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https://github.com/alsa-project/alsa-tools.git
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124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
/*
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*
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* output_solaris.c
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*
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* Copyright (C) Aaron Holtzman - May 1999
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*
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* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
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*
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* ac3dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* ac3dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/audioio.h>
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#include <sys/ioctl.h>
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#include <stropts.h>
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#include <signal.h>
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#include <math.h>
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//FIXME broken solaris headers!
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int usleep(unsigned int useconds);
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//this sux...types should go in config.h methinks
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typedef signed short sint_16;
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typedef unsigned int uint_32;
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#include "output.h"
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/* Global to keep track of old state */
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static audio_info_t info;
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static char dev[] = "/dev/audio";
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static int fd;
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/*
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* open the audio device for writing to
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*/
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int output_open(int bits, int rate, int channels)
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{
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/*
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* Open the device driver
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*/
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fd=open(dev,O_WRONLY);
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if(fd < 0)
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{
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fprintf(stderr,"%s: Opening audio device %s\n",
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strerror(errno), dev);
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goto ERR;
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}
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fprintf(stderr,"Opened audio device \"%s\"\n",dev);
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/* Setup our parameters */
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AUDIO_INITINFO(&info);
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info.play.sample_rate = rate;
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info.play.precision = bits;
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info.play.channels = channels;
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info.play.buffer_size = 1024;
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info.play.encoding = AUDIO_ENCODING_LINEAR;
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//info.play.port = AUDIO_SPEAKER;
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//info.play.gain = 110;
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/* Write our configuration */
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/* An implicit GETINFO is also performed so we can get
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* the buffer_size */
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if(ioctl(fd, AUDIO_SETINFO, &info) < 0)
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{
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fprintf(stderr, "%s: Writing audio config block\n",strerror(errno));
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goto ERR;
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}
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return 1;
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ERR:
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if(fd >= 0) { close(fd); }
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return 0;
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}
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unsigned long j= 0 ;
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/*
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* play the sample to the already opened file descriptor
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*/
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void output_play(sint_16* output_samples, uint_32 num_bytes)
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{
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write(fd,&output_samples[0 * 512],1024);
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write(fd,&output_samples[1 * 512],1024);
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write(fd,&output_samples[2 * 512],1024);
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write(fd,&output_samples[3 * 512],1024);
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write(fd,&output_samples[4 * 512],1024);
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write(fd,&output_samples[5 * 512],1024);
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}
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void
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output_close(void)
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{
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close(fd);
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}
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