feat: instructions options translated automatically by --instructions

1 files changed, 34 insertions, 5 deletions

diff --git a/app/converter/clients/audiocpp.py b/app/converter/clients/audiocpp.py
index 98d64ba..578a13b 100644
--- a/app/converter/clients/audiocpp.py
+++ b/app/converter/clients/audiocpp.py
@@ -58,6 +58,14 @@ AUDIOCPP_VOICE_SPEAKER = "speaker"  # built-in speaker name (Qwen CustomVoice)
 AUDIOCPP_VOICE_CLONE = "clone"      # server-side preset / voice_dir (Base, others)
 AUDIOCPP_VOICE_DESIGN = "design"    # voice described by --instructions (vdes)
 
+# How a family's speech endpoint consumes --instructions: the OpenAI-style
+# top-level "instructions" field (the default, read by most design/style
+# implementations), or the "instruction" request option inside the
+# "options" object (BreezeTTS 2: --request-option instruction=... and the
+# endpoint example send it there; its loader ignores the top-level field).
+AUDIOCPP_INSTRUCTION_FIELD = "field"
+AUDIOCPP_INSTRUCTION_OPTION = "option"
+
 # HTTP error body fragments identifying deterministic request-configuration
 # problems: the identical request will fail on every retry, so the chunk
 # loop must give up immediately instead of burning its attempt budget.
@@ -531,13 +539,19 @@ class AudioCppFamilyProfile:
     """
 
     def __init__(self, language_style: str = AUDIOCPP_LANG_OMIT,
-                 script_prefix: Optional[str] = None):
+                 script_prefix: Optional[str] = None,
+                 instruction_channel: str = AUDIOCPP_INSTRUCTION_FIELD):
         self.language_style = language_style
         # SCRIPT_PREFIX, when set, formats every request's text as one
         # "<prefix>: text" script line (audiocpp_script_input): the
         # family's server implementation parses the prompt as a
         # speaker-script and silently drops unprefixed lines (VibeVoice).
         self.script_prefix = script_prefix
+        # INSTRUCTION_CHANNEL picks where --instructions go: the OpenAI
+        # "instructions" field (AUDIOCPP_INSTRUCTION_FIELD) or the
+        # "instruction" request option (AUDIOCPP_INSTRUCTION_OPTION,
+        # BreezeTTS 2 — see its profile below).
+        self.instruction_channel = instruction_channel
 
 
 # Generic profile for families not listed in AUDIOCPP_FAMILY_PROFILES:
@@ -563,6 +577,12 @@ AUDIOCPP_FAMILY_PROFILES = {
     # client flattens each request into one Speaker-1 line (the server
     # renormalizes the lowest speaker id to zero — the cloned reference).
     "vibevoice": AudioCppFamilyProfile(script_prefix="Speaker 1"),
+    # BreezeTTS 2 (text design/clone/direction) reads the instruction as a
+    # request option, not the OpenAI "instructions" field: upstream's own
+    # endpoint example sends {"options": {"instruction": "..."}}. The
+    # model detects the language (zh/en) itself, so no language field.
+    "breeze_tts": AudioCppFamilyProfile(
+        instruction_channel=AUDIOCPP_INSTRUCTION_OPTION),
 }
 
 
@@ -1191,14 +1211,23 @@ class AudioCppTTSClient(BaseTTSClient):
             # audio.cpp has no negative "randomize" seed; a negative seed
             # means "let the server randomize", so the field is omitted.
             payload["seed"] = self._seed
-        if self.instructions:
-            # Explicit voice-design or style instruction (required for task
-            # "vdes" entries; a Ctrl/style control on families that read it).
-            payload["instructions"] = self.instructions
         if self.request_options:
             # Generic per-model controls (--option KEY=VALUE): forwarded
             # verbatim; the model ignores keys it does not know.
             payload["options"] = dict(self.request_options)
+        if self.instructions:
+            # Explicit voice-design or style instruction (required for task
+            # "vdes" entries; a voice/style control on families that read
+            # it). Families on the option channel take it as a request
+            # option; an explicit --option instruction=... from the caller
+            # lands here too and is never overwritten.
+            if self.profile.instruction_channel == AUDIOCPP_INSTRUCTION_OPTION:
+                if not (self.request_options or {}).get("instruction", ""):
+                    options = dict(self.request_options)
+                    options["instruction"] = self.instructions
+                    payload["options"] = options
+            else:
+                payload["instructions"] = self.instructions
         request = urllib.request.Request(
             url, data=json.dumps(payload).encode("utf-8"),
             headers={"Content-Type": "application/json"}, method="POST")