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
183
184
185
186
187
188
189
|
// Copyright (c) 2012 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/shared_impl/ppb_video_capture_shared.h"
#include "base/logging.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/shared_impl/ppb_device_ref_shared.h"
#include "ppapi/shared_impl/ppb_resource_array_shared.h"
namespace ppapi {
PPB_VideoCapture_Shared::PPB_VideoCapture_Shared(PP_Instance instance)
: Resource(OBJECT_IS_IMPL, instance),
open_state_(BEFORE_OPEN),
status_(PP_VIDEO_CAPTURE_STATUS_STOPPED),
devices_(NULL),
resource_object_type_(OBJECT_IS_IMPL) {
}
PPB_VideoCapture_Shared::PPB_VideoCapture_Shared(
const HostResource& host_resource)
: Resource(OBJECT_IS_PROXY, host_resource),
open_state_(BEFORE_OPEN),
status_(PP_VIDEO_CAPTURE_STATUS_STOPPED),
devices_(NULL),
resource_object_type_(OBJECT_IS_PROXY) {
}
PPB_VideoCapture_Shared::~PPB_VideoCapture_Shared() {
}
thunk::PPB_VideoCapture_API* PPB_VideoCapture_Shared::AsPPB_VideoCapture_API() {
return this;
}
int32_t PPB_VideoCapture_Shared::EnumerateDevices(
PP_Resource* devices,
const PP_CompletionCallback& callback) {
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (TrackedCallback::IsPending(enumerate_devices_callback_))
return PP_ERROR_INPROGRESS;
return InternalEnumerateDevices(devices, callback);
}
int32_t PPB_VideoCapture_Shared::Open(
const std::string& device_id,
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count,
const PP_CompletionCallback& callback) {
if (open_state_ != BEFORE_OPEN)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(open_callback_))
return PP_ERROR_INPROGRESS;
return InternalOpen(device_id, requested_info, buffer_count, callback);
}
int32_t PPB_VideoCapture_Shared::StartCapture() {
if (open_state_ != OPENED ||
!SetStatus(PP_VIDEO_CAPTURE_STATUS_STARTING, false)) {
return PP_ERROR_FAILED;
}
return InternalStartCapture();
}
int32_t PPB_VideoCapture_Shared::ReuseBuffer(uint32_t buffer) {
return InternalReuseBuffer(buffer);
}
int32_t PPB_VideoCapture_Shared::StopCapture() {
if (open_state_ != OPENED ||
!SetStatus(PP_VIDEO_CAPTURE_STATUS_STOPPING, false)) {
return PP_ERROR_FAILED;
}
return InternalStopCapture();
}
void PPB_VideoCapture_Shared::Close() {
if (open_state_ == CLOSED)
return;
InternalClose();
open_state_ = CLOSED;
if (TrackedCallback::IsPending(open_callback_))
open_callback_->PostAbort();
}
int32_t PPB_VideoCapture_Shared::StartCapture0_1(
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count) {
if (open_state_ == BEFORE_OPEN) {
if (TrackedCallback::IsPending(open_callback_))
return PP_ERROR_FAILED;
open_state_ = OPENED;
} else if (open_state_ == CLOSED) {
return PP_ERROR_FAILED;
}
if (!SetStatus(PP_VIDEO_CAPTURE_STATUS_STARTING, false))
return PP_ERROR_FAILED;
return InternalStartCapture0_1(requested_info, buffer_count);
}
const std::vector<DeviceRefData>& PPB_VideoCapture_Shared::GetDeviceRefData(
) const {
return InternalGetDeviceRefData();
}
void PPB_VideoCapture_Shared::OnEnumerateDevicesComplete(
int32_t result,
const std::vector<DeviceRefData>& devices) {
DCHECK(TrackedCallback::IsPending(enumerate_devices_callback_));
if (result == PP_OK && devices_) {
*devices_ = PPB_DeviceRef_Shared::CreateResourceArray(
resource_object_type_, pp_instance(), devices);
}
devices_ = NULL;
TrackedCallback::ClearAndRun(&enumerate_devices_callback_, result);
}
void PPB_VideoCapture_Shared::OnOpenComplete(int32_t result) {
if (open_state_ == BEFORE_OPEN && result == PP_OK)
open_state_ = OPENED;
// The callback may have been aborted by Close(), or the open operation is
// completed synchronously.
if (TrackedCallback::IsPending(open_callback_))
TrackedCallback::ClearAndRun(&open_callback_, result);
}
bool PPB_VideoCapture_Shared::SetStatus(PP_VideoCaptureStatus_Dev status,
bool forced) {
if (!forced) {
switch (status) {
case PP_VIDEO_CAPTURE_STATUS_STOPPED:
if (status_ != PP_VIDEO_CAPTURE_STATUS_STOPPING)
return false;
break;
case PP_VIDEO_CAPTURE_STATUS_STARTING:
if (status_ != PP_VIDEO_CAPTURE_STATUS_STOPPED)
return false;
break;
case PP_VIDEO_CAPTURE_STATUS_STARTED:
switch (status_) {
case PP_VIDEO_CAPTURE_STATUS_STARTING:
case PP_VIDEO_CAPTURE_STATUS_PAUSED:
break;
default:
return false;
}
break;
case PP_VIDEO_CAPTURE_STATUS_PAUSED:
switch (status_) {
case PP_VIDEO_CAPTURE_STATUS_STARTING:
case PP_VIDEO_CAPTURE_STATUS_STARTED:
break;
default:
return false;
}
break;
case PP_VIDEO_CAPTURE_STATUS_STOPPING:
switch (status_) {
case PP_VIDEO_CAPTURE_STATUS_STARTING:
case PP_VIDEO_CAPTURE_STATUS_STARTED:
case PP_VIDEO_CAPTURE_STATUS_PAUSED:
break;
default:
return false;
}
break;
}
}
status_ = status;
return true;
}
} // namespace ppapi
|
