| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "CodecBenchPriv.h" |
| #include "SubsetZoomBench.h" |
| #include "SubsetBenchPriv.h" |
| #include "SkData.h" |
| #include "SkCodec.h" |
| #include "SkImageDecoder.h" |
| #include "SkOSFile.h" |
| #include "SkStream.h" |
| |
| /* |
| * |
| * This benchmark is designed to test the performance of subset decoding. |
| * Choose subsets to mimic a user zooming in or out on a photo. |
| * |
| */ |
| |
| SubsetZoomBench::SubsetZoomBench(const SkString& path, |
| SkColorType colorType, |
| uint32_t subsetWidth, |
| uint32_t subsetHeight, |
| bool useCodec) |
| : fColorType(colorType) |
| , fSubsetWidth(subsetWidth) |
| , fSubsetHeight(subsetHeight) |
| , fUseCodec(useCodec) |
| { |
| // Parse the filename |
| SkString baseName = SkOSPath::Basename(path.c_str()); |
| |
| // Choose an informative color name |
| const char* colorName = color_type_to_str(fColorType); |
| |
| fName.printf("%sSubsetZoom_%dx%d_%s_%s", fUseCodec ? "Codec" : "Image", fSubsetWidth, |
| fSubsetHeight, baseName.c_str(), colorName); |
| |
| // Perform the decode setup |
| SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(path.c_str())); |
| fStream.reset(new SkMemoryStream(encoded)); |
| } |
| |
| const char* SubsetZoomBench::onGetName() { |
| return fName.c_str(); |
| } |
| |
| bool SubsetZoomBench::isSuitableFor(Backend backend) { |
| return kNonRendering_Backend == backend; |
| } |
| |
| void SubsetZoomBench::onDraw(int n, SkCanvas* canvas) { |
| // When the color type is kIndex8, we will need to store the color table. If it is |
| // used, it will be initialized by the codec. |
| int colorCount; |
| SkPMColor colors[256]; |
| if (fUseCodec) { |
| for (int count = 0; count < n; count++) { |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(fStream->duplicate())); |
| const SkImageInfo info = codec->getInfo().makeColorType(fColorType); |
| SkAutoTDeleteArray<uint8_t> row(nullptr); |
| if (codec->getScanlineOrder() == SkCodec::kTopDown_SkScanlineOrder) { |
| row.reset(new uint8_t[info.minRowBytes()]); |
| } |
| |
| const int centerX = info.width() / 2; |
| const int centerY = info.height() / 2; |
| int w = fSubsetWidth; |
| int h = fSubsetHeight; |
| do { |
| SkDEBUGCODE(SkCodec::Result result = ) |
| codec->startScanlineDecode(info, nullptr, colors, &colorCount); |
| SkASSERT(SkCodec::kSuccess == result); |
| |
| const int subsetStartX = SkTMax(0, centerX - w / 2); |
| const int subsetStartY = SkTMax(0, centerY - h / 2); |
| const int subsetWidth = SkTMin(w, info.width() - subsetStartX); |
| const int subsetHeight = SkTMin(h, info.height() - subsetStartY); |
| // Note that if we subsetted and scaled in a single step, we could use the |
| // same bitmap - as is often done in actual use cases. |
| SkBitmap bitmap; |
| SkImageInfo subsetInfo = info.makeWH(subsetWidth, subsetHeight); |
| alloc_pixels(&bitmap, subsetInfo, colors, colorCount); |
| |
| uint32_t bpp = info.bytesPerPixel(); |
| |
| SkDEBUGCODE(result = ) codec->skipScanlines(subsetStartY); |
| SkASSERT(SkCodec::kSuccess == result); |
| |
| switch (codec->getScanlineOrder()) { |
| case SkCodec::kTopDown_SkScanlineOrder: |
| for (int y = 0; y < subsetHeight; y++) { |
| SkDEBUGCODE(result = ) codec->getScanlines(row.get(), 1, 0); |
| SkASSERT(SkCodec::kSuccess == result); |
| |
| memcpy(bitmap.getAddr(0, y), row.get() + subsetStartX * bpp, |
| subsetWidth * bpp); |
| } |
| break; |
| case SkCodec::kNone_SkScanlineOrder: { |
| // decode all scanlines that intersect the subset, and copy the subset |
| // into the output. |
| SkImageInfo stripeInfo = info.makeWH(info.width(), subsetHeight); |
| SkBitmap stripeBm; |
| alloc_pixels(&stripeBm, stripeInfo, colors, colorCount); |
| |
| SkDEBUGCODE(result = ) codec->getScanlines(stripeBm.getPixels(), |
| subsetHeight, stripeBm.rowBytes()); |
| SkASSERT(SkCodec::kSuccess == result); |
| |
| for (int y = 0; y < subsetHeight; y++) { |
| memcpy(bitmap.getAddr(0, y), |
| stripeBm.getAddr(subsetStartX, y), |
| subsetWidth * bpp); |
| } |
| break; |
| } |
| default: |
| // We currently are only testing kTopDown and kNone, which are the only |
| // two used by the subsets we care about. skbug.com/4428 |
| SkASSERT(false); |
| } |
| |
| w <<= 1; |
| h <<= 1; |
| } while (w < 2 * info.width() || h < 2 * info.height()); |
| } |
| } else { |
| for (int count = 0; count < n; count++) { |
| int width, height; |
| SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(fStream)); |
| SkAssertResult(decoder->buildTileIndex(fStream->duplicate(), &width, &height)); |
| |
| const int centerX = width / 2; |
| const int centerY = height / 2; |
| int w = fSubsetWidth; |
| int h = fSubsetHeight; |
| do { |
| const int subsetStartX = SkTMax(0, centerX - w / 2); |
| const int subsetStartY = SkTMax(0, centerY - h / 2); |
| const int subsetWidth = SkTMin(w, width - subsetStartX); |
| const int subsetHeight = SkTMin(h, height - subsetStartY); |
| SkBitmap bitmap; |
| SkIRect rect = SkIRect::MakeXYWH(subsetStartX, subsetStartY, subsetWidth, |
| subsetHeight); |
| SkAssertResult(decoder->decodeSubset(&bitmap, rect, fColorType)); |
| w <<= 1; |
| h <<= 1; |
| } while (w < 2 * width || h < 2 * height); |
| } |
| } |
| } |