- Add astcbitmap to gm slides

gm/astcbitmap.cpp

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+
+#include "Resources.h"
+#include "SkCanvas.h"
+#include "SkData.h"
+#include "SkDecodingImageGenerator.h"
+#include "SkImageDecoder.h"
+#include "SkOSFile.h"
+#include "SkTextureCompressor.h"
+
+static const char *kASTCFilenames[] = {
+    "mandrill_128x128_4x4.astc",    // kASTC_4x4_Format
+    "mandrill_130x128_5x4.astc",    // kASTC_5x4_Format
+    "mandrill_130x130_5x5.astc",    // kASTC_5x5_Format
+    "mandrill_132x130_6x5.astc",    // kASTC_6x5_Format
+    "mandrill_132x132_6x6.astc",    // kASTC_6x6_Format
+    "mandrill_128x130_8x5.astc",    // kASTC_8x5_Format
+    "mandrill_128x132_8x6.astc",    // kASTC_8x6_Format
+    "mandrill_128x128_8x8.astc",    // kASTC_8x8_Format
+    "mandrill_130x130_10x5.astc",   // kASTC_10x5_Format
+    "mandrill_130x132_10x6.astc",   // kASTC_10x6_Format
+    "mandrill_130x128_10x8.astc",   // kASTC_10x8_Format
+    "mandrill_130x130_10x10.astc",  // kASTC_10x10_Format
+    "mandrill_132x130_12x10.astc",  // kASTC_12x10_Format
+    "mandrill_132x132_12x12.astc",  // kASTC_12x12_Format
+};
+
+static const int kNumASTCFilenames = SK_ARRAY_COUNT(kASTCFilenames);
+
+static inline const char *get_astc_filename(int idx) {
+    if (idx < 0 || kNumASTCFilenames <= idx) {
+        return "";
+    }
+
+    return kASTCFilenames[idx];
+}
+
+namespace skiagm {
+
+/**
+ *  Test decoding an image from an ASTC file and then from compressed ASTC data.
+ */
+class ASTCBitmapGM : public GM {
+public:
+    ASTCBitmapGM() { }
+    virtual ~ASTCBitmapGM() { }
+
+protected:
+    virtual SkString onShortName() SK_OVERRIDE {
+        return SkString("astcbitmap");
+    }
+
+    virtual SkISize onISize() SK_OVERRIDE {
+        return SkISize::Make(kGMDimension, kGMDimension);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        for (int j = 0; j < 4; ++j) {
+            for (int i = 0; i < 4; ++i) {
+                SkString filename = GetResourcePath(get_astc_filename(j*4+i));
+                if (filename == GetResourcePath("")) {
+                    continue;
+                }
+
+                SkAutoTUnref<SkData> fileData(SkData::NewFromFileName(filename.c_str()));
+                if (NULL == fileData) {
+                    SkDebugf("Could not open the file. Did you forget to set the resourcePath?\n");
+                    return;
+                }
+
+                SkBitmap bm;
+                if (!SkInstallDiscardablePixelRef(
+                        SkDecodingImageGenerator::Create(
+                            fileData, SkDecodingImageGenerator::Options()), &bm)) {
+                    SkDebugf("Could not install discardable pixel ref.\n");
+                    return;
+                }
+
+                const SkScalar bmX = static_cast<SkScalar>(i*kBitmapDimension);
+                const SkScalar bmY = static_cast<SkScalar>(j*kBitmapDimension);
+                canvas->drawBitmap(bm, bmX, bmY);
+            }
+        }
+    }
+
+private:
+    static const int kGMDimension = 600;
+    static const int kBitmapDimension = kGMDimension/4;
+
+    typedef GM INHERITED;
+};
+
+}  // namespace skiagm
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM( return SkNEW(skiagm::ASTCBitmapGM); )