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. 4 5#ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CONSTRAINTS_UTIL_H_ 6#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CONSTRAINTS_UTIL_H_ 7 8#include <string> 9 10#include "content/common/content_export.h" 11 12namespace blink { 13class WebMediaConstraints; 14class WebString; 15} 16 17namespace content { 18 19// Method to get boolean value of constraint with |name| from constraints. 20// Returns true if the constraint is specified in either mandatory or optional 21// constraints. 22bool CONTENT_EXPORT GetConstraintValueAsBoolean( 23 const blink::WebMediaConstraints& constraints, 24 const std::string& name, 25 bool* value); 26 27// Method to get int value of constraint with |name| from constraints. 28// Returns true if the constraint is specified in either mandatory or Optional 29// constraints. 30bool CONTENT_EXPORT GetConstraintValueAsInteger( 31 const blink::WebMediaConstraints& constraints, 32 const std::string& name, 33 int* value); 34 35// Method to get double precision value of constraint with |name| from 36// constraints. Returns true if the constraint is specified in either mandatory 37// or Optional constraints. 38bool CONTENT_EXPORT GetConstraintValueAsDouble( 39 const blink::WebMediaConstraints& constraints, 40 const std::string& name, 41 double* value); 42 43// Method to get std::string value of constraint with |name| from constraints. 44// Returns true if the constraint is specified in either mandatory or Optional 45// constraints. 46bool CONTENT_EXPORT GetConstraintValueAsString( 47 const blink::WebMediaConstraints& constraints, 48 const std::string& name, 49 std::string* value); 50 51// Method to get boolean value of constraint with |name| from the 52// mandatory constraints. 53bool CONTENT_EXPORT GetMandatoryConstraintValueAsBoolean( 54 const blink::WebMediaConstraints& constraints, 55 const std::string& name, 56 bool* value); 57 58// Method to get int value of constraint with |name| from the 59// mandatory constraints. 60bool CONTENT_EXPORT GetMandatoryConstraintValueAsInteger( 61 const blink::WebMediaConstraints& constraints, 62 const std::string& name, 63 int* value); 64 65// Method to get double value of constraint with |name| from the 66// mandatory constraints. 67bool CONTENT_EXPORT GetMandatoryConstraintValueAsDouble( 68 const blink::WebMediaConstraints& constraints, 69 const std::string& name, 70 double* value); 71 72// Method to get bool value of constraint with |name| from the 73// optional constraints. 74bool CONTENT_EXPORT GetOptionalConstraintValueAsBoolean( 75 const blink::WebMediaConstraints& constraints, 76 const std::string& name, 77 bool* value); 78 79// Method to get int value of constraint with |name| from the 80// optional constraints. 81bool CONTENT_EXPORT GetOptionalConstraintValueAsInteger( 82 const blink::WebMediaConstraints& constraints, 83 const std::string& name, 84 int* value); 85 86// Method to get double value of constraint with |name| from the 87// optional constraints. 88bool CONTENT_EXPORT GetOptionalConstraintValueAsDouble( 89 const blink::WebMediaConstraints& constraints, 90 const std::string& name, 91 double* value); 92 93} // namespace content 94 95#endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CONSTRAINTS_UTIL_H_ 96