feat: Add Raspberry Pi webcam capture and upload demo with install/uninstall scripts, config, and README.
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sebseb7
168
demo/capture-upload.sh
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168
demo/capture-upload.sh
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#!/bin/bash
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# capture-upload.sh - Capture from USB webcam and upload to PicUpper
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# For Raspberry Pi 3 with Logitech USB webcam
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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CONFIG_FILE="${SCRIPT_DIR}/picupper.conf"
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# ==============================================================================
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# Load Configuration
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# ==============================================================================
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if [[ ! -f "$CONFIG_FILE" ]]; then
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echo "ERROR: Configuration file not found: $CONFIG_FILE"
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echo "Please copy picupper.conf.example to picupper.conf and configure it."
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exit 1
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fi
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# shellcheck source=/dev/null
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source "$CONFIG_FILE"
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# Validate required settings
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if [[ -z "${API_KEY:-}" || "$API_KEY" == "your-api-key-here" ]]; then
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echo "ERROR: API_KEY not configured in $CONFIG_FILE"
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exit 1
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fi
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# Set defaults for optional settings
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API_URL="${API_URL:-https://dev.seedheads.de/picUploadApi/upload}"
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CAMERA_ID="${CAMERA_ID:-rpi-webcam}"
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VIDEO_DEVICE="${VIDEO_DEVICE:-/dev/video0}"
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RESOLUTION="${RESOLUTION:-1920x1080}"
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SKIP_FRAMES="${SKIP_FRAMES:-5}"
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TEMP_DIR="${TEMP_DIR:-/tmp}"
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LOG_FILE="${LOG_FILE:-/var/log/picupper.log}"
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TIMEOUT="${TIMEOUT:-30}"
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MAX_RETRIES="${MAX_RETRIES:-3}"
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RETRY_DELAY="${RETRY_DELAY:-5}"
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# ==============================================================================
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# Helper Functions
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# ==============================================================================
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log() {
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local timestamp
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timestamp=$(date '+%Y-%m-%d %H:%M:%S')
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echo "[$timestamp] $*" | tee -a "$LOG_FILE" 2>/dev/null || echo "[$timestamp] $*"
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}
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log_error() {
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log "ERROR: $*" >&2
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}
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cleanup() {
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rm -f "${TEMP_FILE:-}" 2>/dev/null || true
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}
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trap cleanup EXIT
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# ==============================================================================
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# Test Mode
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# ==============================================================================
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if [[ "${1:-}" == "--test" ]]; then
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echo "=== PicUpper Test Mode ==="
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echo "Config file: $CONFIG_FILE"
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echo "API URL: $API_URL"
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echo "Camera ID: $CAMERA_ID"
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echo "Video device: $VIDEO_DEVICE"
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echo "Resolution: $RESOLUTION"
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echo ""
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# Check video device
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if [[ ! -e "$VIDEO_DEVICE" ]]; then
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echo "❌ Video device not found: $VIDEO_DEVICE"
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echo " Available devices:"
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ls -la /dev/video* 2>/dev/null || echo " No video devices found"
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exit 1
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fi
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echo "✓ Video device exists: $VIDEO_DEVICE"
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# Check fswebcam
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if ! command -v fswebcam &>/dev/null; then
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echo "❌ fswebcam not installed. Run: sudo apt install fswebcam"
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exit 1
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fi
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echo "✓ fswebcam installed"
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# Try capture
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TEST_FILE="${TEMP_DIR}/picupper_test_$(date +%s).jpg"
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echo "Capturing test image to: $TEST_FILE"
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if fswebcam -d "$VIDEO_DEVICE" -r "$RESOLUTION" -S "$SKIP_FRAMES" --no-banner "$TEST_FILE" 2>/dev/null; then
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FILE_SIZE=$(stat -f%z "$TEST_FILE" 2>/dev/null || stat -c%s "$TEST_FILE" 2>/dev/null)
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echo "✓ Capture successful: $TEST_FILE (${FILE_SIZE} bytes)"
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echo ""
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echo "To view the image: gpicview $TEST_FILE"
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else
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echo "❌ Capture failed. Check webcam connection and permissions."
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exit 1
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fi
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exit 0
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fi
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# ==============================================================================
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# Main Capture & Upload
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# ==============================================================================
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TEMP_FILE="${TEMP_DIR}/picupper_${CAMERA_ID}_$(date +%s).jpg"
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# Check video device
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if [[ ! -e "$VIDEO_DEVICE" ]]; then
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log_error "Video device not found: $VIDEO_DEVICE"
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exit 1
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fi
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# Capture image
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log "Capturing from $VIDEO_DEVICE ($RESOLUTION)"
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if ! fswebcam -d "$VIDEO_DEVICE" -r "$RESOLUTION" -S "$SKIP_FRAMES" --no-banner "$TEMP_FILE" 2>/dev/null; then
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log_error "Capture failed"
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exit 1
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fi
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FILE_SIZE=$(stat -c%s "$TEMP_FILE" 2>/dev/null || echo "unknown")
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log "Captured: $TEMP_FILE ($FILE_SIZE bytes)"
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# Upload with retry
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upload_success=false
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attempt=1
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while [[ $attempt -le $MAX_RETRIES ]]; do
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log "Upload attempt $attempt/$MAX_RETRIES"
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HTTP_RESPONSE=$(curl -s -w "\n%{http_code}" \
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--max-time "$TIMEOUT" \
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-X POST \
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-H "X-API-Key: $API_KEY" \
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-F "image=@$TEMP_FILE" \
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-F "cameraId=$CAMERA_ID" \
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"$API_URL" 2>/dev/null) || true
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HTTP_CODE=$(echo "$HTTP_RESPONSE" | tail -n1)
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RESPONSE_BODY=$(echo "$HTTP_RESPONSE" | sed '$d')
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if [[ "$HTTP_CODE" == "200" ]]; then
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log "Upload successful (HTTP $HTTP_CODE)"
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upload_success=true
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break
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else
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log_error "Upload failed (HTTP $HTTP_CODE): $RESPONSE_BODY"
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if [[ $attempt -lt $MAX_RETRIES ]]; then
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log "Retrying in $RETRY_DELAY seconds..."
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sleep "$RETRY_DELAY"
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fi
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fi
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((attempt++))
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done
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if [[ "$upload_success" != "true" ]]; then
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log_error "All upload attempts failed"
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exit 1
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fi
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log "Done"
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