mirror of https://gerrit.osmocom.org/gapk
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/* HR (GSM 06.20) codec */
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/*
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* This file is part of gapk (GSM Audio Pocket Knife).
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*
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* gapk is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gapk is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gapk. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <osmocom/gapk/codecs.h>
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#include <osmocom/gapk/benchmark.h>
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#include <osmocom/gapk/bench.h>
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#include "config.h"
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#ifdef HAVE_LIBGSMHR
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#include <gsmhr/gsmhr.h>
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static void *
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codec_hr_init(void)
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{
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return (void *)gsmhr_init();
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}
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static void
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codec_hr_exit(void *_state)
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{
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struct gsmhr *state = _state;
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gsmhr_exit(state);
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}
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static int
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codec_hr_encode(void *_state, uint8_t *cod, const uint8_t *pcm, unsigned int pcm_len)
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{
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struct gsmhr *state = _state;
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int rc;
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assert(pcm_len == PCM_CANON_LEN);
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BENCHMARK_START;
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rc = gsmhr_encode(state, (int16_t *)cod, (const int16_t *)pcm);
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BENCHMARK_STOP(CODEC_HR, 1);
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if (rc < 0)
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return rc;
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return HR_REF_ENC_LEN;
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}
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static int
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codec_hr_decode(void *_state, uint8_t *pcm, const uint8_t *cod, unsigned int cod_len)
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{
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struct gsmhr *state = _state;
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int rc;
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assert(cod_len == HR_REF_DEC_LEN);
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BENCHMARK_START;
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rc = gsmhr_decode(state, (int16_t *)pcm, (const int16_t *)cod);
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BENCHMARK_STOP(CODEC_HR, 0);
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if (rc < 0)
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return rc;
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return PCM_CANON_LEN;
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}
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#endif /* HAVE_LIBGSMHR */
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const struct osmo_gapk_codec_desc codec_hr_desc = {
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.type = CODEC_HR,
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.name = "hr",
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.description = "GSM 06.20 Half Rate codec",
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.canon_frame_len = HR_CANON_LEN,
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#ifdef HAVE_LIBGSMHR
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.codec_enc_format_type = FMT_HR_REF_ENC,
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.codec_dec_format_type = FMT_HR_REF_DEC,
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.codec_init = codec_hr_init,
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.codec_exit = codec_hr_exit,
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.codec_encode = codec_hr_encode,
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.codec_decode = codec_hr_decode,
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#endif
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};
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