- Protocol module: framed binary encoding for control requests/responses (ENUM_DEVICES, ENUM_CONTROLS, GET/SET_CONTROL, STREAM_OPEN/CLOSE) - video-node: scans /dev/media* and /dev/video*, serves V4L2 device topology and controls over TCP; uses UDP discovery for peer announce - query_cli: auto-discovers a node, queries devices and controls - protocol_cli: low-level protocol frame decoder for debugging - dev/web: Express 5 ESM web inspector — live SSE discovery picker, REST bridge to video-node, controls UI with sliders/selects/checkboxes - Makefile: sequential module builds before cli/node to fix make -j races - common.mk: add DEPFLAGS (-MMD -MP) for automatic header dependencies - All module Makefiles: split compile/link, generate .d dependency files - discovery: replace 100ms poll loop with pthread_cond_timedwait; respond to all announcements (not just new peers) for instant re-discovery - ENUM_DEVICES response: carry device_caps (V4L2_CAP_*) per video node so clients can distinguish capture nodes from metadata nodes Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
#pragma once
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#include <errno.h>
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typedef enum Error_Code {
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ERR_NONE = 0,
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ERR_SYSCALL = 1,
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ERR_INVALID = 2,
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ERR_NOT_FOUND = 3,
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} Error_Code;
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struct Syscall_Error_Detail {
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int err_no;
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};
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struct Invalid_Error_Detail {
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int config_line; /* source line number, or 0 if not applicable */
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const char *message; /* static string describing what was wrong */
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};
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struct App_Error {
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Error_Code code;
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const char *file;
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int line;
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union {
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struct Syscall_Error_Detail syscall;
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struct Invalid_Error_Detail invalid;
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} detail;
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};
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void app_error_print(struct App_Error *e);
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#define APP_OK \
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((struct App_Error){ .code = ERR_NONE })
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#define APP_IS_OK(e) \
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((e).code == ERR_NONE)
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#define APP_SYSCALL_ERROR() \
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((struct App_Error){ \
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.code = ERR_SYSCALL, \
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.file = __FILE__, \
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.line = __LINE__, \
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.detail = { .syscall = { .err_no = errno } }, \
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})
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#define APP_INVALID_ERROR() \
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((struct App_Error){ \
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.code = ERR_INVALID, \
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.file = __FILE__, \
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.line = __LINE__, \
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})
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#define APP_INVALID_ERROR_MSG(cfg_line, msg) \
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((struct App_Error){ \
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.code = ERR_INVALID, \
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.file = __FILE__, \
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.line = __LINE__, \
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.detail = { .invalid = { .config_line = (cfg_line), .message = (msg) } }, \
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})
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#define APP_NOT_FOUND_ERROR() \
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((struct App_Error){ \
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.code = ERR_NOT_FOUND, \
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.file = __FILE__, \
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.line = __LINE__, \
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})
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