1 // Copyright 2014 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.
5 #include "content/renderer/media/media_stream_constraints_util.h"
7 #include "base/strings/string_number_conversions.h"
8 #include "base/strings/utf_string_conversions.h"
9 #include "third_party/WebKit/public/platform/WebMediaConstraints.h"
10 #include "third_party/WebKit/public/platform/WebString.h"
16 // Convert a string ("true", "false") to a boolean.
17 bool ConvertStringToBoolean(const std::string& string, bool* value) {
18 static const char kValueTrue[] = "true";
19 static const char kValueFalse[] = "false";
21 *value = (string == kValueTrue);
22 return *value || (string == kValueFalse);
27 bool GetConstraintValueAsBoolean(const blink::WebMediaConstraints& constraints,
28 const std::string& name,
30 return GetMandatoryConstraintValueAsBoolean(constraints, name, value) ||
31 GetOptionalConstraintValueAsBoolean(constraints, name, value);
34 bool GetConstraintValueAsInteger(const blink::WebMediaConstraints& constraints,
35 const std::string& name,
37 return GetMandatoryConstraintValueAsInteger(constraints, name, value) ||
38 GetOptionalConstraintValueAsInteger(constraints, name, value);
41 bool GetConstraintValueAsString(const blink::WebMediaConstraints& constraints,
42 const std::string& name,
44 blink::WebString value_str;
45 base::string16 name_16 = base::UTF8ToUTF16(name);
46 if (!constraints.getMandatoryConstraintValue(name_16, value_str) &&
47 !constraints.getOptionalConstraintValue(name_16, value_str)) {
51 *value = value_str.utf8();
55 bool GetMandatoryConstraintValueAsBoolean(
56 const blink::WebMediaConstraints& constraints,
57 const std::string& name,
59 blink::WebString value_str;
60 if (!constraints.getMandatoryConstraintValue(base::UTF8ToUTF16(name),
65 return ConvertStringToBoolean(value_str.utf8(), value);
68 bool GetMandatoryConstraintValueAsInteger(
69 const blink::WebMediaConstraints& constraints,
70 const std::string& name,
72 blink::WebString value_str;
73 if (!constraints.getMandatoryConstraintValue(base::UTF8ToUTF16(name),
78 return base::StringToInt(value_str.utf8(), value);
81 bool GetMandatoryConstraintValueAsDouble(
82 const blink::WebMediaConstraints& constraints,
83 const std::string& name,
85 blink::WebString value_str;
86 if (!constraints.getMandatoryConstraintValue(base::UTF8ToUTF16(name),
90 return base::StringToDouble(value_str.utf8(), value);
93 bool GetOptionalConstraintValueAsBoolean(
94 const blink::WebMediaConstraints& constraints,
95 const std::string& name,
97 blink::WebString value_str;
98 if (!constraints.getOptionalConstraintValue(base::UTF8ToUTF16(name),
103 return ConvertStringToBoolean(value_str.utf8(), value);
106 bool GetOptionalConstraintValueAsInteger(
107 const blink::WebMediaConstraints& constraints,
108 const std::string& name,
110 blink::WebString value_str;
111 if (!constraints.getOptionalConstraintValue(base::UTF8ToUTF16(name),
116 return base::StringToInt(value_str.utf8(), value);
119 bool GetOptionalConstraintValueAsDouble(
120 const blink::WebMediaConstraints& constraints,
121 const std::string& name,
123 blink::WebString value_str;
124 if (!constraints.getOptionalConstraintValue(base::UTF8ToUTF16(name),
129 return base::StringToDouble(value_str.utf8(), value);
132 } // namespace content