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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
// 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.
#include "gpu/ipc/service/gpu_memory_buffer_factory_io_surface.h"
#include <vector>
#include "base/apple/mach_logging.h"
#include "base/logging.h"
#include "base/memory/platform_shared_memory_region.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "base/numerics/safe_conversions.h"
#include "base/unguessable_token.h"
#include "gpu/ipc/common/gpu_client_ids.h"
#include "ui/gfx/buffer_format_util.h"
#include "ui/gfx/mac/io_surface.h"
namespace gpu {
namespace {
// A GpuMemoryBuffer with client_id = 0 behaves like anonymous shared memory.
const int kAnonymousClientId = 0;
} // namespace
GpuMemoryBufferFactoryIOSurface::GpuMemoryBufferFactoryIOSurface() = default;
GpuMemoryBufferFactoryIOSurface::~GpuMemoryBufferFactoryIOSurface() = default;
gfx::GpuMemoryBufferHandle
GpuMemoryBufferFactoryIOSurface::CreateGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
const gfx::Size& size,
const gfx::Size& framebuffer_size,
gfx::BufferFormat format,
gfx::BufferUsage usage,
int client_id,
SurfaceHandle surface_handle) {
DCHECK_NE(client_id, kAnonymousClientId);
DCHECK_EQ(framebuffer_size, size);
bool should_clear = true;
base::apple::ScopedCFTypeRef<IOSurfaceRef> io_surface =
gfx::CreateIOSurface(size, format, should_clear);
if (!io_surface) {
LOG(ERROR) << "Failed to allocate IOSurface.";
return {};
}
gfx::GpuMemoryBufferHandle handle;
handle.type = gfx::IO_SURFACE_BUFFER;
handle.id = id;
handle.io_surface = io_surface;
#if BUILDFLAG(IS_IOS)
handle.io_surface_mach_port.reset(IOSurfaceCreateMachPort(io_surface.get()));
const void* io_surface_base_addr = IOSurfaceGetBaseAddress(io_surface.get());
const size_t io_surface_alloc_size = IOSurfaceGetAllocSize(io_surface.get());
memory_object_size_t alloc_size = io_surface_alloc_size;
base::apple::ScopedMachSendRight named_right;
kern_return_t kr = mach_make_memory_entry_64(
mach_task_self(), &alloc_size,
reinterpret_cast<memory_object_offset_t>(io_surface_base_addr),
VM_PROT_READ | VM_PROT_WRITE,
base::apple::ScopedMachSendRight::Receiver(named_right).get(),
MACH_PORT_NULL);
if (kr != KERN_SUCCESS) {
MACH_LOG(ERROR, kr) << "GpuMemoryBufferFactoryIOSurface::"
"CreateGpuMemoryBuffer mach_make_memory_entry_64";
return {};
}
DCHECK_GE(alloc_size, io_surface_alloc_size);
using base::subtle::PlatformSharedMemoryRegion;
auto platform_shared_memory_region = PlatformSharedMemoryRegion::Take(
std::move(named_right), PlatformSharedMemoryRegion::Mode::kUnsafe,
alloc_size, base::UnguessableToken::Create());
if (!platform_shared_memory_region.IsValid()) {
LOG(ERROR) << "Failed to create PlatformSharedMemoryRegion";
return {};
}
handle.io_surface_shared_memory_region =
base::UnsafeSharedMemoryRegion::Deserialize(
std::move(platform_shared_memory_region));
if (!handle.io_surface_shared_memory_region.IsValid()) {
LOG(ERROR) << "Failed to create UnsafeSharedMemoryRegion";
return {};
}
for (size_t plane = 0;
plane < gfx::NumberOfPlanesForLinearBufferFormat(format); plane++) {
handle.io_surface_plane_strides[plane] = base::checked_cast<uint32_t>(
IOSurfaceGetBytesPerRowOfPlane(io_surface.get(), plane));
const void* io_surface_plane_addr =
IOSurfaceGetBaseAddressOfPlane(io_surface.get(), plane);
handle.io_surface_plane_offsets[plane] = base::checked_cast<uint32_t>(
reinterpret_cast<intptr_t>(io_surface_plane_addr) -
reinterpret_cast<intptr_t>(io_surface_base_addr));
}
#endif
return handle;
}
void GpuMemoryBufferFactoryIOSurface::DestroyGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
int client_id) {}
bool GpuMemoryBufferFactoryIOSurface::FillSharedMemoryRegionWithBufferContents(
gfx::GpuMemoryBufferHandle buffer_handle,
base::UnsafeSharedMemoryRegion shared_memory) {
return false;
}
} // namespace gpu
|
