media/mp2t/ts_section_pes.h

   1 // Copyright 2013 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_MP2T_TS_SECTION_PES_H_
   6 #define MEDIA_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/mp2t/ts_section.h"
  13
  14 namespace media {
  15 namespace mp2t {
  16
  17 class EsParser;
  18
  19 class TsSectionPes : public TsSection {
  20  public:
  21   explicit TsSectionPes(scoped_ptr<EsParser> es_parser);
  22   virtual ~TsSectionPes();
  23
  24   // TsSection implementation.
  25   virtual bool Parse(bool payload_unit_start_indicator,
  26                      const uint8* buf, int size) OVERRIDE;
  27   virtual void Flush() OVERRIDE;
  28   virtual void Reset() OVERRIDE;
  29
  30  private:
  31   // Emit a reassembled PES packet.
  32   // Return true if successful.
  33   // |emit_for_unknown_size| is used to force emission for PES packets
  34   // whose size is unknown.
  35   bool Emit(bool emit_for_unknown_size);
  36
  37   // Parse a PES packet, return true if successful.
  38   bool ParseInternal(const uint8* raw_pes, int raw_pes_size);
  39
  40   void ResetPesState();
  41
  42   // Bytes of the current PES.
  43   ByteQueue pes_byte_queue_;
  44
  45   // ES parser.
  46   scoped_ptr<EsParser> es_parser_;
  47
  48   // Do not start parsing before getting a unit start indicator.
  49   bool wait_for_pusi_;
  50
  51   // Used to unroll PTS and DTS.
  52   bool previous_pts_valid_;
  53   int64 previous_pts_;
  54   bool previous_dts_valid_;
  55   int64 previous_dts_;
  56
  57   DISALLOW_COPY_AND_ASSIGN(TsSectionPes);
  58 };
  59
  60 }  // namespace mp2t
  61 }  // namespace media
  62
  63 #endif
  64