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nx_h264_ts_probe.nx

buildroot/runtime/nx_h264_ts_probe.nx

11384 B254 linesdepth 4pulls 5 transitivereach 0 importersview sourcekind probetopic h264

docs dependencies structs consts functions

about

nx_h264_ts_probe.nx -- STEP 0 decisive probe for the cam-poster build. Reads a real MPEG-TS cam recording, demuxes the video PES (reusing the proven nx_ts2fmp4 PAT->PMT->video-PID->ES logic), NAL-walks the elementary stream for SPS (type 7) + PPS (type 8), and reports the two facts that LOCK the decode path: PPS.entropy_coding_mode_flag (0=CAVLC, 1=CABAC) -> which entropy decoder PPS.transform_8x8_mode_flag (High-profile 8x8) -> which inverse transform plus SPS profile_idc/level/dims. main() is intentionally decomposed into small functions (nx_cc SIGSEGVs on an over-large function body). license_tier: ORIGINAL

dependencies 4 imports · 0 importers

imports: nx_syscalls.nxnx_h264_bits.nxnx_h264_sps.nxnx_h264_pps.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

structs

none

consts

13	const K_MAGIC_1024: i64 = 1024
15	const MAXSCAN: i64 = 8388608 // 8 MiB from head: covers the first IDR + its SPS/PPS

functions

17	func pp(s: *u8) -> i64 { var n: i64 = 0; while s[n] != (0 as u8) { n = n + 1 } sys_write(1, s, n); return 0 } called by 3: report_sps report_pps main calls 1: sys_write
18	func pn(v: i64) -> i64 called by 3: report_sps report_pps main calls 2: sys_mmap sys_write
33	func lb_bit(data: u8, len: i64, pos: i64) -> i64 called by 2: lb_bits lb_ue
40	func lb_bits(data: u8, len: i64, pos: i64, n: i64) -> i64 called by 2: lb_ue probe_parse_pps_full calls 1: lb_bit
46	func lb_ue(data: u8, len: i64, pos: i64) -> i64 called by 2: lb_se probe_parse_pps_full calls 2: lb_bit lb_bits
57	func lb_se(data: u8, len: i64, pos: i64) -> i64 called by 1: probe_parse_pps_full calls 1: lb_ue
66	func probe_more_rbsp(data: *u8, len: i64, curpos: i64) -> i64 called by 1: probe_parse_pps_full
83	func probe_parse_pps_full(rbsp: u8, len: i64, out: i64) -> i64 called by 1: report_pps calls 5: sys_mmap lb_ue lb_bits lb_se probe_more_rbsp
113	func read_head(path: u8, buf: u8) -> i64 called by 1: main calls 3: sys_openat_rd sys_read sys_close
129	func demux_video_es(filebuf: u8, total: i64, es: u8, pidout: *i64) -> i64 called by 1: main
177	func find_first_nal(es: u8, eslen: i64, want: i64, dst: u8, cap: i64) -> i64 called by 1: main
201	func nal_to_rbsp(nal: u8, nallen: i64, rbsp: u8) -> i64 called by 2: report_sps report_pps calls 1: nx_h264_unescape_rbsp
205	func report_sps(nal: *u8, nallen: i64) -> i64 called by 1: main calls 6: sys_mmap nal_to_rbsp nx_h264_parse_sps pp pn nx_h264_is_high
217	func report_pps(nal: *u8, nallen: i64) -> i64 called by 1: main calls 6: sys_mmap nal_to_rbsp nx_h264_parse_pps probe_parse_pps_full pp pn
233	func main(argc: i64, argv: *i64) -> i64 calls 8: pp sys_mmap read_head demux_video_es pn find_first_nal+2