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Fix a random crash because of NULL point

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Description:
This cl fixes NULL point crash problem which was not detected runtime.
Also, small reformats are added too.

BUG=
TEST=
Review URL: https://webrtc-codereview.appspot.com/579009

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2254 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
leozwang@webrtc.org 2012-05-16 16:57:28 +00:00
parent 4d7d23cde4
commit 00c07e66a7
1 changed files with 68 additions and 101 deletions
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169
src/modules/video_capture/main/source/android/java/org/webrtc/videoengine/VideoCaptureAndroid.java
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@ -29,9 +29,13 @@ import android.view.SurfaceHolder.Callback;
public class VideoCaptureAndroid implements PreviewCallback, Callback {
private final static String TAG = "WEBRTC-JC";
private Camera camera;
private AndroidVideoCaptureDevice currentDevice = null;
public ReentrantLock previewBufferLock = new ReentrantLock();
// This lock takes sync with StartCapture and SurfaceChanged
private ReentrantLock captureLock = new ReentrantLock();
private int PIXEL_FORMAT = ImageFormat.NV21;
PixelFormat pixelFormat = new PixelFormat();
// True when the C++ layer has ordered the camera to be started.
@ -50,29 +54,21 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
// True if this class owns the preview video buffers.
private boolean ownsBuffers = false;
// Set this to 4 for DEBUG logging. 2 for DEBUG
private final static String TAG = "WEBRTC";
private static int LOGLEVEL = 2;
private static boolean VERBOSE = LOGLEVEL > 2;
private static boolean DEBUG = LOGLEVEL > 1;
CaptureCapabilityAndroid currentCapability = null;
private int mCaptureWidth = -1;
private int mCaptureHeight = -1;
private int mCaptureFPS = -1;
public static
void DeleteVideoCaptureAndroid(VideoCaptureAndroid captureAndroid) {
if(DEBUG) Log.d(TAG, "DeleteVideoCaptureAndroid");
Log.d(TAG, "DeleteVideoCaptureAndroid");
captureAndroid.StopCapture();
captureAndroid.camera.release();
captureAndroid.camera = null;
captureAndroid.context = 0;
if(DEBUG) Log.v(TAG, "DeleteVideoCaptureAndroid ended");
}
public VideoCaptureAndroid(int in_id,
long in_context,
Camera in_camera,
public VideoCaptureAndroid(int in_id, long in_context, Camera in_camera,
AndroidVideoCaptureDevice in_device) {
id = in_id;
context = in_context;
@ -80,16 +76,27 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
currentDevice = in_device;
}
private int doStartCapture(int width, int height, int frameRate) {
if(DEBUG) Log.d(TAG, "doStartCapture " + width +
" height " + height +" frame rate " + frameRate);
private int tryStartCapture(int width, int height, int frameRate) {
if (camera == null) {
Log.e(TAG, "Camera not initialized %d" + id);
return -1;
}
Log.d(TAG, "tryStartCapture " + width +
" height " + height +" frame rate " + frameRate +
"isCaptureRunning " + isCaptureRunning +
"isSurfaceReady " + isSurfaceReady +
"isCaptureStarted " + isCaptureStarted);
if (isCaptureRunning || !isSurfaceReady || !isCaptureStarted) {
return 0;
}
try {
if (camera == null) {
Log.e(TAG, "Camera not initialized %d" + id);
return -1;
}
currentCapability = new CaptureCapabilityAndroid();
camera.setPreviewDisplay(surfaceHolder);
CaptureCapabilityAndroid currentCapability =
new CaptureCapabilityAndroid();
currentCapability.width = width;
currentCapability.height = height;
currentCapability.maxFPS = frameRate;
@ -103,22 +110,13 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
camera.setParameters(parameters);
int bufSize = width * height * pixelFormat.bitsPerPixel / 8;
if(android.os.Build.VERSION.SDK_INT >= 7) {
// According to Doc addCallbackBuffer belongs to API level 8.
// But it seems like it works on Android 2.1 as well.
// At least SE X10 and Milestone
byte[] buffer = null;
for (int i = 0; i < numCaptureBuffers; i++) {
buffer = new byte[bufSize];
camera.addCallbackBuffer(buffer);
}
camera.setPreviewCallbackWithBuffer(this);
ownsBuffers = true;
}
else {
camera.setPreviewCallback(this);
byte[] buffer = null;
for (int i = 0; i < numCaptureBuffers; i++) {
buffer = new byte[bufSize];
camera.addCallbackBuffer(buffer);
}
camera.setPreviewCallbackWithBuffer(this);
ownsBuffers = true;
camera.startPreview();
previewBufferLock.lock();
@ -131,46 +129,40 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
Log.e(TAG, "Failed to start camera");
return -1;
}
isCaptureRunning = true;
return 0;
}
public int StartCapture(int width, int height, int frameRate) {
if(DEBUG) Log.d(TAG, "StartCapture width " + width +
Log.d(TAG, "StartCapture width " + width +
" height " + height +" frame rate " + frameRate);
isCaptureStarted = true;
// Get the local preview SurfaceHolder from the static render class
localPreview = ViERenderer.GetLocalRenderer();
if(localPreview != null) {
if (localPreview != null) {
localPreview.addCallback(this);
}
if (camera == null) {
Log.e(TAG, "Camera not initialized %d" + id);
return -1;
}
captureLock.lock();
isCaptureStarted = true;
mCaptureWidth = width;
mCaptureHeight = height;
mCaptureFPS = frameRate;
if (!isSurfaceReady) return 0;
int res = tryStartCapture(mCaptureWidth, mCaptureHeight, mCaptureFPS);
return doStartCapture(width, height, frameRate);
captureLock.unlock();
return res;
}
public int StopCapture() {
if(DEBUG) Log.d(TAG, "StopCapture");
Log.d(TAG, "StopCapture");
try {
previewBufferLock.lock();
isCaptureRunning = false;
previewBufferLock.unlock();
camera.stopPreview();
if(android.os.Build.VERSION.SDK_INT > 7) {
camera.setPreviewCallbackWithBuffer(null);
}
else {
camera.setPreviewCallback(null);
}
camera.setPreviewCallbackWithBuffer(null);
}
catch (Exception ex) {
Log.e(TAG, "Failed to stop camera");
@ -186,16 +178,15 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
public void onPreviewFrame(byte[] data, Camera camera) {
previewBufferLock.lock();
if(VERBOSE) {
Log.v(TAG, "preview frame length " + data.length +
" context" + context);
}
if(isCaptureRunning) {
// The following line is for debug only
// Log.v(TAG, "preview frame length " + data.length +
// " context" + context);
if (isCaptureRunning) {
// If StartCapture has been called but not StopCapture
// Call the C++ layer with the captured frame
if (data.length == expectedFrameSize) {
ProvideCameraFrame(data, expectedFrameSize, context);
if(ownsBuffers) {
if (ownsBuffers) {
// Give the video buffer to the camera service again.
camera.addCallbackBuffer(data);
}
@ -209,21 +200,21 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
public void SetPreviewRotation(int rotation) {
Log.v(TAG, "SetPreviewRotation:" + rotation);
if(camera != null) {
if (camera != null) {
previewBufferLock.lock();
int width = 0;
int height = 0;
int framerate = 0;
if(isCaptureRunning) {
width = currentCapability.width;
height = currentCapability.height;
framerate = currentCapability.maxFPS;
if (isCaptureRunning) {
width = mCaptureWidth;
height = mCaptureHeight;
framerate = mCaptureFPS;
StopCapture();
}
int resultRotation = 0;
if(currentDevice.frontCameraType ==
if (currentDevice.frontCameraType ==
VideoCaptureDeviceInfoAndroid.FrontFacingCameraType.Android23) {
// this is a 2.3 or later front facing camera.
// SetDisplayOrientation will flip the image horizontally
@ -234,19 +225,9 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
// Back facing or 2.2 or previous front camera
resultRotation=rotation;
}
if(android.os.Build.VERSION.SDK_INT>7) {
camera.setDisplayOrientation(resultRotation);
}
else {
// Android 2.1 and previous
// This rotation unfortunately does not seems to work.
// http://code.google.com/p/android/issues/detail?id=1193
Camera.Parameters parameters = camera.getParameters();
parameters.setRotation(resultRotation);
camera.setParameters(parameters);
}
camera.setDisplayOrientation(resultRotation);
if(isCaptureRunning) {
if (isCaptureRunning) {
StartCapture(width, height, framerate);
}
previewBufferLock.unlock();
@ -255,37 +236,23 @@ public class VideoCaptureAndroid implements PreviewCallback, Callback {
public void surfaceChanged(SurfaceHolder holder,
int format, int width, int height) {
if (DEBUG) Log.d(TAG, "VideoCaptureAndroid::surfaceChanged");
Log.d(TAG, "VideoCaptureAndroid::surfaceChanged");
captureLock.lock();
isSurfaceReady = true;
surfaceHolder = holder;
if (!isCaptureStarted || isCaptureRunning)
return;
if (DEBUG) {
Log.d(TAG, "VideoCaptureAndroid::surfaceChanged StartCapture");
}
if(camera != null) {
try {
camera.setPreviewDisplay(surfaceHolder);
}
catch (IOException e) {
Log.e(TAG, "Failed to set Local preview. " + e.getMessage());
}
}
doStartCapture(currentCapability.width,
currentCapability.height,
currentCapability.maxFPS);
tryStartCapture(mCaptureWidth, mCaptureHeight, mCaptureFPS);
captureLock.unlock();
return;
}
public void surfaceCreated(SurfaceHolder holder) {
if(DEBUG) Log.d(TAG, "VideoCaptureAndroid::surfaceCreated");
Log.d(TAG, "VideoCaptureAndroid::surfaceCreated");
}
public void surfaceDestroyed(SurfaceHolder holder) {
if(DEBUG) Log.d(TAG, "VideoCaptureAndroid::surfaceDestroyed");
Log.d(TAG, "VideoCaptureAndroid::surfaceDestroyed");
isSurfaceReady = false;
}
}