content/renderer/media/renderer_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 CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
   6 #define CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/synchronization/waitable_event.h"
  14 #include "content/child/thread_safe_sender.h"
  15 #include "content/common/content_export.h"
  16 #include "media/renderers/gpu_video_accelerator_factories.h"
  17 #include "ui/gfx/geometry/size.h"
  18
  19 namespace base {
  20 class WaitableEvent;
  21 }
  22
  23 namespace gpu {
  24 class GpuMemoryBufferManager;
  25 }
  26
  27 namespace content {
  28 class ContextProviderCommandBuffer;
  29 class GLHelper;
  30 class GpuChannelHost;
  31 class WebGraphicsContext3DCommandBufferImpl;
  32
  33 // Glue code to expose functionality needed by media::GpuVideoAccelerator to
  34 // RenderViewImpl.  This class is entirely an implementation detail of
  35 // RenderViewImpl and only has its own header to allow extraction of its
  36 // implementation from render_view_impl.cc which is already far too large.
  37 //
  38 // The RendererGpuVideoAcceleratorFactories can be constructed on any thread,
  39 // but subsequent calls to all public methods of the class must be called from
  40 // the |task_runner_|, as provided during construction.
  41 class CONTENT_EXPORT RendererGpuVideoAcceleratorFactories
  42     : public media::GpuVideoAcceleratorFactories {
  43  public:
  44   // Takes a ref on |gpu_channel_host| and tests |context| for loss before each
  45   // use.  Safe to call from any thread.
  46   static scoped_refptr<RendererGpuVideoAcceleratorFactories> Create(
  47       GpuChannelHost* gpu_channel_host,
  48       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
  49       const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
  50       unsigned image_texture_target,
  51       bool enable_video_accelerator);
  52
  53   bool IsGpuVideoAcceleratorEnabled() override;
  54   // media::GpuVideoAcceleratorFactories implementation.
  55   scoped_ptr<media::VideoDecodeAccelerator> CreateVideoDecodeAccelerator()
  56       override;
  57   scoped_ptr<media::VideoEncodeAccelerator> CreateVideoEncodeAccelerator()
  58       override;
  59   // Creates textures and produces them into mailboxes. Returns true on success
  60   // or false on failure.
  61   bool CreateTextures(int32 count,
  62                       const gfx::Size& size,
  63                       std::vector<uint32>* texture_ids,
  64                       std::vector<gpu::Mailbox>* texture_mailboxes,
  65                       uint32 texture_target) override;
  66   void DeleteTexture(uint32 texture_id) override;
  67   void WaitSyncPoint(uint32 sync_point) override;
  68
  69   scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
  70       const gfx::Size& size,
  71       gfx::BufferFormat format,
  72       gfx::BufferUsage usage) override;
  73
  74   bool IsTextureRGSupported() override;
  75   unsigned ImageTextureTarget() override;
  76   gpu::gles2::GLES2Interface* GetGLES2Interface() override;
  77   scoped_ptr<base::SharedMemory> CreateSharedMemory(size_t size) override;
  78   scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() override;
  79
  80   std::vector<media::VideoDecodeAccelerator::SupportedProfile>
  81       GetVideoDecodeAcceleratorSupportedProfiles() override;
  82   std::vector<media::VideoEncodeAccelerator::SupportedProfile>
  83       GetVideoEncodeAcceleratorSupportedProfiles() override;
  84
  85  private:
  86   friend class base::RefCountedThreadSafe<RendererGpuVideoAcceleratorFactories>;
  87   RendererGpuVideoAcceleratorFactories(
  88       GpuChannelHost* gpu_channel_host,
  89       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
  90       const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
  91       unsigned image_texture_target,
  92       bool enable_video_accelerator);
  93
  94   ~RendererGpuVideoAcceleratorFactories() override;
  95
  96   // Helper to bind |context_provider| to the |task_runner_| thread after
  97   // construction.
  98   void BindContext();
  99
 100   // Helper to get a pointer to the WebGraphicsContext3DCommandBufferImpl,
 101   // if it has not been lost yet.
 102   WebGraphicsContext3DCommandBufferImpl* GetContext3d();
 103   GLHelper* GetGLHelper();
 104
 105   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 106   scoped_refptr<GpuChannelHost> gpu_channel_host_;
 107   scoped_refptr<ContextProviderCommandBuffer> context_provider_;
 108
 109   const unsigned image_texture_target_;
 110   // Whether video acceleration encoding/decoding should be enabled.
 111   const bool video_accelerator_enabled_;
 112
 113   scoped_ptr<GLHelper> gl_helper_;
 114   gpu::GpuMemoryBufferManager* const gpu_memory_buffer_manager_;
 115
 116   // For sending requests to allocate shared memory in the Browser process.
 117   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 118
 119   DISALLOW_COPY_AND_ASSIGN(RendererGpuVideoAcceleratorFactories);
 120 };
 121
 122 }  // namespace content
 123
 124 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_ACCELERATOR_FACTORIES_H_