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 

    21 #ifndef _COMMON_H

    22 #define _COMMON_H

    23 

    24 #include <stdio.h>

    25 #include <stdlib.h>

    26 #include <stdint.h>

    27 #include <string.h>

    28 #include <stdarg.h>

    29 #include <errno.h>

    30 #include "al.h"

    31 #include "errlib.h"

    32 

    33 #ifndef _WIN32

    34 #include <pthread.h>

    35 #include <syslog.h>

    36 #else

    37 #include <process.h>

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

    39 #define LOG_INFO 6

    40 #define LOG_ERR 3

    41 #endif

    42 

    43 

    44 /* magics */

    45 #define OGG_FILE_FORMAT 0x4F676753

    46 #define WAV_FILE_FORMAT 0x52494646

    47 #define WAV_HEADER_SUBCHUNK2ID 0x64617461

    48 

    49 /* max allocations */

    50 #define MAX_SOUNDS 1024

    51 #define MAX_SOURCES 16

    52 

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

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

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

    56 #define __LITTLE_ENDIAN__ 1

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

    58 #endif

    59 

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

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

    62 #ifdef HAVE_BYTESWAP_H

    63 #include <byteswap.h>

    64 #else        

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

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

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

    68 #endif /* HAVE_BYTESWAP_H */

    69 

    70 /* swap numbers accordingly to architecture automatically */

    71 #ifdef __LITTLE_ENDIAN__

    72 #define ENDIAN_LITTLE_32(x) x

    73 #define ENDIAN_BIG_32(x)    bswap_32(x)

    74 #define ENDIAN_LITTLE_16(x) x

    75 #define ENDIAN_BIG_16(x)    bswap_16(x)

    76 #elif __BIG_ENDIAN__

    77 #define ENDIAN_LITTLE_32(x) bswap_32(x)

    78 #define ENDIAN_BIG_32(x)    x

    79 #define ENDIAN_LITTLE_16(x) bswap_16(x)

    80 #define ENDIAN_BIG_16(x)    x    

    81 #endif

    82 

    83 /** 1.0 02/03/10 - Defines cross-platform sleep, usleep, etc. [Wu Yongwei] **/

    84 #ifndef _SLEEP_H

    85 #define _SLEEP_H

    86 #ifdef _WIN32

    87 # if defined(_NEED_SLEEP_ONLY) && (defined(_MSC_VER) || defined(__MINGW32__))

    88 #  include <stdlib.h>

    89 #  define sleep(t) _sleep((t) * 1000)

    90 # else

    91 #  define WIN32_LEAN_AND_MEAN

    92 #  include <windows.h>

    93 #  define sleep(t)  Sleep((t) * 1000)

    94 # endif

    95 # ifndef _NEED_SLEEP_ONLY

    96 #  define msleep(t) Sleep(t)

    97 #  define usleep(t) Sleep((t) / 1000)

    98 # endif

    99 #else

   100 # include <unistd.h>

   101 # ifndef _NEED_SLEEP_ONLY

   102 #  define msleep(t) usleep((t) * 1000)

   103 # endif

   104 #endif

   105 #endif /* _SLEEP_H */

   106 

   107 #pragma pack(1)

   108 typedef struct _WAV_header_t {

   109         uint32_t ChunkID;

   110         uint32_t ChunkSize;

   111         uint32_t Format;

   112         uint32_t Subchunk1ID;

   113         uint32_t Subchunk1Size;

   114         uint16_t AudioFormat;

   115         uint16_t NumChannels;

   116         uint32_t SampleRate;

   117         uint32_t ByteRate;

   118         uint16_t BlockAlign;

   119         uint16_t BitsPerSample;

   120         uint32_t Subchunk2ID;

   121         uint32_t Subchunk2Size;

   122 } WAV_header_t;

   123 #pragma pack()

   124 

   125 #pragma pack(1)

   126 typedef struct _SSound_t {

   127         int isLoaded;

   128         int sourceIndex;

   129         char *filename;

   130         ALuint Buffer;

   131 } SSound_t;

   132 #pragma pack()

   133 

   134 /*data type for passing data between threads*/

   135 #pragma pack(1)

   136 typedef struct _fade_t {

   137         uint32_t index;

   138         uint16_t quantity;

   139 } fade_t;

   140 #pragma pack()

   141 

   142 #define FADE_IN  0

   143 #define FADE_OUT 1

   144 

   145 #endif /* _COMMON_H*/