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common/rfb/JpegCompressor.h

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+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright (C) 2011 D. R. Commander.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+//
+// JpegCompressor compresses RGB input into a JPEG image and stores it in
+// an underlying MemOutStream
+//
+
+#ifndef __RFB_JPEGCOMPRESSOR_H__
+#define __RFB_JPEGCOMPRESSOR_H__
+
+#include <rdr/MemOutStream.h>
+#include <rfb/PixelFormat.h>
+#include <rfb/Rect.h>
+
+struct jpeg_compress_struct;
+
+struct JPEG_ERROR_MGR;
+struct JPEG_DEST_MGR;
+
+namespace rfb {
+
+  class JpegCompressor : public rdr::MemOutStream {
+
+  public:
+
+    JpegCompressor(int bufferLen = 128*1024);
+    virtual ~JpegCompressor();
+
+    void compress(const rdr::U8 *, int, const Rect&, const PixelFormat&, int, int);
+
+    void writeBytes(const void*, int);
+
+    inline rdr::U8* getstart() { return start; }
+
+    inline int overrun(int itemSize, int nItems) {
+      return MemOutStream::overrun(itemSize, nItems);
+    }
+
+  private:
+
+    struct jpeg_compress_struct *cinfo;
+
+    struct JPEG_ERROR_MGR *err;
+    struct JPEG_DEST_MGR *dest;
+
+  };
+
+} // end of namespace rfb
+
+#endif