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
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/wayland/test/shm_buffer_factory.h"
#include "base/memory/platform_shared_memory_handle.h"
#include "base/memory/platform_shared_memory_region.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "surface-augmenter-client-protocol.h"
namespace exo::wayland::test {
namespace {
constexpr int32_t kBytesPerPixel = 4;
} // namespace
ShmBufferFactory::ShmBufferFactory() = default;
ShmBufferFactory::~ShmBufferFactory() = default;
bool ShmBufferFactory::Init(wl_shm* shm,
int32_t pool_size,
BufferListener* buffer_listener) {
base::UnsafeSharedMemoryRegion shm_region =
base::UnsafeSharedMemoryRegion::Create(pool_size);
if (!shm_region.IsValid()) {
return false;
}
base::subtle::PlatformSharedMemoryRegion platform_shm =
base::UnsafeSharedMemoryRegion::TakeHandleForSerialization(
std::move(shm_region));
base::subtle::ScopedFDPair fd_pair = platform_shm.PassPlatformHandle();
shm_pool_.reset(wl_shm_create_pool(shm, fd_pair.fd.get(), pool_size));
buffer_listener_ = buffer_listener;
return true;
}
std::unique_ptr<TestBuffer> ShmBufferFactory::CreateBuffer(int32_t offset,
int32_t pixel_width,
int32_t pixel_height,
int32_t stride,
uint32_t format) {
if (stride == -1) {
stride = pixel_width * kBytesPerPixel;
}
auto buffer_resource =
std::unique_ptr<wl_buffer, decltype(&wl_buffer_destroy)>(
wl_shm_pool_create_buffer(shm_pool_.get(), offset, pixel_width,
pixel_height, stride, format),
&wl_buffer_destroy);
auto buffer = std::make_unique<TestBuffer>(std::move(buffer_resource));
if (buffer_listener_) {
buffer->SetListener(buffer_listener_);
}
return buffer;
}
} // namespace exo::wayland::test
|
