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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "media/audio/point.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 #include "base/strings/string_number_conversions.h" | |
| 11 #include "base/strings/string_split.h" | |
| 12 #include "base/strings/string_util.h" | |
| 13 #include "base/strings/stringprintf.h" | |
| 14 | |
| 15 namespace media { | |
| 16 | |
| 17 std::string PointsToString(const std::vector<Point>& points) { | |
| 18 std::string points_string; | |
| 19 if (!points.empty()) { | |
| 20 for (size_t i = 0; i < points.size() - 1; ++i) { | |
| 21 points_string.append(points[i].ToString()); | |
| 22 points_string.append(", "); | |
| 23 } | |
| 24 points_string.append(points.back().ToString()); | |
| 25 } | |
| 26 return points_string; | |
| 27 } | |
| 28 | |
| 29 std::vector<Point> ParsePointsFromString(const std::string& points_string) { | |
| 30 std::vector<Point> points; | |
| 31 if (points_string.empty()) | |
| 32 return points; | |
| 33 | |
| 34 const auto& tokens = | |
| 35 base::SplitString(points_string, base::kWhitespaceASCII, | |
| 36 base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY); | |
| 37 if (tokens.size() < 3 || tokens.size() % 3 != 0) { | |
| 38 LOG(ERROR) << "Malformed points string: " << points_string; | |
| 39 return points; | |
| 40 } | |
| 41 | |
| 42 std::vector<float> float_tokens; | |
| 43 float_tokens.reserve(tokens.size()); | |
| 44 for (const auto& token : tokens) { | |
| 45 double float_token; | |
| 46 if (!base::StringToDouble(token, &float_token)) { | |
| 47 LOG(ERROR) << "Unable to convert token=" << token | |
| 48 << " to double from points string: " << points_string; | |
| 49 return points; | |
| 50 } | |
| 51 float_tokens.push_back(float_token); | |
| 52 } | |
| 53 | |
| 54 points.reserve(float_tokens.size() / 3); | |
| 55 for (size_t i = 0; i < float_tokens.size(); i += 3) { | |
| 56 points.push_back( | |
| 57 Point(float_tokens[i + 0], float_tokens[i + 1], float_tokens[i + 2])); | |
| 58 } | |
| 59 | |
| 60 return points; | |
| 61 } | |
| 62 | |
| 63 } // namespace media | |
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