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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
// Copyright 2014 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 "chromecast/renderer/cast_content_renderer_client.h"
#include <stdint.h>
#include <sys/sysinfo.h>
#include "base/command_line.h"
#include "base/location.h"
#include "base/macros.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/strings/string_number_conversions.h"
#include "base/thread_task_runner_handle.h"
#include "build/build_config.h"
#include "chromecast/base/chromecast_switches.h"
#include "chromecast/crash/cast_crash_keys.h"
#include "chromecast/media/base/media_caps.h"
#include "chromecast/renderer/cast_media_load_deferrer.h"
#include "chromecast/renderer/cast_render_process_observer.h"
#include "chromecast/renderer/key_systems_cast.h"
#include "chromecast/renderer/media/chromecast_media_renderer_factory.h"
#include "components/network_hints/renderer/prescient_networking_dispatcher.h"
#include "content/public/common/content_switches.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_view.h"
#include "content/public/renderer/render_view_observer.h"
#include "third_party/WebKit/public/platform/WebColor.h"
#include "third_party/WebKit/public/web/WebFrameWidget.h"
#include "third_party/WebKit/public/web/WebSettings.h"
#include "third_party/WebKit/public/web/WebView.h"
namespace chromecast {
namespace shell {
namespace {
#if defined(ARCH_CPU_ARM_FAMILY) && !defined(OS_ANDROID)
// This memory threshold is set for Chromecast. See the UMA histogram
// Platform.MeminfoMemFree when tuning.
// TODO(gunsch): These should be platform/product-dependent. Look into a way
// to move these to platform-specific repositories.
const int kCriticalMinFreeMemMB = 24;
const int kPollingIntervalMS = 5000;
void PlatformPollFreemem(void) {
struct sysinfo sys;
if (sysinfo(&sys) == -1) {
LOG(ERROR) << "platform_poll_freemem(): sysinfo failed";
} else {
int free_mem_mb = static_cast<int64_t>(sys.freeram) *
sys.mem_unit / (1024 * 1024);
if (free_mem_mb <= kCriticalMinFreeMemMB) {
// Memory is getting really low, we need to do whatever we can to
// prevent deadlocks and interfering with other processes.
base::MemoryPressureListener::NotifyMemoryPressure(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
}
}
// Setup next poll.
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE, base::Bind(&PlatformPollFreemem),
base::TimeDelta::FromMilliseconds(kPollingIntervalMS));
}
#endif
// Default background color to set for WebViews. WebColor is in ARGB format
// though the comment of WebColor says it is in RGBA.
const blink::WebColor kColorBlack = 0xFF000000;
class CastRenderViewObserver : content::RenderViewObserver {
public:
CastRenderViewObserver(CastContentRendererClient* client,
content::RenderView* render_view);
~CastRenderViewObserver() override {}
void DidClearWindowObject(blink::WebLocalFrame* frame) override;
private:
CastContentRendererClient* const client_;
DISALLOW_COPY_AND_ASSIGN(CastRenderViewObserver);
};
CastRenderViewObserver::CastRenderViewObserver(
CastContentRendererClient* client,
content::RenderView* render_view)
: content::RenderViewObserver(render_view),
client_(client) {
}
void CastRenderViewObserver::DidClearWindowObject(blink::WebLocalFrame* frame) {
client_->AddRendererNativeBindings(frame);
}
} // namespace
CastContentRendererClient::CastContentRendererClient()
: allow_hidden_media_playback_(
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kAllowHiddenMediaPlayback)) {
}
CastContentRendererClient::~CastContentRendererClient() {
}
void CastContentRendererClient::AddRendererNativeBindings(
blink::WebLocalFrame* frame) {
}
void CastContentRendererClient::RenderThreadStarted() {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
#if defined(ARCH_CPU_ARM_FAMILY) && !defined(OS_ANDROID)
PlatformPollFreemem();
#endif
// Set the initial known codecs mask.
if (command_line->HasSwitch(switches::kHdmiSinkSupportedCodecs)) {
int hdmi_codecs_mask;
if (base::StringToInt(command_line->GetSwitchValueASCII(
switches::kHdmiSinkSupportedCodecs),
&hdmi_codecs_mask)) {
::media::SetHdmiSinkCodecs(hdmi_codecs_mask);
}
}
cast_observer_.reset(new CastRenderProcessObserver());
prescient_networking_dispatcher_.reset(
new network_hints::PrescientNetworkingDispatcher());
std::string last_launched_app =
command_line->GetSwitchValueNative(switches::kLastLaunchedApp);
if (!last_launched_app.empty())
base::debug::SetCrashKeyValue(crash_keys::kLastApp, last_launched_app);
std::string previous_app =
command_line->GetSwitchValueNative(switches::kPreviousApp);
if (!previous_app.empty())
base::debug::SetCrashKeyValue(crash_keys::kPreviousApp, previous_app);
}
void CastContentRendererClient::RenderViewCreated(
content::RenderView* render_view) {
blink::WebView* webview = render_view->GetWebView();
if (webview) {
blink::WebFrameWidget* web_frame_widget = render_view->GetWebFrameWidget();
web_frame_widget->setBaseBackgroundColor(kColorBlack);
// The following settings express consistent behaviors across Cast
// embedders, though Android has enabled by default for mobile browsers.
webview->settings()->setShrinksViewportContentToFit(false);
webview->settings()->setMediaControlsOverlayPlayButtonEnabled(false);
// Scale 1 ensures window.innerHeight/Width match application resolution.
// PageScaleOverride is the 'user agent' value which overrides page
// settings (from meta viewport tag) - thus preventing inconsistency
// between Android and non-Android cast_shell.
webview->setDefaultPageScaleLimits(1.f, 1.f);
webview->setInitialPageScaleOverride(1.f);
// Disable application cache as Chromecast doesn't support off-line
// application running.
webview->settings()->setOfflineWebApplicationCacheEnabled(false);
}
// Note: RenderView will own the lifetime of its observer.
new CastRenderViewObserver(this, render_view);
}
void CastContentRendererClient::AddKeySystems(
std::vector< ::media::KeySystemInfo>* key_systems) {
AddChromecastKeySystems(key_systems);
}
#if !defined(OS_ANDROID)
scoped_ptr<::media::RendererFactory>
CastContentRendererClient::CreateMediaRendererFactory(
::content::RenderFrame* render_frame,
::media::GpuVideoAcceleratorFactories* gpu_factories,
const scoped_refptr<::media::MediaLog>& media_log) {
const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
if (!cmd_line->HasSwitch(switches::kEnableCmaMediaPipeline))
return nullptr;
return scoped_ptr<::media::RendererFactory>(
new chromecast::media::ChromecastMediaRendererFactory(
gpu_factories, render_frame->GetRoutingID()));
}
#endif
blink::WebPrescientNetworking*
CastContentRendererClient::GetPrescientNetworking() {
return prescient_networking_dispatcher_.get();
}
void CastContentRendererClient::DeferMediaLoad(
content::RenderFrame* render_frame,
bool render_frame_has_played_media_before,
const base::Closure& closure) {
if (!render_frame->IsHidden() || allow_hidden_media_playback_) {
closure.Run();
return;
}
// Lifetime is tied to |render_frame| via content::RenderFrameObserver.
new CastMediaLoadDeferrer(render_frame, closure);
}
} // namespace shell
} // namespace chromecast
|
