iOS HW H264 support.

webrtc/modules/video_coding/codecs/h264/include/h264.h

+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ *
+ */
+
+#ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_H_
+#define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_H_
+
+#if defined(WEBRTC_IOS) || defined(WEBRTC_MAC)
+
+#include <Availability.h>
+#if (defined(__IPHONE_8_0) &&                            \
+     __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_8_0) || \
+    (defined(__MAC_10_8) && __MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_8)
+#define WEBRTC_VIDEO_TOOLBOX_SUPPORTED 1
+#endif
+
+#endif  // defined(WEBRTC_IOS) || defined(WEBRTC_MAC)
+
+#include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
+
+namespace webrtc {
+
+class H264Encoder : public VideoEncoder {
+ public:
+  static H264Encoder* Create();
+  static bool IsSupported();
+
+  ~H264Encoder() override {}
+};
+
+class H264Decoder : public VideoDecoder {
+ public:
+  static H264Decoder* Create();
+  static bool IsSupported();
+
+  ~H264Decoder() override {}
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_H_