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FFmpegAndroid/app/src/main/cpp/sox/libsox_i.c

116 lines
3.2 KiB

/* libSoX internal functions that apply to both formats and effects
* All public functions & data are prefixed with lsx_ .
*
* Copyright (c) 2008 robs@users.sourceforge.net
*
* 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
*/
#include "sox_i.h"
#ifdef HAVE_IO_H
#include <io.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined(_MSC_VER) || defined(__MINGW32__)
#define MKTEMP_X _O_BINARY|_O_TEMPORARY
#else
#define MKTEMP_X 0
#endif
#ifndef HAVE_MKSTEMP
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#define mkstemp(t) open(mktemp(t), MKTEMP_X|O_RDWR|O_TRUNC|O_CREAT, S_IREAD|S_IWRITE)
#define FAKE_MKSTEMP "fake "
#else
#define FAKE_MKSTEMP
#endif
#ifdef WIN32
static int check_dir(char * buf, size_t buflen, char const * name)
{
struct stat st;
if (!name || stat(name, &st) || (st.st_mode & S_IFMT) != S_IFDIR)
{
return 0;
}
else
{
strncpy(buf, name, buflen);
buf[buflen - 1] = 0;
return strlen(name) == strlen(buf);
}
}
#endif
FILE * lsx_tmpfile(void)
{
char const * path = sox_globals.tmp_path;
/*
On Win32, tmpfile() is broken - it creates the file in the root directory of
the current drive (the user probably doesn't have permission to write there!)
instead of in a valid temporary directory (like TEMP or TMP). So if tmp_path
is null, figure out a reasonable default.
To force use of tmpfile(), set sox_globals.tmp_path = "".
*/
#ifdef WIN32
if (!path)
{
static char default_path[260] = "";
if (default_path[0] == 0
&& !check_dir(default_path, sizeof(default_path), getenv("TEMP"))
&& !check_dir(default_path, sizeof(default_path), getenv("TMP"))
#ifdef __CYGWIN__
&& !check_dir(default_path, sizeof(default_path), "/tmp")
#endif
)
{
strcpy(default_path, ".");
}
path = default_path;
}
#endif
if (path && path[0]) {
/* Emulate tmpfile (delete on close); tmp dir is given tmp_path: */
char const * const end = "/libSoX.tmp.XXXXXX";
char * name = lsx_malloc(strlen(path) + strlen(end) + 1);
int fildes;
strcpy(name, path);
strcat(name, end);
fildes = mkstemp(name);
#ifdef HAVE_UNISTD_H
lsx_debug(FAKE_MKSTEMP "mkstemp, name=%s (unlinked)", name);
unlink(name);
#else
lsx_debug(FAKE_MKSTEMP "mkstemp, name=%s (O_TEMPORARY)", name);
#endif
free(name);
return fildes == -1? NULL : fdopen(fildes, "w+b");
}
/* Use standard tmpfile (delete on close); tmp dir is undefined: */
lsx_debug("tmpfile()");
return tmpfile();
}