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
|
// 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 "content/renderer/pepper/pepper_platform_video_capture.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "content/renderer/media/video_capture_impl_manager.h"
#include "content/renderer/pepper/pepper_media_device_manager.h"
#include "content/renderer/pepper/pepper_video_capture_host.h"
#include "content/renderer/render_frame_impl.h"
#include "content/renderer/render_thread_impl.h"
#include "media/base/bind_to_current_loop.h"
#include "media/base/video_frame.h"
#include "url/gurl.h"
namespace content {
PepperPlatformVideoCapture::PepperPlatformVideoCapture(
int render_frame_id,
const std::string& device_id,
const GURL& document_url,
PepperVideoCaptureHost* handler)
: render_frame_id_(render_frame_id),
device_id_(device_id),
session_id_(0),
handler_(handler),
pending_open_device_(false),
pending_open_device_id_(-1),
weak_factory_(this) {
// We need to open the device and obtain the label and session ID before
// initializing.
PepperMediaDeviceManager* const device_manager = GetMediaDeviceManager();
if (device_manager) {
pending_open_device_id_ = device_manager->OpenDevice(
PP_DEVICETYPE_DEV_VIDEOCAPTURE,
device_id,
document_url,
base::Bind(&PepperPlatformVideoCapture::OnDeviceOpened,
weak_factory_.GetWeakPtr()));
pending_open_device_ = true;
}
}
void PepperPlatformVideoCapture::StartCapture(
const media::VideoCaptureParams& params) {
DCHECK(thread_checker_.CalledOnValidThread());
if (!stop_capture_cb_.is_null())
return;
VideoCaptureImplManager* manager =
RenderThreadImpl::current()->video_capture_impl_manager();
stop_capture_cb_ =
manager->StartCapture(session_id_,
params,
media::BindToCurrentLoop(base::Bind(
&PepperPlatformVideoCapture::OnStateUpdate,
weak_factory_.GetWeakPtr())),
media::BindToCurrentLoop(base::Bind(
&PepperPlatformVideoCapture::OnFrameReady,
weak_factory_.GetWeakPtr())));
}
void PepperPlatformVideoCapture::StopCapture() {
DCHECK(thread_checker_.CalledOnValidThread());
if (stop_capture_cb_.is_null())
return;
stop_capture_cb_.Run();
stop_capture_cb_.Reset();
}
void PepperPlatformVideoCapture::DetachEventHandler() {
handler_ = NULL;
StopCapture();
if (!release_device_cb_.is_null()) {
release_device_cb_.Run();
release_device_cb_.Reset();
}
if (!label_.empty()) {
PepperMediaDeviceManager* const device_manager = GetMediaDeviceManager();
if (device_manager)
device_manager->CloseDevice(label_);
label_.clear();
}
if (pending_open_device_) {
PepperMediaDeviceManager* const device_manager = GetMediaDeviceManager();
if (device_manager)
device_manager->CancelOpenDevice(pending_open_device_id_);
pending_open_device_ = false;
pending_open_device_id_ = -1;
}
}
PepperPlatformVideoCapture::~PepperPlatformVideoCapture() {
DCHECK(stop_capture_cb_.is_null());
DCHECK(release_device_cb_.is_null());
DCHECK(label_.empty());
DCHECK(!pending_open_device_);
}
void PepperPlatformVideoCapture::OnDeviceOpened(int request_id,
bool succeeded,
const std::string& label) {
pending_open_device_ = false;
pending_open_device_id_ = -1;
PepperMediaDeviceManager* const device_manager = GetMediaDeviceManager();
succeeded = succeeded && device_manager;
if (succeeded) {
label_ = label;
session_id_ = device_manager->GetSessionID(
PP_DEVICETYPE_DEV_VIDEOCAPTURE, label);
VideoCaptureImplManager* manager =
RenderThreadImpl::current()->video_capture_impl_manager();
release_device_cb_ = manager->UseDevice(session_id_);
}
if (handler_)
handler_->OnInitialized(succeeded);
}
void PepperPlatformVideoCapture::OnStateUpdate(VideoCaptureState state) {
if (!handler_)
return;
switch (state) {
case VIDEO_CAPTURE_STATE_STARTED:
handler_->OnStarted();
break;
case VIDEO_CAPTURE_STATE_STOPPED:
handler_->OnStopped();
break;
case VIDEO_CAPTURE_STATE_PAUSED:
handler_->OnPaused();
break;
case VIDEO_CAPTURE_STATE_ERROR:
handler_->OnError();
break;
default:
NOTREACHED() << "Unexpected state: " << state << ".";
}
}
void PepperPlatformVideoCapture::OnFrameReady(
const scoped_refptr<media::VideoFrame>& frame,
base::TimeTicks estimated_capture_time) {
if (handler_ && !stop_capture_cb_.is_null())
handler_->OnFrameReady(frame);
}
PepperMediaDeviceManager* PepperPlatformVideoCapture::GetMediaDeviceManager() {
RenderFrameImpl* const render_frame =
RenderFrameImpl::FromRoutingID(render_frame_id_);
return render_frame ?
PepperMediaDeviceManager::GetForRenderFrame(render_frame).get() : NULL;
}
} // namespace content
|
