1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012-2014, 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#include <fcntl.h>
21#include <errno.h>
22
23#include <cutils/log.h>
24#include <overlayWriteback.h>
25#include "hwc_utils.h"
26#include "hwc_fbupdate.h"
27#include "hwc_mdpcomp.h"
28#include "hwc_dump_layers.h"
29#include "hwc_copybit.h"
30#include "hwc_virtual.h"
31#include "sync/sync.h"
32#include <utils/Trace.h>
33
34#define HWCVIRTUAL_LOG 0
35
36using namespace qhwc;
37using namespace overlay;
38
39bool HWCVirtualVDS::sVDDumpEnabled = false;
40
41void HWCVirtualVDS::init(hwc_context_t *ctx) {
42    const int dpy = HWC_DISPLAY_VIRTUAL;
43    mScalingWidth = 0, mScalingHeight = 0;
44    initCompositionResources(ctx, dpy);
45
46    if(ctx->mFBUpdate[dpy])
47        ctx->mFBUpdate[dpy]->reset();
48    if(ctx->mMDPComp[dpy])
49        ctx->mMDPComp[dpy]->reset();
50}
51
52void HWCVirtualVDS::destroy(hwc_context_t *ctx, size_t /*numDisplays*/,
53                       hwc_display_contents_1_t** displays) {
54    int dpy = HWC_DISPLAY_VIRTUAL;
55
56    //Cleanup virtual display objs, since there is no explicit disconnect
57    if(ctx->dpyAttr[dpy].connected && (displays[dpy] == NULL)) {
58        ctx->dpyAttr[dpy].connected = false;
59        ctx->dpyAttr[dpy].isPause = false;
60
61        destroyCompositionResources(ctx, dpy);
62
63        // signal synclock to indicate successful wfd teardown
64        ctx->mWfdSyncLock.lock();
65        ctx->mWfdSyncLock.signal();
66        ctx->mWfdSyncLock.unlock();
67    }
68}
69
70int HWCVirtualVDS::prepare(hwc_composer_device_1 *dev,
71        hwc_display_contents_1_t *list) {
72    ATRACE_CALL();
73    //XXX: Fix when framework support is added
74    hwc_context_t* ctx = (hwc_context_t*)(dev);
75    const int dpy = HWC_DISPLAY_VIRTUAL;
76
77    if (list && list->outbuf && list->numHwLayers > 0) {
78        reset_layer_prop(ctx, dpy, (int)list->numHwLayers - 1);
79        uint32_t last = (uint32_t)list->numHwLayers - 1;
80        hwc_layer_1_t *fbLayer = &list->hwLayers[last];
81        int fbWidth = 0, fbHeight = 0;
82        getLayerResolution(fbLayer, fbWidth, fbHeight);
83        ctx->dpyAttr[dpy].xres = fbWidth;
84        ctx->dpyAttr[dpy].yres = fbHeight;
85
86        if(ctx->dpyAttr[dpy].connected == false) {
87            ctx->dpyAttr[dpy].connected = true;
88            ctx->dpyAttr[dpy].isPause = false;
89            // We set the vsync period to the primary refresh rate, leaving
90            // it up to the consumer to decide how fast to consume frames.
91            ctx->dpyAttr[dpy].vsync_period
92                              = ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period;
93            init(ctx);
94            // Do one padding round for cases where primary has all pipes
95            // The virtual composition falls back to GPU in such cases.
96            ctx->isPaddingRound = true;
97        }
98        if(!ctx->dpyAttr[dpy].isPause) {
99            ctx->dpyAttr[dpy].isConfiguring = false;
100            ctx->dpyAttr[dpy].fd = Writeback::getInstance()->getFbFd();
101            private_handle_t *ohnd = (private_handle_t *)list->outbuf;
102
103            setMDPScalingMode(ctx, ohnd, dpy);
104
105            mScalingWidth = getWidth(ohnd);
106            mScalingHeight = getHeight(ohnd);
107
108            Writeback::getInstance()->configureDpyInfo(mScalingWidth,
109                                                        mScalingHeight);
110            setListStats(ctx, list, dpy);
111
112            if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
113                const int fbZ = 0;
114                if(not ctx->mFBUpdate[dpy]->prepareAndValidate(ctx, list, fbZ))
115                {
116                    ctx->mOverlay->clear(dpy);
117                    ctx->mLayerRotMap[dpy]->clear();
118                }
119            }
120        } else {
121            /* Virtual Display is in Pause state.
122             * Mark all application layers as OVERLAY so that
123             * GPU will not compose.
124             */
125            Writeback::getInstance(); //Ensure that WB is active during pause
126            for(size_t i = 0 ;i < (size_t)(list->numHwLayers - 1); i++) {
127                hwc_layer_1_t *layer = &list->hwLayers[i];
128                layer->compositionType = HWC_OVERLAY;
129            }
130        }
131    }
132    return 0;
133}
134
135int HWCVirtualVDS::set(hwc_context_t *ctx, hwc_display_contents_1_t *list) {
136    ATRACE_CALL();
137    int ret = 0;
138    const int dpy = HWC_DISPLAY_VIRTUAL;
139
140    if (list && list->outbuf && list->numHwLayers > 0) {
141        uint32_t last = (uint32_t)list->numHwLayers - 1;
142        hwc_layer_1_t *fbLayer = &list->hwLayers[last];
143
144        if(ctx->dpyAttr[dpy].connected
145                && (!ctx->dpyAttr[dpy].isPause))
146        {
147            private_handle_t *ohnd = (private_handle_t *)list->outbuf;
148            int format = ohnd->format;
149            if (format == HAL_PIXEL_FORMAT_RGBA_8888)
150                format = HAL_PIXEL_FORMAT_RGBX_8888;
151            Writeback::getInstance()->setOutputFormat(
152                                    utils::getMdpFormat(format));
153
154            // Configure WB secure mode based on output buffer handle
155            if(! Writeback::getInstance()->setSecure(isSecureBuffer(ohnd)))
156            {
157                ALOGE("Failed to set WB secure mode: %d for virtual display",
158                    isSecureBuffer(ohnd));
159                return false;
160            }
161
162            int fd = -1; //FenceFD from the Copybit
163            hwc_sync(ctx, list, dpy, fd);
164
165            // Dump the layers for virtual
166            if(ctx->mHwcDebug[dpy])
167                ctx->mHwcDebug[dpy]->dumpLayers(list);
168
169            if (!ctx->mMDPComp[dpy]->draw(ctx, list)) {
170                ALOGE("%s: MDPComp draw failed", __FUNCTION__);
171                ret = -1;
172            }
173            // We need an FB layer handle check to cater for this usecase:
174            // Video is playing in landscape on primary, then launch
175            // ScreenRecord app.
176            // In this scenario, the first VDS draw call will have HWC
177            // composition and VDS does nit involve GPU to get eglSwapBuffer
178            // to get valid fb handle.
179            if (fbLayer->handle && !ctx->mFBUpdate[dpy]->draw(ctx,
180                        (private_handle_t *)fbLayer->handle)) {
181                ALOGE("%s: FBUpdate::draw fail!", __FUNCTION__);
182                ret = -1;
183            }
184
185            Writeback::getInstance()->queueBuffer(ohnd->fd,
186                                        (uint32_t)ohnd->offset);
187            if(!Overlay::displayCommit(ctx->dpyAttr[dpy].fd)) {
188                ALOGE("%s: display commit fail!", __FUNCTION__);
189                ret = -1;
190            }
191
192            if(sVDDumpEnabled) {
193                char bufferName[128];
194                // Dumping frame buffer
195                sync_wait(fbLayer->acquireFenceFd, 1000);
196                snprintf(bufferName, sizeof(bufferName), "vds.fb");
197                dumpBuffer((private_handle_t *)fbLayer->handle, bufferName);
198                // Dumping WB output for non-secure session
199                if(!isSecureBuffer(ohnd)) {
200                    sync_wait(list->retireFenceFd, 1000);
201                    snprintf(bufferName, sizeof(bufferName), "vds.wb");
202                    dumpBuffer(ohnd, bufferName);
203                }
204            }
205        } else if(list->outbufAcquireFenceFd >= 0) {
206            //If we dont handle the frame, set retireFenceFd to outbufFenceFd,
207            //which will make sure, the framework waits on it and closes it.
208            //The other way is to wait on outbufFenceFd ourselves, close it and
209            //set retireFenceFd to -1. Since we want hwc to be async, choosing
210            //the former.
211            //Also dup because, the closeAcquireFds() will close the outbufFence
212            list->retireFenceFd = dup(list->outbufAcquireFenceFd);
213        }
214    }
215
216    closeAcquireFds(list);
217    return ret;
218}
219
220/* We set scaling mode on the VD if the output handle width and height
221   differs from the virtual frame buffer width and height. */
222void HWCVirtualVDS::setMDPScalingMode(hwc_context_t* ctx,
223        private_handle_t* ohnd, int dpy) {
224    bool scalingMode = false;
225    int fbWidth = ctx->dpyAttr[dpy].xres;
226    int fbHeight = ctx->dpyAttr[dpy].yres;
227    int alW = 0, alH = 0;
228    getBufferSizeAndDimensions(fbWidth, fbHeight, ohnd->format, alW, alH);
229    if((getWidth(ohnd) != alW) || (getHeight(ohnd) != alH)) {
230        scalingMode = true;
231    }
232    ctx->dpyAttr[dpy].mMDPScalingMode = scalingMode;
233
234    ALOGD_IF(HWCVIRTUAL_LOG, "%s fb(%dx%d) outputBuffer(%dx%d) scalingMode=%d",
235            __FUNCTION__, alW, alH,
236            getWidth(ohnd), getHeight(ohnd), scalingMode);
237}
238