From b1d89075d3df240b36ce0ad1677af942e5cba859 Mon Sep 17 00:00:00 2001
From: ange <ange@yw5n.com>
Date: Mon, 1 Jul 2024 16:05:36 +0200
Subject: [PATCH 1/3] remove ffmpy deps from compression

---
 compression/main.py          | 45 ++++++++++++++++++++++++++++++------
 compression/requirements.txt |  1 -
 2 files changed, 38 insertions(+), 8 deletions(-)
 delete mode 100644 compression/requirements.txt

diff --git a/compression/main.py b/compression/main.py
index 67e1401..66c95c5 100755
--- a/compression/main.py
+++ b/compression/main.py
@@ -1,16 +1,47 @@
 #!/usr/bin/env python3
 
-import sys
+import subprocess
 
-from ffmpy import FFmpeg
+
+class FFmpeg:
+    input: str
+    output: str
+    format: str
+    bitrate: str | None
+    freq: int | None
+
+    def __init__(
+        self,
+        input="pipe:0",
+        output="pipe:1",
+        format="mp3",
+        bitrate=None,
+        freq=None,
+    ):
+        self.input = input
+        self.output = output
+        self.format = format
+        self.bitrate = bitrate
+        self.freq = freq
+
+    def __get_cmd(self) -> list[str]:
+        cmd = ["ffmpeg", "-i", self.input, "-f", self.format, self.output]
+
+        if self.bitrate is not None:
+            cmd += ["-b:a", self.bitrate]
+        if self.freq is not None:
+            cmd += ["-ar", str(self.freq)]
+        return cmd
+
+    def run(self):
+        cmd = self.__get_cmd()
+
+        subprocess.Popen(cmd)
 
 
 def main():
-    ff = FFmpeg(
-        inputs={"pipe:0": None},
-        outputs={"pipe:1": "-ar 8000 -b:a 128k -f mp3"},
-    )
-    ff.run(input_data=sys.stdin.buffer.read())
+    ff = FFmpeg(bitrate="128k", freq=8000)
+    ff.run()
 
 
 if __name__ == "__main__":
diff --git a/compression/requirements.txt b/compression/requirements.txt
deleted file mode 100644
index 0aafc23..0000000
--- a/compression/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-ffmpy~=0.3

From c9d670e7176c16ad6d67b8b8a9eb6a2e16603916 Mon Sep 17 00:00:00 2001
From: ange <ange@yw5n.com>
Date: Mon, 1 Jul 2024 17:19:51 +0200
Subject: [PATCH 2/3] add test python c ffmpeg bindings

---
 compression/ctest/main.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 compression/ctest/main.py

diff --git a/compression/ctest/main.py b/compression/ctest/main.py
new file mode 100644
index 0000000..a660274
--- /dev/null
+++ b/compression/ctest/main.py
@@ -0,0 +1,15 @@
+import ctypes
+
+
+def avcodec_version():
+    f = ctypes.CDLL("libavcodec.so")
+
+    print(f.avcodec_version())
+
+
+def main():
+    avcodec_version()
+
+
+if __name__ == "__main__":
+    main()

From f8cdf675608e18762363bb0aa2a38496be9b12bc Mon Sep 17 00:00:00 2001
From: ange <ange@yw5n.com>
Date: Mon, 1 Jul 2024 18:45:15 +0200
Subject: [PATCH 3/3] add amr compression

---
 .gitignore          |  1 +
 compression/main.py | 35 ++++++++++++++++++++++++-----------
 2 files changed, 25 insertions(+), 11 deletions(-)

diff --git a/.gitignore b/.gitignore
index bceb365..b40a346 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 
 ### Audio ###
 *.aif
+*.amr
 *.flac
 *.iff
 *.m3u
diff --git a/compression/main.py b/compression/main.py
index 66c95c5..e5b28ec 100755
--- a/compression/main.py
+++ b/compression/main.py
@@ -7,31 +7,44 @@ class FFmpeg:
     input: str
     output: str
     format: str
-    bitrate: str | None
-    freq: int | None
+    bitrate: int | None
+    fpass: tuple[int, int] | None
 
     def __init__(
         self,
         input="pipe:0",
         output="pipe:1",
-        format="mp3",
+        format="amr",
         bitrate=None,
-        freq=None,
+        fpass=None,
     ):
         self.input = input
         self.output = output
         self.format = format
         self.bitrate = bitrate
-        self.freq = freq
+        self.fpass = fpass
 
     def __get_cmd(self) -> list[str]:
-        cmd = ["ffmpeg", "-i", self.input, "-f", self.format, self.output]
+        cmd = [
+            "ffmpeg",
+            "-i",
+            self.input,
+            "-f",
+            self.format,
+            "-ac",
+            "1",
+            "-ar",
+            "8000",
+        ]
 
         if self.bitrate is not None:
-            cmd += ["-b:a", self.bitrate]
-        if self.freq is not None:
-            cmd += ["-ar", str(self.freq)]
-        return cmd
+            cmd += ["-b:a", str(self.bitrate)]
+        if self.fpass:
+            cmd += [
+                "-filter:a",
+                f"highpass=f={self.fpass[0]},lowpass=f={self.fpass[1]}",
+            ]
+        return cmd + [self.output]
 
     def run(self):
         cmd = self.__get_cmd()
@@ -40,7 +53,7 @@ class FFmpeg:
 
 
 def main():
-    ff = FFmpeg(bitrate="128k", freq=8000)
+    ff = FFmpeg(bitrate=12200, fpass=[200, 3400])
     ff.run()