feat: reggaeton production system with intelligent sample selection and FLP generation
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renato97
199
mcp/tests/test_sysex_loopback.py
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199
mcp/tests/test_sysex_loopback.py
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"""
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Phase 0: SysEx Loopback Validation Test.
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Tests whether MIDI SysEx messages can travel through the Windows MIDI Services
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loopback port "FL_MCP" from the MCP server to the FL Studio controller script.
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Usage:
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python test_sysex_loopback.py
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Requires:
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- FL Studio running with FL_MCP controller script loaded
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- Windows MIDI Services loopback ports "FL_MCP 0" (input) and "FL_MCP 1" (output)
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"""
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from __future__ import annotations
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import sys
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import time
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try:
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import mido
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except ImportError:
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print("ERROR: mido not installed. Run: pip install mido")
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sys.exit(1)
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def send_sysex_raw(output, data):
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"""Send raw SysEx bytes via mido."""
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msg = mido.Message("sysex", data=bytes(data))
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output.send(msg)
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def test_simple_sysex():
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"""Test 1: Send F0 7D 48 69 F7 ("Hi") and expect it back."""
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print("\n=== Test 1: Simple SysEx Echo ===")
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output_name = None
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input_name = None
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for name in mido.get_output_names():
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if "FL_MCP" in name and "1" in name:
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output_name = name
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break
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for name in mido.get_input_names():
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if "FL_MCP" in name and "0" in name:
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input_name = name
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break
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if not output_name:
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print("FAIL: FL_MCP output port (FL_MCP 1) not found")
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print("Available outputs:", mido.get_output_names())
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return False
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if not input_name:
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print("FAIL: FL_MCP input port (FL_MCP 0) not found")
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print("Available inputs:", mido.get_input_names())
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return False
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print(f"Output: {output_name}")
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print(f"Input: {input_name}")
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try:
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output = mido.open_output(output_name)
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input_port = mido.open_input(input_name)
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except Exception as e:
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print(f"FAIL: Cannot open ports: {e}")
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return False
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# Send "Hi" ping: F0 7D 48 69 F7
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# (0x48='H', 0x69='i')
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ping_data = [0xF0, 0x7D, 0x48, 0x69, 0xF7]
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print(f"Sending: {' '.join(f'{b:02X}' for b in ping_data)}")
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send_sysex_raw(output, ping_data[1:-1]) # mido adds F0/F7
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print("Waiting 5s for echo...")
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timeout = 5.0
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start = time.time()
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received = None
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while time.time() - start < timeout:
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msg = input_port.receive(timeout=0.1)
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if msg and msg.type == "sysex":
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received = list(msg.bytes())
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break
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output.close()
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input_port.close()
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if received:
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print(f"Received: {' '.join(f'{b:02X}' for b in received)}")
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if received[0] == 0xF0 and received[-1] == 0xF7 and received[1] == 0x7D:
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print("PASS: Simple SysEx loopback works!")
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return True
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print(f"UNKNOWN: Received but unexpected bytes: {received}")
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return False
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else:
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print("FAIL: No message received within timeout")
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return False
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def test_json_command():
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"""Test 2: Send a proper JSON command via nibble encoding."""
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print("\n=== Test 2: JSON Command SysEx ===")
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import json
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output_name = None
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input_name = None
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for name in mido.get_output_names():
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if "FL_MCP" in name and "1" in name:
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output_name = name
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break
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for name in mido.get_input_names():
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if "FL_MCP" in name and "0" in name:
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input_name = name
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break
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if not output_name or not input_name:
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print("SKIP: FL_MCP ports not available for JSON test")
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return False
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try:
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output = mido.open_output(output_name)
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input_port = mido.open_input(input_name)
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except Exception as e:
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print(f"SKIP: Cannot open ports: {e}")
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return False
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# Encode ping command: {"cmd":"ping","params":{"ts":1}}
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payload = json.dumps({"cmd": "ping", "params": {"ts": 1}}).encode("utf-8")
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print(f"JSON payload: {payload}")
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# Nibble encode
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nibbles = []
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for byte in payload:
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nibbles.append((byte >> 4) & 0x0F)
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nibbles.append(byte & 0x0F)
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sysex_data = [0xF0, 0x7D] + nibbles + [0xF7]
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print(f"SysEx: {' '.join(f'{b:02X}' for b in sysex_data)}")
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send_sysex_raw(output, sysex_data[1:-1])
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print("Waiting 5s for response...")
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timeout = 5.0
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start = time.time()
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received = None
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while time.time() - start < timeout:
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msg = input_port.receive(timeout=0.1)
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if msg and msg.type == "sysex":
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received = list(msg.bytes())
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break
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output.close()
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input_port.close()
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if received:
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print(f"Received: {' '.join(f'{b:02X}' for b in received)}")
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# Decode nibbles
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if received[1] == 0x7D:
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nibble_data = received[2:-1]
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result = bytearray()
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for i in range(0, len(nibble_data), 2):
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if i + 1 < len(nibble_data):
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result.append(((nibble_data[i] & 0x0F) << 4) | (nibble_data[i + 1] & 0x0F))
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decoded = result.decode("utf-8")
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print(f"Decoded JSON: {decoded}")
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print("PASS: JSON command roundtrip works!")
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return True
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else:
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print("FAIL: No response within timeout")
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return False
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def list_ports():
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"""List all available MIDI ports."""
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print("\n=== Available MIDI Ports ===")
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print("Inputs:")
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for p in mido.get_input_names():
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print(f" {p}")
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print("Outputs:")
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for p in mido.get_output_names():
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print(f" {p}")
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if __name__ == "__main__":
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print("FL Studio MCP — SysEx Loopback Validation")
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print("=========================================")
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list_ports()
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test1 = test_simple_sysex()
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test2 = test_json_command()
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print("\n=== Summary ===")
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print(f"Simple SysEx: {'PASS' if test1 else 'FAIL'}")
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print(f"JSON Command: {'PASS' if test2 else 'FAIL'}")
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if test1 and test2:
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print("\nSysEx loopback is functional. Phase 1-4 can proceed.")
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sys.exit(0)
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else:
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print("\nSysEx loopback FAILED. Phase 1-4 ABORTED — pivot required.")
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sys.exit(1)
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