IOutputMixExt.c revision f51dba65751107c930759938775b75531ec1f330
1b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten/* 2b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * Copyright (C) 2010 The Android Open Source Project 3b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * 4b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * Licensed under the Apache License, Version 2.0 (the "License"); 5b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * you may not use this file except in compliance with the License. 6b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * You may obtain a copy of the License at 7b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * 8b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * http://www.apache.org/licenses/LICENSE-2.0 9b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * 10b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * Unless required by applicable law or agreed to in writing, software 11b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * distributed under the License is distributed on an "AS IS" BASIS, 12b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * See the License for the specific language governing permissions and 14b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten * limitations under the License. 15b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten */ 16b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 17b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten/* OutputMixExt implementation */ 18b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 19b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten#include "sles_allinclusive.h" 20e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten#include <math.h> 21b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 22b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten#ifdef USE_OUTPUTMIXEXT 23b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 24928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten// OutputMixExt is used by SDL, but is not specific to or dependent on SDL 25b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 26343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Summary of the gain, as an optimization for the mixer */ 27e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 2840d1c40832a448e23d0bb37512aee53222575c2eGlenn Kastentypedef enum { 29e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten GAIN_MUTE = 0, // mValue == 0.0f within epsilon 30e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten GAIN_UNITY = 1, // mValue == 1.0f within epsilon 31e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten GAIN_OTHER = 2 // 0.0f < mValue < 1.0f 3240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten} Summary; 3340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten 34ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 35343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Check whether a track has any data for us to read */ 364b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 37369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kastenstatic SLboolean track_check(Track *track) 384b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten{ 39928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert(NULL != track); 404b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten SLboolean trackHasData = SL_BOOLEAN_FALSE; 414b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 424b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten CAudioPlayer *audioPlayer = track->mAudioPlayer; 434b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (NULL != audioPlayer) { 444b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 454b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // track is initialized 464b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 47928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // FIXME This lock could block and result in stuttering; 48928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // a trylock with retry or lockless solution would be ideal 494b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_lock_exclusive(&audioPlayer->mObject); 50928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert(audioPlayer->mTrack == track); 514b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 528c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten SLuint32 framesMixed = track->mFramesMixed; 538c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (0 != framesMixed) { 548c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten track->mFramesMixed = 0; 558c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mFramesSinceLastSeek += framesMixed; 568c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mFramesSincePositionUpdate += framesMixed; 578c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 588c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten 594b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten SLboolean doBroadcast = SL_BOOLEAN_FALSE; 604b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten const BufferHeader *oldFront; 614b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 624b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (audioPlayer->mBufferQueue.mClearRequested) { 634b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // application thread(s) that call BufferQueue::Clear while mixer is active 64928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // will block synchronously until mixer acknowledges the Clear request 654b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mFront = &audioPlayer->mBufferQueue.mArray[0]; 664b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mRear = &audioPlayer->mBufferQueue.mArray[0]; 674b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mState.count = 0; 684f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten audioPlayer->mBufferQueue.mState.playIndex = 0; 694b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mClearRequested = SL_BOOLEAN_FALSE; 704b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = NULL; 714b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = 0; 724b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 734b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 744b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 75928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten if (audioPlayer->mDestroyRequested) { 76928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // an application thread that calls Object::Destroy while mixer is active will block 77928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // synchronously in the PreDestroy hook until mixer acknowledges the Destroy request 78f51dba65751107c930759938775b75531ec1f330Glenn Kasten COutputMix *outputMix = CAudioPlayer_GetOutputMix(audioPlayer); 79928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned i = track - outputMix->mOutputMixExt.mTracks; 80928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert( /* 0 <= i && */ i < MAX_TRACK); 81928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned mask = 1 << i; 82928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mAudioPlayer = NULL; 83928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert(outputMix->mOutputMixExt.mActiveMask & mask); 84928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten outputMix->mOutputMixExt.mActiveMask &= ~mask; 85928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mTrack = NULL; 86928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mDestroyRequested = SL_BOOLEAN_FALSE; 87928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 88928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten goto broadcast; 89928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten } 90928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten 914b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten switch (audioPlayer->mPlay.mState) { 924b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 934b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_PLAYING: // continue playing current track data 944b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (0 < track->mAvail) { 954b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten trackHasData = SL_BOOLEAN_TRUE; 964b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 974b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 984b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 994b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // try to get another buffer from queue 1004b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = audioPlayer->mBufferQueue.mFront; 1014b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (oldFront != audioPlayer->mBufferQueue.mRear) { 1024b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < audioPlayer->mBufferQueue.mState.count); 1034b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = oldFront->mBuffer; 1044b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = oldFront->mSize; 1054b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // note that the buffer stays on the queue while we are reading 1064b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mState = SL_PLAYSTATE_PLAYING; 1074b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten trackHasData = SL_BOOLEAN_TRUE; 1084b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } else { 1094b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // no buffers on queue, so playable but not playing 1104b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // NTH should be able to call a desperation callback when completely starved, 1114b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // or call less often than every buffer based on high/low water-marks 1124b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 113928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten 114928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // copy gains from audio player to track 115928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mGains[0] = audioPlayer->mGains[0]; 116928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mGains[1] = audioPlayer->mGains[1]; 1174b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1184b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1194b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_STOPPING: // application thread(s) called Play::SetPlayState(STOPPED) 1204b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mPosition = (SLmillisecond) 0; 1218c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mFramesSinceLastSeek = 0; 1228c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mFramesSincePositionUpdate = 0; 1238c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mLastSeekPosition = 0; 1244b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mState = SL_PLAYSTATE_STOPPED; 1258c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten // stop cancels a pending seek 1268c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mSeek.mPos = SL_TIME_UNKNOWN; 1274b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = audioPlayer->mBufferQueue.mFront; 1284b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (oldFront != audioPlayer->mBufferQueue.mRear) { 1294b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < audioPlayer->mBufferQueue.mState.count); 1304b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = oldFront->mBuffer; 1314b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = oldFront->mSize; 1324b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1334b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 1344b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1354b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1364b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_STOPPED: // idle 1374b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_PAUSED: // idle 1384b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1394b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1404b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten default: 1414b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(SL_BOOLEAN_FALSE); 1424b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1434b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1444b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 145928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kastenbroadcast: 1468c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (doBroadcast) { 1474b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_cond_broadcast(&audioPlayer->mObject); 1488c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 1494b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1504b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_unlock_exclusive(&audioPlayer->mObject); 1514b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1524b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1534b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1544b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten return trackHasData; 1554b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1564b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten} 1574b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 158343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 159928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief This is the track mixer: fill the specified 16-bit stereo PCM buffer */ 160343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 161e5d006b298ce7683d66f7ec86136403cf5fb20d6Glenn Kastenvoid IOutputMixExt_FillBuffer(SLOutputMixExtItf self, void *pBuffer, SLuint32 size) 162b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten{ 163ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten SL_ENTER_INTERFACE_VOID 164ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 165b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // Force to be a multiple of a frame, assumes stereo 16-bit PCM 166b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten size &= ~3; 167b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten SLboolean mixBufferHasData = SL_BOOLEAN_FALSE; 168f51dba65751107c930759938775b75531ec1f330Glenn Kasten IOutputMixExt *this = (IOutputMixExt *) self; 169f51dba65751107c930759938775b75531ec1f330Glenn Kasten IObject *thisObject = this->mThis; 170f51dba65751107c930759938775b75531ec1f330Glenn Kasten // This lock should never block, except when the application destroys the output mix object 171f51dba65751107c930759938775b75531ec1f330Glenn Kasten object_lock_exclusive(thisObject); 172f51dba65751107c930759938775b75531ec1f330Glenn Kasten unsigned activeMask; 173f51dba65751107c930759938775b75531ec1f330Glenn Kasten // If the output mix is marked for destruction, then acknowledge the request 174f51dba65751107c930759938775b75531ec1f330Glenn Kasten if (this->mDestroyRequested) { 175f51dba65751107c930759938775b75531ec1f330Glenn Kasten IEngine *thisEngine = thisObject->mEngine; 176f51dba65751107c930759938775b75531ec1f330Glenn Kasten interface_lock_exclusive(thisEngine); 177f51dba65751107c930759938775b75531ec1f330Glenn Kasten assert(&thisEngine->mOutputMix->mObject == thisObject); 178f51dba65751107c930759938775b75531ec1f330Glenn Kasten thisEngine->mOutputMix = NULL; 179f51dba65751107c930759938775b75531ec1f330Glenn Kasten // Note we don't attempt to connect another output mix, even if there is one 180f51dba65751107c930759938775b75531ec1f330Glenn Kasten interface_unlock_exclusive(thisEngine); 181f51dba65751107c930759938775b75531ec1f330Glenn Kasten // Acknowledge the destroy request, and notify the pre-destroy hook 182f51dba65751107c930759938775b75531ec1f330Glenn Kasten this->mDestroyRequested = SL_BOOLEAN_FALSE; 183f51dba65751107c930759938775b75531ec1f330Glenn Kasten object_cond_broadcast(thisObject); 184f51dba65751107c930759938775b75531ec1f330Glenn Kasten activeMask = 0; 185f51dba65751107c930759938775b75531ec1f330Glenn Kasten } else { 186f51dba65751107c930759938775b75531ec1f330Glenn Kasten activeMask = this->mActiveMask; 187f51dba65751107c930759938775b75531ec1f330Glenn Kasten } 188d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten while (activeMask) { 189d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned i = ctz(activeMask); 190d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(MAX_TRACK > i); 191d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten activeMask &= ~(1 << i); 192369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = &this->mTracks[i]; 1934b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 194b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // track is allocated 1954b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1968c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (!track_check(track)) { 197b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten continue; 1988c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 1994b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 200b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // track is playing 201b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten void *dstWriter = pBuffer; 202b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned desired = size; 203b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten SLboolean trackContributedToMix = SL_BOOLEAN_FALSE; 204e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gains[STEREO_CHANNELS]; 205e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten Summary summaries[STEREO_CHANNELS]; 206e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten unsigned channel; 207e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten for (channel = 0; channel < STEREO_CHANNELS; ++channel) { 208e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gain = track->mGains[channel]; 209e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten gains[channel] = gain; 210e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten Summary summary; 2118c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (gain <= 0.001) { 212e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_MUTE; 2138c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } else if (gain >= 0.999) { 214e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_UNITY; 2158c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } else { 216e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_OTHER; 2178c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 218e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summaries[channel] = summary; 2196a357b8fa57b0bc1557cd5ab9f9fb86aabaaa18cGlenn Kasten } 220b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten while (desired > 0) { 221b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned actual = desired; 2228c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (track->mAvail < actual) { 223b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten actual = track->mAvail; 2248c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 225b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // force actual to be a frame multiple 226b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (actual > 0) { 227b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten assert(NULL != track->mReader); 228276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten stereo *mixBuffer = (stereo *) dstWriter; 229276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten const stereo *source = (const stereo *) track->mReader; 230276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten unsigned j; 231e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_MUTE != summaries[0] || GAIN_MUTE != summaries[1]) { 23240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten if (mixBufferHasData) { 23340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // apply gain during add 234e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_UNITY != summaries[0] || GAIN_UNITY != summaries[1]) { 23540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 236e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->left += (short) (source->left * track->mGains[0]); 237e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->right += (short) (source->right * track->mGains[1]); 23840d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 23940d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // no gain adjustment needed, so do a simple add 24040d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 24140d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 24240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten mixBuffer->left += source->left; 24340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten mixBuffer->right += source->right; 24440d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 24540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 24640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 24740d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // apply gain during copy 248e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_UNITY != summaries[0] || GAIN_UNITY != summaries[1]) { 24940d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 250e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->left = (short) (source->left * track->mGains[0]); 251e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->right = (short) (source->right * track->mGains[1]); 25240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 25340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // no gain adjustment needed, so do a simple copy 25440d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 25540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten memcpy(dstWriter, track->mReader, actual); 25640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 257276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten } 258b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten trackContributedToMix = SL_BOOLEAN_TRUE; 259b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 260b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten dstWriter = (char *) dstWriter + actual; 261b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten desired -= actual; 262b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten track->mReader = (char *) track->mReader + actual; 263b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten track->mAvail -= actual; 264b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (track->mAvail == 0) { 2654b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten IBufferQueue *bufferQueue = &track->mAudioPlayer->mBufferQueue; 2664b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten interface_lock_exclusive(bufferQueue); 2674b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten const BufferHeader *oldFront, *newFront, *rear; 2684b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = bufferQueue->mFront; 2694b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten rear = bufferQueue->mRear; 2704b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // a buffer stays on queue while playing, so it better still be there 2714b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(oldFront != rear); 2724b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten newFront = oldFront; 2738c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (++newFront == &bufferQueue->mArray[bufferQueue->mNumBuffers + 1]) { 2744b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten newFront = bufferQueue->mArray; 2758c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 2764b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten bufferQueue->mFront = (BufferHeader *) newFront; 2774b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < bufferQueue->mState.count); 2784b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten --bufferQueue->mState.count; 2794b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (newFront != rear) { 2804b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // we don't acknowledge application requests between buffers 2814b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // within the same mixer frame 282b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten assert(0 < bufferQueue->mState.count); 2834b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = newFront->mBuffer; 2844b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = newFront->mSize; 2854b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 2864b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // else we would set play state to playable but not playing during next mixer 2874b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // frame if the queue is still empty at that time 2884b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten ++bufferQueue->mState.playIndex; 2894b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten slBufferQueueCallback callback = bufferQueue->mCallback; 2904b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten void *context = bufferQueue->mContext; 2914b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten interface_unlock_exclusive(bufferQueue); 2924b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // The callback function is called on each buffer completion 2934b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (NULL != callback) { 2944b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten (*callback)((SLBufferQueueItf) bufferQueue, context); 2954b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // Maybe it enqueued another buffer, or maybe it didn't. 2964b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // We will find out later during the next mixer frame. 297b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 298b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 2998c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten // no lock, but safe because noone else updates this field 3008c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten track->mFramesMixed += actual >> 2; // sizeof(short) * STEREO_CHANNELS 301b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten continue; 302b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 3034b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // we need more data: desired > 0 but actual == 0 3048c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (track_check(track)) { 3054b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten continue; 3068c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 3074b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // underflow: clear out rest of partial buffer (NTH synthesize comfort noise) 3088c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (!mixBufferHasData && trackContributedToMix) { 309b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten memset(dstWriter, 0, actual); 3108c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 311b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten break; 312b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 3138c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (trackContributedToMix) { 314b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten mixBufferHasData = SL_BOOLEAN_TRUE; 3158c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 316b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 317f51dba65751107c930759938775b75531ec1f330Glenn Kasten object_unlock_exclusive(thisObject); 318b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // No active tracks, so output silence 3198c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (!mixBufferHasData) { 320b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten memset(pBuffer, 0, size); 3218c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 322ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 323ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten SL_LEAVE_INTERFACE_VOID 324b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten} 325b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 326ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 327b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kastenstatic const struct SLOutputMixExtItf_ IOutputMixExt_Itf = { 328b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten IOutputMixExt_FillBuffer 329b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten}; 330b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 331b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kastenvoid IOutputMixExt_init(void *self) 332b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten{ 333b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten IOutputMixExt *this = (IOutputMixExt *) self; 334b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten this->mItf = &IOutputMixExt_Itf; 335928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mActiveMask = 0; 336928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten Track *track = &this->mTracks[0]; 337928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned i; 338928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten for (i = 0; i < MAX_TRACK; ++i, ++track) { 339928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mAudioPlayer = NULL; 340928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten } 341f51dba65751107c930759938775b75531ec1f330Glenn Kasten this->mDestroyRequested = SL_BOOLEAN_FALSE; 342343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten} 343343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 344343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 345343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called by Engine::CreateAudioPlayer to allocate a track */ 346343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 347acd88797a1d3b8225bab888d29036e245f275be5Glenn KastenSLresult IOutputMixExt_checkAudioPlayerSourceSink(CAudioPlayer *this) 348daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten{ 349e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten this->mTrack = NULL; 350acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten const SLDataSink *pAudioSnk = &this->mDataSink.u.mSink; 351369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = NULL; 352daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten switch (*(SLuint32 *)pAudioSnk->pLocator) { 353daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten case SL_DATALOCATOR_OUTPUTMIX: 354daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten { 355daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten // pAudioSnk->pFormat is ignored 356928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten IOutputMixExt *omExt = &((COutputMix *) ((SLDataLocator_OutputMix *) 357928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten pAudioSnk->pLocator)->outputMix)->mOutputMixExt; 358daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten // allocate an entry within OutputMix for this track 359928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten interface_lock_exclusive(omExt); 360928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned availMask = ~omExt->mActiveMask; 361d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten if (!availMask) { 362928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten interface_unlock_exclusive(omExt); 363d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // All track slots full in output mix 364daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_MEMORY_FAILURE; 365daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 366d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned i = ctz(availMask); 367d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(MAX_TRACK > i); 368928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten omExt->mActiveMask |= 1 << i; 369928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track = &omExt->mTracks[i]; 370276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten track->mAudioPlayer = NULL; // only field that is accessed before full initialization 371928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten interface_unlock_exclusive(omExt); 372e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten this->mTrack = track; 373928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mGains[0] = 1.0f; 374928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mGains[1] = 1.0f; 375928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mDestroyRequested = SL_BOOLEAN_FALSE; 376daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 377daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten break; 378daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten default: 379daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_CONTENT_UNSUPPORTED; 380daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 381daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten 382d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // FIXME Wrong place for this initialization; should first pre-allocate a track slot 383d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // using OutputMixExt.mTrackCount, then initialize full audio player, then do track bit 384d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // allocation, initialize rest of track, and doubly-link track to player (currently single). 385d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(NULL != track); 386acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mBufferQueue = &this->mBufferQueue; 387276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten track->mAudioPlayer = this; 388acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mReader = NULL; 389acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mAvail = 0; 390e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[0] = 1.0f; 391e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[1] = 1.0f; 3928c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten track->mFramesMixed = 0; 393daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_SUCCESS; 394daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten} 395daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten 396343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 397343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called when a gain-related field (mute, solo, volume, stereo position, etc.) updated */ 398343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 399e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kastenvoid audioPlayerGainUpdate(CAudioPlayer *audioPlayer) 400e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten{ 401e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLboolean mute = audioPlayer->mVolume.mMute; 402b91e32605ecf39e34ad39936b1ee193bb4e30225Glenn Kasten SLuint8 muteMask = audioPlayer->mMuteMask; 403b91e32605ecf39e34ad39936b1ee193bb4e30225Glenn Kasten SLuint8 soloMask = audioPlayer->mSoloMask; 404e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLmillibel level = audioPlayer->mVolume.mLevel; 405e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLboolean enableStereoPosition = audioPlayer->mVolume.mEnableStereoPosition; 406e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLpermille stereoPosition = audioPlayer->mVolume.mStereoPosition; 407e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 4088c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (soloMask) { 409e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten muteMask |= ~soloMask; 4108c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 411e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (mute || !(~muteMask & 3)) { 412928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mGains[0] = 0.0f; 413928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mGains[1] = 0.0f; 414e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } else { 41518abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten float playerGain = powf(10.0f, level / 2000.0f); 416e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten unsigned channel; 417e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten for (channel = 0; channel < STEREO_CHANNELS; ++channel) { 418e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gain; 4198c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (muteMask & (1 << channel)) { 42018abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain = 0.0f; 4218c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } else { 422e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten gain = playerGain; 423e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (enableStereoPosition) { 424e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten switch (channel) { 425e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten case 0: 4268c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (stereoPosition > 0) { 42718abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain *= (1000 - stereoPosition) / 1000.0f; 4288c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 429e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 430e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten case 1: 4318c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (stereoPosition < 0) { 43218abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain *= (1000 + stereoPosition) / 1000.0f; 4338c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 434e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 435e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten default: 436e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten assert(SL_BOOLEAN_FALSE); 437e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 438e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 439e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 440e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 441928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mGains[channel] = gain; 442e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 443e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 444e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten} 445e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 446343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 447b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten#endif // USE_OUTPUTMIXEXT 448