blob: bfddc42bc911876cf59b6eda8507801b1d06a0d9 [file] [log] [blame]
* Copyright (c) 2015 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 "modules/audio_coding/acm2/rent_a_codec.h"
#include <memory>
#include <utility>
#include "rtc_base/logging.h"
#include "modules/audio_coding/acm2/acm_codec_database.h"
namespace webrtc {
namespace acm2 {
absl::optional<RentACodec::CodecId> RentACodec::CodecIdByParams(
const char* payload_name,
int sampling_freq_hz,
size_t channels) {
return CodecIdFromIndex(
ACMCodecDB::CodecId(payload_name, sampling_freq_hz, channels));
absl::optional<CodecInst> RentACodec::CodecInstById(CodecId codec_id) {
absl::optional<int> mi = CodecIndexFromId(codec_id);
return mi ? absl::optional<CodecInst>(ACMCodecDB::database_[*mi])
: absl::nullopt;
absl::optional<RentACodec::CodecId> RentACodec::CodecIdByInst(
const CodecInst& codec_inst) {
return CodecIdFromIndex(ACMCodecDB::CodecNumber(codec_inst));
absl::optional<CodecInst> RentACodec::CodecInstByParams(
const char* payload_name,
int sampling_freq_hz,
size_t channels) {
absl::optional<CodecId> codec_id =
CodecIdByParams(payload_name, sampling_freq_hz, channels);
if (!codec_id)
return absl::nullopt;
absl::optional<CodecInst> ci = CodecInstById(*codec_id);
// 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.
ci->channels = channels;
return ci;
absl::optional<NetEqDecoder> RentACodec::NetEqDecoderFromCodecId(
CodecId codec_id,
size_t num_channels) {
absl::optional<int> i = CodecIndexFromId(codec_id);
if (!i)
return absl::nullopt;
const NetEqDecoder ned = ACMCodecDB::neteq_decoders_[*i];
return (ned == NetEqDecoder::kDecoderOpus && num_channels == 2)
? NetEqDecoder::kDecoderOpus_2ch
: ned;
} // namespace acm2
} // namespace webrtc