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Unified Diff: extensions/renderer/api/display_source/wifi_display/wifi_display_media_packetizer.h

Issue 1796073003: Implement WiFi Display media packetizer. (Closed) Base URL: https://chromium.googlesource.com/chromium/src@master
Patch Set: Rebase, comments Created 4 years, 9 months ago
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Index: extensions/renderer/api/display_source/wifi_display/wifi_display_media_packetizer.h
diff --git a/extensions/renderer/api/display_source/wifi_display/wifi_display_media_packetizer.h b/extensions/renderer/api/display_source/wifi_display/wifi_display_media_packetizer.h
new file mode 100644
index 0000000000000000000000000000000000000000..23c07e081193d1c54159ff14c31ad0f7b9e8b002
--- /dev/null
+++ b/extensions/renderer/api/display_source/wifi_display/wifi_display_media_packetizer.h
@@ -0,0 +1,61 @@
+// 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_MEDIA_PACKETIZER_H_
+#define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_PACKETIZER_H_
+
+#include <vector>
+
+#include "base/callback.h"
+#include "base/move.h"
+#include "extensions/renderer/api/display_source/wifi_display/wifi_display_transport_stream_packetizer.h"
+
+namespace extensions {
+
+// This class represents an RTP datagram packet containing MPEG Transport
+// Stream (MPEG-TS) packets as a payload.
+class WiFiDisplayMediaDatagramPacket : public std::vector<uint8_t> {
+ public:
+ WiFiDisplayMediaDatagramPacket();
+ WiFiDisplayMediaDatagramPacket(WiFiDisplayMediaDatagramPacket&&);
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND(WiFiDisplayMediaDatagramPacket);
+};
+
+// The WiFi Display media packetizer packetizes unit buffers to media datagram
+// packets containing MPEG Transport Stream (MPEG-TS) packets containing either
+// meta information or Packetized Elementary Stream (PES) packets containing
+// unit data.
+//
+// Whenever a media datagram packet is fully created and thus ready for further
+// processing, a callback is called.
+class WiFiDisplayMediaPacketizer : public WiFiDisplayTransportStreamPacketizer {
+ public:
+ using PacketizedCallback =
+ base::Callback<bool(WiFiDisplayMediaDatagramPacket)>;
+
+ WiFiDisplayMediaPacketizer(
+ const base::TimeDelta& delay_for_unit_time_stamps,
+ std::vector<WiFiDisplayElementaryStreamInfo> stream_infos,
+ const PacketizedCallback& on_packetized);
+ ~WiFiDisplayMediaPacketizer() override;
+
+ protected:
+ bool OnPacketizedTransportStreamPacket(
+ const WiFiDisplayTransportStreamPacket& transport_stream_packet,
+ bool flush) override;
+
+ private:
+ using SourceIdentifier = uint8_t[4];
+
+ WiFiDisplayMediaDatagramPacket media_datagram_packet_;
+ PacketizedCallback on_packetized_media_datagram_packet_;
+ uint16_t sequence_number_;
+ SourceIdentifier synchronization_source_identifier_;
+};
+
+} // namespace extensions
+
+#endif // EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_PACKETIZER_H_
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