sm64pc/tools/audiofile-0.3.6/libaudiofile/util.cpp

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2020-05-05 12:15:53 +00:00
/*
Audio File Library
Copyright (C) 1998-2000, Michael Pruett <michael@68k.org>
Copyright (C) 2000, Silicon Graphics, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA
*/
/*
util.c
This file contains general utility routines for the Audio File
Library.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "audiofile.h"
#include "aupvlist.h"
#include "AudioFormat.h"
#include "File.h"
#include "FileHandle.h"
#include "Setup.h"
#include "Track.h"
#include "afinternal.h"
#include "aupvinternal.h"
#include "byteorder.h"
#include "compression.h"
#include "pcm.h"
#include "units.h"
#include "util.h"
/*
_af_filesetup_ok and _af_filehandle_ok are sanity check routines
which are called at the beginning of every external subroutine.
*/
bool _af_filesetup_ok (AFfilesetup setup)
{
if (setup == AF_NULL_FILESETUP)
{
_af_error(AF_BAD_FILESETUP, "null file setup");
return false;
}
if (setup->valid != _AF_VALID_FILESETUP)
{
_af_error(AF_BAD_FILESETUP, "invalid file setup");
return false;
}
return true;
}
bool _af_filehandle_ok (AFfilehandle file)
{
if (file == AF_NULL_FILEHANDLE)
{
_af_error(AF_BAD_FILEHANDLE, "null file handle");
return false;
}
if (file->m_valid != _AF_VALID_FILEHANDLE)
{
_af_error(AF_BAD_FILEHANDLE, "invalid file handle");
return false;
}
return true;
}
void *_af_malloc (size_t size)
{
void *p;
if (size <= 0)
{
_af_error(AF_BAD_MALLOC, "bad memory allocation size request %zd", size);
return NULL;
}
p = malloc(size);
#ifdef AF_DEBUG
if (p)
memset(p, 0xff, size);
#endif
if (p == NULL)
{
_af_error(AF_BAD_MALLOC, "allocation of %zd bytes failed", size);
return NULL;
}
return p;
}
char *_af_strdup (const char *s)
{
char *p = (char *) malloc(strlen(s) + 1);
if (p)
strcpy(p, s);
return p;
}
void *_af_realloc (void *p, size_t size)
{
if (size <= 0)
{
_af_error(AF_BAD_MALLOC, "bad memory allocation size request %zd", size);
return NULL;
}
p = realloc(p, size);
if (p == NULL)
{
_af_error(AF_BAD_MALLOC, "allocation of %zd bytes failed", size);
return NULL;
}
return p;
}
void *_af_calloc (size_t nmemb, size_t size)
{
void *p;
if (nmemb <= 0 || size <= 0)
{
_af_error(AF_BAD_MALLOC, "bad memory allocation size request "
"%zd elements of %zd bytes each", nmemb, size);
return NULL;
}
p = calloc(nmemb, size);
if (p == NULL)
{
_af_error(AF_BAD_MALLOC, "allocation of %zd bytes failed",
nmemb*size);
return NULL;
}
return p;
}
AUpvlist _af_pv_long (long val)
{
AUpvlist ret = AUpvnew(1);
AUpvsetparam(ret, 0, 0);
AUpvsetvaltype(ret, 0, AU_PVTYPE_LONG);
AUpvsetval(ret, 0, &val);
return ret;
}
AUpvlist _af_pv_double (double val)
{
AUpvlist ret = AUpvnew(1);
AUpvsetparam(ret, 0, 0);
AUpvsetvaltype(ret, 0, AU_PVTYPE_DOUBLE);
AUpvsetval(ret, 0, &val);
return ret;
}
AUpvlist _af_pv_pointer (void *val)
{
AUpvlist ret = AUpvnew(1);
AUpvsetparam(ret, 0, 0);
AUpvsetvaltype(ret, 0, AU_PVTYPE_PTR);
AUpvsetval(ret, 0, &val);
return ret;
}
bool _af_pv_getlong (AUpvlist pvlist, int param, long *l)
{
for (int i=0; i<AUpvgetmaxitems(pvlist); i++)
{
int p, t;
AUpvgetparam(pvlist, i, &p);
if (p != param)
continue;
AUpvgetvaltype(pvlist, i, &t);
/* Ensure that this parameter is of type AU_PVTYPE_LONG. */
if (t != AU_PVTYPE_LONG)
return false;
AUpvgetval(pvlist, i, l);
return true;
}
return false;
}
bool _af_pv_getdouble (AUpvlist pvlist, int param, double *d)
{
for (int i=0; i<AUpvgetmaxitems(pvlist); i++)
{
int p, t;
AUpvgetparam(pvlist, i, &p);
if (p != param)
continue;
AUpvgetvaltype(pvlist, i, &t);
/* Ensure that this parameter is of type AU_PVTYPE_DOUBLE. */
if (t != AU_PVTYPE_DOUBLE)
return false;
AUpvgetval(pvlist, i, d);
return true;
}
return false;
}
bool _af_pv_getptr (AUpvlist pvlist, int param, void **v)
{
for (int i=0; i<AUpvgetmaxitems(pvlist); i++)
{
int p, t;
AUpvgetparam(pvlist, i, &p);
if (p != param)
continue;
AUpvgetvaltype(pvlist, i, &t);
/* Ensure that this parameter is of type AU_PVTYPE_PTR. */
if (t != AU_PVTYPE_PTR)
return false;
AUpvgetval(pvlist, i, v);
return true;
}
return false;
}
int _af_format_sample_size_uncompressed (const AudioFormat *format, bool stretch3to4)
{
int size = 0;
switch (format->sampleFormat)
{
case AF_SAMPFMT_FLOAT:
size = sizeof (float);
break;
case AF_SAMPFMT_DOUBLE:
size = sizeof (double);
break;
default:
size = (int) (format->sampleWidth + 7) / 8;
if (format->compressionType == AF_COMPRESSION_NONE &&
size == 3 && stretch3to4)
size = 4;
break;
}
return size;
}
float _af_format_sample_size (const AudioFormat *fmt, bool stretch3to4)
{
const CompressionUnit *unit = _af_compression_unit_from_id(fmt->compressionType);
float squishFactor = unit->squishFactor;
return _af_format_sample_size_uncompressed(fmt, stretch3to4) /
squishFactor;
}
int _af_format_frame_size_uncompressed (const AudioFormat *fmt, bool stretch3to4)
{
return _af_format_sample_size_uncompressed(fmt, stretch3to4) *
fmt->channelCount;
}
float _af_format_frame_size (const AudioFormat *fmt, bool stretch3to4)
{
const CompressionUnit *unit = _af_compression_unit_from_id(fmt->compressionType);
float squishFactor = unit->squishFactor;
return _af_format_frame_size_uncompressed(fmt, stretch3to4) /
squishFactor;
}
/*
Set the sampleFormat and sampleWidth fields in f, and set the
PCM info to the appropriate default values for the given sample
format and sample width.
*/
status _af_set_sample_format (AudioFormat *f, int sampleFormat, int sampleWidth)
{
switch (sampleFormat)
{
case AF_SAMPFMT_UNSIGNED:
case AF_SAMPFMT_TWOSCOMP:
if (sampleWidth < 1 || sampleWidth > 32)
{
_af_error(AF_BAD_SAMPFMT,
"illegal sample width %d for integer data",
sampleWidth);
return AF_FAIL;
}
else
{
int bytes;
f->sampleFormat = sampleFormat;
f->sampleWidth = sampleWidth;
bytes = _af_format_sample_size_uncompressed(f, false);
if (sampleFormat == AF_SAMPFMT_TWOSCOMP)
f->pcm = _af_default_signed_integer_pcm_mappings[bytes];
else
f->pcm = _af_default_unsigned_integer_pcm_mappings[bytes];
}
break;
case AF_SAMPFMT_FLOAT:
f->sampleFormat = sampleFormat;
f->sampleWidth = 32;
f->pcm = _af_default_float_pcm_mapping;
break;
case AF_SAMPFMT_DOUBLE:
f->sampleFormat = sampleFormat;
f->sampleWidth = 64; /*for convenience */
f->pcm = _af_default_double_pcm_mapping;
break;
default:
_af_error(AF_BAD_SAMPFMT, "unknown sample format %d",
sampleFormat);
return AF_FAIL;
}
return AF_SUCCEED;
}
/*
Verify the uniqueness of the nids ids given.
idname is the name of what the ids identify, as in "loop"
iderr is an error as in AF_BAD_LOOPID
*/
bool _af_unique_ids (const int *ids, int nids, const char *idname, int iderr)
{
for (int i = 0; i < nids; i++)
{
for (int j = 0; j < i; j++)
{
if (ids[i] == ids[j])
{
_af_error(iderr, "nonunique %s id %d", idname, ids[i]);
return false;
}
}
}
return true;
}