| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.google.android.exoplayer2.extractor.mp4; |
| |
| import androidx.annotation.Nullable; |
| import com.google.android.exoplayer2.util.ParsableByteArray; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| @SuppressWarnings("ConstantField") |
| /* package */ abstract class Atom { |
| |
| /** Size of an atom header, in bytes. */ |
| public static final int HEADER_SIZE = 8; |
| |
| /** Size of a full atom header, in bytes. */ |
| public static final int FULL_HEADER_SIZE = 12; |
| |
| /** Size of a long atom header, in bytes. */ |
| public static final int LONG_HEADER_SIZE = 16; |
| |
| /** Value for the size field in an atom that defines its size in the largesize field. */ |
| public static final int DEFINES_LARGE_SIZE = 1; |
| |
| /** Value for the size field in an atom that extends to the end of the file. */ |
| public static final int EXTENDS_TO_END_SIZE = 0; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ftyp = 0x66747970; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_avc1 = 0x61766331; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_avc3 = 0x61766333; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_avcC = 0x61766343; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_hvc1 = 0x68766331; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_hev1 = 0x68657631; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_hvcC = 0x68766343; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_vp08 = 0x76703038; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_vp09 = 0x76703039; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_vpcC = 0x76706343; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_av01 = 0x61763031; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_av1C = 0x61763143; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_colr = 0x636f6c72; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dvav = 0x64766176; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dva1 = 0x64766131; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dvhe = 0x64766865; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dvh1 = 0x64766831; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dvcC = 0x64766343; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dvvC = 0x64767643; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_s263 = 0x73323633; |
| |
| public static final int TYPE_H263 = 0x48323633; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_d263 = 0x64323633; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mdat = 0x6d646174; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mp4a = 0x6d703461; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE__mp2 = 0x2e6d7032; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE__mp3 = 0x2e6d7033; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mha1 = 0x6d686131; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mhm1 = 0x6d686d31; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mhaC = 0x6d686143; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_wave = 0x77617665; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_lpcm = 0x6c70636d; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sowt = 0x736f7774; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ac_3 = 0x61632d33; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dac3 = 0x64616333; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ec_3 = 0x65632d33; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dec3 = 0x64656333; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ac_4 = 0x61632d34; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dac4 = 0x64616334; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mlpa = 0x6d6c7061; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dmlp = 0x646d6c70; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dtsc = 0x64747363; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dtsh = 0x64747368; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dtsl = 0x6474736c; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dtse = 0x64747365; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dtsx = 0x64747378; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ddts = 0x64647473; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_tfdt = 0x74666474; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_tfhd = 0x74666864; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_trex = 0x74726578; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_trun = 0x7472756e; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sidx = 0x73696478; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_moov = 0x6d6f6f76; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mpvd = 0x6d707664; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mvhd = 0x6d766864; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_trak = 0x7472616b; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mdia = 0x6d646961; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_minf = 0x6d696e66; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stbl = 0x7374626c; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_esds = 0x65736473; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_moof = 0x6d6f6f66; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_traf = 0x74726166; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mvex = 0x6d766578; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mehd = 0x6d656864; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_tkhd = 0x746b6864; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_edts = 0x65647473; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_elst = 0x656c7374; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mdhd = 0x6d646864; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_hdlr = 0x68646c72; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stsd = 0x73747364; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_pssh = 0x70737368; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sinf = 0x73696e66; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_schm = 0x7363686d; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_schi = 0x73636869; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_tenc = 0x74656e63; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_encv = 0x656e6376; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_enca = 0x656e6361; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_frma = 0x66726d61; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_saiz = 0x7361697a; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_saio = 0x7361696f; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sbgp = 0x73626770; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sgpd = 0x73677064; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_uuid = 0x75756964; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_senc = 0x73656e63; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_pasp = 0x70617370; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_TTML = 0x54544d4c; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_m1v_ = 0x6d317620; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mp4v = 0x6d703476; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stts = 0x73747473; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stss = 0x73747373; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ctts = 0x63747473; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stsc = 0x73747363; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stsz = 0x7374737a; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stz2 = 0x73747a32; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stco = 0x7374636f; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_co64 = 0x636f3634; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_tx3g = 0x74783367; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_wvtt = 0x77767474; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_stpp = 0x73747070; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_c608 = 0x63363038; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_samr = 0x73616d72; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sawb = 0x73617762; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_udta = 0x75647461; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_meta = 0x6d657461; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_smta = 0x736d7461; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_saut = 0x73617574; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_keys = 0x6b657973; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ilst = 0x696c7374; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mean = 0x6d65616e; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_name = 0x6e616d65; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_data = 0x64617461; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_emsg = 0x656d7367; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_st3d = 0x73743364; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_sv3d = 0x73763364; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_proj = 0x70726f6a; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_camm = 0x63616d6d; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mett = 0x6d657474; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_alac = 0x616c6163; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_alaw = 0x616c6177; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_ulaw = 0x756c6177; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_Opus = 0x4f707573; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dOps = 0x644f7073; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_fLaC = 0x664c6143; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_dfLa = 0x64664c61; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_twos = 0x74776f73; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_clli = 0x636c6c69; |
| |
| @SuppressWarnings("ConstantCaseForConstants") |
| public static final int TYPE_mdcv = 0x6d646376; |
| |
| public final int type; |
| |
| public Atom(int type) { |
| this.type = type; |
| } |
| |
| @Override |
| public String toString() { |
| return getAtomTypeString(type); |
| } |
| |
| /** An MP4 atom that is a leaf. */ |
| /* package */ static final class LeafAtom extends Atom { |
| |
| /** The atom data. */ |
| public final ParsableByteArray data; |
| |
| /** |
| * @param type The type of the atom. |
| * @param data The atom data. |
| */ |
| public LeafAtom(int type, ParsableByteArray data) { |
| super(type); |
| this.data = data; |
| } |
| } |
| |
| /** An MP4 atom that has child atoms. */ |
| /* package */ static final class ContainerAtom extends Atom { |
| |
| public final long endPosition; |
| public final List<LeafAtom> leafChildren; |
| public final List<ContainerAtom> containerChildren; |
| |
| /** |
| * @param type The type of the atom. |
| * @param endPosition The position of the first byte after the end of the atom. |
| */ |
| public ContainerAtom(int type, long endPosition) { |
| super(type); |
| this.endPosition = endPosition; |
| leafChildren = new ArrayList<>(); |
| containerChildren = new ArrayList<>(); |
| } |
| |
| /** |
| * Adds a child leaf to this container. |
| * |
| * @param atom The child to add. |
| */ |
| public void add(LeafAtom atom) { |
| leafChildren.add(atom); |
| } |
| |
| /** |
| * Adds a child container to this container. |
| * |
| * @param atom The child to add. |
| */ |
| public void add(ContainerAtom atom) { |
| containerChildren.add(atom); |
| } |
| |
| /** |
| * Returns the child leaf of the given type. |
| * |
| * <p>If no child exists with the given type then null is returned. If multiple children exist |
| * with the given type then the first one to have been added is returned. |
| * |
| * @param type The leaf type. |
| * @return The child leaf of the given type, or null if no such child exists. |
| */ |
| @Nullable |
| public LeafAtom getLeafAtomOfType(int type) { |
| int childrenSize = leafChildren.size(); |
| for (int i = 0; i < childrenSize; i++) { |
| LeafAtom atom = leafChildren.get(i); |
| if (atom.type == type) { |
| return atom; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the child container of the given type. |
| * |
| * <p>If no child exists with the given type then null is returned. If multiple children exist |
| * with the given type then the first one to have been added is returned. |
| * |
| * @param type The container type. |
| * @return The child container of the given type, or null if no such child exists. |
| */ |
| @Nullable |
| public ContainerAtom getContainerAtomOfType(int type) { |
| int childrenSize = containerChildren.size(); |
| for (int i = 0; i < childrenSize; i++) { |
| ContainerAtom atom = containerChildren.get(i); |
| if (atom.type == type) { |
| return atom; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the total number of leaf/container children of this atom with the given type. |
| * |
| * @param type The type of child atoms to count. |
| * @return The total number of leaf/container children of this atom with the given type. |
| */ |
| public int getChildAtomOfTypeCount(int type) { |
| int count = 0; |
| int size = leafChildren.size(); |
| for (int i = 0; i < size; i++) { |
| LeafAtom atom = leafChildren.get(i); |
| if (atom.type == type) { |
| count++; |
| } |
| } |
| size = containerChildren.size(); |
| for (int i = 0; i < size; i++) { |
| ContainerAtom atom = containerChildren.get(i); |
| if (atom.type == type) { |
| count++; |
| } |
| } |
| return count; |
| } |
| |
| @Override |
| public String toString() { |
| return getAtomTypeString(type) |
| + " leaves: " |
| + Arrays.toString(leafChildren.toArray()) |
| + " containers: " |
| + Arrays.toString(containerChildren.toArray()); |
| } |
| } |
| |
| /** Parses the version number out of the additional integer component of a full atom. */ |
| public static int parseFullAtomVersion(int fullAtomInt) { |
| return 0x000000FF & (fullAtomInt >> 24); |
| } |
| |
| /** Parses the atom flags out of the additional integer component of a full atom. */ |
| public static int parseFullAtomFlags(int fullAtomInt) { |
| return 0x00FFFFFF & fullAtomInt; |
| } |
| |
| /** |
| * Converts a numeric atom type to the corresponding four character string. |
| * |
| * @param type The numeric atom type. |
| * @return The corresponding four character string. |
| */ |
| public static String getAtomTypeString(int type) { |
| return "" |
| + (char) ((type >> 24) & 0xFF) |
| + (char) ((type >> 16) & 0xFF) |
| + (char) ((type >> 8) & 0xFF) |
| + (char) (type & 0xFF); |
| } |
| } |