commit dcf8a6210bdf2107671a545464501d82cf111d22
author Shuzhen Wang <shuzhenw@codeaurora.org> Thu Oct 10 12:14:42 2013 -0700
committer The Android Automerger <android-build@google.com> Thu Oct 10 16:26:32 2013 -0700
tree d6169f7891893edbcac2d363d1e7dbd9fb311a87
parent 98bb21d4b329bc5dfd30da3ffd906f4167063d21

Camera3: Change max inflight requests to 5

Maximum inflight request has direct impact on latency such
as shutter lag. Even if the real camera pipeline delay is
5, whenever HAL misses a request on SOF boundary, more requests
are accumulated in HAL. And eventually maximum number of
requests will be in flight.

Profiling shows saving of 100ms when changed from 7 to 5.

Bug: 10712902
Change-Id: Ib00d58a6045f8f545f127ec97f2800f8e3c9dfe6

camera/QCamera2/HAL3/QCamera3Channel.cpp

diff --git a/camera/QCamera2/HAL3/QCamera3Channel.cpp b/camera/QCamera2/HAL3/QCamera3Channel.cpp
index 75cb74e..fa95b87 100755
--- a/camera/QCamera2/HAL3/QCamera3Channel.cpp
+++ b/camera/QCamera2/HAL3/QCamera3Channel.cpp
@@ -702,7 +702,7 @@
     mMemory = NULL;
 }
 
-int QCamera3RegularChannel::kMaxBuffers = 7;
+int QCamera3RegularChannel::kMaxBuffers = 5;
 
 QCamera3MetadataChannel::QCamera3MetadataChannel(uint32_t cam_handle,
                     mm_camera_ops_t *cam_ops,