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67 lines
1.4 KiB
67 lines
1.4 KiB
/*
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converts raw mpeg audio stream data into mpeg I encoded audio frames/packets
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Copyright (C) 2001 Martin Vogt
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation.
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For more information look at the file COPYRIGHT in this package
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*/
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#ifndef __MPEGAUDIOFRAME_H
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#define __MPEGAUDIOFRAME_H
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#include "mpegAudioHeader.h"
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#include "../frame/framer.h"
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#include <kdemacros.h>
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/*
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Here we are framing from raw to mpeg audio.
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*/
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class KDE_EXPORT MpegAudioFrame : public Framer {
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// max size of buffer is:
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// header: 4
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// max bitrate: 448
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// min freq: 22050
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// padding: 1
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// ------------------
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// maxsize: 4+144000*max(bitrate)/min(freq)+1 ca: 2931 byte
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// then we add a "sentinel" at the end these are 4 byte.
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// so we should be ok, with a 4KB buffer.
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// internal, how much data we need to read
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int framesize;
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// internall, for header searching
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int find_frame_state;
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// internal use for header parsing+validating
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MpegAudioHeader* mpegAudioHeader;
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public:
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MpegAudioFrame();
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~MpegAudioFrame();
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private:
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int find_frame(RawDataBuffer* input,RawDataBuffer* store);
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int read_frame(RawDataBuffer* input,RawDataBuffer* store);
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void unsync(RawDataBuffer* store,int lReset);
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void printPrivateStates();
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};
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#endif
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