import android.content.Context;
import android.graphics.ImageFormat;
-import android.graphics.SurfaceTexture;
-import android.opengl.GLES20;
-import android.util.Log;
-import android.view.Surface;
-import android.view.WindowManager;
import org.chromium.base.CalledByNative;
import org.chromium.base.JNINamespace;
-import java.io.IOException;
-import java.util.List;
-import java.util.concurrent.locks.ReentrantLock;
-
/**
- * Video Capture Device base class to interface to native Chromium.
+ * Video Capture Device base class, defines a set of methods that native code
+ * needs to use to configure, start capture, and to be reached by callbacks and
+ * provides some neccesary data type(s) with accessors.
**/
@JNINamespace("media")
-@SuppressWarnings("deprecation")
-public abstract class VideoCapture implements android.hardware.Camera.PreviewCallback {
+public abstract class VideoCapture {
protected static class CaptureFormat {
int mWidth;
}
}
- protected android.hardware.Camera mCamera;
protected CaptureFormat mCaptureFormat = null;
- // Lock to mutually exclude execution of OnPreviewFrame {start/stop}Capture.
- protected ReentrantLock mPreviewBufferLock = new ReentrantLock();
- protected Context mContext = null;
- // True when native code has started capture.
- protected boolean mIsRunning = false;
-
- protected int mId;
+ protected final Context mContext;
+ protected final int mId;
// Native callback context variable.
- protected long mNativeVideoCaptureDeviceAndroid;
- protected int[] mGlTextures = null;
- protected SurfaceTexture mSurfaceTexture = null;
- protected static final int GL_TEXTURE_EXTERNAL_OES = 0x8D65;
-
- protected int mCameraOrientation;
- protected int mCameraFacing;
- protected int mDeviceOrientation;
- private static final String TAG = "VideoCapture";
+ protected final long mNativeVideoCaptureDeviceAndroid;
VideoCapture(Context context,
int id,
}
@CalledByNative
- boolean allocate(int width, int height, int frameRate) {
- Log.d(TAG, "allocate: requested (" + width + "x" + height + ")@" +
- frameRate + "fps");
- try {
- mCamera = android.hardware.Camera.open(mId);
- } catch (RuntimeException ex) {
- Log.e(TAG, "allocate: Camera.open: " + ex);
- return false;
- }
-
- android.hardware.Camera.CameraInfo cameraInfo = getCameraInfo(mId);
- if (cameraInfo == null) {
- mCamera.release();
- mCamera = null;
- return false;
- }
-
- mCameraOrientation = cameraInfo.orientation;
- mCameraFacing = cameraInfo.facing;
- mDeviceOrientation = getDeviceOrientation();
- Log.d(TAG, "allocate: orientation dev=" + mDeviceOrientation +
- ", cam=" + mCameraOrientation + ", facing=" + mCameraFacing);
-
- 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;
- }
- int frameRateInMs = frameRate * 1000;
- // Use the first range as default.
- int[] fpsMinMax = listFpsRange.get(0);
- int newFrameRate = (fpsMinMax[0] + 999) / 1000;
- for (int[] fpsRange : listFpsRange) {
- if (fpsRange[0] <= frameRateInMs && frameRateInMs <= fpsRange[1]) {
- fpsMinMax = fpsRange;
- newFrameRate = frameRate;
- break;
- }
- }
- frameRate = newFrameRate;
- Log.d(TAG, "allocate: fps set to " + frameRate);
-
- // 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 (" +
- size.width + ", " + size.height + "), diff=" + 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 (" + matchedWidth + "x" + 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.");
- }
-
- setCaptureParameters(matchedWidth, matchedHeight, frameRate, parameters);
- parameters.setPreviewSize(mCaptureFormat.mWidth,
- mCaptureFormat.mHeight);
- parameters.setPreviewFpsRange(fpsMinMax[0], fpsMinMax[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;
- }
+ abstract boolean allocate(int width, int height, int frameRate);
@CalledByNative
- public int startCapture() {
- if (mCamera == null) {
- Log.e(TAG, "startCapture: camera is null");
- return -1;
- }
-
- mPreviewBufferLock.lock();
- try {
- if (mIsRunning) {
- return 0;
- }
- mIsRunning = true;
- } finally {
- mPreviewBufferLock.unlock();
- }
- setPreviewCallback(this);
- try {
- mCamera.startPreview();
- } catch (RuntimeException ex) {
- Log.e(TAG, "startCapture: Camera.startPreview: " + ex);
- return -1;
- }
- return 0;
- }
+ abstract int startCapture();
@CalledByNative
- public int stopCapture() {
- if (mCamera == null) {
- Log.e(TAG, "stopCapture: camera is null");
- return 0;
- }
-
- mPreviewBufferLock.lock();
- try {
- if (!mIsRunning) {
- return 0;
- }
- mIsRunning = false;
- } finally {
- mPreviewBufferLock.unlock();
- }
-
- mCamera.stopPreview();
- setPreviewCallback(null);
- return 0;
- }
+ abstract int stopCapture();
@CalledByNative
- 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 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);
+ abstract void deallocate();
// Local hook to allow derived classes to configure and plug capture
// buffers if needed.
abstract void allocateBuffers();
- // Local method to be overriden with the particular setPreviewCallback to be
- // used in the implementations.
- abstract void setPreviewCallback(android.hardware.Camera.PreviewCallback cb);
-
@CalledByNative
- public int queryWidth() {
+ public final int queryWidth() {
return mCaptureFormat.mWidth;
}
@CalledByNative
- public int queryHeight() {
+ public final int queryHeight() {
return mCaptureFormat.mHeight;
}
@CalledByNative
- public int queryFrameRate() {
+ public final int queryFrameRate() {
return mCaptureFormat.mFramerate;
}
@CalledByNative
- public int getColorspace() {
+ public final int getColorspace() {
switch (mCaptureFormat.mPixelFormat) {
case ImageFormat.YV12:
- return AndroidImageFormatList.ANDROID_IMAGEFORMAT_YV12;
+ return AndroidImageFormat.YV12;
case ImageFormat.NV21:
- return AndroidImageFormatList.ANDROID_IMAGEFORMAT_NV21;
+ return AndroidImageFormat.NV21;
case ImageFormat.UNKNOWN:
default:
- return AndroidImageFormatList.ANDROID_IMAGEFORMAT_UNKNOWN;
- }
- }
-
- protected int getDeviceOrientation() {
- int orientation = 0;
- if (mContext != null) {
- WindowManager wm = (WindowManager) mContext.getSystemService(
- Context.WINDOW_SERVICE);
- switch(wm.getDefaultDisplay().getRotation()) {
- case Surface.ROTATION_90:
- orientation = 90;
- break;
- case Surface.ROTATION_180:
- orientation = 180;
- break;
- case Surface.ROTATION_270:
- orientation = 270;
- break;
- case Surface.ROTATION_0:
- default:
- orientation = 0;
- break;
- }
+ return AndroidImageFormat.UNKNOWN;
}
- return orientation;
}
// Method for VideoCapture implementations to call back native code.
byte[] data,
int length,
int rotation);
-
- 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);
- camera.release();
- return null;
- }
- return parameters;
- }
-
- private 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: android.hardware.Camera.getCameraInfo: " + ex);
- return null;
- }
- return cameraInfo;
- }
}
projects / platform / framework / web / crosswalk.git / blobdiff