From f0ab6a0169c6617ea5054b801f331aebe9b93bd2 Mon Sep 17 00:00:00 2001
From: Xavier Lepaul <xalep@google.com>
Date: Thu, 11 Jun 2020 14:03:56 +0200
Subject: [PATCH] Add a way to force a frame to be sent from
 SurfaceTextureHelper
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This allows forcing a minimum frame rate if the producer doesn’t update
the SurfaceTexture often.

This needs to be done in SurfaceTextureHelper to keep the
synchronization of the texture access consistent.

Bug: b/149383039
Change-Id: I0e3c82dd51d486b931bd8dda0fd9d5cdb1a90901
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177001
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Xavier Lepaul <xalep@google.com>
Cr-Commit-Position: refs/heads/master@{#31504}
---
 sdk/android/api/org/webrtc/SurfaceTextureHelper.java | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/sdk/android/api/org/webrtc/SurfaceTextureHelper.java b/sdk/android/api/org/webrtc/SurfaceTextureHelper.java
index 3522a87487..b7b028f5ae 100644
--- a/sdk/android/api/org/webrtc/SurfaceTextureHelper.java
+++ b/sdk/android/api/org/webrtc/SurfaceTextureHelper.java
@@ -263,6 +263,17 @@ public class SurfaceTextureHelper {
     });
   }
 
+  /**
+   * Forces a frame to be produced. If no new frame is available, the last frame is sent to the
+   * listener again.
+   */
+  public void forceFrame() {
+    handler.post(() -> {
+      hasPendingTexture = true;
+      tryDeliverTextureFrame();
+    });
+  }
+
   /** Set the rotation of the delivered frames. */
   public void setFrameRotation(int rotation) {
     handler.post(() -> this.frameRotation = rotation);