Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 1 | #include <stdlib.h> |
| 2 | #include <unistd.h> |
| 3 | #include <stdio.h> |
| 4 | #include <string.h> |
| 5 | #include <err.h> |
| 6 | |
| 7 | #include <osmocom/core/talloc.h> |
| 8 | #include <osmocom/core/application.h> |
| 9 | |
| 10 | #include <openbsc/debug.h> |
| 11 | #include <openbsc/gsm_data.h> |
| 12 | #include <openbsc/mgcp.h> |
| 13 | #include <openbsc/mgcp_internal.h> |
| 14 | |
| 15 | #include "bscconfig.h" |
| 16 | #ifndef BUILD_MGCP_TRANSCODING |
| 17 | #error "Requires MGCP transcoding enabled (see --enable-mgcp-transcoding)" |
| 18 | #endif |
| 19 | |
Jacob Erlbeck | 909fac6 | 2014-05-08 14:08:37 +0200 | [diff] [blame] | 20 | #include "openbsc/mgcp_transcode.h" |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 21 | |
| 22 | static int audio_name_to_type(const char *name) |
| 23 | { |
| 24 | if (!strcasecmp(name, "gsm")) |
| 25 | return 3; |
| 26 | #ifdef HAVE_BCG729 |
| 27 | else if (!strcasecmp(name, "g729")) |
| 28 | return 18; |
| 29 | #endif |
| 30 | else if (!strcasecmp(name, "pcma")) |
| 31 | return 8; |
| 32 | else if (!strcasecmp(name, "l16")) |
| 33 | return 11; |
| 34 | return -1; |
| 35 | } |
| 36 | |
| 37 | int mgcp_get_trans_frame_size(void *state_, int nsamples, int dst); |
| 38 | |
| 39 | int main(int argc, char **argv) |
| 40 | { |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 41 | char buf[4096] = {0x80, 0}; |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 42 | int cc, rc; |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 43 | struct mgcp_rtp_end *dst_end; |
| 44 | struct mgcp_rtp_end *src_end; |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 45 | struct mgcp_trunk_config tcfg = {{0}}; |
| 46 | struct mgcp_endpoint endp = {0}; |
| 47 | struct mgcp_process_rtp_state *state; |
| 48 | int in_size; |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 49 | int in_samples = 160; |
| 50 | int out_samples = 0; |
| 51 | uint32_t ts = 0; |
| 52 | uint16_t seq = 0; |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 53 | |
| 54 | osmo_init_logging(&log_info); |
| 55 | |
| 56 | tcfg.endpoints = &endp; |
| 57 | tcfg.number_endpoints = 1; |
| 58 | endp.tcfg = &tcfg; |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 59 | mgcp_initialize_endp(&endp); |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 60 | |
| 61 | dst_end = &endp.bts_end; |
| 62 | src_end = &endp.net_end; |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 63 | |
| 64 | if (argc <= 2) |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 65 | errx(1, "Usage: {gsm|g729|pcma|l16} {gsm|g729|pcma|l16} [SPP]"); |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 66 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 67 | if ((src_end->codec.payload_type = audio_name_to_type(argv[1])) == -1) |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 68 | errx(1, "invalid input format '%s'", argv[1]); |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 69 | if ((dst_end->codec.payload_type = audio_name_to_type(argv[2])) == -1) |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 70 | errx(1, "invalid output format '%s'", argv[2]); |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 71 | if (argc > 3) |
| 72 | out_samples = atoi(argv[3]); |
| 73 | |
| 74 | if (out_samples) { |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 75 | dst_end->codec.frame_duration_den = dst_end->codec.rate; |
| 76 | dst_end->codec.frame_duration_num = out_samples; |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 77 | dst_end->frames_per_packet = 1; |
| 78 | } |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 79 | |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 80 | rc = mgcp_transcoding_setup(&endp, dst_end, src_end); |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 81 | if (rc < 0) |
| 82 | errx(1, "setup failed: %s", strerror(-rc)); |
| 83 | |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 84 | state = dst_end->rtp_process_data; |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 85 | OSMO_ASSERT(state != NULL); |
| 86 | |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 87 | in_size = mgcp_transcoding_get_frame_size(state, in_samples, 0); |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 88 | OSMO_ASSERT(sizeof(buf) >= in_size + 12); |
| 89 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 90 | buf[1] = src_end->codec.payload_type; |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 91 | *(uint16_t*)(buf+2) = htons(1); |
| 92 | *(uint32_t*)(buf+4) = htonl(0); |
| 93 | *(uint32_t*)(buf+8) = htonl(0xaabbccdd); |
| 94 | |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 95 | while ((cc = read(0, buf + 12, in_size))) { |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 96 | int cont; |
| 97 | int len; |
| 98 | |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 99 | if (cc != in_size) |
| 100 | err(1, "read"); |
| 101 | |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 102 | *(uint16_t*)(buf+2) = htonl(seq); |
| 103 | *(uint32_t*)(buf+4) = htonl(ts); |
| 104 | |
| 105 | seq += 1; |
| 106 | ts += in_samples; |
| 107 | |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 108 | cc += 12; /* include RTP header */ |
| 109 | |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 110 | len = cc; |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 111 | |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 112 | do { |
| 113 | cont = mgcp_transcoding_process_rtp(&endp, dst_end, |
Jacob Erlbeck | 07886d9 | 2014-04-14 11:30:45 +0200 | [diff] [blame] | 114 | buf, &len, sizeof(buf)); |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 115 | if (cont == -EAGAIN) { |
| 116 | fprintf(stderr, "Got EAGAIN\n"); |
| 117 | break; |
| 118 | } |
| 119 | |
| 120 | if (cont < 0) |
| 121 | errx(1, "processing failed: %s", strerror(-cont)); |
| 122 | |
| 123 | len -= 12; /* ignore RTP header */ |
| 124 | |
| 125 | if (write(1, buf + 12, len) != len) |
| 126 | err(1, "write"); |
| 127 | |
| 128 | len = cont; |
| 129 | } while (len > 0); |
Jacob Erlbeck | 136a319 | 2014-03-13 14:33:37 +0100 | [diff] [blame] | 130 | } |
| 131 | return 0; |
| 132 | } |
| 133 | |