109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
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/*
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Audio File Library
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Copyright 1998-1999, Michael Pruett <michael@68k.org>
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This program 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 of the License, or
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(at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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sgi.c
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These routines are used in SGI-specific test programs.
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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 <unistd.h>
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#include <audiofile.h>
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#include <dmedia/audio.h>
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/*
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Set the sample width of an audio configuration.
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*/
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void setwidth (ALconfig config, int sampleWidth)
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{
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if (sampleWidth <= 8)
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{
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printf("setting width to 8\n");
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alSetWidth(config, AL_SAMPLE_8);
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}
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else if (sampleWidth <= 16)
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{
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printf("setting width to 16\n");
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alSetWidth(config, AL_SAMPLE_16);
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}
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else if (sampleWidth <= 24)
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{
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printf("setting width to 24\n");
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alSetWidth(config, AL_SAMPLE_24);
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}
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}
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/*
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Set the sample format of an audio configuration.
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*/
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void setsampleformat (ALconfig config, int audioFileSampleFormat)
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{
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if (audioFileSampleFormat == AF_SAMPFMT_TWOSCOMP)
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{
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printf("setting sample format to 2's complement\n");
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alSetSampFmt(config, AL_SAMPFMT_TWOSCOMP);
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}
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else if (audioFileSampleFormat == AF_SAMPFMT_FLOAT)
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{
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printf("setting sample format to float\n");
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alSetSampFmt(config, AL_SAMPFMT_FLOAT);
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}
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else if (audioFileSampleFormat == AF_SAMPFMT_DOUBLE)
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{
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printf("setting sample format to double\n");
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alSetSampFmt(config, AL_SAMPFMT_DOUBLE);
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}
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}
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/*
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Set the sample rate of an audio port.
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*/
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void setrate (ALport port, double rate)
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{
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int rv;
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ALpv params;
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rv = alGetResource(port);
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params.param = AL_RATE;
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params.value.ll = alDoubleToFixed(rate);
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if (alSetParams(rv, ¶ms, 1) < 0)
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{
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printf("alSetParams failed: %s\n", alGetErrorString(oserror()));
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}
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}
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/*
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Wait until the audio port has no more samples to play.
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*/
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void waitport (ALport port)
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{
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while (alGetFilled(port) > 0)
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sginap(1);
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}
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