private final ByteBuffer copyToByteBuffer(Buffer buf) {
if (buf instanceof ByteBuffer) {
if (buf.position() == 0) {
return (ByteBuffer) buf;
}
return Buffers.copyByteBuffer((ByteBuffer) buf);
} else if (buf instanceof ShortBuffer) {
return Buffers.copyShortBufferAsByteBuffer((ShortBuffer) buf);
} else if (buf instanceof IntBuffer) {
return Buffers.copyIntBufferAsByteBuffer((IntBuffer) buf);
} else if (buf instanceof FloatBuffer) {
return Buffers.copyFloatBufferAsByteBuffer((FloatBuffer) buf);
} else {
throw new IllegalArgumentException(
"Unsupported buffer type (must be one of byte, short, int, or float)");
}
}
