我通过使用
YUV_420_888
图像格式并将其手动转换为
JPEG
图像格式解决了此问题。
imageReader = ImageReader.newInstance(MAX_PREVIEW_WIDTH, MAX_PREVIEW_HEIGHT, ImageFormat.YUV_420_888, 5);imageReader.setonImageAvailableListener(this, null);
Surface imageSurface = imageReader.getSurface();List<Surface> surfaceList = new ArrayList<>();//...add other surfacespreviewRequestBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);previewRequestBuilder.addTarget(imageSurface); surfaceList.add(imageSurface);cameraDevice.createCaptureSession(surfaceList, new CameraCaptureSession.StateCallback() {//...implement onConfigured, onConfigureFailed for StateCallback}, null);@Overridepublic void onImageAvailable(ImageReader reader) { Image image = reader.acquireLatestImage(); if (image != null) { //converting to JPEG byte[] jpegData = ImageUtils.imageToByteArray(image); //write to file (for example ..some_path/frame.jpg) FileManager.writeframe(FILE_NAME, jpegData); image.close(); }}public final class ImageUtil { public static byte[] imageToByteArray(Image image) { byte[] data = null; if (image.getFormat() == ImageFormat.JPEG) { Image.Plane[] planes = image.getPlanes(); ByteBuffer buffer = planes[0].getBuffer(); data = new byte[buffer.capacity()]; buffer.get(data); return data; } else if (image.getFormat() == ImageFormat.YUV_420_888) { data = NV21toJPEG( YUV_420_888toNV21(image), image.getWidth(), image.getHeight()); } return data; } private static byte[] YUV_420_888toNV21(Image image) { byte[] nv21; ByteBuffer yBuffer = image.getPlanes()[0].getBuffer(); ByteBuffer uBuffer = image.getPlanes()[1].getBuffer(); ByteBuffer vBuffer = image.getPlanes()[2].getBuffer(); int ySize = yBuffer.remaining(); int uSize = uBuffer.remaining(); int vSize = vBuffer.remaining(); nv21 = new byte[ySize + uSize + vSize]; //U and V are swapped yBuffer.get(nv21, 0, ySize); vBuffer.get(nv21, ySize, vSize); uBuffer.get(nv21, ySize + vSize, uSize); return nv21; } private static byte[] NV21toJPEG(byte[] nv21, int width, int height) { ByteArrayOutputStream out = new ByteArrayOutputStream(); YuvImage yuv = new YuvImage(nv21, ImageFormat.NV21, width, height, null); yuv.compressToJpeg(new Rect(0, 0, width, height), 100, out); return out.toByteArray(); }}public final class FileManager { public static void writeframe(String fileName, byte[] data) { try { BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(fileName)); bos.write(data); bos.flush(); bos.close();// Log.e(TAG, "" + data.length + " bytes have been written to " + filesDir + fileName + ".jpg"); } catch (IOException e) { e.printStackTrace(); } }}
