add SkPixmap and external locking to bitmaps

tests/BitmapCopyTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkRect.h"
 #include "Test.h"
@@ skipping 143 matching lines @@
     }
 };
 
 // A function to verify that two bitmaps contain the same pixel values
 // at all coordinates indicated by coords. Simplifies verification of
 // copied bitmaps.
 static void reportCopyVerification(const SkBitmap& bm1, const SkBitmap& bm2,
                             Coordinates& coords,
                             const char* msg,
                             skiatest::Reporter* reporter){
-    bool success = true;
-
     // Confirm all pixels in the list match.
     for (int i = 0; i < coords.length; ++i) {
-        success = success &&
-                  (getPixel(coords[i]->fX, coords[i]->fY, bm1) ==
-                   getPixel(coords[i]->fX, coords[i]->fY, bm2));
-    }
-
-    if (!success) {
-        ERRORF(reporter, "%s [colortype = %s]", msg,
-               gColorTypeName[bm1.colorType()]);
+        uint32_t p1 = getPixel(coords[i]->fX, coords[i]->fY, bm1);
+        uint32_t p2 = getPixel(coords[i]->fX, coords[i]->fY, bm2);
+//        SkDebugf("[%d] (%d %d) p1=%x p2=%x\n", i, coords[i]->fX, coords[i]->fY, p1, p2);
+        if (p1 != p2) {
+            ERRORF(reporter, "%s [colortype = %s]", msg, gColorTypeName[bm1.colorType()]);
+            break;
+        }
     }
 }
 
 // Writes unique pixel values at locations specified by coords.
 static void writeCoordPixels(SkBitmap& bm, const Coordinates& coords) {
     for (int i = 0; i < coords.length; ++i)
         setPixel(coords[i]->fX, coords[i]->fY, i, bm);
 }
 
 static const Pair gPairs[] = {
@@ skipping 441 matching lines @@
                         REPORTER_ASSERT(reporter, check_4x4_pixel(dstC, sx, sy));
                     } else {
                         REPORTER_ASSERT(reporter, 0 == dstC);
                     }
                 }
             }
         }
     }
 }