// ichannelaudiovolume.dart

// THIS FILE IS GENERATED AUTOMATICALLY AND SHOULD NOT BE EDITED DIRECTLY.

// ignore_for_file: unused_import
// ignore_for_file: constant_identifier_names, non_constant_identifier_names
// ignore_for_file: no_leading_underscores_for_local_identifiers

import 'dart:ffi';

import 'package:ffi/ffi.dart';

import '../callbacks.dart';
import '../combase.dart';
import '../constants.dart';
import '../exceptions.dart';
import '../guid.dart';
import '../macros.dart';
import '../propertykey.dart';
import '../structs.g.dart';
import '../utils.dart';
import '../variant.dart';
import '../win32/ole32.g.dart';
import 'iunknown.dart';

/// @nodoc
const IID_IChannelAudioVolume = '{1c158861-b533-4b30-b1cf-e853e51c59b8}';

/// The IChannelAudioVolume interface enables a client to control and
/// monitor the volume levels for all of the channels in the audio session
/// that the stream belongs to. This is the session that the client assigned
/// the stream to during the call to the `IAudioClient::Initialize` method.
/// The client obtains a reference to the [IChannelAudioVolume] interface on
/// a stream object by calling the `IAudioClient::GetService` method with
/// parameter `riid` set to REFIID [IID_IChannelAudioVolume].
///
/// {@category com}
class IChannelAudioVolume extends IUnknown {
  // vtable begins at 3, is 5 entries long.
  IChannelAudioVolume(super.ptr);

  factory IChannelAudioVolume.from(IUnknown interface) =>
      IChannelAudioVolume(interface.toInterface(IID_IChannelAudioVolume));

  int getChannelCount(Pointer<Uint32> pdwCount) =>
      (ptr.ref.vtable + 3)
          .cast<
            Pointer<
              NativeFunction<Int32 Function(Pointer, Pointer<Uint32> pdwCount)>
            >
          >()
          .value
          .asFunction<int Function(Pointer, Pointer<Uint32> pdwCount)>()(
        ptr.ref.lpVtbl,
        pdwCount,
      );

  int setChannelVolume(
    int dwIndex,
    double fLevel,
    Pointer<GUID> EventContext,
  ) => (ptr.ref.vtable + 4)
      .cast<
        Pointer<
          NativeFunction<
            Int32 Function(
              Pointer,
              Uint32 dwIndex,
              Float fLevel,
              Pointer<GUID> EventContext,
            )
          >
        >
      >()
      .value
      .asFunction<
        int Function(
          Pointer,
          int dwIndex,
          double fLevel,
          Pointer<GUID> EventContext,
        )
      >()(ptr.ref.lpVtbl, dwIndex, fLevel, EventContext);

  int getChannelVolume(int dwIndex, Pointer<Float> pfLevel) =>
      (ptr.ref.vtable + 5)
          .cast<
            Pointer<
              NativeFunction<
                Int32 Function(Pointer, Uint32 dwIndex, Pointer<Float> pfLevel)
              >
            >
          >()
          .value
          .asFunction<
            int Function(Pointer, int dwIndex, Pointer<Float> pfLevel)
          >()(ptr.ref.lpVtbl, dwIndex, pfLevel);

  int setAllVolumes(
    int dwCount,
    Pointer<Float> pfVolumes,
    Pointer<GUID> EventContext,
  ) => (ptr.ref.vtable + 6)
      .cast<
        Pointer<
          NativeFunction<
            Int32 Function(
              Pointer,
              Uint32 dwCount,
              Pointer<Float> pfVolumes,
              Pointer<GUID> EventContext,
            )
          >
        >
      >()
      .value
      .asFunction<
        int Function(
          Pointer,
          int dwCount,
          Pointer<Float> pfVolumes,
          Pointer<GUID> EventContext,
        )
      >()(ptr.ref.lpVtbl, dwCount, pfVolumes, EventContext);

  int getAllVolumes(int dwCount, Pointer<Float> pfVolumes) =>
      (ptr.ref.vtable + 7)
          .cast<
            Pointer<
              NativeFunction<
                Int32 Function(
                  Pointer,
                  Uint32 dwCount,
                  Pointer<Float> pfVolumes,
                )
              >
            >
          >()
          .value
          .asFunction<
            int Function(Pointer, int dwCount, Pointer<Float> pfVolumes)
          >()(ptr.ref.lpVtbl, dwCount, pfVolumes);
}
