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2026-04-17 14:06:18 +02:00
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 #!/usr/bin/env python3
 """
 Serveur Flask - Stream vidéo Raspberry Pi HQ Camera M12
 Compatible Raspberry Pi 4 et 5 avec Picamera2
 """
 import io
 import threading
 import time
 from flask import Flask, Response, render_template_string
 from picamera2 import Picamera2
 from picamera2.encoders import JpegEncoder
 from picamera2.outputs import FileOutput
 # ─── Configuration ────────────────────────────────────────────────────────────
 RESOLUTION = (1280, 720)   # Résolution du stream (largeur, hauteur)
 FRAMERATE  = 30            # Images par seconde
 QUALITY    = 85            # Qualité JPEG (1-100)
 HOST       = "0.0.0.0"    # Ecoute sur toutes les interfaces réseau
 PORT       = 5000
 # ─── Buffer de frames thread-safe ─────────────────────────────────────────────
 class StreamOutput(io.BufferedIOBase):
    def __init__(self):
        self.frame = None
        self.condition = threading.Condition()
    def write(self, buf):
        with self.condition:
            self.frame = buf
            self.condition.notify_all()
 # ─── Initialisation caméra ────────────────────────────────────────────────────
 picam2 = Picamera2()
 video_config = picam2.create_video_configuration(
    main={"size": RESOLUTION, "format": "RGB888"},
    controls={"FrameRate": FRAMERATE}
 )
 picam2.configure(video_config)
 output = StreamOutput()
 encoder = JpegEncoder(q=QUALITY)
 picam2.start_recording(encoder, FileOutput(output))
 print(f"[✓] Caméra démarrée ({RESOLUTION[0]}x{RESOLUTION[1]} @ {FRAMERATE}fps)")
 # ─── Générateur MJPEG ─────────────────────────────────────────────────────────
 def generate_frames():
    """Génère un flux MJPEG frame par frame."""
    while True:
        with output.condition:
            output.condition.wait()
            frame = output.frame
        yield (
            b"--frame\r\n"
            b"Content-Type: image/jpeg\r\n\r\n" + frame + b"\r\n"
        )
 # ─── Interface HTML ───────────────────────────────────────────────────────────
 HTML_PAGE = """
 <!DOCTYPE html>
 <html lang="fr">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Pi Camera Stream</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            background: #0a0a0a;
            color: #e0e0e0;
            font-family: 'Courier New', monospace;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
        }
        header {
            text-align: center;
        }
        h1 {
            font-size: 1.2rem;
            letter-spacing: 0.3em;
            text-transform: uppercase;
            color: #00ff88;
        }
        .subtitle {
            font-size: 0.75rem;
            color: #555;
            letter-spacing: 0.15em;
            margin-top: 4px;
        }
        .stream-container {
            position: relative;
            border: 1px solid #1a1a1a;
            box-shadow: 0 0 40px rgba(0, 255, 136, 0.05);
        }
        .stream-container::before {
            content: '● REC';
            position: absolute;
            top: 12px;
            left: 12px;
            font-size: 0.65rem;
            color: #ff4444;
            letter-spacing: 0.1em;
            z-index: 10;
            animation: blink 1.5s infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50%       { opacity: 0.2; }
        }
        img#stream {
            display: block;
            max-width: 90vw;
            max-height: 75vh;
        }
        footer {
            font-size: 0.7rem;
            color: #333;
            letter-spacing: 0.1em;
        }
        footer span {
            color: #00ff88;
        }
    </style>
 </head>
 <body>
    <header>
        <h1>Raspberry Pi Camera</h1>
        <p class="subtitle">HQ Camera M12 — Live Stream</p>
    </header>
    <div class="stream-container">
        <img id="stream" src="/video_feed" alt="Camera stream">
    </div>
    <footer>
        Résolution <span>{{ width }}×{{ height }}</span> —
        Qualité <span>{{ quality }}%</span>
    </footer>
 </body>
 </html>
 """
 # ─── Application Flask ────────────────────────────────────────────────────────
 app = Flask(__name__)
@app.route("/")
 def index():
    return render_template_string(
        HTML_PAGE,
        width=RESOLUTION[0],
        height=RESOLUTION[1],
        quality=QUALITY
    )
@app.route("/video_feed")
 def video_feed():
    """Endpoint du flux MJPEG."""
    return Response(
        generate_frames(),
        mimetype="multipart/x-mixed-replace; boundary=frame"
    )
 # ─── Lancement ────────────────────────────────────────────────────────────────
 if __name__ == "__main__":
    try:
        print(f"[✓] Serveur démarré → http://{HOST}:{PORT}")
        print(f"    Accès local  : http://localhost:{PORT}")
        print(f"    Accès réseau : http://<IP_DU_PI>:{PORT}")
        app.run(host=HOST, port=PORT, threaded=True)
    except KeyboardInterrupt:
        print("\n[!] Arrêt du serveur...")
    finally:
        picam2.stop_recording()
        picam2.close()
        print("[✓] Caméra arrêtée proprement.")