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| 1 /* | |
| 2 * Copyright 2015 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "CodecBenchPriv.h" | |
| 9 #include "SubsetTranslateBench.h" | |
| 10 #include "SubsetBenchPriv.h" | |
| 11 #include "SkData.h" | |
| 12 #include "SkCodec.h" | |
| 13 #include "SkImageDecoder.h" | |
| 14 #include "SkOSFile.h" | |
| 15 #include "SkStream.h" | |
| 16 | |
| 17 /* | |
| 18 * | |
| 19 * This benchmark is designed to test the performance of subset decoding. | |
| 20 * It uses input dimensions to decode the entire image where each block is susbe
tW x subsetH. | |
| 21 * | |
| 22 */ | |
| 23 | |
| 24 SubsetTranslateBench::SubsetTranslateBench(const SkString& path, | |
| 25 SkColorType colorType, | |
| 26 uint32_t subsetWidth, | |
| 27 uint32_t subsetHeight) | |
| 28 : fColorType(colorType) | |
| 29 , fSubsetWidth(subsetWidth) | |
| 30 , fSubsetHeight(subsetHeight) | |
| 31 { | |
| 32 // Parse the filename | |
| 33 SkString baseName = SkOSPath::Basename(path.c_str()); | |
| 34 | |
| 35 // Choose an informative color name | |
| 36 const char* colorName = color_type_to_str(fColorType); | |
| 37 | |
| 38 fName.printf("CodecSubsetTranslate_%dx%d_%s_%s", fSubsetWidth, | |
| 39 fSubsetHeight, baseName.c_str(), colorName); | |
| 40 | |
| 41 // Perform the decode setup | |
| 42 SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(path.c_str())); | |
| 43 fStream.reset(new SkMemoryStream(encoded)); | |
| 44 } | |
| 45 | |
| 46 const char* SubsetTranslateBench::onGetName() { | |
| 47 return fName.c_str(); | |
| 48 } | |
| 49 | |
| 50 bool SubsetTranslateBench::isSuitableFor(Backend backend) { | |
| 51 return kNonRendering_Backend == backend; | |
| 52 } | |
| 53 | |
| 54 // Allows allocating the bitmap first, and then writing to them later (in startS
canlineDecode) | |
| 55 static SkPMColor* get_colors(SkBitmap* bm) { | |
| 56 SkColorTable* ct = bm->getColorTable(); | |
| 57 if (!ct) { | |
| 58 return nullptr; | |
| 59 } | |
| 60 | |
| 61 return const_cast<SkPMColor*>(ct->readColors()); | |
| 62 } | |
| 63 | |
| 64 void SubsetTranslateBench::onDraw(int n, SkCanvas* canvas) { | |
| 65 // When the color type is kIndex8, we will need to store the color table. I
f it is | |
| 66 // used, it will be initialized by the codec. | |
| 67 int colorCount = 256; | |
| 68 SkPMColor colors[256]; | |
| 69 for (int count = 0; count < n; count++) { | |
| 70 SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(fStream->duplicate()
)); | |
| 71 SkASSERT(SkCodec::kOutOfOrder_SkScanlineOrder != codec->getScanlineOrder
()); | |
| 72 const SkImageInfo info = codec->getInfo().makeColorType(fColorType); | |
| 73 | |
| 74 SkBitmap bitmap; | |
| 75 // Note that we use the same bitmap for all of the subsets. | |
| 76 // It might be larger than necessary for the end subsets. | |
| 77 SkImageInfo subsetInfo = info.makeWH(fSubsetWidth, fSubsetHeight); | |
| 78 alloc_pixels(&bitmap, subsetInfo, colors, colorCount); | |
| 79 | |
| 80 for (int x = 0; x < info.width(); x += fSubsetWidth) { | |
| 81 for (int y = 0; y < info.height(); y += fSubsetHeight) { | |
| 82 const uint32_t currSubsetWidth = | |
| 83 x + (int) fSubsetWidth > info.width() ? | |
| 84 info.width() - x : fSubsetWidth; | |
| 85 const uint32_t currSubsetHeight = | |
| 86 y + (int) fSubsetHeight > info.height() ? | |
| 87 info.height() - y : fSubsetHeight; | |
| 88 | |
| 89 // The scanline decoder will handle subsetting in the x-dimensio
n. | |
| 90 SkIRect subset = SkIRect::MakeXYWH(x, 0, currSubsetWidth, | |
| 91 codec->getInfo().height()); | |
| 92 SkCodec::Options options; | |
| 93 options.fSubset = ⊂ | |
| 94 | |
| 95 SkDEBUGCODE(SkCodec::Result result =) | |
| 96 codec->startScanlineDecode(info, &options, get_colors(&bitmap),
&colorCount); | |
| 97 SkASSERT(SkCodec::kSuccess == result); | |
| 98 | |
| 99 SkDEBUGCODE(bool success =) codec->skipScanlines(y); | |
| 100 SkASSERT(success); | |
| 101 | |
| 102 SkDEBUGCODE(uint32_t lines =) codec->getScanlines(bitmap.getPixe
ls(), | |
| 103 currSubsetHeight, bitmap.rowBytes()); | |
| 104 SkASSERT(currSubsetHeight == lines); | |
| 105 } | |
| 106 } | |
| 107 } | |
| 108 } | |
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