1 files changed, 355 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/deprecated/voice/RecognitionView.java b/java/src/com/android/inputmethod/deprecated/voice/RecognitionView.java
new file mode 100644
index 000000000..52c73ce90
--- /dev/null
+++ b/java/src/com/android/inputmethod/deprecated/voice/RecognitionView.java
@@ -0,0 +1,355 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.android.inputmethod.deprecated.voice;
+
+import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.SubtypeSwitcher;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.CornerPathEffect;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.PathEffect;
+import android.graphics.drawable.Drawable;
+import android.os.Handler;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import java.io.ByteArrayOutputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.ShortBuffer;
+import java.util.Locale;
+
+/**
+ * The user interface for the "Speak now" and "working" states.
+ * Displays a recognition dialog (with waveform, voice meter, etc.),
+ * plays beeps, shows errors, etc.
+ */
+public class RecognitionView {
+    @SuppressWarnings("unused")
+    private static final String TAG = "RecognitionView";
+
+    private Handler mUiHandler;  // Reference to UI thread
+    private View mView;
+    private Context mContext;
+
+    private TextView mText;
+    private ImageView mImage;
+    private View mProgress;
+    private SoundIndicator mSoundIndicator;
+    private TextView mLanguage;
+    private Button mButton;
+
+    private Drawable mInitializing;
+    private Drawable mError;
+
+    private static final int INIT = 0;
+    private static final int LISTENING = 1;
+    private static final int WORKING = 2;
+    private static final int READY = 3;
+    
+    private int mState = INIT;
+
+    private final View mPopupLayout;
+
+    private final Drawable mListeningBorder;
+    private final Drawable mWorkingBorder;
+    private final Drawable mErrorBorder;
+
+    public RecognitionView(Context context, OnClickListener clickListener) {
+        mUiHandler = new Handler();
+
+        LayoutInflater inflater = (LayoutInflater) context.getSystemService(
+                Context.LAYOUT_INFLATER_SERVICE);
+
+        mView = inflater.inflate(R.layout.recognition_status, null);
+
+        mPopupLayout= mView.findViewById(R.id.popup_layout);
+
+        // Pre-load volume level images
+        Resources r = context.getResources();
+
+        mListeningBorder = r.getDrawable(R.drawable.vs_dialog_red);
+        mWorkingBorder = r.getDrawable(R.drawable.vs_dialog_blue);
+        mErrorBorder = r.getDrawable(R.drawable.vs_dialog_yellow);
+
+        mInitializing = r.getDrawable(R.drawable.mic_slash);
+        mError = r.getDrawable(R.drawable.caution);
+
+        mImage = (ImageView) mView.findViewById(R.id.image);
+        mProgress = mView.findViewById(R.id.progress);
+        mSoundIndicator = (SoundIndicator) mView.findViewById(R.id.sound_indicator);
+
+        mButton = (Button) mView.findViewById(R.id.button);
+        mButton.setOnClickListener(clickListener);
+        mText = (TextView) mView.findViewById(R.id.text);
+        mLanguage = (TextView) mView.findViewById(R.id.language);
+
+        mContext = context;
+    }
+
+    public View getView() {
+        return mView;
+    }
+
+    public void restoreState() {
+        mUiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                // Restart the spinner
+                if (mState == WORKING) {
+                    ((ProgressBar) mProgress).setIndeterminate(false);
+                    ((ProgressBar) mProgress).setIndeterminate(true);
+                }
+            }
+        });
+    }
+
+    public void showInitializing() {
+        mUiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                mState = INIT;
+                prepareDialog(mContext.getText(R.string.voice_initializing), mInitializing,
+                        mContext.getText(R.string.cancel));
+            }
+          });
+    }
+
+    public void showListening() {
+        Log.d(TAG, "#showListening");
+        mUiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                mState = LISTENING;
+                prepareDialog(mContext.getText(R.string.voice_listening), null,
+                        mContext.getText(R.string.cancel));
+            }
+          });
+    }
+
+    public void updateVoiceMeter(float rmsdB) {
+        mSoundIndicator.setRmsdB(rmsdB);
+    }
+
+    public void showError(final String message) {
+        mUiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                mState = READY;
+                prepareDialog(message, mError, mContext.getText(R.string.ok));
+            }
+        });
+    }
+
+    public void showWorking(
+        final ByteArrayOutputStream waveBuffer,
+        final int speechStartPosition,
+        final int speechEndPosition) {
+        mUiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                mState = WORKING;
+                prepareDialog(mContext.getText(R.string.voice_working), null, mContext
+                        .getText(R.string.cancel));
+                final ShortBuffer buf = ByteBuffer.wrap(waveBuffer.toByteArray()).order(
+                        ByteOrder.nativeOrder()).asShortBuffer();
+                buf.position(0);
+                waveBuffer.reset();
+                showWave(buf, speechStartPosition / 2, speechEndPosition / 2);
+            }
+        });
+    }
+    
+    private void prepareDialog(CharSequence text, Drawable image,
+            CharSequence btnTxt) {
+
+        /*
+         * The mic of INIT and of LISTENING has to be displayed in the same position. To accomplish
+         * that, some text visibility are not set as GONE but as INVISIBLE.
+         */
+        switch (mState) {
+            case INIT:
+                mText.setVisibility(View.INVISIBLE);
+
+                mProgress.setVisibility(View.GONE);
+
+                mImage.setVisibility(View.VISIBLE);
+                mImage.setImageResource(R.drawable.mic_slash);
+
+                mSoundIndicator.setVisibility(View.GONE);
+                mSoundIndicator.stop();
+
+                mLanguage.setVisibility(View.INVISIBLE);
+
+                mPopupLayout.setBackgroundDrawable(mListeningBorder);
+                break;
+            case LISTENING:
+                mText.setVisibility(View.VISIBLE);
+                mText.setText(text);
+
+                mProgress.setVisibility(View.GONE);
+
+                mImage.setVisibility(View.GONE);
+
+                mSoundIndicator.setVisibility(View.VISIBLE);
+                mSoundIndicator.start();
+
+                Locale locale = SubtypeSwitcher.getInstance().getInputLocale();
+
+                mLanguage.setVisibility(View.VISIBLE);
+                mLanguage.setText(SubtypeSwitcher.getFullDisplayName(locale, true));
+
+                mPopupLayout.setBackgroundDrawable(mListeningBorder);
+                break;
+            case WORKING:
+
+                mText.setVisibility(View.VISIBLE);
+                mText.setText(text);
+
+                mProgress.setVisibility(View.VISIBLE);
+
+                mImage.setVisibility(View.VISIBLE);
+
+                mSoundIndicator.setVisibility(View.GONE);
+                mSoundIndicator.stop();
+
+                mLanguage.setVisibility(View.GONE);
+
+                mPopupLayout.setBackgroundDrawable(mWorkingBorder);
+                break;
+            case READY:
+                mText.setVisibility(View.VISIBLE);
+                mText.setText(text);
+
+                mProgress.setVisibility(View.GONE);
+
+                mImage.setVisibility(View.VISIBLE);
+                mImage.setImageResource(R.drawable.caution);
+
+                mSoundIndicator.setVisibility(View.GONE);
+                mSoundIndicator.stop();
+
+                mLanguage.setVisibility(View.GONE);
+
+                mPopupLayout.setBackgroundDrawable(mErrorBorder);
+                break;
+             default:
+                 Log.w(TAG, "Unknown state " + mState);
+        }
+        mPopupLayout.requestLayout();
+        mButton.setText(btnTxt);
+    }
+
+    /**
+     * @return an average abs of the specified buffer.
+     */
+    private static int getAverageAbs(ShortBuffer buffer, int start, int i, int npw) {
+        int from = start + i * npw;
+        int end = from + npw;
+        int total = 0;
+        for (int x = from; x < end; x++) {
+            total += Math.abs(buffer.get(x));
+        }
+        return total / npw;
+    }
+
+
+    /**
+     * Shows waveform of input audio.
+     *
+     * Copied from version in VoiceSearch's RecognitionActivity.
+     *
+     * TODO: adjust stroke width based on the size of data.
+     * TODO: use dip rather than pixels.
+     */
+    private void showWave(ShortBuffer waveBuffer, int startPosition, int endPosition) {
+        final int w = ((View) mImage.getParent()).getWidth();
+        final int h = ((View) mImage.getParent()).getHeight();
+        if (w <= 0 || h <= 0) {
+            // view is not visible this time. Skip drawing.
+            return;
+        }
+        final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
+        final Canvas c = new Canvas(b);
+        final Paint paint = new Paint();
+        paint.setColor(0xFFFFFFFF); // 0xAARRGGBB
+        paint.setAntiAlias(true);
+        paint.setStyle(Paint.Style.STROKE);
+        paint.setAlpha(80);
+
+        final PathEffect effect = new CornerPathEffect(3);
+        paint.setPathEffect(effect);
+
+        final int numSamples = waveBuffer.remaining();
+        int endIndex;
+        if (endPosition == 0) {
+            endIndex = numSamples;
+        } else {
+            endIndex = Math.min(endPosition, numSamples);
+        }
+
+        int startIndex = startPosition - 2000; // include 250ms before speech
+        if (startIndex < 0) {
+            startIndex = 0;
+        }
+        final int numSamplePerWave = 200;  // 8KHz 25ms = 200 samples
+        final float scale = 10.0f / 65536.0f;
+
+        final int count = (endIndex - startIndex) / numSamplePerWave;
+        final float deltaX = 1.0f * w / count;
+        int yMax = h / 2;
+        Path path = new Path();
+        c.translate(0, yMax);
+        float x = 0;
+        path.moveTo(x, 0);
+        for (int i = 0; i < count; i++) {
+            final int avabs = getAverageAbs(waveBuffer, startIndex, i , numSamplePerWave);
+            int sign = ( (i & 01) == 0) ? -1 : 1;
+            final float y = Math.min(yMax, avabs * h * scale) * sign;
+            path.lineTo(x, y);
+            x += deltaX;
+            path.lineTo(x, y);
+        }
+        if (deltaX > 4) {
+            paint.setStrokeWidth(2);
+        } else {
+            paint.setStrokeWidth(Math.max(0, (int) (deltaX -.05)));
+        }
+        c.drawPath(path, paint);
+        mImage.setImageBitmap(b);
+    }
+
+    public void finish() {
+        mUiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                mSoundIndicator.stop();
+            }
+        });
+    }
+}