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// 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_GFX_NATIVE_PIXMAP_H_
#define UI_GFX_NATIVE_PIXMAP_H_
#include "base/bind.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "ui/gfx/buffer_types.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/native_pixmap_handle.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/overlay_transform.h"
namespace gfx {
class Rect;
class RectF;
class GpuFence;
// This represents a buffer that can be directly imported via GL for
// rendering, or exported via dma-buf fds.
class NativePixmap : public base::RefCountedThreadSafe<NativePixmap> {
public:
NativePixmap() {}
virtual bool AreDmaBufFdsValid() const = 0;
virtual int GetDmaBufFd(size_t plane) const = 0;
virtual uint32_t GetDmaBufPitch(size_t plane) const = 0;
virtual size_t GetDmaBufOffset(size_t plane) const = 0;
virtual size_t GetDmaBufPlaneSize(size_t plane) const = 0;
// Return the number of non-interleaved "color" planes.
virtual size_t GetNumberOfPlanes() const = 0;
// The following methods return format, modifier and size of the buffer,
// respectively.
virtual gfx::BufferFormat GetBufferFormat() const = 0;
virtual uint64_t GetBufferFormatModifier() const = 0;
virtual gfx::Size GetBufferSize() const = 0;
// Return an id that is guaranteed to be unique and equal for all instances
// of this NativePixmap backed by the same buffer, for the duration of its
// lifetime. If such id cannot be generated, 0 (an invalid id) is returned.
//
// TODO(posciak): crbug.com/771863, remove this once a different mechanism
// for protected shared memory buffers is implemented.
virtual uint32_t GetUniqueId() const = 0;
// Sets the overlay plane to switch to at the next page flip.
// |widget| specifies the screen to display this overlay plane on.
// |plane_z_order| specifies the stacking order of the plane relative to the
// main framebuffer located at index 0.
// |plane_transform| specifies how the buffer is to be transformed during
// composition.
// |display_bounds| specify where it is supposed to be on the screen.
// |crop_rect| specifies the region within the buffer to be placed
// inside |display_bounds|. This is specified in texture coordinates, in the
// range of [0,1].
// |enable_blend| specifies if the plane should be alpha blended, with premul
// apha, when scanned out.
// |acquire_fences| specifies gpu fences to wait on before the pixmap is ready
// to be displayed. These fence are fired when the gpu has finished writing to
// the pixmap.
// |release_fences| specifies gpu fences that are signalled when the pixmap
// has been displayed and is ready for reuse.
virtual bool ScheduleOverlayPlane(
gfx::AcceleratedWidget widget,
int plane_z_order,
gfx::OverlayTransform plane_transform,
const gfx::Rect& display_bounds,
const gfx::RectF& crop_rect,
bool enable_blend,
std::vector<gfx::GpuFence> acquire_fences,
std::vector<gfx::GpuFence> release_fences) = 0;
// Export the buffer for sharing across processes.
// Any file descriptors in the exported handle are owned by the caller.
virtual gfx::NativePixmapHandle ExportHandle() = 0;
protected:
virtual ~NativePixmap() {}
private:
friend class base::RefCountedThreadSafe<NativePixmap>;
DISALLOW_COPY_AND_ASSIGN(NativePixmap);
};
} // namespace gfx
#endif // UI_GFX_NATIVE_PIXMAP_H_
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