silk-python 0.2.4

silk encode and decode

✨ pysilk ✨

The python binding for silk-v3-decoder

安装

pip install silk-python

使用

• encode

import pysilk

with open("verybiginput.pcm", "rb") as pcm, open("output.silk", "wb") as silk:
    pysilk.encode(pcm, silk, 24000, 24000)

• decode

import pysilk

with open("verybiginput.silk", "rb") as silk, open("output.pcm", "wb") as pcm:
    pysilk.decode(silk, pcm, 24000)

支持功能

• 接受任何二进制的file-like object，比如BytesIO，可以流式解码大文件
• 包装了silk的全部C接口的参数，当然他们都有合理的默认值
• 基于Cython， 关键部位 内联C函数，高性能

公开函数

from typing import BinaryIO

def encode(input: BinaryIO, output: BinaryIO, sample_rate: int, bit_rate: int, max_internal_sample_rate: int = 24000, packet_loss_percentage: int = 0, complexity: int = 2, use_inband_fec: bool = False, use_dtx: bool = False, tencent: bool = True) -> bytes: ...
def decode(input: BinaryIO, output: BinaryIO, sample_rate: int, frame_size: int = 0, frames_per_packet: int = 1, more_internal_decoder_frames: bool = False, in_band_fec_offset: int = 0, loss: bool = False) -> bytes: ...

公开异常

class SilkError(Exception):
    pass

✨v0.2.0✨

合并了CFFI 的工作

本机编译

python -m pip install setuptools wheel cython cffi
git clone https://github.com/synodriver/pysilk
cd pysilk
git submodule update --init --recursive
python setup.py bdist_wheel --use-cython --use-cffi

后端选择

默认由py实现决定，在cpython上自动选择cython后端，在pypy上自动选择cffi后端，使用SILK_USE_CFFI环境变量可以强制选择cffi