1 files changed, 185 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java
new file mode 100644
index 0000000000..b09e8b759a
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.mozilla.thirdparty.com.google.android.exoplayer2.video;
+
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.OutputBuffer;
+import java.nio.ByteBuffer;
+
+/** Video decoder output buffer containing video frame data. */
+public class VideoDecoderOutputBuffer extends OutputBuffer {
+
+  /** Buffer owner. */
+  public interface Owner {
+
+    /**
+     * Releases the buffer.
+     *
+     * @param outputBuffer Output buffer.
+     */
+    void releaseOutputBuffer(VideoDecoderOutputBuffer outputBuffer);
+  }
+
+  // LINT.IfChange
+  public static final int COLORSPACE_UNKNOWN = 0;
+  public static final int COLORSPACE_BT601 = 1;
+  public static final int COLORSPACE_BT709 = 2;
+  public static final int COLORSPACE_BT2020 = 3;
+  // LINT.ThenChange(
+  //     ../../../../../../../../../../extensions/av1/src/main/jni/gav1_jni.cc,
+  //     ../../../../../../../../../../extensions/vp9/src/main/jni/vpx_jni.cc
+  // )
+
+  /** Decoder private data. */
+  public int decoderPrivate;
+
+  /** Output mode. */
+  @C.VideoOutputMode public int mode;
+  /** RGB buffer for RGB mode. */
+  @Nullable public ByteBuffer data;
+
+  public int width;
+  public int height;
+  @Nullable public ColorInfo colorInfo;
+
+  /** YUV planes for YUV mode. */
+  @Nullable public ByteBuffer[] yuvPlanes;
+
+  @Nullable public int[] yuvStrides;
+  public int colorspace;
+
+  /**
+   * Supplemental data related to the output frame, if {@link #hasSupplementalData()} returns true.
+   * If present, the buffer is populated with supplemental data from position 0 to its limit.
+   */
+  @Nullable public ByteBuffer supplementalData;
+
+  private final Owner owner;
+
+  /**
+   * Creates VideoDecoderOutputBuffer.
+   *
+   * @param owner Buffer owner.
+   */
+  public VideoDecoderOutputBuffer(Owner owner) {
+    this.owner = owner;
+  }
+
+  @Override
+  public void release() {
+    owner.releaseOutputBuffer(this);
+  }
+
+  /**
+   * Initializes the buffer.
+   *
+   * @param timeUs The presentation timestamp for the buffer, in microseconds.
+   * @param mode The output mode. One of {@link C#VIDEO_OUTPUT_MODE_NONE}, {@link
+   *     C#VIDEO_OUTPUT_MODE_YUV} and {@link C#VIDEO_OUTPUT_MODE_SURFACE_YUV}.
+   * @param supplementalData Supplemental data associated with the frame, or {@code null} if not
+   *     present. It is safe to reuse the provided buffer after this method returns.
+   */
+  public void init(
+      long timeUs, @C.VideoOutputMode int mode, @Nullable ByteBuffer supplementalData) {
+    this.timeUs = timeUs;
+    this.mode = mode;
+    if (supplementalData != null && supplementalData.hasRemaining()) {
+      addFlag(C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA);
+      int size = supplementalData.limit();
+      if (this.supplementalData == null || this.supplementalData.capacity() < size) {
+        this.supplementalData = ByteBuffer.allocate(size);
+      } else {
+        this.supplementalData.clear();
+      }
+      this.supplementalData.put(supplementalData);
+      this.supplementalData.flip();
+      supplementalData.position(0);
+    } else {
+      this.supplementalData = null;
+    }
+  }
+
+  /**
+   * Resizes the buffer based on the given stride. Called via JNI after decoding completes.
+   *
+   * @return Whether the buffer was resized successfully.
+   */
+  public boolean initForYuvFrame(int width, int height, int yStride, int uvStride, int colorspace) {
+    this.width = width;
+    this.height = height;
+    this.colorspace = colorspace;
+    int uvHeight = (int) (((long) height + 1) / 2);
+    if (!isSafeToMultiply(yStride, height) || !isSafeToMultiply(uvStride, uvHeight)) {
+      return false;
+    }
+    int yLength = yStride * height;
+    int uvLength = uvStride * uvHeight;
+    int minimumYuvSize = yLength + (uvLength * 2);
+    if (!isSafeToMultiply(uvLength, 2) || minimumYuvSize < yLength) {
+      return false;
+    }
+
+    // Initialize data.
+    if (data == null || data.capacity() < minimumYuvSize) {
+      data = ByteBuffer.allocateDirect(minimumYuvSize);
+    } else {
+      data.position(0);
+      data.limit(minimumYuvSize);
+    }
+
+    if (yuvPlanes == null) {
+      yuvPlanes = new ByteBuffer[3];
+    }
+
+    ByteBuffer data = this.data;
+    ByteBuffer[] yuvPlanes = this.yuvPlanes;
+
+    // Rewrapping has to be done on every frame since the stride might have changed.
+    yuvPlanes[0] = data.slice();
+    yuvPlanes[0].limit(yLength);
+    data.position(yLength);
+    yuvPlanes[1] = data.slice();
+    yuvPlanes[1].limit(uvLength);
+    data.position(yLength + uvLength);
+    yuvPlanes[2] = data.slice();
+    yuvPlanes[2].limit(uvLength);
+    if (yuvStrides == null) {
+      yuvStrides = new int[3];
+    }
+    yuvStrides[0] = yStride;
+    yuvStrides[1] = uvStride;
+    yuvStrides[2] = uvStride;
+    return true;
+  }
+
+  /**
+   * Configures the buffer for the given frame dimensions when passing actual frame data via {@link
+   * #decoderPrivate}. Called via JNI after decoding completes.
+   */
+  public void initForPrivateFrame(int width, int height) {
+    this.width = width;
+    this.height = height;
+  }
+
+  /**
+   * Ensures that the result of multiplying individual numbers can fit into the size limit of an
+   * integer.
+   */
+  private static boolean isSafeToMultiply(int a, int b) {
+    return a >= 0 && b >= 0 && !(b > 0 && a >= Integer.MAX_VALUE / b);
+  }
+}