PTLib
Version 2.10.4
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00001 /* 00002 * pvfiledev.cxx 00003 * 00004 * Video file declaration 00005 * 00006 * Portable Windows Library 00007 * 00008 * Copyright (C) 2004 Post Increment 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 Portable Windows Library. 00021 * 00022 * The Initial Developer of the Original Code is 00023 * Craig Southeren <craigs@postincrement.com> 00024 * 00025 * All Rights Reserved. 00026 * 00027 * Contributor(s): ______________________________________. 00028 * 00029 * $Revision: 25197 $ 00030 * $Author: rjongbloed $ 00031 * $Date: 2011-02-24 21:03:12 -0600 (Thu, 24 Feb 2011) $ 00032 */ 00033 00034 #ifndef PTLIB_PVFILEDEV_H 00035 #define PTLIB_PVFILEDEV_H 00036 00037 #ifdef P_USE_PRAGMA 00038 #pragma interface 00039 #endif 00040 00041 #include <ptlib.h> 00042 00043 #if P_VIDEO 00044 #if P_VIDFILE 00045 00046 #include <ptlib.h> 00047 #include <ptlib/video.h> 00048 #include <ptlib/vconvert.h> 00049 #include <ptclib/pvidfile.h> 00050 #include <ptclib/delaychan.h> 00051 00052 00054 // 00055 // This class defines a video capture (input) device that reads video from a raw YUV file 00056 // 00057 00058 class PVideoInputDevice_YUVFile : public PVideoInputDevice 00059 { 00060 PCLASSINFO(PVideoInputDevice_YUVFile, PVideoInputDevice); 00061 public: 00062 enum { 00063 Channel_PlayAndClose = 0, 00064 Channel_PlayAndRepeat = 1, 00065 Channel_PlayAndKeepLast = 2, 00066 Channel_PlayAndShowBlack = 3, 00067 ChannelCount = 4 00068 }; 00069 00072 PVideoInputDevice_YUVFile(); 00073 00076 virtual ~PVideoInputDevice_YUVFile(); 00077 00078 00081 PBoolean Open( 00082 const PString & deviceName, 00083 PBoolean startImmediate = true 00084 ); 00085 00088 PBoolean IsOpen() ; 00089 00092 PBoolean Close(); 00093 00096 PBoolean Start(); 00097 00100 PBoolean Stop(); 00101 00104 PBoolean IsCapturing(); 00105 00108 static PStringArray GetInputDeviceNames(); 00109 00110 virtual PStringArray GetDeviceNames() const 00111 { return GetInputDeviceNames(); } 00112 00115 static bool GetDeviceCapabilities( 00116 const PString & /*deviceName*/, 00117 Capabilities * /*caps*/ 00118 ) { return false; } 00119 00125 virtual PINDEX GetMaxFrameBytes(); 00126 00131 virtual PBoolean GetFrameData( 00132 BYTE * buffer, 00133 PINDEX * bytesReturned = NULL 00134 ); 00135 00140 virtual PBoolean GetFrameDataNoDelay( 00141 BYTE * buffer, 00142 PINDEX * bytesReturned = NULL 00143 ); 00144 00145 00151 virtual PBoolean SetVideoFormat( 00152 VideoFormat videoFormat 00153 ); 00154 00159 virtual int GetNumChannels() ; 00160 00170 virtual PBoolean SetChannel( 00171 int channelNumber 00172 ); 00173 00179 virtual PBoolean SetColourFormat( 00180 const PString & colourFormat // New colour format for device. 00181 ); 00182 00188 virtual PBoolean SetFrameRate( 00189 unsigned rate 00190 ); 00191 00197 virtual PBoolean GetFrameSizeLimits( 00198 unsigned & minWidth, 00199 unsigned & minHeight, 00200 unsigned & maxWidth, 00201 unsigned & maxHeight 00202 ) ; 00203 00209 virtual PBoolean SetFrameSize( 00210 unsigned width, 00211 unsigned height 00212 ); 00213 00214 00215 protected: 00216 PVideoFile * m_file; 00217 PAdaptiveDelay m_pacing; 00218 unsigned m_frameRateAdjust; 00219 }; 00220 00221 00223 // 00224 // This class defines a video display (output) device that writes video to a raw YUV file 00225 // 00226 00227 class PVideoOutputDevice_YUVFile : public PVideoOutputDevice 00228 { 00229 PCLASSINFO(PVideoOutputDevice_YUVFile, PVideoOutputDevice); 00230 00231 public: 00234 PVideoOutputDevice_YUVFile(); 00235 00238 virtual ~PVideoOutputDevice_YUVFile(); 00239 00242 static PStringArray GetOutputDeviceNames(); 00243 00244 virtual PStringArray GetDeviceNames() const 00245 { return GetOutputDeviceNames(); } 00246 00249 virtual PBoolean Open( 00250 const PString & deviceName, 00251 PBoolean startImmediate = true 00252 ); 00253 00256 PBoolean Start(); 00257 00260 PBoolean Stop(); 00261 00264 virtual PBoolean Close(); 00265 00268 virtual PBoolean IsOpen(); 00269 00275 virtual PBoolean SetColourFormat( 00276 const PString & colourFormat // New colour format for device. 00277 ); 00278 00284 virtual PINDEX GetMaxFrameBytes(); 00285 00288 virtual PBoolean SetFrameData( 00289 unsigned x, 00290 unsigned y, 00291 unsigned width, 00292 unsigned height, 00293 const BYTE * data, 00294 PBoolean endFrame = true 00295 ); 00296 00297 protected: 00298 PVideoFile * m_file; 00299 }; 00300 00301 00302 #endif // P_VIDFILE 00303 #endif 00304 00305 #endif // PTLIB_PVFILEDEV_H 00306 00307 00308 // End Of File ///////////////////////////////////////////////////////////////