47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#pragma once
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/* Shared HID mixer protocol (firmware + host) */
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#define AUSIO_USB_VID 0x2E8Au
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#define AUSIO_USB_PID 0xA541u
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#define AUSIO_REPORT_ID_INPUT 1
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#define AUSIO_REPORT_ID_OUTPUT 2
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#define AUSIO_INPUT_SIZE 8 /* including report id */
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#define AUSIO_OUTPUT_SIZE 64 /* including report id */
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#define AUSIO_FLAG_E1_SW 0x01u
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#define AUSIO_FLAG_E2_SW 0x02u
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#define AUSIO_NAME_CHARS 12
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/* vol + peak + name[12] (name zero-padded, no extra NUL byte) */
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#define AUSIO_SLOT_SIZE (1 + 1 + AUSIO_NAME_CHARS)
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#define AUSIO_MAX_VISIBLE 4
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/* report_id + count + selected + master_vol + page + n_vis + master_peak */
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#define AUSIO_HDR_SIZE 7
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#if (AUSIO_HDR_SIZE + AUSIO_MAX_VISIBLE * AUSIO_SLOT_SIZE) > AUSIO_OUTPUT_SIZE
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#error protocol packing overflow
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#endif
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/*
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* Input report (device -> host), 8 bytes:
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* [0] report_id = 1
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* [1] enc1_delta int8
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* [2] enc2_delta int8
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* [3] flags
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* [4] pot 0..100
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* [5..7] reserved
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*
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* Output report (host -> device), 64 bytes:
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* [0] report_id = 2
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* [1] session_count
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* [2] selected_index
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* [3] master_vol 0..100
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* [4] page_start
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* [5] n_visible (0..4)
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* [6] master_peak 0..100
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* [7..] slots: { uint8 vol; uint8 peak; char name[12]; } * n_visible
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*/
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