PNG_FILTER_VALUE_NONE  259 libavcodec/pngdec.c     case PNG_FILTER_VALUE_NONE:
PNG_FILTER_VALUE_NONE  171 libavcodec/pngenc.c     case PNG_FILTER_VALUE_NONE:
PNG_FILTER_VALUE_NONE 1024 libavcodec/pngenc.c                                  PNG_FILTER_VALUE_NONE,
PNG_FILTER_VALUE_NONE 1030 libavcodec/pngenc.c         s->filter_type = PNG_FILTER_VALUE_NONE;
PNG_FILTER_VALUE_NONE 1116 libavcodec/pngenc.c     { "pred", "Prediction method", OFFSET(filter_type), AV_OPT_TYPE_INT, { .i64 = PNG_FILTER_VALUE_NONE }, PNG_FILTER_VALUE_NONE, PNG_FILTER_VALUE_MIXED, VE, "pred" },
PNG_FILTER_VALUE_NONE 1117 libavcodec/pngenc.c         { "none",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PNG_FILTER_VALUE_NONE },  INT_MIN, INT_MAX, VE, "pred" },