From 43c0add2b7d4b1a806aee00aa3a9f20948484bc0 Mon Sep 17 00:00:00 2001
From: Chih-Yu Huang <akahuang@google.com>
Date: Fri, 25 Dec 2020 12:01:10 +0900
Subject: [PATCH] virtio: video: change minimum input buffer of encoder to 1

The encoder should be able to start encoding when receiving 1 input
buffer. This CL changes the minimum input buffer from 2 to 1.

BUG=b:175745193
TEST=android.mediav2.cts.EncoderProfileLevelTest

Change-Id: I97060d0304cf41369467dc62d12bbae7e54b6b22
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2602299
Tested-by: Chih-Yu Huang <akahuang@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
Commit-Queue: Chih-Yu Huang <akahuang@chromium.org>
---
 devices/src/virtio/video/encoder/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/devices/src/virtio/video/encoder/mod.rs b/devices/src/virtio/video/encoder/mod.rs
index c0f8dd3e4c..79a80a286a 100644
--- a/devices/src/virtio/video/encoder/mod.rs
+++ b/devices/src/virtio/video/encoder/mod.rs
@@ -99,7 +99,7 @@ impl<T: EncoderSession> Stream<T> {
         desired_format: Format,
         encoder: &EncoderDevice<E>,
     ) -> VideoResult<Self> {
-        const MIN_BUFFERS: u32 = 2;
+        const MIN_BUFFERS: u32 = 1;
         const MAX_BUFFERS: u32 = 342;
         const DEFAULT_WIDTH: u32 = 640;
         const DEFAULT_HEIGHT: u32 = 480;