hwc_utils.cpp revision 08cced40871ca190d231b39b63bd2d8cd85a32a8 
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 <EGL/egl.h>
23#include <cutils/properties.h>
24#include <gralloc_priv.h>
25#include <fb_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 "QService.h"
34#include "comptype.h"
35namespace qhwc {
36
37// Opens Framebuffer device
38static void openFramebufferDevice(hwc_context_t *ctx)
39{
40    hw_module_t const *module;
41    if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
42        framebuffer_open(module, &(ctx->mFbDev));
43        private_module_t* m = reinterpret_cast<private_module_t*>(
44                ctx->mFbDev->common.module);
45        //xres, yres may not be 32 aligned
46        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = m->finfo.line_length /
47                                                (m->info.xres/8);
48        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = m->info.xres;
49        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = m->info.yres;
50        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = ctx->mFbDev->xdpi;
51        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ctx->mFbDev->ydpi;
52        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period =
53                1000000000l / ctx->mFbDev->fps;
54        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = openFb(HWC_DISPLAY_PRIMARY);
55    }
56}
57
58void initContext(hwc_context_t *ctx)
59{
60    openFramebufferDevice(ctx);
61    overlay::Overlay::initOverlay();
62    ctx->mOverlay = overlay::Overlay::getInstance();
63    ctx->mQService = qService::QService::getInstance(ctx);
64    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
65    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
66    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
67    //Is created and destroyed only once for primary
68    //For external it could get created and destroyed multiple times depending
69    //on what external we connect to.
70    ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
71        IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
72        HWC_DISPLAY_PRIMARY);
73
74    char value[PROPERTY_VALUE_MAX];
75    // Check if the target supports copybit compostion (dyn/mdp/c2d) to
76    // decide if we need to open the copybit module.
77    int compositionType =
78        qdutils::QCCompositionType::getInstance().getCompositionType();
79
80    if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
81                           qdutils::COMPOSITION_TYPE_MDP |
82                           qdutils::COMPOSITION_TYPE_C2D)) {
83            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
84    }
85
86    ctx->mExtDisplay = new ExternalDisplay(ctx);
87    for (uint32_t i = 0; i < HWC_NUM_DISPLAY_TYPES; i++)
88        ctx->mLayerCache[i] = new LayerCache();
89    ctx->mMDPComp = MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres);
90    MDPComp::init(ctx);
91
92    pthread_mutex_init(&(ctx->vstate.lock), NULL);
93    pthread_cond_init(&(ctx->vstate.cond), NULL);
94    ctx->vstate.enable = false;
95    ctx->mExtDispConfiguring = false;
96    ALOGI("Initializing Qualcomm Hardware Composer");
97    ALOGI("MDP version: %d", ctx->mMDP.version);
98}
99
100void closeContext(hwc_context_t *ctx)
101{
102    if(ctx->mOverlay) {
103        delete ctx->mOverlay;
104        ctx->mOverlay = NULL;
105    }
106
107    for(int i = 0; i< HWC_NUM_DISPLAY_TYPES; i++) {
108        if(ctx->mCopyBit[i]) {
109            delete ctx->mCopyBit[i];
110            ctx->mCopyBit[i] = NULL;
111        }
112    }
113
114    if(ctx->mFbDev) {
115        framebuffer_close(ctx->mFbDev);
116        ctx->mFbDev = NULL;
117        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
118        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
119    }
120
121    if(ctx->mExtDisplay) {
122        delete ctx->mExtDisplay;
123        ctx->mExtDisplay = NULL;
124    }
125
126    for(int i = 0; i < HWC_NUM_DISPLAY_TYPES; i++) {
127        if(ctx->mFBUpdate[i]) {
128            delete ctx->mFBUpdate[i];
129            ctx->mFBUpdate[i] = NULL;
130        }
131    }
132
133    if(ctx->mMDPComp) {
134        delete ctx->mMDPComp;
135        ctx->mMDPComp = NULL;
136    }
137
138    pthread_mutex_destroy(&(ctx->vstate.lock));
139    pthread_cond_destroy(&(ctx->vstate.cond));
140}
141
142
143void dumpsys_log(android::String8& buf, const char* fmt, ...)
144{
145    va_list varargs;
146    va_start(varargs, fmt);
147    buf.appendFormatV(fmt, varargs);
148    va_end(varargs);
149}
150
151static inline bool isAlphaScaled(hwc_layer_1_t const* layer) {
152    int dst_w, dst_h, src_w, src_h;
153
154    hwc_rect_t displayFrame  = layer->displayFrame;
155    hwc_rect_t sourceCrop = layer->sourceCrop;
156
157    dst_w = displayFrame.right - displayFrame.left;
158    dst_h = displayFrame.bottom - displayFrame.top;
159
160    src_w = sourceCrop.right - sourceCrop.left;
161    src_h = sourceCrop.bottom - sourceCrop.top;
162
163    if(((src_w != dst_w) || (src_h != dst_h))) {
164        if(layer->blending != HWC_BLENDING_NONE)
165            return true;
166    }
167    return false;
168}
169
170void setListStats(hwc_context_t *ctx,
171        const hwc_display_contents_1_t *list, int dpy) {
172
173    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
174    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
175    ctx->listStats[dpy].yuvCount = 0;
176    ctx->listStats[dpy].yuvIndex = -1;
177    ctx->listStats[dpy].skipCount = 0;
178    ctx->listStats[dpy].needsAlphaScale = false;
179
180    for (size_t i = 0; i < list->numHwLayers; i++) {
181        hwc_layer_1_t const* layer = &list->hwLayers[i];
182        private_handle_t *hnd = (private_handle_t *)layer->handle;
183
184        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
185            continue;
186        //We disregard FB being skip for now! so the else if
187        } else if (isSkipLayer(&list->hwLayers[i])) {
188            ctx->listStats[dpy].skipCount++;
189        }
190
191        if(!ctx->listStats[dpy].needsAlphaScale)
192            ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
193
194        if (UNLIKELY(isYuvBuffer(hnd))) {
195            ctx->listStats[dpy].yuvCount++;
196            ctx->listStats[dpy].yuvIndex = i;
197        }
198    }
199}
200
201
202static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
203        float& rightCutRatio, float& bottomCutRatio, int orient) {
204    if(orient & HAL_TRANSFORM_FLIP_H) {
205        swap(leftCutRatio, rightCutRatio);
206    }
207    if(orient & HAL_TRANSFORM_FLIP_V) {
208        swap(topCutRatio, bottomCutRatio);
209    }
210    if(orient & HAL_TRANSFORM_ROT_90) {
211        //Anti clock swapping
212        float tmpCutRatio = leftCutRatio;
213        leftCutRatio = topCutRatio;
214        topCutRatio = rightCutRatio;
215        rightCutRatio = bottomCutRatio;
216        bottomCutRatio = tmpCutRatio;
217    }
218}
219
220bool isSecuring(hwc_context_t* ctx) {
221    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
222       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
223        ctx->mSecuring) {
224        return true;
225    }
226    return false;
227}
228
229bool isSecureModePolicy(int mdpVersion) {
230    if (mdpVersion < qdutils::MDSS_V5)
231        return true;
232    else
233        return false;
234}
235
236//Crops source buffer against destination and FB boundaries
237void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
238        const int fbWidth, const int fbHeight, int orient) {
239    int& crop_l = crop.left;
240    int& crop_t = crop.top;
241    int& crop_r = crop.right;
242    int& crop_b = crop.bottom;
243    int crop_w = crop.right - crop.left;
244    int crop_h = crop.bottom - crop.top;
245
246    int& dst_l = dst.left;
247    int& dst_t = dst.top;
248    int& dst_r = dst.right;
249    int& dst_b = dst.bottom;
250    int dst_w = abs(dst.right - dst.left);
251    int dst_h = abs(dst.bottom - dst.top);
252
253    float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
254            bottomCutRatio = 0.0f;
255
256    if(dst_l < 0) {
257        leftCutRatio = (float)(0.0f - dst_l) / (float)dst_w;
258        dst_l = 0;
259    }
260    if(dst_r > fbWidth) {
261        rightCutRatio = (float)(dst_r - fbWidth) / (float)dst_w;
262        dst_r = fbWidth;
263    }
264    if(dst_t < 0) {
265        topCutRatio = (float)(0 - dst_t) / (float)dst_h;
266        dst_t = 0;
267    }
268    if(dst_b > fbHeight) {
269        bottomCutRatio = (float)(dst_b - fbHeight) / (float)dst_h;
270        dst_b = fbHeight;
271    }
272
273    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
274    crop_l += crop_w * leftCutRatio;
275    crop_t += crop_h * topCutRatio;
276    crop_r -= crop_w * rightCutRatio;
277    crop_b -= crop_h * bottomCutRatio;
278}
279
280bool isExternalActive(hwc_context_t* ctx) {
281    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
282}
283
284int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
285                                                        int fd) {
286    int ret = 0;
287    struct mdp_buf_sync data;
288    int acquireFd[MAX_NUM_LAYERS];
289    int count = 0;
290    int releaseFd = -1;
291    int fbFd = -1;
292    memset(&data, 0, sizeof(data));
293    bool swapzero = false;
294    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
295    data.acq_fen_fd = acquireFd;
296    data.rel_fen_fd = &releaseFd;
297    char property[PROPERTY_VALUE_MAX];
298    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
299        if(atoi(property) == 0)
300            swapzero = true;
301    }
302
303    //Accumulate acquireFenceFds
304    for(uint32_t i = 0; i < list->numHwLayers; i++) {
305        if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
306                        list->hwLayers[i].acquireFenceFd != -1) {
307            if(UNLIKELY(swapzero))
308                acquireFd[count++] = -1;
309            else
310                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
311        }
312        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
313            if(UNLIKELY(swapzero))
314                acquireFd[count++] = -1;
315            else if(fd != -1) {
316                //set the acquireFD from fd - which is coming from c2d
317                acquireFd[count++] = fd;
318                // Buffer sync IOCTL should be async when using c2d fence is
319                // used
320                data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
321            } else if(list->hwLayers[i].acquireFenceFd != -1)
322                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
323        }
324    }
325
326    data.acq_fen_fd_cnt = count;
327    fbFd = ctx->dpyAttr[dpy].fd;
328    //Waits for acquire fences, returns a release fence
329    if(LIKELY(!swapzero)) {
330        uint64_t start = systemTime();
331        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
332        ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
333                            __FUNCTION__, (size_t) ns2ms(systemTime() - start));
334    }
335    if(ret < 0) {
336        ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
337                strerror(errno));
338    }
339    for(uint32_t i = 0; i < list->numHwLayers; i++) {
340        if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
341           list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
342            //Close the acquireFenceFds
343            if(list->hwLayers[i].acquireFenceFd > 0) {
344                close(list->hwLayers[i].acquireFenceFd);
345                list->hwLayers[i].acquireFenceFd = -1;
346            }
347            if(fd > 0) {
348                close(fd);
349                fd = -1;
350            }
351            //Populate releaseFenceFds.
352            if(UNLIKELY(swapzero))
353                list->hwLayers[i].releaseFenceFd = -1;
354            else
355                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
356        }
357    }
358    if(UNLIKELY(swapzero)){
359        list->retireFenceFd = -1;
360        close(releaseFd);
361    } else {
362        list->retireFenceFd = releaseFd;
363    }
364    return ret;
365}
366
367void LayerCache::resetLayerCache(int num) {
368    for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
369        hnd[i] = NULL;
370    }
371    numHwLayers = num;
372}
373
374void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
375
376    int numFbLayers = 0;
377    int numCacheableLayers = 0;
378
379    canUseLayerCache = false;
380    //Bail if geometry changed or num of layers changed
381    if(list->flags & HWC_GEOMETRY_CHANGED ||
382       list->numHwLayers != numHwLayers ) {
383        resetLayerCache(list->numHwLayers);
384        return;
385    }
386
387    for(uint32_t i = 0; i < list->numHwLayers; i++) {
388        //Bail on skip layers
389        if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
390            resetLayerCache(list->numHwLayers);
391            return;
392        }
393
394        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
395            numFbLayers++;
396            if(hnd[i] == NULL) {
397                hnd[i] = list->hwLayers[i].handle;
398            } else if (hnd[i] ==
399                       list->hwLayers[i].handle) {
400                numCacheableLayers++;
401            } else {
402                hnd[i] = NULL;
403                return;
404            }
405        } else {
406            hnd[i] = NULL;
407        }
408    }
409    if(numFbLayers == numCacheableLayers)
410        canUseLayerCache = true;
411
412    //XXX: The marking part is separate, if MDP comp wants
413    // to use it in the future. Right now getting MDP comp
414    // to use this is more trouble than it is worth.
415    markCachedLayersAsOverlay(list);
416}
417
418void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
419    //This optimization only works if ALL the layer handles
420    //that were on the framebuffer didn't change.
421    if(canUseLayerCache){
422        for(uint32_t i = 0; i < list->numHwLayers; i++) {
423            if (list->hwLayers[i].handle &&
424                list->hwLayers[i].handle == hnd[i] &&
425                list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
426            {
427                list->hwLayers[i].compositionType = HWC_OVERLAY;
428            }
429        }
430    }
431
432}
433
434};//namespace
435