| /* GStreamer DTMF plugin |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_RTP_DTMF_COMMON_H__ |
| #define __GST_RTP_DTMF_COMMON_H__ |
| |
| #include <gst/math-compat.h> |
| |
| #define MIN_INTER_DIGIT_INTERVAL 100 /* ms */ |
| #define MIN_PULSE_DURATION 250 /* ms */ |
| |
| #define MIN_VOLUME 0 |
| #define MAX_VOLUME 36 |
| |
| #define MIN_EVENT 0 |
| #define MAX_EVENT 15 |
| #define MIN_EVENT_STRING "0" |
| #define MAX_EVENT_STRING "15" |
| |
| typedef struct |
| { |
| unsigned event:8; /* Current DTMF event */ |
| #if G_BYTE_ORDER == G_LITTLE_ENDIAN |
| unsigned volume:6; /* power level of the tone, in dBm0 */ |
| unsigned r:1; /* Reserved-bit */ |
| unsigned e:1; /* End-bit */ |
| #elif G_BYTE_ORDER == G_BIG_ENDIAN |
| unsigned e:1; /* End-bit */ |
| unsigned r:1; /* Reserved-bit */ |
| unsigned volume:6; /* power level of the tone, in dBm0 */ |
| #else |
| #error "G_BYTE_ORDER should be big or little endian." |
| #endif |
| unsigned duration:16; /* Duration of digit, in timestamp units */ |
| } GstRTPDTMFPayload; |
| |
| #endif /* __GST_RTP_DTMF_COMMON_H__ */ |
