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diff --git a/libSYS/include/wav_file.h b/libSYS/include/wav_file.h new file mode 100644 index 0000000..e9c4e70 --- /dev/null +++ b/libSYS/include/wav_file.h @@ -0,0 +1,212 @@ + +/* ----------------------------------------------------------------------------------------------------------- +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 +----------------------------------------------------------------------------------------------------------- */ + +/************************** Fraunhofer IIS FDK SysLib ********************** + + Author(s): Eric Allamanche + +******************************************************************************/ + +/** \file wav_file.h + * \brief Rudimentary WAVE file read/write support. + * + * The WAVE file reader/writer is intented to be used in the codec's example + * framework for easily getting started with encoding/decoding. Therefore + * it serves mainly for helping quickly understand how a codec's API actually + * works. + * Being a WAVE file reader/writer with very basic functionality, it may not be + * able to read WAVE files that come with unusual configurations. + * Details on how to use the interface functions can be found in every + * (encoder/decoder) example framework. + */ + +#ifndef __WAV_FILE_H__ +#define __WAV_FILE_H__ + + + +#include "genericStds.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/*! + * RIFF WAVE file struct. + * For details see WAVE file format documentation (for example at http://www.wotsit.org). + */ +typedef struct WAV_HEADER +{ + char riffType[4]; + UINT riffSize; + char waveType[4]; + char formatType[4]; + UINT formatSize; + USHORT compressionCode; + USHORT numChannels; + UINT sampleRate; + UINT bytesPerSecond; + USHORT blockAlign; + USHORT bitsPerSample; + char dataType[4]; + UINT dataSize; +} WAV_HEADER; + +struct WAV +{ + WAV_HEADER header; + FDKFILE *fp; +}; + +typedef struct WAV *HANDLE_WAV; + +/** + * \brief Open a WAV file handle for reading. + * + * \param pWav Pointer to a memory location, where a WAV handle is returned. + * \param filename File name to be opened. + * + * \return 0 on success and non-zero on failure. + */ +INT WAV_InputOpen (HANDLE_WAV *pWav, const char *filename); + +/** + * \brief Read samples from a WAVE file. The samples are automatically re-ordered to the + * native host endianess and scaled to full scale of the INT_PCM type, from + * whatever BPS the WAVE file had specified in its header data. + * + * \param wav Handle of WAV file. + * \param sampleBuffer Pointer to store audio data. + * \param numSamples Desired number of samples to read. + * \param nBufBits Size in bit of each audio sample of sampleBuffer. + * + * \return Number of samples actually read. + */ +INT WAV_InputRead (HANDLE_WAV wav, void *sampleBuffer, UINT numSamples, int nBufBits); + +/** + * \brief Close a WAV file reading handle. + * \param pWav Pointer to a WAV file reading handle. + * \return void + */ +void WAV_InputClose(HANDLE_WAV *pWav); + +/** + * \brief Open WAV output/writer handle. + * + * \param pWav Pointer to WAV handle to be returned. + * \param outputFilename File name of the file to be written to. + * \param sampleRate Desired samplerate of the resulting WAV file. + * \param numChannels Desired number of audio channels of the resulting WAV file. + * \param bitsPerSample Desired number of bits per audio sample of the resulting WAV file. + * + * \return 0: ok; -1: error + */ +INT WAV_OutputOpen(HANDLE_WAV *pWav, const char *outputFilename, INT sampleRate, INT numChannels, INT bitsPerSample); + +/** + * \brief Write data to WAV file asociated to WAV handle. + * + * \param wav Handle of WAV file + * \param sampleBuffer Pointer to audio samples, right justified integer values. + * \param numberOfSamples The number of individual audio sample valuesto be written. + * \param nBufBits Size in bits of each audio sample in sampleBuffer. + * \param nSigBits Amount of significant bits of each nBufBits in sampleBuffer. + * + * \return 0: ok; -1: error + */ +INT WAV_OutputWrite(HANDLE_WAV wav, void *sampleBuffer, UINT numberOfSamples, int nBufBits, int nSigBits); + +/** + * \brief Close WAV output handle. + * \param pWav Pointer to WAV handle. *pWav is set to NULL. + * \return void + */ +void WAV_OutputClose(HANDLE_WAV *pWav); + +#ifdef __cplusplus +} +#endif + + +#endif /* __WAV_FILE_H__ */ |