Move VideoCapture* files from media/base/android/... to media/capture/video/android/java/...

media/base/android/java/src/org/chromium/media/VideoCaptureCamera.java

-// 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.
-
-package org.chromium.media;
-
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.graphics.SurfaceTexture;
-import android.opengl.GLES20;
-import android.os.Build;
-
-import org.chromium.base.Log;
-import org.chromium.base.annotations.JNINamespace;
-
-import java.io.IOException;
-import java.util.List;
-import java.util.concurrent.locks.ReentrantLock;
-
-/**
- * Video Capture Device extension of VideoCapture to provide common functionality
- * for capture using android.hardware.Camera API (deprecated in API 21). Normal
- * Android and Tango devices are extensions of this class.
- **/
-@JNINamespace("media")
-@SuppressWarnings("deprecation")
-//TODO: is this class only used on ICS MR1 (or some later version) and above?
-@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1)
-public abstract class VideoCaptureCamera extends VideoCapture
-        implements android.hardware.Camera.PreviewCallback {
-
-    protected android.hardware.Camera mCamera;
-    // Lock to mutually exclude execution of OnPreviewFrame() and {start/stop}Capture().
-    protected ReentrantLock mPreviewBufferLock = new ReentrantLock();
-    // True when native code has started capture.
-    protected boolean mIsRunning = false;
-
-    protected int[] mGlTextures = null;
-    protected SurfaceTexture mSurfaceTexture = null;
-    protected static final int GL_TEXTURE_EXTERNAL_OES = 0x8D65;
-
-    private static final String TAG = "cr.media";
-
-    protected static android.hardware.Camera.CameraInfo getCameraInfo(int id) {
-        android.hardware.Camera.CameraInfo cameraInfo =
-                new android.hardware.Camera.CameraInfo();
-        try {
-            android.hardware.Camera.getCameraInfo(id, cameraInfo);
-        } catch (RuntimeException ex) {
-            Log.e(TAG, "getCameraInfo: Camera.getCameraInfo: " + ex);
-            return null;
-        }
-        return cameraInfo;
-    }
-
-    protected static android.hardware.Camera.Parameters getCameraParameters(
-            android.hardware.Camera camera) {
-        android.hardware.Camera.Parameters parameters;
-        try {
-            parameters = camera.getParameters();
-        } catch (RuntimeException ex) {
-            Log.e(TAG, "getCameraParameters: android.hardware.Camera.getParameters: " + ex);
-            if (camera != null) camera.release();
-            return null;
-        }
-        return parameters;
-    }
-
-    VideoCaptureCamera(Context context,
-                       int id,
-                       long nativeVideoCaptureDeviceAndroid) {
-        super(context, id, nativeVideoCaptureDeviceAndroid);
-    }
-
-    @Override
-    public boolean allocate(int width, int height, int frameRate) {
-        Log.d(TAG, "allocate: requested (%d x %d) @%dfps", width, height, frameRate);
-        try {
-            mCamera = android.hardware.Camera.open(mId);
-        } catch (RuntimeException ex) {
-            Log.e(TAG, "allocate: Camera.open: " + ex);
-            return false;
-        }
-
-        android.hardware.Camera.CameraInfo cameraInfo = VideoCaptureCamera.getCameraInfo(mId);
-        if (cameraInfo == null) {
-            mCamera.release();
-            mCamera = null;
-            return false;
-        }
-        mCameraNativeOrientation = cameraInfo.orientation;
-        // For Camera API, the readings of back-facing camera need to be inverted.
-        mInvertDeviceOrientationReadings =
-                (cameraInfo.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK);
-        Log.d(TAG, "allocate: Rotation dev=%d, cam=%d, facing back? %s", getDeviceRotation(),
-                mCameraNativeOrientation, mInvertDeviceOrientationReadings);
-
-        android.hardware.Camera.Parameters parameters = getCameraParameters(mCamera);
-        if (parameters == null) {
-            mCamera = null;
-            return false;
-        }
-
-        // getSupportedPreviewFpsRange() returns a List with at least one
-        // element, but when camera is in bad state, it can return null pointer.
-        List<int[]> listFpsRange = parameters.getSupportedPreviewFpsRange();
-        if (listFpsRange == null || listFpsRange.size() == 0) {
-            Log.e(TAG, "allocate: no fps range found");
-            return false;
-        }
-        // API fps ranges are scaled up x1000 to avoid floating point.
-        int frameRateScaled = frameRate * 1000;
-        // Use the first range as the default chosen range.
-        int[] chosenFpsRange = listFpsRange.get(0);
-        int frameRateNearest = Math.abs(frameRateScaled - chosenFpsRange[0])
-                               < Math.abs(frameRateScaled - chosenFpsRange[1])
-                               ? chosenFpsRange[0] : chosenFpsRange[1];
-        int chosenFrameRate = (frameRateNearest + 999) / 1000;
-        int fpsRangeSize = Integer.MAX_VALUE;
-        for (int[] fpsRange : listFpsRange) {
-            if (fpsRange[0] <= frameRateScaled && frameRateScaled <= fpsRange[1]
-                    && (fpsRange[1] - fpsRange[0]) <= fpsRangeSize) {
-                chosenFpsRange = fpsRange;
-                chosenFrameRate = frameRate;
-                fpsRangeSize = fpsRange[1] - fpsRange[0];
-            }
-        }
-        Log.d(TAG, "allocate: fps set to %d, [%d-%d]", chosenFrameRate,
-                chosenFpsRange[0], chosenFpsRange[1]);
-
-        // Calculate size.
-        List<android.hardware.Camera.Size> listCameraSize =
-                parameters.getSupportedPreviewSizes();
-        int minDiff = Integer.MAX_VALUE;
-        int matchedWidth = width;
-        int matchedHeight = height;
-        for (android.hardware.Camera.Size size : listCameraSize) {
-            int diff = Math.abs(size.width - width)
-                       + Math.abs(size.height - height);
-            Log.d(TAG, "allocate: supported (%d, %d), diff=%d", size.width, size.height, diff);
-            // TODO(wjia): Remove this hack (forcing width to be multiple
-            // of 32) by supporting stride in video frame buffer.
-            // Right now, VideoCaptureController requires compact YV12
-            // (i.e., with no padding).
-            if (diff < minDiff && (size.width % 32 == 0)) {
-                minDiff = diff;
-                matchedWidth = size.width;
-                matchedHeight = size.height;
-            }
-        }
-        if (minDiff == Integer.MAX_VALUE) {
-            Log.e(TAG, "allocate: can not find a multiple-of-32 resolution");
-            return false;
-        }
-        Log.d(TAG, "allocate: matched (%d x %d)", matchedWidth, matchedHeight);
-
-        if (parameters.isVideoStabilizationSupported()) {
-            Log.d(TAG, "Image stabilization supported, currently: "
-                    + parameters.getVideoStabilization() + ", setting it.");
-            parameters.setVideoStabilization(true);
-        } else {
-            Log.d(TAG, "Image stabilization not supported.");
-        }
-
-        if (parameters.getSupportedFocusModes().contains(
-                android.hardware.Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
-            parameters.setFocusMode(android.hardware.Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
-        } else {
-            Log.d(TAG, "Continuous focus mode not supported.");
-        }
-
-        setCaptureParameters(matchedWidth, matchedHeight, chosenFrameRate, parameters);
-        parameters.setPictureSize(matchedWidth, matchedHeight);
-        parameters.setPreviewSize(matchedWidth, matchedHeight);
-        parameters.setPreviewFpsRange(chosenFpsRange[0], chosenFpsRange[1]);
-        parameters.setPreviewFormat(mCaptureFormat.mPixelFormat);
-        try {
-            mCamera.setParameters(parameters);
-        } catch (RuntimeException ex) {
-            Log.e(TAG, "setParameters: " + ex);
-            return false;
-        }
-
-        // Set SurfaceTexture. Android Capture needs a SurfaceTexture even if
-        // it is not going to be used.
-        mGlTextures = new int[1];
-        // Generate one texture pointer and bind it as an external texture.
-        GLES20.glGenTextures(1, mGlTextures, 0);
-        GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, mGlTextures[0]);
-        // No mip-mapping with camera source.
-        GLES20.glTexParameterf(GL_TEXTURE_EXTERNAL_OES,
-                GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
-        GLES20.glTexParameterf(GL_TEXTURE_EXTERNAL_OES,
-                GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
-        // Clamp to edge is only option.
-        GLES20.glTexParameteri(GL_TEXTURE_EXTERNAL_OES,
-                GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
-        GLES20.glTexParameteri(GL_TEXTURE_EXTERNAL_OES,
-                GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
-
-        mSurfaceTexture = new SurfaceTexture(mGlTextures[0]);
-        mSurfaceTexture.setOnFrameAvailableListener(null);
-        try {
-            mCamera.setPreviewTexture(mSurfaceTexture);
-        } catch (IOException ex) {
-            Log.e(TAG, "allocate: " + ex);
-            return false;
-        }
-
-        allocateBuffers();
-        return true;
-    }
-
-    @Override
-    public boolean startCapture() {
-        if (mCamera == null) {
-            Log.e(TAG, "startCapture: camera is null");
-            return false;
-        }
-
-        mPreviewBufferLock.lock();
-        try {
-            if (mIsRunning) {
-                return true;
-            }
-            mIsRunning = true;
-        } finally {
-            mPreviewBufferLock.unlock();
-        }
-        setPreviewCallback(this);
-        try {
-            mCamera.startPreview();
-        } catch (RuntimeException ex) {
-            Log.e(TAG, "startCapture: Camera.startPreview: " + ex);
-            return false;
-        }
-        return true;
-    }
-
-    @Override
-    public boolean stopCapture() {
-        if (mCamera == null) {
-            Log.e(TAG, "stopCapture: camera is null");
-            return true;
-        }
-
-        mPreviewBufferLock.lock();
-        try {
-            if (!mIsRunning) {
-                return true;
-            }
-            mIsRunning = false;
-        } finally {
-            mPreviewBufferLock.unlock();
-        }
-
-        mCamera.stopPreview();
-        setPreviewCallback(null);
-        return true;
-    }
-
-    @Override
-    public void deallocate() {
-        if (mCamera == null) return;
-
-        stopCapture();
-        try {
-            mCamera.setPreviewTexture(null);
-            if (mGlTextures != null) GLES20.glDeleteTextures(1, mGlTextures, 0);
-            mCaptureFormat = null;
-            mCamera.release();
-            mCamera = null;
-        } catch (IOException ex) {
-            Log.e(TAG, "deallocate: failed to deallocate camera, " + ex);
-            return;
-        }
-    }
-
-    // Local hook to allow derived classes to configure and plug capture
-    // buffers if needed.
-    abstract void allocateBuffers();
-
-    // Local hook to allow derived classes to fill capture format and modify
-    // camera parameters as they see fit.
-    abstract void setCaptureParameters(
-            int width,
-            int height,
-            int frameRate,
-            android.hardware.Camera.Parameters cameraParameters);
-
-    // Local method to be overriden with the particular setPreviewCallback to be
-    // used in the implementations.
-    abstract void setPreviewCallback(android.hardware.Camera.PreviewCallback cb);
-}