Support for H264 HW offload for webRTC.

content/renderer/media/rtc_video_encoder_factory.cc

Index: content/renderer/media/rtc_video_encoder_factory.cc
diff --git a/content/renderer/media/rtc_video_encoder_factory.cc b/content/renderer/media/rtc_video_encoder_factory.cc
index 777d69f83c9a13e43d906e35cde8a53d5479d05f..f30b6260cecbeb2df287dad58f0aa7c2331d94a0 100644
--- a/content/renderer/media/rtc_video_encoder_factory.cc
+++ b/content/renderer/media/rtc_video_encoder_factory.cc
@@ -14,32 +14,28 @@ namespace content {
 namespace {
 
 // Translate from media::VideoEncodeAccelerator::SupportedProfile to
-// cricket::WebRtcVideoEncoderFactory::VideoCodec
-cricket::WebRtcVideoEncoderFactory::VideoCodec VEAToWebRTCCodec(
+// one or more instances of cricket::WebRtcVideoEncoderFactory::VideoCodec
+std::vector<cricket::WebRtcVideoEncoderFactory::VideoCodec> VEAToWebRTCCodecs(
     const media::VideoEncodeAccelerator::SupportedProfile& profile) {
-  webrtc::VideoCodecType type = webrtc::kVideoCodecUnknown;
-  std::string name;
-  int width = 0, height = 0, fps = 0;
+  int width = profile.max_resolution.width();
+  int height = profile.max_resolution.height();
+  int fps = profile.max_framerate.numerator;
+  DCHECK_EQ(profile.max_framerate.denominator, 1U);
 
+  std::vector<cricket::WebRtcVideoEncoderFactory::VideoCodec> codecs;
   if (profile.profile >= media::VP8PROFILE_MIN &&
       profile.profile <= media::VP8PROFILE_MAX) {
-    type = webrtc::kVideoCodecVP8;
-    name = "VP8";
+    codecs.push_back(cricket::WebRtcVideoEncoderFactory::VideoCodec(
+        webrtc::kVideoCodecVP8, "VP8", width, height, fps));
   } else if (profile.profile >= media::H264PROFILE_MIN &&
              profile.profile <= media::H264PROFILE_MAX) {
-    type = webrtc::kVideoCodecGeneric;
-    name = "CAST1";
+    codecs.push_back(cricket::WebRtcVideoEncoderFactory::VideoCodec(
+        webrtc::kVideoCodecGeneric, "CAST1", width, height, fps));
+    codecs.push_back(cricket::WebRtcVideoEncoderFactory::VideoCodec(
+        webrtc::kVideoCodecH264, "H264", width, height, fps));
   }
 
-  if (type != webrtc::kVideoCodecUnknown) {
-    width = profile.max_resolution.width();
-    height = profile.max_resolution.height();
-    fps = profile.max_framerate.numerator;
-    DCHECK_EQ(profile.max_framerate.denominator, 1U);
-  }
-
-  return cricket::WebRtcVideoEncoderFactory::VideoCodec(
-      type, name, width, height, fps);
+  return codecs;
 }
 
 // Translate from cricket::WebRtcVideoEncoderFactory::VideoCodec to
@@ -49,6 +45,7 @@ media::VideoCodecProfile WebRTCCodecToVideoCodecProfile(
   switch (type) {
     case webrtc::kVideoCodecVP8:
       return media::VP8PROFILE_MAIN;
+    case webrtc::kVideoCodecH264:
     case webrtc::kVideoCodecGeneric:
       return media::H264PROFILE_MAIN;
     default:
@@ -65,9 +62,8 @@ RTCVideoEncoderFactory::RTCVideoEncoderFactory(
   std::vector<media::VideoEncodeAccelerator::SupportedProfile> profiles =
       GpuVideoEncodeAcceleratorHost::GetSupportedProfiles();
   for (size_t i = 0; i < profiles.size(); ++i) {
-    VideoCodec codec = VEAToWebRTCCodec(profiles[i]);
-    if (codec.type != webrtc::kVideoCodecUnknown)
-      codecs_.push_back(codec);
+    std::vector<VideoCodec> codecs = VEAToWebRTCCodecs(profiles[i]);
+    codecs_.insert(codecs_.end(), codecs.begin(), codecs.end());
   }
 }