pb_80 26 libavcodec/lossless_videodsp.c #define pb_80 (~0UL / 255 * 0x80) pb_80 26 libavcodec/lossless_videoencdsp.c #define pb_80 (~0UL / 255 * 0x80) pb_80 29 libavcodec/pngdsp.c #define pb_80 (~0UL / 255 * 0x80)