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00023 #ifndef _ASTERISK_DSP_H
00024 #define _ASTERISK_DSP_H
00025
00026 #define DSP_FEATURE_SILENCE_SUPPRESS (1 << 0)
00027 #define DSP_FEATURE_BUSY_DETECT (1 << 1)
00028 #define DSP_FEATURE_DTMF_DETECT (1 << 3)
00029 #define DSP_FEATURE_FAX_DETECT (1 << 4)
00030
00031 #define DSP_DIGITMODE_DTMF 0
00032 #define DSP_DIGITMODE_MF 1
00033
00034 #define DSP_DIGITMODE_NOQUELCH (1 << 8)
00035 #define DSP_DIGITMODE_MUTECONF (1 << 9)
00036 #define DSP_DIGITMODE_MUTEMAX (1 << 10)
00037 #define DSP_DIGITMODE_RELAXDTMF (1 << 11)
00038
00039 #define DSP_PROGRESS_TALK (1 << 16)
00040 #define DSP_PROGRESS_RINGING (1 << 17)
00041 #define DSP_PROGRESS_BUSY (1 << 18)
00042 #define DSP_PROGRESS_CONGESTION (1 << 19)
00043 #define DSP_FEATURE_CALL_PROGRESS (DSP_PROGRESS_TALK | DSP_PROGRESS_RINGING | DSP_PROGRESS_BUSY | DSP_PROGRESS_CONGESTION)
00044
00045 #define DSP_TONE_STATE_SILENCE 0
00046 #define DSP_TONE_STATE_RINGING 1
00047 #define DSP_TONE_STATE_DIALTONE 2
00048 #define DSP_TONE_STATE_TALKING 3
00049 #define DSP_TONE_STATE_BUSY 4
00050 #define DSP_TONE_STATE_SPECIAL1 5
00051 #define DSP_TONE_STATE_SPECIAL2 6
00052 #define DSP_TONE_STATE_SPECIAL3 7
00053 #define DSP_TONE_STATE_HUNGUP 8
00054
00055 struct ast_dsp;
00056
00057 struct ast_dsp *ast_dsp_new(void);
00058 void ast_dsp_free(struct ast_dsp *dsp);
00059
00060
00061 void ast_dsp_set_threshold(struct ast_dsp *dsp, int threshold);
00062
00063
00064 void ast_dsp_set_busy_count(struct ast_dsp *dsp, int cadences);
00065
00066
00067 void ast_dsp_set_busy_compare(struct ast_dsp *dsp, int compare);
00068
00069
00070 void ast_dsp_set_busy_pattern(struct ast_dsp *dsp, int tonelength, int quietlength, int fuzzy);
00071
00072
00073 int ast_dsp_call_progress(struct ast_dsp *dsp, struct ast_frame *inf);
00074
00075
00076 int ast_dsp_set_call_progress_zone(struct ast_dsp *dsp, char *zone);
00077
00078
00079
00080 struct ast_frame *ast_dsp_process(struct ast_channel *chan, struct ast_dsp *dsp, struct ast_frame *inf);
00081
00082
00083
00084 int ast_dsp_silence(struct ast_dsp *dsp, struct ast_frame *f, int *totalsilence);
00085
00086
00087
00088 int ast_dsp_busydetect(struct ast_dsp *dsp);
00089
00090
00091 int ast_dsp_digitdetect(struct ast_dsp *dsp, struct ast_frame *f);
00092
00093
00094 void ast_dsp_reset(struct ast_dsp *dsp);
00095
00096
00097 void ast_dsp_digitreset(struct ast_dsp *dsp);
00098
00099
00100 void ast_dsp_set_features(struct ast_dsp *dsp, int features);
00101
00102
00103 int ast_dsp_getdigits(struct ast_dsp *dsp, char *buf, int max);
00104
00105
00106 int ast_dsp_digitmode(struct ast_dsp *dsp, int digitmode);
00107
00108
00109 int ast_dsp_get_tstate(struct ast_dsp *dsp);
00110
00111
00112 int ast_dsp_get_tcount(struct ast_dsp *dsp);
00113
00114 #endif