| /* |
| * Copyright (c) 2012 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/interface/audio_coding_module.h" |
| |
| #include "webrtc/base/checks.h" |
| #include "webrtc/common_types.h" |
| #include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h" |
| #include "webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.h" |
| #include "webrtc/system_wrappers/interface/clock.h" |
| #include "webrtc/system_wrappers/interface/trace.h" |
| |
| namespace webrtc { |
| |
| // Create module |
| AudioCodingModule* AudioCodingModule::Create(int id) { |
| Config config; |
| config.id = id; |
| config.clock = Clock::GetRealTimeClock(); |
| return Create(config); |
| } |
| |
| AudioCodingModule* AudioCodingModule::Create(int id, Clock* clock) { |
| Config config; |
| config.id = id; |
| config.clock = clock; |
| return Create(config); |
| } |
| |
| AudioCodingModule* AudioCodingModule::Create(const Config& config) { |
| return new acm2::AudioCodingModuleImpl(config); |
| } |
| |
| // Get number of supported codecs |
| int AudioCodingModule::NumberOfCodecs() { |
| return acm2::ACMCodecDB::kNumCodecs; |
| } |
| |
| // Get supported codec parameters with id |
| int AudioCodingModule::Codec(int list_id, CodecInst* codec) { |
| // Get the codec settings for the codec with the given list ID |
| return acm2::ACMCodecDB::Codec(list_id, codec); |
| } |
| |
| // Get supported codec parameters with name, frequency and number of channels. |
| int AudioCodingModule::Codec(const char* payload_name, |
| CodecInst* codec, |
| int sampling_freq_hz, |
| int channels) { |
| int codec_id; |
| |
| // Get the id of the codec from the database. |
| codec_id = acm2::ACMCodecDB::CodecId( |
| payload_name, sampling_freq_hz, channels); |
| if (codec_id < 0) { |
| // We couldn't find a matching codec, set the parameters to unacceptable |
| // values and return. |
| codec->plname[0] = '\0'; |
| codec->pltype = -1; |
| codec->pacsize = 0; |
| codec->rate = 0; |
| codec->plfreq = 0; |
| return -1; |
| } |
| |
| // Get default codec settings. |
| acm2::ACMCodecDB::Codec(codec_id, codec); |
| |
| // 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. |
| codec->channels = channels; |
| |
| return 0; |
| } |
| |
| // Get supported codec Index with name, frequency and number of channels. |
| int AudioCodingModule::Codec(const char* payload_name, |
| int sampling_freq_hz, |
| int channels) { |
| return acm2::ACMCodecDB::CodecId(payload_name, sampling_freq_hz, channels); |
| } |
| |
| // Checks the validity of the parameters of the given codec |
| bool AudioCodingModule::IsCodecValid(const CodecInst& codec) { |
| int codec_number = acm2::ACMCodecDB::CodecNumber(codec); |
| |
| if (codec_number < 0) { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, -1, |
| "Invalid codec setting"); |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| AudioCoding::Config::Config() |
| : neteq_config(), |
| clock(Clock::GetRealTimeClock()), |
| transport(nullptr), |
| vad_callback(nullptr), |
| initial_playout_delay_ms(0), |
| playout_channels(1), |
| playout_frequency_hz(32000) { |
| } |
| |
| AudioCoding* AudioCoding::Create(const Config& config) { |
| return new AudioCodingImpl(config); |
| } |
| |
| } // namespace webrtc |