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/*
* 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 "SkDiscardableMemory.h"
#include "SkScaledImageCache.h"
#include "Test.h"
static void make_bm(SkBitmap* bm, int w, int h) {
bm->allocN32Pixels(w, h);
}
static const int COUNT = 10;
static const int DIM = 256;
static void test_cache(skiatest::Reporter* reporter, SkScaledImageCache& cache,
bool testPurge) {
SkScaledImageCache::ID* id;
SkBitmap bm[COUNT];
const SkScalar scale = 2;
for (int i = 0; i < COUNT; ++i) {
make_bm(&bm[i], DIM, DIM);
}
for (int i = 0; i < COUNT; ++i) {
SkBitmap tmp;
SkScaledImageCache::ID* id = cache.findAndLock(bm[i], scale, scale, &tmp);
REPORTER_ASSERT(reporter, NULL == id);
make_bm(&tmp, DIM, DIM);
id = cache.addAndLock(bm[i], scale, scale, tmp);
REPORTER_ASSERT(reporter, NULL != id);
SkBitmap tmp2;
SkScaledImageCache::ID* id2 = cache.findAndLock(bm[i], scale, scale,
&tmp2);
REPORTER_ASSERT(reporter, id == id2);
REPORTER_ASSERT(reporter, tmp.pixelRef() == tmp2.pixelRef());
REPORTER_ASSERT(reporter, tmp.width() == tmp2.width());
REPORTER_ASSERT(reporter, tmp.height() == tmp2.height());
cache.unlock(id2);
cache.unlock(id);
}
if (testPurge) {
// stress test, should trigger purges
float incScale = 2;
for (size_t i = 0; i < COUNT * 100; ++i) {
incScale += 1;
SkBitmap tmp;
make_bm(&tmp, DIM, DIM);
SkScaledImageCache::ID* id = cache.addAndLock(bm[0], incScale,
incScale, tmp);
REPORTER_ASSERT(reporter, NULL != id);
cache.unlock(id);
}
}
// test the originals after all that purging
for (int i = 0; i < COUNT; ++i) {
SkBitmap tmp;
id = cache.findAndLock(bm[i], scale, scale, &tmp);
if (id) {
cache.unlock(id);
}
}
cache.setByteLimit(0);
}
#include "SkDiscardableMemoryPool.h"
static SkDiscardableMemoryPool* gPool;
static SkDiscardableMemory* pool_factory(size_t bytes) {
return gPool->create(bytes);
}
DEF_TEST(ImageCache, reporter) {
static const size_t defLimit = DIM * DIM * 4 * COUNT + 1024; // 1K slop
{
SkScaledImageCache cache(defLimit);
test_cache(reporter, cache, true);
}
{
SkDiscardableMemoryPool pool(defLimit);
gPool = &pool;
SkScaledImageCache cache(pool_factory);
test_cache(reporter, cache, true);
}
{
SkScaledImageCache cache(SkDiscardableMemory::Create);
test_cache(reporter, cache, false);
}
}
DEF_TEST(ImageCache_doubleAdd, r) {
// Adding the same key twice should be safe.
SkScaledImageCache cache(4096);
SkBitmap original;
original.allocN32Pixels(40, 40);
SkBitmap scaled1;
scaled1.allocN32Pixels(20, 20);
SkBitmap scaled2;
scaled2.allocN32Pixels(20, 20);
SkScaledImageCache::ID* id1 = cache.addAndLock(original, 0.5f, 0.5f, scaled1);
SkScaledImageCache::ID* id2 = cache.addAndLock(original, 0.5f, 0.5f, scaled2);
// We don't really care if id1 == id2 as long as unlocking both works.
cache.unlock(id1);
cache.unlock(id2);
SkBitmap tmp;
// Lookup should return the value that was added last.
SkScaledImageCache::ID* id = cache.findAndLock(original, 0.5f, 0.5f, &tmp);
REPORTER_ASSERT(r, NULL != id);
REPORTER_ASSERT(r, tmp.getGenerationID() == scaled2.getGenerationID());
cache.unlock(id);
}
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