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/client/gles2_interface.h"
  13 #include "gpu/command_buffer/common/mailbox.h"
  14 #include "media/base/media_export.h"
  15 #include "media/video/video_decode_accelerator.h"
  16 #include "media/video/video_encode_accelerator.h"
  17 #include "ui/gfx/gpu_memory_buffer.h"
  18
  19 namespace base {
  20 class SingleThreadTaskRunner;
  21 class SharedMemory;
  22 }
  23
  24 namespace gfx {
  25 class Rect;
  26 class Size;
  27 }
  28
  29 namespace media {
  30
  31 class VideoDecodeAccelerator;
  32
  33 // Helper interface for specifying factories needed to instantiate a hardware
  34 // video accelerator.
  35 // Threading model:
  36 // * The GpuVideoAcceleratorFactories may be constructed on any thread.
  37 // * The GpuVideoAcceleratorFactories has an associated message loop, which may
  38 //   be retrieved as |GetMessageLoop()|.
  39 // * All calls to the Factories after construction must be made on its message
  40 //   loop.
  41 class MEDIA_EXPORT GpuVideoAcceleratorFactories
  42     : public base::RefCountedThreadSafe<GpuVideoAcceleratorFactories> {
  43  public:
  44   // Return whether GPU encoding/decoding is enabled.
  45   virtual bool IsGpuVideoAcceleratorEnabled() = 0;
  46   // Caller owns returned pointer, but should call Destroy() on it (instead of
  47   // directly deleting) for proper destruction, as per the
  48   // VideoDecodeAccelerator interface.
  49   virtual scoped_ptr<VideoDecodeAccelerator> CreateVideoDecodeAccelerator() = 0;
  50
  51   // Caller owns returned pointer, but should call Destroy() on it (instead of
  52   // directly deleting) for proper destruction, as per the
  53   // VideoEncodeAccelerator interface.
  54   virtual scoped_ptr<VideoEncodeAccelerator> CreateVideoEncodeAccelerator() = 0;
  55
  56   // Allocate & delete native textures.
  57   virtual bool CreateTextures(int32 count,
  58                               const gfx::Size& size,
  59                               std::vector<uint32>* texture_ids,
  60                               std::vector<gpu::Mailbox>* texture_mailboxes,
  61                               uint32 texture_target) = 0;
  62   virtual void DeleteTexture(uint32 texture_id) = 0;
  63
  64   virtual void WaitSyncPoint(uint32 sync_point) = 0;
  65
  66   virtual scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
  67       const gfx::Size& size,
  68       gfx::BufferFormat format,
  69       gfx::BufferUsage usage) = 0;
  70
  71   virtual unsigned ImageTextureTarget() = 0;
  72   virtual bool IsTextureRGSupported() = 0;
  73
  74   virtual gpu::gles2::GLES2Interface* GetGLES2Interface() = 0;
  75
  76   // Allocate & return a shared memory segment.
  77   virtual scoped_ptr<base::SharedMemory> CreateSharedMemory(size_t size) = 0;
  78
  79   // Returns the task runner the video accelerator runs on.
  80   virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() = 0;
  81
  82   // Returns the supported codec profiles of video decode accelerator.
  83   virtual VideoDecodeAccelerator::SupportedProfiles
  84       GetVideoDecodeAcceleratorSupportedProfiles() = 0;
  85
  86   // Returns the supported codec profiles of video encode accelerator.
  87   virtual VideoEncodeAccelerator::SupportedProfiles
  88       GetVideoEncodeAcceleratorSupportedProfiles() = 0;
  89
  90  protected:
  91   friend class base::RefCountedThreadSafe<GpuVideoAcceleratorFactories>;
  92   virtual ~GpuVideoAcceleratorFactories() {}
  93 };
  94
  95 }  // namespace media
  96
  97 #endif  // MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_