hwc_utils.cpp revision 517e8b0015001fed3ea1d7bbeeda421de7fdeb2e 
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 <math.h>
22#include <sys/ioctl.h>
23#include <binder/IServiceManager.h>
24#include <EGL/egl.h>
25#include <cutils/properties.h>
26#include <gralloc_priv.h>
27#include <overlay.h>
28#include <overlayRotator.h>
29#include "hwc_utils.h"
30#include "hwc_mdpcomp.h"
31#include "hwc_fbupdate.h"
32#include "mdp_version.h"
33#include "hwc_copybit.h"
34#include "external.h"
35#include "hwc_qclient.h"
36#include "QService.h"
37#include "comptype.h"
38
39using namespace qClient;
40using namespace qService;
41using namespace android;
42using namespace overlay;
43using namespace overlay::utils;
44namespace ovutils = overlay::utils;
45
46namespace qhwc {
47
48static int openFramebufferDevice(hwc_context_t *ctx)
49{
50    struct fb_fix_screeninfo finfo;
51    struct fb_var_screeninfo info;
52
53    int fb_fd = openFb(HWC_DISPLAY_PRIMARY);
54    if(fb_fd < 0) {
55        ALOGE("%s: Error Opening FB : %s", __FUNCTION__, strerror(errno));
56        return -errno;
57    }
58
59    if (ioctl(fb_fd, FBIOGET_VSCREENINFO, &info) == -1) {
60        ALOGE("%s:Error in ioctl FBIOGET_VSCREENINFO: %s", __FUNCTION__,
61                                                       strerror(errno));
62        close(fb_fd);
63        return -errno;
64    }
65
66    if (int(info.width) <= 0 || int(info.height) <= 0) {
67        // the driver doesn't return that information
68        // default to 160 dpi
69        info.width  = ((info.xres * 25.4f)/160.0f + 0.5f);
70        info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
71    }
72
73    float xdpi = (info.xres * 25.4f) / info.width;
74    float ydpi = (info.yres * 25.4f) / info.height;
75
76#ifdef MSMFB_METADATA_GET
77    struct msmfb_metadata metadata;
78    memset(&metadata, 0 , sizeof(metadata));
79    metadata.op = metadata_op_frame_rate;
80
81    if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) {
82        ALOGE("%s:Error retrieving panel frame rate: %s", __FUNCTION__,
83                                                      strerror(errno));
84        close(fb_fd);
85        return -errno;
86    }
87
88    float fps  = metadata.data.panel_frame_rate;
89#else
90    //XXX: Remove reserved field usage on all baselines
91    //The reserved[3] field is used to store FPS by the driver.
92    float fps  = info.reserved[3] & 0xFF;
93#endif
94
95    if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
96        ALOGE("%s:Error in ioctl FBIOGET_FSCREENINFO: %s", __FUNCTION__,
97                                                       strerror(errno));
98        close(fb_fd);
99        return -errno;
100    }
101
102    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = fb_fd;
103    //xres, yres may not be 32 aligned
104    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = finfo.line_length /(info.xres/8);
105    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = info.xres;
106    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = info.yres;
107    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = xdpi;
108    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ydpi;
109    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period = 1000000000l / fps;
110
111    //Unblank primary on first boot
112    if(ioctl(fb_fd, FBIOBLANK,FB_BLANK_UNBLANK) < 0) {
113        ALOGE("%s: Failed to unblank display", __FUNCTION__);
114        return -errno;
115    }
116    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].isActive = true;
117
118    return 0;
119}
120
121void initContext(hwc_context_t *ctx)
122{
123    if(openFramebufferDevice(ctx) < 0) {
124        ALOGE("%s: failed to open framebuffer!!", __FUNCTION__);
125    }
126
127    overlay::Overlay::initOverlay();
128    ctx->mOverlay = overlay::Overlay::getInstance();
129    ctx->mRotMgr = new RotMgr();
130    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
131    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
132    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
133    const int rightSplit = qdutils::MDPVersion::getInstance().getRightSplit();
134    overlay::Overlay::initOverlay();
135    ctx->mOverlay = overlay::Overlay::getInstance();
136    ctx->mRotMgr = new RotMgr();
137
138    //Is created and destroyed only once for primary
139    //For external it could get created and destroyed multiple times depending
140    //on what external we connect to.
141    ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
142        IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
143                rightSplit, HWC_DISPLAY_PRIMARY);
144
145    // Check if the target supports copybit compostion (dyn/mdp/c2d) to
146    // decide if we need to open the copybit module.
147    int compositionType =
148        qdutils::QCCompositionType::getInstance().getCompositionType();
149
150    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
151                           qdutils::COMPOSITION_TYPE_MDP |
152                           qdutils::COMPOSITION_TYPE_C2D)) {
153            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
154    }
155
156    ctx->mExtDisplay = new ExternalDisplay(ctx);
157
158    for (uint32_t i = 0; i < MAX_DISPLAYS; i++) {
159        ctx->mLayerRotMap[i] = new LayerRotMap();
160    }
161
162    ctx->mMDPComp[HWC_DISPLAY_PRIMARY] =
163         MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
164                rightSplit, HWC_DISPLAY_PRIMARY);
165
166    MDPComp::init(ctx);
167
168    ctx->vstate.enable = false;
169    ctx->vstate.fakevsync = false;
170    ctx->mExtDispConfiguring = false;
171    ctx->mBasePipeSetup = false;
172
173    //Right now hwc starts the service but anybody could do it, or it could be
174    //independent process as well.
175    QService::init();
176    sp<IQClient> client = new QClient(ctx);
177    interface_cast<IQService>(
178            defaultServiceManager()->getService(
179            String16("display.qservice")))->connect(client);
180
181    ALOGI("Initializing Qualcomm Hardware Composer");
182    ALOGI("MDP version: %d", ctx->mMDP.version);
183}
184
185void closeContext(hwc_context_t *ctx)
186{
187    if(ctx->mOverlay) {
188        delete ctx->mOverlay;
189        ctx->mOverlay = NULL;
190    }
191
192    if(ctx->mRotMgr) {
193        delete ctx->mRotMgr;
194        ctx->mRotMgr = NULL;
195    }
196
197    for(int i = 0; i < MAX_DISPLAYS; i++) {
198        if(ctx->mCopyBit[i]) {
199            delete ctx->mCopyBit[i];
200            ctx->mCopyBit[i] = NULL;
201        }
202    }
203
204    if(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd) {
205        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
206        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
207    }
208
209    if(ctx->mExtDisplay) {
210        delete ctx->mExtDisplay;
211        ctx->mExtDisplay = NULL;
212    }
213
214    for(int i = 0; i < MAX_DISPLAYS; i++) {
215        if(ctx->mFBUpdate[i]) {
216            delete ctx->mFBUpdate[i];
217            ctx->mFBUpdate[i] = NULL;
218        }
219        if(ctx->mMDPComp[i]) {
220            delete ctx->mMDPComp[i];
221            ctx->mMDPComp[i] = NULL;
222        }
223        if(ctx->mLayerRotMap[i]) {
224            delete ctx->mLayerRotMap[i];
225            ctx->mLayerRotMap[i] = NULL;
226        }
227    }
228}
229
230
231void dumpsys_log(android::String8& buf, const char* fmt, ...)
232{
233    va_list varargs;
234    va_start(varargs, fmt);
235    buf.appendFormatV(fmt, varargs);
236    va_end(varargs);
237}
238
239/* Calculates the destination position based on the action safe rectangle */
240void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x,
241                           uint32_t& y, uint32_t& w, uint32_t& h) {
242
243    // if external supports underscan, do nothing
244    // it will be taken care in the driver
245    if(ctx->mExtDisplay->isCEUnderscanSupported())
246        return;
247
248    char value[PROPERTY_VALUE_MAX];
249    // Read action safe properties
250    property_get("persist.sys.actionsafe.width", value, "0");
251    int asWidthRatio = atoi(value);
252    property_get("persist.sys.actionsafe.height", value, "0");
253    int asHeightRatio = atoi(value);
254
255    if(!asWidthRatio && !asHeightRatio) {
256        //No action safe ratio set, return
257        return;
258    }
259
260    float wRatio = 1.0;
261    float hRatio = 1.0;
262    float xRatio = 1.0;
263    float yRatio = 1.0;
264
265    float fbWidth = ctx->dpyAttr[dpy].xres;
266    float fbHeight = ctx->dpyAttr[dpy].yres;
267
268    float asX = 0;
269    float asY = 0;
270    float asW = fbWidth;
271    float asH= fbHeight;
272
273    // based on the action safe ratio, get the Action safe rectangle
274    asW = fbWidth * (1.0f -  asWidthRatio / 100.0f);
275    asH = fbHeight * (1.0f -  asHeightRatio / 100.0f);
276    asX = (fbWidth - asW) / 2;
277    asY = (fbHeight - asH) / 2;
278
279    // calculate the position ratio
280    xRatio = (float)x/fbWidth;
281    yRatio = (float)y/fbHeight;
282    wRatio = (float)w/fbWidth;
283    hRatio = (float)h/fbHeight;
284
285    //Calculate the position...
286    x = (xRatio * asW) + asX;
287    y = (yRatio * asH) + asY;
288    w = (wRatio * asW);
289    h = (hRatio * asH);
290
291    return;
292}
293
294bool needsScaling(hwc_context_t* ctx, hwc_layer_1_t const* layer,
295        const int& dpy) {
296    int dst_w, dst_h, src_w, src_h;
297
298    hwc_rect_t displayFrame  = layer->displayFrame;
299    hwc_rect_t sourceCrop = layer->sourceCrop;
300    trimLayer(ctx, dpy, layer->transform, sourceCrop, displayFrame);
301
302    dst_w = displayFrame.right - displayFrame.left;
303    dst_h = displayFrame.bottom - displayFrame.top;
304    src_w = sourceCrop.right - sourceCrop.left;
305    src_h = sourceCrop.bottom - sourceCrop.top;
306
307    if(((src_w != dst_w) || (src_h != dst_h)))
308        return true;
309
310    return false;
311}
312
313bool isAlphaScaled(hwc_context_t* ctx, hwc_layer_1_t const* layer,
314        const int& dpy) {
315    if(needsScaling(ctx, layer, dpy) && isAlphaPresent(layer)) {
316        return true;
317    }
318    return false;
319}
320
321bool isAlphaPresent(hwc_layer_1_t const* layer) {
322    private_handle_t *hnd = (private_handle_t *)layer->handle;
323    if(hnd) {
324        int format = hnd->format;
325        switch(format) {
326        case HAL_PIXEL_FORMAT_RGBA_8888:
327        case HAL_PIXEL_FORMAT_BGRA_8888:
328            // In any more formats with Alpha go here..
329            return true;
330        default : return false;
331        }
332    }
333    return false;
334}
335
336// Let CABL know we have a YUV layer
337static void setYUVProp(int yuvCount) {
338    static char property[PROPERTY_VALUE_MAX];
339    if(yuvCount > 0) {
340        if (property_get("hw.cabl.yuv", property, NULL) > 0) {
341            if (atoi(property) != 1) {
342                property_set("hw.cabl.yuv", "1");
343            }
344        }
345    } else {
346        if (property_get("hw.cabl.yuv", property, NULL) > 0) {
347            if (atoi(property) != 0) {
348                property_set("hw.cabl.yuv", "0");
349            }
350        }
351    }
352}
353
354void setListStats(hwc_context_t *ctx,
355        const hwc_display_contents_1_t *list, int dpy) {
356    const int prevYuvCount = ctx->listStats[dpy].yuvCount;
357    memset(&ctx->listStats[dpy], 0, sizeof(ListStats));
358    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
359    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
360    ctx->listStats[dpy].skipCount = 0;
361    ctx->listStats[dpy].needsAlphaScale = false;
362    ctx->listStats[dpy].preMultipliedAlpha = false;
363    ctx->listStats[dpy].planeAlpha = false;
364    ctx->listStats[dpy].yuvCount = 0;
365
366    for (size_t i = 0; i < (size_t)ctx->listStats[dpy].numAppLayers; i++) {
367        hwc_layer_1_t const* layer = &list->hwLayers[i];
368        private_handle_t *hnd = (private_handle_t *)layer->handle;
369
370        // continue if number of app layers exceeds MAX_NUM_APP_LAYERS
371        if(ctx->listStats[dpy].numAppLayers > MAX_NUM_APP_LAYERS)
372            continue;
373
374        //reset yuv indices
375        ctx->listStats[dpy].yuvIndices[i] = -1;
376
377        if (isSkipLayer(&list->hwLayers[i])) {
378            ctx->listStats[dpy].skipCount++;
379        } else if (UNLIKELY(isYuvBuffer(hnd))) {
380            int& yuvCount = ctx->listStats[dpy].yuvCount;
381            ctx->listStats[dpy].yuvIndices[yuvCount] = i;
382            yuvCount++;
383
384            if((layer->transform & HWC_TRANSFORM_ROT_90) &&
385                    canUseRotator(ctx)) {
386                if(ctx->mOverlay->isPipeTypeAttached(OV_MDP_PIPE_DMA)) {
387                    ctx->isPaddingRound = true;
388                }
389                Overlay::setDMAMode(Overlay::DMA_BLOCK_MODE);
390            }
391        }
392        if(layer->blending == HWC_BLENDING_PREMULT)
393            ctx->listStats[dpy].preMultipliedAlpha = true;
394        if(layer->planeAlpha < 0xFF)
395            ctx->listStats[dpy].planeAlpha = true;
396        if(!ctx->listStats[dpy].needsAlphaScale)
397            ctx->listStats[dpy].needsAlphaScale =
398                    isAlphaScaled(ctx, layer, dpy);
399    }
400    setYUVProp(ctx->listStats[dpy].yuvCount);
401    //The marking of video begin/end is useful on some targets where we need
402    //to have a padding round to be able to shift pipes across mixers.
403    if(prevYuvCount != ctx->listStats[dpy].yuvCount) {
404        ctx->mVideoTransFlag = true;
405    }
406}
407
408
409static void calc_cut(double& leftCutRatio, double& topCutRatio,
410        double& rightCutRatio, double& bottomCutRatio, int orient) {
411    if(orient & HAL_TRANSFORM_FLIP_H) {
412        swap(leftCutRatio, rightCutRatio);
413    }
414    if(orient & HAL_TRANSFORM_FLIP_V) {
415        swap(topCutRatio, bottomCutRatio);
416    }
417    if(orient & HAL_TRANSFORM_ROT_90) {
418        //Anti clock swapping
419        double tmpCutRatio = leftCutRatio;
420        leftCutRatio = topCutRatio;
421        topCutRatio = rightCutRatio;
422        rightCutRatio = bottomCutRatio;
423        bottomCutRatio = tmpCutRatio;
424    }
425}
426
427bool isSecuring(hwc_context_t* ctx, hwc_layer_1_t const* layer) {
428    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
429       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
430        ctx->mSecuring) {
431        return true;
432    }
433    //  On A-Family, Secure policy is applied system wide and not on
434    //  buffers.
435    if (isSecureModePolicy(ctx->mMDP.version)) {
436        private_handle_t *hnd = (private_handle_t *)layer->handle;
437        if(ctx->mSecureMode) {
438            if (! isSecureBuffer(hnd)) {
439                // This code path executes for the following usecase:
440                // Some Apps in which first few seconds, framework
441                // sends non-secure buffer and with out destroying
442                // surfaces, switches to secure buffer thereby exposing
443                // vulnerability on A-family devices. Catch this situation
444                // and handle it gracefully by allowing it to be composed by
445                // GPU.
446                ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle non-secure video layer"
447                         "during secure playback gracefully", __FUNCTION__);
448                return true;
449            }
450        } else {
451            if (isSecureBuffer(hnd)) {
452                // This code path executes for the following usecase:
453                // For some Apps, when User terminates playback, Framework
454                // doesnt destroy video surface and video surface still
455                // comes to Display HAL. This exposes vulnerability on
456                // A-family. Catch this situation and handle it gracefully
457                // by allowing it to be composed by GPU.
458                ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle secure video layer"
459                         "during non-secure playback gracefully", __FUNCTION__);
460                return true;
461            }
462        }
463    }
464    return false;
465}
466
467bool isSecureModePolicy(int mdpVersion) {
468    if (mdpVersion < qdutils::MDSS_V5)
469        return true;
470    else
471        return false;
472}
473
474int getBlending(int blending) {
475    switch(blending) {
476    case HWC_BLENDING_NONE:
477        return overlay::utils::OVERLAY_BLENDING_OPAQUE;
478    case HWC_BLENDING_PREMULT:
479        return overlay::utils::OVERLAY_BLENDING_PREMULT;
480    case HWC_BLENDING_COVERAGE :
481    default:
482        return overlay::utils::OVERLAY_BLENDING_COVERAGE;
483    }
484}
485
486//Crops source buffer against destination and FB boundaries
487void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
488                          const hwc_rect_t& scissor, int orient) {
489
490    int& crop_l = crop.left;
491    int& crop_t = crop.top;
492    int& crop_r = crop.right;
493    int& crop_b = crop.bottom;
494    int crop_w = crop.right - crop.left;
495    int crop_h = crop.bottom - crop.top;
496
497    int& dst_l = dst.left;
498    int& dst_t = dst.top;
499    int& dst_r = dst.right;
500    int& dst_b = dst.bottom;
501    int dst_w = abs(dst.right - dst.left);
502    int dst_h = abs(dst.bottom - dst.top);
503
504    const int& sci_l = scissor.left;
505    const int& sci_t = scissor.top;
506    const int& sci_r = scissor.right;
507    const int& sci_b = scissor.bottom;
508    int sci_w = abs(sci_r - sci_l);
509    int sci_h = abs(sci_b - sci_t);
510
511    double leftCutRatio = 0.0, rightCutRatio = 0.0, topCutRatio = 0.0,
512            bottomCutRatio = 0.0;
513
514    if(dst_l < sci_l) {
515        leftCutRatio = (double)(sci_l - dst_l) / (double)dst_w;
516        dst_l = sci_l;
517    }
518
519    if(dst_r > sci_r) {
520        rightCutRatio = (double)(dst_r - sci_r) / (double)dst_w;
521        dst_r = sci_r;
522    }
523
524    if(dst_t < sci_t) {
525        topCutRatio = (double)(sci_t - dst_t) / (double)dst_h;
526        dst_t = sci_t;
527    }
528
529    if(dst_b > sci_b) {
530        bottomCutRatio = (double)(dst_b - sci_b) / (double)dst_h;
531        dst_b = sci_b;
532    }
533
534    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
535    crop_l += crop_w * leftCutRatio;
536    crop_t += crop_h * topCutRatio;
537    crop_r -= crop_w * rightCutRatio;
538    crop_b -= crop_h * bottomCutRatio;
539}
540
541void getNonWormholeRegion(hwc_display_contents_1_t* list,
542                              hwc_rect_t& nwr)
543{
544    uint32_t last = list->numHwLayers - 1;
545    hwc_rect_t fbDisplayFrame = list->hwLayers[last].displayFrame;
546    //Initiliaze nwr to first frame
547    nwr.left =  list->hwLayers[0].displayFrame.left;
548    nwr.top =  list->hwLayers[0].displayFrame.top;
549    nwr.right =  list->hwLayers[0].displayFrame.right;
550    nwr.bottom =  list->hwLayers[0].displayFrame.bottom;
551
552    for (uint32_t i = 1; i < last; i++) {
553        hwc_rect_t displayFrame = list->hwLayers[i].displayFrame;
554        nwr.left   = min(nwr.left, displayFrame.left);
555        nwr.top    = min(nwr.top, displayFrame.top);
556        nwr.right  = max(nwr.right, displayFrame.right);
557        nwr.bottom = max(nwr.bottom, displayFrame.bottom);
558    }
559
560    //Intersect with the framebuffer
561    nwr.left   = max(nwr.left, fbDisplayFrame.left);
562    nwr.top    = max(nwr.top, fbDisplayFrame.top);
563    nwr.right  = min(nwr.right, fbDisplayFrame.right);
564    nwr.bottom = min(nwr.bottom, fbDisplayFrame.bottom);
565
566}
567
568bool isExternalActive(hwc_context_t* ctx) {
569    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
570}
571
572void closeAcquireFds(hwc_display_contents_1_t* list) {
573    if(LIKELY(list)) {
574        for(uint32_t i = 0; i < list->numHwLayers; i++) {
575            //Close the acquireFenceFds
576            //HWC_FRAMEBUFFER are -1 already by SF, rest we close.
577            if(list->hwLayers[i].acquireFenceFd >= 0) {
578                close(list->hwLayers[i].acquireFenceFd);
579                list->hwLayers[i].acquireFenceFd = -1;
580            }
581        }
582    }
583}
584
585int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
586        int fd) {
587    int ret = 0;
588    int acquireFd[MAX_NUM_APP_LAYERS];
589    int count = 0;
590    int releaseFd = -1;
591    int fbFd = -1;
592    int rotFd = -1;
593    bool swapzero = false;
594    int mdpVersion = qdutils::MDPVersion::getInstance().getMDPVersion();
595
596    struct mdp_buf_sync data;
597    memset(&data, 0, sizeof(data));
598    //Until B-family supports sync for rotator
599    if(mdpVersion >= qdutils::MDSS_V5) {
600        data.flags = MDP_BUF_SYNC_FLAG_WAIT;
601    }
602    data.acq_fen_fd = acquireFd;
603    data.rel_fen_fd = &releaseFd;
604
605    char property[PROPERTY_VALUE_MAX];
606    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
607        if(atoi(property) == 0)
608            swapzero = true;
609    }
610
611#ifndef MDSS_TARGET
612    //Send acquireFenceFds to rotator
613    if(mdpVersion < qdutils::MDSS_V5) {
614        //A-family
615        int rotFd = ctx->mRotMgr->getRotDevFd();
616        struct msm_rotator_buf_sync rotData;
617
618        for(uint32_t i = 0; i < ctx->mLayerRotMap[dpy]->getCount(); i++) {
619            memset(&rotData, 0, sizeof(rotData));
620            int& acquireFenceFd =
621                ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd;
622            rotData.acq_fen_fd = acquireFenceFd;
623            rotData.session_id = ctx->mLayerRotMap[dpy]->getRot(i)->getSessId();
624            ioctl(rotFd, MSM_ROTATOR_IOCTL_BUFFER_SYNC, &rotData);
625            close(acquireFenceFd);
626             //For MDP to wait on.
627            acquireFenceFd = dup(rotData.rel_fen_fd);
628            //A buffer is free to be used by producer as soon as its copied to
629            //rotator.
630            ctx->mLayerRotMap[dpy]->getLayer(i)->releaseFenceFd =
631                    rotData.rel_fen_fd;
632        }
633    } else {
634        //TODO B-family
635    }
636
637#endif
638    //Accumulate acquireFenceFds for MDP
639    for(uint32_t i = 0; i < list->numHwLayers; i++) {
640        if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
641                        list->hwLayers[i].acquireFenceFd >= 0) {
642            if(UNLIKELY(swapzero))
643                acquireFd[count++] = -1;
644            else
645                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
646        }
647        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
648            if(UNLIKELY(swapzero))
649                acquireFd[count++] = -1;
650            else if(fd >= 0) {
651                //set the acquireFD from fd - which is coming from c2d
652                acquireFd[count++] = fd;
653                // Buffer sync IOCTL should be async when using c2d fence is
654                // used
655                data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
656            } else if(list->hwLayers[i].acquireFenceFd >= 0)
657                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
658        }
659    }
660
661    data.acq_fen_fd_cnt = count;
662    fbFd = ctx->dpyAttr[dpy].fd;
663
664    //Waits for acquire fences, returns a release fence
665    if(LIKELY(!swapzero)) {
666        uint64_t start = systemTime();
667        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
668        ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
669                            __FUNCTION__, (size_t) ns2ms(systemTime() - start));
670    }
671
672    if(ret < 0) {
673        ALOGE("%s: ioctl MSMFB_BUFFER_SYNC failed, err=%s",
674                  __FUNCTION__, strerror(errno));
675        ALOGE("%s: acq_fen_fd_cnt=%d flags=%d fd=%d dpy=%d numHwLayers=%d",
676              __FUNCTION__, data.acq_fen_fd_cnt, data.flags, fbFd,
677              dpy, list->numHwLayers);
678    }
679
680    for(uint32_t i = 0; i < list->numHwLayers; i++) {
681        if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
682           list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
683            //Populate releaseFenceFds.
684            if(UNLIKELY(swapzero)) {
685                list->hwLayers[i].releaseFenceFd = -1;
686            } else if(list->hwLayers[i].releaseFenceFd < 0) {
687                //If rotator has not already populated this field.
688                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
689            }
690        }
691    }
692
693    if(fd >= 0) {
694        close(fd);
695        fd = -1;
696    }
697
698    if (ctx->mCopyBit[dpy])
699        ctx->mCopyBit[dpy]->setReleaseFd(releaseFd);
700
701    //A-family
702    if(mdpVersion < qdutils::MDSS_V5) {
703        //Signals when MDP finishes reading rotator buffers.
704        ctx->mLayerRotMap[dpy]->setReleaseFd(releaseFd);
705    }
706
707    if(UNLIKELY(swapzero)){
708        list->retireFenceFd = -1;
709        close(releaseFd);
710    } else {
711        list->retireFenceFd = releaseFd;
712    }
713
714    return ret;
715}
716
717void trimLayer(hwc_context_t *ctx, const int& dpy, const int& transform,
718        hwc_rect_t& crop, hwc_rect_t& dst) {
719    int hw_w = ctx->dpyAttr[dpy].xres;
720    int hw_h = ctx->dpyAttr[dpy].yres;
721    if(dst.left < 0 || dst.top < 0 ||
722            dst.right > hw_w || dst.bottom > hw_h) {
723        hwc_rect_t scissor = {0, 0, hw_w, hw_h };
724        qhwc::calculate_crop_rects(crop, dst, scissor, transform);
725    }
726}
727
728void setMdpFlags(hwc_layer_1_t *layer,
729        ovutils::eMdpFlags &mdpFlags,
730        int rotDownscale) {
731    private_handle_t *hnd = (private_handle_t *)layer->handle;
732    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
733    const int& transform = layer->transform;
734
735    if(layer->blending == HWC_BLENDING_PREMULT) {
736        ovutils::setMdpFlags(mdpFlags,
737                ovutils::OV_MDP_BLEND_FG_PREMULT);
738    }
739
740    if(isYuvBuffer(hnd)) {
741        if(isSecureBuffer(hnd)) {
742            ovutils::setMdpFlags(mdpFlags,
743                    ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
744        }
745        if(metadata && (metadata->operation & PP_PARAM_INTERLACED) &&
746                metadata->interlaced) {
747            ovutils::setMdpFlags(mdpFlags,
748                    ovutils::OV_MDP_DEINTERLACE);
749        }
750        //Pre-rotation will be used using rotator.
751        if(transform & HWC_TRANSFORM_ROT_90) {
752            ovutils::setMdpFlags(mdpFlags,
753                    ovutils::OV_MDP_SOURCE_ROTATED_90);
754        }
755    }
756
757    //No 90 component and no rot-downscale then flips done by MDP
758    //If we use rot then it might as well do flips
759    if(!(layer->transform & HWC_TRANSFORM_ROT_90) && !rotDownscale) {
760        if(layer->transform & HWC_TRANSFORM_FLIP_H) {
761            ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_FLIP_H);
762        }
763
764        if(layer->transform & HWC_TRANSFORM_FLIP_V) {
765            ovutils::setMdpFlags(mdpFlags,  ovutils::OV_MDP_FLIP_V);
766        }
767    }
768
769    if(metadata &&
770        ((metadata->operation & PP_PARAM_HSIC)
771        || (metadata->operation & PP_PARAM_IGC)
772        || (metadata->operation & PP_PARAM_SHARP2))) {
773        ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_PP_EN);
774    }
775}
776
777int configRotator(Rotator *rot, const Whf& whf,
778        hwc_rect_t& crop, const eMdpFlags& mdpFlags,
779        const eTransform& orient, const int& downscale) {
780    rot->setSource(whf);
781
782    if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
783        qdutils::MDSS_V5) {
784        uint32_t crop_w = (crop.right - crop.left);
785        uint32_t crop_h = (crop.bottom - crop.top);
786        if (ovutils::isYuv(whf.format)) {
787            ovutils::normalizeCrop((uint32_t&)crop.left, crop_w);
788            ovutils::normalizeCrop((uint32_t&)crop.top, crop_h);
789            // For interlaced, crop.h should be 4-aligned
790            if ((mdpFlags & ovutils::OV_MDP_DEINTERLACE) && (crop_h % 4))
791                crop_h = ovutils::aligndown(crop_h, 4);
792            crop.right = crop.left + crop_w;
793            crop.bottom = crop.top + crop_h;
794        }
795        Dim rotCrop(crop.left, crop.top, crop_w, crop_h);
796        rot->setCrop(rotCrop);
797    }
798
799    rot->setFlags(mdpFlags);
800    rot->setTransform(orient);
801    rot->setDownscale(downscale);
802    if(!rot->commit()) return -1;
803    return 0;
804}
805
806/*
807 * Sets up BORDERFILL as default base pipe and detaches RGB0.
808 * Framebuffer is always updated using PLAY ioctl.
809 */
810bool setupBasePipe(hwc_context_t *ctx) {
811    const int dpy = HWC_DISPLAY_PRIMARY;
812    int fb_stride = ctx->dpyAttr[dpy].stride;
813    int fb_width = ctx->dpyAttr[dpy].xres;
814    int fb_height = ctx->dpyAttr[dpy].yres;
815    int fb_fd = ctx->dpyAttr[dpy].fd;
816
817    mdp_overlay ovInfo;
818    msmfb_overlay_data ovData;
819    memset(&ovInfo, 0, sizeof(mdp_overlay));
820    memset(&ovData, 0, sizeof(msmfb_overlay_data));
821
822    ovInfo.src.format = MDP_RGB_BORDERFILL;
823    ovInfo.src.width  = fb_width;
824    ovInfo.src.height = fb_height;
825    ovInfo.src_rect.w = fb_width;
826    ovInfo.src_rect.h = fb_height;
827    ovInfo.dst_rect.w = fb_width;
828    ovInfo.dst_rect.h = fb_height;
829    ovInfo.id = MSMFB_NEW_REQUEST;
830
831    if (ioctl(fb_fd, MSMFB_OVERLAY_SET, &ovInfo) < 0) {
832        ALOGE("Failed to call ioctl MSMFB_OVERLAY_SET err=%s",
833                strerror(errno));
834        return false;
835    }
836
837    ovData.id = ovInfo.id;
838    if (ioctl(fb_fd, MSMFB_OVERLAY_PLAY, &ovData) < 0) {
839        ALOGE("Failed to call ioctl MSMFB_OVERLAY_PLAY err=%s",
840                strerror(errno));
841        return false;
842    }
843    ctx->mBasePipeSetup = true;
844    return true;
845}
846
847int configMdp(Overlay *ov, const PipeArgs& parg,
848        const eTransform& orient, const hwc_rect_t& crop,
849        const hwc_rect_t& pos, const MetaData_t *metadata,
850        const eDest& dest) {
851    ov->setSource(parg, dest);
852    ov->setTransform(orient, dest);
853
854    int crop_w = crop.right - crop.left;
855    int crop_h = crop.bottom - crop.top;
856    Dim dcrop(crop.left, crop.top, crop_w, crop_h);
857    ov->setCrop(dcrop, dest);
858
859    int posW = pos.right - pos.left;
860    int posH = pos.bottom - pos.top;
861    Dim position(pos.left, pos.top, posW, posH);
862    ov->setPosition(position, dest);
863
864    if (metadata)
865        ov->setVisualParams(*metadata, dest);
866
867    if (!ov->commit(dest)) {
868        return -1;
869    }
870    return 0;
871}
872
873void updateSource(eTransform& orient, Whf& whf,
874        hwc_rect_t& crop) {
875    Dim srcCrop(crop.left, crop.top,
876            crop.right - crop.left,
877            crop.bottom - crop.top);
878    orient = static_cast<eTransform>(ovutils::getMdpOrient(orient));
879    preRotateSource(orient, whf, srcCrop);
880    if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
881        qdutils::MDSS_V5) {
882        // Source for overlay will be the cropped (and rotated)
883        crop.left = 0;
884        crop.top = 0;
885        crop.right = srcCrop.w;
886        crop.bottom = srcCrop.h;
887        // Set width & height equal to sourceCrop w & h
888        whf.w = srcCrop.w;
889        whf.h = srcCrop.h;
890    } else {
891        crop.left = srcCrop.x;
892        crop.top = srcCrop.y;
893        crop.right = srcCrop.x + srcCrop.w;
894        crop.bottom = srcCrop.y + srcCrop.h;
895    }
896}
897
898int configureLowRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
899        const int& dpy, eMdpFlags& mdpFlags, const eZorder& z,
900        const eIsFg& isFg, const eDest& dest, Rotator **rot) {
901
902    private_handle_t *hnd = (private_handle_t *)layer->handle;
903    if(!hnd) {
904        ALOGE("%s: layer handle is NULL", __FUNCTION__);
905        ctx->mLayerRotMap[dpy]->reset();
906        return -1;
907    }
908
909    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
910
911    hwc_rect_t crop = layer->sourceCrop;
912    hwc_rect_t dst = layer->displayFrame;
913    int transform = layer->transform;
914    eTransform orient = static_cast<eTransform>(transform);
915    int downscale = 0;
916    int rotFlags = ovutils::ROT_FLAGS_NONE;
917    Whf whf(hnd->width, hnd->height,
918            getMdpFormat(hnd->format), hnd->size);
919
920    uint32_t x = dst.left, y  = dst.top;
921    uint32_t w = dst.right - dst.left;
922    uint32_t h = dst.bottom - dst.top;
923
924    if(dpy) {
925        // Calculate the actionsafe dimensions for External(dpy = 1 or 2)
926        getActionSafePosition(ctx, dpy, x, y, w, h);
927        // Convert position to hwc_rect_t
928        dst.left = x;
929        dst.top = y;
930        dst.right = w + dst.left;
931        dst.bottom = h + dst.top;
932    }
933
934    if(isYuvBuffer(hnd) && ctx->mMDP.version >= qdutils::MDP_V4_2 &&
935       ctx->mMDP.version < qdutils::MDSS_V5) {
936        downscale =  getDownscaleFactor(
937            crop.right - crop.left,
938            crop.bottom - crop.top,
939            dst.right - dst.left,
940            dst.bottom - dst.top);
941        if(downscale) {
942            rotFlags = ROT_DOWNSCALE_ENABLED;
943        }
944    }
945
946    setMdpFlags(layer, mdpFlags, downscale);
947    trimLayer(ctx, dpy, transform, crop, dst);
948
949    if(isYuvBuffer(hnd) && //if 90 component or downscale, use rot
950            ((transform & HWC_TRANSFORM_ROT_90) || downscale)) {
951        *rot = ctx->mRotMgr->getNext();
952        if(*rot == NULL) return -1;
953        BwcPM::setBwc(ctx, crop, dst, transform, mdpFlags);
954        //Configure rotator for pre-rotation
955        if(configRotator(*rot, whf, crop, mdpFlags, orient, downscale) < 0) {
956            ALOGE("%s: configRotator failed!", __FUNCTION__);
957            ctx->mOverlay->clear(dpy);
958            return -1;
959        }
960        ctx->mLayerRotMap[dpy]->add(layer, *rot);
961        whf.format = (*rot)->getDstFormat();
962        updateSource(orient, whf, crop);
963        rotFlags |= ovutils::ROT_PREROTATED;
964    }
965
966    //For the mdp, since either we are pre-rotating or MDP does flips
967    orient = OVERLAY_TRANSFORM_0;
968    transform = 0;
969
970    PipeArgs parg(mdpFlags, whf, z, isFg,
971                  static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
972                  (ovutils::eBlending) getBlending(layer->blending));
973
974    if(configMdp(ctx->mOverlay, parg, orient, crop, dst, metadata, dest) < 0) {
975        ALOGE("%s: commit failed for low res panel", __FUNCTION__);
976        ctx->mLayerRotMap[dpy]->reset();
977        return -1;
978    }
979    return 0;
980}
981
982int configureHighRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
983        const int& dpy, eMdpFlags& mdpFlagsL, const eZorder& z,
984        const eIsFg& isFg, const eDest& lDest, const eDest& rDest,
985        Rotator **rot) {
986    private_handle_t *hnd = (private_handle_t *)layer->handle;
987    if(!hnd) {
988        ALOGE("%s: layer handle is NULL", __FUNCTION__);
989        return -1;
990    }
991
992    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
993
994    int hw_w = ctx->dpyAttr[dpy].xres;
995    int hw_h = ctx->dpyAttr[dpy].yres;
996    hwc_rect_t crop = layer->sourceCrop;
997    hwc_rect_t dst = layer->displayFrame;
998    int transform = layer->transform;
999    eTransform orient = static_cast<eTransform>(transform);
1000    const int downscale = 0;
1001    int rotFlags = ROT_FLAGS_NONE;
1002
1003    Whf whf(hnd->width, hnd->height,
1004            getMdpFormat(hnd->format), hnd->size);
1005
1006    setMdpFlags(layer, mdpFlagsL, 0);
1007    trimLayer(ctx, dpy, transform, crop, dst);
1008
1009    if(isYuvBuffer(hnd) && (transform & HWC_TRANSFORM_ROT_90)) {
1010        (*rot) = ctx->mRotMgr->getNext();
1011        if((*rot) == NULL) return -1;
1012        //Configure rotator for pre-rotation
1013        if(configRotator(*rot, whf, crop, mdpFlagsL, orient, downscale) < 0) {
1014            ALOGE("%s: configRotator failed!", __FUNCTION__);
1015            ctx->mOverlay->clear(dpy);
1016            return -1;
1017        }
1018        ctx->mLayerRotMap[dpy]->add(layer, *rot);
1019        whf.format = (*rot)->getDstFormat();
1020        updateSource(orient, whf, crop);
1021        rotFlags |= ROT_PREROTATED;
1022    }
1023
1024    eMdpFlags mdpFlagsR = mdpFlagsL;
1025    setMdpFlags(mdpFlagsR, OV_MDSS_MDP_RIGHT_MIXER);
1026
1027    hwc_rect_t tmp_cropL, tmp_dstL;
1028    hwc_rect_t tmp_cropR, tmp_dstR;
1029
1030    const int lSplit = getLeftSplit(ctx, dpy);
1031
1032    if(lDest != OV_INVALID) {
1033        tmp_cropL = crop;
1034        tmp_dstL = dst;
1035        hwc_rect_t scissor = {0, 0, lSplit, hw_h };
1036        qhwc::calculate_crop_rects(tmp_cropL, tmp_dstL, scissor, 0);
1037    }
1038    if(rDest != OV_INVALID) {
1039        tmp_cropR = crop;
1040        tmp_dstR = dst;
1041        hwc_rect_t scissor = {lSplit, 0, hw_w, hw_h };
1042        qhwc::calculate_crop_rects(tmp_cropR, tmp_dstR, scissor, 0);
1043    }
1044
1045    //When buffer is H-flipped, contents of mixer config also needs to swapped
1046    //Not needed if the layer is confined to one half of the screen.
1047    //If rotator has been used then it has also done the flips, so ignore them.
1048    if((orient & OVERLAY_TRANSFORM_FLIP_H) && lDest != OV_INVALID
1049            && rDest != OV_INVALID && (*rot) == NULL) {
1050        hwc_rect_t new_cropR;
1051        new_cropR.left = tmp_cropL.left;
1052        new_cropR.right = new_cropR.left + (tmp_cropR.right - tmp_cropR.left);
1053
1054        hwc_rect_t new_cropL;
1055        new_cropL.left  = new_cropR.right;
1056        new_cropL.right = tmp_cropR.right;
1057
1058        tmp_cropL.left =  new_cropL.left;
1059        tmp_cropL.right =  new_cropL.right;
1060
1061        tmp_cropR.left = new_cropR.left;
1062        tmp_cropR.right =  new_cropR.right;
1063
1064    }
1065
1066    //For the mdp, since either we are pre-rotating or MDP does flips
1067    orient = OVERLAY_TRANSFORM_0;
1068    transform = 0;
1069
1070    //configure left mixer
1071    if(lDest != OV_INVALID) {
1072        PipeArgs pargL(mdpFlagsL, whf, z, isFg,
1073                       static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
1074                       (ovutils::eBlending) getBlending(layer->blending));
1075
1076        if(configMdp(ctx->mOverlay, pargL, orient,
1077                tmp_cropL, tmp_dstL, metadata, lDest) < 0) {
1078            ALOGE("%s: commit failed for left mixer config", __FUNCTION__);
1079            return -1;
1080        }
1081    }
1082
1083    //configure right mixer
1084    if(rDest != OV_INVALID) {
1085        PipeArgs pargR(mdpFlagsR, whf, z, isFg,
1086                static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
1087                (ovutils::eBlending) getBlending(layer->blending));
1088
1089        tmp_dstR.right = tmp_dstR.right - lSplit;
1090        tmp_dstR.left = tmp_dstR.left - lSplit;
1091        if(configMdp(ctx->mOverlay, pargR, orient,
1092                tmp_cropR, tmp_dstR, metadata, rDest) < 0) {
1093            ALOGE("%s: commit failed for right mixer config", __FUNCTION__);
1094            return -1;
1095        }
1096    }
1097
1098    return 0;
1099}
1100
1101bool canUseRotator(hwc_context_t *ctx) {
1102    if(qdutils::MDPVersion::getInstance().is8x26() &&
1103            ctx->mExtDisplay->isExternalConnected()) {
1104        return false;
1105    }
1106    if(ctx->mMDP.version == qdutils::MDP_V3_0_4)
1107        return false;
1108    return true;
1109}
1110
1111int getLeftSplit(hwc_context_t *ctx, const int& dpy) {
1112    //Default even split for all displays with high res
1113    int lSplit = ctx->dpyAttr[dpy].xres / 2;
1114    if(dpy == HWC_DISPLAY_PRIMARY &&
1115            qdutils::MDPVersion::getInstance().getLeftSplit()) {
1116        //Override if split published by driver for primary
1117        lSplit = qdutils::MDPVersion::getInstance().getLeftSplit();
1118    }
1119    return lSplit;
1120}
1121
1122void BwcPM::setBwc(hwc_context_t *ctx, const hwc_rect_t& crop,
1123            const hwc_rect_t& dst, const int& transform,
1124            ovutils::eMdpFlags& mdpFlags) {
1125    //Target doesnt support Bwc
1126    if(!qdutils::MDPVersion::getInstance().supportsBWC()) {
1127        return;
1128    }
1129    //src width > MAX mixer supported dim
1130    if((crop.right - crop.left) > qdutils::MAX_DISPLAY_DIM) {
1131        return;
1132    }
1133    //External connected
1134    if(ctx->mExtDisplay->isExternalConnected()) {
1135        return;
1136    }
1137    //Decimation necessary, cannot use BWC. H/W requirement.
1138    if(qdutils::MDPVersion::getInstance().supportsDecimation()) {
1139        int src_w = crop.right - crop.left;
1140        int src_h = crop.bottom - crop.top;
1141        int dst_w = dst.right - dst.left;
1142        int dst_h = dst.bottom - dst.top;
1143        if(transform & HAL_TRANSFORM_ROT_90) {
1144            swap(src_w, src_h);
1145        }
1146        float horDscale = 0.0f;
1147        float verDscale = 0.0f;
1148        int horzDeci = 0;
1149        int vertDeci = 0;
1150        ovutils::getDecimationFactor(src_w, src_h, dst_w, dst_h, horDscale,
1151                verDscale);
1152        //TODO Use log2f once math.h has it
1153        if((int)horDscale)
1154            horzDeci = (int)(log(horDscale) / log(2));
1155        if((int)verDscale)
1156            vertDeci = (int)(log(verDscale) / log(2));
1157        if(horzDeci || vertDeci) return;
1158    }
1159    //Property
1160    char value[PROPERTY_VALUE_MAX];
1161    property_get("debug.disable.bwc", value, "0");
1162     if(atoi(value)) return;
1163
1164    ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDSS_MDP_BWC_EN);
1165}
1166
1167void LayerRotMap::add(hwc_layer_1_t* layer, Rotator *rot) {
1168    if(mCount >= MAX_SESS) return;
1169    mLayer[mCount] = layer;
1170    mRot[mCount] = rot;
1171    mCount++;
1172}
1173
1174void LayerRotMap::reset() {
1175    for (int i = 0; i < MAX_SESS; i++) {
1176        mLayer[i] = 0;
1177        mRot[i] = 0;
1178    }
1179    mCount = 0;
1180}
1181
1182void LayerRotMap::setReleaseFd(const int& fence) {
1183    for(uint32_t i = 0; i < mCount; i++) {
1184        mRot[i]->setReleaseFd(dup(fence));
1185    }
1186}
1187
1188};//namespace qhwc
1189