hwc_utils.cpp revision 5a107b4b7124301baf3b9e58089c7621fb9dfc95 
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].skipCount = 0;
176    ctx->listStats[dpy].needsAlphaScale = false;
177    ctx->listStats[dpy].yuvCount = 0;
178
179    for (size_t i = 0; i < list->numHwLayers; i++) {
180        hwc_layer_1_t const* layer = &list->hwLayers[i];
181        private_handle_t *hnd = (private_handle_t *)layer->handle;
182
183        //reset stored yuv index
184        ctx->listStats[dpy].yuvIndices[i] = -1;
185
186        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
187            continue;
188        //We disregard FB being skip for now! so the else if
189        } else if (isSkipLayer(&list->hwLayers[i])) {
190            ctx->listStats[dpy].skipCount++;
191        }
192
193        if(!ctx->listStats[dpy].needsAlphaScale)
194            ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
195
196        if (UNLIKELY(isYuvBuffer(hnd))) {
197            int& yuvCount = ctx->listStats[dpy].yuvCount;
198            ctx->listStats[dpy].yuvIndices[yuvCount] = i;
199            yuvCount++;
200        }
201    }
202}
203
204
205static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
206        float& rightCutRatio, float& bottomCutRatio, int orient) {
207    if(orient & HAL_TRANSFORM_FLIP_H) {
208        swap(leftCutRatio, rightCutRatio);
209    }
210    if(orient & HAL_TRANSFORM_FLIP_V) {
211        swap(topCutRatio, bottomCutRatio);
212    }
213    if(orient & HAL_TRANSFORM_ROT_90) {
214        //Anti clock swapping
215        float tmpCutRatio = leftCutRatio;
216        leftCutRatio = topCutRatio;
217        topCutRatio = rightCutRatio;
218        rightCutRatio = bottomCutRatio;
219        bottomCutRatio = tmpCutRatio;
220    }
221}
222
223bool isSecuring(hwc_context_t* ctx) {
224    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
225       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
226        ctx->mSecuring) {
227        return true;
228    }
229    return false;
230}
231
232bool isSecureModePolicy(int mdpVersion) {
233    if (mdpVersion < qdutils::MDSS_V5)
234        return true;
235    else
236        return false;
237}
238
239//Crops source buffer against destination and FB boundaries
240void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
241        const int fbWidth, const int fbHeight, int orient) {
242    int& crop_l = crop.left;
243    int& crop_t = crop.top;
244    int& crop_r = crop.right;
245    int& crop_b = crop.bottom;
246    int crop_w = crop.right - crop.left;
247    int crop_h = crop.bottom - crop.top;
248
249    int& dst_l = dst.left;
250    int& dst_t = dst.top;
251    int& dst_r = dst.right;
252    int& dst_b = dst.bottom;
253    int dst_w = abs(dst.right - dst.left);
254    int dst_h = abs(dst.bottom - dst.top);
255
256    float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
257            bottomCutRatio = 0.0f;
258
259    if(dst_l < 0) {
260        leftCutRatio = (float)(0.0f - dst_l) / (float)dst_w;
261        dst_l = 0;
262    }
263    if(dst_r > fbWidth) {
264        rightCutRatio = (float)(dst_r - fbWidth) / (float)dst_w;
265        dst_r = fbWidth;
266    }
267    if(dst_t < 0) {
268        topCutRatio = (float)(0 - dst_t) / (float)dst_h;
269        dst_t = 0;
270    }
271    if(dst_b > fbHeight) {
272        bottomCutRatio = (float)(dst_b - fbHeight) / (float)dst_h;
273        dst_b = fbHeight;
274    }
275
276    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
277    crop_l += crop_w * leftCutRatio;
278    crop_t += crop_h * topCutRatio;
279    crop_r -= crop_w * rightCutRatio;
280    crop_b -= crop_h * bottomCutRatio;
281}
282
283bool isExternalActive(hwc_context_t* ctx) {
284    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
285}
286
287int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
288                                                        int fd) {
289    int ret = 0;
290    struct mdp_buf_sync data;
291    int acquireFd[MAX_NUM_LAYERS];
292    int count = 0;
293    int releaseFd = -1;
294    int fbFd = -1;
295    memset(&data, 0, sizeof(data));
296    bool swapzero = false;
297    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
298    data.acq_fen_fd = acquireFd;
299    data.rel_fen_fd = &releaseFd;
300    char property[PROPERTY_VALUE_MAX];
301    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
302        if(atoi(property) == 0)
303            swapzero = true;
304    }
305
306    //Accumulate acquireFenceFds
307    for(uint32_t i = 0; i < list->numHwLayers; i++) {
308        if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
309                        list->hwLayers[i].acquireFenceFd != -1) {
310            if(UNLIKELY(swapzero))
311                acquireFd[count++] = -1;
312            else
313                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
314        }
315        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
316            if(UNLIKELY(swapzero))
317                acquireFd[count++] = -1;
318            else if(fd != -1) {
319                //set the acquireFD from fd - which is coming from c2d
320                acquireFd[count++] = fd;
321                // Buffer sync IOCTL should be async when using c2d fence is
322                // used
323                data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
324            } else if(list->hwLayers[i].acquireFenceFd != -1)
325                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
326        }
327    }
328
329    data.acq_fen_fd_cnt = count;
330    fbFd = ctx->dpyAttr[dpy].fd;
331    //Waits for acquire fences, returns a release fence
332    if(LIKELY(!swapzero)) {
333        uint64_t start = systemTime();
334        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
335        ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
336                            __FUNCTION__, (size_t) ns2ms(systemTime() - start));
337    }
338    if(ret < 0) {
339        ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
340                strerror(errno));
341    }
342    for(uint32_t i = 0; i < list->numHwLayers; i++) {
343        if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
344           list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
345            //Close the acquireFenceFds
346            if(list->hwLayers[i].acquireFenceFd > 0) {
347                close(list->hwLayers[i].acquireFenceFd);
348                list->hwLayers[i].acquireFenceFd = -1;
349            }
350            if(fd > 0) {
351                close(fd);
352                fd = -1;
353            }
354            //Populate releaseFenceFds.
355            if(UNLIKELY(swapzero))
356                list->hwLayers[i].releaseFenceFd = -1;
357            else
358                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
359        }
360    }
361    if(UNLIKELY(swapzero)){
362        list->retireFenceFd = -1;
363        close(releaseFd);
364    } else {
365        list->retireFenceFd = releaseFd;
366    }
367    return ret;
368}
369
370void LayerCache::resetLayerCache(int num) {
371    for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
372        hnd[i] = NULL;
373    }
374    numHwLayers = num;
375}
376
377void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
378
379    int numFbLayers = 0;
380    int numCacheableLayers = 0;
381
382    canUseLayerCache = false;
383    //Bail if geometry changed or num of layers changed
384    if(list->flags & HWC_GEOMETRY_CHANGED ||
385       list->numHwLayers != numHwLayers ) {
386        resetLayerCache(list->numHwLayers);
387        return;
388    }
389
390    for(uint32_t i = 0; i < list->numHwLayers; i++) {
391        //Bail on skip layers
392        if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
393            resetLayerCache(list->numHwLayers);
394            return;
395        }
396
397        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
398            numFbLayers++;
399            if(hnd[i] == NULL) {
400                hnd[i] = list->hwLayers[i].handle;
401            } else if (hnd[i] ==
402                       list->hwLayers[i].handle) {
403                numCacheableLayers++;
404            } else {
405                hnd[i] = NULL;
406                return;
407            }
408        } else {
409            hnd[i] = NULL;
410        }
411    }
412    if(numFbLayers == numCacheableLayers)
413        canUseLayerCache = true;
414
415    //XXX: The marking part is separate, if MDP comp wants
416    // to use it in the future. Right now getting MDP comp
417    // to use this is more trouble than it is worth.
418    markCachedLayersAsOverlay(list);
419}
420
421void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
422    //This optimization only works if ALL the layer handles
423    //that were on the framebuffer didn't change.
424    if(canUseLayerCache){
425        for(uint32_t i = 0; i < list->numHwLayers; i++) {
426            if (list->hwLayers[i].handle &&
427                list->hwLayers[i].handle == hnd[i] &&
428                list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
429            {
430                list->hwLayers[i].compositionType = HWC_OVERLAY;
431            }
432        }
433    }
434
435}
436
437};//namespace
438