Enable/disable image smoothing based on image interpolate value. (bug 1722191)

While some of the output looks worse to my eye, this behavior more
closely matches what I see when I open the PDFs in Adobe acrobat.

Fixes: #4706, #9713, #8245, #1344

test/driver.js

@@ -20,15 +20,17 @@
 const {
   AnnotationLayer,
   AnnotationMode,
+  CSS_PIXELS_PER_INCH,
   getDocument,
   GlobalWorkerOptions,
+  PDF_PIXELS_PER_INCH,
   renderTextLayer,
   XfaLayer,
 } = pdfjsLib;
 const { SimpleLinkService } = pdfjsViewer;
 
 const WAITING_TIME = 100; // ms
-const PDF_TO_CSS_UNITS = 96.0 / 72.0;
+const PDF_TO_CSS_UNITS = CSS_PIXELS_PER_INCH / PDF_PIXELS_PER_INCH;
 const CMAP_URL = "/build/generic/web/cmaps/";
 const CMAP_PACKED = true;
 const STANDARD_FONT_DATA_URL = "/build/generic/web/standard_fonts/";

test/pdfs/.gitignore

@@ -69,6 +69,7 @@
 !issue8229.pdf
 !issue8276_reduced.pdf
 !issue8372.pdf
+!issue9713.pdf
 !xfa_filled_imm1344e.pdf
 !issue8424.pdf
 !issue8480.pdf
@@ -150,6 +151,7 @@
 !complex_ttf_font.pdf
 !issue3694_reduced.pdf
 !extgstate.pdf
+!issue4706.pdf
 !rotation.pdf
 !simpletype3font.pdf
 !sizes.pdf

test/test_manifest.json

@@ -3110,6 +3110,12 @@
        "rounds": 1,
        "type": "eq"
     },
+    {  "id": "issue4706",
+       "file": "pdfs/issue4706.pdf",
+       "md5": "f3e90a3cf52550583fa2a07a138b8660",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "issue11242",
        "file": "pdfs/issue11242_reduced.pdf",
        "md5": "ba50b6ee537f3e815ccfe0c99e598e05",
@@ -4421,6 +4427,12 @@
       "link": true,
       "type": "eq"
     },
+    {  "id": "issue9713",
+       "file": "pdfs/issue9713.pdf",
+       "md5": "a62bd42d12271105b26a68c8eae5ea5f",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "issue1936-text",
        "file": "pdfs/issue1936.pdf",
        "md5": "7302eb9b6a626308e2a933aaed9e1756",