blob: 7bcb78ef5ab12b6761cfdcba8a2803450fdb3594 [file] [log] [blame]
/*
* 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/isac/audio_encoder_isac_fix.h"
#include <memory>
#include "absl/strings/match.h"
#include "modules/audio_coding/codecs/isac/fix/include/audio_encoder_isacfix.h"
#include "rtc_base/string_to_number.h"
namespace webrtc {
absl::optional<AudioEncoderIsacFix::Config> AudioEncoderIsacFix::SdpToConfig(
const SdpAudioFormat& format) {
if (absl::EqualsIgnoreCase(format.name, "ISAC") &&
format.clockrate_hz == 16000 && format.num_channels == 1) {
Config config;
const auto ptime_iter = format.parameters.find("ptime");
if (ptime_iter != format.parameters.end()) {
const auto ptime = rtc::StringToNumber<int>(ptime_iter->second);
if (ptime && *ptime >= 60) {
config.frame_size_ms = 60;
}
}
return config;
} else {
return absl::nullopt;
}
}
void AudioEncoderIsacFix::AppendSupportedEncoders(
std::vector<AudioCodecSpec>* specs) {
const SdpAudioFormat fmt = {"ISAC", 16000, 1};
const AudioCodecInfo info = QueryAudioEncoder(*SdpToConfig(fmt));
specs->push_back({fmt, info});
}
AudioCodecInfo AudioEncoderIsacFix::QueryAudioEncoder(
AudioEncoderIsacFix::Config config) {
RTC_DCHECK(config.IsOk());
return {16000, 1, 32000, 10000, 32000};
}
std::unique_ptr<AudioEncoder> AudioEncoderIsacFix::MakeAudioEncoder(
AudioEncoderIsacFix::Config config,
int payload_type,
absl::optional<AudioCodecPairId> /*codec_pair_id*/) {
RTC_DCHECK(config.IsOk());
AudioEncoderIsacFixImpl::Config c;
c.frame_size_ms = config.frame_size_ms;
c.payload_type = payload_type;
return std::make_unique<AudioEncoderIsacFixImpl>(c);
}
} // namespace webrtc