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
217
218
219
220
221
222
223
224
content / browser / media / session / media_session_android.cc [blame]
// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/media/session/media_session_android.h"
#include <utility>
#include "base/android/jni_array.h"
#include "base/time/time.h"
#include "content/browser/media/session/media_session_impl.h"
#include "content/browser/web_contents/web_contents_android.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/media_session.h"
#include "services/media_session/public/cpp/media_image.h"
#include "services/media_session/public/cpp/media_position.h"
#include "services/media_session/public/mojom/audio_focus.mojom.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "content/public/android/content_jni_headers/MediaSessionImpl_jni.h"
namespace content {
using base::android::JavaParamRef;
using base::android::ScopedJavaLocalRef;
struct MediaSessionAndroid::JavaObjectGetter {
static ScopedJavaLocalRef<jobject> GetJavaObject(
MediaSessionAndroid* session_android) {
return session_android->GetJavaObject();
}
};
MediaSessionAndroid::MediaSessionAndroid(MediaSessionImpl* session)
: media_session_(session) {
DCHECK(media_session_);
JNIEnv* env = base::android::AttachCurrentThread();
j_media_session_ =
Java_MediaSessionImpl_create(env, reinterpret_cast<intptr_t>(this));
session->AddObserver(observer_receiver_.BindNewPipeAndPassRemote());
}
MediaSessionAndroid::~MediaSessionAndroid() {
JNIEnv* env = base::android::AttachCurrentThread();
Java_MediaSessionImpl_mediaSessionDestroyed(env, j_media_session_);
}
// static
ScopedJavaLocalRef<jobject> JNI_MediaSessionImpl_GetMediaSessionFromWebContents(
JNIEnv* env,
const JavaParamRef<jobject>& j_contents_android) {
WebContents* contents = WebContents::FromJavaWebContents(j_contents_android);
if (!contents)
return ScopedJavaLocalRef<jobject>();
MediaSessionImpl* session =
static_cast<MediaSessionImpl*>(MediaSessionImpl::GetIfExists(contents));
return session ? MediaSessionAndroid::JavaObjectGetter::GetJavaObject(
session->GetMediaSessionAndroid())
: nullptr;
}
void MediaSessionAndroid::MediaSessionInfoChanged(
media_session::mojom::MediaSessionInfoPtr session_info) {
ScopedJavaLocalRef<jobject> j_local_session = GetJavaObject();
if (j_local_session.is_null())
return;
bool is_paused = session_info->playback_state ==
media_session::mojom::MediaPlaybackState::kPaused;
// The media session info changed event might be called more often than we
// need to notify Android since we only need a couple of bits of data.
// Therefore, we only notify Android if the bits have changed.
if (is_paused == is_paused_ &&
is_controllable_ == session_info->is_controllable) {
return;
}
is_paused_ = is_paused;
is_controllable_ = session_info->is_controllable;
JNIEnv* env = base::android::AttachCurrentThread();
Java_MediaSessionImpl_mediaSessionStateChanged(
env, j_local_session, session_info->is_controllable, is_paused);
}
void MediaSessionAndroid::MediaSessionMetadataChanged(
const std::optional<media_session::MediaMetadata>& metadata) {
ScopedJavaLocalRef<jobject> j_local_session = GetJavaObject();
if (j_local_session.is_null())
return;
JNIEnv* env = base::android::AttachCurrentThread();
// Avoid translating metadata through JNI if there is no Java observer.
if (!Java_MediaSessionImpl_hasObservers(env, j_local_session))
return;
ScopedJavaLocalRef<jobject> j_metadata;
if (metadata.has_value())
j_metadata = metadata.value().CreateJavaObject(env);
Java_MediaSessionImpl_mediaSessionMetadataChanged(env, j_local_session,
j_metadata);
}
void MediaSessionAndroid::MediaSessionActionsChanged(
const std::vector<media_session::mojom::MediaSessionAction>& actions) {
ScopedJavaLocalRef<jobject> j_local_session = GetJavaObject();
if (j_local_session.is_null())
return;
std::vector<int> actions_vec;
for (auto action : actions)
actions_vec.push_back(static_cast<int>(action));
JNIEnv* env = base::android::AttachCurrentThread();
Java_MediaSessionImpl_mediaSessionActionsChanged(
env, j_local_session, base::android::ToJavaIntArray(env, actions_vec));
}
void MediaSessionAndroid::MediaSessionImagesChanged(
const base::flat_map<media_session::mojom::MediaSessionImageType,
std::vector<media_session::MediaImage>>& images) {
ScopedJavaLocalRef<jobject> j_local_session = GetJavaObject();
if (j_local_session.is_null())
return;
JNIEnv* env = base::android::AttachCurrentThread();
// Android is only interested in the artwork images.
auto it = images.find(media_session::mojom::MediaSessionImageType::kArtwork);
if (it == images.end())
return;
// Avoid translating metadata through JNI if there is no Java observer.
if (!Java_MediaSessionImpl_hasObservers(env, j_local_session))
return;
Java_MediaSessionImpl_mediaSessionArtworkChanged(
env, j_local_session,
media_session::MediaImage::ToJavaArray(env, it->second));
}
void MediaSessionAndroid::MediaSessionPositionChanged(
const std::optional<media_session::MediaPosition>& position) {
ScopedJavaLocalRef<jobject> j_local_session = GetJavaObject();
if (j_local_session.is_null())
return;
JNIEnv* env = base::android::AttachCurrentThread();
if (position) {
Java_MediaSessionImpl_mediaSessionPositionChanged(
env, j_local_session, position->CreateJavaObject(env));
} else {
Java_MediaSessionImpl_mediaSessionPositionChanged(env, j_local_session,
nullptr);
}
}
void MediaSessionAndroid::Resume(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_obj) {
DCHECK(media_session_);
media_session_->Resume(MediaSession::SuspendType::kUI);
}
void MediaSessionAndroid::Suspend(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_obj) {
DCHECK(media_session_);
media_session_->Suspend(MediaSession::SuspendType::kUI);
}
void MediaSessionAndroid::Stop(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_obj) {
DCHECK(media_session_);
media_session_->Stop(MediaSession::SuspendType::kUI);
}
void MediaSessionAndroid::Seek(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_obj,
const jlong millis) {
DCHECK(media_session_);
DCHECK_NE(millis, 0)
<< "Attempted to seek by a missing number of milliseconds";
media_session_->Seek(base::Milliseconds(millis));
}
void MediaSessionAndroid::SeekTo(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_obj,
const jlong millis) {
DCHECK(media_session_);
DCHECK_GE(millis, 0) << "Attempted to seek to a negative position";
media_session_->SeekTo(base::Milliseconds(millis));
}
void MediaSessionAndroid::DidReceiveAction(JNIEnv* env,
const JavaParamRef<jobject>& obj,
int action) {
media_session_->DidReceiveAction(
static_cast<media_session::mojom::MediaSessionAction>(action));
}
void MediaSessionAndroid::RequestSystemAudioFocus(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_obj) {
DCHECK(media_session_);
media_session_->RequestSystemAudioFocus(
media_session::mojom::AudioFocusType::kGain);
}
ScopedJavaLocalRef<jobject> MediaSessionAndroid::GetJavaObject() {
JNIEnv* env = base::android::AttachCurrentThread();
return j_media_session_.AsLocalRef(env);
}
} // namespace content