Step 7.3: decode HLS TS segments to PCM (own TS demux + AAC decoder)

- main/decoder: MPEG-TS demux (packets reassembled across HTTP chunks,
  PAT -> PMT -> first ADTS-AAC PID, PES headers stripped) feeding the
  esp_audio_codec simple AAC decoder (ADTS, AAC-Plus enabled for HE-AAC
  v1/v2 variants). 7.3 only counts and logs PCM per segment.
- esp_audio_codec pinned to ~2.5.0: 2.6+ needs P4 rev >= 3 (this board
  is rev 1.3). Noted in CLAUDE.md, also for esp_audio_effects < 1.4.
- The library's combined TS decoder lost ~8% of the frames (segments
  decoded to 7.9-9.6 s, "decode error -1"); with the own demux every
  segment is sample exact: 441344 / 440320 frames = 10.008 / 9.985 s,
  matching EXTINF 10.0078 / 9.9846 (431 / 430 AAC frames), no errors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

This commit is contained in:

Ben Nicholson

2026-09-25 14:48:12 +10:00

parent 852c0ffa0f

commit 8a6cb53e3b

7 changed files with 207 additions and 3 deletions

									
										main/idf_component.yml
									
		+3
		
												View File
												
				@@ -0,0 +1,3 @@

				dependencies:

				  # 2.6+ uses P4 assembly that needs chip rev >= 3.0; this board is rev 1.3 (see CLAUDE.md).

				  espressif/esp_audio_codec: "~2.5.0"