media/renderers/gpu_video_accelerator_factories.h

   1 // Copyright 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_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
   6 #define MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
   7
   8 #include <vector>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "gpu/command_buffer/common/mailbox.h"
  13 #include "media/base/media_export.h"
  14 #include "media/video/video_decode_accelerator.h"
  15 #include "media/video/video_encode_accelerator.h"
  16
  17 namespace base {
  18 class SingleThreadTaskRunner;
  19 class SharedMemory;
  20 }
  21
  22 namespace gfx {
  23 class Rect;
  24 class Size;
  25 }
  26
  27 namespace media {
  28
  29 class VideoDecodeAccelerator;
  30
  31 // Helper interface for specifying factories needed to instantiate a hardware
  32 // video accelerator.
  33 // Threading model:
  34 // * The GpuVideoAcceleratorFactories may be constructed on any thread.
  35 // * The GpuVideoAcceleratorFactories has an associated message loop, which may
  36 //   be retrieved as |GetMessageLoop()|.
  37 // * All calls to the Factories after construction must be made on its message
  38 //   loop.
  39 class MEDIA_EXPORT GpuVideoAcceleratorFactories
  40     : public base::RefCountedThreadSafe<GpuVideoAcceleratorFactories> {
  41  public:
  42   // Caller owns returned pointer, but should call Destroy() on it (instead of
  43   // directly deleting) for proper destruction, as per the
  44   // VideoDecodeAccelerator interface.
  45   virtual scoped_ptr<VideoDecodeAccelerator> CreateVideoDecodeAccelerator() = 0;
  46
  47   // Caller owns returned pointer, but should call Destroy() on it (instead of
  48   // directly deleting) for proper destruction, as per the
  49   // VideoEncodeAccelerator interface.
  50   virtual scoped_ptr<VideoEncodeAccelerator> CreateVideoEncodeAccelerator() = 0;
  51
  52   // Allocate & delete native textures.
  53   virtual bool CreateTextures(int32 count,
  54                               const gfx::Size& size,
  55                               std::vector<uint32>* texture_ids,
  56                               std::vector<gpu::Mailbox>* texture_mailboxes,
  57                               uint32 texture_target) = 0;
  58   virtual void DeleteTexture(uint32 texture_id) = 0;
  59
  60   virtual void WaitSyncPoint(uint32 sync_point) = 0;
  61
  62   // Allocate & return a shared memory segment.
  63   virtual scoped_ptr<base::SharedMemory> CreateSharedMemory(size_t size) = 0;
  64
  65   // Returns the task runner the video accelerator runs on.
  66   virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() = 0;
  67
  68   // Returns the supported codec profiles of video decode accelerator.
  69   virtual VideoDecodeAccelerator::SupportedProfiles
  70       GetVideoDecodeAcceleratorSupportedProfiles() = 0;
  71
  72   // Returns the supported codec profiles of video encode accelerator.
  73   virtual VideoEncodeAccelerator::SupportedProfiles
  74       GetVideoEncodeAcceleratorSupportedProfiles() = 0;
  75
  76  protected:
  77   friend class base::RefCountedThreadSafe<GpuVideoAcceleratorFactories>;
  78   virtual ~GpuVideoAcceleratorFactories() {}
  79 };
  80
  81 }  // namespace media
  82
  83 #endif  // MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_