AudioTrackShared.cpp revision 4d231dc0ee34380956c71cbe18a750e487a69601
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() 4974935e44734c1ec235c2b6677db3e0dbefa5ddb8Glenn Kasten : mServer(0), mFutex(0), mMinimum(0), 50c56f3426099a3cf2d07ccff8886050c7fbce140fGlenn Kasten mVolumeLR(GAIN_MINIFLOAT_PACKED_UNITY), mSampleRate(0), mSendLevel(0), mFlags(0) 51a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten memset(&u, 0, sizeof(u)); 53a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 54a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenProxy::Proxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, size_t frameSize, 589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool isOut, bool clientInServer) 599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : mCblk(cblk), mBuffers(buffers), mFrameCount(frameCount), mFrameSize(frameSize), 609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFrameCountP2(roundup(frameCount)), mIsOut(isOut), mClientInServer(clientInServer), 617db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mIsShutdown(false), mUnreleased(0) 62a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 64a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenClientProxy::ClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 69c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer) 70c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk , mBufferSizeInFrames(frameCount) 71c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk , mEpoch(0) 726ae5843c281301a9ffd1059d185620a9337e15a2Andy Hung , mTimestampObserver(&cblk->mExtendedTimestampQueue) 739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenconst struct timespec ClientProxy::kForever = {INT_MAX /*tv_sec*/, 0 /*tv_nsec*/}; 779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenconst struct timespec ClientProxy::kNonBlocking = {0 /*tv_sec*/, 0 /*tv_nsec*/}; 789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#define MEASURE_NS 10000000 // attempt to provide accurate timeouts if requested >= MEASURE_NS 809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// To facilitate quicker recovery from server failure, this value limits the timeout per each futex 829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// wait. However it does not protect infinite timeouts. If defined to be zero, there is no limit. 839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// FIXME May not be compatible with audio tunneling requirements where timeout should be in the 849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// order of minutes. 859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#define MAX_SEC 5 869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenstatus_t ClientProxy::obtainBuffer(Buffer* buffer, const struct timespec *requested, 889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec *elapsed) 899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 907db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec total; // total elapsed time spent waiting 929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec = 0; 939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec = 0; 949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool measure = elapsed != NULL; // whether to measure total elapsed time spent waiting 95a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t status; 979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum { 989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_ZERO, // requested == NULL || *requested == 0 999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_INFINITE, // *requested == infinity 1009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_FINITE, // 0 < *requested < infinity 1019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 1029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } timeout; 1039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 1049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_ZERO; 1059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 1069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_ZERO; 1079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (requested->tv_sec == INT_MAX) { 1089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_INFINITE; 1099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_FINITE; 1119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested->tv_sec > 0 || requested->tv_nsec >= MEASURE_NS) { 1129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten measure = true; 1139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec before; 1169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool beforeIsValid = false; 1179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 1189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool ignoreInitialPendingInterrupt = true; 1199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for shared memory corruption 1209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 1219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_INIT; 1229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten for (;;) { 12596f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~CBLK_INTERRUPT, &cblk->mFlags); 1269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for track invalidation by server, or server death detection 1279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flags & CBLK_INVALID) { 1289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("Track invalidated"); 1299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = DEAD_OBJECT; 1309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1324d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent if (flags & CBLK_DISABLED) { 1334d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent ALOGV("Track disabled"); 1344d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent status = NOT_ENOUGH_DATA; 1354d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent goto end; 1364d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent } 1379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for obtainBuffer interrupted by client 1389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!ignoreInitialPendingInterrupt && (flags & CBLK_INTERRUPT)) { 1399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("obtainBuffer() interrupted by client"); 1409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = -EINTR; 1419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ignoreInitialPendingInterrupt = false; 1449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord) 1459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 1469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 1479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 1489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The barrier following the read of mFront is probably redundant. 1499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // We're about to perform a conditional branch based on 'filled', 1509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // which will force the processor to observe the read of mFront 1519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // prior to allowing data writes starting at mRaw. 1529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // However, the processor may support speculative execution, 1539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and be unable to undo speculative writes into shared memory. 1549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The barrier will prevent such speculative execution. 1559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 1569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 1579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // On the other hand, this barrier is required. 1599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 1609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = cblk->u.mStreaming.mFront; 1619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 162c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // write to rear, read from front 1639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 1649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not be overfull 1659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 1666dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten if (mIsOut) { 16734fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd, mFrameCount=%zu); " 1686dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten "shutting down", filled, mFrameCount); 1696dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten mIsShutdown = true; 1706dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten status = NO_INIT; 1716dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten goto end; 1726dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten } 1736dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten // for input, sync up on overrun 1746dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten filled = 0; 1756dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten cblk->u.mStreaming.mFront = rear; 1766dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten (void) android_atomic_or(CBLK_OVERRUN, &cblk->mFlags); 1779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 178c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // Don't allow filling pipe beyond the user settable size. 179c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // The calculation for avail can go negative if the buffer size 180c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // is suddenly dropped below the amount already in the buffer. 181c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // So use a signed calculation to prevent a numeric overflow abort. 182c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk ssize_t adjustableSize = (ssize_t) mBufferSizeInFrames; 183c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk ssize_t avail = (mIsOut) ? adjustableSize - filled : filled; 184c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk if (avail < 0) { 185c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk avail = 0; 186c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk } else if (avail > 0) { 1879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'avail' may be non-contiguous, so return only the first contiguous chunk 188bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent size_t part1; 1899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 1909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 1919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 1929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 1949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 1959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 196bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent if (part1 > (size_t)avail) { 1979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = avail; 1989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 199bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent if (part1 > buffer->mFrameCount) { 2009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = buffer->mFrameCount; 2019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 202bdd8101cd487cdfe36726aa0d78c24008c35d605Eric Laurent buffer->mFrameCount = part1; 2039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 2049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? rear : front) * mFrameSize] : NULL; 2059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = avail - part1; 2067db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = part1; 2079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_ERROR; 2089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec remaining; 2119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten const struct timespec *ts; 2129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten switch (timeout) { 2139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_ZERO: 2149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = WOULD_BLOCK; 2159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_INFINITE: 2179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 2189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_FINITE: 2209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_CONTINUE; 2219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (MAX_SEC == 0) { 2229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = requested; 2239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // fall through 2269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_CONTINUE: 2279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 2289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!measure || requested->tv_sec < total.tv_sec || 2299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 2309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = TIMED_OUT; 2319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = requested->tv_sec - total.tv_sec; 2349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 2359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec += 1000000000; 2369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec++; 2379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 2399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = MAX_SEC; 2409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec = 0; 2419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = &remaining; 2439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 245adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("obtainBuffer() timeout=%d", timeout); 2469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 2479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2490d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 2500d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 2519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure && !beforeIsValid) { 2529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &before); 2539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 255ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes errno = 0; 256ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 2570d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 258b463da8e499149c7230b8dbd839bb7bc8ece602fLeena Winterrowd status_t error = errno; // clock_gettime can affect errno 2599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // update total elapsed time spent waiting 2609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 2619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec after; 2629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &after); 2639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec += after.tv_sec - before.tv_sec; 2649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten long deltaNs = after.tv_nsec - before.tv_nsec; 2659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (deltaNs < 0) { 2669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten deltaNs += 1000000000; 2679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec--; 2689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((total.tv_nsec += deltaNs) >= 1000000000) { 2709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec -= 1000000000; 2719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec++; 2729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten before = after; 2749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 276b463da8e499149c7230b8dbd839bb7bc8ece602fLeena Winterrowd switch (error) { 277ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case 0: // normal wakeup by server, or by binderDied() 278ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EWOULDBLOCK: // benign race condition with server 279ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EINTR: // wait was interrupted by signal or other spurious wakeup 280ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case ETIMEDOUT: // time-out expired 2817db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // FIXME these error/non-0 status are being dropped 2829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 284b463da8e499149c7230b8dbd839bb7bc8ece602fLeena Winterrowd status = error; 285ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes ALOGE("%s unexpected error %s", __func__, strerror(status)); 2869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 288a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 289a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 290a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 2919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenend: 2929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (status != NO_ERROR) { 2939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 2949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 2959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 2967db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 2979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (elapsed != NULL) { 2999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten *elapsed = total; 300a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 3019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 3029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten requested = &kNonBlocking; 3039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 305b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("requested %ld.%03ld elapsed %ld.%03ld", 306b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested->tv_sec, requested->tv_nsec / 1000000, 307b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec, total.tv_nsec / 1000000); 3089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return status; 3109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 311a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::releaseBuffer(Buffer* buffer) 3139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3147db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 3159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 3167db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 3177db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 3187db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 3197db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 3207db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 3219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 3229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3237db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 3247db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased -= stepCount; 3259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 3269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Both of these barriers are required 3279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 3289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 3299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 3309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 3319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 3329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 3339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 334a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 335a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::binderDied() 337a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 3389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 33996f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INVALID, &cblk->mFlags) & CBLK_INVALID)) { 34082a69ea8b090d57bff5e02774688b546a711bbb8zunkyu.lee android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 3419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // it seems that a FUTEX_WAKE_PRIVATE will not wake a FUTEX_WAIT, even within same process 342ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 343ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 3449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 346a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::interrupt() 3489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 35096f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INTERRUPT, &cblk->mFlags) & CBLK_INTERRUPT)) { 35182a69ea8b090d57bff5e02774688b546a711bbb8zunkyu.lee android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 352ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 353ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 354a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 3559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 356a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 35765dda4f09425ad027e27a51a3108472448d3ab8bChad Brubaker__attribute__((no_sanitize("integer"))) 3589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t ClientProxy::getMisalignment() 3599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 3619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (mFrameCountP2 - (mIsOut ? cblk->u.mStreaming.mRear : cblk->u.mStreaming.mFront)) & 3629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (mFrameCountP2 - 1); 3639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 364a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 365c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burksize_t ClientProxy::setBufferSizeInFrames(size_t size) 366c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk{ 367c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk // TODO set minimum to 2X the fast mixer buffer size. 368c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk size_t minimum = 128 * 2; // arbitrary 369c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk size_t maximum = frameCount(); 370c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk if (size < minimum) { 371c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk size = minimum; 372c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk } else if (size > maximum) { 373c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk size = maximum; 374c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk } 375c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk mBufferSizeInFrames = size; 376c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk return size; 377c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk} 378c0adecb800b197cb8c028513130ebabf2d0f37baPhil Burk 3799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 3809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 3819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid AudioTrackClientProxy::flush() 3829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 38320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // This works for mFrameCountP2 <= 2^30 38420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t increment = mFrameCountP2 << 1; 38520f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t mask = increment - 1; 38620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten audio_track_cblk_t* cblk = mCblk; 387a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // mFlush is 32 bits concatenated as [ flush_counter ] [ newfront_offset ] 388a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // Should newFlush = cblk->u.mStreaming.mRear? Only problem is 389a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // if you want to flush twice to the same rear location after a 32 bit wrap. 39020f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten int32_t newFlush = (cblk->u.mStreaming.mRear & mask) | 39120f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ((cblk->u.mStreaming.mFlush & ~mask) + increment); 39220f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten android_atomic_release_store(newFlush, &cblk->u.mStreaming.mFlush); 3939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 3949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 395bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::clearStreamEndDone() { 39696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (android_atomic_and(~CBLK_STREAM_END_DONE, &mCblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 397bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 398bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 399bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::getStreamEndDone() const { 40096f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (mCblk->mFlags & CBLK_STREAM_END_DONE) != 0; 401bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 402bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 403b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldstatus_t AudioTrackClientProxy::waitStreamEndDone(const struct timespec *requested) 404b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald{ 405b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec total; // total elapsed time spent waiting 406b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec = 0; 407b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_nsec = 0; 408b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald audio_track_cblk_t* cblk = mCblk; 409b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status_t status; 410b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald enum { 411b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_ZERO, // requested == NULL || *requested == 0 412b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_INFINITE, // *requested == infinity 413b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_FINITE, // 0 < *requested < infinity 414b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 415b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } timeout; 416b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 417b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 418b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 419b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 420b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == INT_MAX) { 421b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_INFINITE; 422b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else { 423b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_FINITE; 424b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 425b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald for (;;) { 42696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~(CBLK_INTERRUPT|CBLK_STREAM_END_DONE), &cblk->mFlags); 427b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for track invalidation by server, or server death detection 428b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INVALID) { 429b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("Track invalidated"); 430b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = DEAD_OBJECT; 431b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 432b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 4334d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent // a track is not supposed to underrun at this stage but consider it done 4344d231dc0ee34380956c71cbe18a750e487a69601Eric Laurent if (flags & (CBLK_STREAM_END_DONE | CBLK_DISABLED)) { 435b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("stream end received"); 436b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = NO_ERROR; 437b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 438b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 439b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for obtainBuffer interrupted by client 440b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INTERRUPT) { 441b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("waitStreamEndDone() interrupted by client"); 442b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = -EINTR; 443b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 444b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 445b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec remaining; 446b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald const struct timespec *ts; 447b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald switch (timeout) { 448b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_ZERO: 449b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = WOULD_BLOCK; 450b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 451b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_INFINITE: 452b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 453b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 454b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_FINITE: 455b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_CONTINUE; 456b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (MAX_SEC == 0) { 457b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = requested; 458b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 459b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 460b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // fall through 461b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_CONTINUE: 462b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 463b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested->tv_sec < total.tv_sec || 464b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 465b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = TIMED_OUT; 466b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 467b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 468b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = requested->tv_sec - total.tv_sec; 469b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 470b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec += 1000000000; 471b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec++; 472b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 473b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 474b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = MAX_SEC; 475b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec = 0; 476b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 477b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = &remaining; 478b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 479b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 480adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("waitStreamEndDone() timeout=%d", timeout); 481b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 482b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 483b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 484b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 485b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 486ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes errno = 0; 487ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 488b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 489ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes switch (errno) { 490ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case 0: // normal wakeup by server, or by binderDied() 491ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EWOULDBLOCK: // benign race condition with server 492ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EINTR: // wait was interrupted by signal or other spurious wakeup 493ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case ETIMEDOUT: // time-out expired 494b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 495b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 496ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes status = errno; 497ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes ALOGE("%s unexpected error %s", __func__, strerror(status)); 498b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 499b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 500b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 501b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 502b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 503b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldend: 504b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 505b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested = &kNonBlocking; 506b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 507b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return status; 508b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald} 509b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 5109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 5119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackClientProxy::StaticAudioTrackClientProxy(audio_track_cblk_t* cblk, void *buffers, 5139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 5149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackClientProxy(cblk, buffers, frameCount, frameSize), 5154ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mMutator(&cblk->u.mStatic.mSingleStateQueue), 5164ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopObserver(&cblk->u.mStatic.mPosLoopQueue) 5179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5189b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung memset(&mState, 0, sizeof(mState)); 5194ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung memset(&mPosLoop, 0, sizeof(mPosLoop)); 5209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::flush() 5239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 524adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("static flush"); 5259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::setLoop(size_t loopStart, size_t loopEnd, int loopCount) 5289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 529fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This can only happen on a 64-bit client 530fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten if (loopStart > UINT32_MAX || loopEnd > UINT32_MAX) { 531fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // FIXME Should return an error status 532fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten return; 533fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten } 5349b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopStart = (uint32_t) loopStart; 5359b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopEnd = (uint32_t) loopEnd; 5369b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopCount = loopCount; 5379b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mLoopSequence = incrementSequence(mState.mLoopSequence, mState.mPositionSequence); 5389b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // set patch-up variables until the mState is acknowledged by the ServerProxy. 5399b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // observed buffer position and loop count will freeze until then to give the 5409b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // illusion of a synchronous change. 5414ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung getBufferPositionAndLoopCount(NULL, NULL); 5429b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // preserve behavior to restart at mState.mLoopStart if position exceeds mState.mLoopEnd. 5434ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mState.mLoopCount != 0 && mPosLoop.mBufferPosition >= mState.mLoopEnd) { 5444ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mBufferPosition = mState.mLoopStart; 5459b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 5464ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mLoopCount = mState.mLoopCount; 5479b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung (void) mMutator.push(mState); 5489b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 5499b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 5509b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungvoid StaticAudioTrackClientProxy::setBufferPosition(size_t position) 5519b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 5529b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // This can only happen on a 64-bit client 5539b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (position > UINT32_MAX) { 5549b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // FIXME Should return an error status 5559b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return; 556680b795435a5a501a56610258dce5eda40a1725dAndy Hung } 5579b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mPosition = (uint32_t) position; 5589b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mPositionSequence = incrementSequence(mState.mPositionSequence, mState.mLoopSequence); 5594ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // set patch-up variables until the mState is acknowledged by the ServerProxy. 5604ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // observed buffer position and loop count will freeze until then to give the 5614ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // illusion of a synchronous change. 5624ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mState.mLoopCount > 0) { // only check if loop count is changing 5634ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung getBufferPositionAndLoopCount(NULL, NULL); // get last position 5644ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5654ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mBufferPosition = position; 5664ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (position >= mState.mLoopEnd) { 5674ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung // no ongoing loop is possible if position is greater than loopEnd. 5684ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoop.mLoopCount = 0; 5694ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5709b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung (void) mMutator.push(mState); 5719b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 5729b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 5739b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungvoid StaticAudioTrackClientProxy::setBufferPositionAndLoop(size_t position, size_t loopStart, 5749b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung size_t loopEnd, int loopCount) 5759b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 5769b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung setLoop(loopStart, loopEnd, loopCount); 5779b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung setBufferPosition(position); 5789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackClientProxy::getBufferPosition() 5819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5824ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung getBufferPositionAndLoopCount(NULL, NULL); 5834ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung return mPosLoop.mBufferPosition; 5844ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung} 5854ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung 5864ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hungvoid StaticAudioTrackClientProxy::getBufferPositionAndLoopCount( 5874ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung size_t *position, int *loopCount) 5884ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung{ 5894ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mMutator.ack() == StaticAudioTrackSingleStateQueue::SSQ_DONE) { 5904ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (mPosLoopObserver.poll(mPosLoop)) { 5914ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung ; // a valid mPosLoop should be available if ackDone is true. 5924ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5934ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5944ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (position != NULL) { 5954ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung *position = mPosLoop.mBufferPosition; 5964ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung } 5974ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung if (loopCount != NULL) { 5984ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung *loopCount = mPosLoop.mLoopCount; 599a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 6019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 603a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenServerProxy::ServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 6059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 6067db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer), 6073f0c902beb53a245c9db35e871607dba05b8d391Andy Hung mAvailToClient(0), mFlush(0), mReleased(0) 6086ae5843c281301a9ffd1059d185620a9337e15a2Andy Hung , mTimestampMutator(&cblk->mExtendedTimestampQueue) 6099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 6109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 6119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6122e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kastenstatus_t ServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush) 6139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 6147db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 6159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 6167db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 6179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6187db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten { 6199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 6209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord), 6219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // or use previous cached value from framesReady(), with added barrier if it omits. 6229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 6239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 6249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // See notes on barriers at ClientProxy::obtainBuffer() 6259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t flush = cblk->u.mStreaming.mFlush; 6279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 628b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald front = cblk->u.mStreaming.mFront; 6299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flush != mFlush) { 630050501d11d944dcb256d37d3b86bd658d94f6a7fGlenn Kasten // effectively obtain then release whatever is in the buffer 631a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung const size_t overflowBit = mFrameCountP2 << 1; 632a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung const size_t mask = overflowBit - 1; 63320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten int32_t newFront = (front & ~mask) | (flush & mask); 63420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ssize_t filled = rear - newFront; 635a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung if (filled >= (ssize_t)overflowBit) { 636a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // front and rear offsets span the overflow bit of the p2 mask 637a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // so rebasing newFront on the front offset is off by the overflow bit. 638a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung // adjust newFront to match rear offset. 639dbd0f3c5e15e56c2d91ae1405fecf2279785ef00Glenn Kasten ALOGV("flush wrap: filled %zx >= overflowBit %zx", filled, overflowBit); 640a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung newFront += overflowBit; 641a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung filled -= overflowBit; 642a2d75cdb1e389f2b4ce5992fb6652399b4d30966Andy Hung } 64320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // Rather than shutting down on a corrupt flush, just treat it as a full flush 64420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 645b187de1ada34a9023c05d020a4592686ba761278Glenn Kasten ALOGE("mFlush %#x -> %#x, front %#x, rear %#x, mask %#x, newFront %#x, " 646f1063e2659cad01ec334a265c31734c63c319cc4Lajos Molnar "filled %zd=%#x", 647f1063e2659cad01ec334a265c31734c63c319cc4Lajos Molnar mFlush, flush, front, rear, 648f1063e2659cad01ec334a265c31734c63c319cc4Lajos Molnar (unsigned)mask, newFront, filled, (unsigned)filled); 64920f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten newFront = rear; 65020f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten } 65120f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten mFlush = flush; 65220f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten android_atomic_release_store(newFront, &cblk->u.mStreaming.mFront); 65320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // There is no danger from a false positive, so err on the side of caution 65420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten if (true /*front != newFront*/) { 655b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 656b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 657ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 658ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 659b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 660b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 66120f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten front = newFront; 662a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 6659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 6669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 6689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 6699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 67034fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 6719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 6729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 6747db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 675a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // don't allow filling pipe beyond the nominal size 6779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t availToServer; 6789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = filled; 6809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = mFrameCount - filled; 6819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = mFrameCount - filled; 6839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = filled; 6849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'availToServer' may be non-contiguous, so return only the first contiguous chunk 6869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t part1; 6879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 6899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 6909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 6929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 6939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > availToServer) { 6959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = availToServer; 6969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t ask = buffer->mFrameCount; 6989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > ask) { 6999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = ask; 7009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // is assignment redundant in some cases? 7029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = part1; 7039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 7049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? front : rear) * mFrameSize] : NULL; 7059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = availToServer - part1; 7062e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten // After flush(), allow releaseBuffer() on a previously obtained buffer; 7072e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten // see "Acknowledge any pending flush()" in audioflinger/Tracks.cpp. 7082e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten if (!ackFlush) { 7092e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten mUnreleased = part1; 7102e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten } 7119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return part1 > 0 ? NO_ERROR : WOULD_BLOCK; 7127db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten } 7137db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kastenno_init: 7147db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 7157db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 7167db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 7177db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 7187db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten return NO_INIT; 7199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 720a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ServerProxy::releaseBuffer(Buffer* buffer) 7229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 7237db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 7249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 7257db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 7267db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 7277db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 7289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 7309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 7319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7327db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 7339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 7349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 7359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 7369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 7379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 7389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 7409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 741a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 742a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 743844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten cblk->mServer += stepCount; 7443f0c902beb53a245c9db35e871607dba05b8d391Andy Hung mReleased += stepCount; 745a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t half = mFrameCount / 2; 7479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (half == 0) { 7489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten half = 1; 7499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 750fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten size_t minimum = (size_t) cblk->mMinimum; 7519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (minimum == 0) { 7529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = mIsOut ? half : 1; 7539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (minimum > half) { 7549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = half; 7559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 75693bb77da5481ab75c2cd6e3aa681839273c6e43dGlenn Kasten // FIXME AudioRecord wakeup needs to be optimized; it currently wakes up client every time 757ce8828a016b082f730152af2204b8ea3610dc1ecGlenn Kasten if (!mIsOut || (mAvailToClient + stepCount >= minimum)) { 75834fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGV("mAvailToClient=%zu stepCount=%zu minimum=%zu", mAvailToClient, stepCount, minimum); 7590d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 7600d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 761ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 762ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 7639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 764a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 7679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 769a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 770a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 7729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t AudioTrackServerProxy::framesReady() 774a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten LOG_ALWAYS_FATAL_IF(!mIsOut); 7769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 7789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 7799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 781b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 782b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t flush = cblk->u.mStreaming.mFlush; 783b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flush != mFlush) { 78420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // FIXME should return an accurate value, but over-estimate is better than under-estimate 785b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return mFrameCount; 786b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 7879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // the acquire might not be necessary since not doing a subsequent read 7889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 7899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - cblk->u.mStreaming.mFront; 7909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 7919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 79234fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 7939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 7949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 7959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // cache this value for later use by obtainBuffer(), with added barrier 7979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and racy if called by normal mixer thread 7989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // ignores flush(), so framesReady() may report a larger mFrameCount than obtainBuffer() 7999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return filled; 800a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 801a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 802bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackServerProxy::setStreamEndDone() { 803844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten audio_track_cblk_t* cblk = mCblk; 804bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent bool old = 805844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten (android_atomic_or(CBLK_STREAM_END_DONE, &cblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 806bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent if (!old) { 807e348c5b72ad889389c7c1c900c121f0fbee221b5Elliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 808ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 809bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent } 810bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent return old; 811bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 812bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 81382aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kastenvoid AudioTrackServerProxy::tallyUnderrunFrames(uint32_t frameCount) 81482aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten{ 815844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten audio_track_cblk_t* cblk = mCblk; 8162812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk if (frameCount > 0) { 8172812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk cblk->u.mStreaming.mUnderrunFrames += frameCount; 8182812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk 8192812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk if (!mUnderrunning) { // start of underrun? 8202812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk mUnderrunCount++; 8212812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk cblk->u.mStreaming.mUnderrunCount = mUnderrunCount; 8222812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk mUnderrunning = true; 8232812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk ALOGV("tallyUnderrunFrames(%3u) at uf = %u, bump mUnderrunCount = %u", 8242812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk frameCount, cblk->u.mStreaming.mUnderrunFrames, mUnderrunCount); 8252812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } 82682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 8272812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk // FIXME also wake futex so that underrun is noticed more quickly 8282812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk (void) android_atomic_or(CBLK_UNDERRUN, &cblk->mFlags); 8292812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } else { 8302812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk ALOGV_IF(mUnderrunning, 8312812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk "tallyUnderrunFrames(%3u) at uf = %u, underrun finished", 8322812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk frameCount, cblk->u.mStreaming.mUnderrunFrames); 8332812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk mUnderrunning = false; // so we can detect the next edge 8342812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } 83582aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten} 83682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 8375a8a95de6dad1a3bcf3da5a37b35766e89086e13Ricardo GarciaAudioPlaybackRate AudioTrackServerProxy::getPlaybackRate() 8388edb8dc44b8a2f81bdb5db645b6b708548771a31Andy Hung{ // do not call from multiple threads without holding lock 8395a8a95de6dad1a3bcf3da5a37b35766e89086e13Ricardo Garcia mPlaybackRateObserver.poll(mPlaybackRate); 8405a8a95de6dad1a3bcf3da5a37b35766e89086e13Ricardo Garcia return mPlaybackRate; 8418edb8dc44b8a2f81bdb5db645b6b708548771a31Andy Hung} 8428edb8dc44b8a2f81bdb5db645b6b708548771a31Andy Hung 8439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 8449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 8459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackServerProxy::StaticAudioTrackServerProxy(audio_track_cblk_t* cblk, void *buffers, 8469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 8479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackServerProxy(cblk, buffers, frameCount, frameSize), 8484ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mObserver(&cblk->u.mStatic.mSingleStateQueue), 8494ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopMutator(&cblk->u.mStatic.mPosLoopQueue), 850cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadySafe(frameCount), mFramesReady(frameCount), 851cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadyIsCalledByMultipleThreads(false) 852a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8539b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung memset(&mState, 0, sizeof(mState)); 854a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 855a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::framesReadyIsCalledByMultipleThreads() 857a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFramesReadyIsCalledByMultipleThreads = true; 8599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 860a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackServerProxy::framesReady() 8629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 863cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung // Can't call pollPosition() from multiple threads. 8649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!mFramesReadyIsCalledByMultipleThreads) { 865cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung (void) pollPosition(); 866a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 867cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung return mFramesReadySafe; 868a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 869a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8709b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungstatus_t StaticAudioTrackServerProxy::updateStateWithLoop( 8719b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState *localState, const StaticAudioTrackState &update) const 872a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8739b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (localState->mLoopSequence != update.mLoopSequence) { 8749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool valid = false; 8759b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung const size_t loopStart = update.mLoopStart; 8769b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung const size_t loopEnd = update.mLoopEnd; 8779b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung size_t position = localState->mPosition; 8789b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (update.mLoopCount == 0) { 8799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 8809b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (update.mLoopCount >= -1) { 8819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (loopStart < loopEnd && loopEnd <= mFrameCount && 8829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten loopEnd - loopStart >= MIN_LOOP) { 883680b795435a5a501a56610258dce5eda40a1725dAndy Hung // If the current position is greater than the end of the loop 884680b795435a5a501a56610258dce5eda40a1725dAndy Hung // we "wrap" to the loop start. This might cause an audible pop. 885680b795435a5a501a56610258dce5eda40a1725dAndy Hung if (position >= loopEnd) { 8869b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung position = loopStart; 887cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung } 8889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 889a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 890a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 8919b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (!valid || position > mFrameCount) { 8929b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return NO_INIT; 8939b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 8949b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mPosition = position; 8959b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopCount = update.mLoopCount; 8969b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopEnd = loopEnd; 8979b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopStart = loopStart; 8989b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopSequence = update.mLoopSequence; 8999b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9009b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return OK; 9019b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 9029b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 9039b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungstatus_t StaticAudioTrackServerProxy::updateStateWithPosition( 9049b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState *localState, const StaticAudioTrackState &update) const 9059b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 9069b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (localState->mPositionSequence != update.mPositionSequence) { 9079b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (update.mPosition > mFrameCount) { 9089b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return NO_INIT; 9099b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (localState->mLoopCount != 0 && update.mPosition >= localState->mLoopEnd) { 9109b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mLoopCount = 0; // disable loop count if position is beyond loop end. 9119b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9129b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mPosition = update.mPosition; 9139b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung localState->mPositionSequence = update.mPositionSequence; 9149b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9159b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return OK; 9169b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung} 9179b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 9189b4615887c23548438fd0d8e3d8f04ac21912850Andy Hungssize_t StaticAudioTrackServerProxy::pollPosition() 9199b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung{ 9209b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState state; 9219b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (mObserver.poll(state)) { 9229b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung StaticAudioTrackState trystate = mState; 9239b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung bool result; 924cb50c54b31a83ac598530780fa8c145a3cb4a2deChad Brubaker const int32_t diffSeq = (int32_t) state.mLoopSequence - (int32_t) state.mPositionSequence; 9259b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung 9269b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (diffSeq < 0) { 9279b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung result = updateStateWithLoop(&trystate, state) == OK && 9289b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung updateStateWithPosition(&trystate, state) == OK; 9299b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else { 9309b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung result = updateStateWithPosition(&trystate, state) == OK && 9319b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung updateStateWithLoop(&trystate, state) == OK; 9329b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 9339b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (!result) { 9344ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mObserver.done(); 9359b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // caution: no update occurs so server state will be inconsistent with client state. 9369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("%s client pushed an invalid state, shutting down", __func__); 9379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 9389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (ssize_t) NO_INIT; 9399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9409b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState = trystate; 9419b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung if (mState.mLoopCount == -1) { 9429b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mFramesReady = INT64_MAX; 9439b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (mState.mLoopCount == 0) { 9449b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mFramesReady = mFrameCount - mState.mPosition; 9459b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } else if (mState.mLoopCount > 0) { 9469b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // TODO: Later consider fixing overflow, but does not seem needed now 9479b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung // as will not overflow if loopStart and loopEnd are Java "ints". 9489b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mFramesReady = int64_t(mState.mLoopCount) * (mState.mLoopEnd - mState.mLoopStart) 9499b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung + mFrameCount - mState.mPosition; 9509b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung } 951cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadySafe = clampToSize(mFramesReady); 952fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This may overflow, but client is not supposed to rely on it 9534ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung StaticAudioTrackPosLoop posLoop; 9544ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung 9554ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mLoopCount = (int32_t) mState.mLoopCount; 9564ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mBufferPosition = (uint32_t) mState.mPosition; 9574ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopMutator.push(posLoop); 9584ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mObserver.done(); // safe to read mStatic variables. 959a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 9609b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung return (ssize_t) mState.mPosition; 961a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 962a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 963954ca45ac30539a49f179580b667b0ab1056d113Andy Hungstatus_t StaticAudioTrackServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush) 964a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 9659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 9669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 9679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 9689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 9699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 9709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_INIT; 9719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t positionOrStatus = pollPosition(); 9739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (positionOrStatus < 0) { 9749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 9759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 9769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 9779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 9789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (status_t) positionOrStatus; 9799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = (size_t) positionOrStatus; 981cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung size_t end = mState.mLoopCount != 0 ? mState.mLoopEnd : mFrameCount; 9829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t avail; 983cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung if (position < end) { 984cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung avail = end - position; 9859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t wanted = buffer->mFrameCount; 9869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (avail < wanted) { 9879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = avail; 9889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 9899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = wanted; 9909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 9919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = &((char *) mBuffers)[position * mFrameSize]; 9929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 9939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = 0; 9949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 9959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 9969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 997cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung // As mFramesReady is the total remaining frames in the static audio track, 998cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung // it is always larger or equal to avail. 999486a7135593b4b40c067e9b06f393577abfef482Andy Hung LOG_ALWAYS_FATAL_IF(mFramesReady < (int64_t) avail); 1000cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung buffer->mNonContig = mFramesReady == INT64_MAX ? SIZE_MAX : clampToSize(mFramesReady - avail); 1001954ca45ac30539a49f179580b667b0ab1056d113Andy Hung if (!ackFlush) { 1002954ca45ac30539a49f179580b667b0ab1056d113Andy Hung mUnreleased = avail; 1003954ca45ac30539a49f179580b667b0ab1056d113Andy Hung } 10049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_ERROR; 10059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 1006a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 10079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::releaseBuffer(Buffer* buffer) 10089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 10099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 1010486a7135593b4b40c067e9b06f393577abfef482Andy Hung LOG_ALWAYS_FATAL_IF(!((int64_t) stepCount <= mFramesReady)); 10117db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased)); 10129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (stepCount == 0) { 10137db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 10149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 10159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 10169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 1017a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 10189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 10199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 10209b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung size_t position = mState.mPosition; 10219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t newPosition = position + stepCount; 10229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t setFlags = 0; 10239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(position <= newPosition && newPosition <= mFrameCount)) { 1024b187de1ada34a9023c05d020a4592686ba761278Glenn Kasten ALOGW("%s newPosition %zu outside [%zu, %zu]", __func__, newPosition, position, 1025b187de1ada34a9023c05d020a4592686ba761278Glenn Kasten mFrameCount); 10269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newPosition = mFrameCount; 10279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (mState.mLoopCount != 0 && newPosition == mState.mLoopEnd) { 1028cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung newPosition = mState.mLoopStart; 10299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mState.mLoopCount == -1 || --mState.mLoopCount != 0) { 10309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_CYCLE; 10319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 10329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_FINAL; 10339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1034a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 10359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (newPosition == mFrameCount) { 10369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags |= CBLK_BUFFER_END; 10379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 10389b4615887c23548438fd0d8e3d8f04ac21912850Andy Hung mState.mPosition = newPosition; 1039cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung if (mFramesReady != INT64_MAX) { 1040cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReady -= stepCount; 1041cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung } 1042cb2129b3b568a4e31bcbda3545a468024bc972feAndy Hung mFramesReadySafe = clampToSize(mFramesReady); 10439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1044f20e1d8df84c5fbeeace0052d100982ae39bb7a4Glenn Kasten cblk->mServer += stepCount; 10453f0c902beb53a245c9db35e871607dba05b8d391Andy Hung mReleased += stepCount; 10463f0c902beb53a245c9db35e871607dba05b8d391Andy Hung 1047fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This may overflow, but client is not supposed to rely on it 10484ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung StaticAudioTrackPosLoop posLoop; 10494ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mBufferPosition = mState.mPosition; 10504ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung posLoop.mLoopCount = mState.mLoopCount; 10514ede21d9c1f957baf5e561849ff9bbe4bcbefc20Andy Hung mPosLoopMutator.push(posLoop); 10529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (setFlags != 0) { 105396f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten (void) android_atomic_or(setFlags, &cblk->mFlags); 10549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // this would be a good place to wake a futex 10559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 10569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 10579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 10589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 10599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 1060a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 1061a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 10622812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burkvoid StaticAudioTrackServerProxy::tallyUnderrunFrames(uint32_t frameCount) 106382aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten{ 106482aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // Unlike AudioTrackServerProxy::tallyUnderrunFrames() used for streaming tracks, 106582aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // we don't have a location to count underrun frames. The underrun frame counter 106682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // only exists in AudioTrackSharedStreaming. Fortunately, underruns are not 106782aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // possible for static buffer tracks other than at end of buffer, so this is not a loss. 106882aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 106982aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // FIXME also wake futex so that underrun is noticed more quickly 10702812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk if (frameCount > 0) { 10712812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk (void) android_atomic_or(CBLK_UNDERRUN, &mCblk->mFlags); 10722812d9ea3a3a33142dd8e23c9d949c498d6f7a12Phil Burk } 107382aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten} 107482aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 10759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 10769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1077a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} // namespace android 1078