Mercurial > pidgin3 / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/mediastreamer/msLPC10encoder.h	Wed Nov 09 08:07:20 2005 +0000
@@ -0,0 +1,74 @@
+/*
+  The mediastreamer library aims at providing modular media processing and I/O
+	for linphone, but also for any telephony application.
+  Copyright (C) 2001  Simon MORLAT simon.morlat@linphone.org
+  										
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser 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 MSLPC10ENCODER_H
+#define MSLPC10ENCODER_H
+
+#include "mscodec.h"
+
+
+int
+read_16bit_samples(gint16 int16samples[], float speech[], int n);
+
+int
+write_16bit_samples(gint16 int16samples[], float speech[], int n);
+
+void
+write_bits(unsigned char *data, gint32 *bits, int len);
+
+int
+read_bits(unsigned char *data, gint32 *bits, int len);
+
+
+/*this is the class that implements a LPC10encoder filter*/
+
+#define MSLPC10ENCODER_MAX_INPUTS  1 /* max output per filter*/
+
+
+typedef struct _MSLPC10Encoder
+{
+    /* the MSLPC10Encoder derivates from MSFilter, so the MSFilter object MUST be the first of the MSLPC10Encoder object
+       in order to the object mechanism to work*/
+    MSFilter filter;
+    MSFifo *f_inputs[MSLPC10ENCODER_MAX_INPUTS];
+    MSFifo *f_outputs[MSLPC10ENCODER_MAX_INPUTS];
+    struct lpc10_encoder_state *lpc10_enc;
+} MSLPC10Encoder;
+
+typedef struct _MSLPC10EncoderClass
+{
+	/* the MSLPC10Encoder derivates from MSFilter, so the MSFilter class MUST be the first of the MSLPC10Encoder class
+       in order to the class mechanism to work*/
+	MSFilterClass parent_class;
+} MSLPC10EncoderClass;
+
+/* PUBLIC */
+#define MS_LPC10ENCODER(filter) ((MSLPC10Encoder*)(filter))
+#define MS_LPC10ENCODER_CLASS(klass) ((MSLPC10EncoderClass*)(klass))
+MSFilter * ms_LPC10encoder_new(void);
+
+/* FOR INTERNAL USE*/
+void ms_LPC10encoder_init(MSLPC10Encoder *r);
+void ms_LPC10encoder_class_init(MSLPC10EncoderClass *klass);
+void ms_LPC10encoder_destroy( MSLPC10Encoder *obj);
+void ms_LPC10encoder_process(MSLPC10Encoder *r);
+
+#endif