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Side by Side Diff: bench/subset/SubsetZoomBench.cpp

Issue 1230033004: Allow creating multiple scanline decoders. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Progressive scanline decoder needs to handle rewind on first call. Created 5 years, 5 months ago
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1 /* 1 /*
2 * Copyright 2015 Google Inc. 2 * Copyright 2015 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #include "SubsetZoomBench.h" 8 #include "SubsetZoomBench.h"
9 #include "SubsetBenchPriv.h" 9 #include "SubsetBenchPriv.h"
10 #include "SkData.h" 10 #include "SkData.h"
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56 void SubsetZoomBench::onDraw(const int n, SkCanvas* canvas) { 56 void SubsetZoomBench::onDraw(const int n, SkCanvas* canvas) {
57 // When the color type is kIndex8, we will need to store the color table. I f it is 57 // When the color type is kIndex8, we will need to store the color table. I f it is
58 // used, it will be initialized by the codec. 58 // used, it will be initialized by the codec.
59 int colorCount; 59 int colorCount;
60 SkPMColor colors[256]; 60 SkPMColor colors[256];
61 if (fUseCodec) { 61 if (fUseCodec) {
62 for (int count = 0; count < n; count++) { 62 for (int count = 0; count < n; count++) {
63 SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(fStream->duplica te())); 63 SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(fStream->duplica te()));
64 const SkImageInfo info = codec->getInfo().makeColorType(fColorType); 64 const SkImageInfo info = codec->getInfo().makeColorType(fColorType);
65 SkAutoTDeleteArray<uint8_t> row(SkNEW_ARRAY(uint8_t, info.minRowByte s())); 65 SkAutoTDeleteArray<uint8_t> row(SkNEW_ARRAY(uint8_t, info.minRowByte s()));
66 SkScanlineDecoder* scanlineDecoder = codec->getScanlineDecoder( 66 SkAutoTDelete<SkScanlineDecoder> scanlineDecoder(codec->getScanlineD ecoder(
67 info, NULL, colors, &colorCount); 67 info, NULL, colors, &colorCount));
68 68
69 const int centerX = info.width() / 2; 69 const int centerX = info.width() / 2;
70 const int centerY = info.height() / 2; 70 const int centerY = info.height() / 2;
71 int w = fSubsetWidth; 71 int w = fSubsetWidth;
72 int h = fSubsetHeight; 72 int h = fSubsetHeight;
73 do { 73 do {
74 const int subsetStartX = SkTMax(0, centerX - w / 2); 74 const int subsetStartX = SkTMax(0, centerX - w / 2);
75 const int subsetStartY = SkTMax(0, centerY - h / 2); 75 const int subsetStartY = SkTMax(0, centerY - h / 2);
76 const int subsetWidth = SkTMin(w, info.width() - subsetStartX); 76 const int subsetWidth = SkTMin(w, info.width() - subsetStartX);
77 const int subsetHeight = SkTMin(h, info.height() - subsetStartY) ; 77 const int subsetHeight = SkTMin(h, info.height() - subsetStartY) ;
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110 SkBitmap bitmap; 110 SkBitmap bitmap;
111 SkIRect rect = SkIRect::MakeXYWH(subsetStartX, subsetStartY, sub setWidth, 111 SkIRect rect = SkIRect::MakeXYWH(subsetStartX, subsetStartY, sub setWidth,
112 subsetHeight); 112 subsetHeight);
113 decoder->decodeSubset(&bitmap, rect, fColorType); 113 decoder->decodeSubset(&bitmap, rect, fColorType);
114 w <<= 1; 114 w <<= 1;
115 h <<= 1; 115 h <<= 1;
116 } while (w < 2 * width || h < 2 * height); 116 } while (w < 2 * width || h < 2 * height);
117 } 117 }
118 } 118 }
119 } 119 }
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