| 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 | |
| 20 | #include "src/osmo-bsc_mgcp/mgcp_transcode.h" |
| 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 | { |
| 41 | char buf[4096] = {0}; |
| 42 | int cc, rc; |
| 43 | struct mgcp_rtp_end dst_end = {0}; |
| 44 | struct mgcp_rtp_end src_end = {0}; |
| 45 | struct mgcp_trunk_config tcfg = {{0}}; |
| 46 | struct mgcp_endpoint endp = {0}; |
| 47 | struct mgcp_process_rtp_state *state; |
| 48 | int in_size; |
| 49 | |
| 50 | osmo_init_logging(&log_info); |
| 51 | |
| 52 | tcfg.endpoints = &endp; |
| 53 | tcfg.number_endpoints = 1; |
| 54 | endp.tcfg = &tcfg; |
| 55 | |
| 56 | if (argc <= 2) |
| 57 | errx(1, "Usage: {gsm|g729|pcma|l16} {gsm|g729|pcma|l16}"); |
| 58 | |
| 59 | if ((src_end.payload_type = audio_name_to_type(argv[1])) == -1) |
| 60 | errx(1, "invalid input format '%s'", argv[1]); |
| 61 | if ((dst_end.payload_type = audio_name_to_type(argv[2])) == -1) |
| 62 | errx(1, "invalid output format '%s'", argv[2]); |
| 63 | |
| 64 | rc = mgcp_transcoding_setup(&endp, &dst_end, &src_end); |
| 65 | if (rc < 0) |
| 66 | errx(1, "setup failed: %s", strerror(-rc)); |
| 67 | |
| 68 | state = dst_end.rtp_process_data; |
| 69 | OSMO_ASSERT(state != NULL); |
| 70 | |
| 71 | in_size = mgcp_transcoding_get_frame_size(state, 160, 0); |
| 72 | OSMO_ASSERT(sizeof(buf) >= in_size + 12); |
| 73 | |
| 74 | while ((cc = read(0, buf + 12, in_size))) { |
| 75 | if (cc != in_size) |
| 76 | err(1, "read"); |
| 77 | |
| 78 | cc += 12; /* include RTP header */ |
| 79 | |
| 80 | rc = mgcp_transcoding_process_rtp(&endp, &dst_end, |
| 81 | buf, &cc, sizeof(buf)); |
| 82 | if (rc < 0) |
| 83 | errx(1, "processing failed: %s", strerror(-rc)); |
| 84 | |
| 85 | cc -= 12; /* ignore RTP header */ |
| 86 | if (write(1, buf + 12, cc) != cc) |
| 87 | err(1, "write"); |
| 88 | } |
| 89 | return 0; |
| 90 | } |
| 91 | |