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/* EFR (GSM 06.60) codec */
/*
* This file is part of gapk (GSM Audio Pocket Knife).
*
* 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 <osmocom/gapk/codecs.h>
#include <osmocom/gapk/benchmark.h>
#include <osmocom/gapk/bench.h>
#include "config.h"
#ifdef HAVE_OPENCORE_AMRNB
#include <talloc.h>
#include <assert.h>
#include <opencore-amrnb/interf_dec.h>
#include <opencore-amrnb/interf_enc.h>
/* Internal root talloc context */
extern TALLOC_CTX *gapk_root_ctx;
struct codec_efr_state {
void *encoder;
void *decoder;
};
static void *
codec_efr_init(void)
{
struct codec_efr_state *st;
st = talloc_zero(gapk_root_ctx, struct codec_efr_state);
if (!st)
return NULL;
st->encoder = Encoder_Interface_init(0);
st->decoder = Decoder_Interface_init();
return (void *)st;
}
static void
codec_efr_exit(void *state)
{
struct codec_efr_state *st = state;
Decoder_Interface_exit(st->decoder);
Encoder_Interface_exit(st->encoder);
talloc_free(st);
return;
}
static int
codec_efr_encode(void *state, uint8_t *cod, const uint8_t *pcm, unsigned int pcm_len)
{
struct codec_efr_state *st = state;
int rv;
assert(pcm_len == PCM_CANON_LEN);
BENCHMARK_START;
rv = Encoder_Interface_Encode(
st->encoder,
MR122,
(const short*) pcm,
(unsigned char*) cod,
1
);
BENCHMARK_STOP(CODEC_EFR, 1);
if (rv != 32)
return -1;
return 32;
}
static int
codec_efr_decode(void *state, uint8_t *pcm, const uint8_t *cod, unsigned int cod_len)
{
struct codec_efr_state *st = state;
assert(cod_len == 32);
BENCHMARK_START;
Decoder_Interface_Decode(
st->decoder,
(const unsigned char*) cod,
(short *) pcm,
0
);
BENCHMARK_STOP(CODEC_EFR, 0);
return PCM_CANON_LEN;
}
#endif /* HAVE_OPENCORE_AMRNB */
const struct osmo_gapk_codec_desc codec_efr_desc = {
.type = CODEC_EFR,
.name = "efr",
.description = "GSM 06.60 Enhanced Full Rate codec",
.canon_frame_len = EFR_CANON_LEN,
#ifdef HAVE_OPENCORE_AMRNB
.codec_enc_format_type = FMT_AMR_EFR,
.codec_dec_format_type = FMT_AMR_EFR,
.codec_init = codec_efr_init,
.codec_exit = codec_efr_exit,
.codec_encode = codec_efr_encode,
.codec_decode = codec_efr_decode,
#endif
};
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