Shared Catalog

include/vamp_pico/input.hpp

@@ -0,0 +1,56 @@
+#pragma once
+
+#include <array>
+#include <cstddef>
+#include <cstdint>
+#include <optional>
+
+#include <vamp_protocol/page_control.hpp>
+
+
+namespace vamp_pico {
+
+enum class request_kind {
+  DISPLAY,
+  COMMAND,
+  HEARTBEAT,
+};
+
+struct remote_request {
+  request_kind kind{request_kind::DISPLAY};
+  vamp_protocol::page_command command{vamp_protocol::page_command::NEXT};
+};
+
+class gesture_state {
+public:
+  auto update(std::bool_t touching, std::uint64_t now_ms) -> std::optional<vamp_protocol::page_command>;
+private:
+  std::bool_t touching_{};
+  std::bool_t hold_sent_{};
+  std::bool_t pending_tap_{};
+  std::uint64_t down_ms_{};
+  std::uint64_t last_up_ms_{};
+};
+
+enum class enqueue_result {
+  QUEUED,
+  BUSY,
+};
+
+class request_scheduler {
+public:
+  static constexpr auto command_capacity = std::size_t{16};
+  auto enqueue(vamp_protocol::page_command command) -> enqueue_result;
+  auto next(std::uint64_t now_ms) -> std::optional<remote_request>;
+  auto complete(std::uint64_t now_ms) -> void;
+  auto queued() const -> std::size_t;
+private:
+  std::array<vamp_protocol::page_command, command_capacity> commands_{};
+  std::size_t head_{};
+  std::size_t size_{};
+  std::bool_t in_flight_{};
+  std::bool_t completed_{};
+  std::uint64_t completed_ms_{};
+};
+
+}