/* MPGLIB replacement using mpega.library (AmigaOS) * Written by Thomas Wenzel and Sigbj鴕n (CISC) Skj鎟et. * * Big thanks to St閜hane Tavernard for mpega.library. * */#ifdef AMIGA_MPEGA#include "lame.h"#include "util.h"#include <stdio.h>#include <stdlib.h>#define __USE_SYSBASE#include <proto/exec.h>#include <dos.h>#include <proto/mpega.h>struct Library  *MPEGABase=NULL;MPEGA_STREAM    *mstream=NULL;MPEGA_CTRL      mctrl;static int break_cleanup(void){	/* Dummy break function to make atexit() work. :P */	return 1;}static void exit_cleanup(void){	if(mstream) {		MPEGA_close(mstream);		mstream = NULL;	}	if(MPEGABase) {		CloseLibrary(MPEGABase);		MPEGABase = NULL;	}}int lame_decode_initfile(const char *fullname, mp3data_struct *mp3data){	mctrl.bs_access = NULL;	mctrl.layer_1_2.mono.quality    = 2;	mctrl.layer_1_2.stereo.quality  = 2;	mctrl.layer_1_2.mono.freq_div   = 1;	mctrl.layer_1_2.stereo.freq_div = 1;	mctrl.layer_1_2.mono.freq_max   = 48000;	mctrl.layer_1_2.stereo.freq_max = 48000;	mctrl.layer_3.mono.quality      = 2;	mctrl.layer_3.stereo.quality    = 2;	mctrl.layer_3.mono.freq_div     = 1;	mctrl.layer_3.stereo.freq_div   = 1;	mctrl.layer_3.mono.freq_max     = 48000;	mctrl.layer_3.stereo.freq_max   = 48000;	mctrl.layer_1_2.force_mono      = 0;	mctrl.layer_3.force_mono        = 0;	MPEGABase = OpenLibrary("mpega.library", 2);	if(!MPEGABase) {		fprintf(stderr, "Unable to open mpega.library v2\n");		exit(1);	}	onbreak(break_cleanup);	atexit(exit_cleanup);	mstream=MPEGA_open(fullname, &mctrl);	if(!mstream) { return (-1); }	mp3data->stereo     = mstream->dec_channels;	mp3data->samplerate = mstream->dec_frequency;	mp3data->bitrate    = mstream->bitrate;	mp3data->nsamp      = (FLOAT)mstream->ms_duration/1000 * mstream->dec_frequency;	return 0;}int lame_decode_fromfile(FILE *fd, short pcm_l[],short pcm_r[],mp3data_struct *mp3data){	int outsize=0;	WORD *b[MPEGA_MAX_CHANNELS];	b[0]=pcm_l;	b[1]=pcm_r;	while ((outsize == 0) || (outsize == MPEGA_ERR_BADFRAME))	/* Skip bad frames */		outsize = MPEGA_decode_frame(mstream, b);	mp3data->stereo     = mstream->dec_channels;	mp3data->samplerate = mstream->dec_frequency;	mp3data->bitrate    = mstream->bitrate;	mp3data->nsamp      = (FLOAT)mstream->ms_duration/1000 * mstream->dec_frequency;	if (outsize < 0) { return (-1); }	else { return outsize; }}#endif /* AMIGA_MPEGA */