Add an option to change internal sample rate

.dockerignore

@@ -0,0 +1,3 @@
+*
+!mg_cli.py
+!requirements.txt

Dockerfile

@@ -0,0 +1,7 @@
+FROM python:3.9-slim
+
+RUN apt-get update && apt-get install -y libsndfile1 ffmpeg && rm -rf /var/lib/apt/lists/*
+COPY requirements.txt mg_cli.py /app/
+RUN cd /app && pip install --no-cache-dir -r requirements.txt
+WORKDIR /data
+ENTRYPOINT ["python3", "/app/mg_cli.py"]

README.md

@@ -75,7 +75,7 @@ And then:
 
 ```
 usage: mg_cli.py [-h] [-b {16,24,32}] [--log LOG] [--no_limiter]
-                 [--dont_normalize]
+                 [--dont_normalize] [-r INTERNAL_SAMPLE_RATE]
                  target reference result
 
 Simple Matchering 2.0 Command Line Application
@@ -94,8 +94,22 @@ optional arguments:
   --no_limiter          Disables the limiter at the final stage of processing
   --dont_normalize      Disables normalization, if --no_limiter is set. Can
                         cause clipping if the bit depth is not 32
+  -r INTERNAL_SAMPLE_RATE, --internal-sample-rate INTERNAL_SAMPLE_RATE
+                        Set the internal sample rate (default: 44100 Hz)
 ```
 
+## Docker Usage
+
+1. Clone the repository.
+2. Put your track and reference file to `./var` directory.
+3. Execute:
+4. 
+```bash
+docker run -v "$PWD/var:/data" --rm $(docker build . -q) track.wav ref.wav mastered.wav --internal-sample-rate 48000
+```
+
+You may adjust `-v` value to any directory with your track and reference files.
+
 ### Visit **[Matchering main repo][matchering]** to learn more about it!
 
 ## A Coffee

mg_cli.py

@@ -12,6 +12,7 @@
 """
 
 import matchering as mg
+from matchering import Config
 from argparse import ArgumentParser
 import logging
 import sys
@@ -51,6 +52,13 @@ def parse_args():
         help="Disables normalization, if --no_limiter is set. "
         "Can cause clipping if the bit depth is not 32",
     )
+    parser.add_argument(
+        "-r",
+        "--internal-sample-rate",
+        type=int,
+        default=44100,
+        help="Set the internal sample rate (default: 44100 Hz)",
+    )
     return parser.parse_args()
 
 
@@ -87,9 +95,13 @@ def run(args, logger):
     logger.debug(f'Contributors: {", ".join(mg.__credits__)}')
 
     try:
+        config = Config()
+        config.internal_sample_rate = args.internal_sample_rate
+
         mg.process(
             target=args.target,
             reference=args.reference,
+            config=config,
             results=[
                 mg.Result(
                     args.result,