UMIDI_PACKET_SIZE
ep->used += UMIDI_PACKET_SIZE;
while (remain >= UMIDI_PACKET_SIZE) {
buf += UMIDI_PACKET_SIZE;
remain -= UMIDI_PACKET_SIZE;
if (packet->index >= UMIDI_PACKET_SIZE) {
if (packet->index >= UMIDI_PACKET_SIZE) {
while (packet->index < UMIDI_PACKET_SIZE)
memcpy(obuf, packet->buf, UMIDI_PACKET_SIZE);
unsigned char buf[UMIDI_PACKET_SIZE]; /* common/voice packet */