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reed@google.comdde09562011-05-23 12:21:05 +00001/*
epoger@google.comec3ed6a2011-07-28 14:26:00 +00002 * Copyright 2011 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.
reed@google.comdde09562011-05-23 12:21:05 +00006 */
7
scroggo@google.comdd394882012-07-24 20:47:55 +00008#include "SkRandom.h"
reed@google.comdde09562011-05-23 12:21:05 +00009#include "SkReader32.h"
10#include "SkWriter32.h"
tfarina@chromium.org8f6884a2014-01-24 20:56:26 +000011#include "Test.h"
reed@google.comdde09562011-05-23 12:21:05 +000012
reed@google.com1cf58d02012-08-30 14:03:21 +000013static void check_contents(skiatest::Reporter* reporter, const SkWriter32& writer,
14 const void* expected, size_t size) {
15 SkAutoSMalloc<256> storage(size);
16 REPORTER_ASSERT(reporter, writer.bytesWritten() == size);
17 writer.flatten(storage.get());
18 REPORTER_ASSERT(reporter, !memcmp(storage.get(), expected, size));
19}
20
mtklein@google.com8b4ba632013-09-03 18:07:01 +000021
22static void test_reserve(skiatest::Reporter* reporter) {
23 // There used to be a bug where we'd assert your first reservation had to
24 // fit in external storage if you used it. This would crash in debug mode.
25 uint8_t storage[4];
commit-bot@chromium.org19382422014-01-14 20:51:26 +000026 SkWriter32 writer(storage, sizeof(storage));
mtklein@google.com8b4ba632013-09-03 18:07:01 +000027 writer.reserve(40);
28}
29
commit-bot@chromium.org47fa1362013-08-09 16:03:05 +000030static void test_string_null(skiatest::Reporter* reporter) {
31 uint8_t storage[8];
commit-bot@chromium.org19382422014-01-14 20:51:26 +000032 SkWriter32 writer(storage, sizeof(storage));
commit-bot@chromium.org47fa1362013-08-09 16:03:05 +000033
34 // Can we write NULL?
35 writer.writeString(NULL);
mtklein@google.com0038c122013-08-15 21:01:32 +000036 const int32_t expected[] = { 0x0, 0x0 };
37 check_contents(reporter, writer, expected, sizeof(expected));
commit-bot@chromium.org47fa1362013-08-09 16:03:05 +000038}
39
reed@google.com1cf58d02012-08-30 14:03:21 +000040static void test_rewind(skiatest::Reporter* reporter) {
commit-bot@chromium.org19382422014-01-14 20:51:26 +000041 SkSWriter32<32> writer;
reed@google.com1cf58d02012-08-30 14:03:21 +000042 int32_t array[3] = { 1, 2, 4 };
skia.committer@gmail.coma27096b2012-08-30 14:38:00 +000043
reed@google.com1cf58d02012-08-30 14:03:21 +000044 REPORTER_ASSERT(reporter, 0 == writer.bytesWritten());
45 for (size_t i = 0; i < SK_ARRAY_COUNT(array); ++i) {
46 writer.writeInt(array[i]);
47 }
48 check_contents(reporter, writer, array, sizeof(array));
49
50 writer.rewindToOffset(2*sizeof(int32_t));
51 REPORTER_ASSERT(reporter, sizeof(array) - 4 == writer.bytesWritten());
52 writer.writeInt(3);
53 REPORTER_ASSERT(reporter, sizeof(array) == writer.bytesWritten());
54 array[2] = 3;
55 check_contents(reporter, writer, array, sizeof(array));
reed@google.comd7e27822012-08-31 20:17:56 +000056
57 // test rewinding past allocated chunks. This used to crash because we
58 // didn't truncate our link-list after freeing trailing blocks
59 {
commit-bot@chromium.org19382422014-01-14 20:51:26 +000060 SkWriter32 writer;
reed@google.comd7e27822012-08-31 20:17:56 +000061 for (int i = 0; i < 100; ++i) {
62 writer.writeInt(i);
63 }
64 REPORTER_ASSERT(reporter, 100*4 == writer.bytesWritten());
65 for (int j = 100*4; j >= 0; j -= 16) {
66 writer.rewindToOffset(j);
67 }
68 REPORTER_ASSERT(reporter, writer.bytesWritten() < 16);
69 }
reed@google.com1cf58d02012-08-30 14:03:21 +000070}
71
reed@google.com51c62a62012-06-12 20:47:53 +000072static void test_ptr(skiatest::Reporter* reporter) {
commit-bot@chromium.org19382422014-01-14 20:51:26 +000073 SkSWriter32<32> writer;
rmistry@google.comd6176b02012-08-23 18:14:13 +000074
reed@google.com51c62a62012-06-12 20:47:53 +000075 void* p0 = reporter;
76 void* p1 = &writer;
77
78 // try writing ptrs where at least one of them may be at a non-multiple of
79 // 8 boundary, to confirm this works on 64bit machines.
80
81 writer.writePtr(p0);
82 writer.write8(0x33);
83 writer.writePtr(p1);
84 writer.write8(0x66);
85
reed@google.com44699382013-10-31 17:28:30 +000086 size_t size = writer.bytesWritten();
reed@google.com51c62a62012-06-12 20:47:53 +000087 REPORTER_ASSERT(reporter, 2 * sizeof(void*) + 2 * sizeof(int32_t));
88
89 char buffer[32];
90 SkASSERT(sizeof(buffer) >= size);
91 writer.flatten(buffer);
92
93 SkReader32 reader(buffer, size);
94 REPORTER_ASSERT(reporter, reader.readPtr() == p0);
95 REPORTER_ASSERT(reporter, reader.readInt() == 0x33);
96 REPORTER_ASSERT(reporter, reader.readPtr() == p1);
97 REPORTER_ASSERT(reporter, reader.readInt() == 0x66);
98}
99
reed@google.comdde09562011-05-23 12:21:05 +0000100static void test1(skiatest::Reporter* reporter, SkWriter32* writer) {
101 const uint32_t data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
102 for (size_t i = 0; i < SK_ARRAY_COUNT(data); ++i) {
reed@google.com44699382013-10-31 17:28:30 +0000103 REPORTER_ASSERT(reporter, i*4 == writer->bytesWritten());
reed@google.comdde09562011-05-23 12:21:05 +0000104 writer->write32(data[i]);
commit-bot@chromium.org536ac5e2014-02-11 22:38:51 +0000105 REPORTER_ASSERT(reporter, data[i] == writer->readTAt<uint32_t>(i * 4));
reed@google.comdde09562011-05-23 12:21:05 +0000106 }
107
108 char buffer[sizeof(data)];
reed@google.com44699382013-10-31 17:28:30 +0000109 REPORTER_ASSERT(reporter, sizeof(buffer) == writer->bytesWritten());
reed@google.comdde09562011-05-23 12:21:05 +0000110 writer->flatten(buffer);
111 REPORTER_ASSERT(reporter, !memcmp(data, buffer, sizeof(buffer)));
112}
113
114static void test2(skiatest::Reporter* reporter, SkWriter32* writer) {
115 static const char gStr[] = "abcdefghimjklmnopqrstuvwxyz";
116 size_t i;
117
118 size_t len = 0;
119 for (i = 0; i <= 26; ++i) {
120 len += SkWriter32::WriteStringSize(gStr, i);
121 writer->writeString(gStr, i);
122 }
reed@google.com44699382013-10-31 17:28:30 +0000123 REPORTER_ASSERT(reporter, writer->bytesWritten() == len);
reed@google.comdde09562011-05-23 12:21:05 +0000124
125 SkAutoMalloc storage(len);
126 writer->flatten(storage.get());
127
128 SkReader32 reader;
129 reader.setMemory(storage.get(), len);
130 for (i = 0; i <= 26; ++i) {
131 REPORTER_ASSERT(reporter, !reader.eof());
132 const char* str = reader.readString(&len);
133 REPORTER_ASSERT(reporter, i == len);
134 REPORTER_ASSERT(reporter, strlen(str) == len);
135 REPORTER_ASSERT(reporter, !memcmp(str, gStr, len));
scroggo@google.come9617eb2012-07-23 13:44:10 +0000136 // Ensure that the align4 of the string is padded with zeroes.
137 size_t alignedSize = SkAlign4(len + 1);
138 for (size_t j = len; j < alignedSize; j++) {
139 REPORTER_ASSERT(reporter, 0 == str[j]);
140 }
reed@google.comdde09562011-05-23 12:21:05 +0000141 }
142 REPORTER_ASSERT(reporter, reader.eof());
143}
144
scroggo@google.comdd394882012-07-24 20:47:55 +0000145static void testWritePad(skiatest::Reporter* reporter, SkWriter32* writer) {
146 // Create some random data to write.
147 const size_t dataSize = 10<<2;
148 SkASSERT(SkIsAlign4(dataSize));
149
150 SkAutoMalloc originalData(dataSize);
151 {
commit-bot@chromium.orge0e7cfe2013-09-09 20:09:12 +0000152 SkRandom rand(0);
scroggo@google.comdd394882012-07-24 20:47:55 +0000153 uint32_t* ptr = static_cast<uint32_t*>(originalData.get());
154 uint32_t* stop = ptr + (dataSize>>2);
155 while (ptr < stop) {
156 *ptr++ = rand.nextU();
157 }
158
159 // Write the random data to the writer at different lengths for
160 // different alignments.
161 for (size_t len = 0; len < dataSize; len++) {
162 writer->writePad(originalData.get(), len);
163 }
164 }
165
bsalomonfbaace02014-12-12 16:41:46 -0800166 size_t totalBytes = writer->bytesWritten();
scroggo@google.comdd394882012-07-24 20:47:55 +0000167
168 SkAutoMalloc readStorage(totalBytes);
169 writer->flatten(readStorage.get());
170
171 SkReader32 reader;
172 reader.setMemory(readStorage.get(), totalBytes);
173
174 for (size_t len = 0; len < dataSize; len++) {
175 const char* readPtr = static_cast<const char*>(reader.skip(len));
176 // Ensure that the data read is the same as what was written.
177 REPORTER_ASSERT(reporter, memcmp(readPtr, originalData.get(), len) == 0);
178 // Ensure that the rest is padded with zeroes.
179 const char* stop = readPtr + SkAlign4(len);
180 readPtr += len;
181 while (readPtr < stop) {
182 REPORTER_ASSERT(reporter, *readPtr++ == 0);
183 }
184 }
185}
186
commit-bot@chromium.org536ac5e2014-02-11 22:38:51 +0000187static void testOverwriteT(skiatest::Reporter* reporter, SkWriter32* writer) {
188 const size_t padding = 64;
189
190 const uint32_t uint1 = 0x12345678;
191 const uint32_t uint2 = 0x98765432;
192 const SkScalar scalar1 = 1234.5678f;
193 const SkScalar scalar2 = 9876.5432f;
194 const SkRect rect1 = SkRect::MakeXYWH(1, 2, 3, 4);
195 const SkRect rect2 = SkRect::MakeXYWH(5, 6, 7, 8);
196
197 for (size_t i = 0; i < (padding / 4); ++i) {
198 writer->write32(0);
199 }
200
201 writer->write32(uint1);
202 writer->writeRect(rect1);
203 writer->writeScalar(scalar1);
204
205 for (size_t i = 0; i < (padding / 4); ++i) {
206 writer->write32(0);
207 }
208
209 REPORTER_ASSERT(reporter, writer->readTAt<uint32_t>(padding) == uint1);
210 REPORTER_ASSERT(reporter, writer->readTAt<SkRect>(padding + sizeof(uint32_t)) == rect1);
211 REPORTER_ASSERT(reporter, writer->readTAt<SkScalar>(
212 padding + sizeof(uint32_t) + sizeof(SkRect)) == scalar1);
213
214 writer->overwriteTAt(padding, uint2);
215 writer->overwriteTAt(padding + sizeof(uint32_t), rect2);
216 writer->overwriteTAt(padding + sizeof(uint32_t) + sizeof(SkRect), scalar2);
217
218 REPORTER_ASSERT(reporter, writer->readTAt<uint32_t>(padding) == uint2);
219 REPORTER_ASSERT(reporter, writer->readTAt<SkRect>(padding + sizeof(uint32_t)) == rect2);
220 REPORTER_ASSERT(reporter, writer->readTAt<SkScalar>(
221 padding + sizeof(uint32_t) + sizeof(SkRect)) == scalar2);
222}
223
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000224DEF_TEST(Writer32_dynamic, reporter) {
225 SkWriter32 writer;
226 test1(reporter, &writer);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000227
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000228 writer.reset();
229 test2(reporter, &writer);
scroggo@google.comdd394882012-07-24 20:47:55 +0000230
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000231 writer.reset();
232 testWritePad(reporter, &writer);
commit-bot@chromium.org536ac5e2014-02-11 22:38:51 +0000233
234 writer.reset();
235 testOverwriteT(reporter, &writer);
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000236}
rmistry@google.comd6176b02012-08-23 18:14:13 +0000237
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000238DEF_TEST(Writer32_contiguous, reporter) {
239 uint32_t storage[256];
240 SkWriter32 writer;
241 writer.reset(storage, sizeof(storage));
242 // This write is small enough to fit in storage, so it's contiguous.
243 test1(reporter, &writer);
244 REPORTER_ASSERT(reporter, writer.contiguousArray() != NULL);
reed@google.comdde09562011-05-23 12:21:05 +0000245
commit-bot@chromium.orgafe38b12014-02-11 11:18:12 +0000246 // Everything other aspect of contiguous/non-contiguous is an
247 // implementation detail, not part of the public contract for
248 // SkWriter32, and so not tested here.
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000249}
skia.committer@gmail.comb89a03c2012-12-22 02:02:33 +0000250
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000251DEF_TEST(Writer32_small, reporter) {
252 SkSWriter32<8 * sizeof(intptr_t)> writer;
253 test1(reporter, &writer);
254 writer.reset(); // should just rewind our storage
255 test2(reporter, &writer);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000256
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000257 writer.reset();
258 testWritePad(reporter, &writer);
commit-bot@chromium.org536ac5e2014-02-11 22:38:51 +0000259
260 writer.reset();
261 testOverwriteT(reporter, &writer);
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000262}
rmistry@google.comd6176b02012-08-23 18:14:13 +0000263
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000264DEF_TEST(Writer32_large, reporter) {
265 SkSWriter32<1024 * sizeof(intptr_t)> writer;
266 test1(reporter, &writer);
267 writer.reset(); // should just rewind our storage
268 test2(reporter, &writer);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000269
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000270 writer.reset();
271 testWritePad(reporter, &writer);
commit-bot@chromium.org536ac5e2014-02-11 22:38:51 +0000272
273 writer.reset();
274 testOverwriteT(reporter, &writer);
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000275}
rmistry@google.comd6176b02012-08-23 18:14:13 +0000276
commit-bot@chromium.org19382422014-01-14 20:51:26 +0000277DEF_TEST(Writer32_misc, reporter) {
mtklein@google.com8b4ba632013-09-03 18:07:01 +0000278 test_reserve(reporter);
commit-bot@chromium.org47fa1362013-08-09 16:03:05 +0000279 test_string_null(reporter);
reed@google.com51c62a62012-06-12 20:47:53 +0000280 test_ptr(reporter);
reed@google.com1cf58d02012-08-30 14:03:21 +0000281 test_rewind(reporter);
reed@google.comdde09562011-05-23 12:21:05 +0000282}
commit-bot@chromium.orgc30dcb92014-03-12 17:04:28 +0000283
284DEF_TEST(Writer32_snapshot, reporter) {
285 int32_t array[] = { 1, 2, 4, 11 };
286 SkSWriter32<sizeof(array) + 4> writer;
287 writer.write(array, sizeof(array));
288 check_contents(reporter, writer, array, sizeof(array));
289 const void* beforeData = writer.contiguousArray();
290 SkAutoDataUnref snapshot(writer.snapshotAsData());
291 // check the snapshot forced a copy of the static data
292 REPORTER_ASSERT(reporter, snapshot->data() != beforeData);
293 REPORTER_ASSERT(reporter, snapshot->size() == writer.bytesWritten());
294}
295
296DEF_TEST(Writer32_snapshot_dynamic, reporter) {
297 int32_t array[] = { 1, 2, 4, 11 };
298 SkWriter32 writer;
299 writer.write(array, sizeof(array));
300 check_contents(reporter, writer, array, sizeof(array));
301 // force a capacity increase so we can test COW behaviour
302 writer.write(array, sizeof(array));
303 writer.rewindToOffset(sizeof(array));
304 const void* beforeData = writer.contiguousArray();
305 SkAutoDataUnref snapshot(writer.snapshotAsData());
306 // check the snapshot still points to the same data as the writer
307 REPORTER_ASSERT(reporter, writer.contiguousArray() == beforeData);
308 REPORTER_ASSERT(reporter, snapshot->data() == beforeData);
309 REPORTER_ASSERT(reporter, snapshot->size() == writer.bytesWritten());
310 // write more data that would fit in the buffer
311 writer.write(array, sizeof(array));
312 // test it triggered COW anyway
313 REPORTER_ASSERT(reporter, writer.contiguousArray() != beforeData);
314}