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app.py

@@ -1,15 +1,336 @@
 import gradio as gr
-from transformers import pipeline
+import os
+import datetime
+import pytz
+from pathlib import Path
 
-pipeline = pipeline(task="image-classification", model="julien-c/hotdog-not-hotdog")
+def current_time():
+	current = datetime.datetime.now(pytz.timezone('Asia/Shanghai')).strftime("%Y年-%m月-%d日 %H时:%M分:%S秒")
+	return current
 
-def predict(image):
-    predictions = pipeline(image)
-    return {p["label"]: p["score"] for p in predictions}
+print(f"[{current_time()}] 开始部署空间...")
+
+"""
+print(f"[{current_time()}] 日志：安装 - 必要包")
+os.system("pip install -r ./requirements.txt")
+"""
+print(f"[{current_time()}] 日志：安装 - gsutil")
+os.system("pip install gsutil")
+print(f"[{current_time()}] 日志：Git - 克隆 Github 的 T5X 训练框架到当前目录")
+os.system("git clone --branch=main https://github.com/google-research/t5x")
+print(f"[{current_time()}] 日志：文件 - 移动 t5x 到当前目录并重命名为 t5x_tmp 并删除")
+os.system("mv t5x t5x_tmp; mv t5x_tmp/* .; rm -r t5x_tmp")
+print(f"[{current_time()}] 日志：编辑 - 替换 setup.py 内的文本“jax[tpu]”为“jax”")
+os.system("sed -i 's:jax\[tpu\]:jax:' setup.py")
+print(f"[{current_time()}] 日志：Python - 使用 pip 安装 当前目录内的 Python 包")
+os.system("python3 -m pip install -e .")
+print(f"[{current_time()}] 日志：Python - 更新 Python 包管理器 pip")
+os.system("python3 -m pip install --upgrade pip")
+print(f"[{current_time()}] 日志：安装 - langchain")
+os.system("pip install langchain")
+print(f"[{current_time()}] 日志：安装 - sentence-transformers")
+os.system("pip install sentence-transformers")
+
+# 安装 airio
+print(f"[{current_time()}] 日志：Git - 克隆 Github 的 airio 到当前目录")
+os.system("git clone --branch=main https://github.com/google/airio")
+print(f"[{current_time()}] 日志：文件 - 移动 airio 到当前目录并重命名为 airio_tmp 并删除")
+os.system("mv airio airio_tmp; mv airio_tmp/* .; rm -r airio_tmp")
+print(f"[{current_time()}] 日志：Python - 使用 pip 安装 当前目录内的 Python 包")
+os.system("python3 -m pip install -e .")
+
+# 安装 mt3
+print(f"[{current_time()}] 日志：Git - 克隆 Github 的 MT3 模型到当前目录")
+os.system("git clone --branch=main https://github.com/magenta/mt3")
+print(f"[{current_time()}] 日志：文件 - 移动 mt3 到当前目录并重命名为 mt3_tmp 并删除")
+os.system("mv mt3 mt3_tmp; mv mt3_tmp/* .; rm -r mt3_tmp")
+print(f"[{current_time()}] 日志：Python - 使用 pip 从 storage.googleapis.com 安装 jax[cuda11_local] nest-asyncio pyfluidsynth")
+os.system("python3 -m pip install jax[cuda11_local] nest-asyncio pyfluidsynth==1.3.0 -e . -f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html")
+print(f"[{current_time()}] 日志：Python - 使用 pip 安装 当前目录内的 Python 包")
+os.system("python3 -m pip install -e .")
+print(f"[{current_time()}] 日志：安装 - TensorFlow CPU")
+os.system("pip install tensorflow_cpu")
+
+# 复制检查点
+print(f"[{current_time()}] 日志：gsutil - 复制 MT3 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：gsutil - 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 - 必要工具")
+import functools
+import seqio
+import t5
+import t5x
+
+import numpy as np
+import tensorflow.compat.v2 as tf
+
+import functools
+import gin
+import jax
+import librosa
+import note_seq
+
+from mt3 import metrics_utils
+from mt3 import models
+from mt3 import network
+from mt3 import note_sequences
+from mt3 import preprocessors
+from mt3 import spectrograms
+from mt3 import vocabularies
+
+import nest_asyncio
+nest_asyncio.apply()
+
+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)
+
+
+print(f"[{current_time()}] 日志：开始包装模型...")
+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。
+		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：恢复模型检查点")
+		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()}] 运行：从预处理数据集中预测音符序列")
+		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。
+		"""
+		print(f"[{current_time()}] 运行：从音频样本中推断音符序列")
+		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()}] 运行：从音频创建包含频谱图的 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。"""
+		print(f"[{current_time()}] 运行：从音频计算频谱图帧")
+		frame_size = self.spectrogram_config.hop_width
+		padding = [0, frame_size提示 - 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):
+	filename = os.path.basename(audio)  # 获取输入文件的文件名
+	print(f"[{current_time()}] 运行：输入文件: {filename}")
+	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，或点击示例以查看效果。更多信息请参阅下面的链接。"
+
+article = "<p style='text-align: center'>出错了？试试把文件转换为MP3后再上传吧~</p><p style='text-align: center'><a href='https://arxiv.org/abs/2111.03017' target='_blank'>MT3: 多任务多音轨音乐转录</a> | <a href='https://github.com/hmjz100/mt3' target='_blank'>Github 仓库</a></p>"
+
+examples=[['canon.flac'], ['download.wav']]
 
 gr.Interface(
-    predict,
-    inputs=gr.inputs.Image(label="Upload hot dog candidate", type="filepath"),
-    outputs=gr.outputs.Label(num_top_classes=2),
-    title="Hot Dog? Or Not?",
-).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()

packages.txt

@@ -0,0 +1,4 @@
+libfluidsynth3 
+build-essential 
+libasound2-dev 
+libjack-dev

requirements.txt

@@ -1,2 +1,19 @@
-transformers
-torch
+nest-asyncio
+pyfluidsynth
+absl-py
+ddsp
+flax
+gin-config
+gradio
+immutabledict
+librosa
+mir_eval
+note_seq
+numpy
+pretty_midi
+scikit-learn
+scipy
+seqio
+tensorflow_cpu
+tensorflow-datasets
+t5