upload android base code part4
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android/hardware/qcom/display/msm8909/libhwcomposer/hwc_ad.cpp
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278
android/hardware/qcom/display/msm8909/libhwcomposer/hwc_ad.cpp
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/*
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* Copyright (c) 2013-2014 The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <unistd.h>
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#include <overlay.h>
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#include <overlayUtils.h>
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#include <overlayWriteback.h>
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#include <mdp_version.h>
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#include "hwc_ad.h"
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#include "hwc_utils.h"
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#define DEBUG 0
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using namespace overlay;
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using namespace overlay::utils;
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namespace qhwc {
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//Helper to write data to ad node
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static void adWrite(const int& value) {
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const int wbFbNum = Overlay::getFbForDpy(Overlay::DPY_WRITEBACK);
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char wbFbPath[256];
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snprintf (wbFbPath, sizeof(wbFbPath),
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"/sys/class/graphics/fb%d/ad", wbFbNum);
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int adFd = open(wbFbPath, O_WRONLY);
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if(adFd >= 0) {
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char opStr[4] = "";
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snprintf(opStr, sizeof(opStr), "%d", value);
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ssize_t ret = write(adFd, opStr, strlen(opStr));
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if(ret < 0) {
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ALOGE("%s: Failed to write %d with error %s",
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__func__, value, strerror(errno));
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} else if (ret == 0){
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ALOGE("%s Nothing written to ad", __func__);
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} else {
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ALOGD_IF(DEBUG, "%s: Wrote %d to ad", __func__, value);
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}
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close(adFd);
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} else {
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ALOGE("%s: Failed to open /sys/class/graphics/fb%d/ad with error %s",
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__func__, wbFbNum, strerror(errno));
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}
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}
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//Helper to read data from ad node
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static int adRead() {
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const int wbFbNum = Overlay::getFbForDpy(Overlay::DPY_WRITEBACK);
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int ret = -1;
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char wbFbPath[256];
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snprintf (wbFbPath, sizeof(wbFbPath),
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"/sys/class/graphics/fb%d/ad", wbFbNum);
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int adFd = open(wbFbPath, O_RDONLY);
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if(adFd >= 0) {
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char opStr[4];
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ssize_t bytesRead = read(adFd, opStr, sizeof(opStr) - 1);
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if(bytesRead > 0) {
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opStr[bytesRead] = '\0';
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//Should return -1, 0 or 1
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ret = atoi(opStr);
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ALOGD_IF(DEBUG, "%s: Read %d from ad", __func__, ret);
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} else if(bytesRead == 0) {
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ALOGE("%s: ad node empty", __func__);
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} else {
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ALOGE("%s: Read from ad node failed with error %s", __func__,
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strerror(errno));
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}
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close(adFd);
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} else {
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ALOGD("%s: /sys/class/graphics/fb%d/ad could not be opened : %s",
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__func__, wbFbNum, strerror(errno));
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}
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return ret;
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}
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AssertiveDisplay::AssertiveDisplay(hwc_context_t *ctx) :
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mTurnedOff(true), mFeatureEnabled(false),
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mDest(overlay::utils::OV_INVALID)
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{
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//Values in ad node:
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//-1 means feature is disabled on device
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// 0 means feature exists but turned off, will be turned on by hwc
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// 1 means feature is turned on by hwc
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// Plus, we do this feature only on split primary displays.
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// Plus, we do this feature only if ro.qcom.ad=2
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char property[PROPERTY_VALUE_MAX];
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const int ENABLED = 2;
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int val = 0;
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if(property_get("ro.qcom.ad", property, "0") > 0) {
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val = atoi(property);
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}
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if(adRead() >= 0 && isDisplaySplit(ctx, HWC_DISPLAY_PRIMARY) &&
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val == ENABLED) {
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ALOGD_IF(DEBUG, "Assertive display feature supported");
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mFeatureEnabled = true;
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// If feature exists but is turned off, set mTurnedOff to true
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mTurnedOff = adRead() > 0 ? false : true;
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}
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}
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void AssertiveDisplay::markDoable(hwc_context_t *ctx,
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const hwc_display_contents_1_t* list) {
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mDoable = false;
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if(mFeatureEnabled &&
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!isSecondaryConnected(ctx) &&
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ctx->listStats[HWC_DISPLAY_PRIMARY].yuvCount == 1) {
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int nYuvIndex = ctx->listStats[HWC_DISPLAY_PRIMARY].yuvIndices[0];
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const hwc_layer_1_t* layer = &list->hwLayers[nYuvIndex];
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private_handle_t *hnd = (private_handle_t *)layer->handle;
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qdutils::MDPVersion& mdpHw = qdutils::MDPVersion::getInstance();
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if(hnd && hnd->width <= (int) mdpHw.getMaxMixerWidth()) {
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mDoable = true;
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}
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}
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}
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void AssertiveDisplay::turnOffAD() {
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if(mFeatureEnabled) {
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if(!mTurnedOff) {
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const int off = 0;
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adWrite(off);
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mTurnedOff = true;
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}
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}
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mDoable = false;
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}
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bool AssertiveDisplay::prepare(hwc_context_t *ctx,
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const hwc_rect_t& crop,
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const Whf& whf,
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const private_handle_t *hnd) {
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if(!isDoable()) {
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//Cleanup one time during this switch
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turnOffAD();
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return false;
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}
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Overlay::PipeSpecs pipeSpecs;
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pipeSpecs.formatClass = Overlay::FORMAT_YUV;
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pipeSpecs.dpy = overlay::Overlay::DPY_WRITEBACK;
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pipeSpecs.fb = false;
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ovutils::eDest dest = ctx->mOverlay->getPipe(pipeSpecs);
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if(dest == OV_INVALID) {
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ALOGE("%s failed: No VG pipe available", __func__);
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mDoable = false;
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return false;
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}
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overlay::Writeback *wb = overlay::Writeback::getInstance();
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//Set Security flag on writeback
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if(isSecureBuffer(hnd)) {
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if(!wb->setSecure(isSecureBuffer(hnd))) {
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ALOGE("Failure in setting WB secure flag for ad");
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return false;
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}
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}
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if(!wb->configureDpyInfo(hnd->width, hnd->height)) {
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ALOGE("%s: config display failed", __func__);
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mDoable = false;
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return false;
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}
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int tmpW, tmpH;
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size_t size;
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int format = ovutils::getHALFormat(wb->getOutputFormat());
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if(format < 0) {
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ALOGE("%s invalid format %d", __func__, format);
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mDoable = false;
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return false;
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}
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size = getBufferSizeAndDimensions(hnd->width, hnd->height,
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format, tmpW, tmpH);
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if(!wb->configureMemory((uint32_t)size)) {
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ALOGE("%s: config memory failed", __func__);
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mDoable = false;
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return false;
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}
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eMdpFlags mdpFlags = OV_MDP_FLAGS_NONE;
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if(isSecureBuffer(hnd)) {
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ovutils::setMdpFlags(mdpFlags,
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ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
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}
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PipeArgs parg(mdpFlags, whf, ZORDER_0,
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ROT_FLAGS_NONE);
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hwc_rect_t dst = crop; //input same as output
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if(configMdp(ctx->mOverlay, parg, OVERLAY_TRANSFORM_0, crop, dst, NULL,
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dest) < 0) {
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ALOGE("%s: configMdp failed", __func__);
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mDoable = false;
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return false;
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}
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mDest = dest;
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int wbFd = wb->getFbFd();
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if(mFeatureEnabled && wbFd >= 0 &&
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!ctx->mOverlay->validateAndSet(overlay::Overlay::DPY_WRITEBACK, wbFd))
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{
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ALOGE("%s: Failed to validate and set overlay for dpy %d"
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,__FUNCTION__, overlay::Overlay::DPY_WRITEBACK);
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turnOffAD();
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return false;
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}
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// Only turn on AD if there are no errors during configuration stage
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// and if it was previously in OFF state.
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if(mFeatureEnabled && mTurnedOff) {
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//write to sysfs, one time during this switch
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const int on = 1;
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adWrite(on);
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mTurnedOff = false;
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}
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return true;
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}
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bool AssertiveDisplay::draw(hwc_context_t *ctx, int fd, uint32_t offset) {
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if(!isDoable()) {
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return false;
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}
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if (!ctx->mOverlay->queueBuffer(fd, offset, mDest)) {
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ALOGE("%s: queueBuffer failed", __func__);
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return false;
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}
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overlay::Writeback *wb = overlay::Writeback::getInstance();
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if(!wb->writeSync()) {
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return false;
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}
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return true;
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}
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int AssertiveDisplay::getDstFd() const {
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overlay::Writeback *wb = overlay::Writeback::getInstance();
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return wb->getDstFd();
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}
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uint32_t AssertiveDisplay::getDstOffset() const {
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overlay::Writeback *wb = overlay::Writeback::getInstance();
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return wb->getOffset();
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}
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}
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