unsafe void AddTag([NotNull] string key, [NotNull] string value)
{
// Optimization - avoid allocating on the heap
Span <byte> keyBytes = stackalloc byte[Encoding.ASCII.GetMaxByteCount(key.Length) + 1];
#if NETSTANDARD2_0
fixed(char *keyAddress = key)
Encoding.ASCII.GetBytes(
keyAddress, key.Length,
(byte *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(keyBytes)), keyBytes.Length);
#else
Encoding.ASCII.GetBytes(key, keyBytes);
#endif
// Use heap allocations for comments > 256kB (usually pictures)
var valueMaxByteCount = Encoding.UTF8.GetMaxByteCount(value.Length) + 1;
var valueBytes = valueMaxByteCount < 0x40000
? stackalloc byte[valueMaxByteCount]
: new byte[valueMaxByteCount];
#if NETSTANDARD2_0
fixed(char *valueAddress = value)
fixed(byte *valueBytesAddress = valueBytes)
Encoding.UTF8.GetBytes(valueAddress, value.Length, valueBytesAddress, valueMaxByteCount);
#else
Encoding.ASCII.GetBytes(value, valueBytes);
#endif
fixed(byte *valueBytesAddress = valueBytes)
SafeNativeMethods.VorbisCommentAddTag(_comment, ref MemoryMarshal.GetReference(keyBytes),
valueBytesAddress);
_unmanagedMemoryAllocated = true;
}
unsafe void AddTag([NotNull] string key, ReadOnlySpan <byte> value)
{
// Optimization - avoid allocating on the heap
Span <byte> keyBytes = stackalloc byte[Encoding.ASCII.GetMaxByteCount(key.Length) + 1];
#if NETSTANDARD2_0
fixed(char *keyAddress = key)
Encoding.ASCII.GetBytes(
keyAddress, key.Length,
(byte *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(keyBytes)), keyBytes.Length);
#else
Encoding.ASCII.GetBytes(key, keyBytes);
#endif
fixed(byte *valueAddress = value)
SafeNativeMethods.VorbisCommentAddTag(_comment, ref MemoryMarshal.GetReference(keyBytes),
valueAddress);
_unmanagedMemoryAllocated = true;
}
unsafe void AddTag(string key, string value)
{
// Optimization - avoid allocating on the heap
Span <byte> keyBytes = stackalloc byte[Encoding.ASCII.GetMaxByteCount(key.Length) + 1];
#if NETSTANDARD2_0
fixed(char *keyAddress = key)
Encoding.ASCII.GetBytes(
keyAddress, key.Length,
(byte *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(keyBytes)), keyBytes.Length);
#else
var keyLength = Encoding.ASCII.GetBytes(key, keyBytes);
#endif
// Use heap allocations for comments > 256kB
var valueMaxByteCount = Encoding.UTF8.GetMaxByteCount(value.Length) + 1;
var valueBytes = valueMaxByteCount < 0x40000
? stackalloc byte[valueMaxByteCount]
: new byte[valueMaxByteCount];
#if NETSTANDARD2_0
fixed(char *valueAddress = value)
fixed(byte *valueBytesAddress = valueBytes)
Encoding.UTF8.GetBytes(valueAddress, value.Length, valueBytesAddress, valueMaxByteCount);
#else
var valueLength = Encoding.UTF8.GetBytes(value, valueBytes);
// Since SkipLocalsInit is set, make sure the strings are null-terminated
keyBytes[keyLength] = 0;
valueBytes[valueLength] = 0;
#endif
fixed(byte *valueBytesAddress = valueBytes)
SafeNativeMethods.VorbisCommentAddTag(_comment, ref MemoryMarshal.GetReference(keyBytes),
valueBytesAddress);
_unmanagedMemoryAllocated = true;
}
