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      1 /*
      2  * Copyright (C) 2010 Apple, 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef QTDecompressionSession_h
     27 #define QTDecompressionSession_h
     28 
     29 #ifdef QTMOVIEWIN_EXPORTS
     30 #define QTMOVIEWIN_API __declspec(dllexport)
     31 #else
     32 #define QTMOVIEWIN_API __declspec(dllimport)
     33 #endif
     34 
     35 #include "QTPixelBuffer.h"
     36 
     37 #include <WTF/PassOwnPtr.h>
     38 
     39 class QTDecompressionSessionClient;
     40 typedef struct OpaqueICMDecompressionSession*  ICMDecompressionSessionRef;
     41 
     42 class QTMOVIEWIN_API QTDecompressionSession {
     43 public:
     44     static PassOwnPtr<QTDecompressionSession> create(unsigned long pixelFormat, size_t width, size_t height);
     45     ~QTDecompressionSession();
     46 
     47     bool canDecompress(QTPixelBuffer);
     48 
     49     // The resulting QTPixelBuffer will be a CG compatable ARGB pixel buffer.
     50     QTPixelBuffer decompress(QTPixelBuffer);
     51 
     52 private:
     53     friend class QTDecompressionSessionClient;
     54     QTDecompressionSession(unsigned long pixelFormat, size_t width, size_t height);
     55     void initializeSession();
     56 
     57     unsigned long m_pixelFormat;
     58     size_t m_width;
     59     size_t m_height;
     60     QTPixelBuffer m_latestFrame;
     61     ICMDecompressionSessionRef m_session;
     62 };
     63 
     64 #endif
     65