henrik.lundin@webrtc.org | 9a40081 | 2013-01-29 12:09:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "webrtc/modules/audio_coding/neteq4/decoder_database.h" |
| 12 | |
| 13 | #include <assert.h> |
| 14 | #include <utility> // pair |
| 15 | |
| 16 | #include "webrtc/modules/audio_coding/neteq4/interface/audio_decoder.h" |
| 17 | |
| 18 | namespace webrtc { |
| 19 | |
pbos@webrtc.org | dd1b19d | 2013-07-31 15:54:00 +0000 | [diff] [blame] | 20 | DecoderDatabase::DecoderDatabase() |
| 21 | : active_decoder_(-1), active_cng_decoder_(-1) {} |
| 22 | |
| 23 | DecoderDatabase::~DecoderDatabase() {} |
| 24 | |
henrik.lundin@webrtc.org | 9a40081 | 2013-01-29 12:09:21 +0000 | [diff] [blame] | 25 | DecoderDatabase::DecoderInfo::~DecoderInfo() { |
| 26 | if (!external) delete decoder; |
| 27 | } |
| 28 | |
pbos@webrtc.org | dd1b19d | 2013-07-31 15:54:00 +0000 | [diff] [blame] | 29 | bool DecoderDatabase::Empty() const { return decoders_.empty(); } |
| 30 | |
| 31 | int DecoderDatabase::Size() const { return decoders_.size(); } |
| 32 | |
henrik.lundin@webrtc.org | 9a40081 | 2013-01-29 12:09:21 +0000 | [diff] [blame] | 33 | void DecoderDatabase::Reset() { |
| 34 | decoders_.clear(); |
| 35 | active_decoder_ = -1; |
| 36 | active_cng_decoder_ = -1; |
| 37 | } |
| 38 | |
| 39 | int DecoderDatabase::RegisterPayload(uint8_t rtp_payload_type, |
| 40 | NetEqDecoder codec_type) { |
| 41 | if (rtp_payload_type > kMaxRtpPayloadType) { |
| 42 | return kInvalidRtpPayloadType; |
| 43 | } |
| 44 | if (!AudioDecoder::CodecSupported(codec_type)) { |
| 45 | return kCodecNotSupported; |
| 46 | } |
| 47 | int fs_hz = AudioDecoder::CodecSampleRateHz(codec_type); |
| 48 | std::pair<DecoderMap::iterator, bool> ret; |
| 49 | DecoderInfo info(codec_type, fs_hz, NULL, false); |
| 50 | ret = decoders_.insert(std::make_pair(rtp_payload_type, info)); |
| 51 | if (ret.second == false) { |
| 52 | // Database already contains a decoder with type |rtp_payload_type|. |
| 53 | return kDecoderExists; |
| 54 | } |
| 55 | return kOK; |
| 56 | } |
| 57 | |
| 58 | int DecoderDatabase::InsertExternal(uint8_t rtp_payload_type, |
| 59 | NetEqDecoder codec_type, |
| 60 | int fs_hz, |
| 61 | AudioDecoder* decoder) { |
| 62 | if (rtp_payload_type > 0x7F) { |
| 63 | return kInvalidRtpPayloadType; |
| 64 | } |
| 65 | if (!AudioDecoder::CodecSupported(codec_type)) { |
| 66 | return kCodecNotSupported; |
| 67 | } |
| 68 | if (fs_hz != 8000 && fs_hz != 16000 && fs_hz != 32000 && fs_hz != 48000) { |
| 69 | return kInvalidSampleRate; |
| 70 | } |
| 71 | if (!decoder) { |
| 72 | return kInvalidPointer; |
| 73 | } |
| 74 | decoder->Init(); |
| 75 | std::pair<DecoderMap::iterator, bool> ret; |
| 76 | DecoderInfo info(codec_type, fs_hz, decoder, true); |
| 77 | ret = decoders_.insert( |
| 78 | std::pair<uint8_t, DecoderInfo>(rtp_payload_type, info)); |
| 79 | if (ret.second == false) { |
| 80 | // Database already contains a decoder with type |rtp_payload_type|. |
| 81 | return kDecoderExists; |
| 82 | } |
| 83 | return kOK; |
| 84 | } |
| 85 | |
| 86 | int DecoderDatabase::Remove(uint8_t rtp_payload_type) { |
| 87 | if (decoders_.erase(rtp_payload_type) == 0) { |
| 88 | // No decoder with that |rtp_payload_type|. |
| 89 | return kDecoderNotFound; |
| 90 | } |
| 91 | if (active_decoder_ == rtp_payload_type) { |
| 92 | active_decoder_ = -1; // No active decoder. |
| 93 | } |
| 94 | if (active_cng_decoder_ == rtp_payload_type) { |
| 95 | active_cng_decoder_ = -1; // No active CNG decoder. |
| 96 | } |
| 97 | return kOK; |
| 98 | } |
| 99 | |
| 100 | const DecoderDatabase::DecoderInfo* DecoderDatabase::GetDecoderInfo( |
| 101 | uint8_t rtp_payload_type) const { |
| 102 | DecoderMap::const_iterator it = decoders_.find(rtp_payload_type); |
| 103 | if (it == decoders_.end()) { |
| 104 | // Decoder not found. |
| 105 | return NULL; |
| 106 | } |
| 107 | return &(*it).second; |
| 108 | } |
| 109 | |
| 110 | uint8_t DecoderDatabase::GetRtpPayloadType( |
| 111 | NetEqDecoder codec_type) const { |
| 112 | DecoderMap::const_iterator it; |
| 113 | for (it = decoders_.begin(); it != decoders_.end(); ++it) { |
| 114 | if ((*it).second.codec_type == codec_type) { |
| 115 | // Match found. |
| 116 | return (*it).first; |
| 117 | } |
| 118 | } |
| 119 | // No match. |
| 120 | return kRtpPayloadTypeError; |
| 121 | } |
| 122 | |
| 123 | AudioDecoder* DecoderDatabase::GetDecoder(uint8_t rtp_payload_type) { |
| 124 | if (IsDtmf(rtp_payload_type) || IsRed(rtp_payload_type)) { |
| 125 | // These are not real decoders. |
| 126 | return NULL; |
| 127 | } |
| 128 | DecoderMap::iterator it = decoders_.find(rtp_payload_type); |
| 129 | if (it == decoders_.end()) { |
| 130 | // Decoder not found. |
| 131 | return NULL; |
| 132 | } |
| 133 | DecoderInfo* info = &(*it).second; |
| 134 | if (!info->decoder) { |
| 135 | // Create the decoder object. |
| 136 | AudioDecoder* decoder = AudioDecoder::CreateAudioDecoder(info->codec_type); |
| 137 | assert(decoder); // Should not be able to have an unsupported codec here. |
| 138 | info->decoder = decoder; |
| 139 | info->decoder->Init(); |
| 140 | } |
| 141 | return info->decoder; |
| 142 | } |
| 143 | |
| 144 | bool DecoderDatabase::IsType(uint8_t rtp_payload_type, |
| 145 | NetEqDecoder codec_type) const { |
| 146 | DecoderMap::const_iterator it = decoders_.find(rtp_payload_type); |
| 147 | if (it == decoders_.end()) { |
| 148 | // Decoder not found. |
| 149 | return false; |
| 150 | } |
| 151 | return ((*it).second.codec_type == codec_type); |
| 152 | } |
| 153 | |
| 154 | bool DecoderDatabase::IsComfortNoise(uint8_t rtp_payload_type) const { |
| 155 | if (IsType(rtp_payload_type, kDecoderCNGnb) || |
| 156 | IsType(rtp_payload_type, kDecoderCNGwb) || |
| 157 | IsType(rtp_payload_type, kDecoderCNGswb32kHz) || |
| 158 | IsType(rtp_payload_type, kDecoderCNGswb48kHz)) { |
| 159 | return true; |
| 160 | } else { |
| 161 | return false; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | bool DecoderDatabase::IsDtmf(uint8_t rtp_payload_type) const { |
| 166 | return IsType(rtp_payload_type, kDecoderAVT); |
| 167 | } |
| 168 | |
| 169 | bool DecoderDatabase::IsRed(uint8_t rtp_payload_type) const { |
| 170 | return IsType(rtp_payload_type, kDecoderRED); |
| 171 | } |
| 172 | |
| 173 | int DecoderDatabase::SetActiveDecoder(uint8_t rtp_payload_type, |
| 174 | bool* new_decoder) { |
| 175 | // Check that |rtp_payload_type| exists in the database. |
| 176 | DecoderMap::const_iterator it = decoders_.find(rtp_payload_type); |
| 177 | if (it == decoders_.end()) { |
| 178 | // Decoder not found. |
| 179 | return kDecoderNotFound; |
| 180 | } |
| 181 | assert(new_decoder); |
| 182 | *new_decoder = false; |
| 183 | if (active_decoder_ < 0) { |
| 184 | // This is the first active decoder. |
| 185 | *new_decoder = true; |
| 186 | } else if (active_decoder_ != rtp_payload_type) { |
| 187 | // Moving from one active decoder to another. Delete the first one. |
| 188 | DecoderMap::iterator it = decoders_.find(active_decoder_); |
| 189 | if (it == decoders_.end()) { |
| 190 | // Decoder not found. This should not be possible. |
| 191 | assert(false); |
| 192 | return kDecoderNotFound; |
| 193 | } |
| 194 | if (!(*it).second.external) { |
| 195 | // Delete the AudioDecoder object, unless it is an externally created |
| 196 | // decoder. |
| 197 | delete (*it).second.decoder; |
| 198 | (*it).second.decoder = NULL; |
| 199 | } |
| 200 | *new_decoder = true; |
| 201 | } |
| 202 | active_decoder_ = rtp_payload_type; |
| 203 | return kOK; |
| 204 | } |
| 205 | |
| 206 | AudioDecoder* DecoderDatabase::GetActiveDecoder() { |
| 207 | if (active_decoder_ < 0) { |
| 208 | // No active decoder. |
| 209 | return NULL; |
| 210 | } |
| 211 | return GetDecoder(active_decoder_); |
| 212 | } |
| 213 | |
| 214 | int DecoderDatabase::SetActiveCngDecoder(uint8_t rtp_payload_type) { |
| 215 | // Check that |rtp_payload_type| exists in the database. |
| 216 | DecoderMap::const_iterator it = decoders_.find(rtp_payload_type); |
| 217 | if (it == decoders_.end()) { |
| 218 | // Decoder not found. |
| 219 | return kDecoderNotFound; |
| 220 | } |
| 221 | if (active_cng_decoder_ >= 0 && active_cng_decoder_ != rtp_payload_type) { |
| 222 | // Moving from one active CNG decoder to another. Delete the first one. |
| 223 | DecoderMap::iterator it = decoders_.find(active_cng_decoder_); |
| 224 | if (it == decoders_.end()) { |
| 225 | // Decoder not found. This should not be possible. |
| 226 | assert(false); |
| 227 | return kDecoderNotFound; |
| 228 | } |
| 229 | if (!(*it).second.external) { |
| 230 | // Delete the AudioDecoder object, unless it is an externally created |
| 231 | // decoder. |
| 232 | delete (*it).second.decoder; |
| 233 | (*it).second.decoder = NULL; |
| 234 | } |
| 235 | } |
| 236 | active_cng_decoder_ = rtp_payload_type; |
| 237 | return kOK; |
| 238 | } |
| 239 | |
| 240 | AudioDecoder* DecoderDatabase::GetActiveCngDecoder() { |
| 241 | if (active_cng_decoder_ < 0) { |
| 242 | // No active CNG decoder. |
| 243 | return NULL; |
| 244 | } |
| 245 | return GetDecoder(active_cng_decoder_); |
| 246 | } |
| 247 | |
| 248 | int DecoderDatabase::CheckPayloadTypes(const PacketList& packet_list) const { |
| 249 | PacketList::const_iterator it; |
| 250 | for (it = packet_list.begin(); it != packet_list.end(); ++it) { |
| 251 | if (decoders_.find((*it)->header.payloadType) == decoders_.end()) { |
| 252 | // Payload type is not found. |
| 253 | return kDecoderNotFound; |
| 254 | } |
| 255 | } |
| 256 | return kOK; |
| 257 | } |
| 258 | |
| 259 | |
| 260 | } // namespace webrtc |