iOS: Add ability to specify audio constraints.

webrtc/sdk/objc/Framework/Classes/RTCMediaSource.mm

 /*
- *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
+ *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import "RTCVideoSource+Private.h"
+#import "RTCMediaSource+Private.h"
 
-@implementation RTCVideoSource {
-  rtc::scoped_refptr<webrtc::VideoTrackSourceInterface> _nativeVideoSource;
+#include "webrtc/base/checks.h"
+
+@implementation RTCMediaSource {
+  RTCMediaSourceType _type;
+}
+
+@synthesize nativeMediaSource = _nativeMediaSource;
+
+- (instancetype)initWithNativeMediaSource:
+   (rtc::scoped_refptr<webrtc::MediaSourceInterface>)nativeMediaSource
+                                     type:(RTCMediaSourceType)type {
+  RTC_DCHECK(nativeMediaSource);
+  if (self = [super init]) {
+    _nativeMediaSource = nativeMediaSource;
+    _type = type;
+  }
+  return self;
 }
 
 - (RTCSourceState)state {
-  return [[self class] sourceStateForNativeState:_nativeVideoSource->state()];
-}
-
-- (NSString *)description {
-  return [NSString stringWithFormat:@"RTCVideoSource:\n%@",
-                                    [[self class] stringForState:self.state]];
+  return [[self class] sourceStateForNativeState:_nativeMediaSource->state()];
 }
 
 #pragma mark - Private
 
-- (rtc::scoped_refptr<webrtc::VideoTrackSourceInterface>)nativeVideoSource {
-  return _nativeVideoSource;
-}
-
-- (instancetype)initWithNativeVideoSource:
-    (rtc::scoped_refptr<webrtc::VideoTrackSourceInterface>)nativeVideoSource {
-  NSParameterAssert(nativeVideoSource);
-  if (self = [super init]) {
-    _nativeVideoSource = nativeVideoSource;
-  }
-  return self;
-}
-
 + (webrtc::MediaSourceInterface::SourceState)nativeSourceStateForState:
     (RTCSourceState)state {
   switch (state) {
     case RTCSourceStateInitializing:
       return webrtc::MediaSourceInterface::kInitializing;
     case RTCSourceStateLive:
       return webrtc::MediaSourceInterface::kLive;
     case RTCSourceStateEnded:
       return webrtc::MediaSourceInterface::kEnded;
     case RTCSourceStateMuted:
@@ skipping 22 matching lines @@
     case RTCSourceStateLive:
       return @"Live";
     case RTCSourceStateEnded:
       return @"Ended";
     case RTCSourceStateMuted:
       return @"Muted";
   }
 }
 
 @end