1 /*

     2  * OpenAL Bridge - a simple portable library for OpenAL interface

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

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

     5  *

     6  * This program is free software; you can redistribute it and/or modify

     7  * it under the terms of the GNU Lesser General Public License as published by

     8  * the Free Software Foundation; version 2 of the License

     9  *

    10  * This program is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  * GNU Lesser General Public License for more details.

    14  *

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

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

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

    18  */

    19 

    20 #ifndef COMMON_H

    21 #define COMMON_H

    22 

    23 #include <stdio.h>

    24 #include <stdlib.h>

    25 #include <stdint.h>

    26 #include <string.h>

    27 #include <stdarg.h>

    28 #include <errno.h>

    29 #include "al.h"

    30 #include "errlib.h"

    31 

    32 #ifndef _WIN32

    33 #include <pthread.h>

    34 #include <syslog.h>

    35 #else

    36 #include <process.h>

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

    38 #define LOG_INFO 6

    39 #define LOG_ERR 3

    40 #endif

    41 

    42 /* magics */

    43 #define OGG_FILE_FORMAT 0x4F676753

    44 #define WAV_FILE_FORMAT 0x52494646

    45 #define WAV_HEADER_SUBCHUNK2ID 0x64617461

    46 

    47 #define MAX_SOUNDS 1024

    48 #define MAX_SOURCES 16

    49 

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

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

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

    53 #define __LITTLE_ENDIAN__ 1

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

    55 #endif

    56 

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

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

    59 #ifdef HAVE_BYTESWAP_H

    60 #include <byteswap.h>

    61 #else        

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

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

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

    65 #endif /* HAVE_BYTESWAP_H */

    66 

    67 /* swap numbers accordingly to architecture automatically */

    68 #ifdef __LITTLE_ENDIAN__

    69 #define ENDIAN_LITTLE_32(x) x

    70 #define ENDIAN_BIG_32(x)    bswap_32(x)

    71 #define ENDIAN_LITTLE_16(x) x

    72 #define ENDIAN_BIG_16(x)    bswap_16(x)

    73 #elif __BIG_ENDIAN__

    74 #define ENDIAN_LITTLE_32(x) bswap_32(x)

    75 #define ENDIAN_BIG_32(x)    x

    76 #define ENDIAN_LITTLE_16(x) bswap_16(x)

    77 #define ENDIAN_BIG_16(x)    x    

    78 #endif

    79 

    80 #pragma pack(1)

    81 typedef struct _WAV_header_t {

    82         uint32_t ChunkID;

    83         uint32_t ChunkSize;

    84         uint32_t Format;

    85         uint32_t Subchunk1ID;

    86         uint32_t Subchunk1Size;

    87         uint16_t AudioFormat;

    88         uint16_t NumChannels;

    89         uint32_t SampleRate;

    90         uint32_t ByteRate;

    91         uint16_t BlockAlign;

    92         uint16_t BitsPerSample;

    93         uint32_t Subchunk2ID;

    94         uint32_t Subchunk2Size;

    95 } WAV_header_t;

    96 #pragma pack()

    97 

    98 #pragma pack(1)

    99 typedef struct _SSound_t {

   100         int source;

   101         char Filename[256];

   102         ALuint Buffer;

   103 } SSound_t;

   104 #pragma pack()

   105 

   106 #endif

   107