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66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/* AVB support */
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/* SPDX-FileCopyrightText: Copyright © 2022 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#ifndef AVB_UTILS_H
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#define AVB_UTILS_H
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#include <spa/utils/json.h>
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#include "internal.h"
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static inline char *avb_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 avb_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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static inline char *avb_utils_format_addr(char *str, size_t size, const uint8_t addr[6])
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{
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snprintf(str, size, "%02x:%02x:%02x:%02x:%02x:%02x",
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addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
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return str;
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}
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static inline int avb_utils_parse_addr(const char *str, int len, uint8_t addr[6])
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{
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char s[64];
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uint8_t v[6];
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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",
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&v[0], &v[1], &v[2], &v[3], &v[4], &v[5]) != 6)
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return -EINVAL;
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memcpy(addr, v, 6);
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return 0;
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}
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#endif /* AVB_UTILS_H */
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