audio_coding: remove "main" directory

webrtc/modules/audio_coding/main/acm2/rent_a_codec.cc

-/*
- *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/modules/audio_coding/main/acm2/rent_a_codec.h"
-
-#include "webrtc/base/logging.h"
-#include "webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.h"
-#include "webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h"
-#ifdef WEBRTC_CODEC_G722
-#include "webrtc/modules/audio_coding/codecs/g722/audio_encoder_g722.h"
-#endif
-#ifdef WEBRTC_CODEC_ILBC
-#include "webrtc/modules/audio_coding/codecs/ilbc/audio_encoder_ilbc.h"
-#endif
-#ifdef WEBRTC_CODEC_ISACFX
-#include "webrtc/modules/audio_coding/codecs/isac/fix/include/audio_decoder_isacfix.h"
-#include "webrtc/modules/audio_coding/codecs/isac/fix/include/audio_encoder_isacfix.h"
-#endif
-#ifdef WEBRTC_CODEC_ISAC
-#include "webrtc/modules/audio_coding/codecs/isac/main/include/audio_decoder_isac.h"
-#include "webrtc/modules/audio_coding/codecs/isac/main/include/audio_encoder_isac.h"
-#endif
-#ifdef WEBRTC_CODEC_OPUS
-#include "webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus.h"
-#endif
-#include "webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h"
-#ifdef WEBRTC_CODEC_RED
-#include "webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.h"
-#endif
-#include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h"
-#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
-
-namespace webrtc {
-namespace acm2 {
-
-rtc::Optional<RentACodec::CodecId> RentACodec::CodecIdByParams(
-    const char* payload_name,
-    int sampling_freq_hz,
-    int channels) {
-  return CodecIdFromIndex(
-      ACMCodecDB::CodecId(payload_name, sampling_freq_hz, channels));
-}
-
-rtc::Optional<CodecInst> RentACodec::CodecInstById(CodecId codec_id) {
-  rtc::Optional<int> mi = CodecIndexFromId(codec_id);
-  return mi ? rtc::Optional<CodecInst>(Database()[*mi])
-            : rtc::Optional<CodecInst>();
-}
-
-rtc::Optional<RentACodec::CodecId> RentACodec::CodecIdByInst(
-    const CodecInst& codec_inst) {
-  return CodecIdFromIndex(ACMCodecDB::CodecNumber(codec_inst));
-}
-
-rtc::Optional<CodecInst> RentACodec::CodecInstByParams(const char* payload_name,
-                                                       int sampling_freq_hz,
-                                                       int channels) {
-  rtc::Optional<CodecId> codec_id =
-      CodecIdByParams(payload_name, sampling_freq_hz, channels);
-  if (!codec_id)
-    return rtc::Optional<CodecInst>();
-  rtc::Optional<CodecInst> ci = CodecInstById(*codec_id);
-  RTC_DCHECK(ci);
-
-  // Keep the number of channels from the function call. For most codecs it
-  // will be the same value as in default codec settings, but not for all.
-  ci->channels = channels;
-
-  return ci;
-}
-
-bool RentACodec::IsCodecValid(const CodecInst& codec_inst) {
-  return ACMCodecDB::CodecNumber(codec_inst) >= 0;
-}
-
-rtc::Optional<bool> RentACodec::IsSupportedNumChannels(CodecId codec_id,
-                                                       int num_channels) {
-  auto i = CodecIndexFromId(codec_id);
-  return i ? rtc::Optional<bool>(
-                 ACMCodecDB::codec_settings_[*i].channel_support >=
-                 num_channels)
-           : rtc::Optional<bool>();
-}
-
-rtc::ArrayView<const CodecInst> RentACodec::Database() {
-  return rtc::ArrayView<const CodecInst>(ACMCodecDB::database_,
-                                         NumberOfCodecs());
-}
-
-rtc::Optional<NetEqDecoder> RentACodec::NetEqDecoderFromCodecId(
-    CodecId codec_id,
-    int num_channels) {
-  rtc::Optional<int> i = CodecIndexFromId(codec_id);
-  if (!i)
-    return rtc::Optional<NetEqDecoder>();
-  const NetEqDecoder ned = ACMCodecDB::neteq_decoders_[*i];
-  return rtc::Optional<NetEqDecoder>(
-      (ned == NetEqDecoder::kDecoderOpus && num_channels == 2)
-          ? NetEqDecoder::kDecoderOpus_2ch
-          : ned);
-}
-
-RentACodec::RegistrationResult RentACodec::RegisterCngPayloadType(
-    std::map<int, int>* pt_map,
-    const CodecInst& codec_inst) {
-  if (STR_CASE_CMP(codec_inst.plname, "CN") != 0)
-    return RegistrationResult::kSkip;
-  switch (codec_inst.plfreq) {
-    case 8000:
-    case 16000:
-    case 32000:
-    case 48000:
-      (*pt_map)[codec_inst.plfreq] = codec_inst.pltype;
-      return RegistrationResult::kOk;
-    default:
-      return RegistrationResult::kBadFreq;
-  }
-}
-
-RentACodec::RegistrationResult RentACodec::RegisterRedPayloadType(
-    std::map<int, int>* pt_map,
-    const CodecInst& codec_inst) {
-  if (STR_CASE_CMP(codec_inst.plname, "RED") != 0)
-    return RegistrationResult::kSkip;
-  switch (codec_inst.plfreq) {
-    case 8000:
-      (*pt_map)[codec_inst.plfreq] = codec_inst.pltype;
-      return RegistrationResult::kOk;
-    default:
-      return RegistrationResult::kBadFreq;
-  }
-}
-
-namespace {
-
-// Returns a new speech encoder, or null on error.
-// TODO(kwiberg): Don't handle errors here (bug 5033)
-rtc::scoped_ptr<AudioEncoder> CreateEncoder(
-    const CodecInst& speech_inst,
-    LockedIsacBandwidthInfo* bwinfo) {
-#if defined(WEBRTC_CODEC_ISACFX)
-  if (STR_CASE_CMP(speech_inst.plname, "isac") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderIsacFix(speech_inst, bwinfo));
-#endif
-#if defined(WEBRTC_CODEC_ISAC)
-  if (STR_CASE_CMP(speech_inst.plname, "isac") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderIsac(speech_inst, bwinfo));
-#endif
-#ifdef WEBRTC_CODEC_OPUS
-  if (STR_CASE_CMP(speech_inst.plname, "opus") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderOpus(speech_inst));
-#endif
-  if (STR_CASE_CMP(speech_inst.plname, "pcmu") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderPcmU(speech_inst));
-  if (STR_CASE_CMP(speech_inst.plname, "pcma") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderPcmA(speech_inst));
-  if (STR_CASE_CMP(speech_inst.plname, "l16") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderPcm16B(speech_inst));
-#ifdef WEBRTC_CODEC_ILBC
-  if (STR_CASE_CMP(speech_inst.plname, "ilbc") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderIlbc(speech_inst));
-#endif
-#ifdef WEBRTC_CODEC_G722
-  if (STR_CASE_CMP(speech_inst.plname, "g722") == 0)
-    return rtc_make_scoped_ptr(new AudioEncoderG722(speech_inst));
-#endif
-  LOG_F(LS_ERROR) << "Could not create encoder of type " << speech_inst.plname;
-  return rtc::scoped_ptr<AudioEncoder>();
-}
-
-rtc::scoped_ptr<AudioEncoder> CreateRedEncoder(AudioEncoder* encoder,
-                                               int red_payload_type) {
-#ifdef WEBRTC_CODEC_RED
-  AudioEncoderCopyRed::Config config;
-  config.payload_type = red_payload_type;
-  config.speech_encoder = encoder;
-  return rtc::scoped_ptr<AudioEncoder>(new AudioEncoderCopyRed(config));
-#else
-  return rtc::scoped_ptr<AudioEncoder>();
-#endif
-}
-
-rtc::scoped_ptr<AudioEncoder> CreateCngEncoder(AudioEncoder* encoder,
-                                               int payload_type,
-                                               ACMVADMode vad_mode) {
-  AudioEncoderCng::Config config;
-  config.num_channels = encoder->NumChannels();
-  config.payload_type = payload_type;
-  config.speech_encoder = encoder;
-  switch (vad_mode) {
-    case VADNormal:
-      config.vad_mode = Vad::kVadNormal;
-      break;
-    case VADLowBitrate:
-      config.vad_mode = Vad::kVadLowBitrate;
-      break;
-    case VADAggr:
-      config.vad_mode = Vad::kVadAggressive;
-      break;
-    case VADVeryAggr:
-      config.vad_mode = Vad::kVadVeryAggressive;
-      break;
-    default:
-      FATAL();
-  }
-  return rtc::scoped_ptr<AudioEncoder>(new AudioEncoderCng(config));
-}
-
-rtc::scoped_ptr<AudioDecoder> CreateIsacDecoder(
-    LockedIsacBandwidthInfo* bwinfo) {
-#if defined(WEBRTC_CODEC_ISACFX)
-  return rtc_make_scoped_ptr(new AudioDecoderIsacFix(bwinfo));
-#elif defined(WEBRTC_CODEC_ISAC)
-  return rtc_make_scoped_ptr(new AudioDecoderIsac(bwinfo));
-#else
-  FATAL() << "iSAC is not supported.";
-  return rtc::scoped_ptr<AudioDecoder>();
-#endif
-}
-
-}  // namespace
-
-RentACodec::RentACodec() = default;
-RentACodec::~RentACodec() = default;
-
-AudioEncoder* RentACodec::RentEncoder(const CodecInst& codec_inst) {
-  rtc::scoped_ptr<AudioEncoder> enc =
-      CreateEncoder(codec_inst, &isac_bandwidth_info_);
-  if (!enc)
-    return nullptr;
-  speech_encoder_ = enc.Pass();
-  return speech_encoder_.get();
-}
-
-RentACodec::StackParameters::StackParameters() {
-  // Register the default payload types for RED and CNG.
-  for (const CodecInst& ci : RentACodec::Database()) {
-    RentACodec::RegisterCngPayloadType(&cng_payload_types, ci);
-    RentACodec::RegisterRedPayloadType(&red_payload_types, ci);
-  }
-}
-
-RentACodec::StackParameters::~StackParameters() = default;
-
-AudioEncoder* RentACodec::RentEncoderStack(AudioEncoder* speech_encoder,
-                                           StackParameters* param) {
-  RTC_DCHECK(speech_encoder);
-
-  if (param->use_codec_fec) {
-    // Switch FEC on. On failure, remember that FEC is off.
-    if (!speech_encoder->SetFec(true))
-      param->use_codec_fec = false;
-  } else {
-    // Switch FEC off. This shouldn't fail.
-    const bool success = speech_encoder->SetFec(false);
-    RTC_DCHECK(success);
-  }
-
-  auto pt = [&speech_encoder](const std::map<int, int>& m) {
-    auto it = m.find(speech_encoder->SampleRateHz());
-    return it == m.end() ? rtc::Optional<int>()
-                         : rtc::Optional<int>(it->second);
-  };
-  auto cng_pt = pt(param->cng_payload_types);
-  param->use_cng =
-      param->use_cng && cng_pt && speech_encoder->NumChannels() == 1;
-  auto red_pt = pt(param->red_payload_types);
-  param->use_red = param->use_red && red_pt;
-
-  if (param->use_cng || param->use_red) {
-    // The RED and CNG encoders need to be in sync with the speech encoder, so
-    // reset the latter to ensure its buffer is empty.
-    speech_encoder->Reset();
-  }
-  encoder_stack_ = speech_encoder;
-  if (param->use_red) {
-    red_encoder_ = CreateRedEncoder(encoder_stack_, *red_pt);
-    if (red_encoder_)
-      encoder_stack_ = red_encoder_.get();
-  } else {
-    red_encoder_.reset();
-  }
-  if (param->use_cng) {
-    cng_encoder_ = CreateCngEncoder(encoder_stack_, *cng_pt, param->vad_mode);
-    encoder_stack_ = cng_encoder_.get();
-  } else {
-    cng_encoder_.reset();
-  }
-  return encoder_stack_;
-}
-
-AudioDecoder* RentACodec::RentIsacDecoder() {
-  if (!isac_decoder_)
-    isac_decoder_ = CreateIsacDecoder(&isac_bandwidth_info_);
-  return isac_decoder_.get();
-}
-
-}  // namespace acm2
-}  // namespace webrtc