FreeCalypso > hg > sipout-test-utils

annotate test-voice/rtp_tx.c @ 14:f96153d15889

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sipout-test-voice: implement play from file
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 May 2024 22:10:38 -0800
parents 059b79c9f0c3
children 71f01a834820
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1 /*
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2 * In this module we implement outgoing RTP stream generation.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/file.h>
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7 #include <sys/stat.h>
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8 #include <sys/socket.h>
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9 #include <sys/time.h>
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10 #include <netinet/in.h>
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11 #include <stdio.h>
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12 #include <stdint.h>
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include <strings.h>
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16 #include <unistd.h>
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17 #include "../include/tmgw_const.h"
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18 #include "../include/rtp_defs.h"
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19 #include "../libutil/osmo_bits.h"
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20
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21 extern struct sockaddr_in rtp_local_addr, rtp_remote_addr;
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22 extern int rtp_udp_fd, rtcp_udp_fd, pcma_selected;
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23 extern struct timeval cur_event_time;
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24
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25 static const uint8_t dmw_alaw[8] =
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26 {0x34, 0x21, 0x21, 0x34, 0xB4, 0xA1, 0xA1, 0xB4};
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27 static const uint8_t dmw_ulaw[8] =
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28 {0x1E, 0x0B, 0x0B, 0x1E, 0x9E, 0x8B, 0x8B, 0x9E};
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29
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30 static uint32_t rtp_ssrc;
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31 static uint32_t rtp_out_ts;
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32 static uint16_t rtp_out_seq;
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33
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34 static uint8_t pcm_fill_octet;
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35 static int dmw_active;
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36
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37 static uint8_t *play_buffer;
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38 static unsigned play_buf_nframes, play_buf_ptr;
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39 static int play_loop;
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40
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41 static uint16_t tfo_fill_buf[9], tfo_req_buf[7];
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42 static uint16_t *is_out_ptr;
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43 static unsigned is_out_count;
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44 static int tfo_stop_req;
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45
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46 void
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47 assign_rtpout_ssrc()
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48 {
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49 rtp_ssrc = cur_event_time.tv_sec ^ cur_event_time.tv_usec ^ getpid();
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50 }
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51
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52 void
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53 init_pcm_fill_octet()
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54 {
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55 if (pcma_selected)
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56 pcm_fill_octet = 0xD5;
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57 else
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58 pcm_fill_octet = 0xFF;
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59 }
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60
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61 void
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62 prepare_tfo_fill()
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63 {
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64 tfo_fill_buf[0] = 0x15A;
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65 tfo_fill_buf[1] = 0x1A9;
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66 tfo_fill_buf[2] = 0x129;
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67 tfo_fill_buf[3] = 0x15A;
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68 tfo_fill_buf[4] = 0x1A9;
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69 tfo_fill_buf[5] = 0x129;
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70 tfo_fill_buf[6] = 0x15A;
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71 tfo_fill_buf[7] = 0x1A9;
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72 tfo_fill_buf[8] = 0x129;
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73 }
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74
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75 static void
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76 insert_is_msg(payload, word)
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77 uint8_t *payload;
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78 uint16_t word;
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79 {
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80 ubit_t is_bits[10];
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81 uint8_t *bytep;
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82 unsigned n;
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83
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84 uint16_to_bits(word, is_bits, 10);
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85 for (n = 0; n < 10; n++) {
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86 bytep = payload + n * 16;
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87 *bytep &= 0xFE;
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88 *bytep |= is_bits[n];
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89 }
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90 }
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91
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92 static void
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93 fill_with_dmw(buf)
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94 uint8_t *buf;
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95 {
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96 const uint8_t *src;
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97 unsigned n;
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98
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99 if (pcma_selected)
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100 src = dmw_alaw;
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101 else
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102 src = dmw_ulaw;
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103 for (n = 0; n < 20; n++) {
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104 memcpy(buf, src, 8);
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105 buf += 8;
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106 }
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107 }
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108
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109 static void
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110 fill_with_play(outbuf)
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111 uint8_t *outbuf;
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112 {
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113 memcpy(outbuf, play_buffer + play_buf_ptr * 160, 160);
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114 play_buf_ptr++;
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115 if (play_buf_ptr < play_buf_nframes)
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116 return;
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117 if (play_loop)
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118 play_buf_ptr = 0;
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119 else {
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120 free(play_buffer);
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121 play_buffer = 0;
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122 }
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123 }
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124
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125 void
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126 generate_rtp_packet()
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127 {
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128 struct rtp_packet pkt;
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129 socklen_t addrlen;
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130
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131 pkt.v_p_x_cc = 0x80;
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132 pkt.m_pt = pcma_selected ? PSTN_CODEC_PCMA : PSTN_CODEC_PCMU;
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parents:
diff changeset
133 pkt.seq = htons(rtp_out_seq++);
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 pkt.tstamp = htonl(rtp_out_ts);
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 rtp_out_ts += 160;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 pkt.ssrc = rtp_ssrc;
14
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
137 if (play_buffer)
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
138 fill_with_play(pkt.payload);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
139 else if (dmw_active)
13
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
140 fill_with_dmw(pkt.payload);
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
141 else
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
142 memset(pkt.payload, pcm_fill_octet, RTP_MAX_PAYLOAD);
0
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 if (is_out_count) {
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 insert_is_msg(pkt.payload, *is_out_ptr++);
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 is_out_count--;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 if (!is_out_count && !tfo_stop_req) {
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 is_out_ptr = tfo_req_buf;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 is_out_count = 7;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 }
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 }
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 addrlen = sizeof(struct sockaddr_in);
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 sendto(rtp_udp_fd, &pkt, RTP_PACKET_SIZE_PSTN, 0,
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 (struct sockaddr *) &rtp_remote_addr, addrlen);
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 }
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 void
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 set_pcm_fill_octet(oct)
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 unsigned oct;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 {
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 pcm_fill_octet = oct;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 }
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 void
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 send_tfo_req(sig, codec)
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 unsigned sig, codec;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 {
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 tfo_req_buf[0] = 0x15A;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 tfo_req_buf[1] = 0x1A9;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 tfo_req_buf[2] = 0x05D;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 tfo_req_buf[3] = 0x14E;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 tfo_req_buf[4] = 0x14B;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 encode_tfo_ext_words(sig, codec, 0, tfo_req_buf + 5);
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 is_out_ptr = tfo_fill_buf;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 is_out_count = 9;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 tfo_stop_req = 0;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 }
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 void
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 stop_tfo_out()
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 {
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 tfo_stop_req = 1;
35c0d9f03c0a beginning with sipout-test-voice,
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 }
13
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
183
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
184 void
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
185 cmd_dmw_on()
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
186 {
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
187 dmw_active = 1;
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
188 }
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
189
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
190 void
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
191 cmd_dmw_off()
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
192 {
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
193 dmw_active = 0;
059b79c9f0c3 sipout-test-voice: add DMW output mode
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
194 }
14
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
195
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
196 void
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
197 play_file_cmdop(filename, loop)
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
198 char *filename;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
199 {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
200 int fd;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
201 struct stat st;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
202
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
203 if (play_buffer) {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
204 fprintf(stderr, "error: file play already in progress\n");
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
205 return;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
206 }
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
207 fd = open(filename, O_RDONLY);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
208 if (fd < 0) {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
209 perror(filename);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
210 return;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
211 }
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
212 fstat(fd, &st);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
213 if (!S_ISREG(st.st_mode)) {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
214 close(fd);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
215 fprintf(stderr, "error: %s is not a regular file\n", filename);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
216 return;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
217 }
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
218 if (st.st_size % 160) {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
219 close(fd);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
220 fprintf(stderr,
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
221 "error: size of %s is not a multiple of 160 bytes\n",
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
222 filename);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
223 return;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
224 }
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
225 play_buffer = malloc(st.st_size);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
226 if (!play_buffer) {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
227 close(fd);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
228 fprintf(stderr, "unable to malloc buffer for %s\n", filename);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
229 return;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
230 }
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
231 read(fd, play_buffer, st.st_size);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
232 close(fd);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
233 play_buf_nframes = st.st_size / 160;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
234 play_buf_ptr = 0;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
235 play_loop = loop;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
236 }
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
237
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
238 void
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
239 play_file_stop()
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
240 {
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
241 if (!play_buffer)
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
242 return;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
243 free(play_buffer);
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
244 play_buffer = 0;
f96153d15889 sipout-test-voice: implement play from file
Mychaela Falconia <falcon@freecalypso.org>
parents: 13
diff changeset
245 }