AudioSource.cpp revision b65473f4f881ee7c0a24217ceac69514f6c127d5
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> 27082830f92373a1b9e512dbbfb940187ffa1c2c6fAndreas Huber#include <media/stagefright/foundation/ALooper.h> 28365a963142093a1cd8efdcea76b5f65096a5b115James Dong#include <cutils/properties.h> 2946292fb347d72a314d985e34e5e3743d846cb9b6James Dong#include <stdlib.h> 30e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 31e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Hubernamespace android { 32e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 336b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongstatic void AudioRecordCallbackFunction(int event, void *user, void *info) { 346b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong AudioSource *source = (AudioSource *) user; 356b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong switch (event) { 366b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong case AudioRecord::EVENT_MORE_DATA: { 37082830f92373a1b9e512dbbfb940187ffa1c2c6fAndreas Huber source->dataCallback(*((AudioRecord::Buffer *) info)); 386b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong break; 396b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 406b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong case AudioRecord::EVENT_OVERRUN: { 415ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("AudioRecord reported overrun!"); 426b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong break; 436b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 446b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong default: 456b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // does nothing 466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong break; 476b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 486b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 496b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 50e7c9cb48fec02697227bd847cd2e69432659adfdAndreas HuberAudioSource::AudioSource( 51ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten audio_source_t inputSource, uint32_t sampleRate, uint32_t channelCount) 52e2ffd5b583da9d30d96710b0e8879e90b2b51d30Glenn Kasten : mStarted(false), 536b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mSampleRate(sampleRate), 5446292fb347d72a314d985e34e5e3743d846cb9b6James Dong mPrevSampleTimeUs(0), 556b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mNumFramesReceived(0), 56af5dd7753e62353411cf0daf3b513c38818e9662Andreas Huber mNumClientOwnedBuffers(0) { 57ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten ALOGV("sampleRate: %d, channelCount: %d", sampleRate, channelCount); 58ab334fd351ae5a0e18903da123d63e565b536874Glenn Kasten CHECK(channelCount == 1 || channelCount == 2); 59be6ec71af2d12e2a55f2f0b1b77d3fa5d593a1c7James Dong 60e33054eb968cbf8ccaee1b0ff0301403902deed6Glenn Kasten size_t minFrameCount; 61e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent status_t status = AudioRecord::getMinFrameCount(&minFrameCount, 62e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent sampleRate, 63e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent AUDIO_FORMAT_PCM_16_BIT, 64dd8104cc5367262f0e5f13df4e79f131e8d560bbGlenn Kasten audio_channel_in_mask_from_count(channelCount)); 65e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent if (status == OK) { 66e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent // make sure that the AudioRecord callback never returns more than the maximum 67e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent // buffer size 68e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent int frameCount = kMaxBufferSize / sizeof(int16_t) / channelCount; 69e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent 70e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent // make sure that the AudioRecord total buffer size is large enough 71e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent int bufCount = 2; 72e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent while ((bufCount * frameCount) < minFrameCount) { 73e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent bufCount++; 74e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent } 75e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent 76e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent mRecord = new AudioRecord( 77e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent inputSource, sampleRate, AUDIO_FORMAT_PCM_16_BIT, 78e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent audio_channel_in_mask_from_count(channelCount), 79e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent bufCount * frameCount, 80e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent AudioRecordCallbackFunction, 81e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent this, 82e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent frameCount); 83e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent mInitCheck = mRecord->initCheck(); 84e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent } else { 85e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent mInitCheck = status; 86e49f2b424318aa8e830e7a1338e5e32ab82992f9Eric Laurent } 87e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 88e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 89e7c9cb48fec02697227bd847cd2e69432659adfdAndreas HuberAudioSource::~AudioSource() { 90e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (mStarted) { 91b44c9d2bdc0d5b9cb03254022a58e017b516e9e6James Dong reset(); 92e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 93e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 94e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 95e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huberstatus_t AudioSource::initCheck() const { 96e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return mInitCheck; 97e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 98e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 99e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huberstatus_t AudioSource::start(MetaData *params) { 1006b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 101e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (mStarted) { 102e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return UNKNOWN_ERROR; 103e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 104e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 1056e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 1066e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return NO_INIT; 1076e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 1086e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 109d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mTrackMaxAmplitude = false; 110d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mMaxAmplitude = 0; 111d707fcb3e29707ca4a5935c294ef0b38eb5aba5fJames Dong mInitialReadTimeUs = 0; 112f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong mStartTimeUs = 0; 113f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong int64_t startTimeUs; 114f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong if (params && params->findInt64(kKeyTime, &startTimeUs)) { 115f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong mStartTimeUs = startTimeUs; 116f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong } 117e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber status_t err = mRecord->start(); 118e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (err == OK) { 119e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber mStarted = true; 120eaae38445a340c4857c1c5569475879a728e63b7James Dong } else { 121e2ffd5b583da9d30d96710b0e8879e90b2b51d30Glenn Kasten mRecord.clear(); 122e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 123e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 124eaae38445a340c4857c1c5569475879a728e63b7James Dong 125e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return err; 126e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 127e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 1286b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongvoid AudioSource::releaseQueuedFrames_l() { 1293856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("releaseQueuedFrames_l"); 1306b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong List<MediaBuffer *>::iterator it; 1316b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong while (!mBuffersReceived.empty()) { 1326b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong it = mBuffersReceived.begin(); 1336b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (*it)->release(); 1346b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mBuffersReceived.erase(it); 1356b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 1366b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 1376b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 1386b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongvoid AudioSource::waitOutstandingEncodingFrames_l() { 1393856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("waitOutstandingEncodingFrames_l: %lld", mNumClientOwnedBuffers); 1406b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong while (mNumClientOwnedBuffers > 0) { 1416b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameEncodingCompletionCondition.wait(mLock); 1426b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 1436b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 1446b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 145b44c9d2bdc0d5b9cb03254022a58e017b516e9e6James Dongstatus_t AudioSource::reset() { 1466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 147e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber if (!mStarted) { 148e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return UNKNOWN_ERROR; 149e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber } 150e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 1516e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 1526e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return NO_INIT; 1536e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 1546e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 155e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber mStarted = false; 1566b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mRecord->stop(); 1576b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong waitOutstandingEncodingFrames_l(); 1586b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong releaseQueuedFrames_l(); 159365a963142093a1cd8efdcea76b5f65096a5b115James Dong 160e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return OK; 161e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 162e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 163e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Hubersp<MetaData> AudioSource::getFormat() { 1646b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 1656e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 1666e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return 0; 1676e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 1686e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 169e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber sp<MetaData> meta = new MetaData; 170e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_RAW); 1716b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong meta->setInt32(kKeySampleRate, mSampleRate); 172e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber meta->setInt32(kKeyChannelCount, mRecord->channelCount()); 173e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber meta->setInt32(kKeyMaxInputSize, kMaxBufferSize); 174e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 175e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber return meta; 176e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 177e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 178f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dongvoid AudioSource::rampVolume( 179f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int32_t startFrame, int32_t rampDurationFrames, 180f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong uint8_t *data, size_t bytes) { 181f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 182f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong const int32_t kShift = 14; 183f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int32_t fixedMultiplier = (startFrame << kShift) / rampDurationFrames; 184f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong const int32_t nChannels = mRecord->channelCount(); 185f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int32_t stopFrame = startFrame + bytes / sizeof(int16_t); 186f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong int16_t *frame = (int16_t *) data; 187f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong if (stopFrame > rampDurationFrames) { 188f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong stopFrame = rampDurationFrames; 189f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 190f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 191f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong while (startFrame < stopFrame) { 192f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong if (nChannels == 1) { // mono 193f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame[0] = (frame[0] * fixedMultiplier) >> kShift; 194f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong ++frame; 195f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong ++startFrame; 196f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } else { // stereo 197f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame[0] = (frame[0] * fixedMultiplier) >> kShift; 198f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame[1] = (frame[1] * fixedMultiplier) >> kShift; 199f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong frame += 2; 200f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong startFrame += 2; 201f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 202f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 203f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong // Update the multiplier every 4 frames 204f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong if ((startFrame & 3) == 0) { 205f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong fixedMultiplier = (startFrame << kShift) / rampDurationFrames; 206f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 207f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong } 208f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong} 209f1ae1963f5028a670573b50a9c1cfb504fc426b4James Dong 210e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huberstatus_t AudioSource::read( 211e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber MediaBuffer **out, const ReadOptions *options) { 2126b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 2136b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong *out = NULL; 2146e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 2156e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong if (mInitCheck != OK) { 2166e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong return NO_INIT; 2176e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong } 2186e20bdf799a6f4efa6c42121a958634ea32ed5ccJames Dong 2196b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong while (mStarted && mBuffersReceived.empty()) { 2206b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameAvailableCondition.wait(mLock); 2216b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 2226b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (!mStarted) { 2236b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return OK; 2246b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 2256b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong MediaBuffer *buffer = *mBuffersReceived.begin(); 2266b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mBuffersReceived.erase(mBuffersReceived.begin()); 2276b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong ++mNumClientOwnedBuffers; 2286b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->setObserver(this); 2296b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->add_ref(); 2306b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 2316b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Mute/suppress the recording sound 2326b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int64_t timeUs; 2336b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong CHECK(buffer->meta_data()->findInt64(kKeyTime, &timeUs)); 2346b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int64_t elapsedTimeUs = timeUs - mStartTimeUs; 2356b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (elapsedTimeUs < kAutoRampStartUs) { 2366b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong memset((uint8_t *) buffer->data(), 0, buffer->range_length()); 2376b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } else if (elapsedTimeUs < kAutoRampStartUs + kAutoRampDurationUs) { 2386b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int32_t autoRampDurationFrames = 239b65473f4f881ee7c0a24217ceac69514f6c127d5Vineeta Srivastava ((int64_t)kAutoRampDurationUs * mSampleRate + 500000LL) / 1000000LL; //Need type casting 2406b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 2416b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int32_t autoRampStartFrames = 242b65473f4f881ee7c0a24217ceac69514f6c127d5Vineeta Srivastava ((int64_t)kAutoRampStartUs * mSampleRate + 500000LL) / 1000000LL; //Need type casting 2436b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong 2446b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong int32_t nFrames = mNumFramesReceived - autoRampStartFrames; 2456b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong rampVolume(nFrames, autoRampDurationFrames, 2466b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (uint8_t *) buffer->data(), buffer->range_length()); 2476b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 248542db5d438988360d491a5add1040a2df9aa90c9James Dong 2496b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Track the max recording signal amplitude. 2506b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mTrackMaxAmplitude) { 2516b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong trackMaxAmplitude( 2526b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong (int16_t *) buffer->data(), buffer->range_length() >> 1); 2536b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 254542db5d438988360d491a5add1040a2df9aa90c9James Dong 2556b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong *out = buffer; 2566b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return OK; 2576b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 258542db5d438988360d491a5add1040a2df9aa90c9James Dong 2596b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dongvoid AudioSource::signalBufferReturned(MediaBuffer *buffer) { 2603856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("signalBufferReturned: %p", buffer->data()); 2616b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 2626b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong --mNumClientOwnedBuffers; 2636b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->setObserver(0); 2646b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->release(); 2656b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameEncodingCompletionCondition.signal(); 2666b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return; 2676b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong} 26846292fb347d72a314d985e34e5e3743d846cb9b6James Dong 269082830f92373a1b9e512dbbfb940187ffa1c2c6fAndreas Huberstatus_t AudioSource::dataCallback(const AudioRecord::Buffer& audioBuffer) { 270af5dd7753e62353411cf0daf3b513c38818e9662Andreas Huber int64_t timeUs = systemTime() / 1000ll; 271082830f92373a1b9e512dbbfb940187ffa1c2c6fAndreas Huber 2723856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("dataCallbackTimestamp: %lld us", timeUs); 2736b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong Mutex::Autolock autoLock(mLock); 2746b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (!mStarted) { 2755ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("Spurious callback from AudioRecord. Drop the audio data."); 2766b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong return OK; 2776b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 27846292fb347d72a314d985e34e5e3743d846cb9b6James Dong 279a472613aec322e25891abf5c77bf3f7e3c244920James Dong // Drop retrieved and previously lost audio data. 280a472613aec322e25891abf5c77bf3f7e3c244920James Dong if (mNumFramesReceived == 0 && timeUs < mStartTimeUs) { 281a472613aec322e25891abf5c77bf3f7e3c244920James Dong mRecord->getInputFramesLost(); 2823856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("Drop audio data at %lld/%lld us", timeUs, mStartTimeUs); 283a472613aec322e25891abf5c77bf3f7e3c244920James Dong return OK; 284a472613aec322e25891abf5c77bf3f7e3c244920James Dong } 285a472613aec322e25891abf5c77bf3f7e3c244920James Dong 2866b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mNumFramesReceived == 0 && mPrevSampleTimeUs == 0) { 2876b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mInitialReadTimeUs = timeUs; 2886b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Initial delay 289af5dd7753e62353411cf0daf3b513c38818e9662Andreas Huber if (mStartTimeUs > 0) { 2906b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mStartTimeUs = timeUs - mStartTimeUs; 2916b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } else { 2926b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong // Assume latency is constant. 2936b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mStartTimeUs += mRecord->latency() * 1000; 294f60cafe0e6aad8f9ce54660fa88b651ae4e749e6James Dong } 295082830f92373a1b9e512dbbfb940187ffa1c2c6fAndreas Huber 2966b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mPrevSampleTimeUs = mStartTimeUs; 2976b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 298e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 299a472613aec322e25891abf5c77bf3f7e3c244920James Dong size_t numLostBytes = 0; 300a472613aec322e25891abf5c77bf3f7e3c244920James Dong if (mNumFramesReceived > 0) { // Ignore earlier frame lost 301a472613aec322e25891abf5c77bf3f7e3c244920James Dong // getInputFramesLost() returns the number of lost frames. 302a472613aec322e25891abf5c77bf3f7e3c244920James Dong // Convert number of frames lost to number of bytes lost. 303a472613aec322e25891abf5c77bf3f7e3c244920James Dong numLostBytes = mRecord->getInputFramesLost() * mRecord->frameSize(); 304a472613aec322e25891abf5c77bf3f7e3c244920James Dong } 305a472613aec322e25891abf5c77bf3f7e3c244920James Dong 3066b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong CHECK_EQ(numLostBytes & 1, 0u); 3076b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong CHECK_EQ(audioBuffer.size & 1, 0u); 3086b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (numLostBytes > 0) { 309b575ddce78d266fa218006f90306158dda5c8f56James Dong // Loss of audio frames should happen rarely; thus the LOGW should 310b575ddce78d266fa218006f90306158dda5c8f56James Dong // not cause a logging spam 311b575ddce78d266fa218006f90306158dda5c8f56James Dong ALOGW("Lost audio record data: %d bytes", numLostBytes); 312b575ddce78d266fa218006f90306158dda5c8f56James Dong } 313b575ddce78d266fa218006f90306158dda5c8f56James Dong 314b575ddce78d266fa218006f90306158dda5c8f56James Dong while (numLostBytes > 0) { 315b575ddce78d266fa218006f90306158dda5c8f56James Dong size_t bufferSize = numLostBytes; 316b575ddce78d266fa218006f90306158dda5c8f56James Dong if (numLostBytes > kMaxBufferSize) { 317b575ddce78d266fa218006f90306158dda5c8f56James Dong numLostBytes -= kMaxBufferSize; 318b575ddce78d266fa218006f90306158dda5c8f56James Dong bufferSize = kMaxBufferSize; 319b575ddce78d266fa218006f90306158dda5c8f56James Dong } else { 320b575ddce78d266fa218006f90306158dda5c8f56James Dong numLostBytes = 0; 321d707fcb3e29707ca4a5935c294ef0b38eb5aba5fJames Dong } 322b575ddce78d266fa218006f90306158dda5c8f56James Dong MediaBuffer *lostAudioBuffer = new MediaBuffer(bufferSize); 323b575ddce78d266fa218006f90306158dda5c8f56James Dong memset(lostAudioBuffer->data(), 0, bufferSize); 324b575ddce78d266fa218006f90306158dda5c8f56James Dong lostAudioBuffer->set_range(0, bufferSize); 325b575ddce78d266fa218006f90306158dda5c8f56James Dong queueInputBuffer_l(lostAudioBuffer, timeUs); 326b575ddce78d266fa218006f90306158dda5c8f56James Dong } 327b575ddce78d266fa218006f90306158dda5c8f56James Dong 328b575ddce78d266fa218006f90306158dda5c8f56James Dong if (audioBuffer.size == 0) { 329b575ddce78d266fa218006f90306158dda5c8f56James Dong ALOGW("Nothing is available from AudioRecord callback buffer"); 330b575ddce78d266fa218006f90306158dda5c8f56James Dong return OK; 3316b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong } 3323c3763d2ee1cd1fba7fe522fbaf0faca315d8c2aJames Dong 333b575ddce78d266fa218006f90306158dda5c8f56James Dong const size_t bufferSize = audioBuffer.size; 334b575ddce78d266fa218006f90306158dda5c8f56James Dong MediaBuffer *buffer = new MediaBuffer(bufferSize); 335b575ddce78d266fa218006f90306158dda5c8f56James Dong memcpy((uint8_t *) buffer->data(), 336b575ddce78d266fa218006f90306158dda5c8f56James Dong audioBuffer.i16, audioBuffer.size); 3376b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->set_range(0, bufferSize); 338b575ddce78d266fa218006f90306158dda5c8f56James Dong queueInputBuffer_l(buffer, timeUs); 339b575ddce78d266fa218006f90306158dda5c8f56James Dong return OK; 340b575ddce78d266fa218006f90306158dda5c8f56James Dong} 341b575ddce78d266fa218006f90306158dda5c8f56James Dong 342b575ddce78d266fa218006f90306158dda5c8f56James Dongvoid AudioSource::queueInputBuffer_l(MediaBuffer *buffer, int64_t timeUs) { 343b575ddce78d266fa218006f90306158dda5c8f56James Dong const size_t bufferSize = buffer->range_length(); 344b575ddce78d266fa218006f90306158dda5c8f56James Dong const size_t frameSize = mRecord->frameSize(); 345b575ddce78d266fa218006f90306158dda5c8f56James Dong const int64_t timestampUs = 346b575ddce78d266fa218006f90306158dda5c8f56James Dong mPrevSampleTimeUs + 347b575ddce78d266fa218006f90306158dda5c8f56James Dong ((1000000LL * (bufferSize / frameSize)) + 348b575ddce78d266fa218006f90306158dda5c8f56James Dong (mSampleRate >> 1)) / mSampleRate; 349e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 3506b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong if (mNumFramesReceived == 0) { 3516b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->meta_data()->setInt64(kKeyAnchorTime, mStartTimeUs); 352542db5d438988360d491a5add1040a2df9aa90c9James Dong } 353b575ddce78d266fa218006f90306158dda5c8f56James Dong 3546b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->meta_data()->setInt64(kKeyTime, mPrevSampleTimeUs); 3556b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong buffer->meta_data()->setInt64(kKeyDriftTime, timeUs - mInitialReadTimeUs); 3566b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mPrevSampleTimeUs = timestampUs; 357b575ddce78d266fa218006f90306158dda5c8f56James Dong mNumFramesReceived += bufferSize / frameSize; 3586b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mBuffersReceived.push_back(buffer); 3596b61f4355db1974cd0f0dfaa4effdd7117b9f09bJames Dong mFrameAvailableCondition.signal(); 360e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} 361e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber 362d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dongvoid AudioSource::trackMaxAmplitude(int16_t *data, int nSamples) { 363d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong for (int i = nSamples; i > 0; --i) { 364d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong int16_t value = *data++; 365d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong if (value < 0) { 366d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong value = -value; 367d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 368d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong if (mMaxAmplitude < value) { 369d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mMaxAmplitude = value; 370d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 371d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 372d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong} 373d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong 374d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dongint16_t AudioSource::getMaxAmplitude() { 375d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong // First call activates the tracking. 376d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong if (!mTrackMaxAmplitude) { 377d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mTrackMaxAmplitude = true; 378d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong } 379d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong int16_t value = mMaxAmplitude; 380d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong mMaxAmplitude = 0; 3813856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("max amplitude since last call: %d", value); 382d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong return value; 383d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong} 384d3d4e5069e1af0437c4f5a7b4ba344bda5b937afJames Dong 385e7c9cb48fec02697227bd847cd2e69432659adfdAndreas Huber} // namespace android 386