PipeWire  0.3.53
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 
42 #include <spa/utils/defs.h>
43 #include <spa/utils/list.h>
44 
45 #define SPA_ASYNC_BIT (1 << 30)
46 #define SPA_ASYNC_SEQ_MASK (SPA_ASYNC_BIT - 1)
47 #define SPA_ASYNC_MASK (~SPA_ASYNC_SEQ_MASK)
48 
49 #define SPA_RESULT_IS_OK(res) ((res) >= 0)
50 #define SPA_RESULT_IS_ERROR(res) ((res) < 0)
51 #define SPA_RESULT_IS_ASYNC(res) (((res) & SPA_ASYNC_MASK) == SPA_ASYNC_BIT)
52 
53 #define SPA_RESULT_ASYNC_SEQ(res) ((res) & SPA_ASYNC_SEQ_MASK)
54 #define SPA_RESULT_RETURN_ASYNC(seq) (SPA_ASYNC_BIT | SPA_RESULT_ASYNC_SEQ(seq))
55 
56 #define spa_strerror(err) \
57 ({ \
58  int _err = -err; \
59  if (SPA_RESULT_IS_ASYNC(err)) \
60  _err = EINPROGRESS; \
61  strerror(_err); \
62 })
63 
68 #ifdef __cplusplus
69 } /* extern "C" */
70 #endif
71 
72 #endif /* SPA_UTILS_RESULT_H */
spa/utils/defs.h
spa/utils/list.h