png_filter_row    316 libavcodec/pngdec.c         png_filter_row(&s->dsp, ptr, s->crow_buf[0], s->crow_buf + 1,
png_filter_row    350 libavcodec/pngdec.c                 png_filter_row(&s->dsp, s->tmp_row, s->crow_buf[0], s->crow_buf + 1,
png_filter_row    177 libavcodec/pngenc.c             png_filter_row(s, buf1 + 1, pred, src, top, size, bpp);
png_filter_row    189 libavcodec/pngenc.c         png_filter_row(s, dst + 1, pred, src, top, size, bpp);