h/q/d: Add binder-api support to change refresh-rate.

** Now, there are two ways for the clients to request
change in the refresh-rate of the target.
(a) Using metadata of the input-buffer.
(b) Using binder api added as part of this change.

** configureDynRefreshRate binder api provides three
op-modes which can be used as following:

(a) "DISABLE_METADATA_DYN_REFRESH_RATE" can be used by the
clients, to disallow display-hal from honoring refresh-rate
change requests, made by video-clients using the metadata.

For ex: This can be used during streaming use-cases
(Dash-playback, playback at WFD-sink,etc) where the idea
is not to change the refresh-rate, though video-client
requests for it using metadata, as video-clients cannot
distinguish between streaming and non-streaming usecases.

Usage:
adb shell service call display.qservice 18 i32 0 i32 0

(b) "ENABLE_METADATA_DYN_REFRESH_RATE" can be used by the
clients after DISABLE_METADATA_DYN_REFRESH_RATE, to once
again allow display-hal to be able to change refresh-rate
based on requests made by the video-clients using metadata.

For ex: This can be used by clients( Dash-playback,
WFD, etc) once they are done with their use-case.
WFD-framework will also use this when the wfd-session is
paused.

Usage:
adb shell service call display.qservice 18 i32 1 i32 0

(c) "SET_BINDER_DYN_REFRESH_RATE" can be used by the clients
to change the refresh-rate of the target using binder-api,
provided they have disallowed display from honoring the
refresh-rate requests made using metadata.

In other words, changing refresh-rate through this binder
api and using metadata approach cannot co-exist together.

Usage:
adb shell service call display.qservice 18 i32 2 i32 45
-- The refresh-rate set here will correspond to 45fps.

** Added property "persist.metadata_dynfps.disable" that
can be used by OEM's, to disable setting of refresh-rate
using the metadata.

Change-Id: I767fa174dcf1cfd061a578e96cd68af28e7dd36b

1 files changed, 2 insertions, 0 deletions

diff --git a/libqservice/IQService.h b/libqservice/IQService.h
index ea403349b..683c93c4e 100644
--- a/libqservice/IQService.h
+++ b/libqservice/IQService.h
@@ -55,6 +55,8 @@ public:
         DYNAMIC_DEBUG = 15,     // Enable more logging on the fly
         SET_IDLE_TIMEOUT = 16,  // Set idle timeout for GPU fallback
         TOGGLE_BWC = 17,           // Toggle BWC On/Off on targets that support
+        /* Enable/Disable/Set refresh rate dynamically */
+        CONFIGURE_DYN_REFRESH_RATE = 18,
         COMMAND_LIST_END = 400,
     };