Parameterise Peripheral by its Devices and add CDChanger as one

2026-08-07 01:13:18 +00:00 · 2026-06-26 20:10:35 -07:00
parent d98cc8acad
commit 66bbf8639e
21 changed files with 1047 additions and 1022 deletions
@@ -0,0 +1,93 @@
+// copyright (C) 2006 Marcin Slonicki <marcin@softservice.com.pl>
+// copyright (C) 2007 Louis Frigon
+// Copyright (C) 2015 Allen Hill <allenofthehills@gmail.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <cstdint>
+
+#include "avclan.hpp"
+#include "avclan_defs.h"
+
+namespace avclan {
+
+class CDChanger {
+public:
+  enum State : uint8_t {
+    OPEN = 0x01,
+    ERR1 = 0x02,
+    SEEKING = 0x08,
+    PLAYBACK = 0x10,
+    SEEKING_TRACK = 0x20,
+    LOADING = 0x80,
+  };
+  enum CD : uint8_t {
+    CD1 = 1 << 0,
+    CD2 = 1 << 1,
+    CD3 = 1 << 2,
+    CD4 = 1 << 3,
+    CD5 = 1 << 4,
+    CD6 = 1 << 5,
+  };
+  enum Flags : uint8_t {
+    DISK_RANDOM = 1 << 1,
+    RANDOM = 1 << 2,
+    DISK_REPEAT = 1 << 3,
+    REPEAT = 1 << 4,
+    DISK_SCAN = 1 << 5,
+    SCAN = 1 << 6,
+  };
+
+  /// Message state machine
+  // - r_Nothing (0x00) means don't send current message
+  // - All other instances mean send current message and imply the presence of
+  //   follow-up messages within state machine
+  enum reaction_t : uint8_t {
+    r_Nothing = 0x00,
+    r_SendOnly,       // No further follow-up needed (beyond sending current)
+    r_StatusReport,   // Needs follow-up status report
+    r_NormalizeState, // cd_status needs normalized and resent
+    r_StartPlaying, // ~equivalent to normalizeState, but cycles to BeganPlaying
+    r_BeganPlaying,
+    r_TrackChange, // Time needs reset
+    r_Ejection,
+    r_Report_Load,
+    r_StateReport, // *IS* a status report (follow-up or unprompted)
+  };
+
+  static constexpr uint8_t id = dev_CD_CHANGER;
+  void init();
+
+  void handle(const AVCLAN_frame_t *in, AVCLAN_frame_t *out);
+  void react(AVCLAN_frame_t *out, detail::Error::Send err);
+  void enable(AVCLAN_frame_t *out);
+  void disable(AVCLAN_frame_t *out);
+  static bool pending();
+  static void resolvepending();
+  void emit(AVCLAN_frame_t *out);
+  void incrementTime();
+  bool isPlaying() const;
+
+private:
+  void startPlaying();
+  void stopPlaying();
+  void serialize(uint8_t *dst) const;
+  void setTime(uint8_t mins, uint8_t secs);
+  void generateStatus(AVCLAN_frame_t *status, bool is_unicast,
+                      devices to) const;
+  void normalizeState();
+
+  bool playing = false;
+  int failedStatusReports = 0;
+  uint8_t cds = CD1;
+  uint8_t state = SEEKING | SEEKING_TRACK;
+  uint8_t disc = 1;
+  uint8_t track = 1;   // Decimal storage; serialize to BCD
+  uint8_t mins = 0xFF; // Decimal storage; serialize to BCD
+  uint8_t secs = 0x7F; // Decimal storage; serialize to BCD
+  uint8_t flags = 0;
+  uint8_t flags2 = 0xC0;
+};
+
+} // namespace avclan