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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 "SkRandom.h"
#include "SkReader32.h"
#include "SkWriter32.h"
#include "Test.h"
static void test_ptr(skiatest::Reporter* reporter) {
SkSWriter32<32> writer(32);
void* p0 = reporter;
void* p1 = &writer;
// try writing ptrs where at least one of them may be at a non-multiple of
// 8 boundary, to confirm this works on 64bit machines.
writer.writePtr(p0);
writer.write8(0x33);
writer.writePtr(p1);
writer.write8(0x66);
size_t size = writer.size();
REPORTER_ASSERT(reporter, 2 * sizeof(void*) + 2 * sizeof(int32_t));
char buffer[32];
SkASSERT(sizeof(buffer) >= size);
writer.flatten(buffer);
SkReader32 reader(buffer, size);
REPORTER_ASSERT(reporter, reader.readPtr() == p0);
REPORTER_ASSERT(reporter, reader.readInt() == 0x33);
REPORTER_ASSERT(reporter, reader.readPtr() == p1);
REPORTER_ASSERT(reporter, reader.readInt() == 0x66);
}
static void test1(skiatest::Reporter* reporter, SkWriter32* writer) {
const uint32_t data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
for (size_t i = 0; i < SK_ARRAY_COUNT(data); ++i) {
REPORTER_ASSERT(reporter, i*4 == writer->size());
writer->write32(data[i]);
uint32_t* addr = writer->peek32(i * 4);
REPORTER_ASSERT(reporter, data[i] == *addr);
}
char buffer[sizeof(data)];
REPORTER_ASSERT(reporter, sizeof(buffer) == writer->size());
writer->flatten(buffer);
REPORTER_ASSERT(reporter, !memcmp(data, buffer, sizeof(buffer)));
}
static void test2(skiatest::Reporter* reporter, SkWriter32* writer) {
static const char gStr[] = "abcdefghimjklmnopqrstuvwxyz";
size_t i;
size_t len = 0;
for (i = 0; i <= 26; ++i) {
len += SkWriter32::WriteStringSize(gStr, i);
writer->writeString(gStr, i);
}
REPORTER_ASSERT(reporter, writer->size() == len);
SkAutoMalloc storage(len);
writer->flatten(storage.get());
SkReader32 reader;
reader.setMemory(storage.get(), len);
for (i = 0; i <= 26; ++i) {
REPORTER_ASSERT(reporter, !reader.eof());
const char* str = reader.readString(&len);
REPORTER_ASSERT(reporter, i == len);
REPORTER_ASSERT(reporter, strlen(str) == len);
REPORTER_ASSERT(reporter, !memcmp(str, gStr, len));
// Ensure that the align4 of the string is padded with zeroes.
size_t alignedSize = SkAlign4(len + 1);
for (size_t j = len; j < alignedSize; j++) {
REPORTER_ASSERT(reporter, 0 == str[j]);
}
}
REPORTER_ASSERT(reporter, reader.eof());
}
static void testWritePad(skiatest::Reporter* reporter, SkWriter32* writer) {
// Create some random data to write.
const size_t dataSize = 10<<2;
SkASSERT(SkIsAlign4(dataSize));
SkAutoMalloc originalData(dataSize);
{
SkRandom rand(0);
uint32_t* ptr = static_cast<uint32_t*>(originalData.get());
uint32_t* stop = ptr + (dataSize>>2);
while (ptr < stop) {
*ptr++ = rand.nextU();
}
// Write the random data to the writer at different lengths for
// different alignments.
for (size_t len = 0; len < dataSize; len++) {
writer->writePad(originalData.get(), len);
}
}
uint32_t totalBytes = writer->size();
SkAutoMalloc readStorage(totalBytes);
writer->flatten(readStorage.get());
SkReader32 reader;
reader.setMemory(readStorage.get(), totalBytes);
for (size_t len = 0; len < dataSize; len++) {
const char* readPtr = static_cast<const char*>(reader.skip(len));
// Ensure that the data read is the same as what was written.
REPORTER_ASSERT(reporter, memcmp(readPtr, originalData.get(), len) == 0);
// Ensure that the rest is padded with zeroes.
const char* stop = readPtr + SkAlign4(len);
readPtr += len;
while (readPtr < stop) {
REPORTER_ASSERT(reporter, *readPtr++ == 0);
}
}
}
static void Tests(skiatest::Reporter* reporter) {
// dynamic allocator
{
SkWriter32 writer(256 * 4);
REPORTER_ASSERT(reporter, NULL == writer.getSingleBlock());
test1(reporter, &writer);
writer.reset();
test2(reporter, &writer);
writer.reset();
testWritePad(reporter, &writer);
}
// single-block
{
SkWriter32 writer(0);
uint32_t storage[256];
REPORTER_ASSERT(reporter, NULL == writer.getSingleBlock());
writer.reset(storage, sizeof(storage));
REPORTER_ASSERT(reporter, (void*)storage == writer.getSingleBlock());
test1(reporter, &writer);
writer.reset(storage, sizeof(storage));
test2(reporter, &writer);
writer.reset(storage, sizeof(storage));
testWritePad(reporter, &writer);
}
// small storage
{
SkSWriter32<8 * sizeof(intptr_t)> writer(100);
test1(reporter, &writer);
writer.reset(); // should just rewind our storage
test2(reporter, &writer);
writer.reset();
testWritePad(reporter, &writer);
}
// large storage
{
SkSWriter32<1024 * sizeof(intptr_t)> writer(100);
test1(reporter, &writer);
writer.reset(); // should just rewind our storage
test2(reporter, &writer);
writer.reset();
testWritePad(reporter, &writer);
}
test_ptr(reporter);
}
#include "TestClassDef.h"
DEFINE_TESTCLASS("Writer32", Writer32Class, Tests)
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