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
|
// 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/message_loop/message_loop_proxy.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_thread_impl.h"
#include "content/renderer/render_view_impl.h"
#include "media/base/bind_to_current_loop.h"
#include "url/gurl.h"
namespace content {
PepperPlatformVideoCapture::PepperPlatformVideoCapture(
const base::WeakPtr<RenderViewImpl>& render_view,
const std::string& device_id,
const GURL& document_url,
PepperVideoCaptureHost* handler)
: render_view_(render_view),
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.
if (render_view_.get()) {
pending_open_device_id_ = GetMediaDeviceManager()->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 (render_view_.get()) {
if (!label_.empty()) {
GetMediaDeviceManager()->CloseDevice(label_);
label_.clear();
}
if (pending_open_device_) {
GetMediaDeviceManager()->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;
succeeded = succeeded && render_view_.get();
if (succeeded) {
label_ = label;
session_id_ = GetMediaDeviceManager()->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,
const media::VideoCaptureFormat& format,
const base::TimeTicks& estimated_capture_time) {
if (handler_ && !stop_capture_cb_.is_null())
handler_->OnFrameReady(frame, format);
}
PepperMediaDeviceManager* PepperPlatformVideoCapture::GetMediaDeviceManager() {
return PepperMediaDeviceManager::GetForRenderView(render_view_.get());
}
} // namespace content
|
