ui/gl/gl_image_memory.h

   1 // Copyright 2014 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 UI_GL_GL_IMAGE_MEMORY_H_
   6 #define UI_GL_GL_IMAGE_MEMORY_H_
   7
   8 #include "ui/gl/gl_image.h"
   9
  10 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
  11     defined(USE_OZONE)
  12 #include <EGL/egl.h>
  13 #include <EGL/eglext.h>
  14 #endif
  15
  16 #include "base/numerics/safe_math.h"
  17 #include "ui/gfx/gpu_memory_buffer.h"
  18
  19 namespace gfx {
  20
  21 class GL_EXPORT GLImageMemory : public GLImage {
  22  public:
  23   GLImageMemory(const Size& size, unsigned internalformat);
  24
  25   static bool StrideInBytes(size_t width,
  26                             GpuMemoryBuffer::Format format,
  27                             size_t* stride_in_bytes);
  28
  29   bool Initialize(const unsigned char* memory,
  30                   GpuMemoryBuffer::Format format);
  31
  32   // Overridden from GLImage:
  33   void Destroy(bool have_context) override;
  34   Size GetSize() override;
  35   unsigned GetInternalFormat() override;
  36   bool BindTexImage(unsigned target) override;
  37   void ReleaseTexImage(unsigned target) override {}
  38   bool CopyTexImage(unsigned target) override;
  39   void WillUseTexImage() override;
  40   void DidUseTexImage() override;
  41   void WillModifyTexImage() override {}
  42   void DidModifyTexImage() override {}
  43   bool ScheduleOverlayPlane(AcceleratedWidget widget,
  44                             int z_order,
  45                             OverlayTransform transform,
  46                             const Rect& bounds_rect,
  47                             const RectF& crop_rect) override;
  48
  49  protected:
  50   ~GLImageMemory() override;
  51
  52  private:
  53   void DoBindTexImage(unsigned target);
  54
  55   const Size size_;
  56   const unsigned internalformat_;
  57   const unsigned char* memory_;
  58   GpuMemoryBuffer::Format format_;
  59   bool in_use_;
  60   unsigned target_;
  61   bool need_do_bind_tex_image_;
  62 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
  63     defined(USE_OZONE)
  64   unsigned egl_texture_id_;
  65   EGLImageKHR egl_image_;
  66 #endif
  67
  68   DISALLOW_COPY_AND_ASSIGN(GLImageMemory);
  69 };
  70
  71 }  // namespace gfx
  72
  73 #endif  // UI_GL_GL_IMAGE_MEMORY_H_