PipeWire: spa/utils/result.h Source File

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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
29extern "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 */
defs.h
spa/utils/defs.h
list.h
spa/utils/list.h