Objective C API to read and set RtpParameters

webrtc/api/objc/RTCRtpEncodingParameters.mm

Index: webrtc/api/objc/RTCRtpEncodingParameters.mm
diff --git a/webrtc/api/objc/RTCRtpEncodingParameters.mm b/webrtc/api/objc/RTCRtpEncodingParameters.mm
new file mode 100644
index 0000000000000000000000000000000000000000..af07a0485d64e92f57ddd00842264f0cb91e1b63
--- /dev/null
+++ b/webrtc/api/objc/RTCRtpEncodingParameters.mm
@@ -0,0 +1,46 @@
+/*
+ *  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 "RTCRtpEncodingParameters+Private.h"
+
+@implementation RTCRtpEncodingParameters
+
+@synthesize isActive = _isActive;
+@synthesize maxBitrateBps = _maxBitrateBps;
+
+static const int kBitrateUnlimited = -1;
+
+- (instancetype)init {
+  return [super init];
+}
+
+- (instancetype)initWithNativeParameters:
+    (const webrtc::RtpEncodingParameters &)nativeParameters {
+  if (self = [self init]) {
+    _isActive = nativeParameters.active;
+    // TODO(skvlad): Replace with rtc::Optional once the C++ code is updated.
+    if (nativeParameters.max_bitrate_bps != kBitrateUnlimited) {
+      _maxBitrateBps =
+          [NSNumber numberWithInt:nativeParameters.max_bitrate_bps];
+    }
+  }
+  return self;
+}
+
+- (webrtc::RtpEncodingParameters)nativeParameters {
+  webrtc::RtpEncodingParameters parameters;
+  parameters.active = _isActive;
+  if (_maxBitrateBps != nil) {
+    parameters.max_bitrate_bps = _maxBitrateBps.intValue;
+  }
+  return parameters;
+}
+
+@end