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 class VideoRendererSink;
  22
  23 // A factory class for creating media::Renderer to be used by media pipeline.
  24 class MEDIA_EXPORT RendererFactory {
  25  public:
  26   RendererFactory();
  27   virtual ~RendererFactory();
  28
  29   // Creates and returns a Renderer. All methods of the created Renderer except
  30   // for GetMediaTime() will be called on the |media_task_runner|.
  31   // GetMediaTime() could be called on any thread.
  32   // The created Renderer can use |audio_renderer_sink| to render audio and
  33   // |video_renderer_sink| to render video.
  34   virtual scoped_ptr<Renderer> CreateRenderer(
  35       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
  36       AudioRendererSink* audio_renderer_sink,
  37       VideoRendererSink* video_renderer_sink) = 0;
  38
  39  private:
  40   DISALLOW_COPY_AND_ASSIGN(RendererFactory);
  41 };
  42
  43 }  // namespace media
  44
  45 #endif  // MEDIA_BASE_RENDERER_FACTORY_H_