1 files changed, 86 insertions, 0 deletions
diff --git a/src/modules/module-avb/utils.h b/src/modules/module-avb/utils.h
new file mode 100644
index 0000000..f626722
--- /dev/null
+++ b/src/modules/module-avb/utils.h
@@ -0,0 +1,86 @@
+/* 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 */