feat(Prime Video): Add Playback speed patch

extensions/primevideo/src/main/java/app/revanced/extension/primevideo/videoplayer/PlaybackSpeedPatch.java

@@ -0,0 +1,207 @@
+package app.revanced.extension.primevideo.videoplayer;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.graphics.RectF;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.graphics.Color;
+import android.graphics.drawable.Drawable;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.ColorFilter;
+import android.graphics.PixelFormat;
+import java.util.Arrays;
+
+import app.revanced.extension.shared.Logger;
+import app.revanced.extension.shared.Utils;
+
+import com.amazon.video.sdk.player.Player;
+
+public class PlaybackSpeedPatch {
+    private static Player player;
+    private static final float[] SPEED_VALUES = {0.5f, 0.7f, 0.8f, 0.9f, 0.95f, 1.0f, 1.05f, 1.1f, 1.2f, 1.3f, 1.5f, 2.0f};
+    private static final String SPEED_BUTTON_TAG = "speed_overlay";
+
+    public static void setPlayer(Player playerInstance) {
+        player = playerInstance;
+        if (player != null) {
+            // Reset playback rate when switching between episodes to ensure correct display.
+            player.setPlaybackRate(1.0f);
+        }
+    }
+
+    public static void initializeSpeedOverlay(View userControlsView) {
+        try {
+            LinearLayout buttonContainer = Utils.getChildViewByResourceName(userControlsView, "ButtonContainerPlayerTop");
+
+            // If the speed overlay exists we should return early.
+            if (Utils.getChildView(buttonContainer, false, child ->
+                    child instanceof ImageView && SPEED_BUTTON_TAG.equals(child.getTag())) != null) {
+                return;
+            }
+
+            ImageView speedButton = createSpeedButton(userControlsView.getContext());
+            speedButton.setOnClickListener(v -> changePlaybackSpeed(speedButton));
+            buttonContainer.addView(speedButton, 0);
+
+        } catch (IllegalArgumentException e) {
+            Logger.printException(() -> "initializeSpeedOverlay, no button container found", e);
+        } catch (Exception e) {
+            Logger.printException(() -> "initializeSpeedOverlay failure", e);
+        }
+    }
+
+    private static ImageView createSpeedButton(Context context) {
+        ImageView speedButton = new ImageView(context);
+        speedButton.setContentDescription("Playback Speed");
+        speedButton.setTag(SPEED_BUTTON_TAG);
+        speedButton.setClickable(true);
+        speedButton.setFocusable(true);
+        speedButton.setScaleType(ImageView.ScaleType.CENTER);
+
+        SpeedIconDrawable speedIcon = new SpeedIconDrawable();
+        speedButton.setImageDrawable(speedIcon);
+
+        int buttonSize = Utils.dipToPixels(48);
+        speedButton.setMinimumWidth(buttonSize);
+        speedButton.setMinimumHeight(buttonSize);
+
+        return speedButton;
+    }
+
+    private static String[] getSpeedOptions() {
+        String[] options = new String[SPEED_VALUES.length];
+        for (int i = 0; i < SPEED_VALUES.length; i++) {
+            options[i] = SPEED_VALUES[i] + "x";
+        }
+        return options;
+    }
+
+    private static void changePlaybackSpeed(ImageView imageView) {
+        if (player == null) {
+            Logger.printException(() -> "Player not available");
+            return;
+        }
+
+        try {
+            player.pause();
+            AlertDialog dialog = createSpeedPlaybackDialog(imageView);
+            dialog.setOnDismissListener(dialogInterface -> player.play());
+            dialog.show();
+
+        } catch (Exception e) {
+            Logger.printException(() -> "changePlaybackSpeed", e);
+        }
+    }
+
+    private static AlertDialog createSpeedPlaybackDialog(ImageView imageView) {
+        Context context = imageView.getContext();
+        int currentSelection = getCurrentSpeedSelection();
+
+        return new AlertDialog.Builder(context)
+                .setTitle("Select Playback Speed")
+                .setSingleChoiceItems(getSpeedOptions(), currentSelection,
+                        PlaybackSpeedPatch::handleSpeedSelection)
+                .create();
+    }
+
+    private static int getCurrentSpeedSelection() {
+        try {
+            float currentRate = player.getPlaybackRate();
+            int index = Arrays.binarySearch(SPEED_VALUES, currentRate);
+            return Math.max(index, 0); // Use slowest speed if not found.
+        } catch (Exception e) {
+            Logger.printException(() -> "getCurrentSpeedSelection error getting current playback speed", e);
+            return 0;
+        }
+    }
+
+    private static void handleSpeedSelection(android.content.DialogInterface dialog, int selectedIndex) {
+        try {
+            float selectedSpeed = SPEED_VALUES[selectedIndex];
+            player.setPlaybackRate(selectedSpeed);
+            player.play();
+        } catch (Exception e) {
+            Logger.printException(() -> "handleSpeedSelection error setting playback speed", e);
+        } finally {
+            dialog.dismiss();
+        }
+    }
+}
+
+class SpeedIconDrawable extends Drawable {
+    private final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+
+    @Override
+    public void draw(Canvas canvas) {
+        int w = getBounds().width();
+        int h = getBounds().height();
+        float centerX = w / 2f;
+        // Position gauge in lower portion.
+        float centerY = h * 0.7f;
+        float radius = Math.min(w, h) / 2f * 0.8f;
+
+        paint.setColor(Color.WHITE);
+        paint.setStyle(Paint.Style.STROKE);
+        paint.setStrokeWidth(radius * 0.1f);
+
+        // Draw semicircle.
+        RectF oval = new RectF(centerX - radius, centerY - radius, centerX + radius, centerY + radius);
+        canvas.drawArc(oval, 180, 180, false, paint);
+
+        // Draw three tick marks.
+        paint.setStrokeWidth(radius * 0.06f);
+        for (int i = 0; i < 3; i++) {
+            float angle = 180 + (i * 45); // 180°, 225°, 270°.
+            float angleRad = (float) Math.toRadians(angle);
+
+            float startX = centerX + (radius * 0.8f) * (float) Math.cos(angleRad);
+            float startY = centerY + (radius * 0.8f) * (float) Math.sin(angleRad);
+            float endX = centerX + radius * (float) Math.cos(angleRad);
+            float endY = centerY + radius * (float) Math.sin(angleRad);
+
+            canvas.drawLine(startX, startY, endX, endY, paint);
+        }
+
+        // Draw needle.
+        paint.setStrokeWidth(radius * 0.08f);
+        float needleAngle = 200; // Slightly right of center.
+        float needleAngleRad = (float) Math.toRadians(needleAngle);
+
+        float needleEndX = centerX + (radius * 0.6f) * (float) Math.cos(needleAngleRad);
+        float needleEndY = centerY + (radius * 0.6f) * (float) Math.sin(needleAngleRad);
+
+        canvas.drawLine(centerX, centerY, needleEndX, needleEndY, paint);
+
+        // Center dot.
+        paint.setStyle(Paint.Style.FILL);
+        canvas.drawCircle(centerX, centerY, radius * 0.06f, paint);
+    }
+
+    @Override
+    public void setAlpha(int alpha) {
+        paint.setAlpha(alpha);
+    }
+
+    @Override
+    public void setColorFilter(ColorFilter colorFilter) {
+        paint.setColorFilter(colorFilter);
+    }
+
+    @Override
+    public int getOpacity() {
+        return PixelFormat.TRANSLUCENT;
+    }
+
+    @Override
+    public int getIntrinsicWidth() {
+        return Utils.dipToPixels(32);
+    }
+
+    @Override
+    public int getIntrinsicHeight() {
+        return Utils.dipToPixels(32);
+    }
+}

extensions/primevideo/stub/src/main/java/com/amazon/avod/media/playback/VideoPlayer.java

@@ -4,4 +4,10 @@ public interface VideoPlayer {
     long getCurrentPosition();
 
     void seekTo(long positionMs);
+
+    void pause();
+
+    void play();
+
+    boolean isPlaying();
 }

extensions/primevideo/stub/src/main/java/com/amazon/video/sdk/player/Player.java

@@ -0,0 +1,11 @@
+package com.amazon.video.sdk.player;
+
+public interface Player {
+    float getPlaybackRate();
+
+    void setPlaybackRate(float rate);
+
+    void play();
+
+    void pause();
+} 

patches/api/patches.api

@@ -476,6 +476,10 @@ public final class app/revanced/patches/primevideo/misc/permissions/RenamePermis
 	public static final fun getRenamePermissionsPatch ()Lapp/revanced/patcher/patch/ResourcePatch;
 }
 
+public final class app/revanced/patches/primevideo/video/speed/PlaybackSpeedPatchKt {
+	public static final fun getPlaybackSpeedPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
+}
+
 public final class app/revanced/patches/protonmail/account/RemoveFreeAccountsLimitPatchKt {
 	public static final fun getRemoveFreeAccountsLimitPatch ()Lapp/revanced/patcher/patch/ResourcePatch;
 }

patches/src/main/kotlin/app/revanced/patches/primevideo/ads/SkipAdsPatch.kt

@@ -12,7 +12,7 @@ val skipAdsPatch = bytecodePatch(
     name = "Skip ads",
     description = "Automatically skips video stream ads.",
 ) {
-    compatibleWith("com.amazon.avod.thirdpartyclient"("3.0.403.257"))
+    compatibleWith("com.amazon.avod.thirdpartyclient"("3.0.412.2947"))
 
     dependsOn(sharedExtensionPatch)
 

patches/src/main/kotlin/app/revanced/patches/primevideo/video/speed/Fingerprints.kt

@@ -0,0 +1,23 @@
+package app.revanced.patches.primevideo.video.speed
+
+import app.revanced.patcher.fingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+internal val playbackUserControlsInitializeFingerprint = fingerprint {
+    accessFlags(AccessFlags.PUBLIC)
+    parameters("Lcom/amazon/avod/playbackclient/PlaybackInitializationContext;")
+    returns("V")
+    custom { method, classDef ->
+        method.name == "initialize" && classDef.type == "Lcom/amazon/avod/playbackclient/activity/feature/PlaybackUserControlsFeature;"
+    }
+}
+
+internal val playbackUserControlsPrepareForPlaybackFingerprint = fingerprint {
+    accessFlags(AccessFlags.PUBLIC)
+    parameters("Lcom/amazon/avod/playbackclient/PlaybackContext;")
+    returns("V")
+    custom { method, classDef ->
+        method.name == "prepareForPlayback" && 
+        classDef.type == "Lcom/amazon/avod/playbackclient/activity/feature/PlaybackUserControlsFeature;"
+    }
+}

patches/src/main/kotlin/app/revanced/patches/primevideo/video/speed/PlaybackSpeedPatch.kt

@@ -0,0 +1,56 @@
+package app.revanced.patches.primevideo.video.speed
+
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
+import app.revanced.patcher.patch.bytecodePatch
+import app.revanced.patches.primevideo.misc.extension.sharedExtensionPatch
+import app.revanced.util.getReference
+import app.revanced.util.indexOfFirstInstructionOrThrow
+import com.android.tools.smali.dexlib2.Opcode
+import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
+import com.android.tools.smali.dexlib2.iface.reference.FieldReference
+
+private const val EXTENSION_CLASS_DESCRIPTOR = 
+    "Lapp/revanced/extension/primevideo/videoplayer/PlaybackSpeedPatch;"
+
+val playbackSpeedPatch = bytecodePatch(
+    name = "Playback speed",
+    description = "Adds playback speed controls to the video player.",
+) {
+    dependsOn(
+        sharedExtensionPatch,
+    )
+
+    compatibleWith(
+        "com.amazon.avod.thirdpartyclient"("3.0.412.2947")
+    )
+
+    execute {
+        playbackUserControlsInitializeFingerprint.method.apply {
+            val getIndex = indexOfFirstInstructionOrThrow {
+                opcode == Opcode.IPUT_OBJECT && 
+                getReference<FieldReference>()?.name == "mUserControls"
+            }
+
+            val getRegister = getInstruction<OneRegisterInstruction>(getIndex).registerA
+
+            addInstructions(
+                getIndex + 1,
+                """
+                invoke-static { v$getRegister }, $EXTENSION_CLASS_DESCRIPTOR->initializeSpeedOverlay(Landroid/view/View;)V
+                """
+            )
+        }
+
+        playbackUserControlsPrepareForPlaybackFingerprint.method.apply {
+            addInstructions(
+                0,
+                """
+                invoke-virtual { p1 }, Lcom/amazon/avod/playbackclient/PlaybackContext;->getPlayer()Lcom/amazon/video/sdk/player/Player;
+                move-result-object v0
+                invoke-static { v0 }, $EXTENSION_CLASS_DESCRIPTOR->setPlayer(Lcom/amazon/video/sdk/player/Player;)V
+                """
+            )
+        }
+    }
+}