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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "SkPackBits.h"
static const uint16_t gTest0[] = { 0, 0, 1, 1 };
static const uint16_t gTest1[] = { 1, 2, 3, 4, 5, 6 };
static const uint16_t gTest2[] = { 0, 0, 0, 1, 2, 3, 3, 3 };
static const uint16_t gTest3[] = { 0, 0, 0, 0, 0, 0, 1, 2, 3, 3, 3, 0, 0, 1 };
#include "SkRandom.h"
static SkRandom gRand;
static void rand_fill(uint16_t buffer[], int count) {
for (int i = 0; i < count; i++)
buffer[i] = (uint16_t)gRand.nextU();
}
static void test_pack16(skiatest::Reporter* reporter) {
static const struct {
const uint16_t* fSrc;
int fCount;
} gTests[] = {
{ gTest0, SK_ARRAY_COUNT(gTest0) },
{ gTest1, SK_ARRAY_COUNT(gTest1) },
{ gTest2, SK_ARRAY_COUNT(gTest2) },
{ gTest3, SK_ARRAY_COUNT(gTest3) }
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); i++) {
uint8_t dst[100];
size_t dstSize = SkPackBits::Pack16(gTests[i].fSrc,
gTests[i].fCount, dst);
uint16_t src[100];
int srcCount = SkPackBits::Unpack16(dst, dstSize, src);
bool match = gTests[i].fCount == srcCount && memcmp(gTests[i].fSrc, src,
gTests[i].fCount * sizeof(uint16_t)) == 0;
REPORTER_ASSERT(reporter, match);
}
for (int n = 1000; n; n--) {
size_t size = 50;
uint16_t src[100], src2[100];
uint8_t dst[200];
rand_fill(src, size);
size_t dstSize = SkPackBits::Pack16(src, size, dst);
size_t maxSize = SkPackBits::ComputeMaxSize16(size);
REPORTER_ASSERT(reporter, maxSize >= dstSize);
size_t srcCount = SkPackBits::Unpack16(dst, dstSize, src2);
REPORTER_ASSERT(reporter, size == srcCount);
bool match = memcmp(src, src2, size * sizeof(uint16_t)) == 0;
REPORTER_ASSERT(reporter, match);
}
}
static const uint8_t gTest80[] = { 0, 0, 1, 1 };
static const uint8_t gTest81[] = { 1, 2, 3, 4, 5, 6 };
static const uint8_t gTest82[] = { 0, 0, 0, 1, 2, 3, 3, 3 };
static const uint8_t gTest83[] = { 0, 0, 0, 0, 0, 0, 1, 2, 3, 3, 3, 0, 0, 1 };
static const uint8_t gTest84[] = { 1, 0, 3, 0, 0, 0, 2, 1, 1, 2 };
static void rand_fill(uint8_t buffer[], int count) {
for (int i = 0; i < count; i++)
buffer[i] = (uint8_t)((gRand.nextU() >> 8) & 0x3);
}
static void test_pack8(skiatest::Reporter* reporter) {
static const struct {
const uint8_t* fSrc;
int fCount;
} gTests[] = {
{ gTest80, SK_ARRAY_COUNT(gTest80) },
{ gTest81, SK_ARRAY_COUNT(gTest81) },
{ gTest82, SK_ARRAY_COUNT(gTest82) },
{ gTest83, SK_ARRAY_COUNT(gTest83) },
{ gTest84, SK_ARRAY_COUNT(gTest84) }
};
for (size_t i = 4; i < SK_ARRAY_COUNT(gTests); i++) {
uint8_t dst[100];
size_t maxSize = SkPackBits::ComputeMaxSize8(gTests[i].fCount);
size_t dstSize = SkPackBits::Pack8(gTests[i].fSrc,
gTests[i].fCount, dst);
REPORTER_ASSERT(reporter, dstSize <= maxSize);
uint8_t src[100];
int srcCount = SkPackBits::Unpack8(dst, dstSize, src);
bool match = gTests[i].fCount == srcCount &&
memcmp(gTests[i].fSrc, src,
gTests[i].fCount * sizeof(uint8_t)) == 0;
REPORTER_ASSERT(reporter, match);
}
for (size_t size = 1; size <= 512; size += 1) {
for (int n = 100; n; n--) {
uint8_t src[600], src2[600];
uint8_t dst[600];
rand_fill(src, size);
size_t dstSize = SkPackBits::Pack8(src, size, dst);
size_t maxSize = SkPackBits::ComputeMaxSize8(size);
REPORTER_ASSERT(reporter, maxSize >= dstSize);
size_t srcCount = SkPackBits::Unpack8(dst, dstSize, src2);
REPORTER_ASSERT(reporter, size == srcCount);
bool match = memcmp(src, src2, size * sizeof(uint8_t)) == 0;
REPORTER_ASSERT(reporter, match);
for (int j = 0; j < 100; j++) {
size_t skip = gRand.nextU() % size;
size_t write = gRand.nextU() % size;
if (skip + write > size) {
write = size - skip;
}
SkPackBits::Unpack8(src, skip, write, dst);
bool match = memcmp(src, src2 + skip, write) == 0;
REPORTER_ASSERT(reporter, match);
}
}
}
}
static void TestPackBits(skiatest::Reporter* reporter) {
test_pack8(reporter);
test_pack16(reporter);
}
#include "TestClassDef.h"
DEFINE_TESTCLASS("PackBits", PackBitsTestClass, TestPackBits)
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