media/base/renderer_factory.h

   1 // Copyright 2014 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_RENDERER_FACTORY_H_
   6 #define MEDIA_BASE_RENDERER_FACTORY_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "media/base/media_export.h"
  12 #include "media/base/renderer.h"
  13
  14 namespace base {
  15 class SingleThreadTaskRunner;
  16 }
  17
  18 namespace media {
  19
  20 class AudioRendererSink;
  21
  22 // A factory class for creating media::Renderer to be used by media pipeline.
  23 class MEDIA_EXPORT RendererFactory {
  24  public:
  25   RendererFactory();
  26   virtual ~RendererFactory();
  27
  28   // Creates and returns a Renderer. All methods of the created Renderer except
  29   // for GetMediaTime() will be called on the |media_task_runner|.
  30   // GetMediaTime() could be called on any thread.
  31   // The created Renderer can use the |audio_renderer_sink| to render audio.
  32   virtual scoped_ptr<Renderer> CreateRenderer(
  33       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
  34       AudioRendererSink* audio_renderer_sink) = 0;
  35
  36  private:
  37   DISALLOW_COPY_AND_ASSIGN(RendererFactory);
  38 };
  39
  40 }  // namespace media
  41
  42 #endif  // MEDIA_BASE_RENDERER_FACTORY_H_