AudioTrackShared.h revision 82aaf94a5b18939e4d790bbc752031f3070704a3
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (C) 2007 The Android Open Source Project 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Licensed under the Apache License, Version 2.0 (the "License"); 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * you may not use this file except in compliance with the License. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * You may obtain a copy of the License at 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * http://www.apache.org/licenses/LICENSE-2.0 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Unless required by applicable law or agreed to in writing, software 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * distributed under the License is distributed on an "AS IS" BASIS, 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * See the License for the specific language governing permissions and 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * limitations under the License. 15a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) */ 1690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 1790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#ifndef ANDROID_AUDIO_TRACK_SHARED_H 1890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#define ANDROID_AUDIO_TRACK_SHARED_H 1990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdint.h> 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/types.h> 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <utils/threads.h> 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <utils/Log.h> 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <utils/RefBase.h> 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <media/nbaio/roundup.h> 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <media/SingleStateQueue.h> 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <private/media/StaticAudioTrackState.h> 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace android { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// for audio_track_cblk_t::mFlags 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_UNDERRUN 0x01 // set by server immediately on output underrun, cleared by client 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_FORCEREADY 0x02 // set: track is considered ready immediately by AudioFlinger, 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // clear: track is ready when buffer full 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_INVALID 0x04 // track buffer invalidated by AudioFlinger, need to re-create 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_DISABLED 0x08 // output track disabled by AudioFlinger due to underrun, 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // need to re-start. Unlike CBLK_UNDERRUN, this is not set 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // immediately, but only after a long string of underruns. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 0x10 unused 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_LOOP_CYCLE 0x20 // set by server each time a loop cycle other than final one completes 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_LOOP_FINAL 0x40 // set by server when the final loop cycle completes 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_BUFFER_END 0x80 // set by server when the position reaches end of buffer if not looping 46a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#define CBLK_OVERRUN 0x100 // set by server immediately on input overrun, cleared by client 47a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#define CBLK_INTERRUPT 0x200 // set by client on interrupt(), cleared by client in obtainBuffer() 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_STREAM_END_DONE 0x400 // set by server on render completion, cleared by client 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//EL_FIXME 20 seconds may not be enough and must be reconciled with new obtainBuffer implementation 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MAX_RUN_OFFLOADED_TIMEOUT_MS 20000 //assuming upto a maximum of 20 seconds of offloaded 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct AudioTrackSharedStreaming { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // similar to NBAIO MonoPipe 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in continuously incrementing frame units, take modulo buffer size, which must be a power of 2 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) volatile int32_t mFront; // read by server 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) volatile int32_t mRear; // write by client 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) volatile int32_t mFlush; // incremented by client to indicate a request to flush; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // server notices and discards all data between mFront and mRear 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) volatile uint32_t mUnderrunFrames; // server increments for each unavailable but desired frame 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef SingleStateQueue<StaticAudioTrackState> StaticAudioTrackSingleStateQueue; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct AudioTrackSharedStatic { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StaticAudioTrackSingleStateQueue::Shared 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mSingleStateQueue; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mBufferPosition; // updated asynchronously by server, 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // "for entertainment purposes only" 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Important: do not add any virtual methods, including ~ 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct audio_track_cblk_t 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Since the control block is always located in shared memory, this constructor 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is only used for placement new(). It is never used for regular new() or stack. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) audio_track_cblk_t(); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /*virtual*/ ~audio_track_cblk_t() { } 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class Proxy; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class ClientProxy; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class AudioTrackClientProxy; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class AudioRecordClientProxy; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class ServerProxy; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class AudioTrackServerProxy; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class AudioRecordServerProxy; 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The data members are grouped so that members accessed frequently and in the same context 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // are in the same line of data cache. 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t mServer; // Number of filled frames consumed by server (mIsOut), 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or filled frames provided by server (!mIsOut). 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It is updated asynchronously by server without a barrier. 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The value should be used "for entertainment purposes only", 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which means don't make important decisions based on it. 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t frameCount_; // used during creation to pass actual track buffer size 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // from AudioFlinger to client, and not referenced again 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FIXME remove here and replace by createTrack() in/out 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // parameter 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // renamed to "_" to detect incorrect use 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) volatile int32_t mFutex; // event flag: down (P) by client, 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // up (V) by server or binderDied() or interrupt() 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CBLK_FUTEX_WAKE 1 // if event flag bit is set, then a deferred wake is pending 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mMinimum; // server wakes up client if available >= mMinimum 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Channel volumes are fixed point U4.12, so 0x1000 means 1.0. 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Left channel is in [0:15], right channel is in [16:31]. 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Always read and write the combined pair atomically. 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For AudioTrack only, not used by AudioRecord. 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t mVolumeLR; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t mSampleRate; // AudioTrack only: client's requested sample rate in Hz 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or 0 == default. Write-only client, read-only server. 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // client write-only, server read-only 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t mSendLevel; // Fixed point U4.12 so 0x1000 means 1.0 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t mPad2; // unused 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) volatile int32_t mFlags; // combinations of CBLK_* 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Cache line boundary (32 bytes) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) union { 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioTrackSharedStreaming mStreaming; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioTrackSharedStatic mStatic; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mAlign[8]; 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } u; 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Cache line boundary (32 bytes) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Proxy for shared memory control block, to isolate callers from needing to know the details. 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// There is exactly one ClientProxy and one ServerProxy per shared memory control block. 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The proxies are located in normal memory, and are not multi-thread safe within a given side. 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Proxy : public RefBase { 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Proxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, size_t frameSize, bool isOut, 151a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) bool clientInServer); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~Proxy() { } 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct Buffer { 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mFrameCount; // number of frames available in this buffer 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void* mRaw; // pointer to first frame 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mNonContig; // number of additional non-contiguous frames available 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // These refer to shared memory, and are virtual addresses with respect to the current process. 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // They may have different virtual addresses within the other process. 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) audio_track_cblk_t* const mCblk; // the control block 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void* const mBuffers; // starting address of buffers 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const size_t mFrameCount; // not necessarily a power of 2 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const size_t mFrameSize; // in bytes 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const size_t mFrameCountP2; // mFrameCount rounded to power of 2, streaming mode 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const bool mIsOut; // true for AudioTrack, false for AudioRecord 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const bool mClientInServer; // true for OutputTrack, false for AudioTrack & AudioRecord 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool mIsShutdown; // latch set to true when shared memory corruption detected 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mUnreleased; // unreleased frames remaining from most recent obtainBuffer 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// ---------------------------------------------------------------------------- 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Proxy seen by AudioTrack client and AudioRecord client 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ClientProxy : public Proxy { 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, size_t frameSize, 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isOut, bool clientInServer); 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~ClientProxy() { } 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 1865d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) static const struct timespec kForever; 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const struct timespec kNonBlocking; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Obtain a buffer with filled frames (reading) or empty frames (writing). 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It is permitted to call obtainBuffer() multiple times in succession, without any intervening 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // calls to releaseBuffer(). In that case, the final obtainBuffer() is the one that effectively 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sets or extends the unreleased frame count. 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On entry: 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mFrameCount should be initialized to maximum number of desired frames, 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which must be > 0. 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mNonContig is unused. 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is unused. 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // requested is the requested timeout in local monotonic delta time units: 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NULL or &kNonBlocking means non-blocking (zero timeout). 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // &kForever means block forever (infinite timeout). 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Other values mean a specific timeout in local monotonic delta time units. 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // elapsed is a pointer to a location that will hold the total local monotonic time that 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // elapsed while blocked, or NULL if not needed. 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On exit: 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mFrameCount has the actual number of contiguous available frames, 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which is always 0 when the return status != NO_ERROR. 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mNonContig is the number of additional non-contiguous available frames. 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is a pointer to the first available frame, 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or NULL when buffer->mFrameCount == 0. 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The return status is one of: 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NO_ERROR Success, buffer->mFrameCount > 0. 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // WOULD_BLOCK Non-blocking mode and no frames are available. 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TIMED_OUT Timeout occurred before any frames became available. 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This can happen even for infinite timeout, due to a spurious wakeup. 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // In this case, the caller should investigate and then re-try as appropriate. 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // DEAD_OBJECT Server has died or invalidated, caller should destroy this proxy and re-create. 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // -EINTR Call has been interrupted. Look around to see why, and then perhaps try again. 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NO_INIT Shared memory is corrupt. 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Assertion failure on entry, if buffer == NULL or buffer->mFrameCount == 0. 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) status_t obtainBuffer(Buffer* buffer, const struct timespec *requested = NULL, 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct timespec *elapsed = NULL); 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Release (some of) the frames last obtained. 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On entry, buffer->mFrameCount should have the number of frames to release, 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which must (cumulatively) be <= the number of frames last obtained but not yet released. 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is ignored, but is normally same pointer returned by last obtainBuffer(). 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It is permitted to call releaseBuffer() multiple times to release the frames in chunks. 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On exit: 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mFrameCount is zero. 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is NULL. 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void releaseBuffer(Buffer* buffer); 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Call after detecting server's death 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void binderDied(); 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Call to force an obtainBuffer() to return quickly with -EINTR 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void interrupt(); 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t getPosition() { 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return mEpoch + mCblk->mServer; 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setEpoch(size_t epoch) { 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mEpoch = epoch; 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setMinimum(size_t minimum) { 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mCblk->mMinimum = minimum; 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Return the number of frames that would need to be obtained and released 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in order for the client to be aligned at start of buffer 2535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual size_t getMisalignment(); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t getEpoch() const { 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return mEpoch; 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mEpoch; 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Proxy used by AudioTrack client, which also includes AudioFlinger::PlaybackThread::OutputTrack 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class AudioTrackClientProxy : public ClientProxy { 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioTrackClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t frameSize, bool clientInServer = false) 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : ClientProxy(cblk, buffers, frameCount, frameSize, true /*isOut*/, 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) clientInServer) { } 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~AudioTrackClientProxy() { } 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No barriers on the following operations, so the ordering of loads/stores 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // with respect to other parameters is UNPREDICTABLE. That's considered safe. 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // caller must limit to 0.0 <= sendLevel <= 1.0 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setSendLevel(float sendLevel) { 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mCblk->mSendLevel = uint16_t(sendLevel * 0x1000); 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // caller must limit to 0 <= volumeLR <= 0x10001000 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setVolumeLR(uint32_t volumeLR) { 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mCblk->mVolumeLR = volumeLR; 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setSampleRate(uint32_t sampleRate) { 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mCblk->mSampleRate = sampleRate; 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void flush(); 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual uint32_t getUnderrunFrames() const { 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return mCblk->u.mStreaming.mUnderrunFrames; 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool clearStreamEndDone(); // and return previous value 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool getStreamEndDone() const; 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) status_t waitStreamEndDone(const struct timespec *requested); 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class StaticAudioTrackClientProxy : public AudioTrackClientProxy { 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StaticAudioTrackClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t frameSize); 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~StaticAudioTrackClientProxy() { } 3095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void flush(); 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MIN_LOOP 16 // minimum length of each loop iteration in frames 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLoop(size_t loopStart, size_t loopEnd, int loopCount); 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t getBufferPosition(); 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual size_t getMisalignment() { 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual uint32_t getUnderrunFrames() const { 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StaticAudioTrackSingleStateQueue::Mutator mMutator; 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mBufferPosition; // so that getBufferPosition() appears to be synchronous 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Proxy used by AudioRecord client 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class AudioRecordClientProxy : public ClientProxy { 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioRecordClientProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t frameSize) 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : ClientProxy(cblk, buffers, frameCount, frameSize, 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) false /*isOut*/, false /*clientInServer*/) { } 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~AudioRecordClientProxy() { } 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Proxy used by AudioFlinger server 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ServerProxy : public Proxy { 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, size_t frameSize, 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isOut, bool clientInServer); 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~ServerProxy() { } 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Obtain a buffer with filled frames (writing) or empty frames (reading). 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It is permitted to call obtainBuffer() multiple times in succession, without any intervening 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // calls to releaseBuffer(). In that case, the final obtainBuffer() is the one that effectively 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sets or extends the unreleased frame count. 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Always non-blocking. 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On entry: 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mFrameCount should be initialized to maximum number of desired frames, 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which must be > 0. 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mNonContig is unused. 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is unused. 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On exit: 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mFrameCount has the actual number of contiguous available frames, 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which is always 0 when the return status != NO_ERROR. 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mNonContig is the number of additional non-contiguous available frames. 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is a pointer to the first available frame, 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or NULL when buffer->mFrameCount == 0. 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The return status is one of: 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NO_ERROR Success, buffer->mFrameCount > 0. 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // WOULD_BLOCK No frames are available. 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NO_INIT Shared memory is corrupt. 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual status_t obtainBuffer(Buffer* buffer); 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Release (some of) the frames last obtained. 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On entry, buffer->mFrameCount should have the number of frames to release, 3755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // which must (cumulatively) be <= the number of frames last obtained but not yet released. 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It is permitted to call releaseBuffer() multiple times to release the frames in chunks. 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is ignored, but is normally same pointer returned by last obtainBuffer(). 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On exit: 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mFrameCount is zero. 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffer->mRaw is NULL. 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void releaseBuffer(Buffer* buffer); 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mAvailToClient; // estimated frames available to client prior to releaseBuffer() 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t mFlush; // our copy of cblk->u.mStreaming.mFlush, for streaming output only 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool mDeferWake; // whether another releaseBuffer() is expected soon 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Proxy used by AudioFlinger for servicing AudioTrack 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class AudioTrackServerProxy : public ServerProxy { 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioTrackServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t frameSize, bool clientInServer = false) 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : ServerProxy(cblk, buffers, frameCount, frameSize, true /*isOut*/, clientInServer) { } 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~AudioTrackServerProxy() { } 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // return value of these methods must be validated by the caller 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t getSampleRate() const { return mCblk->mSampleRate; } 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t getSendLevel_U4_12() const { return mCblk->mSendLevel; } 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t getVolumeLR() const { return mCblk->mVolumeLR; } 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // estimated total number of filled frames available to server to read, 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which may include non-contiguous frames 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual size_t framesReady(); 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Currently AudioFlinger will call framesReady() for a fast track from two threads: 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FastMixer thread, and normal mixer thread. This is dangerous, as the proxy is intended 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to be called from at most one thread of server, and one thread of client. 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // As a temporary workaround, this method informs the proxy implementation that it 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // should avoid doing a state queue poll from within framesReady(). 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FIXME Change AudioFlinger to not call framesReady() from normal mixer thread. 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void framesReadyIsCalledByMultipleThreads() { } 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool setStreamEndDone(); // and return previous value 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Add to the tally of underrun frames, and inform client of underrun 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void tallyUnderrunFrames(uint32_t frameCount); 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Return the total number of frames which AudioFlinger desired but were unavailable, 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and thus which resulted in an underrun. 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual uint32_t getUnderrunFrames() const { return mCblk->u.mStreaming.mUnderrunFrames; } 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4274e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)class StaticAudioTrackServerProxy : public AudioTrackServerProxy { 4284e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)public: 4294e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) StaticAudioTrackServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 4304e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) size_t frameSize); 4315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)protected: 4324e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) virtual ~StaticAudioTrackServerProxy() { } 4334e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 4344e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)public: 4352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual size_t framesReady(); 4362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void framesReadyIsCalledByMultipleThreads(); 4372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual status_t obtainBuffer(Buffer* buffer); 4382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void releaseBuffer(Buffer* buffer); 4395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void tallyUnderrunFrames(uint32_t frameCount); 4402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual uint32_t getUnderrunFrames() const { return 0; } 4412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)private: 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ssize_t pollPosition(); // poll for state queue update, and return current position 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StaticAudioTrackSingleStateQueue::Observer mObserver; 4452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t mPosition; // server's current play position in frames, relative to 0 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t mEnd; // cached value computed from mState, safe for asynchronous read 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool mFramesReadyIsCalledByMultipleThreads; 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StaticAudioTrackState mState; 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 450 451// Proxy used by AudioFlinger for servicing AudioRecord 452class AudioRecordServerProxy : public ServerProxy { 453public: 454 AudioRecordServerProxy(audio_track_cblk_t* cblk, void *buffers, size_t frameCount, 455 size_t frameSize) 456 : ServerProxy(cblk, buffers, frameCount, frameSize, false /*isOut*/, 457 false /*clientInServer*/) { } 458protected: 459 virtual ~AudioRecordServerProxy() { } 460}; 461 462// ---------------------------------------------------------------------------- 463 464}; // namespace android 465 466#endif // ANDROID_AUDIO_TRACK_SHARED_H 467