FEAT: add ability to send pach to synth through CC messages

main.py

@@ -115,6 +115,24 @@ def program_change_cli(args):
         outport.send(msg)
 
 
+def apply_state_to_synth(state, outport_name):
+    with mido.open_output(outport_name) as outport:
+        LOGGER.debug("Ready to use MIDI port %s", outport_name)
+        for msg in state.to_cc_messages():
+            outport.send(msg)
+            # Sleeping a bit to avoid flooding the MIDI connection
+            time.sleep(0.001)
+
+
+def send_patch_cli(args):
+    outport_name = args.midi_out
+    path = args.path
+    LOGGER.info("Applying PRM file %s", path)
+
+    state = JU06AState.from_path(path)
+    apply_state_to_synth(state, outport_name)
+
+
 def main():
     logging.basicConfig(level=logging.DEBUG,
                         format="%(levelname)s:%(module)s.%(funcName)s: %(message)s")
@@ -134,6 +152,11 @@ def main():
                            help="MIDI channel (default: 1)")
     pc_parser.set_defaults(func=program_change_cli)
 
+    send_patch_parser = subparsers.add_parser("send-patch",
+                                              help="Apply the given patch file to the synth through MIDI")
+    send_patch_parser.add_argument("path", type=str, help="Path to the PRM file")
+    send_patch_parser.set_defaults(func=send_patch_cli)
+
     cc_parser = subparsers.add_parser("control-change", aliases=["cc"],
                                       help="Send a MIDI control change message")
     cc_parser.add_argument("cc_number", type=int, help="Control change number")

src/text2synth/state.py

@@ -3,8 +3,35 @@
 from enum import IntEnum, verify, UNIQUE
 from typing import Self
 
+import mido
+
 from pydantic import BaseModel, ConfigDict, Field
 
+from .synths import JU_A6_A
+
+
+# List of fields that support a range of 0..255 at the synth level. This list
+# was created automatically from the CLI by analyzing a bunch of real patches
+DOUBLE_ATTRIBUTES = {
+    "amp_level",
+    "attack",
+    "cutoff",
+    "decay",
+    "env_mod",
+    "flt_key_follow",
+    "flt_lfo_mod",
+    "hpf",
+    "lfo_delay_time",
+    "lfo_rate",
+    "noise_level",
+    "osc_lfo_mod",
+    "pwm",
+    "release",
+    "resonance",
+    "sub_level",
+    "sustain",
+}
+
 
 @verify(UNIQUE)
 class OscRange(IntEnum):
@@ -319,3 +346,28 @@ def attribute_to_patch_key(self, attribute):
         """ Convert the given attribute name into the key used in .PRN files.
         """
         return attribute.replace("_", " ").upper()
+
+    def to_cc_messages(self):
+        """ Create a list of MIDI messages that when applied to the synth, will
+        update the synth to the current state.
+        """
+        messages = []
+        for data in JU_A6_A.values():
+            cc = data["cc"]
+
+            patch_attribute = data["patch_attribute"]
+            value = getattr(self, patch_attribute)
+            if patch_attribute in DOUBLE_ATTRIBUTES:
+                cc_value = value // 2
+            elif isinstance(value, IntEnum):
+                if isinstance(value, PortamentoSwitch):
+                    # cc value [0, 63[ -> off, [63-128[ -> on
+                    cc_value = 63 * value
+                else:
+                    cc_value = value
+            else:
+                cc_value = value
+
+            messages.append(mido.Message("control_change", control=cc, value=cc_value))
+
+        return messages