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      1 /*
      2  * Copyright (C) 2012 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebMediaConstraints_h
     32 #define WebMediaConstraints_h
     33 
     34 #include "WebCommon.h"
     35 #include "WebNonCopyable.h"
     36 #include "WebPrivatePtr.h"
     37 #include "WebString.h"
     38 #include "WebVector.h"
     39 
     40 namespace WebCore {
     41 struct MediaConstraint;
     42 class MediaConstraints;
     43 }
     44 
     45 namespace blink {
     46 
     47 struct WebMediaConstraint {
     48     WebMediaConstraint()
     49     {
     50     }
     51 
     52     WebMediaConstraint(WebString name, WebString value)
     53         : m_name(name)
     54         , m_value(value)
     55     {
     56     }
     57 
     58 #if INSIDE_BLINK
     59     BLINK_PLATFORM_EXPORT WebMediaConstraint(const WebCore::MediaConstraint&);
     60 #endif
     61 
     62     WebString m_name;
     63     WebString m_value;
     64 };
     65 
     66 class WebMediaConstraints {
     67 public:
     68     WebMediaConstraints() { }
     69     WebMediaConstraints(const WebMediaConstraints& other) { assign(other); }
     70     ~WebMediaConstraints() { reset(); }
     71 
     72     WebMediaConstraints& operator=(const WebMediaConstraints& other)
     73     {
     74         assign(other);
     75         return *this;
     76     }
     77 
     78     BLINK_PLATFORM_EXPORT void assign(const WebMediaConstraints&);
     79 
     80     BLINK_PLATFORM_EXPORT void reset();
     81     bool isNull() const { return m_private.isNull(); }
     82 
     83     BLINK_PLATFORM_EXPORT void getMandatoryConstraints(WebVector<WebMediaConstraint>&) const;
     84     BLINK_PLATFORM_EXPORT void getOptionalConstraints(WebVector<WebMediaConstraint>&) const;
     85 
     86     BLINK_PLATFORM_EXPORT bool getMandatoryConstraintValue(const WebString& name, WebString& value) const;
     87     BLINK_PLATFORM_EXPORT bool getOptionalConstraintValue(const WebString& name, WebString& value) const;
     88 
     89 #if INSIDE_BLINK
     90     BLINK_PLATFORM_EXPORT WebMediaConstraints(const WTF::PassRefPtr<WebCore::MediaConstraints>&);
     91     BLINK_PLATFORM_EXPORT WebMediaConstraints(WebCore::MediaConstraints*);
     92 #endif
     93 
     94 private:
     95     WebPrivatePtr<WebCore::MediaConstraints> m_private;
     96 };
     97 
     98 } // namespace blink
     99 
    100 #endif // WebMediaConstraints_h
    101