Mpeg2 TS stream parser for media source.

media/mpeg2/mpeg2ts_pes.h

Index: media/mpeg2/mpeg2ts_pes.h
diff --git a/media/mpeg2/mpeg2ts_pes.h b/media/mpeg2/mpeg2ts_pes.h
new file mode 100644
index 0000000000000000000000000000000000000000..8d37adf52c04e22566efa29306a199a4a0f3d7b8
--- /dev/null
+++ b/media/mpeg2/mpeg2ts_pes.h
@@ -0,0 +1,66 @@
+// Copyright (c) 2013 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_MPEG2_MPEG2TS_PES_PARSER_H_
+#define MEDIA_MPEG2_MPEG2TS_PES_PARSER_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/base/byte_queue.h"
+#include "media/mpeg2/mpeg2ts_section_parser.h"
+
+namespace media {
+namespace mpeg2ts {
+
+class EsParser;
+
+class Mpeg2TsPesParser : public Mpeg2TsSectionParser {
+ public:
+  explicit Mpeg2TsPesParser(EsParser* es_parser);
+  virtual ~Mpeg2TsPesParser();
+
+  // Mpeg2TsSectionParser implementation.
+  virtual bool Parse(bool payload_unit_start_indicator,
+                     const uint8* buf, int size) OVERRIDE;
+  virtual void Flush() OVERRIDE;
+
+ private:
+  // Emit a reassembled PES packet.
+  // Return true if successful.
+  // |emit_for_unknown_size| is used to force emission for PES packets
+  // whose size is unknown.
+  bool Emit(bool emit_for_unknown_size);
+
+  // Parse a PES packet, return true if successful.
+  bool ParseInternal(const uint8* raw_pes, int raw_pes_size);
+
+  void ResetState();
+
+  // Bytes of the current PES.
+  ByteQueue pes_byte_queue_;
+
+  // ES parser.
+  scoped_ptr<EsParser> es_parser_;
+
+  // Do not start parsing before getting a unit start indicator.
+  bool wait_for_pusi_;
+
+  // Used to unroll PTS and DTS.
+  bool previous_pts_valid_;
+  int64 previous_pts_;
+  bool previous_dts_valid_;
+  int64 previous_dts_;
+
+  DISALLOW_COPY_AND_ASSIGN(Mpeg2TsPesParser);
+};
+
+}  // namespace mpeg2ts
+}  // namespace media
+
+#endif
+