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https://gitlab.freedesktop.org/pipewire/pipewire.git
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67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
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/* AVB support
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*
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* Copyright © 2022 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef AVBTP_UTILS_H
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#define AVBTP_UTILS_H
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#include "internal.h"
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static inline char *avbtp_utils_format_id(char *str, size_t size, const uint64_t id)
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{
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snprintf(str, size, "%02x:%02x:%02x:%02x:%02x:%02x:%04x",
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(uint8_t)(id >> 56),
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(uint8_t)(id >> 48),
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(uint8_t)(id >> 40),
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(uint8_t)(id >> 32),
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(uint8_t)(id >> 24),
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(uint8_t)(id >> 16),
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(uint16_t)(id));
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return str;
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}
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static inline int avbtp_utils_parse_id(const char *str, int len, uint64_t *id)
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{
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char s[64];
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uint8_t v[6];
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uint16_t unique_id;
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if (spa_json_parse_stringn(str, len, s, sizeof(s)) <= 0)
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return -EINVAL;
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if (sscanf(s, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hx",
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&v[0], &v[1], &v[2], &v[3],
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&v[4], &v[5], &unique_id) == 7) {
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*id = (uint64_t) v[0] << 56 |
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(uint64_t) v[1] << 48 |
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(uint64_t) v[2] << 40 |
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(uint64_t) v[3] << 32 |
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(uint64_t) v[4] << 24 |
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(uint64_t) v[5] << 16 |
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unique_id;
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} else if (!spa_atou64(str, id, 0))
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return -EINVAL;
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return 0;
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}
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#endif /* AVBTP_UTILS_H */
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