hwc_utils.cpp revision 333c29be51cb3233a53a0efa4990bf8bd8001842 
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    ctx->mLayerCache = new LayerCache();
64    MDPComp::init(ctx);
65
66    pthread_mutex_init(&(ctx->vstate.lock), NULL);
67    pthread_cond_init(&(ctx->vstate.cond), NULL);
68    ctx->vstate.enable = false;
69
70    ALOGI("Initializing Qualcomm Hardware Composer");
71    ALOGI("MDP version: %d", ctx->mMDP.version);
72}
73
74void closeContext(hwc_context_t *ctx)
75{
76    if(ctx->mOverlay) {
77        delete ctx->mOverlay;
78        ctx->mOverlay = NULL;
79    }
80
81    if(ctx->mFbDev) {
82        framebuffer_close(ctx->mFbDev);
83        ctx->mFbDev = NULL;
84        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
85        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
86    }
87
88    if(ctx->mExtDisplay) {
89        delete ctx->mExtDisplay;
90        ctx->mExtDisplay = NULL;
91    }
92
93    pthread_mutex_destroy(&(ctx->vstate.lock));
94    pthread_cond_destroy(&(ctx->vstate.cond));
95}
96
97
98void dumpsys_log(android::String8& buf, const char* fmt, ...)
99{
100    va_list varargs;
101    va_start(varargs, fmt);
102    buf.appendFormatV(fmt, varargs);
103    va_end(varargs);
104}
105
106static inline bool isAlphaScaled(hwc_layer_1_t const* layer) {
107    int dst_w, dst_h, src_w, src_h;
108
109    hwc_rect_t displayFrame  = layer->displayFrame;
110    hwc_rect_t sourceCrop = layer->sourceCrop;
111
112    dst_w = displayFrame.right - displayFrame.left;
113    dst_h = displayFrame.bottom - displayFrame.top;
114
115    src_w = sourceCrop.right - sourceCrop.left;
116    src_h = sourceCrop.bottom - sourceCrop.top;
117
118    if(((src_w != dst_w) || (src_h != dst_h))) {
119        if(layer->blending != HWC_BLENDING_NONE)
120            return true;
121    }
122    return false;
123}
124
125void setListStats(hwc_context_t *ctx,
126        const hwc_display_contents_1_t *list, int dpy) {
127
128    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
129    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
130    ctx->listStats[dpy].yuvCount = 0;
131    ctx->listStats[dpy].yuvIndex = -1;
132    ctx->listStats[dpy].skipCount = 0;
133    ctx->listStats[dpy].needsAlphaScale = false;
134
135    for (size_t i = 0; i < list->numHwLayers; i++) {
136        hwc_layer_1_t const* layer = &list->hwLayers[i];
137        private_handle_t *hnd = (private_handle_t *)layer->handle;
138
139        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
140            continue;
141        //We disregard FB being skip for now! so the else if
142        } else if (isSkipLayer(&list->hwLayers[i])) {
143            ctx->listStats[dpy].skipCount++;
144        }
145
146        if(!ctx->listStats[dpy].needsAlphaScale)
147            ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
148
149        if (UNLIKELY(isYuvBuffer(hnd))) {
150            ctx->listStats[dpy].yuvCount++;
151            ctx->listStats[dpy].yuvIndex = i;
152        }
153    }
154}
155
156
157static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
158        float& rightCutRatio, float& bottomCutRatio, int orient) {
159    if(orient & HAL_TRANSFORM_FLIP_H) {
160        swap(leftCutRatio, rightCutRatio);
161    }
162    if(orient & HAL_TRANSFORM_FLIP_V) {
163        swap(topCutRatio, bottomCutRatio);
164    }
165    if(orient & HAL_TRANSFORM_ROT_90) {
166        //Anti clock swapping
167        float tmpCutRatio = leftCutRatio;
168        leftCutRatio = topCutRatio;
169        topCutRatio = rightCutRatio;
170        rightCutRatio = bottomCutRatio;
171        bottomCutRatio = tmpCutRatio;
172    }
173}
174
175bool isSecuring(hwc_context_t* ctx) {
176    if((ctx->mMDP.version < qdutils::MDSS_V5) &&
177       (ctx->mMDP.version > qdutils::MDP_V3_0) &&
178        ctx->mSecuring) {
179        return true;
180    }
181    return false;
182}
183
184
185//Crops source buffer against destination and FB boundaries
186void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
187        const int fbWidth, const int fbHeight, int orient) {
188    int& crop_l = crop.left;
189    int& crop_t = crop.top;
190    int& crop_r = crop.right;
191    int& crop_b = crop.bottom;
192    int crop_w = crop.right - crop.left;
193    int crop_h = crop.bottom - crop.top;
194
195    int& dst_l = dst.left;
196    int& dst_t = dst.top;
197    int& dst_r = dst.right;
198    int& dst_b = dst.bottom;
199    int dst_w = abs(dst.right - dst.left);
200    int dst_h = abs(dst.bottom - dst.top);
201
202    float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
203            bottomCutRatio = 0.0f;
204
205    if(dst_l < 0) {
206        leftCutRatio = (float)(0.0f - dst_l) / (float)dst_w;
207        dst_l = 0;
208    }
209    if(dst_r > fbWidth) {
210        rightCutRatio = (float)(dst_r - fbWidth) / (float)dst_w;
211        dst_r = fbWidth;
212    }
213    if(dst_t < 0) {
214        topCutRatio = (float)(0 - dst_t) / (float)dst_h;
215        dst_t = 0;
216    }
217    if(dst_b > fbHeight) {
218        bottomCutRatio = (float)(dst_b - fbHeight) / (float)dst_h;
219        dst_b = fbHeight;
220    }
221
222    calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
223    crop_l += crop_w * leftCutRatio;
224    crop_t += crop_h * topCutRatio;
225    crop_r -= crop_w * rightCutRatio;
226    crop_b -= crop_h * bottomCutRatio;
227}
228
229bool isExternalActive(hwc_context_t* ctx) {
230    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
231}
232
233int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy) {
234    int ret = 0;
235    struct mdp_buf_sync data;
236    int acquireFd[MAX_NUM_LAYERS];
237    int count = 0;
238    int releaseFd = -1;
239    int fbFd = -1;
240    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
241    data.acq_fen_fd = acquireFd;
242    data.rel_fen_fd = &releaseFd;
243    //Accumulate acquireFenceFds
244    for(uint32_t i = 0; i < list->numHwLayers; i++) {
245        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
246            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) &&
247            list->hwLayers[i].acquireFenceFd != -1 ){
248            acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
249        }
250    }
251
252    data.acq_fen_fd_cnt = count;
253    fbFd = ctx->dpyAttr[dpy].fd;
254
255    //Waits for acquire fences, returns a release fence
256    ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
257    if(ret < 0) {
258        ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
259                strerror(errno));
260    }
261
262    for(uint32_t i = 0; i < list->numHwLayers; i++) {
263        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
264            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET)) {
265            //Close the acquireFenceFds
266            if(list->hwLayers[i].acquireFenceFd > 0) {
267                close(list->hwLayers[i].acquireFenceFd);
268                list->hwLayers[i].acquireFenceFd = -1;
269            }
270            //Populate releaseFenceFds.
271            list->hwLayers[i].releaseFenceFd = dup(releaseFd);
272        }
273    }
274    list->retireFenceFd = releaseFd;
275    return ret;
276}
277
278void LayerCache::resetLayerCache(int num) {
279    for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
280        hnd[i] = NULL;
281    }
282    numHwLayers = num;
283}
284
285void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
286
287    int numFbLayers = 0;
288    int numCacheableLayers = 0;
289
290    canUseLayerCache = false;
291    //Bail if geometry changed or num of layers changed
292    if(list->flags & HWC_GEOMETRY_CHANGED ||
293       list->numHwLayers != numHwLayers ) {
294        resetLayerCache(list->numHwLayers);
295        return;
296    }
297
298    for(uint32_t i = 0; i < list->numHwLayers; i++) {
299        //Bail on skip layers
300        if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
301            resetLayerCache(list->numHwLayers);
302            return;
303        }
304
305        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
306            numFbLayers++;
307            if(hnd[i] == NULL) {
308                hnd[i] = list->hwLayers[i].handle;
309            } else if (hnd[i] ==
310                       list->hwLayers[i].handle) {
311                numCacheableLayers++;
312            } else {
313                hnd[i] = NULL;
314                return;
315            }
316        } else {
317            hnd[i] = NULL;
318        }
319    }
320    if(numFbLayers == numCacheableLayers)
321        canUseLayerCache = true;
322
323    //XXX: The marking part is separate, if MDP comp wants
324    // to use it in the future. Right now getting MDP comp
325    // to use this is more trouble than it is worth.
326    markCachedLayersAsOverlay(list);
327}
328
329void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
330    //This optimization only works if ALL the layer handles
331    //that were on the framebuffer didn't change.
332    if(canUseLayerCache){
333        for(uint32_t i = 0; i < list->numHwLayers; i++) {
334            if (list->hwLayers[i].handle &&
335                list->hwLayers[i].handle == hnd[i] &&
336                list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
337            {
338                list->hwLayers[i].compositionType = HWC_OVERLAY;
339            }
340        }
341    }
342
343}
344
345};//namespace
346