sm64pc/tools/audiofile-0.3.6/test/sixteen-to-eight.c

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2020-05-05 12:15:53 +00:00
/*
Audio File Library
Copyright 2000, Silicon Graphics, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
sixteen-to-eight.c
This program tests the conversion from 16-bit integers to 8-bit
integers.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <audiofile.h>
#include "TestUtilities.h"
int main (int argc, char **argv)
{
AFfilehandle file;
AFfilesetup setup;
int16_t frames16[] = {14298, 392, 3923, -683, 958, -1921};
int8_t frames8[] = {55, 1, 15, -3, 3, -8};
int i, frameCount = 6;
int8_t byte;
AFframecount result;
setup = afNewFileSetup();
afInitFileFormat(setup, AF_FILE_WAVE);
afInitSampleFormat(setup, AF_DEFAULT_TRACK, AF_SAMPFMT_UNSIGNED, 8);
afInitChannels(setup, AF_DEFAULT_TRACK, 1);
char testFileName[PATH_MAX];
if (!createTemporaryFile("sixteen-to-eight", testFileName))
{
fprintf(stderr, "Could not create temporary file.\n");
exit(EXIT_FAILURE);
}
file = afOpenFile(testFileName, "w", setup);
if (file == AF_NULL_FILEHANDLE)
{
fprintf(stderr, "could not open file for writing\n");
exit(EXIT_FAILURE);
}
afFreeFileSetup(setup);
afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
afWriteFrames(file, AF_DEFAULT_TRACK, frames16, frameCount);
afCloseFile(file);
file = afOpenFile(testFileName, "r", AF_NULL_FILESETUP);
if (file == AF_NULL_FILEHANDLE)
{
fprintf(stderr, "could not open file for reading\n");
exit(EXIT_FAILURE);
}
afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 8);
for (i=0; i<frameCount; i++)
{
/* Read one frame. */
result = afReadFrames(file, AF_DEFAULT_TRACK, &byte, 1);
if (result != 1)
break;
/* Compare the byte read with its precalculated value. */
if (memcmp(&byte, &frames8[i], 1) != 0)
{
printf("error\n");
printf("expected %d, got %d\n", frames8[i], byte);
exit(EXIT_FAILURE);
}
else
{
#ifdef DEBUG
printf("got what was expected: %d\n", byte);
#endif
}
}
afCloseFile(file);
unlink(testFileName);
exit(EXIT_SUCCESS);
}