From f693bcf2ee13391f99b8ede5562047981e1f5968 Mon Sep 17 00:00:00 2001
From: Patrick Williams <pdwilliams@google.com>
Date: Fri, 2 Aug 2024 09:55:23 -0500
Subject: Add BufferReleaseChannel

BufferReleaseChannel will be used to communicate buffer releases from SurfaceFlinger to BLASTBufferQueue.

Bug: 294133380
Flag: com.android.graphics.libgui.flags.buffer_release_channel
Test: BufferReleaseChannelTest
Change-Id: Ic38e8eefc96abc0b2bbe780115b7628413e8b829
---
 libs/gui/SurfaceComposerClient.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'libs/gui/SurfaceComposerClient.cpp')

diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index f663600f9e..b5d9366185 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -2390,6 +2390,22 @@ SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setDropI
     return *this;
 }
 
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setBufferReleaseChannel(
+        const sp<SurfaceControl>& sc,
+        const std::shared_ptr<gui::BufferReleaseChannel::ProducerEndpoint>& channel) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+
+    s->what |= layer_state_t::eBufferReleaseChannelChanged;
+    s->bufferReleaseChannel = channel;
+
+    registerSurfaceControlForCallback(sc);
+    return *this;
+}
+
 // ---------------------------------------------------------------------------
 
 DisplayState& SurfaceComposerClient::Transaction::getDisplayState(const sp<IBinder>& token) {
-- 
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