iOS: Add ability to specify audio constraints.

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

Index: webrtc/sdk/objc/Framework/Classes/RTCMediaSource.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCVideoSource.mm b/webrtc/sdk/objc/Framework/Classes/RTCMediaSource.mm
similarity index 69%
copy from webrtc/sdk/objc/Framework/Classes/RTCVideoSource.mm
copy to webrtc/sdk/objc/Framework/Classes/RTCMediaSource.mm
index eddf5e0c684d7ad51a0d0360053d700fc0942b00..996563b6506764e560e2a9fe4a6ccd0e5d77521b 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCVideoSource.mm
+++ b/webrtc/sdk/objc/Framework/Classes/RTCMediaSource.mm
@@ -1,5 +1,5 @@
 /*
- *  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
@@ -8,36 +8,33 @@
  *  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;
-}
-
-- (RTCSourceState)state {
-  return [[self class] sourceStateForNativeState:_nativeVideoSource->state()];
-}
+#include "webrtc/base/checks.h"
 
-- (NSString *)description {
-  return [NSString stringWithFormat:@"RTCVideoSource:\n%@",
-                                    [[self class] stringForState:self.state]];
+@implementation RTCMediaSource {
+  RTCMediaSourceType _type;
 }
 
-#pragma mark - Private
-
-- (rtc::scoped_refptr<webrtc::VideoTrackSourceInterface>)nativeVideoSource {
-  return _nativeVideoSource;
-}
+@synthesize nativeMediaSource = _nativeMediaSource;
 
-- (instancetype)initWithNativeVideoSource:
-    (rtc::scoped_refptr<webrtc::VideoTrackSourceInterface>)nativeVideoSource {
-  NSParameterAssert(nativeVideoSource);
+- (instancetype)initWithNativeMediaSource:
+   (rtc::scoped_refptr<webrtc::MediaSourceInterface>)nativeMediaSource
+                                     type:(RTCMediaSourceType)type {
+  RTC_DCHECK(nativeMediaSource);
   if (self = [super init]) {
-    _nativeVideoSource = nativeVideoSource;
+    _nativeMediaSource = nativeMediaSource;
+    _type = type;
   }
   return self;
 }
 
+- (RTCSourceState)state {
+  return [[self class] sourceStateForNativeState:_nativeMediaSource->state()];
+}
+
+#pragma mark - Private
+
 + (webrtc::MediaSourceInterface::SourceState)nativeSourceStateForState:
     (RTCSourceState)state {
   switch (state) {