From 9bf37cc9712506b2483650c82d3c41152337ef7e Mon Sep 17 00:00:00 2001
From: Dave Burke <daveburke@google.com>
Date: Tue, 17 Apr 2012 09:51:45 -0700
Subject: Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
---
 libSBRdec/src/psdec_hybrid.h | 109 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 libSBRdec/src/psdec_hybrid.h

(limited to 'libSBRdec/src/psdec_hybrid.h')

diff --git a/libSBRdec/src/psdec_hybrid.h b/libSBRdec/src/psdec_hybrid.h
new file mode 100644
index 0000000..69e8707
--- /dev/null
+++ b/libSBRdec/src/psdec_hybrid.h
@@ -0,0 +1,109 @@
+/****************************************************************************
+
+                     (C) Copyright Fraunhofer IIS (2005)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+  $Id$
+
+*******************************************************************************/
+
+
+#ifndef __HYBRID_H
+#define __HYBRID_H
+
+#include "sbrdecoder.h"
+
+
+#define HYBRID_FILTER_LENGTH  13
+#define HYBRID_FILTER_DELAY    6
+
+
+#define FAST_FILTER2
+#define FAST_FILTER4
+#define FAST_FILTER8
+#define FAST_FILTER12
+
+#define FFT_IDX_R(a)  (2*a)
+#define FFT_IDX_I(a)  (2*a+1)
+
+#define FIXP_FFT_IDX_R(a)   (a<<1)
+#define FIXP_FFT_IDX_I(a)  ((a<<1) + 1)
+
+
+typedef enum {
+
+  HYBRID_2_REAL     = 2,
+  HYBRID_4_CPLX     = 4,
+  HYBRID_8_CPLX     = 8,
+  HYBRID_12_CPLX    = 12
+
+} HYBRID_RES;
+
+typedef struct
+{
+  SCHAR   nQmfBands;
+  SCHAR   frameSize;
+  SCHAR   qmfBufferMove;
+
+  UCHAR   pResolution[3];
+
+  FIXP_DBL mQmfBufferRealSlot[3][HYBRID_FILTER_LENGTH];   /**< Stores old Qmf samples. */
+  FIXP_DBL mQmfBufferImagSlot[3][HYBRID_FILTER_LENGTH];
+  SCHAR sf_mQmfBuffer;
+
+} HYBRID;
+
+typedef HYBRID *HANDLE_HYBRID;
+
+void
+fillHybridDelayLine( FIXP_DBL **fixpQmfReal,
+                     FIXP_DBL **fixpQmfImag,
+                     FIXP_DBL   fixpHybridLeftR[12],
+                     FIXP_DBL   fixpHybridLeftI[12],
+                     FIXP_DBL   fixpHybridRightR[12],
+                     FIXP_DBL   fixpHybridRightI[12],
+                     HANDLE_HYBRID hHybrid );
+
+void
+slotBasedHybridAnalysis ( FIXP_DBL *fixpQmfReal,
+                          FIXP_DBL *fixpQmfImag,
+
+                          FIXP_DBL  *fixpHybridReal,
+                          FIXP_DBL  *fixpHybridImag,
+
+                          HANDLE_HYBRID hHybrid);
+
+
+void
+slotBasedHybridSynthesis ( FIXP_DBL  *fixpHybridReal,
+                           FIXP_DBL  *fixpHybridImag,
+
+                           FIXP_DBL  *fixpQmfReal,
+                           FIXP_DBL  *fixpQmfImag,
+
+                           HANDLE_HYBRID hHybrid );
+
+SBR_ERROR InitHybridFilterBank ( HANDLE_HYBRID  hHybrid,
+                                 SCHAR frameSize,
+                                 SCHAR noBands,
+                                 const UCHAR *pResolution );
+
+
+#endif /* __HYBRID_H */
-- 
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