mirror of https://github.com/mpv-player/mpv
244 lines
7.7 KiB
C
244 lines
7.7 KiB
C
/*
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** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
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** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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**
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** Any non-GPL usage of this software or parts of this software is strictly
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** forbidden.
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**
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** Commercial non-GPL licensing of this software is possible.
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** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
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**
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** Initially modified for use with MPlayer by Diego Biurrun on 2004/09/24
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** detailed CVS changelog at http://www.mplayerhq.hu/cgi-bin/cvsweb.cgi/main/
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**/
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#ifndef __NEAACDEC_H__
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#define __NEAACDEC_H__
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#if 1
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/* MACROS FOR BACKWARDS COMPATIBILITY */
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/* structs */
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#define faacDecHandle NeAACDecHandle
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#define faacDecConfiguration NeAACDecConfiguration
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#define faacDecConfigurationPtr NeAACDecConfigurationPtr
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#define faacDecFrameInfo NeAACDecFrameInfo
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/* functions */
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#define faacDecGetErrorMessage NeAACDecGetErrorMessage
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#define faacDecSetConfiguration NeAACDecSetConfiguration
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#define faacDecGetCurrentConfiguration NeAACDecGetCurrentConfiguration
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#define faacDecInit NeAACDecInit
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#define faacDecInit2 NeAACDecInit2
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#define faacDecInitDRM NeAACDecInitDRM
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#define faacDecPostSeekReset NeAACDecPostSeekReset
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#define faacDecOpen NeAACDecOpen
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#define faacDecClose NeAACDecClose
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#define faacDecDecode NeAACDecDecode
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#define AudioSpecificConfig NeAACDecAudioSpecificConfig
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#endif
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#ifdef _WIN32
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#pragma pack(push, 8)
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#ifndef NEAACDECAPI
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#define NEAACDECAPI __cdecl
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#endif
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#else
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#ifndef NEAACDECAPI
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#define NEAACDECAPI
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#endif
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#endif
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#define FAAD2_VERSION "2.1 beta"
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/* object types for AAC */
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#define MAIN 1
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#define LC 2
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#define SSR 3
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#define LTP 4
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#define HE_AAC 5
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#define ER_LC 17
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#define ER_LTP 19
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#define LD 23
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#define DRM_ER_LC 27 /* special object type for DRM */
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/* header types */
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#define RAW 0
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#define ADIF 1
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#define ADTS 2
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/* SBR signalling */
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#define NO_SBR 0
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#define SBR_UPSAMPLED 1
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#define SBR_DOWNSAMPLED 2
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#define NO_SBR_UPSAMPLED 3
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/* library output formats */
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#define FAAD_FMT_16BIT 1
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#define FAAD_FMT_24BIT 2
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#define FAAD_FMT_32BIT 3
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#define FAAD_FMT_FLOAT 4
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#define FAAD_FMT_FIXED FAAD_FMT_FLOAT
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#define FAAD_FMT_DOUBLE 5
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/* Capabilities */
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#define LC_DEC_CAP (1<<0) /* Can decode LC */
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#define MAIN_DEC_CAP (1<<1) /* Can decode MAIN */
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#define LTP_DEC_CAP (1<<2) /* Can decode LTP */
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#define LD_DEC_CAP (1<<3) /* Can decode LD */
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#define ERROR_RESILIENCE_CAP (1<<4) /* Can decode ER */
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#define FIXED_POINT_CAP (1<<5) /* Fixed point */
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/* Channel definitions */
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#define FRONT_CHANNEL_CENTER (1)
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#define FRONT_CHANNEL_LEFT (2)
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#define FRONT_CHANNEL_RIGHT (3)
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#define SIDE_CHANNEL_LEFT (4)
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#define SIDE_CHANNEL_RIGHT (5)
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#define BACK_CHANNEL_LEFT (6)
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#define BACK_CHANNEL_RIGHT (7)
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#define BACK_CHANNEL_CENTER (8)
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#define LFE_CHANNEL (9)
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#define UNKNOWN_CHANNEL (0)
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/* DRM channel definitions */
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#define DRMCH_MONO 1
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#define DRMCH_STEREO 2
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#define DRMCH_SBR_MONO 3
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#define DRMCH_SBR_STEREO 4
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#define DRMCH_SBR_PS_STEREO 5
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/* A decode call can eat up to FAAD_MIN_STREAMSIZE bytes per decoded channel,
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so at least so much bytes per channel should be available in this stream */
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#define FAAD_MIN_STREAMSIZE 768 /* 6144 bits/channel */
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typedef void *NeAACDecHandle;
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typedef struct mp4AudioSpecificConfig
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{
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/* Audio Specific Info */
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unsigned char objectTypeIndex;
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unsigned char samplingFrequencyIndex;
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unsigned long samplingFrequency;
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unsigned char channelsConfiguration;
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/* GA Specific Info */
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unsigned char frameLengthFlag;
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unsigned char dependsOnCoreCoder;
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unsigned short coreCoderDelay;
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unsigned char extensionFlag;
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unsigned char aacSectionDataResilienceFlag;
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unsigned char aacScalefactorDataResilienceFlag;
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unsigned char aacSpectralDataResilienceFlag;
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unsigned char epConfig;
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char sbr_present_flag;
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char forceUpSampling;
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char downSampledSBR;
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} mp4AudioSpecificConfig;
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typedef struct NeAACDecConfiguration
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{
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unsigned char defObjectType;
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unsigned long defSampleRate;
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unsigned char outputFormat;
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unsigned char downMatrix;
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unsigned char useOldADTSFormat;
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unsigned char dontUpSampleImplicitSBR;
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} NeAACDecConfiguration, *NeAACDecConfigurationPtr;
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typedef struct NeAACDecFrameInfo
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{
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unsigned long bytesconsumed;
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unsigned long samples;
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unsigned char channels;
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unsigned char error;
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unsigned long samplerate;
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/* SBR: 0: off, 1: on; upsample, 2: on; downsampled, 3: off; upsampled */
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unsigned char sbr;
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/* MPEG-4 ObjectType */
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unsigned char object_type;
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/* AAC header type; MP4 will be signalled as RAW also */
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unsigned char header_type;
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/* multichannel configuration */
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unsigned char num_front_channels;
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unsigned char num_side_channels;
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unsigned char num_back_channels;
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unsigned char num_lfe_channels;
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unsigned char channel_position[64];
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} NeAACDecFrameInfo;
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char* NEAACDECAPI NeAACDecGetErrorMessage(unsigned char errcode);
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unsigned long NEAACDECAPI NeAACDecGetCapabilities(void);
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NeAACDecHandle NEAACDECAPI NeAACDecOpen(void);
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NeAACDecConfigurationPtr NEAACDECAPI NeAACDecGetCurrentConfiguration(NeAACDecHandle hDecoder);
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unsigned char NEAACDECAPI NeAACDecSetConfiguration(NeAACDecHandle hDecoder,
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NeAACDecConfigurationPtr config);
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/* Init the library based on info from the AAC file (ADTS/ADIF) */
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long NEAACDECAPI NeAACDecInit(NeAACDecHandle hDecoder,
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unsigned char *buffer,
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unsigned long buffer_size,
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unsigned long *samplerate,
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unsigned char *channels);
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/* Init the library using a DecoderSpecificInfo */
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char NEAACDECAPI NeAACDecInit2(NeAACDecHandle hDecoder, unsigned char *pBuffer,
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unsigned long SizeOfDecoderSpecificInfo,
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unsigned long *samplerate, unsigned char *channels);
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/* Init the library for DRM */
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char NEAACDECAPI NeAACDecInitDRM(NeAACDecHandle *hDecoder, unsigned long samplerate,
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unsigned char channels);
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void NEAACDECAPI NeAACDecPostSeekReset(NeAACDecHandle hDecoder, long frame);
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void NEAACDECAPI NeAACDecClose(NeAACDecHandle hDecoder);
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void* NEAACDECAPI NeAACDecDecode(NeAACDecHandle hDecoder,
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NeAACDecFrameInfo *hInfo,
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unsigned char *buffer,
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unsigned long buffer_size);
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char NEAACDECAPI NeAACDecAudioSpecificConfig(unsigned char *pBuffer,
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unsigned long buffer_size,
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mp4AudioSpecificConfig *mp4ASC);
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#ifdef _WIN32
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#pragma pack(pop)
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#endif
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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