1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.testingcamera2;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.view.LayoutInflater;
22import android.view.Surface;
23import android.view.View;
24import android.widget.AdapterView;
25import android.widget.AdapterView.OnItemSelectedListener;
26import android.widget.ArrayAdapter;
27import android.widget.Spinner;
28import android.widget.ToggleButton;
29
30import org.xmlpull.v1.XmlPullParser;
31import org.xmlpull.v1.XmlPullParserException;
32
33import java.io.IOException;
34import java.util.List;
35import java.util.Locale;
36
37public class TargetControlPane extends ControlPane {
38    // XML attributes
39
40    /** Name of pane tag */
41    private static final String PANE_NAME = "target_pane";
42
43    /** Attribute: ID for pane (integer) */
44    private static final String PANE_ID = "id";
45
46    /** Attribute: Type of output (string), value must be one of OutputViewType.getXmlName() */
47    private static final String OUTPUT_TYPE = "type";
48
49    // End XML attributes
50
51    /**
52     * Available output view types
53     *
54     * <p>Adding new entries to this list requires updating createOutputView() as
55     * well.</p>
56     */
57    private enum OutputViewType {
58        SURFACE_VIEW,
59        TEXTURE_VIEW,
60        IMAGE_READER,
61        RENDERSCRIPT,
62        MEDIA_RECORDER,
63        MEDIA_CODEC;
64
65        static String getXmlName(OutputViewType type) {
66            return type.toString().toLowerCase(Locale.US);
67        }
68    }
69
70    private static int mTargetPaneIdCounter = 0;
71
72    private int mPaneId;
73
74    private List<CameraControlPane> mCameraPanes;
75
76    private Spinner mCameraSpinner;
77    private ToggleButton mCameraConfigureToggle;
78
79    private Spinner mOutputSpinner;
80
81    private TargetSubPane mCurrentOutput;
82
83    private int mOrientation = 0;
84
85    /**
86     * Constructor for tooling only
87     */
88    public TargetControlPane(Context context, AttributeSet attrs) {
89        super(context, attrs, null, null);
90
91        mPaneId = 0;
92        setUpUI(context);
93    }
94
95    public TargetControlPane(TestingCamera21 tc, AttributeSet attrs, StatusListener listener) {
96        super(tc, attrs, listener, tc.getPaneTracker());
97
98        mPaneId = mTargetPaneIdCounter++;
99        setUpUI(tc);
100
101    }
102
103    public TargetControlPane(TestingCamera21 tc, XmlPullParser configParser, StatusListener listener)
104            throws XmlPullParserException, IOException {
105        super(tc, null, listener, tc.getPaneTracker());
106
107        configParser.require(XmlPullParser.START_TAG, XmlPullParser.NO_NAMESPACE, PANE_NAME);
108
109        int paneId = getAttributeInt(configParser, PANE_ID, -1);
110        if (paneId == -1) {
111            mPaneId = mTargetPaneIdCounter++;
112        } else {
113            mPaneId = paneId;
114            if (mPaneId >= mTargetPaneIdCounter) {
115                mTargetPaneIdCounter = mPaneId + 1;
116            }
117        }
118
119        configParser.next();
120        configParser.require(XmlPullParser.END_TAG, XmlPullParser.NO_NAMESPACE, PANE_NAME);
121
122        setUpUI(tc);
123    }
124
125    /**
126     * Get this target's Surface aimed at the given camera pane. If no target
127     * for that camera is defined by this pane, returns null.
128     *
129     * @param paneName ID of the camera pane to return a Surface for
130     * @return a Surface to configure for the camera device, or null if none
131     *         available
132     */
133    public Surface getTargetSurfaceForCameraPane(String paneName) {
134        if (paneName == null || mCurrentOutput == null) return null;
135
136        boolean isMyTarget =
137                paneName.equals(mCameraSpinner.getSelectedItem()) &&
138                mCameraConfigureToggle.isChecked();
139        return isMyTarget ? mCurrentOutput.getOutputSurface() : null;
140    }
141
142    public void notifyPaneEvent(ControlPane sourcePane, PaneTracker.PaneEvent event) {
143        switch (event) {
144        case NEW_CAMERA_SELECTED:
145            if (mCameraPanes.size() > 0
146                    && sourcePane == mCameraPanes.get(mCameraSpinner.getSelectedItemPosition())) {
147                if (mCurrentOutput != null) {
148                    mCurrentOutput.setTargetCameraPane((CameraControlPane) sourcePane);
149                }
150            }
151            break;
152        default:
153            super.notifyPaneEvent(sourcePane, event);
154        }
155    }
156
157    public void onOrientationChange(int orientation) {
158        mOrientation = orientation;
159        if (mCurrentOutput != null) {
160            mCurrentOutput.setUiOrientation(mOrientation);
161        }
162    }
163
164    private void setUpUI(Context context) {
165
166        String paneTitle =
167                String.format(Locale.US, "%s %d",
168                        context.getResources().getString(R.string.target_pane_title), mPaneId);
169        this.setName(paneTitle);
170
171        LayoutInflater inflater =
172                (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
173
174        inflater.inflate(R.layout.target_pane, this);
175
176        mCameraSpinner = (Spinner) findViewById(R.id.target_pane_camera_spinner);
177        mCameraSpinner.setOnItemSelectedListener(mCameraSpinnerListener);
178        mCameraConfigureToggle = (ToggleButton) findViewById(R.id.target_pane_configure_toggle);
179        mCameraConfigureToggle.setChecked(true);
180
181        mOutputSpinner = (Spinner) findViewById(R.id.target_pane_output_spinner);
182        mOutputSpinner.setOnItemSelectedListener(mOutputSpinnerListener);
183
184        OutputViewType[] outputTypes = OutputViewType.values();
185        String[] outputSpinnerItems = new String[outputTypes.length];
186
187        for (int i = 0; i < outputTypes.length; i++) {
188            outputSpinnerItems[i] = outputTypes[i].toString();
189        }
190        mOutputSpinner.setAdapter(new ArrayAdapter<String>(getContext(), R.layout.spinner_item,
191                outputSpinnerItems));
192
193        mPaneTracker.addPaneListener(new CameraPanesListener());
194        mCameraPanes = mPaneTracker.getPanes(CameraControlPane.class);
195        updateCameraPaneList();
196
197    }
198
199    private class CameraPanesListener extends PaneTracker.PaneSetChangedListener<CameraControlPane> {
200        public CameraPanesListener() {
201            super(CameraControlPane.class);
202        }
203
204        @Override
205        public void onPaneAdded(ControlPane pane) {
206            mCameraPanes.add((CameraControlPane) pane);
207            updateCameraPaneList();
208        }
209
210        @Override
211        public void onPaneRemoved(ControlPane pane) {
212            mCameraPanes.remove((CameraControlPane) pane);
213            updateCameraPaneList();
214        }
215    }
216
217    private OnItemSelectedListener mCameraSpinnerListener = new OnItemSelectedListener() {
218        @Override
219        public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
220            updateSubPaneCamera();
221        }
222
223        @Override
224        public void onNothingSelected(AdapterView<?> arg0) {
225
226        }
227    };
228
229    private OnItemSelectedListener mOutputSpinnerListener = new OnItemSelectedListener() {
230        @Override
231        public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
232            if (mCurrentOutput != null) {
233                TargetControlPane.this.removeView(mCurrentOutput);
234            }
235            OutputViewType outputType =
236                    OutputViewType.valueOf((String) mOutputSpinner.getSelectedItem());
237            mCurrentOutput = createOutputView(outputType);
238            if (mCurrentOutput != null) {
239                TargetControlPane.this.addView(mCurrentOutput);
240                mCurrentOutput.setUiOrientation(mOrientation);
241                updateSubPaneCamera();
242            }
243        }
244
245        @Override
246        public void onNothingSelected(AdapterView<?> arg0) {
247            if (mCurrentOutput != null) {
248                TargetControlPane.this.removeView(mCurrentOutput);
249                mCurrentOutput = null;
250            }
251        }
252    };
253
254    private void updateCameraPaneList() {
255        String currentSelection = (String) mCameraSpinner.getSelectedItem();
256        int newSelectionIndex = 0;
257        String[] cameraSpinnerItems = new String[mCameraPanes.size()];
258        for (int i = 0; i < cameraSpinnerItems.length; i++) {
259            cameraSpinnerItems[i] = mCameraPanes.get(i).getPaneName();
260            if (cameraSpinnerItems[i].equals(currentSelection)) {
261                newSelectionIndex = i;
262            }
263        }
264        mCameraSpinner.setAdapter(new ArrayAdapter<String>(getContext(), R.layout.spinner_item,
265                cameraSpinnerItems));
266        mCameraSpinner.setSelection(newSelectionIndex);
267    }
268
269    private void updateSubPaneCamera() {
270        if (mCameraPanes.size() > 0 && mCurrentOutput != null) {
271            mCurrentOutput.setTargetCameraPane(mCameraPanes.get(mCameraSpinner
272                    .getSelectedItemPosition()));
273        }
274    }
275
276    private TargetSubPane createOutputView(OutputViewType type) {
277        TargetSubPane newPane = null;
278        switch (type) {
279            case IMAGE_READER:
280                newPane = new ImageReaderSubPane(getContext(), null);
281                break;
282            case MEDIA_CODEC:
283            case MEDIA_RECORDER:
284            case RENDERSCRIPT:
285                TLog.e("No implementation yet for view type %s", type);
286                break;
287            case SURFACE_VIEW:
288                newPane = new SurfaceViewSubPane(getContext(), null);
289                break;
290            case TEXTURE_VIEW:
291                newPane = new TextureViewSubPane(getContext(), null);
292                break;
293        }
294        return newPane;
295    }
296}
297