48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; 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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#ifndef AVFILTER_QP_TABLE_H
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#define AVFILTER_QP_TABLE_H
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#include <stdint.h>
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#include "libavutil/frame.h"
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#include "libavutil/video_enc_params.h"
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/**
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* Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16
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* macroblock, stored in raster order - from AVVideoEncParams side data.
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*/
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int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h,
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enum AVVideoEncParamsType *qscale_type);
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/**
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* Normalize the qscale factor
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* FIXME Add support for other values of enum AVVideoEncParamsType
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* besides AV_VIDEO_ENC_PARAMS_MPEG2.
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*/
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static inline int ff_norm_qscale(int qscale, enum AVVideoEncParamsType type)
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{
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switch (type) {
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case AV_VIDEO_ENC_PARAMS_MPEG2: return qscale >> 1;
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}
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return qscale;
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}
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#endif // AVFILTER_QP_TABLE_H
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