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authorDave Burke <daveburke@google.com>2012-04-17 09:51:45 -0700
committerDave Burke <daveburke@google.com>2012-04-17 23:04:43 -0700
commit9bf37cc9712506b2483650c82d3c41152337ef7e (patch)
tree77db44e2bae06e3d144b255628be2b7a55c581d3 /libSBRenc/src/env_est.h
parenta37315fe10ee143d6d0b28c19d41a476a23e63ea (diff)
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Fraunhofer AAC codec.
License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
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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