src/Tizen.Multimedia.Recorder/Interop/Interop.Recorder.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18 using System.Runtime.InteropServices;
  19 using Tizen.Multimedia;
  20
  21 internal static partial class Interop
  22 {
  23     internal static partial class Recorder
  24     {
  25         [DllImport(Libraries.Recorder, EntryPoint = "recorder_create_audiorecorder")]
  26         internal static extern RecorderErrorCode Create(out RecorderHandle handle);
  27
  28         [DllImport(Libraries.Recorder, EntryPoint = "recorder_create_videorecorder")]
  29         internal static extern RecorderErrorCode CreateVideo(IntPtr cameraHandle, out RecorderHandle handle);
  30
  31         [DllImport(Libraries.Recorder, EntryPoint = "recorder_prepare")]
  32         internal static extern RecorderErrorCode Prepare(RecorderHandle handle);
  33
  34         [DllImport(Libraries.Recorder, EntryPoint = "recorder_unprepare")]
  35         internal static extern RecorderErrorCode Unprepare(RecorderHandle handle);
  36
  37         [DllImport(Libraries.Recorder, EntryPoint = "recorder_start")]
  38         internal static extern RecorderErrorCode Start(RecorderHandle handle);
  39
  40         [DllImport(Libraries.Recorder, EntryPoint = "recorder_pause")]
  41         internal static extern RecorderErrorCode Pause(RecorderHandle handle);
  42
  43         [DllImport(Libraries.Recorder, EntryPoint = "recorder_commit")]
  44         internal static extern RecorderErrorCode Commit(RecorderHandle handle);
  45
  46         [DllImport(Libraries.Recorder, EntryPoint = "recorder_cancel")]
  47         internal static extern RecorderErrorCode Cancel(RecorderHandle handle);
  48
  49         [DllImport(Libraries.Recorder, EntryPoint = "recorder_get_state")]
  50         internal static extern RecorderErrorCode GetState(RecorderHandle handle, out RecorderState state);
  51
  52         [DllImport(Libraries.Recorder, EntryPoint = "recorder_set_sound_stream_info")]
  53         internal static extern RecorderErrorCode SetAudioStreamPolicy(RecorderHandle handle, AudioStreamPolicyHandle streamInfoHandle);
  54
  55         [DllImport(Libraries.Recorder, EntryPoint = "recorder_get_device_state")]
  56         internal static extern RecorderErrorCode GetDeviceState(RecorderType type, out RecorderDeviceState state);
  57     }
  58
  59     internal class RecorderHandle : SafeHandle
  60     {
  61         [DllImport(Libraries.Recorder, EntryPoint = "recorder_destroy")]
  62         private static extern RecorderErrorCode Destroy(IntPtr handle);
  63
  64         [DllImport(Libraries.Recorder, EntryPoint = "recorder_cancel")]
  65         private static extern RecorderErrorCode Cancel(IntPtr handle);
  66
  67         [DllImport(Libraries.Recorder, EntryPoint = "recorder_unprepare")]
  68         private static extern RecorderErrorCode Unprepare(IntPtr handle);
  69
  70         protected RecorderHandle() : base(IntPtr.Zero, true)
  71         {
  72         }
  73
  74         public override bool IsInvalid => handle == IntPtr.Zero;
  75
  76         protected override bool ReleaseHandle()
  77         {
  78             Cancel(handle).Ignore(RecorderErrorCode.InvalidState).ThrowIfError("Failed to cancel");
  79             Unprepare(handle).Ignore(RecorderErrorCode.InvalidState).ThrowIfError("Failed to unprepare");
  80
  81             var ret = Destroy(handle);
  82             if (ret != RecorderErrorCode.None)
  83             {
  84                 Tizen.Log.Debug(GetType().FullName, $"Failed to release native RecorderHandle.");
  85
  86                 return false;
  87             }
  88             return true;
  89         }
  90     }
  91 }