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#include <osmocom/core/utils.h>
#include <osmocom/gsm/i460_mux.h>
static void bits_cb(struct osmo_i460_subchan *schan, void *user_data,
const ubit_t *bits, unsigned int num_bits)
{
char *str = user_data;
printf("demux_bits_cb '%s': %s\n", str, osmo_ubit_dump(bits, num_bits));
}
const struct osmo_i460_schan_desc scd64 = {
.rate = OSMO_I460_RATE_64k,
.bit_offset = 0,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "64k",
},
};
const struct osmo_i460_schan_desc scd32_0 = {
.rate = OSMO_I460_RATE_32k,
.bit_offset = 0,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "32k_0",
},
};
const struct osmo_i460_schan_desc scd32_4 = {
.rate = OSMO_I460_RATE_32k,
.bit_offset = 4,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "32k_4",
},
};
const struct osmo_i460_schan_desc scd16_0 = {
.rate = OSMO_I460_RATE_16k,
.bit_offset = 0,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "16k_0",
},
};
const struct osmo_i460_schan_desc scd16_2 = {
.rate = OSMO_I460_RATE_16k,
.bit_offset = 2,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "16k_2",
},
};
const struct osmo_i460_schan_desc scd16_4 = {
.rate = OSMO_I460_RATE_16k,
.bit_offset = 4,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "16k_4",
},
};
const struct osmo_i460_schan_desc scd16_6 = {
.rate = OSMO_I460_RATE_16k,
.bit_offset = 6,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "16k_6",
},
};
const struct osmo_i460_schan_desc scd8_0 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 0,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_0",
},
};
const struct osmo_i460_schan_desc scd8_1 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 1,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_1",
},
};
const struct osmo_i460_schan_desc scd8_2 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 2,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_2",
},
};
const struct osmo_i460_schan_desc scd8_3 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 3,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_3",
},
};
const struct osmo_i460_schan_desc scd8_4 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 4,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_4",
},
};
const struct osmo_i460_schan_desc scd8_5 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 5,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_5",
},
};
const struct osmo_i460_schan_desc scd8_6 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 6,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_6",
},
};
const struct osmo_i460_schan_desc scd8_7 = {
.rate = OSMO_I460_RATE_8k,
.bit_offset = 7,
.demux = {
.num_bits = 40,
.out_cb_bits = bits_cb,
.out_cb_bytes = NULL,
.user_data = "8k_7",
},
};
static void test_no_subchan(void)
{
struct osmo_i460_timeslot _ts, *ts = &_ts;
/* Initialization */
printf("\n==> %s\n", __func__);
osmo_i460_ts_init(ts);
/* feed in some data; expect nothing to happen */
const uint8_t nothing[128] = { 0, };
osmo_i460_demux_in(ts, nothing, sizeof(nothing));
/* pull bytes out of mux (should be all 0xff) */
uint8_t buf[128];
osmo_i460_mux_out(ts, buf, sizeof(buf));
printf("out: %s\n", osmo_hexdump(buf, sizeof(buf)));
}
static struct msgb *gen_alternating_bitmsg(unsigned int num_bits)
{
struct msgb *msg = msgb_alloc(num_bits, "mux-in");
int i;
for (i = 0; i < num_bits; i++)
msgb_put_u8(msg, i & 1);
return msg;
}
static void test_64k_subchan(void)
{
struct osmo_i460_timeslot _ts, *ts = &_ts;
/* Initialization */
printf("\n==> %s\n", __func__);
osmo_i460_ts_init(ts);
osmo_i460_subchan_add(NULL, ts, &scd64);
/* demux */
uint8_t sequence[128];
int i;
for (i = 0; i < sizeof(sequence); i++)
sequence[i] = i;
osmo_i460_demux_in(ts, sequence, sizeof(sequence));
/* mux */
struct msgb *msg = gen_alternating_bitmsg(128);
osmo_i460_mux_enqueue(&ts->schan[0], msg);
uint8_t buf[16];
osmo_i460_mux_out(ts, buf, sizeof(buf));
printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
osmo_i460_subchan_del(&ts->schan[0]);
}
static void test_32k_subchan(void)
{
struct osmo_i460_timeslot _ts, *ts = &_ts;
/* Initialization */
printf("\n==> %s\n", __func__);
osmo_i460_ts_init(ts);
osmo_i460_subchan_add(NULL, ts, &scd32_0);
osmo_i460_subchan_add(NULL, ts, &scd32_4);
/* demux */
uint8_t sequence[10];
int i;
for (i = 0; i < sizeof(sequence); i++)
sequence[i] = 0;
sequence[1] = 0xf0;
sequence[0] = 0x0f;
sequence[2] = 0xff;
osmo_i460_demux_in(ts, sequence, sizeof(sequence));
/* mux */
/* test with only a single channel active */
for (i = 0; i < 2; i++) {
struct msgb *msg = gen_alternating_bitmsg(128);
osmo_i460_mux_enqueue(&ts->schan[i], msg);
printf("%s-single-%u\n", __func__, i);
uint8_t buf[16];
int j;
for (j = 0; j < 3; j++) {
osmo_i460_mux_out(ts, buf, sizeof(buf));
printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
}
}
for (i = 0; i < 4; i++)
osmo_i460_subchan_del(&ts->schan[i]);
}
static void test_16k_subchan(void)
{
struct osmo_i460_timeslot _ts, *ts = &_ts;
/* Initialization */
printf("\n==> %s\n", __func__);
osmo_i460_ts_init(ts);
osmo_i460_subchan_add(NULL, ts, &scd16_0);
osmo_i460_subchan_add(NULL, ts, &scd16_2);
osmo_i460_subchan_add(NULL, ts, &scd16_4);
osmo_i460_subchan_add(NULL, ts, &scd16_6);
/* demux */
uint8_t sequence[20];
int i;
for (i = 0; i < sizeof(sequence); i++)
sequence[i] = 0;
sequence[0] = 0xC0;
sequence[1] = 0x30;
sequence[2] = 0x0c;
sequence[3] = 0x03;
sequence[4] = 0xff;
osmo_i460_demux_in(ts, sequence, sizeof(sequence));
/* mux */
/* test with only a single channel active */
for (i = 0; i < 4; i++) {
struct msgb *msg = gen_alternating_bitmsg(128);
osmo_i460_mux_enqueue(&ts->schan[i], msg);
printf("%s-single-%u\n", __func__, i);
uint8_t buf[16];
int j;
for (j = 0; j < 5; j++) {
osmo_i460_mux_out(ts, buf, sizeof(buf));
printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
}
}
for (i = 0; i < 4; i++)
osmo_i460_subchan_del(&ts->schan[i]);
}
static void test_8k_subchan(void)
{
struct osmo_i460_timeslot _ts, *ts = &_ts;
/* Initialization */
printf("\n==> %s\n", __func__);
osmo_i460_ts_init(ts);
osmo_i460_subchan_add(NULL, ts, &scd8_0);
osmo_i460_subchan_add(NULL, ts, &scd8_1);
osmo_i460_subchan_add(NULL, ts, &scd8_2);
osmo_i460_subchan_add(NULL, ts, &scd8_3);
osmo_i460_subchan_add(NULL, ts, &scd8_4);
osmo_i460_subchan_add(NULL, ts, &scd8_5);
osmo_i460_subchan_add(NULL, ts, &scd8_6);
osmo_i460_subchan_add(NULL, ts, &scd8_7);
/* demux */
uint8_t sequence[40];
int i;
for (i = 0; i < sizeof(sequence); i++)
sequence[i] = 0;
i = 0;
sequence[i++] = 0x80;
sequence[i++] = 0x40;
sequence[i++] = 0x20;
sequence[i++] = 0x10;
sequence[i++] = 0xf0;
sequence[i++] = 0x08;
sequence[i++] = 0x04;
sequence[i++] = 0x02;
sequence[i++] = 0x01;
sequence[i++] = 0x0f;
sequence[i++] = 0xff;
osmo_i460_demux_in(ts, sequence, sizeof(sequence));
/* mux */
/* test with only a single channel active */
for (i = 0; i < 8; i++) {
struct msgb *msg = gen_alternating_bitmsg(64);
osmo_i460_mux_enqueue(&ts->schan[i], msg);
printf("%s-single-%u\n", __func__, i);
uint8_t buf[16];
int j;
for (j = 0; j < 5; j++) {
osmo_i460_mux_out(ts, buf, sizeof(buf));
printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
}
}
for (i = 0; i < 8; i++)
osmo_i460_subchan_del(&ts->schan[i]);
}
/* activate only one sub-channel; expect unused bits to be '1' */
static void test_unused_subchan(void)
{
struct osmo_i460_timeslot _ts, *ts = &_ts;
/* Initialization */
printf("\n==> %s\n", __func__);
osmo_i460_ts_init(ts);
osmo_i460_subchan_add(NULL, ts, &scd16_0);
/* mux */
struct msgb *msg = gen_alternating_bitmsg(128);
memset(msgb_data(msg), 0, msgb_length(msg));
osmo_i460_mux_enqueue(&ts->schan[0], msg);
printf("%s-single\n", __func__);
uint8_t buf[16];
int j;
for (j = 0; j < 5; j++) {
osmo_i460_mux_out(ts, buf, sizeof(buf));
printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
}
osmo_i460_subchan_del(&ts->schan[0]);
}
int main(int argc, char **argv)
{
test_no_subchan();
test_64k_subchan();
test_32k_subchan();
test_16k_subchan();
test_8k_subchan();
test_unused_subchan();
return 0;
}
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