26 #if !defined(_SPANDSP_TELEPHONY_H_)
27 #define _SPANDSP_TELEPHONY_H_
29 #if defined(_M_IX86) || defined(_M_X64)
30 #if defined(LIBSPANDSP_EXPORTS)
31 #define SPAN_DECLARE(type) __declspec(dllexport) type
32 #define SPAN_DECLARE_DATA __declspec(dllexport)
34 #define SPAN_DECLARE(type) __declspec(dllimport) type
35 #define SPAN_DECLARE_DATA __declspec(dllimport)
37 #elif defined(SPANDSP_USE_EXPORT_CAPABILITY) && (defined(__GNUC__) || defined(__SUNCC__))
38 #define SPAN_DECLARE(type) __attribute__((visibility("default"))) type
39 #define SPAN_DECLARE_DATA __attribute__((visibility("default")))
41 #define SPAN_DECLARE(type) type
42 #define SPAN_DECLARE_DATA
45 #define span_container_of(ptr, type, member) ({ \
46 const typeof(((type *) 0)->member) *__mptr = (ptr); \
47 (type *) ((char *) __mptr - offsetof(type, member));})
49 #define SAMPLE_RATE 8000
52 #define DBM0_MAX_POWER (3.14f + 3.02f)
53 #define DBM0_MAX_SINE_POWER (3.14f)
55 #define DBOV_MAX_POWER (0.0f)
56 #define DBOV_MAX_SINE_POWER (-3.02f)
59 typedef int (*span_rx_handler_t)(
void *s,
const int16_t amp[],
int len);
62 typedef int (*span_mod_handler_t)(
void *s, int16_t amp[],
int len);
65 typedef int (*span_rx_fillin_handler_t)(
void *s,
int len);
68 typedef int (*span_tx_handler_t)(
void *s, int16_t amp[],
int max_len);
70 #define seconds_to_samples(t) ((t)*SAMPLE_RATE)
71 #define milliseconds_to_samples(t) ((t)*(SAMPLE_RATE/1000))
72 #define microseconds_to_samples(t) ((t)/(1000000/SAMPLE_RATE))
74 #define ms_to_samples(t) ((t)*(SAMPLE_RATE/1000))
75 #define us_to_samples(t) ((t)/(1000000/SAMPLE_RATE))
78 #define FP_Q16_0(x) ((int16_t) (1.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
79 #define FP_Q15_1(x) ((int16_t) (2.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
80 #define FP_Q14_2(x) ((int16_t) (4.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
81 #define FP_Q13_3(x) ((int16_t) (8.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
82 #define FP_Q12_4(x) ((int16_t) (16.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
83 #define FP_Q11_5(x) ((int16_t) (32.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
84 #define FP_Q10_6(x) ((int16_t) (64.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
85 #define FP_Q9_7(x) ((int16_t) (128.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
86 #define FP_Q8_8(x) ((int16_t) (256.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
87 #define FP_Q7_9(x) ((int16_t) (512.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
88 #define FP_Q6_10(x) ((int16_t) (1024.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
89 #define FP_Q5_11(x) ((int16_t) (2048.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
90 #define FP_Q4_12(x) ((int16_t) (4096.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
91 #define FP_Q3_13(x) ((int16_t) (8192.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
92 #define FP_Q2_14(x) ((int16_t) (16384.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
93 #define FP_Q1_15(x) ((int16_t) (32768.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
96 #define FP_Q32_0(x) ((int32_t) (1.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
97 #define FP_Q31_1(x) ((int32_t) (2.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
98 #define FP_Q30_2(x) ((int32_t) (4.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
99 #define FP_Q29_3(x) ((int32_t) (8.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
100 #define FP_Q28_4(x) ((int32_t) (16.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
101 #define FP_Q27_5(x) ((int32_t) (32.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
102 #define FP_Q26_6(x) ((int32_t) (64.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
103 #define FP_Q25_7(x) ((int32_t) (128.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
104 #define FP_Q24_8(x) ((int32_t) (256.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
105 #define FP_Q23_9(x) ((int32_t) (512.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
106 #define FP_Q22_10(x) ((int32_t) (1024.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
107 #define FP_Q21_11(x) ((int32_t) (2048.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
108 #define FP_Q20_12(x) ((int32_t) (4096.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
109 #define FP_Q19_13(x) ((int32_t) (8192.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
110 #define FP_Q18_14(x) ((int32_t) (16384.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
111 #define FP_Q17_15(x) ((int32_t) (32768.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
112 #define FP_Q16_16(x) ((int32_t) (65536.0*1.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
113 #define FP_Q15_17(x) ((int32_t) (65536.0*2.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
114 #define FP_Q14_18(x) ((int32_t) (65536.0*4.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
115 #define FP_Q13_19(x) ((int32_t) (65536.0*8.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
116 #define FP_Q12_20(x) ((int32_t) (65536.0*16.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
117 #define FP_Q11_21(x) ((int32_t) (65536.0*32.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
118 #define FP_Q10_22(x) ((int32_t) (65536.0*64.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
119 #define FP_Q9_23(x) ((int32_t) (65536.0*128.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
120 #define FP_Q8_24(x) ((int32_t) (65536.0*256.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
121 #define FP_Q7_25(x) ((int32_t) (65536.0*512.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
122 #define FP_Q6_26(x) ((int32_t) (65536.0*1024.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
123 #define FP_Q5_27(x) ((int32_t) (65536.0*2048.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
124 #define FP_Q4_28(x) ((int32_t) (65536.0*4096.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
125 #define FP_Q3_29(x) ((int32_t) (65536.0*8192.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
126 #define FP_Q2_30(x) ((int32_t) (65536.0*16384.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
127 #define FP_Q1_31(x) ((int32_t) (65536.0*32768.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
129 #if defined(__cplusplus)
132 #define lrint(x) ((long int) (x))
133 #define lrintf(x) ((long int) (x))