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_encoder_L16.h" 12 13 #include "common_types.h" // NOLINT(build/include) 14 #include "modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h" 15 #include "modules/audio_coding/codecs/pcm16b/pcm16b_common.h" 16 #include "rtc_base/numerics/safe_conversions.h" 17 #include "rtc_base/ptr_util.h" 18 19 namespace webrtc { 20 SdpToConfig(const SdpAudioFormat & format)21rtc::Optional<AudioEncoderL16::Config> AudioEncoderL16::SdpToConfig( 22 const SdpAudioFormat& format) { 23 if (!rtc::IsValueInRangeForNumericType<int>(format.num_channels)) { 24 return rtc::nullopt; 25 } 26 Config config; 27 config.sample_rate_hz = format.clockrate_hz; 28 config.num_channels = rtc::dchecked_cast<int>(format.num_channels); 29 return STR_CASE_CMP(format.name.c_str(), "L16") == 0 && config.IsOk() 30 ? rtc::Optional<Config>(config) 31 : rtc::nullopt; 32 } 33 AppendSupportedEncoders(std::vector<AudioCodecSpec> * specs)34void AudioEncoderL16::AppendSupportedEncoders( 35 std::vector<AudioCodecSpec>* specs) { 36 Pcm16BAppendSupportedCodecSpecs(specs); 37 } 38 QueryAudioEncoder(const AudioEncoderL16::Config & config)39AudioCodecInfo AudioEncoderL16::QueryAudioEncoder( 40 const AudioEncoderL16::Config& config) { 41 RTC_DCHECK(config.IsOk()); 42 return {config.sample_rate_hz, 43 rtc::dchecked_cast<size_t>(config.num_channels), 44 config.sample_rate_hz * config.num_channels * 16}; 45 } 46 MakeAudioEncoder(const AudioEncoderL16::Config & config,int payload_type)47std::unique_ptr<AudioEncoder> AudioEncoderL16::MakeAudioEncoder( 48 const AudioEncoderL16::Config& config, 49 int payload_type) { 50 RTC_DCHECK(config.IsOk()); 51 AudioEncoderPcm16B::Config c; 52 c.sample_rate_hz = config.sample_rate_hz; 53 c.num_channels = config.num_channels; 54 c.frame_size_ms = config.frame_size_ms; 55 c.payload_type = payload_type; 56 return rtc::MakeUnique<AudioEncoderPcm16B>(c); 57 } 58 59 } // namespace webrtc 60