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-rw-r--r--gst/law/Makefile.am12
-rw-r--r--gst/law/alaw-conversion.c195
-rw-r--r--gst/law/alaw-conversion.h12
-rw-r--r--gst/law/alaw-decode.c186
-rw-r--r--gst/law/alaw-decode.h69
-rw-r--r--gst/law/alaw-encode.c182
-rw-r--r--gst/law/alaw-encode.h69
-rw-r--r--gst/law/alaw.c95
-rw-r--r--gst/law/mulaw-conversion.c102
-rw-r--r--gst/law/mulaw-conversion.h10
-rw-r--r--gst/law/mulaw-decode.c181
-rw-r--r--gst/law/mulaw-decode.h69
-rw-r--r--gst/law/mulaw-encode.c181
-rw-r--r--gst/law/mulaw-encode.h69
-rw-r--r--gst/law/mulaw.c103
15 files changed, 1535 insertions, 0 deletions
diff --git a/gst/law/Makefile.am b/gst/law/Makefile.am
new file mode 100644
index 00000000..76a73f79
--- /dev/null
+++ b/gst/law/Makefile.am
@@ -0,0 +1,12 @@
+filterdir = $(libdir)/gst
+
+filter_LTLIBRARIES = libgstalaw.la libgstmulaw.la
+
+libgstalaw_la_SOURCES = alaw-encode.c mulaw-conversion.c alaw-conversion.c alaw-decode.c alaw.c
+libgstalaw_la_CFLAGS = $(GST_CFLAGS)
+
+libgstmulaw_la_SOURCES = mulaw-encode.c mulaw-conversion.c mulaw-decode.c mulaw.c
+libgstmulaw_la_CFLAGS = $(GST_CFLAGS)
+
+noinst_HEADERS = mulaw-conversion.h alaw-encode.h alaw-decode.h alaw-conversion.h mulaw-encode.h mulaw-decode.h
+filterdir = $(libdir)/gst
diff --git a/gst/law/alaw-conversion.c b/gst/law/alaw-conversion.c
new file mode 100644
index 00000000..cb3be3e9
--- /dev/null
+++ b/gst/law/alaw-conversion.c
@@ -0,0 +1,195 @@
+/* $Id$
+
+ * Linux ISDN subsystem, audio conversion and compression (linklevel).
+ *
+ * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
+ * DTMF code (c) 1996 by Christian Mock (cm@kukuruz.ping.at)
+ * Silence detection (c) 1998 by Armin Schindler (mac@gismo.telekom.de)
+ *
+ * This program 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 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <glib.h>
+/*
+ * Misc. lookup-tables.
+ */
+
+/* ulaw -> signed 16-bit */
+static gint16 isdn_audio_ulaw_to_s16[] =
+{
+ 0x8284, 0x8684, 0x8a84, 0x8e84, 0x9284, 0x9684, 0x9a84, 0x9e84,
+ 0xa284, 0xa684, 0xaa84, 0xae84, 0xb284, 0xb684, 0xba84, 0xbe84,
+ 0xc184, 0xc384, 0xc584, 0xc784, 0xc984, 0xcb84, 0xcd84, 0xcf84,
+ 0xd184, 0xd384, 0xd584, 0xd784, 0xd984, 0xdb84, 0xdd84, 0xdf84,
+ 0xe104, 0xe204, 0xe304, 0xe404, 0xe504, 0xe604, 0xe704, 0xe804,
+ 0xe904, 0xea04, 0xeb04, 0xec04, 0xed04, 0xee04, 0xef04, 0xf004,
+ 0xf0c4, 0xf144, 0xf1c4, 0xf244, 0xf2c4, 0xf344, 0xf3c4, 0xf444,
+ 0xf4c4, 0xf544, 0xf5c4, 0xf644, 0xf6c4, 0xf744, 0xf7c4, 0xf844,
+ 0xf8a4, 0xf8e4, 0xf924, 0xf964, 0xf9a4, 0xf9e4, 0xfa24, 0xfa64,
+ 0xfaa4, 0xfae4, 0xfb24, 0xfb64, 0xfba4, 0xfbe4, 0xfc24, 0xfc64,
+ 0xfc94, 0xfcb4, 0xfcd4, 0xfcf4, 0xfd14, 0xfd34, 0xfd54, 0xfd74,
+ 0xfd94, 0xfdb4, 0xfdd4, 0xfdf4, 0xfe14, 0xfe34, 0xfe54, 0xfe74,
+ 0xfe8c, 0xfe9c, 0xfeac, 0xfebc, 0xfecc, 0xfedc, 0xfeec, 0xfefc,
+ 0xff0c, 0xff1c, 0xff2c, 0xff3c, 0xff4c, 0xff5c, 0xff6c, 0xff7c,
+ 0xff88, 0xff90, 0xff98, 0xffa0, 0xffa8, 0xffb0, 0xffb8, 0xffc0,
+ 0xffc8, 0xffd0, 0xffd8, 0xffe0, 0xffe8, 0xfff0, 0xfff8, 0x0000,
+ 0x7d7c, 0x797c, 0x757c, 0x717c, 0x6d7c, 0x697c, 0x657c, 0x617c,
+ 0x5d7c, 0x597c, 0x557c, 0x517c, 0x4d7c, 0x497c, 0x457c, 0x417c,
+ 0x3e7c, 0x3c7c, 0x3a7c, 0x387c, 0x367c, 0x347c, 0x327c, 0x307c,
+ 0x2e7c, 0x2c7c, 0x2a7c, 0x287c, 0x267c, 0x247c, 0x227c, 0x207c,
+ 0x1efc, 0x1dfc, 0x1cfc, 0x1bfc, 0x1afc, 0x19fc, 0x18fc, 0x17fc,
+ 0x16fc, 0x15fc, 0x14fc, 0x13fc, 0x12fc, 0x11fc, 0x10fc, 0x0ffc,
+ 0x0f3c, 0x0ebc, 0x0e3c, 0x0dbc, 0x0d3c, 0x0cbc, 0x0c3c, 0x0bbc,
+ 0x0b3c, 0x0abc, 0x0a3c, 0x09bc, 0x093c, 0x08bc, 0x083c, 0x07bc,
+ 0x075c, 0x071c, 0x06dc, 0x069c, 0x065c, 0x061c, 0x05dc, 0x059c,
+ 0x055c, 0x051c, 0x04dc, 0x049c, 0x045c, 0x041c, 0x03dc, 0x039c,
+ 0x036c, 0x034c, 0x032c, 0x030c, 0x02ec, 0x02cc, 0x02ac, 0x028c,
+ 0x026c, 0x024c, 0x022c, 0x020c, 0x01ec, 0x01cc, 0x01ac, 0x018c,
+ 0x0174, 0x0164, 0x0154, 0x0144, 0x0134, 0x0124, 0x0114, 0x0104,
+ 0x00f4, 0x00e4, 0x00d4, 0x00c4, 0x00b4, 0x00a4, 0x0094, 0x0084,
+ 0x0078, 0x0070, 0x0068, 0x0060, 0x0058, 0x0050, 0x0048, 0x0040,
+ 0x0038, 0x0030, 0x0028, 0x0020, 0x0018, 0x0010, 0x0008, 0x0000
+};
+
+/* alaw -> signed 16-bit */
+static gint16 isdn_audio_alaw_to_s16[] =
+{
+ 0x13fc, 0xec04, 0x0144, 0xfebc, 0x517c, 0xae84, 0x051c, 0xfae4,
+ 0x0a3c, 0xf5c4, 0x0048, 0xffb8, 0x287c, 0xd784, 0x028c, 0xfd74,
+ 0x1bfc, 0xe404, 0x01cc, 0xfe34, 0x717c, 0x8e84, 0x071c, 0xf8e4,
+ 0x0e3c, 0xf1c4, 0x00c4, 0xff3c, 0x387c, 0xc784, 0x039c, 0xfc64,
+ 0x0ffc, 0xf004, 0x0104, 0xfefc, 0x417c, 0xbe84, 0x041c, 0xfbe4,
+ 0x083c, 0xf7c4, 0x0008, 0xfff8, 0x207c, 0xdf84, 0x020c, 0xfdf4,
+ 0x17fc, 0xe804, 0x018c, 0xfe74, 0x617c, 0x9e84, 0x061c, 0xf9e4,
+ 0x0c3c, 0xf3c4, 0x0084, 0xff7c, 0x307c, 0xcf84, 0x030c, 0xfcf4,
+ 0x15fc, 0xea04, 0x0164, 0xfe9c, 0x597c, 0xa684, 0x059c, 0xfa64,
+ 0x0b3c, 0xf4c4, 0x0068, 0xff98, 0x2c7c, 0xd384, 0x02cc, 0xfd34,
+ 0x1dfc, 0xe204, 0x01ec, 0xfe14, 0x797c, 0x8684, 0x07bc, 0xf844,
+ 0x0f3c, 0xf0c4, 0x00e4, 0xff1c, 0x3c7c, 0xc384, 0x03dc, 0xfc24,
+ 0x11fc, 0xee04, 0x0124, 0xfedc, 0x497c, 0xb684, 0x049c, 0xfb64,
+ 0x093c, 0xf6c4, 0x0028, 0xffd8, 0x247c, 0xdb84, 0x024c, 0xfdb4,
+ 0x19fc, 0xe604, 0x01ac, 0xfe54, 0x697c, 0x9684, 0x069c, 0xf964,
+ 0x0d3c, 0xf2c4, 0x00a4, 0xff5c, 0x347c, 0xcb84, 0x034c, 0xfcb4,
+ 0x12fc, 0xed04, 0x0134, 0xfecc, 0x4d7c, 0xb284, 0x04dc, 0xfb24,
+ 0x09bc, 0xf644, 0x0038, 0xffc8, 0x267c, 0xd984, 0x026c, 0xfd94,
+ 0x1afc, 0xe504, 0x01ac, 0xfe54, 0x6d7c, 0x9284, 0x06dc, 0xf924,
+ 0x0dbc, 0xf244, 0x00b4, 0xff4c, 0x367c, 0xc984, 0x036c, 0xfc94,
+ 0x0f3c, 0xf0c4, 0x00f4, 0xff0c, 0x3e7c, 0xc184, 0x03dc, 0xfc24,
+ 0x07bc, 0xf844, 0x0008, 0xfff8, 0x1efc, 0xe104, 0x01ec, 0xfe14,
+ 0x16fc, 0xe904, 0x0174, 0xfe8c, 0x5d7c, 0xa284, 0x05dc, 0xfa24,
+ 0x0bbc, 0xf444, 0x0078, 0xff88, 0x2e7c, 0xd184, 0x02ec, 0xfd14,
+ 0x14fc, 0xeb04, 0x0154, 0xfeac, 0x557c, 0xaa84, 0x055c, 0xfaa4,
+ 0x0abc, 0xf544, 0x0058, 0xffa8, 0x2a7c, 0xd584, 0x02ac, 0xfd54,
+ 0x1cfc, 0xe304, 0x01cc, 0xfe34, 0x757c, 0x8a84, 0x075c, 0xf8a4,
+ 0x0ebc, 0xf144, 0x00d4, 0xff2c, 0x3a7c, 0xc584, 0x039c, 0xfc64,
+ 0x10fc, 0xef04, 0x0114, 0xfeec, 0x457c, 0xba84, 0x045c, 0xfba4,
+ 0x08bc, 0xf744, 0x0018, 0xffe8, 0x227c, 0xdd84, 0x022c, 0xfdd4,
+ 0x18fc, 0xe704, 0x018c, 0xfe74, 0x657c, 0x9a84, 0x065c, 0xf9a4,
+ 0x0cbc, 0xf344, 0x0094, 0xff6c, 0x327c, 0xcd84, 0x032c, 0xfcd4
+};
+
+/* alaw -> ulaw */
+static guint8 isdn_audio_alaw_to_ulaw[] =
+{
+ 0xab, 0x2b, 0xe3, 0x63, 0x8b, 0x0b, 0xc9, 0x49,
+ 0xba, 0x3a, 0xf6, 0x76, 0x9b, 0x1b, 0xd7, 0x57,
+ 0xa3, 0x23, 0xdd, 0x5d, 0x83, 0x03, 0xc1, 0x41,
+ 0xb2, 0x32, 0xeb, 0x6b, 0x93, 0x13, 0xcf, 0x4f,
+ 0xaf, 0x2f, 0xe7, 0x67, 0x8f, 0x0f, 0xcd, 0x4d,
+ 0xbe, 0x3e, 0xfe, 0x7e, 0x9f, 0x1f, 0xdb, 0x5b,
+ 0xa7, 0x27, 0xdf, 0x5f, 0x87, 0x07, 0xc5, 0x45,
+ 0xb6, 0x36, 0xef, 0x6f, 0x97, 0x17, 0xd3, 0x53,
+ 0xa9, 0x29, 0xe1, 0x61, 0x89, 0x09, 0xc7, 0x47,
+ 0xb8, 0x38, 0xf2, 0x72, 0x99, 0x19, 0xd5, 0x55,
+ 0xa1, 0x21, 0xdc, 0x5c, 0x81, 0x01, 0xbf, 0x3f,
+ 0xb0, 0x30, 0xe9, 0x69, 0x91, 0x11, 0xce, 0x4e,
+ 0xad, 0x2d, 0xe5, 0x65, 0x8d, 0x0d, 0xcb, 0x4b,
+ 0xbc, 0x3c, 0xfa, 0x7a, 0x9d, 0x1d, 0xd9, 0x59,
+ 0xa5, 0x25, 0xde, 0x5e, 0x85, 0x05, 0xc3, 0x43,
+ 0xb4, 0x34, 0xed, 0x6d, 0x95, 0x15, 0xd1, 0x51,
+ 0xac, 0x2c, 0xe4, 0x64, 0x8c, 0x0c, 0xca, 0x4a,
+ 0xbb, 0x3b, 0xf8, 0x78, 0x9c, 0x1c, 0xd8, 0x58,
+ 0xa4, 0x24, 0xde, 0x5e, 0x84, 0x04, 0xc2, 0x42,
+ 0xb3, 0x33, 0xec, 0x6c, 0x94, 0x14, 0xd0, 0x50,
+ 0xb0, 0x30, 0xe8, 0x68, 0x90, 0x10, 0xce, 0x4e,
+ 0xbf, 0x3f, 0xfe, 0x7e, 0xa0, 0x20, 0xdc, 0x5c,
+ 0xa8, 0x28, 0xe0, 0x60, 0x88, 0x08, 0xc6, 0x46,
+ 0xb7, 0x37, 0xf0, 0x70, 0x98, 0x18, 0xd4, 0x54,
+ 0xaa, 0x2a, 0xe2, 0x62, 0x8a, 0x0a, 0xc8, 0x48,
+ 0xb9, 0x39, 0xf4, 0x74, 0x9a, 0x1a, 0xd6, 0x56,
+ 0xa2, 0x22, 0xdd, 0x5d, 0x82, 0x02, 0xc0, 0x40,
+ 0xb1, 0x31, 0xea, 0x6a, 0x92, 0x12, 0xcf, 0x4f,
+ 0xae, 0x2e, 0xe6, 0x66, 0x8e, 0x0e, 0xcc, 0x4c,
+ 0xbd, 0x3d, 0xfc, 0x7c, 0x9e, 0x1e, 0xda, 0x5a,
+ 0xa6, 0x26, 0xdf, 0x5f, 0x86, 0x06, 0xc4, 0x44,
+ 0xb5, 0x35, 0xee, 0x6e, 0x96, 0x16, 0xd2, 0x52
+};
+
+/* ulaw -> alaw */
+static guint8 isdn_audio_ulaw_to_alaw[] =
+{
+ 0xab, 0x55, 0xd5, 0x15, 0x95, 0x75, 0xf5, 0x35,
+ 0xb5, 0x45, 0xc5, 0x05, 0x85, 0x65, 0xe5, 0x25,
+ 0xa5, 0x5d, 0xdd, 0x1d, 0x9d, 0x7d, 0xfd, 0x3d,
+ 0xbd, 0x4d, 0xcd, 0x0d, 0x8d, 0x6d, 0xed, 0x2d,
+ 0xad, 0x51, 0xd1, 0x11, 0x91, 0x71, 0xf1, 0x31,
+ 0xb1, 0x41, 0xc1, 0x01, 0x81, 0x61, 0xe1, 0x21,
+ 0x59, 0xd9, 0x19, 0x99, 0x79, 0xf9, 0x39, 0xb9,
+ 0x49, 0xc9, 0x09, 0x89, 0x69, 0xe9, 0x29, 0xa9,
+ 0xd7, 0x17, 0x97, 0x77, 0xf7, 0x37, 0xb7, 0x47,
+ 0xc7, 0x07, 0x87, 0x67, 0xe7, 0x27, 0xa7, 0xdf,
+ 0x9f, 0x7f, 0xff, 0x3f, 0xbf, 0x4f, 0xcf, 0x0f,
+ 0x8f, 0x6f, 0xef, 0x2f, 0x53, 0x13, 0x73, 0x33,
+ 0xb3, 0x43, 0xc3, 0x03, 0x83, 0x63, 0xe3, 0x23,
+ 0xa3, 0x5b, 0xdb, 0x1b, 0x9b, 0x7b, 0xfb, 0x3b,
+ 0xbb, 0xbb, 0x4b, 0x4b, 0xcb, 0xcb, 0x0b, 0x0b,
+ 0x8b, 0x8b, 0x6b, 0x6b, 0xeb, 0xeb, 0x2b, 0x2b,
+ 0xab, 0x54, 0xd4, 0x14, 0x94, 0x74, 0xf4, 0x34,
+ 0xb4, 0x44, 0xc4, 0x04, 0x84, 0x64, 0xe4, 0x24,
+ 0xa4, 0x5c, 0xdc, 0x1c, 0x9c, 0x7c, 0xfc, 0x3c,
+ 0xbc, 0x4c, 0xcc, 0x0c, 0x8c, 0x6c, 0xec, 0x2c,
+ 0xac, 0x50, 0xd0, 0x10, 0x90, 0x70, 0xf0, 0x30,
+ 0xb0, 0x40, 0xc0, 0x00, 0x80, 0x60, 0xe0, 0x20,
+ 0x58, 0xd8, 0x18, 0x98, 0x78, 0xf8, 0x38, 0xb8,
+ 0x48, 0xc8, 0x08, 0x88, 0x68, 0xe8, 0x28, 0xa8,
+ 0xd6, 0x16, 0x96, 0x76, 0xf6, 0x36, 0xb6, 0x46,
+ 0xc6, 0x06, 0x86, 0x66, 0xe6, 0x26, 0xa6, 0xde,
+ 0x9e, 0x7e, 0xfe, 0x3e, 0xbe, 0x4e, 0xce, 0x0e,
+ 0x8e, 0x6e, 0xee, 0x2e, 0x52, 0x12, 0x72, 0x32,
+ 0xb2, 0x42, 0xc2, 0x02, 0x82, 0x62, 0xe2, 0x22,
+ 0xa2, 0x5a, 0xda, 0x1a, 0x9a, 0x7a, 0xfa, 0x3a,
+ 0xba, 0xba, 0x4a, 0x4a, 0xca, 0xca, 0x0a, 0x0a,
+ 0x8a, 0x8a, 0x6a, 0x6a, 0xea, 0xea, 0x2a, 0x2a
+};
+
+static inline void
+isdn_audio_tlookup(const guint8 *table, guint8 *buff, gulong n)
+{
+ while (n--)
+ *buff++ = table[*(unsigned char *)buff];
+}
+
+void
+isdn_audio_ulaw2alaw(guint8 *buff, gulong len)
+{
+ isdn_audio_tlookup(isdn_audio_ulaw_to_alaw, buff, len);
+}
+
+void
+isdn_audio_alaw2ulaw(guint8 *buff, gulong len)
+{
+ isdn_audio_tlookup(isdn_audio_alaw_to_ulaw, buff, len);
+}
diff --git a/gst/law/alaw-conversion.h b/gst/law/alaw-conversion.h
new file mode 100644
index 00000000..b7d1297b
--- /dev/null
+++ b/gst/law/alaw-conversion.h
@@ -0,0 +1,12 @@
+#ifndef _GST_ALAW_CONVERSION_H
+#define _GST_ALAW_CONVERSION_H
+
+#include <glib.h>
+
+void
+isdn_audio_ulaw2alaw(guint8 *buff, gulong len);
+
+void
+isdn_audio_alaw2ulaw(guint8 *buff, gulong len);
+
+#endif
diff --git a/gst/law/alaw-decode.c b/gst/law/alaw-decode.c
new file mode 100644
index 00000000..872d5335
--- /dev/null
+++ b/gst/law/alaw-decode.c
@@ -0,0 +1,186 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gst/gst.h>
+#include "alaw-decode.h"
+#include "mulaw-conversion.h"
+#include "alaw-conversion.h"
+
+extern GstPadTemplate *alawdec_src_template, *alawdec_sink_template;
+
+
+/* Stereo signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0
+};
+
+static void gst_alawdec_class_init (GstALawDecClass *klass);
+static void gst_alawdec_init (GstALawDec *alawdec);
+
+static void gst_alawdec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_alawdec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static void gst_alawdec_chain (GstPad *pad, GstBuffer *buf);
+
+
+static GstElementClass *parent_class = NULL;
+//static guint gst_stereo_signals[LAST_SIGNAL] = { 0 };
+
+static GstPadNegotiateReturn
+alawdec_negotiate_sink (GstPad *pad, GstCaps **caps, gint counter)
+{
+ GstCaps* tempcaps;
+
+ GstALawDec* alawdec=GST_ALAWDEC (GST_OBJECT_PARENT (pad));
+
+ if (*caps==NULL)
+ return GST_PAD_NEGOTIATE_FAIL;
+
+ tempcaps = gst_caps_copy(*caps);
+
+ gst_caps_set(tempcaps,"format",GST_PROPS_STRING("int"));
+ gst_caps_set(tempcaps,"law",GST_PROPS_INT(0));
+ gst_caps_set(tempcaps,"depth",GST_PROPS_INT(16));
+ gst_caps_set(tempcaps,"width",GST_PROPS_INT(16));
+ gst_caps_set(tempcaps,"signed",GST_PROPS_BOOLEAN(TRUE));
+
+ if (gst_pad_set_caps (alawdec->srcpad, tempcaps))
+ {
+ return GST_PAD_NEGOTIATE_AGREE;
+ }
+ else {
+ gst_caps_unref (tempcaps);
+ return GST_PAD_NEGOTIATE_FAIL;
+ }
+}
+
+GType
+gst_alawdec_get_type(void) {
+ static GType alawdec_type = 0;
+
+ if (!alawdec_type) {
+ static const GTypeInfo alawdec_info = {
+ sizeof(GstALawDecClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_alawdec_class_init,
+ NULL,
+ NULL,
+ sizeof(GstALawDec),
+ 0,
+ (GInstanceInitFunc)gst_alawdec_init,
+ };
+ alawdec_type = g_type_register_static(GST_TYPE_ELEMENT, "GstALawDec", &alawdec_info, 0);
+ }
+ return alawdec_type;
+}
+
+static void
+gst_alawdec_class_init (GstALawDecClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_alawdec_set_property;
+ gobject_class->get_property = gst_alawdec_get_property;
+}
+
+static void
+gst_alawdec_init (GstALawDec *alawdec)
+{
+ alawdec->sinkpad = gst_pad_new_from_template(alawdec_sink_template,"sink");
+ alawdec->srcpad = gst_pad_new_from_template(alawdec_src_template,"src");
+ gst_pad_set_negotiate_function(alawdec->sinkpad, alawdec_negotiate_sink);
+
+ gst_element_add_pad(GST_ELEMENT(alawdec),alawdec->sinkpad);
+ gst_pad_set_chain_function(alawdec->sinkpad,gst_alawdec_chain);
+ gst_element_add_pad(GST_ELEMENT(alawdec),alawdec->srcpad);
+}
+
+static void
+gst_alawdec_chain (GstPad *pad,GstBuffer *buf)
+{
+ GstALawDec *alawdec;
+ gint16 *linear_data;
+ guint8 *alaw_data;
+ GstBuffer* outbuf;
+
+ g_return_if_fail(pad != NULL);
+ g_return_if_fail(GST_IS_PAD(pad));
+ g_return_if_fail(buf != NULL);
+
+ alawdec = GST_ALAWDEC(GST_OBJECT_PARENT (pad));
+ g_return_if_fail(alawdec != NULL);
+ g_return_if_fail(GST_IS_ALAWDEC(alawdec));
+
+ alaw_data = (guint8 *)GST_BUFFER_DATA(buf);
+ outbuf=gst_buffer_new();
+ GST_BUFFER_DATA(outbuf) = (gchar*)g_new(gint16,GST_BUFFER_SIZE(buf));
+ GST_BUFFER_SIZE(outbuf) = GST_BUFFER_SIZE(buf)*2;
+
+ linear_data = (gint16*)GST_BUFFER_DATA(outbuf);
+
+ isdn_audio_alaw2ulaw(alaw_data,GST_BUFFER_SIZE(buf));
+ mulaw_decode(alaw_data,linear_data,GST_BUFFER_SIZE(buf));
+
+ gst_buffer_unref(buf);
+ gst_pad_push(alawdec->srcpad,outbuf);
+}
+
+static void
+gst_alawdec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstALawDec *alawdec;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_ALAWDEC(object));
+ alawdec = GST_ALAWDEC(object);
+
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_alawdec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstALawDec *alawdec;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_ALAWDEC(object));
+ alawdec = GST_ALAWDEC(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
diff --git a/gst/law/alaw-decode.h b/gst/law/alaw-decode.h
new file mode 100644
index 00000000..f487009f
--- /dev/null
+++ b/gst/law/alaw-decode.h
@@ -0,0 +1,69 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_ALAWDECODE_H__
+#define __GST_ALAWDECODE_H__
+
+
+#include <config.h>
+#include <gst/gst.h>
+// #include <gst/meta/audioraw.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_ALAWDEC \
+ (gst_alawdec_get_type())
+#define GST_ALAWDEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALAWDEC,GstALawDec))
+#define GST_ALAWDEC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALAWDEC,GstALawDec))
+#define GST_IS_ALAWDEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALAWDEC))
+#define GST_IS_ALAWDEC_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALAWDEC))
+
+typedef struct _GstALawDec GstALawDec;
+typedef struct _GstALawDecClass GstALawDecClass;
+
+struct _GstALawDec {
+ GstElement element;
+
+ GstPad *sinkpad,*srcpad;
+
+ //MetaAudioRaw meta;
+
+};
+
+struct _GstALawDecClass {
+ GstElementClass parent_class;
+};
+
+GType gst_alawdec_get_type(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_STEREO_H__ */
diff --git a/gst/law/alaw-encode.c b/gst/law/alaw-encode.c
new file mode 100644
index 00000000..ab54bd16
--- /dev/null
+++ b/gst/law/alaw-encode.c
@@ -0,0 +1,182 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gst/gst.h>
+#include "alaw-encode.h"
+#include "mulaw-conversion.h"
+#include "alaw-conversion.h"
+
+extern GstPadTemplate *alawenc_src_template, *alawenc_sink_template;
+
+
+/* Stereo signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0
+};
+
+static void gst_alawenc_class_init (GstALawEncClass *klass);
+static void gst_alawenc_init (GstALawEnc *alawenc);
+
+static void gst_alawenc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_alawenc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static void gst_alawenc_chain (GstPad *pad, GstBuffer *buf);
+
+
+static GstElementClass *parent_class = NULL;
+//static guint gst_stereo_signals[LAST_SIGNAL] = { 0 };
+
+static GstPadNegotiateReturn
+alawenc_negotiate_sink (GstPad *pad, GstCaps **caps, gint counter)
+{
+ GstCaps* tempcaps;
+
+ GstALawEnc* alawenc=GST_ALAWENC (GST_OBJECT_PARENT (pad));
+
+ if (*caps==NULL)
+ return GST_PAD_NEGOTIATE_FAIL;
+
+ tempcaps = gst_caps_copy(*caps);
+
+ gst_caps_set(tempcaps,"format",GST_PROPS_STRING("int"));
+ gst_caps_set(tempcaps,"law",GST_PROPS_INT(2));
+ gst_caps_set(tempcaps,"depth",GST_PROPS_INT(8));
+ gst_caps_set(tempcaps,"width",GST_PROPS_INT(8));
+ gst_caps_set(tempcaps,"signed",GST_PROPS_BOOLEAN(FALSE));
+
+ if (gst_pad_set_caps (alawenc->srcpad, tempcaps))
+ {
+ return GST_PAD_NEGOTIATE_AGREE;
+ }
+ else {
+ gst_caps_unref (tempcaps);
+ return GST_PAD_NEGOTIATE_FAIL;
+ }
+}
+
+GType
+gst_alawenc_get_type(void) {
+ static GType alawenc_type = 0;
+
+ if (!alawenc_type) {
+ static const GTypeInfo alawenc_info = {
+ sizeof(GstALawEncClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_alawenc_class_init,
+ NULL,
+ NULL,
+ sizeof(GstALawEnc),
+ 0,
+ (GInstanceInitFunc)gst_alawenc_init,
+ };
+ alawenc_type = g_type_register_static(GST_TYPE_ELEMENT, "GstALawEnc", &alawenc_info, 0);
+ }
+ return alawenc_type;
+}
+
+static void
+gst_alawenc_class_init (GstALawEncClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_alawenc_set_property;
+ gobject_class->get_property = gst_alawenc_get_property;
+}
+
+static void
+gst_alawenc_init (GstALawEnc *alawenc)
+{
+ alawenc->sinkpad = gst_pad_new_from_template(alawenc_sink_template,"sink");
+ alawenc->srcpad = gst_pad_new_from_template(alawenc_src_template,"src");
+ gst_pad_set_negotiate_function(alawenc->sinkpad, alawenc_negotiate_sink);
+
+ gst_element_add_pad(GST_ELEMENT(alawenc),alawenc->sinkpad);
+ gst_pad_set_chain_function(alawenc->sinkpad,gst_alawenc_chain);
+ gst_element_add_pad(GST_ELEMENT(alawenc),alawenc->srcpad);
+}
+
+static void
+gst_alawenc_chain (GstPad *pad,GstBuffer *buf)
+{
+ GstALawEnc *alawenc;
+ gint16 *linear_data;
+ guint8 *alaw_data;
+ GstBuffer* outbuf;
+
+ g_return_if_fail(pad != NULL);
+ g_return_if_fail(GST_IS_PAD(pad));
+ g_return_if_fail(buf != NULL);
+
+ alawenc = GST_ALAWENC(GST_OBJECT_PARENT (pad));
+ g_return_if_fail(alawenc != NULL);
+ g_return_if_fail(GST_IS_ALAWENC(alawenc));
+
+ linear_data = (gint16 *)GST_BUFFER_DATA(buf);
+ outbuf=gst_buffer_new();
+ GST_BUFFER_DATA(outbuf) = (gchar*)g_new(gint16,GST_BUFFER_SIZE(buf)/4);
+ GST_BUFFER_SIZE(outbuf) = GST_BUFFER_SIZE(buf)/2;
+
+ alaw_data = (guint8*)GST_BUFFER_DATA(outbuf);
+ mulaw_encode(linear_data,alaw_data,GST_BUFFER_SIZE(outbuf));
+ isdn_audio_ulaw2alaw(alaw_data,GST_BUFFER_SIZE(outbuf));
+ gst_buffer_unref(buf);
+ gst_pad_push(alawenc->srcpad,outbuf);
+}
+
+static void
+gst_alawenc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstALawEnc *alawenc;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_ALAWENC(object));
+ alawenc = GST_ALAWENC(object);
+
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_alawenc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstALawEnc *alawenc;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_ALAWENC(object));
+ alawenc = GST_ALAWENC(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
diff --git a/gst/law/alaw-encode.h b/gst/law/alaw-encode.h
new file mode 100644
index 00000000..023d0633
--- /dev/null
+++ b/gst/law/alaw-encode.h
@@ -0,0 +1,69 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_ALAWENCODE_H__
+#define __GST_ALAWENCODE_H__
+
+
+#include <config.h>
+#include <gst/gst.h>
+// #include <gst/meta/audioraw.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_ALAWENC \
+ (gst_alawenc_get_type())
+#define GST_ALAWENC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALAWENC,GstALawEnc))
+#define GST_ALAWENC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALAWENC,GstALawEnc))
+#define GST_IS_ALAWENC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALAWENC))
+#define GST_IS_ALAWENC_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALAWENC))
+
+typedef struct _GstALawEnc GstALawEnc;
+typedef struct _GstALawEncClass GstALawEncClass;
+
+struct _GstALawEnc {
+ GstElement element;
+
+ GstPad *sinkpad,*srcpad;
+
+ //MetaAudioRaw meta;
+
+};
+
+struct _GstALawEncClass {
+ GstElementClass parent_class;
+};
+
+GType gst_alawenc_get_type(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_STEREO_H__ */
diff --git a/gst/law/alaw.c b/gst/law/alaw.c
new file mode 100644
index 00000000..1b9afb5c
--- /dev/null
+++ b/gst/law/alaw.c
@@ -0,0 +1,95 @@
+#include "alaw-encode.h"
+#include "alaw-decode.h"
+
+static GstElementDetails alawenc_details = {
+ "PCM to A Law conversion",
+ "Filter/Effect",
+ "Convert 16bit PCM to 8bit A law",
+ VERSION,
+ "Zaheer Merali <zaheer@bellworldwide.net>",
+ "(C) 2001"
+};
+
+static GstElementDetails alawdec_details = {
+ "A Law to PCM conversion",
+ "Filter/Effect",
+ "Convert 8bit A law to 16bit PCM",
+ VERSION,
+ "Zaheer Merali <zaheer@bellworldwide.net>",
+ "(C) 2001"
+};
+
+static GstCaps*
+alaw_factory (void)
+{
+ return
+ gst_caps_new (
+ "test_src",
+ "audio/raw",
+ gst_props_new (
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT (2),
+ "width", GST_PROPS_INT(8),
+ "depth", GST_PROPS_INT(8),
+ "signed", GST_PROPS_BOOLEAN(FALSE),
+ NULL));
+}
+
+static GstCaps*
+linear_factory (void)
+{
+ return
+ gst_caps_new (
+ "test_sink",
+ "audio/raw",
+ gst_props_new (
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT(0),
+ "width", GST_PROPS_INT(16),
+ "depth", GST_PROPS_INT(16),
+ "signed", GST_PROPS_BOOLEAN(TRUE),
+ NULL));
+}
+
+GstPadTemplate *alawenc_src_template, *alawenc_sink_template;
+GstPadTemplate *alawdec_src_template, *alawdec_sink_template;
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *alawenc_factory, *alawdec_factory;
+ GstCaps* alaw_caps, *linear_caps;
+
+ alawenc_factory = gst_elementfactory_new("alawencode",GST_TYPE_ALAWENC,
+ &alawenc_details);
+ g_return_val_if_fail(alawenc_factory != NULL, FALSE);
+ alawdec_factory = gst_elementfactory_new("alawdecode",GST_TYPE_ALAWDEC,
+ &alawdec_details);
+ g_return_val_if_fail(alawdec_factory != NULL, FALSE);
+
+ alaw_caps = alaw_factory ();
+ linear_caps = linear_factory ();
+
+ alawenc_src_template = gst_padtemplate_new ("src",GST_PAD_SRC,GST_PAD_ALWAYS,alaw_caps, NULL);
+ alawenc_sink_template = gst_padtemplate_new ("sink",GST_PAD_SINK,GST_PAD_ALWAYS,linear_caps, NULL);
+ gst_elementfactory_add_padtemplate (alawenc_factory, alawenc_src_template);
+ gst_elementfactory_add_padtemplate (alawenc_factory, alawenc_sink_template);
+
+ alawdec_src_template = gst_padtemplate_new ("src",GST_PAD_SRC,GST_PAD_ALWAYS,linear_caps, NULL);
+ alawdec_sink_template = gst_padtemplate_new ("sink",GST_PAD_SINK,GST_PAD_ALWAYS,alaw_caps, NULL);
+
+ gst_elementfactory_add_padtemplate (alawdec_factory, alawdec_src_template);
+ gst_elementfactory_add_padtemplate (alawdec_factory, alawdec_sink_template);
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (alawenc_factory));
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (alawdec_factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "alaw",
+ plugin_init
+};
+
diff --git a/gst/law/mulaw-conversion.c b/gst/law/mulaw-conversion.c
new file mode 100644
index 00000000..ad3fcce6
--- /dev/null
+++ b/gst/law/mulaw-conversion.c
@@ -0,0 +1,102 @@
+/*
+ * This routine converts from linear to ulaw
+ * 29 September 1989
+ *
+ * Craig Reese: IDA/Supercomputing Research Center
+ * Joe Campbell: Department of Defense
+ *
+ * References:
+ * 1) CCITT Recommendation G.711 (very difficult to follow)
+ * 2) "A New Digital Technique for Implementation of Any
+ * Continuous PCM Companding Law," Villeret, Michel,
+ * et al. 1973 IEEE Int. Conf. on Communications, Vol 1,
+ * 1973, pg. 11.12-11.17
+ * 3) MIL-STD-188-113,"Interoperability and Performance Standards
+ * for Analog-to_Digital Conversion Techniques,"
+ * 17 February 1987
+ *
+ * Input: Signed 16 bit linear sample
+ * Output: 8 bit ulaw sample
+ */
+
+#include <glib.h>
+
+#define ZEROTRAP /* turn on the trap as per the MIL-STD */
+#define BIAS 0x84 /* define the add-in bias for 16 bit samples */
+#define CLIP 32635
+
+void
+mulaw_encode(gint16* in, guint8* out, gint numsamples)
+{
+ static gint16 exp_lut[256] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
+ 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
+ 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+ 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+ 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+ 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+ 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+ 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
+ gint16 sign, exponent, mantissa,i;
+ gint16 sample;
+ guint8 ulawbyte;
+
+ for(i=0;i<numsamples;i++) {
+ sample=in[i];
+ /** get the sample into sign-magnitude **/
+ sign = (sample >> 8) & 0x80; /* set aside the sign */
+ if (sign != 0) sample = -sample; /* get magnitude */
+ if (sample > CLIP) sample = CLIP; /* clip the magnitude */
+ /** convert from 16 bit linear to ulaw **/
+ sample = sample + BIAS;
+ exponent = exp_lut[(sample>>7) & 0xFF];
+ mantissa = (sample >> (exponent+3)) & 0x0F;
+ ulawbyte = ~(sign | (exponent << 4) | mantissa);
+#ifdef ZEROTRAP
+ if (ulawbyte == 0 ) ulawbyte = 0x02; /* optional CCITT trap */
+#endif
+ out[i]=ulawbyte;
+ }
+}
+
+/*
+ * This routine converts from ulaw to 16 bit linear
+ * 29 September 1989
+ *
+ * Craig Reese: IDA/Supercomputing Research Center
+ *
+ * References:
+ * 1) CCITT Recommendation G.711 (very difficult to follow)
+ * 2) MIL-STD-188-113,"Interoperability and Performance Standards
+ * for Analog-to_Digital Conversion Techniques,"
+ * 17 February 1987
+ *
+ * Input: 8 bit ulaw sample
+ * Output: signed 16 bit linear sample
+ */
+
+void
+mulaw_decode(guint8* in,gint16* out,gint numsamples)
+{
+ static gint16 exp_lut[8]={0,132,396,924,1980,4092,8316,16764};
+ gint16 sign, exponent, mantissa;
+ guint8 ulawbyte;
+ gint16 linear,i;
+ for(i=0;i<numsamples;i++) {
+ ulawbyte=in[i];
+ ulawbyte = ~ulawbyte;
+ sign = (ulawbyte & 0x80);
+ exponent = (ulawbyte >> 4) & 0x07;
+ mantissa = ulawbyte & 0x0F;
+ linear = exp_lut[exponent] + (mantissa << (exponent+3));
+ if (sign != 0) linear = -linear;
+ out[i]=linear;
+ }
+}
diff --git a/gst/law/mulaw-conversion.h b/gst/law/mulaw-conversion.h
new file mode 100644
index 00000000..55180121
--- /dev/null
+++ b/gst/law/mulaw-conversion.h
@@ -0,0 +1,10 @@
+#ifndef _GST_ULAWDECODE_H
+#define _GST_ULAWDECODE_H
+
+#include <glib.h>
+
+void
+mulaw_encode(gint16* in, guint8* out, gint numsamples);
+void
+mulaw_decode(guint8* in,gint16* out,gint numsamples);
+#endif
diff --git a/gst/law/mulaw-decode.c b/gst/law/mulaw-decode.c
new file mode 100644
index 00000000..d93c6904
--- /dev/null
+++ b/gst/law/mulaw-decode.c
@@ -0,0 +1,181 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gst/gst.h>
+#include "mulaw-decode.h"
+#include "mulaw-conversion.h"
+
+extern GstPadTemplate *mulawdec_src_template, *mulawdec_sink_template;
+
+
+/* Stereo signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0
+};
+
+static void gst_mulawdec_class_init (GstMuLawDecClass *klass);
+static void gst_mulawdec_init (GstMuLawDec *mulawdec);
+
+static void gst_mulawdec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_mulawdec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static void gst_mulawdec_chain (GstPad *pad, GstBuffer *buf);
+
+
+static GstElementClass *parent_class = NULL;
+//static guint gst_stereo_signals[LAST_SIGNAL] = { 0 };
+
+static GstPadNegotiateReturn
+mulawdec_negotiate_sink (GstPad *pad, GstCaps **caps, gint counter)
+{
+ GstCaps* tempcaps;
+
+ GstMuLawDec* mulawdec=GST_MULAWDEC (GST_OBJECT_PARENT (pad));
+
+ if (*caps==NULL)
+ return GST_PAD_NEGOTIATE_FAIL;
+
+ tempcaps = gst_caps_copy(*caps);
+
+ gst_caps_set(tempcaps,"format",GST_PROPS_STRING("int"));
+ gst_caps_set(tempcaps,"law",GST_PROPS_INT(0));
+ gst_caps_set(tempcaps,"depth",GST_PROPS_INT(16));
+ gst_caps_set(tempcaps,"width",GST_PROPS_INT(16));
+ gst_caps_set(tempcaps,"signed",GST_PROPS_BOOLEAN(TRUE));
+
+ if (gst_pad_set_caps (mulawdec->srcpad, tempcaps))
+ {
+ return GST_PAD_NEGOTIATE_AGREE;
+ }
+ else {
+ gst_caps_unref (tempcaps);
+ return GST_PAD_NEGOTIATE_FAIL;
+ }
+}
+
+GType
+gst_mulawdec_get_type(void) {
+ static GType mulawdec_type = 0;
+
+ if (!mulawdec_type) {
+ static const GTypeInfo mulawdec_info = {
+ sizeof(GstMuLawDecClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_mulawdec_class_init,
+ NULL,
+ NULL,
+ sizeof(GstMuLawDec),
+ 0,
+ (GInstanceInitFunc)gst_mulawdec_init,
+ };
+ mulawdec_type = g_type_register_static(GST_TYPE_ELEMENT, "GstMuLawDec", &mulawdec_info, 0);
+ }
+ return mulawdec_type;
+}
+
+static void
+gst_mulawdec_class_init (GstMuLawDecClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_mulawdec_set_property;
+ gobject_class->get_property = gst_mulawdec_get_property;
+}
+
+static void
+gst_mulawdec_init (GstMuLawDec *mulawdec)
+{
+ mulawdec->sinkpad = gst_pad_new_from_template(mulawdec_sink_template,"sink");
+ mulawdec->srcpad = gst_pad_new_from_template(mulawdec_src_template,"src");
+ gst_pad_set_negotiate_function(mulawdec->sinkpad, mulawdec_negotiate_sink);
+
+ gst_element_add_pad(GST_ELEMENT(mulawdec),mulawdec->sinkpad);
+ gst_pad_set_chain_function(mulawdec->sinkpad,gst_mulawdec_chain);
+ gst_element_add_pad(GST_ELEMENT(mulawdec),mulawdec->srcpad);
+}
+
+static void
+gst_mulawdec_chain (GstPad *pad,GstBuffer *buf)
+{
+ GstMuLawDec *mulawdec;
+ gint16 *linear_data;
+ guint8 *mulaw_data;
+ GstBuffer* outbuf;
+
+ g_return_if_fail(pad != NULL);
+ g_return_if_fail(GST_IS_PAD(pad));
+ g_return_if_fail(buf != NULL);
+
+ mulawdec = GST_MULAWDEC(GST_OBJECT_PARENT (pad));
+ g_return_if_fail(mulawdec != NULL);
+ g_return_if_fail(GST_IS_MULAWDEC(mulawdec));
+
+ mulaw_data = (guint8 *)GST_BUFFER_DATA(buf);
+ outbuf=gst_buffer_new();
+ GST_BUFFER_DATA(outbuf) = (gchar*)g_new(gint16,GST_BUFFER_SIZE(buf));
+ GST_BUFFER_SIZE(outbuf) = GST_BUFFER_SIZE(buf)*2;
+
+ linear_data = (gint16*)GST_BUFFER_DATA(outbuf);
+ mulaw_decode(mulaw_data,linear_data,GST_BUFFER_SIZE(buf));
+
+ gst_buffer_unref(buf);
+ gst_pad_push(mulawdec->srcpad,outbuf);
+}
+
+static void
+gst_mulawdec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstMuLawDec *mulawdec;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_MULAWDEC(object));
+ mulawdec = GST_MULAWDEC(object);
+
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_mulawdec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstMuLawDec *mulawdec;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_MULAWDEC(object));
+ mulawdec = GST_MULAWDEC(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
diff --git a/gst/law/mulaw-decode.h b/gst/law/mulaw-decode.h
new file mode 100644
index 00000000..431b1bdc
--- /dev/null
+++ b/gst/law/mulaw-decode.h
@@ -0,0 +1,69 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_MULAWDECODE_H__
+#define __GST_MULAWDECODE_H__
+
+
+#include <config.h>
+#include <gst/gst.h>
+// #include <gst/meta/audioraw.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_MULAWDEC \
+ (gst_mulawdec_get_type())
+#define GST_MULAWDEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULAWDEC,GstMuLawDec))
+#define GST_MULAWDEC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULAWDEC,GstMuLawDec))
+#define GST_IS_MULAWDEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWDEC))
+#define GST_IS_MULAWDEC_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWDEC))
+
+typedef struct _GstMuLawDec GstMuLawDec;
+typedef struct _GstMuLawDecClass GstMuLawDecClass;
+
+struct _GstMuLawDec {
+ GstElement element;
+
+ GstPad *sinkpad,*srcpad;
+
+ //MetaAudioRaw meta;
+
+};
+
+struct _GstMuLawDecClass {
+ GstElementClass parent_class;
+};
+
+GType gst_mulawdec_get_type(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_STEREO_H__ */
diff --git a/gst/law/mulaw-encode.c b/gst/law/mulaw-encode.c
new file mode 100644
index 00000000..40d868d9
--- /dev/null
+++ b/gst/law/mulaw-encode.c
@@ -0,0 +1,181 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gst/gst.h>
+#include "mulaw-encode.h"
+#include "mulaw-conversion.h"
+
+extern GstPadTemplate *mulawenc_src_template, *mulawenc_sink_template;
+
+
+/* Stereo signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0
+};
+
+static void gst_mulawenc_class_init (GstMuLawEncClass *klass);
+static void gst_mulawenc_init (GstMuLawEnc *mulawenc);
+
+static void gst_mulawenc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_mulawenc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static void gst_mulawenc_chain (GstPad *pad, GstBuffer *buf);
+
+
+static GstElementClass *parent_class = NULL;
+//static guint gst_stereo_signals[LAST_SIGNAL] = { 0 };
+
+static GstPadNegotiateReturn
+mulawenc_negotiate_sink (GstPad *pad, GstCaps **caps, gint counter)
+{
+ GstCaps* tempcaps;
+
+ GstMuLawEnc* mulawenc=GST_MULAWENC (GST_OBJECT_PARENT (pad));
+
+ if (*caps==NULL)
+ return GST_PAD_NEGOTIATE_FAIL;
+
+ tempcaps = gst_caps_copy(*caps);
+
+ gst_caps_set(tempcaps,"format",GST_PROPS_STRING("int"));
+ gst_caps_set(tempcaps,"law",GST_PROPS_INT(1));
+ gst_caps_set(tempcaps,"depth",GST_PROPS_INT(8));
+ gst_caps_set(tempcaps,"width",GST_PROPS_INT(8));
+ gst_caps_set(tempcaps,"signed",GST_PROPS_BOOLEAN(FALSE));
+
+ if (gst_pad_set_caps (mulawenc->srcpad, tempcaps))
+ {
+ return GST_PAD_NEGOTIATE_AGREE;
+ }
+ else {
+ gst_caps_unref (tempcaps);
+ return GST_PAD_NEGOTIATE_FAIL;
+ }
+}
+
+GType
+gst_mulawenc_get_type(void) {
+ static GType mulawenc_type = 0;
+
+ if (!mulawenc_type) {
+ static const GTypeInfo mulawenc_info = {
+ sizeof(GstMuLawEncClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_mulawenc_class_init,
+ NULL,
+ NULL,
+ sizeof(GstMuLawEnc),
+ 0,
+ (GInstanceInitFunc)gst_mulawenc_init,
+ };
+ mulawenc_type = g_type_register_static(GST_TYPE_ELEMENT, "GstMuLawEnc", &mulawenc_info, 0);
+ }
+ return mulawenc_type;
+}
+
+static void
+gst_mulawenc_class_init (GstMuLawEncClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_mulawenc_set_property;
+ gobject_class->get_property = gst_mulawenc_get_property;
+}
+
+static void
+gst_mulawenc_init (GstMuLawEnc *mulawenc)
+{
+ mulawenc->sinkpad = gst_pad_new_from_template(mulawenc_sink_template,"sink");
+ mulawenc->srcpad = gst_pad_new_from_template(mulawenc_src_template,"src");
+ gst_pad_set_negotiate_function(mulawenc->sinkpad, mulawenc_negotiate_sink);
+
+ gst_element_add_pad(GST_ELEMENT(mulawenc),mulawenc->sinkpad);
+ gst_pad_set_chain_function(mulawenc->sinkpad,gst_mulawenc_chain);
+ gst_element_add_pad(GST_ELEMENT(mulawenc),mulawenc->srcpad);
+}
+
+static void
+gst_mulawenc_chain (GstPad *pad,GstBuffer *buf)
+{
+ GstMuLawEnc *mulawenc;
+ gint16 *linear_data;
+ guint8 *mulaw_data;
+ GstBuffer* outbuf;
+
+ g_return_if_fail(pad != NULL);
+ g_return_if_fail(GST_IS_PAD(pad));
+ g_return_if_fail(buf != NULL);
+
+ mulawenc = GST_MULAWENC(GST_OBJECT_PARENT (pad));
+ g_return_if_fail(mulawenc != NULL);
+ g_return_if_fail(GST_IS_MULAWENC(mulawenc));
+
+ linear_data = (gint16 *)GST_BUFFER_DATA(buf);
+ outbuf=gst_buffer_new();
+ GST_BUFFER_DATA(outbuf) = (gchar*)g_new(gint16,GST_BUFFER_SIZE(buf)/4);
+ GST_BUFFER_SIZE(outbuf) = GST_BUFFER_SIZE(buf)/2;
+
+ mulaw_data = (gint8*)GST_BUFFER_DATA(outbuf);
+ mulaw_encode(linear_data,mulaw_data,GST_BUFFER_SIZE(outbuf));
+
+ gst_buffer_unref(buf);
+ gst_pad_push(mulawenc->srcpad,outbuf);
+}
+
+static void
+gst_mulawenc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstMuLawEnc *mulawenc;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_MULAWENC(object));
+ mulawenc = GST_MULAWENC(object);
+
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_mulawenc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstMuLawEnc *mulawenc;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_MULAWENC(object));
+ mulawenc = GST_MULAWENC(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
diff --git a/gst/law/mulaw-encode.h b/gst/law/mulaw-encode.h
new file mode 100644
index 00000000..009b470b
--- /dev/null
+++ b/gst/law/mulaw-encode.h
@@ -0,0 +1,69 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_MULAWENCODE_H__
+#define __GST_MULAWENCODE_H__
+
+
+#include <config.h>
+#include <gst/gst.h>
+// #include <gst/meta/audioraw.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_MULAWENC \
+ (gst_mulawenc_get_type())
+#define GST_MULAWENC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULAWENC,GstMuLawEnc))
+#define GST_MULAWENC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULAWENC,GstMuLawEnc))
+#define GST_IS_MULAWENC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWENC))
+#define GST_IS_MULAWENC_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWENC))
+
+typedef struct _GstMuLawEnc GstMuLawEnc;
+typedef struct _GstMuLawEncClass GstMuLawEncClass;
+
+struct _GstMuLawEnc {
+ GstElement element;
+
+ GstPad *sinkpad,*srcpad;
+
+ //MetaAudioRaw meta;
+
+};
+
+struct _GstMuLawEncClass {
+ GstElementClass parent_class;
+};
+
+GType gst_mulawenc_get_type(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_STEREO_H__ */
diff --git a/gst/law/mulaw.c b/gst/law/mulaw.c
new file mode 100644
index 00000000..5b97eca3
--- /dev/null
+++ b/gst/law/mulaw.c
@@ -0,0 +1,103 @@
+#include "mulaw-encode.h"
+#include "mulaw-decode.h"
+
+static GstElementDetails mulawenc_details = {
+ "PCM to Mu Law conversion",
+ "Filter/Effect",
+ "Convert 16bit PCM to 8bit mu law",
+ VERSION,
+ "Zaheer Merali <zaheer@bellworldwide.net>",
+ "(C) 2001"
+};
+
+static GstElementDetails mulawdec_details = {
+ "Mu Law to PCM conversion",
+ "Filter/Effect",
+ "Convert 8bit mu law to 16bit PCM",
+ VERSION,
+ "Zaheer Merali <zaheer@bellworldwide.net>",
+ "(C) 2001"
+};
+
+static GstCaps*
+mulaw_factory (void)
+{
+ return
+ gst_caps_new (
+ "test_src",
+ "audio/raw",
+ gst_props_new (
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT (1),
+ "width", GST_PROPS_INT(8),
+ "depth", GST_PROPS_INT(8),
+ "signed", GST_PROPS_BOOLEAN(FALSE),
+ NULL));
+}
+
+static GstCaps*
+linear_factory (void)
+{
+ return
+ gst_caps_new (
+ "test_sink",
+ "audio/raw",
+ gst_props_new (
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT(0),
+ "width", GST_PROPS_INT(16),
+ "depth", GST_PROPS_INT(16),
+ "signed", GST_PROPS_BOOLEAN(TRUE),
+ NULL));
+}
+
+GstPadTemplate *mulawenc_src_template, *mulawenc_sink_template;
+GstPadTemplate *mulawdec_src_template, *mulawdec_sink_template;
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *mulawenc_factory, *mulawdec_factory;
+ GstCaps* mulaw_caps, *linear_caps;
+
+ mulawenc_factory = gst_elementfactory_new("mulawencode",GST_TYPE_MULAWENC,
+ &mulawenc_details);
+ g_return_val_if_fail(mulawenc_factory != NULL, FALSE);
+ mulawdec_factory = gst_elementfactory_new("mulawdecode",GST_TYPE_MULAWDEC,
+ &mulawdec_details);
+ g_return_val_if_fail(mulawdec_factory != NULL, FALSE);
+
+ mulaw_caps = mulaw_factory ();
+ linear_caps = linear_factory ();
+
+ mulawenc_src_template = gst_padtemplate_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ mulaw_caps, NULL);
+ mulawenc_sink_template = gst_padtemplate_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+ linear_caps, NULL);
+
+ gst_elementfactory_add_padtemplate (mulawenc_factory, mulawenc_src_template);
+ gst_elementfactory_add_padtemplate (mulawenc_factory, mulawenc_sink_template);
+
+ mulawdec_src_template = gst_padtemplate_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ linear_caps, NULL);
+ mulawdec_sink_template = gst_padtemplate_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+ mulaw_caps, NULL);
+
+ gst_elementfactory_add_padtemplate (mulawdec_factory, mulawdec_src_template);
+ gst_elementfactory_add_padtemplate (mulawdec_factory, mulawdec_sink_template);
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (mulawenc_factory));
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (mulawdec_factory));
+
+
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "mulaw",
+ plugin_init
+};
+
generated by cgit (git 2.34.1) at 2024-07-02 05:08:06 +0000