media/filters/fake_demuxer_stream.h

   1 // Copyright (c) 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_FILTERS_FAKE_DEMUXER_STREAM_H_
   6 #define MEDIA_FILTERS_FAKE_DEMUXER_STREAM_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "media/base/audio_decoder_config.h"
  11 #include "media/base/demuxer_stream.h"
  12 #include "media/base/video_decoder_config.h"
  13
  14 namespace base {
  15 class SingleThreadTaskRunner;
  16 }  // namespace base
  17
  18 namespace media {
  19
  20 class FakeDemuxerStream : public DemuxerStream {
  21  public:
  22   // Constructs an object that outputs |num_configs| different configs in
  23   // sequence with |num_frames_in_one_config| buffers for each config. The
  24   // output buffers are encrypted if |is_encrypted| is true.
  25   FakeDemuxerStream(int num_configs,
  26                     int num_buffers_in_one_config,
  27                     bool is_encrypted);
  28   ~FakeDemuxerStream() override;
  29
  30   // DemuxerStream implementation.
  31   void Read(const ReadCB& read_cb) override;
  32   AudioDecoderConfig audio_decoder_config() override;
  33   VideoDecoderConfig video_decoder_config() override;
  34   Type type() const override;
  35   bool SupportsConfigChanges() override;
  36   VideoRotation video_rotation() override;
  37
  38   void Initialize();
  39
  40   int num_buffers_returned() const { return num_buffers_returned_; }
  41
  42   // Upon the next read, holds the read callback until SatisfyRead() or Reset()
  43   // is called.
  44   void HoldNextRead();
  45
  46   // Upon the next config change read, holds the read callback until
  47   // SatisfyRead() or Reset() is called. If there is no config change any more,
  48   // no read will be held.
  49   void HoldNextConfigChangeRead();
  50
  51   // Satisfies the pending read with the next scheduled status and buffer.
  52   void SatisfyRead();
  53
  54   // Satisfies pending read request and then holds the following read.
  55   void SatisfyReadAndHoldNext();
  56
  57   // Satisfies the pending read (if any) with kAborted and NULL. This call
  58   // always clears |hold_next_read_|.
  59   void Reset();
  60
  61   // Reset() this demuxer stream and set the reading position to the start of
  62   // the stream.
  63   void SeekToStart();
  64
  65   // Sets the splice timestamp for all furture buffers returned via Read().
  66   void set_splice_timestamp(base::TimeDelta splice_timestamp) {
  67     splice_timestamp_ = splice_timestamp;
  68   }
  69
  70  private:
  71   void UpdateVideoDecoderConfig();
  72   void DoRead();
  73
  74   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  75
  76   const int num_configs_;
  77   const int num_buffers_in_one_config_;
  78   const bool config_changes_;
  79   const bool is_encrypted_;
  80
  81   int num_configs_left_;
  82
  83   // Number of frames left with the current decoder config.
  84   int num_buffers_left_in_current_config_;
  85
  86   int num_buffers_returned_;
  87
  88   base::TimeDelta current_timestamp_;
  89   base::TimeDelta duration_;
  90   base::TimeDelta splice_timestamp_;
  91
  92   gfx::Size next_coded_size_;
  93   VideoDecoderConfig video_decoder_config_;
  94
  95   ReadCB read_cb_;
  96
  97   int next_read_num_;
  98   // Zero-based number indicating which read operation should be held. -1 means
  99   // no read shall be held.
 100   int read_to_hold_;
 101
 102   DISALLOW_COPY_AND_ASSIGN(FakeDemuxerStream);
 103 };
 104
 105 }  // namespace media
 106
 107 #endif  // MEDIA_FILTERS_FAKE_DEMUXER_STREAM_H_