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