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/*
* This file is part of GAPK (GSM Audio Pocket Knife).
*
* (C) 2018 by Vadim Yanitskiy <axilirator@gmail.com>
*
* GAPK is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GAPK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GAPK. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <talloc.h>
#include <string.h>
#include <assert.h>
#include <osmocom/core/utils.h>
#include <osmocom/codec/codec.h>
#include <osmocom/gapk/procqueue.h>
#include <osmocom/gapk/codecs.h>
#include <osmocom/gapk/common.h>
/* A good FR frame */
static const char *sample_frame_hex = \
"d9ec9be212901f802335598c501f805bad3d4ba01f809b69df5a501f809cd1b4da";
static void talloc_ctx_walk_cb(const void *chunk, int depth,
int max_depth, int is_ref, void *data)
{
const char *chunk_name = talloc_get_name(chunk);
int spaces_cnt;
/* Hierarchical spacing */
for (spaces_cnt = 0; spaces_cnt < depth; spaces_cnt++)
printf(" ");
/* Chunk info */
printf("chunk %s: depth=%d\n", chunk_name, depth);
}
void pq_execute(struct osmo_gapk_pq *pq, uint8_t *frame, size_t len)
{
struct osmo_gapk_pq_item *pq_item;
unsigned int len_prev = len;
uint8_t *buf_prev = frame;
int rv;
/* Iterate over all items in the chain */
llist_for_each_entry(pq_item, &pq->items, list) {
printf("Block '%s/%s/%s' in (len=%d): %s\n", pq->name,
pq_item->cat_name, pq_item->sub_name, len_prev,
osmo_hexdump(buf_prev, len_prev));
/* Call item's processing handler */
rv = pq_item->proc(pq_item->state, pq_item->buf, buf_prev, len_prev);
assert(rv > 0);
printf("Block '%s/%s/%s' out (len=%d): %s\n", pq->name,
pq_item->cat_name, pq_item->sub_name, rv,
osmo_hexdump(pq_item->buf, rv));
buf_prev = pq_item->buf;
len_prev = rv;
}
}
void test_fr_concealment(struct osmo_gapk_pq *pq)
{
uint8_t fb[GSM_FR_BYTES];
int i;
/* Init frame buffer with BFI */
memset(fb, 0x00, sizeof(fb));
fb[0] = 0xd0;
/* Process a BFI frame */
printf("[i] Process a BFI frame: %s\n", osmo_hexdump(fb, sizeof(fb)));
pq_execute(pq, fb, sizeof(fb));
printf("\n");
/* Parse frame from string to hex */
osmo_hexparse(sample_frame_hex, fb, GSM_FR_BYTES);
/* Process a good frame (reset ECU) */
printf("[i] Process a good frame: %s\n", osmo_hexdump(fb, sizeof(fb)));
pq_execute(pq, fb, sizeof(fb));
printf("\n");
/* Now pretend that we do not receive any good frames anymore */
memset(fb, 0x00, sizeof(fb));
fb[0] = 0xd0;
printf("[i] Pretend that we do not receive any good frames anymore\n");
for (i = 0; i < 20; i++)
pq_execute(pq, fb, sizeof(fb));
printf("\n");
}
int main(int argc, char **argv)
{
const struct osmo_gapk_codec_desc *codec;
struct osmo_gapk_pq *pq;
int rc;
/* Enable tracking the use of NULL memory contexts */
talloc_enable_null_tracking();
/* Allocate a single processing chain */
pq = osmo_gapk_pq_create("pq_ecu_test");
assert(pq != NULL);
/* Obtain FR codec description */
codec = osmo_gapk_codec_get_from_type(CODEC_FR);
assert(codec->ecu_proc);
/* Put a FR ECU */
rc = osmo_gapk_pq_queue_ecu(pq, codec);
assert(rc == 0);
/* Put a FR decoder */
rc = osmo_gapk_pq_queue_codec(pq, codec, 0);
assert(rc == 0);
/* Prepare the chain */
rc = osmo_gapk_pq_prepare(pq);
assert(rc == 0);
test_fr_concealment(pq);
/* Release memory */
osmo_gapk_pq_destroy(pq);
/* Make sure we have no memleaks */
talloc_report_depth_cb(NULL, 0, 10, &talloc_ctx_walk_cb, NULL);
return 0;
}
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