sm64pc/tools/audiofile-0.3.6/test/twentyfour.c
2020-05-07 20:21:22 +02:00

245 lines
5.6 KiB
C

/*
Audio File Library
Copyright (C) 2001, Silicon Graphics, Inc.
Michael Pruett <mpruett@sgi.com>
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.
*/
/*
twentyfour.c
This program tests the conversion between 24-bit signed integer
data in a file and 32-bit signed integer data in memory.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <audiofile.h>
#include "TestUtilities.h"
#define FRAME_COUNT 6
int main (int argc, char **argv)
{
AFfilehandle file;
AFfilesetup setup;
/* All elements in frames32 must be in the range -2^23 to 2^23 - 1. */
const int32_t frames32[FRAME_COUNT] =
{4314298, -49392, 3923, -143683, 43, -992129};
const uint8_t frames24[FRAME_COUNT*3] =
{
0x41, 0xd4, 0xba, /* 4314298 */
0xff, 0x3f, 0x10, /* -49392 */
0x00, 0x0f, 0x53, /* 3923 */
0xfd, 0xce, 0xbd, /* -143683 */
0x00, 0x00, 0x2b, /* 43 */
0xf0, 0xdc, 0x7f /* -992129 */
};
int32_t readframes32[FRAME_COUNT];
int i;
setup = afNewFileSetup();
assert(setup);
afInitFileFormat(setup, AF_FILE_AIFF);
afInitSampleFormat(setup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 24);
afInitChannels(setup, AF_DEFAULT_TRACK, 1);
char testFileName[PATH_MAX];
if (!createTemporaryFile("twentyfour", 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, 24);
afWriteFrames(file, AF_DEFAULT_TRACK, frames32, FRAME_COUNT);
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);
}
/* Test virtual sample width of 24 bits. */
#ifdef DEBUG
fprintf(stderr, "Testing virtual sample width of 24 bits.\n");
#endif
afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 24);
for (i=0; i<FRAME_COUNT; i++)
{
uint8_t x[4];
uint8_t y[4];
uint8_t z[4];
if ((frames32[i] & 0x800000) != 0)
x[0] = 0xff;
else
x[0] = 0;
x[1] = (frames32[i] >> 16) & 0xff;
x[2] = (frames32[i] >> 8) & 0xff;
x[3] = (frames32[i]) & 0xff;
/*
Check to see that the precomputed values match
what we've just computed.
*/
if (x[1] != frames24[3*i] ||
x[2] != frames24[3*i + 1] ||
x[3] != frames24[3*i + 2])
{
fprintf(stderr, "Data doesn't match pre-computed values.\n");
exit(EXIT_FAILURE);
}
if (afReadFrames(file, AF_DEFAULT_TRACK, y, 1) != 1)
{
fprintf(stderr, "Could not read from test file.\n");
exit(EXIT_FAILURE);
}
/*
x is in big-endian byte order; make z a
native-endian copy of x.
*/
#ifdef WORDS_BIGENDIAN
memcpy(z, x, 4);
#else
z[0] = x[3];
z[1] = x[2];
z[2] = x[1];
z[3] = x[0];
#endif
#ifdef DEBUG
printf("x = %02x %02x %02x %02x\n", x[0], x[1], x[2], x[3]);
printf("y = %02x %02x %02x %02x\n", y[0], y[1], y[2], y[3]);
printf("z = %02x %02x %02x %02x\n", z[0], z[1], z[2], z[3]);
#endif
/*
Check to see that the data read from the file
matches computed value.
*/
if (memcmp(y, z, 4) != 0)
{
fprintf(stderr, "Data read from file is incorrect.\n");
exit(EXIT_FAILURE);
}
}
/* Test virtual sample width of 32 bits. */
#ifdef DEBUG
fprintf(stderr, "Testing virtual sample width of 32 bits.\n");
#endif
afSeekFrame(file, AF_DEFAULT_TRACK, 0);
afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 32);
for (i=0; i<FRAME_COUNT; i++)
{
uint8_t x[4];
uint8_t y[4];
uint8_t z[4];
x[0] = (frames32[i] >> 16) & 0xff;
x[1] = (frames32[i] >> 8) & 0xff;
x[2] = (frames32[i]) & 0xff;
x[3] = 0;
/*
Check to see that the precomputed values match
what we've just computed.
*/
if (x[0] != frames24[3*i] ||
x[1] != frames24[3*i + 1] ||
x[2] != frames24[3*i + 2])
{
fprintf(stderr, "Data doesn't match pre-computed values.\n");
exit(EXIT_FAILURE);
}
if (afReadFrames(file, AF_DEFAULT_TRACK, y, 1) != 1)
{
fprintf(stderr, "Could not read from test file.\n");
exit(EXIT_FAILURE);
}
/*
x is in big-endian byte order; make z a
native-endian copy of x.
*/
#ifdef WORDS_BIGENDIAN
memcpy(z, x, 4);
#else
z[0] = x[3];
z[1] = x[2];
z[2] = x[1];
z[3] = x[0];
#endif
#ifdef DEBUG
printf("x = %02x %02x %02x %02x\n", x[0], x[1], x[2], x[3]);
printf("y = %02x %02x %02x %02x\n", y[0], y[1], y[2], y[3]);
printf("z = %02x %02x %02x %02x\n", z[0], z[1], z[2], z[3]);
#endif
/*
Check to see that the data read from the file
matches computed value.
*/
if (memcmp(y, z, 4) != 0)
{
fprintf(stderr, "Data read from file is incorrect.\n");
exit(EXIT_FAILURE);
}
}
if (afCloseFile(file) != 0)
{
fprintf(stderr, "Error closing file.\n");
exit(EXIT_FAILURE);
}
unlink(testFileName);
exit(EXIT_SUCCESS);
}