audio_decoder_L16.cc (1819B)
1 /* 2 * Copyright (c) 2017 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 "api/audio_codecs/L16/audio_decoder_L16.h" 12 13 #include <memory> 14 #include <optional> 15 #include <vector> 16 17 #include "absl/strings/match.h" 18 #include "api/audio_codecs/audio_codec_pair_id.h" 19 #include "api/audio_codecs/audio_decoder.h" 20 #include "api/audio_codecs/audio_format.h" 21 #include "api/field_trials_view.h" 22 #include "modules/audio_coding/codecs/pcm16b/audio_decoder_pcm16b.h" 23 #include "modules/audio_coding/codecs/pcm16b/pcm16b_common.h" 24 #include "rtc_base/numerics/safe_conversions.h" 25 26 namespace webrtc { 27 28 std::optional<AudioDecoderL16::Config> AudioDecoderL16::SdpToConfig( 29 const SdpAudioFormat& format) { 30 Config config; 31 config.sample_rate_hz = format.clockrate_hz; 32 config.num_channels = checked_cast<int>(format.num_channels); 33 if (absl::EqualsIgnoreCase(format.name, "L16") && config.IsOk()) { 34 return config; 35 } 36 return std::nullopt; 37 } 38 39 void AudioDecoderL16::AppendSupportedDecoders( 40 std::vector<AudioCodecSpec>* specs) { 41 Pcm16BAppendSupportedCodecSpecs(specs); 42 } 43 44 std::unique_ptr<AudioDecoder> AudioDecoderL16::MakeAudioDecoder( 45 const Config& config, 46 std::optional<AudioCodecPairId> /*codec_pair_id*/, 47 const FieldTrialsView* /* field_trials */) { 48 if (!config.IsOk()) { 49 return nullptr; 50 } 51 return std::make_unique<AudioDecoderPcm16B>(config.sample_rate_hz, 52 config.num_channels); 53 } 54 55 } // namespace webrtc