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/*=============================================================================
	afrecord.cpp
	
=============================================================================*/

#include "CAAudioFileRecorder.h"
#include "CAXException.h"
#include <unistd.h>
#include "AFToolsCommon.h"
#include "CAFilePathUtils.h"
#include "CAAudioFileFormats.h"

static void usage()
{
	fprintf(stderr,
			"Usage:\n"
			"%s [option...] audio_file\n\n"
			"Options: (may appear before or after arguments)\n"
			"    { -f | --file } file_format:\n"
			, getprogname());
	PrintAudioFileTypesAndFormats(stderr);
	fprintf(stderr,
			"    { -d | --data } data_format[@sample_rate_hz]:\n"
			"        [-][BE|LE]{F|[U]I}{8|16|24|32|64}          (PCM)\n"
			"            e.g. -BEI16 -F32@44100\n"
			"        or a data format appropriate to file format, as above\n"
			"    { -c | --channels } number_of_channels\n"
			"        add/remove channels without regard to order\n"
			"    { -l | --channellayout } layout_tag\n"
			"        layout_tag: name of a constant from CoreAudioTypes.h\n"
			"          (prefix \"kAudioChannelLayoutTag_\" may be omitted)\n"
			"        if specified once, applies to output file; if twice, the first\n"
			"          applies to the input file, the second to the output file\n"
			"    { -b | --bitrate } bit_rate_bps\n"
			"         e.g. 128000\n"
			"    { -q | --quality } quality\n"
			"        quality: 0-127\n"
			"    { -v | --verbose }\n"
			"        print progress verbosely\n"
			"    { -p | --profile }\n"
			"        collect and print performance profile\n"
			);
	exit(1);
}

static void	MissingArgument()
{
	fprintf(stderr, "missing argument\n\n");
	usage();
}

static OSType Parse4CharCode(const char *arg, const char *name)
{
	OSType t;
	StrToOSType(arg, t);
	if (t == 0) {
		fprintf(stderr, "invalid 4-char-code argument for %s: '%s'\n\n", name, arg);
		usage();
	}
	return t;
}

static int	ParseInt(const char *arg, const char *name)
{
	int x;
	if (sscanf(arg, "%d", &x) != 1) {
		fprintf(stderr, "invalid integer argument for %s: '%s'\n\n", name, arg);
		usage();
	}
	return x;
}

static void Record(CAAudioFileRecorder &recorder)
{
	recorder.Start();
	printf("Recording, press any key to stop:");
	fflush(stdout);
	getchar();
	//sleep(10);
	recorder.Stop();
}

int main(int argc, const char *argv[])
{
	const char *recordFileName = NULL;

	// set up defaults
	AudioFileTypeID filetype = kAudioFileAIFFType;
	
	bool gotOutDataFormat = false;
	CAStreamBasicDescription dataFormat;
	dataFormat.mSampleRate = 44100.;	// later get this from the hardware
	dataFormat.mFormatID = kAudioFormatLinearPCM;
	dataFormat.mFormatFlags = kAudioFormatFlagIsBigEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
	dataFormat.mFramesPerPacket = 1;
	dataFormat.mChannelsPerFrame = 2;
	dataFormat.mBitsPerChannel = 16;
	dataFormat.mBytesPerPacket = dataFormat.mBytesPerFrame = 4;
	
	SInt32 bitrate = -1, quality = -1;
	
	// parse arguments
	for (int i = 1; i < argc; ++i) {
		const char *arg = argv[i];
		if (arg[0] != '-') {
			if (recordFileName != NULL) {
				fprintf(stderr, "may only specify one record file\n");
				usage();
			}
			recordFileName = arg;
		} else {
			arg += 1;
			if (arg[0] == 'f' || !strcmp(arg, "-file")) {
				if (++i == argc) MissingArgument();
				filetype = Parse4CharCode(argv[i], "-f | --file");
			} else if (arg[0] == 'd' || !strcmp(arg, "-data")) {
				if (++i == argc) MissingArgument();
				if (!ParseStreamDescription(argv[i], dataFormat))
					usage();
				gotOutDataFormat = true;
			} else if (arg[0] == 'b' || !strcmp(arg, "-bitrate")) {
				if (++i == argc) MissingArgument();
				bitrate = ParseInt(argv[i], "-b | --bitrate");
			} else if (arg[0] == 'q' || !strcmp(arg, "-quality")) {
				if (++i == argc) MissingArgument();
				quality = ParseInt(argv[i], "-q | --quality");
			} else {
				fprintf(stderr, "unknown argument: %s\n\n", arg - 1);
				usage();
			}
		}
	}
	
	if (recordFileName == NULL)
		usage();
	
	if (!gotOutDataFormat) {
		if (filetype == 0) {
			fprintf(stderr, "no output file or data format specified\n\n");
			usage();
		}
		if (!CAAudioFileFormats::Instance()->InferDataFormatFromFileFormat(filetype, dataFormat)) {
			fprintf(stderr, "Couldn't infer data format from file format\n\n");
			usage();
		}
	} else if (filetype == 0) {
		if (!CAAudioFileFormats::Instance()->InferFileFormatFromDataFormat(dataFormat, filetype)) {
			dataFormat.PrintFormat(stderr, "", "Couldn't infer file format from data format");
			usage();
		}
	}

	unlink(recordFileName);
	
	if (dataFormat.IsPCM())
		dataFormat.ChangeNumberChannels(2, true);
	else
		dataFormat.mChannelsPerFrame = 2;
	
	try {
		const int kNumberBuffers = 3;
		const unsigned kBufferSize = 0x8000;
		CAAudioFileRecorder recorder(kNumberBuffers, kBufferSize);
		FSRef parentDir;
		CFStringRef filename;
		XThrowIfError(PosixPathToParentFSRefAndName(recordFileName, parentDir, filename), "couldn't find output directory");
		recorder.SetFile(parentDir, filename, filetype, dataFormat, NULL);
		
		CAAudioFile &recfile = recorder.GetFile();
		if (bitrate >= 0)
			recfile.SetConverterProperty(kAudioConverterEncodeBitRate, sizeof(UInt32), &bitrate);
		if (quality >= 0)
			recfile.SetConverterProperty(kAudioConverterCodecQuality, sizeof(UInt32), &quality);

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