public Mp3Decoder(string mp3File)
{
// encoder modules
lame = new Lame();
gaud = new GetAudio();
ga = new GainAnalysis();
bs = new BitStream();
p = new Presets();
qupvt = new QuantizePVT();
qu = new Quantize();
vbr = new VBRTag();
ver = new Mp3Version();
id3 = new ID3Tag();
rv = new Reservoir();
tak = new Takehiro();
parse = new Parse();
mpg = new MPGLib();
intf = new Interface();
common = new Mpg.Common();
lame.setModules(ga, bs, p, qupvt, qu, vbr, ver, id3, mpg);
bs.setModules(ga, mpg, ver, vbr);
id3.setModules(bs, ver);
p.Modules = lame;
qu.setModules(bs, rv, qupvt, tak);
qupvt.setModules(tak, rv, lame.enc.psy);
rv.Modules = bs;
tak.Modules = qupvt;
vbr.setModules(lame, bs, ver);
gaud.setModules(parse, mpg);
parse.setModules(ver, id3, p);
// decoder modules
mpg.setModules(intf, common);
intf.setModules(vbr, common);
gfp = lame.lame_init();
/*
* turn off automatic writing of ID3 tag data into mp3 stream we have to
* call it before 'lame_init_params', because that function would spit
* out ID3v2 tag data.
*/
gfp.write_id3tag_automatic = false;
/*
* Now that all the options are set, lame needs to analyze them and set
* some more internal options and check for problems
*/
lame.lame_init_params(gfp);
parse.input_format = GetAudio.sound_file_format.sf_mp3;
var inPath = new StringBuilder(mp3File);
var enc = new Enc();
gaud.init_infile(gfp, inPath.ToString(), enc);
var skip_start = 0;
var skip_end = 0;
if (parse.silent < 10)
{
Console.Write(
"\rinput: {0}{1}({2:g} kHz, {3:D} channel{4}, ",
inPath,
inPath.Length > 26 ? "\n\t" : " ",
gfp.in_samplerate / 1000,
gfp.num_channels,
gfp.num_channels != 1 ? "s" : "");
}
if (enc.enc_delay > -1 || enc.enc_padding > -1)
{
if (enc.enc_delay > -1)
{
skip_start = enc.enc_delay + 528 + 1;
}
if (enc.enc_padding > -1)
{
skip_end = enc.enc_padding - (528 + 1);
}
}
else
{
skip_start = gfp.encoder_delay + 528 + 1;
}
Console.Write("MPEG-{0:D}{1} Layer {2}", 2 - gfp.version, gfp.out_samplerate < 16000 ? ".5" : "", "III");
Console.Write(")\noutput: (16 bit, Microsoft WAVE)\n");
if (skip_start > 0)
{
Console.Write("skipping initial {0:D} samples (encoder+decoder delay)\n", skip_start);
}
if (skip_end > 0)
{
Console.Write("skipping final {0:D} samples (encoder padding-decoder delay)\n", skip_end);
}
wavsize = -(skip_start + skip_end);
parse.mp3input_data.totalframes = parse.mp3input_data.nsamp / parse.mp3input_data.framesize;
Debug.Assert(gfp.num_channels >= 1 && gfp.num_channels <= 2);
}
public Mp3Decoder(Stream mp3Stream)
{
// encoder modules
lame = new Lame();
gaud = new GetAudio();
ga = new GainAnalysis();
bs = new BitStream();
p = new Presets();
qupvt = new QuantizePVT();
qu = new Quantize();
vbr = new VBRTag();
ver = new Mp3Version();
id3 = new ID3Tag();
rv = new Reservoir();
tak = new Takehiro();
parse = new Parse();
mpg = new MPGLib();
intf = new Interface();
common = new Mpg.Common();
lame.setModules(ga, bs, p, qupvt, qu, vbr, ver, id3, mpg);
bs.setModules(ga, mpg, ver, vbr);
id3.setModules(bs, ver);
p.Modules = lame;
qu.setModules(bs, rv, qupvt, tak);
qupvt.setModules(tak, rv, lame.enc.psy);
rv.Modules = bs;
tak.Modules = qupvt;
vbr.setModules(lame, bs, ver);
gaud.setModules(parse, mpg);
parse.setModules(ver, id3, p);
// decoder modules
mpg.setModules(intf, common);
intf.setModules(vbr, common);
gfp = lame.lame_init();
/*
* turn off automatic writing of ID3 tag data into mp3 stream we have to
* call it before 'lame_init_params', because that function would spit
* out ID3v2 tag data.
*/
gfp.write_id3tag_automatic = false;
/*
* Now that all the options are set, lame needs to analyze them and set
* some more internal options and check for problems
*/
lame.lame_init_params(gfp);
parse.input_format = GetAudio.sound_file_format.sf_mp3;
var enc = new Enc();
gaud.init_infile(gfp, mp3Stream, enc);
SkipStart = 0;
SkipEnd = 0;
if (enc.enc_delay > -1 || enc.enc_padding > -1)
{
if (enc.enc_delay > -1)
{
SkipStart = enc.enc_delay + 528 + 1;
}
if (enc.enc_padding > -1)
{
SkipEnd = enc.enc_padding - (528 + 1);
}
}
else
{
SkipStart = gfp.encoder_delay + 528 + 1;
}
WavSize = -(SkipStart + SkipEnd);
parse.mp3input_data.totalframes = parse.mp3input_data.nsamp / parse.mp3input_data.framesize;
Framesize = parse.mp3input_data.framesize;
SampleRate = parse.mp3input_data.samplerate;
Length = parse.mp3input_data.nsamp;
Channels = gfp.num_channels;
Debug.Assert(gfp.num_channels >= 1 && gfp.num_channels <= 2);
}