[ci-daily] Fix pipeline tests (#21257)

* use streaming dataset

* fix whisper's test

* add rescale argument to chunk_iter

src/transformers/pipelines/automatic_speech_recognition.py

@@ -56,7 +56,7 @@ def rescale_stride(stride, ratio):
     return new_strides
 
 
-def chunk_iter(inputs, feature_extractor, chunk_len, stride_left, stride_right, ratio, dtype=None):
+def chunk_iter(inputs, feature_extractor, chunk_len, stride_left, stride_right, rescale=True, dtype=None):
     inputs_len = inputs.shape[0]
     step = chunk_len - stride_left - stride_right
     for i in range(0, inputs_len, step):
@@ -68,9 +68,15 @@ def chunk_iter(inputs, feature_extractor, chunk_len, stride_left, stride_right,
         _stride_left = 0 if i == 0 else stride_left
         is_last = i + step + stride_left >= inputs_len
         _stride_right = 0 if is_last else stride_right
+
         chunk_len = chunk.shape[0]
         stride = (chunk_len, _stride_left, _stride_right)
-        if ratio != 1:
+        if "input_features" in processed:
+            processed_len = processed["input_features"].shape[-1]
+        elif "input_values" in processed:
+            processed_len = processed["input_values"].shape[-1]
+        if processed_len != chunk.shape[-1] and rescale:
+            ratio = processed_len / chunk_len
             stride = rescale_stride([stride], ratio)[0]
         if chunk.shape[0] > _stride_left:
             yield {"is_last": is_last, "stride": stride, **processed}
@@ -101,10 +107,10 @@ def _find_timestamp_sequence(sequences, tokenizer, feature_extractor, max_source
         sequence = sequence[begin_idx:]
 
         timestamp_tokens = sequence >= timestamp_begin
+        if seq_idx != 0 and sum(timestamp_tokens) > 0:
             consecutive = np.where(timestamp_tokens[:-1] & timestamp_tokens[1:])[0] + 1
             last_timestamp = np.where(timestamp_tokens)[0][-1]
             consecutive = np.append(consecutive, last_timestamp) if last_timestamp not in consecutive else consecutive
-        if seq_idx != 0:
             time -= stride_left + stride_right
             offset = int((time / feature_extractor.sampling_rate) / time_precision)
             overlap_time = int((stride_left / feature_extractor.sampling_rate) / time_precision)
@@ -400,13 +406,12 @@ class AutomaticSpeechRecognitionPipeline(ChunkPipeline):
                     " only 1 version"
                 )
             forward_params["generate_kwargs"].update(generate_kwargs)
-        if return_timestamps is not None:
-            forward_params["generate_kwargs"]["return_timestamps"] = return_timestamps
 
         postprocess_params = {}
         if decoder_kwargs is not None:
             postprocess_params["decoder_kwargs"] = decoder_kwargs
         if return_timestamps is not None:
+            forward_params["return_timestamps"] = return_timestamps
             postprocess_params["return_timestamps"] = return_timestamps
             if self.model.config.model_type == "whisper":
                 # Whisper is highly specific, if we want timestamps, we need to
@@ -502,9 +507,10 @@ class AutomaticSpeechRecognitionPipeline(ChunkPipeline):
             if chunk_len < stride_left + stride_right:
                 raise ValueError("Chunk length must be superior to stride length")
 
+            rescale = self.type != "seq2seq_whisper"
             # make sure that
             for item in chunk_iter(
-                inputs, self.feature_extractor, chunk_len, stride_left, stride_right, align_to, self.torch_dtype
+                inputs, self.feature_extractor, chunk_len, stride_left, stride_right, rescale, self.torch_dtype
             ):
                 yield item
         else:
@@ -520,12 +526,11 @@ class AutomaticSpeechRecognitionPipeline(ChunkPipeline):
                 processed["stride"] = stride
             yield {"is_last": True, **processed, **extra}
 
-    def _forward(self, model_inputs, generate_kwargs=None):
+    def _forward(self, model_inputs, return_timestamps=False, generate_kwargs=None):
         if generate_kwargs is None:
             generate_kwargs = {}
 
         is_last = model_inputs.pop("is_last")
-        return_timestamps = generate_kwargs.pop("return_timestamps", False)
 
         if self.type == "seq2seq":
             encoder = self.model.get_encoder()
@@ -635,9 +640,9 @@ class AutomaticSpeechRecognitionPipeline(ChunkPipeline):
                 # Simply cast from pyctcdecode format to wav2vec2 format to leverage
                 # pre-existing code later
                 chunk_offset = beams[0][2]
-                word_offsets = []
+                offsets = []
                 for word, (start_offset, end_offset) in chunk_offset:
-                    word_offsets.append({"word": word, "start_offset": start_offset, "end_offset": end_offset})
+                    offsets.append({"word": word, "start_offset": start_offset, "end_offset": end_offset})
         else:
             skip_special_tokens = self.type != "ctc"
             text = self.tokenizer.decode(items, skip_special_tokens=skip_special_tokens)

tests/pipelines/test_pipelines_automatic_speech_recognition.py

@@ -201,8 +201,9 @@ class AutomaticSpeechRecognitionPipelineTests(unittest.TestCase, metaclass=Pipel
     @require_torch
     @require_pyctcdecode
     def test_large_model_pt_with_lm(self):
-        dataset = load_dataset("Narsil/asr_dummy")
-        filename = dataset["test"][3]["file"]
+        dataset = load_dataset("Narsil/asr_dummy", streaming=True)
+        third_item = next(iter(dataset["test"].skip(3)))
+        filename = third_item["file"]
 
         speech_recognizer = pipeline(
             task="automatic-speech-recognition",