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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
// Copyright 2021 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.
#include "media/fuchsia/common/sysmem_client.h"
#include <lib/sys/cpp/component_context.h>
#include <zircon/rights.h>
#include <algorithm>
#include "base/bind.h"
#include "base/fuchsia/fuchsia_logging.h"
#include "base/fuchsia/process_context.h"
#include "base/process/process_handle.h"
#include "media/fuchsia/common/vmo_buffer.h"
namespace media {
SysmemCollectionClient::SysmemCollectionClient(
fuchsia::sysmem::Allocator* allocator,
fuchsia::sysmem::BufferCollectionTokenPtr collection_token)
: allocator_(allocator), collection_token_(std::move(collection_token)) {
DCHECK(allocator_);
DCHECK(collection_token_);
}
SysmemCollectionClient::~SysmemCollectionClient() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (collection_)
collection_->Close();
}
void SysmemCollectionClient::Initialize(
fuchsia::sysmem::BufferCollectionConstraints constraints,
base::StringPiece name,
uint32_t name_priority) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
writable_ = (constraints.usage.cpu & fuchsia::sysmem::cpuUsageWrite) ==
fuchsia::sysmem::cpuUsageWrite;
allocator_->BindSharedCollection(std::move(collection_token_),
collection_.NewRequest());
collection_.set_error_handler(
fit::bind_member(this, &SysmemCollectionClient::OnError));
collection_->SetName(name_priority, std::string(name));
// If Sync() is not required then constraints can be set immediately.
if (sync_completion_closures_.empty()) {
collection_->SetConstraints(/*have_constraints=*/true,
std::move(constraints));
return;
}
sync_completion_closures_.push_back(
base::BindOnce(&fuchsia::sysmem::BufferCollection::SetConstraints,
base::Unretained(collection_.get()),
/*have_constraints=*/true, std::move(constraints)));
collection_->Sync(
fit::bind_member(this, &SysmemCollectionClient::OnSyncComplete));
}
void SysmemCollectionClient::CreateSharedToken(
GetSharedTokenCB cb,
base::StringPiece debug_client_name,
uint64_t debug_client_id) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
DCHECK(collection_token_);
fuchsia::sysmem::BufferCollectionTokenPtr token;
collection_token_->Duplicate(ZX_RIGHT_SAME_RIGHTS, token.NewRequest());
if (!debug_client_name.empty()) {
token->SetDebugClientInfo(std::string(debug_client_name), debug_client_id);
}
sync_completion_closures_.push_back(
base::BindOnce(std::move(cb), std::move(token)));
}
void SysmemCollectionClient::AcquireBuffers(AcquireBuffersCB cb) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
DCHECK(!collection_token_);
if (!collection_) {
std::move(cb).Run({}, {});
return;
}
acquire_buffers_cb_ = std::move(cb);
collection_->WaitForBuffersAllocated(
fit::bind_member(this, &SysmemCollectionClient::OnBuffersAllocated));
}
void SysmemCollectionClient::OnSyncComplete() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
std::vector<base::OnceClosure> sync_closures =
std::move(sync_completion_closures_);
for (auto& cb : sync_closures) {
std::move(cb).Run();
}
}
void SysmemCollectionClient::OnBuffersAllocated(
zx_status_t status,
fuchsia::sysmem::BufferCollectionInfo_2 buffer_collection_info) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (status != ZX_OK) {
ZX_LOG(ERROR, status) << "Failed to allocate sysmem buffers.";
OnError(status);
return;
}
if (acquire_buffers_cb_) {
auto buffers = VmoBuffer::CreateBuffersFromSysmemCollection(
&buffer_collection_info, writable_);
std::move(acquire_buffers_cb_)
.Run(std::move(buffers), buffer_collection_info.settings);
}
}
void SysmemCollectionClient::OnError(zx_status_t status) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
ZX_DLOG(ERROR, status) << "Connection to BufferCollection was disconnected.";
collection_.Unbind();
if (acquire_buffers_cb_)
std::move(acquire_buffers_cb_).Run({}, {});
}
SysmemAllocatorClient::SysmemAllocatorClient(base::StringPiece client_name) {
allocator_ = base::ComponentContextForProcess()
->svc()
->Connect<fuchsia::sysmem::Allocator>();
allocator_->SetDebugClientInfo(std::string(client_name),
base::GetCurrentProcId());
allocator_.set_error_handler([](zx_status_t status) {
// Just log a warning. We will handle BufferCollection the failure when
// trying to create a new BufferCollection.
ZX_DLOG(WARNING, status)
<< "The fuchsia.sysmem.Allocator channel was disconnected.";
});
}
SysmemAllocatorClient::~SysmemAllocatorClient() = default;
fuchsia::sysmem::BufferCollectionTokenPtr
SysmemAllocatorClient::CreateNewToken() {
fuchsia::sysmem::BufferCollectionTokenPtr collection_token;
allocator_->AllocateSharedCollection(collection_token.NewRequest());
return collection_token;
}
std::unique_ptr<SysmemCollectionClient>
SysmemAllocatorClient::AllocateNewCollection() {
return std::make_unique<SysmemCollectionClient>(allocator_.get(),
CreateNewToken());
}
std::unique_ptr<SysmemCollectionClient>
SysmemAllocatorClient::BindSharedCollection(
fuchsia::sysmem::BufferCollectionTokenPtr token) {
return std::make_unique<SysmemCollectionClient>(allocator_.get(),
std::move(token));
}
} // namespace media
|
