ID3.cpp revision 08e7eb983fcb9860a574e964ff905f75aab88d2f
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> 27fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 28fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubernamespace android { 29fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 30fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::ID3(const sp<DataSource> &source) 31fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber : mIsValid(false), 32fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mData(NULL), 33fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mSize(0), 34fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFirstFrameOffset(0), 35fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mVersion(ID3_UNKNOWN) { 3683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mIsValid = parseV2(source); 3783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 3883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (!mIsValid) { 3983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mIsValid = parseV1(source); 4083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 41fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 42fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 43fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::~ID3() { 44fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mData) { 45fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber free(mData); 46fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mData = NULL; 47fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 48fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 49fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 50fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberbool ID3::isValid() const { 51fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mIsValid; 52fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 53fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 54fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::Version ID3::version() const { 55fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mVersion; 56fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 57fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 5883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huberbool ID3::parseV2(const sp<DataSource> &source) { 59fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber struct id3_header { 60fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char id[3]; 61fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t version_major; 62fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t version_minor; 63fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t flags; 64fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t enc_size[4]; 65fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber }; 66fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 67fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id3_header header; 68fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (source->readAt( 69fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 0, &header, sizeof(header)) != (ssize_t)sizeof(header)) { 70fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 71fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 72fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 73fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (memcmp(header.id, "ID3", 3)) { 74fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 75fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 76fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 77fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 0xff || header.version_minor == 0xff) { 78fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 79fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 80fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 81fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 2) { 82fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x3f) { 83fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // We only support the 2 high bits, if any of the lower bits are 84fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // set, we cannot guarantee to understand the tag format. 85fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 86fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 87fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 88fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x40) { 89fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // No compression scheme has been decided yet, ignore the 90fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // tag if compression is indicated. 91fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 92fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 93fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 94fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (header.version_major == 3) { 95fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x1f) { 96fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // We only support the 3 high bits, if any of the lower bits are 97fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // set, we cannot guarantee to understand the tag format. 98fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 99fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 100fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 101fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 102fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 103fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 104fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t size = 0; 105fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (int32_t i = 0; i < 4; ++i) { 106fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.enc_size[i] & 0x80) { 107fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 108fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 109fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 110fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size = (size << 7) | header.enc_size[i]; 111fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 112fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 113fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mData = (uint8_t *)malloc(size); 114fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 115fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mData == NULL) { 116fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 117fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 118fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 119fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mSize = size; 120fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 121fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (source->readAt(sizeof(header), mData, mSize) != (ssize_t)mSize) { 122fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 123fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 124fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 125fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.flags & 0x80) { 12683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber LOGV("removing unsynchronization"); 127fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber removeUnsynchronization(); 128fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 129fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 130fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFirstFrameOffset = 0; 131fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 3 && (header.flags & 0x40)) { 132fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Version 2.3 has an optional extended header. 133fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 134fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mSize < 4) { 13583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 13683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 13783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 138fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 139fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 140fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 141fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t extendedHeaderSize = U32_AT(&mData[0]) + 4; 142fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 143fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedHeaderSize > mSize) { 14483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 14583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 14683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 147fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 148fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 149fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 150fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFirstFrameOffset = extendedHeaderSize; 151fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 152fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint16_t extendedFlags = 0; 153fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedHeaderSize >= 6) { 154fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber extendedFlags = U16_AT(&mData[4]); 155fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 156fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedHeaderSize >= 10) { 157fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t paddingSize = U32_AT(&mData[6]); 158fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 159fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFirstFrameOffset + paddingSize > mSize) { 16083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 16183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 16283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 163fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return false; 164fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 165fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 166fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mSize -= paddingSize; 167fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 168fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 169fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (extendedFlags & 0x8000) { 17083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber LOGV("have crc"); 171fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 172fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 173fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 174fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 175fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (header.version_major == 2) { 176fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mVersion = ID3_V2_2; 177fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 178fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber CHECK_EQ(header.version_major, 3); 179fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mVersion = ID3_V2_3; 180fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 181fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 182fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return true; 183fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 184fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 185fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::removeUnsynchronization() { 186fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (size_t i = 0; i + 1 < mSize; ++i) { 187fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mData[i] == 0xff && mData[i + 1] == 0x00) { 188fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber memmove(&mData[i + 1], &mData[i + 2], mSize - i - 2); 189fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber --mSize; 190fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 191fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 192fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 193fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 194fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::Iterator::Iterator(const ID3 &parent, const char *id) 195fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber : mParent(parent), 196fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mID(NULL), 197fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset(mParent.mFirstFrameOffset), 198fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData(NULL), 199fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize(0) { 200fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (id) { 201fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mID = strdup(id); 202fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 203fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 204fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber findFrame(); 205fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 206fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 207fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::Iterator::~Iterator() { 208fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mID) { 209fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber free(mID); 210fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mID = NULL; 211fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 212fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 213fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 214fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberbool ID3::Iterator::done() const { 215fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mFrameData == NULL; 216fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 217fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 218fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::next() { 219fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 220fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 221fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 222fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 223fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset += mFrameSize; 224fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 225fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber findFrame(); 226fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 227fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 228fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::getID(String8 *id) const { 229fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo(""); 230fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 231fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 232fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 233fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 234fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 235fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mParent.mVersion == ID3_V2_2) { 236fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo((const char *)&mParent.mData[mOffset], 3); 23783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else if (mParent.mVersion == ID3_V2_3) { 238fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo((const char *)&mParent.mData[mOffset], 4); 23983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 24083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1); 24183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 24283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber switch (mOffset) { 24383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 3: 24483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TT2"); 24583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 24683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 33: 24783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TP1"); 24883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 24983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 63: 25083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TAL"); 25183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 25283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 93: 25383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TYE"); 25483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 25583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 97: 25683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("COM"); 25783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 25883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 126: 25983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TRK"); 26083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 26183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 127: 26283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo("TCO"); 26383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 26483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber default: 26583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(!"should not be here."); 26683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 26783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 268fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 269fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 270fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 271fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberstatic void convertISO8859ToString8( 272fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber const uint8_t *data, size_t size, 273fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber String8 *s) { 274fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t utf8len = 0; 275fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (size_t i = 0; i < size; ++i) { 276fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (data[i] < 0x80) { 277fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber ++utf8len; 278fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 279fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber utf8len += 2; 280fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 281fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 282fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 283fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (utf8len == size) { 284fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Only ASCII characters present. 285fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 286fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber s->setTo((const char *)data, size); 287fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 288fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 289fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 290fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char *tmp = new char[utf8len]; 291fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char *ptr = tmp; 292fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (size_t i = 0; i < size; ++i) { 293fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (data[i] < 0x80) { 294fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = data[i]; 295fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (data[i] < 0xc0) { 296fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = 0xc2; 297fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = data[i]; 298fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 299fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = 0xc3; 300fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *ptr++ = data[i] - 64; 301fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 302fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 303fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 304fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber s->setTo(tmp, utf8len); 305fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 306fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber delete[] tmp; 307fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber tmp = NULL; 308fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 309fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 310fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::getString(String8 *id) const { 311fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id->setTo(""); 312fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 313fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 314fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 315fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 316fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 31783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1) { 31883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mOffset == 126 || mOffset == 127) { 31983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber // Special treatment for the track number and genre. 32083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber char tmp[16]; 32183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber sprintf(tmp, "%d", (int)*mFrameData); 32283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 32383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo(tmp); 32483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return; 32583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 32683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 32783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber id->setTo((const char *)mFrameData, mFrameSize); 32883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return; 32983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 33083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 331fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t n = mFrameSize - getHeaderLength() - 1; 332fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 333fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (*mFrameData == 0x00) { 334fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // ISO 8859-1 335fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber convertISO8859ToString8(mFrameData + 1, n, id); 336fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 337fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // UCS-2 33808e7eb983fcb9860a574e964ff905f75aab88d2fAndreas Huber // API wants number of characters, not number of bytes... 33908e7eb983fcb9860a574e964ff905f75aab88d2fAndreas Huber id->setTo((const char16_t *)(mFrameData + 1), n / 2); 340fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 341fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 342fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 343fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberconst uint8_t *ID3::Iterator::getData(size_t *length) const { 344fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = 0; 345fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 346fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mFrameData == NULL) { 347fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return NULL; 348fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 349fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 350fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = mFrameSize - getHeaderLength(); 351fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 352fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return mFrameData; 353fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 354fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 355fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubersize_t ID3::Iterator::getHeaderLength() const { 356fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mParent.mVersion == ID3_V2_2) { 357fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return 6; 35883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else if (mParent.mVersion == ID3_V2_3) { 359fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return 10; 36083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 36183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1); 36283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return 0; 363fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 364fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 365fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 366fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Hubervoid ID3::Iterator::findFrame() { 367fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber for (;;) { 368fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData = NULL; 369fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize = 0; 370fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 371fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mParent.mVersion == ID3_V2_2) { 372fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + 6 > mParent.mSize) { 373fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 374fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 375fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 376fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!memcmp(&mParent.mData[mOffset], "\0\0\0", 3)) { 377fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 378fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 379fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 380fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize = 381fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber (mParent.mData[mOffset + 3] << 16) 382fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber | (mParent.mData[mOffset + 4] << 8) 383fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber | mParent.mData[mOffset + 5]; 384fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 385fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize += 6; 386fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 387fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + mFrameSize > mParent.mSize) { 388fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber LOGV("partial frame at offset %d (size = %d, bytes-remaining = %d)", 389fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset, mFrameSize, mParent.mSize - mOffset - 6); 390fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 391fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 392fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 393fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData = &mParent.mData[mOffset + 6]; 394fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 395fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!mID) { 396fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 397fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 398fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 399fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char id[4]; 400fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber memcpy(id, &mParent.mData[mOffset], 3); 401fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id[3] = '\0'; 402fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 403fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!strcmp(id, mID)) { 404fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 405fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 40683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else if (mParent.mVersion == ID3_V2_3) { 407fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + 10 > mParent.mSize) { 408fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 409fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 410fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 411fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!memcmp(&mParent.mData[mOffset], "\0\0\0\0", 4)) { 412fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 413fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 414fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 415fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameSize = 10 + U32_AT(&mParent.mData[mOffset + 4]); 416fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 417fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mOffset + mFrameSize > mParent.mSize) { 418fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber LOGV("partial frame at offset %d (size = %d, bytes-remaining = %d)", 419fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset, mFrameSize, mParent.mSize - mOffset - 10); 420fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return; 421fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 422fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 423fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mFrameData = &mParent.mData[mOffset + 10]; 424fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 425fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!mID) { 426fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 427fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 428fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 429fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber char id[5]; 430fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber memcpy(id, &mParent.mData[mOffset], 4); 431fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber id[4] = '\0'; 432fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 433fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!strcmp(id, mID)) { 434fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber break; 435fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 43683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 43783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(mParent.mVersion == ID3_V1 || mParent.mVersion == ID3_V1_1); 43883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 43983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mOffset >= mParent.mSize) { 44083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return; 44183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 44283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 44383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameData = &mParent.mData[mOffset]; 44483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 44583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber switch (mOffset) { 44683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 3: 44783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 33: 44883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 63: 44983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 30; 45083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 45183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 93: 45283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 4; 45383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 45483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 97: 45583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mParent.mVersion == ID3_V1) { 45683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 30; 45783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 45883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 29; 45983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 46083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 46183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 126: 46283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 1; 46383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 46483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber case 127: 46583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFrameSize = 1; 46683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 46783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber default: 46883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber CHECK(!"Should not be here, invalid offset."); 46983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 47083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 47183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 47283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (!mID) { 47383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 47483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 47583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 47683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber String8 id; 47783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber getID(&id); 47883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 47983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (id == mID) { 48083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber break; 48183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 482fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 483fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 484fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mOffset += mFrameSize; 485fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 486fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 487fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 488fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberstatic size_t StringSize(const uint8_t *start, uint8_t encoding) { 489fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (encoding== 0x00) { 490fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // ISO 8859-1 491fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return strlen((const char *)start) + 1; 492fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 493fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 494fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // UCS-2 495fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t n = 0; 496fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber while (start[n] != '\0' || start[n + 1] != '\0') { 497fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber n += 2; 498fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 499fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 500fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return n; 501fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 502fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 503fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huberconst void * 504fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas HuberID3::getAlbumArt(size_t *length, String8 *mime) const { 505fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = 0; 506fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo(""); 507fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 508fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber Iterator it(*this, mVersion == ID3_V2_3 ? "APIC" : "PIC"); 509fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 510fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber while (!it.done()) { 511fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t size; 512fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber const uint8_t *data = it.getData(&size); 513fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 514fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (mVersion == ID3_V2_3) { 515fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t encoding = data[0]; 516fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo((const char *)&data[1]); 517fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t mimeLen = strlen((const char *)&data[1]) + 1; 518fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 519fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t picType = data[1 + mimeLen]; 520fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#if 0 521fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (picType != 0x03) { 522fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Front Cover Art 523fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber it.next(); 524fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber continue; 525fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 526fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#endif 527fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 528fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t descLen = StringSize(&data[2 + mimeLen], encoding); 529fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 530fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = size - 2 - mimeLen - descLen; 531fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 532fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return &data[2 + mimeLen + descLen]; 533fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 534fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t encoding = data[0]; 535fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 536fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (!memcmp(&data[1], "PNG", 3)) { 537fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo("image/png"); 538fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (!memcmp(&data[1], "JPG", 3)) { 539fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo("image/jpeg"); 540fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else if (!memcmp(&data[1], "-->", 3)) { 541fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber mime->setTo("text/plain"); 542fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } else { 543fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return NULL; 544fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 545fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 546fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#if 0 547fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber uint8_t picType = data[4]; 548fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber if (picType != 0x03) { 549fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber // Front Cover Art 550fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber it.next(); 551fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber continue; 552fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 553fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber#endif 554fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 555fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber size_t descLen = StringSize(&data[5], encoding); 556fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 557fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber *length = size - 5 - descLen; 558fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 559fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return &data[5 + descLen]; 560fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 561fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber } 562fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 563fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber return NULL; 564fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} 565fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 56683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huberbool ID3::parseV1(const sp<DataSource> &source) { 56783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber const size_t V1_TAG_SIZE = 128; 56883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 56983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber off_t size; 57083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (source->getSize(&size) != OK || size < (off_t)V1_TAG_SIZE) { 57183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return false; 57283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 57383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 57483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = (uint8_t *)malloc(V1_TAG_SIZE); 57583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (source->readAt(size - V1_TAG_SIZE, mData, V1_TAG_SIZE) 57683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber != (ssize_t)V1_TAG_SIZE) { 57783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 57883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 57983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 58083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return false; 58183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 58283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 58383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (memcmp("TAG", mData, 3)) { 58483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber free(mData); 58583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mData = NULL; 58683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 58783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return false; 58883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 58983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 59083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mSize = V1_TAG_SIZE; 59183e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mFirstFrameOffset = 3; 59283e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 59383e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber if (mData[V1_TAG_SIZE - 3] != 0) { 59483e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mVersion = ID3_V1; 59583e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } else { 59683e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber mVersion = ID3_V1_1; 59783e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber } 59883e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber 59983e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber return true; 60083e5850bdf9c8b5c36c364b367b039674eb827adAndreas Huber} 601fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 602fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber} // namespace android 603