CameraService: Use SCHED_FIFO for request queue thread in HFR
- Move SchedulingPolicyService from audioservice to mediautils
- When starting up a high speed stream config, set request queue thread
to SCHED_FIFO using SchedulingPolicyService
Bug: 24227252
Change-Id: I224b59142bd111caf563779f55cddd62385b9bac
diff --git a/media/utils/Android.mk b/media/utils/Android.mk
index dfadbc8..54d22b1 100644
--- a/media/utils/Android.mk
+++ b/media/utils/Android.mk
@@ -18,6 +18,8 @@
LOCAL_SRC_FILES := \
BatteryNotifier.cpp \
+ ISchedulingPolicyService.cpp \
+ SchedulingPolicyService.cpp
LOCAL_SHARED_LIBRARIES := \
libbinder \
diff --git a/services/audioflinger/ISchedulingPolicyService.cpp b/media/utils/ISchedulingPolicyService.cpp
similarity index 100%
rename from services/audioflinger/ISchedulingPolicyService.cpp
rename to media/utils/ISchedulingPolicyService.cpp
diff --git a/services/audioflinger/ISchedulingPolicyService.h b/media/utils/ISchedulingPolicyService.h
similarity index 100%
rename from services/audioflinger/ISchedulingPolicyService.h
rename to media/utils/ISchedulingPolicyService.h
diff --git a/services/audioflinger/SchedulingPolicyService.cpp b/media/utils/SchedulingPolicyService.cpp
similarity index 97%
rename from services/audioflinger/SchedulingPolicyService.cpp
rename to media/utils/SchedulingPolicyService.cpp
index 70a3f1a..17ee9bc 100644
--- a/services/audioflinger/SchedulingPolicyService.cpp
+++ b/media/utils/SchedulingPolicyService.cpp
@@ -20,7 +20,7 @@
#include <binder/IServiceManager.h>
#include <utils/Mutex.h>
#include "ISchedulingPolicyService.h"
-#include "SchedulingPolicyService.h"
+#include "mediautils/SchedulingPolicyService.h"
namespace android {
diff --git a/services/audioflinger/SchedulingPolicyService.h b/media/utils/include/mediautils/SchedulingPolicyService.h
similarity index 100%
rename from services/audioflinger/SchedulingPolicyService.h
rename to media/utils/include/mediautils/SchedulingPolicyService.h
diff --git a/services/audioflinger/Android.mk b/services/audioflinger/Android.mk
index debcdf9..9b4ba79 100644
--- a/services/audioflinger/Android.mk
+++ b/services/audioflinger/Android.mk
@@ -3,17 +3,6 @@
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
- ISchedulingPolicyService.cpp \
- SchedulingPolicyService.cpp
-
-# FIXME Move this library to frameworks/native
-LOCAL_MODULE := libscheduling_policy
-
-include $(BUILD_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
ServiceUtilities.cpp
# FIXME Move this library to frameworks/native
@@ -64,10 +53,10 @@
libeffects \
libpowermanager \
libserviceutility \
- libsonic
+ libsonic \
+ libmediautils
LOCAL_STATIC_LIBRARIES := \
- libscheduling_policy \
libcpustats \
libmedia_helper
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 5bd9149..f586291 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -60,7 +60,7 @@
#include "FastMixer.h"
#include "FastCapture.h"
#include "ServiceUtilities.h"
-#include "SchedulingPolicyService.h"
+#include "mediautils/SchedulingPolicyService.h"
#ifdef ADD_BATTERY_DATA
#include <media/IMediaPlayerService.h>
diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index e8ef24e..45900c4 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -53,7 +53,7 @@
device3/StatusTracker.cpp \
gui/RingBufferConsumer.cpp \
utils/CameraTraces.cpp \
- utils/AutoConditionLock.cpp \
+ utils/AutoConditionLock.cpp
LOCAL_SHARED_LIBRARIES:= \
libui \
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 433a745..1a3a770 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -44,6 +44,7 @@
#include <utils/Timers.h>
#include "utils/CameraTraces.h"
+#include "mediautils/SchedulingPolicyService.h"
#include "device3/Camera3Device.h"
#include "device3/Camera3OutputStream.h"
#include "device3/Camera3InputStream.h"
@@ -1766,6 +1767,21 @@
// across configure_streams() calls
mRequestThread->configurationComplete();
+ // Boost priority of request thread for high speed recording to SCHED_FIFO
+ if (mIsConstrainedHighSpeedConfiguration) {
+ pid_t requestThreadTid = mRequestThread->getTid();
+ res = requestPriority(getpid(), requestThreadTid,
+ kConstrainedHighSpeedThreadPriority, true);
+ if (res != OK) {
+ ALOGW("Can't set realtime priority for request processing thread: %s (%d)",
+ strerror(-res), res);
+ } else {
+ ALOGD("Set real time priority for request queue thread (tid %d)", requestThreadTid);
+ }
+ } else {
+ // TODO: Set/restore normal priority for normal use cases
+ }
+
// Update device state
mNeedConfig = false;
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index 9d3c533..402cb1d 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -161,6 +161,8 @@
static const nsecs_t kActiveTimeout = 500000000; // 500 ms
static const size_t kInFlightWarnLimit = 20;
static const size_t kInFlightWarnLimitHighSpeed = 256; // batch size 32 * pipe depth 8
+ // SCHED_FIFO priority for request submission thread in HFR mode
+ static const int kConstrainedHighSpeedThreadPriority = 3;
struct RequestTrigger;
// minimal jpeg buffer size: 256KB + blob header
