From 9d4d6c101d90d4a1d1ca9413cf3eb89d1f1898d6 Mon Sep 17 00:00:00 2001
From: Jamie Gennis <jgennis@google.com>
Date: Sun, 27 Feb 2011 14:10:20 -0800
Subject: Add the MIN_UNDEQUEUED_BUFFERS query to ANW.

This change adds a new query to ANativeWindow for getting the minimum
number of buffers that must be left un-dequeued during the steady-state
operation of the ANativeWindow.

Change-Id: Ie8c461fc26b02ecde02ddb4f95bf763662cf1551
Related-Bug: 3356050
---
 libs/gui/SurfaceTexture.cpp | 5 +++++
 1 file changed, 5 insertions(+)

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

diff --git a/libs/gui/SurfaceTexture.cpp b/libs/gui/SurfaceTexture.cpp
index 223cf091e7..3bed959861 100644
--- a/libs/gui/SurfaceTexture.cpp
+++ b/libs/gui/SurfaceTexture.cpp
@@ -96,6 +96,11 @@ SurfaceTexture::~SurfaceTexture() {
 
 status_t SurfaceTexture::setBufferCount(int bufferCount) {
     LOGV("SurfaceTexture::setBufferCount");
+
+    if (bufferCount < MIN_BUFFER_SLOTS) {
+        return BAD_VALUE;
+    }
+
     Mutex::Autolock lock(mMutex);
     freeAllBuffers();
     mBufferCount = bufferCount;
-- 
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