a3264e53ee
This reverts commit eecaea4148805834f223681f70b6488ceba12d09. R=robertphillips@google.com, scroggo@google.com Author: reed@google.com Review URL: https://codereview.chromium.org/301283003 git-svn-id: http://skia.googlecode.com/svn/trunk@14989 2bbb7eff-a529-9590-31e7-b0007b416f81
729 lines
28 KiB
C++
729 lines
28 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "SkBitmap.h"
|
|
#include "SkCanvas.h"
|
|
#include "SkColor.h"
|
|
#include "SkColorPriv.h"
|
|
#include "SkData.h"
|
|
#include "SkDecodingImageGenerator.h"
|
|
#include "SkDiscardableMemoryPool.h"
|
|
#include "SkForceLinking.h"
|
|
#include "SkGradientShader.h"
|
|
#include "SkImageDecoder.h"
|
|
#include "SkImageEncoder.h"
|
|
#include "SkImageGeneratorPriv.h"
|
|
#include "SkImagePriv.h"
|
|
#include "SkOSFile.h"
|
|
#include "SkPoint.h"
|
|
#include "SkShader.h"
|
|
#include "SkStream.h"
|
|
#include "SkString.h"
|
|
#include "Test.h"
|
|
|
|
__SK_FORCE_IMAGE_DECODER_LINKING;
|
|
|
|
/**
|
|
* Interprets c as an unpremultiplied color, and returns the
|
|
* premultiplied equivalent.
|
|
*/
|
|
static SkPMColor premultiply_unpmcolor(SkPMColor c) {
|
|
U8CPU a = SkGetPackedA32(c);
|
|
U8CPU r = SkGetPackedR32(c);
|
|
U8CPU g = SkGetPackedG32(c);
|
|
U8CPU b = SkGetPackedB32(c);
|
|
return SkPreMultiplyARGB(a, r, g, b);
|
|
}
|
|
|
|
/**
|
|
* Return true if this stream format should be skipped, due
|
|
* to do being an opaque format or not a valid format.
|
|
*/
|
|
static bool skip_image_format(SkImageDecoder::Format format) {
|
|
switch (format) {
|
|
case SkImageDecoder::kPNG_Format:
|
|
case SkImageDecoder::kWEBP_Format:
|
|
return false;
|
|
// Skip unknown since it will not be decoded anyway.
|
|
case SkImageDecoder::kUnknown_Format:
|
|
// Technically ICO and BMP supports alpha channels, but our image
|
|
// decoders do not, so skip them as well.
|
|
case SkImageDecoder::kICO_Format:
|
|
case SkImageDecoder::kBMP_Format:
|
|
// The rest of these are opaque.
|
|
case SkImageDecoder::kPKM_Format:
|
|
case SkImageDecoder::kWBMP_Format:
|
|
case SkImageDecoder::kGIF_Format:
|
|
case SkImageDecoder::kJPEG_Format:
|
|
return true;
|
|
}
|
|
SkASSERT(false);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Test decoding an image in premultiplied mode and unpremultiplied mode and compare
|
|
* them.
|
|
*/
|
|
static void compare_unpremul(skiatest::Reporter* reporter, const SkString& filename) {
|
|
// Decode a resource:
|
|
SkBitmap bm8888;
|
|
SkBitmap bm8888Unpremul;
|
|
|
|
SkFILEStream stream(filename.c_str());
|
|
|
|
SkImageDecoder::Format format = SkImageDecoder::GetStreamFormat(&stream);
|
|
if (skip_image_format(format)) {
|
|
return;
|
|
}
|
|
|
|
SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream));
|
|
if (NULL == decoder.get()) {
|
|
SkDebugf("couldn't decode %s\n", filename.c_str());
|
|
return;
|
|
}
|
|
|
|
bool success = decoder->decode(&stream, &bm8888, SkBitmap::kARGB_8888_Config,
|
|
SkImageDecoder::kDecodePixels_Mode);
|
|
if (!success) {
|
|
return;
|
|
}
|
|
|
|
success = stream.rewind();
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
return;
|
|
}
|
|
|
|
decoder->setRequireUnpremultipliedColors(true);
|
|
success = decoder->decode(&stream, &bm8888Unpremul, SkBitmap::kARGB_8888_Config,
|
|
SkImageDecoder::kDecodePixels_Mode);
|
|
if (!success) {
|
|
return;
|
|
}
|
|
|
|
bool dimensionsMatch = bm8888.width() == bm8888Unpremul.width()
|
|
&& bm8888.height() == bm8888Unpremul.height();
|
|
REPORTER_ASSERT(reporter, dimensionsMatch);
|
|
if (!dimensionsMatch) {
|
|
return;
|
|
}
|
|
|
|
// Only do the comparison if the two bitmaps are both 8888.
|
|
if (bm8888.config() != SkBitmap::kARGB_8888_Config
|
|
|| bm8888Unpremul.config() != SkBitmap::kARGB_8888_Config) {
|
|
return;
|
|
}
|
|
|
|
// Now compare the two bitmaps.
|
|
for (int i = 0; i < bm8888.width(); ++i) {
|
|
for (int j = 0; j < bm8888.height(); ++j) {
|
|
// "c0" is the color of the premultiplied bitmap at (i, j).
|
|
const SkPMColor c0 = *bm8888.getAddr32(i, j);
|
|
// "c1" is the result of premultiplying the color of the unpremultiplied
|
|
// bitmap at (i, j).
|
|
const SkPMColor c1 = premultiply_unpmcolor(*bm8888Unpremul.getAddr32(i, j));
|
|
// Compute the difference for each component.
|
|
int da = SkAbs32(SkGetPackedA32(c0) - SkGetPackedA32(c1));
|
|
int dr = SkAbs32(SkGetPackedR32(c0) - SkGetPackedR32(c1));
|
|
int dg = SkAbs32(SkGetPackedG32(c0) - SkGetPackedG32(c1));
|
|
int db = SkAbs32(SkGetPackedB32(c0) - SkGetPackedB32(c1));
|
|
|
|
// Alpha component must be exactly the same.
|
|
REPORTER_ASSERT(reporter, 0 == da);
|
|
|
|
// Color components may not match exactly due to rounding error.
|
|
REPORTER_ASSERT(reporter, dr <= 1);
|
|
REPORTER_ASSERT(reporter, dg <= 1);
|
|
REPORTER_ASSERT(reporter, db <= 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void test_unpremul(skiatest::Reporter* reporter) {
|
|
// This test cannot run if there is no resource path.
|
|
SkString resourcePath = skiatest::Test::GetResourcePath();
|
|
if (resourcePath.isEmpty()) {
|
|
SkDebugf("Could not run unpremul test because resourcePath not specified.");
|
|
return;
|
|
}
|
|
SkOSFile::Iter iter(resourcePath.c_str());
|
|
SkString basename;
|
|
if (iter.next(&basename)) {
|
|
do {
|
|
SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str());
|
|
// SkDebugf("about to decode \"%s\"\n", filename.c_str());
|
|
compare_unpremul(reporter, filename);
|
|
} while (iter.next(&basename));
|
|
} else {
|
|
SkDebugf("Failed to find any files :(\n");
|
|
}
|
|
}
|
|
|
|
#if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
|
|
// Test that the alpha type is what we expect.
|
|
static void test_alphaType(skiatest::Reporter* reporter, const SkString& filename,
|
|
bool requireUnpremul) {
|
|
SkBitmap bm;
|
|
SkFILEStream stream(filename.c_str());
|
|
|
|
SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream));
|
|
if (NULL == decoder.get()) {
|
|
return;
|
|
}
|
|
|
|
decoder->setRequireUnpremultipliedColors(requireUnpremul);
|
|
|
|
// Decode just the bounds. This should always succeed.
|
|
bool success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config,
|
|
SkImageDecoder::kDecodeBounds_Mode);
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
return;
|
|
}
|
|
|
|
// Keep track of the alpha type for testing later. If the full decode
|
|
// succeeds, the alpha type should be the same, unless the full decode
|
|
// determined that the alpha type should actually be opaque, which may
|
|
// not be known when only decoding the bounds.
|
|
const SkAlphaType boundsAlphaType = bm.alphaType();
|
|
|
|
// rewind should always succeed on SkFILEStream.
|
|
success = stream.rewind();
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
return;
|
|
}
|
|
|
|
success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config,
|
|
SkImageDecoder::kDecodePixels_Mode);
|
|
|
|
if (!success) {
|
|
// When the decoder is set to require unpremul, if it does not support
|
|
// unpremul it will fail. This is the only reason the decode should
|
|
// fail (since we know the files we are using to test can be decoded).
|
|
REPORTER_ASSERT(reporter, requireUnpremul);
|
|
return;
|
|
}
|
|
|
|
// The bounds decode should return with either the requested
|
|
// premul/unpremul or opaque, if that value could be determined when only
|
|
// decoding the bounds.
|
|
if (requireUnpremul) {
|
|
REPORTER_ASSERT(reporter, kUnpremul_SkAlphaType == boundsAlphaType
|
|
|| kOpaque_SkAlphaType == boundsAlphaType);
|
|
} else {
|
|
REPORTER_ASSERT(reporter, kPremul_SkAlphaType == boundsAlphaType
|
|
|| kOpaque_SkAlphaType == boundsAlphaType);
|
|
}
|
|
|
|
// When decoding the full image, the alpha type should match the one
|
|
// returned by the bounds decode, unless the full decode determined that
|
|
// the alpha type is actually opaque.
|
|
REPORTER_ASSERT(reporter, bm.alphaType() == boundsAlphaType
|
|
|| bm.alphaType() == kOpaque_SkAlphaType);
|
|
}
|
|
|
|
DEF_TEST(ImageDecoding_alphaType, reporter) {
|
|
SkString resourcePath = skiatest::Test::GetResourcePath();
|
|
if (resourcePath.isEmpty()) {
|
|
SkDebugf("Could not run alphaType test because resourcePath not specified.");
|
|
return;
|
|
}
|
|
|
|
SkOSFile::Iter iter(resourcePath.c_str());
|
|
SkString basename;
|
|
if (iter.next(&basename)) {
|
|
do {
|
|
SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str());
|
|
for (int truth = 0; truth <= 1; ++truth) {
|
|
test_alphaType(reporter, filename, SkToBool(truth));
|
|
}
|
|
} while (iter.next(&basename));
|
|
} else {
|
|
SkDebugf("Failed to find any files :(\n");
|
|
}
|
|
|
|
}
|
|
|
|
// Using known images, test that decoding into unpremul and premul behave as expected.
|
|
DEF_TEST(ImageDecoding_unpremul, reporter) {
|
|
SkString resourcePath = skiatest::Test::GetResourcePath();
|
|
if (resourcePath.isEmpty()) {
|
|
SkDebugf("Could not run unpremul test because resourcePath not specified.");
|
|
return;
|
|
}
|
|
const char* root = "half-transparent-white-pixel";
|
|
const char* suffixes[] = { ".png", ".webp" };
|
|
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(suffixes); ++i) {
|
|
SkString basename = SkStringPrintf("%s%s", root, suffixes[i]);
|
|
SkString fullName = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str());
|
|
|
|
SkBitmap bm;
|
|
SkFILEStream stream(fullName.c_str());
|
|
|
|
if (!stream.isValid()) {
|
|
SkDebugf("file %s missing from resource directoy %s\n",
|
|
basename.c_str(), resourcePath.c_str());
|
|
continue;
|
|
}
|
|
|
|
// This should never fail since we know the images we're decoding.
|
|
SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream));
|
|
REPORTER_ASSERT(reporter, NULL != decoder.get());
|
|
if (NULL == decoder.get()) {
|
|
continue;
|
|
}
|
|
|
|
// Test unpremultiplied. We know what color this should result in.
|
|
decoder->setRequireUnpremultipliedColors(true);
|
|
bool success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config,
|
|
SkImageDecoder::kDecodePixels_Mode);
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
continue;
|
|
}
|
|
|
|
REPORTER_ASSERT(reporter, bm.width() == 1 && bm.height() == 1);
|
|
{
|
|
SkAutoLockPixels alp(bm);
|
|
REPORTER_ASSERT(reporter, bm.getAddr32(0, 0)[0] == 0x7fffffff);
|
|
}
|
|
|
|
success = stream.rewind();
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
continue;
|
|
}
|
|
|
|
// Test premultiplied. Once again, we know which color this should
|
|
// result in.
|
|
decoder->setRequireUnpremultipliedColors(false);
|
|
success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config,
|
|
SkImageDecoder::kDecodePixels_Mode);
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
continue;
|
|
}
|
|
|
|
REPORTER_ASSERT(reporter, bm.width() == 1 && bm.height() == 1);
|
|
{
|
|
SkAutoLockPixels alp(bm);
|
|
REPORTER_ASSERT(reporter, bm.getAddr32(0, 0)[0] == 0x7f7f7f7f);
|
|
}
|
|
}
|
|
}
|
|
#endif // SK_BUILD_FOR_UNIX/ANDROID skbug.com/2388
|
|
|
|
#ifdef SK_DEBUG
|
|
// Create a stream containing a bitmap encoded to Type type.
|
|
static SkMemoryStream* create_image_stream(SkImageEncoder::Type type) {
|
|
SkBitmap bm;
|
|
const int size = 50;
|
|
bm.allocN32Pixels(size, size);
|
|
SkCanvas canvas(bm);
|
|
SkPoint points[2] = {
|
|
{ SkIntToScalar(0), SkIntToScalar(0) },
|
|
{ SkIntToScalar(size), SkIntToScalar(size) }
|
|
};
|
|
SkColor colors[2] = { SK_ColorWHITE, SK_ColorBLUE };
|
|
SkShader* shader = SkGradientShader::CreateLinear(points, colors, NULL,
|
|
SK_ARRAY_COUNT(colors),
|
|
SkShader::kClamp_TileMode);
|
|
SkPaint paint;
|
|
paint.setShader(shader)->unref();
|
|
canvas.drawPaint(paint);
|
|
// Now encode it to a stream.
|
|
SkAutoTUnref<SkData> data(SkImageEncoder::EncodeData(bm, type, 100));
|
|
if (NULL == data.get()) {
|
|
return NULL;
|
|
}
|
|
return SkNEW_ARGS(SkMemoryStream, (data.get()));
|
|
}
|
|
|
|
// For every format that supports tile based decoding, ensure that
|
|
// calling decodeSubset will not fail if the caller has unreffed the
|
|
// stream provided in buildTileIndex.
|
|
// Only runs in debug mode since we are testing for a crash.
|
|
static void test_stream_life() {
|
|
const SkImageEncoder::Type gTypes[] = {
|
|
#ifdef SK_BUILD_FOR_ANDROID
|
|
SkImageEncoder::kJPEG_Type,
|
|
SkImageEncoder::kPNG_Type,
|
|
#endif
|
|
SkImageEncoder::kWEBP_Type,
|
|
};
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(gTypes); ++i) {
|
|
// SkDebugf("encoding to %i\n", i);
|
|
SkAutoTUnref<SkMemoryStream> stream(create_image_stream(gTypes[i]));
|
|
if (NULL == stream.get()) {
|
|
SkDebugf("no stream\n");
|
|
continue;
|
|
}
|
|
SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream));
|
|
if (NULL == decoder.get()) {
|
|
SkDebugf("no decoder\n");
|
|
continue;
|
|
}
|
|
int width, height;
|
|
if (!decoder->buildTileIndex(stream.get(), &width, &height)) {
|
|
SkDebugf("could not build a tile index\n");
|
|
continue;
|
|
}
|
|
// Now unref the stream to make sure it survives
|
|
stream.reset(NULL);
|
|
SkBitmap bm;
|
|
decoder->decodeSubset(&bm, SkIRect::MakeWH(width, height),
|
|
SkBitmap::kARGB_8888_Config);
|
|
}
|
|
}
|
|
|
|
// Test inside SkScaledBitmapSampler.cpp
|
|
extern void test_row_proc_choice();
|
|
|
|
#endif // SK_DEBUG
|
|
|
|
DEF_TEST(ImageDecoding, reporter) {
|
|
test_unpremul(reporter);
|
|
#ifdef SK_DEBUG
|
|
test_stream_life();
|
|
test_row_proc_choice();
|
|
#endif
|
|
}
|
|
|
|
// expected output for 8x8 bitmap
|
|
static const int kExpectedWidth = 8;
|
|
static const int kExpectedHeight = 8;
|
|
static const SkColor kExpectedPixels[] = {
|
|
0xffbba570, 0xff395f5d, 0xffe25c39, 0xff197666,
|
|
0xff3cba27, 0xffdefcb0, 0xffc13874, 0xfffa0093,
|
|
0xffbda60e, 0xffc01db6, 0xff2bd688, 0xff9362d4,
|
|
0xffc641b2, 0xffa5cede, 0xff606eba, 0xff8f4bf3,
|
|
0xff3bf742, 0xff8f02a8, 0xff5509df, 0xffc7027e,
|
|
0xff24aa8a, 0xff886c96, 0xff625481, 0xff403689,
|
|
0xffc52152, 0xff78ccd6, 0xffdcb4ab, 0xff09d27d,
|
|
0xffca00f3, 0xff605d47, 0xff446fb2, 0xff576e46,
|
|
0xff273df9, 0xffb41a83, 0xfff812c3, 0xffccab67,
|
|
0xff034218, 0xff7db9a7, 0xff821048, 0xfffe4ab4,
|
|
0xff6fac98, 0xff941d27, 0xff5fe411, 0xfffbb283,
|
|
0xffd86e99, 0xff169162, 0xff71128c, 0xff39cab4,
|
|
0xffa7fe63, 0xff4c956b, 0xffbc22e0, 0xffb272e4,
|
|
0xff129f4a, 0xffe34513, 0xff3d3742, 0xffbd190a,
|
|
0xffb07222, 0xff2e23f8, 0xfff089d9, 0xffb35738,
|
|
0xffa86022, 0xff3340fe, 0xff95fe71, 0xff6a71df
|
|
};
|
|
SK_COMPILE_ASSERT((kExpectedWidth * kExpectedHeight)
|
|
== SK_ARRAY_COUNT(kExpectedPixels), array_size_mismatch);
|
|
|
|
DEF_TEST(WebP, reporter) {
|
|
const unsigned char encodedWebP[] = {
|
|
0x52, 0x49, 0x46, 0x46, 0x2c, 0x01, 0x00, 0x00, 0x57, 0x45, 0x42, 0x50,
|
|
0x56, 0x50, 0x38, 0x4c, 0x20, 0x01, 0x00, 0x00, 0x2f, 0x07, 0xc0, 0x01,
|
|
0x00, 0xff, 0x01, 0x45, 0x03, 0x00, 0xe2, 0xd5, 0xae, 0x60, 0x2b, 0xad,
|
|
0xd9, 0x68, 0x76, 0xb6, 0x8d, 0x6a, 0x1d, 0xc0, 0xe6, 0x19, 0xd6, 0x16,
|
|
0xb7, 0xb4, 0xef, 0xcf, 0xc3, 0x15, 0x6c, 0xb3, 0xbd, 0x77, 0x0d, 0x85,
|
|
0x6d, 0x1b, 0xa9, 0xb1, 0x2b, 0xdc, 0x3d, 0x83, 0xdb, 0x00, 0x00, 0xc8,
|
|
0x26, 0xe5, 0x01, 0x99, 0x8a, 0xd5, 0xdd, 0xfc, 0x82, 0xcd, 0xcd, 0x9a,
|
|
0x8c, 0x13, 0xcc, 0x1b, 0xba, 0xf5, 0x05, 0xdb, 0xee, 0x6a, 0xdb, 0x38,
|
|
0x60, 0xfe, 0x43, 0x2c, 0xd4, 0x6a, 0x99, 0x4d, 0xc6, 0xc0, 0xd3, 0x28,
|
|
0x1b, 0xc1, 0xb1, 0x17, 0x4e, 0x43, 0x0e, 0x3d, 0x27, 0xe9, 0xe4, 0x84,
|
|
0x4f, 0x24, 0x62, 0x69, 0x85, 0x43, 0x8d, 0xc2, 0x04, 0x00, 0x07, 0x59,
|
|
0x60, 0xfd, 0x8b, 0x4d, 0x60, 0x32, 0x72, 0xcf, 0x88, 0x0c, 0x2f, 0x2f,
|
|
0xad, 0x62, 0xbd, 0x27, 0x09, 0x16, 0x70, 0x78, 0x6c, 0xd9, 0x82, 0xef,
|
|
0x1a, 0xa2, 0xcc, 0xf0, 0xf1, 0x6f, 0xd8, 0x78, 0x2e, 0x39, 0xa1, 0xcf,
|
|
0x14, 0x4b, 0x89, 0xb4, 0x1b, 0x48, 0x15, 0x7c, 0x48, 0x6f, 0x8c, 0x20,
|
|
0xb7, 0x00, 0xcf, 0xfc, 0xdb, 0xd0, 0xe9, 0xe7, 0x42, 0x09, 0xa4, 0x03,
|
|
0x40, 0xac, 0xda, 0x40, 0x01, 0x00, 0x5f, 0xa1, 0x3d, 0x64, 0xe1, 0xf4,
|
|
0x03, 0x45, 0x29, 0xe0, 0xe2, 0x4a, 0xc3, 0xa2, 0xe8, 0xe0, 0x25, 0x12,
|
|
0x74, 0xc6, 0xe8, 0xfb, 0x93, 0x4f, 0x9f, 0x5e, 0xc0, 0xa6, 0x91, 0x1b,
|
|
0xa4, 0x24, 0x82, 0xc3, 0x61, 0x07, 0x4c, 0x49, 0x4f, 0x53, 0xae, 0x5f,
|
|
0x5d, 0x39, 0x36, 0xc0, 0x5b, 0x57, 0x54, 0x60, 0x10, 0x00, 0x00, 0xd1,
|
|
0x68, 0xb6, 0x6d, 0xdb, 0x36, 0x22, 0xfa, 0x1f, 0x35, 0x75, 0x22, 0xec,
|
|
0x31, 0xbc, 0x5d, 0x8f, 0x87, 0x53, 0xa2, 0x05, 0x8c, 0x2f, 0xcd, 0xa8,
|
|
0xa7, 0xf3, 0xa3, 0xbd, 0x83, 0x8b, 0x2a, 0xc8, 0x58, 0xf5, 0xac, 0x80,
|
|
0xe3, 0xfe, 0x66, 0xa4, 0x7c, 0x1b, 0x6c, 0xd1, 0xa9, 0xd8, 0x14, 0xd0,
|
|
0xc5, 0xb5, 0x39, 0x71, 0x97, 0x19, 0x19, 0x1b
|
|
};
|
|
SkAutoDataUnref encoded(SkData::NewWithCopy(encodedWebP,
|
|
sizeof(encodedWebP)));
|
|
SkBitmap bm;
|
|
|
|
bool success = SkInstallDiscardablePixelRef(
|
|
SkDecodingImageGenerator::Create(encoded,
|
|
SkDecodingImageGenerator::Options()), &bm);
|
|
|
|
REPORTER_ASSERT(reporter, success);
|
|
if (!success) {
|
|
return;
|
|
}
|
|
SkAutoLockPixels alp(bm);
|
|
|
|
bool rightSize = ((kExpectedWidth == bm.width())
|
|
&& (kExpectedHeight == bm.height()));
|
|
REPORTER_ASSERT(reporter, rightSize);
|
|
if (rightSize) {
|
|
bool error = false;
|
|
const SkColor* correctPixel = kExpectedPixels;
|
|
for (int y = 0; y < bm.height(); ++y) {
|
|
for (int x = 0; x < bm.width(); ++x) {
|
|
error |= (*correctPixel != bm.getColor(x, y));
|
|
++correctPixel;
|
|
}
|
|
}
|
|
REPORTER_ASSERT(reporter, !error);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// example of how Android will do this inside their BitmapFactory
|
|
static SkPixelRef* install_pixel_ref(SkBitmap* bitmap,
|
|
SkStreamRewindable* stream,
|
|
int sampleSize, bool ditherImage) {
|
|
SkASSERT(bitmap != NULL);
|
|
SkASSERT(stream != NULL);
|
|
SkASSERT(stream->rewind());
|
|
SkASSERT(stream->unique());
|
|
SkColorType colorType = bitmap->colorType();
|
|
SkDecodingImageGenerator::Options opts(sampleSize, ditherImage, colorType);
|
|
if (SkInstallDiscardablePixelRef(
|
|
SkDecodingImageGenerator::Create(stream, opts), bitmap)) {
|
|
return bitmap->pixelRef();
|
|
}
|
|
return NULL;
|
|
}
|
|
/**
|
|
* A test for the SkDecodingImageGenerator::Create and
|
|
* SkInstallDiscardablePixelRef functions.
|
|
*/
|
|
DEF_TEST(ImprovedBitmapFactory, reporter) {
|
|
SkString resourcePath = skiatest::Test::GetResourcePath();
|
|
SkString path = SkOSPath::SkPathJoin(
|
|
resourcePath.c_str(), "randPixels.png");
|
|
SkAutoTUnref<SkStreamRewindable> stream(
|
|
SkStream::NewFromFile(path.c_str()));
|
|
if (sk_exists(path.c_str())) {
|
|
SkBitmap bm;
|
|
SkAssertResult(bm.setInfo(SkImageInfo::MakeN32Premul(1, 1)));
|
|
REPORTER_ASSERT(reporter,
|
|
NULL != install_pixel_ref(&bm, stream.detach(), 1, true));
|
|
SkAutoLockPixels alp(bm);
|
|
REPORTER_ASSERT(reporter, NULL != bm.getPixels());
|
|
}
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
|
|
static inline bool check_rounding(int value, int dividend, int divisor) {
|
|
// returns true if the value is greater than floor(dividend/divisor)
|
|
// and less than SkNextPow2(ceil(dividend - divisor))
|
|
return (((divisor * value) > (dividend - divisor))
|
|
&& value <= SkNextPow2(((dividend - 1) / divisor) + 1));
|
|
}
|
|
#endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX
|
|
|
|
|
|
#if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
|
|
#define kBackwards_SkColorType kRGBA_8888_SkColorType
|
|
#elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A)
|
|
#define kBackwards_SkColorType kBGRA_8888_SkColorType
|
|
#else
|
|
#error "SK_*32_SHFIT values must correspond to BGRA or RGBA byte order"
|
|
#endif
|
|
|
|
static inline const char* SkColorType_to_string(SkColorType colorType) {
|
|
switch(colorType) {
|
|
case kAlpha_8_SkColorType: return "Alpha_8";
|
|
case kRGB_565_SkColorType: return "RGB_565";
|
|
case kARGB_4444_SkColorType: return "ARGB_4444";
|
|
case kN32_SkColorType: return "N32";
|
|
case kBackwards_SkColorType: return "Backwards";
|
|
case kIndex_8_SkColorType: return "Index_8";
|
|
default: return "ERROR";
|
|
}
|
|
}
|
|
|
|
static inline const char* options_colorType(
|
|
const SkDecodingImageGenerator::Options& opts) {
|
|
if (opts.fUseRequestedColorType) {
|
|
return SkColorType_to_string(opts.fRequestedColorType);
|
|
} else {
|
|
return "(none)";
|
|
}
|
|
}
|
|
|
|
static inline const char* yn(bool value) {
|
|
if (value) {
|
|
return "yes";
|
|
} else {
|
|
return "no";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Given either a SkStream or a SkData, try to decode the encoded
|
|
* image using the specified options and report errors.
|
|
*/
|
|
static void test_options(skiatest::Reporter* reporter,
|
|
const SkDecodingImageGenerator::Options& opts,
|
|
SkStreamRewindable* encodedStream,
|
|
SkData* encodedData,
|
|
bool useData,
|
|
const SkString& path) {
|
|
SkBitmap bm;
|
|
bool success = false;
|
|
if (useData) {
|
|
if (NULL == encodedData) {
|
|
return;
|
|
}
|
|
success = SkInstallDiscardablePixelRef(
|
|
SkDecodingImageGenerator::Create(encodedData, opts), &bm);
|
|
} else {
|
|
if (NULL == encodedStream) {
|
|
return;
|
|
}
|
|
success = SkInstallDiscardablePixelRef(
|
|
SkDecodingImageGenerator::Create(encodedStream->duplicate(), opts), &bm);
|
|
}
|
|
if (!success) {
|
|
if (opts.fUseRequestedColorType
|
|
&& (kARGB_4444_SkColorType == opts.fRequestedColorType)) {
|
|
return; // Ignore known conversion inabilities.
|
|
}
|
|
// If we get here, it's a failure and we will need more
|
|
// information about why it failed.
|
|
ERRORF(reporter, "Bounds decode failed [sampleSize=%d dither=%s "
|
|
"colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage),
|
|
options_colorType(opts), path.c_str());
|
|
return;
|
|
}
|
|
#if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
|
|
// Android is the only system that use Skia's image decoders in
|
|
// production. For now, we'll only verify that samplesize works
|
|
// on systems where it already is known to work.
|
|
REPORTER_ASSERT(reporter, check_rounding(bm.height(), kExpectedHeight,
|
|
opts.fSampleSize));
|
|
REPORTER_ASSERT(reporter, check_rounding(bm.width(), kExpectedWidth,
|
|
opts.fSampleSize));
|
|
// The ImageDecoder API doesn't guarantee that SampleSize does
|
|
// anything at all, but the decoders that this test excercises all
|
|
// produce an output size in the following range:
|
|
// (((sample_size * out_size) > (in_size - sample_size))
|
|
// && out_size <= SkNextPow2(((in_size - 1) / sample_size) + 1));
|
|
#endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX
|
|
SkAutoLockPixels alp(bm);
|
|
if (bm.getPixels() == NULL) {
|
|
ERRORF(reporter, "Pixel decode failed [sampleSize=%d dither=%s "
|
|
"colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage),
|
|
options_colorType(opts), path.c_str());
|
|
return;
|
|
}
|
|
|
|
SkBitmap::Config requestedConfig
|
|
= SkColorTypeToBitmapConfig(opts.fRequestedColorType);
|
|
REPORTER_ASSERT(reporter,
|
|
(!opts.fUseRequestedColorType)
|
|
|| (bm.config() == requestedConfig));
|
|
|
|
// Condition under which we should check the decoding results:
|
|
if ((SkBitmap::kARGB_8888_Config == bm.config())
|
|
&& (!path.endsWith(".jpg")) // lossy
|
|
&& (opts.fSampleSize == 1)) { // scaled
|
|
const SkColor* correctPixels = kExpectedPixels;
|
|
SkASSERT(bm.height() == kExpectedHeight);
|
|
SkASSERT(bm.width() == kExpectedWidth);
|
|
int pixelErrors = 0;
|
|
for (int y = 0; y < bm.height(); ++y) {
|
|
for (int x = 0; x < bm.width(); ++x) {
|
|
if (*correctPixels != bm.getColor(x, y)) {
|
|
++pixelErrors;
|
|
}
|
|
++correctPixels;
|
|
}
|
|
}
|
|
if (pixelErrors != 0) {
|
|
ERRORF(reporter, "Pixel-level mismatch (%d of %d) "
|
|
"[sampleSize=%d dither=%s colorType=%s %s]",
|
|
pixelErrors, kExpectedHeight * kExpectedWidth,
|
|
opts.fSampleSize, yn(opts.fDitherImage),
|
|
options_colorType(opts), path.c_str());
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* SkDecodingImageGenerator has an Options struct which lets the
|
|
* client of the generator set sample size, dithering, and bitmap
|
|
* config. This test loops through many possible options and tries
|
|
* them on a set of 5 small encoded images (each in a different
|
|
* format). We test both SkData and SkStreamRewindable decoding.
|
|
*/
|
|
DEF_TEST(ImageDecoderOptions, reporter) {
|
|
const char* files[] = {
|
|
"randPixels.bmp",
|
|
"randPixels.jpg",
|
|
"randPixels.png",
|
|
"randPixels.webp",
|
|
#if !defined(SK_BUILD_FOR_WIN)
|
|
// TODO(halcanary): Find out why this fails sometimes.
|
|
"randPixels.gif",
|
|
#endif
|
|
};
|
|
|
|
SkString resourceDir = skiatest::Test::GetResourcePath();
|
|
if (!sk_exists(resourceDir.c_str())) {
|
|
return;
|
|
}
|
|
|
|
int scaleList[] = {1, 2, 3, 4};
|
|
bool ditherList[] = {true, false};
|
|
SkColorType colorList[] = {
|
|
kAlpha_8_SkColorType,
|
|
kRGB_565_SkColorType,
|
|
kARGB_4444_SkColorType, // Most decoders will fail on 4444.
|
|
kN32_SkColorType
|
|
// Note that indexed color is left out of the list. Lazy
|
|
// decoding doesn't do indexed color.
|
|
};
|
|
const bool useDataList[] = {true, false};
|
|
|
|
for (size_t fidx = 0; fidx < SK_ARRAY_COUNT(files); ++fidx) {
|
|
SkString path = SkOSPath::SkPathJoin(resourceDir.c_str(), files[fidx]);
|
|
if (!sk_exists(path.c_str())) {
|
|
continue;
|
|
}
|
|
|
|
SkAutoDataUnref encodedData(SkData::NewFromFileName(path.c_str()));
|
|
REPORTER_ASSERT(reporter, encodedData.get() != NULL);
|
|
SkAutoTUnref<SkStreamRewindable> encodedStream(
|
|
SkStream::NewFromFile(path.c_str()));
|
|
REPORTER_ASSERT(reporter, encodedStream.get() != NULL);
|
|
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(scaleList); ++i) {
|
|
for (size_t j = 0; j < SK_ARRAY_COUNT(ditherList); ++j) {
|
|
for (size_t m = 0; m < SK_ARRAY_COUNT(useDataList); ++m) {
|
|
for (size_t k = 0; k < SK_ARRAY_COUNT(colorList); ++k) {
|
|
SkDecodingImageGenerator::Options opts(scaleList[i],
|
|
ditherList[j],
|
|
colorList[k]);
|
|
test_options(reporter, opts, encodedStream, encodedData,
|
|
useDataList[m], path);
|
|
|
|
}
|
|
SkDecodingImageGenerator::Options options(scaleList[i],
|
|
ditherList[j]);
|
|
test_options(reporter, options, encodedStream, encodedData,
|
|
useDataList[m], path);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|