AudioSource.cpp revision ab334fd351ae5a0e18903da123d63e565b536874
1e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber/* 2e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * Copyright (C) 2010 The Android Open Source Project 3e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * 4e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * you may not use this file except in compliance with the License. 6e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * You may obtain a copy of the License at 7e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * 8e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * 10e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * Unless required by applicable law or agreed to in writing, software 11e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * See the License for the specific language governing permissions and 14e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber * limitations under the License. 15e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber */ 16e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 17050b28a593350047845a45a14cc5026221ac1620James Dong//#define LOG_NDEBUG 0 18050b28a593350047845a45a14cc5026221ac1620James Dong#define LOG_TAG "AudioSource" 19050b28a593350047845a45a14cc5026221ac1620James Dong#include <utils/Log.h> 20050b28a593350047845a45a14cc5026221ac1620James Dong 21e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber#include <media/AudioRecord.h> 226b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong#include <media/stagefright/AudioSource.h> 236b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong#include <media/stagefright/MediaBuffer.h> 24e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber#include <media/stagefright/MediaDefs.h> 25e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber#include <media/stagefright/MetaData.h> 266b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong#include <media/stagefright/foundation/ADebug.h> 27365a963142093a1cd8efdcea76b5f65096a5b115James Dong#include <cutils/properties.h> 2846292fb347d72a314d985e34e5e3743d846cb9b6James Dong#include <stdlib.h> 29e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 30e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Hubernamespace android { 31e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 326b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongstatic void AudioRecordCallbackFunction(int event, void *user, void *info) { 336b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong AudioSource *source = (AudioSource *) user; 346b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong switch (event) { 356b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong case AudioRecord::EVENT_MORE_DATA: { 366b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong source->dataCallbackTimestamp(*((AudioRecord::Buffer *) info), systemTime() / 1000); 376b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong break; 386b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 396b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong case AudioRecord::EVENT_OVERRUN: { 405ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("AudioRecord reported overrun!"); 416b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong break; 426b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 436b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong default: 446b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // does nothing 456b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong break; 466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 476b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 486b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 49e7c9cb48fec02697227bd847cd2e69432659adfdAndreas HuberAudioSource::AudioSource( 50ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten audio_source_t inputSource, uint32_t sampleRate, uint32_t channelCount) 51be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong : mStarted(false), 526b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mSampleRate(sampleRate), 5346292fb347d72a314d985e34e5e3743d846cb9b6James Dong mPrevSampleTimeUs(0), 546b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mNumFramesReceived(0), 556b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mNumClientOwnedBuffers(0) { 56be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong 57ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten ALOGV("sampleRate: %d, channelCount: %d", sampleRate, channelCount); 58ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten CHECK(channelCount == 1 || channelCount == 2); 59679ab0b0792846a89162ce41c953819d70030112Glenn Kasten AudioRecord::record_flags flags = (AudioRecord::record_flags) 60679ab0b0792846a89162ce41c953819d70030112Glenn Kasten (AudioRecord::RECORD_AGC_ENABLE | 61be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong AudioRecord::RECORD_NS_ENABLE | 62679ab0b0792846a89162ce41c953819d70030112Glenn Kasten AudioRecord::RECORD_IIR_ENABLE); 63be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong mRecord = new AudioRecord( 64fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin inputSource, sampleRate, AUDIO_FORMAT_PCM_16_BIT, 65ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten audio_channel_in_mask_from_count(channelCount), 66be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong 4 * kMaxBufferSize / sizeof(int16_t), /* Enable ping-pong buffers */ 676b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong flags, 686b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong AudioRecordCallbackFunction, 696b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong this); 70be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong 71be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong mInitCheck = mRecord->initCheck(); 72e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 73e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 74e7c9cb48fec02697227bd847cd2e69432659adfdAndreas HuberAudioSource::~AudioSource() { 75e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (mStarted) { 76b44c9d2bdc0d5b9cb03254022a58e017b516e9e6James Dong reset(); 77e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 78e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 79e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber delete mRecord; 80e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber mRecord = NULL; 81e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 82e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 83e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huberstatus_t AudioSource::initCheck() const { 84e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return mInitCheck; 85e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 86e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 87e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huberstatus_t AudioSource::start(MetaData *params) { 886b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 89e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (mStarted) { 90e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return UNKNOWN_ERROR; 91e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 92e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 936e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 946e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return NO_INIT; 956e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 966e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 97d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mTrackMaxAmplitude = false; 98d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mMaxAmplitude = 0; 99d707fcb3e29707ca4a5935c294ef0b38eb5aba5fJames Dong mInitialReadTimeUs = 0; 100f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong mStartTimeUs = 0; 101f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong int64_t startTimeUs; 102f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong if (params && params->findInt64(kKeyTime, &startTimeUs)) { 103f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong mStartTimeUs = startTimeUs; 104f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong } 105e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber status_t err = mRecord->start(); 106e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (err == OK) { 107e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber mStarted = true; 108eaae38445a340c4857c1c5569475879a728e63b7James Dong } else { 109eaae38445a340c4857c1c5569475879a728e63b7James Dong delete mRecord; 110eaae38445a340c4857c1c5569475879a728e63b7James Dong mRecord = NULL; 111e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 112e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 113eaae38445a340c4857c1c5569475879a728e63b7James Dong 114e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return err; 115e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 116e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 1176b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongvoid AudioSource::releaseQueuedFrames_l() { 1183856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("releaseQueuedFrames_l"); 1196b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong List<MediaBuffer *>::iterator it; 1206b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong while (!mBuffersReceived.empty()) { 1216b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong it = mBuffersReceived.begin(); 1226b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (*it)->release(); 1236b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mBuffersReceived.erase(it); 1246b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 1256b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 1266b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 1276b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongvoid AudioSource::waitOutstandingEncodingFrames_l() { 1283856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("waitOutstandingEncodingFrames_l: %lld", mNumClientOwnedBuffers); 1296b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong while (mNumClientOwnedBuffers > 0) { 1306b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameEncodingCompletionCondition.wait(mLock); 1316b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 1326b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 1336b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 134b44c9d2bdc0d5b9cb03254022a58e017b516e9e6James Dongstatus_t AudioSource::reset() { 1356b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 136e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (!mStarted) { 137e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return UNKNOWN_ERROR; 138e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 139e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 1406e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 1416e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return NO_INIT; 1426e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 1436e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 144e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber mStarted = false; 1456b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mRecord->stop(); 1466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong waitOutstandingEncodingFrames_l(); 1476b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong releaseQueuedFrames_l(); 148365a963142093a1cd8efdcea76b5f65096a5b115James Dong 149e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return OK; 150e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 151e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 152e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Hubersp<MetaData> AudioSource::getFormat() { 1536b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 1546e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 1556e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return 0; 1566e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 1576e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 158e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber sp<MetaData> meta = new MetaData; 159e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_RAW); 1606b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong meta->setInt32(kKeySampleRate, mSampleRate); 161e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber meta->setInt32(kKeyChannelCount, mRecord->channelCount()); 162e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber meta->setInt32(kKeyMaxInputSize, kMaxBufferSize); 163e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 164e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return meta; 165e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 166e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 167f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dongvoid AudioSource::rampVolume( 168f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int32_t startFrame, int32_t rampDurationFrames, 169f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong uint8_t *data, size_t bytes) { 170f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 171f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong const int32_t kShift = 14; 172f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int32_t fixedMultiplier = (startFrame << kShift) / rampDurationFrames; 173f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong const int32_t nChannels = mRecord->channelCount(); 174f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int32_t stopFrame = startFrame + bytes / sizeof(int16_t); 175f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int16_t *frame = (int16_t *) data; 176f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong if (stopFrame > rampDurationFrames) { 177f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong stopFrame = rampDurationFrames; 178f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 179f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 180f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong while (startFrame < stopFrame) { 181f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong if (nChannels == 1) { // mono 182f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame[0] = (frame[0] * fixedMultiplier) >> kShift; 183f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong ++frame; 184f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong ++startFrame; 185f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } else { // stereo 186f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame[0] = (frame[0] * fixedMultiplier) >> kShift; 187f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame[1] = (frame[1] * fixedMultiplier) >> kShift; 188f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame += 2; 189f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong startFrame += 2; 190f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 191f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 192f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong // Update the multiplier every 4 frames 193f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong if ((startFrame & 3) == 0) { 194f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong fixedMultiplier = (startFrame << kShift) / rampDurationFrames; 195f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 196f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 197f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong} 198f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 199e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huberstatus_t AudioSource::read( 200e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber MediaBuffer **out, const ReadOptions *options) { 2016b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 2026b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong *out = NULL; 2036e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 2046e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 2056e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return NO_INIT; 2066e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 2076e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 2086b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong while (mStarted && mBuffersReceived.empty()) { 2096b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameAvailableCondition.wait(mLock); 2106b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 2116b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (!mStarted) { 2126b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return OK; 2136b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 2146b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong MediaBuffer *buffer = *mBuffersReceived.begin(); 2156b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mBuffersReceived.erase(mBuffersReceived.begin()); 2166b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong ++mNumClientOwnedBuffers; 2176b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->setObserver(this); 2186b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->add_ref(); 2196b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 2206b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Mute/suppress the recording sound 2216b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int64_t timeUs; 2226b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong CHECK(buffer->meta_data()->findInt64(kKeyTime, &timeUs)); 2236b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int64_t elapsedTimeUs = timeUs - mStartTimeUs; 2246b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (elapsedTimeUs < kAutoRampStartUs) { 2256b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong memset((uint8_t *) buffer->data(), 0, buffer->range_length()); 2266b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } else if (elapsedTimeUs < kAutoRampStartUs + kAutoRampDurationUs) { 2276b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int32_t autoRampDurationFrames = 2286b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (kAutoRampDurationUs * mSampleRate + 500000LL) / 1000000LL; 2296b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 2306b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int32_t autoRampStartFrames = 2316b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (kAutoRampStartUs * mSampleRate + 500000LL) / 1000000LL; 2326b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 2336b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int32_t nFrames = mNumFramesReceived - autoRampStartFrames; 2346b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong rampVolume(nFrames, autoRampDurationFrames, 2356b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (uint8_t *) buffer->data(), buffer->range_length()); 2366b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 237542db5d438988360d491a5add1040a2df9aa90c9James Dong 2386b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Track the max recording signal amplitude. 2396b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mTrackMaxAmplitude) { 2406b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong trackMaxAmplitude( 2416b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (int16_t *) buffer->data(), buffer->range_length() >> 1); 2426b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 243542db5d438988360d491a5add1040a2df9aa90c9James Dong 2446b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong *out = buffer; 2456b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return OK; 2466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 247542db5d438988360d491a5add1040a2df9aa90c9James Dong 2486b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongvoid AudioSource::signalBufferReturned(MediaBuffer *buffer) { 2493856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("signalBufferReturned: %p", buffer->data()); 2506b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 2516b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong --mNumClientOwnedBuffers; 2526b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->setObserver(0); 2536b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->release(); 2546b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameEncodingCompletionCondition.signal(); 2556b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return; 2566b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 25746292fb347d72a314d985e34e5e3743d846cb9b6James Dong 2586b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongstatus_t AudioSource::dataCallbackTimestamp( 2596b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong const AudioRecord::Buffer& audioBuffer, int64_t timeUs) { 2603856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("dataCallbackTimestamp: %lld us", timeUs); 2616b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 2626b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (!mStarted) { 2635ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("Spurious callback from AudioRecord. Drop the audio data."); 2646b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return OK; 2656b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 26646292fb347d72a314d985e34e5e3743d846cb9b6James Dong 267a472613aec322e25891abf5c77bf3f7e3c244920James Dong // Drop retrieved and previously lost audio data. 268a472613aec322e25891abf5c77bf3f7e3c244920James Dong if (mNumFramesReceived == 0 && timeUs < mStartTimeUs) { 269a472613aec322e25891abf5c77bf3f7e3c244920James Dong mRecord->getInputFramesLost(); 2703856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("Drop audio data at %lld/%lld us", timeUs, mStartTimeUs); 271a472613aec322e25891abf5c77bf3f7e3c244920James Dong return OK; 272a472613aec322e25891abf5c77bf3f7e3c244920James Dong } 273a472613aec322e25891abf5c77bf3f7e3c244920James Dong 2746b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mNumFramesReceived == 0 && mPrevSampleTimeUs == 0) { 2756b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mInitialReadTimeUs = timeUs; 2766b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Initial delay 2776b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mStartTimeUs > 0) { 2786b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mStartTimeUs = timeUs - mStartTimeUs; 2796b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } else { 2806b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Assume latency is constant. 2816b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mStartTimeUs += mRecord->latency() * 1000; 282f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong } 2836b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mPrevSampleTimeUs = mStartTimeUs; 2846b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 285e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 286a472613aec322e25891abf5c77bf3f7e3c244920James Dong size_t numLostBytes = 0; 287a472613aec322e25891abf5c77bf3f7e3c244920James Dong if (mNumFramesReceived > 0) { // Ignore earlier frame lost 288a472613aec322e25891abf5c77bf3f7e3c244920James Dong // getInputFramesLost() returns the number of lost frames. 289a472613aec322e25891abf5c77bf3f7e3c244920James Dong // Convert number of frames lost to number of bytes lost. 290a472613aec322e25891abf5c77bf3f7e3c244920James Dong numLostBytes = mRecord->getInputFramesLost() * mRecord->frameSize(); 291a472613aec322e25891abf5c77bf3f7e3c244920James Dong } 292a472613aec322e25891abf5c77bf3f7e3c244920James Dong 2936b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong CHECK_EQ(numLostBytes & 1, 0u); 2946b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong CHECK_EQ(audioBuffer.size & 1, 0u); 2956b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (numLostBytes > 0) { 296b575ddce78d266fa218006f90306158dda5c8f56James Dong // Loss of audio frames should happen rarely; thus the LOGW should 297b575ddce78d266fa218006f90306158dda5c8f56James Dong // not cause a logging spam 298b575ddce78d266fa218006f90306158dda5c8f56James Dong ALOGW("Lost audio record data: %d bytes", numLostBytes); 299b575ddce78d266fa218006f90306158dda5c8f56James Dong } 300b575ddce78d266fa218006f90306158dda5c8f56James Dong 301b575ddce78d266fa218006f90306158dda5c8f56James Dong while (numLostBytes > 0) { 302b575ddce78d266fa218006f90306158dda5c8f56James Dong size_t bufferSize = numLostBytes; 303b575ddce78d266fa218006f90306158dda5c8f56James Dong if (numLostBytes > kMaxBufferSize) { 304b575ddce78d266fa218006f90306158dda5c8f56James Dong numLostBytes -= kMaxBufferSize; 305b575ddce78d266fa218006f90306158dda5c8f56James Dong bufferSize = kMaxBufferSize; 306b575ddce78d266fa218006f90306158dda5c8f56James Dong } else { 307b575ddce78d266fa218006f90306158dda5c8f56James Dong numLostBytes = 0; 308d707fcb3e29707ca4a5935c294ef0b38eb5aba5fJames Dong } 309b575ddce78d266fa218006f90306158dda5c8f56James Dong MediaBuffer *lostAudioBuffer = new MediaBuffer(bufferSize); 310b575ddce78d266fa218006f90306158dda5c8f56James Dong memset(lostAudioBuffer->data(), 0, bufferSize); 311b575ddce78d266fa218006f90306158dda5c8f56James Dong lostAudioBuffer->set_range(0, bufferSize); 312b575ddce78d266fa218006f90306158dda5c8f56James Dong queueInputBuffer_l(lostAudioBuffer, timeUs); 313b575ddce78d266fa218006f90306158dda5c8f56James Dong } 314b575ddce78d266fa218006f90306158dda5c8f56James Dong 315b575ddce78d266fa218006f90306158dda5c8f56James Dong if (audioBuffer.size == 0) { 316b575ddce78d266fa218006f90306158dda5c8f56James Dong ALOGW("Nothing is available from AudioRecord callback buffer"); 317b575ddce78d266fa218006f90306158dda5c8f56James Dong return OK; 3186b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 3193c3763d2ee1cd1fba7fe522fbaf0faca315d8c2aJames Dong 320b575ddce78d266fa218006f90306158dda5c8f56James Dong const size_t bufferSize = audioBuffer.size; 321b575ddce78d266fa218006f90306158dda5c8f56James Dong MediaBuffer *buffer = new MediaBuffer(bufferSize); 322b575ddce78d266fa218006f90306158dda5c8f56James Dong memcpy((uint8_t *) buffer->data(), 323b575ddce78d266fa218006f90306158dda5c8f56James Dong audioBuffer.i16, audioBuffer.size); 3246b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->set_range(0, bufferSize); 325b575ddce78d266fa218006f90306158dda5c8f56James Dong queueInputBuffer_l(buffer, timeUs); 326b575ddce78d266fa218006f90306158dda5c8f56James Dong return OK; 327b575ddce78d266fa218006f90306158dda5c8f56James Dong} 328b575ddce78d266fa218006f90306158dda5c8f56James Dong 329b575ddce78d266fa218006f90306158dda5c8f56James Dongvoid AudioSource::queueInputBuffer_l(MediaBuffer *buffer, int64_t timeUs) { 330b575ddce78d266fa218006f90306158dda5c8f56James Dong const size_t bufferSize = buffer->range_length(); 331b575ddce78d266fa218006f90306158dda5c8f56James Dong const size_t frameSize = mRecord->frameSize(); 332b575ddce78d266fa218006f90306158dda5c8f56James Dong const int64_t timestampUs = 333b575ddce78d266fa218006f90306158dda5c8f56James Dong mPrevSampleTimeUs + 334b575ddce78d266fa218006f90306158dda5c8f56James Dong ((1000000LL * (bufferSize / frameSize)) + 335b575ddce78d266fa218006f90306158dda5c8f56James Dong (mSampleRate >> 1)) / mSampleRate; 336e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 3376b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mNumFramesReceived == 0) { 3386b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->meta_data()->setInt64(kKeyAnchorTime, mStartTimeUs); 339542db5d438988360d491a5add1040a2df9aa90c9James Dong } 340b575ddce78d266fa218006f90306158dda5c8f56James Dong 3416b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->meta_data()->setInt64(kKeyTime, mPrevSampleTimeUs); 3426b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->meta_data()->setInt64(kKeyDriftTime, timeUs - mInitialReadTimeUs); 3436b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mPrevSampleTimeUs = timestampUs; 344b575ddce78d266fa218006f90306158dda5c8f56James Dong mNumFramesReceived += bufferSize / frameSize; 3456b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mBuffersReceived.push_back(buffer); 3466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameAvailableCondition.signal(); 347e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 348e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 349d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dongvoid AudioSource::trackMaxAmplitude(int16_t *data, int nSamples) { 350d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong for (int i = nSamples; i > 0; --i) { 351d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong int16_t value = *data++; 352d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong if (value < 0) { 353d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong value = -value; 354d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 355d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong if (mMaxAmplitude < value) { 356d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mMaxAmplitude = value; 357d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 358d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 359d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong} 360d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong 361d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dongint16_t AudioSource::getMaxAmplitude() { 362d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong // First call activates the tracking. 363d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong if (!mTrackMaxAmplitude) { 364d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mTrackMaxAmplitude = true; 365d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 366d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong int16_t value = mMaxAmplitude; 367d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mMaxAmplitude = 0; 3683856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("max amplitude since last call: %d", value); 369d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong return value; 370d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong} 371d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong 372e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} // namespace android 373