AV_TOSTRING       288 libavcodec/x86/fdct_mmx.c #define S(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
AV_TOSTRING        30 libavutil/avutil.h #define AV_STRINGIFY(s)         AV_TOSTRING(s)
AV_TOSTRING        32 libswscale/swscale_internal.h #define STR(s)         AV_TOSTRING(s) //AV_STRINGIFY is too long