ae823e7735
-- numHwLayers==1 means that there is only the FB_TARGET which HWC shouldn't draw. Also check for blank in set. Checking for this in prepare prevents us from acquiring pipes. -- add null check for private handle -- print out vsync timestamp data on error bug: 7274417 related-to-bug: 7288769 Change-Id: I8dae0d0748c5226fdc33ed8f5cc5259835dec2de Signed-off-by: Iliyan Malchev <malchev@google.com>
135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012, Code Aurora Forum. 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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// WARNING : Excessive logging, if VSYNC_DEBUG enabled
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#define VSYNC_DEBUG 0
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#include <utils/Log.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/msm_mdp.h>
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#include <sys/resource.h>
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#include <sys/prctl.h>
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#include "hwc_utils.h"
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#include "string.h"
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#include "external.h"
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namespace qhwc {
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static void *vsync_loop(void *param)
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{
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const char* vsync_timestamp_fb0 = "/sys/class/graphics/fb0/vsync_event";
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const char* vsync_timestamp_fb1 = "/sys/class/graphics/fb1/vsync_event";
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int dpy = HWC_DISPLAY_PRIMARY;
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hwc_context_t * ctx = reinterpret_cast<hwc_context_t *>(param);
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char thread_name[64] = "hwcVsyncThread";
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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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android::PRIORITY_MORE_FAVORABLE);
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static char vdata[PAGE_SIZE];
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uint64_t cur_timestamp=0;
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ssize_t len = -1;
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int fd_timestamp = -1;
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int ret = 0;
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bool fb1_vsync = false;
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bool enabled = false;
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/* Currently read vsync timestamp from drivers
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e.g. VSYNC=41800875994
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*/
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do {
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pthread_mutex_lock(&ctx->vstate.lock);
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while (ctx->vstate.enable == false) {
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if(enabled) {
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int e = 0;
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if(ioctl(ctx->dpyAttr[dpy].fd, MSMFB_OVERLAY_VSYNC_CTRL,
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&e) < 0) {
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ALOGE("%s: vsync control failed. Dpy=%d, enabled=%d : %s",
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__FUNCTION__, dpy, enabled, strerror(errno));
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ret = -errno;
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}
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enabled = false;
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}
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pthread_cond_wait(&ctx->vstate.cond, &ctx->vstate.lock);
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}
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pthread_mutex_unlock(&ctx->vstate.lock);
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if (!enabled) {
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int e = 1;
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if(ioctl(ctx->dpyAttr[dpy].fd, MSMFB_OVERLAY_VSYNC_CTRL,
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&e) < 0) {
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ALOGE("%s: vsync control failed. Dpy=%d, enabled=%d : %s",
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__FUNCTION__, dpy, enabled, strerror(errno));
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ret = -errno;
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}
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enabled = true;
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}
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fd_timestamp = open(vsync_timestamp_fb0, O_RDONLY);
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if (fd_timestamp < 0) {
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ALOGE ("FATAL:%s:not able to open file:%s, %s", __FUNCTION__,
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(fb1_vsync) ? vsync_timestamp_fb1 : vsync_timestamp_fb0,
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strerror(errno));
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return NULL;
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}
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// Open success - read now
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len = read(fd_timestamp, vdata, PAGE_SIZE);
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if (len < 0){
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ALOGE ("FATAL:%s:not able to read file:%s, %s", __FUNCTION__,
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vsync_timestamp_fb0, strerror(errno));
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close (fd_timestamp);
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return NULL;
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}
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// extract timestamp
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const char *str = vdata;
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if (!strncmp(str, "VSYNC=", strlen("VSYNC="))) {
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cur_timestamp = strtoull(str + strlen("VSYNC="), NULL, 0);
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} else {
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ALOGE ("FATAL: %s: vsync timestamp not in correct format: [%s]",
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__FUNCTION__,
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str);
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}
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// send timestamp to HAL
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ALOGD_IF (VSYNC_DEBUG, "%s: timestamp %llu sent to HWC for %s",
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__FUNCTION__, cur_timestamp, "fb0");
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ctx->proc->vsync(ctx->proc, dpy, cur_timestamp);
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close (fd_timestamp);
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} while (true);
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return NULL;
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}
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void init_vsync_thread(hwc_context_t* ctx)
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{
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pthread_t vsync_thread;
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ALOGI("Initializing VSYNC Thread");
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pthread_create(&vsync_thread, NULL, vsync_loop, (void*) ctx);
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}
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}; //namespace
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