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/*
* ColorMatrix v2 .2 for Avisynth 2.5 . x
*
* Copyright ( C ) 2006 - 2007 Kevin Stone
*
* ColorMatrix 1. x is Copyright ( C ) Wilbert Dijkhof
*
* This program is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation ; either version 2 of the License , or ( at your
* option ) any later version .
*
* This program is distributed in the hope that it will be useful , but
* OUT ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public
* License for more details .
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software Foundation ,
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* Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 USA
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*/
/**
* @ file
* ColorMatrix 2.0 is based on the original ColorMatrix filter by Wilbert
* Dijkhof . It adds the ability to convert between any of : Rec .709 , FCC ,
* Rec .601 , and SMPTE 240 M . It also makes pre and post clipping optional ,
* adds an option to use scaled or non - scaled coefficients , and more . . .
*/
# include <float.h>
# include "avfilter.h"
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# include "formats.h"
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# include "internal.h"
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# include "video.h"
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# include "libavutil/opt.h"
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# include "libavutil/pixdesc.h"
# include "libavutil/avstring.h"
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# define NS(n) ((n) < 0 ? (int)((n)*65536.0-0.5+DBL_EPSILON) : (int)((n)*65536.0+0.5))
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# define CB(n) av_clip_uint8(n)
static const double yuv_coeff [ 4 ] [ 3 ] [ 3 ] = {
{ { + 0.7152 , + 0.0722 , + 0.2126 } , // Rec.709 (0)
{ - 0.3850 , + 0.5000 , - 0.1150 } ,
{ - 0.4540 , - 0.0460 , + 0.5000 } } ,
{ { + 0.5900 , + 0.1100 , + 0.3000 } , // FCC (1)
{ - 0.3310 , + 0.5000 , - 0.1690 } ,
{ - 0.4210 , - 0.0790 , + 0.5000 } } ,
{ { + 0.5870 , + 0.1140 , + 0.2990 } , // Rec.601 (ITU-R BT.470-2/SMPTE 170M) (2)
{ - 0.3313 , + 0.5000 , - 0.1687 } ,
{ - 0.4187 , - 0.0813 , + 0.5000 } } ,
{ { + 0.7010 , + 0.0870 , + 0.2120 } , // SMPTE 240M (3)
{ - 0.3840 , + 0.5000 , - 0.1160 } ,
{ - 0.4450 , - 0.0550 , + 0.5000 } } ,
} ;
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enum ColorMode {
COLOR_MODE_NONE = - 1 ,
COLOR_MODE_BT709 ,
COLOR_MODE_FCC ,
COLOR_MODE_BT601 ,
COLOR_MODE_SMPTE240M ,
COLOR_MODE_COUNT
} ;
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typedef struct {
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const AVClass * class ;
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int yuv_convert [ 16 ] [ 3 ] [ 3 ] ;
int interlaced ;
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enum ColorMode source , dest ;
int mode ;
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int hsub , vsub ;
} ColorMatrixContext ;
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# define OFFSET(x) offsetof(ColorMatrixContext, x)
# define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption colormatrix_options [ ] = {
{ " src " , " set source color matrix " , OFFSET ( source ) , AV_OPT_TYPE_INT , { . i64 = COLOR_MODE_NONE } , COLOR_MODE_NONE , COLOR_MODE_COUNT - 1 , . flags = FLAGS , . unit = " color_mode " } ,
{ " dst " , " set destination color matrix " , OFFSET ( dest ) , AV_OPT_TYPE_INT , { . i64 = COLOR_MODE_NONE } , COLOR_MODE_NONE , COLOR_MODE_COUNT - 1 , . flags = FLAGS , . unit = " color_mode " } ,
{ " bt709 " , " set BT.709 colorspace " , 0 , AV_OPT_TYPE_CONST , { . i64 = COLOR_MODE_BT709 } , . flags = FLAGS , . unit = " color_mode " } ,
{ " fcc " , " set FCC colorspace " , 0 , AV_OPT_TYPE_CONST , { . i64 = COLOR_MODE_FCC } , . flags = FLAGS , . unit = " color_mode " } ,
{ " bt601 " , " set BT.601 colorspace " , 0 , AV_OPT_TYPE_CONST , { . i64 = COLOR_MODE_BT601 } , . flags = FLAGS , . unit = " color_mode " } ,
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{ " bt470 " , " set BT.470 colorspace " , 0 , AV_OPT_TYPE_CONST , { . i64 = COLOR_MODE_BT601 } , . flags = FLAGS , . unit = " color_mode " } ,
{ " smpte170m " , " set SMTPE-170M colorspace " , 0 , AV_OPT_TYPE_CONST , { . i64 = COLOR_MODE_BT601 } , . flags = FLAGS , . unit = " color_mode " } ,
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{ " smpte240m " , " set SMPTE-240M colorspace " , 0 , AV_OPT_TYPE_CONST , { . i64 = COLOR_MODE_SMPTE240M } , . flags = FLAGS , . unit = " color_mode " } ,
{ NULL }
} ;
AVFILTER_DEFINE_CLASS ( colormatrix ) ;
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# define ma m[0][0]
# define mb m[0][1]
# define mc m[0][2]
# define md m[1][0]
# define me m[1][1]
# define mf m[1][2]
# define mg m[2][0]
# define mh m[2][1]
# define mi m[2][2]
# define ima im[0][0]
# define imb im[0][1]
# define imc im[0][2]
# define imd im[1][0]
# define ime im[1][1]
# define imf im[1][2]
# define img im[2][0]
# define imh im[2][1]
# define imi im[2][2]
static void inverse3x3 ( double im [ 3 ] [ 3 ] , const double m [ 3 ] [ 3 ] )
{
double det = ma * ( me * mi - mf * mh ) - mb * ( md * mi - mf * mg ) + mc * ( md * mh - me * mg ) ;
det = 1.0 / det ;
ima = det * ( me * mi - mf * mh ) ;
imb = det * ( mc * mh - mb * mi ) ;
imc = det * ( mb * mf - mc * me ) ;
imd = det * ( mf * mg - md * mi ) ;
ime = det * ( ma * mi - mc * mg ) ;
imf = det * ( mc * md - ma * mf ) ;
img = det * ( md * mh - me * mg ) ;
imh = det * ( mb * mg - ma * mh ) ;
imi = det * ( ma * me - mb * md ) ;
}
static void solve_coefficients ( double cm [ 3 ] [ 3 ] , double rgb [ 3 ] [ 3 ] , const double yuv [ 3 ] [ 3 ] )
{
int i , j ;
for ( i = 0 ; i < 3 ; i + + )
for ( j = 0 ; j < 3 ; j + + )
cm [ i ] [ j ] = yuv [ i ] [ 0 ] * rgb [ 0 ] [ j ] + yuv [ i ] [ 1 ] * rgb [ 1 ] [ j ] + yuv [ i ] [ 2 ] * rgb [ 2 ] [ j ] ;
}
static void calc_coefficients ( AVFilterContext * ctx )
{
ColorMatrixContext * color = ctx - > priv ;
double rgb_coeffd [ 4 ] [ 3 ] [ 3 ] ;
double yuv_convertd [ 16 ] [ 3 ] [ 3 ] ;
int v = 0 ;
int i , j , k ;
for ( i = 0 ; i < 4 ; i + + )
inverse3x3 ( rgb_coeffd [ i ] , yuv_coeff [ i ] ) ;
for ( i = 0 ; i < 4 ; i + + ) {
for ( j = 0 ; j < 4 ; j + + ) {
solve_coefficients ( yuv_convertd [ v ] , rgb_coeffd [ i ] , yuv_coeff [ j ] ) ;
for ( k = 0 ; k < 3 ; k + + ) {
color - > yuv_convert [ v ] [ k ] [ 0 ] = NS ( yuv_convertd [ v ] [ k ] [ 0 ] ) ;
color - > yuv_convert [ v ] [ k ] [ 1 ] = NS ( yuv_convertd [ v ] [ k ] [ 1 ] ) ;
color - > yuv_convert [ v ] [ k ] [ 2 ] = NS ( yuv_convertd [ v ] [ k ] [ 2 ] ) ;
}
if ( color - > yuv_convert [ v ] [ 0 ] [ 0 ] ! = 65536 | | color - > yuv_convert [ v ] [ 1 ] [ 0 ] ! = 0 | |
color - > yuv_convert [ v ] [ 2 ] [ 0 ] ! = 0 ) {
av_log ( ctx , AV_LOG_ERROR , " error calculating conversion coefficients \n " ) ;
}
v + + ;
}
}
}
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static const char * const color_modes [ ] = { " bt709 " , " fcc " , " bt601 " , " smpte240m " } ;
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static av_cold int init ( AVFilterContext * ctx )
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{
ColorMatrixContext * color = ctx - > priv ;
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if ( color - > dest = = COLOR_MODE_NONE ) {
av_log ( ctx , AV_LOG_ERROR , " Unspecified destination color space \n " ) ;
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return AVERROR ( EINVAL ) ;
}
if ( color - > source = = color - > dest ) {
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av_log ( ctx , AV_LOG_ERROR , " Source and destination color space must not be identical \n " ) ;
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return AVERROR ( EINVAL ) ;
}
return 0 ;
}
static void process_frame_uyvy422 ( ColorMatrixContext * color ,
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AVFrame * dst , AVFrame * src )
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{
const unsigned char * srcp = src - > data [ 0 ] ;
const int src_pitch = src - > linesize [ 0 ] ;
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const int height = src - > height ;
const int width = src - > width * 2 ;
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unsigned char * dstp = dst - > data [ 0 ] ;
const int dst_pitch = dst - > linesize [ 0 ] ;
const int c2 = color - > yuv_convert [ color - > mode ] [ 0 ] [ 1 ] ;
const int c3 = color - > yuv_convert [ color - > mode ] [ 0 ] [ 2 ] ;
const int c4 = color - > yuv_convert [ color - > mode ] [ 1 ] [ 1 ] ;
const int c5 = color - > yuv_convert [ color - > mode ] [ 1 ] [ 2 ] ;
const int c6 = color - > yuv_convert [ color - > mode ] [ 2 ] [ 1 ] ;
const int c7 = color - > yuv_convert [ color - > mode ] [ 2 ] [ 2 ] ;
int x , y ;
for ( y = 0 ; y < height ; y + + ) {
for ( x = 0 ; x < width ; x + = 4 ) {
const int u = srcp [ x + 0 ] - 128 ;
const int v = srcp [ x + 2 ] - 128 ;
const int uvval = c2 * u + c3 * v + 1081344 ;
dstp [ x + 0 ] = CB ( ( c4 * u + c5 * v + 8421376 ) > > 16 ) ;
dstp [ x + 1 ] = CB ( ( 65536 * ( srcp [ x + 1 ] - 16 ) + uvval ) > > 16 ) ;
dstp [ x + 2 ] = CB ( ( c6 * u + c7 * v + 8421376 ) > > 16 ) ;
dstp [ x + 3 ] = CB ( ( 65536 * ( srcp [ x + 3 ] - 16 ) + uvval ) > > 16 ) ;
}
srcp + = src_pitch ;
dstp + = dst_pitch ;
}
}
static void process_frame_yuv422p ( ColorMatrixContext * color ,
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AVFrame * dst , AVFrame * src )
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{
const unsigned char * srcpU = src - > data [ 1 ] ;
const unsigned char * srcpV = src - > data [ 2 ] ;
const unsigned char * srcpY = src - > data [ 0 ] ;
const int src_pitchY = src - > linesize [ 0 ] ;
const int src_pitchUV = src - > linesize [ 1 ] ;
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const int height = src - > height ;
const int width = src - > width ;
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unsigned char * dstpU = dst - > data [ 1 ] ;
unsigned char * dstpV = dst - > data [ 2 ] ;
unsigned char * dstpY = dst - > data [ 0 ] ;
const int dst_pitchY = dst - > linesize [ 0 ] ;
const int dst_pitchUV = dst - > linesize [ 1 ] ;
const int c2 = color - > yuv_convert [ color - > mode ] [ 0 ] [ 1 ] ;
const int c3 = color - > yuv_convert [ color - > mode ] [ 0 ] [ 2 ] ;
const int c4 = color - > yuv_convert [ color - > mode ] [ 1 ] [ 1 ] ;
const int c5 = color - > yuv_convert [ color - > mode ] [ 1 ] [ 2 ] ;
const int c6 = color - > yuv_convert [ color - > mode ] [ 2 ] [ 1 ] ;
const int c7 = color - > yuv_convert [ color - > mode ] [ 2 ] [ 2 ] ;
int x , y ;
for ( y = 0 ; y < height ; y + + ) {
for ( x = 0 ; x < width ; x + = 2 ) {
const int u = srcpU [ x > > 1 ] - 128 ;
const int v = srcpV [ x > > 1 ] - 128 ;
const int uvval = c2 * u + c3 * v + 1081344 ;
dstpY [ x + 0 ] = CB ( ( 65536 * ( srcpY [ x + 0 ] - 16 ) + uvval ) > > 16 ) ;
dstpY [ x + 1 ] = CB ( ( 65536 * ( srcpY [ x + 1 ] - 16 ) + uvval ) > > 16 ) ;
dstpU [ x > > 1 ] = CB ( ( c4 * u + c5 * v + 8421376 ) > > 16 ) ;
dstpV [ x > > 1 ] = CB ( ( c6 * u + c7 * v + 8421376 ) > > 16 ) ;
}
srcpY + = src_pitchY ;
dstpY + = dst_pitchY ;
srcpU + = src_pitchUV ;
srcpV + = src_pitchUV ;
dstpU + = dst_pitchUV ;
dstpV + = dst_pitchUV ;
}
}
static void process_frame_yuv420p ( ColorMatrixContext * color ,
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AVFrame * dst , AVFrame * src )
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{
const unsigned char * srcpU = src - > data [ 1 ] ;
const unsigned char * srcpV = src - > data [ 2 ] ;
const unsigned char * srcpY = src - > data [ 0 ] ;
const unsigned char * srcpN = src - > data [ 0 ] + src - > linesize [ 0 ] ;
const int src_pitchY = src - > linesize [ 0 ] ;
const int src_pitchUV = src - > linesize [ 1 ] ;
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const int height = src - > height ;
const int width = src - > width ;
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unsigned char * dstpU = dst - > data [ 1 ] ;
unsigned char * dstpV = dst - > data [ 2 ] ;
unsigned char * dstpY = dst - > data [ 0 ] ;
unsigned char * dstpN = dst - > data [ 0 ] + dst - > linesize [ 0 ] ;
const int dst_pitchY = dst - > linesize [ 0 ] ;
const int dst_pitchUV = dst - > linesize [ 1 ] ;
const int c2 = color - > yuv_convert [ color - > mode ] [ 0 ] [ 1 ] ;
const int c3 = color - > yuv_convert [ color - > mode ] [ 0 ] [ 2 ] ;
const int c4 = color - > yuv_convert [ color - > mode ] [ 1 ] [ 1 ] ;
const int c5 = color - > yuv_convert [ color - > mode ] [ 1 ] [ 2 ] ;
const int c6 = color - > yuv_convert [ color - > mode ] [ 2 ] [ 1 ] ;
const int c7 = color - > yuv_convert [ color - > mode ] [ 2 ] [ 2 ] ;
int x , y ;
for ( y = 0 ; y < height ; y + = 2 ) {
for ( x = 0 ; x < width ; x + = 2 ) {
const int u = srcpU [ x > > 1 ] - 128 ;
const int v = srcpV [ x > > 1 ] - 128 ;
const int uvval = c2 * u + c3 * v + 1081344 ;
dstpY [ x + 0 ] = CB ( ( 65536 * ( srcpY [ x + 0 ] - 16 ) + uvval ) > > 16 ) ;
dstpY [ x + 1 ] = CB ( ( 65536 * ( srcpY [ x + 1 ] - 16 ) + uvval ) > > 16 ) ;
dstpN [ x + 0 ] = CB ( ( 65536 * ( srcpN [ x + 0 ] - 16 ) + uvval ) > > 16 ) ;
dstpN [ x + 1 ] = CB ( ( 65536 * ( srcpN [ x + 1 ] - 16 ) + uvval ) > > 16 ) ;
dstpU [ x > > 1 ] = CB ( ( c4 * u + c5 * v + 8421376 ) > > 16 ) ;
dstpV [ x > > 1 ] = CB ( ( c6 * u + c7 * v + 8421376 ) > > 16 ) ;
}
srcpY + = src_pitchY < < 1 ;
dstpY + = dst_pitchY < < 1 ;
srcpN + = src_pitchY < < 1 ;
dstpN + = dst_pitchY < < 1 ;
srcpU + = src_pitchUV ;
srcpV + = src_pitchUV ;
dstpU + = dst_pitchUV ;
dstpV + = dst_pitchUV ;
}
}
static int config_input ( AVFilterLink * inlink )
{
AVFilterContext * ctx = inlink - > dst ;
ColorMatrixContext * color = ctx - > priv ;
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const AVPixFmtDescriptor * pix_desc = av_pix_fmt_desc_get ( inlink - > format ) ;
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color - > hsub = pix_desc - > log2_chroma_w ;
color - > vsub = pix_desc - > log2_chroma_h ;
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av_log ( ctx , AV_LOG_VERBOSE , " %s -> %s \n " ,
color_modes [ color - > source ] , color_modes [ color - > dest ] ) ;
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return 0 ;
}
static int query_formats ( AVFilterContext * ctx )
{
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static const enum AVPixelFormat pix_fmts [ ] = {
AV_PIX_FMT_YUV422P ,
AV_PIX_FMT_YUV420P ,
AV_PIX_FMT_UYVY422 ,
AV_PIX_FMT_NONE
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} ;
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ff_set_common_formats ( ctx , ff_make_format_list ( pix_fmts ) ) ;
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return 0 ;
}
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static int filter_frame ( AVFilterLink * link , AVFrame * in )
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{
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AVFilterContext * ctx = link - > dst ;
ColorMatrixContext * color = ctx - > priv ;
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AVFilterLink * outlink = ctx - > outputs [ 0 ] ;
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AVFrame * out ;
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out = ff_get_video_buffer ( outlink , outlink - > w , outlink - > h ) ;
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if ( ! out ) {
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av_frame_free ( & in ) ;
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return AVERROR ( ENOMEM ) ;
}
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av_frame_copy_props ( out , in ) ;
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if ( color - > source = = COLOR_MODE_NONE ) {
enum AVColorSpace cs = av_frame_get_colorspace ( in ) ;
enum ColorMode source ;
switch ( cs ) {
case AVCOL_SPC_BT709 : source = COLOR_MODE_BT709 ; break ;
case AVCOL_SPC_FCC : source = COLOR_MODE_FCC ; break ;
case AVCOL_SPC_SMPTE240M : source = COLOR_MODE_SMPTE240M ; break ;
case AVCOL_SPC_BT470BG : source = COLOR_MODE_BT601 ; break ;
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case AVCOL_SPC_SMPTE170M : source = COLOR_MODE_BT601 ; break ;
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default :
av_log ( ctx , AV_LOG_ERROR , " Input frame does not specify a supported colorspace, and none has been specified as source either \n " ) ;
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av_frame_free ( & out ) ;
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return AVERROR ( EINVAL ) ;
}
color - > mode = source * 4 + color - > dest ;
} else
color - > mode = color - > source * 4 + color - > dest ;
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switch ( color - > dest ) {
case COLOR_MODE_BT709 : av_frame_set_colorspace ( out , AVCOL_SPC_BT709 ) ; break ;
case COLOR_MODE_FCC : av_frame_set_colorspace ( out , AVCOL_SPC_FCC ) ; break ;
case COLOR_MODE_SMPTE240M : av_frame_set_colorspace ( out , AVCOL_SPC_SMPTE240M ) ; break ;
case COLOR_MODE_BT601 : av_frame_set_colorspace ( out , AVCOL_SPC_BT470BG ) ; break ;
}
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calc_coefficients ( ctx ) ;
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if ( in - > format = = AV_PIX_FMT_YUV422P )
process_frame_yuv422p ( color , out , in ) ;
else if ( in - > format = = AV_PIX_FMT_YUV420P )
process_frame_yuv420p ( color , out , in ) ;
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else
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process_frame_uyvy422 ( color , out , in ) ;
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av_frame_free ( & in ) ;
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return ff_filter_frame ( outlink , out ) ;
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}
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static const AVFilterPad colormatrix_inputs [ ] = {
{
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. name = " default " ,
. type = AVMEDIA_TYPE_VIDEO ,
. config_props = config_input ,
. filter_frame = filter_frame ,
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} ,
{ NULL }
} ;
static const AVFilterPad colormatrix_outputs [ ] = {
{
. name = " default " ,
. type = AVMEDIA_TYPE_VIDEO ,
} ,
{ NULL }
} ;
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AVFilter ff_vf_colormatrix = {
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. name = " colormatrix " ,
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. description = NULL_IF_CONFIG_SMALL ( " Convert color matrix. " ) ,
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. priv_size = sizeof ( ColorMatrixContext ) ,
. init = init ,
. query_formats = query_formats ,
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. inputs = colormatrix_inputs ,
. outputs = colormatrix_outputs ,
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. priv_class = & colormatrix_class ,
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. flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC ,
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} ;