commit be6d6ce0ae1e2e3cc9f18e54bb24b2f7118f0cb5
author Ivan Podogov <ginkage@google.com> Tue Jan 03 21:20:33 2017 +0000
committer Myles Watson <mylesgw@google.com> Tue Mar 21 23:04:58 2017 +0000
tree dff907c659660ba720a7b0df6ddf4239de6698a9
parent cc7837d8d0d3f96df55b6dc7900cf5ac34bf9780

Reduce sniff intervals for active mode.

According to the Bluetooth HID specification, a pointing device
should have a recommended report rate of approximately 80 Hz, and
sniff interval of 18 slots for the sniff subrating mode.
Current settings set the sniff interval to 54 slots, which is
aproximately 29.6 Hz - not really enough to emulate a mouse.

Test: with a pointing device app
Change-Id: Ic3365137bcf3f5608ada37fbfa0c3233f6ef83d7

bta/include/bta_api.h

diff --git a/bta/include/bta_api.h b/bta/include/bta_api.h
index d5ed42e..e27ba43 100644
--- a/bta/include/bta_api.h
+++ b/bta/include/bta_api.h
@@ -958,8 +958,8 @@
 #endif
 
 #ifndef BTA_DM_PM_SNIFF4_MAX
-#define BTA_DM_PM_SNIFF4_MAX 54
-#define BTA_DM_PM_SNIFF4_MIN 30
+#define BTA_DM_PM_SNIFF4_MAX 18
+#define BTA_DM_PM_SNIFF4_MIN 10
 #define BTA_DM_PM_SNIFF4_ATTEMPT 4
 #define BTA_DM_PM_SNIFF4_TIMEOUT 1
 #endif