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h263codec.h

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00001 /*
00002  * h263codec.h
00003  *
00004  * H.323 protocol handler
00005  *
00006  * Open H323 Library
00007  *
00008  * Copyright (c) 1999-2000 Equivalence Pty. Ltd.
00009  *
00010  * The contents of this file are subject to the Mozilla Public License
00011  * Version 1.0 (the "License"); you may not use this file except in
00012  * compliance with the License. You may obtain a copy of the License at
00013  * http://www.mozilla.org/MPL/
00014  *
00015  * Software distributed under the License is distributed on an "AS IS"
00016  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
00017  * the License for the specific language governing rights and limitations
00018  * under the License.
00019  *
00020  * The Original Code is Open H323 Library.
00021  *
00022  * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
00023  *
00024  * Contributor(s): Guilhem Tardy (gtardy@marchnetworks.com)
00025  *
00026  * $Log: h263codec.h,v $
00027  * Revision 1.16  2004/04/22 22:35:00  csoutheren
00028  * Fixed mispelling of Guilhem Tardy - my apologies to him
00029  *
00030  * Revision 1.15  2004/04/22 14:22:20  csoutheren
00031  * Added RFC 2190 H.263 code as created by Guilhem Tardy and AliceStreet
00032  * Many thanks to them for their contributions.
00033  *
00034  * Revision 1.14  2003/08/04 00:03:22  dereksmithies
00035  * Reorganise tests for enabled
00036  *
00037  * Revision 1.13  2003/07/24 08:08:42  dereksmithies
00038  * Update to use vich263 codec, instead of ffmpeg.
00039  *
00040  * Revision 1.12  2003/06/06 05:18:54  dereksmithies
00041  * Fix startup delay bug. Remove all large packets from the network. Improve reliability.
00042  *
00043  * Revision 1.11  2003/05/27 09:22:55  dereksmithies
00044  * Updates for code revisions in h263 codec
00045  *
00046  * Revision 1.10  2003/05/14 13:47:58  rjongbloed
00047  * Removed static "initialisation" function as this should be done
00048  *   internally and not in the application.
00049  *
00050  * Revision 1.9  2003/05/05 11:59:21  robertj
00051  * Changed to use autoconf style selection of options and subsystems.
00052  *
00053  * Revision 1.8  2003/05/02 04:22:10  craigs
00054  * Added lots of extra H.263 support
00055  *
00056  * Revision 1.7  2003/04/27 09:16:38  rogerh
00057  * use PBYTE_ORDER instead of endian.h
00058  *
00059  * Revision 1.6  2003/04/21 21:50:22  dereks
00060  * Implement suggestion from Guilhem Tardy. Many thanks.
00061  *
00062  * Revision 1.5  2003/04/16 04:26:57  dereks
00063  * Initial release of h263 codec, which utilises the ffmpeg library.
00064  * Thanks to Guilhem Tardy, and to AliceStreet.
00065  *
00066  * Revision 1.4  2002/09/16 01:14:15  robertj
00067  * Added #define so can select if #pragma interface/implementation is used on
00068  *   platform basis (eg MacOS) rather than compiler, thanks Robert Monaghan.
00069  *
00070  * Revision 1.3  2002/09/03 06:19:36  robertj
00071  * Normalised the multi-include header prevention ifdef/define symbol.
00072  *
00073  * Revision 1.2  2002/08/05 10:03:47  robertj
00074  * Cosmetic changes to normalise the usage of pragma interface/implementation.
00075  *
00076  * Revision 1.1  2002/05/19 22:32:46  dereks
00077  * Initial release of stub file for h263 codec. Thanks Guilhem Tardy.
00078  *
00079  *
00080  *
00081  */
00082  
00083 /*
00084  * Initial release notes from Guilhem Tardy::
00085  *
00086  * Added support for video capabilities & codec, only tested under Linux!
00087  * The code for varying bit rate is copied from h261codec.cxx,
00088  * until it is moved to a separate file common to both video codecs.
00089  *
00090  */
00091 
00092 #ifndef __OPAL_H263CODEC_H
00093 #define __OPAL_H263CODEC_H
00094 
00095 #ifdef P_USE_PRAGMA
00096 #pragma interface
00097 #endif
00098 
00099 #include <openh323buildopts.h>
00100 
00101 
00102 #include "h323caps.h"
00103 
00104 #if defined(H323_VICH263) || defined(H323_RFC2190_AVCODEC)
00105 
00106 class H263Decoder;
00107 class H263Encoder;
00108 
00110 
00114 class H323_H263Capability : public H323VideoCapability
00115 {
00116   PCLASSINFO(H323_H263Capability, H323VideoCapability)
00117 
00118   public:
00123     H323_H263Capability(
00124       unsigned sqcifMPI,
00125       unsigned qcifMPI,
00126       unsigned cifMPI,
00127       unsigned cif4MPI,
00128       unsigned cif16MPI,
00129       unsigned maxBitRate = 850,
00130       unsigned videoFrameRate = 25,
00131       BOOL unrestrictedVector = FALSE,
00132       BOOL arithmeticCoding = FALSE,
00133       BOOL advancedPrediction = FALSE,
00134       BOOL pbFrames = FALSE,
00135       BOOL temporalSpatialTradeOff = TRUE,
00136       unsigned hrd_B = 0,
00137       unsigned bppMaxKb = 0,
00138       unsigned slowSqcifMPI = 0,
00139       unsigned slowQcifMPI = 0,
00140       unsigned slowCifMPI = 0,
00141       unsigned slowCif4MPI = 0,
00142       unsigned slowCif16MPI = 0,
00143       BOOL errorCompensation = FALSE
00144     );
00146 
00151     virtual PObject * Clone() const;
00153 
00154   
00159     Comparison Compare(const PObject & obj) const;
00161 
00170     virtual unsigned GetSubType() const;
00171 
00174     virtual PString GetFormatName() const;
00176 
00186     virtual BOOL OnSendingPDU(
00187       H245_VideoCapability & pdu  
00188     ) const;
00189 
00197     virtual BOOL OnSendingPDU(
00198       H245_VideoMode & pdu  
00199     ) const;
00200 
00208     virtual BOOL OnReceivedPDU(
00209       const H245_VideoCapability & pdu  
00210     );
00211 
00214     virtual H323Codec * CreateCodec(
00215       H323Codec::Direction direction  
00216     ) const;
00217 
00218 #if 0
00221     unsigned GetSQCIFMPI() const
00222       { return sqcifMPI); }
00223 
00226     unsigned GetQCIFMPI() const
00227       { return qcifMPI; }
00228 
00231     unsigned GetCIFMPI() const
00232       { return cifMPI; }
00233 
00236     unsigned GetCIF4MPI() const
00237       { return cif4MPI; }
00238 
00241     unsigned GetCIF16MPI() const
00242       { return cif16MPI; }
00243 
00246     unsigned GetMaxBitRate() const
00247       { return maxBitRate; }
00248 
00251     BOOL GetUnrestrictedVectorCapability() const
00252       { return unrestrictedVector; }
00253 
00256     BOOL GetArithmeticCodingCapability() const
00257       { return arithmeticCoding; }
00258 
00261     BOOL GetAdvancedPredictionCapability() const
00262       { return advancedPrediction; }
00263 
00266     BOOL GetPbFramesCapability() const
00267       { return pbFrames; }
00268 
00271     BOOL GetTemporalSpatialTradeOffCapability() const
00272       { return temporalSpatialTradeOff; }
00273 
00276     BOOL GetHrd_B() const
00277       { return hrd_B; }
00278 
00281     BOOL GetBppMaxKb() const
00282       { return bppMaxKb; }
00283 
00286     unsigned GetSlowSQCIFMPI() const
00287       { return (sqcifMPI<0?-sqcifMPI:0); }
00288 
00291     unsigned GetSlowQCIFMPI() const
00292       { return (qcifMPI<0?-qcifMPI:0); }
00293 
00296     unsigned GetSlowCIFMPI() const
00297       { return (cifMPI<0?-cifMPI:0); }
00298 
00301     unsigned GetSlowCIF4MPI() const
00302       { return (cif4MPI<0?-cif4MPI:0); }
00303 
00306     unsigned GetSlowCIF16MPI() const
00307       { return (cif16MPI<0?-cif16MPI:0); }
00308 
00311     BOOL GetErrorCompensationCapability() const
00312       { return errorCompensation; }
00313 #endif
00314 
00316 
00317 protected:
00318     // H.263 v1
00319     signed sqcifMPI;            // {1..3600 units seconds/frame, 1..32 units 1/29.97 Hz}
00320     signed qcifMPI;             // {1..3600 units seconds/frame, 1..32 units 1/29.97 Hz}
00321     signed cifMPI;              // {1..3600 units seconds/frame, 1..32 units 1/29.97 Hz}
00322     signed cif4MPI;             // {1..3600 units seconds/frame, 1..32 units 1/29.97 Hz}
00323     signed cif16MPI;            // {1..3600 units seconds/frame, 1..32 units 1/29.97 Hz}
00324 
00325     unsigned maxBitRate;        // units of bit/s
00326     unsigned videoFrameRate;   // frames per second.
00327 
00328     BOOL     unrestrictedVector;
00329     BOOL     arithmeticCoding;
00330     BOOL     advancedPrediction;
00331     BOOL     pbFrames;
00332     BOOL     temporalSpatialTradeOff;
00333 
00334     long unsigned hrd_B;        // units of 128 bits
00335     unsigned bppMaxKb;          // units of 1024 bits
00336 
00337     BOOL     errorCompensation;
00338 };
00339 
00341 
00343 class H323_H263Codec : public H323VideoCodec
00344 {
00345   PCLASSINFO(H323_H263Codec, H323VideoCodec)
00346 
00347   public:
00350     H323_H263Codec(
00351       Direction direction,      
00352       unsigned sqcifMPI,
00353       unsigned qcifMPI,
00354       unsigned cifMPI,
00355       unsigned cif4MPI,
00356       unsigned cif16MPI,
00357       unsigned maxBitRate,
00358       unsigned videoFrameRate
00359     );
00360 
00361     ~H323_H263Codec();
00362 
00379     virtual BOOL Read(
00380       BYTE * buffer,            
00381       unsigned & length,        
00382       RTP_DataFrame & rtpFrame  
00383     );
00384 
00397     virtual BOOL Write(
00398       const BYTE * buffer,        
00399       unsigned length,            
00400       const RTP_DataFrame & rtp,  
00401       unsigned & written          
00402     );
00403 
00406     virtual unsigned GetFrameRate() const { return timestampDelta; }
00407 
00413     void SetTxQualityLevel(int qLevel);
00414  
00418     void SetBackgroundFill(int fillLevel);
00419 
00423     virtual void OnLostPartialPicture();
00424 
00429     virtual void OnLostPicture();
00430 
00436     static void RtpCallback(void *data, int size, int packetNumber);
00437 
00438   protected:
00439     BOOL Resize(int width, int height);
00440 
00441     BOOL RenderFrame(); 
00442     BOOL RenderFrame(const void * buffer);
00443 
00444 
00445 
00446     void InitialiseCodec();
00447     void CloseCodec();
00448 
00449 
00450     unsigned timestampDelta;
00451 
00452     H263Decoder *videoDecoder;
00453     H263Encoder *videoEncoder;
00454 
00455     int now;
00456     BYTE * rvts;
00457     int ndblk, nblk;
00458    
00459     PTime           startTime;
00460     PINDEX          bitsSent;
00461 
00462     unsigned        lastebits;
00463 };
00464 
00465 #endif // H323_VICH263
00466 #endif // __OPAL_H263CODEC_H
00467 
00468 
00469 
00470 

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