/*
 * Copyright (c) 2015 Andrew Eikum for CodeWeavers
 *
 * This library 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; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

import "unknwn.idl";

#define XAPO_REGISTRATION_STRING_LENGTH 256

cpp_quote("#if 0")
typedef struct WAVEFORMATEX
{
    WORD wFormatTag;
    WORD nChannels;
    DWORD nSamplesPerSec;
    DWORD nAvgBytesPerSec;
    WORD nBlockAlign;
    WORD wBitsPerSample;
    WORD cbSize;
} WAVEFORMATEX;

typedef struct {
    WAVEFORMATEX    Format;
    union {
        WORD        wValidBitsPerSample;
        WORD        wSamplesPerBlock;
        WORD        wReserved;
    } Samples;
    DWORD           dwChannelMask;
    GUID            SubFormat;
} WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
cpp_quote("#else")
cpp_quote("#include <mmreg.h>")
cpp_quote("#endif")

typedef struct XAPO_REGISTRATION_PROPERTIES
{
    CLSID clsid;
    WCHAR FriendlyName[XAPO_REGISTRATION_STRING_LENGTH];
    WCHAR CopyrightInfo[XAPO_REGISTRATION_STRING_LENGTH];
    UINT32 MajorVersion;
    UINT32 MinorVersion;
    UINT32 Flags;
    UINT32 MinInputBufferCount;
    UINT32 MaxInputBufferCount;
    UINT32 MinOutputBufferCount;
    UINT32 MaxOutputBufferCount;
} XAPO_REGISTRATION_PROPERTIES;

typedef struct XAPO20_REGISTRATION_PROPERTIES
{
    CLSID clsid;
    WCHAR FriendlyName[XAPO_REGISTRATION_STRING_LENGTH];
    WCHAR CopyrightInfo[XAPO_REGISTRATION_STRING_LENGTH];
    UINT32 MajorVersion;
    UINT32 MinorVersion;
    UINT32 Flags;
    UINT32 MinInputBufferCount;
    UINT32 MaxInputBufferCount;
    UINT32 MinOutputBufferCount;
    UINT32 MaxOutputBufferCount;
    UINT32 InterfaceCount;
    IID InterfaceArray[1];
} XAPO20_REGISTRATION_PROPERTIES;

typedef struct XAPO_LOCKFORPROCESS_BUFFER_PARAMETERS {
    const WAVEFORMATEX *pFormat;
    UINT32 MaxFrameCount;
} XAPO_LOCKFORPROCESS_BUFFER_PARAMETERS;

typedef enum XAPO_BUFFER_FLAGS {
    XAPO_BUFFER_SILENT,
    XAPO_BUFFER_VALID
} XAPO_BUFFER_FLAGS;

typedef struct XAPO_PROCESS_BUFFER_PARAMETERS {
    void *pBuffer;
    XAPO_BUFFER_FLAGS BufferFlags;
    UINT32 ValidFrameCount;
} XAPO_PROCESS_BUFFER_PARAMETERS;

/* XAudio2 2.8 version of IXAPO */
[
    object,
    local,
    uuid(a410b984-9839-4819-a0be-2856ae6b3adb)
]
interface IXAPO : IUnknown
{
    HRESULT GetRegistrationProperties([out] XAPO_REGISTRATION_PROPERTIES **props);

    HRESULT IsInputFormatSupported(const WAVEFORMATEX *output_fmt,
        const WAVEFORMATEX *input_fmt, WAVEFORMATEX **supported_fmt);

    HRESULT IsOutputFormatSupported(const WAVEFORMATEX *input_fmt,
        const WAVEFORMATEX *output_fmt, WAVEFORMATEX **supported_fmt);

    HRESULT Initialize(const void *data, UINT32 data_len);

    HRESULT Reset(void);

    HRESULT LockForProcess(UINT32 in_params_count, const XAPO_LOCKFORPROCESS_BUFFER_PARAMETERS *in_params,
        UINT32 out_params_count, const XAPO_LOCKFORPROCESS_BUFFER_PARAMETERS *out_params);

    void UnlockForProcess(void);

    void Process(UINT32 in_params_count, const XAPO_PROCESS_BUFFER_PARAMETERS *in_params,
        UINT32 out_params_count, const XAPO_PROCESS_BUFFER_PARAMETERS *out_params,
        BOOL enabled);

    UINT32 CalcInputFrames(UINT32 output_frames);

    UINT32 CalcOutputFrames(UINT32 input_frames);
}

/* XAudio2 2.7 version of IXAPO is identical to 2.8 */
cpp_quote("DEFINE_GUID(IID_IXAPO27, 0xa90bc001, 0xe897, 0xe897, 0x55, 0xe4, 0x9e, 0x47, 0x00, 0x00, 0x00, 0x00);")


/* XAudio2 2.8 version of IXAPOParameters */
[
    object,
    local,
    uuid(26d95c66-80f2-499a-ad54-5ae7f01c6d98)
]
interface IXAPOParameters : IUnknown
{
    void SetParameters(const void *params, UINT32 params_len);

    void GetParameters(void *params, UINT32 params_len);
}

/* XAudio2 2.7 version of IXAPOParameters is identical to 2.8 */
cpp_quote("DEFINE_GUID(IID_IXAPO27Parameters, 0xa90bc001, 0xe897, 0xe897, 0x55, 0xe4, 0x9e, 0x47, 0x00, 0x00, 0x00, 0x01);")