ImageConverter引起的 invalid address or address of corrupt block 0xb7feab58 passed to dlfree

虹软人脸识别,其方法要传NV21格式的byte[], github上有一个虹软的Demo,是不是虹软工作人员写的不清楚,这个Demo里bitmap转NV21格式byte[]用的是一个第三方库https://github.com/gqjjqg/android-extend,
用法如下:

ImageConverter convert = new ImageConverter();
convert.initial(mBitmap.getWidth(), mBitmap.getHeight(), ImageConverter.CP_PAF_NV21);
if (convert.convert(mBitmap, data)) {
    Log.d(TAG, "convert ok!");
}
convert.destroy();
!

本来是没有问题,但是我这边需求是大量检测照片,所以会频繁多次调用这个方法,以900次为例,在某些平板上是没有问题的,但是个别平板在100次左右时会报错:

07-18 21:44:53.719 6365-6609/cn.gxh.face A/libc: invalid address or address of corrupt block 0xb80402f8 passed to dlfree
    Fatal signal 11 (SIGSEGV), code 1, fault addr 0xdeadbaad in tid 6609 (pool-2-thread-2)
07-18 21:44:53.820 175-175/? E/DEBUG: Failed to find a valid tombstone, default to using tombstone 0.
    failed to open tombstone file '/data/tombstones/tombstone_00': No such file or directory

解决方法:可以换一个转换方法。

public byte[] getNV21(int inputWidth, int inputHeight, Bitmap scaled) {

        int[] argb = new int[inputWidth * inputHeight];

        scaled.getPixels(argb, 0, inputWidth, 0, 0, inputWidth, inputHeight);
        byte[] yuv = new byte[inputWidth * inputHeight * 3 / 2];

        encodeYUV420SP(yuv, argb, inputWidth, inputHeight);

        return yuv;
    }

    private void encodeYUV420SP(byte[] yuv420sp, int[] argb, int width, int height) {
        int frameSize = width * height;

        int yIndex = 0;
        int uvIndex = frameSize;

        int R, G, B, Y, U, V;
        int index = 0;

        for (int j = 0; j < height; j++) {
            for (int i = 0; i < width; i++) {
                R = (argb[index] & 0xff0000) >> 16;
                G = (argb[index] & 0xff00) >> 8;
                B = (argb[index] & 0xff);

                // well known RGB to YUV algorithm
                Y = ((66 * R + 129 * G + 25 * B + 128) >> 8) + 16;
                U = ((-38 * R - 74 * G + 112 * B + 128) >> 8) + 128;
                V = ((112 * R - 94 * G - 18 * B + 128) >> 8) + 128;

                yuv420sp[yIndex++] = (byte) ((Y < 0) ? 0 : ((Y > 255) ? 255 : Y));

                if (j % 2 == 0 && index % 2 == 0 && uvIndex < yuv420sp.length - 2) {
                    yuv420sp[uvIndex++] = (byte) ((V < 0) ? 0 : ((V > 255) ? 255 : V));
                    yuv420sp[uvIndex++] = (byte) ((U < 0) ? 0 : ((U > 255) ? 255 : U));
                }
                index++;
            }
        }
    }

经测试,可用。

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