Don't let renderer input buffer get too big if codec not available.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=128082468

extensions/vp9/src/main/java/com/google/android/exoplayer2/ext/vp9/LibvpxVideoRenderer.java

@@ -157,6 +157,7 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
       return;
     }
 
+    if (isRendererAvailable()) {
       try {
         if (decoder == null) {
           // If we don't have a decoder yet, we need to instantiate one.
@@ -177,6 +178,9 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
       } catch (VpxDecoderException e) {
         throw ExoPlaybackException.createForRenderer(e, getIndex());
       }
+    } else {
+      skipToKeyframeBefore(positionUs);
+    }
     decoderCounters.ensureUpdated();
   }
 
@@ -331,7 +335,8 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
 
   @Override
   public boolean isReady() {
-    if (format != null && (isSourceReady() || outputBuffer != null) && renderedFirstFrame) {
+    if (format != null && (isSourceReady() || outputBuffer != null)
+        && (renderedFirstFrame || !isRendererAvailable())) {
       // Ready. If we were joining then we've now joined, so clear the joining deadline.
       joiningDeadlineMs = -1;
       return true;
@@ -385,15 +390,19 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
     outputBuffer = null;
     format = null;
     try {
+      releaseDecoder();
+    } finally {
+      decoderCounters.ensureUpdated();
+      eventDispatcher.disabled(decoderCounters);
+    }
+  }
+
+  private void releaseDecoder() {
     if (decoder != null) {
       decoder.release();
       decoder = null;
       decoderCounters.codecReleaseCount++;
     }
-    } finally {
-      decoderCounters.ensureUpdated();
-      eventDispatcher.disabled(decoderCounters);
-    }
   }
 
   private boolean readFormat() {
@@ -428,9 +437,7 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
     this.surface = surface;
     outputBufferRenderer = null;
     outputMode = (surface != null) ? VpxDecoder.OUTPUT_MODE_RGB : VpxDecoder.OUTPUT_MODE_NONE;
-    if (decoder != null) {
+    updateDecoder();
-      decoder.setOutputMode(outputMode);
-    }
     drawnToSurface = false;
   }
 
@@ -442,10 +449,22 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
     surface = null;
     outputMode = (outputBufferRenderer != null) ? VpxDecoder.OUTPUT_MODE_YUV
         : VpxDecoder.OUTPUT_MODE_NONE;
+    updateDecoder();
+  }
+
+  private void updateDecoder() {
     if (decoder != null) {
+      if (outputMode == VpxDecoder.OUTPUT_MODE_NONE) {
+        releaseDecoder();
+      } else {
         decoder.setOutputMode(outputMode);
       }
     }
+  }
+
+  private boolean isRendererAvailable() {
+    return surface != null || outputBufferRenderer != null;
+  }
 
   private void maybeNotifyVideoSizeChanged(final int width, final int height) {
     if (previousWidth != width || previousHeight != height) {

library/src/main/java/com/google/android/exoplayer2/BaseRenderer.java

@@ -263,4 +263,13 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
     return readEndOfStream ? streamIsFinal : stream.isReady();
   }
 
+  /**
+   * Attempts to skip to the keyframe before the specified time.
+   *
+   * @param timeUs The specified time.
+   */
+  protected void skipToKeyframeBefore(long timeUs) {
+    stream.skipToKeyframeBefore(timeUs);
+  }
+
 }

library/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java

@@ -477,6 +477,8 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       while (drainOutputBuffer(positionUs, elapsedRealtimeUs)) {}
       while (feedInputBuffer()) {}
       TraceUtil.endSection();
+    } else if (format != null) {
+      skipToKeyframeBefore(positionUs);
     }
     decoderCounters.ensureUpdated();
   }

library/src/main/java/com/google/android/exoplayer2/source/ExtractorMediaSource.java

@@ -610,6 +610,11 @@ public final class ExtractorMediaSource implements MediaPeriod, MediaSource,
       return ExtractorMediaSource.this.readData(track, formatHolder, buffer);
     }
 
+    @Override
+    public void skipToKeyframeBefore(long timeUs) {
+      sampleQueues[track].skipToKeyframeBefore(timeUs);
+    }
+
   }
 
   /**

library/src/main/java/com/google/android/exoplayer2/source/SampleStream.java

@@ -55,4 +55,11 @@ public interface SampleStream {
    */
   int readData(FormatHolder formatHolder, DecoderInputBuffer buffer);
 
+  /**
+   * Attempts to skip to the keyframe before the specified time.
+   *
+   * @param timeUs The specified time.
+   */
+  void skipToKeyframeBefore(long timeUs);
+
 }

library/src/main/java/com/google/android/exoplayer2/source/SingleSampleMediaSource.java

@@ -253,6 +253,11 @@ public final class SingleSampleMediaSource implements MediaPeriod, MediaSource,
     }
   }
 
+  @Override
+  public void skipToKeyframeBefore(long timeUs) {
+    // do nothing
+  }
+
   // Loader.Callback implementation.
 
   @Override

library/src/main/java/com/google/android/exoplayer2/source/chunk/ChunkSampleStream.java

@@ -192,6 +192,11 @@ public class ChunkSampleStream<T extends ChunkSource> implements SampleStream, S
     return sampleQueue.readData(formatHolder, buffer, loadingFinished, lastSeekPositionUs);
   }
 
+  @Override
+  public void skipToKeyframeBefore(long timeUs) {
+    sampleQueue.skipToKeyframeBefore(timeUs);
+  }
+
   // Loader.Callback implementation.
 
   @Override

library/src/main/java/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java

@@ -619,6 +619,11 @@ import java.util.List;
       return HlsSampleStreamWrapper.this.readData(group, formatHolder, buffer);
     }
 
+    @Override
+    public void skipToKeyframeBefore(long timeUs) {
+      sampleQueues.valueAt(group).skipToKeyframeBefore(timeUs);
+    }
+
   }
 
 }

library/src/main/java/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java

@@ -240,7 +240,7 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
 
   @Override
   public boolean isReady() {
-    if (renderedFirstFrame && super.isReady()) {
+    if ((renderedFirstFrame || super.shouldInitCodec()) && super.isReady()) {
       // Ready. If we were joining then we've now joined, so clear the joining deadline.
       joiningDeadlineMs = -1;
       return true;