scummvm/sound/softsynth/mt32/mt32_file.cpp

/* Copyright (c) 2003-2005 Various contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */


// FIXME: Disable symbol overrides so that we can use system headers.
// But we *really* should get rid of this usage of FILE, fopen etc.
#define FORBIDDEN_SYMBOL_ALLOW_ALL


#include <stdio.h>

#include "mt32emu.h"

namespace MT32Emu {

	bool ANSIFile::open(const char *filename, OpenMode mode) {
		const char *fmode;
		if (mode == OpenMode_read) {
			fmode = "rb";
		} else {
			fmode = "wb";
		}
		fp = fopen(filename, fmode);
		return (fp != NULL);
	}

	void ANSIFile::close() {
		fclose((FILE *)fp);
	}

	size_t ANSIFile::read(void *in, size_t size) {
		return fread(in, 1, size, (FILE *)fp);
	}

	bool ANSIFile::readBit8u(Bit8u *in) {
		int c = fgetc((FILE *)fp);
		if (c == EOF)
			return false;
		*in = (Bit8u)c;
		return true;
	}

	bool File::readBit16u(Bit16u *in) {
		Bit8u b[2];
		if (read(&b[0], 2) != 2)
			return false;
		*in = ((b[0] << 8) | b[1]);
		return true;
	}

	bool File::readBit32u(Bit32u *in) {
		Bit8u b[4];
		if (read(&b[0], 4) != 4)
			return false;
		*in = ((b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]);
		return true;
	}

	size_t ANSIFile::write(const void *out, size_t size) {
		return fwrite(out, 1, size, (FILE *)fp);
	}

	bool ANSIFile::writeBit8u(Bit8u out) {
		return fputc(out, (FILE *)fp) != EOF;
	}

	bool File::writeBit16u(Bit16u out) {
		if (!writeBit8u((Bit8u)((out & 0xFF00) >> 8))) {
			return false;
		}
		if (!writeBit8u((Bit8u)(out & 0x00FF))) {
			return false;
		}
		return true;
	}

	bool File::writeBit32u(Bit32u out) {
		if (!writeBit8u((Bit8u)((out & 0xFF000000) >> 24))) {
			return false;
		}
		if (!writeBit8u((Bit8u)((out & 0x00FF0000) >> 16))) {
			return false;
		}
		if (!writeBit8u((Bit8u)((out & 0x0000FF00) >> 8))) {
			return false;
		}
		if (!writeBit8u((Bit8u)(out & 0x000000FF))) {
			return false;
		}
		return true;
	}

	bool ANSIFile::isEOF() {
		return feof((FILE *)fp) != 0;
	}
}