Add getYUV8Planes() API to SkCodec

dm/DM.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "CrashHandler.h"
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
@@ skipping 226 matching lines @@
             break;
         case CodecSrc::kScanline_Mode:
             folder.append("scanline");
             break;
         case CodecSrc::kStripe_Mode:
             folder.append("stripe");
             break;
         case CodecSrc::kSubset_Mode:
             folder.append("codec_subset");
             break;
+        case CodecSrc::kGen_Mode:
+            folder.append("gen");
+            break;
     }
 
     switch (dstColorType) {
         case CodecSrc::kGrayscale_Always_DstColorType:
             folder.append("_kGray8");
             break;
         case CodecSrc::kIndex8_Always_DstColorType:
             folder.append("_kIndex8");
             break;
         default:
@@ skipping 51 matching lines @@
         return;
     }
 
     // Native Scales
     // TODO (msarett): Implement scaling tests for SkImageDecoder in order to compare with these
     //                 tests.  SkImageDecoder supports downscales by integer factors.
     // SkJpegCodec natively supports scaling to: 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875
     const float nativeScales[] = { 0.125f, 0.25f, 0.375f, 0.5f, 0.625f, 0.750f, 0.875f, 1.0f };
 
     const CodecSrc::Mode nativeModes[] = { CodecSrc::kCodec_Mode, CodecSrc::kCodecZeroInit_Mode,
-            CodecSrc::kScanline_Mode, CodecSrc::kStripe_Mode, CodecSrc::kSubset_Mode };
+            CodecSrc::kScanline_Mode, CodecSrc::kStripe_Mode, CodecSrc::kSubset_Mode,
+            CodecSrc::kGen_Mode };
 
     CodecSrc::DstColorType colorTypes[3];
     uint32_t numColorTypes;
     switch (codec->getInfo().colorType()) {
         case kGray_8_SkColorType:
             // FIXME: Is this a long term solution for testing wbmps decodes to kIndex8?
             // Further discussion on this topic is at https://bug.skia.org/3683 .
             // This causes us to try to convert grayscale jpegs to kIndex8.  We currently
             // fail non-fatally in this case.
             colorTypes[0] = CodecSrc::kGetFromCanvas_DstColorType;
             colorTypes[1] = CodecSrc::kGrayscale_Always_DstColorType;
             colorTypes[2] = CodecSrc::kIndex8_Always_DstColorType;
             numColorTypes = 3;
             break;
         case kIndex_8_SkColorType:
             colorTypes[0] = CodecSrc::kGetFromCanvas_DstColorType;
             colorTypes[1] = CodecSrc::kIndex8_Always_DstColorType;
             numColorTypes = 2;
             break;
         default:
             colorTypes[0] = CodecSrc::kGetFromCanvas_DstColorType;
             numColorTypes = 1;
             break;
     }
 
-    for (float scale : nativeScales) {
-        for (CodecSrc::Mode mode : nativeModes) {
+
+    for (CodecSrc::Mode mode : nativeModes) {
+        // SkCodecImageGenerator only runs for the default colorType
+        // recommended by SkCodec.  There is no need to generate multiple
+        // tests for different colorTypes.
+        // TODO (msarett): Add scaling support to SkCodecImageGenerator.
+        if (CodecSrc::kGen_Mode == mode) {
+            // FIXME: The gpu backend does not draw kGray sources correctly. (skbug.com/4822)
+            if (kGray_8_SkColorType != codec->getInfo().colorType()) {
+                push_codec_src(path, mode, CodecSrc::kGetFromCanvas_DstColorType, 1.0f);
+            }
+            continue;
+        }
+
+        for (float scale : nativeScales) {
             for (uint32_t i = 0; i < numColorTypes; i++) {
                 push_codec_src(path, mode, colorTypes[i], scale);
             }
         }
     }
 
     // https://bug.skia.org/4428
     bool subset = false;
     // The following image types are supported by BitmapRegionDecoder,
     // so we will test full image decodes and subset decodes.
@@ skipping 887 matching lines @@
                                                            Reporter* reporter,
                                                            GrContextFactory* factory);
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif