Created by the British Broadcasting Corporation.
00001 /* ***** BEGIN LICENSE BLOCK ***** 00002 * 00003 * $Id: seq_compress.h,v 1.19 2007/09/26 12:18:43 asuraparaju Exp $ $Name: Dirac_0_9_0 $ 00004 * 00005 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 00006 * 00007 * The contents of this file are subject to the Mozilla Public License 00008 * Version 1.1 (the "License"); you may not use this file except in compliance 00009 * with the License. You may obtain a copy of the License at 00010 * http://www.mozilla.org/MPL/ 00011 * 00012 * Software distributed under the License is distributed on an "AS IS" basis, 00013 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for 00014 * the specific language governing rights and limitations under the License. 00015 * 00016 * The Original Code is BBC Research and Development code. 00017 * 00018 * The Initial Developer of the Original Code is the British Broadcasting 00019 * Corporation. 00020 * Portions created by the Initial Developer are Copyright (C) 2004. 00021 * All Rights Reserved. 00022 * 00023 * Contributor(s): Thomas Davies (Original Author), 00024 * Scott R Ladd, 00025 * Anuradha Suraparaju 00026 * Andrew Kennedy 00027 * 00028 * Alternatively, the contents of this file may be used under the terms of 00029 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser 00030 * Public License Version 2.1 (the "LGPL"), in which case the provisions of 00031 * the GPL or the LGPL are applicable instead of those above. If you wish to 00032 * allow use of your version of this file only under the terms of the either 00033 * the GPL or LGPL and not to allow others to use your version of this file 00034 * under the MPL, indicate your decision by deleting the provisions above 00035 * and replace them with the notice and other provisions required by the GPL 00036 * or LGPL. If you do not delete the provisions above, a recipient may use 00037 * your version of this file under the terms of any one of the MPL, the GPL 00038 * or the LGPL. 00039 * ***** END LICENSE BLOCK ***** */ 00040 00041 #ifndef _SEQ_COMPRESS_H_ 00042 #define _SEQ_COMPRESS_H_ 00043 00045 //-------------------------------------// 00046 //Class to manage compressing sequences// 00047 //-------------------------------------// 00049 00050 #include <libdirac_byteio/dirac_byte_stream.h> 00051 #include <libdirac_common/common.h> 00052 #include <libdirac_common/frame_buffer.h> 00053 #include <libdirac_common/pic_io.h> 00054 #include <libdirac_common/dirac_assertions.h> 00055 #include <libdirac_encoder/quality_monitor.h> 00056 #include <libdirac_encoder/frame_compress.h> 00057 #include <libdirac_encoder/rate_control.h> 00058 00059 #include <fstream> 00060 00061 namespace dirac 00062 { 00063 00065 00073 class SequenceCompressor{ 00074 public: 00076 00084 SequenceCompressor(StreamPicInput* pin, 00085 EncoderParams& encp, 00086 DiracByteStream& dirac_byte_stream); 00087 00089 00092 virtual ~SequenceCompressor(); 00093 00095 00103 virtual bool LoadNextFrame() = 0; 00104 00106 00125 Frame &CompressNextFrame(); 00126 00128 const Frame *GetFrameEncoded(); 00129 00131 const MEData *GetMEData(); 00132 00133 DiracByteStats EndSequence(); 00134 00136 00141 bool Finished(){return m_all_done;} 00142 00143 00144 protected: 00145 void Denoise( Frame& frame ); 00146 00148 void DenoiseComponent( PicArray& pic_data ); 00149 00150 ValueType Median( const ValueType* val_list, const int length); 00151 00153 00159 virtual int CodedToDisplay(const int pnum) = 0; 00160 00162 void MakeSequenceReport(); 00163 00165 virtual const Frame& OriginalFrame(int frame_num) 00166 { return m_mebuffer->GetFrame(frame_num); } 00167 00169 virtual void CleanBuffers(); 00170 00172 virtual bool IsNewAccessUnit() = 0; 00173 00175 virtual void RateControlCompress(Frame& my_frame, bool is_a_cut) = 0; 00176 00178 bool m_all_done; 00179 00181 00186 bool m_just_finished; 00187 00189 SourceParams& m_srcparams; 00190 00192 EncoderParams& m_encparams; 00193 00195 StreamPicInput* m_pic_in; 00196 00198 FrameBuffer* m_fbuffer; 00199 00201 FrameBuffer* m_mebuffer; 00202 00203 //state variables for CompressNextFrame 00204 00206 int m_current_display_fnum; 00207 00209 int m_current_code_fnum; 00210 00212 int m_show_fnum; 00213 00215 int m_last_frame_read; 00216 00218 int m_delay; 00219 00221 QualityMonitor m_qmonitor; 00222 00224 RateController* m_ratecontrol; 00225 00227 FrameCompressor m_fcoder; 00228 00230 DiracByteStream& m_dirac_byte_stream; 00231 00232 private: 00234 00238 SequenceCompressor(const SequenceCompressor& cpy); 00239 00241 00245 SequenceCompressor& operator=(const SequenceCompressor& rhs); 00246 00247 00248 }; 00249 00251 00257 class FrameSequenceCompressor : public SequenceCompressor 00258 { 00259 public: 00261 00270 FrameSequenceCompressor(StreamPicInput* pin, 00271 EncoderParams& encp, 00272 DiracByteStream& dirac_byte_stream); 00273 00275 00278 virtual ~FrameSequenceCompressor(){}; 00279 00281 00287 virtual bool LoadNextFrame(); 00288 protected: 00289 virtual int CodedToDisplay(const int pnum); 00290 virtual bool IsNewAccessUnit(); 00291 virtual void RateControlCompress(Frame& my_frame, bool is_a_cut); 00292 00293 }; 00294 00296 00302 class FieldSequenceCompressor : public SequenceCompressor 00303 { 00304 public: 00306 00314 FieldSequenceCompressor(StreamPicInput* pin, 00315 EncoderParams& encp, 00316 DiracByteStream& dirac_byte_stream); 00317 00319 00322 virtual ~FieldSequenceCompressor(); 00323 00325 00332 virtual bool LoadNextFrame(); 00333 00334 protected: 00335 virtual const Frame& OriginalFrame(int frame_num); 00336 00337 virtual void CleanBuffers(); 00338 00339 virtual int CodedToDisplay(const int pnum); 00340 virtual bool IsNewAccessUnit(); 00341 00342 virtual void RateControlCompress(Frame& my_frame, bool is_a_cut); 00343 private: 00345 00349 void PreMotionEstmationFilter (PicArray& comp); 00350 00352 FrameBuffer* m_origbuffer; 00353 00354 // Field1 bytes 00355 int m_field1_bytes; 00356 // Field2 bytes 00357 int m_field2_bytes; 00358 }; 00359 } // namespace dirac 00360 00361 #endif
© 2004 British Broadcasting Corporation.
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