1 files changed, 29 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm b/third_party/libwebrtc/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm
index 445006f0d0..64be41ae15 100644
--- a/third_party/libwebrtc/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm
+++ b/third_party/libwebrtc/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm
@@ -13,6 +13,7 @@
 #import "RTCPeerConnectionFactory+Native.h"
 #import "RTCPeerConnectionFactory+Private.h"
 #import "RTCPeerConnectionFactoryOptions+Private.h"
+#import "RTCRtpCapabilities+Private.h"
 
 #import "RTCAudioSource+Private.h"
 #import "RTCAudioTrack+Private.h"
@@ -38,6 +39,7 @@
 #include "api/transport/field_trial_based_config.h"
 #import "components/video_codec/RTCVideoDecoderFactoryH264.h"
 #import "components/video_codec/RTCVideoEncoderFactoryH264.h"
+#include "media/base/media_constants.h"
 #include "modules/audio_device/include/audio_device.h"
 #include "modules/audio_processing/include/audio_processing.h"
 
@@ -214,6 +216,20 @@
   return self;
 }
 
+- (RTC_OBJC_TYPE(RTCRtpCapabilities) *)rtpSenderCapabilitiesForKind:(NSString *)kind {
+  cricket::MediaType mediaType = [[self class] mediaTypeForKind:kind];
+
+  webrtc::RtpCapabilities rtpCapabilities = _nativeFactory->GetRtpSenderCapabilities(mediaType);
+  return [[RTC_OBJC_TYPE(RTCRtpCapabilities) alloc] initWithNativeRtpCapabilities:rtpCapabilities];
+}
+
+- (RTC_OBJC_TYPE(RTCRtpCapabilities) *)rtpReceiverCapabilitiesForKind:(NSString *)kind {
+  cricket::MediaType mediaType = [[self class] mediaTypeForKind:kind];
+
+  webrtc::RtpCapabilities rtpCapabilities = _nativeFactory->GetRtpReceiverCapabilities(mediaType);
+  return [[RTC_OBJC_TYPE(RTCRtpCapabilities) alloc] initWithNativeRtpCapabilities:rtpCapabilities];
+}
+
 - (RTC_OBJC_TYPE(RTCAudioSource) *)audioSourceWithConstraints:
     (nullable RTC_OBJC_TYPE(RTCMediaConstraints) *)constraints {
   std::unique_ptr<webrtc::MediaConstraints> nativeConstraints;
@@ -338,4 +354,17 @@
   return _networkThread.get();
 }
 
+#pragma mark - Private
+
++ (cricket::MediaType)mediaTypeForKind:(NSString *)kind {
+  if (kind == kRTCMediaStreamTrackKindAudio) {
+    return cricket::MEDIA_TYPE_AUDIO;
+  } else if (kind == kRTCMediaStreamTrackKindVideo) {
+    return cricket::MEDIA_TYPE_VIDEO;
+  } else {
+    RTC_DCHECK_NOTREACHED();
+    return cricket::MEDIA_TYPE_UNSUPPORTED;
+  }
+}
+
 @end