Function decode_chunk

lib-src/lv2/serd/src/string.c:178–185

Decode 4 base64 characters to 3 raw bytes. */

   Decode 4 base64 characters to 3 raw bytes.
*/
static inline size_t
decode_chunk(const uint8_t in[4], uint8_t out[3])
{
	out[0] = (uint8_t)(((unmap(in[0]) << 2))        | unmap(in[1]) >> 4);
	out[1] = (uint8_t)(((unmap(in[1]) << 4) & 0xF0) | unmap(in[2]) >> 2);
	out[2] = (uint8_t)(((unmap(in[2]) << 6) & 0xC0) | unmap(in[3]));
	return 1 + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
}

void*
serd_base64_decode(const uint8_t* str, size_t len, size_t* size)