FastMixer.cpp revision 99c99d00beb43b939dedc9ffb07adb89f6a85ba5
197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten/* 297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * Copyright (C) 2012 The Android Open Source Project 397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * 497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * Licensed under the Apache License, Version 2.0 (the "License"); 597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * you may not use this file except in compliance with the License. 697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * You may obtain a copy of the License at 797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * 897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * http://www.apache.org/licenses/LICENSE-2.0 997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * 1097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * Unless required by applicable law or agreed to in writing, software 1197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * distributed under the License is distributed on an "AS IS" BASIS, 1297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * See the License for the specific language governing permissions and 1497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten * limitations under the License. 1597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten */ 1697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 1797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#define LOG_TAG "FastMixer" 1897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten//#define LOG_NDEBUG 0 1997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 2097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include <sys/atomics.h> 2197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include <time.h> 2297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include <utils/Log.h> 23d8e6fd35ec2b59ee7d873daf1f1d9d348221c7bcGlenn Kasten#include <utils/Trace.h> 2497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include <system/audio.h> 2597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#ifdef FAST_MIXER_STATISTICS 2697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include <cpustats/CentralTendencyStatistics.h> 2742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten#include <cpustats/ThreadCpuUsage.h> 2897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 2997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include "AudioMixer.h" 3097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#include "FastMixer.h" 3197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 3297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#define FAST_HOT_IDLE_NS 1000000L // 1 ms: time to sleep while hot idling 3397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#define FAST_DEFAULT_NS 999999999L // ~1 sec: default time to sleep 34288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten#define MAX_WARMUP_CYCLES 10 // maximum number of loop cycles to wait for warmup 3597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 3697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kastennamespace android { 3797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 3897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten// Fast mixer thread 3997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kastenbool FastMixer::threadLoop() 4097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten{ 4197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten static const FastMixerState initial; 4297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const FastMixerState *previous = &initial, *current = &initial; 4397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten FastMixerState preIdle; // copy of state before we went into idle 4497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten struct timespec oldTs = {0, 0}; 4597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten bool oldTsValid = false; 4697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten long slopNs = 0; // accumulated time we've woken up too early (> 0) or too late (< 0) 4797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten long sleepNs = -1; // -1: busy wait, 0: sched_yield, > 0: nanosleep 4897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int fastTrackNames[FastMixerState::kMaxFastTracks]; // handles used by mixer to identify tracks 4997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int generations[FastMixerState::kMaxFastTracks]; // last observed mFastTracks[i].mGeneration 5097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned i; 5197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten for (i = 0; i < FastMixerState::kMaxFastTracks; ++i) { 5297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fastTrackNames[i] = -1; 5397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten generations[i] = 0; 5497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 5597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten NBAIO_Sink *outputSink = NULL; 5697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int outputSinkGen = 0; 5797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten AudioMixer* mixer = NULL; 5897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten short *mixBuffer = NULL; 5997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten enum {UNDEFINED, MIXED, ZEROED} mixBufferState = UNDEFINED; 6097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten NBAIO_Format format = Format_Invalid; 6197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned sampleRate = 0; 6297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int fastTracksGen = 0; 6397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten long periodNs = 0; // expected period; the time required to render one mix buffer 64288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten long underrunNs = 0; // underrun likely when write cycle is greater than this value 65288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten long overrunNs = 0; // overrun likely when write cycle is less than this value 66288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten long warmupNs = 0; // warmup complete when write cycle is greater than to this value 6797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten FastMixerDumpState dummyDumpState, *dumpState = &dummyDumpState; 6897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten bool ignoreNextOverrun = true; // used to ignore initial overrun and first after an underrun 6997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#ifdef FAST_MIXER_STATISTICS 7042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten struct timespec oldLoad = {0, 0}; // previous value of clock_gettime(CLOCK_THREAD_CPUTIME_ID) 7142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten bool oldLoadValid = false; // whether oldLoad is valid 7242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t bounds = 0; 7342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten bool full = false; // whether we have collected at least kSamplingN samples 7442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten ThreadCpuUsage tcu; // for reading the current CPU clock frequency in kHz 7597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 7697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned coldGen = 0; // last observed mColdGen 77288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten bool isWarm = false; // true means ready to mix, false means wait for warmup before mixing 78288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten struct timespec measuredWarmupTs = {0, 0}; // how long did it take for warmup to complete 79288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten uint32_t warmupCycles = 0; // counter of number of loop cycles required to warmup 8097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 8197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten for (;;) { 8297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 8397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // either nanosleep, sched_yield, or busy wait 8497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (sleepNs >= 0) { 8597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (sleepNs > 0) { 8697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(sleepNs < 1000000000); 8797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const struct timespec req = {0, sleepNs}; 8897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten nanosleep(&req, NULL); 8997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 9097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sched_yield(); 9197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 9297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 9397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // default to long sleep for next cycle 9497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = FAST_DEFAULT_NS; 9597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 9697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // poll for state change 9797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const FastMixerState *next = mSQ.poll(); 9897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (next == NULL) { 9997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // continue to use the default initial state until a real state is available 10097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(current == &initial && previous == &initial); 10197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten next = current; 10297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 10397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 10497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten FastMixerState::Command command = next->mCommand; 10597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (next != current) { 10697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 10797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // As soon as possible of learning of a new dump area, start using it 10897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState = next->mDumpState != NULL ? next->mDumpState : &dummyDumpState; 10997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 11097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // We want to always have a valid reference to the previous (non-idle) state. 11197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // However, the state queue only guarantees access to current and previous states. 11297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // So when there is a transition from a non-idle state into an idle state, we make a 11397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // copy of the last known non-idle state so it is still available on return from idle. 11497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // The possible transitions are: 11597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // non-idle -> non-idle update previous from current in-place 11697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // non-idle -> idle update previous from copy of current 11797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // idle -> idle don't update previous 11897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // idle -> non-idle don't update previous 11997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (!(current->mCommand & FastMixerState::IDLE)) { 12097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (command & FastMixerState::IDLE) { 12197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten preIdle = *current; 12297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten current = &preIdle; 12397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten oldTsValid = false; 12442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten oldLoadValid = false; 12597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ignoreNextOverrun = true; 12697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 12797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten previous = current; 12897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 12997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten current = next; 13097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 13197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#if !LOG_NDEBUG 13297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten next = NULL; // not referenced again 13397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 13497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 13597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mCommand = command; 13697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 13797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten switch (command) { 13897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::INITIAL: 13997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::HOT_IDLE: 14097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = FAST_HOT_IDLE_NS; 14197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten continue; 14297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::COLD_IDLE: 14397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // only perform a cold idle command once 14421e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten // FIXME consider checking previous state and only perform if previous != COLD_IDLE 14597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (current->mColdGen != coldGen) { 14697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int32_t *coldFutexAddr = current->mColdFutexAddr; 14797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(coldFutexAddr != NULL); 14897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int32_t old = android_atomic_dec(coldFutexAddr); 14997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (old <= 0) { 15097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten __futex_syscall4(coldFutexAddr, FUTEX_WAIT_PRIVATE, old - 1, NULL); 15197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 152288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // This may be overly conservative; there could be times that the normal mixer 153288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // requests such a brief cold idle that it doesn't require resetting this flag. 154288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten isWarm = false; 155288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten measuredWarmupTs.tv_sec = 0; 156288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten measuredWarmupTs.tv_nsec = 0; 157288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten warmupCycles = 0; 15897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = -1; 15997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten coldGen = current->mColdGen; 16042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten bounds = 0; 16142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten full = false; 16297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 16397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = FAST_HOT_IDLE_NS; 16497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 16597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten continue; 16697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::EXIT: 16797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten delete mixer; 16897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten delete[] mixBuffer; 16997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten return false; 17097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::MIX: 17197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::WRITE: 17297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::MIX_WRITE: 17397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 17497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten default: 17597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten LOG_FATAL("bad command %d", command); 17697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 17797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 17897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // there is a non-idle state available to us; did the state change? 17997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten size_t frameCount = current->mFrameCount; 18097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (current != previous) { 18197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 18297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // handle state change here, but since we want to diff the state, 18397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // we're prepared for previous == &initial the first time through 18497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned previousTrackMask; 18597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 18697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // check for change in output HAL configuration 18797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten NBAIO_Format previousFormat = format; 18897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (current->mOutputSinkGen != outputSinkGen) { 18997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten outputSink = current->mOutputSink; 19097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten outputSinkGen = current->mOutputSinkGen; 19197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (outputSink == NULL) { 19297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten format = Format_Invalid; 19397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sampleRate = 0; 19497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 19597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten format = outputSink->format(); 19697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sampleRate = Format_sampleRate(format); 19797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(Format_channelCount(format) == 2); 19897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 19921e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten dumpState->mSampleRate = sampleRate; 20097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 20197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 20297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if ((format != previousFormat) || (frameCount != previous->mFrameCount)) { 20397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME to avoid priority inversion, don't delete here 20497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten delete mixer; 20597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer = NULL; 20697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten delete[] mixBuffer; 20797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixBuffer = NULL; 20897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (frameCount > 0 && sampleRate > 0) { 20997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME new may block for unbounded time at internal mutex of the heap 21097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // implementation; it would be better to have normal mixer allocate for us 21197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // to avoid blocking here and to prevent possible priority inversion 21297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer = new AudioMixer(frameCount, sampleRate, FastMixerState::kMaxFastTracks); 21397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixBuffer = new short[frameCount * 2]; 21497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten periodNs = (frameCount * 1000000000LL) / sampleRate; // 1.00 21597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten underrunNs = (frameCount * 1750000000LL) / sampleRate; // 1.75 21697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten overrunNs = (frameCount * 250000000LL) / sampleRate; // 0.25 217288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten warmupNs = (frameCount * 500000000LL) / sampleRate; // 0.50 21897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 21997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten periodNs = 0; 22097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten underrunNs = 0; 22197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten overrunNs = 0; 22297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 22397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixBufferState = UNDEFINED; 22497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#if !LOG_NDEBUG 22597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten for (i = 0; i < FastMixerState::kMaxFastTracks; ++i) { 22697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fastTrackNames[i] = -1; 22797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 22897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 22997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // we need to reconfigure all active tracks 23097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten previousTrackMask = 0; 23197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fastTracksGen = current->mFastTracksGen - 1; 23221e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten dumpState->mFrameCount = frameCount; 23397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 23497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten previousTrackMask = previous->mTrackMask; 23597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 23697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 23797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // check for change in active track set 23897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned currentTrackMask = current->mTrackMask; 23997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (current->mFastTracksGen != fastTracksGen) { 24097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(mixBuffer != NULL); 24197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int name; 24297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 24397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // process removed tracks first to avoid running out of track names 24497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned removedTracks = previousTrackMask & ~currentTrackMask; 24597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten while (removedTracks != 0) { 24697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten i = __builtin_ctz(removedTracks); 24797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten removedTracks &= ~(1 << i); 24897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const FastTrack* fastTrack = ¤t->mFastTracks[i]; 249288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten ALOG_ASSERT(fastTrack->mBufferProvider == NULL); 25097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (mixer != NULL) { 25197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten name = fastTrackNames[i]; 25297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(name >= 0); 25397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->deleteTrackName(name); 25497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 25597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#if !LOG_NDEBUG 25697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fastTrackNames[i] = -1; 25797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 258288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // don't reset track dump state, since other side is ignoring it 25997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten generations[i] = fastTrack->mGeneration; 26097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 26197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 26297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // now process added tracks 26397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned addedTracks = currentTrackMask & ~previousTrackMask; 26497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten while (addedTracks != 0) { 26597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten i = __builtin_ctz(addedTracks); 26697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten addedTracks &= ~(1 << i); 26797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const FastTrack* fastTrack = ¤t->mFastTracks[i]; 26897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten AudioBufferProvider *bufferProvider = fastTrack->mBufferProvider; 26997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(bufferProvider != NULL && fastTrackNames[i] == -1); 27097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (mixer != NULL) { 2719bd23229fdec1657398abc682ccccfce1c95f8aaJean-Michel Trivi // calling getTrackName with default channel mask 2729bd23229fdec1657398abc682ccccfce1c95f8aaJean-Michel Trivi name = mixer->getTrackName(AUDIO_CHANNEL_OUT_STEREO); 27397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(name >= 0); 27497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fastTrackNames[i] = name; 27597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setBufferProvider(name, bufferProvider); 27697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::MAIN_BUFFER, 27797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (void *) mixBuffer); 27897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // newly allocated track names default to full scale volume 27921e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten if (fastTrack->mSampleRate != 0 && fastTrack->mSampleRate != sampleRate) { 28021e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mixer->setParameter(name, AudioMixer::RESAMPLE, 28121e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten AudioMixer::SAMPLE_RATE, (void*) fastTrack->mSampleRate); 28221e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten } 28321e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::CHANNEL_MASK, 28421e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten (void *) fastTrack->mChannelMask); 28597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->enable(name); 28697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 28797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten generations[i] = fastTrack->mGeneration; 28897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 28997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 29097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // finally process modified tracks; these use the same slot 29197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // but may have a different buffer provider or volume provider 29297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten unsigned modifiedTracks = currentTrackMask & previousTrackMask; 29397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten while (modifiedTracks != 0) { 29497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten i = __builtin_ctz(modifiedTracks); 29597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten modifiedTracks &= ~(1 << i); 29697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const FastTrack* fastTrack = ¤t->mFastTracks[i]; 29797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (fastTrack->mGeneration != generations[i]) { 29897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten AudioBufferProvider *bufferProvider = fastTrack->mBufferProvider; 29997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(bufferProvider != NULL); 30097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (mixer != NULL) { 30197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten name = fastTrackNames[i]; 30297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(name >= 0); 30397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setBufferProvider(name, bufferProvider); 30497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (fastTrack->mVolumeProvider == NULL) { 30597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME0, 30697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (void *)0x1000); 30797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME1, 30897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (void *)0x1000); 30997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 31021e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten if (fastTrack->mSampleRate != 0 && 31121e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten fastTrack->mSampleRate != sampleRate) { 31221e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mixer->setParameter(name, AudioMixer::RESAMPLE, 31321e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten AudioMixer::SAMPLE_RATE, (void*) fastTrack->mSampleRate); 31421e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten } else { 31521e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mixer->setParameter(name, AudioMixer::RESAMPLE, 31621e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten AudioMixer::REMOVE, NULL); 31721e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten } 31821e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mixer->setParameter(name, AudioMixer::TRACK, AudioMixer::CHANNEL_MASK, 31921e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten (void *) fastTrack->mChannelMask); 32097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // already enabled 32197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 32297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten generations[i] = fastTrack->mGeneration; 32397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 32497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 32597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 32697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fastTracksGen = current->mFastTracksGen; 32797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 32897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mNumTracks = popcount(currentTrackMask); 32997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 33097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 33197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#if 1 // FIXME shouldn't need this 33297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // only process state change once 33397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten previous = current; 33497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 33597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 33697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 33797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // do work using current state here 338288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten if ((command & FastMixerState::MIX) && (mixer != NULL) && isWarm) { 33997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(mixBuffer != NULL); 340288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // for each track, update volume and check for underrun 341288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten unsigned currentTrackMask = current->mTrackMask; 342288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten while (currentTrackMask != 0) { 343288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten i = __builtin_ctz(currentTrackMask); 344288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten currentTrackMask &= ~(1 << i); 34597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten const FastTrack* fastTrack = ¤t->mFastTracks[i]; 34697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int name = fastTrackNames[i]; 34797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOG_ASSERT(name >= 0); 34897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (fastTrack->mVolumeProvider != NULL) { 34997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten uint32_t vlr = fastTrack->mVolumeProvider->getVolumeLR(); 35097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME0, 35197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (void *)(vlr & 0xFFFF)); 35297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->setParameter(name, AudioMixer::VOLUME, AudioMixer::VOLUME1, 35397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (void *)(vlr >> 16)); 35497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 355288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // FIXME The current implementation of framesReady() for fast tracks 356288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // takes a tryLock, which can block 357288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // up to 1 ms. If enough active tracks all blocked in sequence, this would result 358288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // in the overall fast mix cycle being delayed. Should use a non-blocking FIFO. 359288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten size_t framesReady = fastTrack->mBufferProvider->framesReady(); 36099c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER) 36199c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten // I wish we had formatted trace names 36299c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten char traceName[16]; 36399c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten strcpy(traceName, "framesReady"); 36499c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten traceName[11] = i + (i < 10 ? '0' : 'A' - 10); 36599c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten traceName[12] = '\0'; 36699c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten ATRACE_INT(traceName, framesReady); 36799c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#endif 368288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten FastTrackDump *ftDump = &dumpState->mTracks[i]; 36909474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten FastTrackUnderruns underruns = ftDump->mUnderruns; 370288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten if (framesReady < frameCount) { 371288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten if (framesReady == 0) { 37209474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten underruns.mBitFields.mEmpty++; 37309474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten underruns.mBitFields.mMostRecent = UNDERRUN_EMPTY; 374288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten mixer->disable(name); 375288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten } else { 376288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // allow mixing partial buffer 37709474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten underruns.mBitFields.mPartial++; 37809474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten underruns.mBitFields.mMostRecent = UNDERRUN_PARTIAL; 379288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten mixer->enable(name); 380288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten } 38109474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten } else { 38209474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten underruns.mBitFields.mFull++; 38309474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten underruns.mBitFields.mMostRecent = UNDERRUN_FULL; 384288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten mixer->enable(name); 385288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten } 38609474df67278c0cd621b57c4aef1deaec4d8447fGlenn Kasten ftDump->mUnderruns = underruns; 38797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 38897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // process() is CPU-bound 38997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixer->process(AudioBufferProvider::kInvalidPTS); 39097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixBufferState = MIXED; 39197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else if (mixBufferState == MIXED) { 39297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixBufferState = UNDEFINED; 39397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 394288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten bool attemptedWrite = false; 395288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten //bool didFullWrite = false; // dumpsys could display a count of partial writes 39697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if ((command & FastMixerState::WRITE) && (outputSink != NULL) && (mixBuffer != NULL)) { 39797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (mixBufferState == UNDEFINED) { 39897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten memset(mixBuffer, 0, frameCount * 2 * sizeof(short)); 39997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mixBufferState = ZEROED; 40097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 40197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME write() is non-blocking and lock-free for a properly implemented NBAIO sink, 40297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // but this code should be modified to handle both non-blocking and blocking sinks 40397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mWriteSequence++; 40499c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER) 405d8e6fd35ec2b59ee7d873daf1f1d9d348221c7bcGlenn Kasten Tracer::traceBegin(ATRACE_TAG, "write"); 40699c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#endif 40797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ssize_t framesWritten = outputSink->write(mixBuffer, frameCount); 40899c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER) 409d8e6fd35ec2b59ee7d873daf1f1d9d348221c7bcGlenn Kasten Tracer::traceEnd(ATRACE_TAG); 41099c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#endif 41197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mWriteSequence++; 41297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (framesWritten >= 0) { 413288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten ALOG_ASSERT(framesWritten <= frameCount); 41497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mFramesWritten += framesWritten; 415288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten //if ((size_t) framesWritten == frameCount) { 416288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // didFullWrite = true; 417288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten //} 41897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 41997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mWriteErrors++; 42097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 421288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten attemptedWrite = true; 42297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME count # of writes blocked excessively, CPU usage, etc. for dump 42397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 42497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 42597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // To be exactly periodic, compute the next sleep time based on current time. 42697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // This code doesn't have long-term stability when the sink is non-blocking. 42797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME To avoid drift, use the local audio clock or watch the sink's fill status. 42897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten struct timespec newTs; 42997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten int rc = clock_gettime(CLOCK_MONOTONIC, &newTs); 43097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (rc == 0) { 43197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (oldTsValid) { 43297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten time_t sec = newTs.tv_sec - oldTs.tv_sec; 43397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten long nsec = newTs.tv_nsec - oldTs.tv_nsec; 43497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (nsec < 0) { 43597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten --sec; 43697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten nsec += 1000000000; 43797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 438288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // To avoid an initial underrun on fast tracks after exiting standby, 439288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // do not start pulling data from tracks and mixing until warmup is complete. 440288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // Warmup is considered complete after the earlier of: 441288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // first successful single write() that blocks for more than warmupNs 442288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // MAX_WARMUP_CYCLES write() attempts. 443288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten // This is overly conservative, but to get better accuracy requires a new HAL API. 444288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten if (!isWarm && attemptedWrite) { 445288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten measuredWarmupTs.tv_sec += sec; 446288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten measuredWarmupTs.tv_nsec += nsec; 447288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten if (measuredWarmupTs.tv_nsec >= 1000000000) { 448288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten measuredWarmupTs.tv_sec++; 449288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten measuredWarmupTs.tv_nsec -= 1000000000; 450288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten } 451288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten ++warmupCycles; 452288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten if ((attemptedWrite && nsec > warmupNs) || 453288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten (warmupCycles >= MAX_WARMUP_CYCLES)) { 454288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten isWarm = true; 455288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten dumpState->mMeasuredWarmupTs = measuredWarmupTs; 456288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten dumpState->mWarmupCycles = warmupCycles; 457288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten } 458288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten } 45997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (sec > 0 || nsec > underrunNs) { 46099c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER) 461d8e6fd35ec2b59ee7d873daf1f1d9d348221c7bcGlenn Kasten ScopedTrace st(ATRACE_TAG, "underrun"); 46299c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#endif 46397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME only log occasionally 46497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOGV("underrun: time since last cycle %d.%03ld sec", 46597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (int) sec, nsec / 1000000L); 46697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mUnderruns++; 46797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = -1; 46897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ignoreNextOverrun = true; 46997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else if (nsec < overrunNs) { 47097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten if (ignoreNextOverrun) { 47197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ignoreNextOverrun = false; 47297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 47397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // FIXME only log occasionally 47497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ALOGV("overrun: time since last cycle %d.%03ld sec", 47597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten (int) sec, nsec / 1000000L); 47697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten dumpState->mOverruns++; 47797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 47897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = periodNs - overrunNs; 47997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 48097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = -1; 48197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ignoreNextOverrun = false; 48297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 48397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#ifdef FAST_MIXER_STATISTICS 48442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // advance the FIFO queue bounds 48542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten size_t i = bounds & (FastMixerDumpState::kSamplingN - 1); 486e58ccce45598bcf4b4874b0e87cd1eb8d05ba9a9Glenn Kasten bounds = (bounds & 0xFFFF0000) | ((bounds + 1) & 0xFFFF); 48742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (full) { 48842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten bounds += 0x10000; 48942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } else if (!(bounds & (FastMixerDumpState::kSamplingN - 1))) { 49042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten full = true; 49197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 49242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // compute the delta value of clock_gettime(CLOCK_MONOTONIC) 49342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t monotonicNs = nsec; 49442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (sec > 0 && sec < 4) { 49542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten monotonicNs += sec * 1000000000; 49642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 49742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // compute the raw CPU load = delta value of clock_gettime(CLOCK_THREAD_CPUTIME_ID) 49842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t loadNs = 0; 49942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten struct timespec newLoad; 50042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten rc = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &newLoad); 50142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (rc == 0) { 50242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (oldLoadValid) { 50342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten sec = newLoad.tv_sec - oldLoad.tv_sec; 50442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten nsec = newLoad.tv_nsec - oldLoad.tv_nsec; 50542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (nsec < 0) { 50642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten --sec; 50742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten nsec += 1000000000; 50842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 50942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten loadNs = nsec; 51042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (sec > 0 && sec < 4) { 51142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten loadNs += sec * 1000000000; 51242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 51342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } else { 51442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // first time through the loop 51542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten oldLoadValid = true; 51642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 51742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten oldLoad = newLoad; 51842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 51942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // get the absolute value of CPU clock frequency in kHz 52042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten int cpuNum = sched_getcpu(); 52142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t kHz = tcu.getCpukHz(cpuNum); 522c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten kHz = (kHz << 4) | (cpuNum & 0xF); 52342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // save values in FIFO queues for dumpsys 52442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // these stores #1, #2, #3 are not atomic with respect to each other, 52542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // or with respect to store #4 below 52642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten dumpState->mMonotonicNs[i] = monotonicNs; 52742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten dumpState->mLoadNs[i] = loadNs; 52842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten dumpState->mCpukHz[i] = kHz; 52942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // this store #4 is not atomic with respect to stores #1, #2, #3 above, but 53042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // the newest open and oldest closed halves are atomic with respect to each other 53142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten dumpState->mBounds = bounds; 53299c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER) 53399c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten ATRACE_INT("cycle_ms", monotonicNs / 1000000); 53499c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten ATRACE_INT("load_us", loadNs / 1000); 53599c99d00beb43b939dedc9ffb07adb89f6a85ba5Glenn Kasten#endif 53697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 53797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 53897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // first time through the loop 53997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten oldTsValid = true; 54097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = periodNs; 54197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten ignoreNextOverrun = true; 54297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 54397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten oldTs = newTs; 54497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } else { 54597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // monotonic clock is broken 54697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten oldTsValid = false; 54797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten sleepNs = periodNs; 54897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 54997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 55042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten 55197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } // for (;;) 55297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 55397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten // never return 'true'; Thread::_threadLoop() locks mutex which can result in priority inversion 55497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten} 55597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 55697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn KastenFastMixerDumpState::FastMixerDumpState() : 55797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten mCommand(FastMixerState::INITIAL), mWriteSequence(0), mFramesWritten(0), 55821e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mNumTracks(0), mWriteErrors(0), mUnderruns(0), mOverruns(0), 559288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten mSampleRate(0), mFrameCount(0), /* mMeasuredWarmupTs({0, 0}), */ mWarmupCycles(0) 56097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#ifdef FAST_MIXER_STATISTICS 56142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten , mBounds(0) 56297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 56397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten{ 564288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten mMeasuredWarmupTs.tv_sec = 0; 565288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten mMeasuredWarmupTs.tv_nsec = 0; 56642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // sample arrays aren't accessed atomically with respect to the bounds, 56742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // so clearing reduces chance for dumpsys to read random uninitialized samples 56842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten memset(&mMonotonicNs, 0, sizeof(mMonotonicNs)); 56942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten memset(&mLoadNs, 0, sizeof(mLoadNs)); 57042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten memset(&mCpukHz, 0, sizeof(mCpukHz)); 57197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten} 57297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 57397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn KastenFastMixerDumpState::~FastMixerDumpState() 57497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten{ 57597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten} 57697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 57797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kastenvoid FastMixerDumpState::dump(int fd) 57897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten{ 57997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#define COMMAND_MAX 32 58097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten char string[COMMAND_MAX]; 58197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten switch (mCommand) { 58297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::INITIAL: 58397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "INITIAL"); 58497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 58597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::HOT_IDLE: 58697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "HOT_IDLE"); 58797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 58897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::COLD_IDLE: 58997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "COLD_IDLE"); 59097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 59197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::EXIT: 59297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "EXIT"); 59397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 59497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::MIX: 59597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "MIX"); 59697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 59797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::WRITE: 59897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "WRITE"); 59997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 60097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten case FastMixerState::MIX_WRITE: 60197b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten strcpy(string, "MIX_WRITE"); 60297b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 60397b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten default: 60497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten snprintf(string, COMMAND_MAX, "%d", mCommand); 60597b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten break; 60697b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten } 60742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten double measuredWarmupMs = (mMeasuredWarmupTs.tv_sec * 1000.0) + 608288ed2103d96f3aabd7e6bea3c080ab6db164049Glenn Kasten (mMeasuredWarmupTs.tv_nsec / 1000000.0); 60942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten double mixPeriodSec = (double) mFrameCount / (double) mSampleRate; 61097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten fdprintf(fd, "FastMixer command=%s writeSequence=%u framesWritten=%u\n" 61121e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten " numTracks=%u writeErrors=%u underruns=%u overruns=%u\n" 61242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten " sampleRate=%u frameCount=%u measuredWarmup=%.3g ms, warmupCycles=%u\n" 61342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten " mixPeriod=%.2f ms\n", 61497b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten string, mWriteSequence, mFramesWritten, 61521e8c50bd13ebe44f3088e26c9c6df0e163c469cGlenn Kasten mNumTracks, mWriteErrors, mUnderruns, mOverruns, 61642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten mSampleRate, mFrameCount, measuredWarmupMs, mWarmupCycles, 61742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten mixPeriodSec * 1e3); 61897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#ifdef FAST_MIXER_STATISTICS 61942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // find the interval of valid samples 62042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t bounds = mBounds; 62142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t newestOpen = bounds & 0xFFFF; 62242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t oldestClosed = bounds >> 16; 62342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t n = (newestOpen - oldestClosed) & 0xFFFF; 62442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten if (n > kSamplingN) { 62542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten ALOGE("too many samples %u", n); 62642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten n = kSamplingN; 62742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 62842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // statistics for monotonic (wall clock) time, thread raw CPU load in time, CPU clock frequency, 62942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // and adjusted CPU load in MHz normalized for CPU clock frequency 63042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten CentralTendencyStatistics wall, loadNs, kHz, loadMHz; 63142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // only compute adjusted CPU load in Hz if current CPU number and CPU clock frequency are stable 63242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten bool valid = false; 63342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t previousCpukHz = 0; 63442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten // loop over all the samples 63542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten for (; n > 0; --n) { 63642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten size_t i = oldestClosed++ & (kSamplingN - 1); 63742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t wallNs = mMonotonicNs[i]; 63842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten wall.sample(wallNs); 63942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t sampleLoadNs = mLoadNs[i]; 64042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten uint32_t sampleCpukHz = mCpukHz[i]; 64142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten loadNs.sample(sampleLoadNs); 642c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten // skip bad kHz samples 643c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten if ((sampleCpukHz & ~0xF) != 0) { 644c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten kHz.sample(sampleCpukHz >> 4); 645c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten if (sampleCpukHz == previousCpukHz) { 646c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten double megacycles = (double) sampleLoadNs * (double) (sampleCpukHz >> 4) * 1e-12; 647c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten double adjMHz = megacycles / mixPeriodSec; // _not_ wallNs * 1e9 648c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten loadMHz.sample(adjMHz); 649c059bd4246c1b3944965be921e5b334d51cd236cGlenn Kasten } 65042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 65142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten previousCpukHz = sampleCpukHz; 65242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten } 65342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten fdprintf(fd, "Simple moving statistics over last %.1f seconds:\n", wall.n() * mixPeriodSec); 65442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten fdprintf(fd, " wall clock time in ms per mix cycle:\n" 65542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten " mean=%.2f min=%.2f max=%.2f stddev=%.2f\n", 65642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten wall.mean()*1e-6, wall.minimum()*1e-6, wall.maximum()*1e-6, wall.stddev()*1e-6); 65742d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten fdprintf(fd, " raw CPU load in us per mix cycle:\n" 65842d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten " mean=%.0f min=%.0f max=%.0f stddev=%.0f\n", 65942d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten loadNs.mean()*1e-3, loadNs.minimum()*1e-3, loadNs.maximum()*1e-3, 66042d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten loadNs.stddev()*1e-3); 66142d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten fdprintf(fd, " CPU clock frequency in MHz:\n" 66242d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten " mean=%.0f min=%.0f max=%.0f stddev=%.0f\n", 66342d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten kHz.mean()*1e-3, kHz.minimum()*1e-3, kHz.maximum()*1e-3, kHz.stddev()*1e-3); 66442d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten fdprintf(fd, " adjusted CPU load in MHz (i.e. normalized for CPU clock frequency):\n" 66542d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten " mean=%.1f min=%.1f max=%.1f stddev=%.1f\n", 66642d45cfd0c3d62357a6549c62f535e4d4fe08d91Glenn Kasten loadMHz.mean(), loadMHz.minimum(), loadMHz.maximum(), loadMHz.stddev()); 66797b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten#endif 66897b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten} 66997b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten 67097b5d0d5b5ef766eb5dd680d05a5d199662d4ae0Glenn Kasten} // namespace android 671