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feat(cctv): add Houston TranStar camera pack

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Register the keyless TranStar snapshot catalog as a live CCTV source,
synthesize frame URLs from validated numeric camera ids, and keep the
nearest cameras to Houston's metro cores under the existing catalog ceiling.
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Matt Van Horn authored and Matt Van Horn committed 2026-10-16 18:26:01 -07:00
1 parent 1df2a272cf
commit 052435473e
12 files changed
+613 -2
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server/providers/cctv/constants.js
+31
View File
@@ -347,6 +347,37 @@ export const NYC_ANCHORS = [
{ lat: 40.5795, lon: -74.1502 }, // Staten Island
];
/** Houston TranStar cameras: one keyless JSON list for the metro (~1,000
* cameras with a numeric id). Frames are stills synthesized from that id on
* the city's snapshot host — never taken from the payload. The catalog is
* served as `application/javascript`; asking for `application/json` gets HTTP
* 406, so the loader accepts any media type. */
export const HOUSTON_CAMERAS_URL =
'https://traffic.houstontranstar.org/data/layers/cctvSnapshots_json.js';
/** The only origin Houston camera frames may come from. The catalog's `url`
* is a `showWin(...)` viewer helper and is ignored; the registered path is
* always this origin plus `/snapshots/cctv/<id>.jpg`. */
export const HOUSTON_IMAGE_ORIGIN = 'https://www.houstontranstar.org/';
export const HOUSTON_IMAGE_URL = (id) =>
`${HOUSTON_IMAGE_ORIGIN}snapshots/cctv/${id}.jpg`;
/** Numeric TranStar snapshot ids: 3–5 digits, no leading zero. Id `0` is a
* different (non-snapshot) camera class in the same list. */
export const HOUSTON_CAMERA_ID_RE = /^[1-9]\d{2,4}$/;
export const DEFAULT_HOUSTON_MAX_SOURCES = 250;
export const HOUSTON_MAX_CATALOG_BYTES = 4 * 1024 * 1024;
/** Ground-elevation prior in metres. The TranStar payload carries none, and
* Houston sits a few metres above sea level. */
export const HOUSTON_GROUND_ELEVATION_M = 15;
/** Downtown Houston (Main @ Texas): the primary prioritization anchor. */
export const HOUSTON_DOWNTOWN = { lat: 29.7604, lon: -95.3698 };
export const HOUSTON_ANCHORS = [
{ lat: 29.7604, lon: -95.3698 }, // Downtown
{ lat: 29.739, lon: -95.461 }, // Uptown / Galleria
{ lat: 29.71, lon: -95.398 }, // Texas Medical Center
{ lat: 29.9902, lon: -95.3368 }, // IAH
{ lat: 29.3013, lon: -94.7977 }, // Galveston
];
/** DelDOT CCTV: one keyless statewide JSON catalog; live video via RTMP-over-HTTP (rtmpt:80). */
export const DELDOT_CCTV_URL = 'https://tmc.deldot.gov/json/videocamera.json';
export const DEFAULT_DELDOT_MAX_SOURCES = 300;