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- // Copyright 2013 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_IO_SURFACE_H_
- #define UI_GL_GL_IMAGE_IO_SURFACE_H_
- #include <CoreVideo/CVPixelBuffer.h>
- #include <IOSurface/IOSurface.h>
- #include <stdint.h>
- #include "base/mac/scoped_cftyperef.h"
- #include "base/threading/thread_checker.h"
- #include "ui/gfx/buffer_types.h"
- #include "ui/gfx/color_space.h"
- #include "ui/gfx/generic_shared_memory_id.h"
- #include "ui/gl/gl_export.h"
- #include "ui/gl/gl_image.h"
- #if defined(__OBJC__)
- @class CALayer;
- #else
- typedef void* CALayer;
- #endif
- namespace gl {
- class GL_EXPORT GLImageIOSurface : public GLImage {
- public:
- static GLImageIOSurface* Create(const gfx::Size& size,
- unsigned internalformat);
- GLImageIOSurface(const GLImageIOSurface&) = delete;
- GLImageIOSurface& operator=(const GLImageIOSurface&) = delete;
- // Initialize to wrap of |io_surface|. The format of the plane to wrap is
- // specified in |format|. The index of the plane to wrap is
- // |io_surface_plane|. If |format| is a multi-planar format (e.g,
- // YUV_420_BIPLANAR or P010), then this will automatically convert from YUV
- // to RGB, and |io_surface_plane| is ignored.
- bool Initialize(IOSurfaceRef io_surface,
- uint32_t io_surface_plane,
- gfx::GenericSharedMemoryId io_surface_id,
- gfx::BufferFormat format);
- // IOSurfaces coming from video decode are wrapped in a CVPixelBuffer
- // and may be discarded if the owning CVPixelBuffer is destroyed. This
- // initialization will ensure that the CVPixelBuffer be retained for the
- // lifetime of the GLImage.
- bool InitializeWithCVPixelBuffer(CVPixelBufferRef cv_pixel_buffer,
- uint32_t io_surface_plane,
- gfx::GenericSharedMemoryId io_surface_id,
- gfx::BufferFormat format);
- // Overridden from GLImage:
- gfx::Size GetSize() override;
- unsigned GetInternalFormat() override;
- unsigned GetDataType() override;
- BindOrCopy ShouldBindOrCopy() override;
- bool BindTexImage(unsigned target) override;
- bool BindTexImageWithInternalformat(unsigned target,
- unsigned internalformat) 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 SetColorSpace(const gfx::ColorSpace& color_space) override;
- void Flush() override {}
- void OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
- uint64_t process_tracing_id,
- const std::string& dump_name) override;
- bool EmulatingRGB() const override;
- bool IsInUseByWindowServer() const override;
- void DisableInUseByWindowServer() override;
- gfx::GenericSharedMemoryId io_surface_id() const { return io_surface_id_; }
- base::ScopedCFTypeRef<IOSurfaceRef> io_surface();
- base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer();
- // For IOSurfaces that need manual conversion to a GL texture before being
- // sampled from, specify the color space in which to do the required YUV to
- // RGB transformation.
- void SetColorSpaceForYUVToRGBConversion(const gfx::ColorSpace& color_space);
- // Sets the color space of the GLImage without modifying the underlying
- // IOSurface. Callers should ensure the color spaces match.
- void SetColorSpaceShallow(const gfx::ColorSpace& color_space);
- static unsigned GetInternalFormatForTesting(gfx::BufferFormat format);
- // Downcasts from |image|. Returns |nullptr| on failure.
- static GLImageIOSurface* FromGLImage(GLImage* image);
- protected:
- GLImageIOSurface(const gfx::Size& size, unsigned internalformat);
- ~GLImageIOSurface() override;
- virtual bool BindTexImageImpl(unsigned target, unsigned internalformat);
- static bool ValidFormat(gfx::BufferFormat format);
- Type GetType() const override;
- class RGBConverter;
- const gfx::Size size_;
- // The "internalformat" exposed to the command buffer, which may not be
- // "internalformat" requested by the client.
- const unsigned internalformat_;
- // The "internalformat" requested by the client.
- const unsigned client_internalformat_;
- gfx::BufferFormat format_;
- base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
- base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer_;
- gfx::GenericSharedMemoryId io_surface_id_;
- // The plane that is bound for this image. If the plane is invalid, then
- // this is a multi-planar IOSurface, which will be copied instead of bound.
- static constexpr uint32_t kInvalidIOSurfacePlane = -1;
- uint32_t io_surface_plane_ = kInvalidIOSurfacePlane;
- base::ThreadChecker thread_checker_;
- // The default value of Rec. 601 is based on historical shader code.
- gfx::ColorSpace color_space_for_yuv_to_rgb_ = gfx::ColorSpace::CreateREC601();
- bool disable_in_use_by_window_server_ = false;
- };
- } // namespace gl
- #endif // UI_GL_GL_IMAGE_IO_SURFACE_H_
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