Initial commit — M3U playlist tool with MP3/AAC encoding
This commit is contained in:
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using System.Text;
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namespace m3uTool
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{
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/// <summary>
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/// LAME 32bits version 3.97 (beta 1, Oct 16 2005) (http://www.mp3dev.org/)
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///
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/// usage: lame [options] <infile> [outfile]
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///
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/// <infile> and/or <outfile> can be "-", which means stdin/stdout.
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///
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/// RECOMMENDED:
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/// lame -V2 input.wav output.mp3
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///
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/// OPTIONS:
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/// Input options:
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/// -r input is raw pcm
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/// -x force byte-swapping of input
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/// -s sfreq sampling frequency of input file (kHz) - default 44.1 kHz
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/// --bitwidth w input bit width is w (default 16)
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/// --scale <arg> scale input (multiply PCM data) by <arg>
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/// --scale-l <arg> scale channel 0 (left) input (multiply PCM data) by <arg>
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/// --scale-r <arg> scale channel 1 (right) input (multiply PCM data) by <arg>
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/// --mp1input input file is a MPEG Layer I file
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/// --mp2input input file is a MPEG Layer II file
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/// --mp3input input file is a MPEG Layer III file
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/// --nogap <file1> <file2> <...>
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/// gapless encoding for a set of contiguous files
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/// --nogapout <dir>
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/// output dir for gapless encoding (must precede --nogap)
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/// --nogaptags allow the use of VBR tags in gapless encoding
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///
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/// Operational options:
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/// -a downmix from stereo to mono file for mono encoding
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/// -m <mode> (j)oint, (s)imple, (f)orce, (d)dual-mono, (m)ono
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/// default is (j) or (s) depending on bitrate
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/// joint = joins the best possible of MS and LR stereo
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/// simple = force LR stereo on all frames
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/// force = force MS stereo on all frames.
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/// --preset type type must be "medium", "standard", "extreme", "insane",
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/// or a value for an average desired bitrate and depending
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/// on the value specified, appropriate quality settings will
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/// be used.
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/// "--preset help" gives more info on these
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/// --comp <arg> choose bitrate to achive a compression ratio of <arg>
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/// --replaygain-fast compute RG fast but slightly inaccurately (default)
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/// --replaygain-accurate compute RG more accurately and find the peak sample
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/// --noreplaygain disable ReplayGain analysis
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/// --clipdetect enable --replaygain-accurate and print a message whether
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/// clipping occurs and how far the waveform is from full scale
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/// --freeformat produce a free format bitstream
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/// --decode input=mp3 file, output=wav
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/// -t disable writing wav header when using --decode
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///
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///
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/// Verbosity:
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/// --disptime <arg>print progress report every arg seconds
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/// -S don't print progress report, VBR histograms
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/// --nohist disable VBR histogram display
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/// --silent don't print anything on screen
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/// --quiet don't print anything on screen
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/// --brief print more useful information
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/// --verbose print a lot of useful information
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///
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/// Noise shaping & psycho acoustic algorithms:
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/// -q <arg> <arg> = 0...9. Default -q 5
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/// -q 0: Highest quality, very slow
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/// -q 9: Poor quality, but fast
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/// -h Same as -q 2. Recommended.
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/// -f Same as -q 7. Fast, ok quality
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///
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///
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/// CBR (constant bitrate, the default) options:
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/// -b <bitrate> set the bitrate in kbps, default 128 kbps
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/// --cbr enforce use of constant bitrate
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///
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/// ABR options:
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/// --abr <bitrate> specify average bitrate desired (instead of quality)
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///
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/// VBR options:
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/// -v use variable bitrate (VBR) (--vbr-old)
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/// --vbr-old use old variable bitrate (VBR) routine
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/// --vbr-new use new variable bitrate (VBR) routine
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/// -V n quality setting for VBR. default n=4
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/// 0=high quality,bigger files. 9=smaller files
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/// -b <bitrate> specify minimum allowed bitrate, default 32 kbps
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/// -B <bitrate> specify maximum allowed bitrate, default 320 kbps
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/// -F strictly enforce the -b option, for use with players that
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/// do not support low bitrate mp3
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/// -t disable writing LAME Tag
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/// -T enable and force writing LAME Tag
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///
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///
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/// PSY related:
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/// --short use short blocks when appropriate
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/// --noshort do not use short blocks
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/// --allshort use only short blocks
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/// --notemp disable temporal masking effect
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/// --nssafejoint M/S switching criterion
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/// --nsmsfix <arg> M/S switching tuning [effective 0-3.5]
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/// --interch x adjust inter-channel masking ratio
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/// --ns-bass x adjust masking for sfbs 0 - 6 (long) 0 - 5 (short)
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/// --ns-alto x adjust masking for sfbs 7 - 13 (long) 6 - 10 (short)
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/// --ns-treble x adjust masking for sfbs 14 - 21 (long) 11 - 12 (short)
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/// --ns-sfb21 x change ns-treble by x dB for sfb21
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///
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///
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/// experimental switches:
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/// -X n[,m] selects between different noise measurements
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/// n for long block, m for short. if m is omitted, m = n
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/// -Y lets LAME ignore noise in sfb21, like in CBR
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/// -Z [n] currently no effects
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///
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///
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/// MP3 header/stream options:
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/// -e <emp> de-emphasis n/5/c (obsolete)
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/// -c mark as copyright
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/// -o mark as non-original
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/// -p error protection. adds 16 bit checksum to every frame
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/// (the checksum is computed correctly)
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/// --nores disable the bit reservoir
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/// --strictly-enforce-ISO comply as much as possible to ISO MPEG spec
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///
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/// Filter options:
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/// -k keep ALL frequencies (disables all filters),
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/// Can cause ringing and twinkling
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/// --lowpass <freq> frequency(kHz), lowpass filter cutoff above freq
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/// --lowpass-width <freq> frequency(kHz) - default 15% of lowpass freq
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/// --highpass <freq> frequency(kHz), highpass filter cutoff below freq
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/// --highpass-width <freq> frequency(kHz) - default 15% of highpass freq
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/// --resample <sfreq> sampling frequency of output file(kHz)- default=automatic
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///
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///
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/// ID3 tag options:
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/// --tt <title> audio/song title (max 30 chars for version 1 tag)
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/// --ta <artist> audio/song artist (max 30 chars for version 1 tag)
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/// --tl <album> audio/song album (max 30 chars for version 1 tag)
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/// --ty <year> audio/song year of issue (1 to 9999)
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/// --tc <comment> user-defined text (max 30 chars for v1 tag, 28 for v1.1)
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/// --tn <track> audio/song track number (1 to 255, creates v1.1 tag)
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/// --tg <genre> audio/song genre (name or number in list)
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/// --add-id3v2 force addition of version 2 tag
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/// --id3v1-only add only a version 1 tag
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/// --id3v2-only add only a version 2 tag
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/// --space-id3v1 pad version 1 tag with spaces instead of nulls
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/// --pad-id3v2 pad version 2 tag with extra 128 bytes
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/// --genre-list print alphabetically sorted ID3 genre list and exit
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/// --ignore-tag-errors ignore errors in values passed for tags
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///
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/// Note: A version 2 tag will NOT be added unless one of the input fields
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/// won't fit in a version 1 tag (e.g. the title string is longer than 30
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/// characters), or the '--add-id3v2' or '--id3v2-only' options are used,
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/// or output is redirected to stdout.
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///
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///
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/// MS-Windows-specific options:
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/// --priority <type> sets the process priority:
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/// 0,1 = Low priority (IDLE_PRIORITY_CLASS)
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/// 2 = normal priority (NORMAL_PRIORITY_CLASS, defau
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/// lt)
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/// 3,4 = High priority (HIGH_PRIORITY_CLASS))
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/// Note: Calling '--priority' without a parameter will select priority 0.
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///
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///
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/// Platform specific:
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/// --noasm <instructions> disable assembly optimizations for mmx/3dnow/sse
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///
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///
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///
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/// MPEG-1 layer III sample frequencies (kHz): 32 48 44.1
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/// bitrates (kbps): 32 40 48 56 64 80 96 112 128 160 192 224 256 320
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///
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/// MPEG-2 layer III sample frequencies (kHz): 16 24 22.05
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/// bitrates (kbps): 8 16 24 32 40 48 56 64 80 96 112 128 144 160
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///
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/// MPEG-2.5 layer III sample frequencies (kHz): 8 12 11.025
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/// bitrates (kbps): 8 16 24 32 40 48 56 64 80 96 112 128 144 160
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///</summary>
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public class Mp3EncodingOptions : ProcessArguments
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{
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#region Private variables
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/// <summary>
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/// Set the bitrate in kbps, default 128 kbps -b <bitrate>
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/// </summary>
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private BitRate mBitRate = BitRate.KBPS_0;
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/// <summary>
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/// (j)oint, (s)imple, (f)orce, (d)dual-mono, (m)ono (-m)
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/// </summary>
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private ChannelMode mChannelMode = ChannelMode.JointStereo;
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/// <summary>
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/// input=mp3 file, output=wav (--decode)
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/// </summary>
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private bool mDecodeWav;
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/// <summary>
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/// disable writing wav header when using --decode (-t)
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/// </summary>
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private bool mDisableWavHeader;
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/// <summary>
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/// force byte-swapping of input (-x)
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/// </summary>
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private bool mForceByteSwappingOfInput;
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/// <summary>
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/// produce a free format bitstream (--freeformat)
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/// </summary>
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private bool mFreeFormat;
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/// <summary>
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/// Input filename. Can be "-", which means stdin.
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/// </summary>
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private string mInfile;
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/// <summary>
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/// downmix from stereo to mono file for mono encoding (-a)
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/// </summary>
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private bool mMonoDownmixing;
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/// <summary>
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/// input file is a MPEG Layer III file (--mp3input)
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/// </summary>
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private bool mMp3Input;
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/// <summary>
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/// Output filename. Can be "-", which means stdout.
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/// </summary>
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private string mOutfile;
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/// <summary>
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/// input is raw pcm (-r)
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/// </summary>
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private bool mRawPCMInputMode;
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/// <summary>
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/// input bit width is w (default 16) (--bitwidth w)
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/// </summary>
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private int mRawPCMInputSampleRate = 16;
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/// <summary>
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/// sampling frequency of input file (kHz) - default 44.1 kHz (-s sfreq)
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/// </summary>
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private SampleRateFrequency mRawPCMInputSampleSize = SampleRateFrequency.Hz_44100;
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#endregion
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#region Public properties
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/// <summary>
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/// Input filename. Can be "-", which means stdin.
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/// </summary>
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public string Infile
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{
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get { return mInfile; }
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set { mInfile = value; }
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}
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/// <summary>
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/// Output filename. Can be "-", which means stdout.
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/// </summary>
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public string Outfile
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{
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get { return mOutfile; }
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set { mOutfile = value; }
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}
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/// <summary>
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/// input is raw pcm (-r)
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/// </summary>
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public bool RawPCMInputMode
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{
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get { return mRawPCMInputMode; }
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set { mRawPCMInputMode = value; }
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}
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/// <summary>
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/// force byte-swapping of input (-x)
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/// </summary>
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public bool ForceByteSwappingOfInput
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{
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get { return mForceByteSwappingOfInput; }
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set
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{
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mForceByteSwappingOfInput = value;
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mRawPCMInputMode = true;
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}
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}
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/// <summary>
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/// sampling frequency of input file (kHz) - default 44.1 kHz (-s sfreq)
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/// </summary>
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public SampleRateFrequency RawPCMInputSampleSize
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{
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get { return mRawPCMInputSampleSize; }
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set
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{
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mRawPCMInputSampleSize = value;
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mRawPCMInputMode = true;
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}
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}
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/// <summary>
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/// input bit width is w (default 16) (--bitwidth w)
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/// </summary>
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public int RawPCMInputSampleRate
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{
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get { return mRawPCMInputSampleRate; }
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set
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{
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mRawPCMInputSampleRate = value;
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mRawPCMInputMode = true;
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}
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}
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/// <summary>
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/// input file is a MPEG Layer III file (--mp3input)
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/// </summary>
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public bool Mp3Input
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{
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get { return mMp3Input; }
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set
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{
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mMp3Input = value;
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if (mMp3Input)
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mRawPCMInputMode = false;
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}
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}
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/// <summary>
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/// downmix from stereo to mono file for mono encoding (-a)
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/// </summary>
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public bool MonoDownmixing
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{
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get { return mMonoDownmixing; }
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set { mMonoDownmixing = value; }
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}
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/// <summary>
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/// (j)oint, (s)imple, (f)orce, (d)dual-mono, (m)ono (-m)
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/// </summary>
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public ChannelMode ChannelMode
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{
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get { return mChannelMode; }
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set { mChannelMode = value; }
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}
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/// <summary>
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/// produce a free format bitstream (--freeformat)
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/// </summary>
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public bool Freeformat
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{
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get { return mFreeFormat; }
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set { mFreeFormat = value; }
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}
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/// <summary>
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/// input=mp3 file, output=wav (--decode)
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/// </summary>
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public bool DecodeWav
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{
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get { return mDecodeWav; }
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set { mDecodeWav = value; }
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}
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/// <summary>
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/// disable writing wav header when using --decode (-t)
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/// </summary>
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public bool DisableWavHeader
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{
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get { return mDisableWavHeader; }
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set
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{
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mDisableWavHeader = value;
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if (mDisableWavHeader)
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DecodeWav = true;
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}
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}
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public BitRate BitRate
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{
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get { return mBitRate; }
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set { mBitRate = value; }
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}
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#endregion
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/// <summary>
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/// Gets a string representing the command line arguments specified by the properties in the object.
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/// </summary>
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/// <returns></returns>
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public override string GetCommandLineArguments()
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{
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var stringBuilder = new StringBuilder();
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if (mRawPCMInputMode)
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{
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stringBuilder.Append(" -r");
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if (mForceByteSwappingOfInput)
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stringBuilder.Append(" -x");
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if (mRawPCMInputSampleSize != SampleRateFrequency.Hz_44100)
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stringBuilder.Append(" -s " +
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SampleRateFrequencyUtility.GetSampleRateFrequencyInt(mRawPCMInputSampleSize));
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if (mRawPCMInputSampleRate != 16)
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stringBuilder.Append(" --bandwidth " + mRawPCMInputSampleRate);
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}
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if (mMp3Input)
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stringBuilder.Append(" --mp3input");
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if (mMonoDownmixing)
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stringBuilder.Append(" -a");
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if (mChannelMode != ChannelMode.JointStereo)
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stringBuilder.Append(" -m " + ChannelModeUtility.GetChannelModeChar(mChannelMode));
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if (mFreeFormat)
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{
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stringBuilder.Append(" --freeformat");
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stringBuilder.Append(" -b " + BitRateFrequencyUtility.GetBitRateInt(BitRate));
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}
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if (mDecodeWav)
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{
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stringBuilder.Append(" --decode");
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if (mDisableWavHeader)
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stringBuilder.Append(" -t");
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}
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if (!string.IsNullOrEmpty(mInfile))
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stringBuilder.Append(" " + GetQuotedCommandLineArgument(mInfile));
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if (!string.IsNullOrEmpty(mOutfile))
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stringBuilder.Append(" " + (mOutfile));
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return stringBuilder.ToString();
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}
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}
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}
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