- main/hls: task active while source.mode is hls/auto and hls_url is
set. esp_http_client over HTTPS (IDF certificate bundle), redirects
followed (max 5), streamed reads in 4 KB chunks to a sink callback.
- Master playlist: highest BANDWIDTH variant; URL resolution for
absolute, host-relative and path-relative references; CRLF tolerant.
- Media playlist: TARGETDURATION, MEDIA-SEQUENCE, segments; start 3
segments behind the live edge, fetch each new one in order, skip ahead
if the window moved past us, reload after target/2 when nothing is new.
- Verified with Triple J Hottest (ABC, Akamai): 252 kbit/s AAC-LC
variant chosen, 3 back-fill segments then one new ~10 s segment at a
time, ~303 KB in ~1.25 s each; heap 439 KB, PSRAM 31.9 MB free.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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