iOS HW H264 support.

talk/examples/objc/AppRTCDemo/tests/ARDAppClientTest.mm

 /*
  * libjingle
  * Copyright 2014 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 13 matching lines @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #import <Foundation/Foundation.h>
 #import <OCMock/OCMock.h>
 
 #import "ARDAppClient+Internal.h"
 #import "ARDJoinResponse+Internal.h"
 #import "ARDMessageResponse+Internal.h"
+#import "ARDSDPUtils.h"
 #import "RTCMediaConstraints.h"
 #import "RTCPeerConnectionFactory.h"
+#import "RTCSessionDescription.h"
 
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/ssladapter.h"
 
 // These classes mimic XCTest APIs, to make eventual conversion to XCTest
 // easier. Conversion will happen once XCTest is supported well on build bots.
 @interface ARDTestExpectation : NSObject
 
 @property(nonatomic, readonly) NSString *description;
 @property(nonatomic, readonly) BOOL isFulfilled;
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   [answerer connectToRoomWithId:roomId options:nil];
   [self waitForExpectationsWithTimeout:20 handler:^(NSError *error) {
     if (error) {
       NSLog(@"Expectations error: %@", error);
     }
   }];
 }
 
 @end
 
+@interface ARDSDPUtilsTest : ARDTestCase
+- (void)testPreferVideoCodec;
+@end
+
+@implementation ARDSDPUtilsTest
+
+- (void)testPreferVideoCodec {
+  NSString *sdp = @("m=video 9 RTP/SAVPF 100 116 117 96 120\n"
+                    "a=rtpmap:120 H264/90000\n");
+  NSString *expectedSdp = @("m=video 9 RTP/SAVPF 120 100 116 117 96\n"
+                            "a=rtpmap:120 H264/90000\n");
+  RTCSessionDescription* desc =
+      [[RTCSessionDescription alloc] initWithType:@"offer" sdp:sdp];
+  RTCSessionDescription *h264Desc =
+      [ARDSDPUtils descriptionForDescription:desc
+                         preferredVideoCodec:@"H264"];
+  EXPECT_TRUE([h264Desc.description isEqualToString:expectedSdp]);
+}
+
+@end
+
 class SignalingTest : public ::testing::Test {
  protected:
   static void SetUpTestCase() {
     rtc::InitializeSSL();
   }
   static void TearDownTestCase() {
     rtc::CleanupSSL();
   }
 };
 
 TEST_F(SignalingTest, SessionTest) {
   @autoreleasepool {
     ARDAppClientTest *test = [[ARDAppClientTest alloc] init];
     [test testSession];
   }
 }
+
+TEST_F(SignalingTest, SDPTest) {
+  @autoreleasepool {
+    ARDSDPUtilsTest *test = [[ARDSDPUtilsTest alloc] init];
+    [test testPreferVideoCodec];
+  }
+}
+
+