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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 2014 The Android Open Source Project
      4  *  Copyright 2006 Open Interface North America, Inc. All rights reserved.
      5  *
      6  *  Licensed under the Apache License, Version 2.0 (the "License");
      7  *  you may not use this file except in compliance with the License.
      8  *  You may obtain a copy of the License at:
      9  *
     10  *  http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  *  Unless required by applicable law or agreed to in writing, software
     13  *  distributed under the License is distributed on an "AS IS" BASIS,
     14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  *  See the License for the specific language governing permissions and
     16  *  limitations under the License.
     17  *
     18  ******************************************************************************/
     19 
     20 /*******************************************************************************
     21   $Revision: #1 $
     22  ******************************************************************************/
     23 
     24 /**
     25 @file
     26 This file exposes OINA-specific interfaces to decoder functions.
     27 
     28 @ingroup codec_internal
     29 */
     30 
     31 /**
     32 @addtogroup codec_internal
     33 @{
     34 */
     35 
     36 #include <oi_codec_sbc_private.h>
     37 
     38 OI_STATUS OI_CODEC_SBC_DecoderConfigureRaw(
     39     OI_CODEC_SBC_DECODER_CONTEXT* context, OI_BOOL enhanced, uint8_t frequency,
     40     uint8_t mode, uint8_t subbands, uint8_t blocks, uint8_t alloc,
     41     uint8_t maxBitpool) {
     42   if (frequency > SBC_FREQ_48000) {
     43     return OI_STATUS_INVALID_PARAMETERS;
     44   }
     45 
     46   if (enhanced) {
     47 #ifdef SBC_ENHANCED
     48     if (subbands != SBC_SUBBANDS_8) {
     49       return OI_STATUS_INVALID_PARAMETERS;
     50     }
     51 #else
     52     return OI_STATUS_INVALID_PARAMETERS;
     53 #endif
     54   }
     55 
     56   if (mode > SBC_JOINT_STEREO) {
     57     return OI_STATUS_INVALID_PARAMETERS;
     58   }
     59 
     60   if (subbands > SBC_SUBBANDS_8) {
     61     return OI_STATUS_INVALID_PARAMETERS;
     62   }
     63 
     64   if (blocks > SBC_BLOCKS_16) {
     65     return OI_STATUS_INVALID_PARAMETERS;
     66   }
     67 
     68   if (alloc > SBC_SNR) {
     69     return OI_STATUS_INVALID_PARAMETERS;
     70   }
     71 
     72 #ifdef SBC_ENHANCED
     73   context->common.frameInfo.enhanced = enhanced;
     74 #else
     75   context->common.frameInfo.enhanced = FALSE;
     76 #endif
     77   context->common.frameInfo.freqIndex = frequency;
     78   context->common.frameInfo.mode = mode;
     79   context->common.frameInfo.subbands = subbands;
     80   context->common.frameInfo.blocks = blocks;
     81   context->common.frameInfo.alloc = alloc;
     82   context->common.frameInfo.bitpool = maxBitpool;
     83 
     84   OI_SBC_ExpandFrameFields(&context->common.frameInfo);
     85 
     86   if (context->common.frameInfo.nrof_channels >= context->common.pcmStride) {
     87     return OI_STATUS_INVALID_PARAMETERS;
     88   }
     89 
     90   return OI_OK;
     91 }
     92 
     93 OI_STATUS OI_CODEC_SBC_DecodeRaw(OI_CODEC_SBC_DECODER_CONTEXT* context,
     94                                  uint8_t bitpool, const OI_BYTE** frameData,
     95                                  uint32_t* frameBytes, int16_t* pcmData,
     96                                  uint32_t* pcmBytes) {
     97   return internal_DecodeRaw(context, bitpool, frameData, frameBytes, pcmData,
     98                             pcmBytes);
     99 }
    100 
    101 OI_STATUS OI_CODEC_SBC_DecoderLimit(OI_CODEC_SBC_DECODER_CONTEXT* context,
    102                                     OI_BOOL enhanced, uint8_t subbands) {
    103   if (enhanced) {
    104 #ifdef SBC_ENHANCED
    105     context->enhancedEnabled = TRUE;
    106 #else
    107     context->enhancedEnabled = FALSE;
    108 #endif
    109   } else {
    110     context->enhancedEnabled = FALSE;
    111   }
    112   context->restrictSubbands = subbands;
    113   context->limitFrameFormat = TRUE;
    114   return OI_OK;
    115 }
    116 
    117 /**
    118 @}
    119 */
    120