LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
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h/q/d: Add binder-api support to change refresh-rate.

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** 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
This commit is contained in:
Raj Kamal
2014-11-25 17:36:36 +05:30
parent 56ec3f036a
commit 0d53fc6d29
7 changed files with 98 additions and 6 deletions
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10
libhwcomposer/hwc_utils.cpp
View File

@@ -401,6 +401,12 @@ void initContext(hwc_context_t *ctx)
ctx->mWindowboxFeature = true;
}
ctx->mUseMetaDataRefreshRate = true;
if(property_get("persist.metadata_dynfps.disable", value, "false")
&& !strcmp(value, "true")) {
ctx->mUseMetaDataRefreshRate = false;
}
memset(&(ctx->mPtorInfo), 0, sizeof(ctx->mPtorInfo));
ALOGI("Initializing Qualcomm Hardware Composer");
ALOGI("MDP version: %d", ctx->mMDP.version);
@@ -460,7 +466,7 @@ void closeContext(hwc_context_t *ctx)
}
//Helper to roundoff the refreshrates
static uint32_t roundOff(uint32_t refreshRate) {
uint32_t roundOff(uint32_t refreshRate) {
int count = (int) (sizeof(stdRefreshRates)/sizeof(stdRefreshRates[0]));
uint32_t rate = refreshRate;
for(int i=0; i< count; i++) {
@@ -1052,7 +1058,7 @@ void setListStats(hwc_context_t *ctx,
ctx->listStats[dpy].preMultipliedAlpha = true;
#ifdef DYNAMIC_FPS
if (dpy == HWC_DISPLAY_PRIMARY && mdpHw.isDynFpsSupported()) {
if (!dpy && mdpHw.isDynFpsSupported() && ctx->mUseMetaDataRefreshRate){
//dyn fps: get refreshrate from metadata
//Support multiple refresh rates if they are same
//else set to default