1d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/* ------------------------------------------------------------------ 2d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Copyright (C) 1998-2009 PacketVideo 3d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * 4d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * you may not use this file except in compliance with the License. 6d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * You may obtain a copy of the License at 7d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * 8d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * 10d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Unless required by applicable law or agreed to in writing, software 11d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * express or implied. 14d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * See the License for the specific language governing permissions 15d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * and limitations under the License. 16d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * ------------------------------------------------------------------- 17d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 18d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/* 19d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 20d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 21d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber PacketVideo Corp. 22d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber MP3 Decoder Library 23d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 24d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Filename: pvmp3_framedecoder.cpp 25d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 26d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Functions: 27d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_framedecoder 28d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_InitDecoder 29d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_resetDecoder 30d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 31d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Date: 09/21/2007 32d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 33d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 34d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber REVISION HISTORY 35d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 36d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 37d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Description: 38d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 39d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 40d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber INPUT AND OUTPUT DEFINITIONS 41d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 42d9618f23226f46c752e56f712bc4b505117d8b4bAndreas HuberInput 43d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt = pointer to the external interface structure. See the file 44d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3decoder_api.h for a description of each field. 45d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Data type of pointer to a tPVMP3DecoderExternal 46d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber structure. 47d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 48d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pMem = void pointer to hide the internal implementation of the library 49d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber It is cast back to a tmp3dec_file structure. This structure 50d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber contains information that needs to persist between calls to 51d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber this function, or is too big to be placed on the stack, even 52d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber though the data is only needed during execution of this function 53d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Data type void pointer, internally pointer to a tmp3dec_file 54d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber structure. 55d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 56d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 57d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Outputs: 58d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber status = ERROR condition. see structure ERROR_CODE 59d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 60d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Pointers and Buffers Modified: 61d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pMem contents are modified. 62d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt: (more detail in the file pvmp3decoder_api.h) 63d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber inputBufferUsedLength - number of array elements used up by the stream. 64d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber samplingRate - sampling rate in samples per sec 65d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber bitRate - bit rate in bits per second, varies frame to frame. 66d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 67d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 68d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 69d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 70d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber FUNCTIONS DESCRIPTION 71d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 72d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_framedecoder 73d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber frame decoder library driver 74d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_InitDecoder 75d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Decoder Initialization 76d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_resetDecoder 77d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber Reset Decoder 78d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 79d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 80d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber REQUIREMENTS 81d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 82d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 83d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 84d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber REFERENCES 85d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 86d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber [1] ISO MPEG Audio Subgroup Software Simulation Group (1996) 87d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber ISO 13818-3 MPEG-2 Audio Decoder - Lower Sampling Frequency Extension 88d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 89d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 90d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber PSEUDO-CODE 91d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 92d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber------------------------------------------------------------------------------ 93d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber*/ 94d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 95d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 96d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 97d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; INCLUDES 98d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 99d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 100d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 101d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_framedecoder.h" 102d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_dec_defs.h" 103d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_poly_phase_synthesis.h" 104d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_tables.h" 105d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_imdct_synth.h" 106d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_alias_reduction.h" 107d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_reorder.h" 108d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_dequantize_sample.h" 109d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_stereo_proc.h" 110d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_mpeg2_stereo_proc.h" 111d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_get_side_info.h" 112d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_get_scale_factors.h" 113d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_mpeg2_get_scale_factors.h" 114d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_decode_header.h" 115d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_get_main_data_size.h" 116d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "s_tmp3dec_file.h" 117d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_getbits.h" 118d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "mp3_mem_funcs.h" 119d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 120d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 121d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 122d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; MACROS 123d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; Define module specific macros here 124d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 125d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 126d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 127d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 128d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; DEFINES 129d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; Include all pre-processor statements here. Include conditional 130d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; compile variables also. 131d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 132d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 133d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 134d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; LOCAL FUNCTION DEFINITIONS 135d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; Function Prototype declaration 136d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 137d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 138d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 139d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; LOCAL STORE/BUFFER/POINTER DEFINITIONS 140d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; Variable declaration - defined here and used outside this module 141d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 142d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 143d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 144d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; EXTERNAL FUNCTION REFERENCES 145d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; Declare functions defined elsewhere and referenced in this module 146d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 147d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 148d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 149d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 150d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; Declare variables used in this module but defined elsewhere 151d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 152d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 153d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 154d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; FUNCTION CODE 155d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 156d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 157d9618f23226f46c752e56f712bc4b505117d8b4bAndreas HuberERROR_CODE pvmp3_framedecoder(tPVMP3DecoderExternal *pExt, 158d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber void *pMem) 159d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber{ 160d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 161d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber ERROR_CODE errorCode = NO_DECODING_ERROR; 162d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 163d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 crc_error_count = 0; 164d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint32 sent_crc = 0; 165d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint32 computed_crc = 0; 166d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 167d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp3dec_chan *pChVars[CHAN]; 168d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp3dec_file *pVars = (tmp3dec_file *)pMem; 169d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 170d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber mp3Header info_data; 171d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber mp3Header *info = &info_data; 172d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 173d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.pBuffer = pExt->pInputBuffer; 174d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 175d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 176d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.usedBits = pExt->inputBufferUsedLength << 3; 177d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.inputBufferCurrentLength = pExt->inputBufferCurrentLength; 178d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 179d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 180d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber errorCode = pvmp3_decode_header(&pVars->inputStream, 181d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info, 182d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &computed_crc); 183d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 184d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (errorCode != NO_DECODING_ERROR) 185d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 186d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = 0; 187d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return errorCode; 188d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 189d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 190d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->num_channels = (info->mode == MPG_MD_MONO) ? 1 : 2; 191d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->num_channels = pVars->num_channels; 192d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 193d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 outputFrameSize = (info->version_x == MPEG_1) ? 194d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 2 * SUBBANDS_NUMBER * FILTERBANK_BANDS : 195d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber SUBBANDS_NUMBER * FILTERBANK_BANDS; 196d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 197d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber outputFrameSize = (info->mode == MPG_MD_MONO) ? outputFrameSize : outputFrameSize << 1; 198d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 199d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 200d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 201d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Check if output buffer has enough room to hold output PCM 202d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 203d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (pExt->outputFrameSize >= outputFrameSize) 204d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 205d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = outputFrameSize; 206d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 207d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 208d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 209d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = 0; 210d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return OUTPUT_BUFFER_TOO_SMALL; 211d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 212d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 213d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 214d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ LEFT] = &pVars->perChan[ LEFT]; 215d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT] = &pVars->perChan[RIGHT]; 216d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 217d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 218d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 219d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 220d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (info->error_protection) 221d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 222d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 223d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Get crc content 224d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 225d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber sent_crc = getUpTo17bits(&pVars->inputStream, 16); 226d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 227d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 228d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 229d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (info->layer_description == 3) 230d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 231d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 gr; 232d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 ch; 233d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint32 main_data_end; 234d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 bytes_to_discard; 235d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int16 *ptrOutBuffer = pExt->pOutputBuffer; 236d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 237d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 238d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Side Information must be extracted from the bitstream and store for use 239d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * during the decoded of the associated frame 240d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 241d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 242d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber errorCode = pvmp3_get_side_info(&pVars->inputStream, 243d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo, 244d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info, 245d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &computed_crc); 246d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 247d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (errorCode != NO_DECODING_ERROR) 248d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 249d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = 0; 250d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return errorCode; 251d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 252d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 253d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 254d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * If CRC was sent, check that matches the one got while parsing data 255d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * disable crc if this is the desired mode 256d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 257d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (info->error_protection) 258d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 259d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if ((computed_crc != sent_crc) && pExt->crcEnabled) 260d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 261d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber crc_error_count++; 262d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 263d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 264d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 265d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 266d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * main data (scalefactors, Huffman coded, etc,) are not necessarily located 267d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * adjacent to the side-info. Beginning of main data is located using 268d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * field "main_data_begin" of the current frame. The length does not include 269d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * header and side info. 270d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * "main_data_begin" points to the first bit of main data of a frame. It is a negative 271d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * offset in bytes from the first byte of the sync word 272d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * main_data_begin = 0 <===> main data start rigth after side info. 273d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 274d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 275d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 temp = pvmp3_get_main_data_size(info, pVars); 276d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 277d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 278d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 279d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Check if available data holds a full frame, if not flag an error 280d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 281d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 282d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if ((uint32)pVars->predicted_frame_size > pVars->inputStream.inputBufferCurrentLength) 283d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 284d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = 0; 285d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return NO_ENOUGH_MAIN_DATA_ERROR; 286d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 287d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 288d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 289d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Fill in internal circular buffer 290d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 291d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillMainDataBuf(pVars, temp); 292d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 293d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 294d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber main_data_end = pVars->mainDataStream.usedBits >> 3; /* in bytes */ 295d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if ((main_data_end << 3) < pVars->mainDataStream.usedBits) 296d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 297d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber main_data_end++; 298d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.usedBits = main_data_end << 3; 299d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 300d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 301d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 302d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber bytes_to_discard = pVars->frame_start - pVars->sideInfo.main_data_begin - main_data_end; 303d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 304d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 305d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (main_data_end > BUFSIZE) /* check overflow on the buffer */ 306d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 307d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->frame_start -= BUFSIZE; 308d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 309d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.usedBits -= (BUFSIZE << 3); 310d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 311d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 312d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->frame_start += temp; 313d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 314d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 315d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (bytes_to_discard < 0 || crc_error_count) 316d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 317d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 318d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Not enough data to decode, then we should avoid reading this 319d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * data ( getting/ignoring sido info and scale data) 320d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Main data could be located in the previous frame, so an unaccounted 321d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * frame can cause incorrect processing 322d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Just run the polyphase filter to "clean" the history buffer 323d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 324d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber errorCode = NO_ENOUGH_MAIN_DATA_ERROR; 325d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 326d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 327d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Clear the input to these filters 328d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 329d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 330d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)pChVars[RIGHT]->work_buf_int32, 331d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 332d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber SUBBANDS_NUMBER*FILTERBANK_BANDS*sizeof(pChVars[RIGHT]->work_buf_int32[0])); 333d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 334d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)pChVars[LEFT]->work_buf_int32, 335d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 336d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber SUBBANDS_NUMBER*FILTERBANK_BANDS*sizeof(pChVars[LEFT]->work_buf_int32[0])); 337d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 338d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* clear circular buffers, to avoid any glitch */ 339d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pChVars[ LEFT]->circ_buffer[576], 340d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 341d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 480*sizeof(pChVars[ LEFT]->circ_buffer[0])); 342d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pChVars[RIGHT]->circ_buffer[576], 343d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 344d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 480*sizeof(pChVars[RIGHT]->circ_buffer[0])); 345d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 346d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ LEFT]->used_freq_lines = 575; 347d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->used_freq_lines = 575; 348d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 349d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 350d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 351d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 352d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.usedBits += (bytes_to_discard << 3); 353d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 354d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 355d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 356d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * if (fr_ps->header->version_x == MPEG_1), use 2 granules, otherwise just 1 357d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 358d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber for (gr = 0; gr < (1 + !(info->version_x)); gr++) 359d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 360d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (errorCode != NO_ENOUGH_MAIN_DATA_ERROR) 361d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 362d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber for (ch = 0; ch < pVars->num_channels; ch++) 363d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 364d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 part2_start = pVars->mainDataStream.usedBits; 365d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 366d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (info->version_x == MPEG_1) 367d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 368d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 369d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_get_scale_factors(&pVars->scaleFactors[ch], 370d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo, 371d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber gr, 372d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber ch, 373d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->mainDataStream); 374d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 375d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 376d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 377d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 * tmp = pVars->Scratch_mem; 378d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_mpeg2_get_scale_factors(&pVars->scaleFactors[ch], 379d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo, 380d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber gr, 381d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber ch, 382d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info, 383d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber (uint32 *)tmp, 384d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->mainDataStream); 385d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 386d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 387d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ch]->used_freq_lines = pvmp3_huffman_parsing(pChVars[ch]->work_buf_int32, 388d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[ch].gran[gr], 389d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars, 390d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber part2_start, 391d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info); 392d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 393d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 394d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_dequantize_sample(pChVars[ch]->work_buf_int32, 395d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->scaleFactors[ch], 396d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[ch].gran[gr], 397d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ch]->used_freq_lines, 398d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info); 399d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 400d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 401d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 402d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 403d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } /* for (ch=0; ch<stereo; ch++) */ 404d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 405d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (pVars->num_channels == 2) 406d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 407d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 408d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 used_freq_lines = (pChVars[ LEFT]->used_freq_lines > 409d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->used_freq_lines) ? 410d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ LEFT]->used_freq_lines : 411d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->used_freq_lines; 412d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 413d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ LEFT]->used_freq_lines = used_freq_lines; 414d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->used_freq_lines = used_freq_lines; 415d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 416d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (info->version_x == MPEG_1) 417d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 418d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_stereo_proc(pChVars[ LEFT]->work_buf_int32, 419d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->work_buf_int32, 420d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->scaleFactors[RIGHT], 421d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[LEFT].gran[gr], 422d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber used_freq_lines, 423d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info); 424d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 425d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 426d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 427d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 * tmp = pVars->Scratch_mem; 428d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_mpeg2_stereo_proc(pChVars[ LEFT]->work_buf_int32, 429d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->work_buf_int32, 430d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->scaleFactors[RIGHT], 431d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[ LEFT].gran[gr], 432d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[RIGHT].gran[gr], 433d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber (uint32 *)tmp, 434d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber used_freq_lines, 435d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info); 436d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 437d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 438d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 439d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } /* if ( errorCode != NO_ENOUGH_MAIN_DATA_ERROR) */ 440d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 441d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber for (ch = 0; ch < pVars->num_channels; ch++) 442d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 443d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 444d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_reorder(pChVars[ch]->work_buf_int32, 445d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[ch].gran[gr], 446d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pChVars[ ch]->used_freq_lines, 447d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info, 448d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->Scratch_mem); 449d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 450d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_alias_reduction(pChVars[ch]->work_buf_int32, 451d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pVars->sideInfo.ch[ch].gran[gr], 452d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &pChVars[ ch]->used_freq_lines, 453d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber info); 454d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 455d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 456d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 457d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * IMDCT 458d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 459d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* set mxposition 460d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * In case of mixed blocks, # of bands with long 461d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * blocks (2 or 4) else 0 462d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 463d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint16 mixedBlocksLongBlocks = 0; /* 0 = long or short, 2=mixed, 4=mixed 2.5@8000 */ 464d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (pVars->sideInfo.ch[ch].gran[gr].mixed_block_flag && 465d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->sideInfo.ch[ch].gran[gr].window_switching_flag) 466d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 467d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if ((info->version_x == MPEG_2_5) && (info->sampling_frequency == 2)) 468d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 469d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber mixedBlocksLongBlocks = 4; /* mpeg2.5 @ 8 KHz */ 470d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 471d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 472d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 473d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber mixedBlocksLongBlocks = 2; 474d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 475d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 476d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 477d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_imdct_synth(pChVars[ch]->work_buf_int32, 478d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ch]->overlap, 479d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->sideInfo.ch[ch].gran[gr].block_type, 480d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber mixedBlocksLongBlocks, 481d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ ch]->used_freq_lines, 482d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->Scratch_mem); 483d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 484d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 485d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 486d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Polyphase synthesis 487d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 488d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 489d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_poly_phase_synthesis(pChVars[ch], 490d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->num_channels, 491d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->equalizerType, 492d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber &ptrOutBuffer[ch]); 493d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 494d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 495d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber }/* end ch loop */ 496d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 497d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber ptrOutBuffer += pVars->num_channels * SUBBANDS_NUMBER * FILTERBANK_BANDS; 498d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } /* for (gr=0;gr<Max_gr;gr++) */ 499d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 500d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* skip ancillary data */ 501d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (info->bitrate_index > 0) 502d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { /* if not free-format */ 503d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 504d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 ancillary_data_lenght = pVars->predicted_frame_size << 3; 505d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 506d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber ancillary_data_lenght -= pVars->inputStream.usedBits; 507d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 508d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* skip ancillary data */ 509d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (ancillary_data_lenght > 0) 510d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 511d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.usedBits += ancillary_data_lenght; 512d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 513d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 514d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 515d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 516d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 517d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * This overrides a possible NO_ENOUGH_MAIN_DATA_ERROR 518d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 519d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber errorCode = NO_DECODING_ERROR; 520d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 521d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 522d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 523d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 524d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 525d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * The info on the header leads to an unsupported layer, more data 526d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * will not fix this, so this is a bad frame, 527d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 528d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 529d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = 0; 530d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return UNSUPPORTED_LAYER; 531d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 532d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 533d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->inputBufferUsedLength = pVars->inputStream.usedBits >> 3; 534d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->totalNumberOfBitsUsed += pVars->inputStream.usedBits; 535d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->version = info->version_x; 536d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->samplingRate = mp3_s_freq[info->version_x][info->sampling_frequency]; 537d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->bitRate = mp3_bitrate[pExt->version][info->bitrate_index]; 538d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 539d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 540d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 541d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Always verify buffer overrun condition 542d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 543d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 544d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (pExt->inputBufferUsedLength > pExt->inputBufferCurrentLength) 545d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 546d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->outputFrameSize = 0; 547d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber errorCode = NO_ENOUGH_MAIN_DATA_ERROR; 548d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 549d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 550d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return errorCode; 551d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 552d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber} 553d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 554d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 555d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 556d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; FUNCTION CODE 557d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 558d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 559d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber__inline void fillDataBuf(tmp3Bits *pMainData, 560d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint32 val) /* val to write into the buffer */ 561d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber{ 562d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pMainData->pBuffer[module(pMainData->offset++, BUFSIZE)] = (uint8)val; 563d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber} 564d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 565d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 566d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Hubervoid fillMainDataBuf(void *pMem, int32 temp) 567d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber{ 568d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp3dec_file *pVars = (tmp3dec_file *)pMem; 569d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 570d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 571d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 offset = (pVars->inputStream.usedBits) >> INBUF_ARRAY_INDEX_SHIFT; 572d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 573d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 574d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Check if input circular buffer boundaries need to be enforced 575d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 576d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if ((offset + temp) < BUFSIZE) 577d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 578d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint8 * ptr = pVars->inputStream.pBuffer + offset; 579d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 580d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber offset = pVars->mainDataStream.offset; 581d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 582d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 583d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Check if main data circular buffer boundaries need to be enforced 584d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 585d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if ((offset + temp) < BUFSIZE) 586d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 587d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memcpy((pVars->mainDataStream.pBuffer + offset), ptr, temp*sizeof(uint8)); 588d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.offset += temp; 589d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 590d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 591d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 592d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 tmp1 = *(ptr++); 593d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber for (int32 nBytes = temp >> 1; nBytes != 0; nBytes--) /* read main data. */ 594d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 595d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber int32 tmp2 = *(ptr++); 596d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillDataBuf(&pVars->mainDataStream, tmp1); 597d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillDataBuf(&pVars->mainDataStream, tmp2); 598d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp1 = *(ptr++); 599d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 600d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 601d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (temp&1) 602d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 603d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillDataBuf(&pVars->mainDataStream, tmp1); 604d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 605d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 606d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* adjust circular buffer counter */ 607d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.offset = module(pVars->mainDataStream.offset, BUFSIZE); 608d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 609d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 610d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber else 611d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 612d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber for (int32 nBytes = temp >> 1; nBytes != 0; nBytes--) /* read main data. */ 613d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 614d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillDataBuf(&pVars->mainDataStream, *(pVars->inputStream.pBuffer + module(offset++ , BUFSIZE))); 615d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillDataBuf(&pVars->mainDataStream, *(pVars->inputStream.pBuffer + module(offset++ , BUFSIZE))); 616d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 617d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber if (temp&1) 618d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber { 619d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber fillDataBuf(&pVars->mainDataStream, *(pVars->inputStream.pBuffer + module(offset , BUFSIZE))); 620d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 621d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber } 622d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 623d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 624d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.usedBits += (temp) << INBUF_ARRAY_INDEX_SHIFT; 625d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber} 626d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 627d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 628d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 629d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 630d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 631d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; FUNCTION CODE 632d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 633d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 634d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huberuint32 pvmp3_decoderMemRequirements(void) 635d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber{ 636d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber uint32 size; 637d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 638d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber size = (uint32) sizeof(tmp3dec_file); 639d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber return (size); 640d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber} 641d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 642d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 643d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 644d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 645d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; FUNCTION CODE 646d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 647d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 648d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber#include "pvmp3_decode_huff_cw.h" 649d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 650d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Hubervoid pvmp3_InitDecoder(tPVMP3DecoderExternal *pExt, 651d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber void *pMem) 652d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber{ 653d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 654d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp3dec_file *pVars; 655d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber huffcodetab *pHuff; 656d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 657d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars = (tmp3dec_file *)pMem; 658d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 659d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->num_channels = 0; 660d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 661d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->totalNumberOfBitsUsed = 0; 662d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->inputBufferCurrentLength = 0; 663d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pExt->inputBufferUsedLength = 0; 664d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 665d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.offset = 0; 666d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 667d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)pVars->mainDataBuffer, 668d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 669d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber BUFSIZE*sizeof(*pVars->mainDataBuffer)); 670d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 671d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 672d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.pBuffer = pExt->pInputBuffer; 673d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 674d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 675d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Initialize huffman decoding table 676d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 677d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 678d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff = pVars->ht; 679d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[0].linbits = 0; 680d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[0].pdec_huff_tab = pvmp3_decode_huff_cw_tab0; 681d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[1].linbits = 0; 682d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[1].pdec_huff_tab = pvmp3_decode_huff_cw_tab1; 683d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[2].linbits = 0; 684d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[2].pdec_huff_tab = pvmp3_decode_huff_cw_tab2; 685d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[3].linbits = 0; 686d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[3].pdec_huff_tab = pvmp3_decode_huff_cw_tab3; 687d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[4].linbits = 0; 688d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[4].pdec_huff_tab = pvmp3_decode_huff_cw_tab0; /* tbl 4 is not used */ 689d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[5].linbits = 4; 690d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[5].pdec_huff_tab = pvmp3_decode_huff_cw_tab5; 691d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[6].linbits = 0; 692d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[6].pdec_huff_tab = pvmp3_decode_huff_cw_tab6; 693d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[7].linbits = 0; 694d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[7].pdec_huff_tab = pvmp3_decode_huff_cw_tab7; 695d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[8].linbits = 0; 696d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[8].pdec_huff_tab = pvmp3_decode_huff_cw_tab8; 697d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[9].linbits = 0; 698d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[9].pdec_huff_tab = pvmp3_decode_huff_cw_tab9; 699d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[10].linbits = 0; 700d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[10].pdec_huff_tab = pvmp3_decode_huff_cw_tab10; 701d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[11].linbits = 0; 702d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[11].pdec_huff_tab = pvmp3_decode_huff_cw_tab11; 703d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[12].linbits = 0; 704d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[12].pdec_huff_tab = pvmp3_decode_huff_cw_tab12; 705d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[13].linbits = 0; 706d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[13].pdec_huff_tab = pvmp3_decode_huff_cw_tab13; 707d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[14].linbits = 0; 708d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[14].pdec_huff_tab = pvmp3_decode_huff_cw_tab0; /* tbl 14 is not used */ 709d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[15].linbits = 0; 710d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[15].pdec_huff_tab = pvmp3_decode_huff_cw_tab15; 711d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[16].linbits = 1; 712d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[16].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 713d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[17].linbits = 2; 714d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[17].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 715d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[18].linbits = 3; 716d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[18].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 717d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[19].linbits = 4; 718d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[19].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 719d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[20].linbits = 6; 720d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[20].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 721d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[21].linbits = 8; 722d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[21].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 723d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[22].linbits = 10; 724d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[22].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 725d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[23].linbits = 13; 726d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[23].pdec_huff_tab = pvmp3_decode_huff_cw_tab16; 727d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[24].linbits = 4; 728d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[24].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 729d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[25].linbits = 5; 730d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[25].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 731d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[26].linbits = 6; 732d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[26].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 733d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[27].linbits = 7; 734d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[27].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 735d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[28].linbits = 8; 736d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[28].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 737d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[29].linbits = 9; 738d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[29].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 739d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[30].linbits = 11; 740d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[30].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 741d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[31].linbits = 13; 742d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[31].pdec_huff_tab = pvmp3_decode_huff_cw_tab24; 743d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[32].linbits = 0; 744d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[32].pdec_huff_tab = pvmp3_decode_huff_cw_tab32; 745d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[33].linbits = 0; 746d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pHuff[33].pdec_huff_tab = pvmp3_decode_huff_cw_tab33; 747d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 748d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 749d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Initialize polysynthesis circular buffer mechanism 750d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 751d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* clear buffers */ 752d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 753d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pvmp3_resetDecoder(pMem); 754d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 755d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber} 756d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 757d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 758d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber/*---------------------------------------------------------------------------- 759d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber; FUNCTION CODE 760d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber----------------------------------------------------------------------------*/ 761d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 762d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 763d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Hubervoid pvmp3_resetDecoder(void *pMem) 764d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber{ 765d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 766d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp3dec_file *pVars; 767d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber tmp3dec_chan *pChVars[CHAN]; 768d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 769d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars = (tmp3dec_file *)pMem; 770d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ LEFT] = &pVars->perChan[ LEFT]; 771d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT] = &pVars->perChan[RIGHT]; 772d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 773d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->frame_start = 0; 774d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 775d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.offset = 0; 776d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 777d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.pBuffer = pVars->mainDataBuffer; 778d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->mainDataStream.usedBits = 0; 779d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 780d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 781d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pVars->inputStream.usedBits = 0; // in bits 782d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 783d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 784d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[ LEFT]->used_freq_lines = 575; 785d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pChVars[RIGHT]->used_freq_lines = 575; 786d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 787d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 788d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 789d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Initialize polysynthesis circular buffer mechanism 790d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 791d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 792d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pChVars[ LEFT]->circ_buffer[576], 793d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 794d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 480*sizeof(pChVars[ LEFT]->circ_buffer[0])); 795d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pChVars[RIGHT]->circ_buffer[576], 796d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 797d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 480*sizeof(pChVars[RIGHT]->circ_buffer[0])); 798d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 799d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 800d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)pChVars[ LEFT]->overlap, 801d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 802d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber SUBBANDS_NUMBER*FILTERBANK_BANDS*sizeof(pChVars[ LEFT]->overlap[0])); 803d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 804d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 805d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)pChVars[ RIGHT]->overlap, 806d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 807d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber SUBBANDS_NUMBER*FILTERBANK_BANDS*sizeof(pChVars[ RIGHT]->overlap[0])); 808d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 809d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 810d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 811d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 812d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 813d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber /* 814d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber * Clear all the structures 815d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber */ 816d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 817d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 818d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pVars->scaleFactors[RIGHT], 819d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 820d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber sizeof(mp3ScaleFactors)); 821d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 822d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pVars->scaleFactors[LEFT], 823d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 824d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber sizeof(mp3ScaleFactors)); 825d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 826d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pVars->sideInfo, 827d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 828d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber sizeof(mp3SideInfo)); 829d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 830d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber pv_memset((void*)&pVars->sideInfo, 831d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 0, 832d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber sizeof(mp3SideInfo)); 833d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber 834d9618f23226f46c752e56f712bc4b505117d8b4bAndreas Huber} 835