media/base/stream_parser_buffer.h

   1 // Copyright (c) 2012 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_BASE_STREAM_PARSER_BUFFER_H_
   6 #define MEDIA_BASE_STREAM_PARSER_BUFFER_H_
   7
   8 #include "media/base/decoder_buffer.h"
   9 #include "media/base/media_export.h"
  10
  11 namespace media {
  12
  13 class MEDIA_EXPORT StreamParserBuffer : public DecoderBuffer {
  14  public:
  15   // Value used to signal an invalid decoder config ID.
  16   enum { kInvalidConfigId = -1 };
  17
  18   static scoped_refptr<StreamParserBuffer> CreateEOSBuffer();
  19   static scoped_refptr<StreamParserBuffer> CopyFrom(
  20       const uint8* data, int data_size, bool is_keyframe);
  21   static scoped_refptr<StreamParserBuffer> CopyFrom(
  22       const uint8* data, int data_size,
  23       const uint8* side_data, int side_data_size, bool is_keyframe);
  24   bool IsKeyframe() const { return is_keyframe_; }
  25
  26   // Decode timestamp. If not explicitly set, or set to kNoTimestamp(), the
  27   // value will be taken from the normal timestamp.
  28   base::TimeDelta GetDecodeTimestamp() const;
  29   void SetDecodeTimestamp(const base::TimeDelta& timestamp);
  30
  31   // Gets/sets the ID of the decoder config associated with this
  32   // buffer.
  33   int GetConfigId() const;
  34   void SetConfigId(int config_id);
  35
  36   // Buffers to be exhausted before using the data in this DecoderBuffer.  Used
  37   // to implement the Audio Splice Frame Algorithm per the MSE specification.
  38   const std::vector<scoped_refptr<StreamParserBuffer> >& GetFadeOutPreroll()
  39       const;
  40   void SetFadeOutPreroll(
  41       const std::vector<scoped_refptr<StreamParserBuffer> >& fade_out_preroll);
  42
  43  private:
  44   StreamParserBuffer(const uint8* data, int data_size,
  45                      const uint8* side_data, int side_data_size,
  46                      bool is_keyframe);
  47   virtual ~StreamParserBuffer();
  48
  49   bool is_keyframe_;
  50   base::TimeDelta decode_timestamp_;
  51   int config_id_;
  52   std::vector<scoped_refptr<StreamParserBuffer> > fade_out_preroll_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(StreamParserBuffer);
  55 };
  56
  57 }  // namespace media
  58
  59 #endif  // MEDIA_BASE_STREAM_PARSER_BUFFER_H_