AacAdtsExtractor.cpp revision 677c76347d9aaca4cf3746b3dbfc8a741281066b
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 55677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten ssize_t readSize = source->readAt(offset, &syncHeader, ADTS_HEADER_SIZE_UP_TO_FRAMESIZE); 56677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten if (readSize == 0) { 57677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten // EOS is normal, not an error 58677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten SL_LOGV("AacAdtsExtractor::getFrameSize EOS"); 59677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten return 0; 60677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten } 61677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten if (readSize != ADTS_HEADER_SIZE_UP_TO_FRAMESIZE) { 62677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten SL_LOGE("AacAdtsExtractor:: getFrameSize() returns %d (syncword and header read error)", 63677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten (int) readSize); 64bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return 0; 65bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 66bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 67bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if ((syncword[0] != 0xff) || ((syncword[1] & 0xf6) != 0xf0)) { 68bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGE("AacAdtsExtractor:: getFrameSize() returns 0 (syncword pb)"); 69bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return 0; 70bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 71bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 72bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi const uint8_t protectionAbsent = syncword[1] & 0x1; 73bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 74bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSize = (header[0] & 0x3) << 11 | header[1] << 3 | header[2] >> 5; 75bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // the frame size read already contains the size of the ADTS header, so no need to add it here 76bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSize += protectionAbsent ? 0 : 2; 77bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 78bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //SL_LOGV("AacAdtsExtractor:: getFrameSize() returns %u", frameSize); 79bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 80bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return frameSize; 81bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 82bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 83bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 84bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsExtractor::AacAdtsExtractor(const sp<DataSource> &source) 85bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi : mDataSource(source), 86bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mInitCheck(NO_INIT), 87bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mFrameDurationUs(0) { 88bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 89bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // difference with framework's AAC Extractor: we have already validated the data 90bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // upon enqueueing, so no need to sniff the data: 91bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // String8 mimeType; 92bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // float confidence; 93bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // if (!SniffAAC(mDataSource, &mimeType, &confidence, NULL)) { 94bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // return; 95bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // } 96bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 97bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi uint8_t profile, sf_index, channel, header[2]; 98bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mDataSource->readAt(2, &header, 2) < 2) { 99bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return; 100bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 101bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 102bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi profile = (header[0] >> 6) & 0x3; 103bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi sf_index = (header[0] >> 2) & 0xf; 104bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi uint32_t sr = get_sample_rate(sf_index); 105bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 106bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (sr == 0) { 107bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return; 108bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 109bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi channel = (header[0] & 0x1) << 2 | (header[1] >> 6); 110bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 111bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGV("AacAdtsExtractor has found sr=%d channel=%d", sr, channel); 112bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 113bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mMeta = MakeAACCodecSpecificData(profile, sf_index, channel); 114bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 115bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi off64_t offset = 0; 116bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi off64_t streamSize, numFrames = 0; 117bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi size_t frameSize = 0; 118bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi int64_t duration = 0; 119bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 120bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mDataSource->getSize(&streamSize) == OK) { 121bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi while (offset < streamSize) { 122bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if ((frameSize = getFrameSize(mDataSource, offset)) == 0) { 123bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //SL_LOGV("AacAdtsExtractor() querying framesize at offset=%lld", offset); 124bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return; 125bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 126bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 127bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi offset += frameSize; 128bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi numFrames ++; 129bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 130bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 131bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // Round up and get the duration 132bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mFrameDurationUs = (1024 * 1000000ll + (sr - 1)) / sr; 133bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi duration = numFrames * mFrameDurationUs; 134bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mMeta->setInt64(kKeyDuration, duration); 135bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 136bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 137bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mInitCheck = OK; 138bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 139bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 140bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 141bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 142bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsExtractor::~AacAdtsExtractor() { 143bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 144bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 145bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 146bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MetaData> AacAdtsExtractor::getMetaData() { 147bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi sp<MetaData> meta = new MetaData; 148bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 149bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mInitCheck != OK) { 150bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return meta; 151bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 152bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 153bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_AAC_ADTS); 154bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 155bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return meta; 156bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 157bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 158bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 159bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisize_t AacAdtsExtractor::countTracks() { 160bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return mInitCheck == OK ? 1 : 0; 161bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 162bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 163bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 164bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MediaSource> AacAdtsExtractor::getTrack(size_t index) { 165bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mInitCheck != OK || index != 0) { 166bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return NULL; 167bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 168bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 169bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return new AacAdtsSource(mDataSource, mMeta, mFrameDurationUs); 170bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 171bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 172bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 173bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MetaData> AacAdtsExtractor::getTrackMetaData(size_t index, uint32_t flags) { 174bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mInitCheck != OK || index != 0) { 175bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return NULL; 176bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 177bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 178bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return mMeta; 179bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 180bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 181bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 182bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi//////////////////////////////////////////////////////////////////////////////// 183bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 184bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi// 8192 = 2^13, 13bit AAC frame size (in bytes) 185bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Triviconst size_t AacAdtsSource::kMaxFrameSize = 8192; 186bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 187bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsSource::AacAdtsSource( 188bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi const sp<DataSource> &source, const sp<MetaData> &meta, 189bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi int64_t frame_duration_us) 190bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi : mDataSource(source), 191bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mMeta(meta), 192bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mOffset(0), 193bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mCurrentTimeUs(0), 194bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mStarted(false), 195bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup(NULL), 196bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mFrameDurationUs(frame_duration_us) { 197bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 198bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 199bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 200bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel TriviAacAdtsSource::~AacAdtsSource() { 201bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (mStarted) { 202bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi stop(); 203bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 204bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 205bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 206bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 207bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatus_t AacAdtsSource::start(MetaData *params) { 208bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi CHECK(!mStarted); 209bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 210bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mOffset = 0; 211bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mCurrentTimeUs = 0; 212bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup = new MediaBufferGroup; 213bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup->add_buffer(new MediaBuffer(kMaxFrameSize)); 214bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mStarted = true; 215bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 216bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return OK; 217bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 218bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 219bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 220bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatus_t AacAdtsSource::stop() { 221bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi CHECK(mStarted); 222bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 223bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi delete mGroup; 224bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mGroup = NULL; 225bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 226bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mStarted = false; 227bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return OK; 228bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 229bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 230bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 231bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivisp<MetaData> AacAdtsSource::getFormat() { 232bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return mMeta; 233bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 234bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 235bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 236bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivistatus_t AacAdtsSource::read( 237bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi MediaBuffer **out, const ReadOptions *options) { 238bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi *out = NULL; 239bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 240bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi int64_t seekTimeUs; 241bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi ReadOptions::SeekMode mode; 242bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (options && options->getSeekTo(&seekTimeUs, &mode)) { 243bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // difference with framework's AAC Extractor: no seeking 244bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGE("Can't seek in AAC ADTS buffer queue"); 245bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 246bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 247bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi size_t frameSize, frameSizeWithoutHeader; 248bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGV("AacAdtsSource::read() offset=%lld", mOffset); 249bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if ((frameSize = getFrameSize(mDataSource, mOffset)) == 0) { 250677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten SL_LOGV("AacAdtsSource::read() returns EOS"); 251bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return ERROR_END_OF_STREAM; 252bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // FIXME if we return EOS here, verify we can restart decoding when we get new data 253bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi // with start() 254bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //LOGE("AacAdtsSource::read() should return EOS, but returning OK"); 255bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //return OK; 256bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 257bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 258bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi MediaBuffer *buffer; 259bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi status_t err = mGroup->acquire_buffer(&buffer); 260bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (err != OK) { 261bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return err; 262bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 263bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 264bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSizeWithoutHeader = frameSize - ADTS_HEADER_LENGTH; 265677c76347d9aaca4cf3746b3dbfc8a741281066bGlenn Kasten ssize_t readSize = mDataSource->readAt(mOffset + ADTS_HEADER_LENGTH, buffer->data(), 266bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi frameSizeWithoutHeader); 267bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi //SL_LOGV("AacAdtsSource::read() readAt returned %u bytes", readSize); 268bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi if (readSize != (ssize_t)frameSizeWithoutHeader) { 269bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi SL_LOGW("AacAdtsSource::read() readSize != frameSizeWithoutHeader"); 270bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->release(); 271bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer = NULL; 272bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return ERROR_IO; 273bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi } 274bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 275bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->set_range(0, frameSizeWithoutHeader); 276bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->meta_data()->setInt64(kKeyTime, mCurrentTimeUs); 277bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi buffer->meta_data()->setInt32(kKeyIsSyncFrame, 1); 278bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 279bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mOffset += frameSize; 280bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi mCurrentTimeUs += mFrameDurationUs; 281bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 282bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi *out = buffer; 283bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi return OK; 284bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} 285bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi 286bb832e853d4afb11b0a3287b2eb0cad87696d631Jean-Michel Trivi} // namespace android 287