| /* |
| * Copyright (c) 2017 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 "api/audio_codecs/g722/audio_decoder_g722.h" |
| |
| #include <memory> |
| #include <optional> |
| #include <vector> |
| |
| #include "absl/strings/match.h" |
| #include "api/audio_codecs/audio_codec_pair_id.h" |
| #include "api/audio_codecs/audio_decoder.h" |
| #include "api/audio_codecs/audio_format.h" |
| #include "api/field_trials_view.h" |
| #include "modules/audio_coding/codecs/g722/audio_decoder_g722.h" |
| #include "rtc_base/checks.h" |
| #include "rtc_base/numerics/safe_conversions.h" |
| |
| namespace webrtc { |
| |
| std::optional<AudioDecoderG722::Config> AudioDecoderG722::SdpToConfig( |
| const SdpAudioFormat& format) { |
| if (absl::EqualsIgnoreCase(format.name, "G722") && |
| format.clockrate_hz == 8000 && |
| (format.num_channels == 1 || format.num_channels == 2)) { |
| return Config{rtc::dchecked_cast<int>(format.num_channels)}; |
| } |
| return std::nullopt; |
| } |
| |
| void AudioDecoderG722::AppendSupportedDecoders( |
| std::vector<AudioCodecSpec>* specs) { |
| specs->push_back({{"G722", 8000, 1}, {16000, 1, 64000}}); |
| } |
| |
| std::unique_ptr<AudioDecoder> AudioDecoderG722::MakeAudioDecoder( |
| Config config, |
| std::optional<AudioCodecPairId> /*codec_pair_id*/, |
| const FieldTrialsView* /* field_trials */) { |
| if (!config.IsOk()) { |
| RTC_DCHECK_NOTREACHED(); |
| return nullptr; |
| } |
| switch (config.num_channels) { |
| case 1: |
| return std::make_unique<AudioDecoderG722Impl>(); |
| case 2: |
| return std::make_unique<AudioDecoderG722StereoImpl>(); |
| default: |
| RTC_DCHECK_NOTREACHED(); |
| return nullptr; |
| } |
| } |
| |
| } // namespace webrtc |