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feedmill-recounter/app.py
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# app.py
"""Flask web UI for feedmill_recounter — port 9000."""
from __future__ import annotations
import os
from dotenv import load_dotenv
from flask import (
Flask, render_template, request, redirect,
url_for, send_file, jsonify,
)
import time as _time
from flask import Response
from werkzeug.utils import secure_filename
from pathlib import Path
from src.job import JobQueue
from src.model_registry import scan_models, scan_model_groups, ModelConfig
from src.preview import extract_thumbnail, extract_sample_frames
from src.zone_config import load_zone_config, list_zone_presets, build_static_roi, get_active_zone
load_dotenv()
app = Flask(__name__, template_folder="templates", static_folder="static")
app.config["SECRET_KEY"] = os.getenv("SECRET_KEY", "change-me")
app.config["MAX_CONTENT_LENGTH"] = 2 * 1024 * 1024 * 1024 # 2GB
MODELS_DIR = os.getenv("MODELS_DIR", "./models")
UPLOAD_DIR = os.getenv("UPLOAD_DIR", "./uploads")
OUTPUT_DIR = os.getenv("OUTPUT_DIR", "./output")
os.makedirs(UPLOAD_DIR, exist_ok=True)
os.makedirs(OUTPUT_DIR, exist_ok=True)
job_queue = JobQueue(output_dir=OUTPUT_DIR)
VIDEO_EXTENSIONS = ('.mp4', '.avi', '.mkv', '.mov', '.webm')
ZONES_PATH = os.getenv("ZONES_PATH", "./zones.json")
def _parse_model_configs(form):
"""Parse model selection from request form.
Returns:
(model_configs, class_filters) tuple.
"""
selected_stems = form.getlist("model_stems")
selected_models = form.getlist("models")
model_configs = []
class_filters = {}
if selected_stems:
groups = scan_model_groups(MODELS_DIR)
groups_by_stem = {g.stem: g for g in groups}
for stem in selected_stems:
if stem not in groups_by_stem:
continue
group = groups_by_stem[stem]
fmt = form.get(f"format_{stem}", group.default_format)
if fmt not in group.format_paths:
continue
model_configs.append(ModelConfig(
filename=os.path.basename(group.format_paths[fmt]),
path=group.format_paths[fmt],
stem=stem,
known_classes=list(group.known_classes),
))
filter_val = form.get(f"filter_{stem}", "")
if not filter_val or filter_val in ("default",):
pass
elif filter_val == "all":
class_filters[stem] = None
else:
class_filters[stem] = filter_val.split(",")
elif selected_models:
models = scan_models(MODELS_DIR)
by_name = {m.filename: m for m in models}
for name in selected_models:
if name in by_name:
model_configs.append(by_name[name])
filter_val = form.get(f"filter_{name}", "")
if not filter_val or filter_val in ("default",):
pass
elif filter_val == "all":
class_filters[name] = None
else:
class_filters[name] = filter_val.split(",")
return model_configs, class_filters
@app.template_filter("basename")
def basename_filter(path):
"""Extract filename from path for templates."""
return os.path.basename(path)
@app.route("/")
def index():
model_groups = scan_model_groups(MODELS_DIR)
return render_template("index.html", model_groups=model_groups, models_dir=MODELS_DIR)
@app.route("/upload", methods=["POST"])
def upload():
video = request.files.get("video")
if not video or not video.filename:
return "No video uploaded", 400
safe_name = secure_filename(video.filename)
if not safe_name or not safe_name.lower().endswith(VIDEO_EXTENSIONS):
return "Invalid video file type", 400
model_configs, class_filters = _parse_model_configs(request.form)
if not model_configs:
return "No models selected", 400
video_path = os.path.join(UPLOAD_DIR, safe_name)
base, ext = os.path.splitext(video_path)
n = 1
while os.path.exists(video_path):
video_path = f"{base}_{n}{ext}"
n += 1
video.save(video_path)
zone_mode = request.form.get("zone_mode", "dynamic")
fixed_zone = None
zone_preset = ""
if zone_mode == "fixed" and os.path.isfile(ZONES_PATH):
preset_name = request.form.get("zone_preset", "")
zone = get_active_zone(ZONES_PATH, preset_name or None)
if zone:
import cv2
cap = cv2.VideoCapture(video_path)
vw = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
vh = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
cap.release()
fixed_zone = build_static_roi(zone, vw, vh)
zone_preset = preset_name or "default"
job = job_queue.add_job(
video_path=video_path,
model_configs=model_configs,
class_filters=class_filters,
zone_mode=zone_mode,
fixed_zone=fixed_zone,
zone_preset=zone_preset,
)
return redirect(url_for("status", job_id=job.job_id))
@app.route("/upload/reuse", methods=["POST"])
def upload_reuse():
"""Re-analyze an existing uploaded video."""
video_path = request.form.get("video_path", "")
if not video_path or not os.path.isfile(video_path):
return "Video not found", 400
model_configs, class_filters = _parse_model_configs(request.form)
if not model_configs:
return "No models selected", 400
zone_mode = request.form.get("zone_mode", "dynamic")
fixed_zone = None
zone_preset = ""
if zone_mode == "fixed" and os.path.isfile(ZONES_PATH):
preset_name = request.form.get("zone_preset", "")
zone = get_active_zone(ZONES_PATH, preset_name or None)
if zone:
import cv2
cap = cv2.VideoCapture(video_path)
vw = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
vh = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
cap.release()
fixed_zone = build_static_roi(zone, vw, vh)
zone_preset = preset_name or "default"
job = job_queue.add_job(
video_path=video_path,
model_configs=model_configs,
class_filters=class_filters,
zone_mode=zone_mode,
fixed_zone=fixed_zone,
zone_preset=zone_preset,
)
return redirect(url_for("status", job_id=job.job_id))
@app.route("/status/<job_id>")
def status(job_id):
job = job_queue.get_job(job_id)
if job is None:
return "Job not found", 404
return render_template("status.html", job=job)
@app.route("/jobs")
def jobs_list():
jobs = job_queue.list_jobs()
return render_template("jobs.html", jobs=jobs)
@app.route("/download/<job_id>/<filename>")
def download(job_id, filename):
job = job_queue.get_job(job_id)
if job is None:
return "Job not found", 404
safe_filename = secure_filename(filename)
output_dir_abs = os.path.abspath(job.output_dir)
file_path = os.path.abspath(os.path.join(job.output_dir, safe_filename))
if os.path.commonpath([output_dir_abs, file_path]) != output_dir_abs:
return "File not found", 404
if not os.path.isfile(file_path):
return "File not found", 404
return send_file(file_path, as_attachment=True)
@app.route("/api/videos")
def api_videos():
"""List previously uploaded videos."""
videos = []
for f in sorted(Path(UPLOAD_DIR).iterdir(), key=lambda x: x.stat().st_mtime, reverse=True):
if f.is_file() and f.suffix.lower() in VIDEO_EXTENSIONS:
videos.append({
"filename": f.name,
"size": f.stat().st_size,
"mtime": f.stat().st_mtime,
"path": str(f),
})
return jsonify(videos)
@app.route("/api/videos/<filename>", methods=["DELETE"])
def api_delete_video(filename):
"""Delete an uploaded video."""
safe = secure_filename(filename)
if not safe or not safe.lower().endswith(VIDEO_EXTENSIONS):
return jsonify({"error": "invalid filename"}), 400
file_path = os.path.join(UPLOAD_DIR, safe)
if not os.path.isfile(file_path):
return jsonify({"error": "not found"}), 404
os.remove(file_path)
return jsonify({"status": "deleted"})
@app.route("/api/models")
def api_models():
groups = scan_model_groups(MODELS_DIR)
return jsonify([
{
"stem": g.stem,
"formats": g.formats,
"format_paths": g.format_paths,
"known_classes": g.known_classes,
"default_format": g.default_format,
}
for g in groups
])
@app.route("/api/zones")
def api_zones():
"""Return zone presets from zones.json."""
if not os.path.isfile(ZONES_PATH):
return jsonify([])
try:
presets = list_zone_presets(ZONES_PATH)
return jsonify(presets)
except Exception:
return jsonify([])
@app.route("/api/jobs")
def api_jobs():
return jsonify([{
"job_id": j.job_id,
"status": j.status.name,
"progress": j.progress,
"video_path": os.path.basename(j.video_path),
"results": [
{
"model": r.model_name,
"loading": r.loading_count,
"unloading": r.unloading_count,
"net": r.net_count,
}
for r in j.results
],
} for j in job_queue.list_jobs()])
@app.route("/api/jobs/<job_id>/cancel", methods=["POST"])
def api_cancel_job(job_id):
"""Cancel a running or pending job."""
success = job_queue.cancel_job(job_id)
if success:
return jsonify({"status": "cancelled"})
job = job_queue.get_job(job_id)
if job is None:
return jsonify({"error": "not found"}), 404
return jsonify({"error": "cannot cancel job in state " + job.status.name}), 400
@app.route("/api/jobs/active")
def api_active_jobs():
"""Return count of running/pending jobs."""
active = [j for j in job_queue.list_jobs() if j.status.name in ('RUNNING', 'PENDING')]
return jsonify({
"count": len(active),
"jobs": [{"job_id": j.job_id, "status": j.status.name, "video": os.path.basename(j.video_path)} for j in active],
})
@app.route("/api/jobs/<job_id>", methods=["DELETE"])
def api_delete_job(job_id):
"""Delete a completed/failed/cancelled job."""
success = job_queue.delete_job(job_id)
if success:
return jsonify({"status": "deleted"})
job = job_queue.get_job(job_id)
if job is None:
return jsonify({"error": "not found"}), 404
return jsonify({"error": "cannot delete job in state " + job.status.name}), 400
@app.route("/api/jobs/<job_id>/preview", methods=["PUT"])
def api_toggle_preview(job_id):
"""Toggle live preview on/off for a running job."""
job = job_queue.get_job(job_id)
if job is None:
return jsonify({"error": "not found"}), 404
data = request.get_json(silent=True) or {}
enabled = data.get("enabled", True)
with job_queue._lock:
job.preview_enabled = enabled
return jsonify({"status": "ok", "preview_enabled": enabled})
@app.route("/api/jobs/<job_id>")
def api_job_detail(job_id):
job = job_queue.get_job(job_id)
if job is None:
return jsonify({"error": "not found"}), 404
return jsonify({
"job_id": job.job_id,
"status": job.status.name,
"progress": job.progress,
"current_model": job.current_model,
"results": [
{
"model_name": r.model_name,
"loading_count": r.loading_count,
"unloading_count": r.unloading_count,
"net_count": r.net_count,
"batch_count": r.batch_count,
"frame_count": r.frame_count,
"duration_seconds": r.duration_seconds,
"output_path": os.path.basename(r.output_path) if r.output_path else None,
}
for r in job.results
],
"error": job.error,
"live_fps": job.live_fps,
"live_loading": job.live_loading,
"live_unloading": job.live_unloading,
"live_frame": job.live_frame,
})
@app.route("/preview/thumb/<job_id>")
def preview_thumb(job_id):
"""Serve a thumbnail JPEG for a job's video (cached in job output_dir)."""
job = job_queue.get_job(job_id)
if job is None:
return "Job not found", 404
thumb_path = os.path.join(job.output_dir, "thumbnail.jpg")
if not os.path.isfile(thumb_path):
try:
extract_thumbnail(job.video_path, thumb_path)
except (FileNotFoundError, RuntimeError):
return "Could not generate thumbnail", 404
return send_file(thumb_path, mimetype="image/jpeg")
@app.route("/api/jobs/<job_id>/samples")
def api_job_samples(job_id):
"""Return JSON array of sample frame paths (extract if not cached)."""
job = job_queue.get_job(job_id)
if job is None:
return jsonify({"error": "not found"}), 404
samples_dir = os.path.join(job.output_dir, "samples")
cache_file = os.path.join(samples_dir, ".cached")
if not os.path.isfile(cache_file):
try:
paths = extract_sample_frames(job.video_path, samples_dir)
with open(cache_file, "w") as f:
f.write("\n".join(paths))
except (FileNotFoundError, RuntimeError):
return jsonify({"error": "could not generate samples"}), 404
else:
with open(cache_file) as f:
paths = [line.strip() for line in f if line.strip()]
rel_paths = [os.path.relpath(p, job.output_dir) for p in paths]
return jsonify(rel_paths)
@app.route("/api/preview/<job_id>")
def api_preview(job_id):
job = job_queue.get_job(job_id)
if job is None:
return jsonify({"error": "not found"}), 404
preview_path = job.preview_path
if not preview_path:
return jsonify({"error": "no preview path"}), 404
def generate():
consecutive_fails = 0
MAX_FAILS = 30
while True:
try:
with open(preview_path, "rb") as f:
jpeg = f.read()
consecutive_fails = 0
yield (b"--frame\r\n"
b"Content-Type: image/jpeg\r\n\r\n" + jpeg + b"\r\n")
except FileNotFoundError:
consecutive_fails += 1
if consecutive_fails >= MAX_FAILS:
return
_time.sleep(1.0)
continue
except Exception:
consecutive_fails += 1
if consecutive_fails >= MAX_FAILS:
return
_time.sleep(0.5)
continue
_time.sleep(0.05)
return Response(generate(), mimetype="multipart/x-mixed-replace; boundary=frame")
def main():
host = os.getenv("WEB_HOST", "0.0.0.0")
port = int(os.getenv("WEB_PORT", "9000"))
debug = os.getenv("FLASK_DEBUG", "false").lower() == "true"
print(f"Feedmill Recounter web UI: http://{host}:{port}")
app.run(host=host, port=port, debug=debug)
if __name__ == "__main__":
main()