Y2                177 ext/gd/libgd/webpimg.c                   const uint8* Y2,
Y2                190 ext/gd/libgd/webpimg.c       double diff = Y1[row_idx + x] - Y2[row_idx + x];
Y2                220 ext/gd/libgd/webpimg.c   uint8* Y2 = NULL;
Y2                228 ext/gd/libgd/webpimg.c              &Y2,
Y2                234 ext/gd/libgd/webpimg.c   psnr = GetPSNRYuv(Y1, U1, V1, Y2, U2, V2, w, h);
Y2                235 ext/gd/libgd/webpimg.c   free(Y2);