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/base/video_types.h"
  16 #include "media/video/video_decode_accelerator.h"
  17 #include "media/video/video_encode_accelerator.h"
  18 #include "ui/gfx/gpu_memory_buffer.h"
  19
  20 namespace base {
  21 class SingleThreadTaskRunner;
  22 class SharedMemory;
  23 }
  24
  25 namespace gfx {
  26 class Rect;
  27 class Size;
  28 }
  29
  30 namespace media {
  31
  32 class VideoDecodeAccelerator;
  33
  34 // Helper interface for specifying factories needed to instantiate a hardware
  35 // video accelerator.
  36 // Threading model:
  37 // * The GpuVideoAcceleratorFactories may be constructed on any thread.
  38 // * The GpuVideoAcceleratorFactories has an associated message loop, which may
  39 //   be retrieved as |GetMessageLoop()|.
  40 // * All calls to the Factories after construction must be made on its message
  41 //   loop.
  42 class MEDIA_EXPORT GpuVideoAcceleratorFactories
  43     : public base::RefCountedThreadSafe<GpuVideoAcceleratorFactories> {
  44  public:
  45   // Return whether GPU encoding/decoding is enabled.
  46   virtual bool IsGpuVideoAcceleratorEnabled() = 0;
  47   // Caller owns returned pointer, but should call Destroy() on it (instead of
  48   // directly deleting) for proper destruction, as per the
  49   // VideoDecodeAccelerator interface.
  50   virtual scoped_ptr<VideoDecodeAccelerator> CreateVideoDecodeAccelerator() = 0;
  51
  52   // Caller owns returned pointer, but should call Destroy() on it (instead of
  53   // directly deleting) for proper destruction, as per the
  54   // VideoEncodeAccelerator interface.
  55   virtual scoped_ptr<VideoEncodeAccelerator> CreateVideoEncodeAccelerator() = 0;
  56
  57   // Allocate & delete native textures.
  58   virtual bool CreateTextures(int32 count,
  59                               const gfx::Size& size,
  60                               std::vector<uint32>* texture_ids,
  61                               std::vector<gpu::Mailbox>* texture_mailboxes,
  62                               uint32 texture_target) = 0;
  63   virtual void DeleteTexture(uint32 texture_id) = 0;
  64
  65   virtual void WaitSyncPoint(uint32 sync_point) = 0;
  66
  67   virtual scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
  68       const gfx::Size& size,
  69       gfx::BufferFormat format,
  70       gfx::BufferUsage usage) = 0;
  71
  72   virtual bool ShouldUseGpuMemoryBuffersForVideoFrames() const = 0;
  73   virtual unsigned ImageTextureTarget() = 0;
  74   // Pixel format of the hardware video frames created when GpuMemoryBuffers
  75   // video frames are enabled.
  76   virtual VideoPixelFormat VideoFrameOutputFormat() = 0;
  77
  78   virtual gpu::gles2::GLES2Interface* GetGLES2Interface() = 0;
  79
  80   // Allocate & return a shared memory segment.
  81   virtual scoped_ptr<base::SharedMemory> CreateSharedMemory(size_t size) = 0;
  82
  83   // Returns the task runner the video accelerator runs on.
  84   virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() = 0;
  85
  86   // Returns the supported codec profiles of video decode accelerator.
  87   virtual VideoDecodeAccelerator::SupportedProfiles
  88       GetVideoDecodeAcceleratorSupportedProfiles() = 0;
  89
  90   // Returns the supported codec profiles of video encode accelerator.
  91   virtual VideoEncodeAccelerator::SupportedProfiles
  92       GetVideoEncodeAcceleratorSupportedProfiles() = 0;
  93
  94  protected:
  95   friend class base::RefCountedThreadSafe<GpuVideoAcceleratorFactories>;
  96   virtual ~GpuVideoAcceleratorFactories() {}
  97 };
  98
  99 }  // namespace media
 100
 101 #endif  // MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_