/*

	hp: audio output for HP-UX

	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 Michael Hipp

*/

#include "out123_int.h"

#include <fcntl.h>

#include <sys/audio.h>

#include "debug.h"

static int set_rate(out123_handle *ao)

{

	if(ao->rate >= 0) {

		return ioctl(ao->fn,AUDIO_SET_SAMPLE_RATE,ao->rate);

	} else {

		return 0;

	}

}

static int set_channels(out123_handle *ao)

{

	if(ao->channels<0) return 0;

	return ioctl(ao->fn,AUDIO_SET_CHANNELS,ao->channels);

}

static int set_format(out123_handle *ao)

{

	int fmt;

	switch(ao->format) {

		case -1:

		case MPG123_ENC_SIGNED_16:

		default: 

			fmt = MPG123_ENC_LINEAR16BIT;

		break;

		case MPG123_ENC_UNSIGNED_8:

			error("unsigned 8 bit linear not supported");

			return -1;

		case MPG123_ENC_SIGNED_8:

			error("signed 8 bit linear not supported");

			return -1;

		case MPG123_ENC_ALAW_8:

			fmt = MPG123_ENC_ALAW;

		break;

		case MPG123_ENC_ULAW_8:

			fmt = MPG123_ENC_ULAW;

		break;

	}

	return ioctl(ao->fn,AUDIO_SET_DATA_FORMAT,fmt);

}

static int get_formats(out123_handle *ao)

{

	return MPG123_ENC_SIGNED_16;

}

static int reset_parameters(out123_handle *ao)

{

	int ret;

		ret = set_format(ai);

	if(ret >= 0)

		ret = set_channels_hp(ai);

	if(ret >= 0)

		ret = set_rate_hp(ai);

	return ret;

}

static int open_hp(out123_handle *ao)

{

	struct audio_describe ades;

	struct audio_gain again;

	int i,audio;

	ao->fn = open("/dev/audio",O_RDWR);

	if(ao->fn < 0)

		return -1;

	ioctl(ao->fn,AUDIO_DESCRIBE,&ades);

	if(ao->gain != -1)

	{

		if(ao->gain > ades.max_transmit_gain)

		{

			error("your gainvalue was to high -> set to maximum.");

			ao->gain = ades.max_transmit_gain;

		}

		if(ao->gain < ades.min_transmit_gain)

		{

			error("your gainvalue was to low -> set to minimum.");

			ao->gain = ades.min_transmit_gain;

		}

		again.channel_mask = AUDIO_CHANNEL_0 | AUDIO_CHANNEL_1;

		ioctl(ao->fn,AUDIO_GET_GAINS,&again);

		again.cgain[0].transmit_gain = ao->gain;

		again.cgain[1].transmit_gain = ao->gain;

		again.channel_mask = AUDIO_CHANNEL_0 | AUDIO_CHANNEL_1;

		ioctl(ao->fn,AUDIO_SET_GAINS,&again);

	}

	if(ao->flags != -1)

	{

		if(ao->flags & OUT123_INTERNAL_SPEAKER)

			ioctl(ao->fn,AUDIO_SET_OUTPUT,OUT123_SPEAKER);

		else if(ao->flags & OUT123_HEADPHONES)

			ioctl(ao->fn,AUDIO_SET_OUTPUT,OUT123_HEADPHONE);

		else if(ao->flags & OUT123_LINE_OUT)

			ioctl(ao->fn,AUDIO_SET_OUTPUT,OUT123_LINE);

	}

	if(ao->rate == -1)

		ao->rate = 44100;

	for(i=0;i

	{

		if(ao->rate == ades.sample_rate[i])

			break;

	}

	if(i == ades.nrates)

	{

		error1("Can't set sample-rate to %ld.\n",ao->rate);

		i = 0;

	}

	if(reset_parameters(ai) < 0)

		return -1;

	return ao->fn;

}

static int write_hp(out123_handle *ao,unsigned char *buf,int len)

{

	return write(ao->fn,buf,len);

}

static int close_hp(out123_handle *ao)

{

	close (ao->fn);

	return 0;

}

static void flush_hp(out123_handle *ao)

{

}

static int init_hp(out123_handle* ao)

{

	if (ao==NULL) return -1;

	/* Set callbacks */

	ao->open = open_hp;

	ao->flush = flush_hp;

	ao->write = write_hp;

	ao->get_formats = get_formats_hp;

	ao->close = close_hp;

	/* Success */

	return 0;

}

/* 

	Module information data structure

*/

mpg123_module_t mpg123_output_module_info = {

	/* api_version */	MPG123_MODULE_API_VERSION,

	/* name */			"hp",						

	/* description */	"Output audio HP-UX",

	/* revision */		"$Rev:$",						

	/* handle */		NULL,

	/* init_output */	init_hp,						

};