abc music inference support

backend-python/rwkv_pip/utils.py

@@ -34,6 +34,25 @@ class PIPELINE_ARGS:
         )
 
 
+class ABC_TOKENIZER:
+    def __init__(self):
+        self.pad_token_id = 0
+        self.bos_token_id = 2
+        self.eos_token_id = 3
+
+    def encode(self, text):
+        ids = [ord(c) for c in text]
+        return ids
+
+    def decode(self, ids):
+        txt = "".join(
+            chr(idx) if idx > self.eos_token_id else ""
+            for idx in ids
+            if idx != self.eos_token_id
+        )
+        return txt
+
+
 class PIPELINE:
     def __init__(self, model, WORD_NAME: str):
         self.model = model
@@ -48,6 +67,8 @@ class PIPELINE:
             self.tokenizer = TRIE_TOKENIZER(
                 os.path.dirname(os.path.abspath(__file__)) + "/rwkv_vocab_v20230424.txt"
             )
+        elif WORD_NAME == "abc_tokenizer":
+            self.tokenizer = ABC_TOKENIZER()
         else:
             if WORD_NAME.endswith(".txt"):
                 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

backend-python/utils/rwkv.py

@@ -11,11 +11,6 @@ from pydantic import BaseModel, Field
 from routes import state_cache
 import global_var
 
-
-END_OF_TEXT = 0
-END_OF_LINE_DOUBLE = 535
-
-
 os.environ["TORCH_EXTENSIONS_DIR"] = f"{pathlib.Path(__file__).parent.parent.resolve()}"
 
 
@@ -28,6 +23,8 @@ class RWKVType(Enum):
 
 class AbstractRWKV(ABC):
     def __init__(self, model, pipeline):
+        self.EOS_ID = 0
+
         self.name = "rwkv"
         self.model = model
         self.pipeline = pipeline
@@ -274,7 +271,7 @@ class AbstractRWKV(ABC):
                 logits, temperature=self.temperature, top_p=self.top_p, top_k=self.top_k
             )
 
-            if token == END_OF_TEXT:
+            if token == self.EOS_ID:
                 yield response, "", prompt_token_len, completion_token_len
                 break
 
@@ -401,7 +398,7 @@ class TextRWKV(AbstractRWKV):
     def fix_tokens(self, tokens) -> List[int]:
         if self.rwkv_type == RWKVType.World:
             return tokens
-        if len(tokens) > 0 and tokens[-1] == END_OF_LINE_DOUBLE:
+        if len(tokens) > 0 and tokens[-1] == 535:
             tokens = tokens[:-1] + [self.END_OF_LINE, self.END_OF_LINE]
         return tokens
 
@@ -459,7 +456,7 @@ The following is a coherent verbose detailed conversation between a girl named {
             pass
 
 
-class MusicRWKV(AbstractRWKV):
+class MusicMidiRWKV(AbstractRWKV):
     def __init__(self, model, pipeline):
         super().__init__(model, pipeline)
 
@@ -501,8 +498,45 @@ class MusicRWKV(AbstractRWKV):
         return " " + delta
 
 
+class MusicAbcRWKV(AbstractRWKV):
+    def __init__(self, model, pipeline):
+        super().__init__(model, pipeline)
+
+        self.EOS_ID = 3
+
+        self.max_tokens_per_generation = 500
+        self.temperature = 1
+        self.top_p = 0.8
+        self.top_k = 8
+
+        self.rwkv_type = RWKVType.Music
+
+    def adjust_occurrence(self, occurrence: Dict, token: int):
+        pass
+
+    def adjust_forward_logits(self, logits: List[float], occurrence: Dict, i: int):
+        pass
+
+    def fix_tokens(self, tokens) -> List[int]:
+        return tokens
+
+    def run_rnn(
+        self, _tokens: List[str], newline_adj: int = 0
+    ) -> Tuple[List[float], int]:
+        tokens = [int(x) for x in _tokens]
+        token_len = len(tokens)
+        self.model_tokens += tokens
+        out, self.model_state = self.model.forward(tokens, self.model_state)
+        return out, token_len
+
+    def delta_postprocess(self, delta: str) -> str:
+        return delta
+
+
 def get_tokenizer(tokenizer_len: int):
     tokenizer_dir = f"{pathlib.Path(__file__).parent.parent.resolve()}/rwkv_pip/"
+    if tokenizer_len < 20096:
+        return "abc_tokenizer"
     if tokenizer_len < 50277:
         return tokenizer_dir + "tokenizer-midi.json"
     elif tokenizer_len < 65536:
@@ -550,7 +584,8 @@ def RWKV(model: str, strategy: str, tokenizer: Union[str, None]) -> AbstractRWKV
     rwkv_map: dict[str, Type[AbstractRWKV]] = {
         "20B_tokenizer": TextRWKV,
         "rwkv_vocab_v20230424": TextRWKV,
-        "tokenizer-midi": MusicRWKV,
+        "tokenizer-midi": MusicMidiRWKV,
+        "abc_tokenizer": MusicAbcRWKV,
     }
     tokenizer_name = os.path.splitext(os.path.basename(tokenizer))[0]
     rwkv: AbstractRWKV