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Diffstat (limited to 'audio/effect/all-versions/default/Effect.cpp')
-rw-r--r--audio/effect/all-versions/default/Effect.cpp238
1 files changed, 224 insertions, 14 deletions
diff --git a/audio/effect/all-versions/default/Effect.cpp b/audio/effect/all-versions/default/Effect.cpp
index 3baafc9343..87e1ab7a7d 100644
--- a/audio/effect/all-versions/default/Effect.cpp
+++ b/audio/effect/all-versions/default/Effect.cpp
@@ -25,8 +25,11 @@
#define ATRACE_TAG ATRACE_TAG_AUDIO
#include <HidlUtils.h>
#include <android/log.h>
+#include <cutils/properties.h>
#include <media/EffectsFactoryApi.h>
#include <mediautils/ScopedStatistics.h>
+#include <sys/syscall.h>
+#include <system/audio_effects/effect_spatializer.h>
#include <util/EffectUtils.h>
#include <utils/Trace.h>
@@ -47,6 +50,160 @@ using ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION::implementati
namespace {
+/**
+ * Some basic scheduling tools.
+ */
+namespace scheduler {
+
+int getCpu() {
+ return sched_getcpu();
+}
+
+uint64_t getAffinity(pid_t tid) {
+ cpu_set_t set;
+ CPU_ZERO_S(sizeof(set), &set);
+
+ if (sched_getaffinity(tid, sizeof(set), &set)) {
+ ALOGW("%s: for tid:%d returning 0, failed %s", __func__, tid, strerror(errno));
+ return 0;
+ }
+ const int count = CPU_COUNT_S(sizeof(set), &set);
+ uint64_t mask = 0;
+ for (int i = 0; i < CPU_SETSIZE; ++i) {
+ if (CPU_ISSET_S(i, sizeof(set), &set)) {
+ mask |= 1 << i;
+ }
+ }
+ ALOGV("%s: for tid:%d returning cpu count %d mask %llu", __func__, tid, count,
+ (unsigned long long)mask);
+ return mask;
+}
+
+status_t setAffinity(pid_t tid, uint64_t mask) {
+ cpu_set_t set;
+ CPU_ZERO_S(sizeof(set), &set);
+
+ for (uint64_t m = mask; m != 0;) {
+ uint64_t tz = __builtin_ctz(m);
+ CPU_SET_S(tz, sizeof(set), &set);
+ m &= ~(1 << tz);
+ }
+ if (sched_setaffinity(tid, sizeof(set), &set)) {
+ ALOGW("%s: for tid:%d setting cpu mask %llu failed %s", __func__, tid,
+ (unsigned long long)mask, strerror(errno));
+ return -errno;
+ }
+ ALOGV("%s: for tid:%d setting cpu mask %llu", __func__, tid, (unsigned long long)mask);
+ return OK;
+}
+
+__unused status_t setPriority(pid_t tid, int policy, int priority) {
+ struct sched_param param {
+ .sched_priority = priority,
+ };
+ if (sched_setscheduler(tid, policy, &param) != 0) {
+ ALOGW("%s: Cannot set FIFO priority for tid %d to policy %d priority %d %s", __func__, tid,
+ policy, priority, strerror(errno));
+ return -errno;
+ }
+ ALOGV("%s: Successfully set priority for tid %d to policy %d priority %d", __func__, tid,
+ policy, priority);
+ return NO_ERROR;
+}
+
+status_t setUtilMin(pid_t tid, uint32_t utilMin) {
+ // Currently, there is no wrapper in bionic: b/183240349.
+ struct {
+ uint32_t size;
+ uint32_t sched_policy;
+ uint64_t sched_flags;
+ int32_t sched_nice;
+ uint32_t sched_priority;
+ uint64_t sched_runtime;
+ uint64_t sched_deadline;
+ uint64_t sched_period;
+ uint32_t sched_util_min;
+ uint32_t sched_util_max;
+ } attr{
+ .size = sizeof(attr),
+ .sched_flags = SCHED_FLAG_KEEP_ALL | SCHED_FLAG_UTIL_CLAMP_MIN,
+ .sched_util_min = utilMin,
+ };
+
+ if (syscall(__NR_sched_setattr, tid, &attr, 0 /* flags */)) {
+ ALOGW("%s: Cannot set sched_util_min for pid %d to %u %s", __func__, tid, utilMin,
+ strerror(errno));
+ return -errno;
+ }
+ ALOGV("%s: Successfully set sched_util_min for pid %d to %u", __func__, tid, utilMin);
+ return NO_ERROR;
+}
+
+/*
+ Attempts to raise the priority and usage of tid for spatialization.
+ Returns OK if everything works.
+*/
+status_t updateSpatializerPriority(pid_t tid) {
+ status_t status = OK;
+
+ const int cpu = getCpu();
+ ALOGV("%s: current CPU:%d", __func__, cpu);
+
+ const auto currentAffinity = getAffinity(tid);
+ ALOGV("%s: current Affinity:%llx", __func__, (unsigned long long)currentAffinity);
+
+ // Set the desired CPU core affinity.
+ // Typically this would be done to move the Spatializer effect off of the little cores.
+ // The mid cores and large cores typically have more FP/NEON units
+ // and will advantageously reduce power and prevent glitches due CPU limitations.
+ //
+ // Since this is SOC dependent, we do not set the core affinity here but
+ // prefer to set the util_clamp_min below.
+ //
+ constexpr uint64_t kDefaultAffinity = 0;
+ const int32_t desiredAffinity =
+ property_get_int32("audio.spatializer.effect.affinity", kDefaultAffinity);
+ if (desiredAffinity != 0 && (desiredAffinity & ~currentAffinity) == 0) {
+ const status_t localStatus = setAffinity(tid, desiredAffinity);
+ status = status ? status : localStatus;
+ }
+
+ // Set the util_clamp_min.
+ // This is beneficial to reduce glitches when starting up, or due to scheduler
+ // thread statistics reset (e.g. core migration), which cause the CPU frequency to drop
+ // to minimum.
+ //
+ // Experimentation has found that moving to a mid core over a little core reduces
+ // power if the mid core (e.g. A76/78) has more (e.g. 2x) FP/NEON units
+ // than the little core (e.g. A55).
+ // A possible value is 300.
+ //
+ constexpr uint32_t kUtilMin = 0;
+ const int32_t utilMin = property_get_int32("audio.spatializer.effect.util_clamp_min", kUtilMin);
+ if (utilMin > 0 && utilMin <= 1024) {
+ const status_t localStatus = setUtilMin(tid, utilMin);
+ status = status ? status : localStatus;
+ }
+
+#if 0
+ // Provided for local vendor testing but not enabled as audioserver does this for us.
+ //
+ // Set priority if specified.
+ constexpr int32_t kRTPriorityMin = 1;
+ constexpr int32_t kRTPriorityMax = 3;
+ const int32_t priorityBoost =
+ property_get_int32("audio.spatializer.priority", kRTPriorityMin);
+ if (priorityBoost >= kRTPriorityMin && priorityBoost <= kRTPriorityMax) {
+ const status_t localStatus = scheduler::setPriority(threadId, SCHED_FIFO, priorityBoost);
+ status = status ? status : localStatus;
+ }
+#endif
+
+ return status;
+}
+
+} // namespace scheduler
+
#define SCOPED_STATS() \
::android::mediautils::ScopedStatistics scopedStatistics { \
std::string("EffectHal::").append(__func__), mEffectHal->mStatistics \
@@ -83,6 +240,16 @@ class ProcessThread : public Thread {
};
bool ProcessThread::threadLoop() {
+ // For a spatializer effect, we perform scheduler adjustments to reduce glitches and power.
+ {
+ effect_descriptor_t halDescriptor{};
+ if ((*mEffect)->get_descriptor(mEffect, &halDescriptor) == NO_ERROR &&
+ memcmp(&halDescriptor.type, FX_IID_SPATIALIZER, sizeof(effect_uuid_t)) == 0) {
+ const status_t status = scheduler::updateSpatializerPriority(gettid());
+ ALOGW_IF(status != OK, "Failed to update Spatializer priority");
+ }
+ }
+
// This implementation doesn't return control back to the Thread until it decides to stop,
// as the Thread uses mutexes, and this can lead to priority inversion.
while (!std::atomic_load_explicit(mStop, std::memory_order_acquire)) {
@@ -238,12 +405,27 @@ void Effect::effectOffloadParamToHal(const EffectOffloadParameter& offload,
}
// static
-std::vector<uint8_t> Effect::parameterToHal(uint32_t paramSize, const void* paramData,
- uint32_t valueSize, const void** valueData) {
+bool Effect::parameterToHal(uint32_t paramSize, const void* paramData, uint32_t valueSize,
+ const void** valueData, std::vector<uint8_t>* halParamBuffer) {
+ constexpr size_t kMaxSize = EFFECT_PARAM_SIZE_MAX - sizeof(effect_param_t);
+ if (paramSize > kMaxSize) {
+ ALOGE("%s: Parameter size is too big: %" PRIu32, __func__, paramSize);
+ return false;
+ }
size_t valueOffsetFromData = alignedSizeIn<uint32_t>(paramSize) * sizeof(uint32_t);
+ if (valueOffsetFromData > kMaxSize) {
+ ALOGE("%s: Aligned parameter size is too big: %zu", __func__, valueOffsetFromData);
+ return false;
+ }
+ if (valueSize > kMaxSize - valueOffsetFromData) {
+ ALOGE("%s: Value size is too big: %" PRIu32 ", max size is %zu", __func__, valueSize,
+ kMaxSize - valueOffsetFromData);
+ android_errorWriteLog(0x534e4554, "237291425");
+ return false;
+ }
size_t halParamBufferSize = sizeof(effect_param_t) + valueOffsetFromData + valueSize;
- std::vector<uint8_t> halParamBuffer(halParamBufferSize, 0);
- effect_param_t* halParam = reinterpret_cast<effect_param_t*>(&halParamBuffer[0]);
+ halParamBuffer->resize(halParamBufferSize, 0);
+ effect_param_t* halParam = reinterpret_cast<effect_param_t*>(halParamBuffer->data());
halParam->psize = paramSize;
halParam->vsize = valueSize;
memcpy(halParam->data, paramData, paramSize);
@@ -256,7 +438,7 @@ std::vector<uint8_t> Effect::parameterToHal(uint32_t paramSize, const void* para
*valueData = halParam->data + valueOffsetFromData;
}
}
- return halParamBuffer;
+ return true;
}
Result Effect::analyzeCommandStatus(const char* commandName, const char* context, status_t status) {
@@ -301,6 +483,11 @@ void Effect::getConfigImpl(int commandCode, const char* commandName, GetConfigCa
Result Effect::getCurrentConfigImpl(uint32_t featureId, uint32_t configSize,
GetCurrentConfigSuccessCallback onSuccess) {
+ if (configSize > kMaxDataSize - sizeof(uint32_t)) {
+ ALOGE("%s: Config size is too big: %" PRIu32, __func__, configSize);
+ android_errorWriteLog(0x534e4554, "240266798");
+ return Result::INVALID_ARGUMENTS;
+ }
uint32_t halCmd = featureId;
std::vector<uint32_t> halResult(alignedSizeIn<uint32_t>(sizeof(uint32_t) + configSize), 0);
uint32_t halResultSize = 0;
@@ -314,11 +501,15 @@ Result Effect::getParameterImpl(uint32_t paramSize, const void* paramData,
GetParameterSuccessCallback onSuccess) {
// As it is unknown what method HAL uses for copying the provided parameter data,
// it is safer to make sure that input and output buffers do not overlap.
- std::vector<uint8_t> halCmdBuffer =
- parameterToHal(paramSize, paramData, requestValueSize, nullptr);
+ std::vector<uint8_t> halCmdBuffer;
+ if (!parameterToHal(paramSize, paramData, requestValueSize, nullptr, &halCmdBuffer)) {
+ return Result::INVALID_ARGUMENTS;
+ }
const void* valueData = nullptr;
- std::vector<uint8_t> halParamBuffer =
- parameterToHal(paramSize, paramData, replyValueSize, &valueData);
+ std::vector<uint8_t> halParamBuffer;
+ if (!parameterToHal(paramSize, paramData, replyValueSize, &valueData, &halParamBuffer)) {
+ return Result::INVALID_ARGUMENTS;
+ }
uint32_t halParamBufferSize = halParamBuffer.size();
return sendCommandReturningStatusAndData(
@@ -331,8 +522,12 @@ Result Effect::getParameterImpl(uint32_t paramSize, const void* paramData,
Result Effect::getSupportedConfigsImpl(uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
GetSupportedConfigsSuccessCallback onSuccess) {
+ if (maxConfigs != 0 && configSize > (kMaxDataSize - 2 * sizeof(uint32_t)) / maxConfigs) {
+ ALOGE("%s: Config size is too big: %" PRIu32, __func__, configSize);
+ return Result::INVALID_ARGUMENTS;
+ }
uint32_t halCmd[2] = {featureId, maxConfigs};
- uint32_t halResultSize = 2 * sizeof(uint32_t) + maxConfigs * sizeof(configSize);
+ uint32_t halResultSize = 2 * sizeof(uint32_t) + maxConfigs * configSize;
std::vector<uint8_t> halResult(static_cast<size_t>(halResultSize), 0);
return sendCommandReturningStatusAndData(
EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS, "GET_FEATURE_SUPPORTED_CONFIGS", sizeof(halCmd),
@@ -472,8 +667,10 @@ Result Effect::setConfigImpl(int commandCode, const char* commandName, const Eff
Result Effect::setParameterImpl(uint32_t paramSize, const void* paramData, uint32_t valueSize,
const void* valueData) {
- std::vector<uint8_t> halParamBuffer =
- parameterToHal(paramSize, paramData, valueSize, &valueData);
+ std::vector<uint8_t> halParamBuffer;
+ if (!parameterToHal(paramSize, paramData, valueSize, &valueData, &halParamBuffer)) {
+ return Result::INVALID_ARGUMENTS;
+ }
return sendCommandReturningStatus(EFFECT_CMD_SET_PARAM, "SET_PARAM", halParamBuffer.size(),
&halParamBuffer[0]);
}
@@ -670,8 +867,21 @@ Return<void> Effect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
void* dataPtr = halDataSize > 0 ? &halData[0] : NULL;
void* resultPtr = halResultSize > 0 ? &halResult[0] : NULL;
- status_t status =
- (*mHandle)->command(mHandle, commandId, halDataSize, dataPtr, &halResultSize, resultPtr);
+ status_t status = BAD_VALUE;
+ switch (commandId) {
+ case 'gtid': // retrieve the tid, used for spatializer priority boost
+ if (halDataSize == 0 && resultMaxSize == sizeof(int32_t)) {
+ auto ptid = (int32_t*)resultPtr;
+ ptid[0] = mProcessThread ? mProcessThread->getTid() : -1;
+ status = OK;
+ break; // we have handled 'gtid' here.
+ }
+ [[fallthrough]]; // allow 'gtid' overload (checked halDataSize and resultMaxSize).
+ default:
+ status = (*mHandle)->command(mHandle, commandId, halDataSize, dataPtr, &halResultSize,
+ resultPtr);
+ break;
+ }
hidl_vec<uint8_t> result;
if (status == OK && resultPtr != NULL) {
result.setToExternal(&halResult[0], halResultSize);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-03 06:53:16 +0000