我目前有一个应用程序,我正在尝试录制视频,使用以下方法来初始化相机:
private void initRecorder(Surface surface) throws IOException {
if (mCamera == null) {
mCamera = Camera.open();
mCamera.unlock();
}
if (mMediaRecorder == null) mMediaRecorder = new MediaRecorder();
mMediaRecorder.setPreviewDisplay(surface);
mMediaRecorder.setCamera(mCamera);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mMediaRecorder.setVideoEncodingBitRate(512 * 1000);
mMediaRecorder.setVideoFrameRate(30);
mMediaRecorder.setVideoSize(640, 480);
mMediaRecorder.setOutputFile(videoFile);
try {
mMediaRecorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
}
initSuccess = true;
}
当我尝试停止相机或调用surfaceDestroyed
时,我调用以下方法:
private void resetCamera() {
mMediaRecorder.stop();
mMediaRecorder.reset();
mMediaRecorder.release();
mCamera.release();
mCamera = null;
try {
initRecorder(mHolder.getSurface());
} catch (IOException e) {
e.printStackTrace();
}
}
但是,在此代码中的某个地方,我收到致命信号 11 错误。 显然,代码试图非法访问部分内存。
我想知道,我将如何解决此错误?
以下是从我开始录制视频到停止录制的 Logcat 转储:
D/dalvikvm: GC_FOR_ALLOC freed 1309K, 27% free 7434K/10168K, paused 9ms, total 9ms
I/dalvikvm: Could not compile trace for Ljava/util/Arrays;fill, offset 5
I/dalvikvm: ++++++++++++++++++++++++++++++++++++++++++++
I/dalvikvm: JIT_INFO: ME Issues while compiling trace Ljava/util/Arrays;fill, offset 5
I/dalvikvm: The trace provoked a spill.
I/dalvikvm: Trying less registerization from 1 to 0
D/dalvikvm: GC_FOR_ALLOC freed 1415K, 27% free 7438K/10168K, paused 10ms, total 10ms
A/libc: Fatal signal 11 (SIGSEGV) at 0x00000010 (code=1), thread 13774 (arch.treadmill3)
在 mMediaRecorder.release() 之后;你必须写 mMediaRecorder = null;因为 release() 方法似乎几乎没有错误。喜欢这个:
if (mMediaRecorder != null) {
mMediaRecorder.stop();
mMediaRecorder.reset();
mMediaRecorder.release();
mMediaRecorder = null;
}