Add support for FLAC audio codec

PR #4410 <#https://github.com/Genymobile/scrcpy/pull/4410>

Co-authored-by: Romain Vimont <rom@rom1v.com>
Signed-off-by: Romain Vimont <rom@rom1v.com>

doc/audio.md

@@ -62,12 +62,13 @@ scrcpy --audio-source=mic --no-video --no-playback --record=file.opus
 
 ## Codec
 
-The audio codec can be selected. The possible values are `opus` (default), `aac`
-and `raw` (uncompressed PCM 16-bit LE):
+The audio codec can be selected. The possible values are `opus` (default),
+`aac`, `flac` and `raw` (uncompressed PCM 16-bit LE):
 
 ```bash
 scrcpy --audio-codec=opus  # default
 scrcpy --audio-codec=aac
+scrcpy --audio-codec=flac
 scrcpy --audio-codec=raw
 ```
 
@@ -80,7 +81,14 @@ then your device has no Opus encoder: try `scrcpy --audio-codec=aac`.
 For advanced usage, to pass arbitrary parameters to the [`MediaFormat`],
 check `--audio-codec-options` in the manpage or in `scrcpy --help`.
 
+For example, to change the [FLAC compression level]:
+
+```bash
+scrcpy --audio-codec=flac --audio-codec-options=flac-compression-level=8
+```
+
 [`MediaFormat`]: https://developer.android.com/reference/android/media/MediaFormat
+[FLAC compression level]: https://developer.android.com/reference/android/media/MediaFormat#KEY_FLAC_COMPRESSION_LEVEL
 
 
 ## Encoder

doc/recording.md

@@ -18,7 +18,8 @@ To record only the audio:
 ```bash
 scrcpy --no-video --record=file.opus
 scrcpy --no-video --audio-codec=aac --record=file.aac
-# .m4a/.mp4 and .mka/.mkv are also supported for both opus and aac
+scrcpy --no-video --audio-codec=flac --record=file.flac
+# .m4a/.mp4 and .mka/.mkv are also supported for opus, aac and flac
 ```
 
 Timestamps are captured on the device, so [packet delay variation] does not
@@ -35,6 +36,7 @@ client side. Several formats (containers) are supported:
  - MP4 (`.mp4`, `.m4a`, `.aac`)
  - Matroska (`.mkv`, `.mka`)
  - OPUS (`.opus`)
+ - FLAC (`.flac`)
 
 The container is automatically selected based on the filename.