AudioSource.cpp revision d7f1c3d69274fef8772a663ce1c792fd0466fcc5
107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber/* 207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * Copyright (C) 2010 The Android Open Source Project 307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * 407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * you may not use this file except in compliance with the License. 607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * You may obtain a copy of the License at 707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * 807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * 1007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * Unless required by applicable law or agreed to in writing, software 1107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 1207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * See the License for the specific language governing permissions and 1407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber * limitations under the License. 1507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber */ 1607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 17abed93a51b6b476ecb23a2c22faa43a219eb60a7James Dong//#define LOG_NDEBUG 0 18abed93a51b6b476ecb23a2c22faa43a219eb60a7James Dong#define LOG_TAG "AudioSource" 19abed93a51b6b476ecb23a2c22faa43a219eb60a7James Dong#include <utils/Log.h> 20abed93a51b6b476ecb23a2c22faa43a219eb60a7James Dong 2107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber#include <media/stagefright/AudioSource.h> 2207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 2307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber#include <media/AudioRecord.h> 2407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber#include <media/stagefright/MediaBufferGroup.h> 2507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber#include <media/stagefright/MediaDebug.h> 2607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber#include <media/stagefright/MediaDefs.h> 2707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber#include <media/stagefright/MetaData.h> 28dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong#include <cutils/properties.h> 29c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong#include <stdlib.h> 3007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 3107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Hubernamespace android { 3207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 3307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas HuberAudioSource::AudioSource( 3407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber int inputSource, uint32_t sampleRate, uint32_t channels) 35d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong : mStarted(false), 36dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong mCollectStats(false), 37c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mPrevSampleTimeUs(0), 38afe5305855e2f3d830337f768028615a44d4aa16James Dong mTotalLostFrames(0), 39afe5305855e2f3d830337f768028615a44d4aa16James Dong mPrevLostBytes(0), 4007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mGroup(NULL) { 41d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong 42d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong LOGV("sampleRate: %d, channels: %d", sampleRate, channels); 43d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong CHECK(channels == 1 || channels == 2); 44d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong uint32_t flags = AudioRecord::RECORD_AGC_ENABLE | 45d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong AudioRecord::RECORD_NS_ENABLE | 46d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong AudioRecord::RECORD_IIR_ENABLE; 47d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong 48d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong mRecord = new AudioRecord( 49d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong inputSource, sampleRate, AudioSystem::PCM_16_BIT, 50d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong channels > 1? AudioSystem::CHANNEL_IN_STEREO: AudioSystem::CHANNEL_IN_MONO, 51d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong 4 * kMaxBufferSize / sizeof(int16_t), /* Enable ping-pong buffers */ 52d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong flags); 53d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong 54d77d2a980c6fbdc00b7d62a34d9b799dcf8c9514James Dong mInitCheck = mRecord->initCheck(); 5507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 5607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 5707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas HuberAudioSource::~AudioSource() { 5807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber if (mStarted) { 5907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber stop(); 6007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber } 6107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 6207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber delete mRecord; 6307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mRecord = NULL; 6407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 6507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 6607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huberstatus_t AudioSource::initCheck() const { 6707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return mInitCheck; 6807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 6907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 7007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huberstatus_t AudioSource::start(MetaData *params) { 7107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber if (mStarted) { 7207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return UNKNOWN_ERROR; 7307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber } 7407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 75dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong char value[PROPERTY_VALUE_MAX]; 76dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong if (property_get("media.stagefright.record-stats", value, NULL) 77dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 78dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong mCollectStats = true; 79dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong } 8036e573bf7db5888f92c52eda26e0771aaa2406e4James Dong 8157e7f83c0336db3f03666f077bce4c2692a88cf6James Dong mTrackMaxAmplitude = false; 8257e7f83c0336db3f03666f077bce4c2692a88cf6James Dong mMaxAmplitude = 0; 8336e573bf7db5888f92c52eda26e0771aaa2406e4James Dong mStartTimeUs = 0; 8436e573bf7db5888f92c52eda26e0771aaa2406e4James Dong int64_t startTimeUs; 8536e573bf7db5888f92c52eda26e0771aaa2406e4James Dong if (params && params->findInt64(kKeyTime, &startTimeUs)) { 8636e573bf7db5888f92c52eda26e0771aaa2406e4James Dong mStartTimeUs = startTimeUs; 8736e573bf7db5888f92c52eda26e0771aaa2406e4James Dong } 8807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber status_t err = mRecord->start(); 8907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 9007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber if (err == OK) { 9107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mGroup = new MediaBufferGroup; 9207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mGroup->add_buffer(new MediaBuffer(kMaxBufferSize)); 9307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 9407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mStarted = true; 9507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber } 9607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 9707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return err; 9807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 9907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 10007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huberstatus_t AudioSource::stop() { 10107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber if (!mStarted) { 10207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return UNKNOWN_ERROR; 10307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber } 10407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 10507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mRecord->stop(); 10607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 10707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber delete mGroup; 10807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mGroup = NULL; 10907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 11007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber mStarted = false; 11107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 112dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong if (mCollectStats) { 113afe5305855e2f3d830337f768028615a44d4aa16James Dong LOGI("Total lost audio frames: %lld", 114afe5305855e2f3d830337f768028615a44d4aa16James Dong mTotalLostFrames + (mPrevLostBytes >> 1)); 115dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong } 116dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong 11707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return OK; 11807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 11907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 12007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Hubersp<MetaData> AudioSource::getFormat() { 12107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber sp<MetaData> meta = new MetaData; 12207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_RAW); 12307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber meta->setInt32(kKeySampleRate, mRecord->getSampleRate()); 12407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber meta->setInt32(kKeyChannelCount, mRecord->channelCount()); 12507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber meta->setInt32(kKeyMaxInputSize, kMaxBufferSize); 12607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 12707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return meta; 12807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 12907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 130c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong/* 131c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong * Returns -1 if frame skipping request is too long. 132c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong * Returns 0 if there is no need to skip frames. 133c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong * Returns 1 if we need to skip frames. 134c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong */ 135c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dongstatic int skipFrame(int64_t timestampUs, 136c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong const MediaSource::ReadOptions *options) { 137c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 138c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong int64_t skipFrameUs; 139c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (!options || !options->getSkipFrame(&skipFrameUs)) { 140c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return 0; 141c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } 142c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 143c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (skipFrameUs <= timestampUs) { 144c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return 0; 145c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } 146c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 147c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong // Safe guard against the abuse of the kSkipFrame_Option. 148c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (skipFrameUs - timestampUs >= 1E6) { 149c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong LOGE("Frame skipping requested is way too long: %lld us", 150c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong skipFrameUs - timestampUs); 151c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 152c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return -1; 153c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } 154c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 155c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong LOGV("skipFrame: %lld us > timestamp: %lld us", 156c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong skipFrameUs, timestampUs); 157c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 158c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return 1; 159c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 160c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong} 161c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 162d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dongvoid AudioSource::rampVolume( 163d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int32_t startFrame, int32_t rampDurationFrames, 164d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong uint8_t *data, size_t bytes) { 165d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong 166d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong const int32_t kShift = 14; 167d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int32_t fixedMultiplier = (startFrame << kShift) / rampDurationFrames; 168d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong const int32_t nChannels = mRecord->channelCount(); 169d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int32_t stopFrame = startFrame + bytes / sizeof(int16_t); 170d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int16_t *frame = (int16_t *) data; 171d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong if (stopFrame > rampDurationFrames) { 172d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong stopFrame = rampDurationFrames; 173d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } 174d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong 175d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong while (startFrame < stopFrame) { 176d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong if (nChannels == 1) { // mono 177d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong frame[0] = (frame[0] * fixedMultiplier) >> kShift; 178d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong ++frame; 179d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong ++startFrame; 180d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } else { // stereo 181d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong frame[0] = (frame[0] * fixedMultiplier) >> kShift; 182d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong frame[1] = (frame[1] * fixedMultiplier) >> kShift; 183d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong frame += 2; 184d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong startFrame += 2; 185d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } 186d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong 187d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong // Update the multiplier every 4 frames 188d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong if ((startFrame & 3) == 0) { 189d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong fixedMultiplier = (startFrame << kShift) / rampDurationFrames; 190d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } 191d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } 192d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong} 193d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong 19407bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huberstatus_t AudioSource::read( 19507bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber MediaBuffer **out, const ReadOptions *options) { 19607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber *out = NULL; 19707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 19807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber MediaBuffer *buffer; 19907bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber CHECK_EQ(mGroup->acquire_buffer(&buffer), OK); 20007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 201c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong int err = 0; 20253d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong while (mStarted) { 203c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 20453d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong uint32_t numFramesRecorded; 20553d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong mRecord->getPosition(&numFramesRecorded); 20653d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong 20753d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong 208c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (numFramesRecorded == 0 && mPrevSampleTimeUs == 0) { 20953d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong // Initial delay 21053d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong if (mStartTimeUs > 0) { 211c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mStartTimeUs = systemTime() / 1000 - mStartTimeUs; 21253d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } else { 213c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong // Assume latency is constant. 214c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mStartTimeUs += mRecord->latency() * 1000; 21553d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } 216c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mPrevSampleTimeUs = mStartTimeUs; 21753d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } 21853d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong 219c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong uint32_t sampleRate = mRecord->getSampleRate(); 220c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 221c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong // Insert null frames when lost frames are detected. 222c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong int64_t timestampUs = mPrevSampleTimeUs; 223c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong uint32_t numLostBytes = mRecord->getInputFramesLost() << 1; 224afe5305855e2f3d830337f768028615a44d4aa16James Dong numLostBytes += mPrevLostBytes; 225c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong#if 0 226c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong // Simulate lost frames 227afe5305855e2f3d830337f768028615a44d4aa16James Dong numLostBytes = ((rand() * 1.0 / RAND_MAX)) * 2 * kMaxBufferSize; 228afe5305855e2f3d830337f768028615a44d4aa16James Dong numLostBytes &= 0xFFFFFFFE; // Alignment requirement 229c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 230c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong // Reduce the chance to lose 231c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (rand() * 1.0 / RAND_MAX >= 0.05) { 232c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong numLostBytes = 0; 233c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } 234c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong#endif 235c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (numLostBytes > 0) { 236afe5305855e2f3d830337f768028615a44d4aa16James Dong if (numLostBytes > kMaxBufferSize) { 237afe5305855e2f3d830337f768028615a44d4aa16James Dong mPrevLostBytes = numLostBytes - kMaxBufferSize; 238afe5305855e2f3d830337f768028615a44d4aa16James Dong numLostBytes = kMaxBufferSize; 239afe5305855e2f3d830337f768028615a44d4aa16James Dong } 240afe5305855e2f3d830337f768028615a44d4aa16James Dong 241afe5305855e2f3d830337f768028615a44d4aa16James Dong CHECK_EQ(numLostBytes & 1, 0); 242afe5305855e2f3d830337f768028615a44d4aa16James Dong timestampUs += ((1000000LL * (numLostBytes >> 1)) + 243afe5305855e2f3d830337f768028615a44d4aa16James Dong (sampleRate >> 1)) / sampleRate; 244c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong 245c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong CHECK(timestampUs > mPrevSampleTimeUs); 246c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if (mCollectStats) { 247afe5305855e2f3d830337f768028615a44d4aa16James Dong mTotalLostFrames += (numLostBytes >> 1); 248c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } 249c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if ((err = skipFrame(timestampUs, options)) == -1) { 250c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong buffer->release(); 251c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return UNKNOWN_ERROR; 252c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } else if (err != 0) { 253c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong continue; 25453d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } 255c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong memset(buffer->data(), 0, numLostBytes); 256c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong buffer->set_range(0, numLostBytes); 257c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong buffer->meta_data()->setInt64(kKeyTime, mPrevSampleTimeUs); 258c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mPrevSampleTimeUs = timestampUs; 259c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong *out = buffer; 260c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return OK; 26136e573bf7db5888f92c52eda26e0771aaa2406e4James Dong } 26207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 263c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong ssize_t n = mRecord->read(buffer->data(), buffer->size()); 26453d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong if (n < 0) { 26553d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong buffer->release(); 26653d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong return (status_t)n; 267dae9fd31907c62712f7a96bb2a8e288b0cca57c2James Dong } 26807bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 269c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong int64_t recordDurationUs = (1000000LL * n >> 1) / sampleRate; 270c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong timestampUs += recordDurationUs; 271c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong if ((err = skipFrame(timestampUs, options)) == -1) { 272c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong buffer->release(); 273c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong return UNKNOWN_ERROR; 274c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } else if (err != 0) { 27553d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong continue; 27653d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } 27707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 278d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong if (mPrevSampleTimeUs - mStartTimeUs < kAutoRampStartUs) { 279d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong // Mute the initial video recording signal 280d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong memset((uint8_t *) buffer->data(), 0, n); 281d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } else if (mPrevSampleTimeUs - mStartTimeUs < kAutoRampStartUs + kAutoRampDurationUs) { 282d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int32_t autoRampDurationFrames = 283d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong (kAutoRampDurationUs * sampleRate + 500000LL) / 1000000LL; 284d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong 285d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int32_t autoRampStartFrames = 286d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong (kAutoRampStartUs * sampleRate + 500000LL) / 1000000LL; 287d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong 288d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong int32_t nFrames = numFramesRecorded - autoRampStartFrames; 289d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong rampVolume(nFrames, autoRampDurationFrames, (uint8_t *) buffer->data(), n); 290d7f1c3d69274fef8772a663ce1c792fd0466fcc5James Dong } 29153d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong if (mTrackMaxAmplitude) { 29253d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong trackMaxAmplitude((int16_t *) buffer->data(), n >> 1); 29353d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } 29457e7f83c0336db3f03666f077bce4c2692a88cf6James Dong 295c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong buffer->meta_data()->setInt64(kKeyTime, mPrevSampleTimeUs); 296c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong CHECK(timestampUs > mPrevSampleTimeUs); 297afe5305855e2f3d830337f768028615a44d4aa16James Dong if (mTotalLostFrames == 0) { 298c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong CHECK_EQ(mPrevSampleTimeUs, 299c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mStartTimeUs + (1000000LL * numFramesRecorded) / sampleRate); 300c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong } 301c3ae937a95cbaf4afbe8aa006dc3db4c27f0ad44James Dong mPrevSampleTimeUs = timestampUs; 30253d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong LOGV("initial delay: %lld, sample rate: %d, timestamp: %lld", 30353d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong mStartTimeUs, sampleRate, timestampUs); 30436e573bf7db5888f92c52eda26e0771aaa2406e4James Dong 30553d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong buffer->set_range(0, n); 30607bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 30753d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong *out = buffer; 30853d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong return OK; 30953d4e0d58e2d5c18f6e026c705af833b9bdd7abaJames Dong } 31007bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 31107bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber return OK; 31207bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} 31307bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber 31457e7f83c0336db3f03666f077bce4c2692a88cf6James Dongvoid AudioSource::trackMaxAmplitude(int16_t *data, int nSamples) { 31557e7f83c0336db3f03666f077bce4c2692a88cf6James Dong for (int i = nSamples; i > 0; --i) { 31657e7f83c0336db3f03666f077bce4c2692a88cf6James Dong int16_t value = *data++; 31757e7f83c0336db3f03666f077bce4c2692a88cf6James Dong if (value < 0) { 31857e7f83c0336db3f03666f077bce4c2692a88cf6James Dong value = -value; 31957e7f83c0336db3f03666f077bce4c2692a88cf6James Dong } 32057e7f83c0336db3f03666f077bce4c2692a88cf6James Dong if (mMaxAmplitude < value) { 32157e7f83c0336db3f03666f077bce4c2692a88cf6James Dong mMaxAmplitude = value; 32257e7f83c0336db3f03666f077bce4c2692a88cf6James Dong } 32357e7f83c0336db3f03666f077bce4c2692a88cf6James Dong } 32457e7f83c0336db3f03666f077bce4c2692a88cf6James Dong} 32557e7f83c0336db3f03666f077bce4c2692a88cf6James Dong 32657e7f83c0336db3f03666f077bce4c2692a88cf6James Dongint16_t AudioSource::getMaxAmplitude() { 32757e7f83c0336db3f03666f077bce4c2692a88cf6James Dong // First call activates the tracking. 32857e7f83c0336db3f03666f077bce4c2692a88cf6James Dong if (!mTrackMaxAmplitude) { 32957e7f83c0336db3f03666f077bce4c2692a88cf6James Dong mTrackMaxAmplitude = true; 33057e7f83c0336db3f03666f077bce4c2692a88cf6James Dong } 33157e7f83c0336db3f03666f077bce4c2692a88cf6James Dong int16_t value = mMaxAmplitude; 33257e7f83c0336db3f03666f077bce4c2692a88cf6James Dong mMaxAmplitude = 0; 33357e7f83c0336db3f03666f077bce4c2692a88cf6James Dong LOGV("max amplitude since last call: %d", value); 33457e7f83c0336db3f03666f077bce4c2692a88cf6James Dong return value; 33557e7f83c0336db3f03666f077bce4c2692a88cf6James Dong} 33657e7f83c0336db3f03666f077bce4c2692a88cf6James Dong 33707bf09da4a365282fc35f800b62a83e0fa5533e2Andreas Huber} // namespace android 338