2 #ifndef __GST_RTP_DTMF_COMMON_H__
3 #define __GST_RTP_DTMF_COMMON_H__
5 #define MIN_INTER_DIGIT_INTERVAL 100 /* ms */
6 #define MIN_PULSE_DURATION 250 /* ms */
13 #define MIN_EVENT_STRING "0"
14 #define MAX_EVENT_STRING "15"
17 #define M_PI 3.14159265358979323846 /* pi */
22 unsigned event:8; /* Current DTMF event */
23 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
24 unsigned volume:6; /* power level of the tone, in dBm0 */
25 unsigned r:1; /* Reserved-bit */
26 unsigned e:1; /* End-bit */
27 #elif G_BYTE_ORDER == G_BIG_ENDIAN
28 unsigned e:1; /* End-bit */
29 unsigned r:1; /* Reserved-bit */
30 unsigned volume:6; /* power level of the tone, in dBm0 */
32 #error "G_BYTE_ORDER should be big or little endian."
34 unsigned duration:16; /* Duration of digit, in timestamp units */
37 #endif /* __GST_RTP_DTMF_COMMON_H__ */