iOS HW H264 support.

talk/app/webrtc/objc/h264encoderfactory.cc

 /*
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-#include "talk/app/webrtc/dtlsidentityservice.h"
+#include "talk/app/webrtc/objc/h264encoderfactory.h"
 
-#include "talk/app/webrtc/dtlsidentitystore.h"
-#include "webrtc/base/logging.h"
+#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
+
+static size_t const kMaxVideoSize = 1280;
+static size_t const kMaxFps = 30;
 
 namespace webrtc {
 
-bool DtlsIdentityService::RequestIdentity(
-    const std::string& identity_name,
-    const std::string& common_name,
-    webrtc::DTLSIdentityRequestObserver* observer) {
-  if (identity_name != DtlsIdentityStore::kIdentityName ||
-      common_name != DtlsIdentityStore::kIdentityName) {
-    LOG(LS_WARNING) << "DtlsIdentityService::RequestIdentity called with "
-                    << "unsupported params, identity_name=" << identity_name
-                    << ", common_name=" << common_name;
-    return false;
+H264EncoderFactory::H264EncoderFactory() {
+  // Check that encoder can be created.
+  // TODO(tkchin): Find better way to check that encoder is supported. e.g.

[pbos-webrtc, 2015/06/23 19:13:56]

Yes, please do that now. bool H264Encoder::IsSupported() const; and never have
::Create return a nullptr.

[tkchin_webrtc, 2015/06/24 23:21:14]

Done.

+  // is iOS8 sufficient.
+  rtc::scoped_ptr<H264Encoder> encoder(H264Encoder::Create());
+  if (encoder) {
+    webrtc::VideoCodec rtc_codec = {};
+    rtc_codec.codecType = webrtc::kVideoCodecH264;
+    rtc_codec.width = 640;
+    rtc_codec.height = 480;
+    rtc_codec.targetBitrate = 100;
+    bool h264_supported =
+        encoder->InitEncode(&rtc_codec, 0, 0) == WEBRTC_VIDEO_CODEC_OK;
+    if (h264_supported) {
+      h264_codec_or_empty_vector_.push_back(VideoCodec(
+          kVideoCodecH264, "H264", kMaxVideoSize, kMaxVideoSize, kMaxFps));
+    }
   }
-  store_->RequestIdentity(observer);
-  return true;
+}
+
+VideoEncoder* H264EncoderFactory::CreateVideoEncoder(VideoCodecType type) {
+  for (const VideoCodec& codec : h264_codec_or_empty_vector_) {
+    if (codec.type == type) {
+      return H264Encoder::Create();
+    }
+  }
+  return nullptr;
+}
+
+const std::vector<cricket::WebRtcVideoEncoderFactory::VideoCodec>&
+H264EncoderFactory::codecs() const {
+  return h264_codec_or_empty_vector_;
+}
+
+void H264EncoderFactory::DestroyVideoEncoder(VideoEncoder* encoder) {
+  delete encoder;
 }
 
 }  // namespace webrtc