OggExtractor.cpp revision ecaccb9f82dd07b29aa32ce36e8d15862dfdf547
1ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber/* 2ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * Copyright (C) 2010 The Android Open Source Project 3ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * 4ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * you may not use this file except in compliance with the License. 6ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * You may obtain a copy of the License at 7ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * 8ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * 10ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * Unless required by applicable law or agreed to in writing, software 11ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * See the License for the specific language governing permissions and 14ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber * limitations under the License. 15ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber */ 16ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 17ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//#define LOG_NDEBUG 0 18ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#define LOG_TAG "OggExtractor" 19ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <utils/Log.h> 20ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 21ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include "include/OggExtractor.h" 22ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 23ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <cutils/properties.h> 24ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/DataSource.h> 25ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MediaBuffer.h> 26ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MediaBufferGroup.h> 27ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MediaDebug.h> 28ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MediaDefs.h> 29ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MediaErrors.h> 30ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MediaSource.h> 31ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/MetaData.h> 32ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <media/stagefright/Utils.h> 33ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#include <utils/String8.h> 34ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 35ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberextern "C" { 36ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber #include <Tremolo/codec_internal.h> 37ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 38ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb); 39ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb); 40ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb); 41ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 42ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 43ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubernamespace android { 44ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 45ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstruct OggSource : public MediaSource { 46ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber OggSource(const sp<OggExtractor> &extractor); 47ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 48ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber virtual sp<MetaData> getFormat(); 49ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 50ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber virtual status_t start(MetaData *params = NULL); 51ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber virtual status_t stop(); 52ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 53ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber virtual status_t read( 54ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer **buffer, const ReadOptions *options = NULL); 55ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 56ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberprotected: 57ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber virtual ~OggSource(); 58ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 59ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberprivate: 60ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sp<OggExtractor> mExtractor; 61ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber bool mStarted; 62ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 63ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber OggSource(const OggSource &); 64ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber OggSource &operator=(const OggSource &); 65ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber}; 66ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 67ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstruct MyVorbisExtractor { 68ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MyVorbisExtractor(const sp<DataSource> &source); 69ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber virtual ~MyVorbisExtractor(); 70ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 71ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sp<MetaData> getFormat() const; 72ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 73ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // Returns an approximate bitrate in bits per second. 74ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint64_t approxBitrate(); 75ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 76ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t seekToOffset(off_t offset); 77ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t readNextPacket(MediaBuffer **buffer); 78ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 795a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber status_t init(); 80ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 814595be952e3b1d6776a023e3f447c057797f1505Andreas Huber sp<MetaData> getFileMetaData() { return mFileMeta; } 824595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 83ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberprivate: 84ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber struct Page { 85ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint64_t mGranulePosition; 86ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint32_t mSerialNo; 87ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint32_t mPageNo; 88ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t mFlags; 89ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t mNumSegments; 90ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t mLace[255]; 91ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber }; 92ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 93ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sp<DataSource> mSource; 94ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber off_t mOffset; 95ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber Page mCurrentPage; 96ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t mCurrentPageSize; 97ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t mNextLaceIndex; 98ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 9996f52cde23982f668592418a9548045237d5e327Andreas Huber off_t mFirstDataOffset; 10096f52cde23982f668592418a9548045237d5e327Andreas Huber 101ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber vorbis_info mVi; 102ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber vorbis_comment mVc; 103ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 104ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sp<MetaData> mMeta; 1054595be952e3b1d6776a023e3f447c057797f1505Andreas Huber sp<MetaData> mFileMeta; 106ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 107ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t readPage(off_t offset, Page *page); 108ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t findNextPage(off_t startOffset, off_t *pageOffset); 109ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 1105a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber status_t verifyHeader( 111ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *buffer, uint8_t type); 112ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 1134595be952e3b1d6776a023e3f447c057797f1505Andreas Huber void parseFileMetaData(); 1144595be952e3b1d6776a023e3f447c057797f1505Andreas Huber void extractAlbumArt(const void *data, size_t size); 1154595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 116ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MyVorbisExtractor(const MyVorbisExtractor &); 117ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MyVorbisExtractor &operator=(const MyVorbisExtractor &); 118ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber}; 119ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 120ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//////////////////////////////////////////////////////////////////////////////// 121ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 122ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggSource::OggSource(const sp<OggExtractor> &extractor) 123ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber : mExtractor(extractor), 124ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mStarted(false) { 125ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 126ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 127ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggSource::~OggSource() { 128ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mStarted) { 129ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber stop(); 130ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 131ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 132ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 133ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> OggSource::getFormat() { 134ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mExtractor->mImpl->getFormat(); 135ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 136ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 137ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t OggSource::start(MetaData *params) { 138ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mStarted) { 139ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return INVALID_OPERATION; 140ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 141ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 142ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mStarted = true; 143ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 144ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 145ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 146ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 147ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t OggSource::stop() { 148ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mStarted = false; 149ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 150ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 151ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 152ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 153ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t OggSource::read( 154ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer **out, const ReadOptions *options) { 155ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = NULL; 156ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 157ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int64_t seekTimeUs; 158abd1f4f870925d6776dbe4b930b759a1ab6595caAndreas Huber ReadOptions::SeekMode mode; 159abd1f4f870925d6776dbe4b930b759a1ab6595caAndreas Huber if (options && options->getSeekTo(&seekTimeUs, &mode)) { 160ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber off_t pos = seekTimeUs * mExtractor->mImpl->approxBitrate() / 8000000ll; 161ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGI("seeking to offset %ld", pos); 162ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 163ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mExtractor->mImpl->seekToOffset(pos) != OK) { 164ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_END_OF_STREAM; 165ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 166ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 167ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 168ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *packet; 169ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t err = mExtractor->mImpl->readNextPacket(&packet); 170ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 171ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (err != OK) { 172ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return err; 173ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 174ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 175ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#if 0 176ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int64_t timeUs; 177ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (packet->meta_data()->findInt64(kKeyTime, &timeUs)) { 178ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGI("found time = %lld us", timeUs); 179ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } else { 180ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGI("NO time"); 181ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 182ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#endif 183ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 184ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = packet; 185ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 186ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 187ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 188ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 189ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//////////////////////////////////////////////////////////////////////////////// 190ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 191ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberMyVorbisExtractor::MyVorbisExtractor(const sp<DataSource> &source) 192ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber : mSource(source), 193ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mOffset(0), 194ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPageSize(0), 19596f52cde23982f668592418a9548045237d5e327Andreas Huber mNextLaceIndex(0), 19696f52cde23982f668592418a9548045237d5e327Andreas Huber mFirstDataOffset(-1) { 197ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPage.mNumSegments = 0; 1984595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 1994595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_info_init(&mVi); 2004595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_comment_init(&mVc); 201ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 202ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 203ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberMyVorbisExtractor::~MyVorbisExtractor() { 2044595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_comment_clear(&mVc); 2054595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_info_clear(&mVi); 206ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 207ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 208ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> MyVorbisExtractor::getFormat() const { 209ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mMeta; 210ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 211ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 212ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t MyVorbisExtractor::findNextPage( 213ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber off_t startOffset, off_t *pageOffset) { 214ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *pageOffset = startOffset; 215ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 216ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (;;) { 217ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber char signature[4]; 218ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t n = mSource->readAt(*pageOffset, &signature, 4); 219ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 220ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (n < 4) { 221ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *pageOffset = 0; 222ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 223ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return (n < 0) ? n : (status_t)ERROR_END_OF_STREAM; 224ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 225ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 226ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (!memcmp(signature, "OggS", 4)) { 227ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (*pageOffset > startOffset) { 228ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("skipped %ld bytes of junk to reach next frame", 229ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *pageOffset - startOffset); 230ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 231ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 232ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 233ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 234ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 235ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ++*pageOffset; 236ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 237ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 238ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 239ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t MyVorbisExtractor::seekToOffset(off_t offset) { 24096f52cde23982f668592418a9548045237d5e327Andreas Huber if (mFirstDataOffset >= 0 && offset < mFirstDataOffset) { 24196f52cde23982f668592418a9548045237d5e327Andreas Huber // Once we know where the actual audio data starts (past the headers) 24296f52cde23982f668592418a9548045237d5e327Andreas Huber // don't ever seek to anywhere before that. 24396f52cde23982f668592418a9548045237d5e327Andreas Huber offset = mFirstDataOffset; 24496f52cde23982f668592418a9548045237d5e327Andreas Huber } 24596f52cde23982f668592418a9548045237d5e327Andreas Huber 246ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber off_t pageOffset; 247ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t err = findNextPage(offset, &pageOffset); 248ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 249ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (err != OK) { 250ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return err; 251ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 252ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 253ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mOffset = pageOffset; 254ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 255ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPageSize = 0; 256ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPage.mNumSegments = 0; 257ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mNextLaceIndex = 0; 258ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 259ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // XXX what if new page continues packet from last??? 260ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 261ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 262ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 263ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 264ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberssize_t MyVorbisExtractor::readPage(off_t offset, Page *page) { 265ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t header[27]; 266ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mSource->readAt(offset, header, sizeof(header)) 267ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber < (ssize_t)sizeof(header)) { 268ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGE("failed to read %d bytes at offset 0x%08lx", sizeof(header), offset); 269ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 270ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_IO; 271ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 272ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 273ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (memcmp(header, "OggS", 4)) { 274ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_MALFORMED; 275ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 276ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 277ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (header[4] != 0) { 278ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // Wrong version. 279ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 280ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_UNSUPPORTED; 281ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 282ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 283ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mFlags = header[5]; 284ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 285ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (page->mFlags & ~7) { 286ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // Only bits 0-2 are defined in version 0. 287ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_MALFORMED; 288ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 289ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 290ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mGranulePosition = U64LE_AT(&header[6]); 291ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 292ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#if 0 293ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber printf("granulePosition = %llu (0x%llx)\n", 294ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mGranulePosition, page->mGranulePosition); 295ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#endif 296ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 297ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mSerialNo = U32LE_AT(&header[14]); 298ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mPageNo = U32LE_AT(&header[18]); 299ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 300ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mNumSegments = header[26]; 301ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mSource->readAt( 302ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber offset + sizeof(header), page->mLace, page->mNumSegments) 303ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber < (ssize_t)page->mNumSegments) { 304ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_IO; 305ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 306ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 307ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t totalSize = 0;; 308ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t i = 0; i < page->mNumSegments; ++i) { 309ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber totalSize += page->mLace[i]; 310ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 311ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 3125a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber#if 0 313ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber String8 tmp; 314ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t i = 0; i < page->mNumSegments; ++i) { 315ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber char x[32]; 316ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sprintf(x, "%s%u", i > 0 ? ", " : "", (unsigned)page->mLace[i]); 317ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 318ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber tmp.append(x); 319ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 320ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 3215a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber LOGV("%c %s", page->mFlags & 1 ? '+' : ' ', tmp.string()); 3225a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber#endif 323ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 324ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return sizeof(header) + page->mNumSegments + totalSize; 325ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 326ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 327ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t MyVorbisExtractor::readNextPacket(MediaBuffer **out) { 328ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = NULL; 329ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 330ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *buffer = NULL; 331ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int64_t timeUs = -1; 332ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 333ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (;;) { 334ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t i; 335ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t packetSize = 0; 336ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber bool gotFullPacket = false; 337ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (i = mNextLaceIndex; i < mCurrentPage.mNumSegments; ++i) { 338ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t lace = mCurrentPage.mLace[i]; 339ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 340ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packetSize += lace; 341ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 342ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (lace < 255) { 343ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber gotFullPacket = true; 344ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ++i; 345ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 346ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 347ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 348ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 349ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mNextLaceIndex < mCurrentPage.mNumSegments) { 350ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber off_t dataOffset = mOffset + 27 + mCurrentPage.mNumSegments; 351ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t j = 0; j < mNextLaceIndex; ++j) { 352ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber dataOffset += mCurrentPage.mLace[j]; 353ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 354ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 355ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t fullSize = packetSize; 356ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer != NULL) { 357ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber fullSize += buffer->range_length(); 358ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 359ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *tmp = new MediaBuffer(fullSize); 360ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer != NULL) { 361ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber memcpy(tmp->data(), buffer->data(), buffer->range_length()); 362ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber tmp->set_range(0, buffer->range_length()); 363ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->release(); 364ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber } else { 365ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // XXX Not only is this not technically the correct time for 366ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // this packet, we also stamp every packet in this page 367ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // with the same time. This needs fixing later. 368ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber 369ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber if (mVi.rate) { 370ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber // Rate may not have been initialized yet if we're currently 371ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber // reading the configuration packets... 372ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber // Fortunately, the timestamp doesn't matter for those. 373ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber timeUs = mCurrentPage.mGranulePosition * 1000000ll / mVi.rate; 374ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber } 375ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber tmp->set_range(0, 0); 376ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 377ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer = tmp; 378ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 379ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t n = mSource->readAt( 380ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber dataOffset, 381ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber (uint8_t *)buffer->data() + buffer->range_length(), 382ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packetSize); 383ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 384ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (n < (ssize_t)packetSize) { 385ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGE("failed to read %d bytes at 0x%08lx", packetSize, dataOffset); 386ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_IO; 387ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 388ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 389ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->set_range(0, fullSize); 390ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 391ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mNextLaceIndex = i; 392ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 393ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (gotFullPacket) { 394ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // We've just read the entire packet. 395ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 396ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (timeUs >= 0) { 397ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->meta_data()->setInt64(kKeyTime, timeUs); 398ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 399ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 400ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = buffer; 401ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 402ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 403ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 404ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 405ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // fall through, the buffer now contains the start of the packet. 406ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 407ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 408ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber CHECK_EQ(mNextLaceIndex, mCurrentPage.mNumSegments); 409ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 410ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mOffset += mCurrentPageSize; 411ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t n = readPage(mOffset, &mCurrentPage); 412ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 413ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (n <= 0) { 414ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer) { 415ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->release(); 416ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer = NULL; 417ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 418ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 419ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGE("readPage returned %ld", n); 420ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 421ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return n < 0 ? n : (status_t)ERROR_END_OF_STREAM; 422ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 423ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 424ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPageSize = n; 425ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mNextLaceIndex = 0; 426ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 427ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer != NULL) { 428ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if ((mCurrentPage.mFlags & 1) == 0) { 429ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // This page does not continue the packet, i.e. the packet 430ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // is already complete. 431ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 432ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (timeUs >= 0) { 433ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->meta_data()->setInt64(kKeyTime, timeUs); 434ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 435ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 436ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = buffer; 437ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 438ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 439ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 440ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 441ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 442ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 443ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4445a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huberstatus_t MyVorbisExtractor::init() { 445ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta = new MetaData; 446ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_VORBIS); 447ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 448ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *packet; 4495a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber status_t err; 4505a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if ((err = readNextPacket(&packet)) != OK) { 4515a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 4525a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 453ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("read packet of size %d\n", packet->range_length()); 4545a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber err = verifyHeader(packet, 1); 455ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet->release(); 456ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet = NULL; 4575a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (err != OK) { 4585a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 4595a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 460ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4615a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if ((err = readNextPacket(&packet)) != OK) { 4625a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 4635a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 464ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("read packet of size %d\n", packet->range_length()); 4655a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber err = verifyHeader(packet, 3); 466ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet->release(); 467ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet = NULL; 4685a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (err != OK) { 4695a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 4705a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 471ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4725a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if ((err = readNextPacket(&packet)) != OK) { 4735a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 4745a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 475ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("read packet of size %d\n", packet->range_length()); 4765a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber err = verifyHeader(packet, 5); 477ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet->release(); 478ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet = NULL; 4795a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (err != OK) { 4805a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 4815a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 48296f52cde23982f668592418a9548045237d5e327Andreas Huber 48396f52cde23982f668592418a9548045237d5e327Andreas Huber mFirstDataOffset = mOffset + mCurrentPageSize; 4845a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber 4855a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return OK; 486ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 487ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4885a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huberstatus_t MyVorbisExtractor::verifyHeader( 489ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *buffer, uint8_t type) { 490ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber const uint8_t *data = 491ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber (const uint8_t *)buffer->data() + buffer->range_offset(); 492ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 493ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t size = buffer->range_length(); 494ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4955a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (size < 7 || data[0] != type || memcmp(&data[1], "vorbis", 6)) { 4965a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return ERROR_MALFORMED; 4975a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 498ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 499ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ogg_buffer buf; 500ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.data = (uint8_t *)data; 501ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.size = size; 502ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.refcount = 1; 503ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.ptr.owner = NULL; 504ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 505ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ogg_reference ref; 506ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.buffer = &buf; 507ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.begin = 0; 508ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.length = size; 509ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.next = NULL; 510ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 511ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber oggpack_buffer bits; 512ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber oggpack_readinit(&bits, &ref); 513ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 514ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber CHECK_EQ(oggpack_read(&bits, 8), type); 515ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t i = 0; i < 6; ++i) { 516ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber oggpack_read(&bits, 8); // skip 'vorbis' 517ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 518ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 519ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber switch (type) { 520ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber case 1: 521ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber { 522ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber CHECK_EQ(0, _vorbis_unpack_info(&mVi, &bits)); 523ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 524ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setData(kKeyVorbisInfo, 0, data, size); 525ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setInt32(kKeySampleRate, mVi.rate); 526ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setInt32(kKeyChannelCount, mVi.channels); 527ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 528ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("lower-bitrate = %ld", mVi.bitrate_lower); 529ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("upper-bitrate = %ld", mVi.bitrate_upper); 530ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("nominal-bitrate = %ld", mVi.bitrate_nominal); 531ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("window-bitrate = %ld", mVi.bitrate_window); 532ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 533ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber off_t size; 534ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mSource->getSize(&size) == OK) { 535ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint64_t bps = approxBitrate(); 536ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 537ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setInt64(kKeyDuration, size * 8000000ll / bps); 538ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 539ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 540ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 541ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 542ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber case 3: 543ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber { 5445a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (0 != _vorbis_unpack_comment(&mVc, &bits)) { 5455a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return ERROR_MALFORMED; 5465a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 5474595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 5484595be952e3b1d6776a023e3f447c057797f1505Andreas Huber parseFileMetaData(); 549ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 550ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 551ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 552ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber case 5: 553ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber { 5545a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (0 != _vorbis_unpack_books(&mVi, &bits)) { 5555a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return ERROR_MALFORMED; 5565a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 557ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 558ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setData(kKeyVorbisBooks, 0, data, size); 559ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 560ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 561ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 5625a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber 5635a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return OK; 564ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 565ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 566ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberuint64_t MyVorbisExtractor::approxBitrate() { 567ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mVi.bitrate_nominal != 0) { 568ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mVi.bitrate_nominal; 569ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 570ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 571ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return (mVi.bitrate_lower + mVi.bitrate_upper) / 2; 572ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 573ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 5744595be952e3b1d6776a023e3f447c057797f1505Andreas Hubervoid MyVorbisExtractor::parseFileMetaData() { 5754595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta = new MetaData; 5764595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_CONTAINER_OGG); 5774595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 5784595be952e3b1d6776a023e3f447c057797f1505Andreas Huber struct { 5794595be952e3b1d6776a023e3f447c057797f1505Andreas Huber const char *const mTag; 5804595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t mKey; 5814595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } kMap[] = { 5824595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "TITLE", kKeyTitle }, 5834595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "ARTIST", kKeyArtist }, 5844595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "ALBUM", kKeyAlbum }, 5854595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "COMPOSER", kKeyComposer }, 5864595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "GENRE", kKeyGenre }, 5874595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "AUTHOR", kKeyAuthor }, 5884595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "TRACKNUMBER", kKeyCDTrackNumber }, 5894595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "DISCNUMBER", kKeyDiscNumber }, 5904595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "DATE", kKeyDate }, 5914595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "LYRICIST", kKeyWriter }, 5924595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "METADATA_BLOCK_PICTURE", kKeyAlbumArt }, 5934595be952e3b1d6776a023e3f447c057797f1505Andreas Huber }; 5944595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 5954595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (int i = 0; i < mVc.comments; ++i) { 5964595be952e3b1d6776a023e3f447c057797f1505Andreas Huber const char *comment = mVc.user_comments[i]; 5974595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 5984595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (size_t j = 0; j < sizeof(kMap) / sizeof(kMap[0]); ++j) { 5994595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t tagLen = strlen(kMap[j].mTag); 6004595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (!strncasecmp(kMap[j].mTag, comment, tagLen) 6014595be952e3b1d6776a023e3f447c057797f1505Andreas Huber && comment[tagLen] == '=') { 6024595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (kMap[j].mKey == kKeyAlbumArt) { 6034595be952e3b1d6776a023e3f447c057797f1505Andreas Huber extractAlbumArt( 6044595be952e3b1d6776a023e3f447c057797f1505Andreas Huber &comment[tagLen + 1], 6054595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mVc.comment_lengths[i] - tagLen - 1); 6064595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else { 6074595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setCString(kMap[j].mKey, &comment[tagLen + 1]); 6084595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6094595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6104595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6114595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6124595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6134595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6144595be952e3b1d6776a023e3f447c057797f1505Andreas Huber#if 0 6154595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (int i = 0; i < mVc.comments; ++i) { 6164595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGI("comment #%d: '%s'", i + 1, mVc.user_comments[i]); 6174595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6184595be952e3b1d6776a023e3f447c057797f1505Andreas Huber#endif 6194595be952e3b1d6776a023e3f447c057797f1505Andreas Huber} 6204595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6214595be952e3b1d6776a023e3f447c057797f1505Andreas Huber// The returned buffer should be free()d. 6224595be952e3b1d6776a023e3f447c057797f1505Andreas Huberstatic uint8_t *DecodeBase64(const char *s, size_t size, size_t *outSize) { 6234595be952e3b1d6776a023e3f447c057797f1505Andreas Huber *outSize = 0; 6244595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6254595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if ((size % 4) != 0) { 6264595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return NULL; 6274595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6284595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6294595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t n = size; 6304595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t padding = 0; 6314595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (n >= 1 && s[n - 1] == '=') { 6324595be952e3b1d6776a023e3f447c057797f1505Andreas Huber padding = 1; 6334595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6344595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (n >= 2 && s[n - 2] == '=') { 6354595be952e3b1d6776a023e3f447c057797f1505Andreas Huber padding = 2; 6364595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6374595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6384595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6394595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t outLen = 3 * size / 4 - padding; 6404595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6414595be952e3b1d6776a023e3f447c057797f1505Andreas Huber *outSize = outLen; 6424595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6434595be952e3b1d6776a023e3f447c057797f1505Andreas Huber void *buffer = malloc(outLen); 6444595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6454595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint8_t *out = (uint8_t *)buffer; 6464595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t j = 0; 6474595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t accum = 0; 6484595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (size_t i = 0; i < n; ++i) { 6494595be952e3b1d6776a023e3f447c057797f1505Andreas Huber char c = s[i]; 6504595be952e3b1d6776a023e3f447c057797f1505Andreas Huber unsigned value; 6514595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (c >= 'A' && c <= 'Z') { 6524595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = c - 'A'; 6534595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c >= 'a' && c <= 'z') { 6544595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 26 + c - 'a'; 6554595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c >= '0' && c <= '9') { 6564595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 52 + c - '0'; 6574595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c == '+') { 6584595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 62; 6594595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c == '/') { 6604595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 63; 6614595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c != '=') { 6624595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return NULL; 6634595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else { 6644595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (i < n - padding) { 6654595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return NULL; 6664595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6674595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6684595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 0; 6694595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6704595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6714595be952e3b1d6776a023e3f447c057797f1505Andreas Huber accum = (accum << 6) | value; 6724595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6734595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (((i + 1) % 4) == 0) { 6744595be952e3b1d6776a023e3f447c057797f1505Andreas Huber out[j++] = (accum >> 16); 6754595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6764595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (j < outLen) { out[j++] = (accum >> 8) & 0xff; } 6774595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (j < outLen) { out[j++] = accum & 0xff; } 6784595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6794595be952e3b1d6776a023e3f447c057797f1505Andreas Huber accum = 0; 6804595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6814595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6824595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6834595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return (uint8_t *)buffer; 6844595be952e3b1d6776a023e3f447c057797f1505Andreas Huber} 6854595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6864595be952e3b1d6776a023e3f447c057797f1505Andreas Hubervoid MyVorbisExtractor::extractAlbumArt(const void *data, size_t size) { 6874595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("extractAlbumArt from '%s'", (const char *)data); 6884595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6894595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t flacSize; 6904595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint8_t *flac = DecodeBase64((const char *)data, size, &flacSize); 6914595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6924595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flac == NULL) { 6934595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGE("malformed base64 encoded data."); 6944595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return; 6954595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6964595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6974595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("got flac of size %d", flacSize); 6984595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6994595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t picType; 7004595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t typeLen; 7014595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t descLen; 7024595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t dataLen; 7034595be952e3b1d6776a023e3f447c057797f1505Andreas Huber char type[128]; 7044595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7054595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 8) { 7064595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7074595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7084595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7094595be952e3b1d6776a023e3f447c057797f1505Andreas Huber picType = U32_AT(flac); 7104595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7114595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (picType != 3) { 7124595be952e3b1d6776a023e3f447c057797f1505Andreas Huber // This is not a front cover. 7134595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7144595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7154595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7164595be952e3b1d6776a023e3f447c057797f1505Andreas Huber typeLen = U32_AT(&flac[4]); 7174595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (typeLen + 1 > sizeof(type)) { 7184595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7194595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7204595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7214595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 8 + typeLen) { 7224595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7234595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7244595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7254595be952e3b1d6776a023e3f447c057797f1505Andreas Huber memcpy(type, &flac[8], typeLen); 7264595be952e3b1d6776a023e3f447c057797f1505Andreas Huber type[typeLen] = '\0'; 7274595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7284595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("picType = %d, type = '%s'", picType, type); 7294595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7304595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (!strcmp(type, "-->")) { 7314595be952e3b1d6776a023e3f447c057797f1505Andreas Huber // This is not inline cover art, but an external url instead. 7324595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7334595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7344595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7354595be952e3b1d6776a023e3f447c057797f1505Andreas Huber descLen = U32_AT(&flac[8 + typeLen]); 7364595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7374595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 32 + typeLen + descLen) { 7384595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7394595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7404595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7414595be952e3b1d6776a023e3f447c057797f1505Andreas Huber dataLen = U32_AT(&flac[8 + typeLen + 4 + descLen + 16]); 7424595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7434595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 32 + typeLen + descLen + dataLen) { 7444595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7454595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7464595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7474595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("got image data, %d trailing bytes", 7484595be952e3b1d6776a023e3f447c057797f1505Andreas Huber flacSize - 32 - typeLen - descLen - dataLen); 7494595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7504595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setData( 7514595be952e3b1d6776a023e3f447c057797f1505Andreas Huber kKeyAlbumArt, 0, &flac[8 + typeLen + 4 + descLen + 20], dataLen); 7524595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7534595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setCString(kKeyAlbumArtMIME, type); 7544595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7554595be952e3b1d6776a023e3f447c057797f1505Andreas Huberexit: 7564595be952e3b1d6776a023e3f447c057797f1505Andreas Huber free(flac); 7574595be952e3b1d6776a023e3f447c057797f1505Andreas Huber flac = NULL; 7584595be952e3b1d6776a023e3f447c057797f1505Andreas Huber} 7594595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 760ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//////////////////////////////////////////////////////////////////////////////// 761ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 762ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggExtractor::OggExtractor(const sp<DataSource> &source) 763ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber : mDataSource(source), 764ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mInitCheck(NO_INIT), 765ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mImpl(NULL) { 766ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mImpl = new MyVorbisExtractor(mDataSource); 7675a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber mInitCheck = mImpl->seekToOffset(0); 768ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 7695a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (mInitCheck == OK) { 7705a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber mInitCheck = mImpl->init(); 7715a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 772ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 773ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 774ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggExtractor::~OggExtractor() { 775ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber delete mImpl; 776ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mImpl = NULL; 777ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 778ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 779ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersize_t OggExtractor::countTracks() { 780ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mInitCheck != OK ? 0 : 1; 781ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 782ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 783ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MediaSource> OggExtractor::getTrack(size_t index) { 784ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (index >= 1) { 785ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return NULL; 786ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 787ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 788ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return new OggSource(this); 789ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 790ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 791ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> OggExtractor::getTrackMetaData( 792ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t index, uint32_t flags) { 793ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (index >= 1) { 794ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return NULL; 795ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 796ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 797ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mImpl->getFormat(); 798ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 799ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 800ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> OggExtractor::getMetaData() { 8014595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return mImpl->getFileMetaData(); 802ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 803ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 804ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberbool SniffOgg( 805ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber const sp<DataSource> &source, String8 *mimeType, float *confidence) { 806ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber char tmp[4]; 807ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (source->readAt(0, tmp, 4) < 4 || memcmp(tmp, "OggS", 4)) { 808ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return false; 809ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 810ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 811ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mimeType->setTo(MEDIA_MIMETYPE_CONTAINER_OGG); 812ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *confidence = 0.2f; 813ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 814ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return true; 815ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 816ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 817ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} // namespace android 818