src/gpu/command_buffer/service/async_pixel_transfer_delegate.h

   1 // Copyright (c) 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 GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_DELEGATE_H_
   6 #define GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_DELEGATE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/synchronization/lock.h"
  13 #include "base/time/time.h"
  14 #include "gpu/command_buffer/common/buffer.h"
  15 #include "gpu/gpu_export.h"
  16 #include "ui/gl/gl_bindings.h"
  17
  18 namespace base {
  19 class SharedMemory;
  20 }
  21
  22 namespace gpu {
  23
  24 struct AsyncTexImage2DParams {
  25   GLenum target;
  26   GLint level;
  27   GLenum internal_format;
  28   GLsizei width;
  29   GLsizei height;
  30   GLint border;
  31   GLenum format;
  32   GLenum type;
  33 };
  34
  35 struct AsyncTexSubImage2DParams {
  36   GLenum target;
  37   GLint level;
  38   GLint xoffset;
  39   GLint yoffset;
  40   GLsizei width;
  41   GLsizei height;
  42   GLenum format;
  43   GLenum type;
  44 };
  45
  46 class AsyncMemoryParams {
  47  public:
  48   AsyncMemoryParams(scoped_refptr<Buffer> buffer,
  49                     uint32 data_offset,
  50                     uint32 data_size);
  51   ~AsyncMemoryParams();
  52
  53   scoped_refptr<Buffer> buffer() const { return buffer_; }
  54   uint32 data_size() const { return data_size_; }
  55   uint32 data_offset() const { return data_offset_; }
  56   void* GetDataAddress() const {
  57     return buffer_->GetDataAddress(data_offset_, data_size_);
  58   }
  59
  60  private:
  61   scoped_refptr<Buffer> buffer_;
  62   uint32 data_offset_;
  63   uint32 data_size_;
  64 };
  65
  66 class AsyncPixelTransferUploadStats
  67     : public base::RefCountedThreadSafe<AsyncPixelTransferUploadStats> {
  68  public:
  69   AsyncPixelTransferUploadStats();
  70
  71   void AddUpload(base::TimeDelta transfer_time);
  72   int GetStats(base::TimeDelta* total_texture_upload_time);
  73
  74  private:
  75   friend class base::RefCountedThreadSafe<AsyncPixelTransferUploadStats>;
  76
  77   ~AsyncPixelTransferUploadStats();
  78
  79   int texture_upload_count_;
  80   base::TimeDelta total_texture_upload_time_;
  81   base::Lock lock_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(AsyncPixelTransferUploadStats);
  84 };
  85
  86 class GPU_EXPORT AsyncPixelTransferDelegate {
  87  public:
  88   virtual ~AsyncPixelTransferDelegate();
  89
  90   // The callback occurs on the caller thread, once the texture is
  91   // safe/ready to be used.
  92   virtual void AsyncTexImage2D(
  93       const AsyncTexImage2DParams& tex_params,
  94       const AsyncMemoryParams& mem_params,
  95       const base::Closure& bind_callback) = 0;
  96
  97   virtual void AsyncTexSubImage2D(
  98       const AsyncTexSubImage2DParams& tex_params,
  99       const AsyncMemoryParams& mem_params) = 0;
 100
 101   // Returns true if there is a transfer in progress.
 102   virtual bool TransferIsInProgress() = 0;
 103
 104   // Block until the specified transfer completes.
 105   virtual void WaitForTransferCompletion() = 0;
 106
 107  protected:
 108   AsyncPixelTransferDelegate();
 109
 110  private:
 111   DISALLOW_COPY_AND_ASSIGN(AsyncPixelTransferDelegate);
 112 };
 113
 114 }  // namespace gpu
 115
 116 #endif  // GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_DELEGATE_H_
 117