inline void media_attributes::attribute_set<>(const std::string& attribute_name, const std::string& value)
{
auto buffer = attribute_blob_get(attribute_name);
if (buffer)
{
if (buffer.length_get() == value.size() &&
!memcmp(buffer.data(), static_cast<void*>(const_cast<char*>(value.c_str())), value.size()))
{
return;
}
}
if (!buffer || buffer.length_get() != value.size())
{
buffer = io::memory_buffer(value.size());
}
memcpy(buffer.data(), value.c_str(), value.size());
attribute_blob_set(attribute_name, buffer);
}
void attribute_set(const std::string& attribute_name, const T& value)
{
auto buffer = attribute_blob_get(attribute_name);
if (buffer)
{
if (buffer.length_get() == sizeof(T) &&
!memcmp(buffer.data(), static_cast<void*>(const_cast<T*>(std::addressof(value))), sizeof(T)))
{
return;
}
}
if (!buffer || buffer.length_get() != sizeof(T))
{
buffer = io::memory_buffer(sizeof(T));
}
memcpy(buffer.data(), std::addressof(value), sizeof(T));
attribute_blob_set(attribute_name, buffer);
}
void write(uint8_t* source, size_t position, size_t size)
{
if (size > length_get() + position)
{
throw std::runtime_error("destination buffer size larger than buffer length");
}
if (source == nullptr)
{
throw std::runtime_error("invalid source pointer");
}
memcpy(_buffer.data() + position, source, size);
}
void read(uint8_t* destination, size_t position, size_t size)
{
if (size > length_get() + position)
{
throw std::runtime_error("destination buffer size larger than buffer length");
}
if (destination == nullptr)
{
throw std::runtime_error("invalid destination pointer");
}
memcpy(destination, _buffer.data() + position, size);
}
