AudioTrackShared.cpp revision e8972b0a27fac327c997fceb20d9abae1dc1d899
1a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten/* 2a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * Copyright (C) 2007 The Android Open Source Project 3a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * 4a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * Licensed under the Apache License, Version 2.0 (the "License"); 5a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * you may not use this file except in compliance with the License. 6a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * You may obtain a copy of the License at 7a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * 8a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * http://www.apache.org/licenses/LICENSE-2.0 9a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * 10a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * Unless required by applicable law or agreed to in writing, software 11a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * distributed under the License is distributed on an "AS IS" BASIS, 12a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * See the License for the specific language governing permissions and 14a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten * limitations under the License. 15a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten */ 16a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 17a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten#define LOG_TAG "AudioTrackShared" 18a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten//#define LOG_NDEBUG 0 19a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 20a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten#include <private/media/AudioTrackShared.h> 21a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten#include <utils/Log.h> 22ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 23ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes#include <linux/futex.h> 24ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes#include <sys/syscall.h> 25a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 26a8190fc518b6769257896605f3aee091aeb60b50Glenn Kastennamespace android { 27a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 28cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung// used to clamp a value to size_t. TODO: move to another file. 29cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hungtemplate <typename T> 30cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hungsize_t clampToSize(T x) { 31486a7135593b4b40c067e9b06f393577abfef482Andy Hung return sizeof(T) > sizeof(size_t) && x > (T) SIZE_MAX ? SIZE_MAX : x < 0 ? 0 : (size_t) x; 32cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung} 33cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung 349b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung// incrementSequence is used to determine the next sequence value 359b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung// for the loop and position sequence counters. It should return 369b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung// a value between "other" + 1 and "other" + INT32_MAX, the choice of 379b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung// which needs to be the "least recently used" sequence value for "self". 389b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung// In general, this means (new_self) returned is max(self, other) + 1. 399b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 409b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungstatic uint32_t incrementSequence(uint32_t self, uint32_t other) { 41cb50c54b31a83ac598530780fa8c145a3cb4a2deChad Brubaker int32_t diff = (int32_t) self - (int32_t) other; 429b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (diff >= 0 && diff < INT32_MAX) { 439b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return self + 1; // we're already ahead of other. 449b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 459b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return other + 1; // we're behind, so move just ahead of other. 469b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 479b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 48a8190fc518b6769257896605f3aee091aeb60b50Glenn Kastenaudio_track_cblk_t::audio_track_cblk_t() 49e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk : mServer(0), mFutex(0), mMinimum(0) 50e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk , mVolumeLR(GAIN_MINIFLOAT_PACKED_UNITY), mSampleRate(0), mSendLevel(0) 51e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk , mBufferSizeInFrames(0) 52e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk , mFlags(0) 53a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten memset(&u, 0, sizeof(u)); 55a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 56a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenProxy::Proxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, size_t frameSize, 609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool isOut, bool clientInServer) 619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : mCblk(cblk), mBuffers(buffers), mFrameCount(frameCount), mFrameSize(frameSize), 629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFrameCountP2(roundup(frameCount)), mIsOut(isOut), mClientInServer(clientInServer), 637db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mIsShutdown(false), mUnreleased(0) 64a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 66a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenClientProxy::ClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 71c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer) 72c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk , mEpoch(0) 736ae5843c281301a9ffd1059d185620a9337e15a2Andy Hung , mTimestampObserver(&cblk->mExtendedTimestampQueue) 749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 75e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk setBufferSizeInFrames(frameCount); 769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenconst struct timespec ClientProxy::kForever = {INT_MAX /*tv_sec*/, 0 /*tv_nsec*/}; 799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenconst struct timespec ClientProxy::kNonBlocking = {0 /*tv_sec*/, 0 /*tv_nsec*/}; 809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#define MEASURE_NS 10000000 // attempt to provide accurate timeouts if requested >= MEASURE_NS 829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// To facilitate quicker recovery from server failure, this value limits the timeout per each futex 849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// wait. However it does not protect infinite timeouts. If defined to be zero, there is no limit. 859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// FIXME May not be compatible with audio tunneling requirements where timeout should be in the 869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// order of minutes. 879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#define MAX_SEC 5 889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 89e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burkuint32_t ClientProxy::setBufferSizeInFrames(uint32_t size) 90e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk{ 91e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk // TODO set minimum to 2X the fast mixer buffer size. 92e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk // The minimum should be greater than zero and less than the size 93e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk // at which underruns will occur. 94e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk const uint32_t minimum = 128 * 2; // arbitrary 95e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk const uint32_t maximum = frameCount(); 96e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk uint32_t clippedSize = size; 97e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk if (clippedSize < minimum) { 98e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk clippedSize = minimum; 99e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk } else if (clippedSize > maximum) { 100e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk clippedSize = maximum; 101e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk } 102e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk // for server to read 103e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk android_atomic_release_store(clippedSize, (int32_t *)&mCblk->mBufferSizeInFrames); 104e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk // for client to read 105e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk mBufferSizeInFrames = clippedSize; 106e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk return clippedSize; 107e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk} 108e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk 1099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenstatus_t ClientProxy::obtainBuffer(Buffer* buffer, const struct timespec *requested, 1109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec *elapsed) 1119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 1127db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 1139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec total; // total elapsed time spent waiting 1149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec = 0; 1159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec = 0; 1169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool measure = elapsed != NULL; // whether to measure total elapsed time spent waiting 117a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 1189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t status; 1199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum { 1209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_ZERO, // requested == NULL || *requested == 0 1219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_INFINITE, // *requested == infinity 1229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_FINITE, // 0 < *requested < infinity 1239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 1249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } timeout; 1259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 1269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_ZERO; 1279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 1289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_ZERO; 1299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (requested->tv_sec == INT_MAX) { 1309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_INFINITE; 1319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_FINITE; 1339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested->tv_sec > 0 || requested->tv_nsec >= MEASURE_NS) { 1349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten measure = true; 1359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec before; 1389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool beforeIsValid = false; 1399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 1409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool ignoreInitialPendingInterrupt = true; 1419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for shared memory corruption 1429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 1439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_INIT; 1449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten for (;;) { 14796f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~CBLK_INTERRUPT, &cblk->mFlags); 1489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for track invalidation by server, or server death detection 1499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flags & CBLK_INVALID) { 1509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("Track invalidated"); 1519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = DEAD_OBJECT; 1529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for obtainBuffer interrupted by client 1559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!ignoreInitialPendingInterrupt && (flags & CBLK_INTERRUPT)) { 1569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("obtainBuffer() interrupted by client"); 1579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = -EINTR; 1589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ignoreInitialPendingInterrupt = false; 1619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord) 1629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 1639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 1649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 1659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The barrier following the read of mFront is probably redundant. 1669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // We're about to perform a conditional branch based on 'filled', 1679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // which will force the processor to observe the read of mFront 1689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // prior to allowing data writes starting at mRaw. 1699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // However, the processor may support speculative execution, 1709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and be unable to undo speculative writes into shared memory. 1719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The barrier will prevent such speculative execution. 1729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 1739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 1749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // On the other hand, this barrier is required. 1769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 1779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = cblk->u.mStreaming.mFront; 1789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 179c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // write to rear, read from front 1809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 1819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not be overfull 1829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 1836dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten if (mIsOut) { 18434fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd, mFrameCount=%zu); " 1856dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten "shutting down", filled, mFrameCount); 1866dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten mIsShutdown = true; 1876dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten status = NO_INIT; 1886dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten goto end; 1896dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten } 1906dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten // for input, sync up on overrun 1916dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten filled = 0; 1926dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten cblk->u.mStreaming.mFront = rear; 1936dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten (void) android_atomic_or(CBLK_OVERRUN, &cblk->mFlags); 1949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 195c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // Don't allow filling pipe beyond the user settable size. 196c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // The calculation for avail can go negative if the buffer size 197c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // is suddenly dropped below the amount already in the buffer. 198c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // So use a signed calculation to prevent a numeric overflow abort. 199e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk ssize_t adjustableSize = (ssize_t) getBufferSizeInFrames(); 200c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk ssize_t avail = (mIsOut) ? adjustableSize - filled : filled; 201c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk if (avail < 0) { 202c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk avail = 0; 203c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk } else if (avail > 0) { 2049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'avail' may be non-contiguous, so return only the first contiguous chunk 205bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent size_t part1; 2069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 2079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 2089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 2099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 2109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 2119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 2129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 213bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent if (part1 > (size_t)avail) { 2149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = avail; 2159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 216bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent if (part1 > buffer->mFrameCount) { 2179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = buffer->mFrameCount; 2189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 219bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent buffer->mFrameCount = part1; 2209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 2219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? rear : front) * mFrameSize] : NULL; 2229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = avail - part1; 2237db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = part1; 2249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_ERROR; 2259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec remaining; 2289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten const struct timespec *ts; 2299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten switch (timeout) { 2309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_ZERO: 2319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = WOULD_BLOCK; 2329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_INFINITE: 2349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 2359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_FINITE: 2379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_CONTINUE; 2389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (MAX_SEC == 0) { 2399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = requested; 2409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // fall through 2439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_CONTINUE: 2449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 2459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!measure || requested->tv_sec < total.tv_sec || 2469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 2479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = TIMED_OUT; 2489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = requested->tv_sec - total.tv_sec; 2519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 2529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec += 1000000000; 2539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec++; 2549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 2569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = MAX_SEC; 2579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec = 0; 2589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = &remaining; 2609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 262adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("obtainBuffer() timeout=%d", timeout); 2639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 2649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2660d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 2670d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 2689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure && !beforeIsValid) { 2699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &before); 2709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 272ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes errno = 0; 273ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 2740d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 275b463da8e499149c7230b8dbd839bb7bc8ece602fLeena Winterrowd status_t error = errno; // clock_gettime can affect errno 2769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // update total elapsed time spent waiting 2779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 2789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec after; 2799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &after); 2809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec += after.tv_sec - before.tv_sec; 2819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten long deltaNs = after.tv_nsec - before.tv_nsec; 2829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (deltaNs < 0) { 2839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten deltaNs += 1000000000; 2849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec--; 2859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((total.tv_nsec += deltaNs) >= 1000000000) { 2879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec -= 1000000000; 2889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec++; 2899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten before = after; 2919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 293b463da8e499149c7230b8dbd839bb7bc8ece602fLeena Winterrowd switch (error) { 294ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case 0: // normal wakeup by server, or by binderDied() 295ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EWOULDBLOCK: // benign race condition with server 296ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EINTR: // wait was interrupted by signal or other spurious wakeup 297ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case ETIMEDOUT: // time-out expired 2987db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // FIXME these error/non-0 status are being dropped 2999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 3009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 301b463da8e499149c7230b8dbd839bb7bc8ece602fLeena Winterrowd status = error; 302ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes ALOGE("%s unexpected error %s", __func__, strerror(status)); 3039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 3049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 305a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 306a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 307a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenend: 3099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (status != NO_ERROR) { 3109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 3119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 3129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 3137db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 3149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (elapsed != NULL) { 3169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten *elapsed = total; 317a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 3189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 3199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten requested = &kNonBlocking; 3209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 322b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("requested %ld.%03ld elapsed %ld.%03ld", 323b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested->tv_sec, requested->tv_nsec / 1000000, 324b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec, total.tv_nsec / 1000000); 3259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return status; 3279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 328a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::releaseBuffer(Buffer* buffer) 3309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3317db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 3329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 3337db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 3347db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 3357db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 3367db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 3377db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 3389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 3399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3407db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 3417db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased -= stepCount; 3429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 3439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Both of these barriers are required 3449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 3459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 3469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 3479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 3489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 3499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 3509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 351a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 352a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::binderDied() 354a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 3559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 35696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INVALID, &cblk->mFlags) & CBLK_INVALID)) { 35782a69ea8b090d57bff5e02774688b546a711bbb8zunkyu.lee android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 3589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // it seems that a FUTEX_WAKE_PRIVATE will not wake a FUTEX_WAIT, even within same process 359ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 360ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 3619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 363a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::interrupt() 3659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 36796f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INTERRUPT, &cblk->mFlags) & CBLK_INTERRUPT)) { 36882a69ea8b090d57bff5e02774688b546a711bbb8zunkyu.lee android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 369ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 370ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 371a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 3729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 373a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 37465dda4f09425ad027e27a51a3108472448d3ab8bChad Brubaker__attribute__((no_sanitize("integer"))) 3759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t ClientProxy::getMisalignment() 3769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 3789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (mFrameCountP2 - (mIsOut ? cblk->u.mStreaming.mRear : cblk->u.mStreaming.mFront)) & 3799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (mFrameCountP2 - 1); 3809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 381a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 3839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 3849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid AudioTrackClientProxy::flush() 3859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 38620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // This works for mFrameCountP2 <= 2^30 38720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t increment = mFrameCountP2 << 1; 38820f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t mask = increment - 1; 38920f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten audio_track_cblk_t* cblk = mCblk; 390a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // mFlush is 32 bits concatenated as [ flush_counter ] [ newfront_offset ] 391a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // Should newFlush = cblk->u.mStreaming.mRear? Only problem is 392a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // if you want to flush twice to the same rear location after a 32 bit wrap. 39320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten int32_t newFlush = (cblk->u.mStreaming.mRear & mask) | 39420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ((cblk->u.mStreaming.mFlush & ~mask) + increment); 39520f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten android_atomic_release_store(newFlush, &cblk->u.mStreaming.mFlush); 3969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 3979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 398bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::clearStreamEndDone() { 39996f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (android_atomic_and(~CBLK_STREAM_END_DONE, &mCblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 400bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 401bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 402bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::getStreamEndDone() const { 40396f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (mCblk->mFlags & CBLK_STREAM_END_DONE) != 0; 404bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 405bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 406b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldstatus_t AudioTrackClientProxy::waitStreamEndDone(const struct timespec *requested) 407b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald{ 408b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec total; // total elapsed time spent waiting 409b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec = 0; 410b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_nsec = 0; 411b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald audio_track_cblk_t* cblk = mCblk; 412b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status_t status; 413b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald enum { 414b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_ZERO, // requested == NULL || *requested == 0 415b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_INFINITE, // *requested == infinity 416b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_FINITE, // 0 < *requested < infinity 417b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 418b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } timeout; 419b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 420b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 421b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 422b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 423b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == INT_MAX) { 424b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_INFINITE; 425b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else { 426b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_FINITE; 427b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 428b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald for (;;) { 42996f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~(CBLK_INTERRUPT|CBLK_STREAM_END_DONE), &cblk->mFlags); 430b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for track invalidation by server, or server death detection 431b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INVALID) { 432b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("Track invalidated"); 433b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = DEAD_OBJECT; 434b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 435b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 436b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_STREAM_END_DONE) { 437b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("stream end received"); 438b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = NO_ERROR; 439b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 440b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 441b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for obtainBuffer interrupted by client 442b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INTERRUPT) { 443b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("waitStreamEndDone() interrupted by client"); 444b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = -EINTR; 445b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 446b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 447b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec remaining; 448b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald const struct timespec *ts; 449b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald switch (timeout) { 450b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_ZERO: 451b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = WOULD_BLOCK; 452b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 453b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_INFINITE: 454b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 455b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 456b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_FINITE: 457b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_CONTINUE; 458b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (MAX_SEC == 0) { 459b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = requested; 460b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 461b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 462b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // fall through 463b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_CONTINUE: 464b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 465b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested->tv_sec < total.tv_sec || 466b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 467b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = TIMED_OUT; 468b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 469b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 470b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = requested->tv_sec - total.tv_sec; 471b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 472b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec += 1000000000; 473b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec++; 474b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 475b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 476b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = MAX_SEC; 477b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec = 0; 478b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 479b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = &remaining; 480b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 481b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 482adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("waitStreamEndDone() timeout=%d", timeout); 483b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 484b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 485b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 486b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 487b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 488ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes errno = 0; 489ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 490b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 491ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes switch (errno) { 492ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case 0: // normal wakeup by server, or by binderDied() 493ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EWOULDBLOCK: // benign race condition with server 494ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EINTR: // wait was interrupted by signal or other spurious wakeup 495ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case ETIMEDOUT: // time-out expired 496b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 497b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 498ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes status = errno; 499ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes ALOGE("%s unexpected error %s", __func__, strerror(status)); 500b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 501b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 502b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 503b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 504b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 505b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldend: 506b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 507b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested = &kNonBlocking; 508b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 509b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return status; 510b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald} 511b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 5129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 5139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackClientProxy::StaticAudioTrackClientProxy(audio_track_cblk_t* cblk, void *buffers, 5159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 5169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackClientProxy(cblk, buffers, frameCount, frameSize), 5174ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mMutator(&cblk->u.mStatic.mSingleStateQueue), 5184ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopObserver(&cblk->u.mStatic.mPosLoopQueue) 5199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5209b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung memset(&mState, 0, sizeof(mState)); 5214ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung memset(&mPosLoop, 0, sizeof(mPosLoop)); 5229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::flush() 5259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 526adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("static flush"); 5279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::setLoop(size_t loopStart, size_t loopEnd, int loopCount) 5309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 531fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This can only happen on a 64-bit client 532fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten if (loopStart > UINT32_MAX || loopEnd > UINT32_MAX) { 533fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // FIXME Should return an error status 534fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten return; 535fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten } 5369b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopStart = (uint32_t) loopStart; 5379b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopEnd = (uint32_t) loopEnd; 5389b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopCount = loopCount; 5399b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopSequence = incrementSequence(mState.mLoopSequence, mState.mPositionSequence); 5409b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // set patch-up variables until the mState is acknowledged by the ServerProxy. 5419b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // observed buffer position and loop count will freeze until then to give the 5429b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // illusion of a synchronous change. 5434ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung getBufferPositionAndLoopCount(NULL, NULL); 5449b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // preserve behavior to restart at mState.mLoopStart if position exceeds mState.mLoopEnd. 5454ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mState.mLoopCount != 0 && mPosLoop.mBufferPosition >= mState.mLoopEnd) { 5464ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mBufferPosition = mState.mLoopStart; 5479b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 5484ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mLoopCount = mState.mLoopCount; 5499b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung (void) mMutator.push(mState); 5509b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 5519b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 5529b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungvoid StaticAudioTrackClientProxy::setBufferPosition(size_t position) 5539b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 5549b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // This can only happen on a 64-bit client 5559b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (position > UINT32_MAX) { 5569b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // FIXME Should return an error status 5579b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return; 558680b795435a5a501a56610258dce5eda40a1725dAndy Hung } 5599b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mPosition = (uint32_t) position; 5609b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mPositionSequence = incrementSequence(mState.mPositionSequence, mState.mLoopSequence); 5614ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // set patch-up variables until the mState is acknowledged by the ServerProxy. 5624ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // observed buffer position and loop count will freeze until then to give the 5634ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // illusion of a synchronous change. 5644ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mState.mLoopCount > 0) { // only check if loop count is changing 5654ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung getBufferPositionAndLoopCount(NULL, NULL); // get last position 5664ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5674ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mBufferPosition = position; 5684ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (position >= mState.mLoopEnd) { 5694ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // no ongoing loop is possible if position is greater than loopEnd. 5704ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mLoopCount = 0; 5714ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5729b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung (void) mMutator.push(mState); 5739b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 5749b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 5759b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungvoid StaticAudioTrackClientProxy::setBufferPositionAndLoop(size_t position, size_t loopStart, 5769b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung size_t loopEnd, int loopCount) 5779b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 5789b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung setLoop(loopStart, loopEnd, loopCount); 5799b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung setBufferPosition(position); 5809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackClientProxy::getBufferPosition() 5839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5844ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung getBufferPositionAndLoopCount(NULL, NULL); 5854ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung return mPosLoop.mBufferPosition; 5864ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung} 5874ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung 5884ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hungvoid StaticAudioTrackClientProxy::getBufferPositionAndLoopCount( 5894ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung size_t *position, int *loopCount) 5904ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung{ 5914ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mMutator.ack() == StaticAudioTrackSingleStateQueue::SSQ_DONE) { 5924ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mPosLoopObserver.poll(mPosLoop)) { 5934ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung ; // a valid mPosLoop should be available if ackDone is true. 5944ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5954ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5964ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (position != NULL) { 5974ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung *position = mPosLoop.mBufferPosition; 5984ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5994ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (loopCount != NULL) { 6004ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung *loopCount = mPosLoop.mLoopCount; 601a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 6039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 605a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenServerProxy::ServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 6079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 6087db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer), 6093f0c902beb53a245c9db35e871607dba05b8d391Andy Hung mAvailToClient(0), mFlush(0), mReleased(0) 6106ae5843c281301a9ffd1059d185620a9337e15a2Andy Hung , mTimestampMutator(&cblk->mExtendedTimestampQueue) 6119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 612e8972b0a27fac327c997fceb20d9abae1dc1d899Phil Burk cblk->mBufferSizeInFrames = frameCount; 6139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 6149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6152e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kastenstatus_t ServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush) 6169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 6177db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 6189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 6197db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 6209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6217db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten { 6229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 6239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord), 6249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // or use previous cached value from framesReady(), with added barrier if it omits. 6259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 6269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 6279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // See notes on barriers at ClientProxy::obtainBuffer() 6289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t flush = cblk->u.mStreaming.mFlush; 6309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 631b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald front = cblk->u.mStreaming.mFront; 6329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flush != mFlush) { 633050501d11d944dcb256d37d3b86bd658d94f6a7fGlenn Kasten // effectively obtain then release whatever is in the buffer 634a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung const size_t overflowBit = mFrameCountP2 << 1; 635a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung const size_t mask = overflowBit - 1; 63620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten int32_t newFront = (front & ~mask) | (flush & mask); 63720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ssize_t filled = rear - newFront; 638a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung if (filled >= (ssize_t)overflowBit) { 639a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // front and rear offsets span the overflow bit of the p2 mask 640a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // so rebasing newFront on the front offset is off by the overflow bit. 641a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // adjust newFront to match rear offset. 642dbd0f3c5e15e56c2d91ae1405fecf2279785ef00Glenn Kasten ALOGV("flush wrap: filled %zx >= overflowBit %zx", filled, overflowBit); 643a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung newFront += overflowBit; 644a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung filled -= overflowBit; 645a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung } 64620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // Rather than shutting down on a corrupt flush, just treat it as a full flush 64720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 648b187de1ada34a9023c05d020a4592686ba761278Glenn Kasten ALOGE("mFlush %#x -> %#x, front %#x, rear %#x, mask %#x, newFront %#x, " 649f1063e2659cad01ec334a265c31734c63c319cc4Lajos Molnar "filled %zd=%#x", 650f1063e2659cad01ec334a265c31734c63c319cc4Lajos Molnar mFlush, flush, front, rear, 651f1063e2659cad01ec334a265c31734c63c319cc4Lajos Molnar (unsigned)mask, newFront, filled, (unsigned)filled); 65220f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten newFront = rear; 65320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten } 65420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten mFlush = flush; 65520f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten android_atomic_release_store(newFront, &cblk->u.mStreaming.mFront); 65620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // There is no danger from a false positive, so err on the side of caution 65720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten if (true /*front != newFront*/) { 658b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 659b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 660ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 661ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 662b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 663b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 66420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten front = newFront; 665a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 6689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 6699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 6719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 6729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 67334fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 6749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 6759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 6777db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 678a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // don't allow filling pipe beyond the nominal size 6809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t availToServer; 6819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = filled; 6839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = mFrameCount - filled; 6849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = mFrameCount - filled; 6869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = filled; 6879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'availToServer' may be non-contiguous, so return only the first contiguous chunk 6899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t part1; 6909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 6929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 6939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 6959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 6969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > availToServer) { 6989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = availToServer; 6999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t ask = buffer->mFrameCount; 7019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > ask) { 7029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = ask; 7039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // is assignment redundant in some cases? 7059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = part1; 7069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 7079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? front : rear) * mFrameSize] : NULL; 7089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = availToServer - part1; 7092e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten // After flush(), allow releaseBuffer() on a previously obtained buffer; 7102e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten // see "Acknowledge any pending flush()" in audioflinger/Tracks.cpp. 7112e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten if (!ackFlush) { 7122e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten mUnreleased = part1; 7132e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten } 7149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return part1 > 0 ? NO_ERROR : WOULD_BLOCK; 7157db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten } 7167db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kastenno_init: 7177db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 7187db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 7197db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 7207db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 7217db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten return NO_INIT; 7229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 723a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ServerProxy::releaseBuffer(Buffer* buffer) 7259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 7267db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 7279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 7287db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 7297db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 7307db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 7319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 7339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 7349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7357db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 7369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 7379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 7389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 7399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 7409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 7419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 7439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 744a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 745a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 746844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten cblk->mServer += stepCount; 7473f0c902beb53a245c9db35e871607dba05b8d391Andy Hung mReleased += stepCount; 748a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t half = mFrameCount / 2; 7509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (half == 0) { 7519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten half = 1; 7529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 753fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten size_t minimum = (size_t) cblk->mMinimum; 7549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (minimum == 0) { 7559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = mIsOut ? half : 1; 7569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (minimum > half) { 7579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = half; 7589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 75993bb77da5481ab75c2cd6e3aa681839273c6e43dGlenn Kasten // FIXME AudioRecord wakeup needs to be optimized; it currently wakes up client every time 760ce8828a016b082f730152af2204b8ea3610dc1ecGlenn Kasten if (!mIsOut || (mAvailToClient + stepCount >= minimum)) { 76134fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGV("mAvailToClient=%zu stepCount=%zu minimum=%zu", mAvailToClient, stepCount, minimum); 7620d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 7630d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 764ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 765ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 7669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 767a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 7709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 772a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 773a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 7759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t AudioTrackServerProxy::framesReady() 777a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten LOG_ALWAYS_FATAL_IF(!mIsOut); 7799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 7819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 7829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 784b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 785b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t flush = cblk->u.mStreaming.mFlush; 786b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flush != mFlush) { 78720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // FIXME should return an accurate value, but over-estimate is better than under-estimate 788b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return mFrameCount; 789b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 7909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // the acquire might not be necessary since not doing a subsequent read 7919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 7929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - cblk->u.mStreaming.mFront; 7939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 7949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 79534fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 7969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 7979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 7989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // cache this value for later use by obtainBuffer(), with added barrier 8009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and racy if called by normal mixer thread 8019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // ignores flush(), so framesReady() may report a larger mFrameCount than obtainBuffer() 8029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return filled; 803a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 804a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 805bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackServerProxy::setStreamEndDone() { 806844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten audio_track_cblk_t* cblk = mCblk; 807bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent bool old = 808844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten (android_atomic_or(CBLK_STREAM_END_DONE, &cblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 809bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent if (!old) { 810e348c5b72ad889389c7c1c900c121f0fbee221b5Elliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 811ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 812bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent } 813bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent return old; 814bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 815bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 81682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kastenvoid AudioTrackServerProxy::tallyUnderrunFrames(uint32_t frameCount) 81782aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten{ 818844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten audio_track_cblk_t* cblk = mCblk; 8192812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk if (frameCount > 0) { 8202812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk cblk->u.mStreaming.mUnderrunFrames += frameCount; 8212812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk 8222812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk if (!mUnderrunning) { // start of underrun? 8232812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk mUnderrunCount++; 8242812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk cblk->u.mStreaming.mUnderrunCount = mUnderrunCount; 8252812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk mUnderrunning = true; 8262812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk ALOGV("tallyUnderrunFrames(%3u) at uf = %u, bump mUnderrunCount = %u", 8272812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk frameCount, cblk->u.mStreaming.mUnderrunFrames, mUnderrunCount); 8282812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } 82982aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 8302812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk // FIXME also wake futex so that underrun is noticed more quickly 8312812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk (void) android_atomic_or(CBLK_UNDERRUN, &cblk->mFlags); 8322812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } else { 8332812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk ALOGV_IF(mUnderrunning, 8342812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk "tallyUnderrunFrames(%3u) at uf = %u, underrun finished", 8352812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk frameCount, cblk->u.mStreaming.mUnderrunFrames); 8362812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk mUnderrunning = false; // so we can detect the next edge 8372812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } 83882aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten} 83982aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 8405a8a95de6dad1a3bcf3da5a37b35766e89086e13Ricardo GarciaAudioPlaybackRate AudioTrackServerProxy::getPlaybackRate() 8418edb8dc44b8a2f81bdb5db645b6b708548771a31Andy Hung{ // do not call from multiple threads without holding lock 8425a8a95de6dad1a3bcf3da5a37b35766e89086e13Ricardo Garcia mPlaybackRateObserver.poll(mPlaybackRate); 8435a8a95de6dad1a3bcf3da5a37b35766e89086e13Ricardo Garcia return mPlaybackRate; 8448edb8dc44b8a2f81bdb5db645b6b708548771a31Andy Hung} 8458edb8dc44b8a2f81bdb5db645b6b708548771a31Andy Hung 8469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 8479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 8489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackServerProxy::StaticAudioTrackServerProxy(audio_track_cblk_t* cblk, void *buffers, 8499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 8509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackServerProxy(cblk, buffers, frameCount, frameSize), 8514ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mObserver(&cblk->u.mStatic.mSingleStateQueue), 8524ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopMutator(&cblk->u.mStatic.mPosLoopQueue), 853cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadySafe(frameCount), mFramesReady(frameCount), 854cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadyIsCalledByMultipleThreads(false) 855a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8569b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung memset(&mState, 0, sizeof(mState)); 857a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 858a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::framesReadyIsCalledByMultipleThreads() 860a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFramesReadyIsCalledByMultipleThreads = true; 8629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 863a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackServerProxy::framesReady() 8659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 866cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung // Can't call pollPosition() from multiple threads. 8679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!mFramesReadyIsCalledByMultipleThreads) { 868cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung (void) pollPosition(); 869a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 870cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung return mFramesReadySafe; 871a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 872a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8739b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungstatus_t StaticAudioTrackServerProxy::updateStateWithLoop( 8749b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState *localState, const StaticAudioTrackState &update) const 875a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8769b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (localState->mLoopSequence != update.mLoopSequence) { 8779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool valid = false; 8789b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung const size_t loopStart = update.mLoopStart; 8799b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung const size_t loopEnd = update.mLoopEnd; 8809b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung size_t position = localState->mPosition; 8819b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (update.mLoopCount == 0) { 8829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 8839b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (update.mLoopCount >= -1) { 8849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (loopStart < loopEnd && loopEnd <= mFrameCount && 8859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten loopEnd - loopStart >= MIN_LOOP) { 886680b795435a5a501a56610258dce5eda40a1725dAndy Hung // If the current position is greater than the end of the loop 887680b795435a5a501a56610258dce5eda40a1725dAndy Hung // we "wrap" to the loop start. This might cause an audible pop. 888680b795435a5a501a56610258dce5eda40a1725dAndy Hung if (position >= loopEnd) { 8899b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung position = loopStart; 890cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung } 8919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 892a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 893a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 8949b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (!valid || position > mFrameCount) { 8959b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return NO_INIT; 8969b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 8979b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mPosition = position; 8989b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopCount = update.mLoopCount; 8999b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopEnd = loopEnd; 9009b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopStart = loopStart; 9019b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopSequence = update.mLoopSequence; 9029b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9039b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return OK; 9049b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 9059b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 9069b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungstatus_t StaticAudioTrackServerProxy::updateStateWithPosition( 9079b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState *localState, const StaticAudioTrackState &update) const 9089b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 9099b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (localState->mPositionSequence != update.mPositionSequence) { 9109b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (update.mPosition > mFrameCount) { 9119b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return NO_INIT; 9129b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (localState->mLoopCount != 0 && update.mPosition >= localState->mLoopEnd) { 9139b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopCount = 0; // disable loop count if position is beyond loop end. 9149b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9159b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mPosition = update.mPosition; 9169b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mPositionSequence = update.mPositionSequence; 9179b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9189b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return OK; 9199b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 9209b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 9219b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungssize_t StaticAudioTrackServerProxy::pollPosition() 9229b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 9239b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState state; 9249b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (mObserver.poll(state)) { 9259b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState trystate = mState; 9269b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung bool result; 927cb50c54b31a83ac598530780fa8c145a3cb4a2deChad Brubaker const int32_t diffSeq = (int32_t) state.mLoopSequence - (int32_t) state.mPositionSequence; 9289b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 9299b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (diffSeq < 0) { 9309b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung result = updateStateWithLoop(&trystate, state) == OK && 9319b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung updateStateWithPosition(&trystate, state) == OK; 9329b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else { 9339b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung result = updateStateWithPosition(&trystate, state) == OK && 9349b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung updateStateWithLoop(&trystate, state) == OK; 9359b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9369b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (!result) { 9374ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mObserver.done(); 9389b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // caution: no update occurs so server state will be inconsistent with client state. 9399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("%s client pushed an invalid state, shutting down", __func__); 9409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 9419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (ssize_t) NO_INIT; 9429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9439b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState = trystate; 9449b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (mState.mLoopCount == -1) { 9459b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mFramesReady = INT64_MAX; 9469b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (mState.mLoopCount == 0) { 9479b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mFramesReady = mFrameCount - mState.mPosition; 9489b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (mState.mLoopCount > 0) { 9499b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // TODO: Later consider fixing overflow, but does not seem needed now 9509b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // as will not overflow if loopStart and loopEnd are Java "ints". 9519b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mFramesReady = int64_t(mState.mLoopCount) * (mState.mLoopEnd - mState.mLoopStart) 9529b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung + mFrameCount - mState.mPosition; 9539b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 954cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadySafe = clampToSize(mFramesReady); 955fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This may overflow, but client is not supposed to rely on it 9564ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung StaticAudioTrackPosLoop posLoop; 9574ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung 9584ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mLoopCount = (int32_t) mState.mLoopCount; 9594ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mBufferPosition = (uint32_t) mState.mPosition; 9604ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopMutator.push(posLoop); 9614ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mObserver.done(); // safe to read mStatic variables. 962a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 9639b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return (ssize_t) mState.mPosition; 964a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 965a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 966954ca45ac30539a49f179580b667b0ab1056d113Andy Hungstatus_t StaticAudioTrackServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush) 967a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 9689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 9699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 9709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 9719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 9729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 9739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_INIT; 9749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t positionOrStatus = pollPosition(); 9769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (positionOrStatus < 0) { 9779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 9789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 9799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 9809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 9819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (status_t) positionOrStatus; 9829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = (size_t) positionOrStatus; 984cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung size_t end = mState.mLoopCount != 0 ? mState.mLoopEnd : mFrameCount; 9859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t avail; 986cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung if (position < end) { 987cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung avail = end - position; 9889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t wanted = buffer->mFrameCount; 9899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (avail < wanted) { 9909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = avail; 9919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 9929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = wanted; 9939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = &((char *) mBuffers)[position * mFrameSize]; 9959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 9969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = 0; 9979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 9989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 9999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1000cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung // As mFramesReady is the total remaining frames in the static audio track, 1001cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung // it is always larger or equal to avail. 1002486a7135593b4b40c067e9b06f393577abfef482Andy Hung LOG_ALWAYS_FATAL_IF(mFramesReady < (int64_t) avail); 1003cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung buffer->mNonContig = mFramesReady == INT64_MAX ? SIZE_MAX : clampToSize(mFramesReady - avail); 1004954ca45ac30539a49f179580b667b0ab1056d113Andy Hung if (!ackFlush) { 1005954ca45ac30539a49f179580b667b0ab1056d113Andy Hung mUnreleased = avail; 1006954ca45ac30539a49f179580b667b0ab1056d113Andy Hung } 10079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_ERROR; 10089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 1009a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 10109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::releaseBuffer(Buffer* buffer) 10119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 10129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 1013486a7135593b4b40c067e9b06f393577abfef482Andy Hung LOG_ALWAYS_FATAL_IF(!((int64_t) stepCount <= mFramesReady)); 10147db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased)); 10159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (stepCount == 0) { 10167db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 10179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 10189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 10199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 1020a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 10219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 10229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 10239b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung size_t position = mState.mPosition; 10249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t newPosition = position + stepCount; 10259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t setFlags = 0; 10269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(position <= newPosition && newPosition <= mFrameCount)) { 1027b187de1ada34a9023c05d020a4592686ba761278Glenn Kasten ALOGW("%s newPosition %zu outside [%zu, %zu]", __func__, newPosition, position, 1028b187de1ada34a9023c05d020a4592686ba761278Glenn Kasten mFrameCount); 10299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newPosition = mFrameCount; 10309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (mState.mLoopCount != 0 && newPosition == mState.mLoopEnd) { 1031cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung newPosition = mState.mLoopStart; 10329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mState.mLoopCount == -1 || --mState.mLoopCount != 0) { 10339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_CYCLE; 10349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 10359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_FINAL; 10369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1037a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 10389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (newPosition == mFrameCount) { 10399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags |= CBLK_BUFFER_END; 10409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 10419b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mPosition = newPosition; 1042cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung if (mFramesReady != INT64_MAX) { 1043cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReady -= stepCount; 1044cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung } 1045cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadySafe = clampToSize(mFramesReady); 10469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1047f20e1d8df84c5fbeeace0052d100982ae39bb7a4Glenn Kasten cblk->mServer += stepCount; 10483f0c902beb53a245c9db35e871607dba05b8d391Andy Hung mReleased += stepCount; 10493f0c902beb53a245c9db35e871607dba05b8d391Andy Hung 1050fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This may overflow, but client is not supposed to rely on it 10514ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung StaticAudioTrackPosLoop posLoop; 10524ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mBufferPosition = mState.mPosition; 10534ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mLoopCount = mState.mLoopCount; 10544ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopMutator.push(posLoop); 10559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (setFlags != 0) { 105696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten (void) android_atomic_or(setFlags, &cblk->mFlags); 10579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // this would be a good place to wake a futex 10589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 10599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 10609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 10619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 10629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 1063a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 1064a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 10652812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burkvoid StaticAudioTrackServerProxy::tallyUnderrunFrames(uint32_t frameCount) 106682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten{ 106782aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // Unlike AudioTrackServerProxy::tallyUnderrunFrames() used for streaming tracks, 106882aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // we don't have a location to count underrun frames. The underrun frame counter 106982aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // only exists in AudioTrackSharedStreaming. Fortunately, underruns are not 107082aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // possible for static buffer tracks other than at end of buffer, so this is not a loss. 107182aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 107282aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // FIXME also wake futex so that underrun is noticed more quickly 10732812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk if (frameCount > 0) { 10742812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk (void) android_atomic_or(CBLK_UNDERRUN, &mCblk->mFlags); 10752812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } 107682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten} 107782aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 10789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 10799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1080a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} // namespace android 1081