1 files changed, 121 insertions, 0 deletions
diff --git a/src/codec_amr.c b/src/codec_amr.c
new file mode 100644
index 0000000..9922ece
--- /dev/null
+++ b/src/codec_amr.c
@@ -0,0 +1,121 @@
+/* AMR (GSM 06.90) codec */
+/* (C) 2017 Harald Welte <laforge@gnumonks.org> */
+
+/*
+ * 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 <gapk/codecs.h>
+#include <gapk/benchmark.h>
+
+#include "config.h"
+
+
+#ifdef HAVE_OPENCORE_AMRNB
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <opencore-amrnb/interf_dec.h>
+#include <opencore-amrnb/interf_enc.h>
+
+struct codec_amr_state {
+	void *encoder;
+	void *decoder;
+};
+
+
+static void *
+codec_amr_init(void)
+{
+	struct codec_amr_state *st;
+
+	st = calloc(1, sizeof(*st));
+	if (!st)
+		return NULL;
+
+	st->encoder = Encoder_Interface_init(0);
+	st->decoder = Decoder_Interface_init();
+
+	return (void *)st;
+}
+
+static void
+codec_amr_exit(void *state)
+{
+	struct codec_amr_state *st = state;
+
+	Decoder_Interface_exit(st->decoder);
+	Encoder_Interface_exit(st->encoder);
+
+	return;
+}
+
+static int
+codec_amr_encode(void *state, uint8_t *cod, const uint8_t *pcm, unsigned int pcm_len)
+{
+	struct codec_amr_state *st = state;
+	int rv;
+
+	BENCHMARK_START;
+	rv = Encoder_Interface_Encode(
+		st->encoder,
+		MR122,
+		(const short*) pcm,
+		(unsigned char*) cod,
+		1
+	);
+	BENCHMARK_STOP(CODEC_EFR, 1);
+
+	return rv;
+}
+
+static int
+codec_amr_decode(void *state, uint8_t *pcm, const uint8_t *cod, unsigned int cod_len)
+{
+	struct codec_amr_state *st = state;
+
+	printf("%s(): %u bytes in\n", __func__, cod_len);
+
+	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 codec_desc codec_amr_desc = {
+	.type = CODEC_AMR,
+	.name = "amr",
+	.description = "GSM 26.071 Adaptive Multi Rate codec",
+	.canon_frame_len = 0,
+#ifdef HAVE_OPENCORE_AMRNB
+	.codec_enc_format_type = FMT_AMR_OPENCORE,
+	.codec_dec_format_type = FMT_AMR_OPENCORE,
+	.codec_init = codec_amr_init,
+	.codec_exit = codec_amr_exit,
+	.codec_encode = codec_amr_encode,
+	.codec_decode = codec_amr_decode,
+#endif
+};