Problems when scaling a YUV image using libyuv library

Question

I\'m developing a camera app based on Camera API 2 and I have found several problems using the libyuv. I want to convert YUV_420_888 images retriev

Answer 1

You can try that code that it uses the y_size instead of full size of your array.

    ...
    //Get input and output length
    int input_size = env->GetArrayLength(yuvByteArray_);
    int y_size = src_width * src_height;
    int out_size = out_height * out_width;

    //Generate input frame
    i420_input_frame.width = src_width;
    i420_input_frame.height = src_height;
    i420_input_frame.data = (uint8_t *) yuvByteArray;
    i420_input_frame.y = i420_input_frame.data;
    i420_input_frame.u = i420_input_frame.y + y_size;
    i420_input_frame.v = i420_input_frame.u + y_size / 4;

    //Generate output frame
    free(i420_output_frame.data);
    i420_output_frame.width = out_width;
    i420_output_frame.height = out_height;
    i420_output_frame.data = new unsigned char[out_size * 3 / 2];
    i420_output_frame.y = i420_output_frame.data;
    i420_output_frame.u = i420_output_frame.y + out_size;
    i420_output_frame.v = i420_output_frame.u + out_size / 4;
    ...

probably your code is based on that https://github.com/begeekmyfriend/yasea/blob/master/library/src/main/libenc/jni/libenc.cc and according to that code you have to use the y_size