hwc_utils.cpp revision 93393d36207ef501e851c98491befd9e528b6b1a 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012-2013, The Linux Foundation All rights reserved.
4 *
5 * Not a Contribution, Apache license notifications and license are retained
6 * for attribution purposes only.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 *      http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20#define HWC_UTILS_DEBUG 0
21#include <sys/ioctl.h>
22#include <binder/IServiceManager.h>
23#include <EGL/egl.h>
24#include <cutils/properties.h>
25#include <gralloc_priv.h>
26#include <overlay.h>
27#include "hwc_utils.h"
28#include "hwc_mdpcomp.h"
29#include "hwc_fbupdate.h"
30#include "mdp_version.h"
31#include "hwc_copybit.h"
32#include "external.h"
33#include "hwc_qclient.h"
34#include "QService.h"
35#include "comptype.h"
36
37using namespace qClient;
38using namespace qService;
39using namespace android;
40
41namespace qhwc {
42
43static int openFramebufferDevice(hwc_context_t *ctx)
44{
45    struct fb_fix_screeninfo finfo;
46    struct fb_var_screeninfo info;
47
48    int fb_fd = openFb(HWC_DISPLAY_PRIMARY);
49
50    if (ioctl(fb_fd, FBIOGET_VSCREENINFO, &info) == -1)
51        return -errno;
52
53    if (int(info.width) <= 0 || int(info.height) <= 0) {
54        // the driver doesn't return that information
55        // default to 160 dpi
56        info.width  = ((info.xres * 25.4f)/160.0f + 0.5f);
57        info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
58    }
59
60    float xdpi = (info.xres * 25.4f) / info.width;
61    float ydpi = (info.yres * 25.4f) / info.height;
62
63#ifdef MSMFB_METADATA_GET
64    struct msmfb_metadata metadata;
65    memset(&metadata, 0 , sizeof(metadata));
66    metadata.op = metadata_op_frame_rate;
67
68    if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) {
69        ALOGE("Error retrieving panel frame rate");
70        return -errno;
71    }
72
73    float fps  = metadata.data.panel_frame_rate;
74#else
75    //XXX: Remove reserved field usage on all baselines
76    //The reserved[3] field is used to store FPS by the driver.
77    float fps  = info.reserved[3] & 0xFF;
78#endif
79
80    if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &finfo) == -1)
81        return -errno;
82
83    if (finfo.smem_len <= 0)
84        return -errno;
85
86    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = fb_fd;
87    //xres, yres may not be 32 aligned
88    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = finfo.line_length /(info.xres/8);
89    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = info.xres;
90    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = info.yres;
91    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = xdpi;
92    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ydpi;
93    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period = 1000000000l / fps;
94
95    return 0;
96}
97
98void initContext(hwc_context_t *ctx)
99{
100    if(openFramebufferDevice(ctx) < 0) {
101        ALOGE("%s: failed to open framebuffer!!", __FUNCTION__);
102    }
103
104    overlay::Overlay::initOverlay();
105    ctx->mOverlay = overlay::Overlay::getInstance();
106    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
107    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
108    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
109    //Is created and destroyed only once for primary
110    //For external it could get created and destroyed multiple times depending
111    //on what external we connect to.
112    ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
113        IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
114        HWC_DISPLAY_PRIMARY);
115
116    char value[PROPERTY_VALUE_MAX];
117    // Check if the target supports copybit compostion (dyn/mdp/c2d) to
118    // decide if we need to open the copybit module.
119    int compositionType =
120        qdutils::QCCompositionType::getInstance().getCompositionType();
121
122    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
123                           qdutils::COMPOSITION_TYPE_MDP |
124                           qdutils::COMPOSITION_TYPE_C2D)) {
125            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
126    }
127
128    ctx->mExtDisplay = new ExternalDisplay(ctx);
129    for (uint32_t i = 0; i < MAX_DISPLAYS; i++)
130        ctx->mLayerCache[i] = new LayerCache();
131    ctx->mMDPComp = MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres);
132    MDPComp::init(ctx);
133
134    pthread_mutex_init(&(ctx->vstate.lock), NULL);
135    pthread_cond_init(&(ctx->vstate.cond), NULL);
136    ctx->vstate.enable = false;
137    ctx->mExtDispConfiguring = false;
138
139    //Right now hwc starts the service but anybody could do it, or it could be
140    //independent process as well.
141    QService::init();
142    sp<IQClient> client = new QClient(ctx);
143    interface_cast<IQService>(
144            defaultServiceManager()->getService(
145            String16("display.qservice")))->connect(client);
146
147    ALOGI("Initializing Qualcomm Hardware Composer");
148    ALOGI("MDP version: %d", ctx->mMDP.version);
149}
150
151void closeContext(hwc_context_t *ctx)
152{
153    if(ctx->mOverlay) {
154        delete ctx->mOverlay;
155        ctx->mOverlay = NULL;
156    }
157
158    for(int i = 0; i < MAX_DISPLAYS; i++) {
159        if(ctx->mCopyBit[i]) {
160            delete ctx->mCopyBit[i];
161            ctx->mCopyBit[i] = NULL;
162        }
163    }
164
165    if(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd) {
166        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
167        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
168    }
169
170    if(ctx->mExtDisplay) {
171        delete ctx->mExtDisplay;
172        ctx->mExtDisplay = NULL;
173    }
174
175    for(int i = 0; i < MAX_DISPLAYS; i++) {
176        if(ctx->mFBUpdate[i]) {
177            delete ctx->mFBUpdate[i];
178            ctx->mFBUpdate[i] = NULL;
179        }
180    }
181
182    if(ctx->mMDPComp) {
183        delete ctx->mMDPComp;
184        ctx->mMDPComp = NULL;
185    }
186
187    pthread_mutex_destroy(&(ctx->vstate.lock));
188    pthread_cond_destroy(&(ctx->vstate.cond));
189}
190
191
192void dumpsys_log(android::String8& buf, const char* fmt, ...)
193{
194    va_list varargs;
195    va_start(varargs, fmt);
196    buf.appendFormatV(fmt, varargs);
197    va_end(varargs);
198}
199
200/* Calculates the destination position based on the action safe rectangle */
201void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x,
202                           uint32_t& y, uint32_t& w, uint32_t& h) {
203
204    // if external supports underscan, do nothing
205    // it will be taken care in the driver
206    if(ctx->mExtDisplay->isCEUnderscanSupported())
207        return;
208
209    float wRatio = 1.0;
210    float hRatio = 1.0;
211    float xRatio = 1.0;
212    float yRatio = 1.0;
213
214    float fbWidth = ctx->dpyAttr[dpy].xres;
215    float fbHeight = ctx->dpyAttr[dpy].yres;
216
217    float asX = 0;
218    float asY = 0;
219    float asW = fbWidth;
220    float asH= fbHeight;
221    char value[PROPERTY_VALUE_MAX];
222
223    // Apply action safe parameters
224    property_get("hw.actionsafe.width", value, "0");
225    int asWidthRatio = atoi(value);
226    property_get("hw.actionsafe.height", value, "0");
227    int asHeightRatio = atoi(value);
228    // based on the action safe ratio, get the Action safe rectangle
229    asW = fbWidth * (1.0f -  asWidthRatio / 100.0f);
230    asH = fbHeight * (1.0f -  asHeightRatio / 100.0f);
231    asX = (fbWidth - asW) / 2;
232    asY = (fbHeight - asH) / 2;
233
234    // calculate the position ratio
235    xRatio = (float)x/fbWidth;
236    yRatio = (float)y/fbHeight;
237    wRatio = (float)w/fbWidth;
238    hRatio = (float)h/fbHeight;
239
240    //Calculate the position...
241    x = (xRatio * asW) + asX;
242    y = (yRatio * asH) + asY;
243    w = (wRatio * asW);
244    h = (hRatio * asH);
245
246    return;
247}
248
249bool needsScaling(hwc_layer_1_t const* layer) {
250    int dst_w, dst_h, src_w, src_h;
251
252    hwc_rect_t displayFrame  = layer->displayFrame;
253    hwc_rect_t sourceCrop = layer->sourceCrop;
254
255    dst_w = displayFrame.right - displayFrame.left;
256    dst_h = displayFrame.bottom - displayFrame.top;
257
258    src_w = sourceCrop.right - sourceCrop.left;
259    src_h = sourceCrop.bottom - sourceCrop.top;
260
261    if(((src_w != dst_w) || (src_h != dst_h)))
262        return true;
263
264    return false;
265}
266
267bool isAlphaScaled(hwc_layer_1_t const* layer) {
268    if(needsScaling(layer)) {
269        if(layer->blending != HWC_BLENDING_NONE)
270            return true;
271    }
272    return false;
273}
274
275void setListStats(hwc_context_t *ctx,
276        const hwc_display_contents_1_t *list, int dpy) {
277
278    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
279    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
280    ctx->listStats[dpy].skipCount = 0;
281    ctx->listStats[dpy].needsAlphaScale = false;
282    ctx->listStats[dpy].yuvCount = 0;
283    ctx->mDMAInUse = false;
284
285    for (size_t i = 0; i < list->numHwLayers; i++) {
286        hwc_layer_1_t const* layer = &list->hwLayers[i];
287        private_handle_t *hnd = (private_handle_t *)layer->handle;
288
289        //reset stored yuv index
290        ctx->listStats[dpy].yuvIndices[i] = -1;
291
292        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
293            continue;
294        //We disregard FB being skip for now! so the else if
295        } else if (isSkipLayer(&list->hwLayers[i])) {
296            ctx->listStats[dpy].skipCount++;
297        } else if (UNLIKELY(isYuvBuffer(hnd))) {
298            int& yuvCount = ctx->listStats[dpy].yuvCount;
299            ctx->listStats[dpy].yuvIndices[yuvCount] = i;
300            yuvCount++;
301
302            if((layer->transform & HWC_TRANSFORM_ROT_90) && !ctx->mDMAInUse)
303                ctx->mDMAInUse = true;
304        }
305
306        if(!ctx->listStats[dpy].needsAlphaScale)
307            ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
308    }
309}
310
311
312static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
313        float& rightCutRatio, float& bottomCutRatio, int orient) {
314    if(orient & HAL_TRANSFORM_FLIP_H) {
315        swap(leftCutRatio, rightCutRatio);
316    }
317    if(orient & HAL_TRANSFORM_FLIP_V) {
318        swap(topCutRatio, bottomCutRatio);
319    }
320    if(orient & HAL_TRANSFORM_ROT_90) {
321        //Anti clock swapping
322        float tmpCutRatio = leftCutRatio;
323        leftCutRatio = topCutRatio;
324        topCutRatio = rightCutRatio;
325        rightCutRatio = bottomCutRatio;
326        bottomCutRatio = tmpCutRatio;
327    }
328}
329
330bool isSecuring(hwc_context_t* ctx) {
331    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
332       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
333        ctx->mSecuring) {
334        return true;
335    }
336    return false;
337}
338
339bool isSecureModePolicy(int mdpVersion) {
340    if (mdpVersion < qdutils::MDSS_V5)
341        return true;
342    else
343        return false;
344}
345
346//Crops source buffer against destination and FB boundaries
347void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
348                          const hwc_rect_t& scissor, int orient) {
349
350    int& crop_l = crop.left;
351    int& crop_t = crop.top;
352    int& crop_r = crop.right;
353    int& crop_b = crop.bottom;
354    int crop_w = crop.right - crop.left;
355    int crop_h = crop.bottom - crop.top;
356
357    int& dst_l = dst.left;
358    int& dst_t = dst.top;
359    int& dst_r = dst.right;
360    int& dst_b = dst.bottom;
361    int dst_w = abs(dst.right - dst.left);
362    int dst_h = abs(dst.bottom - dst.top);
363
364    const int& sci_l = scissor.left;
365    const int& sci_t = scissor.top;
366    const int& sci_r = scissor.right;
367    const int& sci_b = scissor.bottom;
368    int sci_w = abs(sci_r - sci_l);
369    int sci_h = abs(sci_b - sci_t);
370
371    float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
372            bottomCutRatio = 0.0f;
373
374    if(dst_l < sci_l) {
375        leftCutRatio = (float)(sci_l - dst_l) / (float)dst_w;
376        dst_l = sci_l;
377    }
378
379    if(dst_r > sci_r) {
380        rightCutRatio = (float)(dst_r - sci_r) / (float)dst_w;
381        dst_r = sci_r;
382    }
383
384    if(dst_t < sci_t) {
385        topCutRatio = (float)(sci_t - dst_t) / (float)dst_h;
386        dst_t = sci_t;
387    }
388
389    if(dst_b > sci_b) {
390        bottomCutRatio = (float)(dst_b - sci_b) / (float)dst_h;
391        dst_b = sci_b;
392    }
393
394    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
395    crop_l += crop_w * leftCutRatio;
396    crop_t += crop_h * topCutRatio;
397    crop_r -= crop_w * rightCutRatio;
398    crop_b -= crop_h * bottomCutRatio;
399}
400
401void getNonWormholeRegion(hwc_display_contents_1_t* list,
402                              hwc_rect_t& nwr)
403{
404    uint32_t last = list->numHwLayers - 1;
405    hwc_rect_t fbDisplayFrame = list->hwLayers[last].displayFrame;
406    //Initiliaze nwr to first frame
407    nwr.left =  list->hwLayers[0].displayFrame.left;
408    nwr.top =  list->hwLayers[0].displayFrame.top;
409    nwr.right =  list->hwLayers[0].displayFrame.right;
410    nwr.bottom =  list->hwLayers[0].displayFrame.bottom;
411
412    for (uint32_t i = 1; i < last; i++) {
413        hwc_rect_t displayFrame = list->hwLayers[i].displayFrame;
414        nwr.left   = min(nwr.left, displayFrame.left);
415        nwr.top    = min(nwr.top, displayFrame.top);
416        nwr.right  = max(nwr.right, displayFrame.right);
417        nwr.bottom = max(nwr.bottom, displayFrame.bottom);
418    }
419
420    //Intersect with the framebuffer
421    nwr.left   = max(nwr.left, fbDisplayFrame.left);
422    nwr.top    = max(nwr.top, fbDisplayFrame.top);
423    nwr.right  = min(nwr.right, fbDisplayFrame.right);
424    nwr.bottom = min(nwr.bottom, fbDisplayFrame.bottom);
425
426}
427
428bool isExternalActive(hwc_context_t* ctx) {
429    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
430}
431
432void closeAcquireFds(hwc_display_contents_1_t* list) {
433    for(uint32_t i = 0; list && i < list->numHwLayers; i++) {
434        //Close the acquireFenceFds
435        //HWC_FRAMEBUFFER are -1 already by SF, rest we close.
436        if(list->hwLayers[i].acquireFenceFd >= 0) {
437            close(list->hwLayers[i].acquireFenceFd);
438            list->hwLayers[i].acquireFenceFd = -1;
439        }
440    }
441}
442
443int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
444                                                        int fd) {
445    int ret = 0;
446    struct mdp_buf_sync data;
447    int acquireFd[MAX_NUM_LAYERS];
448    int count = 0;
449    int releaseFd = -1;
450    int fbFd = -1;
451    memset(&data, 0, sizeof(data));
452    bool swapzero = false;
453    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
454    data.acq_fen_fd = acquireFd;
455    data.rel_fen_fd = &releaseFd;
456    char property[PROPERTY_VALUE_MAX];
457    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
458        if(atoi(property) == 0)
459            swapzero = true;
460    }
461
462    //Accumulate acquireFenceFds
463    for(uint32_t i = 0; i < list->numHwLayers; i++) {
464        if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
465                        list->hwLayers[i].acquireFenceFd != -1) {
466            if(UNLIKELY(swapzero))
467                acquireFd[count++] = -1;
468            else
469                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
470        }
471        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
472            if(UNLIKELY(swapzero))
473                acquireFd[count++] = -1;
474            else if(fd != -1) {
475                //set the acquireFD from fd - which is coming from c2d
476                acquireFd[count++] = fd;
477                // Buffer sync IOCTL should be async when using c2d fence is
478                // used
479                data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
480            } else if(list->hwLayers[i].acquireFenceFd != -1)
481                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
482        }
483    }
484
485    data.acq_fen_fd_cnt = count;
486    fbFd = ctx->dpyAttr[dpy].fd;
487    //Waits for acquire fences, returns a release fence
488    if(LIKELY(!swapzero)) {
489        uint64_t start = systemTime();
490        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
491        ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
492                            __FUNCTION__, (size_t) ns2ms(systemTime() - start));
493    }
494
495    if(ret < 0) {
496        ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
497                strerror(errno));
498    }
499
500    for(uint32_t i = 0; i < list->numHwLayers; i++) {
501        if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
502           list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
503            //Populate releaseFenceFds.
504            if(UNLIKELY(swapzero))
505                list->hwLayers[i].releaseFenceFd = -1;
506            else
507                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
508        }
509    }
510
511    if(fd >= 0) {
512        close(fd);
513        fd = -1;
514    }
515
516    if (ctx->mCopyBit[dpy])
517        ctx->mCopyBit[dpy]->setReleaseFd(releaseFd);
518    if(UNLIKELY(swapzero)){
519        list->retireFenceFd = -1;
520        close(releaseFd);
521    } else {
522        list->retireFenceFd = releaseFd;
523    }
524
525    return ret;
526}
527
528void LayerCache::resetLayerCache(int num) {
529    for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
530        hnd[i] = NULL;
531    }
532    numHwLayers = num;
533}
534
535void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
536
537    int numFbLayers = 0;
538    int numCacheableLayers = 0;
539
540    canUseLayerCache = false;
541    //Bail if geometry changed or num of layers changed
542    if(list->flags & HWC_GEOMETRY_CHANGED ||
543       list->numHwLayers != numHwLayers ) {
544        resetLayerCache(list->numHwLayers);
545        return;
546    }
547
548    for(uint32_t i = 0; i < list->numHwLayers; i++) {
549        //Bail on skip layers
550        if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
551            resetLayerCache(list->numHwLayers);
552            return;
553        }
554
555        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
556            numFbLayers++;
557            if(hnd[i] == NULL) {
558                hnd[i] = list->hwLayers[i].handle;
559            } else if (hnd[i] ==
560                       list->hwLayers[i].handle) {
561                numCacheableLayers++;
562            } else {
563                hnd[i] = NULL;
564                return;
565            }
566        } else {
567            hnd[i] = NULL;
568        }
569    }
570    if(numFbLayers == numCacheableLayers)
571        canUseLayerCache = true;
572
573    //XXX: The marking part is separate, if MDP comp wants
574    // to use it in the future. Right now getting MDP comp
575    // to use this is more trouble than it is worth.
576    markCachedLayersAsOverlay(list);
577}
578
579void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
580    //This optimization only works if ALL the layer handles
581    //that were on the framebuffer didn't change.
582    if(canUseLayerCache){
583        for(uint32_t i = 0; i < list->numHwLayers; i++) {
584            if (list->hwLayers[i].handle &&
585                list->hwLayers[i].handle == hnd[i] &&
586                list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
587            {
588                list->hwLayers[i].compositionType = HWC_OVERLAY;
589            }
590        }
591    }
592
593}
594
595};//namespace
596