frame_decompress.h
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- /* ***** BEGIN LICENSE BLOCK *****
- *
- * $Id: frame_decompress.h,v 1.3 2005/01/30 05:11:41 gabest Exp $ $Name: $
- *
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License
- * Version 1.1 (the "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
- * the specific language governing rights and limitations under the License.
- *
- * The Original Code is BBC Research and Development code.
- *
- * The Initial Developer of the Original Code is the British Broadcasting
- * Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2004.
- * All Rights Reserved.
- *
- * Contributor(s): Thomas Davies (Original Author),
- * Scott R Ladd,
- * Anuradha Suraparaju
- *
- * Alternatively, the contents of this file may be used under the terms of
- * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
- * Public License Version 2.1 (the "LGPL"), in which case the provisions of
- * the GPL or the LGPL are applicable instead of those above. If you wish to
- * allow use of your version of this file only under the terms of the either
- * the GPL or LGPL and not to allow others to use your version of this file
- * under the MPL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by the GPL
- * or LGPL. If you do not delete the provisions above, a recipient may use
- * your version of this file under the terms of any one of the MPL, the GPL
- * or the LGPL.
- * ***** END LICENSE BLOCK ***** */
- #ifndef _FRAME_DECOMPRESS_H_
- #define _FRAME_DECOMPRESS_H_
- #include "libdirac_common/frame_buffer.h"
- #include "libdirac_common/common.h"
- namespace dirac
- {
- //! Compress a single image frame
- /*!
- This class decompresses a single frame at a time, using parameters
- supplied at its construction. FrameDecompressor is used by
- SequenceDecompressor.
- */
- class FrameDecompressor{
- public:
- //! Constructor
- /*!
- Creates a FrameDecompressor with specific set of parameters the
- control the decompression process. It decodes motion data before
- decoding each component of the frame.
- param decp decoder parameters
- param cf the chroma format of the frame being decompressed
- */
- FrameDecompressor(DecoderParams& decp, ChromaFormat cf);
- //! Destructor
- /*!
- Releases resources.
- */
- ~FrameDecompressor();
- //! Decompress the next frame into the buffer
- /*!
- Decompresses the next frame from the stream and place at the end
- of a frame buffer.
- Returns true if able to decode successfully, false otherwise
- param my_buffer picture buffer into which the frame is placed
- */
- bool Decompress(FrameBuffer& my_buffer);
- //! Reads the header data
- /*!
- Reads the header data associated with decompressing the frame
- param my_buffer picture buffer from which frame dimensions are obtained
- */
- bool ReadFrameHeader(const FrameBuffer& my_buffer);
- //! Returns the frame parameters of the current frame being decoded
- const FrameParams& GetFrameParams() const{ return m_fparams; }
- private:
- //! Copy constructor is private and body-less
- /*!
- Copy constructor is private and body-less. This class should not be copied.
- */
- FrameDecompressor(const FrameDecompressor& cpy);
- //! Assignment = is private and body-less
- /*!
- Assignment = is private and body-less. This class should not be
- assigned.
- */
- FrameDecompressor& operator=(const FrameDecompressor& rhs);
- //! Decodes component data
- void CompDecompress(FrameBuffer& my_buffer,int fnum, CompSort cs);
- //! Reads the header data associated with decompressing the frame
- bool ReadFrameHeader(FrameParams& fparams);
- //Member variables
- //! Parameters for the decompression, as provided in constructor
- DecoderParams& m_decparams;
- //! Chroma format of the frame being decompressed
- ChromaFormat m_cformat;
- //! An indicator which is true if the frame has been skipped, false otherwise
- bool m_skipped;
- //! An indicator that is true if we use global motion vectors, false otherwise
- bool m_use_global;
- //! An indicator that is true if we use block motion vectors, false otherwise
- bool m_use_block_mv;
- //! Prediction mode to use if we only have global motion vectors
- PredMode m_global_pred_mode;
- //! Current Frame Parameters
- FrameParams m_fparams;
- //! Read header successfully
- bool m_read_header;
- };
- } // namespace dirac
- #endif