baresip 0.4.10

1 files changed, 96 insertions, 0 deletions

diff --git a/modules/l16/l16.c b/modules/l16/l16.c
new file mode 100644
index 0000000..c506f4b
--- /dev/null
+++ b/modules/l16/l16.c
@@ -0,0 +1,96 @@
+/**
+ * @file l16.c  16-bit linear codec
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+#include <re.h>
+#include <baresip.h>
+
+
+enum {NR_CODECS = 8};
+
+
+static int encode(struct auenc_state *st, uint8_t *buf, size_t *len,
+		  const int16_t *sampv, size_t sampc)
+{
+	int16_t *p = (void *)buf;
+	(void)st;
+
+	if (!buf || !len || !sampv)
+		return EINVAL;
+
+	if (*len < sampc*2)
+		return ENOMEM;
+
+	*len = sampc*2;
+
+	while (sampc--)
+		*p++ = htons(*sampv++);
+
+	return 0;
+}
+
+
+static int decode(struct audec_state *st, int16_t *sampv, size_t *sampc,
+		  const uint8_t *buf, size_t len)
+{
+	int16_t *p = (void *)buf;
+	(void)st;
+
+	if (!buf || !len || !sampv)
+		return EINVAL;
+
+	if (*sampc < len/2)
+		return ENOMEM;
+
+	*sampc = len/2;
+
+	len /= 2;
+	while (len--)
+		*sampv++ = ntohs(*p++);
+
+	return 0;
+}
+
+
+/* See RFC 3551 */
+static struct aucodec l16v[NR_CODECS] = {
+	{LE_INIT, "10", "L16", 44100, 2, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT,    0, "L16", 32000, 2, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT,    0, "L16", 16000, 2, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT,    0, "L16",  8000, 2, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT, "11", "L16", 44100, 1, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT,    0, "L16", 32000, 1, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT,    0, "L16", 16000, 1, 0, 0, encode, 0, decode, 0, 0, 0},
+	{LE_INIT,    0, "L16",  8000, 1, 0, 0, encode, 0, decode, 0, 0, 0},
+};
+
+
+static int module_init(void)
+{
+	size_t i;
+
+	for (i=0; i<NR_CODECS; i++)
+		aucodec_register(&l16v[i]);
+
+	return 0;
+}
+
+
+static int module_close(void)
+{
+	size_t i;
+
+	for (i=0; i<NR_CODECS; i++)
+		aucodec_unregister(&l16v[i]);
+
+	return 0;
+}
+
+
+EXPORT_SYM const struct mod_export DECL_EXPORTS(l16) = {
+	"l16",
+	"codec",
+	module_init,
+	module_close
+};