/*
 * Copyright 2021 Alistair Leslie-Hughes
 *
 * 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";
import "oaidl.idl";

interface IStream;

struct CodecAPIEventData
{
    GUID  guid;
    DWORD dataLength;
    DWORD reserved[3];
};

[
    uuid(901db4c7-31ce-41a2-85dc-8fa0bf41b8da),
    local,
    object,
    pointer_default(unique)
]
interface ICodecAPI : IUnknown
{
    HRESULT IsSupported ([in] const GUID *api);
    HRESULT IsModifiable ([in] const GUID *api);

    HRESULT GetParameterRange ([in] const GUID *api, [out] VARIANT *min, [out] VARIANT *max, [out] VARIANT *delta);
    HRESULT GetParameterValues ([in] const GUID *api, [out, size_is(,*count)] VARIANT **values, [out] ULONG *count);
    HRESULT GetParameterValues ([in] const GUID *api, [out, size_is(,*count)] VARIANT **values, [out] ULONG *count);
    HRESULT GetDefaultValue ([in] const GUID *api, [out] VARIANT *value);

    HRESULT GetValue ([in] const GUID *api, [out] VARIANT *value);
    HRESULT SetValue ([in] const GUID *api, [in] VARIANT *value);

    HRESULT RegisterForEvent ([in] const GUID *api, [in] LONG_PTR userData);
    HRESULT UnregisterForEvent ([in] const GUID *api);

    HRESULT SetAllDefaults(void);

    HRESULT SetValueWithNotify ([in] const GUID *api, [in] VARIANT *value, [out, size_is(,*count)] GUID **param, [out] ULONG *count);

    HRESULT SetAllDefaultsWithNotify([out, size_is(,*count)] GUID **param, [out] ULONG *count);

    HRESULT GetAllSettings([in] IStream *stream);
    HRESULT SetAllSettings([in] IStream *stream);

    HRESULT SetAllSettingsWithNotify([in] IStream* stream, [out, size_is(,*count)] GUID **param, [out] ULONG *count);
}