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#include "mp4common.h"
size_t utf16len(const uint16_t *str)
{
size_t size=0;
while (*str++) size++;
return size;
}
void utf16swap(uint16_t *str)
{
while (*str)
{
*str = htons(*str);
str++;
}
}
bool MP4File::Get3GPMetadataString(const char *atom, uint16_t **value)
{
char atomstring[60];
snprintf(atomstring, 60, "moov.udta.%s.metadata", atom);
const uint8_t *str = (const uint8_t *)this->GetStringProperty(atomstring);
if (str)
{
bool reverse=false;
bool utf16=false;
if ((str[0] == 0xFE && str[1] == 0xFF))
{
reverse=true;
utf16=true;
}
if ((str[0] == 0xFF && str[1] == 0xFE))
{
utf16=true;
}
if (utf16)
{
uint16_t *utf16 = (uint16_t *)str;
size_t len = utf16len(utf16);
*value = (uint16_t *)malloc(len*sizeof(uint16_t));
if (!*value)
return false;
memcpy(*value, utf16+1, len*sizeof(uint16_t));
if (reverse)
utf16swap(*value);
}
else
{
int len = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)str, -1, 0, 0);
*value = (uint16_t *)malloc(len * sizeof(uint16_t));
if (*value == NULL)
{
return false;
}
MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)str, -1, (LPWSTR)*value, len);
}
return true;
}
return false;
}
bool MP4File::Set3GPMetadataString(const char *atom, const uint16_t *value)
{
char atomstring[60];
MP4Atom *pMetaAtom;
MP4StringProperty *pMetadataProperty = NULL;
MP4Integer16Property *unknown = NULL;
snprintf(atomstring, 60, "moov.udta.%s", atom);
pMetaAtom = m_pRootAtom->FindAtomMP4(atomstring);
if (!pMetaAtom)
{
(void)AddDescendantAtoms("moov", atomstring+5);
//if (!CreateMetadataAtom(atom))
//return false;
pMetaAtom = m_pRootAtom->FindAtomMP4(atomstring);
if (pMetaAtom == NULL) return false;
}
snprintf(atomstring, 60, "%s.language", atom);
ASSERT(pMetaAtom->FindProperty(atomstring,
(MP4Property**)&unknown));
ASSERT(unknown);
unknown->SetValue(0x15C7);
snprintf(atomstring, 60, "%s.metadata", atom);
ASSERT(pMetaAtom->FindProperty(atomstring,
(MP4Property**)&pMetadataProperty));
ASSERT(pMetadataProperty);
pMetadataProperty->SetUnicode(true);
size_t lenWithBOM = utf16len(value) + 1;
uint16_t *newVal = (uint16_t *)malloc((lenWithBOM+1) * sizeof(uint16_t));
newVal[0]=0xFEFF;
memcpy(newVal+1, value, lenWithBOM*sizeof(uint16_t));
pMetadataProperty->SetValue((char *)newVal, 0);
free(newVal);
return true;
}
bool MP4File::Get3GPMetadataInteger(const char *atom, uint64_t *value)
{
char atomstring[60];
snprintf(atomstring, 60, "moov.udta.%s.metadata", atom);
MP4Property* pProperty;
u_int32_t index;
FindIntegerProperty(atomstring, &pProperty, &index);
if (pProperty)
{
*value = ((MP4IntegerProperty*)pProperty)->GetValue(index);
return true;
}
return false;
}
bool MP4File::Set3GPMetadataInteger(const char *atom, uint64_t value)
{
char atomstring[60] = {0};
MP4Atom *pMetaAtom;
MP4IntegerProperty *pMetadataProperty = NULL;
snprintf(atomstring, 60, "moov.udta.%s", atom);
pMetaAtom = m_pRootAtom->FindAtomMP4(atomstring);
if (!pMetaAtom)
{
(void)AddDescendantAtoms("moov", atomstring+5);
//if (!CreateMetadataAtom(atom))
//return false;
pMetaAtom = m_pRootAtom->FindAtomMP4(atomstring);
if (pMetaAtom == NULL) return false;
}
snprintf(atomstring, 60, "%s.metadata", atom);
ASSERT(pMetaAtom->FindProperty(atomstring,
(MP4Property**)&pMetadataProperty));
ASSERT(pMetadataProperty);
pMetadataProperty->SetValue(value, 0);
return true;
}
bool MP4File::Delete3GPMetadataAtom(const char* name)
{
MP4Atom *pMetaAtom = NULL;
char s[256];
snprintf(s, 256, "moov.udta.%s", name);
pMetaAtom = m_pRootAtom->FindAtomMP4(s);
/* if it exists, delete it */
if (pMetaAtom)
{
MP4Atom *pParent = pMetaAtom->GetParentAtom();
pParent->DeleteChildAtom(pMetaAtom);
delete pMetaAtom;
return true;
}
return false;
}
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