feat(YouTube): Add Alternative thumbnails patch (ReVanced#2834)

Co-authored-by: oSumAtrIX <[email protected]>

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/annotations/AlternativeThumbnailsCompatibility.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("com.google.android.youtube", arrayOf("18.20.39", "18.23.35"))])
+@Target(AnnotationTarget.CLASS)
+internal annotation class AlternativeThumbnailsCompatibility

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/bytecode/fingerprints/CronetURLRequestCallbackOnFailureFingerprint.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+object CronetURLRequestCallbackOnFailureFingerprint : MethodFingerprint(
+    returnType = "V",
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    parameters =  listOf("Lorg/chromium/net/UrlRequest;", "Lorg/chromium/net/UrlResponseInfo;", "Lorg/chromium/net/CronetException;"),
+    customFingerprint = { methodDef, _ ->
+        methodDef.name == "onFailed"
+    }
+)

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/bytecode/fingerprints/CronetURLRequestCallbackOnResponseStartedFingerprint.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+// Acts as a parent fingerprint.
+object CronetURLRequestCallbackOnResponseStartedFingerprint : MethodFingerprint(
+    returnType = "V",
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    parameters =  listOf("Lorg/chromium/net/UrlRequest;", "Lorg/chromium/net/UrlResponseInfo;"),
+    strings = listOf(
+        "Content-Length",
+        "Content-Type",
+        "identity",
+        "application/x-protobuf"
+    ),
+    customFingerprint = { methodDef, _ ->
+        methodDef.name == "onResponseStarted"
+    }
+)

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/bytecode/fingerprints/CronetURLRequestCallbackOnSucceededFingerprint.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+object CronetURLRequestCallbackOnSucceededFingerprint : MethodFingerprint(
+    returnType = "V",
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    parameters =  listOf("Lorg/chromium/net/UrlRequest;", "Lorg/chromium/net/UrlResponseInfo;"),
+    customFingerprint = { methodDef, _ ->
+        methodDef.name == "onSucceeded"
+    }
+)

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/bytecode/fingerprints/MessageDigestImageUrlFingerprint.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+object MessageDigestImageUrlFingerprint : MethodFingerprint(
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.CONSTRUCTOR,
+    parameters =  listOf("Ljava/lang/String;", "L")
+)

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/bytecode/fingerprints/MessageDigestImageUrlParentFingerprint.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+object MessageDigestImageUrlParentFingerprint : MethodFingerprint(
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    returnType =  "Ljava/lang/String;",
+    parameters = listOf(),
+    strings = listOf("@#&=*+-_.,:!?()/~'%;\$"),
+)

src/main/kotlin/app/revanced/patches/youtube/layout/alternativethumbnails/bytecode/patch/AlternativeThumbnailsPatch.kt

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+package app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint.Companion.resolve
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
+import app.revanced.patches.shared.settings.preference.impl.ArrayResource
+import app.revanced.patches.shared.settings.preference.impl.ListPreference
+import app.revanced.patches.shared.settings.preference.impl.NonInteractivePreference
+import app.revanced.patches.shared.settings.preference.impl.PreferenceScreen
+import app.revanced.patches.shared.settings.preference.impl.StringResource
+import app.revanced.patches.shared.settings.preference.impl.SwitchPreference
+import app.revanced.patches.youtube.layout.alternativethumbnails.annotations.AlternativeThumbnailsCompatibility
+import app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints.CronetURLRequestCallbackOnFailureFingerprint
+import app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints.CronetURLRequestCallbackOnResponseStartedFingerprint
+import app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints.CronetURLRequestCallbackOnSucceededFingerprint
+import app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints.MessageDigestImageUrlFingerprint
+import app.revanced.patches.youtube.layout.alternativethumbnails.bytecode.fingerprints.MessageDigestImageUrlParentFingerprint
+import app.revanced.patches.youtube.misc.integrations.patch.IntegrationsPatch
+import app.revanced.patches.youtube.misc.settings.bytecode.patch.SettingsPatch
+
+@Patch
+@DependsOn([IntegrationsPatch::class, SettingsPatch::class])
+@Name("Alternative thumbnails")
+@AlternativeThumbnailsCompatibility
+@Description("Adds an option to replace video thumbnails with still image captures of the video.")
+class AlternativeThumbnailsPatch : BytecodePatch(
+    listOf(MessageDigestImageUrlParentFingerprint, CronetURLRequestCallbackOnResponseStartedFingerprint)
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        SettingsPatch.PreferenceScreen.LAYOUT.addPreferences(
+            PreferenceScreen(
+                "revanced_alt_thumbnails_preference_screen",
+                StringResource("revanced_alt_thumbnails_preference_screen_title", "Alternative thumbnails"),
+                listOf(
+                    SwitchPreference(
+                        "revanced_alt_thumbnail",
+                        StringResource("revanced_alt_thumbnail_title", "Enable alternative thumbnails"),
+                        StringResource("revanced_alt_thumbnail_summary_on", "YouTube video stills shown"),
+                        StringResource("revanced_alt_thumbnail_summary_off", "Original YouTube thumbnails shown")
+                    ),
+                    ListPreference(
+                        "revanced_alt_thumbnail_type",
+                        StringResource("revanced_alt_thumbnail_type_title", "Video time to take the still from"),
+                        ArrayResource(
+                            "revanced_alt_thumbnail_type_entries",
+                            listOf(
+                                StringResource("revanced_alt_thumbnail_type_entry_1", "Beginning of video"),
+                                StringResource("revanced_alt_thumbnail_type_entry_2", "Middle of video"),
+                                StringResource("revanced_alt_thumbnail_type_entry_3", "End of video"),
+                            )
+                        ),
+                        ArrayResource(
+                            "revanced_alt_thumbnail_type_entry_values",
+                            listOf(
+                                StringResource("revanced_alt_thumbnail_type_entry_value_1", "1"),
+                                StringResource("revanced_alt_thumbnail_type_entry_value_2", "2"),
+                                StringResource("revanced_alt_thumbnail_type_entry_value_3", "3"),
+                            )
+                        )
+                    ),
+                    SwitchPreference(
+                        "revanced_alt_thumbnail_fast_quality",
+                        StringResource("revanced_alt_thumbnail_fast_quality_title", "Use fast alternative thumbnails"),
+                        StringResource("revanced_alt_thumbnail_fast_quality_summary_on", "Using medium quality stills. Thumbnails will load faster, but live streams, unreleased, or very old videos may show blank thumbnails"),
+                        StringResource("revanced_alt_thumbnail_fast_quality_summary_off", "Using high quality stills")
+                    ),
+                    NonInteractivePreference(
+                        StringResource("revanced_alt_thumbnail_about_title", "About"),
+                        StringResource("revanced_alt_thumbnail_about_summary", "Alternative thumbnails are still images from the beginning/middle/end of each video. No external API is used, as these images are built into YouTube")
+                    )
+                ),
+                StringResource("revanced_alt_thumbnails_preference_screen_summary", "Video thumbnail settings")
+            )
+        )
+
+        MessageDigestImageUrlParentFingerprint.result
+            ?: return MessageDigestImageUrlParentFingerprint.toErrorResult()
+        MessageDigestImageUrlFingerprint.resolve(context, MessageDigestImageUrlParentFingerprint.result!!.classDef)
+        MessageDigestImageUrlFingerprint.result?.apply {
+            loadImageUrlMethod = mutableMethod
+        } ?: return MessageDigestImageUrlFingerprint.toErrorResult()
+        addImageUrlHook(INTEGRATIONS_CLASS_DESCRIPTOR, true)
+
+
+        CronetURLRequestCallbackOnResponseStartedFingerprint.result
+            ?: return CronetURLRequestCallbackOnResponseStartedFingerprint.toErrorResult()
+        CronetURLRequestCallbackOnSucceededFingerprint.resolve(
+            context,
+            CronetURLRequestCallbackOnResponseStartedFingerprint.result!!.classDef
+        )
+        CronetURLRequestCallbackOnSucceededFingerprint.result?.apply {
+            loadImageSuccessCallbackMethod = mutableMethod
+        } ?: return CronetURLRequestCallbackOnSucceededFingerprint.toErrorResult()
+        addImageUrlSuccessCallbackHook(INTEGRATIONS_CLASS_DESCRIPTOR)
+
+
+        CronetURLRequestCallbackOnFailureFingerprint.resolve(
+            context,
+            CronetURLRequestCallbackOnResponseStartedFingerprint.result!!.classDef
+        )
+        CronetURLRequestCallbackOnFailureFingerprint.result?.apply {
+            loadImageErrorCallbackMethod = mutableMethod
+        } ?: return CronetURLRequestCallbackOnFailureFingerprint.toErrorResult()
+
+
+        return PatchResultSuccess()
+    }
+
+    internal companion object {
+        private const val INTEGRATIONS_CLASS_DESCRIPTOR =
+            "Lapp/revanced/integrations/patches/AlternativeThumbnailsPatch;"
+
+        private lateinit var loadImageUrlMethod: MutableMethod
+        private var loadImageUrlIndex = 0
+
+        private lateinit var loadImageSuccessCallbackMethod: MutableMethod
+        private var loadImageSuccessCallbackIndex = 0
+
+        private lateinit var loadImageErrorCallbackMethod: MutableMethod
+        private var loadImageErrorCallbackIndex = 0
+
+        /**
+         * @param highPriority If the hook should be called before all other hooks.
+         */
+        fun addImageUrlHook(targetMethodClass: String, highPriority: Boolean) {
+            loadImageUrlMethod.addInstructions(
+                if (highPriority) 0 else loadImageUrlIndex, """
+                    invoke-static { p1 }, $targetMethodClass->overrideImageURL(Ljava/lang/String;)Ljava/lang/String;
+                    move-result-object p1
+                """
+            )
+            loadImageUrlIndex += 2
+        }
+
+        /**
+         * If a connection completed, which includes normal 200 responses but also includes
+         * status 404 and other error like http responses.
+         */
+        fun addImageUrlSuccessCallbackHook(targetMethodClass: String) {
+            loadImageSuccessCallbackMethod.addInstruction(
+                loadImageSuccessCallbackIndex++,
+                "invoke-static { p2 }, $targetMethodClass->handleCronetSuccess(Lorg/chromium/net/UrlResponseInfo;)V"
+            )
+        }
+
+        /**
+         * If a connection outright failed to complete any connection.
+         */
+        fun addImageUrlErrorCallbackHook(targetMethodClass: String) {
+            loadImageErrorCallbackMethod.addInstruction(
+                loadImageErrorCallbackIndex++,
+                "invoke-static { p2, p3 }, $targetMethodClass->handleCronetFailure(Lorg/chromium/net/UrlResponseInfo;Ljava/io/IOException;)V"
+            )
+        }
+
+    }
+}