git-svn-id: http://webrtc.googlecode.com/svn/trunk@4 4adac7df-926f-26a2-2b94-8c16560cd09d

modules/audio_coding/codecs/iSAC/main/source/arith_routines.h

@@ -0,0 +1,63 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * arith_routines.h
+ *
+ * Functions for arithmetic coding.
+ *
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_
+#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_
+
+#include "structs.h"
+
+
+int WebRtcIsac_EncLogisticMulti2(
+    Bitstr *streamdata,              /* in-/output struct containing bitstream */
+    WebRtc_Word16 *dataQ7,           /* input: data vector */
+    const WebRtc_UWord16 *env,       /* input: side info vector defining the width of the pdf */
+    const int N,                     /* input: data vector length */
+    const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */
+
+/* returns the number of bytes in the stream */
+int WebRtcIsac_EncTerminate(Bitstr *streamdata); /* in-/output struct containing bitstream */
+
+/* returns the number of bytes in the stream so far */
+int WebRtcIsac_DecLogisticMulti2(
+    WebRtc_Word16 *data,             /* output: data vector */
+    Bitstr *streamdata,              /* in-/output struct containing bitstream */
+    const WebRtc_UWord16 *env,       /* input: side info vector defining the width of the pdf */
+    const WebRtc_Word16 *dither,     /* input: dither vector */
+    const int N,                     /* input: data vector length */
+    const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */
+
+void WebRtcIsac_EncHistMulti(
+    Bitstr *streamdata,         /* in-/output struct containing bitstream */
+    const int *data,            /* input: data vector */
+    const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */
+    const int N);               /* input: data vector length */
+
+int WebRtcIsac_DecHistBisectMulti(
+    int *data,                      /* output: data vector */
+    Bitstr *streamdata,             /* in-/output struct containing bitstream */
+    const WebRtc_UWord16 **cdf,     /* input: array of cdf arrays */
+    const WebRtc_UWord16 *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */
+    const int N);                   /* input: data vector length */
+
+int WebRtcIsac_DecHistOneStepMulti(
+    int *data,                       /* output: data vector */
+    Bitstr *streamdata,              /* in-/output struct containing bitstream */
+    const WebRtc_UWord16 **cdf,      /* input: array of cdf arrays */
+    const WebRtc_UWord16 *init_index,/* input: vector of initial cdf table search entries */
+    const int N);                    /* input: data vector length */
+
+#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ */