init commit

sender/stream_av.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+# CHT Sender: muxed video + audio over TCP/mpegts
+# Source: Wayland (kmsgrab) + desktop audio + webcam mic
+# Usage: ./stream_av.sh [RECEIVER_IP] [PORT]
+#
+# Requires: sudo for kmsgrab, PulseAudio for audio capture
+# Audio is non-blocking (monitor source = passive tap)
+
+set -uo pipefail
+
+RECEIVER_IP="${1:-mcrndeb}"
+PORT="${2:-4444}"
+
+# Let root access the user's PulseAudio session
+REAL_UID="${SUDO_UID:-$(id -u)}"
+export PULSE_SERVER="unix:/run/user/${REAL_UID}/pulse/native"
+
+# Find the default sink's monitor source (desktop audio - what you hear)
+MONITOR=$(PULSE_SERVER="$PULSE_SERVER" pactl info 2>/dev/null | grep "Default Sink" | awk '{print $3}').monitor
+# Webcam mic - find by partial match (serial number varies)
+WEBCAM_MIC=$(PULSE_SERVER="$PULSE_SERVER" pactl list short sources 2>/dev/null | grep -i "C922" | awk '{print $2}' || true)
+
+echo "Monitor source: $MONITOR"
+echo "Webcam mic: ${WEBCAM_MIC:-not found}"
+echo "Streaming to: ${RECEIVER_IP}:${PORT}"
+
+if [ -n "$WEBCAM_MIC" ]; then
+    echo "Webcam mic found, mixing desktop + mic"
+    # Two pulse inputs: desktop monitor + webcam mic, mixed into one audio stream
+    exec ffmpeg \
+        -init_hw_device drm=drm:/dev/dri/card0 \
+        -init_hw_device vaapi=va@drm \
+        -device /dev/dri/card0 -f kmsgrab -i - \
+        -f pulse -i "$MONITOR" \
+        -f pulse -i "$WEBCAM_MIC" \
+        -filter_complex "[1:a][2:a]amix=inputs=2:duration=longest[aout]" \
+        -map 0:v -map "[aout]" \
+        -vf 'hwmap=derive_device=vaapi,scale_vaapi=w=1920:h=1080:format=nv12' \
+        -c:v h264_vaapi -qp 20 -g 30 -keyint_min 30 -bf 0 \
+        -c:a aac -b:a 128k \
+        -flush_packets 1 -fflags nobuffer -muxdelay 0 -muxpreload 0 \
+        -f mpegts "tcp://${RECEIVER_IP}:${PORT}" \
+        -hide_banner
+else
+    echo "No webcam mic, desktop audio only"
+    exec ffmpeg \
+        -init_hw_device drm=drm:/dev/dri/card0 \
+        -init_hw_device vaapi=va@drm \
+        -device /dev/dri/card0 -f kmsgrab -i - \
+        -f pulse -i "$MONITOR" \
+        -vf 'hwmap=derive_device=vaapi,scale_vaapi=w=1920:h=1080:format=nv12' \
+        -c:v h264_vaapi -qp 20 -g 30 -keyint_min 30 -bf 0 \
+        -c:a aac -b:a 128k \
+        -flush_packets 1 -fflags nobuffer -muxdelay 0 -muxpreload 0 \
+        -f mpegts "tcp://${RECEIVER_IP}:${PORT}" \
+        -hide_banner
+fi