4f0d97057c
- Update disclaimer in all source files. - Increment library version in each FDK sub-module. Bug 9428126 Change-Id: I490b96d4ee472246b01483202b0bb4f1e9c2a5d7
225 lines
9.6 KiB
C
225 lines
9.6 KiB
C
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/* -----------------------------------------------------------------------------------------------------------
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Software License for The Fraunhofer FDK AAC Codec Library for Android
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© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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All rights reserved.
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1. INTRODUCTION
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The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
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the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
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This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
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AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
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audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
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independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
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of the MPEG specifications.
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Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
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may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
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individually for the purpose of encoding or decoding bit streams in products that are compliant with
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the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
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these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
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software may already be covered under those patent licenses when it is used for those licensed purposes only.
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Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
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are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
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applications information and documentation.
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2. COPYRIGHT LICENSE
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Redistribution and use in source and binary forms, with or without modification, are permitted without
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payment of copyright license fees provided that you satisfy the following conditions:
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You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
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your modifications thereto in source code form.
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You must retain the complete text of this software license in the documentation and/or other materials
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provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
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You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
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modifications thereto to recipients of copies in binary form.
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The name of Fraunhofer may not be used to endorse or promote products derived from this library without
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prior written permission.
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You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
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software or your modifications thereto.
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Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
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and the date of any change. For modified versions of the FDK AAC Codec, the term
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"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
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"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
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3. NO PATENT LICENSE
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NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
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ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
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respect to this software.
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You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
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by appropriate patent licenses.
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4. DISCLAIMER
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This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
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"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
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of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
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including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
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or business interruption, however caused and on any theory of liability, whether in contract, strict
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liability, or tort (including negligence), arising in any way out of the use of this software, even if
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advised of the possibility of such damage.
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5. CONTACT INFORMATION
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Fraunhofer Institute for Integrated Circuits IIS
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Attention: Audio and Multimedia Departments - FDK AAC LL
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Am Wolfsmantel 33
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91058 Erlangen, Germany
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www.iis.fraunhofer.de/amm
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amm-info@iis.fraunhofer.de
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----------------------------------------------------------------------------------------------------------- */
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/********************** Fraunhofer IIS FDK AAC Encoder lib ******************
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Author(s): V. Bacigalupo
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Description: Metadata Encoder library interface functions
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******************************************************************************/
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#ifndef _METADATA_MAIN_H
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#define _METADATA_MAIN_H
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/* Includes ******************************************************************/
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#include "aacenc_lib.h"
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#include "aacenc.h"
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/* Defines *******************************************************************/
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/* Data Types ****************************************************************/
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typedef enum {
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METADATA_OK = 0x0000, /*!< No error happened. All fine. */
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METADATA_INVALID_HANDLE = 0x0020, /*!< Handle passed to function call was invalid. */
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METADATA_MEMORY_ERROR = 0x0021, /*!< Memory allocation failed. */
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METADATA_INIT_ERROR = 0x0040, /*!< General initialization error. */
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METADATA_ENCODE_ERROR = 0x0060 /*!< The encoding process was interrupted by an unexpected error. */
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} FDK_METADATA_ERROR;
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/**
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* Meta Data handle.
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*/
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typedef struct FDK_METADATA_ENCODER *HANDLE_FDK_METADATA_ENCODER;
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/**
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* \brief Open a Meta Data instance.
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*
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* \param phMetadataEnc A pointer to a Meta Data handle to be allocated. Initialized on return.
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*
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* \return
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* - METADATA_OK, on succes.
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* - METADATA_INVALID_HANDLE, METADATA_MEMORY_ERROR, on failure.
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*/
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FDK_METADATA_ERROR FDK_MetadataEnc_Open(
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HANDLE_FDK_METADATA_ENCODER *phMetadataEnc
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);
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/**
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* \brief Initialize a Meta Data instance.
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*
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* \param hMetadataEnc Meta Data handle.
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* \param resetStates Indication for full reset of all states.
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* \param metadataMode Configures metat data output format (0,1,2).
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* \param audioDelay Delay cause by the audio encoder.
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* \param frameLength Number of samples to be processes within one frame.
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* \param sampleRate Sampling rat in Hz of audio input signal.
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* \param nChannels Number of audio input channels.
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* \param channelMode Channel configuration which is used by the encoder.
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* \param channelOrder Channel order of the input data. (WAV, MPEG)
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*
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* \return
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* - METADATA_OK, on succes.
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* - METADATA_INVALID_HANDLE, METADATA_INIT_ERROR, on failure.
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*/
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FDK_METADATA_ERROR FDK_MetadataEnc_Init(
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HANDLE_FDK_METADATA_ENCODER hMetadataEnc,
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const INT resetStates,
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const INT metadataMode,
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const INT audioDelay,
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const UINT frameLength,
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const UINT sampleRate,
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const UINT nChannels,
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const CHANNEL_MODE channelMode,
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const CHANNEL_ORDER channelOrder
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);
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/**
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* \brief Calculate Meta Data processing.
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*
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* This function treats all step necessary for meta data processing.
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* - Receive new meta data and make usable.
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* - Calculate DRC compressor and extract meta data info.
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* - Make meta data available for extern use.
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* - Apply audio data and meta data delay compensation.
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*
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* \param hMetadataEnc Meta Data handle.
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* \param pAudioSamples Pointer to audio input data. Existing function overwrites audio data with delayed audio samples.
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* \param nAudioSamples Number of input audio samples to be prcessed.
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* \param pMetadata Pointer to Metat Data input.
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* \param ppMetaDataExtPayload Pointer to extension payload array. Filled on return.
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* \param nMetaDataExtensions Pointer to variable to describe number of available extension payloads. Filled on return.
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* \param matrix_mixdown_idx Pointer to variable for matrix mixdown coefficient. Filled on return.
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*
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* \return
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* - METADATA_OK, on succes.
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* - METADATA_INVALID_HANDLE, METADATA_ENCODE_ERROR, on failure.
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*/
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FDK_METADATA_ERROR FDK_MetadataEnc_Process(
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HANDLE_FDK_METADATA_ENCODER hMetadataEnc,
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INT_PCM * const pAudioSamples,
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const INT nAudioSamples,
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const AACENC_MetaData * const pMetadata,
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AACENC_EXT_PAYLOAD ** ppMetaDataExtPayload,
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UINT * nMetaDataExtensions,
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INT * matrix_mixdown_idx
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);
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/**
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* \brief Close the Meta Data instance.
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*
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* Deallocate instance and free whole memory.
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*
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* \param phMetaData Pointer to the Meta Data handle to be deallocated.
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*
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* \return
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* - METADATA_OK, on succes.
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* - METADATA_INVALID_HANDLE, on failure.
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*/
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FDK_METADATA_ERROR FDK_MetadataEnc_Close(
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HANDLE_FDK_METADATA_ENCODER *phMetaData
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);
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/**
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* \brief Get Meta Data Encoder delay.
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*
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* \param hMetadataEnc Meta Data Encoder handle.
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*
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* \return Delay caused by Meta Data module.
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*/
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INT FDK_MetadataEnc_GetDelay(
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HANDLE_FDK_METADATA_ENCODER hMetadataEnc
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);
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#endif /* _METADATA_MAIN_H */
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