNanos (sReadTime) / 1.0e9),
						numInputSamples,
						(numInputSamples / procFormat.mSampleRate),
						numWritten);

	if (!shortMemoryProfile) 
	{
#if !CAAF_USE_EXTAUDIOFILE
		UInt64 numOutputSamples = destFile.GetNumberPackets();
#else
		UInt64 numOutputSamples = destFile.GetNumberFrames();
#endif
	
		if (numOutputSamples == numInputSamples) {
			printf ("\tWrote the same number of packets as read\n");
		} else {
			bool expectationMet = !desc.IsOffline(); // we don't have any expectations for offline AU's
			if (processor.LatencySampleCount() || processor.TailSampleCount()) {
				if (numOutputSamples - numInputSamples == processor.TailSampleCount())
					expectationMet = true;
				if (expectationMet)	
					printf ("Correctly wrote \'Read Size + Tail\'. ");
				printf ("AU reports (samples): %ld latency, %ld tail\n", 
										processor.LatencySampleCount(), processor.TailSampleCount());
			}
			if (expectationMet == false) 
			{
				if (numOutputSamples > numInputSamples) {
					printf ("\tWrote %lld packets (%.2f secs) more than read\n", 
								(numOutputSamples - numInputSamples), 
								((numOutputSamples - numInputSamples) / procFormat.mSampleRate));
				} else {
					printf ("\tRead %lld packets (%.2f secs) more than wrote\n", 
								(numInputSamples - numOutputSamples), 
								((numInputSamples - numOutputSamples) / procFormat.mSampleRate));
				}
			}
		}
	}
	
	Float64 renderTimeSecs = CAHostTimeBase::ConvertToNanos (sRenderTime - sReadTime) / 1.0e9;
	printf ("Total Render Time:%.2f secs, using render slice size of %ld frames\n", 
							renderTimeSecs, maxFramesToUse);
	
	Float64 cpuUsage;
	if (shortMemoryProfile)
		cpuUsage = (renderTimeSecs / 0.5) * 100.;
	else
		cpuUsage = (renderTimeSecs / (numInputSamples / procFormat.mSampleRate)) * 100.;
	printf ("CPU Usage for Render Time:%.2f%%\n", cpuUsage);

	CFStringRef str = comp.GetCompName();
	UInt32 compNameLen = CFStringGetLength (str);
	
	CFStringRef presetName = NULL;
	if (auPresetFile) {
		CFPropertyListRef dict;
		if (processor.AU().GetAUPreset (dict) == noErr) {
			presetName = (CFStringRef)CFDictionaryGetValue((CFDictionaryRef)dict, CFSTR("name"));
			CFRelease (dict);
		}
	}

	UInt32 presetLen = presetName ? CFStringGetLength(presetName) : 0;

	char* cstr = (char*)malloc (compNameLen + presetLen + 2 + 1);
	CFStringGetCString (str, cstr, (CFStringGetLength (str) + 1), kCFStringEncodingASCII);
	if (presetName) {
		cstr[compNameLen] = ':';
		cstr[compNameLen+1] = ':';
		CFStringGetCString (presetName, cstr + compNameLen + 2, (CFStringGetLength (presetName) + 1), kCFStringEncodingASCII);
	}
	PerfResult("AudioUnitProcess", EndianU32_NtoB(comp.Desc().componentSubType), cstr, cpuUsage, "%realtime");
	free (cstr);
#endif


	}
	catch (CAXException &e) {
		char buf[256];
		printf("Error: %s (%s)\n", e.mOperation, e.FormatError(buf));
		exit(1);
	}
	catch (...) {
		printf("An unknown error occurred\n");
		exit(1);
	}
			
	return 0;
}