The LAME APIThis is the simple interface to the lightweight encoding libraryobtained by compiling libmp3lame.a without defining any ofthe following extra features:#define HAVEMPGLIB   to use mpglib's mp3 *decoding* capibility#define AMIGA_MPEGA  to use mpega.library (Amiga), don't use with HAVEMPGLIB#define HAVEVORBIS   to use libvorbis decoding and encoding capibility#define LIBSNDFILE   to use Erik de Castro Lopo's libsndfile#define LAMESNDFILE  to use LAME's minimial internal sndfile I/O#define BRHIST       to allow the optional display of the VBR historgram#define NOTERMCAP    to try and emulate termcap/ncurses directly (ANSI)                     only needed if BRHIST is usedTo use any of the above features, see lame.h more for details.For an example of a simple command line interface to lame, seemain.c=========================================================================1. (optional) Get the version number of the encoder, if you are interested.     lame_version(char *);2. Initialize the encoder.  sets default for all encoder parameters.   #include "lame.h"   lame_global_flags gf;   lame_init(&gf);Then override various default settings as necessary, for example:   gf.num_channels=2;   gf.in_samplerate = 44100;   gf.brate = 128;   gf.mode = 0,1 or 3      /* stereo, jstereo, mono */   gf.quality = 2,5 or 9       /* 2=high, 5=medium 9=low */see lame.h for the complete list of options.3. sets more internal configuration based on data provided above:   lame_init_params(&gf);4. Encode some data.  input pcm data, output (maybe) mp3 frames.This routine handles all buffering, resampling and filtering for you.The required mp3buffer_size can be computed from num_samples, samplerate and encoding rate, but here is a worst case estimate:mp3buffer_size (in bytes) = 1.25*num_samples + 7200The return code = number of bytes output in mp3buffer.  This can be 0.If it is <0, an error occured.     int lame_encode_buffer(lame_global_flags *gfp,         short int leftpcm[], short int rightpcm[],         int num_samples,char *mp3buffer,int  mp3buffer_size);5. lame_encode_finish will flush the buffers and may return a final few mp3 frames.  mp3buffer should be at least 7200 bytes.return code = number of bytes output to mp3buffer.  This can be 0.   int lame_encode_finish(lame_global_flags *gfp,char *mp3buffer);