591 lines
13 KiB
C++
591 lines
13 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "acm_amrwb.h"
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#include "acm_common_defs.h"
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#include "acm_neteq.h"
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#include "audio_coding_module_typedefs.h"
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#include "rw_lock_wrapper.h"
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#include "trace.h"
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#include "webrtc_neteq.h"
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#include "webrtc_neteq_help_macros.h"
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#ifdef WEBRTC_CODEC_AMRWB
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// NOTE! GSM AMR-wb is not included in the open-source package. Modify this file or your
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// codec API to match the function call and name of used AMR-wb API file.
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// #include "amrwb_interface.h"
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#endif
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namespace webrtc
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{
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#ifndef WEBRTC_CODEC_AMRWB
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ACMAMRwb::ACMAMRwb(WebRtc_Word16 /* codecID*/)
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{
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return;
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}
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ACMAMRwb::~ACMAMRwb()
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{
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return;
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}
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WebRtc_Word16
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ACMAMRwb::InternalEncode(
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WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16* /* bitStreamLenByte */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMAMRwb::DecodeSafe(
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WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16 /* bitStreamLenByte */,
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WebRtc_Word16* /* audio */,
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WebRtc_Word16* /* audioSamples */,
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WebRtc_Word8* /* speechType */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMAMRwb::EnableDTX()
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{
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return -1;
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}
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WebRtc_Word16
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ACMAMRwb::DisableDTX()
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{
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return -1;
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}
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WebRtc_Word16
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ACMAMRwb::InternalInitEncoder(
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WebRtcACMCodecParams* /* codecParams */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMAMRwb::InternalInitDecoder(
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WebRtcACMCodecParams* /* codecParams */)
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{
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return -1;
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}
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WebRtc_Word32
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ACMAMRwb::CodecDef(
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WebRtcNetEQ_CodecDef& /* codecDef */,
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const CodecInst& /* codecInst */)
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{
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return -1;
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}
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ACMGenericCodec*
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ACMAMRwb::CreateInstance(void)
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{
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return NULL;
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}
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WebRtc_Word16
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ACMAMRwb::InternalCreateEncoder()
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{
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return -1;
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}
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void
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ACMAMRwb::DestructEncoderSafe()
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{
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return;
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}
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WebRtc_Word16
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ACMAMRwb::InternalCreateDecoder()
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{
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return -1;
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}
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void
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ACMAMRwb::DestructDecoderSafe()
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{
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return;
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}
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WebRtc_Word16
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ACMAMRwb::SetBitRateSafe(
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const WebRtc_Word32 /* rate */)
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{
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return -1;
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}
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void
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ACMAMRwb::InternalDestructEncoderInst(
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void* /* ptrInst */)
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{
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return;
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}
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WebRtc_Word16
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ACMAMRwb::SetAMRwbEncoderPackingFormat(
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ACMAMRPackingFormat /* packingFormat */)
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{
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return -1;
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}
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ACMAMRPackingFormat
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ACMAMRwb::AMRwbEncoderPackingFormat() const
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{
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return AMRUndefined;
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}
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WebRtc_Word16 ACMAMRwb::SetAMRwbDecoderPackingFormat(
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ACMAMRPackingFormat /* packingFormat */)
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{
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return -1;
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}
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ACMAMRPackingFormat
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ACMAMRwb::AMRwbDecoderPackingFormat() const
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{
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return AMRUndefined;
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}
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WebRtc_Word16
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ACMAMRwb::UnregisterFromNetEqSafe(
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ACMNetEQ* /* netEq */,
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WebRtc_Word16 /* payloadType */)
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{
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return -1;
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}
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#else //===================== Actual Implementation =======================
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#define AMRWB_MODE_7k 0
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#define AMRWB_MODE_9k 1
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#define AMRWB_MODE_12k 2
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#define AMRWB_MODE_14k 3
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#define AMRWB_MODE_16k 4
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#define AMRWB_MODE_18k 5
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#define AMRWB_MODE_20k 6
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#define AMRWB_MODE_23k 7
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#define AMRWB_MODE_24k 8
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// Remove when integrating a real GSM AMR wrapper
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extern WebRtc_Word16 WebRtcAmrWb_CreateEnc(AMRWB_encinst_t_** encInst);
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extern WebRtc_Word16 WebRtcAmrWb_CreateDec(AMRWB_decinst_t_** decInst);
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extern WebRtc_Word16 WebRtcAmrWb_FreeEnc(AMRWB_encinst_t_* encInst);
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extern WebRtc_Word16 WebRtcAmrWb_FreeDec(AMRWB_decinst_t_* decInst);
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extern WebRtc_Word16 WebRtcAmrWb_Encode(AMRWB_encinst_t_* encInst,
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WebRtc_Word16* input,
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WebRtc_Word16 len,
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WebRtc_Word16*output,
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WebRtc_Word16 mode);
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extern WebRtc_Word16 WebRtcAmrWb_EncoderInit(AMRWB_encinst_t_* encInst,
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WebRtc_Word16 dtxMode);
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extern WebRtc_Word16 WebRtcAmrWb_EncodeBitmode(AMRWB_encinst_t_* encInst,
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ACMAMRPackingFormat format);
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extern WebRtc_Word16 WebRtcAmrWb_Decode(AMRWB_decinst_t_* decInst);
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extern WebRtc_Word16 WebRtcAmrWb_DecodePlc(AMRWB_decinst_t_* decInst);
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extern WebRtc_Word16 WebRtcAmrWb_DecoderInit(AMRWB_decinst_t_* decInst);
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extern WebRtc_Word16 WebRtcAmrWb_DecodeBitmode(AMRWB_decinst_t_* decInst,
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ACMAMRPackingFormat format);
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ACMAMRwb::ACMAMRwb(WebRtc_Word16 codecID):
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_encoderInstPtr(NULL),
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_decoderInstPtr(NULL),
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_encodingMode(-1), // invalid value
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_encodingRate(0) // invalid value
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{
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_codecID = codecID;
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_hasInternalDTX = true;
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_encoderPackingFormat = AMRBandwidthEfficient;
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_decoderPackingFormat = AMRBandwidthEfficient;
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return;
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}
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ACMAMRwb::~ACMAMRwb()
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{
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if(_encoderInstPtr != NULL)
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{
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WebRtcAmrWb_FreeEnc(_encoderInstPtr);
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_encoderInstPtr = NULL;
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}
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if(_decoderInstPtr != NULL)
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{
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WebRtcAmrWb_FreeDec(_decoderInstPtr);
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_decoderInstPtr = NULL;
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}
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return;
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}
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WebRtc_Word16
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ACMAMRwb::InternalEncode(
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WebRtc_UWord8* bitStream,
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WebRtc_Word16* bitStreamLenByte)
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{
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WebRtc_Word16 vadDecision = 1;
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// sanity check, if the rate is set correctly. we might skip this
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// sanity check. if rate is not set correctly, initialization flag
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// should be false and should not be here.
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if((_encodingMode < AMRWB_MODE_7k) || (_encodingMode > AMRWB_MODE_24k))
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{
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*bitStreamLenByte = 0;
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return -1;
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}
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*bitStreamLenByte =
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WebRtcAmrWb_Encode(_encoderInstPtr, &_inAudio[_inAudioIxRead],
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_frameLenSmpl, (WebRtc_Word16*)bitStream, _encodingMode);
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// Update VAD, if internal DTX is used
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if(_hasInternalDTX && _dtxEnabled)
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{
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if (*bitStreamLenByte <= (7*_frameLenSmpl/160))
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{
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vadDecision = 0;
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}
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for(WebRtc_Word16 n = 0; n < MAX_FRAME_SIZE_10MSEC; n++)
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{
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_vadLabel[n] = vadDecision;
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}
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}
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// increment the read index this tell the caller that how far
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// we have gone forward in reading the audio buffer
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_inAudioIxRead += _frameLenSmpl;
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return *bitStreamLenByte;
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}
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WebRtc_Word16
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ACMAMRwb::DecodeSafe(
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WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16 /* bitStreamLenByte */,
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WebRtc_Word16* /* audio */,
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WebRtc_Word16* /* audioSamples */,
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WebRtc_Word8* /* speechType */)
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{
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return 0;
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}
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WebRtc_Word16
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ACMAMRwb::EnableDTX()
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{
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if(_dtxEnabled)
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{
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return 0;
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}
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else if(_encoderExist) // check if encoder exist
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{
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// enable DTX
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if(WebRtcAmrWb_EncoderInit(_encoderInstPtr, 1) < 0)
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{
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return -1;
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}
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_dtxEnabled = true;
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return 0;
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}
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else
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{
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return -1;
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}
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}
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WebRtc_Word16
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ACMAMRwb::DisableDTX()
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{
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if(!_dtxEnabled)
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{
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return 0;
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}
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else if(_encoderExist) // check if encoder exist
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{
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// disable DTX
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if(WebRtcAmrWb_EncoderInit(_encoderInstPtr, 0) < 0)
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{
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return -1;
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}
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_dtxEnabled = false;
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return 0;
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}
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else
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{
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// encoder doesn't exists, therefore disabling is harmless
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return 0;
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}
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}
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WebRtc_Word16
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ACMAMRwb::InternalInitEncoder(
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WebRtcACMCodecParams* codecParams)
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{
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// sanity check
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if (_encoderInstPtr == NULL)
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{
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return -1;
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}
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WebRtc_Word16 status = SetBitRateSafe((codecParams->codecInstant).rate);
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status += (WebRtcAmrWb_EncoderInit(
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_encoderInstPtr, ((codecParams->enableDTX)? 1:0)) < 0)? -1:0;
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status += (WebRtcAmrWb_EncodeBitmode(
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_encoderInstPtr, _encoderPackingFormat ) < 0)? -1:0;
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return (status < 0)? -1:0;
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}
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WebRtc_Word16
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ACMAMRwb::InternalInitDecoder(
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WebRtcACMCodecParams* /* codecParams */)
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{
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WebRtc_Word16 status = WebRtcAmrWb_DecodeBitmode(
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_decoderInstPtr, _decoderPackingFormat);
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status += ((WebRtcAmrWb_DecoderInit(_decoderInstPtr) < 0)? -1:0);
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return (status < 0)? -1:0;
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}
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WebRtc_Word32
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ACMAMRwb::CodecDef(
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WebRtcNetEQ_CodecDef& codecDef,
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const CodecInst& codecInst)
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{
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if (!_decoderInitialized)
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{
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// Todo:
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// log error
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return -1;
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}
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// Fill up the structure by calling
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// "SET_CODEC_PAR" & "SET_AMRWB_FUNCTION."
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// Then call NetEQ to add the codec to it's
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// database.
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SET_CODEC_PAR((codecDef), kDecoderAMRWB, codecInst.pltype,
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_decoderInstPtr, 16000);
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SET_AMRWB_FUNCTIONS((codecDef));
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return 0;
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}
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ACMGenericCodec*
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ACMAMRwb::CreateInstance(void)
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{
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return NULL;
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}
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WebRtc_Word16
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ACMAMRwb::InternalCreateEncoder()
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{
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return WebRtcAmrWb_CreateEnc(&_encoderInstPtr);
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}
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void
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ACMAMRwb::DestructEncoderSafe()
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{
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if(_encoderInstPtr != NULL)
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{
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WebRtcAmrWb_FreeEnc(_encoderInstPtr);
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_encoderInstPtr = NULL;
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}
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// there is no encoder set the following
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_encoderExist = false;
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_encoderInitialized = false;
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_encodingMode = -1; // invalid value
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_encodingRate = 0;
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}
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WebRtc_Word16
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ACMAMRwb::InternalCreateDecoder()
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{
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return WebRtcAmrWb_CreateDec(&_decoderInstPtr);
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}
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void
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ACMAMRwb::DestructDecoderSafe()
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{
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if(_decoderInstPtr != NULL)
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{
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WebRtcAmrWb_FreeDec(_decoderInstPtr);
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_decoderInstPtr = NULL;
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}
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// there is no encoder instance set the followings
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_decoderExist = false;
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_decoderInitialized = false;
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}
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WebRtc_Word16
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ACMAMRwb::SetBitRateSafe(
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const WebRtc_Word32 rate)
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{
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switch(rate)
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{
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case 7000:
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{
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_encodingMode = AMRWB_MODE_7k;
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_encodingRate = 7000;
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break;
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}
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case 9000:
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{
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_encodingMode = AMRWB_MODE_9k;
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_encodingRate = 9000;
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break;
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}
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case 12000:
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{
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_encodingMode = AMRWB_MODE_12k;
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_encodingRate = 12000;
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break;
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}
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case 14000:
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{
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_encodingMode = AMRWB_MODE_14k;
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_encodingRate = 14000;
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break;
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}
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case 16000:
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{
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_encodingMode = AMRWB_MODE_16k;
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_encodingRate = 16000;
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break;
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}
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case 18000:
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{
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_encodingMode = AMRWB_MODE_18k;
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_encodingRate = 18000;
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break;
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}
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case 20000:
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{
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_encodingMode = AMRWB_MODE_20k;
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_encodingRate = 20000;
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break;
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}
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case 23000:
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{
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_encodingMode = AMRWB_MODE_23k;
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_encodingRate = 23000;
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break;
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}
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case 24000:
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{
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_encodingMode = AMRWB_MODE_24k;
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_encodingRate = 24000;
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break;
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}
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default:
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{
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return -1;
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break;
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}
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}
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return 0;
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}
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void
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ACMAMRwb::InternalDestructEncoderInst(
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void* ptrInst)
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{
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if(ptrInst != NULL)
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{
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WebRtcAmrWb_FreeEnc((AMRWB_encinst_t_*)ptrInst);
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}
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return;
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}
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WebRtc_Word16
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ACMAMRwb::SetAMRwbEncoderPackingFormat(
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ACMAMRPackingFormat packingFormat)
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{
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if((packingFormat != AMRBandwidthEfficient) &&
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(packingFormat != AMROctetAlligned) &&
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(packingFormat != AMRFileStorage))
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"Invalid AMRwb encoder packing-format.");
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return -1;
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}
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else
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{
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if(WebRtcAmrWb_EncodeBitmode(_encoderInstPtr,
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packingFormat) < 0)
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{
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return -1;
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}
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else
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{
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_encoderPackingFormat = packingFormat;
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return 0;
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}
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}
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}
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ACMAMRPackingFormat
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ACMAMRwb::AMRwbEncoderPackingFormat() const
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{
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return _encoderPackingFormat;
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}
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WebRtc_Word16 ACMAMRwb::SetAMRwbDecoderPackingFormat(
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ACMAMRPackingFormat packingFormat)
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{
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if((packingFormat != AMRBandwidthEfficient) &&
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(packingFormat != AMROctetAlligned) &&
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(packingFormat != AMRFileStorage))
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"Invalid AMRwb decoder packing-format.");
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return -1;
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}
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else
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{
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if(WebRtcAmrWb_DecodeBitmode(_decoderInstPtr,
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packingFormat) < 0)
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{
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return -1;
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}
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else
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{
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_decoderPackingFormat = packingFormat;
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return 0;
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}
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}
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}
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ACMAMRPackingFormat
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ACMAMRwb::AMRwbDecoderPackingFormat() const
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{
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return _decoderPackingFormat;
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}
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|
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WebRtc_Word16
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ACMAMRwb::UnregisterFromNetEqSafe(
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ACMNetEQ* netEq,
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WebRtc_Word16 payloadType)
|
|
{
|
|
if(payloadType != _decoderParams.codecInstant.pltype)
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
|
|
"Cannot unregister codec %s given payload-type %d does not match \
|
|
the stored payload type",
|
|
_decoderParams.codecInstant.plname,
|
|
payloadType,
|
|
_decoderParams.codecInstant.pltype);
|
|
return -1;
|
|
}
|
|
return netEq->RemoveCodec(kDecoderAMRWB);
|
|
}
|
|
#endif
|
|
|
|
} // namespace webrtc
|