997     const int bottom_border, int* ref_block_start_x, int* ref_block_start_y,  in GetReferenceBlockPosition()  argument
999   *ref_block_start_x = GetPixelPositionFromHighScale(start_x, 0, 0);  in GetReferenceBlockPosition()
1004   *ref_block_start_x -= kConvolveBorderLeftTop;  in GetReferenceBlockPosition()
1020   return *ref_block_start_x < (ref_start_x - left_border) ||  in GetReferenceBlockPosition()
1034     const int ref_block_start_x, const int ref_block_end_x,  in BuildConvolveBlock()  argument
1053   const int copy_start_x = Clip3(ref_block_start_x, ref_start_x, ref_last_x);  in BuildConvolveBlock()
1057   const bool extend_left = ref_block_start_x < ref_start_x;  in BuildConvolveBlock()
1060   const bool out_of_right = copy_end_x < ref_block_start_x;  in BuildConvolveBlock()
1074     const int left_width = copy_start_x - ref_block_start_x;  in BuildConvolveBlock()
1139   int ref_block_start_x;  in BlockInterPrediction()  local
1149       reference_buffer->bottom_border(plane), &ref_block_start_x,  in BlockInterPrediction()
1179                     ref_block_start_x * pixel_size;  in BlockInterPrediction()
1184                     (ref_block_start_x + kConvolveBorderLeftTop) * pixel_size;  in BlockInterPrediction()
1199           ref_last_x, ref_start_y, ref_last_y, step_y, ref_block_start_x,  in BlockInterPrediction()
1207           ref_last_x, ref_start_y, ref_last_y, step_y, ref_block_start_x,  in BlockInterPrediction()