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am 7c292062: Merge "Process all display events in order"

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# Via Gerrit Code Review
* commit '7c2920625eb72216025aeb8ea8dce544df0eca36':
  Process all display events in order
This commit is contained in:
Jesse Hall
2013-02-07 17:41:50 -08:00
committed by Android Git Automerger
parent bc18fe851c 7c2920625e
commit c2edfa2b96
1 changed files with 23 additions and 19 deletions
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38
core/jni/android_view_DisplayEventReceiver.cpp
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@@ -62,7 +62,7 @@ private:
bool mWaitingForVsync; bool mWaitingForVsync;
virtual int handleEvent(int receiveFd, int events, void* data); virtual int handleEvent(int receiveFd, int events, void* data);
bool readLastVsyncMessage(nsecs_t* outTimestamp, int32_t* id, uint32_t* outCount); bool processPendingEvents(nsecs_t* outTimestamp, int32_t* id, uint32_t* outCount);
void dispatchVsync(nsecs_t timestamp, int32_t id, uint32_t count); void dispatchVsync(nsecs_t timestamp, int32_t id, uint32_t count);
void dispatchHotplug(nsecs_t timestamp, int32_t id, bool connected); void dispatchHotplug(nsecs_t timestamp, int32_t id, bool connected);
}; };
@@ -111,7 +111,7 @@ status_t NativeDisplayEventReceiver::scheduleVsync() {
nsecs_t vsyncTimestamp; nsecs_t vsyncTimestamp;
int32_t vsyncDisplayId; int32_t vsyncDisplayId;
uint32_t vsyncCount; uint32_t vsyncCount;
readLastVsyncMessage(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount); processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount);
status_t status = mReceiver.requestNextVsync(); status_t status = mReceiver.requestNextVsync();
if (status) { if (status) {
@@ -141,43 +141,47 @@ int NativeDisplayEventReceiver::handleEvent(int receiveFd, int events, void* dat
nsecs_t vsyncTimestamp; nsecs_t vsyncTimestamp;
int32_t vsyncDisplayId; int32_t vsyncDisplayId;
uint32_t vsyncCount; uint32_t vsyncCount;
if (!readLastVsyncMessage(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount)) { if (processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount)) {
ALOGV("receiver %p ~ Woke up but there was no vsync pulse!", this);
return 1; // keep the callback, did not obtain a vsync pulse
}
ALOGV("receiver %p ~ Vsync pulse: timestamp=%lld, id=%d, count=%d", ALOGV("receiver %p ~ Vsync pulse: timestamp=%lld, id=%d, count=%d",
this, vsyncTimestamp, vsyncDisplayId, vsyncCount); this, vsyncTimestamp, vsyncDisplayId, vsyncCount);
mWaitingForVsync = false; mWaitingForVsync = false;
dispatchVsync(vsyncTimestamp, vsyncDisplayId, vsyncCount); dispatchVsync(vsyncTimestamp, vsyncDisplayId, vsyncCount);
}
return 1; // keep the callback return 1; // keep the callback
} }
bool NativeDisplayEventReceiver::readLastVsyncMessage( bool NativeDisplayEventReceiver::processPendingEvents(
nsecs_t* outTimestamp, int32_t* outId, uint32_t* outCount) { nsecs_t* outTimestamp, int32_t* outId, uint32_t* outCount) {
bool gotVsync = false;
DisplayEventReceiver::Event buf[EVENT_BUFFER_SIZE]; DisplayEventReceiver::Event buf[EVENT_BUFFER_SIZE];
ssize_t n; ssize_t n;
while ((n = mReceiver.getEvents(buf, EVENT_BUFFER_SIZE)) > 0) { while ((n = mReceiver.getEvents(buf, EVENT_BUFFER_SIZE)) > 0) {
ALOGV("receiver %p ~ Read %d events.", this, int(n)); ALOGV("receiver %p ~ Read %d events.", this, int(n));
while (n-- > 0) { for (ssize_t i = 0; i < n; i++) {
const DisplayEventReceiver::Event& ev = buf[n]; const DisplayEventReceiver::Event& ev = buf[i];
if (ev.header.type == DisplayEventReceiver::DISPLAY_EVENT_VSYNC) { switch (ev.header.type) {
case DisplayEventReceiver::DISPLAY_EVENT_VSYNC:
// Later vsync events will just overwrite the info from earlier
// ones. That's fine, we only care about the most recent.
gotVsync = true;
*outTimestamp = ev.header.timestamp; *outTimestamp = ev.header.timestamp;
*outId = ev.header.id; *outId = ev.header.id;
*outCount = ev.vsync.count; *outCount = ev.vsync.count;
return true; // stop at last vsync in the buffer break;
} case DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG:
if (ev.header.type == DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG) {
dispatchHotplug(ev.header.timestamp, ev.header.id, ev.hotplug.connected); dispatchHotplug(ev.header.timestamp, ev.header.id, ev.hotplug.connected);
break;
default:
ALOGW("receiver %p ~ ignoring unknown event type %#x", this, ev.header.type);
break;
} }
} }
} }
if (n < 0) { if (n < 0) {
ALOGW("Failed to get events from display event receiver, status=%d", status_t(n)); ALOGW("Failed to get events from display event receiver, status=%d", status_t(n));
} }
return false; return gotVsync;
} }
void NativeDisplayEventReceiver::dispatchVsync(nsecs_t timestamp, int32_t id, uint32_t count) { void NativeDisplayEventReceiver::dispatchVsync(nsecs_t timestamp, int32_t id, uint32_t count) {