PipeWire: result.h Source File

PipeWire 0.3.34

result.h
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1 /* Simple Plugin API
2 *
3 * Copyright © 2018 Wim Taymans
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 #ifndef SPA_UTILS_RESULT_H
26 #define SPA_UTILS_RESULT_H
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
37 #include <spa/utils/defs.h>
38 #include <spa/utils/list.h>
39
40 #define SPA_ASYNC_BIT (1 << 30)
41 #define SPA_ASYNC_SEQ_MASK (SPA_ASYNC_BIT - 1)
42 #define SPA_ASYNC_MASK (~SPA_ASYNC_SEQ_MASK)
43
44 #define SPA_RESULT_IS_OK(res) ((res) >= 0)
45 #define SPA_RESULT_IS_ERROR(res) ((res) < 0)
46 #define SPA_RESULT_IS_ASYNC(res) (((res) & SPA_ASYNC_MASK) == SPA_ASYNC_BIT)
47
48 #define SPA_RESULT_ASYNC_SEQ(res) ((res) & SPA_ASYNC_SEQ_MASK)
49 #define SPA_RESULT_RETURN_ASYNC(seq) (SPA_ASYNC_BIT | SPA_RESULT_ASYNC_SEQ(seq))
50
51 #define spa_strerror(err) \
52 ({ \
53 int _err = -err; \
54 if (SPA_RESULT_IS_ASYNC(err)) \
55 _err = EINPROGRESS; \
56 strerror(_err); \
57 })
58
63 #ifdef __cplusplus
64 } /* extern "C" */
65 #endif
66
67 #endif /* SPA_UTILS_RESULT_H */
defs.h
list.h