M_SOS             354 3rdparty/libjpeg/jcmarker.c   emit_marker(cinfo, M_SOS);
M_SOS             386 3rdparty/libjpeg/jcmarker.c   emit_marker(cinfo, M_SOS);
M_SOS            1151 3rdparty/libjpeg/jdmarker.c     case M_SOS: