add VoicePreset enum for voice anonymization

Define preset options (None, Deep, High, Neutral)

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/actions/uploads/VoicePreset.kt

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.actions.uploads
+
+import androidx.annotation.StringRes
+import com.vitorpamplona.amethyst.R
+
+enum class VoicePreset(
+    val pitchFactor: Double,
+    val formantShift: Double,
+    @StringRes val labelRes: Int,
+) {
+    NONE(1.0, 0.0, R.string.voice_preset_none),
+    DEEP(0.75, -3.0, R.string.voice_preset_deep),
+    HIGH(1.4, 4.0, R.string.voice_preset_high),
+    NEUTRAL(1.0, -2.0, R.string.voice_preset_neutral),
+}

amethyst/src/main/res/values/strings.xml

@@ -184,6 +184,10 @@
     <string name="upload_error_voice_message_unexpected_state">Unexpected upload state</string>
     <string name="upload_error_voice_message_nip95_not_supported">NIP-95 is not supported for voice messages yet</string>
     <string name="upload_error_voice_message_exception">Voice upload failed: %1$s</string>
+    <string name="voice_preset_none">None</string>
+    <string name="voice_preset_deep">Deep</string>
+    <string name="voice_preset_high">High</string>
+    <string name="voice_preset_neutral">Neutral</string>
     <string name="user_does_not_have_a_lightning_address_setup_to_receive_sats">User does not have a lightning address set up to receive sats</string>
     <string name="reply_here">"reply here.. "</string>
     <string name="copies_the_note_id_to_the_clipboard_for_sharing">Copies the Note ID to the clipboard for sharing in Nostr</string>