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LiveTalking
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reduce time delay; support audio attention choice

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lipku 1 year ago
parent 250cbaa587
commit 9cdd6fcadf
4 changed files with 149 additions and 119 deletions
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6
README.md
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@ -133,9 +133,9 @@ srs和nginx的运行同2.1和2.3
在Tesla T4显卡上测试整体fps为18左右，如果去掉音视频编码推流，帧率在20左右。用4090显卡可以达到40多帧/秒。
优化：新开一个线程运行音视频编码推流
2. 延时
整体延时5s多
（1）tts延时2s左右，目前用的edgetts，需要将每句话转完后一次性输入，可以优化tts改成流式输入
（2）wav2vec延时1s多，需要缓存50帧音频做计算，可以通过-m设置context_size来减少延时
整体延时3s左右
（1）tts延时1.7s左右，目前用的edgetts，需要将每句话转完后一次性输入，可以优化tts改成流式输入
（2）wav2vec延时0.4s，需要缓存18帧音频做计算
（3）srs转发延时，设置srs服务器减少缓冲延时。具体配置可看 https://ossrs.net/lts/zh-cn/docs/v5/doc/low-latency, 配置了一个低延时版本
```python
docker run --rm -it -p 1935:1935 -p 1985:1985 -p 8080:8080 registry.cn-hangzhou.aliyuncs.com/lipku/srs:v1.1

6
app.py
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@ -37,7 +37,11 @@ async def main(voicename: str, text: str, render):
communicate = edge_tts.Communicate(text, voicename)
#with open(OUTPUT_FILE, "wb") as file:
first = True
async for chunk in communicate.stream():
if first:
#render.before_push_audio()
first = False
if chunk["type"] == "audio":
render.push_audio(chunk["data"])
#file.write(chunk["data"])
@ -258,7 +262,7 @@ if __name__ == '__main__':
parser.add_argument('--fps', type=int, default=50)
# sliding window left-middle-right length (unit: 20ms)
parser.add_argument('-l', type=int, default=10)
parser.add_argument('-m', type=int, default=50)
parser.add_argument('-m', type=int, default=8)
parser.add_argument('-r', type=int, default=10)
parser.add_argument('--fullbody', action='store_true', help="fullbody human")

253
asrreal.py
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@ -122,58 +122,34 @@ class ASR:
self.att_feats = [torch.zeros(self.audio_dim, 16, dtype=torch.float32, device=self.device)] * 4 # 4 zero padding...
# warm up steps needed: mid + right + window_size + attention_size
self.warm_up_steps = self.context_size + self.stride_right_size + self.stride_left_size #+ 8 + 2 * 3
self.warm_up_steps = self.context_size + self.stride_right_size #+ self.stride_left_size #+ 8 + 2 * 3
self.listening = False
self.playing = False
def listen(self):
# start
if self.mode == 'live' and not self.listening:
print(f'[INFO] starting read frame thread...')
self.process_read_frame.start()
self.listening = True
if self.play and not self.playing:
print(f'[INFO] starting play frame thread...')
self.process_play_frame.start()
self.playing = True
def stop(self):
self.exit_event.set()
if self.play:
self.output_stream.stop_stream()
self.output_stream.close()
if self.playing:
self.process_play_frame.join()
self.playing = False
if self.mode == 'live':
#self.input_stream.stop_stream() todo
self.input_stream.close()
if self.listening:
self.process_read_frame.join()
self.listening = False
def get_next_feat(self): #get audio embedding to nerf
# return a [1/8, 16] window, for the next input to nerf side.
if self.opt.att>0:
while len(self.att_feats) < 8:
# [------f+++t-----]
if self.front < self.tail:
feat = self.feat_queue[self.front:self.tail]
# [++t-----------f+]
else:
feat = torch.cat([self.feat_queue[self.front:], self.feat_queue[:self.tail]], dim=0)
def __enter__(self):
return self
self.front = (self.front + 2) % self.feat_queue.shape[0]
self.tail = (self.tail + 2) % self.feat_queue.shape[0]
def __exit__(self, exc_type, exc_value, traceback):
self.stop()
# print(self.front, self.tail, feat.shape)
if self.mode == 'live':
# live mode: also print the result text.
self.text += '\n[END]'
print(self.text)
self.att_feats.append(feat.permute(1, 0))
att_feat = torch.stack(self.att_feats, dim=0) # [8, 44, 16]
def get_next_feat(self):
# return a [1/8, 16] window, for the next input to nerf side.
while len(self.att_feats) < 8:
# discard old
self.att_feats = self.att_feats[1:]
else:
# [------f+++t-----]
if self.front < self.tail:
feat = self.feat_queue[self.front:self.tail]
@ -184,14 +160,8 @@ class ASR:
self.front = (self.front + 2) % self.feat_queue.shape[0]
self.tail = (self.tail + 2) % self.feat_queue.shape[0]
# print(self.front, self.tail, feat.shape)
self.att_feats.append(feat.permute(1, 0))
att_feat = torch.stack(self.att_feats, dim=0) # [8, 44, 16]
att_feat = feat.permute(1, 0).unsqueeze(0)
# discard old
self.att_feats = self.att_feats[1:]
return att_feat
@ -201,7 +171,7 @@ class ASR:
return
# get a frame of audio
frame = self.get_audio_frame()
frame = self.__get_audio_frame()
# the last frame
if frame is None:
@ -223,7 +193,7 @@ class ASR:
print(f'[INFO] frame_to_text... ')
#t = time.time()
logits, labels, text = self.frame_to_text(inputs)
logits, labels, text = self.__frame_to_text(inputs)
#print(f'-------wav2vec time:{time.time()-t:.4f}s')
feats = logits # better lips-sync than labels
@ -264,68 +234,17 @@ class ASR:
np.save(output_path, unfold_feats.cpu().numpy())
print(f"[INFO] saved logits to {output_path}")
'''
def create_file_stream(self):
stream, sample_rate = sf.read(self.opt.asr_wav) # [T*sample_rate,] float64
stream = stream.astype(np.float32)
if stream.ndim > 1:
print(f'[WARN] audio has {stream.shape[1]} channels, only use the first.')
stream = stream[:, 0]
if sample_rate != self.sample_rate:
print(f'[WARN] audio sample rate is {sample_rate}, resampling into {self.sample_rate}.')
stream = resampy.resample(x=stream, sr_orig=sample_rate, sr_new=self.sample_rate)
print(f'[INFO] loaded audio stream {self.opt.asr_wav}: {stream.shape}')
return stream
def create_pyaudio_stream(self):
import pyaudio
print(f'[INFO] creating live audio stream ...')
audio = pyaudio.PyAudio()
# get devices
info = audio.get_host_api_info_by_index(0)
n_devices = info.get('deviceCount')
for i in range(0, n_devices):
if (audio.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
name = audio.get_device_info_by_host_api_device_index(0, i).get('name')
print(f'[INFO] choose audio device {name}, id {i}')
break
# get stream
stream = audio.open(input_device_index=i,
format=pyaudio.paInt16,
channels=1,
rate=self.sample_rate,
input=True,
frames_per_buffer=self.chunk)
return audio, stream
'''
def get_audio_frame(self):
def __get_audio_frame(self):
if self.inwarm: # warm up
return np.zeros(self.chunk, dtype=np.float32)
if self.mode == 'file':
if self.idx < self.file_stream.shape[0]:
frame = self.file_stream[self.idx: self.idx + self.chunk]
self.idx = self.idx + self.chunk
return frame
else:
return None
return None
else:
try:
frame = self.queue.get(block=False)
@ -338,7 +257,7 @@ class ASR:
return frame
def frame_to_text(self, frame):
def __frame_to_text(self, frame):
# frame: [N * 320], N = (context_size + 2 * stride_size)
inputs = self.processor(frame, sampling_rate=self.sample_rate, return_tensors="pt", padding=True)
@ -377,7 +296,7 @@ class ASR:
return logits[0], None,None #predicted_ids[0], transcription # [N,]
def create_bytes_stream(self,byte_stream):
def __create_bytes_stream(self,byte_stream):
#byte_stream=BytesIO(buffer)
stream, sample_rate = sf.read(byte_stream) # [T*sample_rate,] float64
print(f'[INFO]tts audio stream {sample_rate}: {stream.shape}')
@ -393,14 +312,14 @@ class ASR:
return stream
def push_audio(self,buffer):
def push_audio(self,buffer): #push audio pcm from tts
print(f'[INFO] push_audio {len(buffer)}')
if self.opt.tts == "xtts":
if len(buffer)>0:
stream = np.frombuffer(buffer, dtype=np.int16).astype(np.float32) / 32767
stream = resampy.resample(x=stream, sr_orig=24000, sr_new=self.sample_rate)
#byte_stream=BytesIO(buffer)
#stream = self.create_bytes_stream(byte_stream)
#stream = self.__create_bytes_stream(byte_stream)
streamlen = stream.shape[0]
idx=0
while streamlen >= self.chunk:
@ -413,7 +332,7 @@ class ASR:
self.input_stream.write(buffer)
if len(buffer)<=0:
self.input_stream.seek(0)
stream = self.create_bytes_stream(self.input_stream)
stream = self.__create_bytes_stream(self.input_stream)
streamlen = stream.shape[0]
idx=0
while streamlen >= self.chunk:
@ -425,8 +344,21 @@ class ASR:
self.input_stream.seek(0)
self.input_stream.truncate()
def get_audio_out(self):
def get_audio_out(self): #get origin audio pcm to nerf
return self.output_queue.get()
def __init_queue(self):
self.frames = []
self.queue.queue.clear()
self.output_queue.queue.clear()
self.front = self.feat_buffer_size * self.context_size - 8 # fake padding
self.tail = 8
# attention window...
self.att_feats = [torch.zeros(self.audio_dim, 16, dtype=torch.float32, device=self.device)] * 4
def before_push_audio(self):
self.__init_queue()
self.warm_up()
def run(self):
@ -450,19 +382,110 @@ class ASR:
self.inwarm = True
print(f'[INFO] warm up ASR live model, expected latency = {self.warm_up_steps / self.fps:.6f}s')
t = time.time()
for _ in range(self.stride_left_size):
self.frames.append(np.zeros(self.chunk, dtype=np.float32))
for _ in range(self.warm_up_steps):
self.run_step()
if torch.cuda.is_available():
torch.cuda.synchronize()
#if torch.cuda.is_available():
# torch.cuda.synchronize()
t = time.time() - t
print(f'[INFO] warm-up done, actual latency = {t:.6f}s')
self.inwarm = False
#self.clear_queue()
'''
def create_file_stream(self):
stream, sample_rate = sf.read(self.opt.asr_wav) # [T*sample_rate,] float64
stream = stream.astype(np.float32)
if stream.ndim > 1:
print(f'[WARN] audio has {stream.shape[1]} channels, only use the first.')
stream = stream[:, 0]
if sample_rate != self.sample_rate:
print(f'[WARN] audio sample rate is {sample_rate}, resampling into {self.sample_rate}.')
stream = resampy.resample(x=stream, sr_orig=sample_rate, sr_new=self.sample_rate)
print(f'[INFO] loaded audio stream {self.opt.asr_wav}: {stream.shape}')
return stream
def create_pyaudio_stream(self):
import pyaudio
print(f'[INFO] creating live audio stream ...')
audio = pyaudio.PyAudio()
# get devices
info = audio.get_host_api_info_by_index(0)
n_devices = info.get('deviceCount')
for i in range(0, n_devices):
if (audio.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
name = audio.get_device_info_by_host_api_device_index(0, i).get('name')
print(f'[INFO] choose audio device {name}, id {i}')
break
# get stream
stream = audio.open(input_device_index=i,
format=pyaudio.paInt16,
channels=1,
rate=self.sample_rate,
input=True,
frames_per_buffer=self.chunk)
return audio, stream
'''
#####not used function#####################################
def listen(self):
# start
if self.mode == 'live' and not self.listening:
print(f'[INFO] starting read frame thread...')
self.process_read_frame.start()
self.listening = True
if self.play and not self.playing:
print(f'[INFO] starting play frame thread...')
self.process_play_frame.start()
self.playing = True
def stop(self):
self.exit_event.set()
if self.play:
self.output_stream.stop_stream()
self.output_stream.close()
if self.playing:
self.process_play_frame.join()
self.playing = False
if self.mode == 'live':
#self.input_stream.stop_stream() todo
self.input_stream.close()
if self.listening:
self.process_read_frame.join()
self.listening = False
def __enter__(self):
return self
def __exit__(self, exc_type, exc_value, traceback):
self.stop()
if self.mode == 'live':
# live mode: also print the result text.
self.text += '\n[END]'
print(self.text)
#########################################################
if __name__ == '__main__':
import argparse

3
nerfreal.py
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@ -108,6 +108,9 @@ class NeRFReal:
def push_audio(self,chunk):
self.asr.push_audio(chunk)
def before_push_audio(self):
self.asr.before_push_audio()
def prepare_buffer(self, outputs):
if self.mode == 'image':

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