Пример Android-приложения для видеоконференции
Данный пример может использоваться для участия в видеоконференции для трех пользователей на Web Call Server и позволяет публиковать WebRTC-поток.
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Ниже расположены контролы для отключения/включения аудио и видео для публикуемого потока, поле ввода текстового сообщения и лог сообщений.
Работа с кодом примера
Для разбора кода возьмем класс ConferenceActivity.java примера conference, который доступен для скачивания в соответствующей сборке 1.0.1.38.
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| Code Block | ||||
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@Override
public void onState(final Room room) {
/**
* After joining, Room object with data of the room is received.
* Method Room.getParticipants() is used to check the number of already connected participants.
* The method returns collection of Participant objects.
* The collection size is determined, and, if the maximum allowed number (in this case, three) has already been reached, the user leaves the room with method Room.leave().
*/
if (room.getParticipants().size() >= 3) {
room.leave(null);
runOnUiThread(
new Runnable() {
@Override
public void run() {
mJoinStatus.setText("Room is full");
mJoinButton.setEnabled(true);
}
}
);
return;
}
final StringBuffer chatState = new StringBuffer("participants: ");
/**
* Iterating through the collection of the other participants returned by method Room.getParticipants().
* There is corresponding Participant object for each participant.
*/
for (final Participant participant : room.getParticipants()) {
/**
* A player view is assigned to each of the other participants in the room.
*/
final ParticipantView participantView = freeViews.poll();
if (participantView != null) {
chatState.append(participant.getName()).append(",");
busyViews.put(participant.getName(), participantView);
/**
* Playback of the stream being published by the other participant is started with method Participant.play().
* SurfaceViewRenderer to be used to display the video stream is passed when the method is called.
*/
participant.play(participantView.surfaceViewRenderer);
runOnUiThread(...
new Runnable() {}
@Override}
public void run() {
participantView.login.setText(participant.getName());
}
}
);
}
}
runOnUiThread(
new Runnable() {
@Override
public void run() {
mJoinButton.setText(R.string.action_leave);
mJoinButton.setTag(R.string.action_leave);
mJoinButton.setEnabled(true);
mJoinStatus.setText("");
mPublishButton.setEnabled(true);
mSendButton.setEnabled(true);
if (room.getParticipants().size() == 0) {
addMessageHistory("chat", "room is empty");
} else {
addMessageHistory("chat", chatState.substring(0, chatState.length() - 1));
}
}
}
);
} |
6. Публикация видеопотока.
Room.publish() код
Методу передаются:
- SurfaceViewRenderer, который будет использоваться для отображения видео с камеры
- параметр record, определяющий, будет ли записываться публикуемый поток
| Code Block | ||||
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case PUBLISH_REQUEST_CODE: { if (grantResults.length == 0 || grantResults[0] != PackageManager.PERMISSION_GRANTED || grantResults[1] != PackageManager.PERMISSION_GRANTED) { Log.i(TAG, "Permission has been denied by user"); } else { mPublishButton.setEnabled(false); /** * Stream is created and published with method Room.publish(). * SurfaceViewRenderer to be used to display video from the camera is passed to the method. */ boolean record = mRecord.isChecked(); StreamOptions streamOptions = new StreamOptions(); streamOptions.setRecord(record); stream = room.publish(localRenderer, streamOptions); /** * Callback function for stream status change is added to make appropriate changes in controls of the interface when stream is being published. */ stream.on(new StreamStatusEvent() { @Override public void onStreamStatus(final Stream stream, final StreamStatus streamStatus) { runOnUiThread(new Runnable() { @Override public void run() { if (StreamStatus.PUBLISHING.equals(streamStatus)) { mPublishButton.setText(R.string.action_stop); mPublishButton.setTag(R.string.action_stop); mMuteAudio.setEnabled(true); mMuteVideo.setEnabled(true); } else { mPublishButton.setText(R.string.action_publish); mPublishButton.setTag(R.string.action_publish); mMuteAudio.setEnabled(false); mMuteAudio.setChecked(false); mMuteVideo.setEnabled(false); mMuteVideo.setChecked(false); ConferenceActivity.this.stream = null; } if (mJoinButton.getTag() == null || Integer.valueOf(R.string.action_join).equals(mJoinButton.getTag())) {... } |
6. Публикация видеопотока.
Room.publish() код
Методу передаются:
- SurfaceViewRenderer, который будет использоваться для отображения видео с камеры
- параметр record, определяющий, будет ли записываться публикуемый поток
| Code Block | ||||
|---|---|---|---|---|
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case PUBLISH_REQUEST_CODE: { if (grantResults.length == 0 || grantResults[0] != PackageManager.PERMISSION_GRANTED || grantResults[1] != mPublishButton.setEnabled(false);PackageManager.PERMISSION_GRANTED) { Log.i(TAG, "Permission has been denied by user"); } else { } else { mPublishButton.setEnabled(false); /** * Stream is created and published with method mPublishButtonRoom.setEnabledpublish(true);. * SurfaceViewRenderer to be used to display video from the camera is } passed to the method. */ boolean record = mPublishStatusmRecord.setTextisChecked(streamStatus.toString()); StreamOptions streamOptions = }new StreamOptions(); }streamOptions.setRecord(record); stream = }room.publish(localRenderer, streamOptions); });... Log.i(TAG, "Permission has been granted by user"); } } |
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