Generate subtitles with FireRedAsr models (#2112)

@@ -79,8 +79,17 @@ wget https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/silero_v
   --num-threads=2 \
   /path/to/test.mp4
 
+(6) For FireRedAsr models
 
-(6) For WeNet CTC models
+./python-api-examples/generate-subtitles.py  \
+  --silero-vad-model=/path/to/silero_vad.onnx \
+  --tokens=./sherpa-onnx-fire-red-asr-large-zh_en-2025-02-16/tokens.txt \
+  --fire-red-asr-encoder=./sherpa-onnx-fire-red-asr-large-zh_en-2025-02-16/encoder.int8.onnx \
+  --fire-red-asr-decoder=./sherpa-onnx-fire-red-asr-large-zh_en-2025-02-16/decoder.int8.onnx \
+  --num-threads=2 \
+  /path/to/test.mp4
+
+(7) For WeNet CTC models
 
 ./python-api-examples/generate-subtitles.py  \
   --silero-vad-model=/path/to/silero_vad.onnx \
@@ -175,6 +184,20 @@ def get_args():
     )
 
     parser.add_argument(
+        "--fire-red-asr-encoder",
+        default="",
+        type=str,
+        help="Path to FireRedAsr encoder model",
+    )
+
+    parser.add_argument(
+        "--fire-red-asr-decoder",
+        default="",
+        type=str,
+        help="Path to FireRedAsr decoder model",
+    )
+
+    parser.add_argument(
         "--whisper-encoder",
         default="",
         type=str,
@@ -304,6 +327,8 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
         assert len(args.wenet_ctc) == 0, args.wenet_ctc
         assert len(args.whisper_encoder) == 0, args.whisper_encoder
         assert len(args.whisper_decoder) == 0, args.whisper_decoder
+        assert len(args.fire_red_asr_encoder) == 0, args.fire_red_asr_encoder
+        assert len(args.fire_red_asr_decoder) == 0, args.fire_red_asr_decoder
         assert len(args.moonshine_preprocessor) == 0, args.moonshine_preprocessor
         assert len(args.moonshine_encoder) == 0, args.moonshine_encoder
         assert (
@@ -331,6 +356,8 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
         assert len(args.wenet_ctc) == 0, args.wenet_ctc
         assert len(args.whisper_encoder) == 0, args.whisper_encoder
         assert len(args.whisper_decoder) == 0, args.whisper_decoder
+        assert len(args.fire_red_asr_encoder) == 0, args.fire_red_asr_encoder
+        assert len(args.fire_red_asr_decoder) == 0, args.fire_red_asr_decoder
         assert len(args.moonshine_preprocessor) == 0, args.moonshine_preprocessor
         assert len(args.moonshine_encoder) == 0, args.moonshine_encoder
         assert (
@@ -353,6 +380,8 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
         assert len(args.wenet_ctc) == 0, args.wenet_ctc
         assert len(args.whisper_encoder) == 0, args.whisper_encoder
         assert len(args.whisper_decoder) == 0, args.whisper_decoder
+        assert len(args.fire_red_asr_encoder) == 0, args.fire_red_asr_encoder
+        assert len(args.fire_red_asr_decoder) == 0, args.fire_red_asr_decoder
         assert len(args.moonshine_preprocessor) == 0, args.moonshine_preprocessor
         assert len(args.moonshine_encoder) == 0, args.moonshine_encoder
         assert (
@@ -371,6 +400,8 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
     elif args.wenet_ctc:
         assert len(args.whisper_encoder) == 0, args.whisper_encoder
         assert len(args.whisper_decoder) == 0, args.whisper_decoder
+        assert len(args.fire_red_asr_encoder) == 0, args.fire_red_asr_encoder
+        assert len(args.fire_red_asr_decoder) == 0, args.fire_red_asr_decoder
         assert len(args.moonshine_preprocessor) == 0, args.moonshine_preprocessor
         assert len(args.moonshine_encoder) == 0, args.moonshine_encoder
         assert (
@@ -392,6 +423,8 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
     elif args.whisper_encoder:
         assert_file_exists(args.whisper_encoder)
         assert_file_exists(args.whisper_decoder)
+        assert len(args.fire_red_asr_encoder) == 0, args.fire_red_asr_encoder
+        assert len(args.fire_red_asr_decoder) == 0, args.fire_red_asr_decoder
         assert len(args.moonshine_preprocessor) == 0, args.moonshine_preprocessor
         assert len(args.moonshine_encoder) == 0, args.moonshine_encoder
         assert (
@@ -411,6 +444,8 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
             tail_paddings=args.whisper_tail_paddings,
         )
     elif args.moonshine_preprocessor:
+        assert len(args.fire_red_asr_encoder) == 0, args.fire_red_asr_encoder
+        assert len(args.fire_red_asr_decoder) == 0, args.fire_red_asr_decoder
         assert_file_exists(args.moonshine_preprocessor)
         assert_file_exists(args.moonshine_encoder)
         assert_file_exists(args.moonshine_uncached_decoder)
@@ -426,6 +461,15 @@ def create_recognizer(args) -> sherpa_onnx.OfflineRecognizer:
             decoding_method=args.decoding_method,
             debug=args.debug,
         )
+    elif args.fire_red_asr_encoder:
+        recognizer = sherpa_onnx.OfflineRecognizer.from_fire_red_asr(
+            encoder=args.fire_red_asr_encoder,
+            decoder=args.fire_red_asr_decoder,
+            tokens=args.tokens,
+            num_threads=args.num_threads,
+            decoding_method=args.decoding_method,
+            debug=args.debug,
+        )
     else:
         raise ValueError("Please specify at least one model")