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                             BufferFormat format,
  27                             size_t* stride_in_bytes);
  28
  29   bool Initialize(const unsigned char* memory, BufferFormat format);
  30
  31   // Overridden from GLImage:
  32   void Destroy(bool have_context) override;
  33   Size GetSize() override;
  34   unsigned GetInternalFormat() override;
  35   bool BindTexImage(unsigned target) override;
  36   void ReleaseTexImage(unsigned target) override {}
  37   bool CopyTexSubImage(unsigned target,
  38                        const Point& offset,
  39                        const Rect& rect) override;
  40   void WillUseTexImage() override;
  41   void DidUseTexImage() override;
  42   void WillModifyTexImage() override {}
  43   void DidModifyTexImage() override {}
  44   bool ScheduleOverlayPlane(AcceleratedWidget widget,
  45                             int z_order,
  46                             OverlayTransform transform,
  47                             const Rect& bounds_rect,
  48                             const RectF& crop_rect) override;
  49
  50  protected:
  51   ~GLImageMemory() override;
  52
  53  private:
  54   void DoBindTexImage(unsigned target);
  55
  56   const Size size_;
  57   const unsigned internalformat_;
  58   const unsigned char* memory_;
  59   BufferFormat format_;
  60   bool in_use_;
  61   unsigned target_;
  62   bool need_do_bind_tex_image_;
  63 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
  64     defined(USE_OZONE)
  65   unsigned egl_texture_id_;
  66   EGLImageKHR egl_image_;
  67 #endif
  68
  69   DISALLOW_COPY_AND_ASSIGN(GLImageMemory);
  70 };
  71
  72 }  // namespace gfx
  73
  74 #endif  // UI_GL_GL_IMAGE_MEMORY_H_