Add a flag to control whether input bitmap resampling can be skipped

Add DefaultVideosFrameProcessor experimental flag that controls
whether input Bitmaps are sampled once for a repeating sequence of
output frames with the same contents, or once for each output frame.

PiperOrigin-RevId: 637921350

libraries/effect/src/main/java/androidx/media3/effect/BitmapTextureManager.java

@@ -46,6 +46,7 @@
   // The queue holds all bitmaps with one or more frames pending to be sent downstream.
   private final Queue<BitmapFrameSequenceInfo> pendingBitmaps;
   private final GlObjectsProvider glObjectsProvider;
+  private final boolean signalRepeatingSequence;
 
   private @MonotonicNonNull RepeatingGainmapShaderProgram repeatingGainmapShaderProgram;
   @Nullable private GlTextureInfo currentSdrGlTextureInfo;
@@ -59,13 +60,18 @@
    * @param glObjectsProvider The {@link GlObjectsProvider} for using EGL and GLES.
    * @param videoFrameProcessingTaskExecutor The {@link VideoFrameProcessingTaskExecutor} that the
    *     methods of this class run on.
+   * @param signalRepeatingSequence Whether to repeat each input bitmap unchanged as a sequence of
+   *     output frames. Defaults to {@code false}. That is, each output frame is treated as a new
+   *     input bitmap.
    */
   public BitmapTextureManager(
       GlObjectsProvider glObjectsProvider,
-      VideoFrameProcessingTaskExecutor videoFrameProcessingTaskExecutor) {
+      VideoFrameProcessingTaskExecutor videoFrameProcessingTaskExecutor,
+      boolean signalRepeatingSequence) {
     super(videoFrameProcessingTaskExecutor);
     this.glObjectsProvider = glObjectsProvider;
     pendingBitmaps = new LinkedBlockingQueue<>();
+    this.signalRepeatingSequence = signalRepeatingSequence;
   }
 
   /**
@@ -215,7 +221,9 @@ private void updateCurrentGlTextureInfo(FrameInfo frameInfo, Bitmap bitmap)
       if (Util.SDK_INT >= 34 && bitmap.hasGainmap()) {
         checkNotNull(repeatingGainmapShaderProgram).setGainmap(checkNotNull(bitmap.getGainmap()));
       }
-      checkNotNull(repeatingGainmapShaderProgram).signalNewRepeatingFrameSequence();
+      if (signalRepeatingSequence) {
+        checkNotNull(repeatingGainmapShaderProgram).signalNewRepeatingFrameSequence();
+      }
     } catch (GlUtil.GlException e) {
       throw VideoFrameProcessingException.from(e);
     }

libraries/effect/src/main/java/androidx/media3/effect/DefaultVideoFrameProcessor.java

@@ -143,6 +143,7 @@ public static final class Builder {
       private int textureOutputCapacity;
       private boolean requireRegisteringAllInputFrames;
       private boolean experimentalAdjustSurfaceTextureTransformationMatrix;
+      private boolean experimentalRepeatInputBitmapWithoutResampling;
 
       /** Creates an instance. */
       public Builder() {
@@ -159,6 +160,8 @@ private Builder(Factory factory) {
         requireRegisteringAllInputFrames = !factory.repeatLastRegisteredFrame;
         experimentalAdjustSurfaceTextureTransformationMatrix =
             factory.experimentalAdjustSurfaceTextureTransformationMatrix;
+        experimentalRepeatInputBitmapWithoutResampling =
+            factory.experimentalRepeatInputBitmapWithoutResampling;
       }
 
       /**
@@ -276,6 +279,21 @@ public Builder setExperimentalAdjustSurfaceTextureTransformationMatrix(
         return this;
       }
 
+      /**
+       * Sets whether {@link BitmapTextureManager} will sample from the input bitmap only once for a
+       * sequence of output frames.
+       *
+       * <p>Defaults to {@code false}. That is, each output frame will sample from the full
+       * resolution input bitmap.
+       */
+      @CanIgnoreReturnValue
+      public Builder setExperimentalRepeatInputBitmapWithoutResampling(
+          boolean experimentalRepeatInputBitmapWithoutResampling) {
+        this.experimentalRepeatInputBitmapWithoutResampling =
+            experimentalRepeatInputBitmapWithoutResampling;
+        return this;
+      }
+
       /** Builds an {@link DefaultVideoFrameProcessor.Factory} instance. */
       public DefaultVideoFrameProcessor.Factory build() {
         return new DefaultVideoFrameProcessor.Factory(
@@ -285,7 +303,8 @@ public DefaultVideoFrameProcessor.Factory build() {
             executorService,
             textureOutputListener,
             textureOutputCapacity,
-            experimentalAdjustSurfaceTextureTransformationMatrix);
+            experimentalAdjustSurfaceTextureTransformationMatrix,
+            experimentalRepeatInputBitmapWithoutResampling);
       }
     }
 
@@ -296,6 +315,7 @@ public DefaultVideoFrameProcessor.Factory build() {
     @Nullable private final GlTextureProducer.Listener textureOutputListener;
     private final int textureOutputCapacity;
     private final boolean experimentalAdjustSurfaceTextureTransformationMatrix;
+    private final boolean experimentalRepeatInputBitmapWithoutResampling;
 
     private Factory(
         @WorkingColorSpace int sdrWorkingColorSpace,
@@ -304,7 +324,8 @@ private Factory(
         @Nullable ExecutorService executorService,
         @Nullable GlTextureProducer.Listener textureOutputListener,
         int textureOutputCapacity,
-        boolean experimentalAdjustSurfaceTextureTransformationMatrix) {
+        boolean experimentalAdjustSurfaceTextureTransformationMatrix,
+        boolean experimentalRepeatInputBitmapWithoutResampling) {
       this.sdrWorkingColorSpace = sdrWorkingColorSpace;
       this.repeatLastRegisteredFrame = repeatLastRegisteredFrame;
       this.glObjectsProvider = glObjectsProvider;
@@ -313,6 +334,8 @@ private Factory(
       this.textureOutputCapacity = textureOutputCapacity;
       this.experimentalAdjustSurfaceTextureTransformationMatrix =
           experimentalAdjustSurfaceTextureTransformationMatrix;
+      this.experimentalRepeatInputBitmapWithoutResampling =
+          experimentalRepeatInputBitmapWithoutResampling;
     }
 
     public Builder buildUpon() {
@@ -376,7 +399,8 @@ public DefaultVideoFrameProcessor create(
                       textureOutputListener,
                       textureOutputCapacity,
                       repeatLastRegisteredFrame,
-                      experimentalAdjustSurfaceTextureTransformationMatrix));
+                      experimentalAdjustSurfaceTextureTransformationMatrix,
+                      experimentalRepeatInputBitmapWithoutResampling));
 
       try {
         return defaultVideoFrameProcessorFuture.get();
@@ -745,7 +769,8 @@ private static DefaultVideoFrameProcessor createOpenGlObjectsAndFrameProcessor(
       @Nullable GlTextureProducer.Listener textureOutputListener,
       int textureOutputCapacity,
       boolean repeatLastRegisteredFrame,
-      boolean experimentalAdjustSurfaceTextureTransformationMatrix)
+      boolean experimentalAdjustSurfaceTextureTransformationMatrix,
+      boolean experimentalRepeatInputBitmapWithoutResampling)
       throws GlUtil.GlException, VideoFrameProcessingException {
     EGLDisplay eglDisplay = GlUtil.getDefaultEglDisplay();
     int[] configAttributes =
@@ -777,7 +802,8 @@ private static DefaultVideoFrameProcessor createOpenGlObjectsAndFrameProcessor(
             /* samplingShaderProgramErrorListener= */ listener::onError,
             sdrWorkingColorSpace,
             repeatLastRegisteredFrame,
-            experimentalAdjustSurfaceTextureTransformationMatrix);
+            experimentalAdjustSurfaceTextureTransformationMatrix,
+            experimentalRepeatInputBitmapWithoutResampling);
 
     FinalShaderProgramWrapper finalShaderProgramWrapper =
         new FinalShaderProgramWrapper(

libraries/effect/src/main/java/androidx/media3/effect/InputSwitcher.java

@@ -67,7 +67,8 @@ public InputSwitcher(
       GlShaderProgram.ErrorListener samplingShaderProgramErrorListener,
       @WorkingColorSpace int sdrWorkingColorSpace,
       boolean repeatLastRegisteredFrame,
-      boolean experimentalAdjustSurfaceTextureTransformationMatrix)
+      boolean experimentalAdjustSurfaceTextureTransformationMatrix,
+      boolean experimentalRepeatInputBitmapWithoutResampling)
       throws VideoFrameProcessingException {
     this.context = context;
     this.outputColorInfo = outputColorInfo;
@@ -91,7 +92,11 @@ public InputSwitcher(
                 experimentalAdjustSurfaceTextureTransformationMatrix)));
     inputs.put(
         INPUT_TYPE_BITMAP,
-        new Input(new BitmapTextureManager(glObjectsProvider, videoFrameProcessingTaskExecutor)));
+        new Input(
+            new BitmapTextureManager(
+                glObjectsProvider,
+                videoFrameProcessingTaskExecutor,
+                /* signalRepeatingSequence= */ experimentalRepeatInputBitmapWithoutResampling)));
     inputs.put(
         INPUT_TYPE_TEXTURE_ID,
         new Input(new TexIdTextureManager(glObjectsProvider, videoFrameProcessingTaskExecutor)));

libraries/transformer/src/androidTest/java/androidx/media3/transformer/mh/TranscodeSpeedTest.java

@@ -23,11 +23,11 @@
 
 import android.content.Context;
 import android.net.Uri;
-import android.os.Build;
 import androidx.media3.common.Format;
 import androidx.media3.common.MediaItem;
 import androidx.media3.common.MimeTypes;
 import androidx.media3.common.util.Util;
+import androidx.media3.effect.DefaultVideoFrameProcessor;
 import androidx.media3.effect.Presentation;
 import androidx.media3.transformer.AndroidTestUtil;
 import androidx.media3.transformer.EditedMediaItem;
@@ -103,9 +103,22 @@ public void exportImage_to720p_completesWithHighThroughput() throws Exception {
         testId,
         /* inputFormat= */ AndroidTestUtil.MP4_LONG_ASSET_WITH_INCREASING_TIMESTAMPS_FORMAT,
         outputFormat);
+    DefaultVideoFrameProcessor.Factory videoFrameProcessorFactory =
+        new DefaultVideoFrameProcessor.Factory.Builder()
+            .setExperimentalRepeatInputBitmapWithoutResampling(true)
+            .build();
     Transformer transformer =
-        new Transformer.Builder(context).setVideoMimeType(MimeTypes.VIDEO_H264).build();
-    boolean isHighPerformance = Util.SDK_INT >= 31 && Build.SOC_MODEL.startsWith("Tensor");
+        new Transformer.Builder(context)
+            .setVideoMimeType(MimeTypes.VIDEO_H264)
+            .setVideoFrameProcessorFactory(videoFrameProcessorFactory)
+            .build();
+    boolean isHighPerformance =
+        Ascii.toLowerCase(Util.MODEL).contains("pixel")
+            && (Ascii.toLowerCase(Util.MODEL).contains("6")
+                || Ascii.toLowerCase(Util.MODEL).contains("7")
+                || Ascii.toLowerCase(Util.MODEL).contains("8")
+                || Ascii.toLowerCase(Util.MODEL).contains("fold")
+                || Ascii.toLowerCase(Util.MODEL).contains("tablet"));
     if (Util.SDK_INT == 33 && Ascii.toLowerCase(Util.MODEL).contains("pixel 6")) {
       // Pixel 6 is usually quick, unless it's on API 33.
       isHighPerformance = false;