AudioTrackShared.cpp revision 20f51b1ea04c410a25f214e37bcdb586e2a028cc
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 28a8190fc518b6769257896605f3aee091aeb60b50Glenn Kastenaudio_track_cblk_t::audio_track_cblk_t() 2974935e44734c1ec235c2b6677db3e0dbefa5ddb8Glenn Kasten : mServer(0), mFutex(0), mMinimum(0), 30c56f3426099a3cf2d07ccff8886050c7fbce140fGlenn Kasten mVolumeLR(GAIN_MINIFLOAT_PACKED_UNITY), mSampleRate(0), mSendLevel(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)) { 1376dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten if (mIsOut) { 13834fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd, mFrameCount=%zu); " 1396dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten "shutting down", filled, mFrameCount); 1406dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten mIsShutdown = true; 1416dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten status = NO_INIT; 1426dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten goto end; 1436dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten } 1446dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten // for input, sync up on overrun 1456dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten filled = 0; 1466dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten cblk->u.mStreaming.mFront = rear; 1476dbb5e3336cfff1ad51d429fcb847307c06efd61Glenn Kasten (void) android_atomic_or(CBLK_OVERRUN, &cblk->mFlags); 1489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // don't allow filling pipe beyond the nominal size 1509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t avail = mIsOut ? mFrameCount - filled : filled; 1519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (avail > 0) { 1529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'avail' may be non-contiguous, so return only the first contiguous chunk 1539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t part1; 1549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 1559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 1569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 1579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 1589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 1599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 1609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > avail) { 1629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = avail; 1639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > buffer->mFrameCount) { 1659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = buffer->mFrameCount; 1669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = part1; 1689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 1699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? rear : front) * mFrameSize] : NULL; 1709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = avail - part1; 1717db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = part1; 1729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = NO_ERROR; 1739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 1749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec remaining; 1769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten const struct timespec *ts; 1779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten switch (timeout) { 1789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_ZERO: 1799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = WOULD_BLOCK; 1809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_INFINITE: 1829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 1839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 1849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_FINITE: 1859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten timeout = TIMEOUT_CONTINUE; 1869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (MAX_SEC == 0) { 1879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = requested; 1889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 1899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // fall through 1919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten case TIMEOUT_CONTINUE: 1929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 1939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!measure || requested->tv_sec < total.tv_sec || 1949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 1959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status = TIMED_OUT; 1969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 1979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 1989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = requested->tv_sec - total.tv_sec; 1999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 2009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec += 1000000000; 2019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec++; 2029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 2049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_sec = MAX_SEC; 2059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten remaining.tv_nsec = 0; 2069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = &remaining; 2089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 210adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("obtainBuffer() timeout=%d", timeout); 2119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ts = NULL; 2129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2140d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 2150d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 2169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure && !beforeIsValid) { 2179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &before); 2189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 220ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes errno = 0; 221ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 2220d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 2239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // update total elapsed time spent waiting 2249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 2259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec after; 2269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten clock_gettime(CLOCK_MONOTONIC, &after); 2279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec += after.tv_sec - before.tv_sec; 2289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten long deltaNs = after.tv_nsec - before.tv_nsec; 2299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (deltaNs < 0) { 2309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten deltaNs += 1000000000; 2319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec--; 2329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if ((total.tv_nsec += deltaNs) >= 1000000000) { 2349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_nsec -= 1000000000; 2359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten total.tv_sec++; 2369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten before = after; 2389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten beforeIsValid = true; 2399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 240ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes switch (errno) { 241ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case 0: // normal wakeup by server, or by binderDied() 242ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EWOULDBLOCK: // benign race condition with server 243ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EINTR: // wait was interrupted by signal or other spurious wakeup 244ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case ETIMEDOUT: // time-out expired 2457db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // FIXME these error/non-0 status are being dropped 2469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten break; 2479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten default: 248ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes status = errno; 249ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes ALOGE("%s unexpected error %s", __func__, strerror(status)); 2509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten goto end; 2519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 252a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 253a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 254a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 2559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenend: 2569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (status != NO_ERROR) { 2579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 2589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 2599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 2607db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 2619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (elapsed != NULL) { 2639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten *elapsed = total; 264a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 2659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (requested == NULL) { 2669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten requested = &kNonBlocking; 2679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (measure) { 269b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("requested %ld.%03ld elapsed %ld.%03ld", 270b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested->tv_sec, requested->tv_nsec / 1000000, 271b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec, total.tv_nsec / 1000000); 2729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return status; 2749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 275a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 2769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::releaseBuffer(Buffer* buffer) 2779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 2787db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 2799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 2807db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 2817db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 2827db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 2837db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 2847db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 2859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 2869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 2877db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 2887db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased -= stepCount; 2899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 2909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Both of these barriers are required 2919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 2929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 2939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 2949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 2959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 2969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 2979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 298a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 299a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::binderDied() 301a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 3029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 30396f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INVALID, &cblk->mFlags) & CBLK_INVALID)) { 3049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // it seems that a FUTEX_WAKE_PRIVATE will not wake a FUTEX_WAIT, even within same process 305ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 306ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 3079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 3089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 309a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ClientProxy::interrupt() 3119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 31396f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten if (!(android_atomic_or(CBLK_INTERRUPT, &cblk->mFlags) & CBLK_INTERRUPT)) { 314ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 315ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 316a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 3179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 318a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 3199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t ClientProxy::getMisalignment() 3209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 3219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 3229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (mFrameCountP2 - (mIsOut ? cblk->u.mStreaming.mRear : cblk->u.mStreaming.mFront)) & 3239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (mFrameCountP2 - 1); 3249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 325a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 326cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurentsize_t ClientProxy::getFramesFilled() { 327cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent audio_track_cblk_t* cblk = mCblk; 328cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent int32_t front; 329cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent int32_t rear; 330cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent 331cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent if (mIsOut) { 332cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 333cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent rear = cblk->u.mStreaming.mRear; 334cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent } else { 335cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 336cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent front = cblk->u.mStreaming.mFront; 337cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent } 338cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent ssize_t filled = rear - front; 339cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent // pipe should not be overfull 340cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 34134fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 342cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent return 0; 343cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent } 344cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent return (size_t)filled; 345cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent} 346cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0Eric Laurent 3479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 3489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 3499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid AudioTrackClientProxy::flush() 3509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 35120f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // This works for mFrameCountP2 <= 2^30 35220f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t increment = mFrameCountP2 << 1; 35320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t mask = increment - 1; 35420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten audio_track_cblk_t* cblk = mCblk; 35520f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten int32_t newFlush = (cblk->u.mStreaming.mRear & mask) | 35620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ((cblk->u.mStreaming.mFlush & ~mask) + increment); 35720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten android_atomic_release_store(newFlush, &cblk->u.mStreaming.mFlush); 3589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 3599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 360bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::clearStreamEndDone() { 36196f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (android_atomic_and(~CBLK_STREAM_END_DONE, &mCblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 362bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 363bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 364bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackClientProxy::getStreamEndDone() const { 36596f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten return (mCblk->mFlags & CBLK_STREAM_END_DONE) != 0; 366bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 367bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 368b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldstatus_t AudioTrackClientProxy::waitStreamEndDone(const struct timespec *requested) 369b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald{ 370b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec total; // total elapsed time spent waiting 371b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_sec = 0; 372b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald total.tv_nsec = 0; 373b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald audio_track_cblk_t* cblk = mCblk; 374b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status_t status; 375b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald enum { 376b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_ZERO, // requested == NULL || *requested == 0 377b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_INFINITE, // *requested == infinity 378b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_FINITE, // 0 < *requested < infinity 379b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald TIMEOUT_CONTINUE, // additional chances after TIMEOUT_FINITE 380b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } timeout; 381b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 382b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 383b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == 0 && requested->tv_nsec == 0) { 384b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_ZERO; 385b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else if (requested->tv_sec == INT_MAX) { 386b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_INFINITE; 387b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } else { 388b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_FINITE; 389b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 390b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald for (;;) { 39196f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten int32_t flags = android_atomic_and(~(CBLK_INTERRUPT|CBLK_STREAM_END_DONE), &cblk->mFlags); 392b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for track invalidation by server, or server death detection 393b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INVALID) { 394b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("Track invalidated"); 395b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = DEAD_OBJECT; 396b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 397b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 398b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_STREAM_END_DONE) { 399b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("stream end received"); 400b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = NO_ERROR; 401b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 402b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 403b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for obtainBuffer interrupted by client 404b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // check for obtainBuffer interrupted by client 405b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flags & CBLK_INTERRUPT) { 406b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ALOGV("waitStreamEndDone() interrupted by client"); 407b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = -EINTR; 408b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 409b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 410b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald struct timespec remaining; 411b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald const struct timespec *ts; 412b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald switch (timeout) { 413b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_ZERO: 414b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = WOULD_BLOCK; 415b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 416b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_INFINITE: 417b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 418b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 419b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_FINITE: 420b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald timeout = TIMEOUT_CONTINUE; 421b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (MAX_SEC == 0) { 422b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = requested; 423b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 424b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 425b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // fall through 426b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald case TIMEOUT_CONTINUE: 427b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald // FIXME we do not retry if requested < 10ms? needs documentation on this state machine 428b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested->tv_sec < total.tv_sec || 429b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald (requested->tv_sec == total.tv_sec && requested->tv_nsec <= total.tv_nsec)) { 430b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status = TIMED_OUT; 431b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 432b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 433b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = requested->tv_sec - total.tv_sec; 434b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if ((remaining.tv_nsec = requested->tv_nsec - total.tv_nsec) < 0) { 435b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec += 1000000000; 436b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec++; 437b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 438b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (0 < MAX_SEC && MAX_SEC < remaining.tv_sec) { 439b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_sec = MAX_SEC; 440b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald remaining.tv_nsec = 0; 441b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 442b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = &remaining; 443b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 444b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 445adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("waitStreamEndDone() timeout=%d", timeout); 446b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald ts = NULL; 447b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 448b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 449b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex); 450b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 451ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes errno = 0; 452ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 453b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts); 454ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes switch (errno) { 455ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case 0: // normal wakeup by server, or by binderDied() 456ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EWOULDBLOCK: // benign race condition with server 457ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case EINTR: // wait was interrupted by signal or other spurious wakeup 458ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes case ETIMEDOUT: // time-out expired 459b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald break; 460b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald default: 461ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes status = errno; 462ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes ALOGE("%s unexpected error %s", __func__, strerror(status)); 463b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald goto end; 464b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 465b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 466b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 467b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 468b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgeraldend: 469b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (requested == NULL) { 470b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald requested = &kNonBlocking; 471b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 472b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return status; 473b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald} 474b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 4759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 4769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackClientProxy::StaticAudioTrackClientProxy(audio_track_cblk_t* cblk, void *buffers, 4789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 4799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackClientProxy(cblk, buffers, frameCount, frameSize), 4809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mMutator(&cblk->u.mStatic.mSingleStateQueue), mBufferPosition(0) 4819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 4829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::flush() 4859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 486adad3d7d935da176ff24941b4ae9edf7340e9b96Glenn Kasten LOG_ALWAYS_FATAL("static flush"); 4879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 4889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 4899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackClientProxy::setLoop(size_t loopStart, size_t loopEnd, int loopCount) 4909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 491fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This can only happen on a 64-bit client 492fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten if (loopStart > UINT32_MAX || loopEnd > UINT32_MAX) { 493fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // FIXME Should return an error status 494fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten return; 495fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten } 4969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten StaticAudioTrackState newState; 497fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten newState.mLoopStart = (uint32_t) loopStart; 498fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten newState.mLoopEnd = (uint32_t) loopEnd; 4999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newState.mLoopCount = loopCount; 5009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mBufferPosition = loopStart; 5019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten (void) mMutator.push(newState); 5029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackClientProxy::getBufferPosition() 5059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t bufferPosition; 5079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mMutator.ack()) { 508fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten bufferPosition = (size_t) mCblk->u.mStatic.mBufferPosition; 5099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (bufferPosition > mFrameCount) { 5109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bufferPosition = mFrameCount; 511a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 5129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bufferPosition = mBufferPosition; 514a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 5159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return bufferPosition; 5169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 519a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 5209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenServerProxy::ServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 5219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize, bool isOut, bool clientInServer) 5227db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten : Proxy(cblk, buffers, frameCount, frameSize, isOut, clientInServer), 523ce8828a016b082f730152af2204b8ea3610dc1ecGlenn Kasten mAvailToClient(0), mFlush(0) 5249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 5269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5272e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kastenstatus_t ServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush) 5289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 5297db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0); 5309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 5317db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 5329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5337db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten { 5349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 5359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // compute number of frames available to write (AudioTrack) or read (AudioRecord), 5369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // or use previous cached value from framesReady(), with added barrier if it omits. 5379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front; 5389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear; 5399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // See notes on barriers at ClientProxy::obtainBuffer() 5409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t flush = cblk->u.mStreaming.mFlush; 5429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 543b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald front = cblk->u.mStreaming.mFront; 5449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (flush != mFlush) { 545050501d11d944dcb256d37d3b86bd658d94f6a7fGlenn Kasten // effectively obtain then release whatever is in the buffer 54620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten size_t mask = (mFrameCountP2 << 1) - 1; 54720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten int32_t newFront = (front & ~mask) | (flush & mask); 54820f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ssize_t filled = rear - newFront; 54920f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // Rather than shutting down on a corrupt flush, just treat it as a full flush 55020f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 55120f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten ALOGE("mFlush %#x -> %#x, front %#x, rear %#x, mask %#x, newFront %#x, filled %d=%#x", 55220f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten mFlush, flush, front, rear, mask, newFront, filled, filled); 55320f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten newFront = rear; 55420f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten } 55520f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten mFlush = flush; 55620f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten android_atomic_release_store(newFront, &cblk->u.mStreaming.mFront); 55720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // There is no danger from a false positive, so err on the side of caution 55820f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten if (true /*front != newFront*/) { 559b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 560b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (!(old & CBLK_FUTEX_WAKE)) { 561ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 562ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 563b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 564b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 56520f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten front = newFront; 566a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 5679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront); 5699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear = cblk->u.mStreaming.mRear; 5709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - front; 5729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 5739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 57434fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 5759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 5769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 5787db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten goto no_init; 579a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 5809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // don't allow filling pipe beyond the nominal size 5819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t availToServer; 5829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = filled; 5849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = mFrameCount - filled; 5859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten availToServer = mFrameCount - filled; 5879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mAvailToClient = filled; 5889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 'availToServer' may be non-contiguous, so return only the first contiguous chunk 5909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t part1; 5919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 5929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten front &= mFrameCountP2 - 1; 5939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - front; 5949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 5959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten rear &= mFrameCountP2 - 1; 5969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = mFrameCountP2 - rear; 5979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 5989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > availToServer) { 5999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = availToServer; 6009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t ask = buffer->mFrameCount; 6029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (part1 > ask) { 6039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten part1 = ask; 6049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // is assignment redundant in some cases? 6069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = part1; 6079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = part1 > 0 ? 6089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten &((char *) mBuffers)[(mIsOut ? front : rear) * mFrameSize] : NULL; 6099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = availToServer - part1; 6102e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten // After flush(), allow releaseBuffer() on a previously obtained buffer; 6112e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten // see "Acknowledge any pending flush()" in audioflinger/Tracks.cpp. 6122e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten if (!ackFlush) { 6132e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten mUnreleased = part1; 6142e422c472c91aa7912befd0fc038d1e11f354bc1Glenn Kasten } 6159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return part1 > 0 ? NO_ERROR : WOULD_BLOCK; 6167db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten } 6177db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kastenno_init: 6187db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 6197db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mRaw = NULL; 6207db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mNonContig = 0; 6217db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten mUnreleased = 0; 6227db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten return NO_INIT; 6239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 624a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid ServerProxy::releaseBuffer(Buffer* buffer) 6269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 6277db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(buffer == NULL); 6289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 6297db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten if (stepCount == 0 || mIsShutdown) { 6307db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 6317db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten buffer->mFrameCount = 0; 6329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 6339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 6349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 6359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6367db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased && mUnreleased <= mFrameCount)); 6379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 6389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 6399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsOut) { 6409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t front = cblk->u.mStreaming.mFront; 6419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + front, &cblk->u.mStreaming.mFront); 6429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 6439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = cblk->u.mStreaming.mRear; 6449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten android_atomic_release_store(stepCount + rear, &cblk->u.mStreaming.mRear); 645a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 646a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 647844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten cblk->mServer += stepCount; 648a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t half = mFrameCount / 2; 6509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (half == 0) { 6519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten half = 1; 6529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 653fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten size_t minimum = (size_t) cblk->mMinimum; 6549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (minimum == 0) { 6559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = mIsOut ? half : 1; 6569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (minimum > half) { 6579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten minimum = half; 6589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 65993bb77da5481ab75c2cd6e3aa681839273c6e43dGlenn Kasten // FIXME AudioRecord wakeup needs to be optimized; it currently wakes up client every time 660ce8828a016b082f730152af2204b8ea3610dc1ecGlenn Kasten if (!mIsOut || (mAvailToClient + stepCount >= minimum)) { 66134fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGV("mAvailToClient=%zu stepCount=%zu minimum=%zu", mAvailToClient, stepCount, minimum); 6620d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex); 6630d09a9bec07b3bec78bd473ff0bfcf0a261f3f25Glenn Kasten if (!(old & CBLK_FUTEX_WAKE)) { 664ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, 665ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1); 6669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 667a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 6689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 6709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 6719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 672a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 673a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 6749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 6759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t AudioTrackServerProxy::framesReady() 677a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 6789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten LOG_ALWAYS_FATAL_IF(!mIsOut); 6799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 6819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 6829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 684b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 685b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald int32_t flush = cblk->u.mStreaming.mFlush; 686b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald if (flush != mFlush) { 68720f51b1ea04c410a25f214e37bcdb586e2a028ccGlenn Kasten // FIXME should return an accurate value, but over-estimate is better than under-estimate 688b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald return mFrameCount; 689b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald } 6909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // the acquire might not be necessary since not doing a subsequent read 6919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear); 6929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t filled = rear - cblk->u.mStreaming.mFront; 6939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // pipe should not already be overfull 6949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(0 <= filled && (size_t) filled <= mFrameCount)) { 69534fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGE("Shared memory control block is corrupt (filled=%zd); shutting down", filled); 6969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 6979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return 0; 6989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 6999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // cache this value for later use by obtainBuffer(), with added barrier 7009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and racy if called by normal mixer thread 7019f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // ignores flush(), so framesReady() may report a larger mFrameCount than obtainBuffer() 7029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return filled; 703a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 704a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 705bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurentbool AudioTrackServerProxy::setStreamEndDone() { 706844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten audio_track_cblk_t* cblk = mCblk; 707bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent bool old = 708844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten (android_atomic_or(CBLK_STREAM_END_DONE, &cblk->mFlags) & CBLK_STREAM_END_DONE) != 0; 709bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent if (!old) { 710e348c5b72ad889389c7c1c900c121f0fbee221b5Elliott Hughes (void) syscall(__NR_futex, &cblk->mFutex, mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 711ee499291404a192b059f2e04c5afc65aa6cdd74cElliott Hughes 1); 712bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent } 713bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent return old; 714bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent} 715bfb1b832079bbb9426f72f3863199a54aefd02daEric Laurent 71682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kastenvoid AudioTrackServerProxy::tallyUnderrunFrames(uint32_t frameCount) 71782aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten{ 718844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten audio_track_cblk_t* cblk = mCblk; 719844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten cblk->u.mStreaming.mUnderrunFrames += frameCount; 72082aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 72182aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // FIXME also wake futex so that underrun is noticed more quickly 722844f88ccfcca95687e774bccb5e9065da61d33f8Glenn Kasten (void) android_atomic_or(CBLK_UNDERRUN, &cblk->mFlags); 72382aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten} 72482aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 7259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 7269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn KastenStaticAudioTrackServerProxy::StaticAudioTrackServerProxy(audio_track_cblk_t* cblk, void *buffers, 7289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameCount, size_t frameSize) 7299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten : AudioTrackServerProxy(cblk, buffers, frameCount, frameSize), 7309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mObserver(&cblk->u.mStatic.mSingleStateQueue), mPosition(0), 7319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd(frameCount), mFramesReadyIsCalledByMultipleThreads(false) 732a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopStart = 0; 7349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopEnd = 0; 7359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopCount = 0; 736a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 737a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::framesReadyIsCalledByMultipleThreads() 739a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mFramesReadyIsCalledByMultipleThreads = true; 7419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 742a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastensize_t StaticAudioTrackServerProxy::framesReady() 7449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 7459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME 7469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // This is racy if called by normal mixer thread, 7479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // as we're reading 2 independent variables without a lock. 7489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Can't call mObserver.poll(), as we might be called from wrong thread. 7499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // If looping is enabled, should return a higher number (since includes non-contiguous). 7509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = mPosition; 7519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!mFramesReadyIsCalledByMultipleThreads) { 7529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t positionOrStatus = pollPosition(); 7539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (positionOrStatus >= 0) { 7549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten position = (size_t) positionOrStatus; 7559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 756a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t end = mEnd; 7589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return position < end ? end - position : 0; 759a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 760a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 7619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenssize_t StaticAudioTrackServerProxy::pollPosition() 762a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 7639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = mPosition; 7649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten StaticAudioTrackState state; 7659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mObserver.poll(state)) { 7669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool valid = false; 7679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t loopStart = state.mLoopStart; 7689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t loopEnd = state.mLoopEnd; 7699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (state.mLoopCount == 0) { 7709f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (loopStart > mFrameCount) { 7719f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten loopStart = mFrameCount; 772a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // ignore loopEnd 7749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mPosition = position = loopStart; 7759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd = mFrameCount; 7769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState.mLoopCount = 0; 7779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 7789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 7799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (loopStart < loopEnd && loopEnd <= mFrameCount && 7809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten loopEnd - loopStart >= MIN_LOOP) { 7819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(loopStart <= position && position < loopEnd)) { 7829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mPosition = position = loopStart; 7839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 7849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd = loopEnd; 7859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mState = state; 7869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten valid = true; 787a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 788a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!valid) { 7909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ALOGE("%s client pushed an invalid state, shutting down", __func__); 7919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mIsShutdown = true; 7929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (ssize_t) NO_INIT; 7939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 794fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This may overflow, but client is not supposed to rely on it 795fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten mCblk->u.mStatic.mBufferPosition = (uint32_t) position; 796a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 7979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (ssize_t) position; 798a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 799a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8007c7be1e05634d96d08210efb4bdeb012ffba440dGlenn Kastenstatus_t StaticAudioTrackServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush __unused) 801a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten{ 8029f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mIsShutdown) { 8039f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 8049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 8059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 8069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 8079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_INIT; 8089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten ssize_t positionOrStatus = pollPosition(); 8109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (positionOrStatus < 0) { 8119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 8129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 8139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 8149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = 0; 8159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return (status_t) positionOrStatus; 8169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = (size_t) positionOrStatus; 8189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t avail; 8199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (position < mEnd) { 8209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = mEnd - position; 8219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t wanted = buffer->mFrameCount; 8229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (avail < wanted) { 8239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = avail; 8249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 8259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = wanted; 8269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = &((char *) mBuffers)[position * mFrameSize]; 8289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 8299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten avail = 0; 8309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 8319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 8329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; // FIXME should be > 0 for looping 8349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased = avail; 8359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return NO_ERROR; 8369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten} 837a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenvoid StaticAudioTrackServerProxy::releaseBuffer(Buffer* buffer) 8399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten{ 8409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t stepCount = buffer->mFrameCount; 8417db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten LOG_ALWAYS_FATAL_IF(!(stepCount <= mUnreleased)); 8429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (stepCount == 0) { 8437db7df0e8d9d7cee8ba374468cdbfa0108e3337cGlenn Kasten // prevent accidental re-use of buffer 8449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 8459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 8469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten return; 847a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 8489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mUnreleased -= stepCount; 8499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* cblk = mCblk; 8509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t position = mPosition; 8519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t newPosition = position + stepCount; 8529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int32_t setFlags = 0; 8539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (!(position <= newPosition && newPosition <= mFrameCount)) { 85434fb29696b0f3abf61b10f8d053b1f33d501de0aMark Salyzyn ALOGW("%s newPosition %zu outside [%zu, %zu]", __func__, newPosition, position, mFrameCount); 8559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newPosition = mFrameCount; 8569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else if (mState.mLoopCount != 0 && newPosition == mState.mLoopEnd) { 8579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (mState.mLoopCount == -1 || --mState.mLoopCount != 0) { 8589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten newPosition = mState.mLoopStart; 8599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_CYCLE; 8609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } else { 8619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mEnd = mFrameCount; // this is what allows playback to continue after the loop 8629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags = CBLK_LOOP_FINAL; 8639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 864a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten } 8659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (newPosition == mFrameCount) { 8669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten setFlags |= CBLK_BUFFER_END; 8679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten mPosition = newPosition; 8699f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 870f20e1d8df84c5fbeeace0052d100982ae39bb7a4Glenn Kasten cblk->mServer += stepCount; 871fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten // This may overflow, but client is not supposed to rely on it 872fdac7c00f9201bb3a9862069145f01d37e39755bGlenn Kasten cblk->u.mStatic.mBufferPosition = (uint32_t) newPosition; 8739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten if (setFlags != 0) { 87496f60d8f04432a1ed503b3e24d5736d28c63c9a2Glenn Kasten (void) android_atomic_or(setFlags, &cblk->mFlags); 8759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // this would be a good place to wake a futex 8769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } 8779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 8789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mFrameCount = 0; 8799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mRaw = NULL; 8809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten buffer->mNonContig = 0; 881a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} 882a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten 8837c7be1e05634d96d08210efb4bdeb012ffba440dGlenn Kastenvoid StaticAudioTrackServerProxy::tallyUnderrunFrames(uint32_t frameCount __unused) 88482aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten{ 88582aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // Unlike AudioTrackServerProxy::tallyUnderrunFrames() used for streaming tracks, 88682aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // we don't have a location to count underrun frames. The underrun frame counter 88782aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // only exists in AudioTrackSharedStreaming. Fortunately, underruns are not 88882aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // possible for static buffer tracks other than at end of buffer, so this is not a loss. 88982aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 89082aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten // FIXME also wake futex so that underrun is noticed more quickly 89182aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten (void) android_atomic_or(CBLK_UNDERRUN, &mCblk->mFlags); 89282aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten} 89382aaf94a5b18939e4d790bbc752031f3070704a3Glenn Kasten 8949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten// --------------------------------------------------------------------------- 8959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 896a8190fc518b6769257896605f3aee091aeb60b50Glenn Kasten} // namespace android 897