Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db

Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54

1 files changed, 236 insertions, 0 deletions

diff --git a/libMpegTPDec/src/tpdec_adts.h b/libMpegTPDec/src/tpdec_adts.h
new file mode 100644
index 0000000..def6aa0
--- /dev/null
+++ b/libMpegTPDec/src/tpdec_adts.h
@@ -0,0 +1,236 @@
+
+/* -----------------------------------------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+  All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
+the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
+This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
+audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
+independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
+of the MPEG specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
+may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
+individually for the purpose of encoding or decoding bit streams in products that are compliant with
+the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
+these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
+software may already be covered under those patent licenses when it is used for those licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
+are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
+applications information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification, are permitted without
+payment of copyright license fees provided that you satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
+your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation and/or other materials
+provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
+You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived from this library without
+prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
+software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
+and the date of any change. For modified versions of the FDK AAC Codec, the term
+"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
+"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
+ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
+respect to this software.
+
+You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
+by appropriate patent licenses.
+
+4.    DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
+"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
+of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
+including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
+or business interruption, however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of this software, even if
+advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------------------------------------- */
+
+/*****************************  MPEG-4 AAC Decoder  **************************
+
+   Author(s):   Josef Hoepfl
+   Description: ADTS interface
+
+******************************************************************************/
+
+#ifndef TPDEC_ADTS_H
+#define TPDEC_ADTS_H
+
+#include "tpdec_lib.h"
+
+
+#define ADTS_SYNCWORD               ( 0xfff )
+#define ADTS_SYNCLENGTH             ( 12 )     /* in bits */
+#define ADTS_HEADERLENGTH           ( 56 )     /* minimum header size in bits */
+#define ADTS_FIXED_HEADERLENGTH     ( 28 )     /* in bits */
+#define ADTS_VARIABLE_HEADERLENGTH  ( ADTS_HEADERLENGTH - ADTS_FIXED_HEADERLENGTH )
+
+#ifdef CHECK_TWO_SYNCS
+ #define ADTS_MIN_TP_BUF_SIZE       ( 8191 + 2 )
+#else
+ #define ADTS_MIN_TP_BUF_SIZE       ( 8191 )
+#endif
+
+#include "FDK_crc.h"
+
+typedef struct {
+  /* ADTS header fields */
+  UCHAR mpeg_id;
+  UCHAR layer;
+  UCHAR protection_absent;
+  UCHAR profile;
+  UCHAR sample_freq_index;
+  UCHAR private_bit;
+  UCHAR channel_config;
+  UCHAR original;
+  UCHAR home;
+  UCHAR copyright_id;
+  UCHAR copyright_start;
+  USHORT frame_length;
+  USHORT adts_fullness;
+  UCHAR num_raw_blocks;
+  UCHAR num_pce_bits;
+} STRUCT_ADTS_BS;
+
+struct STRUCT_ADTS {
+
+  STRUCT_ADTS_BS bs;
+
+  UCHAR decoderCanDoMpeg4;
+  UCHAR BufferFullnesStartFlag;
+
+  FDK_CRCINFO crcInfo;             /* CRC state info */
+  USHORT      crcReadValue;        /* CRC value read from bitstream data */
+  USHORT      rawDataBlockDist[4]; /* distance between each raw data block. Not the same as found in the bitstream */
+} ;
+
+typedef struct STRUCT_ADTS *HANDLE_ADTS;
+
+/*!
+  \brief Initialize ADTS CRC
+
+  The function initialzes the crc buffer and the crc lookup table.
+
+  \return  none
+*/
+void adtsRead_CrcInit( HANDLE_ADTS pAdts );
+
+/**
+ * \brief Starts CRC region with a maximum number of bits
+ *        If mBits is positive zero padding will be used for CRC calculation, if there
+ *        are less than mBits bits available.
+ *        If mBits is negative no zero padding is done.
+ *        If mBits is zero the memory for the buffer is allocated dynamically, the
+ *        number of bits is not limited.
+ *
+ * \param pAdts ADTS data handle
+ * \param hBs bitstream handle, on which the CRC region referes to
+ * \param mBits max number of bits in crc region to be considered
+ *
+ * \return  ID for the created region, -1 in case of an error
+ */
+int adtsRead_CrcStartReg(
+        HANDLE_ADTS pAdts,
+        HANDLE_FDK_BITSTREAM hBs,
+        int mBits
+        );
+
+/**
+ * \brief Ends CRC region identified by reg
+ *
+ * \param pAdts ADTS data handle
+ * \param hBs bitstream handle, on which the CRC region referes to
+ * \param reg CRC regions ID returned by adtsRead_CrcStartReg()
+ *
+ * \return  none
+ */
+void adtsRead_CrcEndReg(
+        HANDLE_ADTS pAdts,
+        HANDLE_FDK_BITSTREAM hBs,
+        int reg
+        );
+
+/**
+ * \brief Check CRC
+ *
+ * Checks if the currently calculated CRC matches the CRC field read from the bitstream
+ * Deletes all CRC regions.
+ *
+ * \param pAdts ADTS data handle
+ *
+ * \return Returns 0 if they are identical otherwise 1
+ */
+TRANSPORTDEC_ERROR adtsRead_CrcCheck( HANDLE_ADTS pAdts );
+
+
+/**
+ * \brief Check if we have a valid ADTS frame at the current bitbuffer position
+ *
+ * This function assumes enough bits in buffer for the current frame.
+ * It reads out the header bits to prepare the bitbuffer for the decode loop.
+ * In case the header bits show an invalid bitstream/frame, the whole frame is skipped.
+ *
+ * \param pAdts ADTS data handle which is filled with parsed ADTS header data
+ * \param bs handle of bitstream from whom the ADTS header is read
+ *
+ * \return  error status
+ */
+TRANSPORTDEC_ERROR adtsRead_DecodeHeader(
+        HANDLE_ADTS           pAdts,
+        CSAudioSpecificConfig *pAsc,
+        HANDLE_FDK_BITSTREAM  bs,
+        const INT             ignoreBufferFullness
+        );
+
+/**
+ * \brief Get the raw data block length of the given block number.
+ *
+ * \param pAdts ADTS data handle
+ * \param blockNum current raw data block index
+ * \param pLength pointer to an INT where the length of the given raw data block is stored into
+ *                the returned value might be -1, in which case the raw data block length is unknown.
+ *
+ * \return  error status
+ */
+int adtsRead_GetRawDataBlockLength(
+        HANDLE_ADTS pAdts,
+        INT         blockNum
+        );
+
+
+#endif /* TPDEC_ADTS_H */