Commit bfb5a9cc authored by Steve Lhomme's avatar Steve Lhomme Committed by Jean-Baptiste Kempf

i420_yuy2: fix using buffer areas not visible

fixes #16686
Signed-off-by: Jean-Baptiste Kempf's avatarJean-Baptiste Kempf <jb@videolan.org>
parent ca3e55c7
......@@ -119,8 +119,8 @@ static int Activate( vlc_object_t *p_this )
if( !vlc_CPU_capable() )
return VLC_EGENERIC;
if( p_filter->fmt_in.video.i_width & 1
|| p_filter->fmt_in.video.i_height & 1 )
if( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) & 1
|| (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) & 1 )
{
return -1;
}
......@@ -232,14 +232,14 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
vector unsigned char uv_vec;
vector unsigned char y_vec;
if( !( ( p_filter->fmt_in.video.i_width % 32 ) |
( p_filter->fmt_in.video.i_height % 2 ) ) )
if( !( ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 32 ) |
( (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) % 2 ) ) )
{
/* Width is a multiple of 32, we take 2 lines at a time */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
VEC_NEXT_LINES( );
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -249,15 +249,15 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
}
#warning FIXME: converting widths % 16 but !widths % 32 is broken on altivec
#if 0
else if( !( ( p_filter->fmt_in.video.i_width % 16 ) |
( p_filter->fmt_in.video.i_height % 4 ) ) )
else if( !( ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) |
( (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) % 4 ) ) )
{
/* Width is only a multiple of 16, we take 4 lines at a time */
for( i_y = p_filter->fmt_in.video.i_height / 4 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 4 ; i_y-- ; )
{
/* Line 1 and 2, pixels 0 to ( width - 16 ) */
VEC_NEXT_LINES( );
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -273,7 +273,7 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
VEC_MERGE( vec_mergel );
/* Line 3 and 4, pixels 16 to ( width ) */
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -291,14 +291,17 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
#endif
const int i_source_margin = p_source->p[0].i_pitch
- p_source->p[0].i_visible_pitch;
- p_source->p[0].i_visible_pitch
- p_filter->fmt_in.video.i_x_offset;
const int i_source_margin_c = p_source->p[1].i_pitch
- p_source->p[1].i_visible_pitch;
- p_source->p[1].i_visible_pitch
- ( p_filter->fmt_in.video.i_x_offset / 2 );
const int i_dest_margin = p_dest->p->i_pitch
- p_dest->p->i_visible_pitch;
- p_dest->p->i_visible_pitch
- ( p_filter->fmt_out.video.i_x_offset * 2 );
#if !defined(MODULE_NAME_IS_i420_yuy2_sse2)
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -307,7 +310,7 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
p_y2 += p_source->p[Y_PLANE].i_pitch;
#if !defined (MODULE_NAME_IS_i420_yuy2_mmx)
for( i_x = p_filter->fmt_in.video.i_width / 8; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 8; i_x-- ; )
{
C_YUV420_YUYV( );
C_YUV420_YUYV( );
......@@ -315,12 +318,12 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
C_YUV420_YUYV( );
}
#else
for( i_x = p_filter->fmt_in.video.i_width / 8 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 8 ; i_x-- ; )
{
MMX_CALL( MMX_YUV420_YUYV );
}
#endif
for( i_x = ( p_filter->fmt_in.video.i_width % 8 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 8 ) / 2; i_x-- ; )
{
C_YUV420_YUYV( );
}
......@@ -350,7 +353,7 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
((intptr_t)p_line2|(intptr_t)p_y2))) )
{
/* use faster SSE2 aligned fetch and store */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -358,11 +361,11 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 16 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 16 ; i_x-- ; )
{
SSE2_CALL( SSE2_YUV420_YUYV_ALIGNED );
}
for( i_x = ( p_filter->fmt_in.video.i_width % 16 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) / 2; i_x-- ; )
{
C_YUV420_YUYV( );
}
......@@ -376,7 +379,7 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
else
{
/* use slower SSE2 unaligned fetch and store */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -384,11 +387,11 @@ static void I420_YUY2( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 16 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 16 ; i_x-- ; )
{
SSE2_CALL( SSE2_YUV420_YUYV_UNALIGNED );
}
for( i_x = ( p_filter->fmt_in.video.i_width % 16 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) / 2; i_x-- ; )
{
C_YUV420_YUYV( );
}
......@@ -444,14 +447,14 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
vector unsigned char vu_vec;
vector unsigned char y_vec;
if( !( ( p_filter->fmt_in.video.i_width % 32 ) |
( p_filter->fmt_in.video.i_height % 2 ) ) )
if( !( ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 32 ) |
( (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) % 2 ) ) )
{
/* Width is a multiple of 32, we take 2 lines at a time */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
VEC_NEXT_LINES( );
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -459,15 +462,15 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
}
}
}
else if( !( ( p_filter->fmt_in.video.i_width % 16 ) |
( p_filter->fmt_in.video.i_height % 4 ) ) )
else if( !( ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) |
( (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) % 4 ) ) )
{
/* Width is only a multiple of 16, we take 4 lines at a time */
for( i_y = p_filter->fmt_in.video.i_height / 4 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 4 ; i_y-- ; )
{
/* Line 1 and 2, pixels 0 to ( width - 16 ) */
VEC_NEXT_LINES( );
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -483,7 +486,7 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
VEC_MERGE( vec_mergel );
/* Line 3 and 4, pixels 16 to ( width ) */
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -507,7 +510,7 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
- p_dest->p->i_visible_pitch;
#if !defined(MODULE_NAME_IS_i420_yuy2_sse2)
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -515,7 +518,7 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 8 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 8 ; i_x-- ; )
{
#if !defined (MODULE_NAME_IS_i420_yuy2_mmx)
C_YUV420_YVYU( );
......@@ -526,7 +529,7 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
MMX_CALL( MMX_YUV420_YVYU );
#endif
}
for( i_x = ( p_filter->fmt_in.video.i_width % 8 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 8 ) / 2; i_x-- ; )
{
C_YUV420_YVYU( );
}
......@@ -557,7 +560,7 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
((intptr_t)p_line2|(intptr_t)p_y2))) )
{
/* use faster SSE2 aligned fetch and store */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -565,11 +568,11 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 16 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 16 ; i_x-- ; )
{
SSE2_CALL( SSE2_YUV420_YVYU_ALIGNED );
}
for( i_x = ( p_filter->fmt_in.video.i_width % 16 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) / 2; i_x-- ; )
{
C_YUV420_YVYU( );
}
......@@ -585,7 +588,7 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
else
{
/* use slower SSE2 unaligned fetch and store */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -593,11 +596,11 @@ static void I420_YVYU( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 16 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 16 ; i_x-- ; )
{
SSE2_CALL( SSE2_YUV420_YVYU_UNALIGNED );
}
for( i_x = ( p_filter->fmt_in.video.i_width % 16 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) / 2; i_x-- ; )
{
C_YUV420_YVYU( );
}
......@@ -654,14 +657,14 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
vector unsigned char uv_vec;
vector unsigned char y_vec;
if( !( ( p_filter->fmt_in.video.i_width % 32 ) |
( p_filter->fmt_in.video.i_height % 2 ) ) )
if( !( ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 32 ) |
( (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) % 2 ) ) )
{
/* Width is a multiple of 32, we take 2 lines at a time */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
VEC_NEXT_LINES( );
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -669,15 +672,15 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
}
}
}
else if( !( ( p_filter->fmt_in.video.i_width % 16 ) |
( p_filter->fmt_in.video.i_height % 4 ) ) )
else if( !( ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) |
( (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) % 4 ) ) )
{
/* Width is only a multiple of 16, we take 4 lines at a time */
for( i_y = p_filter->fmt_in.video.i_height / 4 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 4 ; i_y-- ; )
{
/* Line 1 and 2, pixels 0 to ( width - 16 ) */
VEC_NEXT_LINES( );
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -693,7 +696,7 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
VEC_MERGE( vec_mergel );
/* Line 3 and 4, pixels 16 to ( width ) */
for( i_x = p_filter->fmt_in.video.i_width / 32 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 32 ; i_x-- ; )
{
VEC_LOAD_UV( );
VEC_MERGE( vec_mergeh );
......@@ -717,7 +720,7 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
- p_dest->p->i_visible_pitch;
#if !defined(MODULE_NAME_IS_i420_yuy2_sse2)
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -725,7 +728,7 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 8 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 8 ; i_x-- ; )
{
#if !defined (MODULE_NAME_IS_i420_yuy2_mmx)
C_YUV420_UYVY( );
......@@ -736,7 +739,7 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
MMX_CALL( MMX_YUV420_UYVY );
#endif
}
for( i_x = ( p_filter->fmt_in.video.i_width % 8 ) / 2; i_x--; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 8 ) / 2; i_x--; )
{
C_YUV420_UYVY( );
}
......@@ -767,7 +770,7 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
((intptr_t)p_line2|(intptr_t)p_y2))) )
{
/* use faster SSE2 aligned fetch and store */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -775,11 +778,11 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 16 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 16 ; i_x-- ; )
{
SSE2_CALL( SSE2_YUV420_UYVY_ALIGNED );
}
for( i_x = ( p_filter->fmt_in.video.i_width % 16 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) / 2; i_x-- ; )
{
C_YUV420_UYVY( );
}
......@@ -795,7 +798,7 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
else
{
/* use slower SSE2 unaligned fetch and store */
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -803,11 +806,11 @@ static void I420_UYVY( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 16 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 16 ; i_x-- ; )
{
SSE2_CALL( SSE2_YUV420_UYVY_UNALIGNED );
}
for( i_x = ( p_filter->fmt_in.video.i_width % 16 ) / 2; i_x-- ; )
for( i_x = ( (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) % 16 ) / 2; i_x-- ; )
{
C_YUV420_UYVY( );
}
......@@ -859,7 +862,7 @@ static void I420_Y211( filter_t *p_filter, picture_t *p_source,
const int i_dest_margin = p_dest->p->i_pitch
- p_dest->p->i_visible_pitch;
for( i_y = p_filter->fmt_in.video.i_height / 2 ; i_y-- ; )
for( i_y = (p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height) / 2 ; i_y-- ; )
{
p_line1 = p_line2;
p_line2 += p_dest->p->i_pitch;
......@@ -867,7 +870,7 @@ static void I420_Y211( filter_t *p_filter, picture_t *p_source,
p_y1 = p_y2;
p_y2 += p_source->p[Y_PLANE].i_pitch;
for( i_x = p_filter->fmt_in.video.i_width / 8 ; i_x-- ; )
for( i_x = (p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width) / 8 ; i_x-- ; )
{
C_YUV420_Y211( );
C_YUV420_Y211( );
......
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