Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 204 insertions, 0 deletions

diff --git a/libMpegTPEnc/src/tpenc_latm.h b/libMpegTPEnc/src/tpenc_latm.h
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+/*****************************  MPEG-4 AAC Encoder  **************************
+
+                        (C) Copyright Fraunhofer IIS (2001)
+                               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.
+
+
+   $Id$
+   Author(s):
+   Description:
+
+   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.
+
+******************************************************************************/
+
+#ifndef TPENC_LATM_H
+#define TPENC_LATM_H
+
+
+
+#include "tpenc_lib.h"
+#include "FDK_bitstream.h"
+
+
+#define DEFAULT_LATM_NR_OF_SUBFRAMES 1
+#define DEFAULT_LATM_SMC_REPEAT      8
+
+#define MAX_AAC_LAYERS        9
+
+#define LATM_MAX_PROGRAMS     1
+#define LATM_MAX_STREAM_ID   16
+
+#define LATM_MAX_LAYERS       1 /*MAX_AAC_LAYERS*/
+
+#define MAX_NR_OF_SUBFRAMES   2           /* set this carefully to avoid buffer overflows */
+
+typedef enum { LATMVAR_SIMPLE_SEQUENCE } LATM_VAR_MODE;
+
+typedef struct {
+  signed int frameLengthType;
+  signed int frameLengthBits;
+  signed int varFrameLengthTable[4];
+  signed int streamID;
+} LATM_LAYER_INFO;
+
+#define LATM_ASSEMBLEBUF_SIZE ((200+16)*8)
+#define LATM_SETUPBUF_SIZE    (200*8)
+
+typedef struct {
+  LATM_LAYER_INFO      m_linfo[LATM_MAX_PROGRAMS][LATM_MAX_LAYERS];
+  CODER_CONFIG        *config[LATM_MAX_PROGRAMS][LATM_MAX_LAYERS];
+
+  LATM_VAR_MODE        varMode;
+  TRANSPORT_TYPE       tt;
+
+  int                  audioMuxLengthBytes;
+
+  int                  audioMuxLengthBytesPos;
+  int                  taraBufferFullness; /* state of the bit reservoir */
+  int                  varStreamCnt;
+  unsigned int         otherDataLenBytes;
+
+  UCHAR                latmFrameCounter;   /* Current frame number. Counts modulo muxConfigPeriod */
+  UCHAR                muxConfigPeriod;    /* Distance in frames between MuxConfig */
+
+  UCHAR                audioMuxVersion;    /* AMV1 supports transmission of taraBufferFullness and ASC lengths */
+  UCHAR                audioMuxVersionA;   /* for future extensions */
+
+  UCHAR                noProgram;
+  UCHAR                noLayer[LATM_MAX_PROGRAMS];
+  UCHAR                fractDelayPresent;
+
+  UCHAR                allStreamsSameTimeFraming;
+  UCHAR                subFrameCnt;        /* Current Subframe frame */
+  UCHAR                noSubframes;        /* Number of subframes    */
+  UINT                 latmSubframeStart;  /* Position of current subframe start */
+  UCHAR                noSubframes_next;
+
+  UCHAR                fillBits;           /* AudioMuxElement fill bits */
+  UCHAR                streamMuxConfigBits;
+
+} LATM_STREAM;
+
+typedef LATM_STREAM *HANDLE_LATM_STREAM;
+
+/**
+ * \brief Initialize LATM_STREAM Handle. Creates automatically one program with one layer with
+ *        the given layerConfig. The layerConfig must be persisten because references to this pointer
+ *        are made at any time again.
+ *        Use transportEnc_Latm_AddLayer() to add more programs/layers.
+ *
+ * \param hLatmStreamInfo HANDLE_LATM_STREAM handle
+ * \param hBs Bitstream handle
+ * \param layerConfig a valid CODER_CONFIG struct containing the current audio configuration parameters
+ * \param audioMuxVersion the LATM audioMuxVersion to be used
+ * \param tt the specific TRANSPORT_TYPE to be used, either TT_MP4_LOAS, TT_MP4_LATM_MCP1 or TT_MP4_LATM_MCP0 LOAS
+ * \param cb callback information structure.
+ *
+ * \return an TRANSPORTENC_ERROR error code
+ */
+TRANSPORTENC_ERROR transportEnc_Latm_Init(
+        HANDLE_LATM_STREAM hLatmStreamInfo,
+        HANDLE_FDK_BITSTREAM hBs,
+        CODER_CONFIG *layerConfig,
+        UINT audioMuxVersion,
+        TRANSPORT_TYPE tt,
+        CSTpCallBacks *cb
+        );
+
+/**
+ * \brief Get bit demand of next LATM/LOAS header
+ *
+ * \param hAss HANDLE_LATM_STREAM handle
+ * \param streamDataLength the length of the payload
+ *
+ * \return the number of bits required by the LATM/LOAS headers
+ */
+unsigned int transportEnc_LatmCountTotalBitDemandHeader (
+                                                          HANDLE_LATM_STREAM hAss,
+                                                          unsigned int streamDataLength
+                                                         );
+
+/**
+ * \brief Write LATM/LOAS header into given bitstream handle
+ *
+ * \param hLatmStreamInfo HANDLE_LATM_STREAM handle
+ * \param hBitstream Bitstream handle
+ * \param auBits amount of current payload bits
+ * \param bufferFullness LATM buffer fullness value
+ * \param cb callback information structure.
+ *
+ * \return an TRANSPORTENC_ERROR error code
+ */
+TRANSPORTENC_ERROR
+transportEnc_LatmWrite (
+        HANDLE_LATM_STREAM    hAss,
+        HANDLE_FDK_BITSTREAM  hBitstream,
+        int                   auBits,
+        int                   bufferFullness,
+        CSTpCallBacks     *cb
+        );
+
+/**
+ * \brief Adjust bit count relative to current subframe
+ *
+ * \param hAss HANDLE_LATM_STREAM handle
+ * \param pBits pointer to an int, where the current frame bit count is contained,
+ *        and where the subframe relative bit count will be returned into
+ *
+ * \return void
+ */
+void transportEnc_LatmAdjustSubframeBits(HANDLE_LATM_STREAM    hAss,
+                                         int                  *pBits);
+
+/**
+ * \brief Request an LATM frame, which may, or may not be available
+ *
+ * \param hAss HANDLE_LATM_STREAM handle
+ * \param hBs Bitstream handle
+ * \param pBytes pointer to an int, where the current frame byte count stored into.
+ *        A return value of zero means that currently no LATM/LOAS frame can be returned.
+ *        The latter is expected in case of multiple subframes being used.
+ *
+ * \return void
+ */
+void transportEnc_LatmGetFrame(
+                               HANDLE_LATM_STREAM    hAss,
+                               HANDLE_FDK_BITSTREAM  hBs,
+                               int                  *pBytes
+                               );
+
+/**
+ * \brief Write a StreamMuxConfig into the given bitstream handle
+ *
+ * \param hAss HANDLE_LATM_STREAM handle
+ * \param hBs Bitstream handle
+ * \param bufferFullness LATM buffer fullness value
+ * \param cb callback information structure.
+ *
+ * \return void
+ */
+TRANSPORTENC_ERROR
+CreateStreamMuxConfig(
+        HANDLE_LATM_STREAM hAss,
+        HANDLE_FDK_BITSTREAM hBs,
+        int bufferFullness,
+        CSTpCallBacks *cb
+        );
+
+
+#endif /* TPENC_LATM_H */