Merge "Write unity gain back with successful EFFECT_CMD_SET_VOLUME handling"

            mEffect->setParameter(Parameter::make<Parameter::deviceDescription>(aidlDevices))));

    return *static_cast<int32_t*>(pReplyData) = OK;

}

status_t EffectConversionHelperAidl::handleSetVolume(uint32_t cmdSize, const void* pCmdData,

                                                     uint32_t* replySize __unused,

                                                     void* pReplyData __unused) {

                                                     uint32_t* replySize, void* pReplyData) {

    if (cmdSize != 2 * sizeof(uint32_t) || !pCmdData) {

        ALOGE("%s parameter invalid %u %p", __func__, cmdSize, pCmdData);

        return BAD_VALUE;

    }

    Parameter::VolumeStereo volume = {.left = (float)(*(uint32_t*)pCmdData) / (1 << 24),

                                      .right = (float)(*(uint32_t*)pCmdData + 1) / (1 << 24)};

    constexpr uint32_t unityGain = 1 << 24;

    Parameter::VolumeStereo volume = {.left = (float)(*(uint32_t*)pCmdData) / unityGain,

                                      .right = (float)(*(uint32_t*)pCmdData + 1) / unityGain};

    RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(

            mEffect->setParameter(Parameter::make<Parameter::volumeStereo>(volume))));

    // write unity gain back if volume was successfully set

    if (replySize && *replySize == 2 * sizeof(uint32_t) && pReplyData) {

        constexpr uint32_t vol_ret[2] = {unityGain, unityGain};

        memcpy(pReplyData, vol_ret, sizeof(vol_ret));

    }

    return OK;

}