gm/astcbitmap.cpp

   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() SK_OVERRIDE {
  57         return SkString("astcbitmap");
  58     }
  59
  60     SkISize onISize() SK_OVERRIDE {
  61         return SkISize::Make(kGMDimension, kGMDimension);
  62     }
  63
  64     void onDraw(SkCanvas* canvas) SK_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); )