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