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diff --git a/libPCMutils/include/pcmutils_lib.h b/libPCMutils/include/pcmutils_lib.h new file mode 100644 index 0000000..fd4a26d --- /dev/null +++ b/libPCMutils/include/pcmutils_lib.h @@ -0,0 +1,282 @@ + +/* ----------------------------------------------------------------------------------------------------------- +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 +----------------------------------------------------------------------------------------------------------- */ + +/************************ FDK PCM up/downmixing module ********************* + + Author(s): Christian Griebel + Description: Declares functions to interface with the PCM downmix processing + module. + +*******************************************************************************/ + +#ifndef _PCMUTILS_LIB_H_ +#define _PCMUTILS_LIB_H_ + +#include "machine_type.h" +#include "common_fix.h" +#include "FDK_audio.h" + +/* ------------------------ * + * MODULE SETTINGS: * + * ------------------------ */ +/* #define PCM_UPMIX_ENABLE */ /*!< Generally enable up mixing. */ +#define PCM_DOWNMIX_ENABLE /*!< Generally enable down mixing. */ +#define DVB_MIXDOWN_ENABLE /*!< Enable this to support DVB ancillary data for encoder + assisted downmixing of MPEG-4 AAC and + MPEG-1/2 layer 2 streams. PCM_DOWNMIX_ENABLE has to + be enabled, too! */ +#define MPEG_PCE_MIXDOWN_ENABLE /*!< Enable this to support MPEG matrix mixdown with a + coefficient carried in the PCE. PCM_DOWNMIX_ENABLE + has to be enabled, too! */ +/* #define ARIB_MIXDOWN_ENABLE */ /*!< Enable modifications to the MPEG PCE mixdown method + to fulfill ARIB standard. MPEG_PCE_MIXDOWN_ENABLE has + to be set. */ + +/* ------------------------ * + * ERROR CODES: * + * ------------------------ */ +typedef enum +{ + PCMDMX_OK = 0x0, /*!< No error happened. */ + PCMDMX_OUT_OF_MEMORY = 0x2, /*!< Not enough memory to set up an instance of the module. */ + PCMDMX_UNKNOWN = 0x5, /*!< Error condition is of unknown reason, or from a third + party module. */ + PCMDMX_INVALID_HANDLE, /*!< The given instance handle is not valid. */ + PCMDMX_INVALID_ARGUMENT, /*!< One of the parameters handed over is invalid. */ + PCMDMX_INVALID_CH_CONFIG, /*!< The given channel configuration is not supported and + thus no processing was performed. */ + PCMDMX_INVALID_MODE, /*!< The set configuration/mode is not applicable. */ + PCMDMX_UNKNOWN_PARAM, /*!< The handed parameter is not known/supported. */ + PCMDMX_UNABLE_TO_SET_PARAM, /*!< Unable to set the specific parameter. Most probably + the value ist out of range. */ + PCMDMX_CORRUPT_ANC_DATA /*!< The read ancillary data was corrupt. */ + +} PCMDMX_ERROR; + + +/* ------------------------ * + * RUNTIME PARAMS: * + * ------------------------ */ +typedef enum +{ + DMX_BS_DATA_EXPIRY_FRAME, /*!< The number of frames without new metadata that have to + go by before the bitstream data expires. The value 0 + disables expiry. */ + DMX_BS_DATA_DELAY, /*!< The number of delay frames of the output samples + compared to the bitstream data. */ + NUMBER_OF_OUTPUT_CHANNELS , /*!< The number of output channels (equals the number of + channels processed by the audio output setup). */ + DUAL_CHANNEL_DOWNMIX_MODE /*!< Downmix mode for two channel audio data. */ + +} PCMDMX_PARAM; + + +typedef enum +{ + STEREO_MODE = 0x0, /*!< Leave stereo signals as they are. */ + CH1_MODE = 0x1, /*!< Create a dual mono output signal from channel 1. */ + CH2_MODE = 0x2, /*!< Create a dual mono output signal from channel 2. */ + MIXED_MODE = 0x3 /*!< Create a dual mono output signal by mixing the two channels. */ + +} DUAL_CHANNEL_MODE; + + +/* ------------------------ * + * MODULES INTERFACE: * + * ------------------------ */ +typedef struct PCM_DMX_INSTANCE *HANDLE_PCM_DOWNMIX; + +/* Modules reset flags */ +#define PCMDMX_RESET_PARAMS ( 1 ) +#define PCMDMX_RESET_BS_DATA ( 2 ) +#define PCMDMX_RESET_FULL ( PCMDMX_RESET_PARAMS | PCMDMX_RESET_BS_DATA ) + +#ifdef __cplusplus +extern "C" +{ +#endif + +/** Open and initialize an instance of the PCM downmix module + * @param [out] Pointer to a buffer receiving the handle of the new instance. + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_Open ( + HANDLE_PCM_DOWNMIX *pSelf + ); + +/** Set one parameter for one instance of the PCM downmix module. + * @param [in] Handle of PCM downmix instance. + * @param [in] Parameter to be set. + * @param [in] Parameter value. + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_SetParam ( + HANDLE_PCM_DOWNMIX self, + PCMDMX_PARAM param, + UINT value + ); + +/** Read the ancillary data transported in DSEs of DVB streams with MPEG-4 content + * @param [in] Handle of PCM downmix instance. + * @param [in] Pointer to ancillary data buffer. + * @param [in] Size of ancillary data. + * @param [in] Flag indicating wheter the ancillary data is from a MPEG-1/2 or an MPEG-4 stream. + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_ReadDvbAncData ( + HANDLE_PCM_DOWNMIX self, + UCHAR *pAncDataBuf, + UINT ancDataBytes, + int isMpeg2 + ); + +/** Set the matrix mixdown information extracted from the PCE of an AAC bitstream. + * Note: Call only if matrix_mixdown_idx_present is true. + * @param [in] Handle of PCM downmix instance. + * @param [in] Matrix mixdown index present flag extracted from PCE. + * @param [in] The 2 bit matrix mixdown index extracted from PCE. + * @param [in] The pseudo surround enable flag extracted from PCE. + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_SetMatrixMixdownFromPce ( + HANDLE_PCM_DOWNMIX self, + int matrixMixdownPresent, + int matrixMixdownIdx, + int pseudoSurroundEnable + ); + +/** Reset the module. + * @param [in] Handle of PCM downmix instance. + * @param [in] Flags telling which parts of the module shall be reset. + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_Reset ( + HANDLE_PCM_DOWNMIX self, + UINT flags + ); + +/** Apply down or up mixing. + * + * \param [in] Handle of PCM downmix module instance. + * \param [inout] Pointer to time buffer with decoded PCM samples. + * \param [in] Pointer where the amount of output samples is returned into. + * \param [inout] Pointer where the amount of output channels is returned into. + * \param [in] Flag which indicates if output time data are writtern interleaved or as subsequent blocks. + * \param [inout] Array were the corresponding channel type for each output audio channel is stored into. + * \param [inout] Array were the corresponding channel type index for each output audio channel is stored into. + * \param [in] Array containing the output channel mapping to be used (From MPEG PCE ordering to whatever is required). + * + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_ApplyFrame ( + HANDLE_PCM_DOWNMIX self, + INT_PCM *pPcmBuf, + UINT frameSize, + INT *nChannels, + + int fInterleaved, + AUDIO_CHANNEL_TYPE channelType[], + UCHAR channelIndices[], + const UCHAR channelMapping[][8] + ); + +/** Close an instance of the PCM downmix module. + * @param [inout] Pointer to a buffer containing the handle of the instance. + * @returns Returns an error code. + **/ +PCMDMX_ERROR pcmDmx_Close ( + HANDLE_PCM_DOWNMIX *pSelf + ); + +/** Get library info for this module. + * @param [out] Pointer to an allocated LIB_INFO structure. + * @returns Returns an error code. + */ +PCMDMX_ERROR pcmDmx_GetLibInfo( LIB_INFO *info ); + + +#ifdef __cplusplus +} +#endif + +#endif /* _PCMUTILS_LIB_H_ */ |