feat(player): Add video filters (#1698)

app/src/main/java/eu/kanade/tachiyomi/ui/player/PlayerActivity.kt

@@ -63,6 +63,7 @@ import eu.kanade.tachiyomi.ui.player.settings.sheets.ScreenshotOptionsSheet
 import eu.kanade.tachiyomi.ui.player.settings.sheets.StreamsCatalogSheet
 import eu.kanade.tachiyomi.ui.player.settings.sheets.VideoChaptersSheet
 import eu.kanade.tachiyomi.ui.player.settings.sheets.subtitle.SubtitleSettingsSheet
+import eu.kanade.tachiyomi.ui.player.settings.sheets.subtitle.VideoFilters
 import eu.kanade.tachiyomi.ui.player.settings.sheets.subtitle.toHexString
 import eu.kanade.tachiyomi.ui.player.viewer.ACTION_MEDIA_CONTROL
 import eu.kanade.tachiyomi.ui.player.viewer.AspectState
@@ -635,12 +636,20 @@ class PlayerActivity : BaseActivity() {
             )
         }
 
+        setVideoFilters()
+
         MPVLib.setOptionString("input-default-bindings", "yes")
 
         MPVLib.addLogObserver(playerObserver)
         player.addObserver(playerObserver)
     }
 
+    private fun setVideoFilters() {
+        VideoFilters.entries.forEach {
+            MPVLib.setPropertyInt(it.mpvProperty, it.preference(playerPreferences).get())
+        }
+    }
+
     private fun setupPlayerAudio() {
         with(playerPreferences) {
             audioManager = getSystemService(Context.AUDIO_SERVICE) as AudioManager

app/src/main/java/eu/kanade/tachiyomi/ui/player/settings/PlayerPreferences.kt

@@ -121,4 +121,10 @@ class PlayerPreferences(
     fun backgroundColorSubtitles() = preferenceStore.getInt("pref_background_color_subtitles", 0)
 
     fun mpvScripts() = preferenceStore.getBoolean("mpv_scripts", false)
+
+    fun brightnessFilter() = preferenceStore.getInt("pref_player_filter_brightness")
+    fun saturationFilter() = preferenceStore.getInt("pref_player_filter_saturation")
+    fun contrastFilter() = preferenceStore.getInt("pref_player_filter_contrast")
+    fun gammaFilter() = preferenceStore.getInt("pref_player_filter_gamma")
+    fun hueFilter() = preferenceStore.getInt("pref_player_filter_hue")
 }

app/src/main/java/eu/kanade/tachiyomi/ui/player/settings/sheets/subtitle/SubtitleSettingsSheet.kt

@@ -54,6 +54,7 @@ fun SubtitleSettingsSheet(
     TabbedDialog(
         onDismissRequest = onDismissRequest,
         tabTitles = persistentListOf(
+            stringResource(MR.strings.player_subtitle_settings_filters),
             stringResource(MR.strings.player_subtitle_settings_delay_tab),
             stringResource(MR.strings.player_subtitle_settings_font_tab),
             stringResource(MR.strings.player_subtitle_settings_color_tab),
@@ -66,9 +67,10 @@ fun SubtitleSettingsSheet(
                 .verticalScroll(rememberScrollState()),
         ) {
             when (page) {
-                0 -> StreamsDelayPage(screenModel)
-                1 -> SubtitleFontPage(screenModel)
-                2 -> SubtitleColorPage(screenModel)
+                0 -> FiltersPage(screenModel)
+                1 -> StreamsDelayPage(screenModel)
+                2 -> SubtitleFontPage(screenModel)
+                3 -> SubtitleColorPage(screenModel)
             }
         }
     }

app/src/main/java/eu/kanade/tachiyomi/ui/player/settings/sheets/subtitle/VideoFiltersPage.kt

@@ -0,0 +1,89 @@
+package eu.kanade.tachiyomi.ui.player.settings.sheets.subtitle
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Info
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import dev.icerock.moko.resources.StringResource
+import eu.kanade.tachiyomi.ui.player.settings.PlayerPreferences
+import eu.kanade.tachiyomi.ui.player.settings.PlayerSettingsScreenModel
+import `is`.xyz.mpv.MPVLib
+import tachiyomi.core.common.preference.Preference
+import tachiyomi.i18n.MR
+import tachiyomi.presentation.core.components.SliderItem
+import tachiyomi.presentation.core.i18n.stringResource
+import tachiyomi.presentation.core.util.collectAsState
+
+@Composable
+fun FiltersPage(
+    screenModel: PlayerSettingsScreenModel,
+    modifier: Modifier = Modifier,
+) {
+    if (!screenModel.preferences.gpuNext().get()) {
+        Row(
+            modifier = Modifier.padding(16.dp),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(16.dp),
+        ) {
+            Icon(Icons.Outlined.Info, null)
+            Text(stringResource(MR.strings.player_filters_warning))
+        }
+    }
+    Column(modifier) {
+        VideoFilters.entries.forEach { filter ->
+            val value by filter.preference(screenModel.preferences).collectAsState()
+            SliderItem(
+                label = stringResource(filter.title),
+                value = value,
+                valueText = value.toString(),
+                onChange = {
+                    filter.preference(screenModel.preferences).set(it)
+                    MPVLib.setPropertyInt(filter.mpvProperty, it)
+                },
+                max = 100,
+                min = -100,
+            )
+        }
+    }
+}
+
+enum class VideoFilters(
+    val title: StringResource,
+    val preference: (PlayerPreferences) -> Preference<Int>,
+    val mpvProperty: String,
+) {
+    BRIGHTNESS(
+        MR.strings.player_filters_brightness,
+        { it.brightnessFilter() },
+        "brightness",
+    ),
+    SATURATION(
+        MR.strings.player_filters_saturation,
+        { it.saturationFilter() },
+        "saturation",
+    ),
+    CONTRAST(
+        MR.strings.player_filters_contrast,
+        { it.contrastFilter() },
+        "contrast",
+    ),
+    GAMMA(
+        MR.strings.player_filters_gamma,
+        { it.gammaFilter() },
+        "gamma",
+    ),
+    HUE(
+        MR.strings.player_filters_hue,
+        { it.hueFilter() },
+        "hue",
+    ),
+}

i18n/src/commonMain/moko-resources/base/strings.xml

@@ -1108,9 +1108,16 @@
     <string name="pref_category_hide_hidden">Hide hidden categories from categories and storage screen</string>
     <string name="pref_update_anime_release_grace_period">Expected anime release grace period</string>
     <string name="player_subtitle_settings_example">Lorem ipsum dolor sit amet.</string>
+    <string name="player_subtitle_settings_filters">Filters</string>
     <string name="player_subtitle_settings_delay_tab">Delay</string>
     <string name="player_subtitle_settings_font_tab">Font</string>
     <string name="player_subtitle_settings_color_tab">Color</string>
+    <string name="player_filters_brightness">Brightness</string>
+    <string name="player_filters_saturation">Saturation</string>
+    <string name="player_filters_contrast">Contrast</string>
+    <string name="player_filters_gamma">Gamma</string>
+    <string name="player_filters_hue">Hue</string>
+    <string name="player_filters_warning">Some filters may not work your current video driver</string>
     <string name="player_subtitle_settings">Subtitle settings</string>
     <string name="player_add_external_audio">Add external audio</string>
     <string name="player_add_external_audio_intent">Select an audio file.</string>