/
ScreenMirroring.cs
543 lines (466 loc) · 19.5 KB
/
ScreenMirroring.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
/*
* Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Native = Interop.ScreenMirroring;
namespace Tizen.Multimedia.Remoting
{
/// <summary>
/// Provides the ability to connect to and disconnect from a screen mirroring source,
/// start, pause, and resume the screen mirroring as a sink.
/// </summary>
/// <since_tizen> 4 </since_tizen>
public class ScreenMirroring : IDisposable, IDisplayable<ScreenMirroringErrorCode>
{
private const string Feature = "http://tizen.org/feature/network.wifi.direct.display";
private const int Port = 2022;
private IntPtr _handle;
private AtomicState _state;
private bool _disposed = false;
internal IntPtr Handle
{
get
{
ThrowIfDisposed();
return _handle;
}
}
private static bool IsSupported()
{
return System.Information.TryGetValue(Feature, out bool isSupported) ? isSupported : false;
}
/// <summary>
/// Initializes a new instance of the ScreenMirroring class.
/// </summary>
/// <feature>http://tizen.org/feature/network.wifi.direct.display</feature>
/// <exception cref="NotSupportedException">The feature is not supported.</exception>
/// <since_tizen> 4 </since_tizen>
public ScreenMirroring()
{
if (IsSupported() == false)
{
throw new PlatformNotSupportedException(
$"The feature({Feature}) is not supported on the current device.");
}
Native.Create(out _handle).ThrowIfError("Failed to create ScreenMirroring.");
_state = new AtomicState();
AudioInfo = new ScreenMirroringAudioInfo(this);
VideoInfo = new ScreenMirroringVideoInfo(this);
RegisterStateChangedEvent();
}
/// <summary>
/// Finalizes an instance of the ScreenMirroring class.
/// </summary>
~ScreenMirroring()
{
Dispose(false);
}
/// <summary>
/// Occurs when the state is changed.
/// </summary>
/// <since_tizen> 4 </since_tizen>
public event EventHandler<ScreenMirroringStateChangedEventArgs> StateChanged;
/// <summary>
/// Occurs when an error occurs.
/// </summary>
/// <since_tizen> 4 </since_tizen>
public event EventHandler<ScreenMirroringErrorOccurredEventArgs> ErrorOccurred;
#region Display support
private Display _display;
private void DetachDisplay()
{
if (_display != null)
{
_display.SetOwner(null);
_display = null;
}
}
private void SetDisplay(Display display)
{
if (display == null)
{
throw new ArgumentNullException(nameof(Display));
}
display.SetOwner(this);
display.ApplyTo(this).ThrowIfError("Failed to set display.");
_display = display;
}
ScreenMirroringErrorCode IDisplayable<ScreenMirroringErrorCode>.ApplyEvasDisplay(DisplayType type,
ElmSharp.EvasObject evasObject)
{
Debug.Assert(Enum.IsDefined(typeof(DisplayType), type));
return Native.SetDisplay(Handle, (int)type, evasObject);
}
ScreenMirroringErrorCode IDisplayable<ScreenMirroringErrorCode>.ApplyEcoreWindow(IntPtr windowHandle)
{
throw new NotSupportedException("ScreenMirroring does not support NUI.Window display.");
}
#endregion
/// <summary>
/// Gets the negotiated audio info.
/// </summary>
/// <since_tizen> 4 </since_tizen>
public ScreenMirroringAudioInfo AudioInfo { get; }
/// <summary>
/// Gets the negotiated video info.
/// </summary>
/// <since_tizen> 4 </since_tizen>
public ScreenMirroringVideoInfo VideoInfo { get; }
private bool IsConnected
{
get
{
return _state.IsOneOf(ScreenMirroringState.Connected, ScreenMirroringState.Playing,
ScreenMirroringState.Paused);
}
}
internal void ThrowIfNotConnected()
{
ThrowIfDisposed();
if (IsConnected == false)
{
throw new InvalidOperationException("ScreenMirroring is not connected.");
}
}
/// <summary>
/// Prepares the screen mirroring with the specified display.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Idle"/>.<br/>
/// <br/>
/// All supported resolutions will be candidates.
/// </remarks>
/// <param name="display">The display where the mirroring will be played on.</param>
/// <exception cref="ArgumentException">
/// <paramref name="display"/> has already been assigned to another.
/// </exception>
/// <exception cref="ArgumentNullException"><paramref name="display"/> is null.</exception>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <since_tizen> 4 </since_tizen>
public void Prepare(Display display)
{
PrepareCore(display, (ScreenMirroringResolutions)0);
}
/// <summary>
/// Prepares the screen mirroring with the specified display and resolutions.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Idle"/>.
/// </remarks>
/// <param name="display">The display where the mirroring will be played on.</param>
/// <param name="resolutions">The desired resolutions.</param>
/// <exception cref="ArgumentException">
/// <paramref name="resolutions"/> contain invalid flags.<br/>
/// -or-<br/>
/// <paramref name="display"/> has already been assigned to another.
/// </exception>
/// <exception cref="ArgumentNullException"><paramref name="display"/> is null.</exception>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <since_tizen> 4 </since_tizen>
public void Prepare(Display display, ScreenMirroringResolutions resolutions)
{
ValidationUtil.ValidateFlagsEnum(resolutions, (ScreenMirroringResolutions)((1 << 7) - 1), nameof(resolutions));
PrepareCore(display, resolutions);
}
private void PrepareCore(Display display, ScreenMirroringResolutions resolutions)
{
ValidateState(ScreenMirroringState.Idle);
Native.SetResolution(Handle, resolutions).ThrowIfError("Failed to set resolutions.");
try
{
SetDisplay(display);
Native.Prepare(Handle).ThrowIfError("Failed to prepare.");
}
catch
{
DetachDisplay();
throw;
}
}
private Task RunAsync(Func<IntPtr, ScreenMirroringErrorCode> func, string failMessage)
{
var tcs = new TaskCompletionSource<bool>();
Task.Run(() =>
{
var ret = func(Handle);
if (ret == ScreenMirroringErrorCode.None)
{
tcs.SetResult(true);
}
else
{
tcs.SetException(ret.AsException(failMessage));
}
});
return tcs.Task;
}
/// <summary>
/// Creates the connection and ready for receiving data from a mirroring source.
/// </summary>
/// <param name="sourceIp">The source ip address to connect.</param>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Prepared"/> state by
/// <see cref="Prepare(Display, ScreenMirroringResolutions)"/>.
/// </remarks>
/// <returns>A task that represents the asynchronous operation.</returns>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <exception cref="ArgumentNullException"><paramref name="sourceIp"/> is null.</exception>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ArgumentException"><paramref name="sourceIp"/> is a zero-length string, contains only white space.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <exception cref="UnauthorizedAccessException">Caller does not have required permission.</exception>
/// <since_tizen> 4 </since_tizen>
public Task ConnectAsync(string sourceIp)
{
if (sourceIp == null)
{
throw new ArgumentNullException(nameof(sourceIp));
}
if (string.IsNullOrWhiteSpace(sourceIp))
{
throw new ArgumentException($"{nameof(sourceIp)} is a zero-length string.", nameof(sourceIp));
}
ValidateState(ScreenMirroringState.Prepared);
Native.SetIpAndPort(Handle, sourceIp, Port.ToString()).ThrowIfError("Failed to set ip.");
return RunAsync(Native.Connect, "Failed to connect.");
}
/// <summary>
/// Starts mirroring from the source.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Connected"/> state by
/// <see cref="ConnectAsync(string)"/>.
/// </remarks>
/// <returns>A task that represents the asynchronous operation.</returns>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <exception cref="UnauthorizedAccessException">Caller does not have required permission.</exception>
/// <since_tizen> 4 </since_tizen>
public Task StartAsync()
{
ValidateState(ScreenMirroringState.Connected);
return RunAsync(Native.Start, "Failed to start.");
}
/// <summary>
/// Pauses mirroring from the source.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Playing"/> state by
/// <see cref="StartAsync"/>.
/// </remarks>
/// <returns>A task that represents the asynchronous operation.</returns>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <exception cref="UnauthorizedAccessException">Caller does not have required permission.</exception>
/// <since_tizen> 4 </since_tizen>
public Task PauseAsync()
{
ValidateState(ScreenMirroringState.Playing);
return RunAsync(Native.Pause, "Failed to pause.");
}
/// <summary>
/// Resumes mirroring from the source.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Paused"/> state by
/// <see cref="PauseAsync"/>.
/// </remarks>
/// <returns>A task that represents the asynchronous operation.</returns>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <exception cref="UnauthorizedAccessException">Caller does not have required permission.</exception>
/// <since_tizen> 4 </since_tizen>
public Task ResumeAsync()
{
ValidateState(ScreenMirroringState.Paused);
return RunAsync(Native.Resume, "Failed to resume.");
}
/// <summary>
/// Disconnects from the source.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Connected"/>,
/// <see cref="ScreenMirroringState.Playing"/> or <see cref="ScreenMirroringState.Paused"/>.
/// </remarks>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <exception cref="UnauthorizedAccessException">Caller does not have required permission.</exception>
/// <since_tizen> 4 </since_tizen>
public void Disconnect()
{
ValidateState(ScreenMirroringState.Connected, ScreenMirroringState.Playing,
ScreenMirroringState.Paused);
Native.Disconnect(Handle).ThrowIfError("Failed to disconnect.");
}
/// <summary>
/// Unprepares the screen mirroring.
/// </summary>
/// <remarks>
/// The state must be <see cref="ScreenMirroringState.Prepared"/>,
/// or <see cref="ScreenMirroringState.Disconnected"/>.
/// </remarks>
/// <exception cref="InvalidOperationException">
/// The current state is not in the valid.<br/>
/// -or-<br/>
/// An internal error occurs.
/// </exception>
/// <exception cref="ObjectDisposedException">The <see cref="ScreenMirroring"/> has already been disposed.</exception>
/// <since_tizen> 4 </since_tizen>
public void Unprepare()
{
ValidateState(ScreenMirroringState.Prepared, ScreenMirroringState.Disconnected);
Native.Unprepare(Handle).ThrowIfError("Failed to reset.");
DetachDisplay();
}
private void ThrowIfDisposed()
{
if (_disposed)
{
throw new ObjectDisposedException(nameof(ScreenMirroring));
}
}
/// <summary>
/// Releases all resource used by the <see cref="ScreenMirroring"/> object.
/// </summary>
/// <remarks>
/// Call <see cref="Dispose()"/> when you are finished using the <see cref="ScreenMirroring"/>.
/// The <see cref="Dispose()"/> method leaves the <see cref="ScreenMirroring"/> in an unusable
/// state. After calling <see cref="Dispose()"/>, you must release all references to the
/// <see cref="ScreenMirroring"/> so the garbage collector can reclaim the memory that the
/// <see cref="ScreenMirroring"/> was occupying.
/// </remarks>
/// <since_tizen> 4 </since_tizen>
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Releases the resources used by the ScreenMirroring.
/// </summary>
/// <param name="disposing">
/// true to release both managed and unmanaged resources; false to release only unmanaged resources.
/// </param>
/// <since_tizen> 4 </since_tizen>
protected virtual void Dispose(bool disposing)
{
if (!_disposed)
{
DetachDisplay();
if (_handle != IntPtr.Zero)
{
Native.Destroy(_handle);
_handle = IntPtr.Zero;
}
_disposed = true;
}
}
private Native.StateChangedCallback _stateChangedCallback;
private void RegisterStateChangedEvent()
{
_stateChangedCallback = (error, state, _) =>
{
var prevState = _state.Value;
_state.Value = state;
if (prevState != state)
{
StateChanged?.Invoke(this, new ScreenMirroringStateChangedEventArgs(state));
}
if (error != ScreenMirroringErrorCode.None)
{
ErrorOccurred?.Invoke(this, new ScreenMirroringErrorOccurredEventArgs(
ScreenMirroringError.InvalidOperation));
}
};
Native.SetStateChangedCb(Handle, _stateChangedCallback).
ThrowIfError("Failed to initialize StateChanged event.");
}
private void ValidateState(params ScreenMirroringState[] required)
{
Debug.Assert(required.Length > 0);
if (_disposed)
{
throw new ObjectDisposedException(nameof(ScreenMirroring));
}
var curState = _state.Value;
if (!required.Contains(curState))
{
throw new InvalidOperationException($"The screen mirroring is not in a valid state. " +
$"Current State : { curState }, Valid State : { string.Join(", ", required) }.");
}
}
}
internal class AtomicState
{
private int _value;
public AtomicState()
{
_value = (int)ScreenMirroringState.Idle;
}
public ScreenMirroringState Value
{
get
{
return (ScreenMirroringState)Interlocked.CompareExchange(ref _value, 0, 0);
}
set
{
Interlocked.Exchange(ref _value, (int)value);
}
}
public bool IsOneOf(params ScreenMirroringState[] states)
{
return states.Contains(Value);
}
}
}