vp8_quality       174 ext/gd/libgd/gd_webp.c 	int vp8_quality;
vp8_quality       189 ext/gd/libgd/gd_webp.c 	vp8_quality = mapQualityToVP8QP(quantization);
vp8_quality       197 ext/gd/libgd/gd_webp.c                      vp8_quality, &filedata, &yuv_nbytes, NULL);