/****************************************************************************** * * Copyright (C) 2014 The Android Open Source Project * Copyright 2003 - 2004 Open Interface North America, Inc. All rights * reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ #ifndef _OI_CODEC_SBC_PRIVATE_H #define _OI_CODEC_SBC_PRIVATE_H /******************************************************************************* $Revision: #1 $ ******************************************************************************/ /** @file Function prototypes and macro definitions used internally by the codec. @ingroup codec_internal */ /** @addtogroup codec_internal @{ */ #ifdef USE_RESTRICT_KEYWORD #define RESTRICT restrict #else #define RESTRICT #endif #ifdef CODEC_DEBUG #include #define ERROR(x) \ do { \ printf x; \ printf("\n"); \ } while (0) #else #define ERROR(x) #endif #ifdef TRACE_EXECUTION #define TRACE(x) \ do { \ printf x; \ printf("\n"); \ } while (0) #else #define TRACE(x) #endif #ifndef PRIVATE #define PRIVATE #endif #ifndef INLINE #define INLINE #endif #include "oi_assert.h" #include "oi_codec_sbc.h" #ifndef OI_SBC_SYNCWORD #define OI_SBC_SYNCWORD 0x9c #endif #ifndef DIVIDE #define DIVIDE(a, b) ((a) / (b)) #endif typedef union { uint8_t uint8[SBC_MAX_BANDS]; uint32_t uint32[SBC_MAX_BANDS / 4]; } BITNEED_UNION1; typedef union { uint8_t uint8[2 * SBC_MAX_BANDS]; uint32_t uint32[2 * SBC_MAX_BANDS / 4]; } BITNEED_UNION2; static const uint16_t freq_values[] = {16000, 32000, 44100, 48000}; static const uint8_t block_values[] = {4, 8, 12, 16}; static const uint8_t channel_values[] = {1, 2, 2, 2}; static const uint8_t band_values[] = {4, 8}; #define TEST_MODE_SENTINEL "OINA" #define TEST_MODE_SENTINEL_LENGTH 4 /** Used internally. */ typedef struct { union { const uint8_t* r; uint8_t* w; } ptr; uint32_t value; OI_UINT bitPtr; } OI_BITSTREAM; #define VALID_INT16(x) (((x) >= OI_INT16_MIN) && ((x) <= OI_INT16_MAX)) #define VALID_INT32(x) (((x) >= OI_INT32_MIN) && ((x) <= OI_INT32_MAX)) #define DCTII_8_SHIFT_IN 0 #define DCTII_8_SHIFT_OUT (16 - DCTII_8_SHIFT_IN) #define DCTII_8_SHIFT_0 (DCTII_8_SHIFT_OUT) #define DCTII_8_SHIFT_1 (DCTII_8_SHIFT_OUT) #define DCTII_8_SHIFT_2 (DCTII_8_SHIFT_OUT) #define DCTII_8_SHIFT_3 (DCTII_8_SHIFT_OUT) #define DCTII_8_SHIFT_4 (DCTII_8_SHIFT_OUT) #define DCTII_8_SHIFT_5 (DCTII_8_SHIFT_OUT) #define DCTII_8_SHIFT_6 (DCTII_8_SHIFT_OUT - 1) #define DCTII_8_SHIFT_7 (DCTII_8_SHIFT_OUT - 2) #define DCT_SHIFT 15 #define DCTIII_4_SHIFT_IN 2 #define DCTIII_4_SHIFT_OUT 15 #define DCTIII_8_SHIFT_IN 3 #define DCTIII_8_SHIFT_OUT 14 OI_UINT computeBitneed(OI_CODEC_SBC_COMMON_CONTEXT* common, uint8_t* bitneeds, OI_UINT ch, OI_UINT* preferredBitpool); void oneChannelBitAllocation(OI_CODEC_SBC_COMMON_CONTEXT* common, BITNEED_UNION1* bitneeds, OI_UINT ch, OI_UINT bitcount); OI_INT adjustToFitBitpool(const OI_UINT bitpool, uint32_t* bitneeds, const OI_UINT subbands, OI_UINT bitcount, OI_UINT* excess); INLINE OI_INT allocAdjustedBits(uint8_t* dest, OI_INT bits, OI_INT excess); INLINE OI_INT allocExcessBits(uint8_t* dest, OI_INT excess); PRIVATE uint32_t internal_CalculateBitrate(OI_CODEC_SBC_FRAME_INFO* frame); PRIVATE uint16_t internal_CalculateFramelen(OI_CODEC_SBC_FRAME_INFO* frame); void monoBitAllocation(OI_CODEC_SBC_COMMON_CONTEXT* common); typedef void (*BIT_ALLOC)(OI_CODEC_SBC_COMMON_CONTEXT* common); PRIVATE OI_STATUS internal_DecodeRaw(OI_CODEC_SBC_DECODER_CONTEXT* context, uint8_t bitpool, const OI_BYTE** frameData, uint32_t* frameBytes, int16_t* pcmData, uint32_t* pcmBytes); INLINE OI_STATUS internal_DecoderReset(OI_CODEC_SBC_DECODER_CONTEXT* context, uint32_t* decoderData, uint32_t decoderDataBytes, OI_BYTE maxChannels, OI_BYTE pcmStride, OI_BOOL enhanced); INLINE uint16_t OI_SBC_CalculateFrameAndHeaderlen( OI_CODEC_SBC_FRAME_INFO* frame, OI_UINT* headerLen_); PRIVATE uint32_t OI_SBC_MaxBitpool(OI_CODEC_SBC_FRAME_INFO* frame); PRIVATE void OI_SBC_ComputeBitAllocation(OI_CODEC_SBC_COMMON_CONTEXT* frame); PRIVATE uint8_t OI_SBC_CalculateChecksum(OI_CODEC_SBC_FRAME_INFO* frame, OI_BYTE const* data); /* Transform functions */ PRIVATE void shift_buffer(SBC_BUFFER_T* dest, SBC_BUFFER_T* src, OI_UINT wordCount); PRIVATE void cosineModulateSynth4(SBC_BUFFER_T* RESTRICT out, int32_t const* RESTRICT in); PRIVATE void SynthWindow40_int32_int32_symmetry_with_sum( int16_t* pcm, SBC_BUFFER_T buffer[80], OI_UINT strideShift); INLINE void dct3_4(int32_t* RESTRICT out, int32_t const* RESTRICT in); PRIVATE void analyze4_generated(SBC_BUFFER_T analysisBuffer[RESTRICT 40], int16_t* pcm, OI_UINT strideShift, int32_t subband[4]); INLINE void dct3_8(int32_t* RESTRICT out, int32_t const* RESTRICT in); PRIVATE void analyze8_generated(SBC_BUFFER_T analysisBuffer[RESTRICT 80], int16_t* pcm, OI_UINT strideShift, int32_t subband[8]); #ifdef SBC_ENHANCED PRIVATE void analyze8_enhanced_generated( SBC_BUFFER_T analysisBuffer[RESTRICT 112], int16_t* pcm, OI_UINT strideShift, int32_t subband[8]); #endif /* Decoder functions */ INLINE void OI_SBC_ReadHeader(OI_CODEC_SBC_COMMON_CONTEXT* common, const OI_BYTE* data); PRIVATE void OI_SBC_ReadScalefactors(OI_CODEC_SBC_COMMON_CONTEXT* common, const OI_BYTE* b, OI_BITSTREAM* bs); PRIVATE void OI_SBC_ReadSamples(OI_CODEC_SBC_DECODER_CONTEXT* common, OI_BITSTREAM* ob); PRIVATE void OI_SBC_ReadSamplesJoint(OI_CODEC_SBC_DECODER_CONTEXT* common, OI_BITSTREAM* global_bs); PRIVATE void OI_SBC_SynthFrame(OI_CODEC_SBC_DECODER_CONTEXT* context, int16_t* pcm, OI_UINT start_block, OI_UINT nrof_blocks); INLINE int32_t OI_SBC_Dequant(uint32_t raw, OI_UINT scale_factor, OI_UINT bits); PRIVATE OI_BOOL OI_SBC_ExamineCommandPacket( OI_CODEC_SBC_DECODER_CONTEXT* context, const OI_BYTE* data, uint32_t len); PRIVATE void OI_SBC_GenerateTestSignal(int16_t pcmData[][2], uint32_t sampleCount); PRIVATE void OI_SBC_ExpandFrameFields(OI_CODEC_SBC_FRAME_INFO* frame); PRIVATE OI_STATUS OI_CODEC_SBC_Alloc(OI_CODEC_SBC_COMMON_CONTEXT* common, uint32_t* codecDataAligned, uint32_t codecDataBytes, uint8_t maxChannels, uint8_t pcmStride); /** @} */ #endif /* _OI_CODEC_SBC_PRIVATE_H */