Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 214 insertions, 0 deletions

diff --git a/libAACenc/src/qc_data.h b/libAACenc/src/qc_data.h
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+/******************************** MPEG Audio Encoder **************************
+
+                     (C) Copyright Fraunhofer IIS (1999)
+                               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.
+
+   $Id$
+   Initial author:       M. Werner
+   contents/description: Quantizing & coding data
+
+******************************************************************************/
+#ifndef _QC_DATA_H
+#define _QC_DATA_H
+
+
+#include "psy_const.h"
+#include "dyn_bits.h"
+#include "adj_thr_data.h"
+#include "line_pe.h"
+#include "FDK_audio.h"
+#include "interface.h"
+
+
+typedef enum {
+  QCDATA_BR_MODE_INVALID = -1,
+  QCDATA_BR_MODE_CBR     =  0,
+  QCDATA_BR_MODE_VBR_1   =  1, /* 32 kbps/channel */
+  QCDATA_BR_MODE_VBR_2   =  2, /* 40 kbps/channel */
+  QCDATA_BR_MODE_VBR_3   =  3, /* 48 kbps/channel */
+  QCDATA_BR_MODE_VBR_4   =  4, /* 64 kbps/channel */
+  QCDATA_BR_MODE_VBR_5   =  5, /* 96 kbps/channel */
+  QCDATA_BR_MODE_FF      =  6,  /* Fixed frame mode. */
+  QCDATA_BR_MODE_SFR     =  7  /* Superframe mode. */
+
+
+} QCDATA_BR_MODE;
+
+typedef struct {
+  MP4_ELEMENT_ID elType;
+  INT instanceTag;
+  INT nChannelsInEl;
+  INT ChannelIndex[2];
+  FIXP_DBL relativeBits;
+} ELEMENT_INFO;
+
+typedef struct {
+  CHANNEL_MODE encMode;
+  INT nChannels;
+  INT nChannelsEff;
+  INT nElements;
+  ELEMENT_INFO elInfo[(6)];
+//  INT elDSE;                   /* DSE element signalling */
+} CHANNEL_MAPPING;
+
+typedef struct {
+  INT paddingRest;
+} PADDING;
+
+
+/* Quantizing & coding stage */
+
+struct QC_INIT{
+  CHANNEL_MAPPING* channelMapping;
+  INT sceCpe;      /* not used yet                         */
+  INT maxBits;     /* maximum number of bits in reservoir  */
+  INT averageBits; /* average number of bits we should use */
+  INT bitRes;
+  INT staticBits;  /* Bits per frame consumed by transport layers. */
+  QCDATA_BR_MODE bitrateMode;
+  INT meanPe;
+  INT chBitrate;
+  INT invQuant;
+  INT maxIterations; /* Maximum number of allowed iterations before FDKaacEnc_crashRecovery() is applied. */
+  FIXP_DBL maxBitFac;
+  INT bitrate;
+  INT nSubFrames; /* helper variable */
+  INT minBits;    /* minimal number of bits in one frame*/
+
+  PADDING padding;
+};
+
+typedef struct
+{
+  FIXP_DBL      mdctSpectrum[(1024)];
+
+  SHORT         quantSpec[(1024)];
+
+  UINT          maxValueInSfb[MAX_GROUPED_SFB];
+  INT           scf[MAX_GROUPED_SFB];
+  INT           globalGain;
+  SECTION_DATA  sectionData;
+
+  FIXP_DBL      sfbFormFactorLdData[MAX_GROUPED_SFB];
+
+  FIXP_DBL      sfbThresholdLdData[MAX_GROUPED_SFB];
+  FIXP_DBL      sfbMinSnrLdData[MAX_GROUPED_SFB];
+  FIXP_DBL      sfbEnergyLdData[MAX_GROUPED_SFB];
+  FIXP_DBL      sfbEnergy[MAX_GROUPED_SFB];
+  FIXP_DBL      sfbWeightedEnergyLdData[MAX_GROUPED_SFB];
+
+  FIXP_DBL      sfbEnFacLd[MAX_GROUPED_SFB];
+
+  FIXP_DBL      sfbSpreadEnergy[MAX_GROUPED_SFB];
+
+} QC_OUT_CHANNEL;
+
+
+typedef struct
+{
+  EXT_PAYLOAD_TYPE  type;  /* type of the extension payload */
+  INT    nPayloadBits;     /* size of the payload */
+  UCHAR *pPayload;         /* pointer to payload */
+
+} QC_OUT_EXTENSION;
+
+
+typedef struct
+{
+  INT          staticBitsUsed; /* for verification purposes */
+  INT          dynBitsUsed;    /* for verification purposes */
+
+  INT          extBitsUsed;    /* bit consumption of extended fill elements */
+  INT          nExtensions;    /* number of extension payloads for this element */
+  QC_OUT_EXTENSION extension[(1)];  /* reffering extension payload */
+
+  INT          grantedDynBits;
+
+  INT          grantedPe;
+  INT          grantedPeCorr;
+
+  PE_DATA      peData;
+
+  QC_OUT_CHANNEL *qcOutChannel[(2)];
+
+
+} QC_OUT_ELEMENT;
+
+typedef struct
+{
+  QC_OUT_ELEMENT    *qcElement[(6)];
+  QC_OUT_CHANNEL    *pQcOutChannels[(6)];
+  QC_OUT_EXTENSION   extension[(2+2)];  /* global extension payload */
+  INT          nExtensions;       /* number of extension payloads for this AU */
+  INT          maxDynBits;        /* maximal allowed dynamic bits in frame */
+  INT          grantedDynBits;    /* granted dynamic bits in frame */
+  INT          totFillBits;       /* fill bits */
+  INT          elementExtBits;    /* element associated extension payload bits, e.g. sbr, drc ... */
+  INT          globalExtBits;     /* frame/au associated extension payload bits (anc data ...) */
+  INT          staticBits;        /* aac side info bits */
+
+  INT          totalNoRedPe;
+  INT          totalGrantedPeCorr;
+
+  INT          usedDynBits;       /* number of dynamic bits in use */
+  INT          alignBits;         /* AU alignment bits */
+  INT          totalBits;         /* sum of static, dyn, sbr, fill, align and dse bits */
+
+} QC_OUT;
+
+typedef struct {
+  INT chBitrateEl;                    /* channel bitrate in element (totalbitrate*el_relativeBits/el_channels) */
+  INT maxBitsEl;                      /* used in crash recovery */
+  INT bitResLevelEl;                  /* update bitreservoir level in each call of FDKaacEnc_QCMain */
+  INT maxBitResBitsEl;                /* nEffChannels*6144 - averageBitsInFrame */
+  FIXP_DBL relativeBitsEl;            /* Bits relative to total Bits*/
+} ELEMENT_BITS;
+
+typedef struct
+{
+  /* this is basically struct QC_INIT */
+
+  INT globHdrBits;
+  INT maxBitsPerFrame;   /* maximal allowed bits per frame, 6144*nChannelsEff */
+  INT minBitsPerFrame;   /* minimal allowd bits per fram, superframing - DRM */
+  INT nElements;
+  QCDATA_BR_MODE bitrateMode;
+  INT bitDistributenMode; /* 0: full bitreservoir, 1: reduced bitreservoir, 2: disabled bitreservoir */
+  INT bitResTot;
+  INT bitResTotMax;
+  INT maxIterations;      /* Maximum number of allowed iterations before FDKaacEnc_crashRecovery() is applied. */
+  INT invQuant;
+
+  FIXP_DBL vbrQualFactor;
+  FIXP_DBL maxBitFac;
+
+  PADDING padding;
+
+  ELEMENT_BITS  *elementBits[(6)];
+  BITCNTR_STATE *hBitCounter;
+  ADJ_THR_STATE *hAdjThr;
+
+} QC_STATE;
+
+#endif /* _QC_DATA_H */
+
+
+
+