enable scp

build/ios/Makefile

@@ -29,7 +29,8 @@ package:
 .PHONY: patch
 patch: common-patch
 	cd $(SRC_DIR) && \
-	patch -p2 < $(PATCH_DIR)/enable_ios_scalability_mode.patch
+	patch -p2 < $(PATCH_DIR)/enable_ios_scalability_mode.patch && \
+	patch -p2 < $(PATCH_DIR)/set_codec_preferences_ios.patch
 
 .PHONY: build
 build: patch

patch/set_codec_preferences_ios.patch

@@ -0,0 +1,61 @@
+diff --git a/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.h b/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.h
+index fd59013..1701f68 100644
+--- a/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.h
++++ b/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.h
+@@ -46,6 +46,7 @@ RTC_OBJC_EXPORT
+ @end
+
+ @class RTC_OBJC_TYPE(RTCRtpTransceiver);
++@class RTC_OBJC_TYPE(RTCRtpCodecCapability);
+
+ /** The RTCRtpTransceiver maps to the RTCRtpTransceiver defined by the
+  *  WebRTC specification. A transceiver represents a combination of an RTCRtpSender
+@@ -118,6 +119,12 @@ RTC_OBJC_EXPORT
+  */
+ - (void)stopInternal;
+
++/** The setCodecPreferences method overrides the default codec preferences used
++ * by WebRTC for this transceiver.
++ * https://w3c.github.io/webrtc-pc/#dom-rtcrtptransceiver-setcodecpreferences
++ */
++- (void)setCodecPreferences:(NSArray<RTC_OBJC_TYPE(RTCRtpCodecCapability) *> *)codecs;
++
+ /** An update of directionality does not take effect immediately. Instead,
+  *  future calls to createOffer and createAnswer mark the corresponding media
+  *  descriptions as sendrecv, sendonly, recvonly, or inactive.
+diff --git a/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.mm b/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.mm
+index ae1cf79..eb0ad96 100644
+--- a/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.mm
++++ b/src/sdk/objc/api/peerconnection/RTCRtpTransceiver.mm
+@@ -10,6 +10,7 @@
+
+ #import "RTCRtpTransceiver+Private.h"
+
++#import "RTCRtpCodecCapability+Private.h"
+ #import "RTCRtpEncodingParameters+Private.h"
+ #import "RTCRtpParameters+Private.h"
+ #import "RTCRtpReceiver+Private.h"
+@@ -17,6 +18,8 @@
+ #import "base/RTCLogging.h"
+ #import "helpers/NSString+StdString.h"
+
++#include "api/rtp_parameters.h"
++
+ NSString *const kRTCRtpTransceiverErrorDomain = @"org.webrtc.RTCRtpTranceiver";
+
+ @implementation RTC_OBJC_TYPE (RTCRtpTransceiverInit)
+@@ -105,6 +108,14 @@ NSString *const kRTCRtpTransceiverErrorDomain = @"org.webrtc.RTCRtpTranceiver";
+   _nativeRtpTransceiver->StopInternal();
+ }
+
++- (void)setCodecPreferences:(NSArray<RTC_OBJC_TYPE(RTCRtpCodecCapability) *> *)codecs {
++  std::vector<webrtc::RtpCodecCapability> codecCapabilities;
++  for (RTC_OBJC_TYPE(RTCRtpCodecCapability) * rtpCodecCapability in codecs) {
++    codecCapabilities.push_back(rtpCodecCapability.nativeRtpCodecCapability);
++  }
++  _nativeRtpTransceiver->SetCodecPreferences(codecCapabilities);
++}
++
+ - (NSString *)description {
+   return [NSString
+       stringWithFormat:@"RTC_OBJC_TYPE(RTCRtpTransceiver) {\n  sender: %@\n  receiver: %@\n}",