Home | History | Annotate | Download | only in srce 
      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 
     37 #include <oi_codec_sbc_private.h>
     38 
     39 OI_STATUS OI_CODEC_SBC_DecoderConfigureRaw(OI_CODEC_SBC_DECODER_CONTEXT *context,
     40                                            OI_BOOL enhanced,
     41                                            OI_UINT8 frequency,
     42                                            OI_UINT8 mode,
     43                                            OI_UINT8 subbands,
     44                                            OI_UINT8 blocks,
     45                                            OI_UINT8 alloc,
     46                                            OI_UINT8 maxBitpool)
     47 {
     48     if (frequency > SBC_FREQ_48000) {
     49         return OI_STATUS_INVALID_PARAMETERS;
     50     }
     51 
     52     if (enhanced) {
     53 #ifdef SBC_ENHANCED
     54         if (subbands != SBC_SUBBANDS_8) {
     55             return OI_STATUS_INVALID_PARAMETERS;
     56         }
     57 #else
     58         return OI_STATUS_INVALID_PARAMETERS;
     59 #endif
     60     }
     61 
     62     if (mode > SBC_JOINT_STEREO) {
     63         return OI_STATUS_INVALID_PARAMETERS;
     64     }
     65 
     66     if (subbands > SBC_SUBBANDS_8) {
     67         return OI_STATUS_INVALID_PARAMETERS;
     68     }
     69 
     70     if (blocks > SBC_BLOCKS_16) {
     71         return OI_STATUS_INVALID_PARAMETERS;
     72     }
     73 
     74     if (alloc > SBC_SNR) {
     75         return OI_STATUS_INVALID_PARAMETERS;
     76     }
     77 
     78 #ifdef SBC_ENHANCED
     79     context->common.frameInfo.enhanced = enhanced;
     80 #else
     81     context->common.frameInfo.enhanced = FALSE;
     82 #endif
     83     context->common.frameInfo.freqIndex = frequency;
     84     context->common.frameInfo.mode = mode;
     85     context->common.frameInfo.subbands = subbands;
     86     context->common.frameInfo.blocks = blocks;
     87     context->common.frameInfo.alloc = alloc;
     88     context->common.frameInfo.bitpool = maxBitpool;
     89 
     90     OI_SBC_ExpandFrameFields(&context->common.frameInfo);
     91 
     92     if (context->common.frameInfo.nrof_channels >= context->common.pcmStride) {
     93         return OI_STATUS_INVALID_PARAMETERS;
     94     }
     95 
     96     return OI_OK;
     97 }
     98 
     99 
    100 
    101 OI_STATUS OI_CODEC_SBC_DecodeRaw(OI_CODEC_SBC_DECODER_CONTEXT *context,
    102                                  OI_UINT8 bitpool,
    103                                  const OI_BYTE **frameData,
    104                                  OI_UINT32 *frameBytes,
    105                                  OI_INT16 *pcmData,
    106                                  OI_UINT32 *pcmBytes)
    107 {
    108     return internal_DecodeRaw(context,
    109                               bitpool,
    110                               frameData,
    111                               frameBytes,
    112                               pcmData,
    113                               pcmBytes);
    114 }
    115 
    116 OI_STATUS OI_CODEC_SBC_DecoderLimit(OI_CODEC_SBC_DECODER_CONTEXT *context,
    117                                     OI_BOOL                       enhanced,
    118                                     OI_UINT8                      subbands)
    119 {
    120 	if (enhanced)
    121 	{
    122 #ifdef SBC_ENHANCED
    123         context->enhancedEnabled = TRUE;
    124 #else
    125         context->enhancedEnabled = FALSE;
    126 #endif
    127 	}
    128 	else
    129 	{
    130         context->enhancedEnabled = FALSE;
    131 	}
    132     context->restrictSubbands = subbands;
    133     context->limitFrameFormat = TRUE;
    134     return OI_OK;
    135 }
    136 
    137 
    138 /**
    139 @}
    140 */
    141