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comparison sip-manual-out/rtp_rx.c @ 200:834656633fa0

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sip-manual-out TFO: use is_hunt_fill mechanism
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 02 Apr 2023 17:44:23 -0800
parents f8a33603288f
children
comparison
equal deleted inserted replaced
199:e6c7ced3c031 200:834656633fa0
30 static const uint8_t hdr_pattern[20] = {0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 30 static const uint8_t hdr_pattern[20] = {0, 1, 0, 1, 0, 1, 1, 0, 1, 0,
31 0, 1, 1, 0, 1, 0, 1, 0, 0, 1}; 31 0, 1, 1, 0, 1, 0, 1, 0, 0, 1};
32 32
33 static uint8_t is_hunt_buf[320]; 33 static uint8_t is_hunt_buf[320];
34 static int is_state; 34 static int is_state;
35 static unsigned is_offset, is_bit_count; 35 static unsigned is_offset, is_bit_count, is_hunt_fill;
36 static uint32_t is_rx_word; 36 static uint32_t is_rx_word;
37 37
38 static void 38 static void
39 reset_is_hunt() 39 reset_is_hunt()
40 { 40 {
41 memset(is_hunt_buf, 0xFF, 320);
42 is_state = 0; 41 is_state = 0;
42 is_hunt_fill = 0;
43 } 43 }
44 44
45 static void 45 static void
46 is_rx_hunt(input_pos) 46 is_rx_hunt(input_pos)
47 unsigned input_pos; 47 unsigned input_pos;
61 input_pos * 16 + offset); 61 input_pos * 16 + offset);
62 is_offset = offset; 62 is_offset = offset;
63 is_state = 1; 63 is_state = 1;
64 is_bit_count = 0; 64 is_bit_count = 0;
65 is_rx_word = 0; 65 is_rx_word = 0;
66 is_hunt_fill = 0;
66 } 67 }
67 68
68 static void 69 static void
69 is_process_cmd() 70 is_process_cmd()
70 { 71 {
142 unsigned new_bit; 143 unsigned new_bit;
143 144
144 memmove(is_hunt_buf, is_hunt_buf + 16, 304); 145 memmove(is_hunt_buf, is_hunt_buf + 16, 304);
145 memcpy(is_hunt_buf + 304, input, 16); 146 memcpy(is_hunt_buf + 304, input, 16);
146 if (!is_state) { 147 if (!is_state) {
147 is_rx_hunt(input_pos); 148 if (is_hunt_fill < 20)
149 is_hunt_fill++;
150 if (is_hunt_fill == 20)
151 is_rx_hunt(input_pos);
148 return; 152 return;
149 } 153 }
150 new_bit = input[is_offset] & 1; 154 new_bit = input[is_offset] & 1;
151 is_rx_word <<= 1; 155 is_rx_word <<= 1;
152 is_rx_word |= new_bit; 156 is_rx_word |= new_bit;