1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_OZONE_PLATFORM_DRM_GPU_DRM_DUMB_BUFFER_H_
#define UI_OZONE_PLATFORM_DRM_GPU_DRM_DUMB_BUFFER_H_
#include <stddef.h>
#include <stdint.h>
#include "base/memory/raw_ptr_exclusion.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "ui/ozone/platform/drm/gpu/drm_framebuffer.h"
class SkCanvas;
struct SkImageInfo;
class SkSurface;
namespace ui {
class DrmDevice;
// Wrapper for a DRM allocated buffer. Keeps track of the native properties of
// the buffer and wraps the pixel memory into a SkSurface which can be used to
// draw into using Skia.
class DrmDumbBuffer {
public:
enum class HandleCloser {
DESTROY_DUMB,
GEM_CLOSE,
};
explicit DrmDumbBuffer(const scoped_refptr<DrmDevice>& drm);
DrmDumbBuffer(const DrmDumbBuffer&) = delete;
DrmDumbBuffer& operator=(const DrmDumbBuffer&) = delete;
~DrmDumbBuffer();
// Allocates a new dumb buffer, maps it, and wraps it in an SkSurface.
// |info| determines the buffer characteristics (size, color format).
bool Initialize(const SkImageInfo& info);
// Imports an existing framebuffer, maps it, and wraps it in an SkSurface.
bool InitializeFromFramebuffer(uint32_t framebuffer_id);
SkCanvas* GetCanvas() const;
SkSurface* surface() const { return surface_.get(); }
uint32_t GetHandle() const;
gfx::Size GetSize() const;
uint32_t stride() const { return stride_; }
private:
bool MapDumbBuffer(const SkImageInfo& info);
const scoped_refptr<DrmDevice> drm_;
// Length of a row of pixels.
uint32_t stride_ = 0;
// Buffer handle used by the DRM allocator.
uint32_t handle_ = 0;
// Method of closing |handle_|.
HandleCloser handle_closer_ = HandleCloser::DESTROY_DUMB;
// Base address for memory mapping.
// This field is not a raw_ptr<> because it was filtered by the rewriter
// for: #addr-of
RAW_PTR_EXCLUSION void* mmap_base_ = nullptr;
// Size for memory mapping.
size_t mmap_size_ = 0;
// Wrapper around the native pixel memory.
sk_sp<SkSurface> surface_;
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_DRM_GPU_DRM_DUMB_BUFFER_H_
|
