Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_APP_H_
      12             : #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_APP_H_
      13             : 
      14             : #include "webrtc/base/buffer.h"
      15             : #include "webrtc/base/constructormagic.h"
      16             : #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
      17             : 
      18             : namespace webrtc {
      19             : namespace rtcp {
      20             : class CommonHeader;
      21             : 
      22             : class App : public RtcpPacket {
      23             :  public:
      24             :   static constexpr uint8_t kPacketType = 204;
      25           0 :   App() : sub_type_(0), ssrc_(0), name_(0) {}
      26           0 :   ~App() override {}
      27             : 
      28             :   // Parse assumes header is already parsed and validated.
      29             :   bool Parse(const CommonHeader& packet);
      30             : 
      31           0 :   void SetSsrc(uint32_t ssrc) { ssrc_ = ssrc; }
      32             :   void SetSubType(uint8_t subtype);
      33           0 :   void SetName(uint32_t name) { name_ = name; }
      34             :   void SetData(const uint8_t* data, size_t data_length);
      35             : 
      36             :   uint8_t sub_type() const { return sub_type_; }
      37             :   uint32_t ssrc() const { return ssrc_; }
      38             :   uint32_t name() const { return name_; }
      39             :   size_t data_size() const { return data_.size(); }
      40             :   const uint8_t* data() const { return data_.data(); }
      41             : 
      42             :  protected:
      43             :   bool Create(uint8_t* packet,
      44             :               size_t* index,
      45             :               size_t max_length,
      46             :               RtcpPacket::PacketReadyCallback* callback) const override;
      47             : 
      48             :  private:
      49             :   static constexpr size_t kAppBaseLength = 8;  // Ssrc and Name.
      50             :   static constexpr size_t kMaxDataSize = 0xffff * 4 - kAppBaseLength;
      51           0 :   size_t BlockLength() const override {
      52           0 :     return kHeaderLength + kAppBaseLength + data_.size();
      53             :   }
      54             : 
      55             :   uint8_t sub_type_;
      56             :   uint32_t ssrc_;
      57             :   uint32_t name_;
      58             :   rtc::Buffer data_;
      59             : 
      60             :   RTC_DISALLOW_COPY_AND_ASSIGN(App);
      61             : };
      62             : 
      63             : }  // namespace rtcp
      64             : }  // namespace webrtc
      65             : #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_APP_H_