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
173
174
175
176
177
178
179
180
181
182
|
// Copyright (c) 2011 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_image_data_proxy.h"
#include <string.h> // For memcpy
#include <vector>
#include "base/logging.h"
#include "build/build_config.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_resource_tracker.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/host_resource.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/thunk.h"
#include "skia/ext/platform_canvas.h"
#include "ui/gfx/surface/transport_dib.h"
namespace ppapi {
namespace proxy {
ImageData::ImageData(const HostResource& resource,
const PP_ImageDataDesc& desc,
ImageHandle handle)
: Resource(resource),
desc_(desc) {
#if defined(OS_WIN)
transport_dib_.reset(TransportDIB::CreateWithHandle(handle));
#else
transport_dib_.reset(TransportDIB::Map(handle));
#endif
}
ImageData::~ImageData() {
}
thunk::PPB_ImageData_API* ImageData::AsPPB_ImageData_API() {
return this;
}
PP_Bool ImageData::Describe(PP_ImageDataDesc* desc) {
memcpy(desc, &desc_, sizeof(PP_ImageDataDesc));
return PP_TRUE;
}
void* ImageData::Map() {
if (!mapped_canvas_.get()) {
mapped_canvas_.reset(transport_dib_->GetPlatformCanvas(desc_.size.width,
desc_.size.height));
if (!mapped_canvas_.get())
return NULL;
}
const SkBitmap& bitmap =
skia::GetTopDevice(*mapped_canvas_)->accessBitmap(true);
bitmap.lockPixels();
return bitmap.getAddr(0, 0);
}
void ImageData::Unmap() {
// TODO(brettw) have a way to unmap a TransportDIB. Currently this isn't
// possible since deleting the TransportDIB also frees all the handles.
// We need to add a method to TransportDIB to release the handles.
}
int32_t ImageData::GetSharedMemory(int* /* handle */,
uint32_t* /* byte_count */) {
// Not supported in the proxy (this method is for actually implementing the
// proxy in the host).
return PP_ERROR_NOACCESS;
}
#if defined(OS_WIN)
const ImageHandle ImageData::NullHandle = NULL;
#elif defined(OS_MACOSX)
const ImageHandle ImageData::NullHandle = ImageHandle();
#else
const ImageHandle ImageData::NullHandle = 0;
#endif
ImageHandle ImageData::HandleFromInt(int32_t i) {
#if defined(OS_WIN)
return reinterpret_cast<ImageHandle>(i);
#elif defined(OS_MACOSX)
return ImageHandle(i, false);
#else
return static_cast<ImageHandle>(i);
#endif
}
PPB_ImageData_Proxy::PPB_ImageData_Proxy(Dispatcher* dispatcher)
: InterfaceProxy(dispatcher) {
}
PPB_ImageData_Proxy::~PPB_ImageData_Proxy() {
}
// static
PP_Resource PPB_ImageData_Proxy::CreateProxyResource(PP_Instance instance,
PP_ImageDataFormat format,
const PP_Size& size,
PP_Bool init_to_zero) {
PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
if (!dispatcher)
return 0;
HostResource result;
std::string image_data_desc;
ImageHandle image_handle = ImageData::NullHandle;
dispatcher->Send(new PpapiHostMsg_PPBImageData_Create(
kApiID, instance, format, size, init_to_zero,
&result, &image_data_desc, &image_handle));
if (result.is_null() || image_data_desc.size() != sizeof(PP_ImageDataDesc))
return 0;
// We serialize the PP_ImageDataDesc just by copying to a string.
PP_ImageDataDesc desc;
memcpy(&desc, image_data_desc.data(), sizeof(PP_ImageDataDesc));
return (new ImageData(result, desc, image_handle))->GetReference();
}
bool PPB_ImageData_Proxy::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_ImageData_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBImageData_Create, OnHostMsgCreate)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PPB_ImageData_Proxy::OnHostMsgCreate(PP_Instance instance,
int32_t format,
const PP_Size& size,
PP_Bool init_to_zero,
HostResource* result,
std::string* image_data_desc,
ImageHandle* result_image_handle) {
*result_image_handle = ImageData::NullHandle;
thunk::EnterResourceCreation enter(instance);
if (enter.failed())
return;
PP_Resource resource = enter.functions()->CreateImageData(
instance, static_cast<PP_ImageDataFormat>(format), size, init_to_zero);
if (!resource)
return;
result->SetHostResource(instance, resource);
// Get the description, it's just serialized as a string.
thunk::EnterResourceNoLock<thunk::PPB_ImageData_API> enter_resource(
resource, false);
PP_ImageDataDesc desc;
if (enter_resource.object()->Describe(&desc) == PP_TRUE) {
image_data_desc->resize(sizeof(PP_ImageDataDesc));
memcpy(&(*image_data_desc)[0], &desc, sizeof(PP_ImageDataDesc));
}
// Get the shared memory handle.
uint32_t byte_count = 0;
int32_t handle = 0;
if (enter_resource.object()->GetSharedMemory(&handle, &byte_count) == PP_OK) {
#if defined(OS_WIN)
ImageHandle ih = ImageData::HandleFromInt(handle);
*result_image_handle = dispatcher()->ShareHandleWithRemote(ih, false);
#else
*result_image_handle = ImageData::HandleFromInt(handle);
#endif
}
}
} // namespace proxy
} // namespace ppapi
|
