AFBC_DATA_BLOCK_HEIGHT
int height_in_blocks = ALIGN(fb->height, AFBC_DATA_BLOCK_HEIGHT)
/ AFBC_DATA_BLOCK_HEIGHT;
int y_offset_in_blocks = (new_state->src.y1 >> 16) / AFBC_DATA_BLOCK_HEIGHT;
AFBC_DATA_BLOCK_HEIGHT * fb->format->cpp[0];
AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT *