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Language support for MP4

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This commit is contained in:
Thulinma 2016-07-18 10:38:26 +02:00
parent 3844dac4fd
commit 0a2a749566
3 changed files with 33 additions and 8 deletions
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35
lib/mp4_generic.cpp
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@ -2241,20 +2241,43 @@ namespace MP4 {
void MDHD::setLanguage(uint16_t newLanguage) {
if (getVersion() == 0) {
setInt16(newLanguage & 0x7F, 20);
setInt16(newLanguage & 0x7FFF, 20);
} else {
setInt16(newLanguage & 0x7F, 32);
setInt16(newLanguage & 0x7FFF, 32);
}
}
uint16_t MDHD::getLanguage() {
uint16_t MDHD::getLanguageInt() {
if (getVersion() == 0) {
return getInt16(20) & 0x7F;
return getInt16(20) & 0x7FFF;
} else {
return getInt16(32) & 0x7F;
return getInt16(32) & 0x7FFF;
}
}
void MDHD::setLanguage(const std::string & newLanguage) {
if (newLanguage.size() != 3){
setLanguage("und");
return;
}
uint16_t newLang = 0;
newLang += (newLanguage[0] - 0x60) & 0x1F;
newLang <<= 5;
newLang += (newLanguage[1] - 0x60) & 0x1F;
newLang <<= 5;
newLang += (newLanguage[2] - 0x60) & 0x1F;
setLanguage(newLang);
}
std::string MDHD::getLanguage() {
uint16_t lInt = getLanguageInt();
std::string ret;
ret += (char)(((lInt & 0x7C00) >> 10) + 0x60);
ret += (char)(((lInt & 0x3E0) >> 5) + 0x60);
ret += (char)((lInt & 0x1F) + 0x60);
return ret;
}
std::string MDHD::toPrettyString(uint32_t indent) {
std::stringstream r;
r << std::string(indent, ' ') << "[mdhd] Media Header Box (" << boxedSize() << ")" << std::endl;
@ -2263,7 +2286,7 @@ namespace MP4 {
r << std::string(indent + 1, ' ') << "ModificationTime: " << getModificationTime() << std::endl;
r << std::string(indent + 1, ' ') << "TimeScale: " << getTimeScale() << std::endl;
r << std::string(indent + 1, ' ') << "Duration: " << getDuration() << std::endl;
r << std::string(indent + 1, ' ') << "Language: 0x" << std::hex << getLanguage() << std::dec << std::endl;
r << std::string(indent + 1, ' ') << "Language: " << getLanguage() << std::endl;
return r.str();
}

5
lib/mp4_generic.h
View file

@ -463,9 +463,10 @@ namespace MP4 {
uint32_t getTimeScale();
void setDuration(uint64_t newDuration);
uint64_t getDuration();
///\todo return language properly
void setLanguage(uint16_t newLanguage);
uint16_t getLanguage();
uint16_t getLanguageInt();
void setLanguage(const std::string & newLanguage);
std::string getLanguage();
std::string toPrettyString(uint32_t indent = 0);
};

1
src/output/output_progressive_mp4.cpp
View file

@ -70,6 +70,7 @@ namespace Mist {
unsigned int mdiaOffset = 0;
{
MP4::MDHD mdhdBox(thisTrack.lastms - thisTrack.firstms);
mdhdBox.setLanguage(thisTrack.lang);
mdiaBox.setContent(mdhdBox, mdiaOffset++);
}//MDHD box
{