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217 lines
8.2 KiB
C
217 lines
8.2 KiB
C
/**
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* @file infrared_signal.h
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* @brief Infrared signal library.
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*
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* Infrared signals may be of two types:
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* - known to the infrared signal decoder, or *parsed* signals
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* - the rest, or *raw* signals, which are treated merely as a set of timings.
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*/
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#pragma once
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#include <flipper_format/flipper_format.h>
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#include <infrared/encoder_decoder/infrared.h>
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/**
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* @brief InfraredSignal opaque type declaration.
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*/
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typedef struct InfraredSignal InfraredSignal;
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/**
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* @brief Raw signal type definition.
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*
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* Measurement units used:
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* - time: microseconds (uS)
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* - frequency: Hertz (Hz)
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* - duty_cycle: no units, fraction between 0 and 1.
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*/
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typedef struct {
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size_t timings_size; /**< Number of elements in the timings array. */
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uint32_t* timings; /**< Pointer to an array of timings describing the signal. */
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uint32_t frequency; /**< Carrier frequency of the signal. */
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float duty_cycle; /**< Duty cycle of the signal. */
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} InfraredRawSignal;
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/**
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* @brief Create a new InfraredSignal instance.
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*
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* @returns pointer to the instance created.
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*/
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InfraredSignal* infrared_signal_alloc(void);
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/**
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* @brief Delete an InfraredSignal instance.
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*
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* @param[in,out] signal pointer to the instance to be deleted.
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*/
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void infrared_signal_free(InfraredSignal* signal);
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/**
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* @brief Test whether an InfraredSignal instance holds a raw signal.
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*
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* @param[in] signal pointer to the instance to be tested.
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* @returns true if the instance holds a raw signal, false otherwise.
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*/
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bool infrared_signal_is_raw(const InfraredSignal* signal);
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/**
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* @brief Test whether an InfraredSignal instance holds any signal.
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*
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* @param[in] signal pointer to the instance to be tested.
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* @returns true if the instance holds raw signal, false otherwise.
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*/
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bool infrared_signal_is_valid(const InfraredSignal* signal);
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/**
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* @brief Set an InfraredInstance to hold the signal from another one.
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*
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* Any instance's previous contents will be automatically deleted before
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* copying the source instance's contents.
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*
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* @param[in,out] signal pointer to the destination instance.
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* @param[in] other pointer to the source instance.
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*/
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void infrared_signal_set_signal(InfraredSignal* signal, const InfraredSignal* other);
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/**
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* @brief Set an InfraredInstance to hold a raw signal.
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*
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* Any instance's previous contents will be automatically deleted before
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* copying the raw signal.
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*
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* After this call, infrared_signal_is_raw() will return true.
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*
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* @param[in,out] signal pointer to the destination instance.
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* @param[in] timings pointer to an array containing the raw signal timings.
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* @param[in] timings_size number of elements in the timings array.
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* @param[in] frequency signal carrier frequency, in Hertz.
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* @param[in] duty_cycle signal duty cycle, fraction between 0 and 1.
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*/
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void infrared_signal_set_raw_signal(
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InfraredSignal* signal,
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const uint32_t* timings,
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size_t timings_size,
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uint32_t frequency,
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float duty_cycle);
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/**
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* @brief Get the raw signal held by an InfraredSignal instance.
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*
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* @warning the instance MUST hold a *raw* signal, otherwise undefined behaviour will occur.
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*
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* @param[in] signal pointer to the instance to be queried.
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* @returns pointer to the raw signal structure held by the instance.
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*/
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const InfraredRawSignal* infrared_signal_get_raw_signal(const InfraredSignal* signal);
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/**
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* @brief Set an InfraredInstance to hold a parsed signal.
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*
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* Any instance's previous contents will be automatically deleted before
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* copying the raw signal.
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*
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* After this call, infrared_signal_is_raw() will return false.
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*
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* @param[in,out] signal pointer to the destination instance.
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* @param[in] message pointer to the message containing the parsed signal.
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*/
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void infrared_signal_set_message(InfraredSignal* signal, const InfraredMessage* message);
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/**
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* @brief Get the parsed signal held by an InfraredSignal instance.
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*
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* @warning the instance MUST hold a *parsed* signal, otherwise undefined behaviour will occur.
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*
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* @param[in] signal pointer to the instance to be queried.
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* @returns pointer to the parsed signal structure held by the instance.
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*/
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const InfraredMessage* infrared_signal_get_message(const InfraredSignal* signal);
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/**
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* @brief Read a signal and its name from a FlipperFormat file into an InfraredSignal instance.
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*
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* The file must be allocated and open prior to this call. The seek position determines
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* which signal will be read (if there is more than one in the file). Calling this function
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* repeatedly will result in all signals in the file to be read until no more are left.
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*
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* @param[in,out] signal pointer to the instance to be read into.
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* @param[in,out] ff pointer to the FlipperFormat file instance to read from.
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* @param[out] name pointer to the string to hold the signal name. Must be properly allocated.
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* @returns true if a signal was successfully read, false otherwise (e.g. no more signals to read).
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*/
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bool infrared_signal_read(InfraredSignal* signal, FlipperFormat* ff, FuriString* name);
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/**
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* @brief Read a signal name from a FlipperFormat file.
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*
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* Same behaviour as infrared_signal_read(), but only the name is read.
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*
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* @param[in,out] ff pointer to the FlipperFormat file instance to read from.
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* @param[out] name pointer to the string to hold the signal name. Must be properly allocated.
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* @returns true if a signal name was successfully read, false otherwise (e.g. no more signals to read).
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*/
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bool infrared_signal_read_name(FlipperFormat* ff, FuriString* name);
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/**
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* @brief Read a signal from a FlipperFormat file.
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*
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* Same behaviour as infrared_signal_read(), but only the body is read.
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*
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* @param[in,out] ff pointer to the FlipperFormat file instance to read from.
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* @param[out] body pointer to the InfraredSignal instance to hold the signal body. Must be properly allocated.
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* @returns true if a signal body was successfully read, false otherwise (e.g. syntax error).
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*/
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bool infrared_signal_read_body(InfraredSignal* signal, FlipperFormat* ff);
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/**
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* @brief Read a signal with a particular name from a FlipperFormat file into an InfraredSignal instance.
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*
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* This function will look for a signal with the given name and if found, attempt to read it.
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* Same considerations apply as to infrared_signal_read().
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*
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* @param[in,out] signal pointer to the instance to be read into.
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* @param[in,out] ff pointer to the FlipperFormat file instance to read from.
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* @param[in] name pointer to a zero-terminated string containing the requested signal name.
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* @returns true if a signal was found and successfully read, false otherwise (e.g. the signal was not found).
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*/
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bool infrared_signal_search_by_name_and_read(
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InfraredSignal* signal,
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FlipperFormat* ff,
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const char* name);
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/**
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* @brief Read a signal with a particular index from a FlipperFormat file into an InfraredSignal instance.
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*
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* This function will look for a signal with the given index and if found, attempt to read it.
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* Same considerations apply as to infrared_signal_read().
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*
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* @param[in,out] signal pointer to the instance to be read into.
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* @param[in,out] ff pointer to the FlipperFormat file instance to read from.
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* @param[in] index the requested signal index.
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* @returns true if a signal was found and successfully read, false otherwise (e.g. the signal was not found).
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*/
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bool infrared_signal_search_by_index_and_read(
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InfraredSignal* signal,
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FlipperFormat* ff,
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size_t index);
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/**
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* @brief Save a signal contained in an InfraredSignal instance to a FlipperFormat file.
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*
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* The file must be allocated and open prior to this call. Additionally, an appropriate header
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* must be already written into the file.
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*
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* @param[in] signal pointer to the instance holding the signal to be saved.
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* @param[in,out] ff pointer to the FlipperFormat file instance to write to.
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* @param[in] name pointer to a zero-terminated string contating the name of the signal.
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*/
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bool infrared_signal_save(const InfraredSignal* signal, FlipperFormat* ff, const char* name);
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/**
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* @brief Transmit a signal contained in an InfraredSignal instance.
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*
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* The transmission happens once per call using the built-in hardware (via HAL calls).
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*
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* @param[in] signal pointer to the instance holding the signal to be transmitted.
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*/
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void infrared_signal_transmit(const InfraredSignal* signal);
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