119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/*
|
|
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);
|
|
}
|