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*/
/*=============================================================================
	main.cpp
	
=============================================================================*/

/*
	auprocess
		- takes a source audio file, an AU and generates a processed file 
*/

#include "CAAUProcessor.h"
#include "CAAudioFile.h"
#include "CAXException.h"
#include "CAHostTimeBase.h"
#include "CAFilePathUtils.h"
#include "CAAudioFileFormats.h"

#if TARGET_OS_MAC
	#include <pthread.h>
	#include <mach/mach.h>
#endif

#define require_noerr ca_require_noerr

#define CA_AU_PROFILE_TIME 1

#if CA_AU_PROFILE_TIME
			UInt64 sReadTime = 0;
			UInt64 sRenderTime = 0;
#endif

#pragma mark __print helpers

void PRINT_MARKS ()
{
	printf ("| ");
	for (int i = 0; i < 48; ++i)
		printf (" ");
	printf ("|\n");
}

void PerfResult(const char *toolname, int group, const char *testname, double value, const char *units, const char *fmt="%.3f")
{
	printf("<result tool='%s' group='%d' test='%s' value='", toolname, group, testname);
	printf(fmt, value);
	printf("' units='%s' />\n", units);
}

static int lastProgressPrintDone = -1;
void PRINT_PROGRESS (Float32 inPercent) 
{
	int current = int(inPercent / 4.0);
	for (int i = lastProgressPrintDone; i < current; ++i)
		printf ("* ");
	lastProgressPrintDone = current;
}

#pragma mark __Inpput Callback Definitions

static AURenderCallbackStruct sInputCallback; // we set one of these two callbacks based on AU type

static OSStatus InputCallback (void 			*inRefCon, 
					AudioUnitRenderActionFlags 	*ioActionFlags, 
					const AudioTimeStamp 		*inTimeStamp, 
					UInt32 						inBusNumber, 
					UInt32 						inNumberFrames, 
					AudioBufferList 			*ioData)
{
													#if CA_AU_PROFILE_TIME 
														UInt64 now = CAHostTimeBase::GetTheCurrentTime(); 
													#endif

	CAAudioFile &readFile = *(static_cast<CAAudioFile*>(inRefCon));

#if !CAAF_USE_EXTAUDIOFILE
	if (SInt64(inTimeStamp->mSampleTime) > readFile.GetNumberPackets()) {
#else
	if (SInt64(inTimeStamp->mSampleTime) > readFile.GetNumberFrames()) {
#endif
#if DEBUG
	printf ("reading past end of input\n");
#endif
		return -1;
	}

	readFile.Seek (SInt64(inTimeStamp->mSampleTime));
	readFile.Read (inNumberFrames, ioData);

													#if CA_AU_PROFILE_TIME 
														sReadTime += (CAHostTimeBase::GetTheCurrentTime() - now); 
													#endif

	return noErr;
}

static OSStatus FConvInputCallback (void 			*inRefCon, 
					AudioUnitRenderActionFlags 	*ioActionFlags, 
					const AudioTimeStamp 		*inTimeStamp, 
					UInt32 						inBusNumber, 
					UInt32 						inNumberFrames, 
					AudioBufferList 			*ioData)
{
												#if CA_AU_PROFILE_TIME 
													UInt64 now = CAHostTimeBase::GetTheCurrentTime(); 
												#endif

	CAAudioFile &readFile = *(static_cast<CAAudioFile*>(inRefCon));

		// this test is ONLY needed in case of processing with a Format Converter type of AU
		// in all other cases, the CAAUProcessor class will NEVER call you for input
		// beyond the end of the file....

#if !CAAF_USE_EXTAUDIOFILE
	if (SInt64(inTimeStamp->mSampleTime) >= readFile.GetNumberPackets()) {
#else
	if (SInt64(inTimeStamp->mSampleTime) >= readFile.GetNumberFrames()) {
#endif
		return -1;
	}
	
	readFile.Seek (SInt64(inTimeStamp->mSampleTime));
	UInt32 readPackets = inNumberFrames;
		
		// also, have to do this for a format converter AU - otherwise we'd just read what we're told
#if !CAAF_USE_EXTAUDIOFILE
	if (SInt64(inTimeStamp->mSampleTime + inNumberFrames) > readFile.GetNumberPackets()) {
#else
	if (SInt64(inTimeStamp->mSampleTime + inNumberFrames) > readFile.GetNumberFrames()) {
#endif
		// first set this to zero as we're only going to read a partial number of frames
		AudioBuffer *buf = ioData->mBuffers;
		for (UInt32 i = ioData->mNumberBuffers; i--; ++buf)
			memset((Byte *)buf->mData, 0, buf->mDataByteSize);
#if !CAAF_USE_EXTAUDIOFILE
		readPackets = UInt32 (readFile.GetNumberPackets() - SInt64(inTimeStamp->mSampleTime));
#else
		readPackets = UInt32 (readFile.GetNumberFrames() - SInt64(inTimeStamp->mSampleTime));
#endif
	}
	
	readFile.Read (readPackets, ioData);

													#if CA_AU_PROFILE_TIME 
														sReadTime += (CAHostTimeBase::GetTheCurrentTime() - now); 
													#endif

	return noErr;
}

struct ReadBuffer {
	AUOutputBL *readData;
	UInt32 readFrames;
};

static OSStatus MemoryInputCallback (void		*inRefCon, 
					AudioUnitRenderActionFlags 	*ioActionFlags, 
					const AudioTimeStamp 		*inTimeStamp, 
					UInt32 						inBusNumber, 
					UInt32 						inNumberFrames, 
					AudioBufferList 			*ioData)
{
													#if CA_AU_PROFILE_TIME 
														UInt64 now = CAHostTimeBase::GetTheCurrentTime(); 
													#endif

	ReadBuffer *readBuffer = (ReadBuffer*)inRefCon;
	
	if (((readBuffer->readFrames + inNumberFrames) * sizeof(Float32)) > (readBuffer->readData->ABL()->mBuffers[0].mDataByteSize)) 
	{
		// going past read size
		AudioBuffer *buf = ioData->mBuffers;
		for (UInt32 i = ioData->mNumberBuffers; i--; ++buf)
			memset((Byte *)buf->mData, 0, buf->mDataByteSize);
	}
	else
	{
		AudioBuffer *buf = ioData->mBuffers;
		AudioBuffer *rBuf = readBuffer->readData->ABL()->mBuffers;
		for (UInt32 i = ioData->mNumberBuffers; i--; ++buf, ++rBuf) {
			AudioBuffer readB = *rBuf;
			readB.mData = static_cast<Float32*>(rBuf->mData) + readBuffer->readFrames;
			memcpy (buf->mData, readB.mData, buf->mDataByteSize);
		}
		readBuffer->readFrames += inNumberFrames;
	}

													#if CA_AU_PROFILE_TIME 
														sReadTime += (CAHostTimeBase::GetTheCurrentTime() - now); 
													#endif

	return noErr;
}

#pragma mark __Utility Helpers

CFPropertyListRef	 ReadPresetFromPresetFile (char* filePath)
{	
	if (!filePath)
		return NULL;
	
	FSRef ref;
	if (FSPathMakeRef((UInt8 *)filePath, &ref, NULL))
		return NULL;
		
	CFDataRef			resourceData = NULL;
	CFPropertyListRef   theData = NULL;
	CFStringRef			errString = NULL;
	CFURLRef			fileURL = CFURLCreateFromFSRef (kCFAllocatorDefault, &ref);
		if (fileURL == NULL) {
			goto home;
		}
		
	SInt32				result;
    
   // Read the XML file.
   Boolean status; status = CFURLCreateDataAndPropertiesFromResource (kCFAllocatorDefault, fileURL,
                                                                &resourceData,	// place to put file data
                                                                NULL, NULL, &result);
        if (status == false || result) {
            goto home;
        }
    
	theData = CFPropertyListCreateFromXMLData (kCFAllocatorDefault, resourceData,  
													kCFPropertyListImmutable, &errString);
        if (theData == NULL || errString) {
            if (theData)
				CFRelease (theData);
			theData = NULL;
			goto home;
       }
	
home:
	if (fileURL)
		CFRelease (fileURL);
	if (resourceData)
		CFRelease (resourceData);
    if (errString)
		CFRelease (errString);
		
	return theData;
}

#pragma mark __the setup code

#define OFFLINE_AU_CMD 		"[-au TYPE SUBTYPE MANU] The Audio Unit component description\n\t"
#define INPUT_FILE	 		"[-i /Path/To/File] The file that is to be processed.\n\t"
#define OUTPUT_FILE			"[-o /Path/To/File/To/Create] This will be in the same format as the input file\n\t"
#define AU_PRESET_CMD		"[-p /Path/To/AUPreset/File] Specify an AU Preset File to establish the state of the AU\n\t"
#define SHORT_MEM_CMD		"[-m] Just reads and processes the first half second of the input file\n\t"
#define USE_MAX_FRAMES		"[-f max_frames] default is 32768 (512 for aufc units)"
 
static char* usageStr = "Usage: auprocess\n\t" 
				OFFLINE_AU_CMD 
				INPUT_FILE
				OUTPUT_FILE
				AU_PRESET_CMD
				SHORT_MEM_CMD
				USE_MAX_FRAMES;

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, sizeof(buf)));
		exit(1);
	}
	catch (...) {
		printf("An unknown error occurred\n");
		exit(1);
	}
			
	return 0;
}