1 /*
2 * Copyright 2012 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 "SkImageEncoder.h"
9
10 #include "SkBitmap.h"
11 #include "SkCanvas.h"
12 #include "SkStream.h"
13 #include "Test.h"
14
15 static SkColorType gColorTypes[] = {
16 kRGB_565_SkColorType,
17 kN32_SkColorType,
18 };
19
DEF_TEST(ARGBImageEncoder,reporter)20 DEF_TEST(ARGBImageEncoder, reporter) {
21 // Bytes we expect to get:
22 const int kWidth = 3;
23 const int kHeight = 5;
24 const unsigned char comparisonBuffer[] = {
25 // kHeight rows, each with kWidth pixels, premultiplied ARGB for each pixel
26 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, // red
27 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, // green
28 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue
29 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue
30 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue
31 };
32
33 SkAutoTDelete<SkImageEncoder> enc(CreateARGBImageEncoder());
34 for (size_t ctIndex = 0; ctIndex < SK_ARRAY_COUNT(gColorTypes); ++ctIndex) {
35 // A bitmap that should generate the above bytes:
36 SkBitmap bitmap;
37 {
38 bool success = bitmap.allocPixels(SkImageInfo::Make(kWidth, kHeight,
39 gColorTypes[ctIndex], kOpaque_SkAlphaType));
40 REPORTER_ASSERT(reporter, success);
41 bitmap.eraseColor(SK_ColorBLUE);
42 // Change rows [0,1] from blue to [red,green].
43 SkCanvas canvas(bitmap);
44 SkPaint paint;
45 paint.setColor(SK_ColorRED);
46 canvas.drawIRect(SkIRect::MakeLTRB(0, 0, kWidth, 1), paint);
47 paint.setColor(SK_ColorGREEN);
48 canvas.drawIRect(SkIRect::MakeLTRB(0, 1, kWidth, 2), paint);
49 }
50
51 // Transform the bitmap.
52 int bufferSize = bitmap.width() * bitmap.height() * 4;
53 SkAutoMalloc pixelBufferManager(bufferSize);
54 char *pixelBuffer = static_cast<char *>(pixelBufferManager.get());
55 SkMemoryWStream out(pixelBuffer, bufferSize);
56 REPORTER_ASSERT(reporter, enc->encodeStream(&out, bitmap, SkImageEncoder::kDefaultQuality));
57
58 // Confirm we got the expected results.
59 REPORTER_ASSERT(reporter, bufferSize == sizeof(comparisonBuffer));
60 REPORTER_ASSERT(reporter, memcmp(pixelBuffer, comparisonBuffer, bufferSize) == 0);
61 }
62 }
63