| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GL_GL_IMAGE_MEMORY_H_ |
| #define UI_GL_GL_IMAGE_MEMORY_H_ |
| |
| #include "ui/gl/gl_image.h" |
| |
| #include <stddef.h> |
| |
| #include "base/memory/weak_ptr.h" |
| #include "base/numerics/safe_math.h" |
| #include "ui/gfx/buffer_types.h" |
| #include "ui/gl/gl_export.h" |
| |
| namespace gl { |
| class GLContext; |
| class GLSurface; |
| |
| class GL_EXPORT GLImageMemory : public GLImage { |
| public: |
| explicit GLImageMemory(const gfx::Size& size); |
| |
| GLImageMemory(const GLImageMemory&) = delete; |
| GLImageMemory& operator=(const GLImageMemory&) = delete; |
| |
| bool Initialize(const unsigned char* memory, |
| gfx::BufferFormat format, |
| size_t stride); |
| |
| // Safe downcast. Returns |nullptr| on failure. |
| static GLImageMemory* FromGLImage(GLImage* image); |
| |
| // Overridden from GLImage: |
| gfx::Size GetSize() override; |
| unsigned GetInternalFormat() override; |
| unsigned GetDataFormat() override; |
| unsigned GetDataType() override; |
| BindOrCopy ShouldBindOrCopy() override; |
| bool BindTexImage(unsigned target) override; |
| void ReleaseTexImage(unsigned target) override {} |
| bool CopyTexImage(unsigned target) override; |
| bool CopyTexSubImage(unsigned target, |
| const gfx::Point& offset, |
| const gfx::Rect& rect) override; |
| void Flush() override {} |
| Type GetType() const override; |
| |
| const unsigned char* memory() { return memory_; } |
| size_t stride() const { return stride_; } |
| gfx::BufferFormat format() const { return format_; } |
| |
| protected: |
| ~GLImageMemory() override; |
| |
| private: |
| static bool ValidFormat(gfx::BufferFormat format); |
| |
| const gfx::Size size_; |
| const unsigned char* memory_; |
| gfx::BufferFormat format_; |
| size_t stride_; |
| |
| unsigned buffer_ = 0; |
| // The context/surface from which the |buffer_| is created. |
| base::WeakPtr<GLContext> original_context_; |
| base::WeakPtr<GLSurface> original_surface_; |
| size_t buffer_bytes_ = 0; |
| int memcpy_tasks_ = 0; |
| }; |
| |
| } // namespace gl |
| |
| #endif // UI_GL_GL_IMAGE_MEMORY_H_ |