49c33ce528
After this CL, all audio encoders have to be injected by the caller. This means that there is no special "built-in" set of codecs, and users won't have to pay the binary size and security costs of codecs they aren't using. Bug: webrtc:8396 Change-Id: Idb0959ce395940c8bb3bbb49256cdcd84fc87bb6 Reviewed-on: https://webrtc-review.googlesource.com/c/103821 Commit-Queue: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Ivo Creusen <ivoc@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25600}
86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*
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* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_coding/acm2/rent_a_codec.h"
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#include <memory>
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#include <utility>
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#include "rtc_base/logging.h"
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#include "modules/audio_coding/acm2/acm_codec_database.h"
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namespace webrtc {
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namespace acm2 {
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absl::optional<RentACodec::CodecId> RentACodec::CodecIdByParams(
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const char* payload_name,
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int sampling_freq_hz,
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size_t channels) {
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return CodecIdFromIndex(
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ACMCodecDB::CodecId(payload_name, sampling_freq_hz, channels));
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}
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absl::optional<CodecInst> RentACodec::CodecInstById(CodecId codec_id) {
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absl::optional<int> mi = CodecIndexFromId(codec_id);
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return mi ? absl::optional<CodecInst>(Database()[*mi]) : absl::nullopt;
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}
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absl::optional<RentACodec::CodecId> RentACodec::CodecIdByInst(
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const CodecInst& codec_inst) {
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return CodecIdFromIndex(ACMCodecDB::CodecNumber(codec_inst));
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}
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absl::optional<CodecInst> RentACodec::CodecInstByParams(
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const char* payload_name,
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int sampling_freq_hz,
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size_t channels) {
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absl::optional<CodecId> codec_id =
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CodecIdByParams(payload_name, sampling_freq_hz, channels);
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if (!codec_id)
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return absl::nullopt;
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absl::optional<CodecInst> ci = CodecInstById(*codec_id);
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RTC_DCHECK(ci);
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// Keep the number of channels from the function call. For most codecs it
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// will be the same value as in default codec settings, but not for all.
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ci->channels = channels;
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return ci;
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}
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absl::optional<bool> RentACodec::IsSupportedNumChannels(CodecId codec_id,
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size_t num_channels) {
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auto i = CodecIndexFromId(codec_id);
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return i ? absl::optional<bool>(
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ACMCodecDB::codec_settings_[*i].channel_support >=
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num_channels)
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: absl::nullopt;
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}
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rtc::ArrayView<const CodecInst> RentACodec::Database() {
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return rtc::ArrayView<const CodecInst>(ACMCodecDB::database_,
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NumberOfCodecs());
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}
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absl::optional<NetEqDecoder> RentACodec::NetEqDecoderFromCodecId(
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CodecId codec_id,
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size_t num_channels) {
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absl::optional<int> i = CodecIndexFromId(codec_id);
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if (!i)
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return absl::nullopt;
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const NetEqDecoder ned = ACMCodecDB::neteq_decoders_[*i];
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return (ned == NetEqDecoder::kDecoderOpus && num_channels == 2)
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? NetEqDecoder::kDecoderOpus_2ch
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: ned;
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}
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} // namespace acm2
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} // namespace webrtc
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