ID3.cpp revision bebd11b5a406bc4243cb7bd55f6849841bf911a7
1fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber/* 2fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * Copyright (C) 2010 The Android Open Source Project 3fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * 4fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * you may not use this file except in compliance with the License. 6fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * You may obtain a copy of the License at 7fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * 8fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * 10fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * Unless required by applicable law or agreed to in writing, software 11fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * See the License for the specific language governing permissions and 14fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber * limitations under the License. 15fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber */ 16fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 17fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber//#define LOG_NDEBUG 0 18fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#define LOG_TAG "ID3" 19fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#include <utils/Log.h> 20fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 21fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#include "../include/ID3.h" 22fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 23fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#include <media/stagefright/DataSource.h> 24fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#include <media/stagefright/MediaDebug.h> 25fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#include <media/stagefright/Utils.h> 26fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#include <utils/String8.h> 27569e7f1b1444194d1aca5a0b23de154565ba12daMarco Nelissen#include <byteswap.h> 28fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 29fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubernamespace android { 30fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 3165997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huberstatic const size_t kMaxMetadataSize = 3 * 1024 * 1024; 3265997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huber 33fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::ID3(const sp<DataSource> &source) 34fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber : mIsValid(false), 35fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mData(NULL), 36fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mSize(0), 37fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFirstFrameOffset(0), 38fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mVersion(ID3_UNKNOWN) { 3983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mIsValid = parseV2(source); 4083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 4183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (!mIsValid) { 4283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mIsValid = parseV1(source); 4383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 44fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 45fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 46fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::~ID3() { 47fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mData) { 48fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber free(mData); 49fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mData = NULL; 50fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 51fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 52fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 53fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberbool ID3::isValid() const { 54fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mIsValid; 55fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 56fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 57fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::Version ID3::version() const { 58fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mVersion; 59fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 60fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 61bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber// static 62bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huberbool ID3::ParseSyncsafeInteger(const uint8_t encoded[4], size_t *x) { 63bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber *x = 0; 64bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber for (int32_t i = 0; i < 4; ++i) { 65bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (encoded[i] & 0x80) { 66bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return false; 67bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 68bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 69bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber *x = ((*x) << 7) | encoded[i]; 70bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 71bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 72bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return true; 73bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber} 74bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 7583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huberbool ID3::parseV2(const sp<DataSource> &source) { 76bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huberstruct id3_header { 77bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber char id[3]; 78bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber uint8_t version_major; 79bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber uint8_t version_minor; 80bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber uint8_t flags; 81bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber uint8_t enc_size[4]; 82fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber }; 83fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 84fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id3_header header; 85fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (source->readAt( 86fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 0, &header, sizeof(header)) != (ssize_t)sizeof(header)) { 87fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 88fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 89fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 90fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (memcmp(header.id, "ID3", 3)) { 91fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 92fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 93fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 94fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 0xff || header.version_minor == 0xff) { 95fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 96fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 97fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 98fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 2) { 99fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x3f) { 100fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // We only support the 2 high bits, if any of the lower bits are 101fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // set, we cannot guarantee to understand the tag format. 102fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 103fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 104fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 105fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x40) { 106fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // No compression scheme has been decided yet, ignore the 107fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // tag if compression is indicated. 108fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 109fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 110fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 111fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (header.version_major == 3) { 112fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x1f) { 113fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // We only support the 3 high bits, if any of the lower bits are 114fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // set, we cannot guarantee to understand the tag format. 115fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 116fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 117bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (header.version_major == 4) { 118bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (header.flags & 0x0f) { 119bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // The lower 4 bits are undefined in this spec. 120bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return false; 121bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 122fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 123fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 124fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 125fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 126bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber size_t size; 127bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (!ParseSyncsafeInteger(header.enc_size, &size)) { 128bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return false; 129fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 130fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 13165997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huber if (size > kMaxMetadataSize) { 13265997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huber LOGE("skipping huge ID3 metadata of size %d", size); 13365997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huber return false; 13465997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huber } 13565997f022fa3f557ba864ecc99a1aa33df54c2dbAndreas Huber 136fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mData = (uint8_t *)malloc(size); 137fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 138fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mData == NULL) { 139fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 140fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 141fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 142fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mSize = size; 143fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 144fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (source->readAt(sizeof(header), mData, mSize) != (ssize_t)mSize) { 145fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 146fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 147fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 148fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x80) { 14983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber LOGV("removing unsynchronization"); 150fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber removeUnsynchronization(); 151fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 152fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 153fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFirstFrameOffset = 0; 154fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 3 && (header.flags & 0x40)) { 155fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Version 2.3 has an optional extended header. 156fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 157fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mSize < 4) { 15883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 15983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 16083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 161fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 162fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 163fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 164fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t extendedHeaderSize = U32_AT(&mData[0]) + 4; 165fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 166fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedHeaderSize > mSize) { 16783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 16883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 16983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 170fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 171fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 172fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 173fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFirstFrameOffset = extendedHeaderSize; 174fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 175fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint16_t extendedFlags = 0; 176fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedHeaderSize >= 6) { 177fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber extendedFlags = U16_AT(&mData[4]); 178fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 179fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedHeaderSize >= 10) { 180fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t paddingSize = U32_AT(&mData[6]); 181fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 182fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFirstFrameOffset + paddingSize > mSize) { 18383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 18483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 18583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 186fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 187fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 188fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 189fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mSize -= paddingSize; 190fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 191fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 192fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedFlags & 0x8000) { 19383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber LOGV("have crc"); 194fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 195fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 196bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (header.version_major == 4 && (header.flags & 0x40)) { 197bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // Version 2.4 has an optional extended header, that's different 198bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // from Version 2.3's... 199bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 200bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (mSize < 4) { 201bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber free(mData); 202bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mData = NULL; 203bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 204bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return false; 205bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 206bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 207bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber size_t ext_size; 208bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (!ParseSyncsafeInteger(mData, &ext_size)) { 209bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber free(mData); 210bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mData = NULL; 211bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 212bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return false; 213bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 214bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 215bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (ext_size < 6 || ext_size > mSize) { 216bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber free(mData); 217bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mData = NULL; 218bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 219bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return false; 220bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 221bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 222bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mFirstFrameOffset = ext_size; 223fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 224fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 225fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 2) { 226fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mVersion = ID3_V2_2; 227bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (header.version_major == 3) { 228fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mVersion = ID3_V2_3; 229bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else { 230bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber CHECK_EQ(header.version_major, 4); 231bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mVersion = ID3_V2_4; 232fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 233fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 234fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return true; 235fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 236fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 237fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::removeUnsynchronization() { 238fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (size_t i = 0; i + 1 < mSize; ++i) { 239fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mData[i] == 0xff && mData[i + 1] == 0x00) { 240fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber memmove(&mData[i + 1], &mData[i + 2], mSize - i - 2); 241fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber --mSize; 242fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 243fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 244fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 245fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 246fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::Iterator::Iterator(const ID3 &parent, const char *id) 247fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber : mParent(parent), 248fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mID(NULL), 249fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset(mParent.mFirstFrameOffset), 250fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData(NULL), 251fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize(0) { 252fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (id) { 253fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mID = strdup(id); 254fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 255fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 256fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber findFrame(); 257fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 258fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 259fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::Iterator::~Iterator() { 260fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mID) { 261fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber free(mID); 262fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mID = NULL; 263fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 264fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 265fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 266fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberbool ID3::Iterator::done() const { 267fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mFrameData == NULL; 268fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 269fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 270fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::next() { 271fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 272fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 273fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 274fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 275fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset += mFrameSize; 276fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 277fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber findFrame(); 278fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 279fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 280fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::getID(String8 *id) const { 281fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo(""); 282fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 283fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 284fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 285fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 286fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 287fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mParent.mVersion == ID3_V2_2) { 288fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo((const char *)&mParent.mData[mOffset], 3); 289bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (mParent.mVersion == ID3_V2_3 || mParent.mVersion == ID3_V2_4) { 290fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo((const char *)&mParent.mData[mOffset], 4); 29183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 29283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1); 29383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 29483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber switch (mOffset) { 29583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 3: 29683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TT2"); 29783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 29883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 33: 29983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TP1"); 30083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 30183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 63: 30283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TAL"); 30383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 30483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 93: 30583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TYE"); 30683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 30783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 97: 30883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("COM"); 30983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 31083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 126: 31183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TRK"); 31283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 31383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 127: 31483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TCO"); 31583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 31683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber default: 31783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(!"should not be here."); 31883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 31983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 320fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 321fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 322fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 323fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberstatic void convertISO8859ToString8( 324fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber const uint8_t *data, size_t size, 325fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber String8 *s) { 326fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t utf8len = 0; 327fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (size_t i = 0; i < size; ++i) { 3284c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber if (data[i] == '\0') { 329632a7dfdab89ffa79846ad37718d0582fd36affeKenny Root size = i; 3304c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber break; 3314c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber } else if (data[i] < 0x80) { 332fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber ++utf8len; 333fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 334fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber utf8len += 2; 335fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 336fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 337fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 338fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (utf8len == size) { 339fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Only ASCII characters present. 340fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 341fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber s->setTo((const char *)data, size); 342fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 343fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 344fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 345fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char *tmp = new char[utf8len]; 346fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char *ptr = tmp; 347fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (size_t i = 0; i < size; ++i) { 3484c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber if (data[i] == '\0') { 3494c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber break; 3504c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber } else if (data[i] < 0x80) { 351fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = data[i]; 352fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (data[i] < 0xc0) { 353fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = 0xc2; 354fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = data[i]; 355fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 356fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = 0xc3; 357fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = data[i] - 64; 358fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 359fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 360fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 361fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber s->setTo(tmp, utf8len); 362fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 363fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber delete[] tmp; 364fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber tmp = NULL; 365fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 366fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 367fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::getString(String8 *id) const { 368fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo(""); 369fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 370fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 371fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 372fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 373fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 37483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1) { 37583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mOffset == 126 || mOffset == 127) { 37683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber // Special treatment for the track number and genre. 37783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber char tmp[16]; 37883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber sprintf(tmp, "%d", (int)*mFrameData); 37983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 38083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo(tmp); 38183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return; 38283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 38383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 3844c23b7d543cd95250e766cef7558d0f4c941ddcbAndreas Huber convertISO8859ToString8(mFrameData, mFrameSize, id); 38583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return; 38683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 38783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 388fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t n = mFrameSize - getHeaderLength() - 1; 389fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 390fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (*mFrameData == 0x00) { 391fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // ISO 8859-1 392fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber convertISO8859ToString8(mFrameData + 1, n, id); 393bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (*mFrameData == 0x03) { 394bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // UTF-8 395bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber id->setTo((const char *)(mFrameData + 1), n); 396bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (*mFrameData == 0x02) { 397bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // UTF-16 BE, no byte order mark. 398bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // API wants number of characters, not number of bytes... 399bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber int len = n / 2; 400bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber const char16_t *framedata = (const char16_t *) (mFrameData + 1); 401bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber char16_t *framedatacopy = NULL; 402bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber#if BYTE_ORDER == LITTLE_ENDIAN 403bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber framedatacopy = new char16_t[len]; 404bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber for (int i = 0; i < len; i++) { 405bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber framedatacopy[i] = bswap_16(framedata[i]); 406bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 407bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber framedata = framedatacopy; 408bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber#endif 409bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber id->setTo(framedata, len); 410bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (framedatacopy != NULL) { 411bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber delete[] framedatacopy; 412bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 413fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 414fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // UCS-2 41508e7eb983fcb9860a574e964ff905f75aab88d2fAndreas Huber // API wants number of characters, not number of bytes... 4165a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen int len = n / 2; 4175a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen const char16_t *framedata = (const char16_t *) (mFrameData + 1); 4185a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen char16_t *framedatacopy = NULL; 4195a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen if (*framedata == 0xfffe) { 4205a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen // endianness marker doesn't match host endianness, convert 4215a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen framedatacopy = new char16_t[len]; 4225a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen for (int i = 0; i < len; i++) { 423569e7f1b1444194d1aca5a0b23de154565ba12daMarco Nelissen framedatacopy[i] = bswap_16(framedata[i]); 4245a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen } 4255a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen framedata = framedatacopy; 4265a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen } 4275a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen // If the string starts with an endianness marker, skip it 4285a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen if (*framedata == 0xfeff) { 4295a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen framedata++; 4305a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen len--; 4315a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen } 4325a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen id->setTo(framedata, len); 4335a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen if (framedatacopy != NULL) { 4345a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen delete[] framedatacopy; 4355a2621a64de196cbdb9a2a50357dee1c32fcf11bMarco Nelissen } 436fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 437fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 438fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 439fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberconst uint8_t *ID3::Iterator::getData(size_t *length) const { 440fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = 0; 441fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 442fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 443fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return NULL; 444fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 445fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 446fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = mFrameSize - getHeaderLength(); 447fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 448fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mFrameData; 449fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 450fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 451fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubersize_t ID3::Iterator::getHeaderLength() const { 452fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mParent.mVersion == ID3_V2_2) { 453fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return 6; 454bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (mParent.mVersion == ID3_V2_3 || mParent.mVersion == ID3_V2_4) { 455fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return 10; 45683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 45783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1); 45883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return 0; 459fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 460fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 461fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 462fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::findFrame() { 463fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (;;) { 464fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData = NULL; 465fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize = 0; 466fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 467fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mParent.mVersion == ID3_V2_2) { 468fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + 6 > mParent.mSize) { 469fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 470fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 471fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 472fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!memcmp(&mParent.mData[mOffset], "\0\0\0", 3)) { 473fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 474fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 475fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 476fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize = 477fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber (mParent.mData[mOffset + 3] << 16) 478fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber | (mParent.mData[mOffset + 4] << 8) 479fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber | mParent.mData[mOffset + 5]; 480fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 481fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize += 6; 482fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 483fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + mFrameSize > mParent.mSize) { 484fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber LOGV("partial frame at offset %d (size = %d, bytes-remaining = %d)", 485fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset, mFrameSize, mParent.mSize - mOffset - 6); 486fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 487fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 488fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 489fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData = &mParent.mData[mOffset + 6]; 490fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 491fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!mID) { 492fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 493fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 494fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 495fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char id[4]; 496fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber memcpy(id, &mParent.mData[mOffset], 3); 497fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id[3] = '\0'; 498fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 499fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!strcmp(id, mID)) { 500fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 501fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 502bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else if (mParent.mVersion == ID3_V2_3 503bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber || mParent.mVersion == ID3_V2_4) { 504fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + 10 > mParent.mSize) { 505fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 506fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 507fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 508fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!memcmp(&mParent.mData[mOffset], "\0\0\0\0", 4)) { 509fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 510fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 511fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 512bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber size_t baseSize; 513bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (mParent.mVersion == ID3_V2_4) { 514bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (!ParseSyncsafeInteger( 515bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber &mParent.mData[mOffset + 4], &baseSize)) { 516bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber return; 517bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 518bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } else { 519bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber baseSize = U32_AT(&mParent.mData[mOffset + 4]); 520bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 521bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 522bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mFrameSize = 10 + baseSize; 523fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 524fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + mFrameSize > mParent.mSize) { 525fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber LOGV("partial frame at offset %d (size = %d, bytes-remaining = %d)", 526fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset, mFrameSize, mParent.mSize - mOffset - 10); 527fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 528fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 529fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 530bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber uint16_t flags = U16_AT(&mParent.mData[mOffset + 8]); 531bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 532bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if ((mParent.mVersion == ID3_V2_4 && (flags & 0x000e)) 533bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber || (mParent.mVersion == ID3_V2_3 && (flags & 0x00c0))) { 534bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // Compression, Encryption or per-Frame unsynchronization 535bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // are not supported at this time. 536bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 537bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber LOGV("Skipping unsupported frame (compression, encryption " 538bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber "or per-frame unsynchronization flagged"); 539bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 540bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber mOffset += mFrameSize; 541bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber continue; 542bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber } 543bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber 544fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData = &mParent.mData[mOffset + 10]; 545fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 546fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!mID) { 547fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 548fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 549fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 550fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char id[5]; 551fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber memcpy(id, &mParent.mData[mOffset], 4); 552fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id[4] = '\0'; 553fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 554fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!strcmp(id, mID)) { 555fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 556fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 55783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 55883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1); 55983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 56083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mOffset >= mParent.mSize) { 56183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return; 56283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 56383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 56483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameData = &mParent.mData[mOffset]; 56583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 56683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber switch (mOffset) { 56783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 3: 56883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 33: 56983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 63: 57083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 30; 57183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 57283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 93: 57383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 4; 57483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 57583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 97: 57683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mParent.mVersion == ID3_V1) { 57783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 30; 57883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 57983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 29; 58083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 58183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 58283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 126: 58383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 1; 58483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 58583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 127: 58683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 1; 58783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 58883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber default: 58983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(!"Should not be here, invalid offset."); 59083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 59183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 59283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 59383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (!mID) { 59483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 59583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 59683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 59783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber String8 id; 59883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber getID(&id); 59983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 60083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (id == mID) { 60183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 60283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 603fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 604fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 605fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset += mFrameSize; 606fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 607fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 608fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 609fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberstatic size_t StringSize(const uint8_t *start, uint8_t encoding) { 610bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (encoding == 0x00 || encoding == 0x03) { 611bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber // ISO 8859-1 or UTF-8 612fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return strlen((const char *)start) + 1; 613fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 614fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 615fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // UCS-2 616fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t n = 0; 617fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber while (start[n] != '\0' || start[n + 1] != '\0') { 618fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber n += 2; 619fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 620fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 621fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return n; 622fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 623fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 624fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberconst void * 625fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::getAlbumArt(size_t *length, String8 *mime) const { 626fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = 0; 627fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo(""); 628fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 629bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber Iterator it( 630bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber *this, 631bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber (mVersion == ID3_V2_3 || mVersion == ID3_V2_4) ? "APIC" : "PIC"); 632fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 633fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber while (!it.done()) { 634fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t size; 635fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber const uint8_t *data = it.getData(&size); 636fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 637bebd11b5a406bc4243cb7bd55f6849841bf911a7Andreas Huber if (mVersion == ID3_V2_3 || mVersion == ID3_V2_4) { 638fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t encoding = data[0]; 639fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo((const char *)&data[1]); 640fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t mimeLen = strlen((const char *)&data[1]) + 1; 641fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 642fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t picType = data[1 + mimeLen]; 643fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#if 0 644fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (picType != 0x03) { 645fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Front Cover Art 646fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber it.next(); 647fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber continue; 648fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 649fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#endif 650fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 651fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t descLen = StringSize(&data[2 + mimeLen], encoding); 652fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 653fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = size - 2 - mimeLen - descLen; 654fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 655fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return &data[2 + mimeLen + descLen]; 656fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 657fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t encoding = data[0]; 658fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 659fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!memcmp(&data[1], "PNG", 3)) { 660fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo("image/png"); 661fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (!memcmp(&data[1], "JPG", 3)) { 662fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo("image/jpeg"); 663fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (!memcmp(&data[1], "-->", 3)) { 664fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo("text/plain"); 665fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 666fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return NULL; 667fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 668fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 669fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#if 0 670fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t picType = data[4]; 671fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (picType != 0x03) { 672fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Front Cover Art 673fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber it.next(); 674fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber continue; 675fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 676fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#endif 677fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 678fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t descLen = StringSize(&data[5], encoding); 679fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 680fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = size - 5 - descLen; 681fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 682fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return &data[5 + descLen]; 683fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 684fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 685fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 686fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return NULL; 687fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 688fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 68983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huberbool ID3::parseV1(const sp<DataSource> &source) { 69083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber const size_t V1_TAG_SIZE = 128; 69183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 69283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber off_t size; 69383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (source->getSize(&size) != OK || size < (off_t)V1_TAG_SIZE) { 69483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return false; 69583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 69683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 69783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = (uint8_t *)malloc(V1_TAG_SIZE); 69883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (source->readAt(size - V1_TAG_SIZE, mData, V1_TAG_SIZE) 69983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber != (ssize_t)V1_TAG_SIZE) { 70083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 70183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 70283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 70383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return false; 70483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 70583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 70683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (memcmp("TAG", mData, 3)) { 70783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 70883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 70983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 71083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return false; 71183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 71283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 71383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mSize = V1_TAG_SIZE; 71483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFirstFrameOffset = 3; 71583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 71683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mData[V1_TAG_SIZE - 3] != 0) { 71783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mVersion = ID3_V1; 71883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 71983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mVersion = ID3_V1_1; 72083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 72183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 72283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return true; 72383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber} 724fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 725fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} // namespace android 726