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