////////////////////////////////
//~ Win32 headers

#pragma warning(push, 0)
# define COBJMACROS
# define WIN32_LEAN_AND_MEAN
# define UNICODE
# include <Windows.h>
# include <initguid.h>
# include <objbase.h>
# include <uuids.h>
# include <Audioclient.h>
# include <mmdeviceapi.h>
#pragma warning(pop)

DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xbcde0395, 0xe52f, 0x467c, 0x8e, 0x3d, 0xc4, 0x57, 0x92, 0x91, 0x69, 0x2e);
DEFINE_GUID(IID_IMMDeviceEnumerator,  0xa95664d2, 0x9614, 0x4f35, 0xa7, 0x46, 0xde, 0x8d, 0xb6, 0x36, 0x17, 0xe6);
DEFINE_GUID(IID_IAudioClient,         0x1cb9ad4c, 0xdbfa, 0x4c32, 0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x03, 0xb2);
DEFINE_GUID(IID_IAudioClient3,        0x7ed4ee07, 0x8e67, 0x4cd4, 0x8c, 0x1a, 0x2b, 0x7a, 0x59, 0x87, 0xad, 0x42);
DEFINE_GUID(IID_IAudioRenderClient,   0xf294acfc, 0x3146, 0x4483, 0xa7, 0xbf, 0xad, 0xdc, 0xa7, 0xc2, 0x60, 0xe2);

////////////////////////////////
//~ Wasapi buffer types

Struct(PB_WSP_Buff)
{
    u32 frames_count;
    u8 *frames;
};

////////////////////////////////
//~ Shared state

Struct(PB_WSP_SharedState)
{
    Atomic32 shutdown;
    IAudioClient *client;
    HANDLE event;
    IAudioRenderClient *playback;
    WAVEFORMATEX *buffer_format;
    u32 buffer_frames;
    Counter PB_WSP_PlaybackJob_counter;
};

extern PB_WSP_SharedState PB_WSP_shared_state;

////////////////////////////////
//~ Wasapi startup

void PB_WSP_InitializeWasapi(void);
P_ExitFuncDef(PB_WSP_Shutdown);

////////////////////////////////
//~ Playback update

PB_WSP_Buff PB_WSP_BeginUpdate(void);
void PB_WSP_EndUpdate(PB_WSP_Buff *wspbuf, MIX_PcmF32 src);

////////////////////////////////
//~ Playback job

JobDecl(PB_WSP_PlaybackJob, EmptySig);