/*	esd: audio output for ESounD (highly untested nowadays (?))	copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1	see COPYING and AUTHORS files in distribution or http://mpg123.org	initially written by Eric B. Mitchell ("esd port" should be this file...)*/#include <esd.h>#include <errno.h>#include <assert.h>#include "mpg123app.h"#ifdef SOLARIS#include <stropts.h>#include <sys/conf.h>#endif#include "debug.h"static unsigned esd_rate = 0, esd_format = 0, esd_channels = 0;static int open_esound(audio_output_t *ao){	esd_format_t format = ESD_STREAM | ESD_PLAY;	if (!esd_rate)	{		int esd;		esd_server_info_t *info;		esd_format_t fmt;				if ((esd = esd_open_sound(NULL)) >= 0)		{			info = esd_get_server_info(esd);			esd_rate = info->rate;			fmt = info->format;			esd_free_server_info(info);			esd_close(esd);		}		else		{			esd_rate = esd_audio_rate;			fmt = esd_audio_format;		}		esd_format = MPG123_ENC_UNSIGNED_8;				if ((fmt & ESD_MASK_BITS) == ESD_BITS16)			esd_format |= MPG123_ENC_SIGNED_16;		esd_channels = fmt & ESD_MASK_CHAN;	}		if (ao->format == -1)		ao->format = esd_format;	else if (!(ao->format & esd_format))	{		error1("Unsupported audio format: %d\n", ao->format);		errno = EINVAL;		return -1;	}			if (ao->format & MPG123_ENC_SIGNED_16)		format |= ESD_BITS16;	else if (ao->format & MPG123_ENC_UNSIGNED_8)		format |= ESD_BITS8;	else assert(0);		if (ao->channels == -1) ao->channels = 2;	else if (ao->channels <= 0 || ao->channels > esd_channels)	{		error1("Unsupported no of channels: %d\n", ao->channels);		errno = EINVAL;		return -1;	}	if (ao->channels == 1)		format |= ESD_MONO;	else if (ao->channels == 2)		format |= ESD_STEREO;	else assert(0);		if (ao->rate == -1) ao->rate = esd_rate;	else if (ao->rate > esd_rate)	return -1;		ao->fn = esd_play_stream_fallback(format, ao->rate, ao->device, "mpg123");	return (ao->fn);}static int get_formats_esound (audio_output_t *ao){	if (0 < ao->channels && ao->channels <= esd_channels 	    && 0 < ao->rate && ao->rate <= esd_rate)	{		return esd_format;	} else {		return -1;	}}static int write_esound(audio_output_t *ao,unsigned char *buf,int len){	return write(ao->fn,buf,len);}static int close_esound(audio_output_t *ao){	close (ao->fn);	return 0;}#ifdef SOLARISstatic void flush_esound (audio_output_t *ao){        ioctl (ao->fn, I_FLUSH, FLUSHRW);}#else#ifdef NETBSDstatic void flush_esound (audio_output_t *ao){        ioctl (ao->fn, AUDIO_FLUSH, 0);}#else/* Dunno what to do on Linux and Cygwin, but the func must be at least defined! */static void flush_esound (audio_output_t *ao){}#endif#endifstatic int init_esound(audio_output_t* ao){	if (ao==NULL) return -1;	/* Set callbacks */	ao->open = open_esound;	ao->flush = flush_esound;	ao->write = write_esound;	ao->get_formats = get_formats_esound;	ao->close = close_esound;	/* Success */	return 0;}/* 	Module information data structure*/mpg123_module_t mpg123_output_module_info = {	/* api_version */	MPG123_MODULE_API_VERSION,	/* name */			"esd",							/* description */	"Output audio using ESounD (The Enlightened Sound Daemon).",	/* revision */		"$Rev: 1428 $",							/* handle */		NULL,		/* init_output */	init_esound,						};