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714e3cbb48
Bug: webrtc:13579 Change-Id: Ifec66fb6ba9724d18539de7245a358c2d13c7939 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/268547 Reviewed-by: Ivo Creusen <ivoc@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Ali Tofigh <alito@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37573}
52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
/*
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* Copyright (c) 2019 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/codecs/opus/audio_coder_opus_common.h"
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#include "absl/strings/string_view.h"
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namespace webrtc {
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absl::optional<std::string> GetFormatParameter(const SdpAudioFormat& format,
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absl::string_view param) {
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auto it = format.parameters.find(std::string(param));
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if (it == format.parameters.end())
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return absl::nullopt;
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return it->second;
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}
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// Parses a comma-separated string "1,2,0,6" into a std::vector<unsigned char>.
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template <>
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absl::optional<std::vector<unsigned char>> GetFormatParameter(
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const SdpAudioFormat& format,
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absl::string_view param) {
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std::vector<unsigned char> result;
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const std::string comma_separated_list =
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GetFormatParameter(format, param).value_or("");
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size_t pos = 0;
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while (pos < comma_separated_list.size()) {
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const size_t next_comma = comma_separated_list.find(',', pos);
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const size_t distance_to_next_comma = next_comma == std::string::npos
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? std::string::npos
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: (next_comma - pos);
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auto substring_with_number =
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comma_separated_list.substr(pos, distance_to_next_comma);
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auto conv = rtc::StringToNumber<int>(substring_with_number);
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if (!conv.has_value()) {
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return absl::nullopt;
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}
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result.push_back(*conv);
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pos += substring_with_number.size() + 1;
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}
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return result;
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}
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} // namespace webrtc
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