PNG_INTERLACE_ADAM7_PASSES   52 contrib/libtests/pngunknown.c #define PNG_INTERLACE_ADAM7_PASSES 7
PNG_INTERLACE_ADAM7_PASSES   81 contrib/libtests/pngvalid.c #define PNG_INTERLACE_ADAM7_PASSES 7
PNG_INTERLACE_ADAM7_PASSES 2583 png.h          #define PNG_INTERLACE_ADAM7_PASSES 7