1 /****************************************************************************** 2 * 3 * Copyright (C) 2014 The Android Open Source Project 4 * Copyright 2003 - 2004 Open Interface North America, Inc. All rights 5 * reserved. 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at: 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 * 19 ******************************************************************************/ 20 #ifndef _OI_CODEC_SBC_PRIVATE_H 21 #define _OI_CODEC_SBC_PRIVATE_H 22 23 /******************************************************************************* 24 $Revision: #1 $ 25 ******************************************************************************/ 26 27 /** 28 @file 29 Function prototypes and macro definitions used internally by the codec. 30 31 @ingroup codec_internal 32 */ 33 34 /** 35 @addtogroup codec_internal 36 @{ 37 */ 38 39 #ifdef USE_RESTRICT_KEYWORD 40 #define RESTRICT restrict 41 #else 42 #define RESTRICT 43 #endif 44 45 #ifdef CODEC_DEBUG 46 #include <stdio.h> 47 #define ERROR(x) \ 48 do { \ 49 printf x; \ 50 printf("\n"); \ 51 } while (0) 52 #else 53 #define ERROR(x) 54 #endif 55 56 #ifdef TRACE_EXECUTION 57 #define TRACE(x) \ 58 do { \ 59 printf x; \ 60 printf("\n"); \ 61 } while (0) 62 #else 63 #define TRACE(x) 64 #endif 65 66 #ifndef PRIVATE 67 #define PRIVATE 68 #endif 69 70 #ifndef INLINE 71 #define INLINE 72 #endif 73 74 #include "oi_assert.h" 75 #include "oi_codec_sbc.h" 76 77 #ifndef OI_SBC_SYNCWORD 78 #define OI_SBC_SYNCWORD 0x9c 79 #endif 80 81 #ifndef DIVIDE 82 #define DIVIDE(a, b) ((a) / (b)) 83 #endif 84 85 typedef union { 86 uint8_t uint8[SBC_MAX_BANDS]; 87 uint32_t uint32[SBC_MAX_BANDS / 4]; 88 } BITNEED_UNION1; 89 90 typedef union { 91 uint8_t uint8[2 * SBC_MAX_BANDS]; 92 uint32_t uint32[2 * SBC_MAX_BANDS / 4]; 93 } BITNEED_UNION2; 94 95 static const uint16_t freq_values[] = {16000, 32000, 44100, 48000}; 96 static const uint8_t block_values[] = {4, 8, 12, 16}; 97 static const uint8_t channel_values[] = {1, 2, 2, 2}; 98 static const uint8_t band_values[] = {4, 8}; 99 100 #define TEST_MODE_SENTINEL "OINA" 101 #define TEST_MODE_SENTINEL_LENGTH 4 102 103 /** Used internally. */ 104 typedef struct { 105 union { 106 const uint8_t* r; 107 uint8_t* w; 108 } ptr; 109 uint32_t value; 110 OI_UINT bitPtr; 111 } OI_BITSTREAM; 112 113 #define VALID_INT16(x) (((x) >= OI_INT16_MIN) && ((x) <= OI_INT16_MAX)) 114 #define VALID_INT32(x) (((x) >= OI_INT32_MIN) && ((x) <= OI_INT32_MAX)) 115 116 #define DCTII_8_SHIFT_IN 0 117 #define DCTII_8_SHIFT_OUT (16 - DCTII_8_SHIFT_IN) 118 119 #define DCTII_8_SHIFT_0 (DCTII_8_SHIFT_OUT) 120 #define DCTII_8_SHIFT_1 (DCTII_8_SHIFT_OUT) 121 #define DCTII_8_SHIFT_2 (DCTII_8_SHIFT_OUT) 122 #define DCTII_8_SHIFT_3 (DCTII_8_SHIFT_OUT) 123 #define DCTII_8_SHIFT_4 (DCTII_8_SHIFT_OUT) 124 #define DCTII_8_SHIFT_5 (DCTII_8_SHIFT_OUT) 125 #define DCTII_8_SHIFT_6 (DCTII_8_SHIFT_OUT - 1) 126 #define DCTII_8_SHIFT_7 (DCTII_8_SHIFT_OUT - 2) 127 128 #define DCT_SHIFT 15 129 130 #define DCTIII_4_SHIFT_IN 2 131 #define DCTIII_4_SHIFT_OUT 15 132 133 #define DCTIII_8_SHIFT_IN 3 134 #define DCTIII_8_SHIFT_OUT 14 135 136 OI_UINT computeBitneed(OI_CODEC_SBC_COMMON_CONTEXT* common, uint8_t* bitneeds, 137 OI_UINT ch, OI_UINT* preferredBitpool); 138 139 void oneChannelBitAllocation(OI_CODEC_SBC_COMMON_CONTEXT* common, 140 BITNEED_UNION1* bitneeds, OI_UINT ch, 141 OI_UINT bitcount); 142 143 OI_INT adjustToFitBitpool(const OI_UINT bitpool, uint32_t* bitneeds, 144 const OI_UINT subbands, OI_UINT bitcount, 145 OI_UINT* excess); 146 147 INLINE OI_INT allocAdjustedBits(uint8_t* dest, OI_INT bits, OI_INT excess); 148 149 INLINE OI_INT allocExcessBits(uint8_t* dest, OI_INT excess); 150 151 PRIVATE uint32_t internal_CalculateBitrate(OI_CODEC_SBC_FRAME_INFO* frame); 152 153 PRIVATE uint16_t internal_CalculateFramelen(OI_CODEC_SBC_FRAME_INFO* frame); 154 155 void monoBitAllocation(OI_CODEC_SBC_COMMON_CONTEXT* common); 156 157 typedef void (*BIT_ALLOC)(OI_CODEC_SBC_COMMON_CONTEXT* common); 158 159 PRIVATE OI_STATUS internal_DecodeRaw(OI_CODEC_SBC_DECODER_CONTEXT* context, 160 uint8_t bitpool, const OI_BYTE** frameData, 161 uint32_t* frameBytes, int16_t* pcmData, 162 uint32_t* pcmBytes); 163 164 INLINE OI_STATUS internal_DecoderReset(OI_CODEC_SBC_DECODER_CONTEXT* context, 165 uint32_t* decoderData, 166 uint32_t decoderDataBytes, 167 OI_BYTE maxChannels, OI_BYTE pcmStride, 168 OI_BOOL enhanced); 169 170 INLINE uint16_t OI_SBC_CalculateFrameAndHeaderlen( 171 OI_CODEC_SBC_FRAME_INFO* frame, OI_UINT* headerLen_); 172 173 PRIVATE uint32_t OI_SBC_MaxBitpool(OI_CODEC_SBC_FRAME_INFO* frame); 174 175 PRIVATE void OI_SBC_ComputeBitAllocation(OI_CODEC_SBC_COMMON_CONTEXT* frame); 176 PRIVATE uint8_t OI_SBC_CalculateChecksum(OI_CODEC_SBC_FRAME_INFO* frame, 177 OI_BYTE const* data); 178 179 /* Transform functions */ 180 PRIVATE void shift_buffer(SBC_BUFFER_T* dest, SBC_BUFFER_T* src, 181 OI_UINT wordCount); 182 PRIVATE void cosineModulateSynth4(SBC_BUFFER_T* RESTRICT out, 183 int32_t const* RESTRICT in); 184 PRIVATE void SynthWindow40_int32_int32_symmetry_with_sum( 185 int16_t* pcm, SBC_BUFFER_T buffer[80], OI_UINT strideShift); 186 187 INLINE void dct3_4(int32_t* RESTRICT out, int32_t const* RESTRICT in); 188 PRIVATE void analyze4_generated(SBC_BUFFER_T analysisBuffer[RESTRICT 40], 189 int16_t* pcm, OI_UINT strideShift, 190 int32_t subband[4]); 191 192 INLINE void dct3_8(int32_t* RESTRICT out, int32_t const* RESTRICT in); 193 194 PRIVATE void analyze8_generated(SBC_BUFFER_T analysisBuffer[RESTRICT 80], 195 int16_t* pcm, OI_UINT strideShift, 196 int32_t subband[8]); 197 198 #ifdef SBC_ENHANCED 199 PRIVATE void analyze8_enhanced_generated( 200 SBC_BUFFER_T analysisBuffer[RESTRICT 112], int16_t* pcm, 201 OI_UINT strideShift, int32_t subband[8]); 202 #endif 203 204 /* Decoder functions */ 205 206 INLINE void OI_SBC_ReadHeader(OI_CODEC_SBC_COMMON_CONTEXT* common, 207 const OI_BYTE* data); 208 PRIVATE void OI_SBC_ReadScalefactors(OI_CODEC_SBC_COMMON_CONTEXT* common, 209 const OI_BYTE* b, OI_BITSTREAM* bs); 210 PRIVATE void OI_SBC_ReadSamples(OI_CODEC_SBC_DECODER_CONTEXT* common, 211 OI_BITSTREAM* ob); 212 PRIVATE void OI_SBC_ReadSamplesJoint(OI_CODEC_SBC_DECODER_CONTEXT* common, 213 OI_BITSTREAM* global_bs); 214 PRIVATE void OI_SBC_SynthFrame(OI_CODEC_SBC_DECODER_CONTEXT* context, 215 int16_t* pcm, OI_UINT start_block, 216 OI_UINT nrof_blocks); 217 INLINE int32_t OI_SBC_Dequant(uint32_t raw, OI_UINT scale_factor, OI_UINT bits); 218 PRIVATE OI_BOOL OI_SBC_ExamineCommandPacket( 219 OI_CODEC_SBC_DECODER_CONTEXT* context, const OI_BYTE* data, uint32_t len); 220 PRIVATE void OI_SBC_GenerateTestSignal(int16_t pcmData[][2], 221 uint32_t sampleCount); 222 223 PRIVATE void OI_SBC_ExpandFrameFields(OI_CODEC_SBC_FRAME_INFO* frame); 224 PRIVATE OI_STATUS OI_CODEC_SBC_Alloc(OI_CODEC_SBC_COMMON_CONTEXT* common, 225 uint32_t* codecDataAligned, 226 uint32_t codecDataBytes, 227 uint8_t maxChannels, uint8_t pcmStride); 228 /** 229 @} 230 */ 231 232 #endif /* _OI_CODEC_SBC_PRIVATE_H */ 233