From 4b2fc9d3e738dbb2e7dd297de2f35e571e350691 Mon Sep 17 00:00:00 2001
From: tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b>
Date: Tue, 6 Nov 2007 22:51:48 +0000
Subject: Commit some cleanups to the format type code.  - Remove the
 AST_FORMAT_MAX_* types, as these are consuming 3 out of our available 32
 bits.  - Add a native slin16 type, so that 16kHz codecs can translate without
 losing resolution.    (This doesn't affect anything immediately, until
 another codec has wb support.)

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@89071 f38db490-d61c-443f-a65b-d21fe96a405b
---
 codecs/codec_g722.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 75 insertions(+), 1 deletion(-)

(limited to 'codecs')

diff --git a/codecs/codec_g722.c b/codecs/codec_g722.c
index 00e36fb33..54802dc8b 100644
--- a/codecs/codec_g722.c
+++ b/codecs/codec_g722.c
@@ -74,6 +74,15 @@ static int lintog722_new(struct ast_trans_pvt *pvt)
 	return 0;
 }
 
+static int lin16tog722_new(struct ast_trans_pvt *pvt)
+{
+	struct g722_encoder_pvt *tmp = pvt->pvt;
+
+	g722_encode_init(&tmp->g722, 64000, 0);
+
+	return 0;
+}
+
 /*! \brief init a new instance of g722_encoder_pvt. */
 static int g722tolin_new(struct ast_trans_pvt *pvt)
 {
@@ -84,6 +93,15 @@ static int g722tolin_new(struct ast_trans_pvt *pvt)
 	return 0;
 }
 
+static int g722tolin16_new(struct ast_trans_pvt *pvt)
+{
+	struct g722_decoder_pvt *tmp = pvt->pvt;
+
+	g722_decode_init(&tmp->g722, 64000, 0);
+
+	return 0;
+}
+
 static int g722tolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
 {
 	struct g722_decoder_pvt *tmp = pvt->pvt;
@@ -125,6 +143,20 @@ static struct ast_frame *g722tolin_sample(void)
 	return &f;
 }
 
+static struct ast_frame *g722tolin16_sample(void)
+{
+	static struct ast_frame f = {
+		.frametype = AST_FRAME_VOICE,
+		.subclass = AST_FORMAT_G722,
+		.datalen = sizeof(slin_g722_ex),
+		.samples = sizeof(slin_g722_ex) / sizeof(slin_g722_ex[0]),
+		.src = __PRETTY_FUNCTION__,
+		.data = slin_g722_ex,
+	};
+
+	return &f;
+}
+
 static struct ast_frame *lintog722_sample (void)
 {
 	static struct ast_frame f = {
@@ -139,6 +171,20 @@ static struct ast_frame *lintog722_sample (void)
 	return &f;
 }
 
+static struct ast_frame *lin16tog722_sample (void)
+{
+	static struct ast_frame f = {
+		.frametype = AST_FRAME_VOICE,
+		.subclass = AST_FORMAT_SLINEAR16,
+		.datalen = sizeof(slin_g722_ex),
+		.samples = sizeof(slin_g722_ex) / sizeof(slin_g722_ex[0]),
+		.src = __PRETTY_FUNCTION__,
+		.data = slin_g722_ex,
+	};
+
+	return &f;
+}
+
 static struct ast_translator g722tolin = {
 	.name = "g722tolin",
 	.srcfmt = AST_FORMAT_G722,
@@ -164,6 +210,31 @@ static struct ast_translator lintog722 = {
 	.buf_size = BUFFER_SAMPLES,
 };
 
+static struct ast_translator g722tolin16 = {
+	.name = "g722tolin16",
+	.srcfmt = AST_FORMAT_G722,
+	.dstfmt = AST_FORMAT_SLINEAR16,
+	.newpvt = g722tolin16_new,	/* same for both directions */
+	.framein = g722tolin_framein,
+	.sample = g722tolin16_sample,
+	.desc_size = sizeof(struct g722_decoder_pvt),
+	.buffer_samples = BUFFER_SAMPLES,
+	.buf_size = BUFFER_SAMPLES,
+	.plc_samples = 160,
+};
+
+static struct ast_translator lin16tog722 = {
+	.name = "lin16tog722",
+	.srcfmt = AST_FORMAT_SLINEAR16,
+	.dstfmt = AST_FORMAT_G722,
+	.newpvt = lin16tog722_new,	/* same for both directions */
+	.framein = lintog722_framein,
+	.sample = lin16tog722_sample,
+	.desc_size = sizeof(struct g722_encoder_pvt),
+	.buffer_samples = BUFFER_SAMPLES,
+	.buf_size = BUFFER_SAMPLES,
+};
+
 static int parse_config(int reload)
 {
 	struct ast_variable *var;
@@ -198,6 +269,8 @@ static int unload_module(void)
 
 	res |= ast_unregister_translator(&g722tolin);
 	res |= ast_unregister_translator(&lintog722);
+	res |= ast_unregister_translator(&g722tolin16);
+	res |= ast_unregister_translator(&lin16tog722);
 
 	return res;
 }
@@ -206,12 +279,13 @@ static int load_module(void)
 {
 	int res = 0;
 
-
 	if (parse_config(0))
 		return AST_MODULE_LOAD_DECLINE;
 
 	res |= ast_register_translator(&g722tolin);
 	res |= ast_register_translator(&lintog722);
+	res |= ast_register_translator(&g722tolin16);
+	res |= ast_register_translator(&lin16tog722);
 
 	if (res) {
 		unload_module();
-- 
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