mirror of
https://git.videolan.org/git/ffmpeg.git
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306 lines
12 KiB
C
306 lines
12 KiB
C
/*
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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "libavutil/attributes.h"
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#include "avcodec.h"
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#include "put_bits.h"
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#include "rangecoder.h"
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#include "mathops.h"
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#include "ffv1.h"
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const int8_t ffv1_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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const int8_t ffv1_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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const int8_t ffv1_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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const int8_t ffv1_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,
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-5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -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, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
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};
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const uint8_t ffv1_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,
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40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
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53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
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87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
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85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
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105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
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115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
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165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
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147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
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172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
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175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
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197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
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209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
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226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
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241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
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};
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av_cold int ffv1_common_init(AVCodecContext *avctx)
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{
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FFV1Context *s = avctx->priv_data;
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s->avctx = avctx;
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s->flags = avctx->flags;
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if (!avctx->width || !avctx->height)
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return AVERROR_INVALIDDATA;
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s->width = avctx->width;
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s->height = avctx->height;
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// defaults
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s->num_h_slices = 1;
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s->num_v_slices = 1;
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return 0;
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}
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int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
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{
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int j;
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fs->plane_count = f->plane_count;
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fs->transparency = f->transparency;
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for (j = 0; j < f->plane_count; j++) {
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PlaneContext *const p = &fs->plane[j];
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if (fs->ac != AC_GOLOMB_RICE) {
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if (!p->state)
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p->state = av_malloc(CONTEXT_SIZE * p->context_count *
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sizeof(uint8_t));
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if (!p->state)
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return AVERROR(ENOMEM);
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} else {
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if (!p->vlc_state)
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p->vlc_state = av_malloc(p->context_count * sizeof(VlcState));
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if (!p->vlc_state)
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return AVERROR(ENOMEM);
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}
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}
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if (fs->ac == AC_RANGE_CUSTOM_TAB) {
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//FIXME only redo if state_transition changed
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for (j = 1; j < 256; j++) {
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fs->c.one_state[j] = f->state_transition[j];
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fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j];
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}
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}
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return 0;
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}
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av_cold int ffv1_init_slice_contexts(FFV1Context *f)
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{
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int i, j;
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f->slice_count = f->num_h_slices * f->num_v_slices;
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if (f->slice_count <= 0) {
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av_log(f->avctx, AV_LOG_ERROR, "Invalid number of slices\n");
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return AVERROR(EINVAL);
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}
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for (i = 0; i < f->slice_count; i++) {
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int sx = i % f->num_h_slices;
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int sy = i / f->num_h_slices;
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int sxs = f->avctx->width * sx / f->num_h_slices;
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int sxe = f->avctx->width * (sx + 1) / f->num_h_slices;
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int sys = f->avctx->height * sy / f->num_v_slices;
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int sye = f->avctx->height * (sy + 1) / f->num_v_slices;
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FFV1Context *fs = av_mallocz(sizeof(*fs));
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if (!fs)
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goto memfail;
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f->slice_context[i] = fs;
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memcpy(fs, f, sizeof(*fs));
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memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));
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fs->slice_width = sxe - sxs;
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fs->slice_height = sye - sys;
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fs->slice_x = sxs;
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fs->slice_y = sys;
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fs->sample_buffer = av_malloc(3 * MAX_PLANES * (fs->width + 6) *
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sizeof(*fs->sample_buffer));
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if (!fs->sample_buffer) {
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av_free(fs);
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goto memfail;
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}
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}
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return 0;
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memfail:
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for (j = 0; j < i; j++) {
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av_free(f->slice_context[j]->sample_buffer);
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av_free(f->slice_context[j]);
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}
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return AVERROR(ENOMEM);
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}
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int ffv1_allocate_initial_states(FFV1Context *f)
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{
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int i;
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for (i = 0; i < f->quant_table_count; i++) {
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f->initial_states[i] = av_malloc(f->context_count[i] *
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sizeof(*f->initial_states[i]));
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if (!f->initial_states[i])
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return AVERROR(ENOMEM);
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memset(f->initial_states[i], 128,
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f->context_count[i] * sizeof(*f->initial_states[i]));
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}
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return 0;
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}
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void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
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{
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int i, j;
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for (i = 0; i < f->plane_count; i++) {
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PlaneContext *p = &fs->plane[i];
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p->interlace_bit_state[0] = 128;
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p->interlace_bit_state[1] = 128;
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if (fs->ac != AC_GOLOMB_RICE) {
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if (f->initial_states[p->quant_table_index]) {
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memcpy(p->state, f->initial_states[p->quant_table_index],
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CONTEXT_SIZE * p->context_count);
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} else
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memset(p->state, 128, CONTEXT_SIZE * p->context_count);
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} else {
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for (j = 0; j < p->context_count; j++) {
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p->vlc_state[j].drift = 0;
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p->vlc_state[j].error_sum = 4; //FFMAX((RANGE + 32)/64, 2);
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p->vlc_state[j].bias = 0;
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p->vlc_state[j].count = 1;
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}
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}
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}
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}
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av_cold int ffv1_close(AVCodecContext *avctx)
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{
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FFV1Context *s = avctx->priv_data;
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int i, j;
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for (j = 0; j < s->slice_count; j++) {
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FFV1Context *fs = s->slice_context[j];
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for (i = 0; i < s->plane_count; i++) {
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PlaneContext *p = &fs->plane[i];
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av_freep(&p->state);
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av_freep(&p->vlc_state);
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}
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av_freep(&fs->sample_buffer);
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}
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av_freep(&avctx->stats_out);
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for (j = 0; j < s->quant_table_count; j++) {
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av_freep(&s->initial_states[j]);
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for (i = 0; i < s->slice_count; i++) {
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FFV1Context *sf = s->slice_context[i];
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av_freep(&sf->rc_stat2[j]);
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}
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av_freep(&s->rc_stat2[j]);
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}
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for (i = 0; i < s->slice_count; i++)
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av_freep(&s->slice_context[i]);
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return 0;
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}
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