text: // Copyright 2014 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 MEDIA_FORMATS_MP2T_TS_SECTION_PSI_H_
  #define MEDIA_FORMATS_MP2T_TS_SECTION_PSI_H_
  
  #include "base/compiler_specific.h"
  #include "media/base/byte_queue.h"
  #include "media/formats/mp2t/ts_section.h"
  
  namespace media {
  
  class BitReader;
  
  namespace mp2t {
  
  class TsSectionPsi : public TsSection {
   public:
    TsSectionPsi();
    ~TsSectionPsi() override;
  
    // TsSection implementation.
    bool Parse(bool payload_unit_start_indicator,
                       const uint8* buf, int size) override;
    void Flush() override;
    void Reset() override;
  
    // Parse the content of the PSI section.
    virtual bool ParsePsiSection(BitReader* bit_reader) = 0;
  
    // Reset the state of the PSI section.
    virtual void ResetPsiSection() = 0;
  
   private:
    void ResetPsiState();
  
    // Bytes of the current PSI.
    ByteQueue psi_byte_queue_;
  
    // Do not start parsing before getting a unit start indicator.
    bool wait_for_pusi_;
  
    // Number of leading bytes to discard (pointer field).
    int leading_bytes_to_discard_;
  
    DISALLOW_COPY_AND_ASSIGN(TsSectionPsi);
  };
  
  }  // namespace mp2t
  }  // namespace media
  
  #endif
  
  