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#ifndef _SDL_audio_h
#define _SDL_audio_h
#include "SDL_stdinc.h"
#include "SDL_error.h"
#include "SDL_endian.h"
#include "SDL_mutex.h"
#include "SDL_thread.h"
#include "SDL_rwops.h"
#include "begin_code.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef Uint16 SDL_AudioFormat;
#define SDL_AUDIO_MASK_BITSIZE (0xFF)
#define SDL_AUDIO_MASK_DATATYPE (1<<8)
#define SDL_AUDIO_MASK_ENDIAN (1<<12)
#define SDL_AUDIO_MASK_SIGNED (1<<15)
#define SDL_AUDIO_BITSIZE(x) (x & SDL_AUDIO_MASK_BITSIZE)
#define SDL_AUDIO_ISFLOAT(x) (x & SDL_AUDIO_MASK_DATATYPE)
#define SDL_AUDIO_ISBIGENDIAN(x) (x & SDL_AUDIO_MASK_ENDIAN)
#define SDL_AUDIO_ISSIGNED(x) (x & SDL_AUDIO_MASK_SIGNED)
#define SDL_AUDIO_ISINT(x) (!SDL_AUDIO_ISFLOAT(x))
#define SDL_AUDIO_ISLITTLEENDIAN(x) (!SDL_AUDIO_ISBIGENDIAN(x))
#define SDL_AUDIO_ISUNSIGNED(x) (!SDL_AUDIO_ISSIGNED(x))
#define AUDIO_U8 0x0008
#define AUDIO_S8 0x8008
#define AUDIO_U16LSB 0x0010
#define AUDIO_S16LSB 0x8010
#define AUDIO_U16MSB 0x1010
#define AUDIO_S16MSB 0x9010
#define AUDIO_U16 AUDIO_U16LSB
#define AUDIO_S16 AUDIO_S16LSB
#define AUDIO_S32LSB 0x8020
#define AUDIO_S32MSB 0x9020
#define AUDIO_S32 AUDIO_S32LSB
#define AUDIO_F32LSB 0x8120
#define AUDIO_F32MSB 0x9120
#define AUDIO_F32 AUDIO_F32LSB
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
#define AUDIO_U16SYS AUDIO_U16LSB
#define AUDIO_S16SYS AUDIO_S16LSB
#define AUDIO_S32SYS AUDIO_S32LSB
#define AUDIO_F32SYS AUDIO_F32LSB
#else
#define AUDIO_U16SYS AUDIO_U16MSB
#define AUDIO_S16SYS AUDIO_S16MSB
#define AUDIO_S32SYS AUDIO_S32MSB
#define AUDIO_F32SYS AUDIO_F32MSB
#endif
#define SDL_AUDIO_ALLOW_FREQUENCY_CHANGE 0x00000001
#define SDL_AUDIO_ALLOW_FORMAT_CHANGE 0x00000002
#define SDL_AUDIO_ALLOW_CHANNELS_CHANGE 0x00000004
#define SDL_AUDIO_ALLOW_ANY_CHANGE (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE)
typedef void (SDLCALL * SDL_AudioCallback) (void *userdata, Uint8 * stream,
int len);
typedef struct SDL_AudioSpec
{
int freq;
SDL_AudioFormat format;
Uint8 channels;
Uint8 silence;
Uint16 samples;
Uint16 padding;
Uint32 size;
SDL_AudioCallback callback;
void *userdata;
} SDL_AudioSpec;
struct SDL_AudioCVT;
typedef void (SDLCALL * SDL_AudioFilter) (struct SDL_AudioCVT * cvt,
SDL_AudioFormat format);
#ifdef __GNUC__
#define SDL_AUDIOCVT_PACKED __attribute__((packed))
#else
#define SDL_AUDIOCVT_PACKED
#endif
typedef struct SDL_AudioCVT
{
int needed;
SDL_AudioFormat src_format;
SDL_AudioFormat dst_format;
double rate_incr;
Uint8 *buf;
int len;
int len_cvt;
int len_mult;
double len_ratio;
SDL_AudioFilter filters[10];
int filter_index;
} SDL_AUDIOCVT_PACKED SDL_AudioCVT;
typedef int SDLCALL tSDL_GetNumAudioDrivers(void);
typedef const char * SDLCALL tSDL_GetAudioDriver(int index);
typedef int SDLCALL tSDL_AudioInit(const char *driver_name);
typedef void SDLCALL tSDL_AudioQuit(void);
typedef const char * SDLCALL tSDL_GetCurrentAudioDriver(void);
typedef int SDLCALL tSDL_OpenAudio(SDL_AudioSpec * desired,
SDL_AudioSpec * obtained);
typedef Uint32 SDL_AudioDeviceID;
typedef int SDLCALL tSDL_GetNumAudioDevices(int iscapture);
typedef const char * SDLCALL tSDL_GetAudioDeviceName(int index,
int iscapture);
typedef SDL_AudioDeviceID SDLCALL tSDL_OpenAudioDevice(const char
*device,
int iscapture,
const
SDL_AudioSpec *
desired,
SDL_AudioSpec *
obtained,
int
allowed_changes);
typedef enum
{
SDL_AUDIO_STOPPED = 0,
SDL_AUDIO_PLAYING,
SDL_AUDIO_PAUSED
} SDL_AudioStatus;
typedef SDL_AudioStatus SDLCALL tSDL_GetAudioStatus(void);
extern DECLSPEC SDL_AudioStatus SDLCALL
SDL_GetAudioDeviceStatus(SDL_AudioDeviceID dev);
typedef void SDLCALL tSDL_PauseAudio(int pause_on);
typedef void SDLCALL tSDL_PauseAudioDevice(SDL_AudioDeviceID dev,
int pause_on);
typedef SDL_AudioSpec * SDLCALL tSDL_LoadWAV_RW(SDL_RWops * src,
int freesrc,
SDL_AudioSpec * spec,
Uint8 ** audio_buf,
Uint32 * audio_len);
#define SDL_LoadWAV(file, spec, audio_buf, audio_len) \
SDL_LoadWAV_RW(SDL_RWFromFile(file, "rb"),1, spec,audio_buf,audio_len)
typedef void SDLCALL tSDL_FreeWAV(Uint8 * audio_buf);
typedef int SDLCALL tSDL_BuildAudioCVT(SDL_AudioCVT * cvt,
SDL_AudioFormat src_format,
Uint8 src_channels,
int src_rate,
SDL_AudioFormat dst_format,
Uint8 dst_channels,
int dst_rate);
typedef int SDLCALL tSDL_ConvertAudio(SDL_AudioCVT * cvt);
#define SDL_MIX_MAXVOLUME 128
typedef void SDLCALL tSDL_MixAudio(Uint8 * dst, const Uint8 * src,
Uint32 len, int volume);
typedef void SDLCALL tSDL_MixAudioFormat(Uint8 * dst,
const Uint8 * src,
SDL_AudioFormat format,
Uint32 len, int volume);
typedef void SDLCALL tSDL_LockAudio(void);
typedef void SDLCALL tSDL_LockAudioDevice(SDL_AudioDeviceID dev);
typedef void SDLCALL tSDL_UnlockAudio(void);
typedef void SDLCALL tSDL_UnlockAudioDevice(SDL_AudioDeviceID dev);
typedef void SDLCALL tSDL_CloseAudio(void);
typedef void SDLCALL tSDL_CloseAudioDevice(SDL_AudioDeviceID dev);
extern tSDL_GetNumAudioDrivers *SDL_GetNumAudioDrivers;
extern tSDL_GetAudioDriver *SDL_GetAudioDriver;
extern tSDL_AudioInit *SDL_AudioInit;
extern tSDL_AudioQuit *SDL_AudioQuit;
extern tSDL_GetCurrentAudioDriver *SDL_GetCurrentAudioDriver;
extern tSDL_OpenAudio *SDL_OpenAudio;
extern tSDL_GetNumAudioDevices *SDL_GetNumAudioDevices;
extern tSDL_GetAudioDeviceName *SDL_GetAudioDeviceName;
extern tSDL_OpenAudioDevice *SDL_OpenAudioDevice;
extern tSDL_GetAudioStatus *SDL_GetAudioStatus;
extern tSDL_PauseAudio *SDL_PauseAudio;
extern tSDL_PauseAudioDevice *SDL_PauseAudioDevice;
extern tSDL_LoadWAV_RW *SDL_LoadWAV_RW;
extern tSDL_FreeWAV *SDL_FreeWAV;
extern tSDL_BuildAudioCVT *SDL_BuildAudioCVT;
extern tSDL_ConvertAudio *SDL_ConvertAudio;
extern tSDL_MixAudio *SDL_MixAudio;
extern tSDL_MixAudioFormat *SDL_MixAudioFormat;
extern tSDL_LockAudio *SDL_LockAudio;
extern tSDL_LockAudioDevice *SDL_LockAudioDevice;
extern tSDL_UnlockAudio *SDL_UnlockAudio;
extern tSDL_UnlockAudioDevice *SDL_UnlockAudioDevice;
extern tSDL_CloseAudio *SDL_CloseAudio;
extern tSDL_CloseAudioDevice *SDL_CloseAudioDevice;
#ifdef __cplusplus
}
#endif
#include "close_code.h"
#endif
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