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https://github.com/revanced/revanced-patches
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feat(youtube): remember-playback-rate patch
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package app.revanced.patches.youtube.misc.video.speed.remember.annotation
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import app.revanced.patcher.annotation.Compatibility
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import app.revanced.patcher.annotation.Package
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@Compatibility(
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[Package(
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"com.google.android.youtube", arrayOf("17.49.37")
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)]
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)
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@Target(AnnotationTarget.CLASS)
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@Retention(AnnotationRetention.RUNTIME)
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internal annotation class RememberPlaybackRateCompatibility
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package app.revanced.patches.youtube.misc.video.speed.remember.fingerprint
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import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
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object ChangePlaybackRateFragmentStateFingerprint : MethodFingerprint(
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"V",
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strings = listOf("PLAYBACK_RATE_MENU_BOTTOM_SHEET_FRAGMENT")
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)
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package app.revanced.patches.youtube.misc.video.speed.remember.fingerprint
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import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
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object InitializePlaybackRateValuesFingerprint : MethodFingerprint(
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parameters = listOf("[L", "I")
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)
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package app.revanced.patches.youtube.misc.video.speed.remember.fingerprint
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import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
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import org.jf.dexlib2.Opcode
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object OnPlaybackRateItemClickFingerprint : MethodFingerprint(
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customFingerprint = { it.name == "onItemClick" },
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opcodes = listOf(
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Opcode.IGET_OBJECT,
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Opcode.INVOKE_VIRTUAL
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)
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)
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package app.revanced.patches.youtube.misc.video.speed.remember.patch
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import app.revanced.extensions.toErrorResult
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import app.revanced.patcher.annotation.Description
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import app.revanced.patcher.annotation.Name
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import app.revanced.patcher.annotation.Version
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import app.revanced.patcher.data.BytecodeContext
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import app.revanced.patcher.extensions.addInstruction
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import app.revanced.patcher.extensions.addInstructions
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import app.revanced.patcher.extensions.instruction
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import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
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import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint.Companion.resolve
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import app.revanced.patcher.patch.*
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import app.revanced.patcher.patch.annotations.DependsOn
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import app.revanced.patcher.patch.annotations.Patch
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import app.revanced.patcher.util.smali.ExternalLabel
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import app.revanced.patches.shared.settings.preference.impl.StringResource
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import app.revanced.patches.shared.settings.preference.impl.SwitchPreference
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import app.revanced.patches.youtube.misc.integrations.patch.IntegrationsPatch
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import app.revanced.patches.youtube.misc.settings.bytecode.patch.SettingsPatch
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import app.revanced.patches.youtube.misc.video.speed.remember.annotation.RememberPlaybackRateCompatibility
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import app.revanced.patches.youtube.misc.video.speed.remember.fingerprint.ChangePlaybackRateFragmentStateFingerprint
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import app.revanced.patches.youtube.misc.video.speed.remember.fingerprint.InitializePlaybackRateValuesFingerprint
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import app.revanced.patches.youtube.misc.video.speed.remember.fingerprint.OnPlaybackRateItemClickFingerprint
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import org.jf.dexlib2.Opcode
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import org.jf.dexlib2.iface.instruction.FiveRegisterInstruction
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import org.jf.dexlib2.iface.instruction.ReferenceInstruction
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@Patch
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@Name("remember-playback-rate")
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@Description("Adds the ability to remember the playback rate you chose in the video playback rate flyout.")
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@DependsOn([IntegrationsPatch::class, SettingsPatch::class])
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@RememberPlaybackRateCompatibility
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@Version("0.0.1")
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class RememberPlaybackRatePatch : BytecodePatch(
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listOf(ChangePlaybackRateFragmentStateFingerprint)
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) {
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private companion object {
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const val INTEGRATIONS_CLASS_DESCRIPTOR =
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"Lapp/revanced/integrations/patches/playback/speed/RememberPlaybackRatePatch;"
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fun MethodFingerprint.getReference(offsetFromPatternScanResultStartIndex: Int = 0) = this.result!!.let {
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val referenceInstruction = it.mutableMethod
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.instruction(it.scanResult.patternScanResult!!.startIndex + offsetFromPatternScanResultStartIndex) as ReferenceInstruction
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referenceInstruction.reference.toString()
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}
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fun BytecodeContext.resolveFingerprints() {
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ChangePlaybackRateFragmentStateFingerprint.result?.also {
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fun MethodFingerprint.resolve() = resolve(this@resolveFingerprints, it.classDef)
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OnPlaybackRateItemClickFingerprint.resolve()
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InitializePlaybackRateValuesFingerprint.resolve()
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} ?: throw ChangePlaybackRateFragmentStateFingerprint.toErrorResult()
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}
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}
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override fun execute(context: BytecodeContext): PatchResult {
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SettingsPatch.PreferenceScreen.MISC.addPreferences(
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SwitchPreference(
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"revanced_remember_playback_rate_last_selected",
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StringResource("revanced_remember_playback_rate_last_selected_title", "Remember playback rate changes"),
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true,
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StringResource(
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"revanced_remember_playback_rate_last_selected_summary_on",
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"Playback rate changes apply to all videos"
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),
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StringResource(
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"revanced_remember_playback_rate_last_selected_summary_off",
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"Playback rate changes only apply to the current video"
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)
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)
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)
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context.resolveFingerprints()
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// Set the remembered playback rate.
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InitializePlaybackRateValuesFingerprint.result!!.apply {
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// Infer everything necessary for setPlaybackRate()
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val playbackHandlerWrapperFieldReference =
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(object : MethodFingerprint(opcodes = listOf(Opcode.IF_EQZ)) {}).apply {
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OnPlaybackRateItemClickFingerprint.result!!.apply {
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resolve(
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context,
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method,
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classDef
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)
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}
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}.getReference(-1)
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val playbackHandlerWrapperImplementorClassReference = OnPlaybackRateItemClickFingerprint
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.getReference(-1)
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val playbackHandlerFieldReference = OnPlaybackRateItemClickFingerprint
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.getReference()
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val setPlaybackRateMethodReference = OnPlaybackRateItemClickFingerprint
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.getReference(1)
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mutableMethod.addInstructions(
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0,
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"""
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invoke-static { }, $INTEGRATIONS_CLASS_DESCRIPTOR->getRememberedPlaybackRate()F
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move-result v0
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# check if the playback rate is below 0 (when a playback rate was never remembered)
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const/4 v1, 0x0
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cmpg-float v1, v0, v1
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if-lez v1, :do_not_override
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# invoke setPlaybackRate
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iget-object v1, p0, $playbackHandlerWrapperFieldReference
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check-cast v1, $playbackHandlerWrapperImplementorClassReference
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iget-object v2, v1, $playbackHandlerFieldReference
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invoke-virtual {v2, v0}, $setPlaybackRateMethodReference
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""".trimIndent(),
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listOf(ExternalLabel("do_not_override", mutableMethod.instruction(0)))
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)
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}
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// Remember the selected playback rate.
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OnPlaybackRateItemClickFingerprint.result!!.apply {
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val setPlaybackRateIndex = scanResult.patternScanResult!!.endIndex
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val selectedPlaybackRateRegister =
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(mutableMethod.instruction(setPlaybackRateIndex) as FiveRegisterInstruction).registerD
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mutableMethod.addInstruction(
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setPlaybackRateIndex,
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"invoke-static { v$selectedPlaybackRateRegister }, $INTEGRATIONS_CLASS_DESCRIPTOR->rememberPlaybackRate(F)V"
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)
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}
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return PatchResultSuccess()
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}
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}
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