| /********** |
| 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 2.1 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) 1996-2015 Live Networks, Inc. All rights reserved. |
| // A class for streaming data from a (static) memory buffer, as if it were a file. |
| // C++ header |
| |
| #ifndef _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH |
| #define _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH |
| |
| #ifndef _FRAMED_SOURCE_HH |
| #include "FramedSource.hh" |
| #endif |
| |
| class ByteStreamMemoryBufferSource: public FramedSource { |
| public: |
| static ByteStreamMemoryBufferSource* createNew(UsageEnvironment& env, |
| u_int8_t* buffer, u_int64_t bufferSize, |
| Boolean deleteBufferOnClose = True, |
| unsigned preferredFrameSize = 0, |
| unsigned playTimePerFrame = 0); |
| // "preferredFrameSize" == 0 means 'no preference' |
| // "playTimePerFrame" is in microseconds |
| |
| u_int64_t bufferSize() const { return fBufferSize; } |
| |
| void seekToByteAbsolute(u_int64_t byteNumber, u_int64_t numBytesToStream = 0); |
| // if "numBytesToStream" is >0, then we limit the stream to that number of bytes, before treating it as EOF |
| void seekToByteRelative(int64_t offset, u_int64_t numBytesToStream = 0); |
| |
| protected: |
| ByteStreamMemoryBufferSource(UsageEnvironment& env, |
| u_int8_t* buffer, u_int64_t bufferSize, |
| Boolean deleteBufferOnClose, |
| unsigned preferredFrameSize, |
| unsigned playTimePerFrame); |
| // called only by createNew() |
| |
| virtual ~ByteStreamMemoryBufferSource(); |
| |
| private: |
| // redefined virtual functions: |
| virtual void doGetNextFrame(); |
| |
| private: |
| u_int8_t* fBuffer; |
| u_int64_t fBufferSize; |
| u_int64_t fCurIndex; |
| Boolean fDeleteBufferOnClose; |
| unsigned fPreferredFrameSize; |
| unsigned fPlayTimePerFrame; |
| unsigned fLastPlayTime; |
| Boolean fLimitNumBytesToStream; |
| u_int64_t fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True |
| }; |
| |
| #endif |