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add offline websocket server/client (#98)
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[flake8] | ||
show-source=true | ||
statistics=true | ||
max-line-length = 80 | ||
max-line-length = 120 | ||
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exclude = | ||
.git, | ||
|
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158 changes: 158 additions & 0 deletions
158
python-api-examples/offline-websocket-client-decode-files-paralell.py
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#!/usr/bin/env python3 | ||
# | ||
# Copyright (c) 2023 Xiaomi Corporation | ||
|
||
""" | ||
A websocket client for sherpa-onnx-offline-websocket-server | ||
This file shows how to transcribe multiple | ||
files in parallel. We create a separate connection for transcribing each file. | ||
Usage: | ||
./offline-websocket-client-decode-files-parallel.py \ | ||
--server-addr localhost \ | ||
--server-port 6006 \ | ||
/path/to/foo.wav \ | ||
/path/to/bar.wav \ | ||
/path/to/16kHz.wav \ | ||
/path/to/8kHz.wav | ||
(Note: You have to first start the server before starting the client) | ||
You can find the server at | ||
https://github.com/k2-fsa/sherpa-onnx/blob/master/sherpa-onnx/csrc/offline-websocket-server.cc | ||
Note: The server is implemented in C++. | ||
""" | ||
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import argparse | ||
import asyncio | ||
import logging | ||
import wave | ||
from typing import Tuple | ||
|
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try: | ||
import websockets | ||
except ImportError: | ||
print("please run:") | ||
print("") | ||
print(" pip install websockets") | ||
print("") | ||
print("before you run this script") | ||
print("") | ||
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import numpy as np | ||
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def get_args(): | ||
parser = argparse.ArgumentParser( | ||
formatter_class=argparse.ArgumentDefaultsHelpFormatter | ||
) | ||
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parser.add_argument( | ||
"--server-addr", | ||
type=str, | ||
default="localhost", | ||
help="Address of the server", | ||
) | ||
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parser.add_argument( | ||
"--server-port", | ||
type=int, | ||
default=6006, | ||
help="Port of the server", | ||
) | ||
|
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parser.add_argument( | ||
"sound_files", | ||
type=str, | ||
nargs="+", | ||
help="The input sound file(s) to decode. Each file must be of WAVE" | ||
"format with a single channel, and each sample has 16-bit, " | ||
"i.e., int16_t. " | ||
"The sample rate of the file can be arbitrary and does not need to " | ||
"be 16 kHz", | ||
) | ||
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return parser.parse_args() | ||
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def read_wave(wave_filename: str) -> Tuple[np.ndarray, int]: | ||
""" | ||
Args: | ||
wave_filename: | ||
Path to a wave file. It should be single channel and each sample should | ||
be 16-bit. Its sample rate does not need to be 16kHz. | ||
Returns: | ||
Return a tuple containing: | ||
- A 1-D array of dtype np.float32 containing the samples, which are | ||
normalized to the range [-1, 1]. | ||
- sample rate of the wave file | ||
""" | ||
|
||
with wave.open(wave_filename) as f: | ||
assert f.getnchannels() == 1, f.getnchannels() | ||
assert f.getsampwidth() == 2, f.getsampwidth() # it is in bytes | ||
num_samples = f.getnframes() | ||
samples = f.readframes(num_samples) | ||
samples_int16 = np.frombuffer(samples, dtype=np.int16) | ||
samples_float32 = samples_int16.astype(np.float32) | ||
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samples_float32 = samples_float32 / 32768 | ||
return samples_float32, f.getframerate() | ||
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async def run( | ||
server_addr: str, | ||
server_port: int, | ||
wave_filename: str, | ||
): | ||
async with websockets.connect( | ||
f"ws://{server_addr}:{server_port}" | ||
) as websocket: # noqa | ||
logging.info(f"Sending {wave_filename}") | ||
samples, sample_rate = read_wave(wave_filename) | ||
assert isinstance(sample_rate, int) | ||
assert samples.dtype == np.float32, samples.dtype | ||
assert samples.ndim == 1, samples.dim | ||
buf = sample_rate.to_bytes(4, byteorder="little") # 4 bytes | ||
buf += (samples.size * 4).to_bytes(4, byteorder="little") | ||
buf += samples.tobytes() | ||
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await websocket.send(buf) | ||
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decoding_results = await websocket.recv() | ||
logging.info(f"{wave_filename}\n{decoding_results}") | ||
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# to signal that the client has sent all the data | ||
await websocket.send("Done") | ||
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async def main(): | ||
args = get_args() | ||
logging.info(vars(args)) | ||
|
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server_addr = args.server_addr | ||
server_port = args.server_port | ||
sound_files = args.sound_files | ||
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all_tasks = [] | ||
for wave_filename in sound_files: | ||
task = asyncio.create_task( | ||
run( | ||
server_addr=server_addr, | ||
server_port=server_port, | ||
wave_filename=wave_filename, | ||
) | ||
) | ||
all_tasks.append(task) | ||
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await asyncio.gather(*all_tasks) | ||
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if __name__ == "__main__": | ||
formatter = ( | ||
"%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s" # noqa | ||
) | ||
logging.basicConfig(format=formatter, level=logging.INFO) | ||
asyncio.run(main()) |
152 changes: 152 additions & 0 deletions
152
python-api-examples/offline-websocket-client-decode-files-sequential.py
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---|---|---|
@@ -0,0 +1,152 @@ | ||
#!/usr/bin/env python3 | ||
# | ||
# Copyright (c) 2023 Xiaomi Corporation | ||
|
||
""" | ||
A websocket client for sherpa-onnx-offline-websocket-server | ||
This file shows how to use a single connection to transcribe multiple | ||
files sequentially. | ||
Usage: | ||
./offline-websocket-client-decode-files-sequential.py \ | ||
--server-addr localhost \ | ||
--server-port 6006 \ | ||
/path/to/foo.wav \ | ||
/path/to/bar.wav \ | ||
/path/to/16kHz.wav \ | ||
/path/to/8kHz.wav | ||
(Note: You have to first start the server before starting the client) | ||
You can find the server at | ||
https://github.com/k2-fsa/sherpa-onnx/blob/master/sherpa-onnx/csrc/offline-websocket-server.cc | ||
Note: The server is implemented in C++. | ||
""" | ||
|
||
import argparse | ||
import asyncio | ||
import logging | ||
import wave | ||
from typing import List, Tuple | ||
|
||
try: | ||
import websockets | ||
except ImportError: | ||
print("please run:") | ||
print("") | ||
print(" pip install websockets") | ||
print("") | ||
print("before you run this script") | ||
print("") | ||
|
||
import numpy as np | ||
|
||
|
||
def get_args(): | ||
parser = argparse.ArgumentParser( | ||
formatter_class=argparse.ArgumentDefaultsHelpFormatter | ||
) | ||
|
||
parser.add_argument( | ||
"--server-addr", | ||
type=str, | ||
default="localhost", | ||
help="Address of the server", | ||
) | ||
|
||
parser.add_argument( | ||
"--server-port", | ||
type=int, | ||
default=6006, | ||
help="Port of the server", | ||
) | ||
|
||
parser.add_argument( | ||
"sound_files", | ||
type=str, | ||
nargs="+", | ||
help="The input sound file(s) to decode. Each file must be of WAVE" | ||
"format with a single channel, and each sample has 16-bit, " | ||
"i.e., int16_t. " | ||
"The sample rate of the file can be arbitrary and does not need to " | ||
"be 16 kHz", | ||
) | ||
|
||
return parser.parse_args() | ||
|
||
|
||
def read_wave(wave_filename: str) -> Tuple[np.ndarray, int]: | ||
""" | ||
Args: | ||
wave_filename: | ||
Path to a wave file. It should be single channel and each sample should | ||
be 16-bit. Its sample rate does not need to be 16kHz. | ||
Returns: | ||
Return a tuple containing: | ||
- A 1-D array of dtype np.float32 containing the samples, which are | ||
normalized to the range [-1, 1]. | ||
- sample rate of the wave file | ||
""" | ||
|
||
with wave.open(wave_filename) as f: | ||
assert f.getnchannels() == 1, f.getnchannels() | ||
assert f.getsampwidth() == 2, f.getsampwidth() # it is in bytes | ||
num_samples = f.getnframes() | ||
samples = f.readframes(num_samples) | ||
samples_int16 = np.frombuffer(samples, dtype=np.int16) | ||
samples_float32 = samples_int16.astype(np.float32) | ||
|
||
samples_float32 = samples_float32 / 32768 | ||
return samples_float32, f.getframerate() | ||
|
||
|
||
async def run( | ||
server_addr: str, | ||
server_port: int, | ||
sound_files: List[str], | ||
): | ||
async with websockets.connect( | ||
f"ws://{server_addr}:{server_port}" | ||
) as websocket: # noqa | ||
for wave_filename in sound_files: | ||
logging.info(f"Sending {wave_filename}") | ||
samples, sample_rate = read_wave(wave_filename) | ||
assert isinstance(sample_rate, int) | ||
assert samples.dtype == np.float32, samples.dtype | ||
assert samples.ndim == 1, samples.dim | ||
buf = sample_rate.to_bytes(4, byteorder="little") # 4 bytes | ||
buf += (samples.size * 4).to_bytes(4, byteorder="little") | ||
buf += samples.tobytes() | ||
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await websocket.send(buf) | ||
|
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decoding_results = await websocket.recv() | ||
print(decoding_results) | ||
|
||
# to signal that the client has sent all the data | ||
await websocket.send("Done") | ||
|
||
|
||
async def main(): | ||
args = get_args() | ||
logging.info(vars(args)) | ||
|
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server_addr = args.server_addr | ||
server_port = args.server_port | ||
sound_files = args.sound_files | ||
|
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await run( | ||
server_addr=server_addr, | ||
server_port=server_port, | ||
sound_files=sound_files, | ||
) | ||
|
||
|
||
if __name__ == "__main__": | ||
formatter = ( | ||
"%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s" # noqa | ||
) | ||
logging.basicConfig(format=formatter, level=logging.INFO) | ||
asyncio.run(main()) |
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