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Commit 06e51a0a authored by Mathias Agopian's avatar Mathias Agopian
Browse files

don't actuate vsync hint when not needed 

Change-Id: I61c43dd76041816ab8cbe9aeaa55c11c1479ed03
parent 03e40727

services/surfaceflinger/DisplayHardware/PowerHAL.cpp

+6 −2
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ 
namespace android {

// ---------------------------------------------------------------------------



PowerHAL::PowerHAL() : mPowerModule(0) {

PowerHAL::PowerHAL() : mPowerModule(0), mVSyncHintEnabled(false) {

    int err = hw_get_module(POWER_HARDWARE_MODULE_ID,

            (const hw_module_t **)&mPowerModule);

    ALOGW_IF(err, "%s module not found", POWER_HARDWARE_MODULE_ID);
@@ -44,7 +44,11 @@ status_t PowerHAL::vsyncHint(bool enabled) { 
    }

    if (mPowerModule->common.module_api_version >= POWER_MODULE_API_VERSION_0_2) {

        if (mPowerModule->powerHint) {

            mPowerModule->powerHint(mPowerModule, POWER_HINT_VSYNC, (void*)enabled);

            if (mVSyncHintEnabled != bool(enabled)) {

                mPowerModule->powerHint(mPowerModule,

                        POWER_HINT_VSYNC, (void*)enabled);

                mVSyncHintEnabled = bool(enabled);

            }

        }

    }

    return NO_ERROR;

services/surfaceflinger/DisplayHardware/PowerHAL.h

+1 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ public: 


private:

    power_module_t*   mPowerModule;

    bool mVSyncHintEnabled;

};



// ---------------------------------------------------------------------------