3 * unit test for GstBuffer
5 * Copyright (C) <2005> Thomas Vander Stichele <thomas at apestaart dot org>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #include <gst/check/gstcheck.h>
25 GST_START_TEST (test_caps)
28 GstCaps *caps, *caps2;
30 buffer = gst_buffer_new_and_alloc (4);
31 caps = gst_caps_from_string ("audio/x-raw-int");
32 ASSERT_CAPS_REFCOUNT (caps, "caps", 1);
34 fail_unless (GST_BUFFER_CAPS (buffer) == NULL);
36 gst_buffer_set_caps (buffer, caps);
37 ASSERT_CAPS_REFCOUNT (caps, "caps", 2);
39 fail_unless (GST_BUFFER_CAPS (buffer) == caps);
40 ASSERT_CAPS_REFCOUNT (caps, "caps", 2);
42 caps2 = gst_caps_from_string ("audio/x-raw-float");
43 ASSERT_CAPS_REFCOUNT (caps2, "caps2", 1);
45 gst_buffer_set_caps (buffer, caps2);
46 ASSERT_CAPS_REFCOUNT (caps, "caps", 1);
47 ASSERT_CAPS_REFCOUNT (caps2, "caps2", 2);
49 gst_buffer_set_caps (buffer, NULL);
50 ASSERT_CAPS_REFCOUNT (caps, "caps", 1);
51 ASSERT_CAPS_REFCOUNT (caps2, "caps2", 1);
53 /* clean up, with caps2 still set as caps */
54 gst_buffer_set_caps (buffer, caps2);
55 ASSERT_CAPS_REFCOUNT (caps2, "caps2", 2);
56 gst_buffer_unref (buffer);
57 ASSERT_CAPS_REFCOUNT (caps2, "caps2", 1);
58 gst_caps_unref (caps);
59 gst_caps_unref (caps2);
65 GST_START_TEST (test_subbuffer)
67 GstBuffer *buffer, *sub;
69 buffer = gst_buffer_new_and_alloc (4);
70 memset (GST_BUFFER_DATA (buffer), 0, 4);
72 sub = gst_buffer_create_sub (buffer, 1, 2);
73 fail_if (sub == NULL, "create_sub of buffer returned NULL");
74 fail_unless (GST_BUFFER_SIZE (sub) == 2, "subbuffer has wrong size");
75 fail_unless (memcmp (GST_BUFFER_DATA (buffer) + 1, GST_BUFFER_DATA (sub),
76 2) == 0, "subbuffer contains the wrong data");
77 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 2);
78 ASSERT_BUFFER_REFCOUNT (sub, "subbuffer", 1);
81 gst_buffer_unref (sub);
82 gst_buffer_unref (buffer);
87 GST_START_TEST (test_is_span_fast)
89 GstBuffer *buffer, *sub1, *sub2;
91 buffer = gst_buffer_new_and_alloc (4);
93 sub1 = gst_buffer_create_sub (buffer, 0, 2);
94 fail_if (sub1 == NULL, "create_sub of buffer returned NULL");
96 sub2 = gst_buffer_create_sub (buffer, 2, 2);
97 fail_if (sub2 == NULL, "create_sub of buffer returned NULL");
99 fail_if (gst_buffer_is_span_fast (buffer, sub2) == TRUE,
100 "a parent buffer can't be span_fasted");
102 fail_if (gst_buffer_is_span_fast (sub1, buffer) == TRUE,
103 "a parent buffer can't be span_fasted");
105 fail_if (gst_buffer_is_span_fast (sub1, sub2) == FALSE,
106 "two subbuffers next to each other should be span_fast");
109 gst_buffer_unref (sub1);
110 gst_buffer_unref (sub2);
111 gst_buffer_unref (buffer);
116 GST_START_TEST (test_span)
118 GstBuffer *buffer, *sub1, *sub2, *span;
120 buffer = gst_buffer_new_and_alloc (4);
121 memcpy (GST_BUFFER_DATA (buffer), "data", 4);
123 ASSERT_CRITICAL (gst_buffer_span (NULL, 1, NULL, 2));
124 ASSERT_CRITICAL (gst_buffer_span (buffer, 1, NULL, 2));
125 ASSERT_CRITICAL (gst_buffer_span (NULL, 1, buffer, 2));
126 ASSERT_CRITICAL (gst_buffer_span (buffer, 0, buffer, 10));
128 sub1 = gst_buffer_create_sub (buffer, 0, 2);
129 fail_if (sub1 == NULL, "create_sub of buffer returned NULL");
131 sub2 = gst_buffer_create_sub (buffer, 2, 2);
132 fail_if (sub2 == NULL, "create_sub of buffer returned NULL");
134 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
135 ASSERT_BUFFER_REFCOUNT (sub1, "sub1", 1);
136 ASSERT_BUFFER_REFCOUNT (sub2, "sub2", 1);
138 /* span will create a new subbuffer from the parent */
139 span = gst_buffer_span (sub1, 0, sub2, 4);
140 fail_unless (GST_BUFFER_SIZE (span) == 4, "spanned buffer is wrong size");
141 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 4);
142 ASSERT_BUFFER_REFCOUNT (sub1, "sub1", 1);
143 ASSERT_BUFFER_REFCOUNT (sub2, "sub2", 1);
144 ASSERT_BUFFER_REFCOUNT (span, "span", 1);
145 fail_unless (memcmp (GST_BUFFER_DATA (span), "data", 4) == 0,
146 "spanned buffer contains the wrong data");
147 gst_buffer_unref (span);
148 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
150 /* span from non-contiguous buffers will create new buffers */
151 span = gst_buffer_span (sub2, 0, sub1, 4);
152 fail_unless (GST_BUFFER_SIZE (span) == 4, "spanned buffer is wrong size");
153 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
154 ASSERT_BUFFER_REFCOUNT (sub1, "sub1", 1);
155 ASSERT_BUFFER_REFCOUNT (sub2, "sub2", 1);
156 ASSERT_BUFFER_REFCOUNT (span, "span", 1);
157 fail_unless (memcmp (GST_BUFFER_DATA (span), "tada", 4) == 0,
158 "spanned buffer contains the wrong data");
159 gst_buffer_unref (span);
160 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
162 /* span with different sizes */
163 span = gst_buffer_span (sub1, 1, sub2, 3);
164 fail_unless (GST_BUFFER_SIZE (span) == 3, "spanned buffer is wrong size");
165 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 4);
166 ASSERT_BUFFER_REFCOUNT (sub1, "sub1", 1);
167 ASSERT_BUFFER_REFCOUNT (sub2, "sub2", 1);
168 ASSERT_BUFFER_REFCOUNT (span, "span", 1);
169 fail_unless (memcmp (GST_BUFFER_DATA (span), "ata", 3) == 0,
170 "spanned buffer contains the wrong data");
171 gst_buffer_unref (span);
172 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
174 span = gst_buffer_span (sub2, 0, sub1, 3);
175 fail_unless (GST_BUFFER_SIZE (span) == 3, "spanned buffer is wrong size");
176 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
177 ASSERT_BUFFER_REFCOUNT (sub1, "sub1", 1);
178 ASSERT_BUFFER_REFCOUNT (sub2, "sub2", 1);
179 ASSERT_BUFFER_REFCOUNT (span, "span", 1);
180 fail_unless (memcmp (GST_BUFFER_DATA (span), "tad", 3) == 0,
181 "spanned buffer contains the wrong data");
182 gst_buffer_unref (span);
183 ASSERT_BUFFER_REFCOUNT (buffer, "parent", 3);
186 gst_buffer_unref (sub1);
187 gst_buffer_unref (sub2);
188 gst_buffer_unref (buffer);
194 static const char ro_memory[] = "abcdefghijklmnopqrstuvwxyz";
197 create_read_only_buffer (void)
201 buf = (GstBuffer *) gst_mini_object_new (GST_TYPE_BUFFER);
203 /* assign some read-only data to the new buffer */
204 GST_BUFFER_DATA (buf) = (guint8 *) ro_memory;
205 GST_BUFFER_SIZE (buf) = sizeof (ro_memory);
207 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_READONLY);
212 GST_START_TEST (test_make_writable)
214 GstBuffer *buf, *buf2;
216 /* create read-only buffer and make it writable */
217 buf = create_read_only_buffer ();
218 fail_unless (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY),
219 "read-only buffer should have read-only flag set");
220 buf = gst_buffer_make_writable (buf);
221 fail_unless (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY),
222 "writable buffer must not have read-only flag set");
223 GST_BUFFER_DATA (buf)[4] = 'a';
224 gst_buffer_unref (buf);
226 /* alloc'ed buffer with refcount 1 should be writable */
227 buf = gst_buffer_new_and_alloc (32);
228 fail_unless (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY),
229 "_new_and_alloc'ed buffer must not have read-only flag set");
230 buf2 = gst_buffer_make_writable (buf);
231 fail_unless (buf == buf2,
232 "_make_writable() should have returned same buffer");
233 gst_buffer_unref (buf2);
235 /* alloc'ed buffer with refcount >1 should be copied */
236 buf = gst_buffer_new_and_alloc (32);
237 fail_unless (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY),
238 "_new_and_alloc'ed buffer must not have read-only flag set");
239 gst_buffer_ref (buf);
240 buf2 = gst_buffer_make_writable (buf);
241 fail_unless (buf != buf2, "_make_writable() should have returned a copy!");
242 gst_buffer_unref (buf2);
243 gst_buffer_unref (buf);
248 GST_START_TEST (test_subbuffer_make_writable)
250 GstBuffer *buf, *sub_buf;
252 /* create sub-buffer of read-only buffer and make it writable */
253 buf = create_read_only_buffer ();
254 fail_unless (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY),
255 "read-only buffer should have read-only flag set");
257 sub_buf = gst_buffer_create_sub (buf, 0, 8);
258 fail_unless (GST_BUFFER_FLAG_IS_SET (sub_buf, GST_BUFFER_FLAG_READONLY),
259 "sub-buffer of read-only buffer should have read-only flag set");
261 sub_buf = gst_buffer_make_writable (sub_buf);
262 fail_unless (!GST_BUFFER_FLAG_IS_SET (sub_buf, GST_BUFFER_FLAG_READONLY),
263 "writable buffer must not have read-only flag set");
264 GST_BUFFER_DATA (sub_buf)[4] = 'a';
265 gst_buffer_unref (sub_buf);
266 gst_buffer_unref (buf);
271 GST_START_TEST (test_metadata_writable)
273 GstBuffer *buffer, *sub1;
275 buffer = gst_buffer_new_and_alloc (4);
276 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
277 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
279 /* Buffer with refcount 1 should have writable metadata */
280 fail_unless (gst_buffer_is_metadata_writable (buffer) == TRUE);
282 /* Check that a buffer with refcount 2 does not have writable metadata */
283 gst_buffer_ref (buffer);
284 ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 2);
285 fail_unless (gst_buffer_is_metadata_writable (buffer) == FALSE);
287 /* Check that make_metadata_writable produces a new sub-buffer with
288 * writable metadata. */
289 sub1 = gst_buffer_make_metadata_writable (buffer);
290 fail_if (sub1 == buffer);
291 fail_unless (gst_buffer_is_metadata_writable (sub1) == TRUE);
293 /* Check that the original metadata is still not writable
294 * (subbuffer should be holding a reference, and so should we) */
295 ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 2);
296 fail_unless (gst_buffer_is_metadata_writable (buffer) == FALSE);
298 /* Check that make_metadata_writable() maintains the buffer flags */
299 fail_unless (GST_BUFFER_FLAG_IS_SET (sub1, GST_BUFFER_FLAG_DISCONT));
300 fail_unless (GST_BUFFER_FLAG_IS_SET (sub1, GST_BUFFER_FLAG_DELTA_UNIT));
302 /* Unset flags on writable buffer, then make sure they're still
303 * set on the original buffer */
304 GST_BUFFER_FLAG_UNSET (sub1, GST_BUFFER_FLAG_DISCONT);
305 GST_BUFFER_FLAG_UNSET (sub1, GST_BUFFER_FLAG_DELTA_UNIT);
306 fail_unless (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT));
307 fail_unless (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT));
309 /* Drop the subbuffer and check that the metadata is now writable again */
310 ASSERT_BUFFER_REFCOUNT (sub1, "sub1", 1);
311 gst_buffer_unref (sub1);
312 fail_unless (gst_buffer_is_metadata_writable (buffer) == TRUE);
314 ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 1);
315 gst_buffer_unref (buffer);
321 gst_buffer_suite (void)
323 Suite *s = suite_create ("GstBuffer");
324 TCase *tc_chain = tcase_create ("general");
326 suite_add_tcase (s, tc_chain);
327 tcase_add_test (tc_chain, test_caps);
328 tcase_add_test (tc_chain, test_subbuffer);
329 tcase_add_test (tc_chain, test_subbuffer_make_writable);
330 tcase_add_test (tc_chain, test_make_writable);
331 tcase_add_test (tc_chain, test_is_span_fast);
332 tcase_add_test (tc_chain, test_span);
333 tcase_add_test (tc_chain, test_metadata_writable);
337 GST_CHECK_MAIN (gst_buffer);