Can you add the new environment variable for the **MixRamp** option? #380 (#438)

Author: GioF71

README.md

@@ -157,6 +157,7 @@ ZEROCONF_ENABLED|Set to `yes` to enable, disabled by default.
 ZEROCONF_NAME|Set zeroconf name, used only if `ZEROCONF_ENABLED` is set to `yes`
 HYBRID_DSD_ENABLED|Hybrid dsd is enabled by default, set to `no` to disable. Disabled when at least one PulseAudio output is created.
 OPUS_DECODER_ENABLED|Defaults to `yes`, if set to `no`, the opus decoder will be disabled.
+MIXRAMP_ANALYZER_ENABLED|Enable MixRamp support. Set to `yes` to enable
 AUDIO_BUFFER_SIZE|Adjust the size of the internal audio buffer. Default is `4 MB` (4 MiB).
 MAX_ADDITIONAL_OUTPUTS_BY_TYPE|The maximum number of outputs by type, defaults to `20`
 RESTORE_PAUSED|If set to `yes`, then MPD is put into pause mode instead of starting playback after startup. Default is `no`.
@@ -380,7 +381,6 @@ FIFO_OUTPUT_PATH|Path of the fifo file
 
 Refer to the MPD [documentation](https://mpd.readthedocs.io/en/stable/plugins.html#snapcast) for the meaning of the variables.  
 
-
 ### Examples
 
 See some usage examples [here](https://github.com/GioF71/mpd-alsa-docker/blob/main/doc/example-configurations.md).

app/bin/run-mpd.sh

@@ -717,6 +717,14 @@ echo "replaygain_missing_preamp \"${REPLAYGAIN_MISSING_PREAMP}\"" >> $MPD_ALSA_C
 echo "replaygain_limit \"${REPLAYGAIN_LIMIT}\"" >> $MPD_ALSA_CONFIG_FILE
 echo "volume_normalization \"${VOLUME_NORMALIZATION}\"" >> $MPD_ALSA_CONFIG_FILE
 
+## Enable MixRamp analyzer when requested
+if [[ "${MIXRAMP_ANALYZER_ENABLED^^}" == "YES" || "${MIXRAMP_ANALYZER_ENABLED^^}" == "Y" ]]; then
+    echo "mixramp_analyzer \"yes\"" >> $MPD_ALSA_CONFIG_FILE
+elif [[ -n "${MIXRAMP_ANALYZER_ENABLED^^}" ]] && ([[ "${MIXRAMP_ANALYZER_ENABLED^^}" != "NO" || "${MIXRAMP_ANALYZER_ENABLED^^}" != "N" ]]); then
+    echo "Invalid parameter MIXRAMP_ANALYZER_ENABLED=[${MIXRAMP_ANALYZER_ENABLED}]"
+    exit 9
+fi
+
 if [ -n "${SAMPLERATE_CONVERTER}" ]; then
     # try lookup
     sr_lookup="${samplerate_converters[${SAMPLERATE_CONVERTER}]}"

doc/change-history.md

@@ -2,6 +2,7 @@
 
 Date|Major Changes
 :---|:---
+2025-03-27|Add support for MixRamp (see issue [#380](https://github.com/GioF71/mpd-alsa-docker/issues/380))
 2025-03-27|Bump to version 0.24.2 (see issue [#436](https://github.com/GioF71/mpd-alsa-docker/issues/436))
 2025-03-24|Bump to version 0.24.1 (see issue [#434](https://github.com/GioF71/mpd-alsa-docker/issues/434))
 2025-02-21|Corrected wrong variables (see issue [#432](https://github.com/GioF71/mpd-alsa-docker/issues/432))