Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 167 insertions, 0 deletions

diff --git a/libSBRenc/src/env_est.h b/libSBRenc/src/env_est.h
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+++ b/libSBRenc/src/env_est.h
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+/****************************************************************************
+
+                     (C) Copyright Fraunhofer IIS (2004)
+                               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.
+
+ $Id$
+
+****************************************************************************/
+/*!
+  \file
+  \brief  Envelope estimation structs and prototypes $Revision: 36847 $
+*/
+#ifndef __ENV_EST_H
+#define __ENV_EST_H
+
+#include "sbr_def.h"
+#include "sbr_encoder.h" /* SBR econfig structs */
+#include "ps_main.h"
+#include "bit_sbr.h"
+#include "fram_gen.h"
+#include "tran_det.h"
+#include "code_env.h"
+#include "ton_corr.h"
+
+typedef struct
+{
+  FIXP_DBL  *rBuffer[QMF_MAX_TIME_SLOTS];
+  FIXP_DBL  *iBuffer[QMF_MAX_TIME_SLOTS];
+
+  FIXP_DBL  *p_YBuffer;
+
+  FIXP_DBL  *YBuffer[QMF_MAX_TIME_SLOTS];
+  int        YBufferScale[2];
+
+  UCHAR envelopeCompensation[MAX_FREQ_COEFFS];
+  UCHAR pre_transient_info[2];
+
+
+  int YBufferWriteOffset;
+  int YBufferSzShift;
+  int rBufferReadOffset;
+  int rBufferWriteOffset;
+
+  int no_cols;
+  int no_rows;
+  int start_index;
+
+  int time_slots;
+  int time_step;
+}
+SBR_EXTRACT_ENVELOPE;
+typedef SBR_EXTRACT_ENVELOPE *HANDLE_SBR_EXTRACT_ENVELOPE;
+
+struct ENV_CHANNEL
+{
+  SBR_TRANSIENT_DETECTOR sbrTransientDetector;
+  SBR_CODE_ENVELOPE sbrCodeEnvelope;
+  SBR_CODE_ENVELOPE sbrCodeNoiseFloor;
+  SBR_EXTRACT_ENVELOPE sbrExtractEnvelope;
+
+
+  SBR_ENVELOPE_FRAME SbrEnvFrame;
+  SBR_TON_CORR_EST   TonCorr;
+
+  struct SBR_ENV_DATA encEnvData;
+
+  int qmfScale;
+  UCHAR fLevelProtect;
+};
+typedef struct ENV_CHANNEL *HANDLE_ENV_CHANNEL;
+
+/************  Function Declarations ***************/
+
+INT
+FDKsbrEnc_CreateExtractSbrEnvelope (HANDLE_SBR_EXTRACT_ENVELOPE  hSbrCut,
+                                    INT channel
+                                   ,INT chInEl
+                                   ,UCHAR* dynamic_RAM
+                         );
+
+
+INT
+FDKsbrEnc_InitExtractSbrEnvelope (
+                          HANDLE_SBR_EXTRACT_ENVELOPE hSbr,
+                          int no_cols,
+                          int no_rows,
+                          int start_index,
+                          int time_slots, int time_step, int tran_off,
+                          ULONG statesInitFlag
+                         ,int chInEl
+                         ,UCHAR* dynamic_RAM
+                         ,UINT sbrSyntaxFlags
+                         );
+
+void FDKsbrEnc_deleteExtractSbrEnvelope (HANDLE_SBR_EXTRACT_ENVELOPE hSbrCut);
+
+typedef struct {
+    FREQ_RES res[MAX_NUM_NOISE_VALUES];
+    int maxQuantError;
+
+} SBR_FRAME_TEMP_DATA;
+
+typedef struct {
+    const SBR_FRAME_INFO *frame_info;
+    FIXP_DBL noiseFloor[MAX_NUM_NOISE_VALUES];
+    SCHAR sfb_nrg_coupling[MAX_NUM_ENVELOPE_VALUES]; /* only used if stereomode = SWITCH_L_R_C */
+    SCHAR sfb_nrg[MAX_NUM_ENVELOPE_VALUES];
+    SCHAR noise_level_coupling[MAX_NUM_NOISE_VALUES]; /* only used if stereomode = SWITCH_L_R_C */
+    SCHAR noise_level[MAX_NUM_NOISE_VALUES];
+    UCHAR transient_info[3];
+    UCHAR nEnvelopes;
+} SBR_ENV_TEMP_DATA;
+
+/*
+ * Extract features from QMF data. Afterwards, the QMF data is not required anymore.
+ */
+void
+FDKsbrEnc_extractSbrEnvelope1(
+                   HANDLE_SBR_CONFIG_DATA    h_con,
+                   HANDLE_SBR_HEADER_DATA    sbrHeaderData,
+                   HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData,
+                   HANDLE_ENV_CHANNEL        h_envChan,
+                   HANDLE_COMMON_DATA        cmonData,
+                   SBR_ENV_TEMP_DATA   *eData,
+                   SBR_FRAME_TEMP_DATA *fData
+                    );
+
+
+/*
+ * Process the previously features extracted by FDKsbrEnc_extractSbrEnvelope1
+ * and create/encode SBR envelopes.
+ */
+void
+FDKsbrEnc_extractSbrEnvelope2(
+                   HANDLE_SBR_CONFIG_DATA     h_con,
+                   HANDLE_SBR_HEADER_DATA     sbrHeaderData,
+                   HANDLE_PARAMETRIC_STEREO   hParametricStereo,
+                   HANDLE_SBR_BITSTREAM_DATA  sbrBitstreamData,
+                   HANDLE_ENV_CHANNEL         sbrEnvChannel0,
+                   HANDLE_ENV_CHANNEL         sbrEnvChannel1,
+                   HANDLE_COMMON_DATA         cmonData,
+                   SBR_ENV_TEMP_DATA         *eData,
+                   SBR_FRAME_TEMP_DATA       *fData,
+                   int                        clearOutput
+                   );
+
+INT
+FDKsbrEnc_GetEnvEstDelay(HANDLE_SBR_EXTRACT_ENVELOPE hSbr);
+
+#endif