AacAdtsExtractor.cpp revision bb832e853d4afb11b0a3287b2eb0cad87696d631
1bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi/* 2bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * Copyright (C) 2011 The Android Open Source Project 3bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * 4bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * Licensed under the Apache License, Version 2.0 (the "License"); 5bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * you may not use this file except in compliance with the License. 6bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * You may obtain a copy of the License at 7bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * 8bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * http://www.apache.org/licenses/LICENSE-2.0 9bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * 10bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * Unless required by applicable law or agreed to in writing, software 11bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * distributed under the License is distributed on an "AS IS" BASIS, 12bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * See the License for the specific language governing permissions and 14bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi * limitations under the License. 15bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi */ 16bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 17bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi#include "sllog.h" 18bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi#include <utils/Log.h> 19bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 20bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi#include "android/include/AacAdtsExtractor.h" 21bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi#include "include/avc_utils.h" 22bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 23bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 24bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivinamespace android { 25bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 26bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi#define ADTS_HEADER_LENGTH 7 27bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi// ADTS header size is 7, but frame size information ends on byte 6 (when counting from byte 1) 28bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi#define ADTS_HEADER_SIZE_UP_TO_FRAMESIZE 6 29bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 30bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi//////////////////////////////////////////////////////////////////////////////// 31bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 32bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi// Returns the sample rate based on the sampling frequency index 33bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatic uint32_t get_sample_rate(const uint8_t sf_index) 34bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi{ 35bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi static const uint32_t sample_rates[] = 36bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi { 37bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 96000, 88200, 64000, 48000, 44100, 32000, 38bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 24000, 22050, 16000, 12000, 11025, 8000 39bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi }; 40bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 41bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (sf_index < sizeof(sample_rates) / sizeof(sample_rates[0])) { 42bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return sample_rates[sf_index]; 43bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 44bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 45bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return 0; 46bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 47bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 48bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatic size_t getFrameSize(const sp<DataSource> &source, off64_t offset) { 49bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi size_t frameSize = 0; 50bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 51bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi uint8_t syncHeader[ADTS_HEADER_SIZE_UP_TO_FRAMESIZE]; 52bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi const uint8_t *syncword = syncHeader; 53bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi const uint8_t *header = syncHeader + 3; 54bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 55bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (source->readAt(offset, &syncHeader, ADTS_HEADER_SIZE_UP_TO_FRAMESIZE) 56bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi != ADTS_HEADER_SIZE_UP_TO_FRAMESIZE) { 57bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGE("AacAdtsExtractor:: getFrameSize() returns 0 (syncword and header read error)"); 58bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return 0; 59bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 60bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 61bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if ((syncword[0] != 0xff) || ((syncword[1] & 0xf6) != 0xf0)) { 62bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGE("AacAdtsExtractor:: getFrameSize() returns 0 (syncword pb)"); 63bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return 0; 64bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 65bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 66bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi const uint8_t protectionAbsent = syncword[1] & 0x1; 67bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 68bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSize = (header[0] & 0x3) << 11 | header[1] << 3 | header[2] >> 5; 69bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // the frame size read already contains the size of the ADTS header, so no need to add it here 70bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSize += protectionAbsent ? 0 : 2; 71bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 72bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //SL_LOGV("AacAdtsExtractor:: getFrameSize() returns %u", frameSize); 73bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 74bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return frameSize; 75bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 76bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 77bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 78bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsExtractor::AacAdtsExtractor(const sp<DataSource> &source) 79bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi : mDataSource(source), 80bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mInitCheck(NO_INIT), 81bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mFrameDurationUs(0) { 82bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 83bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // difference with framework's AAC Extractor: we have already validated the data 84bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // upon enqueueing, so no need to sniff the data: 85bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // String8 mimeType; 86bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // float confidence; 87bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // if (!SniffAAC(mDataSource, &mimeType, &confidence, NULL)) { 88bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // return; 89bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // } 90bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 91bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi uint8_t profile, sf_index, channel, header[2]; 92bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mDataSource->readAt(2, &header, 2) < 2) { 93bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return; 94bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 95bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 96bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi profile = (header[0] >> 6) & 0x3; 97bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi sf_index = (header[0] >> 2) & 0xf; 98bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi uint32_t sr = get_sample_rate(sf_index); 99bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 100bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (sr == 0) { 101bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return; 102bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 103bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi channel = (header[0] & 0x1) << 2 | (header[1] >> 6); 104bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 105bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGV("AacAdtsExtractor has found sr=%d channel=%d", sr, channel); 106bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 107bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mMeta = MakeAACCodecSpecificData(profile, sf_index, channel); 108bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 109bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi off64_t offset = 0; 110bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi off64_t streamSize, numFrames = 0; 111bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi size_t frameSize = 0; 112bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi int64_t duration = 0; 113bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 114bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mDataSource->getSize(&streamSize) == OK) { 115bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi while (offset < streamSize) { 116bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if ((frameSize = getFrameSize(mDataSource, offset)) == 0) { 117bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //SL_LOGV("AacAdtsExtractor() querying framesize at offset=%lld", offset); 118bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return; 119bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 120bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 121bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi offset += frameSize; 122bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi numFrames ++; 123bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 124bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 125bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // Round up and get the duration 126bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mFrameDurationUs = (1024 * 1000000ll + (sr - 1)) / sr; 127bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi duration = numFrames * mFrameDurationUs; 128bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mMeta->setInt64(kKeyDuration, duration); 129bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 130bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 131bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mInitCheck = OK; 132bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 133bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 134bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 135bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 136bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsExtractor::~AacAdtsExtractor() { 137bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 138bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 139bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 140bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MetaData> AacAdtsExtractor::getMetaData() { 141bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi sp<MetaData> meta = new MetaData; 142bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 143bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mInitCheck != OK) { 144bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return meta; 145bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 146bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 147bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_AAC_ADTS); 148bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 149bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return meta; 150bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 151bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 152bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 153bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisize_t AacAdtsExtractor::countTracks() { 154bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return mInitCheck == OK ? 1 : 0; 155bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 156bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 157bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 158bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MediaSource> AacAdtsExtractor::getTrack(size_t index) { 159bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mInitCheck != OK || index != 0) { 160bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return NULL; 161bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 162bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 163bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return new AacAdtsSource(mDataSource, mMeta, mFrameDurationUs); 164bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 165bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 166bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 167bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MetaData> AacAdtsExtractor::getTrackMetaData(size_t index, uint32_t flags) { 168bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mInitCheck != OK || index != 0) { 169bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return NULL; 170bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 171bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 172bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return mMeta; 173bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 174bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 175bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 176bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi//////////////////////////////////////////////////////////////////////////////// 177bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 178bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi// 8192 = 2^13, 13bit AAC frame size (in bytes) 179bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Triviconst size_t AacAdtsSource::kMaxFrameSize = 8192; 180bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 181bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsSource::AacAdtsSource( 182bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi const sp<DataSource> &source, const sp<MetaData> &meta, 183bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi int64_t frame_duration_us) 184bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi : mDataSource(source), 185bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mMeta(meta), 186bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mOffset(0), 187bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mCurrentTimeUs(0), 188bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mStarted(false), 189bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup(NULL), 190bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mFrameDurationUs(frame_duration_us) { 191bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 192bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 193bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 194bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsSource::~AacAdtsSource() { 195bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mStarted) { 196bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi stop(); 197bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 198bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 199bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 200bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 201bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatus_t AacAdtsSource::start(MetaData *params) { 202bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi CHECK(!mStarted); 203bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 204bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mOffset = 0; 205bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mCurrentTimeUs = 0; 206bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup = new MediaBufferGroup; 207bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup->add_buffer(new MediaBuffer(kMaxFrameSize)); 208bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mStarted = true; 209bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 210bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return OK; 211bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 212bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 213bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 214bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatus_t AacAdtsSource::stop() { 215bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi CHECK(mStarted); 216bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 217bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi delete mGroup; 218bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup = NULL; 219bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 220bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mStarted = false; 221bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return OK; 222bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 223bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 224bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 225bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MetaData> AacAdtsSource::getFormat() { 226bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return mMeta; 227bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 228bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 229bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 230bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatus_t AacAdtsSource::read( 231bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi MediaBuffer **out, const ReadOptions *options) { 232bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi *out = NULL; 233bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 234bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi int64_t seekTimeUs; 235bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi ReadOptions::SeekMode mode; 236bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (options && options->getSeekTo(&seekTimeUs, &mode)) { 237bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // difference with framework's AAC Extractor: no seeking 238bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGE("Can't seek in AAC ADTS buffer queue"); 239bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 240bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 241bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi size_t frameSize, frameSizeWithoutHeader; 242bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGV("AacAdtsSource::read() offset=%lld", mOffset); 243bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if ((frameSize = getFrameSize(mDataSource, mOffset)) == 0) { 244bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi LOGE("AacAdtsSource::read() returns EOS"); 245bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return ERROR_END_OF_STREAM; 246bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // FIXME if we return EOS here, verify we can restart decoding when we get new data 247bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // with start() 248bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //LOGE("AacAdtsSource::read() should return EOS, but returning OK"); 249bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //return OK; 250bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 251bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 252bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi MediaBuffer *buffer; 253bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi status_t err = mGroup->acquire_buffer(&buffer); 254bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (err != OK) { 255bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return err; 256bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 257bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 258bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSizeWithoutHeader = frameSize - ADTS_HEADER_LENGTH; 259bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi size_t readSize = mDataSource->readAt(mOffset + ADTS_HEADER_LENGTH, buffer->data(), 260bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSizeWithoutHeader); 261bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //SL_LOGV("AacAdtsSource::read() readAt returned %u bytes", readSize); 262bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (readSize != (ssize_t)frameSizeWithoutHeader) { 263bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGW("AacAdtsSource::read() readSize != frameSizeWithoutHeader"); 264bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->release(); 265bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer = NULL; 266bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return ERROR_IO; 267bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 268bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 269bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->set_range(0, frameSizeWithoutHeader); 270bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->meta_data()->setInt64(kKeyTime, mCurrentTimeUs); 271bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->meta_data()->setInt32(kKeyIsSyncFrame, 1); 272bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 273bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mOffset += frameSize; 274bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mCurrentTimeUs += mFrameDurationUs; 275bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 276bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi *out = buffer; 277bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return OK; 278bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 279bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 280bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} // namespace android 281