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typedef struct _RTP_header {
/* byte 0 */
#if (BYTE_ORDER == LITTLE_ENDIAN)
unsigned char csrc_len:4; /* expect 0 */
unsigned char extension:1; /* expect 1, see RTP_OP below */
unsigned char padding:1; /* expect 0 */
unsigned char version:2; /* expect 2 */
#elif (BYTE_ORDER == BIG_ENDIAN)
unsigned char version:2;
unsigned char padding:1;
unsigned char extension:1;
unsigned char csrc_len:4;
#else
#error Neither big nor little
#endif
/* byte 1 */
#if (BYTE_ORDER == LITTLE_ENDIAN)
unsigned char payload:7; /* RTP_PAYLOAD_RTSP */
unsigned char marker:1; /* expect 1 */
#elif (BYTE_ORDER == BIG_ENDIAN)
unsigned char marker:1;
unsigned char payload:7;
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int main(void)
{
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unsigned int *p = (unsigned int *)((int)a +1);¢Ù
printf("%x\n", *p);
return 0;
}
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