ffmpeg / libavcodec / ffv1.c @ 676d380f
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/*
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* FFV1 codec for libavcodec
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*
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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*
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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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* FF Video Codec 1 (a lossless codec)
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*/
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#include "avcodec.h" |
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#include "get_bits.h" |
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#include "put_bits.h" |
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#include "dsputil.h" |
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#include "rangecoder.h" |
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#include "golomb.h" |
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#include "mathops.h" |
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#include "libavutil/avassert.h" |
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|
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#define MAX_PLANES 4 |
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#define CONTEXT_SIZE 32 |
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|
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#define MAX_QUANT_TABLES 8 |
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#define MAX_CONTEXT_INPUTS 5 |
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|
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extern const uint8_t ff_log2_run[41]; |
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|
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static const int8_t quant3[256]={ |
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0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0, |
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}; |
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|
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static const int8_t quant5_10bit[256]={ |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
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1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
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-1,-1,-1,-1,-1,-1,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0, |
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}; |
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static const int8_t quant5[256]={ |
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0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1, |
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}; |
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static const int8_t quant7[256]={ |
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0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1, |
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}; |
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static const int8_t quant9[256]={ |
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0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1, |
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}; |
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static const int8_t quant9_10bit[256]={ |
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0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, |
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
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-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
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-2,-2,-2,-2,-1,-1,-1,-1,-1,-1,-1,-1,-0,-0,-0,-0, |
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}; |
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|
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static const int8_t quant11[256]={ |
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0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, |
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
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-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
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-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
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-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
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-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 170 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4, |
| 171 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
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-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1, |
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}; |
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static const int8_t quant13[256]={ |
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0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, |
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4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 178 |
5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 184 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 185 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 186 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 187 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5, |
| 188 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 189 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 190 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1, |
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}; |
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|
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static const uint8_t ver2_state[256]= { |
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0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49, |
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59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39, |
| 196 |
40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52, |
| 197 |
53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69, |
| 198 |
87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97, |
| 199 |
85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98, |
| 200 |
105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125, |
| 201 |
115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129, |
| 202 |
165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148, |
| 203 |
147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160, |
| 204 |
172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178, |
| 205 |
175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196, |
| 206 |
197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214, |
| 207 |
209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225, |
| 208 |
226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242, |
| 209 |
241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255, |
| 210 |
}; |
| 211 |
|
| 212 |
typedef struct VlcState{ |
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int16_t drift; |
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uint16_t error_sum; |
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int8_t bias; |
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uint8_t count; |
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} VlcState; |
| 218 |
|
| 219 |
typedef struct PlaneContext{ |
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int16_t quant_table[MAX_CONTEXT_INPUTS][256];
|
| 221 |
int quant_table_index;
|
| 222 |
int context_count;
|
| 223 |
uint8_t (*state)[CONTEXT_SIZE]; |
| 224 |
VlcState *vlc_state; |
| 225 |
uint8_t interlace_bit_state[2];
|
| 226 |
} PlaneContext; |
| 227 |
|
| 228 |
#define MAX_SLICES 256 |
| 229 |
|
| 230 |
typedef struct FFV1Context{ |
| 231 |
AVCodecContext *avctx; |
| 232 |
RangeCoder c; |
| 233 |
GetBitContext gb; |
| 234 |
PutBitContext pb; |
| 235 |
uint64_t rc_stat[256][2]; |
| 236 |
uint64_t (*rc_stat2[MAX_QUANT_TABLES])[32][2]; |
| 237 |
int version;
|
| 238 |
int width, height;
|
| 239 |
int chroma_h_shift, chroma_v_shift;
|
| 240 |
int flags;
|
| 241 |
int picture_number;
|
| 242 |
AVFrame picture; |
| 243 |
int plane_count;
|
| 244 |
int ac; ///< 1=range coder <-> 0=golomb rice |
| 245 |
PlaneContext plane[MAX_PLANES]; |
| 246 |
int16_t quant_table[MAX_CONTEXT_INPUTS][256];
|
| 247 |
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
|
| 248 |
int context_count[MAX_QUANT_TABLES];
|
| 249 |
uint8_t state_transition[256];
|
| 250 |
uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
|
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int run_index;
|
| 252 |
int colorspace;
|
| 253 |
int_fast16_t *sample_buffer; |
| 254 |
int gob_count;
|
| 255 |
|
| 256 |
int quant_table_count;
|
| 257 |
|
| 258 |
DSPContext dsp; |
| 259 |
|
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struct FFV1Context *slice_context[MAX_SLICES];
|
| 261 |
int slice_count;
|
| 262 |
int num_v_slices;
|
| 263 |
int num_h_slices;
|
| 264 |
int slice_width;
|
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int slice_height;
|
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int slice_x;
|
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int slice_y;
|
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}FFV1Context; |
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|
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static av_always_inline int fold(int diff, int bits){ |
| 271 |
if(bits==8) |
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diff= (int8_t)diff; |
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else{
|
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diff+= 1<<(bits-1); |
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diff&=(1<<bits)-1; |
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diff-= 1<<(bits-1); |
| 277 |
} |
| 278 |
|
| 279 |
return diff;
|
| 280 |
} |
| 281 |
|
| 282 |
static inline int predict(int_fast16_t *src, int_fast16_t *last){ |
| 283 |
const int LT= last[-1]; |
| 284 |
const int T= last[ 0]; |
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const int L = src[-1]; |
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|
| 287 |
return mid_pred(L, L + T - LT, T);
|
| 288 |
} |
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|
| 290 |
static inline int get_context(PlaneContext *p, int_fast16_t *src, int_fast16_t *last, int_fast16_t *last2){ |
| 291 |
const int LT= last[-1]; |
| 292 |
const int T= last[ 0]; |
| 293 |
const int RT= last[ 1]; |
| 294 |
const int L = src[-1]; |
| 295 |
|
| 296 |
if(p->quant_table[3][127]){ |
| 297 |
const int TT= last2[0]; |
| 298 |
const int LL= src[-2]; |
| 299 |
return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF] |
| 300 |
+p->quant_table[3][(LL-L) & 0xFF] + p->quant_table[4][(TT-T) & 0xFF]; |
| 301 |
}else
|
| 302 |
return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF]; |
| 303 |
} |
| 304 |
|
| 305 |
static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256]){ |
| 306 |
int i,j,k,m;
|
| 307 |
double l2tab[256]; |
| 308 |
|
| 309 |
for(i=1; i<256; i++) |
| 310 |
l2tab[i]= log2(i/256.0); |
| 311 |
|
| 312 |
for(i=0; i<256; i++){ |
| 313 |
double best_len[256]; |
| 314 |
double p= i/256.0; |
| 315 |
|
| 316 |
for(j=0; j<256; j++) |
| 317 |
best_len[j]= 1<<30; |
| 318 |
|
| 319 |
for(j=FFMAX(i-10,1); j<FFMIN(i+11,256); j++){ |
| 320 |
double occ[256]={0}; |
| 321 |
double len=0; |
| 322 |
occ[j]=1.0; |
| 323 |
for(k=0; k<256; k++){ |
| 324 |
double newocc[256]={0}; |
| 325 |
for(m=0; m<256; m++){ |
| 326 |
if(occ[m]){
|
| 327 |
len -=occ[m]*( p *l2tab[ m] |
| 328 |
+ (1-p)*l2tab[256-m]); |
| 329 |
} |
| 330 |
} |
| 331 |
if(len < best_len[k]){
|
| 332 |
best_len[k]= len; |
| 333 |
best_state[i][k]= j; |
| 334 |
} |
| 335 |
for(m=0; m<256; m++){ |
| 336 |
if(occ[m]){
|
| 337 |
newocc[ one_state[ m]] += occ[m]* p ; |
| 338 |
newocc[256-one_state[256-m]] += occ[m]*(1-p); |
| 339 |
} |
| 340 |
} |
| 341 |
memcpy(occ, newocc, sizeof(occ));
|
| 342 |
} |
| 343 |
} |
| 344 |
} |
| 345 |
} |
| 346 |
|
| 347 |
static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2]){ |
| 348 |
int i;
|
| 349 |
|
| 350 |
#define put_rac(C,S,B) \
|
| 351 |
do{\
|
| 352 |
if(rc_stat){\
|
| 353 |
rc_stat[*(S)][B]++;\ |
| 354 |
rc_stat2[(S)-state][B]++;\ |
| 355 |
}\ |
| 356 |
put_rac(C,S,B);\ |
| 357 |
}while(0) |
| 358 |
|
| 359 |
if(v){
|
| 360 |
const int a= FFABS(v); |
| 361 |
const int e= av_log2(a); |
| 362 |
put_rac(c, state+0, 0); |
| 363 |
if(e<=9){ |
| 364 |
for(i=0; i<e; i++){ |
| 365 |
put_rac(c, state+1+i, 1); //1..10 |
| 366 |
} |
| 367 |
put_rac(c, state+1+i, 0); |
| 368 |
|
| 369 |
for(i=e-1; i>=0; i--){ |
| 370 |
put_rac(c, state+22+i, (a>>i)&1); //22..31 |
| 371 |
} |
| 372 |
|
| 373 |
if(is_signed)
|
| 374 |
put_rac(c, state+11 + e, v < 0); //11..21 |
| 375 |
}else{
|
| 376 |
for(i=0; i<e; i++){ |
| 377 |
put_rac(c, state+1+FFMIN(i,9), 1); //1..10 |
| 378 |
} |
| 379 |
put_rac(c, state+1+9, 0); |
| 380 |
|
| 381 |
for(i=e-1; i>=0; i--){ |
| 382 |
put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31 |
| 383 |
} |
| 384 |
|
| 385 |
if(is_signed)
|
| 386 |
put_rac(c, state+11 + 10, v < 0); //11..21 |
| 387 |
} |
| 388 |
}else{
|
| 389 |
put_rac(c, state+0, 1); |
| 390 |
} |
| 391 |
#undef put_rac
|
| 392 |
} |
| 393 |
|
| 394 |
static void av_noinline put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){ |
| 395 |
put_symbol_inline(c, state, v, is_signed, NULL, NULL); |
| 396 |
} |
| 397 |
|
| 398 |
static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed){ |
| 399 |
if(get_rac(c, state+0)) |
| 400 |
return 0; |
| 401 |
else{
|
| 402 |
int i, e, a;
|
| 403 |
e= 0;
|
| 404 |
while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10 |
| 405 |
e++; |
| 406 |
} |
| 407 |
|
| 408 |
a= 1;
|
| 409 |
for(i=e-1; i>=0; i--){ |
| 410 |
a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31 |
| 411 |
} |
| 412 |
|
| 413 |
e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21 |
| 414 |
return (a^e)-e;
|
| 415 |
} |
| 416 |
} |
| 417 |
|
| 418 |
static int av_noinline get_symbol(RangeCoder *c, uint8_t *state, int is_signed){ |
| 419 |
return get_symbol_inline(c, state, is_signed);
|
| 420 |
} |
| 421 |
|
| 422 |
static inline void update_vlc_state(VlcState * const state, const int v){ |
| 423 |
int drift= state->drift;
|
| 424 |
int count= state->count;
|
| 425 |
state->error_sum += FFABS(v); |
| 426 |
drift += v; |
| 427 |
|
| 428 |
if(count == 128){ //FIXME variable |
| 429 |
count >>= 1;
|
| 430 |
drift >>= 1;
|
| 431 |
state->error_sum >>= 1;
|
| 432 |
} |
| 433 |
count++; |
| 434 |
|
| 435 |
if(drift <= -count){
|
| 436 |
if(state->bias > -128) state->bias--; |
| 437 |
|
| 438 |
drift += count; |
| 439 |
if(drift <= -count)
|
| 440 |
drift= -count + 1;
|
| 441 |
}else if(drift > 0){ |
| 442 |
if(state->bias < 127) state->bias++; |
| 443 |
|
| 444 |
drift -= count; |
| 445 |
if(drift > 0) |
| 446 |
drift= 0;
|
| 447 |
} |
| 448 |
|
| 449 |
state->drift= drift; |
| 450 |
state->count= count; |
| 451 |
} |
| 452 |
|
| 453 |
static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v, int bits){ |
| 454 |
int i, k, code;
|
| 455 |
//printf("final: %d ", v);
|
| 456 |
v = fold(v - state->bias, bits); |
| 457 |
|
| 458 |
i= state->count; |
| 459 |
k=0;
|
| 460 |
while(i < state->error_sum){ //FIXME optimize |
| 461 |
k++; |
| 462 |
i += i; |
| 463 |
} |
| 464 |
|
| 465 |
assert(k<=8);
|
| 466 |
|
| 467 |
#if 0 // JPEG LS
|
| 468 |
if(k==0 && 2*state->drift <= - state->count) code= v ^ (-1);
|
| 469 |
else code= v;
|
| 470 |
#else
|
| 471 |
code= v ^ ((2*state->drift + state->count)>>31); |
| 472 |
#endif
|
| 473 |
|
| 474 |
//printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k);
|
| 475 |
set_sr_golomb(pb, code, k, 12, bits);
|
| 476 |
|
| 477 |
update_vlc_state(state, v); |
| 478 |
} |
| 479 |
|
| 480 |
static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){ |
| 481 |
int k, i, v, ret;
|
| 482 |
|
| 483 |
i= state->count; |
| 484 |
k=0;
|
| 485 |
while(i < state->error_sum){ //FIXME optimize |
| 486 |
k++; |
| 487 |
i += i; |
| 488 |
} |
| 489 |
|
| 490 |
assert(k<=8);
|
| 491 |
|
| 492 |
v= get_sr_golomb(gb, k, 12, bits);
|
| 493 |
//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);
|
| 494 |
|
| 495 |
#if 0 // JPEG LS
|
| 496 |
if(k==0 && 2*state->drift <= - state->count) v ^= (-1);
|
| 497 |
#else
|
| 498 |
v ^= ((2*state->drift + state->count)>>31); |
| 499 |
#endif
|
| 500 |
|
| 501 |
ret= fold(v + state->bias, bits); |
| 502 |
|
| 503 |
update_vlc_state(state, v); |
| 504 |
//printf("final: %d\n", ret);
|
| 505 |
return ret;
|
| 506 |
} |
| 507 |
|
| 508 |
#if CONFIG_FFV1_ENCODER
|
| 509 |
static av_always_inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){ |
| 510 |
PlaneContext * const p= &s->plane[plane_index];
|
| 511 |
RangeCoder * const c= &s->c;
|
| 512 |
int x;
|
| 513 |
int run_index= s->run_index;
|
| 514 |
int run_count=0; |
| 515 |
int run_mode=0; |
| 516 |
|
| 517 |
if(s->ac){
|
| 518 |
if(c->bytestream_end - c->bytestream < w*20){ |
| 519 |
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
|
| 520 |
return -1; |
| 521 |
} |
| 522 |
}else{
|
| 523 |
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < w*4){ |
| 524 |
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
|
| 525 |
return -1; |
| 526 |
} |
| 527 |
} |
| 528 |
|
| 529 |
for(x=0; x<w; x++){ |
| 530 |
int diff, context;
|
| 531 |
|
| 532 |
context= get_context(p, sample[0]+x, sample[1]+x, sample[2]+x); |
| 533 |
diff= sample[0][x] - predict(sample[0]+x, sample[1]+x); |
| 534 |
|
| 535 |
if(context < 0){ |
| 536 |
context = -context; |
| 537 |
diff= -diff; |
| 538 |
} |
| 539 |
|
| 540 |
diff= fold(diff, bits); |
| 541 |
|
| 542 |
if(s->ac){
|
| 543 |
if(s->flags & CODEC_FLAG_PASS1){
|
| 544 |
put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat, s->rc_stat2[p->quant_table_index][context]);
|
| 545 |
}else{
|
| 546 |
put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL); |
| 547 |
} |
| 548 |
}else{
|
| 549 |
if(context == 0) run_mode=1; |
| 550 |
|
| 551 |
if(run_mode){
|
| 552 |
|
| 553 |
if(diff){
|
| 554 |
while(run_count >= 1<<ff_log2_run[run_index]){ |
| 555 |
run_count -= 1<<ff_log2_run[run_index];
|
| 556 |
run_index++; |
| 557 |
put_bits(&s->pb, 1, 1); |
| 558 |
} |
| 559 |
|
| 560 |
put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
|
| 561 |
if(run_index) run_index--;
|
| 562 |
run_count=0;
|
| 563 |
run_mode=0;
|
| 564 |
if(diff>0) diff--; |
| 565 |
}else{
|
| 566 |
run_count++; |
| 567 |
} |
| 568 |
} |
| 569 |
|
| 570 |
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)put_bits_count(&s->pb));
|
| 571 |
|
| 572 |
if(run_mode == 0) |
| 573 |
put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits); |
| 574 |
} |
| 575 |
} |
| 576 |
if(run_mode){
|
| 577 |
while(run_count >= 1<<ff_log2_run[run_index]){ |
| 578 |
run_count -= 1<<ff_log2_run[run_index];
|
| 579 |
run_index++; |
| 580 |
put_bits(&s->pb, 1, 1); |
| 581 |
} |
| 582 |
|
| 583 |
if(run_count)
|
| 584 |
put_bits(&s->pb, 1, 1); |
| 585 |
} |
| 586 |
s->run_index= run_index; |
| 587 |
|
| 588 |
return 0; |
| 589 |
} |
| 590 |
|
| 591 |
static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ |
| 592 |
int x,y,i;
|
| 593 |
const int ring_size= s->avctx->context_model ? 3 : 2; |
| 594 |
int_fast16_t *sample[3];
|
| 595 |
s->run_index=0;
|
| 596 |
|
| 597 |
memset(s->sample_buffer, 0, ring_size*(w+6)*sizeof(*s->sample_buffer)); |
| 598 |
|
| 599 |
for(y=0; y<h; y++){ |
| 600 |
for(i=0; i<ring_size; i++) |
| 601 |
sample[i]= s->sample_buffer + (w+6)*((h+i-y)%ring_size) + 3; |
| 602 |
|
| 603 |
sample[0][-1]= sample[1][0 ]; |
| 604 |
sample[1][ w]= sample[1][w-1]; |
| 605 |
//{START_TIMER
|
| 606 |
if(s->avctx->bits_per_raw_sample<=8){ |
| 607 |
for(x=0; x<w; x++){ |
| 608 |
sample[0][x]= src[x + stride*y];
|
| 609 |
} |
| 610 |
encode_line(s, w, sample, plane_index, 8);
|
| 611 |
}else{
|
| 612 |
for(x=0; x<w; x++){ |
| 613 |
sample[0][x]= ((uint16_t*)(src + stride*y))[x] >> (16 - s->avctx->bits_per_raw_sample); |
| 614 |
} |
| 615 |
encode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| 616 |
} |
| 617 |
//STOP_TIMER("encode line")}
|
| 618 |
} |
| 619 |
} |
| 620 |
|
| 621 |
static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ |
| 622 |
int x, y, p, i;
|
| 623 |
const int ring_size= s->avctx->context_model ? 3 : 2; |
| 624 |
int_fast16_t *sample[3][3]; |
| 625 |
s->run_index=0;
|
| 626 |
|
| 627 |
memset(s->sample_buffer, 0, ring_size*3*(w+6)*sizeof(*s->sample_buffer)); |
| 628 |
|
| 629 |
for(y=0; y<h; y++){ |
| 630 |
for(i=0; i<ring_size; i++) |
| 631 |
for(p=0; p<3; p++) |
| 632 |
sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3; |
| 633 |
|
| 634 |
for(x=0; x<w; x++){ |
| 635 |
int v= src[x + stride*y];
|
| 636 |
int b= v&0xFF; |
| 637 |
int g= (v>>8)&0xFF; |
| 638 |
int r= (v>>16)&0xFF; |
| 639 |
|
| 640 |
b -= g; |
| 641 |
r -= g; |
| 642 |
g += (b + r)>>2;
|
| 643 |
b += 0x100;
|
| 644 |
r += 0x100;
|
| 645 |
|
| 646 |
// assert(g>=0 && b>=0 && r>=0);
|
| 647 |
// assert(g<256 && b<512 && r<512);
|
| 648 |
sample[0][0][x]= g; |
| 649 |
sample[1][0][x]= b; |
| 650 |
sample[2][0][x]= r; |
| 651 |
} |
| 652 |
for(p=0; p<3; p++){ |
| 653 |
sample[p][0][-1]= sample[p][1][0 ]; |
| 654 |
sample[p][1][ w]= sample[p][1][w-1]; |
| 655 |
encode_line(s, w, sample[p], FFMIN(p, 1), 9); |
| 656 |
} |
| 657 |
} |
| 658 |
} |
| 659 |
|
| 660 |
static void write_quant_table(RangeCoder *c, int16_t *quant_table){ |
| 661 |
int last=0; |
| 662 |
int i;
|
| 663 |
uint8_t state[CONTEXT_SIZE]; |
| 664 |
memset(state, 128, sizeof(state)); |
| 665 |
|
| 666 |
for(i=1; i<128 ; i++){ |
| 667 |
if(quant_table[i] != quant_table[i-1]){ |
| 668 |
put_symbol(c, state, i-last-1, 0); |
| 669 |
last= i; |
| 670 |
} |
| 671 |
} |
| 672 |
put_symbol(c, state, i-last-1, 0); |
| 673 |
} |
| 674 |
|
| 675 |
static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){ |
| 676 |
int i;
|
| 677 |
for(i=0; i<5; i++) |
| 678 |
write_quant_table(c, quant_table[i]); |
| 679 |
} |
| 680 |
|
| 681 |
static void write_header(FFV1Context *f){ |
| 682 |
uint8_t state[CONTEXT_SIZE]; |
| 683 |
int i, j;
|
| 684 |
RangeCoder * const c= &f->slice_context[0]->c; |
| 685 |
|
| 686 |
memset(state, 128, sizeof(state)); |
| 687 |
|
| 688 |
if(f->version < 2){ |
| 689 |
put_symbol(c, state, f->version, 0);
|
| 690 |
put_symbol(c, state, f->ac, 0);
|
| 691 |
if(f->ac>1){ |
| 692 |
for(i=1; i<256; i++){ |
| 693 |
put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
|
| 694 |
} |
| 695 |
} |
| 696 |
put_symbol(c, state, f->colorspace, 0); //YUV cs type |
| 697 |
if(f->version>0) |
| 698 |
put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
|
| 699 |
put_rac(c, state, 1); //chroma planes |
| 700 |
put_symbol(c, state, f->chroma_h_shift, 0);
|
| 701 |
put_symbol(c, state, f->chroma_v_shift, 0);
|
| 702 |
put_rac(c, state, 0); //no transparency plane |
| 703 |
|
| 704 |
write_quant_tables(c, f->quant_table); |
| 705 |
}else{
|
| 706 |
put_symbol(c, state, f->slice_count, 0);
|
| 707 |
for(i=0; i<f->slice_count; i++){ |
| 708 |
FFV1Context *fs= f->slice_context[i]; |
| 709 |
put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0); |
| 710 |
put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0); |
| 711 |
put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0); |
| 712 |
put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0); |
| 713 |
for(j=0; j<f->plane_count; j++){ |
| 714 |
put_symbol(c, state, f->plane[j].quant_table_index, 0);
|
| 715 |
av_assert0(f->plane[j].quant_table_index == f->avctx->context_model); |
| 716 |
} |
| 717 |
} |
| 718 |
} |
| 719 |
} |
| 720 |
#endif /* CONFIG_FFV1_ENCODER */ |
| 721 |
|
| 722 |
static av_cold int common_init(AVCodecContext *avctx){ |
| 723 |
FFV1Context *s = avctx->priv_data; |
| 724 |
|
| 725 |
s->avctx= avctx; |
| 726 |
s->flags= avctx->flags; |
| 727 |
|
| 728 |
dsputil_init(&s->dsp, avctx); |
| 729 |
|
| 730 |
s->width = avctx->width; |
| 731 |
s->height= avctx->height; |
| 732 |
|
| 733 |
assert(s->width && s->height); |
| 734 |
//defaults
|
| 735 |
s->num_h_slices=1;
|
| 736 |
s->num_v_slices=1;
|
| 737 |
|
| 738 |
|
| 739 |
return 0; |
| 740 |
} |
| 741 |
|
| 742 |
static int init_slice_state(FFV1Context *f){ |
| 743 |
int i, j;
|
| 744 |
|
| 745 |
for(i=0; i<f->slice_count; i++){ |
| 746 |
FFV1Context *fs= f->slice_context[i]; |
| 747 |
for(j=0; j<f->plane_count; j++){ |
| 748 |
PlaneContext * const p= &fs->plane[j];
|
| 749 |
|
| 750 |
if(fs->ac){
|
| 751 |
if(!p-> state) p-> state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t)); |
| 752 |
if(!p-> state)
|
| 753 |
return AVERROR(ENOMEM);
|
| 754 |
}else{
|
| 755 |
if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState)); |
| 756 |
if(!p->vlc_state)
|
| 757 |
return AVERROR(ENOMEM);
|
| 758 |
} |
| 759 |
} |
| 760 |
|
| 761 |
if (fs->ac>1){ |
| 762 |
//FIXME only redo if state_transition changed
|
| 763 |
for(j=1; j<256; j++){ |
| 764 |
fs->c.one_state [ j]= fs->state_transition[j]; |
| 765 |
fs->c.zero_state[256-j]= 256-fs->c.one_state [j]; |
| 766 |
} |
| 767 |
} |
| 768 |
} |
| 769 |
|
| 770 |
return 0; |
| 771 |
} |
| 772 |
|
| 773 |
static av_cold int init_slice_contexts(FFV1Context *f){ |
| 774 |
int i;
|
| 775 |
|
| 776 |
f->slice_count= f->num_h_slices * f->num_v_slices; |
| 777 |
|
| 778 |
for(i=0; i<f->slice_count; i++){ |
| 779 |
FFV1Context *fs= av_mallocz(sizeof(*fs));
|
| 780 |
int sx= i % f->num_h_slices;
|
| 781 |
int sy= i / f->num_h_slices;
|
| 782 |
int sxs= f->avctx->width * sx / f->num_h_slices;
|
| 783 |
int sxe= f->avctx->width *(sx+1) / f->num_h_slices; |
| 784 |
int sys= f->avctx->height* sy / f->num_v_slices;
|
| 785 |
int sye= f->avctx->height*(sy+1) / f->num_v_slices; |
| 786 |
f->slice_context[i]= fs; |
| 787 |
memcpy(fs, f, sizeof(*fs));
|
| 788 |
memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2)); |
| 789 |
|
| 790 |
fs->slice_width = sxe - sxs; |
| 791 |
fs->slice_height= sye - sys; |
| 792 |
fs->slice_x = sxs; |
| 793 |
fs->slice_y = sys; |
| 794 |
|
| 795 |
fs->sample_buffer = av_malloc(9 * (fs->width+6) * sizeof(*fs->sample_buffer)); |
| 796 |
if (!fs->sample_buffer)
|
| 797 |
return AVERROR(ENOMEM);
|
| 798 |
} |
| 799 |
return 0; |
| 800 |
} |
| 801 |
|
| 802 |
static int allocate_initial_states(FFV1Context *f){ |
| 803 |
int i;
|
| 804 |
|
| 805 |
for(i=0; i<f->quant_table_count; i++){ |
| 806 |
f->initial_states[i]= av_malloc(f->context_count[i]*sizeof(*f->initial_states[i]));
|
| 807 |
if(!f->initial_states[i])
|
| 808 |
return AVERROR(ENOMEM);
|
| 809 |
memset(f->initial_states[i], 128, f->context_count[i]*sizeof(*f->initial_states[i])); |
| 810 |
} |
| 811 |
return 0; |
| 812 |
} |
| 813 |
|
| 814 |
#if CONFIG_FFV1_ENCODER
|
| 815 |
static int write_extra_header(FFV1Context *f){ |
| 816 |
RangeCoder * const c= &f->c;
|
| 817 |
uint8_t state[CONTEXT_SIZE]; |
| 818 |
int i, j, k;
|
| 819 |
uint8_t state2[32][CONTEXT_SIZE];
|
| 820 |
|
| 821 |
memset(state2, 128, sizeof(state2)); |
| 822 |
memset(state, 128, sizeof(state)); |
| 823 |
|
| 824 |
f->avctx->extradata= av_malloc(f->avctx->extradata_size= 10000 + (11*11*5*5*5+11*11*11)*32); |
| 825 |
ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size); |
| 826 |
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| 827 |
|
| 828 |
put_symbol(c, state, f->version, 0);
|
| 829 |
put_symbol(c, state, f->ac, 0);
|
| 830 |
if(f->ac>1){ |
| 831 |
for(i=1; i<256; i++){ |
| 832 |
put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
|
| 833 |
} |
| 834 |
} |
| 835 |
put_symbol(c, state, f->colorspace, 0); //YUV cs type |
| 836 |
put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
|
| 837 |
put_rac(c, state, 1); //chroma planes |
| 838 |
put_symbol(c, state, f->chroma_h_shift, 0);
|
| 839 |
put_symbol(c, state, f->chroma_v_shift, 0);
|
| 840 |
put_rac(c, state, 0); //no transparency plane |
| 841 |
put_symbol(c, state, f->num_h_slices-1, 0); |
| 842 |
put_symbol(c, state, f->num_v_slices-1, 0); |
| 843 |
|
| 844 |
put_symbol(c, state, f->quant_table_count, 0);
|
| 845 |
for(i=0; i<f->quant_table_count; i++) |
| 846 |
write_quant_tables(c, f->quant_tables[i]); |
| 847 |
|
| 848 |
for(i=0; i<f->quant_table_count; i++){ |
| 849 |
for(j=0; j<f->context_count[i]*CONTEXT_SIZE; j++) |
| 850 |
if(f->initial_states[i] && f->initial_states[i][0][j] != 128) |
| 851 |
break;
|
| 852 |
if(j<f->context_count[i]*CONTEXT_SIZE){
|
| 853 |
put_rac(c, state, 1);
|
| 854 |
for(j=0; j<f->context_count[i]; j++){ |
| 855 |
for(k=0; k<CONTEXT_SIZE; k++){ |
| 856 |
int pred= j ? f->initial_states[i][j-1][k] : 128; |
| 857 |
put_symbol(c, state2[k], (int8_t)(f->initial_states[i][j][k]-pred), 1);
|
| 858 |
} |
| 859 |
} |
| 860 |
}else{
|
| 861 |
put_rac(c, state, 0);
|
| 862 |
} |
| 863 |
} |
| 864 |
|
| 865 |
f->avctx->extradata_size= ff_rac_terminate(c); |
| 866 |
|
| 867 |
return 0; |
| 868 |
} |
| 869 |
|
| 870 |
static int sort_stt(FFV1Context *s, uint8_t stt[256]){ |
| 871 |
int i,i2,changed,print=0; |
| 872 |
|
| 873 |
do{
|
| 874 |
changed=0;
|
| 875 |
for(i=12; i<244; i++){ |
| 876 |
for(i2=i+1; i2<245 && i2<i+4; i2++){ |
| 877 |
#define COST(old, new) \
|
| 878 |
s->rc_stat[old][0]*-log2((256-(new))/256.0)\ |
| 879 |
+s->rc_stat[old][1]*-log2( (new) /256.0) |
| 880 |
|
| 881 |
#define COST2(old, new) \
|
| 882 |
COST(old, new)\ |
| 883 |
+COST(256-(old), 256-(new)) |
| 884 |
|
| 885 |
double size0= COST2(i, i ) + COST2(i2, i2);
|
| 886 |
double sizeX= COST2(i, i2) + COST2(i2, i );
|
| 887 |
if(sizeX < size0 && i!=128 && i2!=128){ |
| 888 |
int j;
|
| 889 |
FFSWAP(int, stt[ i], stt[ i2]);
|
| 890 |
FFSWAP(int, s->rc_stat[i ][0],s->rc_stat[ i2][0]); |
| 891 |
FFSWAP(int, s->rc_stat[i ][1],s->rc_stat[ i2][1]); |
| 892 |
if(i != 256-i2){ |
| 893 |
FFSWAP(int, stt[256-i], stt[256-i2]); |
| 894 |
FFSWAP(int, s->rc_stat[256-i][0],s->rc_stat[256-i2][0]); |
| 895 |
FFSWAP(int, s->rc_stat[256-i][1],s->rc_stat[256-i2][1]); |
| 896 |
} |
| 897 |
for(j=1; j<256; j++){ |
| 898 |
if (stt[j] == i ) stt[j] = i2;
|
| 899 |
else if(stt[j] == i2) stt[j] = i ; |
| 900 |
if(i != 256-i2){ |
| 901 |
if (stt[256-j] == 256-i ) stt[256-j] = 256-i2; |
| 902 |
else if(stt[256-j] == 256-i2) stt[256-j] = 256-i ; |
| 903 |
} |
| 904 |
} |
| 905 |
print=changed=1;
|
| 906 |
} |
| 907 |
} |
| 908 |
} |
| 909 |
}while(changed);
|
| 910 |
return print;
|
| 911 |
} |
| 912 |
|
| 913 |
static av_cold int encode_init(AVCodecContext *avctx) |
| 914 |
{
|
| 915 |
FFV1Context *s = avctx->priv_data; |
| 916 |
int i, j, k, m;
|
| 917 |
|
| 918 |
common_init(avctx); |
| 919 |
|
| 920 |
s->version=0;
|
| 921 |
s->ac= avctx->coder_type ? 2:0; |
| 922 |
|
| 923 |
if(s->ac>1) |
| 924 |
for(i=1; i<256; i++) |
| 925 |
s->state_transition[i]=ver2_state[i]; |
| 926 |
|
| 927 |
s->plane_count=2;
|
| 928 |
for(i=0; i<256; i++){ |
| 929 |
s->quant_table_count=2;
|
| 930 |
if(avctx->bits_per_raw_sample <=8){ |
| 931 |
s->quant_tables[0][0][i]= quant11[i]; |
| 932 |
s->quant_tables[0][1][i]= 11*quant11[i]; |
| 933 |
s->quant_tables[0][2][i]= 11*11*quant11[i]; |
| 934 |
s->quant_tables[1][0][i]= quant11[i]; |
| 935 |
s->quant_tables[1][1][i]= 11*quant11[i]; |
| 936 |
s->quant_tables[1][2][i]= 11*11*quant5 [i]; |
| 937 |
s->quant_tables[1][3][i]= 5*11*11*quant5 [i]; |
| 938 |
s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i]; |
| 939 |
}else{
|
| 940 |
s->quant_tables[0][0][i]= quant9_10bit[i]; |
| 941 |
s->quant_tables[0][1][i]= 11*quant9_10bit[i]; |
| 942 |
s->quant_tables[0][2][i]= 11*11*quant9_10bit[i]; |
| 943 |
s->quant_tables[1][0][i]= quant9_10bit[i]; |
| 944 |
s->quant_tables[1][1][i]= 11*quant9_10bit[i]; |
| 945 |
s->quant_tables[1][2][i]= 11*11*quant5_10bit[i]; |
| 946 |
s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i]; |
| 947 |
s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i]; |
| 948 |
} |
| 949 |
} |
| 950 |
s->context_count[0]= (11*11*11+1)/2; |
| 951 |
s->context_count[1]= (11*11*5*5*5+1)/2; |
| 952 |
memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table));
|
| 953 |
|
| 954 |
for(i=0; i<s->plane_count; i++){ |
| 955 |
PlaneContext * const p= &s->plane[i];
|
| 956 |
|
| 957 |
memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
|
| 958 |
p->quant_table_index= avctx->context_model; |
| 959 |
p->context_count= s->context_count[p->quant_table_index]; |
| 960 |
} |
| 961 |
|
| 962 |
if(allocate_initial_states(s) < 0) |
| 963 |
return AVERROR(ENOMEM);
|
| 964 |
|
| 965 |
avctx->coded_frame= &s->picture; |
| 966 |
switch(avctx->pix_fmt){
|
| 967 |
case PIX_FMT_YUV444P16:
|
| 968 |
case PIX_FMT_YUV422P16:
|
| 969 |
case PIX_FMT_YUV420P16:
|
| 970 |
if(avctx->bits_per_raw_sample <=8){ |
| 971 |
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
|
| 972 |
return -1; |
| 973 |
} |
| 974 |
if(!s->ac){
|
| 975 |
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
|
| 976 |
return -1; |
| 977 |
} |
| 978 |
s->version= FFMAX(s->version, 1);
|
| 979 |
case PIX_FMT_YUV444P:
|
| 980 |
case PIX_FMT_YUV422P:
|
| 981 |
case PIX_FMT_YUV420P:
|
| 982 |
case PIX_FMT_YUV411P:
|
| 983 |
case PIX_FMT_YUV410P:
|
| 984 |
s->colorspace= 0;
|
| 985 |
break;
|
| 986 |
case PIX_FMT_RGB32:
|
| 987 |
s->colorspace= 1;
|
| 988 |
break;
|
| 989 |
default:
|
| 990 |
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
|
| 991 |
return -1; |
| 992 |
} |
| 993 |
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); |
| 994 |
|
| 995 |
s->picture_number=0;
|
| 996 |
|
| 997 |
if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){
|
| 998 |
for(i=0; i<s->quant_table_count; i++){ |
| 999 |
s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i]));
|
| 1000 |
if(!s->rc_stat2[i])
|
| 1001 |
return AVERROR(ENOMEM);
|
| 1002 |
} |
| 1003 |
} |
| 1004 |
if(avctx->stats_in){
|
| 1005 |
char *p= avctx->stats_in;
|
| 1006 |
uint8_t best_state[256][256]; |
| 1007 |
int gob_count=0; |
| 1008 |
char *next;
|
| 1009 |
|
| 1010 |
av_assert0(s->version>=2);
|
| 1011 |
|
| 1012 |
for(;;){
|
| 1013 |
for(j=0; j<256; j++){ |
| 1014 |
for(i=0; i<2; i++){ |
| 1015 |
s->rc_stat[j][i]= strtol(p, &next, 0);
|
| 1016 |
if(next==p){
|
| 1017 |
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d [%s]\n", j,i,p);
|
| 1018 |
return -1; |
| 1019 |
} |
| 1020 |
p=next; |
| 1021 |
} |
| 1022 |
} |
| 1023 |
for(i=0; i<s->quant_table_count; i++){ |
| 1024 |
for(j=0; j<s->context_count[i]; j++){ |
| 1025 |
for(k=0; k<32; k++){ |
| 1026 |
for(m=0; m<2; m++){ |
| 1027 |
s->rc_stat2[i][j][k][m]= strtol(p, &next, 0);
|
| 1028 |
if(next==p){
|
| 1029 |
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p);
|
| 1030 |
return -1; |
| 1031 |
} |
| 1032 |
p=next; |
| 1033 |
} |
| 1034 |
} |
| 1035 |
} |
| 1036 |
} |
| 1037 |
gob_count= strtol(p, &next, 0);
|
| 1038 |
if(next==p || gob_count <0){ |
| 1039 |
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
|
| 1040 |
return -1; |
| 1041 |
} |
| 1042 |
p=next; |
| 1043 |
while(*p=='\n' || *p==' ') p++; |
| 1044 |
if(p[0]==0) break; |
| 1045 |
} |
| 1046 |
sort_stt(s, s->state_transition); |
| 1047 |
|
| 1048 |
find_best_state(best_state, s->state_transition); |
| 1049 |
|
| 1050 |
for(i=0; i<s->quant_table_count; i++){ |
| 1051 |
for(j=0; j<s->context_count[i]; j++){ |
| 1052 |
for(k=0; k<32; k++){ |
| 1053 |
double p= 128; |
| 1054 |
if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){ |
| 1055 |
p=256.0*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]); |
| 1056 |
} |
| 1057 |
s->initial_states[i][j][k]= best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1])/gob_count, 0, 255)]; |
| 1058 |
} |
| 1059 |
} |
| 1060 |
} |
| 1061 |
} |
| 1062 |
|
| 1063 |
if(s->version>1){ |
| 1064 |
s->num_h_slices=2;
|
| 1065 |
s->num_v_slices=2;
|
| 1066 |
write_extra_header(s); |
| 1067 |
} |
| 1068 |
|
| 1069 |
if(init_slice_contexts(s) < 0) |
| 1070 |
return -1; |
| 1071 |
if(init_slice_state(s) < 0) |
| 1072 |
return -1; |
| 1073 |
|
| 1074 |
#define STATS_OUT_SIZE 1024*1024*6 |
| 1075 |
if(avctx->flags & CODEC_FLAG_PASS1){
|
| 1076 |
avctx->stats_out= av_mallocz(STATS_OUT_SIZE); |
| 1077 |
for(i=0; i<s->quant_table_count; i++){ |
| 1078 |
for(j=0; j<s->slice_count; j++){ |
| 1079 |
FFV1Context *sf= s->slice_context[j]; |
| 1080 |
av_assert0(!sf->rc_stat2[i]); |
| 1081 |
sf->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*sf->rc_stat2[i]));
|
| 1082 |
if(!sf->rc_stat2[i])
|
| 1083 |
return AVERROR(ENOMEM);
|
| 1084 |
} |
| 1085 |
} |
| 1086 |
} |
| 1087 |
|
| 1088 |
return 0; |
| 1089 |
} |
| 1090 |
#endif /* CONFIG_FFV1_ENCODER */ |
| 1091 |
|
| 1092 |
|
| 1093 |
static void clear_state(FFV1Context *f){ |
| 1094 |
int i, si, j;
|
| 1095 |
|
| 1096 |
for(si=0; si<f->slice_count; si++){ |
| 1097 |
FFV1Context *fs= f->slice_context[si]; |
| 1098 |
for(i=0; i<f->plane_count; i++){ |
| 1099 |
PlaneContext *p= &fs->plane[i]; |
| 1100 |
|
| 1101 |
p->interlace_bit_state[0]= 128; |
| 1102 |
p->interlace_bit_state[1]= 128; |
| 1103 |
|
| 1104 |
if(fs->ac){
|
| 1105 |
if(f->initial_states[p->quant_table_index]){
|
| 1106 |
memcpy(p->state, f->initial_states[p->quant_table_index], CONTEXT_SIZE*p->context_count); |
| 1107 |
}else
|
| 1108 |
memset(p->state, 128, CONTEXT_SIZE*p->context_count);
|
| 1109 |
}else{
|
| 1110 |
for(j=0; j<p->context_count; j++){ |
| 1111 |
p->vlc_state[j].drift= 0;
|
| 1112 |
p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2); |
| 1113 |
p->vlc_state[j].bias= 0;
|
| 1114 |
p->vlc_state[j].count= 1;
|
| 1115 |
} |
| 1116 |
} |
| 1117 |
} |
| 1118 |
} |
| 1119 |
} |
| 1120 |
|
| 1121 |
#if CONFIG_FFV1_ENCODER
|
| 1122 |
static int encode_slice(AVCodecContext *c, void *arg){ |
| 1123 |
FFV1Context *fs= *(void**)arg;
|
| 1124 |
FFV1Context *f= fs->avctx->priv_data; |
| 1125 |
int width = fs->slice_width;
|
| 1126 |
int height= fs->slice_height;
|
| 1127 |
int x= fs->slice_x;
|
| 1128 |
int y= fs->slice_y;
|
| 1129 |
AVFrame * const p= &f->picture;
|
| 1130 |
|
| 1131 |
if(f->colorspace==0){ |
| 1132 |
const int chroma_width = -((-width )>>f->chroma_h_shift); |
| 1133 |
const int chroma_height= -((-height)>>f->chroma_v_shift); |
| 1134 |
const int cx= x>>f->chroma_h_shift; |
| 1135 |
const int cy= y>>f->chroma_v_shift; |
| 1136 |
|
| 1137 |
encode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0); |
| 1138 |
|
| 1139 |
encode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); |
| 1140 |
encode_plane(fs, p->data[2] + cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1); |
| 1141 |
}else{
|
| 1142 |
encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4); |
| 1143 |
} |
| 1144 |
emms_c(); |
| 1145 |
|
| 1146 |
return 0; |
| 1147 |
} |
| 1148 |
|
| 1149 |
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ |
| 1150 |
FFV1Context *f = avctx->priv_data; |
| 1151 |
RangeCoder * const c= &f->slice_context[0]->c; |
| 1152 |
AVFrame *pict = data; |
| 1153 |
AVFrame * const p= &f->picture;
|
| 1154 |
int used_count= 0; |
| 1155 |
uint8_t keystate=128;
|
| 1156 |
uint8_t *buf_p; |
| 1157 |
int i;
|
| 1158 |
|
| 1159 |
ff_init_range_encoder(c, buf, buf_size); |
| 1160 |
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| 1161 |
|
| 1162 |
*p = *pict; |
| 1163 |
p->pict_type= FF_I_TYPE; |
| 1164 |
|
| 1165 |
if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){ |
| 1166 |
put_rac(c, &keystate, 1);
|
| 1167 |
p->key_frame= 1;
|
| 1168 |
f->gob_count++; |
| 1169 |
write_header(f); |
| 1170 |
clear_state(f); |
| 1171 |
}else{
|
| 1172 |
put_rac(c, &keystate, 0);
|
| 1173 |
p->key_frame= 0;
|
| 1174 |
} |
| 1175 |
|
| 1176 |
if(!f->ac){
|
| 1177 |
used_count += ff_rac_terminate(c); |
| 1178 |
//printf("pos=%d\n", used_count);
|
| 1179 |
init_put_bits(&f->slice_context[0]->pb, buf + used_count, buf_size - used_count);
|
| 1180 |
}else if (f->ac>1){ |
| 1181 |
int i;
|
| 1182 |
for(i=1; i<256; i++){ |
| 1183 |
c->one_state[i]= f->state_transition[i]; |
| 1184 |
c->zero_state[256-i]= 256-c->one_state[i]; |
| 1185 |
} |
| 1186 |
} |
| 1187 |
|
| 1188 |
for(i=1; i<f->slice_count; i++){ |
| 1189 |
FFV1Context *fs= f->slice_context[i]; |
| 1190 |
uint8_t *start= buf + (buf_size-used_count)*i/f->slice_count; |
| 1191 |
int len= buf_size/f->slice_count;
|
| 1192 |
|
| 1193 |
if(fs->ac){
|
| 1194 |
ff_init_range_encoder(&fs->c, start, len); |
| 1195 |
}else{
|
| 1196 |
init_put_bits(&fs->pb, start, len); |
| 1197 |
} |
| 1198 |
} |
| 1199 |
avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*)); |
| 1200 |
|
| 1201 |
buf_p=buf; |
| 1202 |
for(i=0; i<f->slice_count; i++){ |
| 1203 |
FFV1Context *fs= f->slice_context[i]; |
| 1204 |
int bytes;
|
| 1205 |
|
| 1206 |
if(fs->ac){
|
| 1207 |
uint8_t state=128;
|
| 1208 |
put_rac(&fs->c, &state, 0);
|
| 1209 |
bytes= ff_rac_terminate(&fs->c); |
| 1210 |
}else{
|
| 1211 |
flush_put_bits(&fs->pb); //nicer padding FIXME
|
| 1212 |
bytes= used_count + (put_bits_count(&fs->pb)+7)/8; |
| 1213 |
used_count= 0;
|
| 1214 |
} |
| 1215 |
if(i>0){ |
| 1216 |
av_assert0(bytes < buf_size/f->slice_count); |
| 1217 |
memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes); |
| 1218 |
av_assert0(bytes < (1<<24)); |
| 1219 |
AV_WB24(buf_p+bytes, bytes); |
| 1220 |
bytes+=3;
|
| 1221 |
} |
| 1222 |
buf_p += bytes; |
| 1223 |
} |
| 1224 |
|
| 1225 |
if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){ |
| 1226 |
int j, k, m;
|
| 1227 |
char *p= avctx->stats_out;
|
| 1228 |
char *end= p + STATS_OUT_SIZE;
|
| 1229 |
|
| 1230 |
memset(f->rc_stat, 0, sizeof(f->rc_stat)); |
| 1231 |
for(i=0; i<f->quant_table_count; i++) |
| 1232 |
memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i])); |
| 1233 |
|
| 1234 |
for(j=0; j<f->slice_count; j++){ |
| 1235 |
FFV1Context *fs= f->slice_context[j]; |
| 1236 |
for(i=0; i<256; i++){ |
| 1237 |
f->rc_stat[i][0] += fs->rc_stat[i][0]; |
| 1238 |
f->rc_stat[i][1] += fs->rc_stat[i][1]; |
| 1239 |
} |
| 1240 |
for(i=0; i<f->quant_table_count; i++){ |
| 1241 |
for(k=0; k<f->context_count[i]; k++){ |
| 1242 |
for(m=0; m<32; m++){ |
| 1243 |
f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0]; |
| 1244 |
f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1]; |
| 1245 |
} |
| 1246 |
} |
| 1247 |
} |
| 1248 |
} |
| 1249 |
|
| 1250 |
for(j=0; j<256; j++){ |
| 1251 |
snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat[j][0], f->rc_stat[j][1]); |
| 1252 |
p+= strlen(p); |
| 1253 |
} |
| 1254 |
snprintf(p, end-p, "\n");
|
| 1255 |
|
| 1256 |
for(i=0; i<f->quant_table_count; i++){ |
| 1257 |
for(j=0; j<f->context_count[i]; j++){ |
| 1258 |
for(m=0; m<32; m++){ |
| 1259 |
snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]); |
| 1260 |
p+= strlen(p); |
| 1261 |
} |
| 1262 |
} |
| 1263 |
} |
| 1264 |
snprintf(p, end-p, "%d\n", f->gob_count);
|
| 1265 |
} else if(avctx->flags&CODEC_FLAG_PASS1) |
| 1266 |
avctx->stats_out[0] = '\0'; |
| 1267 |
|
| 1268 |
f->picture_number++; |
| 1269 |
return buf_p-buf;
|
| 1270 |
} |
| 1271 |
#endif /* CONFIG_FFV1_ENCODER */ |
| 1272 |
|
| 1273 |
static av_cold int common_end(AVCodecContext *avctx){ |
| 1274 |
FFV1Context *s = avctx->priv_data; |
| 1275 |
int i, j;
|
| 1276 |
|
| 1277 |
if (avctx->codec->decode && s->picture.data[0]) |
| 1278 |
avctx->release_buffer(avctx, &s->picture); |
| 1279 |
|
| 1280 |
for(j=0; j<s->slice_count; j++){ |
| 1281 |
FFV1Context *fs= s->slice_context[j]; |
| 1282 |
for(i=0; i<s->plane_count; i++){ |
| 1283 |
PlaneContext *p= &fs->plane[i]; |
| 1284 |
|
| 1285 |
av_freep(&p->state); |
| 1286 |
av_freep(&p->vlc_state); |
| 1287 |
} |
| 1288 |
av_freep(&fs->sample_buffer); |
| 1289 |
} |
| 1290 |
|
| 1291 |
av_freep(&avctx->stats_out); |
| 1292 |
for(j=0; j<s->quant_table_count; j++){ |
| 1293 |
av_freep(&s->initial_states[j]); |
| 1294 |
for(i=0; i<s->slice_count; i++){ |
| 1295 |
FFV1Context *sf= s->slice_context[i]; |
| 1296 |
av_freep(&sf->rc_stat2[j]); |
| 1297 |
} |
| 1298 |
av_freep(&s->rc_stat2[j]); |
| 1299 |
} |
| 1300 |
|
| 1301 |
for(i=0; i<s->slice_count; i++){ |
| 1302 |
av_freep(&s->slice_context[i]); |
| 1303 |
} |
| 1304 |
|
| 1305 |
return 0; |
| 1306 |
} |
| 1307 |
|
| 1308 |
static av_always_inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){ |
| 1309 |
PlaneContext * const p= &s->plane[plane_index];
|
| 1310 |
RangeCoder * const c= &s->c;
|
| 1311 |
int x;
|
| 1312 |
int run_count=0; |
| 1313 |
int run_mode=0; |
| 1314 |
int run_index= s->run_index;
|
| 1315 |
|
| 1316 |
for(x=0; x<w; x++){ |
| 1317 |
int diff, context, sign;
|
| 1318 |
|
| 1319 |
context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x); |
| 1320 |
if(context < 0){ |
| 1321 |
context= -context; |
| 1322 |
sign=1;
|
| 1323 |
}else
|
| 1324 |
sign=0;
|
| 1325 |
|
| 1326 |
av_assert2(context < p->context_count); |
| 1327 |
|
| 1328 |
if(s->ac){
|
| 1329 |
diff= get_symbol_inline(c, p->state[context], 1);
|
| 1330 |
}else{
|
| 1331 |
if(context == 0 && run_mode==0) run_mode=1; |
| 1332 |
|
| 1333 |
if(run_mode){
|
| 1334 |
if(run_count==0 && run_mode==1){ |
| 1335 |
if(get_bits1(&s->gb)){
|
| 1336 |
run_count = 1<<ff_log2_run[run_index];
|
| 1337 |
if(x + run_count <= w) run_index++;
|
| 1338 |
}else{
|
| 1339 |
if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);
|
| 1340 |
else run_count=0; |
| 1341 |
if(run_index) run_index--;
|
| 1342 |
run_mode=2;
|
| 1343 |
} |
| 1344 |
} |
| 1345 |
run_count--; |
| 1346 |
if(run_count < 0){ |
| 1347 |
run_mode=0;
|
| 1348 |
run_count=0;
|
| 1349 |
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); |
| 1350 |
if(diff>=0) diff++; |
| 1351 |
}else
|
| 1352 |
diff=0;
|
| 1353 |
}else
|
| 1354 |
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); |
| 1355 |
|
| 1356 |
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));
|
| 1357 |
} |
| 1358 |
|
| 1359 |
if(sign) diff= -diff;
|
| 1360 |
|
| 1361 |
sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1); |
| 1362 |
} |
| 1363 |
s->run_index= run_index; |
| 1364 |
} |
| 1365 |
|
| 1366 |
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ |
| 1367 |
int x, y;
|
| 1368 |
int_fast16_t *sample[2];
|
| 1369 |
sample[0]=s->sample_buffer +3; |
| 1370 |
sample[1]=s->sample_buffer+w+6+3; |
| 1371 |
|
| 1372 |
s->run_index=0;
|
| 1373 |
|
| 1374 |
memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer)); |
| 1375 |
|
| 1376 |
for(y=0; y<h; y++){ |
| 1377 |
int_fast16_t *temp= sample[0]; //FIXME try a normal buffer |
| 1378 |
|
| 1379 |
sample[0]= sample[1]; |
| 1380 |
sample[1]= temp;
|
| 1381 |
|
| 1382 |
sample[1][-1]= sample[0][0 ]; |
| 1383 |
sample[0][ w]= sample[0][w-1]; |
| 1384 |
|
| 1385 |
//{START_TIMER
|
| 1386 |
if(s->avctx->bits_per_raw_sample <= 8){ |
| 1387 |
decode_line(s, w, sample, plane_index, 8);
|
| 1388 |
for(x=0; x<w; x++){ |
| 1389 |
src[x + stride*y]= sample[1][x];
|
| 1390 |
} |
| 1391 |
}else{
|
| 1392 |
decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| 1393 |
for(x=0; x<w; x++){ |
| 1394 |
((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample); |
| 1395 |
} |
| 1396 |
} |
| 1397 |
//STOP_TIMER("decode-line")}
|
| 1398 |
} |
| 1399 |
} |
| 1400 |
|
| 1401 |
static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ |
| 1402 |
int x, y, p;
|
| 1403 |
int_fast16_t *sample[3][2]; |
| 1404 |
for(x=0; x<3; x++){ |
| 1405 |
sample[x][0] = s->sample_buffer + x*2 *(w+6) + 3; |
| 1406 |
sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3; |
| 1407 |
} |
| 1408 |
|
| 1409 |
s->run_index=0;
|
| 1410 |
|
| 1411 |
memset(s->sample_buffer, 0, 6*(w+6)*sizeof(*s->sample_buffer)); |
| 1412 |
|
| 1413 |
for(y=0; y<h; y++){ |
| 1414 |
for(p=0; p<3; p++){ |
| 1415 |
int_fast16_t *temp= sample[p][0]; //FIXME try a normal buffer |
| 1416 |
|
| 1417 |
sample[p][0]= sample[p][1]; |
| 1418 |
sample[p][1]= temp;
|
| 1419 |
|
| 1420 |
sample[p][1][-1]= sample[p][0][0 ]; |
| 1421 |
sample[p][0][ w]= sample[p][0][w-1]; |
| 1422 |
decode_line(s, w, sample[p], FFMIN(p, 1), 9); |
| 1423 |
} |
| 1424 |
for(x=0; x<w; x++){ |
| 1425 |
int g= sample[0][1][x]; |
| 1426 |
int b= sample[1][1][x]; |
| 1427 |
int r= sample[2][1][x]; |
| 1428 |
|
| 1429 |
// assert(g>=0 && b>=0 && r>=0);
|
| 1430 |
// assert(g<256 && b<512 && r<512);
|
| 1431 |
|
| 1432 |
b -= 0x100;
|
| 1433 |
r -= 0x100;
|
| 1434 |
g -= (b + r)>>2;
|
| 1435 |
b += g; |
| 1436 |
r += g; |
| 1437 |
|
| 1438 |
src[x + stride*y]= b + (g<<8) + (r<<16) + (0xFF<<24); |
| 1439 |
} |
| 1440 |
} |
| 1441 |
} |
| 1442 |
|
| 1443 |
static int decode_slice(AVCodecContext *c, void *arg){ |
| 1444 |
FFV1Context *fs= *(void**)arg;
|
| 1445 |
FFV1Context *f= fs->avctx->priv_data; |
| 1446 |
int width = fs->slice_width;
|
| 1447 |
int height= fs->slice_height;
|
| 1448 |
int x= fs->slice_x;
|
| 1449 |
int y= fs->slice_y;
|
| 1450 |
AVFrame * const p= &f->picture;
|
| 1451 |
|
| 1452 |
av_assert1(width && height); |
| 1453 |
if(f->colorspace==0){ |
| 1454 |
const int chroma_width = -((-width )>>f->chroma_h_shift); |
| 1455 |
const int chroma_height= -((-height)>>f->chroma_v_shift); |
| 1456 |
const int cx= x>>f->chroma_h_shift; |
| 1457 |
const int cy= y>>f->chroma_v_shift; |
| 1458 |
decode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0); |
| 1459 |
|
| 1460 |
decode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); |
| 1461 |
decode_plane(fs, p->data[2] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[2], 1); |
| 1462 |
}else{
|
| 1463 |
decode_rgb_frame(fs, (uint32_t*)p->data[0] + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4); |
| 1464 |
} |
| 1465 |
|
| 1466 |
emms_c(); |
| 1467 |
|
| 1468 |
return 0; |
| 1469 |
} |
| 1470 |
|
| 1471 |
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){ |
| 1472 |
int v;
|
| 1473 |
int i=0; |
| 1474 |
uint8_t state[CONTEXT_SIZE]; |
| 1475 |
|
| 1476 |
memset(state, 128, sizeof(state)); |
| 1477 |
|
| 1478 |
for(v=0; i<128 ; v++){ |
| 1479 |
int len= get_symbol(c, state, 0) + 1; |
| 1480 |
|
| 1481 |
if(len + i > 128) return -1; |
| 1482 |
|
| 1483 |
while(len--){
|
| 1484 |
quant_table[i] = scale*v; |
| 1485 |
i++; |
| 1486 |
//printf("%2d ",v);
|
| 1487 |
//if(i%16==0) printf("\n");
|
| 1488 |
} |
| 1489 |
} |
| 1490 |
|
| 1491 |
for(i=1; i<128; i++){ |
| 1492 |
quant_table[256-i]= -quant_table[i];
|
| 1493 |
} |
| 1494 |
quant_table[128]= -quant_table[127]; |
| 1495 |
|
| 1496 |
return 2*v - 1; |
| 1497 |
} |
| 1498 |
|
| 1499 |
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){ |
| 1500 |
int i;
|
| 1501 |
int context_count=1; |
| 1502 |
|
| 1503 |
for(i=0; i<5; i++){ |
| 1504 |
context_count*= read_quant_table(c, quant_table[i], context_count); |
| 1505 |
if(context_count > 32768U){ |
| 1506 |
return -1; |
| 1507 |
} |
| 1508 |
} |
| 1509 |
return (context_count+1)/2; |
| 1510 |
} |
| 1511 |
|
| 1512 |
static int read_extra_header(FFV1Context *f){ |
| 1513 |
RangeCoder * const c= &f->c;
|
| 1514 |
uint8_t state[CONTEXT_SIZE]; |
| 1515 |
int i, j, k;
|
| 1516 |
uint8_t state2[32][CONTEXT_SIZE];
|
| 1517 |
|
| 1518 |
memset(state2, 128, sizeof(state2)); |
| 1519 |
memset(state, 128, sizeof(state)); |
| 1520 |
|
| 1521 |
ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size); |
| 1522 |
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| 1523 |
|
| 1524 |
f->version= get_symbol(c, state, 0);
|
| 1525 |
f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
|
| 1526 |
if(f->ac>1){ |
| 1527 |
for(i=1; i<256; i++){ |
| 1528 |
f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
|
| 1529 |
} |
| 1530 |
} |
| 1531 |
f->colorspace= get_symbol(c, state, 0); //YUV cs type |
| 1532 |
f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
|
| 1533 |
get_rac(c, state); //no chroma = false
|
| 1534 |
f->chroma_h_shift= get_symbol(c, state, 0);
|
| 1535 |
f->chroma_v_shift= get_symbol(c, state, 0);
|
| 1536 |
get_rac(c, state); //transparency plane
|
| 1537 |
f->plane_count= 2;
|
| 1538 |
f->num_h_slices= 1 + get_symbol(c, state, 0); |
| 1539 |
f->num_v_slices= 1 + get_symbol(c, state, 0); |
| 1540 |
if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){ |
| 1541 |
av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");
|
| 1542 |
return -1; |
| 1543 |
} |
| 1544 |
|
| 1545 |
f->quant_table_count= get_symbol(c, state, 0);
|
| 1546 |
if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES) |
| 1547 |
return -1; |
| 1548 |
for(i=0; i<f->quant_table_count; i++){ |
| 1549 |
if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){ |
| 1550 |
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
|
| 1551 |
return -1; |
| 1552 |
} |
| 1553 |
} |
| 1554 |
|
| 1555 |
if(allocate_initial_states(f) < 0) |
| 1556 |
return AVERROR(ENOMEM);
|
| 1557 |
|
| 1558 |
for(i=0; i<f->quant_table_count; i++){ |
| 1559 |
if(get_rac(c, state)){
|
| 1560 |
for(j=0; j<f->context_count[i]; j++){ |
| 1561 |
for(k=0; k<CONTEXT_SIZE; k++){ |
| 1562 |
int pred= j ? f->initial_states[i][j-1][k] : 128; |
| 1563 |
f->initial_states[i][j][k]= (pred+get_symbol(c, state2[k], 1))&0xFF; |
| 1564 |
} |
| 1565 |
} |
| 1566 |
} |
| 1567 |
} |
| 1568 |
|
| 1569 |
return 0; |
| 1570 |
} |
| 1571 |
|
| 1572 |
static int read_header(FFV1Context *f){ |
| 1573 |
uint8_t state[CONTEXT_SIZE]; |
| 1574 |
int i, j, context_count;
|
| 1575 |
RangeCoder * const c= &f->slice_context[0]->c; |
| 1576 |
|
| 1577 |
memset(state, 128, sizeof(state)); |
| 1578 |
|
| 1579 |
if(f->version < 2){ |
| 1580 |
f->version= get_symbol(c, state, 0);
|
| 1581 |
f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
|
| 1582 |
if(f->ac>1){ |
| 1583 |
for(i=1; i<256; i++){ |
| 1584 |
f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
|
| 1585 |
} |
| 1586 |
} |
| 1587 |
f->colorspace= get_symbol(c, state, 0); //YUV cs type |
| 1588 |
if(f->version>0) |
| 1589 |
f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
|
| 1590 |
get_rac(c, state); //no chroma = false
|
| 1591 |
f->chroma_h_shift= get_symbol(c, state, 0);
|
| 1592 |
f->chroma_v_shift= get_symbol(c, state, 0);
|
| 1593 |
get_rac(c, state); //transparency plane
|
| 1594 |
f->plane_count= 2;
|
| 1595 |
} |
| 1596 |
|
| 1597 |
if(f->colorspace==0){ |
| 1598 |
if(f->avctx->bits_per_raw_sample<=8){ |
| 1599 |
switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| 1600 |
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break; |
| 1601 |
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break; |
| 1602 |
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break; |
| 1603 |
case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break; |
| 1604 |
case 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break; |
| 1605 |
default:
|
| 1606 |
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
|
| 1607 |
return -1; |
| 1608 |
} |
| 1609 |
}else{
|
| 1610 |
switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| 1611 |
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break; |
| 1612 |
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break; |
| 1613 |
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break; |
| 1614 |
default:
|
| 1615 |
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
|
| 1616 |
return -1; |
| 1617 |
} |
| 1618 |
} |
| 1619 |
}else if(f->colorspace==1){ |
| 1620 |
if(f->chroma_h_shift || f->chroma_v_shift){
|
| 1621 |
av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");
|
| 1622 |
return -1; |
| 1623 |
} |
| 1624 |
f->avctx->pix_fmt= PIX_FMT_RGB32; |
| 1625 |
}else{
|
| 1626 |
av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
|
| 1627 |
return -1; |
| 1628 |
} |
| 1629 |
|
| 1630 |
//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);
|
| 1631 |
if(f->version < 2){ |
| 1632 |
context_count= read_quant_tables(c, f->quant_table); |
| 1633 |
if(context_count < 0){ |
| 1634 |
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
|
| 1635 |
return -1; |
| 1636 |
} |
| 1637 |
}else{
|
| 1638 |
f->slice_count= get_symbol(c, state, 0);
|
| 1639 |
if(f->slice_count > (unsigned)MAX_SLICES) |
| 1640 |
return -1; |
| 1641 |
} |
| 1642 |
|
| 1643 |
for(j=0; j<f->slice_count; j++){ |
| 1644 |
FFV1Context *fs= f->slice_context[j]; |
| 1645 |
fs->ac= f->ac; |
| 1646 |
|
| 1647 |
if(f->version >= 2){ |
| 1648 |
fs->slice_x = get_symbol(c, state, 0) *f->width ;
|
| 1649 |
fs->slice_y = get_symbol(c, state, 0) *f->height;
|
| 1650 |
fs->slice_width =(get_symbol(c, state, 0)+1)*f->width + fs->slice_x; |
| 1651 |
fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y; |
| 1652 |
|
| 1653 |
fs->slice_x /= f->num_h_slices; |
| 1654 |
fs->slice_y /= f->num_v_slices; |
| 1655 |
fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x; |
| 1656 |
fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y; |
| 1657 |
if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height) |
| 1658 |
return -1; |
| 1659 |
if( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width |
| 1660 |
|| (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
|
| 1661 |
return -1; |
| 1662 |
} |
| 1663 |
|
| 1664 |
for(i=0; i<f->plane_count; i++){ |
| 1665 |
PlaneContext * const p= &fs->plane[i];
|
| 1666 |
|
| 1667 |
if(f->version >= 2){ |
| 1668 |
int idx=get_symbol(c, state, 0); |
| 1669 |
if(idx > (unsigned)f->quant_table_count){ |
| 1670 |
av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
|
| 1671 |
return -1; |
| 1672 |
} |
| 1673 |
p->quant_table_index= idx; |
| 1674 |
memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
|
| 1675 |
context_count= f->context_count[idx]; |
| 1676 |
}else{
|
| 1677 |
memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
|
| 1678 |
} |
| 1679 |
|
| 1680 |
if(p->context_count < context_count){
|
| 1681 |
av_freep(&p->state); |
| 1682 |
av_freep(&p->vlc_state); |
| 1683 |
} |
| 1684 |
p->context_count= context_count; |
| 1685 |
} |
| 1686 |
} |
| 1687 |
|
| 1688 |
return 0; |
| 1689 |
} |
| 1690 |
|
| 1691 |
static av_cold int decode_init(AVCodecContext *avctx) |
| 1692 |
{
|
| 1693 |
FFV1Context *f = avctx->priv_data; |
| 1694 |
|
| 1695 |
common_init(avctx); |
| 1696 |
|
| 1697 |
if(avctx->extradata && read_extra_header(f) < 0) |
| 1698 |
return -1; |
| 1699 |
|
| 1700 |
if(init_slice_contexts(f) < 0) |
| 1701 |
return -1; |
| 1702 |
|
| 1703 |
return 0; |
| 1704 |
} |
| 1705 |
|
| 1706 |
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){ |
| 1707 |
const uint8_t *buf = avpkt->data;
|
| 1708 |
int buf_size = avpkt->size;
|
| 1709 |
FFV1Context *f = avctx->priv_data; |
| 1710 |
RangeCoder * const c= &f->slice_context[0]->c; |
| 1711 |
AVFrame * const p= &f->picture;
|
| 1712 |
int bytes_read, i;
|
| 1713 |
uint8_t keystate= 128;
|
| 1714 |
const uint8_t *buf_p;
|
| 1715 |
|
| 1716 |
AVFrame *picture = data; |
| 1717 |
|
| 1718 |
/* release previously stored data */
|
| 1719 |
if (p->data[0]) |
| 1720 |
avctx->release_buffer(avctx, p); |
| 1721 |
|
| 1722 |
ff_init_range_decoder(c, buf, buf_size); |
| 1723 |
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| 1724 |
|
| 1725 |
|
| 1726 |
p->pict_type= FF_I_TYPE; //FIXME I vs. P
|
| 1727 |
if(get_rac(c, &keystate)){
|
| 1728 |
p->key_frame= 1;
|
| 1729 |
if(read_header(f) < 0) |
| 1730 |
return -1; |
| 1731 |
if(init_slice_state(f) < 0) |
| 1732 |
return -1; |
| 1733 |
|
| 1734 |
clear_state(f); |
| 1735 |
}else{
|
| 1736 |
p->key_frame= 0;
|
| 1737 |
} |
| 1738 |
if(f->ac>1){ |
| 1739 |
int i;
|
| 1740 |
for(i=1; i<256; i++){ |
| 1741 |
c->one_state[i]= f->state_transition[i]; |
| 1742 |
c->zero_state[256-i]= 256-c->one_state[i]; |
| 1743 |
} |
| 1744 |
} |
| 1745 |
|
| 1746 |
p->reference= 0;
|
| 1747 |
if(avctx->get_buffer(avctx, p) < 0){ |
| 1748 |
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
| 1749 |
return -1; |
| 1750 |
} |
| 1751 |
|
| 1752 |
if(avctx->debug&FF_DEBUG_PICT_INFO)
|
| 1753 |
av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);
|
| 1754 |
|
| 1755 |
if(!f->ac){
|
| 1756 |
bytes_read = c->bytestream - c->bytestream_start - 1;
|
| 1757 |
if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME |
| 1758 |
//printf("pos=%d\n", bytes_read);
|
| 1759 |
init_get_bits(&f->slice_context[0]->gb, buf + bytes_read, buf_size - bytes_read);
|
| 1760 |
} else {
|
| 1761 |
bytes_read = 0; /* avoid warning */ |
| 1762 |
} |
| 1763 |
|
| 1764 |
buf_p= buf + buf_size; |
| 1765 |
for(i=f->slice_count-1; i>0; i--){ |
| 1766 |
FFV1Context *fs= f->slice_context[i]; |
| 1767 |
int v= AV_RB24(buf_p-3)+3; |
| 1768 |
if(buf_p - buf <= v){
|
| 1769 |
av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
|
| 1770 |
return -1; |
| 1771 |
} |
| 1772 |
buf_p -= v; |
| 1773 |
if(fs->ac){
|
| 1774 |
ff_init_range_decoder(&fs->c, buf_p, v); |
| 1775 |
}else{
|
| 1776 |
init_get_bits(&fs->gb, buf_p, v); |
| 1777 |
} |
| 1778 |
} |
| 1779 |
|
| 1780 |
avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*)); |
| 1781 |
f->picture_number++; |
| 1782 |
|
| 1783 |
*picture= *p; |
| 1784 |
*data_size = sizeof(AVFrame);
|
| 1785 |
|
| 1786 |
return buf_size;
|
| 1787 |
} |
| 1788 |
|
| 1789 |
AVCodec ff_ffv1_decoder = {
|
| 1790 |
"ffv1",
|
| 1791 |
AVMEDIA_TYPE_VIDEO, |
| 1792 |
CODEC_ID_FFV1, |
| 1793 |
sizeof(FFV1Context),
|
| 1794 |
decode_init, |
| 1795 |
NULL,
|
| 1796 |
common_end, |
| 1797 |
decode_frame, |
| 1798 |
CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
|
| 1799 |
NULL,
|
| 1800 |
.long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
|
| 1801 |
}; |
| 1802 |
|
| 1803 |
#if CONFIG_FFV1_ENCODER
|
| 1804 |
AVCodec ff_ffv1_encoder = {
|
| 1805 |
"ffv1",
|
| 1806 |
AVMEDIA_TYPE_VIDEO, |
| 1807 |
CODEC_ID_FFV1, |
| 1808 |
sizeof(FFV1Context),
|
| 1809 |
encode_init, |
| 1810 |
encode_frame, |
| 1811 |
common_end, |
| 1812 |
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_NONE}, |
| 1813 |
.long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
|
| 1814 |
}; |
| 1815 |
#endif
|