48af652ea5
ACM1 code is wrapped in namespace acm1. Inculde paths and define guards of ACM2 source codes are corrected. gypi file of ACM2 is changed so that ACM1 will later on depends on ACM2. BUG= R=andrew@webrtc.org Review URL: https://webrtc-codereview.appspot.com/2206004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4743 4adac7df-926f-26a2-2b94-8c16560cd09d
142 lines
4.2 KiB
C++
142 lines
4.2 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 "webrtc/modules/audio_coding/main/acm2/acm_ilbc.h"
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#ifdef WEBRTC_CODEC_ILBC
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#include "webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h"
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#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
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#include "webrtc/system_wrappers/interface/trace.h"
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#endif
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namespace webrtc {
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#ifndef WEBRTC_CODEC_ILBC
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ACMILBC::ACMILBC(int16_t /* codec_id */) : encoder_inst_ptr_(NULL) {}
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ACMILBC::~ACMILBC() { return; }
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int16_t ACMILBC::InternalEncode(uint8_t* /* bitstream */,
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int16_t* /* bitstream_len_byte */) {
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return -1;
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}
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int16_t ACMILBC::InternalInitEncoder(WebRtcACMCodecParams* /* codec_params */) {
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return -1;
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}
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ACMGenericCodec* ACMILBC::CreateInstance(void) { return NULL; }
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int16_t ACMILBC::InternalCreateEncoder() { return -1; }
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void ACMILBC::DestructEncoderSafe() { return; }
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void ACMILBC::InternalDestructEncoderInst(void* /* ptr_inst */) { return; }
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int16_t ACMILBC::SetBitRateSafe(const int32_t /* rate */) { return -1; }
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#else //===================== Actual Implementation =======================
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ACMILBC::ACMILBC(int16_t codec_id) : encoder_inst_ptr_(NULL) {
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codec_id_ = codec_id;
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return;
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}
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ACMILBC::~ACMILBC() {
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if (encoder_inst_ptr_ != NULL) {
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WebRtcIlbcfix_EncoderFree(encoder_inst_ptr_);
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encoder_inst_ptr_ = NULL;
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}
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return;
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}
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int16_t ACMILBC::InternalEncode(uint8_t* bitstream,
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int16_t* bitstream_len_byte) {
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*bitstream_len_byte = WebRtcIlbcfix_Encode(
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encoder_inst_ptr_, &in_audio_[in_audio_ix_read_], frame_len_smpl_,
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reinterpret_cast<int16_t*>(bitstream));
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if (*bitstream_len_byte < 0) {
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WEBRTC_TRACE(webrtc::kTraceError,
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webrtc::kTraceAudioCoding,
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unique_id_,
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"InternalEncode: error in encode for ILBC");
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return -1;
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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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in_audio_ix_read_ += frame_len_smpl_;
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return *bitstream_len_byte;
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}
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int16_t ACMILBC::InternalInitEncoder(WebRtcACMCodecParams* codec_params) {
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// initialize with a correct processing block length
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if ((160 == (codec_params->codec_inst).pacsize) ||
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(320 == (codec_params->codec_inst).pacsize)) {
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// processing block of 20ms
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return WebRtcIlbcfix_EncoderInit(encoder_inst_ptr_, 20);
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} else if ((240 == (codec_params->codec_inst).pacsize) ||
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(480 == (codec_params->codec_inst).pacsize)) {
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// processing block of 30ms
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return WebRtcIlbcfix_EncoderInit(encoder_inst_ptr_, 30);
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} else {
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_,
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"InternalInitEncoder: invalid processing block");
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return -1;
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}
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}
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ACMGenericCodec* ACMILBC::CreateInstance(void) { return NULL; }
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int16_t ACMILBC::InternalCreateEncoder() {
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if (WebRtcIlbcfix_EncoderCreate(&encoder_inst_ptr_) < 0) {
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WEBRTC_TRACE(webrtc::kTraceError,
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webrtc::kTraceAudioCoding,
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unique_id_,
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"InternalCreateEncoder: cannot create instance for ILBC "
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"encoder");
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return -1;
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}
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return 0;
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}
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void ACMILBC::DestructEncoderSafe() {
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encoder_initialized_ = false;
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encoder_exist_ = false;
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if (encoder_inst_ptr_ != NULL) {
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WebRtcIlbcfix_EncoderFree(encoder_inst_ptr_);
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encoder_inst_ptr_ = NULL;
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}
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}
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void ACMILBC::InternalDestructEncoderInst(void* ptr_inst) {
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if (ptr_inst != NULL) {
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WebRtcIlbcfix_EncoderFree(static_cast<iLBC_encinst_t_*>(ptr_inst));
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}
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return;
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}
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int16_t ACMILBC::SetBitRateSafe(const int32_t rate) {
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// Check that rate is valid. No need to store the value
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if (rate == 13300) {
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WebRtcIlbcfix_EncoderInit(encoder_inst_ptr_, 30);
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} else if (rate == 15200) {
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WebRtcIlbcfix_EncoderInit(encoder_inst_ptr_, 20);
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} else {
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return -1;
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}
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encoder_params_.codec_inst.rate = rate;
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return 0;
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}
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#endif
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} // namespace webrtc
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