178 lines
4.6 KiB
C
178 lines
4.6 KiB
C
/*
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Audio File Library
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Copyright (C) 2000, Michael Pruett <michael@68k.org>
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Copyright (C) 2001, Silicon Graphics, Inc.
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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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writeulaw.c
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The writeulaw program performs sanity testing on the Audio File
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Library's G.711 u-law compression by writing and then reading
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back known data to a file to make sure the two sets of data agree.
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This program writes a set of data which is invariant under G.711
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u-law compression to a file and then reads that set of data back.
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The data read from that file should match the data written
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exactly.
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If this test fails, something in the Audio File Library is broken.
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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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#ifdef __USE_SGI_HEADERS__
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#include <dmedia/audiofile.h>
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#else
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#include <audiofile.h>
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#endif
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#include <limits.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "TestUtilities.h"
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static char sTestFileName[PATH_MAX];
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#define FRAME_COUNT 16
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#define SAMPLE_COUNT FRAME_COUNT
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void testulaw (int fileFormat);
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void cleanup (void)
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{
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#ifndef DEBUG
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unlink(sTestFileName);
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#endif
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}
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void ensure (int condition, const char *message)
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{
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if (!condition)
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{
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printf("%s.\n", message);
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cleanup();
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exit(EXIT_FAILURE);
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}
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}
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int main (int argc, char **argv)
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{
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printf("writeulaw: testing NeXT .snd.\n");
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testulaw(AF_FILE_NEXTSND);
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printf("writeulaw: testing AIFF-C.\n");
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testulaw(AF_FILE_AIFFC);
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printf("writeulaw: testing WAVE.\n");
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testulaw(AF_FILE_WAVE);
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printf("writeulaw: testing IRCAM.\n");
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testulaw(AF_FILE_IRCAM);
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printf("writeulaw: testing VOC.\n");
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testulaw(AF_FILE_VOC);
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printf("writeulaw: testing CAF.\n");
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testulaw(AF_FILE_CAF);
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printf("writeulaw test passed.\n");
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exit(0);
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}
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void testulaw (int fileFormat)
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{
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AFfilehandle file;
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AFfilesetup setup;
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uint16_t samples[] = {8, 16, 80, 120, 180, 780, 924, 988,
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1116, 1436, 1884, 8828, 9852, 15996, 19836, 32124};
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uint16_t readsamples[SAMPLE_COUNT];
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AFframecount framesWritten, framesRead;
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int i;
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setup = afNewFileSetup();
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afInitCompression(setup, AF_DEFAULT_TRACK, AF_COMPRESSION_G711_ULAW);
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afInitFileFormat(setup, fileFormat);
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afInitChannels(setup, AF_DEFAULT_TRACK, 1);
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ensure(createTemporaryFile("writeulaw", sTestFileName),
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"could not create temporary file");
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file = afOpenFile(sTestFileName, "w", setup);
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afFreeFileSetup(setup);
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ensure(afGetCompression(file, AF_DEFAULT_TRACK) ==
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AF_COMPRESSION_G711_ULAW,
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"test file not created with G.711 u-law compression");
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ensure(file != AF_NULL_FILEHANDLE, "unable to open file for writing");
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framesWritten = afWriteFrames(file, AF_DEFAULT_TRACK, samples,
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FRAME_COUNT);
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ensure(framesWritten == FRAME_COUNT,
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"number of frames requested does not match number of frames written");
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afCloseFile(file);
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/* Open the file for reading and verify the data. */
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file = afOpenFile(sTestFileName, "r", NULL);
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ensure(file != AF_NULL_FILEHANDLE, "unable to open file for reading");
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ensure(afGetFileFormat(file, NULL) == fileFormat,
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"test file format incorrect");
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ensure(afGetCompression(file, AF_DEFAULT_TRACK) ==
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AF_COMPRESSION_G711_ULAW,
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"test file not opened with G.711 u-law compression");
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framesRead = afReadFrames(file, AF_DEFAULT_TRACK, readsamples,
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FRAME_COUNT);
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ensure(framesRead == FRAME_COUNT,
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"number of frames read does not match number of frames requested");
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#ifdef DEBUG
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for (i=0; i<SAMPLE_COUNT; i++)
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printf("readsamples[%d]: %d\n", i, readsamples[i]);
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for (i=0; i<SAMPLE_COUNT; i++)
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printf("samples[%d]: %d\n", i, samples[i]);
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#endif
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for (i=0; i<SAMPLE_COUNT; i++)
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{
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ensure(samples[i] == readsamples[i],
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"data written does not match data read");
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}
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/* G.711 compression uses one byte per sample. */
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ensure(afGetTrackBytes(file, AF_DEFAULT_TRACK) == SAMPLE_COUNT,
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"track byte count is incorrect");
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ensure(afGetFrameCount(file, AF_DEFAULT_TRACK) == FRAME_COUNT,
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"frame count is incorrect");
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ensure(afGetChannels(file, AF_DEFAULT_TRACK) == 1,
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"channel count is incorrect");
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ensure(afCloseFile(file) == 0, "error closing file");
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cleanup();
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}
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