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| | | /********** |
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| | | This library is free software; you can redistribute it and/or modify it under |
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| | | the terms of the GNU Lesser General Public License as published by the |
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| | | Free Software Foundation; either version 3 of the License, or (at your |
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| | | option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) |
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| | | |
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| | | This library is distributed in the hope that it will be useful, but WITHOUT |
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| | | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| | | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
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| | | more details. |
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| | | |
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| | | You should have received a copy of the GNU Lesser General Public License |
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| | | along with this library; if not, write to the Free Software Foundation, Inc., |
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| | | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| | | **********/ |
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| | | // "liveMedia" |
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| | | // Copyright (c) 1996-2017 Live Networks, Inc. All rights reserved. |
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| | | // Transcoder for ADUized MP3 frames |
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| | | // C++ header |
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| | | |
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| | | #ifndef _MP3_ADU_TRANSCODER_HH |
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| | | #define _MP3_ADU_TRANSCODER_HH |
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| | | |
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| | | #ifndef _FRAMED_FILTER_HH |
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| | | #include "FramedFilter.hh" |
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| | | #endif |
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| | | |
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| | | class MP3ADUTranscoder: public FramedFilter { |
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| | | public: |
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| | | static MP3ADUTranscoder* createNew(UsageEnvironment& env, |
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| | | unsigned outBitrate /* in kbps */, |
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| | | FramedSource* inputSource); |
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| | | |
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| | | unsigned outBitrate() const { return fOutBitrate; } |
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| | | protected: |
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| | | MP3ADUTranscoder(UsageEnvironment& env, |
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| | | unsigned outBitrate /* in kbps */, |
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| | | FramedSource* inputSource); |
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| | | // called only by createNew() |
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| | | virtual ~MP3ADUTranscoder(); |
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| | | |
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| | | private: |
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| | | // redefined virtual functions: |
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| | | virtual void doGetNextFrame(); |
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| | | virtual void getAttributes() const; |
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| | | |
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| | | private: |
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| | | static void afterGettingFrame(void* clientData, |
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| | | unsigned numBytesRead, unsigned numTruncatedBytes, |
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| | | struct timeval presentationTime, |
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| | | unsigned durationInMicroseconds); |
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| | | void afterGettingFrame1(unsigned numBytesRead, unsigned numTruncatedBytes, |
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| | | struct timeval presentationTime, |
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| | | unsigned durationInMicroseconds); |
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| | | |
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| | | private: |
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| | | unsigned fOutBitrate; // in kbps |
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| | | unsigned fAvailableBytesForBackpointer; |
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| | | |
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| | | unsigned char* fOrigADU; |
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| | | // used to store incoming ADU prior to transcoding |
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| | | }; |
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| | | |
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| | | #endif |
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