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
54typedef uint64_t span_timestamp_t;
57typedef int32_t span_sample_timer_t;
60typedef int (*span_rx_handler_t)(
void *s,
const int16_t amp[],
int len);
63typedef int (*span_mod_handler_t)(
void *s, int16_t amp[],
int len);
66typedef int (*span_rx_fillin_handler_t)(
void *s,
int len);
69typedef int (*span_tx_handler_t)(
void *s, int16_t amp[],
int max_len);
71#define seconds_to_samples(t) ((t)*SAMPLE_RATE)
72#define milliseconds_to_samples(t) ((t)*(SAMPLE_RATE/1000))
73#define microseconds_to_samples(t) ((t)/(1000000/SAMPLE_RATE))
76#define FP_Q16_0(x) ((int16_t) (1.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
77#define FP_Q15_1(x) ((int16_t) (2.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
78#define FP_Q14_2(x) ((int16_t) (4.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
79#define FP_Q13_3(x) ((int16_t) (8.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
80#define FP_Q12_4(x) ((int16_t) (16.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
81#define FP_Q11_5(x) ((int16_t) (32.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
82#define FP_Q10_6(x) ((int16_t) (64.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
83#define FP_Q9_7(x) ((int16_t) (128.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
84#define FP_Q8_8(x) ((int16_t) (256.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
85#define FP_Q7_9(x) ((int16_t) (512.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
86#define FP_Q6_10(x) ((int16_t) (1024.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
87#define FP_Q5_11(x) ((int16_t) (2048.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
88#define FP_Q4_12(x) ((int16_t) (4096.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
89#define FP_Q3_13(x) ((int16_t) (8192.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
90#define FP_Q2_14(x) ((int16_t) (16384.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
91#define FP_Q1_15(x) ((int16_t) (32768.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
94#define FP_Q32_0(x) ((int32_t) (1.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
95#define FP_Q31_1(x) ((int32_t) (2.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
96#define FP_Q30_2(x) ((int32_t) (4.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
97#define FP_Q29_3(x) ((int32_t) (8.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
98#define FP_Q28_4(x) ((int32_t) (16.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
99#define FP_Q27_5(x) ((int32_t) (32.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
100#define FP_Q26_6(x) ((int32_t) (64.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
101#define FP_Q25_7(x) ((int32_t) (128.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
102#define FP_Q24_8(x) ((int32_t) (256.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
103#define FP_Q23_9(x) ((int32_t) (512.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
104#define FP_Q22_10(x) ((int32_t) (1024.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
105#define FP_Q21_11(x) ((int32_t) (2048.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
106#define FP_Q20_12(x) ((int32_t) (4096.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
107#define FP_Q19_13(x) ((int32_t) (8192.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
108#define FP_Q18_14(x) ((int32_t) (16384.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
109#define FP_Q17_15(x) ((int32_t) (32768.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
110#define FP_Q16_16(x) ((int32_t) (65536.0*1.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
111#define FP_Q15_17(x) ((int32_t) (65536.0*2.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
112#define FP_Q14_18(x) ((int32_t) (65536.0*4.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
113#define FP_Q13_19(x) ((int32_t) (65536.0*8.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
114#define FP_Q12_20(x) ((int32_t) (65536.0*16.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
115#define FP_Q11_21(x) ((int32_t) (65536.0*32.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
116#define FP_Q10_22(x) ((int32_t) (65536.0*64.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
117#define FP_Q9_23(x) ((int32_t) (65536.0*128.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
118#define FP_Q8_24(x) ((int32_t) (65536.0*256.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
119#define FP_Q7_25(x) ((int32_t) (65536.0*512.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
120#define FP_Q6_26(x) ((int32_t) (65536.0*1024.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
121#define FP_Q5_27(x) ((int32_t) (65536.0*2048.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
122#define FP_Q4_28(x) ((int32_t) (65536.0*4096.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
123#define FP_Q3_29(x) ((int32_t) (65536.0*8192.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
124#define FP_Q2_30(x) ((int32_t) (65536.0*16384.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
125#define FP_Q1_31(x) ((int32_t) (65536.0*32768.0*(x) + (((x) >= 0.0) ? 0.5 : -0.5)))
128#define DBM0_MAX_POWER (3.14f + 3.02f)
129#define DBM0_MAX_SINE_POWER (3.14f)
131#define DBOV_MAX_POWER (0.0f)
132#define DBOV_MAX_SINE_POWER (-3.02f)
134#if defined(SPANDSP_USE_FIXED_POINT)
135#define db_to_power_ratio(val) powf(10.0f, (val)/10.0f)
136#define db_to_amplitude_ratio(val) powf(10.0f, (val)/20.0f)
137#define power_ratio_to_db(val) (10.0f*log10f(val))
138#define amplitude_ratio_to_db(val) (20.0f*log10f(val))
140#define db_to_power_ratio(val) powf(10.0f, (val)/10.0f)
141#define db_to_amplitude_ratio(val) powf(10.0f, (val)/20.0f)
142#define power_ratio_to_db(val) (10.0f*log10f(val))
143#define amplitude_ratio_to_db(val) (20.0f*log10f(val))
148#if defined(SPANDSP_USE_FIXED_POINT)
149#define energy_threshold_dbm0(len,thresh) (int) (((len)*256.0f*256.0f/2.0f)*powf(10.0f, ((thresh) - DBM0_MAX_SINE_POWER)/10.0f))
150#define energy_threshold_dbmov(len,thresh) (int) (((len)*256.0f*256.0f/2.0f)*powf(10.0f, ((thresh) - DBMOV_MAX_SINE_POWER)/10.0f))
152#define energy_threshold_dbm0(len,thresh) (float) (((len)*32768.0f*32768.0f/2.0f)*powf(10.0f, ((thresh) - DBM0_MAX_SINE_POWER)/10.0f))
153#define energy_threshold_dbmov(len,thresh) (float) (((len)*32768.0f*32768.0f/2.0f)*powf(10.0f, ((thresh) - DBMOV_MAX_SINE_POWER)/10.0f))
156#if defined(__cplusplus)
159#define lrint(x) ((long int) (x))
160#define lrintf(x) ((long int) (x))