Decode h264 fmtp sprop-parameter-sets to binary.

BUG=webrtc:5948

Review-Url: https://codereview.webrtc.org/2544493005
Cr-Commit-Position: refs/heads/master@{#15474}

webrtc/modules/video_coding/h264_sprop_parameter_sets.h

@@ -0,0 +1,36 @@
+/*
+ *  Copyright (c) 2016 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_H264_SPROP_PARAMETER_SETS_H_
+#define WEBRTC_MODULES_VIDEO_CODING_H264_SPROP_PARAMETER_SETS_H_
+
+#include <string>
+#include <vector>
+
+#include "webrtc/base/common.h"
+
+namespace webrtc {
+
+class H264SpropParameterSets {
+ public:
+  H264SpropParameterSets() {}
+  bool DecodeSprop(const std::string& sprop);
+  const std::vector<uint8_t>& sps_nalu() { return sps_; }
+  const std::vector<uint8_t>& pps_nalu() { return pps_; }
+
+ private:
+  std::vector<uint8_t> sps_;
+  std::vector<uint8_t> pps_;
+  RTC_DISALLOW_COPY_AND_ASSIGN(H264SpropParameterSets);
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_CODING_H264_SPROP_PARAMETER_SETS_H_