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74 lines
1.3 KiB
74 lines
1.3 KiB
15 years ago
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/*
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reads/parse slice infos
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Copyright (C) 1999 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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#include "slice.h"
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Slice::Slice() {
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mpegExtension=new MpegExtension();
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}
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Slice::~Slice() {
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delete mpegExtension;
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}
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unsigned int Slice::getVertPos() {
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return vert_pos;
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}
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void Slice::setQuantScale(unsigned int quant_scale) {
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this->quant_scale=quant_scale;
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}
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/*
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*--------------------------------------------------------------
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*
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* ParseSlice --
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*
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* Parses off slice header.
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*
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* Results:
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* Values found in slice header put into video stream structure.
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*
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* Side effects:
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* Bit stream irreversibly parsed.
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*
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*--------------------------------------------------------------
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*/
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int Slice::parseSlice(MpegVideoStream* mpegVideoStream) {
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/* Flush slice start code. */
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mpegVideoStream->flushBits(24);
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/* Parse off slice vertical position. */
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/* its the "slice number" */
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vert_pos=mpegVideoStream->getBits(8);
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/* Parse off quantization scale. */
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quant_scale=mpegVideoStream->getBits(5);
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/* Parse off extra bit slice info. */
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mpegExtension->processExtra_bit_info(mpegVideoStream);
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return true;
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}
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