fix contents of render_pictures JSON summary

tools/PictureRenderer.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "PictureRenderer.h"
 #include "picture_utils.h"
 #include "SamplePipeControllers.h"
@@ skipping 305 matching lines @@
 #endif
 }
 
 uint32_t PictureRenderer::recordFlags() {
     return (kNone_BBoxHierarchyType == fBBoxHierarchyType)
                             ? 0
                             : SkPicture::kUsePathBoundsForClip_RecordingFlag;
 }
 
 /**
- * Write the canvas to the specified path.
+ * Write the canvas to an image file and/or JSON summary.
  *
  * @param canvas Must be non-null. Canvas to be written to a file.
- * @param outputDir If nonempty, write the binary image to a file within this directory.
+ * @param outputDir If nonempty, write the binary image to a file within this directory;
+ *     if empty, don't write out the image at all.
  * @param inputFilename If we are writing out a binary image, use this to build its filename.
- * @param jsonSummaryPtr If not null, add image results to this summary.
+ * @param jsonSummaryPtr If not null, add image results (checksum) to this summary.
  * @param useChecksumBasedFilenames If true, use checksum-based filenames when writing to disk.
  * @param tileNumberPtr If not null, which tile number this image contains.
- * @return bool True if the Canvas is written to a file.
  *
- * TODO(epoger): Right now, all canvases must pass through this function in order to be appended
- * to the ImageResultsSummary.  We need some way to add bitmaps to the ImageResultsSummary
- * even if --writePath has not been specified (and thus this function is not called).
- *
- * One fix would be to pass in these path elements separately, and allow this function to be
- * called even if --writePath was not specified...
- *  const char *outputDir   // NULL if we don't want to write image files to disk
- *  const char *filename    // name we use within JSON summary, and as the filename within outputDir
- *
- * UPDATE: Now that outputDir and inputFilename are passed separately, we should be able to do that.
+ * @return bool True if the operation completed successfully.
  */
 static bool write(SkCanvas* canvas, const SkString& outputDir, const SkString& inputFilename,
                   ImageResultsSummary *jsonSummaryPtr, bool useChecksumBasedFilenames,
                   const int* tileNumberPtr=NULL) {
     SkASSERT(canvas != NULL);
     if (NULL == canvas) {
         return false;
     }
 
     SkBitmap bitmap;
@@ skipping 44 matching lines @@
             outputRelativePath.append("/");  // always use "/", even on Windows
             outputRelativePath.append(outputFilename);
         } else {
             outputRelativePath.set(outputFilename);
         }
 
         jsonSummaryPtr->add(inputFilename.c_str(), outputRelativePath.c_str(),
                             hash, tileNumberPtr);
     }
 
-    SkASSERT(!outputDir.isEmpty()); // TODO(epoger): we want to remove this constraint,
-                                    // as noted above
+    if (outputDir.isEmpty()) {
+        return true;
+    }
+
     SkString dirPath;
     if (outputSubdirPtr) {
         dirPath = SkOSPath::SkPathJoin(outputDir.c_str(), outputSubdirPtr);
         sk_mkdir(dirPath.c_str());
     } else {
         dirPath.set(outputDir);
     }
     SkString fullPath = SkOSPath::SkPathJoin(dirPath.c_str(), outputFilename.c_str());
     return SkImageEncoder::EncodeFile(fullPath.c_str(), bitmap, SkImageEncoder::kPNG_Type, 100);
 }
@@ skipping 41 matching lines @@
     if (NULL == fCanvas.get() || NULL == fPicture) {
         return false;
     }
 
     PipeController pipeController(fCanvas.get());
     SkGPipeWriter writer;
     SkCanvas* pipeCanvas = writer.startRecording(&pipeController);
     pipeCanvas->drawPicture(*fPicture);
     writer.endRecording();
     fCanvas->flush();
-    if (!fOutputDir.isEmpty()) {
-        return write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
-                     fUseChecksumBasedFilenames);
-    }
     if (NULL != out) {
         *out = SkNEW(SkBitmap);
         setup_bitmap(*out, fPicture->width(), fPicture->height());
         fCanvas->readPixels(*out, 0, 0);
     }
-    return true;
+    return write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
+                 fUseChecksumBasedFilenames);
 }
 
 SkString PipePictureRenderer::getConfigNameInternal() {
     return SkString("pipe");
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////
 
 void SimplePictureRenderer::init(SkPicture* picture, const SkString* outputDir,
                                  const SkString* inputFilename, bool useChecksumBasedFilenames) {
     INHERITED::init(picture, outputDir, inputFilename, useChecksumBasedFilenames);
     this->buildBBoxHierarchy();
 }
 
 bool SimplePictureRenderer::render(SkBitmap** out) {
     SkASSERT(fCanvas.get() != NULL);
     SkASSERT(NULL != fPicture);
     if (NULL == fCanvas.get() || NULL == fPicture) {
         return false;
     }
 
     fCanvas->drawPicture(*fPicture);
     fCanvas->flush();
-    if (!fOutputDir.isEmpty()) {
-        return write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
-                     fUseChecksumBasedFilenames);
-    }
-
     if (NULL != out) {
         *out = SkNEW(SkBitmap);
         setup_bitmap(*out, fPicture->width(), fPicture->height());
         fCanvas->readPixels(*out, 0, 0);
     }
-
-    return true;
+    return write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
+                 fUseChecksumBasedFilenames);
 }
 
 SkString SimplePictureRenderer::getConfigNameInternal() {
     return SkString("simple");
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////
 
 TiledPictureRenderer::TiledPictureRenderer()
     : fTileWidth(kDefaultTileWidth)
@@ skipping 187 matching lines @@
 
     SkBitmap bitmap;
     if (out){
         *out = SkNEW(SkBitmap);
         setup_bitmap(*out, fPicture->width(), fPicture->height());
         setup_bitmap(&bitmap, fTileWidth, fTileHeight);
     }
     bool success = true;
     for (int i = 0; i < fTileRects.count(); ++i) {
         draw_tile_to_canvas(fCanvas, fTileRects[i], fPicture);
-        if (!fOutputDir.isEmpty()) {
-            success &= write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
-                             fUseChecksumBasedFilenames, &i);
-        }
+        success &= write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
+                         fUseChecksumBasedFilenames, &i);
         if (NULL != out) {
             if (fCanvas->readPixels(&bitmap, 0, 0)) {
                 // Add this tile to the entire bitmap.
                 bitmapCopyAtOffset(bitmap, *out, SkScalarFloorToInt(fTileRects[i].left()),
                                    SkScalarFloorToInt(fTileRects[i].top()));
             } else {
                 success = false;
             }
         }
     }
@@ skipping 61 matching lines @@
         SkGraphics::SetTLSFontCacheLimit(1024 * 1024);
 
         SkBitmap bitmap;
         if (fBitmap != NULL) {
             // All tiles are the same size.
             setup_bitmap(&bitmap, SkScalarFloorToInt(fRects[0].width()), SkScalarFloorToInt(fRects[0].height()));
         }
 
         for (int i = fStart; i < fEnd; i++) {
             draw_tile_to_canvas(fCanvas, fRects[i], fClone);
-            if ((!fOutputDir.isEmpty())
-                && !write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
-                          fUseChecksumBasedFilenames, &i)
+            if (!write(fCanvas, fOutputDir, fInputFilename, fJsonSummaryPtr,
+                       fUseChecksumBasedFilenames, &i)
                 && fSuccess != NULL) {
                 *fSuccess = false;
                 // If one tile fails to write to a file, do not continue drawing the rest.
                 break;
             }
             if (fBitmap != NULL) {
                 if (fCanvas->readPixels(&bitmap, 0, 0)) {
                     SkAutoLockPixels alp(*fBitmap);
                     bitmapCopyAtOffset(bitmap, fBitmap, SkScalarFloorToInt(fRects[i].left()),
                                        SkScalarFloorToInt(fRects[i].top()));
@@ skipping 207 matching lines @@
     virtual SkString getConfigNameInternal() SK_OVERRIDE {
         return SkString("picture_clone");
     }
 };
 
 PictureRenderer* CreatePictureCloneRenderer() {
     return SkNEW(PictureCloneRenderer);
 }
 
 } // namespace sk_tools