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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 "DecodingBench.h" |
| 9 #include "SkData.h" |
| 10 #include "SkImageDecoder.h" |
| 11 #include "SkOSFile.h" |
| 12 #include "SkStream.h" |
| 13 |
| 14 /* |
| 15 * |
| 16 * This benchmark is designed to test the performance of image decoding. |
| 17 * It is invoked from the nanobench.cpp file. |
| 18 * |
| 19 */ |
| 20 DecodingBench::DecodingBench(SkString path, SkColorType colorType) |
| 21 : fColorType(colorType) |
| 22 { |
| 23 // Parse filename and the color type to give the benchmark a useful name |
| 24 SkString baseName = SkOSPath::Basename(path.c_str()); |
| 25 const char* colorName; |
| 26 switch(colorType) { |
| 27 case kN32_SkColorType: |
| 28 colorName = "N32"; |
| 29 break; |
| 30 case kRGB_565_SkColorType: |
| 31 colorName = "565"; |
| 32 break; |
| 33 case kAlpha_8_SkColorType: |
| 34 colorName = "Alpha8"; |
| 35 break; |
| 36 default: |
| 37 colorName = "Unknown"; |
| 38 } |
| 39 fName.printf("Decode_%s_%s", baseName.c_str(), colorName); |
| 40 |
| 41 // Perform setup for the decode |
| 42 SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(path.c_str())); |
| 43 fStream.reset(new SkMemoryStream(encoded)); |
| 44 fDecoder.reset(SkImageDecoder::Factory(fStream.get())); |
| 45 } |
| 46 |
| 47 const char* DecodingBench::onGetName() { |
| 48 return fName.c_str(); |
| 49 } |
| 50 |
| 51 bool DecodingBench::isSuitableFor(Backend backend) { |
| 52 return kNonRendering_Backend == backend; |
| 53 } |
| 54 |
| 55 void DecodingBench::onDraw(const int n, SkCanvas* canvas) { |
| 56 SkBitmap bitmap; |
| 57 for (int i = 0; i < n; i++) { |
| 58 fStream->rewind(); |
| 59 fDecoder->decode(fStream, &bitmap, fColorType, |
| 60 SkImageDecoder::kDecodePixels_Mode); |
| 61 } |
| 62 } |
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