hwc_utils.cpp revision 50ecfc494bed848dfde487e002863e0fbba5f711 
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 "mdp_version.h"
27#include "external.h"
28#include "QService.h"
29
30namespace qhwc {
31
32// Opens Framebuffer device
33static void openFramebufferDevice(hwc_context_t *ctx)
34{
35    hw_module_t const *module;
36    if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
37        framebuffer_open(module, &(ctx->mFbDev));
38        private_module_t* m = reinterpret_cast<private_module_t*>(
39                ctx->mFbDev->common.module);
40        //xres, yres may not be 32 aligned
41        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = m->finfo.line_length /
42                                                (m->info.xres/8);
43        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = m->info.xres;
44        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = m->info.yres;
45        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = ctx->mFbDev->xdpi;
46        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ctx->mFbDev->ydpi;
47        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period =
48                1000000000l / ctx->mFbDev->fps;
49        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = openFb(HWC_DISPLAY_PRIMARY);
50    }
51}
52
53void initContext(hwc_context_t *ctx)
54{
55    openFramebufferDevice(ctx);
56    overlay::Overlay::initOverlay();
57    ctx->mOverlay = overlay::Overlay::getInstance();
58    ctx->mQService = qService::QService::getInstance(ctx);
59    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
60    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
61    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
62    ctx->mExtDisplay = new ExternalDisplay(ctx);
63    for (uint32_t i = 0; i < HWC_NUM_DISPLAY_TYPES; i++)
64        ctx->mLayerCache[i] = new LayerCache();
65    MDPComp::init(ctx);
66
67    pthread_mutex_init(&(ctx->vstate.lock), NULL);
68    pthread_cond_init(&(ctx->vstate.cond), NULL);
69    ctx->vstate.enable = false;
70
71    ALOGI("Initializing Qualcomm Hardware Composer");
72    ALOGI("MDP version: %d", ctx->mMDP.version);
73}
74
75void closeContext(hwc_context_t *ctx)
76{
77    if(ctx->mOverlay) {
78        delete ctx->mOverlay;
79        ctx->mOverlay = NULL;
80    }
81
82    if(ctx->mFbDev) {
83        framebuffer_close(ctx->mFbDev);
84        ctx->mFbDev = NULL;
85        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
86        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
87    }
88
89    if(ctx->mExtDisplay) {
90        delete ctx->mExtDisplay;
91        ctx->mExtDisplay = NULL;
92    }
93
94    pthread_mutex_destroy(&(ctx->vstate.lock));
95    pthread_cond_destroy(&(ctx->vstate.cond));
96}
97
98
99void dumpsys_log(android::String8& buf, const char* fmt, ...)
100{
101    va_list varargs;
102    va_start(varargs, fmt);
103    buf.appendFormatV(fmt, varargs);
104    va_end(varargs);
105}
106
107static inline bool isAlphaScaled(hwc_layer_1_t const* layer) {
108    int dst_w, dst_h, src_w, src_h;
109
110    hwc_rect_t displayFrame  = layer->displayFrame;
111    hwc_rect_t sourceCrop = layer->sourceCrop;
112
113    dst_w = displayFrame.right - displayFrame.left;
114    dst_h = displayFrame.bottom - displayFrame.top;
115
116    src_w = sourceCrop.right - sourceCrop.left;
117    src_h = sourceCrop.bottom - sourceCrop.top;
118
119    if(((src_w != dst_w) || (src_h != dst_h))) {
120        if(layer->blending != HWC_BLENDING_NONE)
121            return true;
122    }
123    return false;
124}
125
126void setListStats(hwc_context_t *ctx,
127        const hwc_display_contents_1_t *list, int dpy) {
128
129    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
130    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
131    ctx->listStats[dpy].yuvCount = 0;
132    ctx->listStats[dpy].yuvIndex = -1;
133    ctx->listStats[dpy].skipCount = 0;
134    ctx->listStats[dpy].needsAlphaScale = false;
135
136    for (size_t i = 0; i < list->numHwLayers; i++) {
137        hwc_layer_1_t const* layer = &list->hwLayers[i];
138        private_handle_t *hnd = (private_handle_t *)layer->handle;
139
140        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
141            continue;
142        //We disregard FB being skip for now! so the else if
143        } else if (isSkipLayer(&list->hwLayers[i])) {
144            ctx->listStats[dpy].skipCount++;
145        }
146
147        if(!ctx->listStats[dpy].needsAlphaScale)
148            ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
149
150        if (UNLIKELY(isYuvBuffer(hnd))) {
151            ctx->listStats[dpy].yuvCount++;
152            ctx->listStats[dpy].yuvIndex = i;
153        }
154    }
155}
156
157
158static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
159        float& rightCutRatio, float& bottomCutRatio, int orient) {
160    if(orient & HAL_TRANSFORM_FLIP_H) {
161        swap(leftCutRatio, rightCutRatio);
162    }
163    if(orient & HAL_TRANSFORM_FLIP_V) {
164        swap(topCutRatio, bottomCutRatio);
165    }
166    if(orient & HAL_TRANSFORM_ROT_90) {
167        //Anti clock swapping
168        float tmpCutRatio = leftCutRatio;
169        leftCutRatio = topCutRatio;
170        topCutRatio = rightCutRatio;
171        rightCutRatio = bottomCutRatio;
172        bottomCutRatio = tmpCutRatio;
173    }
174}
175
176bool isSecuring(hwc_context_t* ctx) {
177    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
178       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
179        ctx->mSecuring) {
180        return true;
181    }
182    return false;
183}
184
185
186//Crops source buffer against destination and FB boundaries
187void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
188        const int fbWidth, const int fbHeight, int orient) {
189    int& crop_l = crop.left;
190    int& crop_t = crop.top;
191    int& crop_r = crop.right;
192    int& crop_b = crop.bottom;
193    int crop_w = crop.right - crop.left;
194    int crop_h = crop.bottom - crop.top;
195
196    int& dst_l = dst.left;
197    int& dst_t = dst.top;
198    int& dst_r = dst.right;
199    int& dst_b = dst.bottom;
200    int dst_w = abs(dst.right - dst.left);
201    int dst_h = abs(dst.bottom - dst.top);
202
203    float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
204            bottomCutRatio = 0.0f;
205
206    if(dst_l < 0) {
207        leftCutRatio = (float)(0.0f - dst_l) / (float)dst_w;
208        dst_l = 0;
209    }
210    if(dst_r > fbWidth) {
211        rightCutRatio = (float)(dst_r - fbWidth) / (float)dst_w;
212        dst_r = fbWidth;
213    }
214    if(dst_t < 0) {
215        topCutRatio = (float)(0 - dst_t) / (float)dst_h;
216        dst_t = 0;
217    }
218    if(dst_b > fbHeight) {
219        bottomCutRatio = (float)(dst_b - fbHeight) / (float)dst_h;
220        dst_b = fbHeight;
221    }
222
223    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
224    crop_l += crop_w * leftCutRatio;
225    crop_t += crop_h * topCutRatio;
226    crop_r -= crop_w * rightCutRatio;
227    crop_b -= crop_h * bottomCutRatio;
228}
229
230bool isExternalActive(hwc_context_t* ctx) {
231    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
232}
233
234int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy) {
235    int ret = 0;
236    struct mdp_buf_sync data;
237    int acquireFd[MAX_NUM_LAYERS];
238    int count = 0;
239    int releaseFd = -1;
240    int fbFd = -1;
241    bool swapzero = false;
242    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
243    data.acq_fen_fd = acquireFd;
244    data.rel_fen_fd = &releaseFd;
245    char property[PROPERTY_VALUE_MAX];
246    if(property_get("debug.egl.swapinterval", property, "1") > 0) {
247        if(atoi(property) == 0)
248            swapzero = true;
249    }
250
251    //Accumulate acquireFenceFds
252    for(uint32_t i = 0; i < list->numHwLayers; i++) {
253        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
254            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) &&
255            list->hwLayers[i].acquireFenceFd != -1 ){
256            if(UNLIKELY(swapzero))
257                acquireFd[count++] = -1;
258            else
259                acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
260        }
261    }
262
263    data.acq_fen_fd_cnt = count;
264    fbFd = ctx->dpyAttr[dpy].fd;
265
266    //Waits for acquire fences, returns a release fence
267    if(LIKELY(!swapzero))
268        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
269    if(ret < 0) {
270        ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
271                strerror(errno));
272    }
273
274    for(uint32_t i = 0; i < list->numHwLayers; i++) {
275        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
276            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET)) {
277            //Close the acquireFenceFds
278            if(list->hwLayers[i].acquireFenceFd > 0) {
279                close(list->hwLayers[i].acquireFenceFd);
280                list->hwLayers[i].acquireFenceFd = -1;
281            }
282            //Populate releaseFenceFds.
283            if(UNLIKELY(swapzero))
284                list->hwLayers[i].releaseFenceFd = -1;
285            else
286                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
287        }
288    }
289    if(UNLIKELY(swapzero)){
290        list->retireFenceFd = -1;
291        close(releaseFd);
292    } else {
293        list->retireFenceFd = releaseFd;
294    }
295    return ret;
296}
297
298void LayerCache::resetLayerCache(int num) {
299    for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
300        hnd[i] = NULL;
301    }
302    numHwLayers = num;
303}
304
305void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
306
307    int numFbLayers = 0;
308    int numCacheableLayers = 0;
309
310    canUseLayerCache = false;
311    //Bail if geometry changed or num of layers changed
312    if(list->flags & HWC_GEOMETRY_CHANGED ||
313       list->numHwLayers != numHwLayers ) {
314        resetLayerCache(list->numHwLayers);
315        return;
316    }
317
318    for(uint32_t i = 0; i < list->numHwLayers; i++) {
319        //Bail on skip layers
320        if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
321            resetLayerCache(list->numHwLayers);
322            return;
323        }
324
325        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
326            numFbLayers++;
327            if(hnd[i] == NULL) {
328                hnd[i] = list->hwLayers[i].handle;
329            } else if (hnd[i] ==
330                       list->hwLayers[i].handle) {
331                numCacheableLayers++;
332            } else {
333                hnd[i] = NULL;
334                return;
335            }
336        } else {
337            hnd[i] = NULL;
338        }
339    }
340    if(numFbLayers == numCacheableLayers)
341        canUseLayerCache = true;
342
343    //XXX: The marking part is separate, if MDP comp wants
344    // to use it in the future. Right now getting MDP comp
345    // to use this is more trouble than it is worth.
346    markCachedLayersAsOverlay(list);
347}
348
349void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
350    //This optimization only works if ALL the layer handles
351    //that were on the framebuffer didn't change.
352    if(canUseLayerCache){
353        for(uint32_t i = 0; i < list->numHwLayers; i++) {
354            if (list->hwLayers[i].handle &&
355                list->hwLayers[i].handle == hnd[i] &&
356                list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
357            {
358                list->hwLayers[i].compositionType = HWC_OVERLAY;
359            }
360        }
361    }
362
363}
364
365};//namespace
366