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 CopyTexSubImage(unsigned target,
  39                        const Point& offset,
  40                        const Rect& rect) override;
  41   void WillUseTexImage() override;
  42   void DidUseTexImage() override;
  43   void WillModifyTexImage() override {}
  44   void DidModifyTexImage() override {}
  45   bool ScheduleOverlayPlane(AcceleratedWidget widget,
  46                             int z_order,
  47                             OverlayTransform transform,
  48                             const Rect& bounds_rect,
  49                             const RectF& crop_rect) override;
  50
  51  protected:
  52   ~GLImageMemory() override;
  53
  54  private:
  55   void DoBindTexImage(unsigned target);
  56
  57   const Size size_;
  58   const unsigned internalformat_;
  59   const unsigned char* memory_;
  60   GpuMemoryBuffer::Format format_;
  61   bool in_use_;
  62   unsigned target_;
  63   bool need_do_bind_tex_image_;
  64 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
  65     defined(USE_OZONE)
  66   unsigned egl_texture_id_;
  67   EGLImageKHR egl_image_;
  68 #endif
  69
  70   DISALLOW_COPY_AND_ASSIGN(GLImageMemory);
  71 };
  72
  73 }  // namespace gfx
  74
  75 #endif  // UI_GL_GL_IMAGE_MEMORY_H_