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