#!/usr/bin/env bash # ffmpeg LGPL, DÉCODAGE SEUL, pour « WebDiffusion Virtual Webcam » (docs/RD/VIRTUAL_WEBCAM.md §13 : LGPL, aucun # composant GPL ni nonfree — l'app ne fait que lire le programme du pcr : RTSP → H.264/HEVC (VideoToolbox) + Opus/AAC # → NV12 brut + PCM f32 sur deux sockets locales). Aucune bibliothèque tierce : tout est natif à ffmpeg. # # apps/wds-virtualcam/scripts/build-ffmpeg-lgpl.sh # build (~3 min sur M4 Pro) # apps/wds-virtualcam/scripts/build-ffmpeg-lgpl.sh --check # vérifie le binaire présent # # Sortie : apps/wds-virtualcam/build/ffmpeg/{ffmpeg,ffprobe} (+ THIRD-PARTY-LICENSES/ : LGPL v2.1 + SOURCES.txt), embarqué # dans l'app par scripts/build.sh. Obligation LGPL : texte de licence + sources correspondantes publiées # (même lot que le pcr : scripts/package/publish-ffmpeg-sources.sh, docs/DEPLOYMENT.md § Licences tierces). set -euo pipefail ROOT="$(cd "$(dirname "$0")/.." && pwd)" OUT="$ROOT/build/ffmpeg" WORK="$ROOT/build/ffmpeg-build" JOBS="$(sysctl -n hw.ncpu)" FFMPEG_VERSION="${FFMPEG_VERSION:-8.1.1}" # = version du pcr (scripts/package/build-ffmpeg-mac.sh) SRC_FFMPEG="https://ffmpeg.org/releases/ffmpeg-$FFMPEG_VERSION.tar.xz" # Les archives sont partagées avec le build du pcr quand elles existent déjà (même version). PCR_CACHE="$ROOT/../../resources/pack/.cache/ffmpeg-build/src" step() { echo "=== $(date +%H:%M:%S) $*"; } check_binary() { local bin="$OUT/ffmpeg" [ -x "$bin" ] || { echo "✗ $bin absent"; return 1; } [ -x "$OUT/ffprobe" ] || { echo "✗ ffprobe absent (la sonde de l'app l'utilise)"; return 1; } local lic; lic="$("$bin" -hide_banner -L 2>&1 | tr '\n' ' ')" echo "licence : $(echo "$lic" | grep -oi "GNU Lesser General Public License[^;]*; either version [0-9.]*" | head -1)" echo "$lic" | grep -qi "Lesser General Public License" || { echo "✗ pas LGPL"; return 1; } local conf; conf="$("$bin" -hide_banner -buildconf 2>&1)" echo "$conf" | grep -q -- "--enable-gpl" && { echo "✗ GPL activé"; return 1; } echo "$conf" | grep -q -- "--enable-nonfree" && { echo "✗ nonfree activé"; return 1; } local missing=0 decs encs protos fmts filts hw decs="$("$bin" -hide_banner -decoders 2>/dev/null)"; encs="$("$bin" -hide_banner -encoders 2>/dev/null)" protos="$("$bin" -hide_banner -protocols 2>/dev/null)"; fmts="$("$bin" -hide_banner -formats 2>/dev/null)" filts="$("$bin" -hide_banner -filters 2>/dev/null)"; hw="$("$bin" -hide_banner -hwaccels 2>/dev/null)" for dec in h264 hevc aac opus; do grep -q " $dec " <<<"$decs" || { echo "✗ décodeur manquant : $dec"; missing=1; }; done for enc in rawvideo pcm_f32le; do grep -q " $enc " <<<"$encs" || { echo "✗ encodeur manquant : $enc"; missing=1; }; done grep -q "libx264\|libsrt\|libopus" <<<"$encs$conf" && { echo "✗ bibliothèque tierce présente"; missing=1; } for pr in tcp rtp pipe; do grep -q " $pr " <<<" $protos " || grep -q "$pr" <<<"$protos" || { echo "✗ protocole manquant : $pr"; missing=1; }; done for mux in rtsp rawvideo f32le; do grep -qE "^ +[DEd ]+ +$mux( |$)" <<<"$fmts" || { echo "✗ format manquant : $mux"; missing=1; }; done for f in scale format aresample fps; do grep -q " $f " <<<"$filts" || { echo "✗ filtre manquant : $f"; missing=1; }; done grep -q "videotoolbox" <<<"$hw" || { echo "✗ hwaccel videotoolbox manquant"; missing=1; } if otool -L "$bin" | grep -qvE "^$bin:|/usr/lib/|/System/Library/"; then echo "⚠ dépendances hors système :"; otool -L "$bin" | grep -vE "^$bin:|/usr/lib/|/System/Library/"; missing=1; else echo "liaison : système seulement ✓"; fi [ "$missing" = 0 ] && echo "✓ ffmpeg $FFMPEG_VERSION LGPL décodage seul ($(du -h "$bin" | cut -f1))" return $missing } if [ "${1:-}" = "--check" ]; then check_binary; exit $?; fi mkdir -p "$WORK/src" "$OUT" export MACOSX_DEPLOYMENT_TARGET="${MACOSX_DEPLOYMENT_TARGET:-13.0}" # = l'app (extension caméra) ARCHIVE="$WORK/src/ffmpeg-$FFMPEG_VERSION.tar.xz" if [ ! -f "$ARCHIVE" ]; then if [ -f "$PCR_CACHE/ffmpeg-$FFMPEG_VERSION.tar.xz" ]; then cp "$PCR_CACHE/ffmpeg-$FFMPEG_VERSION.tar.xz" "$ARCHIVE"; else step "téléchargement"; curl -fsSL --retry 3 -o "$ARCHIVE.part" "$SRC_FFMPEG" && mv "$ARCHIVE.part" "$ARCHIVE"; fi fi [ -d "$WORK/src/ffmpeg-$FFMPEG_VERSION" ] || tar xf "$ARCHIVE" -C "$WORK/src" step "ffmpeg $FFMPEG_VERSION (LGPL, décodage seul)" FFMPEG_CONFIGURE=( --prefix="$WORK/prefix" --enable-static --disable-shared --disable-debug --disable-doc --disable-ffplay --disable-everything --enable-protocol=tcp,udp,rtp,file,pipe # RTSP = DEMUXER (rtsp), pas un protocole --enable-demuxer=rtsp,rtp,sdp,h264,hevc,aac,ogg,mov,mpegts --enable-parser=h264,hevc,aac,opus --enable-decoder=h264,hevc,aac,opus,pcm_s16le --enable-hwaccel=h264_videotoolbox,hevc_videotoolbox --enable-videotoolbox --enable-muxer=rawvideo,pcm_f32le,null # (nom configure du muxer « f32le ») --enable-encoder=rawvideo,pcm_f32le --enable-filter=scale,format,aresample,fps,aformat,anull,null,setpts,asetpts --enable-bsf=h264_mp4toannexb,hevc_mp4toannexb,aac_adtstoasc --disable-sdl2 --disable-xlib --disable-libxcb --disable-vulkan --disable-audiotoolbox --enable-neon --enable-runtime-cpudetect ) SRC="$WORK/src/ffmpeg-$FFMPEG_VERSION" (cd "$SRC" && make distclean >/dev/null 2>&1 || true) (cd "$SRC" && ./configure "${FFMPEG_CONFIGURE[@]}" > "$WORK/configure.log" 2>&1 || { tail -20 "$WORK/configure.log"; exit 1; }) (cd "$SRC" && make -j"$JOBS" > "$WORK/make.log" 2>&1 || { tail -30 "$WORK/make.log"; exit 1; }) for b in ffmpeg ffprobe; do cp "$SRC/$b" "$OUT/$b"; strip "$OUT/$b" 2>/dev/null || true; chmod +x "$OUT/$b"; done step "licences" LIC="$OUT/THIRD-PARTY-LICENSES"; rm -rf "$LIC"; mkdir -p "$LIC" cp "$SRC/COPYING.LGPLv2.1" "$LIC/ffmpeg-COPYING.LGPLv2.1" cp "$SRC/LICENSE.md" "$LIC/ffmpeg-LICENSE.md" cat > "$LIC/SOURCES.txt" <