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/media_export.h"
  13 #include "media/base/video_decoder_config.h"
  14
  15 namespace base {
  16 class MessageLoopProxy;
  17 }  // namespace base
  18
  19 namespace media {
  20
  21 class MEDIA_EXPORT FakeDemuxerStream : public DemuxerStream {
  22  public:
  23   // Constructs an object that outputs |num_configs| different configs in
  24   // sequence with |num_frames_in_one_config| buffers for each config. The
  25   // output buffers are encrypted if |is_encrypted| is true.
  26   FakeDemuxerStream(int num_configs,
  27                     int num_buffers_in_one_config,
  28                     bool is_encrypted);
  29   virtual ~FakeDemuxerStream();
  30
  31   // DemuxerStream implementation.
  32   virtual void Read(const ReadCB& read_cb) OVERRIDE;
  33   virtual AudioDecoderConfig audio_decoder_config() OVERRIDE;
  34   virtual VideoDecoderConfig video_decoder_config() OVERRIDE;
  35   virtual Type type() OVERRIDE;
  36   virtual void EnableBitstreamConverter() OVERRIDE;
  37
  38   int num_buffers_returned() const { return num_buffers_returned_; }
  39
  40   // Upon the next read, holds the read callback until SatisfyRead() or Reset()
  41   // is called.
  42   void HoldNextRead();
  43
  44   // Upon the next config change read, holds the read callback until
  45   // SatisfyRead() or Reset() is called. If there is no config change any more,
  46   // no read will be held.
  47   void HoldNextConfigChangeRead();
  48
  49   // Satisfies the pending read with the next scheduled status and buffer.
  50   void SatisfyRead();
  51
  52   // Satisfies the pending read (if any) with kAborted and NULL. This call
  53   // always clears |hold_next_read_|.
  54   void Reset();
  55
  56  private:
  57   void UpdateVideoDecoderConfig();
  58   void DoRead();
  59
  60   scoped_refptr<base::MessageLoopProxy> message_loop_;
  61
  62   int num_configs_left_;
  63   int num_buffers_in_one_config_;
  64   bool is_encrypted_;
  65
  66   // Number of frames left with the current decoder config.
  67   int num_buffers_left_in_current_config_;
  68
  69   int num_buffers_returned_;
  70
  71   base::TimeDelta current_timestamp_;
  72   base::TimeDelta duration_;
  73
  74   gfx::Size next_coded_size_;
  75   VideoDecoderConfig video_decoder_config_;
  76
  77   ReadCB read_cb_;
  78
  79   int next_read_num_;
  80   // Zero-based number indicating which read operation should be held. -1 means
  81   // no read shall be held.
  82   int read_to_hold_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(FakeDemuxerStream);
  85 };
  86
  87 }  // namespace media
  88
  89 #endif  // MEDIA_FILTERS_FAKE_DEMUXER_STREAM_H_