hwc_utils.cpp revision 63d668829904b49e30e2e3e53defbfda70ab23b7
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 ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL)
21#define HWC_UTILS_DEBUG 0
22#include <math.h>
23#include <sys/ioctl.h>
24#include <binder/IServiceManager.h>
25#include <EGL/egl.h>
26#include <cutils/properties.h>
27#include <utils/Trace.h>
28#include <gralloc_priv.h>
29#include <overlay.h>
30#include <overlayRotator.h>
31#include <overlayWriteback.h>
32#include "hwc_utils.h"
33#include "hwc_mdpcomp.h"
34#include "hwc_fbupdate.h"
35#include "hwc_ad.h"
36#include "mdp_version.h"
37#include "hwc_copybit.h"
38#include "external.h"
39#include "hwc_qclient.h"
40#include "QService.h"
41#include "comptype.h"
42
43using namespace qClient;
44using namespace qService;
45using namespace android;
46using namespace overlay;
47using namespace overlay::utils;
48namespace ovutils = overlay::utils;
49
50namespace qhwc {
51
52static int openFramebufferDevice(hwc_context_t *ctx)
53{
54    struct fb_fix_screeninfo finfo;
55    struct fb_var_screeninfo info;
56
57    int fb_fd = openFb(HWC_DISPLAY_PRIMARY);
58    if(fb_fd < 0) {
59        ALOGE("%s: Error Opening FB : %s", __FUNCTION__, strerror(errno));
60        return -errno;
61    }
62
63    if (ioctl(fb_fd, FBIOGET_VSCREENINFO, &info) == -1) {
64        ALOGE("%s:Error in ioctl FBIOGET_VSCREENINFO: %s", __FUNCTION__,
65                                                       strerror(errno));
66        close(fb_fd);
67        return -errno;
68    }
69
70    if (int(info.width) <= 0 || int(info.height) <= 0) {
71        // the driver doesn't return that information
72        // default to 160 dpi
73        info.width  = ((info.xres * 25.4f)/160.0f + 0.5f);
74        info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
75    }
76
77    float xdpi = (info.xres * 25.4f) / info.width;
78    float ydpi = (info.yres * 25.4f) / info.height;
79
80#ifdef MSMFB_METADATA_GET
81    struct msmfb_metadata metadata;
82    memset(&metadata, 0 , sizeof(metadata));
83    metadata.op = metadata_op_frame_rate;
84
85    if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) {
86        ALOGE("%s:Error retrieving panel frame rate: %s", __FUNCTION__,
87                                                      strerror(errno));
88        close(fb_fd);
89        return -errno;
90    }
91
92    float fps  = metadata.data.panel_frame_rate;
93#else
94    //XXX: Remove reserved field usage on all baselines
95    //The reserved[3] field is used to store FPS by the driver.
96    float fps  = info.reserved[3] & 0xFF;
97#endif
98
99    if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
100        ALOGE("%s:Error in ioctl FBIOGET_FSCREENINFO: %s", __FUNCTION__,
101                                                       strerror(errno));
102        close(fb_fd);
103        return -errno;
104    }
105
106    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = fb_fd;
107    //xres, yres may not be 32 aligned
108    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = finfo.line_length /(info.xres/8);
109    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = info.xres;
110    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = info.yres;
111    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = xdpi;
112    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ydpi;
113    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period = 1000000000l / fps;
114
115    //Unblank primary on first boot
116    if(ioctl(fb_fd, FBIOBLANK,FB_BLANK_UNBLANK) < 0) {
117        ALOGE("%s: Failed to unblank display", __FUNCTION__);
118        return -errno;
119    }
120    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].isActive = true;
121
122    return 0;
123}
124
125void initContext(hwc_context_t *ctx)
126{
127    memset(&ctx->dpyAttr, 0, sizeof(ctx->dpyAttr));
128    if(openFramebufferDevice(ctx) < 0) {
129        ALOGE("%s: failed to open framebuffer!!", __FUNCTION__);
130    }
131
132    overlay::Overlay::initOverlay();
133    ctx->mOverlay = overlay::Overlay::getInstance();
134    ctx->mRotMgr = new RotMgr();
135    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
136    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
137    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
138    const int rightSplit = qdutils::MDPVersion::getInstance().getRightSplit();
139    overlay::Overlay::initOverlay();
140    ctx->mOverlay = overlay::Overlay::getInstance();
141    ctx->mRotMgr = new RotMgr();
142
143    //Is created and destroyed only once for primary
144    //For external it could get created and destroyed multiple times depending
145    //on what external we connect to.
146    ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
147        IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
148                rightSplit, HWC_DISPLAY_PRIMARY);
149
150    // Check if the target supports copybit compostion (dyn/mdp/c2d) to
151    // decide if we need to open the copybit module.
152    int compositionType =
153        qdutils::QCCompositionType::getInstance().getCompositionType();
154
155    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
156                           qdutils::COMPOSITION_TYPE_MDP |
157                           qdutils::COMPOSITION_TYPE_C2D)) {
158            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
159    }
160
161    ctx->mExtDisplay = new ExternalDisplay(ctx);
162
163    for (uint32_t i = 0; i < MAX_DISPLAYS; i++) {
164        ctx->mLayerRotMap[i] = new LayerRotMap();
165    }
166
167    ctx->mMDPComp[HWC_DISPLAY_PRIMARY] =
168         MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
169                rightSplit, HWC_DISPLAY_PRIMARY);
170
171    MDPComp::init(ctx);
172    ctx->mAD = new AssertiveDisplay();
173
174    ctx->vstate.enable = false;
175    ctx->vstate.fakevsync = false;
176
177    //Right now hwc starts the service but anybody could do it, or it could be
178    //independent process as well.
179    QService::init();
180    sp<IQClient> client = new QClient(ctx);
181    interface_cast<IQService>(
182            defaultServiceManager()->getService(
183            String16("display.qservice")))->connect(client);
184
185    ALOGI("Initializing Qualcomm Hardware Composer");
186    ALOGI("MDP version: %d", ctx->mMDP.version);
187}
188
189void closeContext(hwc_context_t *ctx)
190{
191    if(ctx->mOverlay) {
192        delete ctx->mOverlay;
193        ctx->mOverlay = NULL;
194    }
195
196    if(ctx->mRotMgr) {
197        delete ctx->mRotMgr;
198        ctx->mRotMgr = NULL;
199    }
200
201    for(int i = 0; i < MAX_DISPLAYS; i++) {
202        if(ctx->mCopyBit[i]) {
203            delete ctx->mCopyBit[i];
204            ctx->mCopyBit[i] = NULL;
205        }
206    }
207
208    if(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd) {
209        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
210        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
211    }
212
213    if(ctx->mExtDisplay) {
214        delete ctx->mExtDisplay;
215        ctx->mExtDisplay = NULL;
216    }
217
218    for(int i = 0; i < MAX_DISPLAYS; i++) {
219        if(ctx->mFBUpdate[i]) {
220            delete ctx->mFBUpdate[i];
221            ctx->mFBUpdate[i] = NULL;
222        }
223        if(ctx->mMDPComp[i]) {
224            delete ctx->mMDPComp[i];
225            ctx->mMDPComp[i] = NULL;
226        }
227        if(ctx->mLayerRotMap[i]) {
228            delete ctx->mLayerRotMap[i];
229            ctx->mLayerRotMap[i] = NULL;
230        }
231    }
232
233    if(ctx->mAD) {
234        delete ctx->mAD;
235        ctx->mAD = NULL;
236    }
237}
238
239
240void dumpsys_log(android::String8& buf, const char* fmt, ...)
241{
242    va_list varargs;
243    va_start(varargs, fmt);
244    buf.appendFormatV(fmt, varargs);
245    va_end(varargs);
246}
247
248/* Calculates the destination position based on the action safe rectangle */
249void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x,
250                           uint32_t& y, uint32_t& w, uint32_t& h) {
251
252    // if external supports underscan, do nothing
253    // it will be taken care in the driver
254    if(ctx->mExtDisplay->isCEUnderscanSupported())
255        return;
256
257    char value[PROPERTY_VALUE_MAX];
258    // Read action safe properties
259    property_get("persist.sys.actionsafe.width", value, "0");
260    int asWidthRatio = atoi(value);
261    property_get("persist.sys.actionsafe.height", value, "0");
262    int asHeightRatio = atoi(value);
263
264    if(!asWidthRatio && !asHeightRatio) {
265        //No action safe ratio set, return
266        return;
267    }
268
269    float wRatio = 1.0;
270    float hRatio = 1.0;
271    float xRatio = 1.0;
272    float yRatio = 1.0;
273
274    float fbWidth = ctx->dpyAttr[dpy].xres;
275    float fbHeight = ctx->dpyAttr[dpy].yres;
276
277    float asX = 0;
278    float asY = 0;
279    float asW = fbWidth;
280    float asH= fbHeight;
281
282    // based on the action safe ratio, get the Action safe rectangle
283    asW = fbWidth * (1.0f -  asWidthRatio / 100.0f);
284    asH = fbHeight * (1.0f -  asHeightRatio / 100.0f);
285    asX = (fbWidth - asW) / 2;
286    asY = (fbHeight - asH) / 2;
287
288    // calculate the position ratio
289    xRatio = (float)x/fbWidth;
290    yRatio = (float)y/fbHeight;
291    wRatio = (float)w/fbWidth;
292    hRatio = (float)h/fbHeight;
293
294    //Calculate the position...
295    x = (xRatio * asW) + asX;
296    y = (yRatio * asH) + asY;
297    w = (wRatio * asW);
298    h = (hRatio * asH);
299
300    return;
301}
302
303bool needsScaling(hwc_context_t* ctx, hwc_layer_1_t const* layer,
304        const int& dpy) {
305    int dst_w, dst_h, src_w, src_h;
306
307    hwc_rect_t displayFrame  = layer->displayFrame;
308    hwc_rect_t sourceCrop = integerizeSourceCrop(layer->sourceCropf);
309    trimLayer(ctx, dpy, layer->transform, sourceCrop, displayFrame);
310
311    dst_w = displayFrame.right - displayFrame.left;
312    dst_h = displayFrame.bottom - displayFrame.top;
313    src_w = sourceCrop.right - sourceCrop.left;
314    src_h = sourceCrop.bottom - sourceCrop.top;
315
316    if(((src_w != dst_w) || (src_h != dst_h)))
317        return true;
318
319    return false;
320}
321
322bool isAlphaScaled(hwc_context_t* ctx, hwc_layer_1_t const* layer,
323        const int& dpy) {
324    if(needsScaling(ctx, layer, dpy) && isAlphaPresent(layer)) {
325        return true;
326    }
327    return false;
328}
329
330bool isAlphaPresent(hwc_layer_1_t const* layer) {
331    private_handle_t *hnd = (private_handle_t *)layer->handle;
332    if(hnd) {
333        int format = hnd->format;
334        switch(format) {
335        case HAL_PIXEL_FORMAT_RGBA_8888:
336        case HAL_PIXEL_FORMAT_BGRA_8888:
337            // In any more formats with Alpha go here..
338            return true;
339        default : return false;
340        }
341    }
342    return false;
343}
344
345// Let CABL know we have a YUV layer
346static void setYUVProp(int yuvCount) {
347    static char property[PROPERTY_VALUE_MAX];
348    if(yuvCount > 0) {
349        if (property_get("hw.cabl.yuv", property, NULL) > 0) {
350            if (atoi(property) != 1) {
351                property_set("hw.cabl.yuv", "1");
352            }
353        }
354    } else {
355        if (property_get("hw.cabl.yuv", property, NULL) > 0) {
356            if (atoi(property) != 0) {
357                property_set("hw.cabl.yuv", "0");
358            }
359        }
360    }
361}
362
363void setListStats(hwc_context_t *ctx,
364        const hwc_display_contents_1_t *list, int dpy) {
365    const int prevYuvCount = ctx->listStats[dpy].yuvCount;
366    memset(&ctx->listStats[dpy], 0, sizeof(ListStats));
367    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
368    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
369    ctx->listStats[dpy].skipCount = 0;
370    ctx->listStats[dpy].needsAlphaScale = false;
371    ctx->listStats[dpy].preMultipliedAlpha = false;
372    ctx->listStats[dpy].planeAlpha = false;
373    ctx->listStats[dpy].yuvCount = 0;
374
375    for (size_t i = 0; i < (size_t)ctx->listStats[dpy].numAppLayers; i++) {
376        hwc_layer_1_t const* layer = &list->hwLayers[i];
377        private_handle_t *hnd = (private_handle_t *)layer->handle;
378
379        // continue if number of app layers exceeds MAX_NUM_APP_LAYERS
380        if(ctx->listStats[dpy].numAppLayers > MAX_NUM_APP_LAYERS)
381            continue;
382
383        //reset yuv indices
384        ctx->listStats[dpy].yuvIndices[i] = -1;
385
386        if (isSkipLayer(&list->hwLayers[i])) {
387            ctx->listStats[dpy].skipCount++;
388        } else if (UNLIKELY(isYuvBuffer(hnd))) {
389            int& yuvCount = ctx->listStats[dpy].yuvCount;
390            ctx->listStats[dpy].yuvIndices[yuvCount] = i;
391            yuvCount++;
392
393            if((layer->transform & HWC_TRANSFORM_ROT_90) &&
394                    canUseRotator(ctx)) {
395                if(ctx->mOverlay->isPipeTypeAttached(OV_MDP_PIPE_DMA)) {
396                    ctx->isPaddingRound = true;
397                }
398                Overlay::setDMAMode(Overlay::DMA_BLOCK_MODE);
399            }
400        }
401        if(layer->blending == HWC_BLENDING_PREMULT)
402            ctx->listStats[dpy].preMultipliedAlpha = true;
403        if(layer->planeAlpha < 0xFF)
404            ctx->listStats[dpy].planeAlpha = true;
405        if(!ctx->listStats[dpy].needsAlphaScale)
406            ctx->listStats[dpy].needsAlphaScale =
407                    isAlphaScaled(ctx, layer, dpy);
408    }
409    setYUVProp(ctx->listStats[dpy].yuvCount);
410    //The marking of video begin/end is useful on some targets where we need
411    //to have a padding round to be able to shift pipes across mixers.
412    if(prevYuvCount != ctx->listStats[dpy].yuvCount) {
413        ctx->mVideoTransFlag = true;
414    }
415    if(dpy == HWC_DISPLAY_PRIMARY) {
416        ctx->mAD->markDoable(ctx, list);
417    }
418}
419
420
421static void calc_cut(double& leftCutRatio, double& topCutRatio,
422        double& rightCutRatio, double& bottomCutRatio, int orient) {
423    if(orient & HAL_TRANSFORM_FLIP_H) {
424        swap(leftCutRatio, rightCutRatio);
425    }
426    if(orient & HAL_TRANSFORM_FLIP_V) {
427        swap(topCutRatio, bottomCutRatio);
428    }
429    if(orient & HAL_TRANSFORM_ROT_90) {
430        //Anti clock swapping
431        double tmpCutRatio = leftCutRatio;
432        leftCutRatio = topCutRatio;
433        topCutRatio = rightCutRatio;
434        rightCutRatio = bottomCutRatio;
435        bottomCutRatio = tmpCutRatio;
436    }
437}
438
439bool isSecuring(hwc_context_t* ctx, hwc_layer_1_t const* layer) {
440    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
441       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
442        ctx->mSecuring) {
443        return true;
444    }
445    //  On A-Family, Secure policy is applied system wide and not on
446    //  buffers.
447    if (isSecureModePolicy(ctx->mMDP.version)) {
448        private_handle_t *hnd = (private_handle_t *)layer->handle;
449        if(ctx->mSecureMode) {
450            if (! isSecureBuffer(hnd)) {
451                // This code path executes for the following usecase:
452                // Some Apps in which first few seconds, framework
453                // sends non-secure buffer and with out destroying
454                // surfaces, switches to secure buffer thereby exposing
455                // vulnerability on A-family devices. Catch this situation
456                // and handle it gracefully by allowing it to be composed by
457                // GPU.
458                ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle non-secure video layer"
459                         "during secure playback gracefully", __FUNCTION__);
460                return true;
461            }
462        } else {
463            if (isSecureBuffer(hnd)) {
464                // This code path executes for the following usecase:
465                // For some Apps, when User terminates playback, Framework
466                // doesnt destroy video surface and video surface still
467                // comes to Display HAL. This exposes vulnerability on
468                // A-family. Catch this situation and handle it gracefully
469                // by allowing it to be composed by GPU.
470                ALOGD_IF(HWC_UTILS_DEBUG, "%s: Handle secure video layer"
471                         "during non-secure playback gracefully", __FUNCTION__);
472                return true;
473            }
474        }
475    }
476    return false;
477}
478
479bool isSecureModePolicy(int mdpVersion) {
480    if (mdpVersion < qdutils::MDSS_V5)
481        return true;
482    else
483        return false;
484}
485
486int getBlending(int blending) {
487    switch(blending) {
488    case HWC_BLENDING_NONE:
489        return overlay::utils::OVERLAY_BLENDING_OPAQUE;
490    case HWC_BLENDING_PREMULT:
491        return overlay::utils::OVERLAY_BLENDING_PREMULT;
492    case HWC_BLENDING_COVERAGE :
493    default:
494        return overlay::utils::OVERLAY_BLENDING_COVERAGE;
495    }
496}
497
498//Crops source buffer against destination and FB boundaries
499void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
500                          const hwc_rect_t& scissor, int orient) {
501
502    int& crop_l = crop.left;
503    int& crop_t = crop.top;
504    int& crop_r = crop.right;
505    int& crop_b = crop.bottom;
506    int crop_w = crop.right - crop.left;
507    int crop_h = crop.bottom - crop.top;
508
509    int& dst_l = dst.left;
510    int& dst_t = dst.top;
511    int& dst_r = dst.right;
512    int& dst_b = dst.bottom;
513    int dst_w = abs(dst.right - dst.left);
514    int dst_h = abs(dst.bottom - dst.top);
515
516    const int& sci_l = scissor.left;
517    const int& sci_t = scissor.top;
518    const int& sci_r = scissor.right;
519    const int& sci_b = scissor.bottom;
520    int sci_w = abs(sci_r - sci_l);
521    int sci_h = abs(sci_b - sci_t);
522
523    double leftCutRatio = 0.0, rightCutRatio = 0.0, topCutRatio = 0.0,
524            bottomCutRatio = 0.0;
525
526    if(dst_l < sci_l) {
527        leftCutRatio = (double)(sci_l - dst_l) / (double)dst_w;
528        dst_l = sci_l;
529    }
530
531    if(dst_r > sci_r) {
532        rightCutRatio = (double)(dst_r - sci_r) / (double)dst_w;
533        dst_r = sci_r;
534    }
535
536    if(dst_t < sci_t) {
537        topCutRatio = (double)(sci_t - dst_t) / (double)dst_h;
538        dst_t = sci_t;
539    }
540
541    if(dst_b > sci_b) {
542        bottomCutRatio = (double)(dst_b - sci_b) / (double)dst_h;
543        dst_b = sci_b;
544    }
545
546    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
547    crop_l += crop_w * leftCutRatio;
548    crop_t += crop_h * topCutRatio;
549    crop_r -= crop_w * rightCutRatio;
550    crop_b -= crop_h * bottomCutRatio;
551}
552
553void getNonWormholeRegion(hwc_display_contents_1_t* list,
554                              hwc_rect_t& nwr)
555{
556    uint32_t last = list->numHwLayers - 1;
557    hwc_rect_t fbDisplayFrame = list->hwLayers[last].displayFrame;
558    //Initiliaze nwr to first frame
559    nwr.left =  list->hwLayers[0].displayFrame.left;
560    nwr.top =  list->hwLayers[0].displayFrame.top;
561    nwr.right =  list->hwLayers[0].displayFrame.right;
562    nwr.bottom =  list->hwLayers[0].displayFrame.bottom;
563
564    for (uint32_t i = 1; i < last; i++) {
565        hwc_rect_t displayFrame = list->hwLayers[i].displayFrame;
566        nwr.left   = min(nwr.left, displayFrame.left);
567        nwr.top    = min(nwr.top, displayFrame.top);
568        nwr.right  = max(nwr.right, displayFrame.right);
569        nwr.bottom = max(nwr.bottom, displayFrame.bottom);
570    }
571
572    //Intersect with the framebuffer
573    nwr.left   = max(nwr.left, fbDisplayFrame.left);
574    nwr.top    = max(nwr.top, fbDisplayFrame.top);
575    nwr.right  = min(nwr.right, fbDisplayFrame.right);
576    nwr.bottom = min(nwr.bottom, fbDisplayFrame.bottom);
577
578}
579
580bool isSecondaryConfiguring(hwc_context_t* ctx) {
581    return (ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isConfiguring |
582            ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].isConfiguring);
583}
584
585void closeAcquireFds(hwc_display_contents_1_t* list) {
586    if(LIKELY(list)) {
587        for(uint32_t i = 0; i < list->numHwLayers; i++) {
588            //Close the acquireFenceFds
589            //HWC_FRAMEBUFFER are -1 already by SF, rest we close.
590            if(list->hwLayers[i].acquireFenceFd >= 0) {
591                close(list->hwLayers[i].acquireFenceFd);
592                list->hwLayers[i].acquireFenceFd = -1;
593            }
594        }
595    }
596}
597
598int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
599        int fd) {
600    ATRACE_CALL();
601    int ret = 0;
602    int acquireFd[MAX_NUM_APP_LAYERS];
603    int count = 0;
604    int releaseFd = -1;
605    int retireFd = -1;
606    int fbFd = -1;
607    bool swapzero = false;
608    int mdpVersion = qdutils::MDPVersion::getInstance().getMDPVersion();
609
610    struct mdp_buf_sync data;
611    memset(&data, 0, sizeof(data));
612    data.acq_fen_fd = acquireFd;
613    data.rel_fen_fd = &releaseFd;
614    data.retire_fen_fd = &retireFd;
615
616    char property[PROPERTY_VALUE_MAX];
617    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
618        if(atoi(property) == 0)
619            swapzero = true;
620    }
621
622    for(uint32_t i = 0; i < ctx->mLayerRotMap[dpy]->getCount(); i++) {
623        int rotFd = ctx->mRotMgr->getRotDevFd();
624        int rotReleaseFd = -1;
625        int rotRetireFd = -1;
626        struct mdp_buf_sync rotData;
627        memset(&rotData, 0, sizeof(rotData));
628        rotData.acq_fen_fd =
629                &ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd;
630        rotData.rel_fen_fd = &rotReleaseFd; //driver to populate this
631        rotData.retire_fen_fd = &rotRetireFd;
632        rotData.session_id = ctx->mLayerRotMap[dpy]->getRot(i)->getSessId();
633        int ret = 0;
634        ret = ioctl(rotFd, MSMFB_BUFFER_SYNC, &rotData);
635        if(ret < 0) {
636            ALOGE("%s: ioctl MSMFB_BUFFER_SYNC failed for rot sync, err=%s",
637                    __FUNCTION__, strerror(errno));
638        } else {
639            close(ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd);
640            //For MDP to wait on.
641            ctx->mLayerRotMap[dpy]->getLayer(i)->acquireFenceFd =
642                    dup(rotReleaseFd);
643            //A buffer is free to be used by producer as soon as its copied to
644            //rotator
645            ctx->mLayerRotMap[dpy]->getLayer(i)->releaseFenceFd =
646                    rotReleaseFd;
647            //Not used for rotator
648            close(rotRetireFd);
649        }
650    }
651
652    //Accumulate acquireFenceFds for MDP
653    for(uint32_t i = 0; i < list->numHwLayers; i++) {
654        if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
655                        list->hwLayers[i].acquireFenceFd >= 0) {
656            if(UNLIKELY(swapzero))
657                acquireFd[count++] = -1;
658            else
659                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
660        }
661        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
662            if(UNLIKELY(swapzero))
663                acquireFd[count++] = -1;
664            else if(fd >= 0) {
665                //set the acquireFD from fd - which is coming from c2d
666                acquireFd[count++] = fd;
667                // Buffer sync IOCTL should be async when using c2d fence is
668                // used
669                data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
670            } else if(list->hwLayers[i].acquireFenceFd >= 0)
671                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
672        }
673    }
674
675    data.acq_fen_fd_cnt = count;
676    fbFd = ctx->dpyAttr[dpy].fd;
677
678    //Waits for acquire fences, returns a release fence
679    if(LIKELY(!swapzero)) {
680        uint64_t start = systemTime();
681        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
682        ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
683                            __FUNCTION__, (size_t) ns2ms(systemTime() - start));
684    }
685
686    if(ret < 0) {
687        ALOGE("%s: ioctl MSMFB_BUFFER_SYNC failed, err=%s",
688                  __FUNCTION__, strerror(errno));
689        ALOGE("%s: acq_fen_fd_cnt=%d flags=%d fd=%d dpy=%d numHwLayers=%d",
690              __FUNCTION__, data.acq_fen_fd_cnt, data.flags, fbFd,
691              dpy, list->numHwLayers);
692    }
693
694    for(uint32_t i = 0; i < list->numHwLayers; i++) {
695        if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
696           list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
697            //Populate releaseFenceFds.
698            if(UNLIKELY(swapzero)) {
699                list->hwLayers[i].releaseFenceFd = -1;
700            } else if(list->hwLayers[i].releaseFenceFd < 0) {
701                //If rotator has not already populated this field.
702                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
703            }
704        }
705    }
706
707    if(fd >= 0) {
708        close(fd);
709        fd = -1;
710    }
711
712    if (ctx->mCopyBit[dpy])
713        ctx->mCopyBit[dpy]->setReleaseFd(releaseFd);
714
715    //Signals when MDP finishes reading rotator buffers.
716    ctx->mLayerRotMap[dpy]->setReleaseFd(releaseFd);
717    close(releaseFd);
718
719    if(UNLIKELY(swapzero))
720        list->retireFenceFd = -1;
721    else
722        list->retireFenceFd = retireFd;
723    return ret;
724}
725
726void trimLayer(hwc_context_t *ctx, const int& dpy, const int& transform,
727        hwc_rect_t& crop, hwc_rect_t& dst) {
728    int hw_w = ctx->dpyAttr[dpy].xres;
729    int hw_h = ctx->dpyAttr[dpy].yres;
730    if(dst.left < 0 || dst.top < 0 ||
731            dst.right > hw_w || dst.bottom > hw_h) {
732        hwc_rect_t scissor = {0, 0, hw_w, hw_h };
733        qhwc::calculate_crop_rects(crop, dst, scissor, transform);
734    }
735}
736
737void setMdpFlags(hwc_layer_1_t *layer,
738        ovutils::eMdpFlags &mdpFlags,
739        int rotDownscale) {
740    private_handle_t *hnd = (private_handle_t *)layer->handle;
741    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
742    const int& transform = layer->transform;
743
744    if(layer->blending == HWC_BLENDING_PREMULT) {
745        ovutils::setMdpFlags(mdpFlags,
746                ovutils::OV_MDP_BLEND_FG_PREMULT);
747    }
748
749    if(isYuvBuffer(hnd)) {
750        if(isSecureBuffer(hnd)) {
751            ovutils::setMdpFlags(mdpFlags,
752                    ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
753        }
754        if(metadata && (metadata->operation & PP_PARAM_INTERLACED) &&
755                metadata->interlaced) {
756            ovutils::setMdpFlags(mdpFlags,
757                    ovutils::OV_MDP_DEINTERLACE);
758        }
759        //Pre-rotation will be used using rotator.
760        if(transform & HWC_TRANSFORM_ROT_90) {
761            ovutils::setMdpFlags(mdpFlags,
762                    ovutils::OV_MDP_SOURCE_ROTATED_90);
763        }
764    }
765
766    //No 90 component and no rot-downscale then flips done by MDP
767    //If we use rot then it might as well do flips
768    if(!(layer->transform & HWC_TRANSFORM_ROT_90) && !rotDownscale) {
769        if(layer->transform & HWC_TRANSFORM_FLIP_H) {
770            ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_FLIP_H);
771        }
772
773        if(layer->transform & HWC_TRANSFORM_FLIP_V) {
774            ovutils::setMdpFlags(mdpFlags,  ovutils::OV_MDP_FLIP_V);
775        }
776    }
777
778    if(metadata &&
779        ((metadata->operation & PP_PARAM_HSIC)
780        || (metadata->operation & PP_PARAM_IGC)
781        || (metadata->operation & PP_PARAM_SHARP2))) {
782        ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_PP_EN);
783    }
784}
785
786int configRotator(Rotator *rot, const Whf& whf,
787        hwc_rect_t& crop, const eMdpFlags& mdpFlags,
788        const eTransform& orient, const int& downscale) {
789    rot->setSource(whf);
790
791    if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
792        qdutils::MDSS_V5) {
793        uint32_t crop_w = (crop.right - crop.left);
794        uint32_t crop_h = (crop.bottom - crop.top);
795        if (ovutils::isYuv(whf.format)) {
796            ovutils::normalizeCrop((uint32_t&)crop.left, crop_w);
797            ovutils::normalizeCrop((uint32_t&)crop.top, crop_h);
798            // For interlaced, crop.h should be 4-aligned
799            if ((mdpFlags & ovutils::OV_MDP_DEINTERLACE) && (crop_h % 4))
800                crop_h = ovutils::aligndown(crop_h, 4);
801            crop.right = crop.left + crop_w;
802            crop.bottom = crop.top + crop_h;
803        }
804        Dim rotCrop(crop.left, crop.top, crop_w, crop_h);
805        rot->setCrop(rotCrop);
806    }
807
808    rot->setFlags(mdpFlags);
809    rot->setTransform(orient);
810    rot->setDownscale(downscale);
811    if(!rot->commit()) return -1;
812    return 0;
813}
814
815int configMdp(Overlay *ov, const PipeArgs& parg,
816        const eTransform& orient, const hwc_rect_t& crop,
817        const hwc_rect_t& pos, const MetaData_t *metadata,
818        const eDest& dest) {
819    ov->setSource(parg, dest);
820    ov->setTransform(orient, dest);
821
822    int crop_w = crop.right - crop.left;
823    int crop_h = crop.bottom - crop.top;
824    Dim dcrop(crop.left, crop.top, crop_w, crop_h);
825    ov->setCrop(dcrop, dest);
826
827    int posW = pos.right - pos.left;
828    int posH = pos.bottom - pos.top;
829    Dim position(pos.left, pos.top, posW, posH);
830    ov->setPosition(position, dest);
831
832    if (metadata)
833        ov->setVisualParams(*metadata, dest);
834
835    if (!ov->commit(dest)) {
836        return -1;
837    }
838    return 0;
839}
840
841void updateSource(eTransform& orient, Whf& whf,
842        hwc_rect_t& crop) {
843    Dim srcCrop(crop.left, crop.top,
844            crop.right - crop.left,
845            crop.bottom - crop.top);
846    orient = static_cast<eTransform>(ovutils::getMdpOrient(orient));
847    preRotateSource(orient, whf, srcCrop);
848    if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
849        qdutils::MDSS_V5) {
850        // Source for overlay will be the cropped (and rotated)
851        crop.left = 0;
852        crop.top = 0;
853        crop.right = srcCrop.w;
854        crop.bottom = srcCrop.h;
855        // Set width & height equal to sourceCrop w & h
856        whf.w = srcCrop.w;
857        whf.h = srcCrop.h;
858    } else {
859        crop.left = srcCrop.x;
860        crop.top = srcCrop.y;
861        crop.right = srcCrop.x + srcCrop.w;
862        crop.bottom = srcCrop.y + srcCrop.h;
863    }
864}
865
866int configureLowRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
867        const int& dpy, eMdpFlags& mdpFlags, const eZorder& z,
868        const eIsFg& isFg, const eDest& dest, Rotator **rot) {
869
870    private_handle_t *hnd = (private_handle_t *)layer->handle;
871    if(!hnd) {
872        ALOGE("%s: layer handle is NULL", __FUNCTION__);
873        ctx->mLayerRotMap[dpy]->reset();
874        return -1;
875    }
876
877    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
878
879    hwc_rect_t crop = integerizeSourceCrop(layer->sourceCropf);
880    hwc_rect_t dst = layer->displayFrame;
881    int transform = layer->transform;
882    eTransform orient = static_cast<eTransform>(transform);
883    int downscale = 0;
884    int rotFlags = ovutils::ROT_FLAGS_NONE;
885    Whf whf(getWidth(hnd), getHeight(hnd),
886            getMdpFormat(hnd->format), hnd->size);
887
888    uint32_t x = dst.left, y  = dst.top;
889    uint32_t w = dst.right - dst.left;
890    uint32_t h = dst.bottom - dst.top;
891
892    if(dpy) {
893        // Calculate the actionsafe dimensions for External(dpy = 1 or 2)
894        getActionSafePosition(ctx, dpy, x, y, w, h);
895        // Convert position to hwc_rect_t
896        dst.left = x;
897        dst.top = y;
898        dst.right = w + dst.left;
899        dst.bottom = h + dst.top;
900    }
901
902    if(isYuvBuffer(hnd) && ctx->mMDP.version >= qdutils::MDP_V4_2 &&
903       ctx->mMDP.version < qdutils::MDSS_V5) {
904        downscale =  getDownscaleFactor(
905            crop.right - crop.left,
906            crop.bottom - crop.top,
907            dst.right - dst.left,
908            dst.bottom - dst.top);
909        if(downscale) {
910            rotFlags = ROT_DOWNSCALE_ENABLED;
911        }
912    }
913
914    setMdpFlags(layer, mdpFlags, downscale);
915    trimLayer(ctx, dpy, transform, crop, dst);
916
917    //Will do something only if feature enabled and conditions suitable
918    //hollow call otherwise
919    if(ctx->mAD->prepare(ctx, crop, whf, hnd)) {
920        overlay::Writeback *wb = overlay::Writeback::getInstance();
921        whf.format = wb->getOutputFormat();
922    }
923
924    if(isYuvBuffer(hnd) && //if 90 component or downscale, use rot
925            ((transform & HWC_TRANSFORM_ROT_90) || downscale)) {
926        *rot = ctx->mRotMgr->getNext();
927        if(*rot == NULL) return -1;
928        BwcPM::setBwc(ctx, crop, dst, transform, mdpFlags);
929        //Configure rotator for pre-rotation
930        if(configRotator(*rot, whf, crop, mdpFlags, orient, downscale) < 0) {
931            ALOGE("%s: configRotator failed!", __FUNCTION__);
932            ctx->mOverlay->clear(dpy);
933            return -1;
934        }
935        ctx->mLayerRotMap[dpy]->add(layer, *rot);
936        whf.format = (*rot)->getDstFormat();
937        updateSource(orient, whf, crop);
938        rotFlags |= ovutils::ROT_PREROTATED;
939    }
940
941    //For the mdp, since either we are pre-rotating or MDP does flips
942    orient = OVERLAY_TRANSFORM_0;
943    transform = 0;
944
945    PipeArgs parg(mdpFlags, whf, z, isFg,
946                  static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
947                  (ovutils::eBlending) getBlending(layer->blending));
948
949    if(configMdp(ctx->mOverlay, parg, orient, crop, dst, metadata, dest) < 0) {
950        ALOGE("%s: commit failed for low res panel", __FUNCTION__);
951        ctx->mLayerRotMap[dpy]->reset();
952        return -1;
953    }
954    return 0;
955}
956
957int configureHighRes(hwc_context_t *ctx, hwc_layer_1_t *layer,
958        const int& dpy, eMdpFlags& mdpFlagsL, const eZorder& z,
959        const eIsFg& isFg, const eDest& lDest, const eDest& rDest,
960        Rotator **rot) {
961    private_handle_t *hnd = (private_handle_t *)layer->handle;
962    if(!hnd) {
963        ALOGE("%s: layer handle is NULL", __FUNCTION__);
964        return -1;
965    }
966
967    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
968
969    int hw_w = ctx->dpyAttr[dpy].xres;
970    int hw_h = ctx->dpyAttr[dpy].yres;
971    hwc_rect_t crop = integerizeSourceCrop(layer->sourceCropf);
972    hwc_rect_t dst = layer->displayFrame;
973    int transform = layer->transform;
974    eTransform orient = static_cast<eTransform>(transform);
975    const int downscale = 0;
976    int rotFlags = ROT_FLAGS_NONE;
977
978    Whf whf(getWidth(hnd), getHeight(hnd),
979            getMdpFormat(hnd->format), hnd->size);
980
981    setMdpFlags(layer, mdpFlagsL, 0);
982    trimLayer(ctx, dpy, transform, crop, dst);
983
984    //Will do something only if feature enabled and conditions suitable
985    //hollow call otherwise
986    if(ctx->mAD->prepare(ctx, crop, whf, hnd)) {
987        overlay::Writeback *wb = overlay::Writeback::getInstance();
988        whf.format = wb->getOutputFormat();
989    }
990
991    if(isYuvBuffer(hnd) && (transform & HWC_TRANSFORM_ROT_90)) {
992        (*rot) = ctx->mRotMgr->getNext();
993        if((*rot) == NULL) return -1;
994        //Configure rotator for pre-rotation
995        if(configRotator(*rot, whf, crop, mdpFlagsL, orient, downscale) < 0) {
996            ALOGE("%s: configRotator failed!", __FUNCTION__);
997            ctx->mOverlay->clear(dpy);
998            return -1;
999        }
1000        ctx->mLayerRotMap[dpy]->add(layer, *rot);
1001        whf.format = (*rot)->getDstFormat();
1002        updateSource(orient, whf, crop);
1003        rotFlags |= ROT_PREROTATED;
1004    }
1005
1006    eMdpFlags mdpFlagsR = mdpFlagsL;
1007    setMdpFlags(mdpFlagsR, OV_MDSS_MDP_RIGHT_MIXER);
1008
1009    hwc_rect_t tmp_cropL, tmp_dstL;
1010    hwc_rect_t tmp_cropR, tmp_dstR;
1011
1012    const int lSplit = getLeftSplit(ctx, dpy);
1013
1014    if(lDest != OV_INVALID) {
1015        tmp_cropL = crop;
1016        tmp_dstL = dst;
1017        hwc_rect_t scissor = {0, 0, lSplit, hw_h };
1018        qhwc::calculate_crop_rects(tmp_cropL, tmp_dstL, scissor, 0);
1019    }
1020    if(rDest != OV_INVALID) {
1021        tmp_cropR = crop;
1022        tmp_dstR = dst;
1023        hwc_rect_t scissor = {lSplit, 0, hw_w, hw_h };
1024        qhwc::calculate_crop_rects(tmp_cropR, tmp_dstR, scissor, 0);
1025    }
1026
1027    //When buffer is H-flipped, contents of mixer config also needs to swapped
1028    //Not needed if the layer is confined to one half of the screen.
1029    //If rotator has been used then it has also done the flips, so ignore them.
1030    if((orient & OVERLAY_TRANSFORM_FLIP_H) && lDest != OV_INVALID
1031            && rDest != OV_INVALID && (*rot) == NULL) {
1032        hwc_rect_t new_cropR;
1033        new_cropR.left = tmp_cropL.left;
1034        new_cropR.right = new_cropR.left + (tmp_cropR.right - tmp_cropR.left);
1035
1036        hwc_rect_t new_cropL;
1037        new_cropL.left  = new_cropR.right;
1038        new_cropL.right = tmp_cropR.right;
1039
1040        tmp_cropL.left =  new_cropL.left;
1041        tmp_cropL.right =  new_cropL.right;
1042
1043        tmp_cropR.left = new_cropR.left;
1044        tmp_cropR.right =  new_cropR.right;
1045
1046    }
1047
1048    //For the mdp, since either we are pre-rotating or MDP does flips
1049    orient = OVERLAY_TRANSFORM_0;
1050    transform = 0;
1051
1052    //configure left mixer
1053    if(lDest != OV_INVALID) {
1054        PipeArgs pargL(mdpFlagsL, whf, z, isFg,
1055                       static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
1056                       (ovutils::eBlending) getBlending(layer->blending));
1057
1058        if(configMdp(ctx->mOverlay, pargL, orient,
1059                tmp_cropL, tmp_dstL, metadata, lDest) < 0) {
1060            ALOGE("%s: commit failed for left mixer config", __FUNCTION__);
1061            return -1;
1062        }
1063    }
1064
1065    //configure right mixer
1066    if(rDest != OV_INVALID) {
1067        PipeArgs pargR(mdpFlagsR, whf, z, isFg,
1068                static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
1069                (ovutils::eBlending) getBlending(layer->blending));
1070
1071        tmp_dstR.right = tmp_dstR.right - lSplit;
1072        tmp_dstR.left = tmp_dstR.left - lSplit;
1073        if(configMdp(ctx->mOverlay, pargR, orient,
1074                tmp_cropR, tmp_dstR, metadata, rDest) < 0) {
1075            ALOGE("%s: commit failed for right mixer config", __FUNCTION__);
1076            return -1;
1077        }
1078    }
1079
1080    return 0;
1081}
1082
1083bool canUseRotator(hwc_context_t *ctx) {
1084    if(qdutils::MDPVersion::getInstance().is8x26() &&
1085            ctx->mExtDisplay->isExternalConnected()) {
1086        return false;
1087    }
1088    if(ctx->mMDP.version == qdutils::MDP_V3_0_4)
1089        return false;
1090    return true;
1091}
1092
1093int getLeftSplit(hwc_context_t *ctx, const int& dpy) {
1094    //Default even split for all displays with high res
1095    int lSplit = ctx->dpyAttr[dpy].xres / 2;
1096    if(dpy == HWC_DISPLAY_PRIMARY &&
1097            qdutils::MDPVersion::getInstance().getLeftSplit()) {
1098        //Override if split published by driver for primary
1099        lSplit = qdutils::MDPVersion::getInstance().getLeftSplit();
1100    }
1101    return lSplit;
1102}
1103
1104void setupSecondaryObjs(hwc_context_t *ctx, const int& dpy) {
1105    const int rSplit = 0;
1106    ctx->mFBUpdate[dpy] =
1107            IFBUpdate::getObject(ctx->dpyAttr[dpy].xres, rSplit, dpy);
1108    ctx->mMDPComp[dpy] =  MDPComp::getObject(
1109            ctx->dpyAttr[dpy].xres, rSplit, dpy);
1110
1111    int compositionType =
1112            qdutils::QCCompositionType::getInstance().getCompositionType();
1113    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
1114                           qdutils::COMPOSITION_TYPE_MDP |
1115                           qdutils::COMPOSITION_TYPE_C2D)) {
1116        ctx->mCopyBit[dpy] = new CopyBit();
1117    }
1118}
1119
1120void clearSecondaryObjs(hwc_context_t *ctx, const int& dpy) {
1121    if(ctx->mFBUpdate[dpy]) {
1122        delete ctx->mFBUpdate[dpy];
1123        ctx->mFBUpdate[dpy] = NULL;
1124    }
1125    if(ctx->mCopyBit[dpy]){
1126        delete ctx->mCopyBit[dpy];
1127        ctx->mCopyBit[dpy] = NULL;
1128    }
1129    if(ctx->mMDPComp[dpy]) {
1130        delete ctx->mMDPComp[dpy];
1131        ctx->mMDPComp[dpy] = NULL;
1132    }
1133}
1134
1135void BwcPM::setBwc(hwc_context_t *ctx, const hwc_rect_t& crop,
1136            const hwc_rect_t& dst, const int& transform,
1137            ovutils::eMdpFlags& mdpFlags) {
1138    //Target doesnt support Bwc
1139    if(!qdutils::MDPVersion::getInstance().supportsBWC()) {
1140        return;
1141    }
1142    //src width > MAX mixer supported dim
1143    if((crop.right - crop.left) > qdutils::MAX_DISPLAY_DIM) {
1144        return;
1145    }
1146    //External connected
1147    if(ctx->mExtDisplay->isExternalConnected()) {
1148        return;
1149    }
1150    //Decimation necessary, cannot use BWC. H/W requirement.
1151    if(qdutils::MDPVersion::getInstance().supportsDecimation()) {
1152        int src_w = crop.right - crop.left;
1153        int src_h = crop.bottom - crop.top;
1154        int dst_w = dst.right - dst.left;
1155        int dst_h = dst.bottom - dst.top;
1156        if(transform & HAL_TRANSFORM_ROT_90) {
1157            swap(src_w, src_h);
1158        }
1159        float horDscale = 0.0f;
1160        float verDscale = 0.0f;
1161        int horzDeci = 0;
1162        int vertDeci = 0;
1163        ovutils::getDecimationFactor(src_w, src_h, dst_w, dst_h, horDscale,
1164                verDscale);
1165        //TODO Use log2f once math.h has it
1166        if((int)horDscale)
1167            horzDeci = (int)(log(horDscale) / log(2));
1168        if((int)verDscale)
1169            vertDeci = (int)(log(verDscale) / log(2));
1170        if(horzDeci || vertDeci) return;
1171    }
1172    //Property
1173    char value[PROPERTY_VALUE_MAX];
1174    property_get("debug.disable.bwc", value, "0");
1175     if(atoi(value)) return;
1176
1177    ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDSS_MDP_BWC_EN);
1178}
1179
1180void LayerRotMap::add(hwc_layer_1_t* layer, Rotator *rot) {
1181    if(mCount >= MAX_SESS) return;
1182    mLayer[mCount] = layer;
1183    mRot[mCount] = rot;
1184    mCount++;
1185}
1186
1187void LayerRotMap::reset() {
1188    for (int i = 0; i < MAX_SESS; i++) {
1189        mLayer[i] = 0;
1190        mRot[i] = 0;
1191    }
1192    mCount = 0;
1193}
1194
1195void LayerRotMap::setReleaseFd(const int& fence) {
1196    for(uint32_t i = 0; i < mCount; i++) {
1197        mRot[i]->setReleaseFd(dup(fence));
1198    }
1199}
1200
1201};//namespace qhwc
1202