hwc_utils.cpp revision 5444bcea32ab111a723ec19f907704f465591498
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 <overlayWriteback.h>
30#include "hwc_utils.h"
31#include "hwc_mdpcomp.h"
32#include "hwc_fbupdate.h"
33#include "hwc_ad.h"
34#include "mdp_version.h"
35#include "hwc_copybit.h"
36#include "external.h"
37#include "hwc_qclient.h"
38#include "QService.h"
39#include "comptype.h"
40
41using namespace qClient;
42using namespace qService;
43using namespace android;
44using namespace overlay;
45using namespace overlay::utils;
46namespace ovutils = overlay::utils;
47
48namespace qhwc {
49
50static int openFramebufferDevice(hwc_context_t *ctx)
51{
52    struct fb_fix_screeninfo finfo;
53    struct fb_var_screeninfo info;
54
55    int fb_fd = openFb(HWC_DISPLAY_PRIMARY);
56    if(fb_fd < 0) {
57        ALOGE("%s: Error Opening FB : %s", __FUNCTION__, strerror(errno));
58        return -errno;
59    }
60
61    if (ioctl(fb_fd, FBIOGET_VSCREENINFO, &info) == -1) {
62        ALOGE("%s:Error in ioctl FBIOGET_VSCREENINFO: %s", __FUNCTION__,
63                                                       strerror(errno));
64        close(fb_fd);
65        return -errno;
66    }
67
68    if (int(info.width) <= 0 || int(info.height) <= 0) {
69        // the driver doesn't return that information
70        // default to 160 dpi
71        info.width  = ((info.xres * 25.4f)/160.0f + 0.5f);
72        info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
73    }
74
75    float xdpi = (info.xres * 25.4f) / info.width;
76    float ydpi = (info.yres * 25.4f) / info.height;
77
78#ifdef MSMFB_METADATA_GET
79    struct msmfb_metadata metadata;
80    memset(&metadata, 0 , sizeof(metadata));
81    metadata.op = metadata_op_frame_rate;
82
83    if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) {
84        ALOGE("%s:Error retrieving panel frame rate: %s", __FUNCTION__,
85                                                      strerror(errno));
86        close(fb_fd);
87        return -errno;
88    }
89
90    float fps  = metadata.data.panel_frame_rate;
91#else
92    //XXX: Remove reserved field usage on all baselines
93    //The reserved[3] field is used to store FPS by the driver.
94    float fps  = info.reserved[3] & 0xFF;
95#endif
96
97    if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
98        ALOGE("%s:Error in ioctl FBIOGET_FSCREENINFO: %s", __FUNCTION__,
99                                                       strerror(errno));
100        close(fb_fd);
101        return -errno;
102    }
103
104    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = fb_fd;
105    //xres, yres may not be 32 aligned
106    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = finfo.line_length /(info.xres/8);
107    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = info.xres;
108    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = info.yres;
109    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = xdpi;
110    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ydpi;
111    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period = 1000000000l / fps;
112
113    //Unblank primary on first boot
114    if(ioctl(fb_fd, FBIOBLANK,FB_BLANK_UNBLANK) < 0) {
115        ALOGE("%s: Failed to unblank display", __FUNCTION__);
116        return -errno;
117    }
118    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].isActive = true;
119
120    return 0;
121}
122
123void initContext(hwc_context_t *ctx)
124{
125    memset(&ctx->dpyAttr, 0, sizeof(ctx->dpyAttr));
126    if(openFramebufferDevice(ctx) < 0) {
127        ALOGE("%s: failed to open framebuffer!!", __FUNCTION__);
128    }
129
130    overlay::Overlay::initOverlay();
131    ctx->mOverlay = overlay::Overlay::getInstance();
132    ctx->mRotMgr = new RotMgr();
133    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
134    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
135    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
136    const int rightSplit = qdutils::MDPVersion::getInstance().getRightSplit();
137    overlay::Overlay::initOverlay();
138    ctx->mOverlay = overlay::Overlay::getInstance();
139    ctx->mRotMgr = new RotMgr();
140
141    //Is created and destroyed only once for primary
142    //For external it could get created and destroyed multiple times depending
143    //on what external we connect to.
144    ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
145        IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
146                rightSplit, HWC_DISPLAY_PRIMARY);
147
148    // Check if the target supports copybit compostion (dyn/mdp/c2d) to
149    // decide if we need to open the copybit module.
150    int compositionType =
151        qdutils::QCCompositionType::getInstance().getCompositionType();
152
153    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
154                           qdutils::COMPOSITION_TYPE_MDP |
155                           qdutils::COMPOSITION_TYPE_C2D)) {
156            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
157    }
158
159    ctx->mExtDisplay = new ExternalDisplay(ctx);
160
161    for (uint32_t i = 0; i < MAX_DISPLAYS; i++) {
162        ctx->mLayerRotMap[i] = new LayerRotMap();
163    }
164
165    ctx->mMDPComp[HWC_DISPLAY_PRIMARY] =
166         MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
167                rightSplit, HWC_DISPLAY_PRIMARY);
168
169    MDPComp::init(ctx);
170    ctx->mAD = new AssertiveDisplay();
171
172    ctx->vstate.enable = false;
173    ctx->vstate.fakevsync = false;
174
175    //Right now hwc starts the service but anybody could do it, or it could be
176    //independent process as well.
177    QService::init();
178    sp<IQClient> client = new QClient(ctx);
179    interface_cast<IQService>(
180            defaultServiceManager()->getService(
181            String16("display.qservice")))->connect(client);
182
183    ALOGI("Initializing Qualcomm Hardware Composer");
184    ALOGI("MDP version: %d", ctx->mMDP.version);
185}
186
187void closeContext(hwc_context_t *ctx)
188{
189    if(ctx->mOverlay) {
190        delete ctx->mOverlay;
191        ctx->mOverlay = NULL;
192    }
193
194    if(ctx->mRotMgr) {
195        delete ctx->mRotMgr;
196        ctx->mRotMgr = NULL;
197    }
198
199    for(int i = 0; i < MAX_DISPLAYS; i++) {
200        if(ctx->mCopyBit[i]) {
201            delete ctx->mCopyBit[i];
202            ctx->mCopyBit[i] = NULL;
203        }
204    }
205
206    if(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd) {
207        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
208        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
209    }
210
211    if(ctx->mExtDisplay) {
212        delete ctx->mExtDisplay;
213        ctx->mExtDisplay = NULL;
214    }
215
216    for(int i = 0; i < MAX_DISPLAYS; i++) {
217        if(ctx->mFBUpdate[i]) {
218            delete ctx->mFBUpdate[i];
219            ctx->mFBUpdate[i] = NULL;
220        }
221        if(ctx->mMDPComp[i]) {
222            delete ctx->mMDPComp[i];
223            ctx->mMDPComp[i] = NULL;
224        }
225        if(ctx->mLayerRotMap[i]) {
226            delete ctx->mLayerRotMap[i];
227            ctx->mLayerRotMap[i] = NULL;
228        }
229    }
230
231    if(ctx->mAD) {
232        delete ctx->mAD;
233        ctx->mAD = NULL;
234    }
235}
236
237
238void dumpsys_log(android::String8& buf, const char* fmt, ...)
239{
240    va_list varargs;
241    va_start(varargs, fmt);
242    buf.appendFormatV(fmt, varargs);
243    va_end(varargs);
244}
245
246/* Calculates the destination position based on the action safe rectangle */
247void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x,
248                           uint32_t& y, uint32_t& w, uint32_t& h) {
249
250    // if external supports underscan, do nothing
251    // it will be taken care in the driver
252    if(ctx->mExtDisplay->isCEUnderscanSupported())
253        return;
254
255    char value[PROPERTY_VALUE_MAX];
256    // Read action safe properties
257    property_get("persist.sys.actionsafe.width", value, "0");
258    int asWidthRatio = atoi(value);
259    property_get("persist.sys.actionsafe.height", value, "0");
260    int asHeightRatio = atoi(value);
261
262    if(!asWidthRatio && !asHeightRatio) {
263        //No action safe ratio set, return
264        return;
265    }
266
267    float wRatio = 1.0;
268    float hRatio = 1.0;
269    float xRatio = 1.0;
270    float yRatio = 1.0;
271
272    float fbWidth = ctx->dpyAttr[dpy].xres;
273    float fbHeight = ctx->dpyAttr[dpy].yres;
274
275    float asX = 0;
276    float asY = 0;
277    float asW = fbWidth;
278    float asH= fbHeight;
279
280    // based on the action safe ratio, get the Action safe rectangle
281    asW = fbWidth * (1.0f -  asWidthRatio / 100.0f);
282    asH = fbHeight * (1.0f -  asHeightRatio / 100.0f);
283    asX = (fbWidth - asW) / 2;
284    asY = (fbHeight - asH) / 2;
285
286    // calculate the position ratio
287    xRatio = (float)x/fbWidth;
288    yRatio = (float)y/fbHeight;
289    wRatio = (float)w/fbWidth;
290    hRatio = (float)h/fbHeight;
291
292    //Calculate the position...
293    x = (xRatio * asW) + asX;
294    y = (yRatio * asH) + asY;
295    w = (wRatio * asW);
296    h = (hRatio * asH);
297
298    return;
299}
300
301bool needsScaling(hwc_context_t* ctx, hwc_layer_1_t const* layer,
302        const int& dpy) {
303    int dst_w, dst_h, src_w, src_h;
304
305    hwc_rect_t displayFrame  = layer->displayFrame;
306    hwc_rect_t sourceCrop = integerizeSourceCrop(layer->sourceCropf);
307    trimLayer(ctx, dpy, layer->transform, sourceCrop, displayFrame);
308
309    dst_w = displayFrame.right - displayFrame.left;
310    dst_h = displayFrame.bottom - displayFrame.top;
311    src_w = sourceCrop.right - sourceCrop.left;
312    src_h = sourceCrop.bottom - sourceCrop.top;
313
314    if(((src_w != dst_w) || (src_h != dst_h)))
315        return true;
316
317    return false;
318}
319
320bool isAlphaScaled(hwc_context_t* ctx, hwc_layer_1_t const* layer,
321        const int& dpy) {
322    if(needsScaling(ctx, layer, dpy) && isAlphaPresent(layer)) {
323        return true;
324    }
325    return false;
326}
327
328bool isAlphaPresent(hwc_layer_1_t const* layer) {
329    private_handle_t *hnd = (private_handle_t *)layer->handle;
330    if(hnd) {
331        int format = hnd->format;
332        switch(format) {
333        case HAL_PIXEL_FORMAT_RGBA_8888:
334        case HAL_PIXEL_FORMAT_BGRA_8888:
335            // In any more formats with Alpha go here..
336            return true;
337        default : return false;
338        }
339    }
340    return false;
341}
342
343// Let CABL know we have a YUV layer
344static void setYUVProp(int yuvCount) {
345    static char property[PROPERTY_VALUE_MAX];
346    if(yuvCount > 0) {
347        if (property_get("hw.cabl.yuv", property, NULL) > 0) {
348            if (atoi(property) != 1) {
349                property_set("hw.cabl.yuv", "1");
350            }
351        }
352    } else {
353        if (property_get("hw.cabl.yuv", property, NULL) > 0) {
354            if (atoi(property) != 0) {
355                property_set("hw.cabl.yuv", "0");
356            }
357        }
358    }
359}
360
361void setListStats(hwc_context_t *ctx,
362        const hwc_display_contents_1_t *list, int dpy) {
363    const int prevYuvCount = ctx->listStats[dpy].yuvCount;
364    memset(&ctx->listStats[dpy], 0, sizeof(ListStats));
365    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
366    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
367    ctx->listStats[dpy].skipCount = 0;
368    ctx->listStats[dpy].needsAlphaScale = false;
369    ctx->listStats[dpy].preMultipliedAlpha = false;
370    ctx->listStats[dpy].planeAlpha = false;
371    ctx->listStats[dpy].yuvCount = 0;
372
373    for (size_t i = 0; i < (size_t)ctx->listStats[dpy].numAppLayers; i++) {
374        hwc_layer_1_t const* layer = &list->hwLayers[i];
375        private_handle_t *hnd = (private_handle_t *)layer->handle;
376
377        // continue if number of app layers exceeds MAX_NUM_APP_LAYERS
378        if(ctx->listStats[dpy].numAppLayers > MAX_NUM_APP_LAYERS)
379            continue;
380
381        //reset yuv indices
382        ctx->listStats[dpy].yuvIndices[i] = -1;
383
384        if (isSkipLayer(&list->hwLayers[i])) {
385            ctx->listStats[dpy].skipCount++;
386        } else if (UNLIKELY(isYuvBuffer(hnd))) {
387            int& yuvCount = ctx->listStats[dpy].yuvCount;
388            ctx->listStats[dpy].yuvIndices[yuvCount] = i;
389            yuvCount++;
390
391            if((layer->transform & HWC_TRANSFORM_ROT_90) &&
392                    canUseRotator(ctx)) {
393                if(ctx->mOverlay->isPipeTypeAttached(OV_MDP_PIPE_DMA)) {
394                    ctx->isPaddingRound = true;
395                }
396                Overlay::setDMAMode(Overlay::DMA_BLOCK_MODE);
397            }
398        }
399        if(layer->blending == HWC_BLENDING_PREMULT)
400            ctx->listStats[dpy].preMultipliedAlpha = true;
401        if(layer->planeAlpha < 0xFF)
402            ctx->listStats[dpy].planeAlpha = true;
403        if(!ctx->listStats[dpy].needsAlphaScale)
404            ctx->listStats[dpy].needsAlphaScale =
405                    isAlphaScaled(ctx, layer, dpy);
406    }
407    setYUVProp(ctx->listStats[dpy].yuvCount);
408    //The marking of video begin/end is useful on some targets where we need
409    //to have a padding round to be able to shift pipes across mixers.
410    if(prevYuvCount != ctx->listStats[dpy].yuvCount) {
411        ctx->mVideoTransFlag = true;
412    }
413    if(dpy == HWC_DISPLAY_PRIMARY) {
414        ctx->mAD->markDoable(ctx, list);
415    }
416}
417
418
419static void calc_cut(double& leftCutRatio, double& topCutRatio,
420        double& rightCutRatio, double& bottomCutRatio, int orient) {
421    if(orient & HAL_TRANSFORM_FLIP_H) {
422        swap(leftCutRatio, rightCutRatio);
423    }
424    if(orient & HAL_TRANSFORM_FLIP_V) {
425        swap(topCutRatio, bottomCutRatio);
426    }
427    if(orient & HAL_TRANSFORM_ROT_90) {
428        //Anti clock swapping
429        double tmpCutRatio = leftCutRatio;
430        leftCutRatio = topCutRatio;
431        topCutRatio = rightCutRatio;
432        rightCutRatio = bottomCutRatio;
433        bottomCutRatio = tmpCutRatio;
434    }
435}
436
437bool isSecuring(hwc_context_t* ctx, hwc_layer_1_t const* layer) {
438    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
439       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
440        ctx->mSecuring) {
441        return true;
442    }
443    //  On A-Family, Secure policy is applied system wide and not on
444    //  buffers.
445    if (isSecureModePolicy(ctx->mMDP.version)) {
446        private_handle_t *hnd = (private_handle_t *)layer->handle;
447        if(ctx->mSecureMode) {
448            if (! isSecureBuffer(hnd)) {
449                // This code path executes for the following usecase:
450                // Some Apps in which first few seconds, framework
451                // sends non-secure buffer and with out destroying
452                // surfaces, switches to secure buffer thereby exposing
453                // vulnerability on A-family devices. Catch this situation
454                // and handle it gracefully by allowing it to be composed by
455                // GPU.
456                ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle non-secure video layer"
457                         "during secure playback gracefully", __FUNCTION__);
458                return true;
459            }
460        } else {
461            if (isSecureBuffer(hnd)) {
462                // This code path executes for the following usecase:
463                // For some Apps, when User terminates playback, Framework
464                // doesnt destroy video surface and video surface still
465                // comes to Display HAL. This exposes vulnerability on
466                // A-family. Catch this situation and handle it gracefully
467                // by allowing it to be composed by GPU.
468                ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle secure video layer"
469                         "during non-secure playback gracefully", __FUNCTION__);
470                return true;
471            }
472        }
473    }
474    return false;
475}
476
477bool isSecureModePolicy(int mdpVersion) {
478    if (mdpVersion < qdutils::MDSS_V5)
479        return true;
480    else
481        return false;
482}
483
484int getBlending(int blending) {
485    switch(blending) {
486    case HWC_BLENDING_NONE:
487        return overlay::utils::OVERLAY_BLENDING_OPAQUE;
488    case HWC_BLENDING_PREMULT:
489        return overlay::utils::OVERLAY_BLENDING_PREMULT;
490    case HWC_BLENDING_COVERAGE :
491    default:
492        return overlay::utils::OVERLAY_BLENDING_COVERAGE;
493    }
494}
495
496//Crops source buffer against destination and FB boundaries
497void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
498                          const hwc_rect_t& scissor, int orient) {
499
500    int& crop_l = crop.left;
501    int& crop_t = crop.top;
502    int& crop_r = crop.right;
503    int& crop_b = crop.bottom;
504    int crop_w = crop.right - crop.left;
505    int crop_h = crop.bottom - crop.top;
506
507    int& dst_l = dst.left;
508    int& dst_t = dst.top;
509    int& dst_r = dst.right;
510    int& dst_b = dst.bottom;
511    int dst_w = abs(dst.right - dst.left);
512    int dst_h = abs(dst.bottom - dst.top);
513
514    const int& sci_l = scissor.left;
515    const int& sci_t = scissor.top;
516    const int& sci_r = scissor.right;
517    const int& sci_b = scissor.bottom;
518    int sci_w = abs(sci_r - sci_l);
519    int sci_h = abs(sci_b - sci_t);
520
521    double leftCutRatio = 0.0, rightCutRatio = 0.0, topCutRatio = 0.0,
522            bottomCutRatio = 0.0;
523
524    if(dst_l < sci_l) {
525        leftCutRatio = (double)(sci_l - dst_l) / (double)dst_w;
526        dst_l = sci_l;
527    }
528
529    if(dst_r > sci_r) {
530        rightCutRatio = (double)(dst_r - sci_r) / (double)dst_w;
531        dst_r = sci_r;
532    }
533
534    if(dst_t < sci_t) {
535        topCutRatio = (double)(sci_t - dst_t) / (double)dst_h;
536        dst_t = sci_t;
537    }
538
539    if(dst_b > sci_b) {
540        bottomCutRatio = (double)(dst_b - sci_b) / (double)dst_h;
541        dst_b = sci_b;
542    }
543
544    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
545    crop_l += crop_w * leftCutRatio;
546    crop_t += crop_h * topCutRatio;
547    crop_r -= crop_w * rightCutRatio;
548    crop_b -= crop_h * bottomCutRatio;
549}
550
551void getNonWormholeRegion(hwc_display_contents_1_t* list,
552                              hwc_rect_t& nwr)
553{
554    uint32_t last = list->numHwLayers - 1;
555    hwc_rect_t fbDisplayFrame = list->hwLayers[last].displayFrame;
556    //Initiliaze nwr to first frame
557    nwr.left =  list->hwLayers[0].displayFrame.left;
558    nwr.top =  list->hwLayers[0].displayFrame.top;
559    nwr.right =  list->hwLayers[0].displayFrame.right;
560    nwr.bottom =  list->hwLayers[0].displayFrame.bottom;
561
562    for (uint32_t i = 1; i < last; i++) {
563        hwc_rect_t displayFrame = list->hwLayers[i].displayFrame;
564        nwr.left   = min(nwr.left, displayFrame.left);
565        nwr.top    = min(nwr.top, displayFrame.top);
566        nwr.right  = max(nwr.right, displayFrame.right);
567        nwr.bottom = max(nwr.bottom, displayFrame.bottom);
568    }
569
570    //Intersect with the framebuffer
571    nwr.left   = max(nwr.left, fbDisplayFrame.left);
572    nwr.top    = max(nwr.top, fbDisplayFrame.top);
573    nwr.right  = min(nwr.right, fbDisplayFrame.right);
574    nwr.bottom = min(nwr.bottom, fbDisplayFrame.bottom);
575
576}
577
578bool isSecondaryConfiguring(hwc_context_t* ctx) {
579    return (ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isConfiguring |
580            ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].isConfiguring);
581}
582
583void closeAcquireFds(hwc_display_contents_1_t* list) {
584    if(LIKELY(list)) {
585        for(uint32_t i = 0; i < list->numHwLayers; i++) {
586            //Close the acquireFenceFds
587            //HWC_FRAMEBUFFER are -1 already by SF, rest we close.
588            if(list->hwLayers[i].acquireFenceFd >= 0) {
589                close(list->hwLayers[i].acquireFenceFd);
590                list->hwLayers[i].acquireFenceFd = -1;
591            }
592        }
593    }
594}
595
596int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
597        int fd) {
598    int ret = 0;
599    int acquireFd[MAX_NUM_APP_LAYERS];
600    int count = 0;
601    int releaseFd = -1;
602    int fbFd = -1;
603    bool swapzero = false;
604    int mdpVersion = qdutils::MDPVersion::getInstance().getMDPVersion();
605
606    struct mdp_buf_sync data;
607    memset(&data, 0, sizeof(data));
608    data.acq_fen_fd = acquireFd;
609    data.rel_fen_fd = &releaseFd;
610
611    char property[PROPERTY_VALUE_MAX];
612    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
613        if(atoi(property) == 0)
614            swapzero = true;
615    }
616
617    for(uint32_t i = 0; i < ctx->mLayerRotMap[dpy]->getCount(); i++) {
618        int rotFd = ctx->mRotMgr->getRotDevFd();
619        int rotReleaseFd = -1;
620        struct mdp_buf_sync rotData;
621        memset(&rotData, 0, sizeof(rotData));
622        rotData.acq_fen_fd =
623                &ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd;
624        rotData.rel_fen_fd = &rotReleaseFd; //driver to populate this
625        rotData.session_id = ctx->mLayerRotMap[dpy]->getRot(i)->getSessId();
626        int ret = 0;
627        ret = ioctl(rotFd, MSMFB_BUFFER_SYNC, &rotData);
628        if(ret < 0) {
629            ALOGE("%s: ioctl MSMFB_BUFFER_SYNC failed for rot sync, err=%s",
630                    __FUNCTION__, strerror(errno));
631        } else {
632            close(ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd);
633            //For MDP to wait on.
634            ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd =
635                    dup(rotReleaseFd);
636            //A buffer is free to be used by producer as soon as its copied to
637            //rotator
638            ctx->mLayerRotMap[dpy]->getLayer(i)->releaseFenceFd =
639                    rotReleaseFd;
640        }
641    }
642
643    //Accumulate acquireFenceFds for MDP
644    for(uint32_t i = 0; i < list->numHwLayers; i++) {
645        if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
646                        list->hwLayers[i].acquireFenceFd >= 0) {
647            if(UNLIKELY(swapzero))
648                acquireFd[count++] = -1;
649            else
650                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
651        }
652        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
653            if(UNLIKELY(swapzero))
654                acquireFd[count++] = -1;
655            else if(fd >= 0) {
656                //set the acquireFD from fd - which is coming from c2d
657                acquireFd[count++] = fd;
658                // Buffer sync IOCTL should be async when using c2d fence is
659                // used
660                data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
661            } else if(list->hwLayers[i].acquireFenceFd >= 0)
662                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
663        }
664    }
665
666    data.acq_fen_fd_cnt = count;
667    fbFd = ctx->dpyAttr[dpy].fd;
668
669    //Waits for acquire fences, returns a release fence
670    if(LIKELY(!swapzero)) {
671        uint64_t start = systemTime();
672        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
673        ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
674                            __FUNCTION__, (size_t) ns2ms(systemTime() - start));
675    }
676
677    if(ret < 0) {
678        ALOGE("%s: ioctl MSMFB_BUFFER_SYNC failed, err=%s",
679                  __FUNCTION__, strerror(errno));
680        ALOGE("%s: acq_fen_fd_cnt=%d flags=%d fd=%d dpy=%d numHwLayers=%d",
681              __FUNCTION__, data.acq_fen_fd_cnt, data.flags, fbFd,
682              dpy, list->numHwLayers);
683    }
684
685    for(uint32_t i = 0; i < list->numHwLayers; i++) {
686        if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
687           list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
688            //Populate releaseFenceFds.
689            if(UNLIKELY(swapzero)) {
690                list->hwLayers[i].releaseFenceFd = -1;
691            } else if(list->hwLayers[i].releaseFenceFd < 0) {
692                //If rotator has not already populated this field.
693                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
694            }
695        }
696    }
697
698    if(fd >= 0) {
699        close(fd);
700        fd = -1;
701    }
702
703    if (ctx->mCopyBit[dpy])
704        ctx->mCopyBit[dpy]->setReleaseFd(releaseFd);
705
706    //Signals when MDP finishes reading rotator buffers.
707    ctx->mLayerRotMap[dpy]->setReleaseFd(releaseFd);
708
709    if(UNLIKELY(swapzero)){
710        list->retireFenceFd = -1;
711        close(releaseFd);
712    } else {
713        list->retireFenceFd = releaseFd;
714    }
715
716    return ret;
717}
718
719void trimLayer(hwc_context_t *ctx, const int& dpy, const int& transform,
720        hwc_rect_t& crop, hwc_rect_t& dst) {
721    int hw_w = ctx->dpyAttr[dpy].xres;
722    int hw_h = ctx->dpyAttr[dpy].yres;
723    if(dst.left < 0 || dst.top < 0 ||
724            dst.right > hw_w || dst.bottom > hw_h) {
725        hwc_rect_t scissor = {0, 0, hw_w, hw_h };
726        qhwc::calculate_crop_rects(crop, dst, scissor, transform);
727    }
728}
729
730void setMdpFlags(hwc_layer_1_t *layer,
731        ovutils::eMdpFlags &mdpFlags,
732        int rotDownscale) {
733    private_handle_t *hnd = (private_handle_t *)layer->handle;
734    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
735    const int& transform = layer->transform;
736
737    if(layer->blending == HWC_BLENDING_PREMULT) {
738        ovutils::setMdpFlags(mdpFlags,
739                ovutils::OV_MDP_BLEND_FG_PREMULT);
740    }
741
742    if(isYuvBuffer(hnd)) {
743        if(isSecureBuffer(hnd)) {
744            ovutils::setMdpFlags(mdpFlags,
745                    ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
746        }
747        if(metadata && (metadata->operation & PP_PARAM_INTERLACED) &&
748                metadata->interlaced) {
749            ovutils::setMdpFlags(mdpFlags,
750                    ovutils::OV_MDP_DEINTERLACE);
751        }
752        //Pre-rotation will be used using rotator.
753        if(transform & HWC_TRANSFORM_ROT_90) {
754            ovutils::setMdpFlags(mdpFlags,
755                    ovutils::OV_MDP_SOURCE_ROTATED_90);
756        }
757    }
758
759    //No 90 component and no rot-downscale then flips done by MDP
760    //If we use rot then it might as well do flips
761    if(!(layer->transform & HWC_TRANSFORM_ROT_90) && !rotDownscale) {
762        if(layer->transform & HWC_TRANSFORM_FLIP_H) {
763            ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_FLIP_H);
764        }
765
766        if(layer->transform & HWC_TRANSFORM_FLIP_V) {
767            ovutils::setMdpFlags(mdpFlags,  ovutils::OV_MDP_FLIP_V);
768        }
769    }
770
771    if(metadata &&
772        ((metadata->operation & PP_PARAM_HSIC)
773        || (metadata->operation & PP_PARAM_IGC)
774        || (metadata->operation & PP_PARAM_SHARP2))) {
775        ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_PP_EN);
776    }
777}
778
779int configRotator(Rotator *rot, const Whf& whf,
780        hwc_rect_t& crop, const eMdpFlags& mdpFlags,
781        const eTransform& orient, const int& downscale) {
782    rot->setSource(whf);
783
784    if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
785        qdutils::MDSS_V5) {
786        uint32_t crop_w = (crop.right - crop.left);
787        uint32_t crop_h = (crop.bottom - crop.top);
788        if (ovutils::isYuv(whf.format)) {
789            ovutils::normalizeCrop((uint32_t&)crop.left, crop_w);
790            ovutils::normalizeCrop((uint32_t&)crop.top, crop_h);
791            // For interlaced, crop.h should be 4-aligned
792            if ((mdpFlags & ovutils::OV_MDP_DEINTERLACE) && (crop_h % 4))
793                crop_h = ovutils::aligndown(crop_h, 4);
794            crop.right = crop.left + crop_w;
795            crop.bottom = crop.top + crop_h;
796        }
797        Dim rotCrop(crop.left, crop.top, crop_w, crop_h);
798        rot->setCrop(rotCrop);
799    }
800
801    rot->setFlags(mdpFlags);
802    rot->setTransform(orient);
803    rot->setDownscale(downscale);
804    if(!rot->commit()) return -1;
805    return 0;
806}
807
808int configMdp(Overlay *ov, const PipeArgs& parg,
809        const eTransform& orient, const hwc_rect_t& crop,
810        const hwc_rect_t& pos, const MetaData_t *metadata,
811        const eDest& dest) {
812    ov->setSource(parg, dest);
813    ov->setTransform(orient, dest);
814
815    int crop_w = crop.right - crop.left;
816    int crop_h = crop.bottom - crop.top;
817    Dim dcrop(crop.left, crop.top, crop_w, crop_h);
818    ov->setCrop(dcrop, dest);
819
820    int posW = pos.right - pos.left;
821    int posH = pos.bottom - pos.top;
822    Dim position(pos.left, pos.top, posW, posH);
823    ov->setPosition(position, dest);
824
825    if (metadata)
826        ov->setVisualParams(*metadata, dest);
827
828    if (!ov->commit(dest)) {
829        return -1;
830    }
831    return 0;
832}
833
834void updateSource(eTransform& orient, Whf& whf,
835        hwc_rect_t& crop) {
836    Dim srcCrop(crop.left, crop.top,
837            crop.right - crop.left,
838            crop.bottom - crop.top);
839    orient = static_cast<eTransform>(ovutils::getMdpOrient(orient));
840    preRotateSource(orient, whf, srcCrop);
841    if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
842        qdutils::MDSS_V5) {
843        // Source for overlay will be the cropped (and rotated)
844        crop.left = 0;
845        crop.top = 0;
846        crop.right = srcCrop.w;
847        crop.bottom = srcCrop.h;
848        // Set width & height equal to sourceCrop w & h
849        whf.w = srcCrop.w;
850        whf.h = srcCrop.h;
851    } else {
852        crop.left = srcCrop.x;
853        crop.top = srcCrop.y;
854        crop.right = srcCrop.x + srcCrop.w;
855        crop.bottom = srcCrop.y + srcCrop.h;
856    }
857}
858
859int configureLowRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
860        const int& dpy, eMdpFlags& mdpFlags, const eZorder& z,
861        const eIsFg& isFg, const eDest& dest, Rotator **rot) {
862
863    private_handle_t *hnd = (private_handle_t *)layer->handle;
864    if(!hnd) {
865        ALOGE("%s: layer handle is NULL", __FUNCTION__);
866        ctx->mLayerRotMap[dpy]->reset();
867        return -1;
868    }
869
870    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
871
872    hwc_rect_t crop = integerizeSourceCrop(layer->sourceCropf);
873    hwc_rect_t dst = layer->displayFrame;
874    int transform = layer->transform;
875    eTransform orient = static_cast<eTransform>(transform);
876    int downscale = 0;
877    int rotFlags = ovutils::ROT_FLAGS_NONE;
878    Whf whf(getWidth(hnd), getHeight(hnd),
879            getMdpFormat(hnd->format), hnd->size);
880
881    uint32_t x = dst.left, y  = dst.top;
882    uint32_t w = dst.right - dst.left;
883    uint32_t h = dst.bottom - dst.top;
884
885    if(dpy) {
886        // Calculate the actionsafe dimensions for External(dpy = 1 or 2)
887        getActionSafePosition(ctx, dpy, x, y, w, h);
888        // Convert position to hwc_rect_t
889        dst.left = x;
890        dst.top = y;
891        dst.right = w + dst.left;
892        dst.bottom = h + dst.top;
893    }
894
895    if(isYuvBuffer(hnd) && ctx->mMDP.version >= qdutils::MDP_V4_2 &&
896       ctx->mMDP.version < qdutils::MDSS_V5) {
897        downscale =  getDownscaleFactor(
898            crop.right - crop.left,
899            crop.bottom - crop.top,
900            dst.right - dst.left,
901            dst.bottom - dst.top);
902        if(downscale) {
903            rotFlags = ROT_DOWNSCALE_ENABLED;
904        }
905    }
906
907    setMdpFlags(layer, mdpFlags, downscale);
908    trimLayer(ctx, dpy, transform, crop, dst);
909
910    //Will do something only if feature enabled and conditions suitable
911    //hollow call otherwise
912    if(ctx->mAD->prepare(ctx, crop, whf, hnd)) {
913        overlay::Writeback *wb = overlay::Writeback::getInstance();
914        whf.format = wb->getOutputFormat();
915    }
916
917    if(isYuvBuffer(hnd) && //if 90 component or downscale, use rot
918            ((transform & HWC_TRANSFORM_ROT_90) || downscale)) {
919        *rot = ctx->mRotMgr->getNext();
920        if(*rot == NULL) return -1;
921        BwcPM::setBwc(ctx, crop, dst, transform, mdpFlags);
922        //Configure rotator for pre-rotation
923        if(configRotator(*rot, whf, crop, mdpFlags, orient, downscale) < 0) {
924            ALOGE("%s: configRotator failed!", __FUNCTION__);
925            ctx->mOverlay->clear(dpy);
926            return -1;
927        }
928        ctx->mLayerRotMap[dpy]->add(layer, *rot);
929        whf.format = (*rot)->getDstFormat();
930        updateSource(orient, whf, crop);
931        rotFlags |= ovutils::ROT_PREROTATED;
932    }
933
934    //For the mdp, since either we are pre-rotating or MDP does flips
935    orient = OVERLAY_TRANSFORM_0;
936    transform = 0;
937
938    PipeArgs parg(mdpFlags, whf, z, isFg,
939                  static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
940                  (ovutils::eBlending) getBlending(layer->blending));
941
942    if(configMdp(ctx->mOverlay, parg, orient, crop, dst, metadata, dest) < 0) {
943        ALOGE("%s: commit failed for low res panel", __FUNCTION__);
944        ctx->mLayerRotMap[dpy]->reset();
945        return -1;
946    }
947    return 0;
948}
949
950int configureHighRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
951        const int& dpy, eMdpFlags& mdpFlagsL, const eZorder& z,
952        const eIsFg& isFg, const eDest& lDest, const eDest& rDest,
953        Rotator **rot) {
954    private_handle_t *hnd = (private_handle_t *)layer->handle;
955    if(!hnd) {
956        ALOGE("%s: layer handle is NULL", __FUNCTION__);
957        return -1;
958    }
959
960    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
961
962    int hw_w = ctx->dpyAttr[dpy].xres;
963    int hw_h = ctx->dpyAttr[dpy].yres;
964    hwc_rect_t crop = integerizeSourceCrop(layer->sourceCropf);
965    hwc_rect_t dst = layer->displayFrame;
966    int transform = layer->transform;
967    eTransform orient = static_cast<eTransform>(transform);
968    const int downscale = 0;
969    int rotFlags = ROT_FLAGS_NONE;
970
971    Whf whf(getWidth(hnd), getHeight(hnd),
972            getMdpFormat(hnd->format), hnd->size);
973
974    setMdpFlags(layer, mdpFlagsL, 0);
975    trimLayer(ctx, dpy, transform, crop, dst);
976
977    //Will do something only if feature enabled and conditions suitable
978    //hollow call otherwise
979    if(ctx->mAD->prepare(ctx, crop, whf, hnd)) {
980        overlay::Writeback *wb = overlay::Writeback::getInstance();
981        whf.format = wb->getOutputFormat();
982    }
983
984    if(isYuvBuffer(hnd) && (transform & HWC_TRANSFORM_ROT_90)) {
985        (*rot) = ctx->mRotMgr->getNext();
986        if((*rot) == NULL) return -1;
987        //Configure rotator for pre-rotation
988        if(configRotator(*rot, whf, crop, mdpFlagsL, orient, downscale) < 0) {
989            ALOGE("%s: configRotator failed!", __FUNCTION__);
990            ctx->mOverlay->clear(dpy);
991            return -1;
992        }
993        ctx->mLayerRotMap[dpy]->add(layer, *rot);
994        whf.format = (*rot)->getDstFormat();
995        updateSource(orient, whf, crop);
996        rotFlags |= ROT_PREROTATED;
997    }
998
999    eMdpFlags mdpFlagsR = mdpFlagsL;
1000    setMdpFlags(mdpFlagsR, OV_MDSS_MDP_RIGHT_MIXER);
1001
1002    hwc_rect_t tmp_cropL, tmp_dstL;
1003    hwc_rect_t tmp_cropR, tmp_dstR;
1004
1005    const int lSplit = getLeftSplit(ctx, dpy);
1006
1007    if(lDest != OV_INVALID) {
1008        tmp_cropL = crop;
1009        tmp_dstL = dst;
1010        hwc_rect_t scissor = {0, 0, lSplit, hw_h };
1011        qhwc::calculate_crop_rects(tmp_cropL, tmp_dstL, scissor, 0);
1012    }
1013    if(rDest != OV_INVALID) {
1014        tmp_cropR = crop;
1015        tmp_dstR = dst;
1016        hwc_rect_t scissor = {lSplit, 0, hw_w, hw_h };
1017        qhwc::calculate_crop_rects(tmp_cropR, tmp_dstR, scissor, 0);
1018    }
1019
1020    //When buffer is H-flipped, contents of mixer config also needs to swapped
1021    //Not needed if the layer is confined to one half of the screen.
1022    //If rotator has been used then it has also done the flips, so ignore them.
1023    if((orient & OVERLAY_TRANSFORM_FLIP_H) && lDest != OV_INVALID
1024            && rDest != OV_INVALID && (*rot) == NULL) {
1025        hwc_rect_t new_cropR;
1026        new_cropR.left = tmp_cropL.left;
1027        new_cropR.right = new_cropR.left + (tmp_cropR.right - tmp_cropR.left);
1028
1029        hwc_rect_t new_cropL;
1030        new_cropL.left  = new_cropR.right;
1031        new_cropL.right = tmp_cropR.right;
1032
1033        tmp_cropL.left =  new_cropL.left;
1034        tmp_cropL.right =  new_cropL.right;
1035
1036        tmp_cropR.left = new_cropR.left;
1037        tmp_cropR.right =  new_cropR.right;
1038
1039    }
1040
1041    //For the mdp, since either we are pre-rotating or MDP does flips
1042    orient = OVERLAY_TRANSFORM_0;
1043    transform = 0;
1044
1045    //configure left mixer
1046    if(lDest != OV_INVALID) {
1047        PipeArgs pargL(mdpFlagsL, whf, z, isFg,
1048                       static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
1049                       (ovutils::eBlending) getBlending(layer->blending));
1050
1051        if(configMdp(ctx->mOverlay, pargL, orient,
1052                tmp_cropL, tmp_dstL, metadata, lDest) < 0) {
1053            ALOGE("%s: commit failed for left mixer config", __FUNCTION__);
1054            return -1;
1055        }
1056    }
1057
1058    //configure right mixer
1059    if(rDest != OV_INVALID) {
1060        PipeArgs pargR(mdpFlagsR, whf, z, isFg,
1061                static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
1062                (ovutils::eBlending) getBlending(layer->blending));
1063
1064        tmp_dstR.right = tmp_dstR.right - lSplit;
1065        tmp_dstR.left = tmp_dstR.left - lSplit;
1066        if(configMdp(ctx->mOverlay, pargR, orient,
1067                tmp_cropR, tmp_dstR, metadata, rDest) < 0) {
1068            ALOGE("%s: commit failed for right mixer config", __FUNCTION__);
1069            return -1;
1070        }
1071    }
1072
1073    return 0;
1074}
1075
1076bool canUseRotator(hwc_context_t *ctx) {
1077    if(qdutils::MDPVersion::getInstance().is8x26() &&
1078            ctx->mExtDisplay->isExternalConnected()) {
1079        return false;
1080    }
1081    if(ctx->mMDP.version == qdutils::MDP_V3_0_4)
1082        return false;
1083    return true;
1084}
1085
1086int getLeftSplit(hwc_context_t *ctx, const int& dpy) {
1087    //Default even split for all displays with high res
1088    int lSplit = ctx->dpyAttr[dpy].xres / 2;
1089    if(dpy == HWC_DISPLAY_PRIMARY &&
1090            qdutils::MDPVersion::getInstance().getLeftSplit()) {
1091        //Override if split published by driver for primary
1092        lSplit = qdutils::MDPVersion::getInstance().getLeftSplit();
1093    }
1094    return lSplit;
1095}
1096
1097void setupSecondaryObjs(hwc_context_t *ctx, const int& dpy) {
1098    const int rSplit = 0;
1099    ctx->mFBUpdate[dpy] =
1100            IFBUpdate::getObject(ctx->dpyAttr[dpy].xres, rSplit, dpy);
1101    ctx->mMDPComp[dpy] =  MDPComp::getObject(
1102            ctx->dpyAttr[dpy].xres, rSplit, dpy);
1103
1104    int compositionType =
1105            qdutils::QCCompositionType::getInstance().getCompositionType();
1106    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
1107                           qdutils::COMPOSITION_TYPE_MDP |
1108                           qdutils::COMPOSITION_TYPE_C2D)) {
1109        ctx->mCopyBit[dpy] = new CopyBit();
1110    }
1111}
1112
1113void clearSecondaryObjs(hwc_context_t *ctx, const int& dpy) {
1114    if(ctx->mFBUpdate[dpy]) {
1115        delete ctx->mFBUpdate[dpy];
1116        ctx->mFBUpdate[dpy] = NULL;
1117    }
1118    if(ctx->mCopyBit[dpy]){
1119        delete ctx->mCopyBit[dpy];
1120        ctx->mCopyBit[dpy] = NULL;
1121    }
1122    if(ctx->mMDPComp[dpy]) {
1123        delete ctx->mMDPComp[dpy];
1124        ctx->mMDPComp[dpy] = NULL;
1125    }
1126}
1127
1128void BwcPM::setBwc(hwc_context_t *ctx, const hwc_rect_t& crop,
1129            const hwc_rect_t& dst, const int& transform,
1130            ovutils::eMdpFlags& mdpFlags) {
1131    //Target doesnt support Bwc
1132    if(!qdutils::MDPVersion::getInstance().supportsBWC()) {
1133        return;
1134    }
1135    //src width > MAX mixer supported dim
1136    if((crop.right - crop.left) > qdutils::MAX_DISPLAY_DIM) {
1137        return;
1138    }
1139    //External connected
1140    if(ctx->mExtDisplay->isExternalConnected()) {
1141        return;
1142    }
1143    //Decimation necessary, cannot use BWC. H/W requirement.
1144    if(qdutils::MDPVersion::getInstance().supportsDecimation()) {
1145        int src_w = crop.right - crop.left;
1146        int src_h = crop.bottom - crop.top;
1147        int dst_w = dst.right - dst.left;
1148        int dst_h = dst.bottom - dst.top;
1149        if(transform & HAL_TRANSFORM_ROT_90) {
1150            swap(src_w, src_h);
1151        }
1152        float horDscale = 0.0f;
1153        float verDscale = 0.0f;
1154        int horzDeci = 0;
1155        int vertDeci = 0;
1156        ovutils::getDecimationFactor(src_w, src_h, dst_w, dst_h, horDscale,
1157                verDscale);
1158        //TODO Use log2f once math.h has it
1159        if((int)horDscale)
1160            horzDeci = (int)(log(horDscale) / log(2));
1161        if((int)verDscale)
1162            vertDeci = (int)(log(verDscale) / log(2));
1163        if(horzDeci || vertDeci) return;
1164    }
1165    //Property
1166    char value[PROPERTY_VALUE_MAX];
1167    property_get("debug.disable.bwc", value, "0");
1168     if(atoi(value)) return;
1169
1170    ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDSS_MDP_BWC_EN);
1171}
1172
1173void LayerRotMap::add(hwc_layer_1_t* layer, Rotator *rot) {
1174    if(mCount >= MAX_SESS) return;
1175    mLayer[mCount] = layer;
1176    mRot[mCount] = rot;
1177    mCount++;
1178}
1179
1180void LayerRotMap::reset() {
1181    for (int i = 0; i < MAX_SESS; i++) {
1182        mLayer[i] = 0;
1183        mRot[i] = 0;
1184    }
1185    mCount = 0;
1186}
1187
1188void LayerRotMap::setReleaseFd(const int& fence) {
1189    for(uint32_t i = 0; i < mCount; i++) {
1190        mRot[i]->setReleaseFd(dup(fence));
1191    }
1192}
1193
1194};//namespace qhwc
1195