ref: 46d58fc082a8537f9de79342cd7d7d24974c984d
dir: /common/mp4v2/ocidescriptors.cpp/
/* * The contents of this file are subject to the Mozilla Public * License Version 1.1 (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is MPEG4IP. * * The Initial Developer of the Original Code is Cisco Systems Inc. * Portions created by Cisco Systems Inc. are * Copyright (C) Cisco Systems Inc. 2001. All Rights Reserved. * * Contributor(s): * Dave Mackie [email protected] */ #include "mp4common.h" MP4ContentClassDescriptor::MP4ContentClassDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4Integer32Property("classificationEntity")); AddProperty( /* 1 */ new MP4Integer16Property("classificationTable")); AddProperty( /* 2 */ new MP4BytesProperty("contentClassificationData")); } void MP4ContentClassDescriptor::Read(MP4File* pFile) { ReadHeader(pFile); /* byte properties need to know how long they are before reading */ ((MP4BytesProperty*)m_pProperties[2])->SetValueSize(m_size - 6); ReadProperties(pFile); } MP4KeywordDescriptor::MP4KeywordDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4BytesProperty("languageCode", 3)); AddProperty( /* 1 */ new MP4BitfieldProperty("isUTF8String", 1)); AddProperty( /* 2 */ new MP4BitfieldProperty("reserved", 7)); MP4Integer8Property* pCount = new MP4Integer8Property("keywordCount"); AddProperty(pCount); /* 3 */ MP4TableProperty* pTable = new MP4TableProperty("keywords", pCount); AddProperty(pTable); /* 4 */ pTable->AddProperty( /* 4, 0 */ new MP4StringProperty("string", Counted)); SetReadMutate(2); } void MP4KeywordDescriptor::Mutate() { bool utf8Flag = ((MP4BitfieldProperty*)m_pProperties[1])->GetValue(); MP4Property* pProperty = ((MP4TableProperty*)m_pProperties[4])->GetProperty(0); ASSERT(pProperty); ((MP4StringProperty*)pProperty)->SetUnicode(!utf8Flag); } MP4RatingDescriptor::MP4RatingDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4Integer32Property("ratingEntity")); AddProperty( /* 1 */ new MP4Integer16Property("ratingCriteria")); AddProperty( /* 2 */ new MP4BytesProperty("ratingInfo")); } void MP4RatingDescriptor::Read(MP4File* pFile) { ReadHeader(pFile); /* byte properties need to know how long they are before reading */ ((MP4BytesProperty*)m_pProperties[2])->SetValueSize(m_size - 6); ReadProperties(pFile); } MP4LanguageDescriptor::MP4LanguageDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4BytesProperty("languageCode", 3)); } MP4ShortTextDescriptor::MP4ShortTextDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4BytesProperty("languageCode", 3)); AddProperty( /* 1 */ new MP4BitfieldProperty("isUTF8String", 1)); AddProperty( /* 2 */ new MP4BitfieldProperty("reserved", 7)); AddProperty( /* 3 */ new MP4StringProperty("eventName", Counted)); AddProperty( /* 4 */ new MP4StringProperty("eventText", Counted)); SetReadMutate(2); } void MP4ShortTextDescriptor::Mutate() { bool utf8Flag = ((MP4BitfieldProperty*)m_pProperties[1])->GetValue(); ((MP4StringProperty*)m_pProperties[3])->SetUnicode(!utf8Flag); ((MP4StringProperty*)m_pProperties[4])->SetUnicode(!utf8Flag); } MP4ExpandedTextDescriptor::MP4ExpandedTextDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4BytesProperty("languageCode", 3)); AddProperty( /* 1 */ new MP4BitfieldProperty("isUTF8String", 1)); AddProperty( /* 2 */ new MP4BitfieldProperty("reserved", 7)); MP4Integer8Property* pCount = new MP4Integer8Property("itemCount"); AddProperty(pCount); /* 3 */ MP4TableProperty* pTable = new MP4TableProperty("items", pCount); AddProperty(pTable); /* 4 */ pTable->AddProperty( /* Table 0 */ new MP4StringProperty("itemDescription", Counted)); pTable->AddProperty( /* Table 1 */ new MP4StringProperty("itemText", Counted)); AddProperty( /* 5 */ new MP4StringProperty("nonItemText")); ((MP4StringProperty*)m_pProperties[5])->SetExpandedCountedFormat(true); SetReadMutate(2); } void MP4ExpandedTextDescriptor::Mutate() { bool utf8Flag = ((MP4BitfieldProperty*)m_pProperties[1])->GetValue(); MP4Property* pProperty = ((MP4TableProperty*)m_pProperties[4])->GetProperty(0); ASSERT(pProperty); ((MP4StringProperty*)pProperty)->SetUnicode(!utf8Flag); pProperty = ((MP4TableProperty*)m_pProperties[4])->GetProperty(1); ASSERT(pProperty); ((MP4StringProperty*)pProperty)->SetUnicode(!utf8Flag); ((MP4StringProperty*)m_pProperties[5])->SetUnicode(!utf8Flag); } class MP4CreatorTableProperty : public MP4TableProperty { public: MP4CreatorTableProperty(char* name, MP4Integer8Property* pCountProperty) : MP4TableProperty(name, pCountProperty) { }; protected: void ReadEntry(MP4File* pFile, u_int32_t index); void WriteEntry(MP4File* pFile, u_int32_t index); }; MP4CreatorDescriptor::MP4CreatorDescriptor(u_int8_t tag) : MP4Descriptor(tag) { MP4Integer8Property* pCount = new MP4Integer8Property("creatorCount"); AddProperty(pCount); /* 0 */ MP4TableProperty* pTable = new MP4CreatorTableProperty("creators", pCount); AddProperty(pTable); /* 1 */ pTable->AddProperty( /* Table 0 */ new MP4BytesProperty("languageCode", 3)); pTable->AddProperty( /* Table 1 */ new MP4BitfieldProperty("isUTF8String", 1)); pTable->AddProperty( /* Table 2 */ new MP4BitfieldProperty("reserved", 7)); pTable->AddProperty( /* Table 3 */ new MP4StringProperty("name", Counted)); } void MP4CreatorTableProperty::ReadEntry(MP4File* pFile, u_int32_t index) { m_pProperties[0]->Read(pFile, index); m_pProperties[1]->Read(pFile, index); bool utf8Flag = ((MP4BitfieldProperty*)m_pProperties[1])->GetValue(index); ((MP4StringProperty*)m_pProperties[3])->SetUnicode(!utf8Flag); m_pProperties[2]->Read(pFile, index); m_pProperties[3]->Read(pFile, index); } void MP4CreatorTableProperty::WriteEntry(MP4File* pFile, u_int32_t index) { bool utf8Flag = ((MP4BitfieldProperty*)m_pProperties[1])->GetValue(index); ((MP4StringProperty*)m_pProperties[3])->SetUnicode(!utf8Flag); MP4TableProperty::WriteEntry(pFile, index); } MP4CreationDescriptor::MP4CreationDescriptor(u_int8_t tag) : MP4Descriptor(tag) { AddProperty( /* 0 */ new MP4BitfieldProperty("contentCreationDate", 40)); } MP4SmpteCameraDescriptor::MP4SmpteCameraDescriptor() : MP4Descriptor() { MP4Integer8Property* pCount = new MP4Integer8Property("parameterCount"); AddProperty(pCount); MP4TableProperty* pTable = new MP4TableProperty("parameters", pCount); AddProperty(pTable); pTable->AddProperty( new MP4Integer8Property("id")); pTable->AddProperty( new MP4Integer32Property("value")); } MP4UnknownOCIDescriptor::MP4UnknownOCIDescriptor() : MP4Descriptor() { AddProperty( /* 0 */ new MP4BytesProperty("data")); } void MP4UnknownOCIDescriptor::Read(MP4File* pFile) { ReadHeader(pFile); /* byte properties need to know how long they are before reading */ ((MP4BytesProperty*)m_pProperties[0])->SetValueSize(m_size); ReadProperties(pFile); } MP4Descriptor* CreateOCIDescriptor(u_int8_t tag) { MP4Descriptor* pDescriptor = NULL; switch (tag) { case MP4ContentClassDescrTag: pDescriptor = new MP4ContentClassDescriptor(); break; case MP4KeywordDescrTag: pDescriptor = new MP4KeywordDescriptor(); break; case MP4RatingDescrTag: pDescriptor = new MP4RatingDescriptor(); break; case MP4LanguageDescrTag: pDescriptor = new MP4LanguageDescriptor(); break; case MP4ShortTextDescrTag: pDescriptor = new MP4ShortTextDescriptor(); break; case MP4ExpandedTextDescrTag: pDescriptor = new MP4ExpandedTextDescriptor(); break; case MP4ContentCreatorDescrTag: case MP4OCICreatorDescrTag: pDescriptor = new MP4CreatorDescriptor(tag); break; case MP4ContentCreationDescrTag: case MP4OCICreationDescrTag: pDescriptor = new MP4CreationDescriptor(tag); break; case MP4SmpteCameraDescrTag: pDescriptor = new MP4SmpteCameraDescriptor(); break; } if (pDescriptor == NULL) { if (tag >= MP4OCIDescrTagsStart && tag <= MP4OCIDescrTagsEnd) { pDescriptor = new MP4UnknownOCIDescriptor(); pDescriptor->SetTag(tag); } } return pDescriptor; }