decoder: Fix bit_position swapping

[apps/agl-service-can-low-level.git] / low-can-binding / utils / converter.cpp

diff --git a/low-can-binding/utils/converter.cpp b/low-can-binding/utils/converter.cpp
index f790fc0..9e70bc9 100644 (file)
--- a/low-can-binding/utils/converter.cpp
+++ b/low-can-binding/utils/converter.cpp
@@ -69,6 +69,13 @@ uint32_t converter_t::bit_position_swap(uint32_t bit_position,uint32_t bit_size)
 {
        uint32_t start_byte_position = (uint32_t)(bit_position/8);
        uint32_t bit_size_rest = bit_size;
+
+       if((int)(bit_size-(8 + start_byte_position*8-bit_position%8))>0)
+       {
+               AFB_ERROR("Error: bit_position and bit_size getting out of range");
+               return bit_position;
+       }
+
        if(bit_size<=8 && ((bit_position+bit_size)%8==bit_size || (bit_position+bit_size)%8==0))
        {
                return (uint32_t)(start_byte_position*8 + (8-bit_size));