1a8cda0b2c
Cleanup overlay for external from the draw thread. If done from the uevent thread, its possible that the object being used by draw thread is deleted by uevent thread. This also removes unnecessary side-effects where libexternal sets states in hwc, whereas, it could be set from hwc itself. There should be no need for libexternal to modify states in hwc. Bug: 7335863 (partial fix) Change-Id: If07483e640abae2ced2418e0d5c8f278f8c6ec33 Signed-off-by: Iliyan Malchev <malchev@google.com>
109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012, The Linux Foundation. All rights reserved.
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*
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* Not a Contribution, Apache license notifications and license are
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* retained for attribution purposes only.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define UEVENT_DEBUG 0
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#include <hardware_legacy/uevent.h>
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#include <utils/Log.h>
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#include <sys/resource.h>
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#include <sys/prctl.h>
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#include <string.h>
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#include <stdlib.h>
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#include "hwc_utils.h"
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#include "external.h"
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namespace qhwc {
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#define HWC_UEVENT_THREAD_NAME "hwcUeventThread"
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const char* MSMFB_HDMI_NODE = "fb1";
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static void handle_uevent(hwc_context_t* ctx, const char* udata, int len)
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{
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int vsync = 0;
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char* hdmi;
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int64_t timestamp = 0;
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const char *str = udata;
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if(!strcasestr(str, "@/devices/virtual/graphics/fb")) {
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ALOGD_IF(UEVENT_DEBUG, "%s: Not Ext Disp Event ", __FUNCTION__);
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return;
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}
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hdmi = strcasestr(str, MSMFB_HDMI_NODE);
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// parse HDMI events
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// The event will be of the form:
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// change@/devices/virtual/graphics/fb1 ACTION=change
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// DEVPATH=/devices/virtual/graphics/fb1
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// SUBSYSTEM=graphics HDCP_STATE=FAIL MAJOR=29
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// for now just parsing onlin/offline info is enough
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if (hdmi) {
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str = udata;
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int connected = -1; //some event other than online and offline .. e.g
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if(!(strncmp(str,"online@",strlen("online@")))) {
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//Disabled until SF calls unblank
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ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive = false;
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connected = 1;
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} else if(!(strncmp(str,"offline@",strlen("offline@")))) {
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//Disabled until SF calls unblank
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ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive = false;
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connected = 0;
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}
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if(connected != -1) { //either we got online or offline
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ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].connected = connected;
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ctx->mExtDisplay->setExternalDisplay(connected);
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ALOGD("%s sending hotplug: connected = %d", __FUNCTION__,connected);
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Locker::Autolock _l(ctx->mExtSetLock); //hwc comp could be on
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//TODO ideally should be done on "connected" not "online"
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ctx->proc->hotplug(ctx->proc, HWC_DISPLAY_EXTERNAL, connected);
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}
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}
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}
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static void *uevent_loop(void *param)
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{
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int len = 0;
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static char udata[PAGE_SIZE];
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hwc_context_t * ctx = reinterpret_cast<hwc_context_t *>(param);
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char thread_name[64] = HWC_UEVENT_THREAD_NAME;
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prctl(PR_SET_NAME, (unsigned long) &thread_name, 0, 0, 0);
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setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
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uevent_init();
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while(1) {
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len = uevent_next_event(udata, sizeof(udata) - 2);
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handle_uevent(ctx, udata, len);
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}
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return NULL;
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}
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void init_uevent_thread(hwc_context_t* ctx)
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{
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pthread_t uevent_thread;
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int ret;
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ALOGI("Initializing UEVENT Thread");
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ret = pthread_create(&uevent_thread, NULL, uevent_loop, (void*) ctx);
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if (ret) {
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ALOGE("%s: failed to create %s: %s", __FUNCTION__,
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HWC_UEVENT_THREAD_NAME, strerror(ret));
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}
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}
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}; //namespace
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