61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
from flask import Flask, request, jsonify
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from flask_cors import CORS
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from PIL import Image
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import requests
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import io
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app = Flask(__name__)
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CORS(app)
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@app.route('/')
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def root():
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return 'ok'
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@app.route('/api/bitmap', methods=['POST'])
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def bitmap():
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if 'file' not in request.files:
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return jsonify({"error": "no file"}), 400
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file = request.files['file']
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if file.filename == '':
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return jsonify({"error": "no file"}), 400
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if not file.filename.lower().endswith('.png'):
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return jsonify({"error": "invalid file format"}), 400
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try:
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image_stream = io.BytesIO(file.read())
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img = Image.open(image_stream)
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img.save('test.png')
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print(img.tobytes())
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# 1. 確保尺寸符合你的硬體需求 (296x152)
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# 如果你的圖片不是這個尺寸，建議先 resize
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img = img.resize((296, 152)).convert('1').transpose(Image.Transpose.ROTATE_90).transpose(Image.Transpose.FLIP_LEFT_RIGHT)
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# 2. 直接獲取二進制數據 (Bit-packed)
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# Pillow '1' 模式的 tobytes() 會將 8 個像素縮成 1 個 byte
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raw_bits = img.tobytes()
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# 3. 組合 PBM P4 標頭與數據
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header = f'P4\n152 296\n'.encode('ascii')
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payload = header + raw_bits
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print(raw_bits)
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# 測試寫入檔案 (必須用 'wb' 模式)
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with open('test.pbm', mode='wb') as f:
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f.write(payload)
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# 4. 發送請求
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req = requests.put('http://172.16.0.130/api/tag',
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data=payload,
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headers={'Content-Type': 'image/x-portable-bitmap'})
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return jsonify({'message': 'success', 'bytes_sent': len(payload)})
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except Exception as e:
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return jsonify({"error": str(e)}), 500
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if __name__ == '__main__':
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app.run('0.0.0.0', port=80, debug=1)
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