blob: f73020913075c831c064e5551a552f2f8651510e
| 1 | /* ***** BEGIN LICENSE BLOCK ***** |
| 2 | * Source last modified: $Id: aacdec.h,v 1.8 2005/11/10 00:15:08 margotm Exp $ |
| 3 | * |
| 4 | * Portions Copyright (c) 1995-2005 RealNetworks, Inc. All Rights Reserved. |
| 5 | * |
| 6 | * The contents of this file, and the files included with this file, |
| 7 | * are subject to the current version of the RealNetworks Public |
| 8 | * Source License (the "RPSL") available at |
| 9 | * http://www.helixcommunity.org/content/rpsl unless you have licensed |
| 10 | * the file under the current version of the RealNetworks Community |
| 11 | * Source License (the "RCSL") available at |
| 12 | * http://www.helixcommunity.org/content/rcsl, in which case the RCSL |
| 13 | * will apply. You may also obtain the license terms directly from |
| 14 | * RealNetworks. You may not use this file except in compliance with |
| 15 | * the RPSL or, if you have a valid RCSL with RealNetworks applicable |
| 16 | * to this file, the RCSL. Please see the applicable RPSL or RCSL for |
| 17 | * the rights, obligations and limitations governing use of the |
| 18 | * contents of the file. |
| 19 | * |
| 20 | * This file is part of the Helix DNA Technology. RealNetworks is the |
| 21 | * developer of the Original Code and owns the copyrights in the |
| 22 | * portions it created. |
| 23 | * |
| 24 | * This file, and the files included with this file, is distributed |
| 25 | * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY |
| 26 | * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS |
| 27 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES |
| 28 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET |
| 29 | * ENJOYMENT OR NON-INFRINGEMENT. |
| 30 | * |
| 31 | * Technology Compatibility Kit Test Suite(s) Location: |
| 32 | * http://www.helixcommunity.org/content/tck |
| 33 | * |
| 34 | * Contributor(s): |
| 35 | * |
| 36 | * ***** END LICENSE BLOCK ***** */ |
| 37 | |
| 38 | /************************************************************************************** |
| 39 | * Fixed-point HE-AAC decoder |
| 40 | * Jon Recker (jrecker@real.com) |
| 41 | * February 2005 |
| 42 | * |
| 43 | * aacdec.h - public C API for AAC decoder |
| 44 | **************************************************************************************/ |
| 45 | |
| 46 | #ifndef _AACDEC_H |
| 47 | #define _AACDEC_H |
| 48 | |
| 49 | #define _ARC32 |
| 50 | |
| 51 | #if defined(_WIN32) && !defined(_WIN32_WCE) |
| 52 | # |
| 53 | #elif defined(_WIN32) && defined(_WIN32_WCE) && defined(ARM) |
| 54 | # |
| 55 | #elif defined(_WIN32) && defined(WINCE_EMULATOR) |
| 56 | # |
| 57 | #elif defined (__arm) && defined (__ARMCC_VERSION) |
| 58 | # |
| 59 | #elif defined(_SYMBIAN) && defined(__WINS__) |
| 60 | # |
| 61 | #elif defined(__GNUC__) && defined(__arm__) |
| 62 | # |
| 63 | #elif defined(__GNUC__) && defined(__i386__) |
| 64 | # |
| 65 | #elif defined(__GNUC__) && defined(__amd64__) |
| 66 | # |
| 67 | #elif defined(__GNUC__) && (defined(__powerpc__) || defined(__POWERPC__)) |
| 68 | # |
| 69 | #elif defined(_OPENWAVE_SIMULATOR) || defined(_OPENWAVE_ARMULATOR) |
| 70 | # |
| 71 | #elif defined(_SOLARIS) && !defined(__GNUC__) |
| 72 | # |
| 73 | #elif defined(_ARC32) |
| 74 | #define __inline _Inline_ |
| 75 | #else |
| 76 | #error No platform defined. See valid options in aacdec.h |
| 77 | #endif |
| 78 | |
| 79 | #ifdef __cplusplus |
| 80 | extern "C" { |
| 81 | #endif |
| 82 | |
| 83 | /* according to spec (13818-7 section 8.2.2, 14496-3 section 4.5.3) |
| 84 | * max size of input buffer = |
| 85 | * 6144 bits = 768 bytes per SCE or CCE-I |
| 86 | * 12288 bits = 1536 bytes per CPE |
| 87 | * 0 bits = 0 bytes per CCE-D (uses bits from the SCE/CPE/CCE-I it is coupled to) |
| 88 | */ |
| 89 | #ifndef AAC_MAX_NCHANS /* if max channels isn't set in makefile, */ |
| 90 | #define AAC_MAX_NCHANS 2 /* set to default max number of channels */ |
| 91 | #endif |
| 92 | #define AAC_MAX_NSAMPS 1024 |
| 93 | #define AAC_MAINBUF_SIZE (768 * AAC_MAX_NCHANS) |
| 94 | |
| 95 | #define AAC_NUM_PROFILES 3 |
| 96 | #define AAC_PROFILE_MP 0 |
| 97 | #define AAC_PROFILE_LC 1 |
| 98 | #define AAC_PROFILE_SSR 2 |
| 99 | |
| 100 | #define AAC_INPUTBUF_SIZE (2 * AAC_MAINBUF_SIZE * AAC_MAX_NCHANS) /* pick something big enough to hold a bunch of frames */ |
| 101 | |
| 102 | /* define these to enable decoder features */ |
| 103 | #ifdef __ARC600__ |
| 104 | #define HELIX_FEATURE_AUDIO_CODEC_AAC_SBR |
| 105 | #endif /* __ARC600__ */ |
| 106 | #if defined(HELIX_FEATURE_AUDIO_CODEC_AAC_SBR) |
| 107 | #define AAC_ENABLE_SBR |
| 108 | #endif // HELIX_FEATURE_AUDIO_CODEC_AAC_SBR. |
| 109 | #define AAC_ENABLE_MPEG4 |
| 110 | |
| 111 | #ifdef AAC_ENABLE_SBR |
| 112 | #define SBR_MUL 2 |
| 113 | #else |
| 114 | #define SBR_MUL 1 |
| 115 | #endif |
| 116 | |
| 117 | enum { |
| 118 | ERR_AAC_NONE = 0, |
| 119 | ERR_AAC_INDATA_UNDERFLOW = -1, |
| 120 | ERR_AAC_NULL_POINTER = -2, |
| 121 | ERR_AAC_INVALID_ADTS_HEADER = -3, |
| 122 | ERR_AAC_INVALID_ADIF_HEADER = -4, |
| 123 | ERR_AAC_INVALID_FRAME = -5, |
| 124 | ERR_AAC_MPEG4_UNSUPPORTED = -6, |
| 125 | ERR_AAC_CHANNEL_MAP = -7, |
| 126 | ERR_AAC_SYNTAX_ELEMENT = -8, |
| 127 | |
| 128 | ERR_AAC_DEQUANT = -9, |
| 129 | ERR_AAC_STEREO_PROCESS = -10, |
| 130 | ERR_AAC_PNS = -11, |
| 131 | ERR_AAC_SHORT_BLOCK_DEINT = -12, |
| 132 | ERR_AAC_TNS = -13, |
| 133 | ERR_AAC_IMDCT = -14, |
| 134 | ERR_AAC_NCHANS_TOO_HIGH = -15, |
| 135 | |
| 136 | ERR_AAC_SBR_INIT = -16, |
| 137 | ERR_AAC_SBR_BITSTREAM = -17, |
| 138 | ERR_AAC_SBR_DATA = -18, |
| 139 | ERR_AAC_SBR_PCM_FORMAT = -19, |
| 140 | ERR_AAC_SBR_NCHANS_TOO_HIGH = -20, |
| 141 | ERR_AAC_SBR_SINGLERATE_UNSUPPORTED = -21, |
| 142 | |
| 143 | ERR_AAC_RAWBLOCK_PARAMS = -22, |
| 144 | |
| 145 | ERR_UNKNOWN = -9999 |
| 146 | }; |
| 147 | |
| 148 | typedef struct _AACIOBuf { |
| 149 | int bytesLeft; |
| 150 | unsigned char *readPtr; |
| 151 | unsigned char readBuf[AAC_INPUTBUF_SIZE]; |
| 152 | short outBuf[AAC_MAX_NCHANS * AAC_MAX_NSAMPS * SBR_MUL]; |
| 153 | } AACIOBuf; |
| 154 | |
| 155 | typedef struct _AACFrameInfo { // should keep same as _audio_codec_config_aacdec_t in audio_codec_aac.h |
| 156 | int bitRate; |
| 157 | int nChans; |
| 158 | int sampRateCore; |
| 159 | int sampRateOut; |
| 160 | int bitsPerSample; |
| 161 | int outputSamps; |
| 162 | int profile; |
| 163 | int tnsUsed; |
| 164 | int pnsUsed; |
| 165 | int format; |
| 166 | unsigned total_byte_parsed; |
| 167 | unsigned total_sample_decoded; |
| 168 | unsigned audio_send_by_frame; |
| 169 | //#ifndef PRE_APOLLO |
| 170 | unsigned char *extra_data; |
| 171 | unsigned extradata_len; |
| 172 | //#endif |
| 173 | } AACFrameInfo; |
| 174 | |
| 175 | typedef void *HAACDecoder; |
| 176 | typedef void *HAACIOBuf; |
| 177 | |
| 178 | /* public C API */ |
| 179 | HAACDecoder AACInitDecoder(int); |
| 180 | void AACFreeDecoder(HAACDecoder hAACDecoder); |
| 181 | int AACDecode(HAACDecoder hAACDecoder, unsigned char **inbuf, int *bytesLeft, short *outbuf); |
| 182 | |
| 183 | int AACFindSyncWord(unsigned char *buf, int nBytes); |
| 184 | void AACGetLastFrameInfo(HAACDecoder hAACDecoder, AACFrameInfo *aacFrameInfo); |
| 185 | void AACGetDecoderInfo(HAACDecoder hAACDecoder, AACFrameInfo *aacFrameInfo); |
| 186 | int AACSetRawBlockParams(HAACDecoder hAACDecoder, int copyLast, AACFrameInfo *aacFrameInfo); |
| 187 | int AACFlushCodec(HAACDecoder hAACDecoder); |
| 188 | |
| 189 | #ifdef HELIX_CONFIG_AAC_GENERATE_TRIGTABS_FLOAT |
| 190 | int AACInitTrigtabsFloat(void); |
| 191 | void AACFreeTrigtabsFloat(void); |
| 192 | #endif |
| 193 | |
| 194 | extern int AACDataSource; |
| 195 | |
| 196 | #ifdef __cplusplus |
| 197 | } |
| 198 | #endif |
| 199 | |
| 200 | #endif /* _AACDEC_H */ |
| 201 |