Created by the British Broadcasting Corporation.
00001 /* ***** BEGIN LICENSE BLOCK ***** 00002 * 00003 * $Id: seq_compress.h,v 1.33 2008/10/20 04:20:12 asuraparaju Exp $ $Name: Dirac_1_0_2 $ 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_encoder/enc_queue.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/picture_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 const EncPicture *CompressNextPicture(); 00126 00128 virtual void SetPicTypeAndRefs( PictureParams& pparams ) = 0; 00129 00131 const EncPicture *GetPictureEncoded(); 00132 00133 DiracByteStats EndSequence(); 00134 00136 00141 bool Finished(){return m_all_done;} 00142 00144 void SignalEOS() { m_eos_signalled = true; } 00145 00147 int PTSOffset(){return m_delay;} 00148 00149 protected: 00150 00152 void SetMotionParameters(); 00153 00155 00161 virtual int CodedToDisplay(const int pnum) = 0; 00162 00164 void MakeSequenceReport(); 00165 00167 virtual void CleanBuffers(); 00168 00170 //Purely virtual. The child class will have to define it. 00171 virtual void UpdateCBRModel(EncPicture& my_picture, const PictureByteIO* picture_byteio) = 0; 00172 00174 void UpdateIntraPicCBRModel( const PictureParams& , const bool is_a_cut ); 00175 00177 bool CanEncode(); 00178 00180 bool m_all_done; 00181 00183 00188 bool m_just_finished; 00189 00191 OLBParams* m_basic_olb_params0; 00192 00194 OLBParams* m_basic_olb_params1; 00195 00197 const OLBParams* m_basic_olb_params2; 00198 00200 OLBParams* m_intra_olbp; 00201 00203 SourceParams& m_srcparams; 00204 00206 EncoderParams& m_encparams; 00207 00209 PicturePredParams& m_predparams; 00210 00212 int m_L1_sep; 00213 00215 PictureParams m_pparams; 00216 00218 StreamPicInput* m_pic_in; 00219 00221 EncQueue m_enc_pbuffer; 00222 00223 //state variables for CompressNextPicture 00224 00226 int m_current_display_pnum; 00227 00229 int m_current_code_pnum; 00230 00232 int m_show_pnum; 00233 00235 int m_last_picture_read; 00236 00238 int m_gop_start_num; 00239 00241 int m_delay; 00242 00244 QualityMonitor m_qmonitor; 00245 00247 RateController* m_ratecontrol; 00248 00250 PictureCompressor m_pcoder; 00251 00253 DiracByteStream& m_dirac_byte_stream; 00254 00256 bool m_eos_signalled; 00257 00258 private: 00260 00264 SequenceCompressor(const SequenceCompressor& cpy); 00265 00267 00271 SequenceCompressor& operator=(const SequenceCompressor& rhs); 00272 00273 00274 }; 00275 00277 00283 class FrameSequenceCompressor : public SequenceCompressor 00284 { 00285 public: 00287 00296 FrameSequenceCompressor(StreamPicInput* pin, 00297 EncoderParams& encp, 00298 DiracByteStream& dirac_byte_stream); 00299 00301 00304 virtual ~FrameSequenceCompressor(){}; 00305 00307 00313 virtual bool LoadNextFrame(); 00314 00316 virtual void SetPicTypeAndRefs( PictureParams& pparams ); 00317 00318 protected: 00319 virtual int CodedToDisplay(const int pnum); 00320 virtual void UpdateCBRModel(EncPicture& my_picture, const PictureByteIO* picture_byteio); 00321 00322 }; 00323 00325 00331 class FieldSequenceCompressor : public SequenceCompressor 00332 { 00333 public: 00335 00343 FieldSequenceCompressor(StreamPicInput* pin, 00344 EncoderParams& encp, 00345 DiracByteStream& dirac_byte_stream); 00346 00348 00351 virtual ~FieldSequenceCompressor(); 00352 00354 00361 virtual bool LoadNextFrame(); 00362 00363 00365 virtual void SetPicTypeAndRefs( PictureParams& pparams ); 00366 00367 protected: 00368 00369 virtual int CodedToDisplay(const int pnum); 00370 00371 virtual void UpdateCBRModel(EncPicture& my_picture, const PictureByteIO* picture_byteio); 00372 private: 00374 00378 void PreMotionEstmationFilter (PicArray& comp); 00379 00380 // Field1 bytes 00381 int m_field1_bytes; 00382 // Field2 bytes 00383 int m_field2_bytes; 00384 }; 00385 } // namespace dirac 00386 00387 #endif
© 2004 British Broadcasting Corporation.
Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
HTML documentation generated by Dimitri van Heesch's
excellent Doxygen tool.