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/*=============================================================================
	afconvert.cpp
	
=============================================================================*/

/*
	afconvert
	
	command-line tool to convert an audio file to another format
*/

#include "afconvert.h"
#include <stdio.h>
#include <vector>
#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
	#include <CoreServices/CoreServices.h>
	#include <AudioToolbox/AudioToolbox.h>
#else
	#include <CoreServices.h>
	#include <AudioToolbox.h>
#endif
#include "CAChannelLayouts.h"

#include "CAAudioFileConverter.h"
#include "CAXException.h"
#include "CAAudioFileFormats.h"
#include "AFToolsCommon.h"
#if !TARGET_OS_MAC
	#include <QTML.h>
	#include "CAWindows.h"
#endif


void AFConvertTool::usage()
{
	fprintf(stderr,
			"Usage:\n"
			"%s [option...] input_file [output_file]\n\n"
			"Options: (may appear before or after arguments)\n"
			"    { -f | --file } file_format:\n",
#if !TARGET_OS_WIN32
			getprogname());
#else
			"afconvert");
#endif
	PrintAudioFileTypesAndFormats(stderr);
	fprintf(stderr,
			"    { -d | --data } data_format[@sample_rate_hz][/format_flags][#frames_per_packet] :\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"
			"        format_flags: hex digits, e.g. '80'\n"
			"        bitdepth on non-PCM formats can be specified, e.g.: alac-24\n"
			"        Frames per packet can be specified for some encoders, e.g.: samr#12\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 } codec_quality\n"
			"        codec_quality: 0-127\n"
			"    { -r | --src-quality } src_quality\n"
			"        src_quality (sample rate converter quality): 0-127\n"
			"    { -v | --verbose }\n"
			"        print progress verbosely\n"
			"    { -s | --strategy } strategy\n"
			"        bitrate strategy for encoded file\n"
			"        0 for CBR, 1 for ABR, 2 for VBR\n"
			"    { -t | --tag }\n"
			"        If encoding to CAF, store the source file's format and name in a user chunk.\n"
			"        If decoding from CAF, use the destination format and filename found in a user chunk.\n"
			"    --prime-method method\n"
			"        decode priming method (see AudioConverter.h)\n"
			);
	ExtraUsageOptions();
	exit(1);
}

void	Warning(const char *s, OSStatus error)
{
	char buf[256];
	fprintf(stderr, "*** warning: %s (%s)\n", s, CAXException::FormatError(buf, sizeof(buf), error));
}

OSType AFConvertTool::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;
}


int		AFConvertTool::main(int argc, const char * argv[])
{
	Init();
	
	CAAudioFileConverter::ConversionParameters &params = *mParams;
	bool gotOutDataFormat = false;
	
	CAXException::SetWarningHandler(Warning);
	
	if (argc < 2)
		usage();
	
	params.flags = CAAudioFileConverter::kOpt_OverwriteOutputFile;
	
	for (int i = 1; i < argc; ++i) {
		const char *arg = argv[i];
		if (arg[0] != '-') {
			if (params.input.filePath == NULL) params.input.filePath = arg;
			else if (params.output.filePath == NULL) params.output.filePath = arg;
			else usage();
		} else {
			arg += 1;
			if (arg[0] == 'f' || !strcmp(arg, "-file")) {
				if (++i == argc) MissingArgument();
				params.output.fileType = Parse4CharCode(argv[i], "-f | --file");
			} else if (arg[0] == 'd' || !strcmp(arg, "-data")) {
				if (++i == argc) MissingArgument();
				if (!ParseStreamDescription(argv[i], params.output.dataFormat))
					usage();
				gotOutDataFormat = true;
			} else if (arg[0] == 'b' || !strcmp(arg, "-bitrate")) {
				if (++i == argc) MissingArgument();
				params.output.bitRate = ParseInt(argv[i], "-b | --bitrate");
			} else if (arg[0] == 'q' || !strcmp(arg, "-quality")) {
				if (++i == argc) MissingArgument();
				params.output.codecQuality = ParseInt(argv[i], "-q | --quality");
			} else if (arg[0] == 'r' || !strcmp(arg, "-src-quality")) {
				if (++i == argc) MissingArgument();
				params.output.srcQuality = ParseInt(argv[i], "-r | --src-quality");
			} else if (arg[0] == 'l' || !strcmp(arg, "-channellayout")) {
				if (++i == argc) MissingArgument();
				UInt32 tag = CAChannelLayouts::StringToConstant(argv[i]);
				if (tag == CAChannelLayouts::kInvalidTag) {
					fprintf(stderr, "unknown channel layout tag: %s\n\n", argv[i]);
					usage();
				}
				if (params.output.channelLayoutTag == 0)
					params.output.channelLayoutTag = tag;
				else if (params.input.channelLayoutTag == 0) {
					params.input.channelLayoutTag = params.output.channelLayoutTag;
					params.output.channelLayoutTag = tag;
				} else {
					fprintf(stderr, "too many channel layout tags!\n\n");
					usage();
				}
			} else if (arg[0] == 'c' || !strcmp(arg, "-channels")) {
				if (++i == argc) MissingArgument();
				params.output.channels = ParseInt(argv[i], "-c | --channels");
			} else if (arg[0] == 'v' || !strcmp(arg, "-verbose")) {
				params.flags |= CAAudioFileConverter::kOpt_Verbose;
			} else if (arg[0] == 's' || !strcmp(arg, "-strategy")) {
				if (++i == argc) MissingArgument();
				params.output.strategy = ParseInt(argv[i], "-s | --strategy");
			} else if (arg[0] == 't' || !strcmp(arg, "-tag")) {
				params.flags |= CAAudioFileConverter::kOpt_CAFTag;
			} else if (!strcmp(arg, "-prime-method")) {
				if (++i == argc) MissingArgument();
				params.output.primeMethod = ParseInt(argv[i], "-p | --prime-method");
			} else if (!ParseOtherOption(argv, i)) {
				fprintf(stderr, "unknown argument: %s\n\n", arg - 1);
				usage();
			}
		}
	}
	if (params.input.filePath == NULL) {
		fprintf(stderr, "no input file specified\n\n");
		usage();
	}
	
	if (!(params.flags & CAAudioFileConverter::kOpt_CAFTag)) {
		if (!gotOutDataFormat) {
			if (params.output.fileType == 0) {
				fprintf(stderr, "no output file or data format specified\n\n");
				usage();
			}
			if (!CAAudioFileFormats::Instance()->InferDataFormatFromFileFormat(params.output.fileType, params.output.dataFormat)) {
				fprintf(stderr, "Couldn't infer data format from file format\n\n");
				usage();
			}
		} else if (params.output.fileType == 0) {
			CAAudioFileFormats *formats = CAAudioFileFormats::Instance();
			if (!formats->InferFileFormatFromFilename(params.output.filePath, params.output.fileType) && !formats->InferFileFormatFromDataFormat(params.output.dataFormat, params.output.fileType)) {
				params.output.dataFormat.PrintFormat(stderr, "", "Couldn't infer file format from data format");
				usage();
			}
		}
	}

	try {
		mAFConverter->ConvertFile(params);
		Success();
	}
	catch (CAXException &e) {
		char buf[256];
		fprintf(stderr, "Error: %s (%s)\n", e.mOperation, e.FormatError(buf, sizeof(buf)));
		return 1;
	}
	catch (...) {
		fprintf(stderr, "An unknown error occurred\n");
		return 1;
	}

	return 0;
}