Stowage/ffmpeg
2
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-12-08 06:09:50 +00:00
Code Issues Projects Releases Packages Wiki Activity

vc1: Split the decoder in components

Browse source 
Speed up the overall compilation time.
This commit is contained in:
Luca Barbato 2014-07-16 20:18:20 +02:00
parent 7ae9791b64
commit 04d14c9b68
9 changed files with 5392 additions and 5210 deletions
Download patch file Download diff file Expand all files Collapse all files

59
libavcodec/vc1_pred.h Normal file
View file

@ -0,0 +1,59 @@
/*
* VC-1 and WMV3 decoder
* Copyright (c) 2006-2007 Konstantin Shishkov
* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VC1_PRED_H
#define AVCODEC_VC1_PRED_H
#include "vc1.h"
#include "vc1data.h"
void ff_vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y,
int mv1, int r_x, int r_y, uint8_t* is_intra,
int pred_flag, int dir);
void ff_vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
int mvn, int r_x, int r_y, uint8_t* is_intra,
int dir);
void ff_vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2],
int direct, int mvtype);
void ff_vc1_pred_b_mv_intfi(VC1Context *v, int n, int *dmv_x, int *dmv_y,
int mv1, int *pred_flag);
static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
{
int n = bfrac;
#if B_FRACTION_DEN==256
if (inv)
n -= 256;
if (!qs)
return 2 * ((value * n + 255) >> 9);
return (value * n + 128) >> 8;
#else
if (inv)
n -= B_FRACTION_DEN;
if (!qs)
return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
#endif
}
#endif /* AVCODEC_VC1_PRED_H */