main.c

wince下著名的视频播放器源码

		show_version();
		return 0;
	}
	else if(option_values.show_explain) {
		show_explain();
		return 0;
	}
	else if(option_values.show_help) {
		show_help();
		return 0;
	}
	else {
		if(option_values.num_files == 0) {
			if(flac__utils_verbosity_ >= 1)
				short_usage();
			return 0;
		}

		/*
		 * tweak options; validate the values
		 */
		if(!option_values.mode_decode) {
			if(option_values.blocksize < 0) {
				if(option_values.max_lpc_order == 0)
					option_values.blocksize = 1152;
				else
					option_values.blocksize = 4608;
			}
			if(option_values.max_residual_partition_order < 0) {
				if(option_values.blocksize <= 1152)
					option_values.max_residual_partition_order = 2;
				else if(option_values.blocksize <= 2304)
					option_values.max_residual_partition_order = 3;
				else if(option_values.blocksize <= 4608)
					option_values.max_residual_partition_order = 3;
				else
					option_values.max_residual_partition_order = 4;
				option_values.min_residual_partition_order = option_values.max_residual_partition_order;
			}
			if(option_values.rice_parameter_search_dist < 0) {
				option_values.rice_parameter_search_dist = 0;
			}
			if(0 != option_values.cue_specification)
				return usage_error("ERROR: --cue is not allowed in test mode\n");
		}
		else {
			if(option_values.test_only) {
				if(0 != option_values.skip_specification)
					return usage_error("ERROR: --skip is not allowed in test mode\n");
				if(0 != option_values.until_specification)
					return usage_error("ERROR: --until is not allowed in test mode\n");
				if(0 != option_values.cue_specification)
					return usage_error("ERROR: --cue is not allowed in test mode\n");
			}
		}

		if(0 != option_values.cue_specification && (0 != option_values.skip_specification || 0 != option_values.until_specification))
			return usage_error("ERROR: --cue may not be combined with --skip or --until\n");

		FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);

		if(option_values.format_channels >= 0) {
			if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
				return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
		}
		if(option_values.format_bps >= 0) {
			if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
				return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
		}
		if(option_values.format_sample_rate >= 0) {
			if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
				return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
		}
		if(option_values.force_raw_format && option_values.force_aiff_format)
			return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
		if(option_values.mode_decode) {
			if(!option_values.force_raw_format) {
				if(option_values.format_is_big_endian >= 0)
					return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
				if(option_values.format_is_unsigned_samples >= 0)
					return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
			}
			if(option_values.format_channels >= 0)
				return usage_error("ERROR: --channels not allowed with --decode\n");
			if(option_values.format_bps >= 0)
				return usage_error("ERROR: --bps not allowed with --decode\n");
			if(option_values.format_sample_rate >= 0)
				return usage_error("ERROR: --sample-rate not allowed with --decode\n");
		}
		if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
			return usage_error("ERROR: invalid blocksize '%u', must be >= %u and <= %u\n", (unsigned)option_values.blocksize, FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE);
		}
		if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
			return usage_error("ERROR: invalid value '%u' for qlp coeff precision, must be 0 or >= %u\n", option_values.qlp_coeff_precision, FLAC__MIN_QLP_COEFF_PRECISION);
		}

		if(option_values.sector_align) {
			if(option_values.mode_decode)
				return usage_error("ERROR: --sector-align only allowed for encoding\n");
			if(0 != option_values.skip_specification)
				return usage_error("ERROR: --sector-align not allowed with --skip\n");
			if(0 != option_values.until_specification)
				return usage_error("ERROR: --sector-align not allowed with --until\n");
			if(0 != option_values.cue_specification)
				return usage_error("ERROR: --sector-align not allowed with --cue\n");
			if(option_values.format_channels >= 0 && option_values.format_channels != 2)
				return usage_error("ERROR: --sector-align can only be done with stereo input\n");
			if(option_values.format_bps >= 0 && option_values.format_bps != 16)
				return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
			if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
				return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
		}
		if(option_values.replay_gain) {
			if(option_values.force_to_stdout)
				return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
			if(option_values.mode_decode)
				return usage_error("ERROR: --replay-gain only allowed for encoding\n");
			if(option_values.format_channels > 2)
				return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
			if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
				return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
			/*
			 * We want to reserve padding space for the ReplayGain
			 * tags that we will set later, to avoid rewriting the
			 * whole file.
			 */
			if(option_values.padding < 0) {
				flac__utils_printf(stderr, 1, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
				option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
			}
			else {
				option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
			}
		}
		if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
			return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
		}
		if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
			return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
		}
		if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
			return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
		}
	}

	flac__utils_printf(stderr, 2, "\n");
	flac__utils_printf(stderr, 2, "flac %s, Copyright (C) 2000,2001,2002,2003,2004,2005  Josh Coalson\n", FLAC__VERSION_STRING);
	flac__utils_printf(stderr, 2, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
	flac__utils_printf(stderr, 2, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");

	if(!option_values.mode_decode) {
		char padopt[16];
		if(option_values.padding < 0)
			strcpy(padopt, "-");
		else
			sprintf(padopt, " %d", option_values.padding);
		flac__utils_printf(stderr, 2,
			"options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
			option_values.delete_input?" --delete-input-file":"",
			option_values.sector_align?" --sector-align":"",
			option_values.use_ogg?" --ogg":"",
			option_values.lax?" --lax":"",
			padopt,
			(unsigned)option_values.blocksize,
			option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
			option_values.max_lpc_order,
			option_values.do_exhaustive_model_search?" -e":"",
			option_values.do_escape_coding?" -E":"",
			option_values.do_qlp_coeff_prec_search?" -p":"",
			option_values.qlp_coeff_precision,
			(unsigned)option_values.min_residual_partition_order,
			(unsigned)option_values.max_residual_partition_order,
			option_values.verify? " -V":""
		);
	}

	if(option_values.mode_decode) {
		FLAC__bool first = true;

		if(option_values.num_files == 0) {
			retval = decode_file("-");
		}
		else {
			unsigned i;
			if(option_values.num_files > 1)
				option_values.cmdline_forced_outfilename = 0;
			for(i = 0, retval = 0; i < option_values.num_files; i++) {
				if(0 == strcmp(option_values.filenames[i], "-") && !first)
					continue;
				retval |= decode_file(option_values.filenames[i]);
				first = false;
			}
		}
	}
	else { /* encode */
		FLAC__bool first = true;

		if(option_values.num_files == 0) {
			retval = encode_file("-", first, true);
		}
		else {
			unsigned i;
			if(option_values.num_files > 1)
				option_values.cmdline_forced_outfilename = 0;
			for(i = 0, retval = 0; i < option_values.num_files; i++) {
				if(0 == strcmp(option_values.filenames[i], "-") && !first)
					continue;
				retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
				first = false;
			}
			if(option_values.replay_gain && retval == 0) {
				float album_gain, album_peak;
				grabbag__replaygain_get_album(&album_gain, &album_peak);
				for(i = 0; i < option_values.num_files; i++) {
					const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
					if(0 == outfilename) {
						flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", option_values.filenames[i]);
						return 1;
					}
					if(0 == strcmp(option_values.filenames[i], "-")) {
						FLAC__ASSERT(0);
						/* double protection */
						flac__utils_printf(stderr, 1, "internal error\n");
						return 2;
					}
					if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
						flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain album tags\n", outfilename);
						retval = 1;
					}
				}
			}
		}
	}

	return retval;
}

FLAC__bool init_options()
{
	option_values.show_help = false;
	option_values.show_explain = false;
	option_values.mode_decode = false;
	option_values.verify = false;
	option_values.force_file_overwrite = false;
	option_values.continue_through_decode_errors = false;
	option_values.replaygain_synthesis_spec.apply = false;
	option_values.replaygain_synthesis_spec.use_album_gain = true;
	option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
	option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
	option_values.replaygain_synthesis_spec.preamp = 0.0;
	option_values.lax = false;
	option_values.test_only = false;
	option_values.analyze = false;
	option_values.use_ogg = false;
	option_values.has_serial_number = false;
	option_values.serial_number = 0;
	option_values.do_mid_side = true;
	option_values.loose_mid_side = false;
	option_values.do_exhaustive_model_search = false;
	option_values.do_escape_coding = false;
	option_values.do_qlp_coeff_prec_search = false;
	option_values.force_to_stdout = false;
	option_values.force_aiff_format = false;
	option_values.force_raw_format = false;
	option_values.delete_input = false;
	option_values.replay_gain = false;
	option_values.sector_align = false;
	option_values.cmdline_forced_outfilename = 0;
	option_values.output_prefix = 0;
	option_values.aopts.do_residual_text = false;
	option_values.aopts.do_residual_gnuplot = false;
	option_values.padding = 4096;
	option_values.max_lpc_order = 8;
	option_values.qlp_coeff_precision = 0;
	option_values.skip_specification = 0;
	option_values.until_specification = 0;
	option_values.cue_specification = 0;
	option_values.format_is_big_endian = -1;
	option_values.format_is_unsigned_samples = -1;
	option_values.format_channels = -1;
	option_values.format_bps = -1;
	option_values.format_sample_rate = -1;
	option_values.format_input_size = -1;
	option_values.blocksize = -1;
	option_values.min_residual_partition_order = -1;
	option_values.max_residual_partition_order = -1;
	option_values.rice_parameter_search_dist = -1;
	option_values.requested_seek_points[0] = '\0';
	option_values.num_requested_seek_points = -1;
	option_values.cuesheet_filename = 0;
	option_values.cued_seekpoints = true;

	option_values.num_files = 0;
	option_values.filenames = 0;

	if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))