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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 /libAACenc/src/bitenc.h
parenta37315fe10ee143d6d0b28c19d41a476a23e63ea (diff)
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Fraunhofer AAC codec.
License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
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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: Bitstream encoder
+
+******************************************************************************/
+#ifndef _BITENC_H
+#define _BITENC_H
+
+
+#include "qc_data.h"
+#include "aacenc_tns.h"
+#include "channel_map.h"
+#include "interface.h" /* obsolete, when PSY_OUT is thrown out of the WritBS-call! */
+#include "FDK_audio.h"
+#include "aacenc.h"
+
+#include "tpenc_lib.h"
+
+typedef enum{
+ MAX_ENCODER_CHANNELS = 9,
+ MAX_BLOCK_TYPES = 4,
+ MAX_AAC_LAYERS = 9,
+ MAX_LAYERS = MAX_AAC_LAYERS , /* only one core layer if present */
+ FIRST_LAY = 1 /* default layer number for AAC nonscalable */
+} _MAX_CONST;
+
+#define BUFFER_MX_HUFFCB_SIZE (32*sizeof(INT)) /* our FDK_bitbuffer needs size of power 2 */
+
+#define EL_ID_BITS ( 3 )
+
+
+/**
+ * \brief Arbitrary order bitstream writer. This function can either assemble a bit stream
+ * and write into the bit buffer of hTpEnc or calculate the number of static bits (signal independent)
+ * TpEnc handle must be NULL in this case. Or also Calculate the minimum possible number of
+ * static bits which by disabling all tools e.g. MS, TNS and sbfCnt=0. The minCnt parameter
+ * has to be 1 in this latter case.
+ * \param hTpEnc Transport encoder handle. If NULL, the number of static bits will be returned into
+ * *pBitDemand.
+ * \param pElInfo
+ * \param qcOutChannel
+ * \param hReorderInfo
+ * \param psyOutElement
+ * \param psyOutChannel
+ * \param syntaxFlags Bit stream syntax flags as defined in FDK_audio.h (Audio Codec flags).
+ * \param aot
+ * \param epConfig
+ * \param pBitDemand Pointer to an int where the amount of bits is returned into. The returned value
+ * depends on if hTpEnc is NULL and minCnt.
+ * \param minCnt If non-zero the value returned into *pBitDemand is the absolute minimum required amount of
+ * static bits in order to write a valid bit stream.
+ * \return AAC_ENCODER_ERROR error code
+ */
+AAC_ENCODER_ERROR FDKaacEnc_ChannelElementWrite( HANDLE_TRANSPORTENC hTpEnc,
+ ELEMENT_INFO *pElInfo,
+ QC_OUT_CHANNEL *qcOutChannel[(2)],
+ PSY_OUT_ELEMENT *psyOutElement,
+ PSY_OUT_CHANNEL *psyOutChannel[(2)],
+ UINT syntaxFlags,
+ AUDIO_OBJECT_TYPE aot,
+ SCHAR epConfig,
+ INT *pBitDemand,
+ UCHAR minCnt
+ );
+/**
+ * \brief Write bit stream or account static bits
+ * \param hTpEnc transport encoder handle. If NULL, the function will
+ * not write any bit stream data but only count the amount
+ * of static (signal independent) bits
+ * \param channelMapping Channel mapping info
+ * \param qcOut
+ * \param psyOut
+ * \param qcKernel
+ * \param hBSE
+ * \param aot Audio Object Type being encoded
+ * \param syntaxFlags Flags indicating format specific detail
+ * \param epConfig Error protection config
+ */
+AAC_ENCODER_ERROR FDKaacEnc_WriteBitstream (HANDLE_TRANSPORTENC hTpEnc,
+ CHANNEL_MAPPING *channelMapping,
+ QC_OUT* qcOut,
+ PSY_OUT* psyOut,
+ QC_STATE* qcKernel,
+ AUDIO_OBJECT_TYPE aot,
+ UINT syntaxFlags,
+ SCHAR epConfig
+ );
+
+INT FDKaacEnc_writeExtensionData( HANDLE_TRANSPORTENC hTpEnc,
+ QC_OUT_EXTENSION *pExtension,
+ INT elInstanceTag,
+ UINT alignAnchor,
+ UINT syntaxFlags,
+ AUDIO_OBJECT_TYPE aot,
+ SCHAR epConfig
+ );
+
+#endif /* _BITENC_H */