Implement WiFi Display transport stream packetizer.

extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.h

Index: extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.h
diff --git a/extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.h b/extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..a0e63a82b017c79ce8427a8ae6c9872efbfd573f
--- /dev/null
+++ b/extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.h
@@ -0,0 +1,58 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_ELEMENTARY_STREAM_INFO_H_
+#define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_ELEMENTARY_STREAM_INFO_H_
+
+#include <stdint.h>
+#include <vector>
+
+#include "extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_descriptor.h"
+
+namespace extensions {
+
+// WiFi Display elementary stream info is a container for elementary stream
+// information and is used for passing that information to a WiFi Display
+// transport stream packetizer.
+class WiFiDisplayElementaryStreamInfo {
+ public:
+  using DescriptorVector = std::vector<WiFiDisplayElementaryStreamDescriptor>;
+  using DescriptorTag = WiFiDisplayElementaryStreamDescriptor::DescriptorTag;
+
+  enum ElementaryStreamType : uint8_t {
+    AUDIO_AAC = 0x0Fu,
+    AUDIO_AC3 = 0x81u,
+    AUDIO_LPCM = 0x83u,
+    VIDEO_H264 = 0x1Bu,
+  };
+
+  explicit WiFiDisplayElementaryStreamInfo(ElementaryStreamType type);
+  WiFiDisplayElementaryStreamInfo(ElementaryStreamType type,
+                                  DescriptorVector descriptors);
+  WiFiDisplayElementaryStreamInfo(const WiFiDisplayElementaryStreamInfo&);
+  WiFiDisplayElementaryStreamInfo(WiFiDisplayElementaryStreamInfo&&);
+  ~WiFiDisplayElementaryStreamInfo();
+
+  WiFiDisplayElementaryStreamInfo& operator=(WiFiDisplayElementaryStreamInfo&&);
+
+  const DescriptorVector& descriptors() const { return descriptors_; }
+  ElementaryStreamType type() const { return type_; }
+
+  void AddDescriptor(WiFiDisplayElementaryStreamDescriptor descriptor);
+  const WiFiDisplayElementaryStreamDescriptor* FindDescriptor(
+      DescriptorTag descriptor_tag) const;
+  template <typename Descriptor>
+  const Descriptor* FindDescriptor() const {
+    return static_cast<const Descriptor*>(
+        FindDescriptor(static_cast<DescriptorTag>(Descriptor::kTag)));
+  }
+
+ private:
+  DescriptorVector descriptors_;
+  ElementaryStreamType type_;
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_ELEMENTARY_STREAM_INFO_H_