diff options
Diffstat (limited to 'libSACenc/include')
| -rw-r--r-- | libSACenc/include/sacenc_lib.h | 405 |
1 files changed, 405 insertions, 0 deletions
diff --git a/libSACenc/include/sacenc_lib.h b/libSACenc/include/sacenc_lib.h new file mode 100644 index 0000000..758cc0f --- /dev/null +++ b/libSACenc/include/sacenc_lib.h @@ -0,0 +1,405 @@ +/* ----------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2018 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 surround encoder library ************************* + + Author(s): Max Neuendorf + + Description: Encoder Library Interface + Encoder API + +*******************************************************************************/ + +/**************************************************************************/ /** + \file + ******************************************************************************/ + +#ifndef SACENC_LIB_H +#define SACENC_LIB_H + +/* Includes ******************************************************************/ +#include "machine_type.h" +#include "FDK_audio.h" + +#ifdef __cplusplus +extern "C" { +#endif +/* Defines *******************************************************************/ + +/* Data Types ****************************************************************/ + +/** + * Space encoder error codes. + */ +typedef enum { + SACENC_OK = 0x00000000, /*!< No error happened. All fine. */ + SACENC_INVALID_HANDLE = + 0x00000080, /*!< Handle passed to function call was invalid. */ + SACENC_MEMORY_ERROR = 0x00000800, /*!< Memory allocation failed. */ + SACENC_INIT_ERROR = 0x00008000, /*!< General initialization error. */ + SACENC_ENCODE_ERROR = + 0x00080000, /*!< The encoding process was interrupted by an unexpected + error. */ + SACENC_PARAM_ERROR = 0x00800000, /*!< Invalid runtime parameter. */ + SACENC_UNSUPPORTED_PARAMETER = 0x00800001, /*!< Parameter not available. */ + SACENC_INVALID_CONFIG = 0x00800002, /*!< Configuration not provided. */ + SACENC_UNKNOWN_ERROR = 0x08000000 /*!< Unknown error. */ + +} FDK_SACENC_ERROR; + +typedef enum { + SACENC_INVALID_MODE = 0, + SACENC_212 = 8, + SACENC_ESCAPE = 15 + +} MP4SPACEENC_MODE; + +typedef enum { + SACENC_BANDS_INVALID = 0, + SACENC_BANDS_4 = 4, + SACENC_BANDS_5 = 5, + SACENC_BANDS_7 = 7, + SACENC_BANDS_9 = 9, + SACENC_BANDS_12 = 12, + SACENC_BANDS_15 = 15, + SACENC_BANDS_23 = 23 + +} MP4SPACEENC_BANDS_CONFIG; + +typedef enum { + SACENC_QUANTMODE_INVALID = -1, + SACENC_QUANTMODE_FINE = 0, + SACENC_QUANTMODE_EBQ1 = 1, + SACENC_QUANTMODE_EBQ2 = 2, + SACENC_QUANTMODE_RSVD3 = 3 + +} MP4SPACEENC_QUANTMODE; + +typedef enum { + SACENC_DMXGAIN_INVALID = -1, + SACENC_DMXGAIN_0_dB = 0, + SACENC_DMXGAIN_1_5_dB = 1, + SACENC_DMXGAIN_3_dB = 2, + SACENC_DMXGAIN_4_5_dB = 3, + SACENC_DMXGAIN_6_dB = 4, + SACENC_DMXGAIN_7_5_dB = 5, + SACENC_DMXGAIN_9_dB = 6, + SACENC_DMXGAIN_12_dB = 7 + +} MP4SPACEENC_DMX_GAIN; + +/** + * \brief Space Encoder setting parameters. + * + * Use FDK_sacenc_setParam() function to configure the internal status of the + * following parameters. + */ +typedef enum { + SACENC_LOWDELAY, /*!< Configure lowdelay MPEG Surround. + - 0: Disable Lowdelay. (default) + - 1: Enable Lowdelay. + - 2: Enable Lowdelay including keep frame. */ + + SACENC_ENC_MODE, /*!< Configure encoder tree mode. See ::MP4SPACEENC_MODE for + available values. */ + + SACENC_SAMPLERATE, /*!< Configure encoder sampling rate. */ + + SACENC_FRAME_TIME_SLOTS, /*!< Configure number of slots per spatial frame. */ + + SACENC_PARAM_BANDS, /*!< Configure number of parameter bands. See + ::MP4SPACEENC_BANDS_CONFIG for available values. */ + + SACENC_TIME_DOM_DMX, /*!< Configure time domain downmix. + - 0: No time domain downmix. (default) + - 1: Static time domain downmix. + - 2: Enhanced time domain downmix, stereo to mono + only. */ + + SACENC_DMX_GAIN, /*!< Configure downmix gain. See ::MP4SPACEENC_DMX_GAIN for + available values. */ + + SACENC_COARSE_QUANT, /*!< Use coarse parameter quantization. + - 0: No (default) + - 1: Yes */ + + SACENC_QUANT_MODE, /*!< Configure quanitzation mode. See + ::MP4SPACEENC_QUANTMODE for available values. */ + + SACENC_TIME_ALIGNMENT, /*!< Configure time alignment in samples. */ + + SACENC_INDEPENDENCY_COUNT, /*!< Configure the independency count. (count == 0 + means independencyFlag == 1) */ + + SACENC_INDEPENDENCY_FACTOR, /*!< How often should we set the independency flag + */ + + SACENC_NONE /*!< ------ */ + +} SPACEENC_PARAM; + +/** + * Describes Spatial Specific Config. + */ +typedef struct { + INT nSscSizeBits; /*!< Number of valid bits in pSsc buffer. */ + UCHAR *pSsc; /*!< SpatialSpecificConfig buffer in binary format. */ + +} MPEG4SPACEENC_SSCBUF; + +/** + * Provides some info about the encoder configuration. + */ +typedef struct { + INT nSampleRate; /*!< Configured sampling rate.*/ + INT nSamplesFrame; /*!< Frame length in samples. */ + INT nTotalInputChannels; /*!< Number of expected audio input channels. */ + INT nDmxDelay; /*!< Delay of the downmixed signal. */ + INT nCodecDelay; /*!< Delay of the whole en-/decoded signal, including + core-coder delay. */ + INT nDecoderDelay; /*!< Delay added by the MP4SPACE decoder. */ + INT nPayloadDelay; /*!< Delay of the payload. */ + INT nDiscardOutFrames; /*!< Number of dmx frames to discard for alignment with + bitstream. */ + + MPEG4SPACEENC_SSCBUF + *pSscBuf; /*!< Pointer to Spatial Specific Config structure. */ + +} MP4SPACEENC_INFO; + +/** + * MPEG Surround encoder handle. + */ +typedef struct MP4SPACE_ENCODER *HANDLE_MP4SPACE_ENCODER; + +/** + * Defines the input arguments for a FDK_sacenc_encode() call. + */ +typedef struct { + INT nInputSamples; /*!< Number of valid input audio samples (multiple of input + channels). */ + UINT inputBufferSizePerChannel; /*!< Size of input buffer (input audio + samples) per channel. */ + UINT isInputInterleaved; /*!< Indicates if input audio samples are represented + in blocks or interleaved: + - 0 : in blocks. + - 1 : interleaved. */ + +} SACENC_InArgs; + +/** + * Defines the output arguments for a FDK_sacenc_encode() call. + */ +typedef struct { + INT nOutputBits; /*!< Number of valid payload bits generated during + FDK_sacenc_encode(). */ + INT nOutputSamples; /*!< Number of valid output audio samples generated during + FDK_sacenc_encode(). */ + UINT nSamplesConsumed; /*!< Number of input audio samples consumed in + FDK_sacenc_encode(). */ + +} SACENC_OutArgs; + +/* Constants *****************************************************************/ + +/* Function / Class Declarations *********************************************/ + +/** + * \brief Opens a new instace of the MPEG Surround encoder. + * + * \param phMp4SpaceEnc Pointer to the encoder handle to be deallocated. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, SACENC_MEMORY_ERROR, on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_open(HANDLE_MP4SPACE_ENCODER *phMp4SpaceEnc); + +/** + * \brief Finalizes opening process of MPEG Surround encoder. + * + * Shows, how many samples are needed as input + * + * \param hMp4SpaceEnc A valid MPEG Surround encoder handle. + * \param dmxDelay Downmix delay. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, SACENC_INIT_ERROR, SACENC_INVALID_CONFIG, + * on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_init(HANDLE_MP4SPACE_ENCODER hMp4SpaceEnc, + const INT dmxDelay); + +/** + * \brief Close the MPEG Surround encoder instance. + * + * Deallocate encoder instance and free whole memory. + * + * \param phMp4SpaceEnc Pointer to the encoder handle to be deallocated. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_close(HANDLE_MP4SPACE_ENCODER *phMp4SpaceEnc); + +/** + * \brief MPEG surround parameter extraction, framwise. + * + * \param hMp4SpaceEnc A valid MPEG Surround encoder handle. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_encode(const HANDLE_MP4SPACE_ENCODER hMp4SpaceEnc, + const FDK_bufDescr *inBufDesc, + const FDK_bufDescr *outBufDesc, + const SACENC_InArgs *inargs, + SACENC_OutArgs *outargs); + +/** + * \brief Provides information on produced bitstream. + * + * \param hMp4SpaceEnc A valid MPEG Surround encoder handle. + * \param pInfo Pointer to an encoder info struct, filled on + * return. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_getInfo(const HANDLE_MP4SPACE_ENCODER hMp4SpaceEnc, + MP4SPACEENC_INFO *const pInfo); + +/** + * \brief Set one single MPEG Surround encoder parameter. + * + * This function allows configuration of all encoder parameters specified in + * ::SPACEENC_PARAM. Each parameter must be set with a separate function call. + * An internal validation of the configuration value range will be done. + * + * \param hMp4SpaceEnc A valid MPEG Surround encoder handle. + * \param param Parameter to be set. See ::SPACEENC_PARAM. + * \param value Parameter value. See parameter description in + * ::SPACEENC_PARAM. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, SACENC_UNSUPPORTED_PARAMETER, + * SACENC_INVALID_CONFIG, on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_setParam(HANDLE_MP4SPACE_ENCODER hMp4SpaceEnc, + const SPACEENC_PARAM param, + const UINT value); + +/** + * \brief Get information about MPEG Surround encoder library build. + * + * Fill a given LIB_INFO structure with library version information. + * + * \param info Pointer to an allocated LIB_INFO struct. + * + * \return + * - SACENC_OK, on success. + * - SACENC_INVALID_HANDLE, SACENC_INIT_ERROR, on failure. + */ +FDK_SACENC_ERROR FDK_sacenc_getLibInfo(LIB_INFO *info); + +#ifdef __cplusplus +} +#endif + +#endif /* SACENC_LIB_H */ |