Use possible read_partial_scanlines() API in SkJpegCodec

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 290 matching lines @@
     SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded));
     if (nullptr == codec.get()) {
         SkDebugf("Couldn't create codec for %s.", path.c_str());
         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 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::kScanline_Mode,
-            CodecSrc::kStripe_Mode, CodecSrc::kSubset_Mode };
+    const CodecSrc::Mode nativeModes[] = { CodecSrc::kCodec_Mode, //CodecSrc::kScanline_Mode,
+            CodecSrc::kStripe_Mode, /*CodecSrc::kSubset_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;
@@ skipping 28 matching lines @@
         "jpg", "jpeg", "png", "webp",
         "JPG", "JPEG", "PNG", "WEBP",
     };
     for (const char* ext : exts) {
         if (path.endsWith(ext)) {
             subset = true;
             break;
         }
     }
 
-    const int sampleSizes[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
+    const int sampleSizes[] = { /*1, 2, 3, 4, 5, 6, 7, 8*/ };
 
     for (int sampleSize : sampleSizes) {
         for (uint32_t i = 0; i < numColorTypes; i++) {
             push_android_codec_src(path, AndroidCodecSrc::kFullImage_Mode, colorTypes[i],
                     sampleSize);
             if (subset) {
                 push_android_codec_src(path, AndroidCodecSrc::kDivisor_Mode, colorTypes[i],
                         sampleSize);
             }
         }
@@ skipping 67 matching lines @@
         folder.appendf("_%.3f", 1.0f / (float) sampleSize);
     }
 
     BRDSrc* src = new BRDSrc(path, strategy, mode, dstColorType, sampleSize);
     push_src("image", folder, src);
 }
 
 static void push_brd_srcs(Path path) {
 
     const SkBitmapRegionDecoder::Strategy strategies[] = {
-            SkBitmapRegionDecoder::kCanvas_Strategy,
-            SkBitmapRegionDecoder::kAndroidCodec_Strategy,
+            //SkBitmapRegionDecoder::kCanvas_Strategy,
+            //SkBitmapRegionDecoder::kAndroidCodec_Strategy,
     };
 
     // Test on a variety of sampleSizes, making sure to include:
     // - 2, 4, and 8, which are natively supported by jpeg
     // - multiples of 2 which are not divisible by 4 (analogous for 4)
     // - larger powers of two, since BRD clients generally use powers of 2
     // We will only produce output for the larger sizes on large images.
     const uint32_t sampleSizes[] = { 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 24, 32, 64 };
 
     // We will only test to one backend (8888), but we will test all of the
@@ skipping 55 matching lines @@
         "bmp", "gif", "jpg", "jpeg", "png", "webp", "ktx", "astc", "wbmp", "ico",
         "BMP", "GIF", "JPG", "JPEG", "PNG", "WEBP", "KTX", "ASTC", "WBMP", "ICO",
     };
     for (int i = 0; i < FLAGS_images.count(); i++) {
         const char* flag = FLAGS_images[i];
         if (sk_isdir(flag)) {
             for (size_t j = 0; j < SK_ARRAY_COUNT(exts); j++) {
                 SkOSFile::Iter it(flag, exts[j]);
                 for (SkString file; it.next(&file); ) {
                     SkString path = SkOSPath::Join(flag, file.c_str());
-                    push_src("image", "decode", new ImageSrc(path)); // Decode entire image
+                    //push_src("image", "decode", new ImageSrc(path)); // Decode entire image
                     push_codec_srcs(path);
                     if (brd_supported(exts[j])) {
                         push_brd_srcs(path);
                     }
                 }
             }
         } else if (sk_exists(flag)) {
             // assume that FLAGS_images[i] is a valid image if it is a file.
-            push_src("image", "decode", new ImageSrc(flag)); // Decode entire image.
+            //push_src("image", "decode", new ImageSrc(flag)); // Decode entire image.
             push_codec_srcs(flag);
-            push_brd_srcs(flag);
+            //push_brd_srcs(flag);
         }
     }
 }
 
 #if SK_SUPPORT_GPU
 static GrGLStandard get_gpu_api() {
     if (FLAGS_gpuAPI.contains("gl"))   { return kGL_GrGLStandard; }
     if (FLAGS_gpuAPI.contains("gles")) { return kGLES_GrGLStandard; }
     return kNone_GrGLStandard;
 }
@@ skipping 668 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