/*

 * OpenAL Bridge - a simple portable library for OpenAL interface

 * Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>,

 *                    Mario Liebisch <mario.liebisch+hw@googlemail.com>

 *

 * This program 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; version 2 of the License

 *

 * 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 Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include <stdio.h>

#include <stdlib.h>

#include <stdint.h>

#include <string.h>

#include <stdarg.h>

#include <errno.h>

#include "al.h"

#include "errlib.h"

#ifndef _WIN32

#include <pthread.h>

#include <syslog.h>

#else

#include <process.h>

#define syslog(x,y) fprintf(stderr,y)

#define LOG_INFO 6

#define LOG_ERR 3

#endif

/* magics */

#define OGG_FILE_FORMAT 0x4F676753

#define WAV_FILE_FORMAT 0x52494646

#define WAV_HEADER_SUBCHUNK2ID 0x64617461

#define MAX_SOUNDS 1024

#define MAX_SOURCES 16

/* check compiler requirements */    /*FIXME*/

#if !defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)

#warning __BIG_ENDIAN__ or __LITTLE_ENDIAN__ not found, going to set __LITTLE_ENDIAN__ as default

#define __LITTLE_ENDIAN__ 1

//#error Do not know the endianess of this architecture

#endif

/* use byteswap macros from the host system, hopefully optimized ones ;-) 

 * or define our own version, simple, stupid, straight-forward... */

#ifdef HAVE_BYTESWAP_H

#include <byteswap.h>

#else        

#define bswap_16(x)	((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8))

#define bswap_32(x)	((((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8)  | \

                         (((x) & 0x0000FF00) << 8)  | (((x) & 0x000000FF) << 24) )

#endif /* HAVE_BYTESWAP_H */

/* swap numbers accordingly to architecture automatically */

#ifdef __LITTLE_ENDIAN__

#define ENDIAN_LITTLE_32(x) x

#define ENDIAN_BIG_32(x)    bswap_32(x)

#define ENDIAN_LITTLE_16(x) x

#define ENDIAN_BIG_16(x)    bswap_16(x)

#elif __BIG_ENDIAN__

#define ENDIAN_LITTLE_32(x) bswap_32(x)

#define ENDIAN_BIG_32(x)    x

#define ENDIAN_LITTLE_16(x) bswap_16(x)

#define ENDIAN_BIG_16(x)    x    

#endif

#pragma pack(1)

typedef struct _WAV_header_t {

        uint32_t ChunkID;

        uint32_t ChunkSize;

        uint32_t Format;

        uint32_t Subchunk1ID;

        uint32_t Subchunk1Size;

        uint16_t AudioFormat;

        uint16_t NumChannels;

        uint32_t SampleRate;

        uint32_t ByteRate;

        uint16_t BlockAlign;

        uint16_t BitsPerSample;

        uint32_t Subchunk2ID;

        uint32_t Subchunk2Size;

} WAV_header_t;

#pragma pack()

#pragma pack(1)

typedef struct _SSound_t {

        int source;

        char Filename[256];

        ALuint Buffer;

} SSound_t;

#pragma pack()

#endif