52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
// gKeyMapper daemon - raw HID access to the keyboard's vendor interface.
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//
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// Uses the kernel's hidraw interface instead of libusb: hidraw provides
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// non-exclusive access, so other tools (OpenRGB, etc.) can talk to the same
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// device at the same time. The kernel driver (usbhid) stays attached.
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#ifndef GKEYMAPPER_DAEMON_GKEY_DEVICE_H
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#define GKEYMAPPER_DAEMON_GKEY_DEVICE_H
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#include <cstdint>
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#include "device_tables.h"
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namespace gkeymapper::daemon {
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class GKeyDevice {
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public:
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GKeyDevice() = default;
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~GKeyDevice();
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GKeyDevice(const GKeyDevice&) = delete;
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GKeyDevice& operator=(const GKeyDevice&) = delete;
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// Finds a supported keyboard and opens its hidraw node. Returns false (and
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// logs) if none is found.
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//
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// `quiet` silences the "cannot use the keyboard" lines only, which the
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// hot-plug retry uses so an unplugged keyboard does not flood the journal
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// with one line every retry.
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bool open(bool quiet = false);
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void close();
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bool is_open() const { return fd_ >= 0; }
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// Sends the "stop mapping G-keys to F-keys" command if the model needs it.
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bool disable_binding();
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// Reads one interrupt report. Returns the number of bytes (>0), 0 on
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// timeout, or a negative value on error.
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int read_report(uint8_t* buffer, int length, int timeoutMs);
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const DeviceProfile* profile() const { return profile_; }
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private:
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int find_hidraw_node(uint16_t vendor, uint16_t product);
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int fd_ = -1;
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const DeviceProfile* profile_ = nullptr;
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};
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} // namespace gkeymapper::daemon
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#endif // GKEYMAPPER_DAEMON_GKEY_DEVICE_H
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