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 gfx::Size& size, unsigned internalformat);
  24
  25   static bool StrideInBytes(size_t width,
  26                             gfx::GpuMemoryBuffer::Format format,
  27                             size_t* stride_in_bytes);
  28
  29   bool Initialize(const unsigned char* memory,
  30                   gfx::GpuMemoryBuffer::Format format);
  31
  32   // Overridden from GLImage:
  33   void Destroy(bool have_context) override;
  34   gfx::Size GetSize() override;
  35   bool BindTexImage(unsigned target) override;
  36   void ReleaseTexImage(unsigned target) override {}
  37   bool CopyTexImage(unsigned target) override;
  38   void WillUseTexImage() override;
  39   void DidUseTexImage() override;
  40   void WillModifyTexImage() override {}
  41   void DidModifyTexImage() override {}
  42   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  43                             int z_order,
  44                             OverlayTransform transform,
  45                             const Rect& bounds_rect,
  46                             const RectF& crop_rect) override;
  47
  48  protected:
  49   ~GLImageMemory() override;
  50
  51  private:
  52   void DoBindTexImage(unsigned target);
  53
  54   const gfx::Size size_;
  55   const unsigned internalformat_;
  56   const unsigned char* memory_;
  57   gfx::GpuMemoryBuffer::Format format_;
  58   bool in_use_;
  59   unsigned target_;
  60   bool need_do_bind_tex_image_;
  61 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
  62     defined(USE_OZONE)
  63   unsigned egl_texture_id_;
  64   EGLImageKHR egl_image_;
  65 #endif
  66
  67   DISALLOW_COPY_AND_ASSIGN(GLImageMemory);
  68 };
  69
  70 }  // namespace gfx
  71
  72 #endif  // UI_GL_GL_IMAGE_MEMORY_H_