IOutputMixExt.cpp revision 928ea4ffff40c82987cfb1ac9e3095fdc6968709
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 78928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten COutputMix *outputMix = audioPlayer->mOutputMix; 79928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert(NULL != outputMix); 80928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned i = track - outputMix->mOutputMixExt.mTracks; 81928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert( /* 0 <= i && */ i < MAX_TRACK); 82928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned mask = 1 << i; 83928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mAudioPlayer = NULL; 84928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert(outputMix->mOutputMixExt.mActiveMask & mask); 85928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten outputMix->mOutputMixExt.mActiveMask &= ~mask; 86928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mTrack = NULL; 87928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mDestroyRequested = SL_BOOLEAN_FALSE; 88928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 89928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten goto broadcast; 90928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten } 91928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten 924b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten switch (audioPlayer->mPlay.mState) { 934b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 944b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_PLAYING: // continue playing current track data 954b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (0 < track->mAvail) { 964b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten trackHasData = SL_BOOLEAN_TRUE; 974b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 984b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 994b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1004b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // try to get another buffer from queue 1014b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = audioPlayer->mBufferQueue.mFront; 1024b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (oldFront != audioPlayer->mBufferQueue.mRear) { 1034b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < audioPlayer->mBufferQueue.mState.count); 1044b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = oldFront->mBuffer; 1054b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = oldFront->mSize; 1064b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // note that the buffer stays on the queue while we are reading 1074b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mState = SL_PLAYSTATE_PLAYING; 1084b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten trackHasData = SL_BOOLEAN_TRUE; 1094b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } else { 1104b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // no buffers on queue, so playable but not playing 1114b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // NTH should be able to call a desperation callback when completely starved, 1124b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // or call less often than every buffer based on high/low water-marks 1134b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 114928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten 115928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten // copy gains from audio player to track 116928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mGains[0] = audioPlayer->mGains[0]; 117928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mGains[1] = audioPlayer->mGains[1]; 1184b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1194b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1204b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_STOPPING: // application thread(s) called Play::SetPlayState(STOPPED) 1214b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mPosition = (SLmillisecond) 0; 1228c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mFramesSinceLastSeek = 0; 1238c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mFramesSincePositionUpdate = 0; 1248c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mPlay.mLastSeekPosition = 0; 1254b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mState = SL_PLAYSTATE_STOPPED; 1268c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten // stop cancels a pending seek 1278c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten audioPlayer->mSeek.mPos = SL_TIME_UNKNOWN; 1284b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = audioPlayer->mBufferQueue.mFront; 1294b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (oldFront != audioPlayer->mBufferQueue.mRear) { 1304b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < audioPlayer->mBufferQueue.mState.count); 1314b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = oldFront->mBuffer; 1324b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = oldFront->mSize; 1334b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1344b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 1354b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1364b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1374b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_STOPPED: // idle 1384b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_PAUSED: // idle 1394b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1404b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1414b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten default: 1424b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(SL_BOOLEAN_FALSE); 1434b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1444b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1454b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 146928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kastenbroadcast: 1478c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (doBroadcast) { 1484b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_cond_broadcast(&audioPlayer->mObject); 1498c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 1504b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1514b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_unlock_exclusive(&audioPlayer->mObject); 1524b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1534b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1544b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1554b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten return trackHasData; 1564b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1574b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten} 1584b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 159343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 160928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief This is the track mixer: fill the specified 16-bit stereo PCM buffer */ 161343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 162e5d006b298ce7683d66f7ec86136403cf5fb20d6Glenn Kastenvoid IOutputMixExt_FillBuffer(SLOutputMixExtItf self, void *pBuffer, SLuint32 size) 163b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten{ 164ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten SL_ENTER_INTERFACE_VOID 165ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 166b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // Force to be a multiple of a frame, assumes stereo 16-bit PCM 167b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten size &= ~3; 168928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten IOutputMixExt *this = (IOutputMixExt *) self; 169b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned activeMask = this->mActiveMask; 170b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten SLboolean mixBufferHasData = SL_BOOLEAN_FALSE; 171d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten while (activeMask) { 172d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned i = ctz(activeMask); 173d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(MAX_TRACK > i); 174d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten activeMask &= ~(1 << i); 175369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = &this->mTracks[i]; 1764b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 177b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // track is allocated 1784b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1798c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (!track_check(track)) { 180b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten continue; 1818c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 1824b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 183b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // track is playing 184b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten void *dstWriter = pBuffer; 185b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned desired = size; 186b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten SLboolean trackContributedToMix = SL_BOOLEAN_FALSE; 187e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gains[STEREO_CHANNELS]; 188e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten Summary summaries[STEREO_CHANNELS]; 189e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten unsigned channel; 190e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten for (channel = 0; channel < STEREO_CHANNELS; ++channel) { 191e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gain = track->mGains[channel]; 192e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten gains[channel] = gain; 193e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten Summary summary; 1948c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (gain <= 0.001) { 195e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_MUTE; 1968c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } else if (gain >= 0.999) { 197e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_UNITY; 1988c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } else { 199e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_OTHER; 2008c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 201e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summaries[channel] = summary; 2026a357b8fa57b0bc1557cd5ab9f9fb86aabaaa18cGlenn Kasten } 203b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten while (desired > 0) { 204b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned actual = desired; 2058c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (track->mAvail < actual) { 206b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten actual = track->mAvail; 2078c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 208b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // force actual to be a frame multiple 209b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (actual > 0) { 210b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten assert(NULL != track->mReader); 211276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten stereo *mixBuffer = (stereo *) dstWriter; 212276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten const stereo *source = (const stereo *) track->mReader; 213276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten unsigned j; 214e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_MUTE != summaries[0] || GAIN_MUTE != summaries[1]) { 21540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten if (mixBufferHasData) { 21640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // apply gain during add 217e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_UNITY != summaries[0] || GAIN_UNITY != summaries[1]) { 21840d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 219e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->left += (short) (source->left * track->mGains[0]); 220e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->right += (short) (source->right * track->mGains[1]); 22140d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 22240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // no gain adjustment needed, so do a simple add 22340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 22440d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 22540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten mixBuffer->left += source->left; 22640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten mixBuffer->right += source->right; 22740d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 22840d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 22940d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 23040d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // apply gain during copy 231e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_UNITY != summaries[0] || GAIN_UNITY != summaries[1]) { 23240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 233e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->left = (short) (source->left * track->mGains[0]); 234e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->right = (short) (source->right * track->mGains[1]); 23540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 23640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // no gain adjustment needed, so do a simple copy 23740d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 23840d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten memcpy(dstWriter, track->mReader, actual); 23940d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 240276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten } 241b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten trackContributedToMix = SL_BOOLEAN_TRUE; 242b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 243b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten dstWriter = (char *) dstWriter + actual; 244b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten desired -= actual; 245b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten track->mReader = (char *) track->mReader + actual; 246b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten track->mAvail -= actual; 247b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (track->mAvail == 0) { 2484b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten IBufferQueue *bufferQueue = &track->mAudioPlayer->mBufferQueue; 2494b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten interface_lock_exclusive(bufferQueue); 2504b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten const BufferHeader *oldFront, *newFront, *rear; 2514b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = bufferQueue->mFront; 2524b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten rear = bufferQueue->mRear; 2534b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // a buffer stays on queue while playing, so it better still be there 2544b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(oldFront != rear); 2554b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten newFront = oldFront; 2568c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (++newFront == &bufferQueue->mArray[bufferQueue->mNumBuffers + 1]) { 2574b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten newFront = bufferQueue->mArray; 2588c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 2594b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten bufferQueue->mFront = (BufferHeader *) newFront; 2604b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < bufferQueue->mState.count); 2614b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten --bufferQueue->mState.count; 2624b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (newFront != rear) { 2634b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // we don't acknowledge application requests between buffers 2644b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // within the same mixer frame 265b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten assert(0 < bufferQueue->mState.count); 2664b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = newFront->mBuffer; 2674b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = newFront->mSize; 2684b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 2694b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // else we would set play state to playable but not playing during next mixer 2704b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // frame if the queue is still empty at that time 2714b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten ++bufferQueue->mState.playIndex; 2724b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten slBufferQueueCallback callback = bufferQueue->mCallback; 2734b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten void *context = bufferQueue->mContext; 2744b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten interface_unlock_exclusive(bufferQueue); 2754b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // The callback function is called on each buffer completion 2764b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (NULL != callback) { 2774b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten (*callback)((SLBufferQueueItf) bufferQueue, context); 2784b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // Maybe it enqueued another buffer, or maybe it didn't. 2794b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // We will find out later during the next mixer frame. 280b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 281b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 2828c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten // no lock, but safe because noone else updates this field 2838c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten track->mFramesMixed += actual >> 2; // sizeof(short) * STEREO_CHANNELS 284b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten continue; 285b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 2864b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // we need more data: desired > 0 but actual == 0 2878c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (track_check(track)) { 2884b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten continue; 2898c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 2904b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // underflow: clear out rest of partial buffer (NTH synthesize comfort noise) 2918c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (!mixBufferHasData && trackContributedToMix) { 292b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten memset(dstWriter, 0, actual); 2938c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 294b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten break; 295b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 2968c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (trackContributedToMix) { 297b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten mixBufferHasData = SL_BOOLEAN_TRUE; 2988c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 299b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 300b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // No active tracks, so output silence 3018c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (!mixBufferHasData) { 302b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten memset(pBuffer, 0, size); 3038c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 304ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 305ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten SL_LEAVE_INTERFACE_VOID 306b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten} 307b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 308ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 309b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kastenstatic const struct SLOutputMixExtItf_ IOutputMixExt_Itf = { 310b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten IOutputMixExt_FillBuffer 311b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten}; 312b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 313b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kastenvoid IOutputMixExt_init(void *self) 314b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten{ 315b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten IOutputMixExt *this = (IOutputMixExt *) self; 316b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten this->mItf = &IOutputMixExt_Itf; 317928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mActiveMask = 0; 318928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten Track *track = &this->mTracks[0]; 319928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned i; 320928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten for (i = 0; i < MAX_TRACK; ++i, ++track) { 321928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track->mAudioPlayer = NULL; 322928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten } 323b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten} 324b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 325343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 326343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called by Object::Destroy for an AudioPlayer to release the associated track */ 327343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 328343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kastenvoid IOutputMixExt_Destroy(CAudioPlayer *this) 329343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten{ 330928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten#if 0 331343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten COutputMix *outputMix = this->mOutputMix; 332343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten if (NULL != outputMix) { 333343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten Track *track = this->mTrack; 334343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert(NULL != track); 335343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert(track->mAudioPlayer == this); 336928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned i = track - outputMix->mOutputMixExt.mTracks; 337343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert( /* 0 <= i && */ i < MAX_TRACK); 338343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten unsigned mask = 1 << i; 339343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten // FIXME deadlock possible here due to undocumented lock ordering 340343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten object_lock_exclusive(&outputMix->mObject); 341343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten // FIXME how can we be sure the mixer is not reading from this track right now? 342343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten track->mAudioPlayer = NULL; 343928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten assert(outputMix->mOutputMixExt.mActiveMask & mask); 344928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten outputMix->mOutputMixExt.mActiveMask &= ~mask; 345343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten object_unlock_exclusive(&outputMix->mObject); 346343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten this->mTrack = NULL; 347343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten } 348928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten#endif 349343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten} 350343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 351343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 352343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called by Engine::CreateAudioPlayer to allocate a track */ 353343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 354acd88797a1d3b8225bab888d29036e245f275be5Glenn KastenSLresult IOutputMixExt_checkAudioPlayerSourceSink(CAudioPlayer *this) 355daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten{ 356e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten this->mTrack = NULL; 357acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten const SLDataSink *pAudioSnk = &this->mDataSink.u.mSink; 358369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = NULL; 359daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten switch (*(SLuint32 *)pAudioSnk->pLocator) { 360daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten case SL_DATALOCATOR_OUTPUTMIX: 361daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten { 362daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten // pAudioSnk->pFormat is ignored 363928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten IOutputMixExt *omExt = &((COutputMix *) ((SLDataLocator_OutputMix *) 364928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten pAudioSnk->pLocator)->outputMix)->mOutputMixExt; 365daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten // allocate an entry within OutputMix for this track 366928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten interface_lock_exclusive(omExt); 367928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten unsigned availMask = ~omExt->mActiveMask; 368d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten if (!availMask) { 369928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten interface_unlock_exclusive(omExt); 370d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // All track slots full in output mix 371daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_MEMORY_FAILURE; 372daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 373d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned i = ctz(availMask); 374d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(MAX_TRACK > i); 375928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten omExt->mActiveMask |= 1 << i; 376928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten track = &omExt->mTracks[i]; 377276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten track->mAudioPlayer = NULL; // only field that is accessed before full initialization 378928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten interface_unlock_exclusive(omExt); 379e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten this->mTrack = track; 380928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mGains[0] = 1.0f; 381928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mGains[1] = 1.0f; 382928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten this->mDestroyRequested = SL_BOOLEAN_FALSE; 383daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 384daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten break; 385daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten default: 386daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_CONTENT_UNSUPPORTED; 387daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 388daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten 389d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // FIXME Wrong place for this initialization; should first pre-allocate a track slot 390d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // using OutputMixExt.mTrackCount, then initialize full audio player, then do track bit 391d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // allocation, initialize rest of track, and doubly-link track to player (currently single). 392d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(NULL != track); 393acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mBufferQueue = &this->mBufferQueue; 394276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten track->mAudioPlayer = this; 395acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mReader = NULL; 396acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mAvail = 0; 397e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[0] = 1.0f; 398e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[1] = 1.0f; 3998c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten track->mFramesMixed = 0; 400daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_SUCCESS; 401daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten} 402daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten 403343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 404343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called when a gain-related field (mute, solo, volume, stereo position, etc.) updated */ 405343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 406e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kastenvoid audioPlayerGainUpdate(CAudioPlayer *audioPlayer) 407e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten{ 408e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLboolean mute = audioPlayer->mVolume.mMute; 409b91e32605ecf39e34ad39936b1ee193bb4e30225Glenn Kasten SLuint8 muteMask = audioPlayer->mMuteMask; 410b91e32605ecf39e34ad39936b1ee193bb4e30225Glenn Kasten SLuint8 soloMask = audioPlayer->mSoloMask; 411e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLmillibel level = audioPlayer->mVolume.mLevel; 412e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLboolean enableStereoPosition = audioPlayer->mVolume.mEnableStereoPosition; 413e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLpermille stereoPosition = audioPlayer->mVolume.mStereoPosition; 414e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 4158c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (soloMask) { 416e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten muteMask |= ~soloMask; 4178c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 418e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (mute || !(~muteMask & 3)) { 419928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mGains[0] = 0.0f; 420928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mGains[1] = 0.0f; 421e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } else { 42218abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten float playerGain = powf(10.0f, level / 2000.0f); 423e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten unsigned channel; 424e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten for (channel = 0; channel < STEREO_CHANNELS; ++channel) { 425e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gain; 4268c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (muteMask & (1 << channel)) { 42718abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain = 0.0f; 4288c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } else { 429e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten gain = playerGain; 430e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (enableStereoPosition) { 431e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten switch (channel) { 432e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten case 0: 4338c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (stereoPosition > 0) { 43418abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain *= (1000 - stereoPosition) / 1000.0f; 4358c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 436e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 437e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten case 1: 4388c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten if (stereoPosition < 0) { 43918abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain *= (1000 + stereoPosition) / 1000.0f; 4408c065779232fdd89abace68d2fc7bea786a010d7Glenn Kasten } 441e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 442e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten default: 443e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten assert(SL_BOOLEAN_FALSE); 444e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 445e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 446e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 447e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 448928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten audioPlayer->mGains[channel] = gain; 449e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 450e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 451e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten} 452e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 453343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 454b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten#endif // USE_OUTPUTMIXEXT 455