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
|
// Copyright (c) 2010 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 "ppapi/proxy/ppb_buffer_proxy.h"
#include <vector>
#include "base/logging.h"
#include "build/build_config.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/dev/ppb_buffer_dev.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_messages.h"
namespace pp {
namespace proxy {
class Buffer : public PluginResource {
public:
Buffer(int memory_handle, uint32_t size);
virtual ~Buffer();
// Resource overrides.
virtual Buffer* AsBuffer() { return this; }
uint32_t size() const { return size_; }
void* Map();
void Unmap();
private:
int memory_handle_;
uint32_t size_;
void* mapped_data_;
DISALLOW_COPY_AND_ASSIGN(Buffer);
};
Buffer::Buffer(int memory_handle, uint32_t size)
: memory_handle_(memory_handle),
size_(size),
mapped_data_(NULL) {
}
Buffer::~Buffer() {
Unmap();
}
void* Buffer::Map() {
// TODO(brettw) implement this.
return mapped_data_;
}
void Buffer::Unmap() {
// TODO(brettw) implement this.
}
namespace {
PP_Resource Create(PP_Instance instance, uint32_t size) {
PP_Resource result = 0;
int32_t shm_handle = -1;
PluginDispatcher::Get()->Send(
new PpapiHostMsg_PPBBuffer_Create(
INTERFACE_ID_PPB_BUFFER, instance, size,
&result, &shm_handle));
if (!result)
return 0;
linked_ptr<Buffer> object(new Buffer(static_cast<int>(shm_handle), size));
PluginDispatcher::Get()->plugin_resource_tracker()->AddResource(
result, object);
return result;
}
PP_Bool IsBuffer(PP_Resource resource) {
Buffer* object = PluginResource::GetAs<Buffer>(resource);
return BoolToPPBool(!!object);
}
PP_Bool Describe(PP_Resource resource, uint32_t* size_in_bytes) {
Buffer* object = PluginResource::GetAs<Buffer>(resource);
if (!object) {
*size_in_bytes = 0;
return PP_FALSE;
}
*size_in_bytes = object->size();
return PP_TRUE;
}
void* Map(PP_Resource resource) {
Buffer* object = PluginResource::GetAs<Buffer>(resource);
if (!object)
return NULL;
return object->Map();
}
void Unmap(PP_Resource resource) {
Buffer* object = PluginResource::GetAs<Buffer>(resource);
if (object)
object->Unmap();
}
const PPB_Buffer_Dev ppb_buffer = {
&Create,
&IsBuffer,
&Describe,
&Map,
&Unmap,
};
} // namespace
PPB_Buffer_Proxy::PPB_Buffer_Proxy(Dispatcher* dispatcher,
const void* target_interface)
: InterfaceProxy(dispatcher, target_interface) {
}
PPB_Buffer_Proxy::~PPB_Buffer_Proxy() {
}
const void* PPB_Buffer_Proxy::GetSourceInterface() const {
return &ppb_buffer;
}
InterfaceID PPB_Buffer_Proxy::GetInterfaceId() const {
return INTERFACE_ID_PPB_BUFFER;
}
bool PPB_Buffer_Proxy::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_Buffer_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBBuffer_Create, OnMsgCreate)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
// TODO(brettw) handle bad messages!
return handled;
}
void PPB_Buffer_Proxy::OnMsgCreate(PP_Instance instance,
uint32_t size,
PP_Resource* result_resource,
int* result_shm_handle) {
*result_resource = ppb_buffer_target()->Create(instance, size);
// TODO(brettw) set the shm handle from a trusted interface.
*result_shm_handle = 0;
}
} // namespace proxy
} // namespace pp
|
