AudioTrackShared.cpp revision 96f60d8f04432a1ed503b3e24d5736d28c63c9a2
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> 229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenextern "C" { 239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#include "../private/bionic_futex.h" 249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 25a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 26a8190fc518b6769257896605f3aee091aeb60b50Glenn Kastennamespace android { 27a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 28a8190fc518b6769257896605f3aee091aeb60b50Glenn Kastenaudio_track_cblk_t::audio_track_cblk_t() 29f20e1d8df84c5fbeeace0052d100982ae39bb7a4Glenn Kasten : mServer(0), frameCount_(0), mFutex(0), mMinimum(0), 3096f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten mVolumeLR(0x10001000), mSampleRate(0), mSendLevel(0), mName(0), mFlags(0) 31a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten memset(&u, 0, sizeof(u)); 33a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 34a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenProxy::Proxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, size_t frameSize, 389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool isOut, bool clientInServer) 399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : mCblk(cblk), mBuffers(buffers), mFrameCount(frameCount), mFrameSize(frameSize), 409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFrameCountP2(roundup(frameCount)), mIsOut(isOut), mClientInServer(clientInServer), 417db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mIsShutdown(false), mUnreleased(0) 42a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 44a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenClientProxy::ClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer), mEpoch(0) 509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenconst struct timespec ClientProxy::kForever = {INT_MAX /*tv_sec*/, 0 /*tv_nsec*/}; 549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenconst struct timespec ClientProxy::kNonBlocking = {0 /*tv_sec*/, 0 /*tv_nsec*/}; 559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#define MEASURE_NS 10000000 // attempt to provide accurate timeouts if requested >= MEASURE_NS 579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// To facilitate quicker recovery from server failure, this value limits the timeout per each futex 599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// wait. However it does not protect infinite timeouts. If defined to be zero, there is no limit. 609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// FIXME May not be compatible with audio tunneling requirements where timeout should be in the 619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// order of minutes. 629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#define MAX_SEC 5 639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenstatus_t ClientProxy::obtainBuffer(Buffer* buffer, const struct timespec *requested, 659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec *elapsed) 669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 677db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec total; // total elapsed time spent waiting 699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec = 0; 709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec = 0; 719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool measure = elapsed != NULL; // whether to measure total elapsed time spent waiting 72a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t status; 749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum { 759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_ZERO, // requested == NULL || *requested == 0 769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_INFINITE, // *requested == infinity 779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_FINITE, // 0 < *requested < infinity 789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } timeout; 809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_ZERO; 829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_ZERO; 849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (requested->tv_sec == INT_MAX) { 859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_INFINITE; 869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_FINITE; 889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested->tv_sec > 0 || requested->tv_nsec >= MEASURE_NS) { 899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten measure = true; 909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec before; 939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool beforeIsValid = false; 949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool ignoreInitialPendingInterrupt = true; 969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for shared memory corruption 979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_INIT; 999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten for (;;) { 10296f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~CBLK_INTERRUPT, &cblk->mFlags); 1039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for track invalidation by server, or server death detection 1049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flags & CBLK_INVALID) { 1059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("Track invalidated"); 1069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = DEAD_OBJECT; 1079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // check for obtainBuffer interrupted by client 1109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!ignoreInitialPendingInterrupt && (flags & CBLK_INTERRUPT)) { 1119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("obtainBuffer() interrupted by client"); 1129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = -EINTR; 1139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ignoreInitialPendingInterrupt = false; 1169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord) 1179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 1189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 1199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 1209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The barrier following the read of mFront is probably redundant. 1219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // We're about to perform a conditional branch based on 'filled', 1229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // which will force the processor to observe the read of mFront 1239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // prior to allowing data writes starting at mRaw. 1249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // However, the processor may support speculative execution, 1259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and be unable to undo speculative writes into shared memory. 1269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The barrier will prevent such speculative execution. 1279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 1289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 1299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // On the other hand, this barrier is required. 1319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 1329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = cblk->u.mStreaming.mFront; 1339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 1359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not be overfull 1369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 1379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("Shared memory control block is corrupt (filled=%d); shutting down", filled); 1389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 1399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_INIT; 1409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // don't allow filling pipe beyond the nominal size 1439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t avail = mIsOut ? mFrameCount - filled : filled; 1449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (avail > 0) { 1459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'avail' may be non-contiguous, so return only the first contiguous chunk 1469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t part1; 1479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 1489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 1499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 1509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 1529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 1539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > avail) { 1559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = avail; 1569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > buffer->mFrameCount) { 1589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = buffer->mFrameCount; 1599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = part1; 1619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 1629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? rear : front) * mFrameSize] : NULL; 1639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = avail - part1; 1647db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = part1; 1659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_ERROR; 1669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 1679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec remaining; 1699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten const struct timespec *ts; 1709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten switch (timeout) { 1719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_ZERO: 1729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = WOULD_BLOCK; 1739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_INFINITE: 1759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 1769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 1779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_FINITE: 1789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_CONTINUE; 1799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (MAX_SEC == 0) { 1809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = requested; 1819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 1829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // fall through 1849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_CONTINUE: 1859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 1869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!measure || requested->tv_sec < total.tv_sec || 1879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 1889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = TIMED_OUT; 1899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = requested->tv_sec - total.tv_sec; 1929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 1939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec += 1000000000; 1949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec++; 1959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 1979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = MAX_SEC; 1989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec = 0; 1999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = &remaining; 2019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 203b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald LOG_FATAL("obtainBuffer() timeout=%d", timeout); 2049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 2059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2070d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 2080d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 2099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int rc; 2109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure && !beforeIsValid) { 2119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &before); 2129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int ret = __futex_syscall4(&cblk->mFutex, 2150d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 2169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // update total elapsed time spent waiting 2179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 2189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec after; 2199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &after); 2209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec += after.tv_sec - before.tv_sec; 2219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten long deltaNs = after.tv_nsec - before.tv_nsec; 2229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (deltaNs < 0) { 2239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten deltaNs += 1000000000; 2249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec--; 2259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((total.tv_nsec += deltaNs) >= 1000000000) { 2279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec -= 1000000000; 2289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec++; 2299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten before = after; 2319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten switch (ret) { 2349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case 0: // normal wakeup by server, or by binderDied() 2359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case -EWOULDBLOCK: // benign race condition with server 2369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case -EINTR: // wait was interrupted by signal or other spurious wakeup 2379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case -ETIMEDOUT: // time-out expired 2387db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // FIXME these error/non-0 status are being dropped 2399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 2419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("%s unexpected error %d", __func__, ret); 2429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = -ret; 2439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 245a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 246a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 247a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 2489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenend: 2499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (status != NO_ERROR) { 2509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 2519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 2529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 2537db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 2549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (elapsed != NULL) { 2569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten *elapsed = total; 257a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 2589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 2599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten requested = &kNonBlocking; 2609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 262b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("requested %ld.%03ld elapsed %ld.%03ld", 263b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested->tv_sec, requested->tv_nsec / 1000000, 264b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec, total.tv_nsec / 1000000); 2659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return status; 2679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 268a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 2699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::releaseBuffer(Buffer* buffer) 2709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 2717db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 2729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 2737db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 2747db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 2757db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 2767db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 2777db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 2789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 2799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2807db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 2817db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased -= stepCount; 2829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 2839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Both of these barriers are required 2849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 2859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 2869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 2879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 2889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 2899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 2909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 291a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 292a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 2939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::binderDied() 294a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 2959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 29696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INVALID, &cblk->mFlags) & CBLK_INVALID)) { 2979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // it seems that a FUTEX_WAKE_PRIVATE will not wake a FUTEX_WAIT, even within same process 2989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (void) __futex_syscall3(&cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 2999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1); 3009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 302a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::interrupt() 3049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 30696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INTERRUPT, &cblk->mFlags) & CBLK_INTERRUPT)) { 3079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (void) __futex_syscall3(&cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 3089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1); 309a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 3109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 311a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t ClientProxy::getMisalignment() 3139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 3159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (mFrameCountP2 - (mIsOut ? cblk->u.mStreaming.mRear : cblk->u.mStreaming.mFront)) & 3169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (mFrameCountP2 - 1); 3179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 318a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 3209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 3219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid AudioTrackClientProxy::flush() 3229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mCblk->u.mStreaming.mFlush++; 3249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 3259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 326bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::clearStreamEndDone() { 32796f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (android_atomic_and(~CBLK_STREAM_END_DONE, &mCblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 328bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 329bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 330bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::getStreamEndDone() const { 33196f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (mCblk->mFlags & CBLK_STREAM_END_DONE) != 0; 332bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 333bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 334b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldstatus_t AudioTrackClientProxy::waitStreamEndDone(const struct timespec *requested) 335b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald{ 336b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec total; // total elapsed time spent waiting 337b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec = 0; 338b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_nsec = 0; 339b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald audio_track_cblk_t* cblk = mCblk; 340b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status_t status; 341b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald enum { 342b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_ZERO, // requested == NULL || *requested == 0 343b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_INFINITE, // *requested == infinity 344b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_FINITE, // 0 < *requested < infinity 345b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 346b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } timeout; 347b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 348b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 349b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 350b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 351b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == INT_MAX) { 352b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_INFINITE; 353b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else { 354b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_FINITE; 355b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 356b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald for (;;) { 35796f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~(CBLK_INTERRUPT|CBLK_STREAM_END_DONE), &cblk->mFlags); 358b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for track invalidation by server, or server death detection 359b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INVALID) { 360b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("Track invalidated"); 361b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = DEAD_OBJECT; 362b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 363b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 364b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_STREAM_END_DONE) { 365b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("stream end received"); 366b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = NO_ERROR; 367b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 368b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 369b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for obtainBuffer interrupted by client 370b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for obtainBuffer interrupted by client 371b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INTERRUPT) { 372b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("waitStreamEndDone() interrupted by client"); 373b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = -EINTR; 374b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 375b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 376b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec remaining; 377b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald const struct timespec *ts; 378b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald switch (timeout) { 379b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_ZERO: 380b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = WOULD_BLOCK; 381b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 382b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_INFINITE: 383b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 384b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 385b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_FINITE: 386b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_CONTINUE; 387b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (MAX_SEC == 0) { 388b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = requested; 389b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 390b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 391b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // fall through 392b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_CONTINUE: 393b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 394b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested->tv_sec < total.tv_sec || 395b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 396b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = TIMED_OUT; 397b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 398b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 399b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = requested->tv_sec - total.tv_sec; 400b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 401b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec += 1000000000; 402b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec++; 403b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 404b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 405b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = MAX_SEC; 406b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec = 0; 407b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 408b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = &remaining; 409b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 410b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 411b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald LOG_FATAL("waitStreamEndDone() timeout=%d", timeout); 412b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 413b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 414b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 415b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 416b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 417b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int rc; 418b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int ret = __futex_syscall4(&cblk->mFutex, 419b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 420b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald switch (ret) { 421b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case 0: // normal wakeup by server, or by binderDied() 422b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case -EWOULDBLOCK: // benign race condition with server 423b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case -EINTR: // wait was interrupted by signal or other spurious wakeup 424b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case -ETIMEDOUT: // time-out expired 425b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 426b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 427b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGE("%s unexpected error %d", __func__, ret); 428b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = -ret; 429b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 430b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 431b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 432b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 433b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 434b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldend: 435b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 436b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested = &kNonBlocking; 437b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 438b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return status; 439b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald} 440b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 4419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 4429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackClientProxy::StaticAudioTrackClientProxy(audio_track_cblk_t* cblk, void *buffers, 4449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 4459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackClientProxy(cblk, buffers, frameCount, frameSize), 4469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mMutator(&cblk->u.mStatic.mSingleStateQueue), mBufferPosition(0) 4479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::flush() 4519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten LOG_FATAL("static flush"); 4539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::setLoop(size_t loopStart, size_t loopEnd, int loopCount) 4569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten StaticAudioTrackState newState; 4589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newState.mLoopStart = loopStart; 4599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newState.mLoopEnd = loopEnd; 4609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newState.mLoopCount = loopCount; 4619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mBufferPosition = loopStart; 4629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (void) mMutator.push(newState); 4639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackClientProxy::getBufferPosition() 4669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t bufferPosition; 4689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mMutator.ack()) { 4699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bufferPosition = mCblk->u.mStatic.mBufferPosition; 4709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (bufferPosition > mFrameCount) { 4719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bufferPosition = mFrameCount; 472a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 4739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 4749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bufferPosition = mBufferPosition; 475a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 4769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return bufferPosition; 4779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 480a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 4819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenServerProxy::ServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 4829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 4837db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer), 4849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient(0), mFlush(0), mDeferWake(false) 4859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenstatus_t ServerProxy::obtainBuffer(Buffer* buffer) 4899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4907db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 4919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 4927db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 4939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 4947db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten { 4959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 4969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord), 4979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // or use previous cached value from framesReady(), with added barrier if it omits. 4989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 4999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 5009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // See notes on barriers at ClientProxy::obtainBuffer() 5019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t flush = cblk->u.mStreaming.mFlush; 5039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 504b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald front = cblk->u.mStreaming.mFront; 5059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flush != mFlush) { 5069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFlush = flush; 507050501d11d944dcb256d37d3b86bd658d94f6a7fGlenn Kasten // effectively obtain then release whatever is in the buffer 508050501d11d944dcb256d37d3b86bd658d94f6a7fGlenn Kasten android_atomic_release_store(rear, &cblk->u.mStreaming.mFront); 509b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (front != rear) { 510b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 511b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 512b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald (void) __futex_syscall3(&cblk->mFutex, 513b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 514b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 515b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 516b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald front = rear; 517a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 5189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 5209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 5219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 5239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 5249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 5259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("Shared memory control block is corrupt (filled=%d); shutting down", filled); 5269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 5279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 5297db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 530a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 5319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // don't allow filling pipe beyond the nominal size 5329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t availToServer; 5339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = filled; 5359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = mFrameCount - filled; 5369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = mFrameCount - filled; 5389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = filled; 5399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'availToServer' may be non-contiguous, so return only the first contiguous chunk 5419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t part1; 5429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 5449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 5459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 5479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 5489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > availToServer) { 5509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = availToServer; 5519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t ask = buffer->mFrameCount; 5539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > ask) { 5549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = ask; 5559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // is assignment redundant in some cases? 5579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = part1; 5589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 5599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? front : rear) * mFrameSize] : NULL; 5609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = availToServer - part1; 5619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = part1; 5629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // optimization to avoid waking up the client too early 5639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME need to test for recording 5649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mDeferWake = part1 < ask && availToServer >= ask; 5659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return part1 > 0 ? NO_ERROR : WOULD_BLOCK; 5667db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten } 5677db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kastenno_init: 5687db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 5697db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 5707db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 5717db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 5727db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten return NO_INIT; 5739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 574a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 5759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ServerProxy::releaseBuffer(Buffer* buffer) 5769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5777db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 5789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 5797db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 5807db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 5817db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 5829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 5839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 5849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 5859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5867db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 5879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 5889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 5899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 5919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 5929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 5949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 595a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 596a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 597f20e1d8df84c5fbeeace0052d100982ae39bb7a4Glenn Kasten mCblk->mServer += stepCount; 598a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 5999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t half = mFrameCount / 2; 6009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (half == 0) { 6019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten half = 1; 6029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t minimum = cblk->mMinimum; 6049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (minimum == 0) { 6059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = mIsOut ? half : 1; 6069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (minimum > half) { 6079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = half; 6089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 60993bb77da5481ab75c2cd6e3aa681839273c6e43dGlenn Kasten // FIXME AudioRecord wakeup needs to be optimized; it currently wakes up client every time 61093bb77da5481ab75c2cd6e3aa681839273c6e43dGlenn Kasten if (!mIsOut || (!mDeferWake && mAvailToClient + stepCount >= minimum)) { 6119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGV("mAvailToClient=%u stepCount=%u minimum=%u", mAvailToClient, stepCount, minimum); 6120d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 6130d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 6149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (void) __futex_syscall3(&cblk->mFutex, 6159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 6169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 617a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 6209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 6219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 622a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 623a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 6259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t AudioTrackServerProxy::framesReady() 627a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 6289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten LOG_ALWAYS_FATAL_IF(!mIsOut); 6299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 6319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 6329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 634b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 635b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t flush = cblk->u.mStreaming.mFlush; 636b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flush != mFlush) { 637b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return mFrameCount; 638b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 6399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // the acquire might not be necessary since not doing a subsequent read 6409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 6419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - cblk->u.mStreaming.mFront; 6429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 6439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 6449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("Shared memory control block is corrupt (filled=%d); shutting down", filled); 6459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 6469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 6479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // cache this value for later use by obtainBuffer(), with added barrier 6499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and racy if called by normal mixer thread 6509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // ignores flush(), so framesReady() may report a larger mFrameCount than obtainBuffer() 6519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return filled; 652a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 653a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 654bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackServerProxy::setStreamEndDone() { 655bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent bool old = 65696f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten (android_atomic_or(CBLK_STREAM_END_DONE, &mCblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 657bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent if (!old) { 658bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent (void) __futex_syscall3(&mCblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 659bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 1); 660bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent } 661bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent return old; 662bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 663bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 6649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 6659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackServerProxy::StaticAudioTrackServerProxy(audio_track_cblk_t* cblk, void *buffers, 6679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 6689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackServerProxy(cblk, buffers, frameCount, frameSize), 6699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mObserver(&cblk->u.mStatic.mSingleStateQueue), mPosition(0), 6709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd(frameCount), mFramesReadyIsCalledByMultipleThreads(false) 671a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 6729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopStart = 0; 6739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopEnd = 0; 6749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopCount = 0; 675a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 676a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::framesReadyIsCalledByMultipleThreads() 678a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 6799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFramesReadyIsCalledByMultipleThreads = true; 6809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 681a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackServerProxy::framesReady() 6839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 6849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME 6859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // This is racy if called by normal mixer thread, 6869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // as we're reading 2 independent variables without a lock. 6879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Can't call mObserver.poll(), as we might be called from wrong thread. 6889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // If looping is enabled, should return a higher number (since includes non-contiguous). 6899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = mPosition; 6909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!mFramesReadyIsCalledByMultipleThreads) { 6919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t positionOrStatus = pollPosition(); 6929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (positionOrStatus >= 0) { 6939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten position = (size_t) positionOrStatus; 6949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 695a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t end = mEnd; 6979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return position < end ? end - position : 0; 698a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 699a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenssize_t StaticAudioTrackServerProxy::pollPosition() 701a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = mPosition; 7039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten StaticAudioTrackState state; 7049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mObserver.poll(state)) { 7059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool valid = false; 7069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t loopStart = state.mLoopStart; 7079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t loopEnd = state.mLoopEnd; 7089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (state.mLoopCount == 0) { 7099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (loopStart > mFrameCount) { 7109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten loopStart = mFrameCount; 711a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // ignore loopEnd 7139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mPosition = position = loopStart; 7149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd = mFrameCount; 7159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopCount = 0; 7169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 7179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (loopStart < loopEnd && loopEnd <= mFrameCount && 7199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten loopEnd - loopStart >= MIN_LOOP) { 7209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(loopStart <= position && position < loopEnd)) { 7219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mPosition = position = loopStart; 7229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd = loopEnd; 7249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState = state; 7259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 726a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 727a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!valid) { 7299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("%s client pushed an invalid state, shutting down", __func__); 7309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 7319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (ssize_t) NO_INIT; 7329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mCblk->u.mStatic.mBufferPosition = position; 734a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (ssize_t) position; 736a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 737a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenstatus_t StaticAudioTrackServerProxy::obtainBuffer(Buffer* buffer) 739a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 7419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 7429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 7449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 7459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_INIT; 7469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t positionOrStatus = pollPosition(); 7489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (positionOrStatus < 0) { 7499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 7509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 7529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 7539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (status_t) positionOrStatus; 7549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = (size_t) positionOrStatus; 7569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t avail; 7579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (position < mEnd) { 7589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = mEnd - position; 7599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t wanted = buffer->mFrameCount; 7609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (avail < wanted) { 7619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = avail; 7629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = wanted; 7649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = &((char *) mBuffers)[position * mFrameSize]; 7669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = 0; 7689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 7699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; // FIXME should be > 0 for looping 7729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = avail; 7739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_ERROR; 7749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 775a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::releaseBuffer(Buffer* buffer) 7779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 7789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 7797db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased)); 7809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (stepCount == 0) { 7817db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 7829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 7839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 7849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 785a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 7879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 7889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = mPosition; 7899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t newPosition = position + stepCount; 7909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t setFlags = 0; 7919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(position <= newPosition && newPosition <= mFrameCount)) { 7929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGW("%s newPosition %u outside [%u, %u]", __func__, newPosition, position, mFrameCount); 7939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newPosition = mFrameCount; 7949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (mState.mLoopCount != 0 && newPosition == mState.mLoopEnd) { 7959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mState.mLoopCount == -1 || --mState.mLoopCount != 0) { 7969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newPosition = mState.mLoopStart; 7979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_CYCLE; 7989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd = mFrameCount; // this is what allows playback to continue after the loop 8009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_FINAL; 8019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 802a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 8039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (newPosition == mFrameCount) { 8049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags |= CBLK_BUFFER_END; 8059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mPosition = newPosition; 8079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 808f20e1d8df84c5fbeeace0052d100982ae39bb7a4Glenn Kasten cblk->mServer += stepCount; 8099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten cblk->u.mStatic.mBufferPosition = newPosition; 8109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (setFlags != 0) { 81196f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten (void) android_atomic_or(setFlags, &cblk->mFlags); 8129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // this would be a good place to wake a futex 8139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 8159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 8169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 8179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 818a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 819a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 8219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 822a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} // namespace android 823