media/formats/mp2t/ts_section_pes.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_FORMATS_MP2T_TS_SECTION_PES_H_
   6 #define MEDIA_FORMATS_MP2T_TS_SECTION_PES_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "media/base/byte_queue.h"
  12 #include "media/formats/mp2t/ts_section.h"
  13
  14 namespace media {
  15 namespace mp2t {
  16
  17 class EsParser;
  18 class TimestampUnroller;
  19
  20 class TsSectionPes : public TsSection {
  21  public:
  22   TsSectionPes(scoped_ptr<EsParser> es_parser,
  23                TimestampUnroller* timestamp_unroller);
  24   ~TsSectionPes() override;
  25
  26   // TsSection implementation.
  27   bool Parse(bool payload_unit_start_indicator,
  28                      const uint8* buf, int size) override;
  29   void Flush() override;
  30   void Reset() override;
  31
  32  private:
  33   // Emit a reassembled PES packet.
  34   // Return true if successful.
  35   // |emit_for_unknown_size| is used to force emission for PES packets
  36   // whose size is unknown.
  37   bool Emit(bool emit_for_unknown_size);
  38
  39   // Parse a PES packet, return true if successful.
  40   bool ParseInternal(const uint8* raw_pes, int raw_pes_size);
  41
  42   void ResetPesState();
  43
  44   // Bytes of the current PES.
  45   ByteQueue pes_byte_queue_;
  46
  47   // ES parser.
  48   scoped_ptr<EsParser> es_parser_;
  49
  50   // Do not start parsing before getting a unit start indicator.
  51   bool wait_for_pusi_;
  52
  53   // Used to unroll PTS and DTS.
  54   TimestampUnroller* const timestamp_unroller_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(TsSectionPes);
  57 };
  58
  59 }  // namespace mp2t
  60 }  // namespace media
  61
  62 #endif
  63