hwc_utils.cpp revision bfa005e8c51529d99b9c360a444d351ebe0885f7 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012, The Linux Foundation All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#include <sys/ioctl.h>
19#include <EGL/egl.h>
20#include <cutils/properties.h>
21#include <gralloc_priv.h>
22#include <fb_priv.h>
23#include <overlay.h>
24#include "hwc_utils.h"
25#include "hwc_mdpcomp.h"
26#include "hwc_fbupdate.h"
27#include "mdp_version.h"
28#include "external.h"
29#include "QService.h"
30
31namespace qhwc {
32
33// Opens Framebuffer device
34static void openFramebufferDevice(hwc_context_t *ctx)
35{
36    hw_module_t const *module;
37    if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
38        framebuffer_open(module, &(ctx->mFbDev));
39        private_module_t* m = reinterpret_cast<private_module_t*>(
40                ctx->mFbDev->common.module);
41        //xres, yres may not be 32 aligned
42        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = m->finfo.line_length /
43                                                (m->info.xres/8);
44        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = m->info.xres;
45        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = m->info.yres;
46        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = ctx->mFbDev->xdpi;
47        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ctx->mFbDev->ydpi;
48        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period =
49                1000000000l / ctx->mFbDev->fps;
50        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = openFb(HWC_DISPLAY_PRIMARY);
51    }
52}
53
54void initContext(hwc_context_t *ctx)
55{
56    openFramebufferDevice(ctx);
57    overlay::Overlay::initOverlay();
58    ctx->mOverlay = overlay::Overlay::getInstance();
59    ctx->mQService = qService::QService::getInstance(ctx);
60    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
61    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
62    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
63    //Is created and destroyed only once for primary
64    //For external it could get created and destroyed multiple times depending
65    //on what external we connect to.
66    ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
67        IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
68        HWC_DISPLAY_PRIMARY);
69    ctx->mExtDisplay = new ExternalDisplay(ctx);
70    for (uint32_t i = 0; i < HWC_NUM_DISPLAY_TYPES; i++)
71        ctx->mLayerCache[i] = new LayerCache();
72    ctx->mMDPComp = MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres);
73    MDPComp::init(ctx);
74
75    pthread_mutex_init(&(ctx->vstate.lock), NULL);
76    pthread_cond_init(&(ctx->vstate.cond), NULL);
77    ctx->vstate.enable = false;
78
79    ALOGI("Initializing Qualcomm Hardware Composer");
80    ALOGI("MDP version: %d", ctx->mMDP.version);
81}
82
83void closeContext(hwc_context_t *ctx)
84{
85    if(ctx->mOverlay) {
86        delete ctx->mOverlay;
87        ctx->mOverlay = NULL;
88    }
89
90    if(ctx->mFbDev) {
91        framebuffer_close(ctx->mFbDev);
92        ctx->mFbDev = NULL;
93        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
94        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
95    }
96
97    if(ctx->mExtDisplay) {
98        delete ctx->mExtDisplay;
99        ctx->mExtDisplay = NULL;
100    }
101
102    for(int i = 0; i < HWC_NUM_DISPLAY_TYPES; i++) {
103        if(ctx->mFBUpdate[i]) {
104            delete ctx->mFBUpdate[i];
105            ctx->mFBUpdate[i] = NULL;
106        }
107    }
108
109    if(ctx->mMDPComp) {
110        delete ctx->mMDPComp;
111        ctx->mMDPComp = NULL;
112    }
113
114    pthread_mutex_destroy(&(ctx->vstate.lock));
115    pthread_cond_destroy(&(ctx->vstate.cond));
116}
117
118
119void dumpsys_log(android::String8& buf, const char* fmt, ...)
120{
121    va_list varargs;
122    va_start(varargs, fmt);
123    buf.appendFormatV(fmt, varargs);
124    va_end(varargs);
125}
126
127static inline bool isAlphaScaled(hwc_layer_1_t const* layer) {
128    int dst_w, dst_h, src_w, src_h;
129
130    hwc_rect_t displayFrame  = layer->displayFrame;
131    hwc_rect_t sourceCrop = layer->sourceCrop;
132
133    dst_w = displayFrame.right - displayFrame.left;
134    dst_h = displayFrame.bottom - displayFrame.top;
135
136    src_w = sourceCrop.right - sourceCrop.left;
137    src_h = sourceCrop.bottom - sourceCrop.top;
138
139    if(((src_w != dst_w) || (src_h != dst_h))) {
140        if(layer->blending != HWC_BLENDING_NONE)
141            return true;
142    }
143    return false;
144}
145
146void setListStats(hwc_context_t *ctx,
147        const hwc_display_contents_1_t *list, int dpy) {
148
149    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
150    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
151    ctx->listStats[dpy].yuvCount = 0;
152    ctx->listStats[dpy].yuvIndex = -1;
153    ctx->listStats[dpy].skipCount = 0;
154    ctx->listStats[dpy].needsAlphaScale = false;
155
156    for (size_t i = 0; i < list->numHwLayers; i++) {
157        hwc_layer_1_t const* layer = &list->hwLayers[i];
158        private_handle_t *hnd = (private_handle_t *)layer->handle;
159
160        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
161            continue;
162        //We disregard FB being skip for now! so the else if
163        } else if (isSkipLayer(&list->hwLayers[i])) {
164            ctx->listStats[dpy].skipCount++;
165        }
166
167        if(!ctx->listStats[dpy].needsAlphaScale)
168            ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
169
170        if (UNLIKELY(isYuvBuffer(hnd))) {
171            ctx->listStats[dpy].yuvCount++;
172            ctx->listStats[dpy].yuvIndex = i;
173        }
174    }
175}
176
177
178static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
179        float& rightCutRatio, float& bottomCutRatio, int orient) {
180    if(orient & HAL_TRANSFORM_FLIP_H) {
181        swap(leftCutRatio, rightCutRatio);
182    }
183    if(orient & HAL_TRANSFORM_FLIP_V) {
184        swap(topCutRatio, bottomCutRatio);
185    }
186    if(orient & HAL_TRANSFORM_ROT_90) {
187        //Anti clock swapping
188        float tmpCutRatio = leftCutRatio;
189        leftCutRatio = topCutRatio;
190        topCutRatio = rightCutRatio;
191        rightCutRatio = bottomCutRatio;
192        bottomCutRatio = tmpCutRatio;
193    }
194}
195
196bool isSecuring(hwc_context_t* ctx) {
197    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
198       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
199        ctx->mSecuring) {
200        return true;
201    }
202    return false;
203}
204
205
206//Crops source buffer against destination and FB boundaries
207void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
208        const int fbWidth, const int fbHeight, int orient) {
209    int& crop_l = crop.left;
210    int& crop_t = crop.top;
211    int& crop_r = crop.right;
212    int& crop_b = crop.bottom;
213    int crop_w = crop.right - crop.left;
214    int crop_h = crop.bottom - crop.top;
215
216    int& dst_l = dst.left;
217    int& dst_t = dst.top;
218    int& dst_r = dst.right;
219    int& dst_b = dst.bottom;
220    int dst_w = abs(dst.right - dst.left);
221    int dst_h = abs(dst.bottom - dst.top);
222
223    float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
224            bottomCutRatio = 0.0f;
225
226    if(dst_l < 0) {
227        leftCutRatio = (float)(0.0f - dst_l) / (float)dst_w;
228        dst_l = 0;
229    }
230    if(dst_r > fbWidth) {
231        rightCutRatio = (float)(dst_r - fbWidth) / (float)dst_w;
232        dst_r = fbWidth;
233    }
234    if(dst_t < 0) {
235        topCutRatio = (float)(0 - dst_t) / (float)dst_h;
236        dst_t = 0;
237    }
238    if(dst_b > fbHeight) {
239        bottomCutRatio = (float)(dst_b - fbHeight) / (float)dst_h;
240        dst_b = fbHeight;
241    }
242
243    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
244    crop_l += crop_w * leftCutRatio;
245    crop_t += crop_h * topCutRatio;
246    crop_r -= crop_w * rightCutRatio;
247    crop_b -= crop_h * bottomCutRatio;
248}
249
250bool isExternalActive(hwc_context_t* ctx) {
251    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
252}
253
254int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy) {
255    int ret = 0;
256    struct mdp_buf_sync data;
257    int acquireFd[MAX_NUM_LAYERS];
258    int count = 0;
259    int releaseFd = -1;
260    int fbFd = -1;
261    bool swapzero = false;
262    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
263    data.acq_fen_fd = acquireFd;
264    data.rel_fen_fd = &releaseFd;
265    char property[PROPERTY_VALUE_MAX];
266    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
267        if(atoi(property) == 0)
268            swapzero = true;
269    }
270
271    //Accumulate acquireFenceFds
272    for(uint32_t i = 0; i < list->numHwLayers; i++) {
273        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
274            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) &&
275            list->hwLayers[i].acquireFenceFd != -1 ){
276            if(UNLIKELY(swapzero))
277                acquireFd[count++] = -1;
278            else
279                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
280        }
281    }
282
283    data.acq_fen_fd_cnt = count;
284    fbFd = ctx->dpyAttr[dpy].fd;
285
286    //Waits for acquire fences, returns a release fence
287    if(LIKELY(!swapzero))
288        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
289    if(ret < 0) {
290        ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
291                strerror(errno));
292    }
293
294    for(uint32_t i = 0; i < list->numHwLayers; i++) {
295        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
296            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET)) {
297            //Close the acquireFenceFds
298            if(list->hwLayers[i].acquireFenceFd > 0) {
299                close(list->hwLayers[i].acquireFenceFd);
300                list->hwLayers[i].acquireFenceFd = -1;
301            }
302            //Populate releaseFenceFds.
303            if(UNLIKELY(swapzero))
304                list->hwLayers[i].releaseFenceFd = -1;
305            else
306                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
307        }
308    }
309    if(UNLIKELY(swapzero)){
310        list->retireFenceFd = -1;
311        close(releaseFd);
312    } else {
313        list->retireFenceFd = releaseFd;
314    }
315    return ret;
316}
317
318void LayerCache::resetLayerCache(int num) {
319    for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
320        hnd[i] = NULL;
321    }
322    numHwLayers = num;
323}
324
325void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
326
327    int numFbLayers = 0;
328    int numCacheableLayers = 0;
329
330    canUseLayerCache = false;
331    //Bail if geometry changed or num of layers changed
332    if(list->flags & HWC_GEOMETRY_CHANGED ||
333       list->numHwLayers != numHwLayers ) {
334        resetLayerCache(list->numHwLayers);
335        return;
336    }
337
338    for(uint32_t i = 0; i < list->numHwLayers; i++) {
339        //Bail on skip layers
340        if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
341            resetLayerCache(list->numHwLayers);
342            return;
343        }
344
345        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
346            numFbLayers++;
347            if(hnd[i] == NULL) {
348                hnd[i] = list->hwLayers[i].handle;
349            } else if (hnd[i] ==
350                       list->hwLayers[i].handle) {
351                numCacheableLayers++;
352            } else {
353                hnd[i] = NULL;
354                return;
355            }
356        } else {
357            hnd[i] = NULL;
358        }
359    }
360    if(numFbLayers == numCacheableLayers)
361        canUseLayerCache = true;
362
363    //XXX: The marking part is separate, if MDP comp wants
364    // to use it in the future. Right now getting MDP comp
365    // to use this is more trouble than it is worth.
366    markCachedLayersAsOverlay(list);
367}
368
369void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
370    //This optimization only works if ALL the layer handles
371    //that were on the framebuffer didn't change.
372    if(canUseLayerCache){
373        for(uint32_t i = 0; i < list->numHwLayers; i++) {
374            if (list->hwLayers[i].handle &&
375                list->hwLayers[i].handle == hnd[i] &&
376                list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
377            {
378                list->hwLayers[i].compositionType = HWC_OVERLAY;
379            }
380        }
381    }
382
383}
384
385};//namespace
386