ARGB image encoder for checksums.
https://codereview.chromium.org/14267031/
git-svn-id: http://skia.googlecode.com/svn/trunk@8831 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/ARGBImageEncoderTest.cpp b/tests/ARGBImageEncoderTest.cpp
new file mode 100644
index 0000000..05ad58c
--- /dev/null
+++ b/tests/ARGBImageEncoderTest.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/** Tests for ARGBImageEncoder. */
+
+#include "Test.h"
+#include "SkBitmap.h"
+#include "SkCanvas.h"
+#include "SkImageEncoder.h"
+#include "SkStream.h"
+
+namespace skiatest {
+
+class BitmapTransformerTestClass : public Test {
+public:
+ static Test* Factory(void*) { return SkNEW(BitmapTransformerTestClass); }
+protected:
+ virtual void onGetName(SkString* name) SK_OVERRIDE { name->set("ARGBImageEncoder"); }
+ virtual void onRun(Reporter* reporter) SK_OVERRIDE;
+};
+
+static SkBitmap::Config configs[] = {
+ SkBitmap::kRGB_565_Config,
+ SkBitmap::kARGB_4444_Config,
+ SkBitmap::kARGB_8888_Config,
+};
+
+void BitmapTransformerTestClass::onRun(Reporter* reporter) {
+ // Bytes we expect to get:
+ const int kWidth = 3;
+ const int kHeight = 5;
+ const unsigned char comparisonBuffer[] = {
+ // kHeight rows, each with kWidth pixels, premultiplied ARGB for each pixel
+ 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, // red
+ 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, // green
+ 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue
+ 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue
+ 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue
+ };
+
+ SkAutoTDelete<SkImageEncoder> enc(CreateARGBImageEncoder());
+ for (size_t configIndex = 0; configIndex < SK_ARRAY_COUNT(configs); ++configIndex) {
+ // A bitmap that should generate the above bytes:
+ SkBitmap bitmap;
+ {
+ bitmap.setConfig(configs[configIndex], kWidth, kHeight);
+ REPORTER_ASSERT(reporter, bitmap.allocPixels());
+ bitmap.setIsOpaque(true);
+ bitmap.eraseColor(SK_ColorBLUE);
+ // Change rows [0,1] from blue to [red,green].
+ SkCanvas canvas(bitmap);
+ SkPaint paint;
+ paint.setColor(SK_ColorRED);
+ canvas.drawIRect(SkIRect::MakeLTRB(0, 0, kWidth, 1), paint);
+ paint.setColor(SK_ColorGREEN);
+ canvas.drawIRect(SkIRect::MakeLTRB(0, 1, kWidth, 2), paint);
+ }
+
+ // Transform the bitmap.
+ int bufferSize = bitmap.width() * bitmap.height() * 4;
+ SkAutoMalloc pixelBufferManager(bufferSize);
+ char *pixelBuffer = static_cast<char *>(pixelBufferManager.get());
+ SkMemoryWStream out(pixelBuffer, bufferSize);
+ REPORTER_ASSERT(reporter, enc->encodeStream(&out, bitmap, SkImageEncoder::kDefaultQuality));
+
+ // Confirm we got the expected results.
+ REPORTER_ASSERT(reporter, bufferSize == sizeof(comparisonBuffer));
+ REPORTER_ASSERT(reporter, memcmp(pixelBuffer, comparisonBuffer, bufferSize) == 0);
+ }
+}
+
+static TestRegistry gReg(BitmapTransformerTestClass::Factory);
+
+}