Upload app.py

app.py

@@ -1,37 +1,50 @@
+import gradio as gr
 import os
-os.system("pip install gradio")
+import datetime
+import pytz
 
-import gradio as gr
-from pathlib import Path
-os.system("pip install gsutil")
+current_time = datetime.datetime.now(pytz.timezone('Asia/Shanghai')).strftime("%Y年-%m月-%d日 %H时:%M分:%S秒")
 
+print(f"[{current_time}] 日志： - 部署空间")
 
+from pathlib import Path
+print(f"[{current_time}] 日志： - 安装 gsutil")
+os.system("pip install gsutil")
+print(f"[{current_time}] 日志： - 从 Github 克隆 T5X 训练框架")
 os.system("git clone --branch=main https://github.com/google-research/t5x")
+print(f"[{current_time}] 日志： - 将 T5X 训练框架转变为临时文件")
 os.system("mv t5x t5x_tmp; mv t5x_tmp/* .; rm -r t5x_tmp")
+print(f"[{current_time}] 日志： - 修改当前目录下的 setup.py 内的 jax[tpu] 为 jax")
 os.system("sed -i 's:jax\[tpu\]:jax:' setup.py")
+print(f"[{current_time}] 日志： - 安装当前目录中的 Python 包")
 os.system("python3 -m pip install -e .")
+print(f"[{current_time}] 日志： - 更新 Python 包管理器 pip 到最新版")
 os.system("python3 -m pip install --upgrade pip")
 
 
 # 安装 mt3
+print(f"[{current_time}] 日志： - 从 Github 克隆 MT3 模型")
 os.system("git clone --branch=main https://github.com/magenta/mt3")
+print(f"[{current_time}] 日志： - 将 MT3 模型转变为临时文件")
 os.system("mv mt3 mt3_tmp; mv mt3_tmp/* .; rm -r mt3_tmp")
+print(f"[{current_time}] 日志： - 安装当前目录中的 Python 包")
 os.system("python3 -m pip install -e .")
+print(f"[{current_time}] 日志： - 安装 TensorFlow CPU版")
 os.system("pip install tensorflow_cpu")
+
 # 复制检查点
+print(f"[{current_time}] 日志： - 复制 MT3 内的检查点到当前目录")
 os.system("gsutil -q -m cp -r gs://mt3/checkpoints .")
 
 # 复制 soundfont 文件（原始文件来自 https://sites.google.com/site/soundfonts4u）
+print(f"[{current_time}] 日志： - 复制 SoundFont 文件到当前目录")
 os.system("gsutil -q -m cp gs://magentadata/soundfonts/SGM-v2.01-Sal-Guit-Bass-V1.3.sf2 .")
 
 #@title 导入和定义
-
-
+print(f"[{current_time}] 日志： - 导入实用命令")
 import functools
-import os
 
 import numpy as np
-
 import tensorflow.compat.v2 as tf
 
 import functools
@@ -40,7 +53,6 @@ import jax
 import librosa
 import note_seq
 
-
 import seqio
 import t5
 import t5x
@@ -61,224 +73,232 @@ SAMPLE_RATE = 16000
 SF2_PATH = 'SGM-v2.01-Sal-Guit-Bass-V1.3.sf2'
 
 def upload_audio(audio, sample_rate):
-  return note_seq.audio_io.wav_data_to_samples_librosa(
-    audio, sample_rate=sample_rate)
-
+	return note_seq.audio_io.wav_data_to_samples_librosa(
+		audio, sample_rate=sample_rate)
 
 
+print(f"[{current_time}] 日志： - 包装模型")
 class InferenceModel(object):
-  """音乐转录的 T5X 模型包装器。"""
-
-  def __init__(self, checkpoint_path, model_type='mt3'):
-
-    # 模型常量。
-    if model_type == 'ismir2021':
-      num_velocity_bins = 127
-      self.encoding_spec = note_sequences.NoteEncodingSpec
-      self.inputs_length = 512
-    elif model_type == 'mt3':
-      num_velocity_bins = 1
-      self.encoding_spec = note_sequences.NoteEncodingWithTiesSpec
-      self.inputs_length = 256
-    else:
-      raise ValueError('unknown model_type: %s' % model_type)
-
-    gin_files = ['/home/user/app/mt3/gin/model.gin',
-                 '/home/user/app/mt3/gin/mt3.gin']
-
-    self.batch_size = 8
-    self.outputs_length = 1024
-    self.sequence_length = {'inputs': self.inputs_length, 
-                            'targets': self.outputs_length}
-
-    self.partitioner = t5x.partitioning.PjitPartitioner(
-        model_parallel_submesh=None, num_partitions=1)
-
-    # 构建编解码器和词汇表。
-    self.spectrogram_config = spectrograms.SpectrogramConfig()
-    self.codec = vocabularies.build_codec(
-        vocab_config=vocabularies.VocabularyConfig(
-            num_velocity_bins=num_velocity_bins))
-    self.vocabulary = vocabularies.vocabulary_from_codec(self.codec)
-    self.output_features = {
-        'inputs': seqio.ContinuousFeature(dtype=tf.float32, rank=2),
-        'targets': seqio.Feature(vocabulary=self.vocabulary),
-    }
-
-    # 创建 T5X 模型。
-    self._parse_gin(gin_files)
-    self.model = self._load_model()
-
-    # 从检查点中恢复。
-    self.restore_from_checkpoint(checkpoint_path)
-
-  @property
-  def input_shapes(self):
-    return {
-          'encoder_input_tokens': (self.batch_size, self.inputs_length),
-          'decoder_input_tokens': (self.batch_size, self.outputs_length)
-    }
-
-  def _parse_gin(self, gin_files):
-    """解析用于训练模型的 gin 文件。"""
-    gin_bindings = [
-        'from __gin__ import dynamic_registration',
-        'from mt3 import vocabularies',
-        '[email protected]()',
-        'vocabularies.VocabularyConfig.num_velocity_bins=%NUM_VELOCITY_BINS'
-    ]
-    with gin.unlock_config():
-      gin.parse_config_files_and_bindings(
-          gin_files, gin_bindings, finalize_config=False)
-
-  def _load_model(self):
-    """在解析训练 gin 配置后加载 T5X `Model`。"""
-    model_config = gin.get_configurable(network.T5Config)()
-    module = network.Transformer(config=model_config)
-    return models.ContinuousInputsEncoderDecoderModel(
-        module=module,
-        input_vocabulary=self.output_features['inputs'].vocabulary,
-        output_vocabulary=self.output_features['targets'].vocabulary,
-        optimizer_def=t5x.adafactor.Adafactor(decay_rate=0.8, step_offset=0),
-        input_depth=spectrograms.input_depth(self.spectrogram_config))
-
-
-  def restore_from_checkpoint(self, checkpoint_path):
-    """从检查点中恢复训练状态，重置 self._predict_fn()。"""
-    train_state_initializer = t5x.utils.TrainStateInitializer(
-      optimizer_def=self.model.optimizer_def,
-      init_fn=self.model.get_initial_variables,
-      input_shapes=self.input_shapes,
-      partitioner=self.partitioner)
-
-    restore_checkpoint_cfg = t5x.utils.RestoreCheckpointConfig(
-        path=checkpoint_path, mode='specific', dtype='float32')
-
-    train_state_axes = train_state_initializer.train_state_axes
-    self._predict_fn = self._get_predict_fn(train_state_axes)
-    self._train_state = train_state_initializer.from_checkpoint_or_scratch(
-        [restore_checkpoint_cfg], init_rng=jax.random.PRNGKey(0))
-
-  @functools.lru_cache()
-  def _get_predict_fn(self, train_state_axes):
-    """生成一个分区的预测函数用于解码。"""
-    def partial_predict_fn(params, batch, decode_rng):
-      return self.model.predict_batch_with_aux(
-          params, batch, decoder_params={'decode_rng': None})
-    return self.partitioner.partition(
-        partial_predict_fn,
-        in_axis_resources=(
-            train_state_axes.params,
-            t5x.partitioning.PartitionSpec('data',), None),
-        out_axis_resources=t5x.partitioning.PartitionSpec('data',)
-    )
-
-  def predict_tokens(self, batch, seed=0):
-    """从预处理的数据集批次中预测 tokens。"""
-    prediction, _ = self._predict_fn(
+	"""音乐转录的 T5X 模型包装器。"""
+
+	def __init__(self, checkpoint_path, model_type='mt3'):
+
+		# 模型常量。
+		print(f"[{current_time}] 日志： - 设置模型常量")
+		if model_type == 'ismir2021':
+			num_velocity_bins = 127
+			self.encoding_spec = note_sequences.NoteEncodingSpec
+			self.inputs_length = 512
+		elif model_type == 'mt3':
+			num_velocity_bins = 1
+			self.encoding_spec = note_sequences.NoteEncodingWithTiesSpec
+			self.inputs_length = 256
+		else:
+			raise ValueError('unknown model_type: %s' % model_type)
+
+		gin_files = ['/home/user/app/mt3/gin/model.gin',
+					'/home/user/app/mt3/gin/mt3.gin']
+
+		self.batch_size = 8
+		self.outputs_length = 1024
+		self.sequence_length = {'inputs': self.inputs_length,
+														'targets': self.outputs_length}
+
+		self.partitioner = t5x.partitioning.PjitPartitioner(
+				model_parallel_submesh=None, num_partitions=1)
+
+		# 构建编解码器和词汇表。
+		print(f"[{current_time}] 日志： - 构建编解码器")
+		self.spectrogram_config = spectrograms.SpectrogramConfig()
+		self.codec = vocabularies.build_codec(
+				vocab_config=vocabularies.VocabularyConfig(
+						num_velocity_bins=num_velocity_bins))
+		self.vocabulary = vocabularies.vocabulary_from_codec(self.codec)
+		self.output_features = {
+				'inputs': seqio.ContinuousFeature(dtype=tf.float32, rank=2),
+				'targets': seqio.Feature(vocabulary=self.vocabulary),
+		}
+
+		# 创建 T5X 模型。
+		print(f"[{current_time}] 日志： - 创建 T5X 模型")
+		self._parse_gin(gin_files)
+		self.model = self._load_model()
+
+		# 从检查点中恢复。
+		print(f"[{current_time}] 日志： - 恢复检查点")
+		self.restore_from_checkpoint(checkpoint_path)
+
+	@property
+	def input_shapes(self):
+		return {
+					'encoder_input_tokens': (self.batch_size, self.inputs_length),
+					'decoder_input_tokens': (self.batch_size, self.outputs_length)
+		}
+
+	def _parse_gin(self, gin_files):
+		"""解析用于训练模型的 gin 文件。"""
+		print(f"[{current_time}] 日志： - 解析 gin 文件")
+		gin_bindings = [
+				'from __gin__ import dynamic_registration',
+				'from mt3 import vocabularies',
+				'[email protected]()',
+				'vocabularies.VocabularyConfig.num_velocity_bins=%NUM_VELOCITY_BINS'
+		]
+		with gin.unlock_config():
+			gin.parse_config_files_and_bindings(
+					gin_files, gin_bindings, finalize_config=False)
+
+	def _load_model(self):
+		"""在解析训练 gin 配置后加载 T5X `Model`。"""
+		print(f"[{current_time}] 日志： - 加载 T5X 模型")
+		model_config = gin.get_configurable(network.T5Config)()
+		module = network.Transformer(config=model_config)
+		return models.ContinuousInputsEncoderDecoderModel(
+				module=module,
+				input_vocabulary=self.output_features['inputs'].vocabulary,
+				output_vocabulary=self.output_features['targets'].vocabulary,
+				optimizer_def=t5x.adafactor.Adafactor(decay_rate=0.8, step_offset=0),
+				input_depth=spectrograms.input_depth(self.spectrogram_config))
+
+
+	def restore_from_checkpoint(self, checkpoint_path):
+		"""从检查点中恢复训练状态，重置 self._predict_fn()。"""
+		print(f"[{current_time}] 日志： - 从检查点恢复训练状态")
+		train_state_initializer = t5x.utils.TrainStateInitializer(
+			optimizer_def=self.model.optimizer_def,
+			init_fn=self.model.get_initial_variables,
+			input_shapes=self.input_shapes,
+			partitioner=self.partitioner)
+
+		restore_checkpoint_cfg = t5x.utils.RestoreCheckpointConfig(
+				path=checkpoint_path, mode='specific', dtype='float32')
+
+		train_state_axes = train_state_initializer.train_state_axes
+		self._predict_fn = self._get_predict_fn(train_state_axes)
+		self._train_state = train_state_initializer.from_checkpoint_or_scratch(
+				[restore_checkpoint_cfg], init_rng=jax.random.PRNGKey(0))
+
+	@functools.lru_cache()
+	def _get_predict_fn(self, train_state_axes):
+		"""生成一个分区的预测函数用于解码。"""
+		print(f"[{current_time}] 日志： - 生成用于解码的预测函数")
+		def partial_predict_fn(params, batch, decode_rng):
+			return self.model.predict_batch_with_aux(
+					params, batch, decoder_params={'decode_rng': None})
+		return self.partitioner.partition(
+				partial_predict_fn,
+				in_axis_resources=(
+						train_state_axes.params,
+						t5x.partitioning.PartitionSpec('data',), None),
+				out_axis_resources=t5x.partitioning.PartitionSpec('data',)
+		)
+
+	def predict_tokens(self, batch, seed=0):
+		"""从预处理的数据集批次中预测 tokens。"""
+		print(f"[{current_time}] 日志： - 从数据集中预测 tokens")
+		prediction, _ = self._predict_fn(
 self._train_state.params, batch, jax.random.PRNGKey(seed))
-    return self.vocabulary.decode_tf(prediction).numpy()
-
-  def __call__(self, audio):
-    """从音频样本推断出音符序列。
-    
-    参数：
-      audio：16kHz 的单个音频样本的 1 维 numpy 数组。
-    返回：
-      转录音频的音符序列。
-    """
-    ds = self.audio_to_dataset(audio)
-    ds = self.preprocess(ds)
-
-    model_ds = self.model.FEATURE_CONVERTER_CLS(pack=False)(
-        ds, task_feature_lengths=self.sequence_length)
-    model_ds = model_ds.batch(self.batch_size)
-
-    inferences = (tokens for batch in model_ds.as_numpy_iterator()
-                  for tokens in self.predict_tokens(batch))
-
-    predictions = []
-    for example, tokens in zip(ds.as_numpy_iterator(), inferences):
-      predictions.append(self.postprocess(tokens, example))
-
-    result = metrics_utils.event_predictions_to_ns(
-        predictions, codec=self.codec, encoding_spec=self.encoding_spec)
-    return result['est_ns']
-
-  def audio_to_dataset(self, audio):
-    """从输入音频创建一个包含频谱图的 TF Dataset。"""
-    frames, frame_times = self._audio_to_frames(audio)
-    return tf.data.Dataset.from_tensors({
-        'inputs': frames,
-        'input_times': frame_times,
-    })
-
-  def _audio_to_frames(self, audio):
-    """从音频计算频谱图帧。"""
-    frame_size = self.spectrogram_config.hop_width
-    padding = [0, frame_size - len(audio) % frame_size]
-    audio = np.pad(audio, padding, mode='constant')
-    frames = spectrograms.split_audio(audio, self.spectrogram_config)
-    num_frames = len(audio) // frame_size
-    times = np.arange(num_frames) / self.spectrogram_config.frames_per_second
-    return frames, times
-
-  def preprocess(self, ds):
-    pp_chain = [
-        functools.partial(
-            t5.data.preprocessors.split_tokens_to_inputs_length,
-            sequence_length=self.sequence_length,
-            output_features=self.output_features,
-            feature_key='inputs',
-            additional_feature_keys=['input_times']),
-        # 在训练期间进行缓存。
-        preprocessors.add_dummy_targets,
-        functools.partial(
-            preprocessors.compute_spectrograms,
-            spectrogram_config=self.spectrogram_config)
-    ]
-    for pp in pp_chain:
-      ds = pp(ds)
-    return ds
-
-  def postprocess(self, tokens, example):
-    tokens = self._trim_eos(tokens)
-    start_time = example['input_times'][0]
-    # 向下取整到最接近的符号化时间步。
-    start_time -= start_time % (1 / self.codec.steps_per_second)
-    return {
-        'est_tokens': tokens,
-        'start_time': start_time,
-        # 内部 MT3 代码期望原始输入，这里不使用。
-        'raw_inputs': []
-    }
-
-  @staticmethod
-  def _trim_eos(tokens):
-    tokens = np.array(tokens, np.int32)
-    if vocabularies.DECODED_EOS_ID in tokens:
-      tokens = tokens[:np.argmax(tokens == vocabularies.DECODED_EOS_ID)]
-    return tokens
+		return self.vocabulary.decode_tf(prediction).numpy()
+
+	def __call__(self, audio):
+		"""从音频样本推断出音符序列。
+
+		参数：
+			audio：16kHz 的单个音频样本的 1 维 numpy 数组。
+		返回：
+			转录音频的音符序列。
+		"""
+		print(f"[{current_time}] 日志： - 推断音符序列")
+		ds = self.audio_to_dataset(audio)
+		ds = self.preprocess(ds)
+
+		model_ds = self.model.FEATURE_CONVERTER_CLS(pack=False)(
+				ds, task_feature_lengths=self.sequence_length)
+		model_ds = model_ds.batch(self.batch_size)
+
+		inferences = (tokens for batch in model_ds.as_numpy_iterator()
+									for tokens in self.predict_tokens(batch))
+
+		predictions = []
+		for example, tokens in zip(ds.as_numpy_iterator(), inferences):
+			predictions.append(self.postprocess(tokens, example))
+
+		result = metrics_utils.event_predictions_to_ns(
+				predictions, codec=self.codec, encoding_spec=self.encoding_spec)
+		return result['est_ns']
+
+	def audio_to_dataset(self, audio):
+		"""从输入音频创建一个包含频谱图的 TF Dataset。"""
+		print(f"[{current_time}] 日志： - 创建 TF Dataset")
+		frames, frame_times = self._audio_to_frames(audio)
+		return tf.data.Dataset.from_tensors({
+				'inputs': frames,
+				'input_times': frame_times,
+		})
+
+	def _audio_to_frames(self, audio):
+		"""从音频计算频谱图帧。"""
+		print(f"[{current_time}] 日志： - 计算频谱图帧")
+		frame_size = self.spectrogram_config.hop_width
+		padding = [0, frame_size - len(audio) % frame_size]
+		audio = np.pad(audio, padding, mode='constant')
+		frames = spectrograms.split_audio(audio, self.spectrogram_config)
+		num_frames = len(audio) // frame_size
+		times = np.arange(num_frames) / self.spectrogram_config.frames_per_second
+		return frames, times
+
+	def preprocess(self, ds):
+		pp_chain = [
+				functools.partial(
+						t5.data.preprocessors.split_tokens_to_inputs_length,
+						sequence_length=self.sequence_length,
+						output_features=self.output_features,
+						feature_key='inputs',
+						additional_feature_keys=['input_times']),
+				# 在训练期间进行缓存。
+				preprocessors.add_dummy_targets,
+				functools.partial(
+						preprocessors.compute_spectrograms,
+						spectrogram_config=self.spectrogram_config)
+		]
+		for pp in pp_chain:
+			ds = pp(ds)
+		return ds
+
+	def postprocess(self, tokens, example):
+		tokens = self._trim_eos(tokens)
+		start_time = example['input_times'][0]
+		# 向下取整到最接近的符号化时间步。
+		start_time -= start_time % (1 / self.codec.steps_per_second)
+		return {
+				'est_tokens': tokens,
+				'start_time': start_time,
+				# 内部 MT3 代码期望原始输入，这里不使用。
+				'raw_inputs': []
+		}
+
+	@staticmethod
+	def _trim_eos(tokens):
+		tokens = np.array(tokens, np.int32)
+		if vocabularies.DECODED_EOS_ID in tokens:
+			tokens = tokens[:np.argmax(tokens == vocabularies.DECODED_EOS_ID)]
+		return tokens
 
 
+inference_model = InferenceModel('/home/user/app/checkpoints/mt3/', 'mt3')
 
 
+def inference(audio):
+	with open(audio, 'rb') as fd:
+		contents = fd.read()
+	audio = upload_audio(contents,sample_rate=16000)
 
+	est_ns = inference_model(audio)
 
-inference_model = InferenceModel('/home/user/app/checkpoints/mt3/', 'mt3')
+	note_seq.sequence_proto_to_midi_file(est_ns, './transcribed.mid')
 
+	return './transcribed.mid'
 
-def inference(audio):
-  with open(audio, 'rb') as fd:
-      contents = fd.read()
-  audio = upload_audio(contents,sample_rate=16000)
-  
-  est_ns = inference_model(audio)
-  
-  note_seq.sequence_proto_to_midi_file(est_ns, './transcribed.mid')
- 
-  return './transcribed.mid'
-  
 title = "MT3"
 description = "MT3：多任务多音轨音乐转录的 Gradio 演示。要使用它，只需上传音频文件，或点击示例以加载它们。更多信息请参阅下面的链接。"
 
@@ -287,14 +307,14 @@ article = "<p style='text-align: center'>出错了？试试把文件转换为MP3
 examples=[['canon.flac'], ['download.wav']]
 
 gr.Interface(
-    inference, 
-    gr.inputs.Audio(type="filepath", label="输入"), 
-    [gr.outputs.File(label="输出")],
-    title=title,
-    description=description,
-    article=article,
-    examples=examples, 
-    allow_flagging=False,
-    allow_screenshot=False,
-    enable_queue=True
-    ).launch()
+		inference,
+		gr.inputs.Audio(type="filepath", label="输入"),
+		[gr.outputs.File(label="输出")],
+		title=title,
+		description=description,
+		article=article,
+		examples=examples,
+		allow_flagging=False,
+		allow_screenshot=False,
+		enable_queue=True
+		).launch()