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      1 /*
      2  * Copyright 2014 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 "gm.h"
      9 
     10 #include "Resources.h"
     11 #include "SkCanvas.h"
     12 #include "SkData.h"
     13 #include "SkImageGenerator.h"
     14 #include "SkImageDecoder.h"
     15 #include "SkOSFile.h"
     16 #include "SkTextureCompressor.h"
     17 
     18 static const char *kASTCFilenames[] = {
     19     "mandrill_128x128_4x4.astc",    // kASTC_4x4_Format
     20     "mandrill_130x128_5x4.astc",    // kASTC_5x4_Format
     21     "mandrill_130x130_5x5.astc",    // kASTC_5x5_Format
     22     "mandrill_132x130_6x5.astc",    // kASTC_6x5_Format
     23     "mandrill_132x132_6x6.astc",    // kASTC_6x6_Format
     24     "mandrill_128x130_8x5.astc",    // kASTC_8x5_Format
     25     "mandrill_128x132_8x6.astc",    // kASTC_8x6_Format
     26     "mandrill_128x128_8x8.astc",    // kASTC_8x8_Format
     27     "mandrill_130x130_10x5.astc",   // kASTC_10x5_Format
     28     "mandrill_130x132_10x6.astc",   // kASTC_10x6_Format
     29     "mandrill_130x128_10x8.astc",   // kASTC_10x8_Format
     30     "mandrill_130x130_10x10.astc",  // kASTC_10x10_Format
     31     "mandrill_132x130_12x10.astc",  // kASTC_12x10_Format
     32     "mandrill_132x132_12x12.astc",  // kASTC_12x12_Format
     33 };
     34 
     35 static const int kNumASTCFilenames = SK_ARRAY_COUNT(kASTCFilenames);
     36 
     37 static inline const char *get_astc_filename(int idx) {
     38     if (idx < 0 || kNumASTCFilenames <= idx) {
     39         return "";
     40     }
     41 
     42     return kASTCFilenames[idx];
     43 }
     44 
     45 namespace skiagm {
     46 
     47 /**
     48  *  Test decoding an image from an ASTC file and then from compressed ASTC data.
     49  */
     50 class ASTCBitmapGM : public GM {
     51 public:
     52     ASTCBitmapGM() { }
     53     virtual ~ASTCBitmapGM() { }
     54 
     55 protected:
     56     SkString onShortName() override {
     57         return SkString("astcbitmap");
     58     }
     59 
     60     SkISize onISize() override {
     61         return SkISize::Make(kGMDimension, kGMDimension);
     62     }
     63 
     64     void onDraw(SkCanvas* canvas) override {
     65         for (int j = 0; j < 4; ++j) {
     66             for (int i = 0; i < 4; ++i) {
     67                 SkString filename = GetResourcePath(get_astc_filename(j*4+i));
     68                 if (filename == GetResourcePath("")) {
     69                     continue;
     70                 }
     71 
     72                 SkAutoTUnref<SkData> fileData(SkData::NewFromFileName(filename.c_str()));
     73                 if (NULL == fileData) {
     74                     SkDebugf("Could not open the file. Did you forget to set the resourcePath?\n");
     75                     return;
     76                 }
     77 
     78                 SkBitmap bm;
     79                 if (!SkInstallDiscardablePixelRef(fileData, &bm)) {
     80                     SkDebugf("Could not install discardable pixel ref.\n");
     81                     return;
     82                 }
     83 
     84                 const SkScalar bmX = static_cast<SkScalar>(i*kBitmapDimension);
     85                 const SkScalar bmY = static_cast<SkScalar>(j*kBitmapDimension);
     86                 canvas->drawBitmap(bm, bmX, bmY);
     87             }
     88         }
     89     }
     90 
     91 private:
     92     static const int kGMDimension = 600;
     93     static const int kBitmapDimension = kGMDimension/4;
     94 
     95     typedef GM INHERITED;
     96 };
     97 
     98 }  // namespace skiagm
     99 
    100 //////////////////////////////////////////////////////////////////////////////
    101 
    102 DEF_GM( return SkNEW(skiagm::ASTCBitmapGM); )
    103