34 lines
744 B
Go
34 lines
744 B
Go
package srtp
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import "bytes"
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// Grow the buffer size to the given number of bytes.
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func growBufferSize(buf []byte, size int) []byte {
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if size <= cap(buf) {
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return buf[:size]
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}
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buf2 := make([]byte, size)
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copy(buf2, buf)
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return buf2
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}
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// Check if buffers match, if not allocate a new buffer and return it
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func allocateIfMismatch(dst, src []byte) []byte {
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if dst == nil {
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dst = make([]byte, len(src))
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copy(dst, src)
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} else if !bytes.Equal(dst, src) { // bytes.Equal returns on ref equality, no optimization needed
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extraNeeded := len(src) - len(dst)
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if extraNeeded > 0 {
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dst = append(dst, make([]byte, extraNeeded)...)
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} else if extraNeeded < 0 {
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dst = dst[:len(dst)+extraNeeded]
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}
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copy(dst, src)
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}
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return dst
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}
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