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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  * Copyright (C) 2012-2013, The Linux Foundation All rights reserved.
      4  *
      5  * Not a Contribution, Apache license notifications and license are retained
      6  * for attribution purposes only.
      7  *
      8  * Licensed under the Apache License, Version 2.0 (the "License");
      9  * you may not use this file except in compliance with the License.
     10  * You may obtain a copy of the License at
     11  *
     12  *      http://www.apache.org/licenses/LICENSE-2.0
     13  *
     14  * Unless required by applicable law or agreed to in writing, software
     15  * distributed under the License is distributed on an "AS IS" BASIS,
     16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     17  * See the License for the specific language governing permissions and
     18  * limitations under the License.
     19  */
     20 #define HWC_UTILS_DEBUG 0
     21 #include <sys/ioctl.h>
     22 #include <binder/IServiceManager.h>
     23 #include <EGL/egl.h>
     24 #include <cutils/properties.h>
     25 #include <gralloc_priv.h>
     26 #include <overlay.h>
     27 #include <overlayRotator.h>
     28 #include "hwc_utils.h"
     29 #include "hwc_mdpcomp.h"
     30 #include "hwc_fbupdate.h"
     31 #include "mdp_version.h"
     32 #include "hwc_copybit.h"
     33 #include "external.h"
     34 #include "hwc_qclient.h"
     35 #include "QService.h"
     36 #include "comptype.h"
     37 
     38 using namespace qClient;
     39 using namespace qService;
     40 using namespace android;
     41 using namespace overlay;
     42 using namespace overlay::utils;
     43 namespace ovutils = overlay::utils;
     44 
     45 namespace qhwc {
     46 
     47 static int openFramebufferDevice(hwc_context_t *ctx)
     48 {
     49     struct fb_fix_screeninfo finfo;
     50     struct fb_var_screeninfo info;
     51 
     52     int fb_fd = openFb(HWC_DISPLAY_PRIMARY);
     53 
     54     if (ioctl(fb_fd, FBIOGET_VSCREENINFO, &info) == -1)
     55         return -errno;
     56 
     57     if (int(info.width) <= 0 || int(info.height) <= 0) {
     58         // the driver doesn't return that information
     59         // default to 160 dpi
     60         info.width  = ((info.xres * 25.4f)/160.0f + 0.5f);
     61         info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
     62     }
     63 
     64     float xdpi = (info.xres * 25.4f) / info.width;
     65     float ydpi = (info.yres * 25.4f) / info.height;
     66 
     67 #ifdef MSMFB_METADATA_GET
     68     struct msmfb_metadata metadata;
     69     memset(&metadata, 0 , sizeof(metadata));
     70     metadata.op = metadata_op_frame_rate;
     71 
     72     if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) {
     73         ALOGE("Error retrieving panel frame rate");
     74         return -errno;
     75     }
     76 
     77     float fps  = metadata.data.panel_frame_rate;
     78 #else
     79     //XXX: Remove reserved field usage on all baselines
     80     //The reserved[3] field is used to store FPS by the driver.
     81     float fps  = info.reserved[3] & 0xFF;
     82 #endif
     83 
     84     if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &finfo) == -1)
     85         return -errno;
     86 
     87     if (finfo.smem_len <= 0)
     88         return -errno;
     89 
     90     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = fb_fd;
     91     //xres, yres may not be 32 aligned
     92     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = finfo.line_length /(info.xres/8);
     93     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = info.xres;
     94     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = info.yres;
     95     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = xdpi;
     96     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ydpi;
     97     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period = 1000000000l / fps;
     98 
     99     //Unblank primary on first boot
    100     if(ioctl(fb_fd, FBIOBLANK,FB_BLANK_UNBLANK) < 0) {
    101         ALOGE("%s: Failed to unblank display", __FUNCTION__);
    102         return -errno;
    103     }
    104     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].isActive = true;
    105 
    106     return 0;
    107 }
    108 
    109 static int ppdComm(const char* cmd, hwc_context_t *ctx) {
    110     int ret = -1;
    111     ret = send(ctx->mCablProp.daemon_socket, cmd, strlen(cmd), MSG_NOSIGNAL);
    112     if(ret < 0) {
    113         if (errno == EPIPE) {
    114             //For broken pipe case, we will close the socket and
    115             //re-establish the connection
    116             close(ctx->mCablProp.daemon_socket);
    117             int daemon_socket = socket_local_client(DAEMON_SOCKET,
    118                     ANDROID_SOCKET_NAMESPACE_RESERVED,
    119                     SOCK_STREAM);
    120             if(!daemon_socket) {
    121                 ALOGE("Connecting to socket failed: %s", strerror(errno));
    122                 ctx->mCablProp.enabled = false;
    123                 return -1;
    124             }
    125             struct timeval timeout;
    126             timeout.tv_sec = 1;//wait 1 second before timeout
    127             timeout.tv_usec = 0;
    128 
    129             if (setsockopt(daemon_socket, SOL_SOCKET, SO_SNDTIMEO,
    130                         (char*)&timeout, sizeof(timeout )) < 0)
    131                 ALOGE("setsockopt failed");
    132 
    133             ctx->mCablProp.daemon_socket = daemon_socket;
    134             //resend the cmd after connection is re-established
    135             ret = send(ctx->mCablProp.daemon_socket, cmd, strlen(cmd),
    136                        MSG_NOSIGNAL);
    137             if (ret < 0) {
    138                 ALOGE("Failed to send data over socket: %s",
    139                         strerror(errno));
    140                 return ret;
    141             }
    142         } else {
    143             ALOGE("Failed to send data over socket: %s",
    144                     strerror(errno));
    145             return ret;
    146         }
    147     }
    148     ALOGD_IF(HWC_UTILS_DEBUG, "%s: Sent command: %s", __FUNCTION__, cmd);
    149     return 0;
    150 }
    151 
    152 static void connectPPDaemon(hwc_context_t *ctx)
    153 {
    154     int ret = -1;
    155     char property[PROPERTY_VALUE_MAX];
    156     if ((property_get("ro.qualcomm.cabl", property, NULL) > 0) &&
    157         (atoi(property) == 1)) {
    158         ALOGD("%s: CABL is enabled", __FUNCTION__);
    159         ctx->mCablProp.enabled = true;
    160     } else {
    161         ALOGD("%s: CABL is disabled", __FUNCTION__);
    162         ctx->mCablProp.enabled = false;
    163         return;
    164     }
    165 
    166     if ((property_get("persist.qcom.cabl.video_only", property, NULL) > 0) &&
    167         (atoi(property) == 1)) {
    168         ALOGD("%s: CABL is in video only mode", __FUNCTION__);
    169         ctx->mCablProp.videoOnly = true;
    170     } else {
    171         ctx->mCablProp.videoOnly = false;
    172     }
    173 
    174     int daemon_socket = socket_local_client(DAEMON_SOCKET,
    175                                             ANDROID_SOCKET_NAMESPACE_RESERVED,
    176                                             SOCK_STREAM);
    177     if(!daemon_socket) {
    178         ALOGE("Connecting to socket failed: %s", strerror(errno));
    179         ctx->mCablProp.enabled = false;
    180         return;
    181     }
    182     struct timeval timeout;
    183     timeout.tv_sec = 1; //wait 1 second before timeout
    184     timeout.tv_usec = 0;
    185 
    186     if (setsockopt(daemon_socket, SOL_SOCKET, SO_SNDTIMEO,
    187         (char*)&timeout, sizeof(timeout )) < 0)
    188         ALOGE("setsockopt failed");
    189 
    190     ctx->mCablProp.daemon_socket = daemon_socket;
    191 }
    192 
    193 void initContext(hwc_context_t *ctx)
    194 {
    195     if(openFramebufferDevice(ctx) < 0) {
    196         ALOGE("%s: failed to open framebuffer!!", __FUNCTION__);
    197     }
    198 
    199     overlay::Overlay::initOverlay();
    200     ctx->mOverlay = overlay::Overlay::getInstance();
    201     ctx->mRotMgr = new RotMgr();
    202     ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
    203     ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
    204     ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
    205     overlay::Overlay::initOverlay();
    206     ctx->mOverlay = overlay::Overlay::getInstance();
    207     ctx->mRotMgr = new RotMgr();
    208 
    209     //Is created and destroyed only once for primary
    210     //For external it could get created and destroyed multiple times depending
    211     //on what external we connect to.
    212     ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
    213         IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
    214         HWC_DISPLAY_PRIMARY);
    215 
    216     // Check if the target supports copybit compostion (dyn/mdp/c2d) to
    217     // decide if we need to open the copybit module.
    218     int compositionType =
    219         qdutils::QCCompositionType::getInstance().getCompositionType();
    220 
    221     if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
    222                            qdutils::COMPOSITION_TYPE_MDP |
    223                            qdutils::COMPOSITION_TYPE_C2D)) {
    224             ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
    225     }
    226 
    227     ctx->mExtDisplay = new ExternalDisplay(ctx);
    228 
    229     for (uint32_t i = 0; i < MAX_DISPLAYS; i++) {
    230         ctx->mLayerRotMap[i] = new LayerRotMap();
    231     }
    232 
    233     ctx->mMDPComp[HWC_DISPLAY_PRIMARY] =
    234          MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
    235          HWC_DISPLAY_PRIMARY);
    236 
    237     MDPComp::init(ctx);
    238 
    239     ctx->vstate.enable = false;
    240     ctx->vstate.fakevsync = false;
    241     ctx->mExtDispConfiguring = false;
    242     ctx->mBasePipeSetup = false;
    243 
    244     //Right now hwc starts the service but anybody could do it, or it could be
    245     //independent process as well.
    246     QService::init();
    247     sp<IQClient> client = new QClient(ctx);
    248     interface_cast<IQService>(
    249             defaultServiceManager()->getService(
    250             String16("display.qservice")))->connect(client);
    251 
    252     ALOGI("Initializing Qualcomm Hardware Composer");
    253     ALOGI("MDP version: %d", ctx->mMDP.version);
    254 
    255     connectPPDaemon(ctx);
    256 }
    257 
    258 void closeContext(hwc_context_t *ctx)
    259 {
    260     if(ctx->mOverlay) {
    261         delete ctx->mOverlay;
    262         ctx->mOverlay = NULL;
    263     }
    264 
    265     if(ctx->mRotMgr) {
    266         delete ctx->mRotMgr;
    267         ctx->mRotMgr = NULL;
    268     }
    269 
    270     for(int i = 0; i < MAX_DISPLAYS; i++) {
    271         if(ctx->mCopyBit[i]) {
    272             delete ctx->mCopyBit[i];
    273             ctx->mCopyBit[i] = NULL;
    274         }
    275     }
    276 
    277     if(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd) {
    278         close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
    279         ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
    280     }
    281 
    282     if(ctx->mExtDisplay) {
    283         delete ctx->mExtDisplay;
    284         ctx->mExtDisplay = NULL;
    285     }
    286 
    287     for(int i = 0; i < MAX_DISPLAYS; i++) {
    288         if(ctx->mFBUpdate[i]) {
    289             delete ctx->mFBUpdate[i];
    290             ctx->mFBUpdate[i] = NULL;
    291         }
    292         if(ctx->mMDPComp[i]) {
    293             delete ctx->mMDPComp[i];
    294             ctx->mMDPComp[i] = NULL;
    295         }
    296         if(ctx->mLayerRotMap[i]) {
    297             delete ctx->mLayerRotMap[i];
    298             ctx->mLayerRotMap[i] = NULL;
    299         }
    300     }
    301 }
    302 
    303 
    304 void dumpsys_log(android::String8& buf, const char* fmt, ...)
    305 {
    306     va_list varargs;
    307     va_start(varargs, fmt);
    308     buf.appendFormatV(fmt, varargs);
    309     va_end(varargs);
    310 }
    311 
    312 /* Calculates the destination position based on the action safe rectangle */
    313 void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x,
    314                            uint32_t& y, uint32_t& w, uint32_t& h) {
    315 
    316     // if external supports underscan, do nothing
    317     // it will be taken care in the driver
    318     if(ctx->mExtDisplay->isCEUnderscanSupported())
    319         return;
    320 
    321     float wRatio = 1.0;
    322     float hRatio = 1.0;
    323     float xRatio = 1.0;
    324     float yRatio = 1.0;
    325 
    326     float fbWidth = ctx->dpyAttr[dpy].xres;
    327     float fbHeight = ctx->dpyAttr[dpy].yres;
    328 
    329     float asX = 0;
    330     float asY = 0;
    331     float asW = fbWidth;
    332     float asH= fbHeight;
    333     char value[PROPERTY_VALUE_MAX];
    334 
    335     // Apply action safe parameters
    336     property_get("hw.actionsafe.width", value, "0");
    337     int asWidthRatio = atoi(value);
    338     property_get("hw.actionsafe.height", value, "0");
    339     int asHeightRatio = atoi(value);
    340     // based on the action safe ratio, get the Action safe rectangle
    341     asW = fbWidth * (1.0f -  asWidthRatio / 100.0f);
    342     asH = fbHeight * (1.0f -  asHeightRatio / 100.0f);
    343     asX = (fbWidth - asW) / 2;
    344     asY = (fbHeight - asH) / 2;
    345 
    346     // calculate the position ratio
    347     xRatio = (float)x/fbWidth;
    348     yRatio = (float)y/fbHeight;
    349     wRatio = (float)w/fbWidth;
    350     hRatio = (float)h/fbHeight;
    351 
    352     //Calculate the position...
    353     x = (xRatio * asW) + asX;
    354     y = (yRatio * asH) + asY;
    355     w = (wRatio * asW);
    356     h = (hRatio * asH);
    357 
    358     return;
    359 }
    360 
    361 bool needsScaling(hwc_layer_1_t const* layer) {
    362     int dst_w, dst_h, src_w, src_h;
    363 
    364     hwc_rect_t displayFrame  = layer->displayFrame;
    365     hwc_rect_t sourceCrop = layer->sourceCrop;
    366 
    367     dst_w = displayFrame.right - displayFrame.left;
    368     dst_h = displayFrame.bottom - displayFrame.top;
    369 
    370     src_w = sourceCrop.right - sourceCrop.left;
    371     src_h = sourceCrop.bottom - sourceCrop.top;
    372 
    373     if(((src_w != dst_w) || (src_h != dst_h)))
    374         return true;
    375 
    376     return false;
    377 }
    378 
    379 bool isAlphaScaled(hwc_layer_1_t const* layer) {
    380     if(needsScaling(layer) && isAlphaPresent(layer)) {
    381         return true;
    382     }
    383     return false;
    384 }
    385 
    386 bool isAlphaPresent(hwc_layer_1_t const* layer) {
    387     private_handle_t *hnd = (private_handle_t *)layer->handle;
    388     if(hnd) {
    389         int format = hnd->format;
    390         switch(format) {
    391         case HAL_PIXEL_FORMAT_RGBA_8888:
    392         case HAL_PIXEL_FORMAT_BGRA_8888:
    393             // In any more formats with Alpha go here..
    394             return true;
    395         default : return false;
    396         }
    397     }
    398     return false;
    399 }
    400 
    401 // Switch ppd on/off for YUV
    402 static void configurePPD(hwc_context_t *ctx, int yuvCount) {
    403     if (!ctx->mCablProp.enabled)
    404         return;
    405 
    406     if (yuvCount > 0 && !ctx->mCablProp.start) {
    407         ctx->mCablProp.start = true;
    408         if(ctx->mCablProp.videoOnly)
    409             ppdComm("cabl:on", ctx);
    410         else
    411             ppdComm("cabl:yuv_on", ctx);
    412 
    413     } else if (yuvCount == 0 && ctx->mCablProp.start) {
    414         ctx->mCablProp.start = false;
    415         if(ctx->mCablProp.videoOnly)
    416             ppdComm("cabl:off", ctx);
    417         else
    418             ppdComm("cabl:yuv_off", ctx);
    419         return;
    420     }
    421 }
    422 
    423 void setListStats(hwc_context_t *ctx,
    424         const hwc_display_contents_1_t *list, int dpy) {
    425 
    426     ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
    427     ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
    428     ctx->listStats[dpy].skipCount = 0;
    429     ctx->listStats[dpy].needsAlphaScale = false;
    430     ctx->listStats[dpy].preMultipliedAlpha = false;
    431     ctx->listStats[dpy].planeAlpha = false;
    432     ctx->listStats[dpy].yuvCount = 0;
    433 
    434     for (size_t i = 0; i < list->numHwLayers; i++) {
    435         hwc_layer_1_t const* layer = &list->hwLayers[i];
    436         private_handle_t *hnd = (private_handle_t *)layer->handle;
    437 
    438         //reset stored yuv index
    439         ctx->listStats[dpy].yuvIndices[i] = -1;
    440 
    441         if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
    442             continue;
    443         //We disregard FB being skip for now! so the else if
    444         } else if (isSkipLayer(&list->hwLayers[i])) {
    445             ctx->listStats[dpy].skipCount++;
    446         } else if (UNLIKELY(isYuvBuffer(hnd))) {
    447             int& yuvCount = ctx->listStats[dpy].yuvCount;
    448             ctx->listStats[dpy].yuvIndices[yuvCount] = i;
    449             yuvCount++;
    450 
    451             if(layer->transform & HWC_TRANSFORM_ROT_90)
    452                 ctx->mNeedsRotator = true;
    453         }
    454         if(layer->blending == HWC_BLENDING_PREMULT)
    455             ctx->listStats[dpy].preMultipliedAlpha = true;
    456         if(layer->planeAlpha < 0xFF)
    457             ctx->listStats[dpy].planeAlpha = true;
    458         if(!ctx->listStats[dpy].needsAlphaScale)
    459             ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
    460     }
    461     if (dpy == HWC_DISPLAY_PRIMARY)
    462         configurePPD(ctx, ctx->listStats[dpy].yuvCount);
    463 }
    464 
    465 
    466 static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
    467         float& rightCutRatio, float& bottomCutRatio, int orient) {
    468     if(orient & HAL_TRANSFORM_FLIP_H) {
    469         swap(leftCutRatio, rightCutRatio);
    470     }
    471     if(orient & HAL_TRANSFORM_FLIP_V) {
    472         swap(topCutRatio, bottomCutRatio);
    473     }
    474     if(orient & HAL_TRANSFORM_ROT_90) {
    475         //Anti clock swapping
    476         float tmpCutRatio = leftCutRatio;
    477         leftCutRatio = topCutRatio;
    478         topCutRatio = rightCutRatio;
    479         rightCutRatio = bottomCutRatio;
    480         bottomCutRatio = tmpCutRatio;
    481     }
    482 }
    483 
    484 bool isSecuring(hwc_context_t* ctx, hwc_layer_1_t const* layer) {
    485     if((ctx->mMDP.version < qdutils::MDSS_V5) &&
    486        (ctx->mMDP.version > qdutils::MDP_V3_0) &&
    487         ctx->mSecuring) {
    488         return true;
    489     }
    490     //  On A-Family, Secure policy is applied system wide and not on
    491     //  buffers.
    492     if (isSecureModePolicy(ctx->mMDP.version)) {
    493         private_handle_t *hnd = (private_handle_t *)layer->handle;
    494         if(ctx->mSecureMode) {
    495             if (! isSecureBuffer(hnd)) {
    496                 // This code path executes for the following usecase:
    497                 // Some Apps in which first few seconds, framework
    498                 // sends non-secure buffer and with out destroying
    499                 // surfaces, switches to secure buffer thereby exposing
    500                 // vulnerability on A-family devices. Catch this situation
    501                 // and handle it gracefully by allowing it to be composed by
    502                 // GPU.
    503                 ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle non-secure video layer"
    504                          "during secure playback gracefully", __FUNCTION__);
    505                 return true;
    506             }
    507         } else {
    508             if (isSecureBuffer(hnd)) {
    509                 // This code path executes for the following usecase:
    510                 // For some Apps, when User terminates playback, Framework
    511                 // doesnt destroy video surface and video surface still
    512                 // comes to Display HAL. This exposes vulnerability on
    513                 // A-family. Catch this situation and handle it gracefully
    514                 // by allowing it to be composed by GPU.
    515                 ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle secure video layer"
    516                          "during non-secure playback gracefully", __FUNCTION__);
    517                 return true;
    518             }
    519         }
    520     }
    521     return false;
    522 }
    523 
    524 bool isSecureModePolicy(int mdpVersion) {
    525     if (mdpVersion < qdutils::MDSS_V5)
    526         return true;
    527     else
    528         return false;
    529 }
    530 
    531 int getBlending(int blending) {
    532     switch(blending) {
    533     case HWC_BLENDING_NONE:
    534         return overlay::utils::OVERLAY_BLENDING_OPAQUE;
    535     case HWC_BLENDING_PREMULT:
    536         return overlay::utils::OVERLAY_BLENDING_PREMULT;
    537     case HWC_BLENDING_COVERAGE :
    538     default:
    539         return overlay::utils::OVERLAY_BLENDING_COVERAGE;
    540     }
    541 }
    542 
    543 //Crops source buffer against destination and FB boundaries
    544 void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
    545                           const hwc_rect_t& scissor, int orient) {
    546 
    547     int& crop_l = crop.left;
    548     int& crop_t = crop.top;
    549     int& crop_r = crop.right;
    550     int& crop_b = crop.bottom;
    551     int crop_w = crop.right - crop.left;
    552     int crop_h = crop.bottom - crop.top;
    553 
    554     int& dst_l = dst.left;
    555     int& dst_t = dst.top;
    556     int& dst_r = dst.right;
    557     int& dst_b = dst.bottom;
    558     int dst_w = abs(dst.right - dst.left);
    559     int dst_h = abs(dst.bottom - dst.top);
    560 
    561     const int& sci_l = scissor.left;
    562     const int& sci_t = scissor.top;
    563     const int& sci_r = scissor.right;
    564     const int& sci_b = scissor.bottom;
    565     int sci_w = abs(sci_r - sci_l);
    566     int sci_h = abs(sci_b - sci_t);
    567 
    568     float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
    569             bottomCutRatio = 0.0f;
    570 
    571     if(dst_l < sci_l) {
    572         leftCutRatio = (float)(sci_l - dst_l) / (float)dst_w;
    573         dst_l = sci_l;
    574     }
    575 
    576     if(dst_r > sci_r) {
    577         rightCutRatio = (float)(dst_r - sci_r) / (float)dst_w;
    578         dst_r = sci_r;
    579     }
    580 
    581     if(dst_t < sci_t) {
    582         topCutRatio = (float)(sci_t - dst_t) / (float)dst_h;
    583         dst_t = sci_t;
    584     }
    585 
    586     if(dst_b > sci_b) {
    587         bottomCutRatio = (float)(dst_b - sci_b) / (float)dst_h;
    588         dst_b = sci_b;
    589     }
    590 
    591     calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
    592     crop_l += crop_w * leftCutRatio;
    593     crop_t += crop_h * topCutRatio;
    594     crop_r -= crop_w * rightCutRatio;
    595     crop_b -= crop_h * bottomCutRatio;
    596 }
    597 
    598 void getNonWormholeRegion(hwc_display_contents_1_t* list,
    599                               hwc_rect_t& nwr)
    600 {
    601     uint32_t last = list->numHwLayers - 1;
    602     hwc_rect_t fbDisplayFrame = list->hwLayers[last].displayFrame;
    603     //Initiliaze nwr to first frame
    604     nwr.left =  list->hwLayers[0].displayFrame.left;
    605     nwr.top =  list->hwLayers[0].displayFrame.top;
    606     nwr.right =  list->hwLayers[0].displayFrame.right;
    607     nwr.bottom =  list->hwLayers[0].displayFrame.bottom;
    608 
    609     for (uint32_t i = 1; i < last; i++) {
    610         hwc_rect_t displayFrame = list->hwLayers[i].displayFrame;
    611         nwr.left   = min(nwr.left, displayFrame.left);
    612         nwr.top    = min(nwr.top, displayFrame.top);
    613         nwr.right  = max(nwr.right, displayFrame.right);
    614         nwr.bottom = max(nwr.bottom, displayFrame.bottom);
    615     }
    616 
    617     //Intersect with the framebuffer
    618     nwr.left   = max(nwr.left, fbDisplayFrame.left);
    619     nwr.top    = max(nwr.top, fbDisplayFrame.top);
    620     nwr.right  = min(nwr.right, fbDisplayFrame.right);
    621     nwr.bottom = min(nwr.bottom, fbDisplayFrame.bottom);
    622 
    623 }
    624 
    625 bool isExternalActive(hwc_context_t* ctx) {
    626     return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
    627 }
    628 
    629 void closeAcquireFds(hwc_display_contents_1_t* list) {
    630     if(LIKELY(list)) {
    631         for(uint32_t i = 0; i < list->numHwLayers; i++) {
    632             //Close the acquireFenceFds
    633             //HWC_FRAMEBUFFER are -1 already by SF, rest we close.
    634             if(list->hwLayers[i].acquireFenceFd >= 0) {
    635                 close(list->hwLayers[i].acquireFenceFd);
    636                 list->hwLayers[i].acquireFenceFd = -1;
    637             }
    638         }
    639     }
    640 }
    641 
    642 int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
    643         int fd) {
    644     int ret = 0;
    645 
    646     int acquireFd[MAX_NUM_LAYERS];
    647     int count = 0;
    648     int releaseFd = -1;
    649     int retireFd = -1;
    650     int fbFd = -1;
    651     int rotFd = -1;
    652     bool swapzero = false;
    653     int mdpVersion = qdutils::MDPVersion::getInstance().getMDPVersion();
    654 
    655     struct mdp_buf_sync data;
    656     memset(&data, 0, sizeof(data));
    657     //Until B-family supports sync for rotator
    658     if(mdpVersion >= qdutils::MDSS_V5) {
    659         data.flags = MDP_BUF_SYNC_FLAG_WAIT;
    660     }
    661     data.acq_fen_fd = acquireFd;
    662     data.rel_fen_fd = &releaseFd;
    663     data.retire_fen_fd = &retireFd;
    664 
    665     char property[PROPERTY_VALUE_MAX];
    666     if(property_get("debug.egl.swapinterval", property, "1") > 0) {
    667         if(atoi(property) == 0)
    668             swapzero = true;
    669     }
    670 
    671 #ifndef MDSS_TARGET
    672     //Send acquireFenceFds to rotator
    673     if(mdpVersion < qdutils::MDSS_V5) {
    674         //A-family
    675         int rotFd = ctx->mRotMgr->getRotDevFd();
    676         struct msm_rotator_buf_sync rotData;
    677 
    678         for(uint32_t i = 0; i < ctx->mLayerRotMap[dpy]->getCount(); i++) {
    679             memset(&rotData, 0, sizeof(rotData));
    680             int& acquireFenceFd =
    681                 ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd;
    682             rotData.acq_fen_fd = acquireFenceFd;
    683             rotData.session_id = ctx->mLayerRotMap[dpy]->getRot(i)->getSessId();
    684             ioctl(rotFd, MSM_ROTATOR_IOCTL_BUFFER_SYNC, &rotData);
    685             close(acquireFenceFd);
    686              //For MDP to wait on.
    687             acquireFenceFd = dup(rotData.rel_fen_fd);
    688             //A buffer is free to be used by producer as soon as its copied to
    689             //rotator.
    690             ctx->mLayerRotMap[dpy]->getLayer(i)->releaseFenceFd =
    691                     rotData.rel_fen_fd;
    692         }
    693     } else {
    694         //TODO B-family
    695     }
    696 
    697 #endif
    698     //Accumulate acquireFenceFds for MDP
    699     for(uint32_t i = 0; i < list->numHwLayers; i++) {
    700         if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
    701                         list->hwLayers[i].acquireFenceFd >= 0) {
    702             if(UNLIKELY(swapzero))
    703                 acquireFd[count++] = -1;
    704             else
    705                 acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
    706         }
    707         if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
    708             if(UNLIKELY(swapzero))
    709                 acquireFd[count++] = -1;
    710             else if(fd >= 0) {
    711                 //set the acquireFD from fd - which is coming from c2d
    712                 acquireFd[count++] = fd;
    713                 // Buffer sync IOCTL should be async when using c2d fence is
    714                 // used
    715                 data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
    716             } else if(list->hwLayers[i].acquireFenceFd >= 0)
    717                 acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
    718         }
    719     }
    720 
    721     data.acq_fen_fd_cnt = count;
    722     fbFd = ctx->dpyAttr[dpy].fd;
    723 
    724     //Waits for acquire fences, returns a release fence
    725     if(LIKELY(!swapzero)) {
    726         uint64_t start = systemTime();
    727         ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
    728         ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
    729                             __FUNCTION__, (size_t) ns2ms(systemTime() - start));
    730     }
    731 
    732     if(ret < 0) {
    733         ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
    734                 strerror(errno));
    735     }
    736 
    737     for(uint32_t i = 0; i < list->numHwLayers; i++) {
    738         if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
    739            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
    740             //Populate releaseFenceFds.
    741             if(UNLIKELY(swapzero)) {
    742                 list->hwLayers[i].releaseFenceFd = -1;
    743             } else if(list->hwLayers[i].releaseFenceFd < 0) {
    744                 //If rotator has not already populated this field.
    745                 list->hwLayers[i].releaseFenceFd = dup(releaseFd);
    746             }
    747         }
    748     }
    749 
    750     if(fd >= 0) {
    751         close(fd);
    752         fd = -1;
    753     }
    754 
    755     if (ctx->mCopyBit[dpy])
    756         ctx->mCopyBit[dpy]->setReleaseFd(releaseFd);
    757 
    758     //A-family
    759     if(mdpVersion < qdutils::MDSS_V5) {
    760         //Signals when MDP finishes reading rotator buffers.
    761         ctx->mLayerRotMap[dpy]->setReleaseFd(releaseFd);
    762     }
    763     close(releaseFd);
    764     if(UNLIKELY(swapzero))
    765         list->retireFenceFd = -1;
    766     else
    767         list->retireFenceFd = retireFd;
    768     return ret;
    769 }
    770 
    771 void trimLayer(hwc_context_t *ctx, const int& dpy, const int& transform,
    772         hwc_rect_t& crop, hwc_rect_t& dst) {
    773     int hw_w = ctx->dpyAttr[dpy].xres;
    774     int hw_h = ctx->dpyAttr[dpy].yres;
    775     if(dst.left < 0 || dst.top < 0 ||
    776             dst.right > hw_w || dst.bottom > hw_h) {
    777         hwc_rect_t scissor = {0, 0, hw_w, hw_h };
    778         qhwc::calculate_crop_rects(crop, dst, scissor, transform);
    779     }
    780 }
    781 
    782 void setMdpFlags(hwc_layer_1_t *layer,
    783         ovutils::eMdpFlags &mdpFlags,
    784         int rotDownscale) {
    785     private_handle_t *hnd = (private_handle_t *)layer->handle;
    786     MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
    787     const int& transform = layer->transform;
    788 
    789     if(layer->blending == HWC_BLENDING_PREMULT) {
    790         ovutils::setMdpFlags(mdpFlags,
    791                 ovutils::OV_MDP_BLEND_FG_PREMULT);
    792     }
    793 
    794     if(isYuvBuffer(hnd)) {
    795         if(isSecureBuffer(hnd)) {
    796             ovutils::setMdpFlags(mdpFlags,
    797                     ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
    798         }
    799         if(metadata && (metadata->operation & PP_PARAM_INTERLACED) &&
    800                 metadata->interlaced) {
    801             ovutils::setMdpFlags(mdpFlags,
    802                     ovutils::OV_MDP_DEINTERLACE);
    803         }
    804         //Pre-rotation will be used using rotator.
    805         if(transform & HWC_TRANSFORM_ROT_90) {
    806             ovutils::setMdpFlags(mdpFlags,
    807                     ovutils::OV_MDP_SOURCE_ROTATED_90);
    808         }
    809     }
    810 
    811     //No 90 component and no rot-downscale then flips done by MDP
    812     //If we use rot then it might as well do flips
    813     if(!(layer->transform & HWC_TRANSFORM_ROT_90) && !rotDownscale) {
    814         if(layer->transform & HWC_TRANSFORM_FLIP_H) {
    815             ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_FLIP_H);
    816         }
    817 
    818         if(layer->transform & HWC_TRANSFORM_FLIP_V) {
    819             ovutils::setMdpFlags(mdpFlags,  ovutils::OV_MDP_FLIP_V);
    820         }
    821     }
    822 
    823     if(metadata &&
    824         ((metadata->operation & PP_PARAM_HSIC)
    825         || (metadata->operation & PP_PARAM_IGC)
    826         || (metadata->operation & PP_PARAM_SHARP2))) {
    827         ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_PP_EN);
    828     }
    829 }
    830 
    831 static inline int configRotator(Rotator *rot, const Whf& whf,
    832         const eMdpFlags& mdpFlags, const eTransform& orient,
    833         const int& downscale) {
    834     rot->setSource(whf);
    835     rot->setFlags(mdpFlags);
    836     rot->setTransform(orient);
    837     rot->setDownscale(downscale);
    838     if(!rot->commit()) return -1;
    839     return 0;
    840 }
    841 
    842 /*
    843  * Sets up BORDERFILL as default base pipe and detaches RGB0.
    844  * Framebuffer is always updated using PLAY ioctl.
    845  */
    846 bool setupBasePipe(hwc_context_t *ctx) {
    847     const int dpy = HWC_DISPLAY_PRIMARY;
    848     int fb_stride = ctx->dpyAttr[dpy].stride;
    849     int fb_width = ctx->dpyAttr[dpy].xres;
    850     int fb_height = ctx->dpyAttr[dpy].yres;
    851     int fb_fd = ctx->dpyAttr[dpy].fd;
    852 
    853     mdp_overlay ovInfo;
    854     msmfb_overlay_data ovData;
    855     memset(&ovInfo, 0, sizeof(mdp_overlay));
    856     memset(&ovData, 0, sizeof(msmfb_overlay_data));
    857 
    858     ovInfo.src.format = MDP_RGB_BORDERFILL;
    859     ovInfo.src.width  = fb_width;
    860     ovInfo.src.height = fb_height;
    861     ovInfo.src_rect.w = fb_width;
    862     ovInfo.src_rect.h = fb_height;
    863     ovInfo.dst_rect.w = fb_width;
    864     ovInfo.dst_rect.h = fb_height;
    865     ovInfo.id = MSMFB_NEW_REQUEST;
    866 
    867     if (ioctl(fb_fd, MSMFB_OVERLAY_SET, &ovInfo) < 0) {
    868         ALOGE("Failed to call ioctl MSMFB_OVERLAY_SET err=%s",
    869                 strerror(errno));
    870         return false;
    871     }
    872 
    873     ovData.id = ovInfo.id;
    874     if (ioctl(fb_fd, MSMFB_OVERLAY_PLAY, &ovData) < 0) {
    875         ALOGE("Failed to call ioctl MSMFB_OVERLAY_PLAY err=%s",
    876                 strerror(errno));
    877         return false;
    878     }
    879     ctx->mBasePipeSetup = true;
    880     return true;
    881 }
    882 
    883 
    884 static inline int configMdp(Overlay *ov, const PipeArgs& parg,
    885         const eTransform& orient, const hwc_rect_t& crop,
    886         const hwc_rect_t& pos, const MetaData_t *metadata,
    887         const eDest& dest) {
    888     ov->setSource(parg, dest);
    889     ov->setTransform(orient, dest);
    890 
    891     int crop_w = crop.right - crop.left;
    892     int crop_h = crop.bottom - crop.top;
    893     Dim dcrop(crop.left, crop.top, crop_w, crop_h);
    894     ov->setCrop(dcrop, dest);
    895 
    896     int posW = pos.right - pos.left;
    897     int posH = pos.bottom - pos.top;
    898     Dim position(pos.left, pos.top, posW, posH);
    899     ov->setPosition(position, dest);
    900 
    901     if (metadata)
    902         ov->setVisualParams(*metadata, dest);
    903 
    904     if (!ov->commit(dest)) {
    905         return -1;
    906     }
    907     return 0;
    908 }
    909 
    910 static inline void updateSource(eTransform& orient, Whf& whf,
    911         hwc_rect_t& crop) {
    912     Dim srcCrop(crop.left, crop.top,
    913             crop.right - crop.left,
    914             crop.bottom - crop.top);
    915     //getMdpOrient will switch the flips if the source is 90 rotated.
    916     //Clients in Android dont factor in 90 rotation while deciding the flip.
    917     orient = static_cast<eTransform>(ovutils::getMdpOrient(orient));
    918     preRotateSource(orient, whf, srcCrop);
    919     crop.left = srcCrop.x;
    920     crop.top = srcCrop.y;
    921     crop.right = srcCrop.x + srcCrop.w;
    922     crop.bottom = srcCrop.y + srcCrop.h;
    923 }
    924 
    925 int configureLowRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
    926         const int& dpy, eMdpFlags& mdpFlags, const eZorder& z,
    927         const eIsFg& isFg, const eDest& dest, Rotator **rot) {
    928 
    929     private_handle_t *hnd = (private_handle_t *)layer->handle;
    930     if(!hnd) {
    931         ALOGE("%s: layer handle is NULL", __FUNCTION__);
    932         return -1;
    933     }
    934 
    935     MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
    936 
    937     hwc_rect_t crop = layer->sourceCrop;
    938     hwc_rect_t dst = layer->displayFrame;
    939     int transform = layer->transform;
    940     eTransform orient = static_cast<eTransform>(transform);
    941     int downscale = 0;
    942     int rotFlags = ovutils::ROT_FLAGS_NONE;
    943     Whf whf(getWidth(hnd), getHeight(hnd),
    944             getMdpFormat(hnd->format), hnd->size);
    945 
    946     if(isYuvBuffer(hnd) && ctx->mMDP.version >= qdutils::MDP_V4_2 &&
    947        ctx->mMDP.version < qdutils::MDSS_V5) {
    948         downscale =  getDownscaleFactor(
    949             crop.right - crop.left,
    950             crop.bottom - crop.top,
    951             dst.right - dst.left,
    952             dst.bottom - dst.top);
    953         if(downscale) {
    954             rotFlags = ROT_DOWNSCALE_ENABLED;
    955         }
    956     }
    957 
    958     setMdpFlags(layer, mdpFlags, downscale);
    959     trimLayer(ctx, dpy, transform, crop, dst);
    960 
    961     if(isYuvBuffer(hnd) && //if 90 component or downscale, use rot
    962             ((transform & HWC_TRANSFORM_ROT_90) || downscale)) {
    963         *rot = ctx->mRotMgr->getNext();
    964         if(*rot == NULL) return -1;
    965         //Configure rotator for pre-rotation
    966         if(configRotator(*rot, whf, mdpFlags, orient, downscale) < 0)
    967             return -1;
    968         ctx->mLayerRotMap[dpy]->add(layer, *rot);
    969         whf.format = (*rot)->getDstFormat();
    970         updateSource(orient, whf, crop);
    971         rotFlags |= ovutils::ROT_PREROTATED;
    972     }
    973 
    974     //For the mdp, since either we are pre-rotating or MDP does flips
    975     orient = OVERLAY_TRANSFORM_0;
    976     transform = 0;
    977 
    978     PipeArgs parg(mdpFlags, whf, z, isFg,
    979                   static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
    980                   (ovutils::eBlending) getBlending(layer->blending));
    981 
    982     if(configMdp(ctx->mOverlay, parg, orient, crop, dst, metadata, dest) < 0) {
    983         ALOGE("%s: commit failed for low res panel", __FUNCTION__);
    984         ctx->mLayerRotMap[dpy]->reset();
    985         return -1;
    986     }
    987     return 0;
    988 }
    989 
    990 int configureHighRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
    991         const int& dpy, eMdpFlags& mdpFlagsL, const eZorder& z,
    992         const eIsFg& isFg, const eDest& lDest, const eDest& rDest,
    993         Rotator **rot) {
    994     private_handle_t *hnd = (private_handle_t *)layer->handle;
    995     if(!hnd) {
    996         ALOGE("%s: layer handle is NULL", __FUNCTION__);
    997         return -1;
    998     }
    999 
   1000     MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
   1001 
   1002     int hw_w = ctx->dpyAttr[dpy].xres;
   1003     int hw_h = ctx->dpyAttr[dpy].yres;
   1004     hwc_rect_t crop = layer->sourceCrop;
   1005     hwc_rect_t dst = layer->displayFrame;
   1006     int transform = layer->transform;
   1007     eTransform orient = static_cast<eTransform>(transform);
   1008     const int downscale = 0;
   1009     int rotFlags = ROT_FLAGS_NONE;
   1010 
   1011     Whf whf(getWidth(hnd), getHeight(hnd),
   1012             getMdpFormat(hnd->format), hnd->size);
   1013 
   1014     setMdpFlags(layer, mdpFlagsL);
   1015     trimLayer(ctx, dpy, transform, crop, dst);
   1016 
   1017     if(isYuvBuffer(hnd) && (transform & HWC_TRANSFORM_ROT_90)) {
   1018         (*rot) = ctx->mRotMgr->getNext();
   1019         if((*rot) == NULL) return -1;
   1020         //Configure rotator for pre-rotation
   1021         if(configRotator(*rot, whf, mdpFlagsL, orient, downscale) < 0)
   1022             return -1;
   1023         ctx->mLayerRotMap[dpy]->add(layer, *rot);
   1024         whf.format = (*rot)->getDstFormat();
   1025         updateSource(orient, whf, crop);
   1026         rotFlags |= ROT_PREROTATED;
   1027     }
   1028 
   1029     eMdpFlags mdpFlagsR = mdpFlagsL;
   1030     setMdpFlags(mdpFlagsR, OV_MDSS_MDP_RIGHT_MIXER);
   1031 
   1032     hwc_rect_t tmp_cropL, tmp_dstL;
   1033     hwc_rect_t tmp_cropR, tmp_dstR;
   1034 
   1035     if(lDest != OV_INVALID) {
   1036         tmp_cropL = crop;
   1037         tmp_dstL = dst;
   1038         hwc_rect_t scissor = {0, 0, hw_w/2, hw_h };
   1039         qhwc::calculate_crop_rects(tmp_cropL, tmp_dstL, scissor, 0);
   1040     }
   1041     if(rDest != OV_INVALID) {
   1042         tmp_cropR = crop;
   1043         tmp_dstR = dst;
   1044         hwc_rect_t scissor = {hw_w/2, 0, hw_w, hw_h };
   1045         qhwc::calculate_crop_rects(tmp_cropR, tmp_dstR, scissor, 0);
   1046     }
   1047 
   1048     //When buffer is flipped, contents of mixer config also needs to swapped.
   1049     //Not needed if the layer is confined to one half of the screen.
   1050     //If rotator has been used then it has also done the flips, so ignore them.
   1051     if((orient & OVERLAY_TRANSFORM_FLIP_V) && lDest != OV_INVALID
   1052             && rDest != OV_INVALID && rot == NULL) {
   1053         hwc_rect_t new_cropR;
   1054         new_cropR.left = tmp_cropL.left;
   1055         new_cropR.right = new_cropR.left + (tmp_cropR.right - tmp_cropR.left);
   1056 
   1057         hwc_rect_t new_cropL;
   1058         new_cropL.left  = new_cropR.right;
   1059         new_cropL.right = tmp_cropR.right;
   1060 
   1061         tmp_cropL.left =  new_cropL.left;
   1062         tmp_cropL.right =  new_cropL.right;
   1063 
   1064         tmp_cropR.left = new_cropR.left;
   1065         tmp_cropR.right =  new_cropR.right;
   1066 
   1067     }
   1068 
   1069     //For the mdp, since either we are pre-rotating or MDP does flips
   1070     orient = OVERLAY_TRANSFORM_0;
   1071     transform = 0;
   1072 
   1073     //configure left mixer
   1074     if(lDest != OV_INVALID) {
   1075         PipeArgs pargL(mdpFlagsL, whf, z, isFg,
   1076                        static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
   1077                        (ovutils::eBlending) getBlending(layer->blending));
   1078 
   1079         if(configMdp(ctx->mOverlay, pargL, orient,
   1080                 tmp_cropL, tmp_dstL, metadata, lDest) < 0) {
   1081             ALOGE("%s: commit failed for left mixer config", __FUNCTION__);
   1082             return -1;
   1083         }
   1084     }
   1085 
   1086     //configure right mixer
   1087     if(rDest != OV_INVALID) {
   1088         PipeArgs pargR(mdpFlagsR, whf, z, isFg,
   1089                 static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
   1090                 (ovutils::eBlending) getBlending(layer->blending));
   1091 
   1092         tmp_dstR.right = tmp_dstR.right - tmp_dstR.left;
   1093         tmp_dstR.left = 0;
   1094         if(configMdp(ctx->mOverlay, pargR, orient,
   1095                 tmp_cropR, tmp_dstR, metadata, rDest) < 0) {
   1096             ALOGE("%s: commit failed for right mixer config", __FUNCTION__);
   1097             return -1;
   1098         }
   1099     }
   1100 
   1101     return 0;
   1102 }
   1103 
   1104 void LayerRotMap::add(hwc_layer_1_t* layer, Rotator *rot) {
   1105     if(mCount >= MAX_SESS) return;
   1106     mLayer[mCount] = layer;
   1107     mRot[mCount] = rot;
   1108     mCount++;
   1109 }
   1110 
   1111 void LayerRotMap::reset() {
   1112     for (int i = 0; i < MAX_SESS; i++) {
   1113         mLayer[i] = 0;
   1114         mRot[i] = 0;
   1115     }
   1116     mCount = 0;
   1117 }
   1118 
   1119 void LayerRotMap::setReleaseFd(const int& fence) {
   1120     for(uint32_t i = 0; i < mCount; i++) {
   1121         mRot[i]->setReleaseFd(dup(fence));
   1122     }
   1123 }
   1124 
   1125 };//namespace qhwc
   1126