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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkImageEncoder.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkStream.h"
#include "Test.h"
static SkColorType gColorTypes[] = {
kRGB_565_SkColorType,
kN32_SkColorType,
};
DEF_TEST(ARGBImageEncoder, 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 ctIndex = 0; ctIndex < SK_ARRAY_COUNT(gColorTypes); ++ctIndex) {
// A bitmap that should generate the above bytes:
SkBitmap bitmap;
{
bool success = bitmap.allocPixels(SkImageInfo::Make(kWidth, kHeight,
gColorTypes[ctIndex], kOpaque_SkAlphaType));
REPORTER_ASSERT(reporter, success);
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);
}
}
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