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 MessageLoopProxy;
  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   virtual ~FakeDemuxerStream();
  29
  30   // DemuxerStream implementation.
  31   virtual void Read(const ReadCB& read_cb) OVERRIDE;
  32   virtual AudioDecoderConfig audio_decoder_config() OVERRIDE;
  33   virtual VideoDecoderConfig video_decoder_config() OVERRIDE;
  34   virtual Type type() OVERRIDE;
  35   virtual void EnableBitstreamConverter() OVERRIDE;
  36
  37   int num_buffers_returned() const { return num_buffers_returned_; }
  38
  39   // Upon the next read, holds the read callback until SatisfyRead() or Reset()
  40   // is called.
  41   void HoldNextRead();
  42
  43   // Upon the next config change read, holds the read callback until
  44   // SatisfyRead() or Reset() is called. If there is no config change any more,
  45   // no read will be held.
  46   void HoldNextConfigChangeRead();
  47
  48   // Satisfies the pending read with the next scheduled status and buffer.
  49   void SatisfyRead();
  50
  51   // Satisfies the pending read (if any) with kAborted and NULL. This call
  52   // always clears |hold_next_read_|.
  53   void Reset();
  54
  55  private:
  56   void UpdateVideoDecoderConfig();
  57   void DoRead();
  58
  59   scoped_refptr<base::MessageLoopProxy> message_loop_;
  60
  61   int num_configs_left_;
  62   int num_buffers_in_one_config_;
  63   bool is_encrypted_;
  64
  65   // Number of frames left with the current decoder config.
  66   int num_buffers_left_in_current_config_;
  67
  68   int num_buffers_returned_;
  69
  70   base::TimeDelta current_timestamp_;
  71   base::TimeDelta duration_;
  72
  73   gfx::Size next_coded_size_;
  74   VideoDecoderConfig video_decoder_config_;
  75
  76   ReadCB read_cb_;
  77
  78   int next_read_num_;
  79   // Zero-based number indicating which read operation should be held. -1 means
  80   // no read shall be held.
  81   int read_to_hold_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(FakeDemuxerStream);
  84 };
  85
  86 }  // namespace media
  87
  88 #endif  // MEDIA_FILTERS_FAKE_DEMUXER_STREAM_H_