move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7

2 files changed, 149 insertions, 0 deletions

diff --git a/contrib/testconv/Makefile b/contrib/testconv/Makefile
new file mode 100644
index 000000000..bb856f750
--- /dev/null
+++ b/contrib/testconv/Makefile
@@ -0,0 +1,16 @@
+
+OBJS = testconv_main.o
+
+CC = gcc
+CFLAGS = -O0 -ggdb -Wall
+LDFLAGS =
+CPPFLAGS = -I../.. -I../../include $(shell pkg-config --cflags libosmocore) $(shell pkg-config --cflags libbcg729)
+LIBS =  ../../src/libmgcp/libmgcp.a ../../src/libcommon/libcommon.a $(shell pkg-config --libs libosmocore) $(shell pkg-config --libs libbcg729) -lgsm -lrt
+
+testconv: $(OBJS)
+	$(CC)  -o $@ $^ $(LDFLAGS) $(LIBS)
+
+testconv_main.o: testconv_main.c
+
+$(OBJS):
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<
diff --git a/contrib/testconv/testconv_main.c b/contrib/testconv/testconv_main.c
new file mode 100644
index 000000000..6c95c5542
--- /dev/null
+++ b/contrib/testconv/testconv_main.c
@@ -0,0 +1,133 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/application.h>
+
+#include <openbsc/debug.h>
+#include <openbsc/gsm_data.h>
+#include <openbsc/mgcp.h>
+#include <openbsc/mgcp_internal.h>
+
+#include "bscconfig.h"
+#ifndef BUILD_MGCP_TRANSCODING
+#error "Requires MGCP transcoding enabled (see --enable-mgcp-transcoding)"
+#endif
+
+#include "openbsc/mgcp_transcode.h"
+
+static int audio_name_to_type(const char *name)
+{
+	if (!strcasecmp(name, "gsm"))
+		return 3;
+#ifdef HAVE_BCG729
+	else if (!strcasecmp(name, "g729"))
+		return 18;
+#endif
+	else if (!strcasecmp(name, "pcma"))
+		return 8;
+	else if (!strcasecmp(name, "l16"))
+		return 11;
+	return -1;
+}
+
+int mgcp_get_trans_frame_size(void *state_, int nsamples, int dst);
+
+int main(int argc, char **argv)
+{
+	char buf[4096] = {0x80, 0};
+	int cc, rc;
+	struct mgcp_rtp_end *dst_end;
+	struct mgcp_rtp_end *src_end;
+	struct mgcp_trunk_config tcfg = {{0}};
+	struct mgcp_endpoint endp = {0};
+	struct mgcp_process_rtp_state *state;
+	int in_size;
+	int in_samples = 160;
+	int out_samples = 0;
+	uint32_t ts = 0;
+	uint16_t seq = 0;
+
+	osmo_init_logging(&log_info);
+
+	tcfg.endpoints = &endp;
+	tcfg.number_endpoints = 1;
+	endp.tcfg = &tcfg;
+	mgcp_initialize_endp(&endp);
+
+	dst_end = &endp.bts_end;
+	src_end = &endp.net_end;
+
+	if (argc <= 2)
+		errx(1, "Usage: {gsm|g729|pcma|l16} {gsm|g729|pcma|l16} [SPP]");
+
+	if ((src_end->codec.payload_type = audio_name_to_type(argv[1])) == -1)
+		errx(1, "invalid input format '%s'", argv[1]);
+	if ((dst_end->codec.payload_type = audio_name_to_type(argv[2])) == -1)
+		errx(1, "invalid output format '%s'", argv[2]);
+	if (argc > 3)
+		out_samples = atoi(argv[3]);
+
+	if (out_samples) {
+		dst_end->codec.frame_duration_den = dst_end->codec.rate;
+		dst_end->codec.frame_duration_num = out_samples;
+		dst_end->frames_per_packet = 1;
+	}
+
+	rc = mgcp_transcoding_setup(&endp, dst_end, src_end);
+	if (rc < 0)
+		errx(1, "setup failed: %s", strerror(-rc));
+
+	state = dst_end->rtp_process_data;
+	OSMO_ASSERT(state != NULL);
+
+	in_size = mgcp_transcoding_get_frame_size(state, in_samples, 0);
+	OSMO_ASSERT(sizeof(buf) >= in_size + 12);
+
+	buf[1] = src_end->codec.payload_type;
+	*(uint16_t*)(buf+2) = htons(1);
+	*(uint32_t*)(buf+4) = htonl(0);
+	*(uint32_t*)(buf+8) = htonl(0xaabbccdd);
+
+	while ((cc = read(0, buf + 12, in_size))) {
+		int cont;
+		int len;
+
+		if (cc != in_size)
+			err(1, "read");
+
+		*(uint16_t*)(buf+2) = htonl(seq);
+		*(uint32_t*)(buf+4) = htonl(ts);
+
+		seq += 1;
+		ts += in_samples;
+
+		cc += 12; /* include RTP header */
+
+		len = cc;
+
+		do {
+			cont = mgcp_transcoding_process_rtp(&endp, dst_end,
+							    buf, &len, sizeof(buf));
+			if (cont == -EAGAIN) {
+				fprintf(stderr, "Got EAGAIN\n");
+				break;
+			}
+
+			if (cont < 0)
+				errx(1, "processing failed: %s", strerror(-cont));
+
+			len -= 12; /* ignore RTP header */
+
+			if (write(1, buf + 12, len) != len)
+				err(1, "write");
+
+			len = cont;
+		} while (len > 0);
+	}
+	return 0;
+}
+