summaryrefslogtreecommitdiffstats
path: root/services/audioflinger/FastMixer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'services/audioflinger/FastMixer.cpp')
-rw-r--r--services/audioflinger/FastMixer.cpp464
1 files changed, 125 insertions, 339 deletions
diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index 2678cbf..f1cf0aa 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -27,10 +27,11 @@
#include "Configuration.h"
#include <time.h>
+#include <utils/Debug.h>
#include <utils/Log.h>
#include <utils/Trace.h>
#include <system/audio.h>
-#ifdef FAST_MIXER_STATISTICS
+#ifdef FAST_THREAD_STATISTICS
#include <cpustats/CentralTendencyStatistics.h>
#ifdef CPU_FREQUENCY_STATISTICS
#include <cpustats/ThreadCpuUsage.h>
@@ -44,15 +45,15 @@
namespace android {
-/*static*/ const FastMixerState FastMixer::initial;
+/*static*/ const FastMixerState FastMixer::sInitial;
FastMixer::FastMixer() : FastThread(),
- slopNs(0),
- // fastTrackNames
- // generations
- outputSink(NULL),
- outputSinkGen(0),
- mixer(NULL),
+ mSlopNs(0),
+ // mFastTrackNames
+ // mGenerations
+ mOutputSink(NULL),
+ mOutputSinkGen(0),
+ mMixer(NULL),
mSinkBuffer(NULL),
mSinkBufferSize(0),
mSinkChannelCount(FCC_2),
@@ -60,30 +61,30 @@ FastMixer::FastMixer() : FastThread(),
mMixerBufferSize(0),
mMixerBufferFormat(AUDIO_FORMAT_PCM_16_BIT),
mMixerBufferState(UNDEFINED),
- format(Format_Invalid),
- sampleRate(0),
- fastTracksGen(0),
- totalNativeFramesWritten(0),
+ mFormat(Format_Invalid),
+ mSampleRate(0),
+ mFastTracksGen(0),
+ mTotalNativeFramesWritten(0),
// timestamp
- nativeFramesWrittenButNotPresented(0) // the = 0 is to silence the compiler
+ mNativeFramesWrittenButNotPresented(0) // the = 0 is to silence the compiler
{
- // FIXME pass initial as parameter to base class constructor, and make it static local
- previous = &initial;
- current = &initial;
+ // FIXME pass sInitial as parameter to base class constructor, and make it static local
+ mPrevious = &sInitial;
+ mCurrent = &sInitial;
- mDummyDumpState = &dummyDumpState;
+ mDummyDumpState = &mDummyFastMixerDumpState;
// TODO: Add channel mask to NBAIO_Format.
// We assume that the channel mask must be a valid positional channel mask.
mSinkChannelMask = audio_channel_out_mask_from_count(mSinkChannelCount);
unsigned i;
for (i = 0; i < FastMixerState::kMaxFastTracks; ++i) {
- fastTrackNames[i] = -1;
- generations[i] = 0;
+ mFastTrackNames[i] = -1;
+ mGenerations[i] = 0;
}
-#ifdef FAST_MIXER_STATISTICS
- oldLoad.tv_sec = 0;
- oldLoad.tv_nsec = 0;
+#ifdef FAST_THREAD_STATISTICS
+ mOldLoad.tv_sec = 0;
+ mOldLoad.tv_nsec = 0;
#endif
}
@@ -103,20 +104,20 @@ const FastThreadState *FastMixer::poll()
void FastMixer::setLog(NBLog::Writer *logWriter)
{
- if (mixer != NULL) {
- mixer->setLog(logWriter);
+ if (mMixer != NULL) {
+ mMixer->setLog(logWriter);
}
}
void FastMixer::onIdle()
{
- preIdle = *(const FastMixerState *)current;
- current = &preIdle;
+ mPreIdle = *(const FastMixerState *)mCurrent;
+ mCurrent = &mPreIdle;
}
void FastMixer::onExit()
{
- delete mixer;
+ delete mMixer;
free(mMixerBuffer);
free(mSinkBuffer);
}
@@ -135,82 +136,84 @@ bool FastMixer::isSubClassCommand(FastThreadState::Command command)
void FastMixer::onStateChange()
{
- const FastMixerState * const current = (const FastMixerState *) this->current;
- const FastMixerState * const previous = (const FastMixerState *) this->previous;
- FastMixerDumpState * const dumpState = (FastMixerDumpState *) this->dumpState;
+ const FastMixerState * const current = (const FastMixerState *) mCurrent;
+ const FastMixerState * const previous = (const FastMixerState *) mPrevious;
+ FastMixerDumpState * const dumpState = (FastMixerDumpState *) mDumpState;
const size_t frameCount = current->mFrameCount;
// handle state change here, but since we want to diff the state,
- // we're prepared for previous == &initial the first time through
+ // we're prepared for previous == &sInitial the first time through
unsigned previousTrackMask;
// check for change in output HAL configuration
- NBAIO_Format previousFormat = format;
- if (current->mOutputSinkGen != outputSinkGen) {
- outputSink = current->mOutputSink;
- outputSinkGen = current->mOutputSinkGen;
- if (outputSink == NULL) {
- format = Format_Invalid;
- sampleRate = 0;
+ NBAIO_Format previousFormat = mFormat;
+ if (current->mOutputSinkGen != mOutputSinkGen) {
+ mOutputSink = current->mOutputSink;
+ mOutputSinkGen = current->mOutputSinkGen;
+ if (mOutputSink == NULL) {
+ mFormat = Format_Invalid;
+ mSampleRate = 0;
mSinkChannelCount = 0;
mSinkChannelMask = AUDIO_CHANNEL_NONE;
} else {
- format = outputSink->format();
- sampleRate = Format_sampleRate(format);
- mSinkChannelCount = Format_channelCount(format);
+ mFormat = mOutputSink->format();
+ mSampleRate = Format_sampleRate(mFormat);
+ mSinkChannelCount = Format_channelCount(mFormat);
LOG_ALWAYS_FATAL_IF(mSinkChannelCount > AudioMixer::MAX_NUM_CHANNELS);
// TODO: Add channel mask to NBAIO_Format
// We assume that the channel mask must be a valid positional channel mask.
mSinkChannelMask = audio_channel_out_mask_from_count(mSinkChannelCount);
}
- dumpState->mSampleRate = sampleRate;
+ dumpState->mSampleRate = mSampleRate;
}
- if ((!Format_isEqual(format, previousFormat)) || (frameCount != previous->mFrameCount)) {
+ if ((!Format_isEqual(mFormat, previousFormat)) || (frameCount != previous->mFrameCount)) {
// FIXME to avoid priority inversion, don't delete here
- delete mixer;
- mixer = NULL;
+ delete mMixer;
+ mMixer = NULL;
free(mMixerBuffer);
mMixerBuffer = NULL;
free(mSinkBuffer);
mSinkBuffer = NULL;
- if (frameCount > 0 && sampleRate > 0) {
+ if (frameCount > 0 && mSampleRate > 0) {
// FIXME new may block for unbounded time at internal mutex of the heap
// implementation; it would be better to have normal mixer allocate for us
// to avoid blocking here and to prevent possible priority inversion
- mixer = new AudioMixer(frameCount, sampleRate, FastMixerState::kMaxFastTracks);
+ mMixer = new AudioMixer(frameCount, mSampleRate, FastMixerState::kMaxFastTracks);
const size_t mixerFrameSize = mSinkChannelCount
* audio_bytes_per_sample(mMixerBufferFormat);
mMixerBufferSize = mixerFrameSize * frameCount;
(void)posix_memalign(&mMixerBuffer, 32, mMixerBufferSize);
const size_t sinkFrameSize = mSinkChannelCount
- * audio_bytes_per_sample(format.mFormat);
+ * audio_bytes_per_sample(mFormat.mFormat);
if (sinkFrameSize > mixerFrameSize) { // need a sink buffer
mSinkBufferSize = sinkFrameSize * frameCount;
(void)posix_memalign(&mSinkBuffer, 32, mSinkBufferSize);
}
- periodNs = (frameCount * 1000000000LL) / sampleRate; // 1.00
- underrunNs = (frameCount * 1750000000LL) / sampleRate; // 1.75
- overrunNs = (frameCount * 500000000LL) / sampleRate; // 0.50
- forceNs = (frameCount * 950000000LL) / sampleRate; // 0.95
- warmupNs = (frameCount * 500000000LL) / sampleRate; // 0.50
+ mPeriodNs = (frameCount * 1000000000LL) / mSampleRate; // 1.00
+ mUnderrunNs = (frameCount * 1750000000LL) / mSampleRate; // 1.75
+ mOverrunNs = (frameCount * 500000000LL) / mSampleRate; // 0.50
+ mForceNs = (frameCount * 950000000LL) / mSampleRate; // 0.95
+ mWarmupNsMin = (frameCount * 750000000LL) / mSampleRate; // 0.75
+ mWarmupNsMax = (frameCount * 1250000000LL) / mSampleRate; // 1.25
} else {
- periodNs = 0;
- underrunNs = 0;
- overrunNs = 0;
- forceNs = 0;
- warmupNs = 0;
+ mPeriodNs = 0;
+ mUnderrunNs = 0;
+ mOverrunNs = 0;
+ mForceNs = 0;
+ mWarmupNsMin = 0;
+ mWarmupNsMax = LONG_MAX;
}
mMixerBufferState = UNDEFINED;
#if !LOG_NDEBUG
for (unsigned i = 0; i < FastMixerState::kMaxFastTracks; ++i) {
- fastTrackNames[i] = -1;
+ mFastTrackNames[i] = -1;
}
#endif
// we need to reconfigure all active tracks
previousTrackMask = 0;
- fastTracksGen = current->mFastTracksGen - 1;
+ mFastTracksGen = current->mFastTracksGen - 1;
dumpState->mFrameCount = frameCount;
} else {
previousTrackMask = previous->mTrackMask;
@@ -219,7 +222,7 @@ void FastMixer::onStateChange()
// check for change in active track set
const unsigned currentTrackMask = current->mTrackMask;
dumpState->mTrackMask = currentTrackMask;
- if (current->mFastTracksGen != fastTracksGen) {
+ if (current->mFastTracksGen != mFastTracksGen) {
ALOG_ASSERT(mMixerBuffer != NULL);
int name;
@@ -230,16 +233,16 @@ void FastMixer::onStateChange()
removedTracks &= ~(1 << i);
const FastTrack* fastTrack = &current->mFastTracks[i];
ALOG_ASSERT(fastTrack->mBufferProvider == NULL);
- if (mixer != NULL) {
- name = fastTrackNames[i];
+ if (mMixer != NULL) {
+ name = mFastTrackNames[i];
ALOG_ASSERT(name >= 0);
- mixer->deleteTrackName(name);
+ mMixer->deleteTrackName(name);
}
#if !LOG_NDEBUG
- fastTrackNames[i] = -1;
+ mFastTrackNames[i] = -1;
#endif
// don't reset track dump state, since other side is ignoring it
- generations[i] = fastTrack->mGeneration;
+ mGenerations[i] = fastTrack->mGeneration;
}
// now process added tracks
@@ -249,29 +252,29 @@ void FastMixer::onStateChange()
addedTracks &= ~(1 << i);
const FastTrack* fastTrack = &current->mFastTracks[i];
AudioBufferProvider *bufferProvider = fastTrack->mBufferProvider;
- ALOG_ASSERT(bufferProvider != NULL && fastTrackNames[i] == -1);
- if (mixer != NULL) {
- name = mixer->getTrackName(fastTrack->mChannelMask,
+ ALOG_ASSERT(bufferProvider != NULL && mFastTrackNames[i] == -1);
+ if (mMixer != NULL) {
+ name = mMixer->getTrackName(fastTrack->mChannelMask,
fastTrack->mFormat, AUDIO_SESSION_OUTPUT_MIX);
ALOG_ASSERT(name >= 0);
- fastTrackNames[i] = name;
- mixer->setBufferProvider(name, bufferProvider);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MAIN_BUFFER,
+ mFastTrackNames[i] = name;
+ mMixer->setBufferProvider(name, bufferProvider);
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MAIN_BUFFER,
(void *)mMixerBuffer);
// newly allocated track names default to full scale volume
- mixer->setParameter(
+ mMixer->setParameter(
name,
AudioMixer::TRACK,
AudioMixer::MIXER_FORMAT, (void *)mMixerBufferFormat);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::FORMAT,
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::FORMAT,
(void *)(uintptr_t)fastTrack->mFormat);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::CHANNEL_MASK,
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::CHANNEL_MASK,
(void *)(uintptr_t)fastTrack->mChannelMask);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MIXER_CHANNEL_MASK,
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MIXER_CHANNEL_MASK,
(void *)(uintptr_t)mSinkChannelMask);
- mixer->enable(name);
+ mMixer->enable(name);
}
- generations[i] = fastTrack->mGeneration;
+ mGenerations[i] = fastTrack->mGeneration;
}
// finally process (potentially) modified tracks; these use the same slot
@@ -281,38 +284,38 @@ void FastMixer::onStateChange()
int i = __builtin_ctz(modifiedTracks);
modifiedTracks &= ~(1 << i);
const FastTrack* fastTrack = &current->mFastTracks[i];
- if (fastTrack->mGeneration != generations[i]) {
+ if (fastTrack->mGeneration != mGenerations[i]) {
// this track was actually modified
AudioBufferProvider *bufferProvider = fastTrack->mBufferProvider;
ALOG_ASSERT(bufferProvider != NULL);
- if (mixer != NULL) {
- name = fastTrackNames[i];
+ if (mMixer != NULL) {
+ name = mFastTrackNames[i];
ALOG_ASSERT(name >= 0);
- mixer->setBufferProvider(name, bufferProvider);
+ mMixer->setBufferProvider(name, bufferProvider);
if (fastTrack->mVolumeProvider == NULL) {
float f = AudioMixer::UNITY_GAIN_FLOAT;
- mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME0, &f);
- mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME1, &f);
+ mMixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME0, &f);
+ mMixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME1, &f);
}
- mixer->setParameter(name, AudioMixer::RESAMPLE,
+ mMixer->setParameter(name, AudioMixer::RESAMPLE,
AudioMixer::REMOVE, NULL);
- mixer->setParameter(
+ mMixer->setParameter(
name,
AudioMixer::TRACK,
AudioMixer::MIXER_FORMAT, (void *)mMixerBufferFormat);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::FORMAT,
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::FORMAT,
(void *)(uintptr_t)fastTrack->mFormat);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::CHANNEL_MASK,
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::CHANNEL_MASK,
(void *)(uintptr_t)fastTrack->mChannelMask);
- mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MIXER_CHANNEL_MASK,
+ mMixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MIXER_CHANNEL_MASK,
(void *)(uintptr_t)mSinkChannelMask);
// already enabled
}
- generations[i] = fastTrack->mGeneration;
+ mGenerations[i] = fastTrack->mGeneration;
}
}
- fastTracksGen = current->mFastTracksGen;
+ mFastTracksGen = current->mFastTracksGen;
dumpState->mNumTracks = popcount(currentTrackMask);
}
@@ -320,12 +323,12 @@ void FastMixer::onStateChange()
void FastMixer::onWork()
{
- const FastMixerState * const current = (const FastMixerState *) this->current;
- FastMixerDumpState * const dumpState = (FastMixerDumpState *) this->dumpState;
- const FastMixerState::Command command = this->command;
+ const FastMixerState * const current = (const FastMixerState *) mCurrent;
+ FastMixerDumpState * const dumpState = (FastMixerDumpState *) mDumpState;
+ const FastMixerState::Command command = mCommand;
const size_t frameCount = current->mFrameCount;
- if ((command & FastMixerState::MIX) && (mixer != NULL) && isWarm) {
+ if ((command & FastMixerState::MIX) && (mMixer != NULL) && mIsWarm) {
ALOG_ASSERT(mMixerBuffer != NULL);
// for each track, update volume and check for underrun
unsigned currentTrackMask = current->mTrackMask;
@@ -335,9 +338,9 @@ void FastMixer::onWork()
const FastTrack* fastTrack = &current->mFastTracks[i];
// Refresh the per-track timestamp
- if (timestampStatus == NO_ERROR) {
+ if (mTimestampStatus == NO_ERROR) {
uint32_t trackFramesWrittenButNotPresented =
- nativeFramesWrittenButNotPresented;
+ mNativeFramesWrittenButNotPresented;
uint32_t trackFramesWritten = fastTrack->mBufferProvider->framesReleased();
// Can't provide an AudioTimestamp before first frame presented,
// or during the brief 32-bit wraparound window
@@ -345,20 +348,20 @@ void FastMixer::onWork()
AudioTimestamp perTrackTimestamp;
perTrackTimestamp.mPosition =
trackFramesWritten - trackFramesWrittenButNotPresented;
- perTrackTimestamp.mTime = timestamp.mTime;
+ perTrackTimestamp.mTime = mTimestamp.mTime;
fastTrack->mBufferProvider->onTimestamp(perTrackTimestamp);
}
}
- int name = fastTrackNames[i];
+ int name = mFastTrackNames[i];
ALOG_ASSERT(name >= 0);
if (fastTrack->mVolumeProvider != NULL) {
gain_minifloat_packed_t vlr = fastTrack->mVolumeProvider->getVolumeLR();
float vlf = float_from_gain(gain_minifloat_unpack_left(vlr));
float vrf = float_from_gain(gain_minifloat_unpack_right(vlr));
- mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME0, &vlf);
- mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME1, &vrf);
+ mMixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME0, &vlf);
+ mMixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME1, &vrf);
}
// FIXME The current implementation of framesReady() for fast tracks
// takes a tryLock, which can block
@@ -379,43 +382,44 @@ void FastMixer::onWork()
if (framesReady == 0) {
underruns.mBitFields.mEmpty++;
underruns.mBitFields.mMostRecent = UNDERRUN_EMPTY;
- mixer->disable(name);
+ mMixer->disable(name);
} else {
// allow mixing partial buffer
underruns.mBitFields.mPartial++;
underruns.mBitFields.mMostRecent = UNDERRUN_PARTIAL;
- mixer->enable(name);
+ mMixer->enable(name);
}
} else {
underruns.mBitFields.mFull++;
underruns.mBitFields.mMostRecent = UNDERRUN_FULL;
- mixer->enable(name);
+ mMixer->enable(name);
}
ftDump->mUnderruns = underruns;
ftDump->mFramesReady = framesReady;
}
int64_t pts;
- if (outputSink == NULL || (OK != outputSink->getNextWriteTimestamp(&pts))) {
+ if (mOutputSink == NULL || (OK != mOutputSink->getNextWriteTimestamp(&pts))) {
pts = AudioBufferProvider::kInvalidPTS;
}
// process() is CPU-bound
- mixer->process(pts);
+ mMixer->process(pts);
mMixerBufferState = MIXED;
} else if (mMixerBufferState == MIXED) {
mMixerBufferState = UNDEFINED;
}
//bool didFullWrite = false; // dumpsys could display a count of partial writes
- if ((command & FastMixerState::WRITE) && (outputSink != NULL) && (mMixerBuffer != NULL)) {
+ if ((command & FastMixerState::WRITE) && (mOutputSink != NULL) && (mMixerBuffer != NULL)) {
if (mMixerBufferState == UNDEFINED) {
memset(mMixerBuffer, 0, mMixerBufferSize);
mMixerBufferState = ZEROED;
}
+ // prepare the buffer used to write to sink
void *buffer = mSinkBuffer != NULL ? mSinkBuffer : mMixerBuffer;
- if (format.mFormat != mMixerBufferFormat) { // sink format not the same as mixer format
- memcpy_by_audio_format(buffer, format.mFormat, mMixerBuffer, mMixerBufferFormat,
- frameCount * Format_channelCount(format));
+ if (mFormat.mFormat != mMixerBufferFormat) { // sink format not the same as mixer format
+ memcpy_by_audio_format(buffer, mFormat.mFormat, mMixerBuffer, mMixerBufferFormat,
+ frameCount * Format_channelCount(mFormat));
}
// if non-NULL, then duplicate write() to this non-blocking sink
NBAIO_Sink* teeSink;
@@ -426,252 +430,34 @@ void FastMixer::onWork()
// but this code should be modified to handle both non-blocking and blocking sinks
dumpState->mWriteSequence++;
ATRACE_BEGIN("write");
- ssize_t framesWritten = outputSink->write(buffer, frameCount);
+ ssize_t framesWritten = mOutputSink->write(buffer, frameCount);
ATRACE_END();
dumpState->mWriteSequence++;
if (framesWritten >= 0) {
ALOG_ASSERT((size_t) framesWritten <= frameCount);
- totalNativeFramesWritten += framesWritten;
- dumpState->mFramesWritten = totalNativeFramesWritten;
+ mTotalNativeFramesWritten += framesWritten;
+ dumpState->mFramesWritten = mTotalNativeFramesWritten;
//if ((size_t) framesWritten == frameCount) {
// didFullWrite = true;
//}
} else {
dumpState->mWriteErrors++;
}
- attemptedWrite = true;
+ mAttemptedWrite = true;
// FIXME count # of writes blocked excessively, CPU usage, etc. for dump
- timestampStatus = outputSink->getTimestamp(timestamp);
- if (timestampStatus == NO_ERROR) {
- uint32_t totalNativeFramesPresented = timestamp.mPosition;
- if (totalNativeFramesPresented <= totalNativeFramesWritten) {
- nativeFramesWrittenButNotPresented =
- totalNativeFramesWritten - totalNativeFramesPresented;
+ mTimestampStatus = mOutputSink->getTimestamp(mTimestamp);
+ if (mTimestampStatus == NO_ERROR) {
+ uint32_t totalNativeFramesPresented = mTimestamp.mPosition;
+ if (totalNativeFramesPresented <= mTotalNativeFramesWritten) {
+ mNativeFramesWrittenButNotPresented =
+ mTotalNativeFramesWritten - totalNativeFramesPresented;
} else {
// HAL reported that more frames were presented than were written
- timestampStatus = INVALID_OPERATION;
+ mTimestampStatus = INVALID_OPERATION;
}
}
}
}
-FastMixerDumpState::FastMixerDumpState(
-#ifdef FAST_MIXER_STATISTICS
- uint32_t samplingN
-#endif
- ) : FastThreadDumpState(),
- mWriteSequence(0), mFramesWritten(0),
- mNumTracks(0), mWriteErrors(0),
- mSampleRate(0), mFrameCount(0),
- mTrackMask(0)
-{
-#ifdef FAST_MIXER_STATISTICS
- increaseSamplingN(samplingN);
-#endif
-}
-
-#ifdef FAST_MIXER_STATISTICS
-void FastMixerDumpState::increaseSamplingN(uint32_t samplingN)
-{
- if (samplingN <= mSamplingN || samplingN > kSamplingN || roundup(samplingN) != samplingN) {
- return;
- }
- uint32_t additional = samplingN - mSamplingN;
- // sample arrays aren't accessed atomically with respect to the bounds,
- // so clearing reduces chance for dumpsys to read random uninitialized samples
- memset(&mMonotonicNs[mSamplingN], 0, sizeof(mMonotonicNs[0]) * additional);
- memset(&mLoadNs[mSamplingN], 0, sizeof(mLoadNs[0]) * additional);
-#ifdef CPU_FREQUENCY_STATISTICS
- memset(&mCpukHz[mSamplingN], 0, sizeof(mCpukHz[0]) * additional);
-#endif
- mSamplingN = samplingN;
-}
-#endif
-
-FastMixerDumpState::~FastMixerDumpState()
-{
-}
-
-// helper function called by qsort()
-static int compare_uint32_t(const void *pa, const void *pb)
-{
- uint32_t a = *(const uint32_t *)pa;
- uint32_t b = *(const uint32_t *)pb;
- if (a < b) {
- return -1;
- } else if (a > b) {
- return 1;
- } else {
- return 0;
- }
-}
-
-void FastMixerDumpState::dump(int fd) const
-{
- if (mCommand == FastMixerState::INITIAL) {
- dprintf(fd, " FastMixer not initialized\n");
- return;
- }
-#define COMMAND_MAX 32
- char string[COMMAND_MAX];
- switch (mCommand) {
- case FastMixerState::INITIAL:
- strcpy(string, "INITIAL");
- break;
- case FastMixerState::HOT_IDLE:
- strcpy(string, "HOT_IDLE");
- break;
- case FastMixerState::COLD_IDLE:
- strcpy(string, "COLD_IDLE");
- break;
- case FastMixerState::EXIT:
- strcpy(string, "EXIT");
- break;
- case FastMixerState::MIX:
- strcpy(string, "MIX");
- break;
- case FastMixerState::WRITE:
- strcpy(string, "WRITE");
- break;
- case FastMixerState::MIX_WRITE:
- strcpy(string, "MIX_WRITE");
- break;
- default:
- snprintf(string, COMMAND_MAX, "%d", mCommand);
- break;
- }
- double measuredWarmupMs = (mMeasuredWarmupTs.tv_sec * 1000.0) +
- (mMeasuredWarmupTs.tv_nsec / 1000000.0);
- double mixPeriodSec = (double) mFrameCount / (double) mSampleRate;
- dprintf(fd, " FastMixer command=%s writeSequence=%u framesWritten=%u\n"
- " numTracks=%u writeErrors=%u underruns=%u overruns=%u\n"
- " sampleRate=%u frameCount=%zu measuredWarmup=%.3g ms, warmupCycles=%u\n"
- " mixPeriod=%.2f ms\n",
- string, mWriteSequence, mFramesWritten,
- mNumTracks, mWriteErrors, mUnderruns, mOverruns,
- mSampleRate, mFrameCount, measuredWarmupMs, mWarmupCycles,
- mixPeriodSec * 1e3);
-#ifdef FAST_MIXER_STATISTICS
- // find the interval of valid samples
- uint32_t bounds = mBounds;
- uint32_t newestOpen = bounds & 0xFFFF;
- uint32_t oldestClosed = bounds >> 16;
- uint32_t n = (newestOpen - oldestClosed) & 0xFFFF;
- if (n > mSamplingN) {
- ALOGE("too many samples %u", n);
- n = mSamplingN;
- }
- // statistics for monotonic (wall clock) time, thread raw CPU load in time, CPU clock frequency,
- // and adjusted CPU load in MHz normalized for CPU clock frequency
- CentralTendencyStatistics wall, loadNs;
-#ifdef CPU_FREQUENCY_STATISTICS
- CentralTendencyStatistics kHz, loadMHz;
- uint32_t previousCpukHz = 0;
-#endif
- // Assuming a normal distribution for cycle times, three standard deviations on either side of
- // the mean account for 99.73% of the population. So if we take each tail to be 1/1000 of the
- // sample set, we get 99.8% combined, or close to three standard deviations.
- static const uint32_t kTailDenominator = 1000;
- uint32_t *tail = n >= kTailDenominator ? new uint32_t[n] : NULL;
- // loop over all the samples
- for (uint32_t j = 0; j < n; ++j) {
- size_t i = oldestClosed++ & (mSamplingN - 1);
- uint32_t wallNs = mMonotonicNs[i];
- if (tail != NULL) {
- tail[j] = wallNs;
- }
- wall.sample(wallNs);
- uint32_t sampleLoadNs = mLoadNs[i];
- loadNs.sample(sampleLoadNs);
-#ifdef CPU_FREQUENCY_STATISTICS
- uint32_t sampleCpukHz = mCpukHz[i];
- // skip bad kHz samples
- if ((sampleCpukHz & ~0xF) != 0) {
- kHz.sample(sampleCpukHz >> 4);
- if (sampleCpukHz == previousCpukHz) {
- double megacycles = (double) sampleLoadNs * (double) (sampleCpukHz >> 4) * 1e-12;
- double adjMHz = megacycles / mixPeriodSec; // _not_ wallNs * 1e9
- loadMHz.sample(adjMHz);
- }
- }
- previousCpukHz = sampleCpukHz;
-#endif
- }
- if (n) {
- dprintf(fd, " Simple moving statistics over last %.1f seconds:\n",
- wall.n() * mixPeriodSec);
- dprintf(fd, " wall clock time in ms per mix cycle:\n"
- " mean=%.2f min=%.2f max=%.2f stddev=%.2f\n",
- wall.mean()*1e-6, wall.minimum()*1e-6, wall.maximum()*1e-6,
- wall.stddev()*1e-6);
- dprintf(fd, " raw CPU load in us per mix cycle:\n"
- " mean=%.0f min=%.0f max=%.0f stddev=%.0f\n",
- loadNs.mean()*1e-3, loadNs.minimum()*1e-3, loadNs.maximum()*1e-3,
- loadNs.stddev()*1e-3);
- } else {
- dprintf(fd, " No FastMixer statistics available currently\n");
- }
-#ifdef CPU_FREQUENCY_STATISTICS
- dprintf(fd, " CPU clock frequency in MHz:\n"
- " mean=%.0f min=%.0f max=%.0f stddev=%.0f\n",
- kHz.mean()*1e-3, kHz.minimum()*1e-3, kHz.maximum()*1e-3, kHz.stddev()*1e-3);
- dprintf(fd, " adjusted CPU load in MHz (i.e. normalized for CPU clock frequency):\n"
- " mean=%.1f min=%.1f max=%.1f stddev=%.1f\n",
- loadMHz.mean(), loadMHz.minimum(), loadMHz.maximum(), loadMHz.stddev());
-#endif
- if (tail != NULL) {
- qsort(tail, n, sizeof(uint32_t), compare_uint32_t);
- // assume same number of tail samples on each side, left and right
- uint32_t count = n / kTailDenominator;
- CentralTendencyStatistics left, right;
- for (uint32_t i = 0; i < count; ++i) {
- left.sample(tail[i]);
- right.sample(tail[n - (i + 1)]);
- }
- dprintf(fd, " Distribution of mix cycle times in ms for the tails (> ~3 stddev outliers):\n"
- " left tail: mean=%.2f min=%.2f max=%.2f stddev=%.2f\n"
- " right tail: mean=%.2f min=%.2f max=%.2f stddev=%.2f\n",
- left.mean()*1e-6, left.minimum()*1e-6, left.maximum()*1e-6, left.stddev()*1e-6,
- right.mean()*1e-6, right.minimum()*1e-6, right.maximum()*1e-6,
- right.stddev()*1e-6);
- delete[] tail;
- }
-#endif
- // The active track mask and track states are updated non-atomically.
- // So if we relied on isActive to decide whether to display,
- // then we might display an obsolete track or omit an active track.
- // Instead we always display all tracks, with an indication
- // of whether we think the track is active.
- uint32_t trackMask = mTrackMask;
- dprintf(fd, " Fast tracks: kMaxFastTracks=%u activeMask=%#x\n",
- FastMixerState::kMaxFastTracks, trackMask);
- dprintf(fd, " Index Active Full Partial Empty Recent Ready\n");
- for (uint32_t i = 0; i < FastMixerState::kMaxFastTracks; ++i, trackMask >>= 1) {
- bool isActive = trackMask & 1;
- const FastTrackDump *ftDump = &mTracks[i];
- const FastTrackUnderruns& underruns = ftDump->mUnderruns;
- const char *mostRecent;
- switch (underruns.mBitFields.mMostRecent) {
- case UNDERRUN_FULL:
- mostRecent = "full";
- break;
- case UNDERRUN_PARTIAL:
- mostRecent = "partial";
- break;
- case UNDERRUN_EMPTY:
- mostRecent = "empty";
- break;
- default:
- mostRecent = "?";
- break;
- }
- dprintf(fd, " %5u %6s %4u %7u %5u %7s %5zu\n", i, isActive ? "yes" : "no",
- (underruns.mBitFields.mFull) & UNDERRUN_MASK,
- (underruns.mBitFields.mPartial) & UNDERRUN_MASK,
- (underruns.mBitFields.mEmpty) & UNDERRUN_MASK,
- mostRecent, ftDump->mFramesReady);
- }
-}
-
} // namespace android
generated by cgit v1.1 at 2025-01-11 14:04:42 +0000