14b43beb7c
TBR=niklas.enbom@webrtc.org Review URL: https://webrtc-codereview.appspot.com/915006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@2963 4adac7df-926f-26a2-2b94-8c16560cd09d
425 lines
11 KiB
C++
425 lines
11 KiB
C++
/*
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* Copyright (c) 2012 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_amr.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_AMR
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// NOTE! GSM AMR is not included in the open-source package. The following
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// interface file is needed:
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//
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// /modules/audio_coding/codecs/amr/main/interface/amr_interface.h
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//
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// The API in the header file should match the one below.
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//
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// int16_t WebRtcAmr_CreateEnc(AMR_encinst_t_** encInst);
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// int16_t WebRtcAmr_CreateDec(AMR_decinst_t_** decInst);
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// int16_t WebRtcAmr_FreeEnc(AMR_encinst_t_* encInst);
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// int16_t WebRtcAmr_FreeDec(AMR_decinst_t_* decInst);
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// int16_t WebRtcAmr_Encode(AMR_encinst_t_* encInst,
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// int16_t* input,
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// int16_t len,
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// int16_t*output,
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// int16_t mode);
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// int16_t WebRtcAmr_EncoderInit(AMR_encinst_t_* encInst,
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// int16_t dtxMode);
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// int16_t WebRtcAmr_EncodeBitmode(AMR_encinst_t_* encInst,
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// int format);
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// int16_t WebRtcAmr_Decode(AMR_decinst_t_* decInst);
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// int16_t WebRtcAmr_DecodePlc(AMR_decinst_t_* decInst);
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// int16_t WebRtcAmr_DecoderInit(AMR_decinst_t_* decInst);
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// int16_t WebRtcAmr_DecodeBitmode(AMR_decinst_t_* decInst,
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// int format);
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#include "amr_interface.h"
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#endif
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namespace webrtc {
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#ifndef WEBRTC_CODEC_AMR
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ACMAMR::ACMAMR(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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_encoderPackingFormat(AMRBandwidthEfficient),
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_decoderPackingFormat(AMRBandwidthEfficient) {
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return;
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}
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ACMAMR::~ACMAMR() {
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return;
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}
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WebRtc_Word16 ACMAMR::InternalEncode(WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16* /* bitStreamLenByte */) {
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return -1;
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}
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WebRtc_Word16 ACMAMR::DecodeSafe(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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return -1;
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}
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WebRtc_Word16 ACMAMR::EnableDTX() {
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return -1;
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}
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WebRtc_Word16 ACMAMR::DisableDTX() {
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return -1;
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}
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WebRtc_Word16 ACMAMR::InternalInitEncoder(
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WebRtcACMCodecParams* /* codecParams */) {
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return -1;
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}
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WebRtc_Word16 ACMAMR::InternalInitDecoder(
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WebRtcACMCodecParams* /* codecParams */) {
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return -1;
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}
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WebRtc_Word32 ACMAMR::CodecDef(WebRtcNetEQ_CodecDef& /* codecDef */,
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const CodecInst& /* codecInst */) {
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return -1;
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}
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ACMGenericCodec* ACMAMR::CreateInstance(void) {
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return NULL;
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}
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WebRtc_Word16 ACMAMR::InternalCreateEncoder() {
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return -1;
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}
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void ACMAMR::DestructEncoderSafe() {
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return;
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}
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WebRtc_Word16 ACMAMR::InternalCreateDecoder() {
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return -1;
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}
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void ACMAMR::DestructDecoderSafe() {
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return;
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}
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WebRtc_Word16 ACMAMR::SetBitRateSafe(const WebRtc_Word32 /* rate */) {
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return -1;
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}
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void ACMAMR::InternalDestructEncoderInst(void* /* ptrInst */) {
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return;
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}
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WebRtc_Word16 ACMAMR::SetAMREncoderPackingFormat(
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ACMAMRPackingFormat /* packingFormat */) {
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return -1;
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}
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ACMAMRPackingFormat ACMAMR::AMREncoderPackingFormat() const {
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return AMRUndefined;
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}
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WebRtc_Word16 ACMAMR::SetAMRDecoderPackingFormat(
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ACMAMRPackingFormat /* packingFormat */) {
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return -1;
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}
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ACMAMRPackingFormat ACMAMR::AMRDecoderPackingFormat() const {
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return AMRUndefined;
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}
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#else //===================== Actual Implementation =======================
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#define WEBRTC_AMR_MR475 0
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#define WEBRTC_AMR_MR515 1
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#define WEBRTC_AMR_MR59 2
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#define WEBRTC_AMR_MR67 3
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#define WEBRTC_AMR_MR74 4
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#define WEBRTC_AMR_MR795 5
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#define WEBRTC_AMR_MR102 6
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#define WEBRTC_AMR_MR122 7
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ACMAMR::ACMAMR(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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_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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ACMAMR::~ACMAMR() {
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if (_encoderInstPtr != NULL) {
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WebRtcAmr_FreeEnc(_encoderInstPtr);
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_encoderInstPtr = NULL;
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}
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if (_decoderInstPtr != NULL) {
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WebRtcAmr_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 ACMAMR::InternalEncode(WebRtc_UWord8* bitStream,
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WebRtc_Word16* bitStreamLenByte) {
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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 < WEBRTC_AMR_MR475) ||
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(_encodingMode > WEBRTC_AMR_MR122)) {
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*bitStreamLenByte = 0;
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return -1;
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}
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*bitStreamLenByte = WebRtcAmr_Encode(_encoderInstPtr,
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&_inAudio[_inAudioIxRead],
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_frameLenSmpl,
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(WebRtc_Word16*) bitStream,
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_encodingMode);
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// Update VAD, if internal DTX is used
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if (_hasInternalDTX && _dtxEnabled) {
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if (*bitStreamLenByte <= (7 * _frameLenSmpl / 160)) {
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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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_vadLabel[n] = vadDecision;
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}
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}
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// increment the read index
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_inAudioIxRead += _frameLenSmpl;
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return *bitStreamLenByte;
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}
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WebRtc_Word16 ACMAMR::DecodeSafe(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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return 0;
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}
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WebRtc_Word16 ACMAMR::EnableDTX() {
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if (_dtxEnabled) {
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return 0;
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} else if (_encoderExist) { // check if encoder exist
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// enable DTX
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if (WebRtcAmr_EncoderInit(_encoderInstPtr, 1) < 0) {
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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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} else {
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return -1;
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}
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}
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WebRtc_Word16 ACMAMR::DisableDTX() {
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if (!_dtxEnabled) {
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return 0;
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} else if (_encoderExist) { // check if encoder exist
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// disable DTX
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if (WebRtcAmr_EncoderInit(_encoderInstPtr, 0) < 0) {
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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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} else {
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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 ACMAMR::InternalInitEncoder(WebRtcACMCodecParams* codecParams) {
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WebRtc_Word16 status = SetBitRateSafe((codecParams->codecInstant).rate);
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status += (WebRtcAmr_EncoderInit(
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_encoderInstPtr, ((codecParams->enableDTX) ? 1 : 0)) < 0) ? -1 : 0;
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status += (WebRtcAmr_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 ACMAMR::InternalInitDecoder(
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WebRtcACMCodecParams* /* codecParams */) {
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WebRtc_Word16 status =
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((WebRtcAmr_DecoderInit(_decoderInstPtr) < 0) ? -1 : 0);
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status += WebRtcAmr_DecodeBitmode(_decoderInstPtr, _decoderPackingFormat);
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return (status < 0) ? -1 : 0;
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}
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WebRtc_Word32 ACMAMR::CodecDef(WebRtcNetEQ_CodecDef& codecDef,
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const CodecInst& codecInst) {
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if (!_decoderInitialized) {
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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_AMR_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), kDecoderAMR, codecInst.pltype, _decoderInstPtr,
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8000);
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SET_AMR_FUNCTIONS((codecDef));
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return 0;
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}
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ACMGenericCodec* ACMAMR::CreateInstance(void) {
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return NULL;
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}
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WebRtc_Word16 ACMAMR::InternalCreateEncoder() {
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return WebRtcAmr_CreateEnc(&_encoderInstPtr);
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}
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void ACMAMR::DestructEncoderSafe() {
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if (_encoderInstPtr != NULL) {
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WebRtcAmr_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; // invalid value
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}
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WebRtc_Word16 ACMAMR::InternalCreateDecoder() {
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return WebRtcAmr_CreateDec(&_decoderInstPtr);
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}
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void ACMAMR::DestructDecoderSafe() {
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if (_decoderInstPtr != NULL) {
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WebRtcAmr_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 ACMAMR::SetBitRateSafe(const WebRtc_Word32 rate) {
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switch (rate) {
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case 4750: {
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_encodingMode = WEBRTC_AMR_MR475;
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_encodingRate = 4750;
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break;
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}
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case 5150: {
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_encodingMode = WEBRTC_AMR_MR515;
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_encodingRate = 5150;
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break;
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}
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case 5900: {
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_encodingMode = WEBRTC_AMR_MR59;
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_encodingRate = 5900;
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break;
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}
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case 6700: {
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_encodingMode = WEBRTC_AMR_MR67;
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_encodingRate = 6700;
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break;
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}
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case 7400: {
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_encodingMode = WEBRTC_AMR_MR74;
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_encodingRate = 7400;
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break;
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}
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case 7950: {
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_encodingMode = WEBRTC_AMR_MR795;
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_encodingRate = 7950;
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break;
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}
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case 10200: {
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_encodingMode = WEBRTC_AMR_MR102;
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_encodingRate = 10200;
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break;
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}
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case 12200: {
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_encodingMode = WEBRTC_AMR_MR122;
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_encodingRate = 12200;
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break;
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}
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default: {
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return -1;
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}
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}
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return 0;
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}
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void ACMAMR::InternalDestructEncoderInst(void* ptrInst) {
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// Free the memory where ptrInst is pointing to
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if (ptrInst != NULL) {
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WebRtcAmr_FreeEnc(reinterpret_cast<AMR_encinst_t_*>(ptrInst));
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}
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return;
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}
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WebRtc_Word16 ACMAMR::SetAMREncoderPackingFormat(
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ACMAMRPackingFormat packingFormat) {
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if ((packingFormat != AMRBandwidthEfficient) &&
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(packingFormat != AMROctetAlligned) &&
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(packingFormat != AMRFileStorage)) {
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"Invalid AMR Encoder packing-format.");
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return -1;
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} else {
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if (WebRtcAmr_EncodeBitmode(_encoderInstPtr, packingFormat) < 0) {
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return -1;
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} else {
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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 ACMAMR::AMREncoderPackingFormat() const {
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return _encoderPackingFormat;
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}
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WebRtc_Word16 ACMAMR::SetAMRDecoderPackingFormat(
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ACMAMRPackingFormat packingFormat) {
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if ((packingFormat != AMRBandwidthEfficient) &&
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(packingFormat != AMROctetAlligned) &&
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(packingFormat != AMRFileStorage)) {
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"Invalid AMR decoder packing-format.");
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return -1;
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} else {
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if (WebRtcAmr_DecodeBitmode(_decoderInstPtr, packingFormat) < 0) {
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return -1;
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} else {
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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 ACMAMR::AMRDecoderPackingFormat() const {
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return _decoderPackingFormat;
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}
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#endif
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}
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