IOutputMixExt.cpp revision e5d006b298ce7683d66f7ec86136403cf5fb20d6
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 24b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten// Used by SDL but 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{ 394b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten SLboolean trackHasData = SL_BOOLEAN_FALSE; 404b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 414b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten CAudioPlayer *audioPlayer = track->mAudioPlayer; 424b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (NULL != audioPlayer) { 434b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 444b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // track is initialized 454b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 464b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_lock_exclusive(&audioPlayer->mObject); 474b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 484b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten SLboolean doBroadcast = SL_BOOLEAN_FALSE; 494b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten const BufferHeader *oldFront; 504b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 514b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (audioPlayer->mBufferQueue.mClearRequested) { 524b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // application thread(s) that call BufferQueue::Clear while mixer is active 534b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // is active will block synchronously until mixer acknowledges the Clear request 544b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mFront = &audioPlayer->mBufferQueue.mArray[0]; 554b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mRear = &audioPlayer->mBufferQueue.mArray[0]; 564b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mState.count = 0; 574b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mBufferQueue.mClearRequested = SL_BOOLEAN_FALSE; 584b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = NULL; 594b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = 0; 604b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 614b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 624b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 634b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten switch (audioPlayer->mPlay.mState) { 644b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 654b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_PLAYING: // continue playing current track data 664b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (0 < track->mAvail) { 674b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten trackHasData = SL_BOOLEAN_TRUE; 684b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 694b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 704b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 714b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // try to get another buffer from queue 724b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = audioPlayer->mBufferQueue.mFront; 734b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (oldFront != audioPlayer->mBufferQueue.mRear) { 744b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < audioPlayer->mBufferQueue.mState.count); 754b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = oldFront->mBuffer; 764b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = oldFront->mSize; 774b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // note that the buffer stays on the queue while we are reading 784b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mState = SL_PLAYSTATE_PLAYING; 794b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten trackHasData = SL_BOOLEAN_TRUE; 804b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } else { 814b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // no buffers on queue, so playable but not playing 824b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // NTH should be able to call a desperation callback when completely starved, 834b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // or call less often than every buffer based on high/low water-marks 844b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 854b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 864b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 874b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_STOPPING: // application thread(s) called Play::SetPlayState(STOPPED) 884b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mPosition = (SLmillisecond) 0; 894b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten audioPlayer->mPlay.mState = SL_PLAYSTATE_STOPPED; 904b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = audioPlayer->mBufferQueue.mFront; 914b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (oldFront != audioPlayer->mBufferQueue.mRear) { 924b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < audioPlayer->mBufferQueue.mState.count); 934b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = oldFront->mBuffer; 944b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = oldFront->mSize; 954b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 964b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten doBroadcast = SL_BOOLEAN_TRUE; 974b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 984b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 994b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_STOPPED: // idle 1004b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten case SL_PLAYSTATE_PAUSED: // idle 1014b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1024b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1034b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten default: 1044b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(SL_BOOLEAN_FALSE); 1054b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten break; 1064b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1074b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1084b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (doBroadcast) 1094b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_cond_broadcast(&audioPlayer->mObject); 1104b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1114b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten object_unlock_exclusive(&audioPlayer->mObject); 1124b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1134b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 1144b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1154b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten return trackHasData; 1164b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1174b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten} 1184b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 119343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 120343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief This is the mixer for SDL: fill the specified 16-bit stereo PCM buffer */ 121343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 122e5d006b298ce7683d66f7ec86136403cf5fb20d6Glenn Kastenvoid IOutputMixExt_FillBuffer(SLOutputMixExtItf self, void *pBuffer, SLuint32 size) 123b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten{ 124ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten SL_ENTER_INTERFACE_VOID 125ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 126b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // Force to be a multiple of a frame, assumes stereo 16-bit PCM 127b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten size &= ~3; 128daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten IOutputMixExt *thisExt = (IOutputMixExt *) self; 129d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten IOutputMix *this = &((COutputMix *) InterfaceToIObject(thisExt))->mOutputMix; 130b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned activeMask = this->mActiveMask; 131b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten SLboolean mixBufferHasData = SL_BOOLEAN_FALSE; 132d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten while (activeMask) { 133d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned i = ctz(activeMask); 134d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(MAX_TRACK > i); 135d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten activeMask &= ~(1 << i); 136369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = &this->mTracks[i]; 1374b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 138b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // track is allocated 1394b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1404b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (!track_check(track)) 141b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten continue; 1424b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 143b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // track is playing 144b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten void *dstWriter = pBuffer; 145b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned desired = size; 146b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten SLboolean trackContributedToMix = SL_BOOLEAN_FALSE; 147e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gains[STEREO_CHANNELS]; 148e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten Summary summaries[STEREO_CHANNELS]; 149e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten unsigned channel; 150e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten for (channel = 0; channel < STEREO_CHANNELS; ++channel) { 151e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gain = track->mGains[channel]; 152e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten gains[channel] = gain; 153e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten Summary summary; 154e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (gain <= 0.001) 155e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_MUTE; 156e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten else if (gain >= 0.999) 157e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_UNITY; 158e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten else 159e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summary = GAIN_OTHER; 160e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten summaries[channel] = summary; 1616a357b8fa57b0bc1557cd5ab9f9fb86aabaaa18cGlenn Kasten } 162b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten while (desired > 0) { 163b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten unsigned actual = desired; 164b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (track->mAvail < actual) 165b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten actual = track->mAvail; 166b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // force actual to be a frame multiple 167b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (actual > 0) { 168b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten assert(NULL != track->mReader); 169276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten stereo *mixBuffer = (stereo *) dstWriter; 170276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten const stereo *source = (const stereo *) track->mReader; 171276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten unsigned j; 172e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_MUTE != summaries[0] || GAIN_MUTE != summaries[1]) { 17340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten if (mixBufferHasData) { 17440d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // apply gain during add 175e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_UNITY != summaries[0] || GAIN_UNITY != summaries[1]) { 17640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 177e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->left += (short) (source->left * track->mGains[0]); 178e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->right += (short) (source->right * track->mGains[1]); 17940d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 18040d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // no gain adjustment needed, so do a simple add 18140d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 18240d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 18340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten mixBuffer->left += source->left; 18440d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten mixBuffer->right += source->right; 18540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 18640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 18740d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 18840d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // apply gain during copy 189e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (GAIN_UNITY != summaries[0] || GAIN_UNITY != summaries[1]) { 19040d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten for (j = 0; j < actual; j += sizeof(stereo), ++mixBuffer, ++source) { 191e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->left = (short) (source->left * track->mGains[0]); 192e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten mixBuffer->right = (short) (source->right * track->mGains[1]); 19340d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 19440d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten // no gain adjustment needed, so do a simple copy 19540d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } else { 19640d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten memcpy(dstWriter, track->mReader, actual); 19740d1c40832a448e23d0bb37512aee53222575c2eGlenn Kasten } 198276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten } 199b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten trackContributedToMix = SL_BOOLEAN_TRUE; 200b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 201b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten dstWriter = (char *) dstWriter + actual; 202b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten desired -= actual; 203b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten track->mReader = (char *) track->mReader + actual; 204b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten track->mAvail -= actual; 205b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (track->mAvail == 0) { 2064b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten IBufferQueue *bufferQueue = &track->mAudioPlayer->mBufferQueue; 2074b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten interface_lock_exclusive(bufferQueue); 2084b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten const BufferHeader *oldFront, *newFront, *rear; 2094b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten oldFront = bufferQueue->mFront; 2104b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten rear = bufferQueue->mRear; 2114b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // a buffer stays on queue while playing, so it better still be there 2124b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(oldFront != rear); 2134b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten newFront = oldFront; 2144b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (++newFront == &bufferQueue->mArray[bufferQueue->mNumBuffers + 1]) 2154b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten newFront = bufferQueue->mArray; 2164b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten bufferQueue->mFront = (BufferHeader *) newFront; 2174b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten assert(0 < bufferQueue->mState.count); 2184b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten --bufferQueue->mState.count; 2194b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (newFront != rear) { 2204b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // we don't acknowledge application requests between buffers 2214b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // within the same mixer frame 222b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten assert(0 < bufferQueue->mState.count); 2234b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mReader = newFront->mBuffer; 2244b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAvail = newFront->mSize; 2254b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten } 2264b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // else we would set play state to playable but not playing during next mixer 2274b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // frame if the queue is still empty at that time 2284b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten ++bufferQueue->mState.playIndex; 2294b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten slBufferQueueCallback callback = bufferQueue->mCallback; 2304b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten void *context = bufferQueue->mContext; 2314b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten interface_unlock_exclusive(bufferQueue); 2324b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // The callback function is called on each buffer completion 2334b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (NULL != callback) { 2344b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten (*callback)((SLBufferQueueItf) bufferQueue, context); 2354b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // Maybe it enqueued another buffer, or maybe it didn't. 2364b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // We will find out later during the next mixer frame. 237b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 238b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 239e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten // no lock, but safe b/c noone else updates this field 240e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mFrameCounter += actual >> 2; // sizeof(short) * STEREO_CHANNELS 2417a79f519d89eb0e1a5b3f4005484b16d6854d7e2Glenn Kasten // NTH Calling the callback too often, should depend on requested update period 2424b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // FIXME need a lock to get these pointers, and called too often 2434b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (track->mAudioPlayer->mPlay.mCallback) 2444b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten (*track->mAudioPlayer->mPlay.mCallback)(&track->mAudioPlayer->mPlay.mItf, 2454b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten track->mAudioPlayer->mPlay.mContext, SL_PLAYEVENT_HEADMOVING); 246b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten continue; 247b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 2484b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // we need more data: desired > 0 but actual == 0 2494b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten if (track_check(track)) 2504b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten continue; 2514b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten // underflow: clear out rest of partial buffer (NTH synthesize comfort noise) 252b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (!mixBufferHasData && trackContributedToMix) 253b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten memset(dstWriter, 0, actual); 254b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten break; 255b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 256b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (trackContributedToMix) 257b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten mixBufferHasData = SL_BOOLEAN_TRUE; 258b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten } 259b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten // No active tracks, so output silence 260b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten if (!mixBufferHasData) 261b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten memset(pBuffer, 0, size); 262ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 263ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten SL_LEAVE_INTERFACE_VOID 264b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten} 265b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 266ed46c29d6a09112dbbf584c82953f63289596fd6Glenn Kasten 267b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kastenstatic const struct SLOutputMixExtItf_ IOutputMixExt_Itf = { 268b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten IOutputMixExt_FillBuffer 269b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten}; 270b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 271b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kastenvoid IOutputMixExt_init(void *self) 272b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten{ 273b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten IOutputMixExt *this = (IOutputMixExt *) self; 274b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten this->mItf = &IOutputMixExt_Itf; 275b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten} 276b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten 277343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 278343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called by Object::Destroy for an AudioPlayer to release the associated track */ 279343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 280343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kastenvoid IOutputMixExt_Destroy(CAudioPlayer *this) 281343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten{ 282343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten COutputMix *outputMix = this->mOutputMix; 283343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten if (NULL != outputMix) { 284343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten Track *track = this->mTrack; 285343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert(NULL != track); 286343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert(track->mAudioPlayer == this); 287343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten unsigned i = track - outputMix->mOutputMix.mTracks; 288343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert( /* 0 <= i && */ i < MAX_TRACK); 289343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten unsigned mask = 1 << i; 290343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten // FIXME deadlock possible here due to undocumented lock ordering 291343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten object_lock_exclusive(&outputMix->mObject); 292343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten // FIXME how can we be sure the mixer is not reading from this track right now? 293343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten track->mAudioPlayer = NULL; 294343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten assert(outputMix->mOutputMix.mActiveMask & mask); 295343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten outputMix->mOutputMix.mActiveMask &= ~mask; 296343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten object_unlock_exclusive(&outputMix->mObject); 297343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten this->mTrack = NULL; 298343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten } 299343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten} 300343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 301343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 302343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called by Engine::CreateAudioPlayer to allocate a track */ 303343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 304acd88797a1d3b8225bab888d29036e245f275be5Glenn KastenSLresult IOutputMixExt_checkAudioPlayerSourceSink(CAudioPlayer *this) 305daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten{ 306e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten this->mTrack = NULL; 307acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten const SLDataSink *pAudioSnk = &this->mDataSink.u.mSink; 308369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = NULL; 309daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten switch (*(SLuint32 *)pAudioSnk->pLocator) { 310daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten case SL_DATALOCATOR_OUTPUTMIX: 311daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten { 312daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten // pAudioSnk->pFormat is ignored 313e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten IOutputMix *om = &((COutputMix *) ((SLDataLocator_OutputMix *) 314e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten pAudioSnk->pLocator)->outputMix)->mOutputMix; 315daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten // allocate an entry within OutputMix for this track 316d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten interface_lock_exclusive(om); 317d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned availMask = ~om->mActiveMask; 318d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten if (!availMask) { 319d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten interface_unlock_exclusive(om); 320d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // All track slots full in output mix 321daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_MEMORY_FAILURE; 322daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 323d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten unsigned i = ctz(availMask); 324d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(MAX_TRACK > i); 325d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten om->mActiveMask |= 1 << i; 326d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten track = &om->mTracks[i]; 327276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten track->mAudioPlayer = NULL; // only field that is accessed before full initialization 328d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten interface_unlock_exclusive(om); 329e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten this->mTrack = track; 330daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 331daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten break; 332daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten default: 333daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_CONTENT_UNSUPPORTED; 334daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten } 335daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten 336d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // FIXME Wrong place for this initialization; should first pre-allocate a track slot 337d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // using OutputMixExt.mTrackCount, then initialize full audio player, then do track bit 338d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten // allocation, initialize rest of track, and doubly-link track to player (currently single). 339d07ed7df4ec9338f97f12627690d58ed9b34f25bGlenn Kasten assert(NULL != track); 340acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mBufferQueue = &this->mBufferQueue; 341276cab2d983b892d1b634474b6249f6bec400c76Glenn Kasten track->mAudioPlayer = this; 342acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mReader = NULL; 343acd88797a1d3b8225bab888d29036e245f275be5Glenn Kasten track->mAvail = 0; 344e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[0] = 1.0f; 345e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[1] = 1.0f; 346e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mFrameCounter = 0; 347daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten return SL_RESULT_SUCCESS; 348daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten} 349daf661248ff6ea2e21799e5114c78b7c1d49630eGlenn Kasten 350343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 351343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten/** \brief Called when a gain-related field (mute, solo, volume, stereo position, etc.) updated */ 352343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 353e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kastenvoid audioPlayerGainUpdate(CAudioPlayer *audioPlayer) 354e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten{ 355e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten // FIXME need a lock on the track while updating gain 356369f3138f19f7102bf0f98b890ab84c8df633a93Glenn Kasten Track *track = audioPlayer->mTrack; 357e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 358e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (NULL == track) 359e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten return; 360e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 361e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLboolean mute = audioPlayer->mVolume.mMute; 362b91e32605ecf39e34ad39936b1ee193bb4e30225Glenn Kasten SLuint8 muteMask = audioPlayer->mMuteMask; 363b91e32605ecf39e34ad39936b1ee193bb4e30225Glenn Kasten SLuint8 soloMask = audioPlayer->mSoloMask; 364e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLmillibel level = audioPlayer->mVolume.mLevel; 365e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLboolean enableStereoPosition = audioPlayer->mVolume.mEnableStereoPosition; 366e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten SLpermille stereoPosition = audioPlayer->mVolume.mStereoPosition; 367e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 368e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (soloMask) 369e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten muteMask |= ~soloMask; 370e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (mute || !(~muteMask & 3)) { 37118abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten track->mGains[0] = 0.0f; 37218abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten track->mGains[1] = 0.0f; 373e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } else { 37418abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten float playerGain = powf(10.0f, level / 2000.0f); 375e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten unsigned channel; 376e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten for (channel = 0; channel < STEREO_CHANNELS; ++channel) { 377e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten float gain; 378e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (muteMask & (1 << channel)) 37918abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain = 0.0f; 380e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten else { 381e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten gain = playerGain; 382e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (enableStereoPosition) { 383e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten switch (channel) { 384e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten case 0: 385e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (stereoPosition > 0) 38618abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain *= (1000 - stereoPosition) / 1000.0f; 387e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 388e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten case 1: 389e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten if (stereoPosition < 0) 39018abcc4b70fab1f84d6fbebac3a8e34480a6c4d3Glenn Kasten gain *= (1000 + stereoPosition) / 1000.0f; 391e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 392e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten default: 393e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten assert(SL_BOOLEAN_FALSE); 394e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten break; 395e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 396e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 397e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 398e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten track->mGains[channel] = gain; 399e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 400e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 401e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten} 402e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 403343c522ebf4f9c321eef8c3b3b2945f1c1cb8846Glenn Kasten 404b7154f2324c8ae44b820c07c69aaa80a4bb9e418Glenn Kasten#endif // USE_OUTPUTMIXEXT 405