| /********** |
| This library is free software; you can redistribute it and/or modify it under |
| the terms of the GNU Lesser General Public License as published by the |
| Free Software Foundation; either version 3 of the License, or (at your |
| option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) |
| |
| This library is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
| more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with this library; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| **********/ |
| // "liveMedia" |
| // Copyright (c) 1996-2020 Live Networks, Inc. All rights reserved. |
| // A filter that breaks up an MPEG-4 video elementary stream into |
| // frames for: |
| // - Visual Object Sequence (VS) Header + Visual Object (VO) Header |
| // + Video Object Layer (VOL) Header |
| // - Group of VOP (GOV) Header |
| // - VOP frame |
| // C++ header |
| |
| #ifndef _MPEG4_VIDEO_STREAM_FRAMER_HH |
| #define _MPEG4_VIDEO_STREAM_FRAMER_HH |
| |
| #ifndef _MPEG_VIDEO_STREAM_FRAMER_HH |
| #include "MPEGVideoStreamFramer.hh" |
| #endif |
| |
| class MPEG4VideoStreamFramer: public MPEGVideoStreamFramer { |
| public: |
| static MPEG4VideoStreamFramer* |
| createNew(UsageEnvironment& env, FramedSource* inputSource); |
| |
| u_int8_t profile_and_level_indication() const { |
| return fProfileAndLevelIndication; |
| } |
| |
| unsigned char* getConfigBytes(unsigned& numBytes) const; |
| |
| void setConfigInfo(u_int8_t profileAndLevelIndication, char const* configStr); |
| // Assigns the "profile_and_level_indication" number, and the 'config' bytes. |
| // If this function is not called, then this data is only assigned later, when it appears in the input stream. |
| |
| protected: |
| MPEG4VideoStreamFramer(UsageEnvironment& env, |
| FramedSource* inputSource, |
| Boolean createParser = True); |
| // called only by createNew(), or by subclass constructors |
| virtual ~MPEG4VideoStreamFramer(); |
| |
| void startNewConfig(); |
| void appendToNewConfig(unsigned char* newConfigBytes, |
| unsigned numNewBytes); |
| void completeNewConfig(); |
| |
| private: |
| // redefined virtual functions: |
| virtual Boolean isMPEG4VideoStreamFramer() const; |
| |
| protected: |
| u_int8_t fProfileAndLevelIndication; |
| unsigned char* fConfigBytes; |
| unsigned fNumConfigBytes; |
| |
| private: |
| unsigned char* fNewConfigBytes; |
| unsigned fNumNewConfigBytes; |
| friend class MPEG4VideoStreamParser; // hack |
| }; |
| |
| #endif |