module-avb: adding state base and stream specific information

src/modules/module-avb/aecp-aem-state.h

@@ -0,0 +1,93 @@
+/* AVB support */
+/* SPDX-FileCopyrightText: Copyright © 2025 Alexandre Malki <alexandre.malki@kebag-logic.com> */
+/* SPDX-License-Identifier: MIT */
+
+#ifndef AVB_AECP_AEM_STATE_H
+#define AVB_AECP_AEM_STATE_H
+
+#include "aecp-aem-descriptors.h"
+
+/**
+ * The way structure are organised in a "derived" manner.
+ * Each of the state structure must directly "castable" into the descriptor
+ * that the state variable relies upon.
+ *
+ * For instance, if a stream_input descriptor is created, the state structure
+ * stream_input_state needs to be created as follow:
+ *
+ * 	struct stream_input_state {
+ * 		struct stream_input_desc ...
+ * 		...
+ * This way it's possible to get directly from the AEM command the descriptor
+ * and the state without having to create a mechanism for this.
+ */
+
+/**
+ * \brief The base information would be required
+ * 	for descriptor that needs to udpate for unsollictied
+ * 	notificaction.
+ */
+struct aecp_aem_state_base {
+    /**
+     * Originator of the control
+     * This is needed so the unsoolictied notification does not send back SUCCESS
+     * to the originator of of the unsolicited notification
+     */
+    uint64_t controller_entity_id;
+
+    /**
+     * To avoid sending on every change for unsol notifications, only once a
+     * second
+     */
+    int64_t last_update;
+
+    /** timeout absolute time*/
+    int64_t expire_timeout;
+};
+
+
+/**
+ * \brief The stream inputs are specified as in the IEEE-1722.1-2021
+ * 	Table 7-156
+ */
+struct aecp_aem_stream_input_counters {
+    struct aecp_aem_state_base base_state;
+
+    uint32_t media_locked;
+    uint32_t media_unlocked;
+    uint32_t stream_interrupted;
+    uint32_t seq_mistmatch;
+    uint32_t media_reset;
+    /** Timestamp Uncertain */
+    uint32_t tu;
+    uint32_t unsupported_format;
+    uint32_t late_timestamp;
+    uint32_t early_timestamp;
+    uint32_t frame_rx;
+};
+
+struct aecp_aem_stream_input_state {
+    struct avb_aem_desc_stream desc;
+
+    struct aecp_aem_stream_input_counters counters;
+    struct stream stream;
+};
+
+struct aecp_aem_stream_output_counters {
+    struct aecp_aem_state_base base_state;
+
+    uint32_t stream_start;
+    uint32_t stream_stop;
+    uint32_t media_reset;
+    uint32_t tu;
+    uint32_t frame_tx;
+};
+
+struct aecp_aem_stream_output_state {
+    struct avb_aem_desc_stream desc;
+
+    struct aecp_aem_stream_output_counters counters;
+    struct stream stream;
+};
+
+#endif // AVB_AECP_AEM_STATE_H