OggExtractor.cpp revision c7fc37a3dab9bd1f96713649f351b5990e6316ff
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 76c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong status_t seekToOffset(off64_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; 94c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t mOffset; 95ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber Page mCurrentPage; 96db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber uint64_t mPrevGranulePosition; 97ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t mCurrentPageSize; 98db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber bool mFirstPacketInPage; 99db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber uint64_t mCurrentPageSamples; 100ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t mNextLaceIndex; 101ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 102c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t mFirstDataOffset; 10396f52cde23982f668592418a9548045237d5e327Andreas Huber 104ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber vorbis_info mVi; 105ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber vorbis_comment mVc; 106ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 107ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sp<MetaData> mMeta; 1084595be952e3b1d6776a023e3f447c057797f1505Andreas Huber sp<MetaData> mFileMeta; 109ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 110c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong ssize_t readPage(off64_t offset, Page *page); 111c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong status_t findNextPage(off64_t startOffset, off64_t *pageOffset); 112ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 1135a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber status_t verifyHeader( 114ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *buffer, uint8_t type); 115ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 1164595be952e3b1d6776a023e3f447c057797f1505Andreas Huber void parseFileMetaData(); 1174595be952e3b1d6776a023e3f447c057797f1505Andreas Huber void extractAlbumArt(const void *data, size_t size); 1184595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 119c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong uint64_t findPrevGranulePosition(off64_t pageOffset); 120db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 121ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MyVorbisExtractor(const MyVorbisExtractor &); 122ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MyVorbisExtractor &operator=(const MyVorbisExtractor &); 123ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber}; 124ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 125ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//////////////////////////////////////////////////////////////////////////////// 126ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 127ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggSource::OggSource(const sp<OggExtractor> &extractor) 128ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber : mExtractor(extractor), 129ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mStarted(false) { 130ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 131ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 132ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggSource::~OggSource() { 133ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mStarted) { 134ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber stop(); 135ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 136ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 137ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 138ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> OggSource::getFormat() { 139ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mExtractor->mImpl->getFormat(); 140ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 141ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 142ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t OggSource::start(MetaData *params) { 143ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mStarted) { 144ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return INVALID_OPERATION; 145ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 146ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 147ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mStarted = true; 148ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 149ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 150ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 151ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 152ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t OggSource::stop() { 153ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mStarted = false; 154ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 155ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 156ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 157ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 158ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t OggSource::read( 159ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer **out, const ReadOptions *options) { 160ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = NULL; 161ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 162ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int64_t seekTimeUs; 163abd1f4f870925d6776dbe4b930b759a1ab6595caAndreas Huber ReadOptions::SeekMode mode; 164abd1f4f870925d6776dbe4b930b759a1ab6595caAndreas Huber if (options && options->getSeekTo(&seekTimeUs, &mode)) { 165c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t pos = seekTimeUs * mExtractor->mImpl->approxBitrate() / 8000000ll; 1663e8843e8db702c8c9c97df2b4a31b66ea12961e6Andreas Huber LOGV("seeking to offset %ld", pos); 167ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 168ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mExtractor->mImpl->seekToOffset(pos) != OK) { 169ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_END_OF_STREAM; 170ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 171ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 172ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 173ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *packet; 174ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t err = mExtractor->mImpl->readNextPacket(&packet); 175ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 176ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (err != OK) { 177ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return err; 178ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 179ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 180ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#if 0 181ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int64_t timeUs; 182ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (packet->meta_data()->findInt64(kKeyTime, &timeUs)) { 183ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGI("found time = %lld us", timeUs); 184ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } else { 185ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGI("NO time"); 186ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 187ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#endif 188ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 1898bf59e735760af0b6a85747fd90bf8cf1e5388d7Andreas Huber packet->meta_data()->setInt32(kKeyIsSyncFrame, 1); 1908bf59e735760af0b6a85747fd90bf8cf1e5388d7Andreas Huber 191ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = packet; 192ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 193ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 194ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 195ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 196ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//////////////////////////////////////////////////////////////////////////////// 197ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 198ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberMyVorbisExtractor::MyVorbisExtractor(const sp<DataSource> &source) 199ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber : mSource(source), 200ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mOffset(0), 201db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mPrevGranulePosition(0), 202ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPageSize(0), 203db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mFirstPacketInPage(true), 204db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mCurrentPageSamples(0), 20596f52cde23982f668592418a9548045237d5e327Andreas Huber mNextLaceIndex(0), 20696f52cde23982f668592418a9548045237d5e327Andreas Huber mFirstDataOffset(-1) { 207ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPage.mNumSegments = 0; 2084595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 2094595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_info_init(&mVi); 2104595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_comment_init(&mVc); 211ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 212ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 213ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberMyVorbisExtractor::~MyVorbisExtractor() { 2144595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_comment_clear(&mVc); 2154595be952e3b1d6776a023e3f447c057797f1505Andreas Huber vorbis_info_clear(&mVi); 216ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 217ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 218ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> MyVorbisExtractor::getFormat() const { 219ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mMeta; 220ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 221ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 222ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t MyVorbisExtractor::findNextPage( 223c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t startOffset, off64_t *pageOffset) { 224ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *pageOffset = startOffset; 225ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 226ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (;;) { 227ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber char signature[4]; 228ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t n = mSource->readAt(*pageOffset, &signature, 4); 229ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 230ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (n < 4) { 231ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *pageOffset = 0; 232ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 233ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return (n < 0) ? n : (status_t)ERROR_END_OF_STREAM; 234ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 235ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 236ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (!memcmp(signature, "OggS", 4)) { 237ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (*pageOffset > startOffset) { 238ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("skipped %ld bytes of junk to reach next frame", 239ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *pageOffset - startOffset); 240ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 241ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 242ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 243ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 244ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 245ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ++*pageOffset; 246ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 247ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 248ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 249db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber// Given the offset of the "current" page, find the page immediately preceding 250db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber// it (if any) and return its granule position. 251db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber// To do this we back up from the "current" page's offset until we find any 252db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber// page preceding it and then scan forward to just before the current page. 253c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Donguint64_t MyVorbisExtractor::findPrevGranulePosition(off64_t pageOffset) { 254c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t prevPageOffset = 0; 255c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t prevGuess = pageOffset; 256db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber for (;;) { 257db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber if (prevGuess >= 5000) { 258db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber prevGuess -= 5000; 259db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } else { 260db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber prevGuess = 0; 261db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 262db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 263db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber LOGV("backing up %ld bytes", pageOffset - prevGuess); 264db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 265db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber CHECK_EQ(findNextPage(prevGuess, &prevPageOffset), (status_t)OK); 266db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 267db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber if (prevPageOffset < pageOffset || prevGuess == 0) { 268db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber break; 269db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 270db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 271db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 272db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber if (prevPageOffset == pageOffset) { 273db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber // We did not find a page preceding this one. 274db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber return 0; 275db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 276db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 277db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber LOGV("prevPageOffset at %ld, pageOffset at %ld", prevPageOffset, pageOffset); 278db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 279db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber for (;;) { 280db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber Page prevPage; 281db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber ssize_t n = readPage(prevPageOffset, &prevPage); 282db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 283db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber if (n <= 0) { 284db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber return 0; 285db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 286db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 287db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber prevPageOffset += n; 288db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 289db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber if (prevPageOffset == pageOffset) { 290db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber return prevPage.mGranulePosition; 291db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 292db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 293db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber} 294db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 295c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dongstatus_t MyVorbisExtractor::seekToOffset(off64_t offset) { 29696f52cde23982f668592418a9548045237d5e327Andreas Huber if (mFirstDataOffset >= 0 && offset < mFirstDataOffset) { 29796f52cde23982f668592418a9548045237d5e327Andreas Huber // Once we know where the actual audio data starts (past the headers) 29896f52cde23982f668592418a9548045237d5e327Andreas Huber // don't ever seek to anywhere before that. 29996f52cde23982f668592418a9548045237d5e327Andreas Huber offset = mFirstDataOffset; 30096f52cde23982f668592418a9548045237d5e327Andreas Huber } 30196f52cde23982f668592418a9548045237d5e327Andreas Huber 302c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t pageOffset; 303ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber status_t err = findNextPage(offset, &pageOffset); 304ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 305ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (err != OK) { 306ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return err; 307ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 308ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 309db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber // We found the page we wanted to seek to, but we'll also need 310db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber // the page preceding it to determine how many valid samples are on 311db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber // this page. 312db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mPrevGranulePosition = findPrevGranulePosition(pageOffset); 313db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 314ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mOffset = pageOffset; 315ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 316ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPageSize = 0; 317db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mFirstPacketInPage = true; 318db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mCurrentPageSamples = 0; 319ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPage.mNumSegments = 0; 320ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mNextLaceIndex = 0; 321ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 322ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // XXX what if new page continues packet from last??? 323ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 324ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 325ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 326ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 327c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dongssize_t MyVorbisExtractor::readPage(off64_t offset, Page *page) { 328ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t header[27]; 329ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mSource->readAt(offset, header, sizeof(header)) 330ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber < (ssize_t)sizeof(header)) { 3313e8843e8db702c8c9c97df2b4a31b66ea12961e6Andreas Huber LOGV("failed to read %d bytes at offset 0x%08lx", sizeof(header), offset); 332ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 333ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_IO; 334ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 335ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 336ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (memcmp(header, "OggS", 4)) { 337ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_MALFORMED; 338ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 339ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 340ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (header[4] != 0) { 341ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // Wrong version. 342ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 343ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_UNSUPPORTED; 344ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 345ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 346ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mFlags = header[5]; 347ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 348ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (page->mFlags & ~7) { 349ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // Only bits 0-2 are defined in version 0. 350ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_MALFORMED; 351ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 352ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 353ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mGranulePosition = U64LE_AT(&header[6]); 354ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 355ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#if 0 356ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber printf("granulePosition = %llu (0x%llx)\n", 357ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mGranulePosition, page->mGranulePosition); 358ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber#endif 359ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 360ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mSerialNo = U32LE_AT(&header[14]); 361ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mPageNo = U32LE_AT(&header[18]); 362ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 363ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber page->mNumSegments = header[26]; 364ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mSource->readAt( 365ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber offset + sizeof(header), page->mLace, page->mNumSegments) 366ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber < (ssize_t)page->mNumSegments) { 367ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_IO; 368ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 369ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 370ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t totalSize = 0;; 371ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t i = 0; i < page->mNumSegments; ++i) { 372ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber totalSize += page->mLace[i]; 373ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 374ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 3755a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber#if 0 376ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber String8 tmp; 377ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t i = 0; i < page->mNumSegments; ++i) { 378ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber char x[32]; 379ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber sprintf(x, "%s%u", i > 0 ? ", " : "", (unsigned)page->mLace[i]); 380ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 381ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber tmp.append(x); 382ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 383ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 3845a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber LOGV("%c %s", page->mFlags & 1 ? '+' : ' ', tmp.string()); 3855a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber#endif 386ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 387ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return sizeof(header) + page->mNumSegments + totalSize; 388ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 389ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 390ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberstatus_t MyVorbisExtractor::readNextPacket(MediaBuffer **out) { 391ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = NULL; 392ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 393ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *buffer = NULL; 394ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber int64_t timeUs = -1; 395ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 396ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (;;) { 397ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t i; 398ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t packetSize = 0; 399ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber bool gotFullPacket = false; 400ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (i = mNextLaceIndex; i < mCurrentPage.mNumSegments; ++i) { 401ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint8_t lace = mCurrentPage.mLace[i]; 402ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 403ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packetSize += lace; 404ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 405ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (lace < 255) { 406ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber gotFullPacket = true; 407ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ++i; 408ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 409ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 410ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 411ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 412ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mNextLaceIndex < mCurrentPage.mNumSegments) { 413c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t dataOffset = mOffset + 27 + mCurrentPage.mNumSegments; 414ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t j = 0; j < mNextLaceIndex; ++j) { 415ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber dataOffset += mCurrentPage.mLace[j]; 416ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 417ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 418ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t fullSize = packetSize; 419ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer != NULL) { 420ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber fullSize += buffer->range_length(); 421ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 422ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *tmp = new MediaBuffer(fullSize); 423ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer != NULL) { 424ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber memcpy(tmp->data(), buffer->data(), buffer->range_length()); 425ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber tmp->set_range(0, buffer->range_length()); 426ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->release(); 427ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber } else { 428ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // XXX Not only is this not technically the correct time for 429ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // this packet, we also stamp every packet in this page 430ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // with the same time. This needs fixing later. 431ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber 432ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber if (mVi.rate) { 433ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber // Rate may not have been initialized yet if we're currently 434ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber // reading the configuration packets... 435ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber // Fortunately, the timestamp doesn't matter for those. 436ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber timeUs = mCurrentPage.mGranulePosition * 1000000ll / mVi.rate; 437ecaccb9f82dd07b29aa32ce36e8d15862dfdf547Andreas Huber } 438ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber tmp->set_range(0, 0); 439ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 440ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer = tmp; 441ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 442ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t n = mSource->readAt( 443ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber dataOffset, 444ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber (uint8_t *)buffer->data() + buffer->range_length(), 445ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packetSize); 446ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 447ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (n < (ssize_t)packetSize) { 4483e8843e8db702c8c9c97df2b4a31b66ea12961e6Andreas Huber LOGV("failed to read %d bytes at 0x%08lx", packetSize, dataOffset); 449ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ERROR_IO; 450ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 451ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 452ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->set_range(0, fullSize); 453ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 454ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mNextLaceIndex = i; 455ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 456ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (gotFullPacket) { 457ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // We've just read the entire packet. 458ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 459ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (timeUs >= 0) { 460ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->meta_data()->setInt64(kKeyTime, timeUs); 461ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 462ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 463db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber if (mFirstPacketInPage) { 464db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber buffer->meta_data()->setInt32( 465db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber kKeyValidSamples, mCurrentPageSamples); 466db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mFirstPacketInPage = false; 467db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber } 468db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 469ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = buffer; 470ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 471ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 472ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 473ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 474ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // fall through, the buffer now contains the start of the packet. 475ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 476ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 477ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber CHECK_EQ(mNextLaceIndex, mCurrentPage.mNumSegments); 478ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 479ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mOffset += mCurrentPageSize; 480ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ssize_t n = readPage(mOffset, &mCurrentPage); 481ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 482ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (n <= 0) { 483ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer) { 484ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->release(); 485ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer = NULL; 486ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 487ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4883e8843e8db702c8c9c97df2b4a31b66ea12961e6Andreas Huber LOGV("readPage returned %ld", n); 489ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 490ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return n < 0 ? n : (status_t)ERROR_END_OF_STREAM; 491ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 492ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 493db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mCurrentPageSamples = 494db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mCurrentPage.mGranulePosition - mPrevGranulePosition; 495db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mFirstPacketInPage = true; 496db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 497db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mPrevGranulePosition = mCurrentPage.mGranulePosition; 498db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 499ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mCurrentPageSize = n; 500ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mNextLaceIndex = 0; 501ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 502ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (buffer != NULL) { 503ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if ((mCurrentPage.mFlags & 1) == 0) { 504ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // This page does not continue the packet, i.e. the packet 505ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber // is already complete. 506ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 507ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (timeUs >= 0) { 508ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buffer->meta_data()->setInt64(kKeyTime, timeUs); 509ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 510ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 511db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber buffer->meta_data()->setInt32( 512db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber kKeyValidSamples, mCurrentPageSamples); 513db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber mFirstPacketInPage = false; 514db6222212528637d8f2afa7f49fc3c8c915bafbeAndreas Huber 515ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *out = buffer; 516ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 517ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return OK; 518ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 519ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 520ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 521ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 522ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 5235a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huberstatus_t MyVorbisExtractor::init() { 524ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta = new MetaData; 525ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_VORBIS); 526ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 527ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *packet; 5285a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber status_t err; 5295a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if ((err = readNextPacket(&packet)) != OK) { 5305a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 5315a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 532ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("read packet of size %d\n", packet->range_length()); 5335a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber err = verifyHeader(packet, 1); 534ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet->release(); 535ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet = NULL; 5365a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (err != OK) { 5375a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 5385a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 539ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 5405a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if ((err = readNextPacket(&packet)) != OK) { 5415a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 5425a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 543ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("read packet of size %d\n", packet->range_length()); 5445a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber err = verifyHeader(packet, 3); 545ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet->release(); 546ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet = NULL; 5475a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (err != OK) { 5485a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 5495a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 550ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 5515a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if ((err = readNextPacket(&packet)) != OK) { 5525a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 5535a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 554ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("read packet of size %d\n", packet->range_length()); 5555a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber err = verifyHeader(packet, 5); 556ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet->release(); 557ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber packet = NULL; 5585a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (err != OK) { 5595a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return err; 5605a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 56196f52cde23982f668592418a9548045237d5e327Andreas Huber 56296f52cde23982f668592418a9548045237d5e327Andreas Huber mFirstDataOffset = mOffset + mCurrentPageSize; 5635a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber 5645a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return OK; 565ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 566ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 5675a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huberstatus_t MyVorbisExtractor::verifyHeader( 568ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber MediaBuffer *buffer, uint8_t type) { 569ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber const uint8_t *data = 570ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber (const uint8_t *)buffer->data() + buffer->range_offset(); 571ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 572ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t size = buffer->range_length(); 573ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 5745a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (size < 7 || data[0] != type || memcmp(&data[1], "vorbis", 6)) { 5755a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return ERROR_MALFORMED; 5765a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 577ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 578ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ogg_buffer buf; 579ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.data = (uint8_t *)data; 580ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.size = size; 581ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.refcount = 1; 582ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber buf.ptr.owner = NULL; 583ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 584ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ogg_reference ref; 585ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.buffer = &buf; 586ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.begin = 0; 587ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.length = size; 588ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber ref.next = NULL; 589ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 590ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber oggpack_buffer bits; 591ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber oggpack_readinit(&bits, &ref); 592ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 593ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber CHECK_EQ(oggpack_read(&bits, 8), type); 594ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber for (size_t i = 0; i < 6; ++i) { 595ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber oggpack_read(&bits, 8); // skip 'vorbis' 596ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 597ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 598ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber switch (type) { 599ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber case 1: 600ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber { 601ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber CHECK_EQ(0, _vorbis_unpack_info(&mVi, &bits)); 602ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 603ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setData(kKeyVorbisInfo, 0, data, size); 604ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setInt32(kKeySampleRate, mVi.rate); 605ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setInt32(kKeyChannelCount, mVi.channels); 606ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 607ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("lower-bitrate = %ld", mVi.bitrate_lower); 608ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("upper-bitrate = %ld", mVi.bitrate_upper); 609ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("nominal-bitrate = %ld", mVi.bitrate_nominal); 610ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber LOGV("window-bitrate = %ld", mVi.bitrate_window); 611ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 612c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t size; 613ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mSource->getSize(&size) == OK) { 614ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber uint64_t bps = approxBitrate(); 615ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 616ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setInt64(kKeyDuration, size * 8000000ll / bps); 617ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 618ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 619ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 620ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 621ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber case 3: 622ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber { 6235a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (0 != _vorbis_unpack_comment(&mVc, &bits)) { 6245a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return ERROR_MALFORMED; 6255a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 6264595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6274595be952e3b1d6776a023e3f447c057797f1505Andreas Huber parseFileMetaData(); 628ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 629ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 630ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 631ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber case 5: 632ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber { 6335a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (0 != _vorbis_unpack_books(&mVi, &bits)) { 6345a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return ERROR_MALFORMED; 6355a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 636ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 637ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mMeta->setData(kKeyVorbisBooks, 0, data, size); 638ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber break; 639ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 640ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 6415a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber 6425a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber return OK; 643ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 644ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 645ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberuint64_t MyVorbisExtractor::approxBitrate() { 646ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (mVi.bitrate_nominal != 0) { 647ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mVi.bitrate_nominal; 648ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 649ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 650ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return (mVi.bitrate_lower + mVi.bitrate_upper) / 2; 651ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 652ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 6534595be952e3b1d6776a023e3f447c057797f1505Andreas Hubervoid MyVorbisExtractor::parseFileMetaData() { 6544595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta = new MetaData; 6554595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_CONTAINER_OGG); 6564595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6574595be952e3b1d6776a023e3f447c057797f1505Andreas Huber struct { 6584595be952e3b1d6776a023e3f447c057797f1505Andreas Huber const char *const mTag; 6594595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t mKey; 6604595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } kMap[] = { 6614595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "TITLE", kKeyTitle }, 6624595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "ARTIST", kKeyArtist }, 6634595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "ALBUM", kKeyAlbum }, 6644595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "COMPOSER", kKeyComposer }, 6654595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "GENRE", kKeyGenre }, 6664595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "AUTHOR", kKeyAuthor }, 6674595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "TRACKNUMBER", kKeyCDTrackNumber }, 6684595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "DISCNUMBER", kKeyDiscNumber }, 6694595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "DATE", kKeyDate }, 6704595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "LYRICIST", kKeyWriter }, 6714595be952e3b1d6776a023e3f447c057797f1505Andreas Huber { "METADATA_BLOCK_PICTURE", kKeyAlbumArt }, 6728ae49d87b98d57d6758b0c51b95e28a6581a79f1Andreas Huber { "ANDROID_LOOP", kKeyAutoLoop }, 6734595be952e3b1d6776a023e3f447c057797f1505Andreas Huber }; 6744595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6754595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (int i = 0; i < mVc.comments; ++i) { 6764595be952e3b1d6776a023e3f447c057797f1505Andreas Huber const char *comment = mVc.user_comments[i]; 6774595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6784595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (size_t j = 0; j < sizeof(kMap) / sizeof(kMap[0]); ++j) { 6794595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t tagLen = strlen(kMap[j].mTag); 6804595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (!strncasecmp(kMap[j].mTag, comment, tagLen) 6814595be952e3b1d6776a023e3f447c057797f1505Andreas Huber && comment[tagLen] == '=') { 6824595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (kMap[j].mKey == kKeyAlbumArt) { 6834595be952e3b1d6776a023e3f447c057797f1505Andreas Huber extractAlbumArt( 6844595be952e3b1d6776a023e3f447c057797f1505Andreas Huber &comment[tagLen + 1], 6854595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mVc.comment_lengths[i] - tagLen - 1); 6868ae49d87b98d57d6758b0c51b95e28a6581a79f1Andreas Huber } else if (kMap[j].mKey == kKeyAutoLoop) { 6878ae49d87b98d57d6758b0c51b95e28a6581a79f1Andreas Huber if (!strcasecmp(&comment[tagLen + 1], "true")) { 6888ae49d87b98d57d6758b0c51b95e28a6581a79f1Andreas Huber mFileMeta->setInt32(kKeyAutoLoop, true); 6898ae49d87b98d57d6758b0c51b95e28a6581a79f1Andreas Huber } 6904595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else { 6914595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setCString(kMap[j].mKey, &comment[tagLen + 1]); 6924595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6934595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6944595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6954595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 6964595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 6974595be952e3b1d6776a023e3f447c057797f1505Andreas Huber#if 0 6984595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (int i = 0; i < mVc.comments; ++i) { 6994595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGI("comment #%d: '%s'", i + 1, mVc.user_comments[i]); 7004595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7014595be952e3b1d6776a023e3f447c057797f1505Andreas Huber#endif 7024595be952e3b1d6776a023e3f447c057797f1505Andreas Huber} 7034595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7044595be952e3b1d6776a023e3f447c057797f1505Andreas Huber// The returned buffer should be free()d. 7054595be952e3b1d6776a023e3f447c057797f1505Andreas Huberstatic uint8_t *DecodeBase64(const char *s, size_t size, size_t *outSize) { 7064595be952e3b1d6776a023e3f447c057797f1505Andreas Huber *outSize = 0; 7074595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7084595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if ((size % 4) != 0) { 7094595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return NULL; 7104595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7114595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7124595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t n = size; 7134595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t padding = 0; 7144595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (n >= 1 && s[n - 1] == '=') { 7154595be952e3b1d6776a023e3f447c057797f1505Andreas Huber padding = 1; 7164595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7174595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (n >= 2 && s[n - 2] == '=') { 7184595be952e3b1d6776a023e3f447c057797f1505Andreas Huber padding = 2; 7194595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7204595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7214595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7224595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t outLen = 3 * size / 4 - padding; 7234595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7244595be952e3b1d6776a023e3f447c057797f1505Andreas Huber *outSize = outLen; 7254595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7264595be952e3b1d6776a023e3f447c057797f1505Andreas Huber void *buffer = malloc(outLen); 7274595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7284595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint8_t *out = (uint8_t *)buffer; 7294595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t j = 0; 7304595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t accum = 0; 7314595be952e3b1d6776a023e3f447c057797f1505Andreas Huber for (size_t i = 0; i < n; ++i) { 7324595be952e3b1d6776a023e3f447c057797f1505Andreas Huber char c = s[i]; 7334595be952e3b1d6776a023e3f447c057797f1505Andreas Huber unsigned value; 7344595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (c >= 'A' && c <= 'Z') { 7354595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = c - 'A'; 7364595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c >= 'a' && c <= 'z') { 7374595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 26 + c - 'a'; 7384595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c >= '0' && c <= '9') { 7394595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 52 + c - '0'; 7404595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c == '+') { 7414595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 62; 7424595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c == '/') { 7434595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 63; 7444595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else if (c != '=') { 7454595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return NULL; 7464595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } else { 7474595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (i < n - padding) { 7484595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return NULL; 7494595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7504595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7514595be952e3b1d6776a023e3f447c057797f1505Andreas Huber value = 0; 7524595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7534595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7544595be952e3b1d6776a023e3f447c057797f1505Andreas Huber accum = (accum << 6) | value; 7554595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7564595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (((i + 1) % 4) == 0) { 7574595be952e3b1d6776a023e3f447c057797f1505Andreas Huber out[j++] = (accum >> 16); 7584595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7594595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (j < outLen) { out[j++] = (accum >> 8) & 0xff; } 7604595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (j < outLen) { out[j++] = accum & 0xff; } 7614595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7624595be952e3b1d6776a023e3f447c057797f1505Andreas Huber accum = 0; 7634595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7644595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7654595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7664595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return (uint8_t *)buffer; 7674595be952e3b1d6776a023e3f447c057797f1505Andreas Huber} 7684595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7694595be952e3b1d6776a023e3f447c057797f1505Andreas Hubervoid MyVorbisExtractor::extractAlbumArt(const void *data, size_t size) { 7704595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("extractAlbumArt from '%s'", (const char *)data); 7714595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7724595be952e3b1d6776a023e3f447c057797f1505Andreas Huber size_t flacSize; 7734595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint8_t *flac = DecodeBase64((const char *)data, size, &flacSize); 7744595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7754595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flac == NULL) { 7764595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGE("malformed base64 encoded data."); 7774595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return; 7784595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7794595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7804595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("got flac of size %d", flacSize); 7814595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7824595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t picType; 7834595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t typeLen; 7844595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t descLen; 7854595be952e3b1d6776a023e3f447c057797f1505Andreas Huber uint32_t dataLen; 7864595be952e3b1d6776a023e3f447c057797f1505Andreas Huber char type[128]; 7874595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7884595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 8) { 7894595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7904595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7914595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7924595be952e3b1d6776a023e3f447c057797f1505Andreas Huber picType = U32_AT(flac); 7934595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7944595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (picType != 3) { 7954595be952e3b1d6776a023e3f447c057797f1505Andreas Huber // This is not a front cover. 7964595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 7974595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 7984595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 7994595be952e3b1d6776a023e3f447c057797f1505Andreas Huber typeLen = U32_AT(&flac[4]); 8004595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (typeLen + 1 > sizeof(type)) { 8014595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 8024595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 8034595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8044595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 8 + typeLen) { 8054595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 8064595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 8074595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8084595be952e3b1d6776a023e3f447c057797f1505Andreas Huber memcpy(type, &flac[8], typeLen); 8094595be952e3b1d6776a023e3f447c057797f1505Andreas Huber type[typeLen] = '\0'; 8104595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8114595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("picType = %d, type = '%s'", picType, type); 8124595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8134595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (!strcmp(type, "-->")) { 8144595be952e3b1d6776a023e3f447c057797f1505Andreas Huber // This is not inline cover art, but an external url instead. 8154595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 8164595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 8174595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8184595be952e3b1d6776a023e3f447c057797f1505Andreas Huber descLen = U32_AT(&flac[8 + typeLen]); 8194595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8204595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 32 + typeLen + descLen) { 8214595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 8224595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 8234595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8244595be952e3b1d6776a023e3f447c057797f1505Andreas Huber dataLen = U32_AT(&flac[8 + typeLen + 4 + descLen + 16]); 8254595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8264595be952e3b1d6776a023e3f447c057797f1505Andreas Huber if (flacSize < 32 + typeLen + descLen + dataLen) { 8274595be952e3b1d6776a023e3f447c057797f1505Andreas Huber goto exit; 8284595be952e3b1d6776a023e3f447c057797f1505Andreas Huber } 8294595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8304595be952e3b1d6776a023e3f447c057797f1505Andreas Huber LOGV("got image data, %d trailing bytes", 8314595be952e3b1d6776a023e3f447c057797f1505Andreas Huber flacSize - 32 - typeLen - descLen - dataLen); 8324595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8334595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setData( 8344595be952e3b1d6776a023e3f447c057797f1505Andreas Huber kKeyAlbumArt, 0, &flac[8 + typeLen + 4 + descLen + 20], dataLen); 8354595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8364595be952e3b1d6776a023e3f447c057797f1505Andreas Huber mFileMeta->setCString(kKeyAlbumArtMIME, type); 8374595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 8384595be952e3b1d6776a023e3f447c057797f1505Andreas Huberexit: 8394595be952e3b1d6776a023e3f447c057797f1505Andreas Huber free(flac); 8404595be952e3b1d6776a023e3f447c057797f1505Andreas Huber flac = NULL; 8414595be952e3b1d6776a023e3f447c057797f1505Andreas Huber} 8424595be952e3b1d6776a023e3f447c057797f1505Andreas Huber 843ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber//////////////////////////////////////////////////////////////////////////////// 844ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 845ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggExtractor::OggExtractor(const sp<DataSource> &source) 846ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber : mDataSource(source), 847ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mInitCheck(NO_INIT), 848ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mImpl(NULL) { 849ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mImpl = new MyVorbisExtractor(mDataSource); 8505a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber mInitCheck = mImpl->seekToOffset(0); 851ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 8525a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber if (mInitCheck == OK) { 8535a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber mInitCheck = mImpl->init(); 8545a4001ddb2536d65d966970fc0579bf6bd11b5a0Andreas Huber } 855ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 856ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 857ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas HuberOggExtractor::~OggExtractor() { 858ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber delete mImpl; 859ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mImpl = NULL; 860ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 861ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 862ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersize_t OggExtractor::countTracks() { 863ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mInitCheck != OK ? 0 : 1; 864ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 865ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 866ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MediaSource> OggExtractor::getTrack(size_t index) { 867ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (index >= 1) { 868ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return NULL; 869ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 870ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 871ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return new OggSource(this); 872ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 873ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 874ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> OggExtractor::getTrackMetaData( 875ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber size_t index, uint32_t flags) { 876ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (index >= 1) { 877ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return NULL; 878ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 879ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 880ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return mImpl->getFormat(); 881ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 882ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 883ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Hubersp<MetaData> OggExtractor::getMetaData() { 8844595be952e3b1d6776a023e3f447c057797f1505Andreas Huber return mImpl->getFileMetaData(); 885ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 886ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 887ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberbool SniffOgg( 8885a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber const sp<DataSource> &source, String8 *mimeType, float *confidence, 8895a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber sp<AMessage> *) { 890ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber char tmp[4]; 891ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber if (source->readAt(0, tmp, 4) < 4 || memcmp(tmp, "OggS", 4)) { 892ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return false; 893ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber } 894ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 895ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber mimeType->setTo(MEDIA_MIMETYPE_CONTAINER_OGG); 896ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber *confidence = 0.2f; 897ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 898ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return true; 899ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 900ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 901ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} // namespace android 902