/*
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<ades.nrates;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,
};