int RenderBlend( filter_t *p_filter, picture_t *p_outpic, picture_t *p_pic )
{
VLC_UNUSED(p_filter);
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
/* First line: simple copy */
memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
/* Remaining lines: mean value */
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += p_pic->p[i_plane].i_pitch;
}
}
EndMerge();
return VLC_SUCCESS;
}
void RenderMean( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
/* All lines: mean value */
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += 2 * p_pic->p[i_plane].i_pitch;
}
}
EndMerge();
}
int RenderLinear( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic, int order, int i_field )
{
VLC_UNUSED(p_filter);
VLC_UNUSED(order);
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
/* For BOTTOM field we need to add the first line */
if( i_field == 1 )
{
memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
p_out_end -= 2 * p_outpic->p[i_plane].i_pitch;
for( ; p_out < p_out_end ; )
{
memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
Merge( p_out, p_in, p_in + 2 * p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_in += 2 * p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
/* For TOP field we need to add the last line */
if( i_field == 0 )
{
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
}
}
EndMerge();
return VLC_SUCCESS;
}
/* See header for function doc. */
void ComposeFrame( filter_t *p_filter,
picture_t *p_outpic,
picture_t *p_inpic_top, picture_t *p_inpic_bottom,
compose_chroma_t i_output_chroma, bool swapped_uv_conversion )
{
assert( p_outpic != NULL );
assert( p_inpic_top != NULL );
assert( p_inpic_bottom != NULL );
/* Valid 4:2:0 chroma handling modes. */
assert( i_output_chroma == CC_ALTLINE ||
i_output_chroma == CC_UPCONVERT ||
i_output_chroma == CC_SOURCE_TOP ||
i_output_chroma == CC_SOURCE_BOTTOM ||
i_output_chroma == CC_MERGE );
filter_sys_t *p_sys = p_filter->p_sys;
const bool b_upconvert_chroma = i_output_chroma == CC_UPCONVERT;
for( int i_plane = 0 ; i_plane < p_inpic_top->i_planes ; i_plane++ )
{
bool b_is_chroma_plane = ( i_plane == U_PLANE || i_plane == V_PLANE );
int i_out_plane;
if( b_is_chroma_plane && b_upconvert_chroma && swapped_uv_conversion )
{
if( i_plane == U_PLANE )
i_out_plane = V_PLANE;
else /* V_PLANE */
i_out_plane = U_PLANE;
}
else
{
i_out_plane = i_plane;
}
/* Copy luma or chroma, alternating between input fields. */
if( !b_is_chroma_plane || i_output_chroma == CC_ALTLINE )
{
/* Do an alternating line copy. This is always done for luma,
and for 4:2:2 chroma. It can be requested for 4:2:0 chroma
using CC_ALTLINE (see function doc).
Note that when we get here, the number of lines matches
in input and output.
*/
plane_t dst_top;
plane_t dst_bottom;
plane_t src_top;
plane_t src_bottom;
FieldFromPlane( &dst_top, &p_outpic->p[i_out_plane], 0 );
FieldFromPlane( &dst_bottom, &p_outpic->p[i_out_plane], 1 );
FieldFromPlane( &src_top, &p_inpic_top->p[i_plane], 0 );
FieldFromPlane( &src_bottom, &p_inpic_bottom->p[i_plane], 1 );
/* Copy each field from the corresponding source. */
plane_CopyPixels( &dst_top, &src_top );
plane_CopyPixels( &dst_bottom, &src_bottom );
}
else /* Input 4:2:0, on a chroma plane, and not in altline mode. */
{
if( i_output_chroma == CC_UPCONVERT )
{
/* Upconverting copy - use all data from both input fields.
This produces an output picture with independent chroma
for each field. It can be used for general input when
the two input frames are different.
The output is 4:2:2, but the input is 4:2:0. Thus the output
has twice the lines of the input, and each full chroma plane
in the input corresponds to a field chroma plane in the
output.
*/
plane_t dst_top;
plane_t dst_bottom;
FieldFromPlane( &dst_top, &p_outpic->p[i_out_plane], 0 );
FieldFromPlane( &dst_bottom, &p_outpic->p[i_out_plane], 1 );
/* Copy each field from the corresponding source. */
plane_CopyPixels( &dst_top, &p_inpic_top->p[i_plane] );
plane_CopyPixels( &dst_bottom, &p_inpic_bottom->p[i_plane] );
}
else if( i_output_chroma == CC_SOURCE_TOP )
{
/* Copy chroma of input top field. Ignore chroma of input
bottom field. Input and output are both 4:2:0, so we just
copy the whole plane. */
plane_CopyPixels( &p_outpic->p[i_out_plane],
&p_inpic_top->p[i_plane] );
}
else if( i_output_chroma == CC_SOURCE_BOTTOM )
{
/* Copy chroma of input bottom field. Ignore chroma of input
top field. Input and output are both 4:2:0, so we just
copy the whole plane. */
plane_CopyPixels( &p_outpic->p[i_out_plane],
&p_inpic_bottom->p[i_plane] );
}
else /* i_output_chroma == CC_MERGE */
{
/* Average the chroma of the input fields.
Input and output are both 4:2:0. */
uint8_t *p_in_top, *p_in_bottom, *p_out_end, *p_out;
p_in_top = p_inpic_top->p[i_plane].p_pixels;
p_in_bottom = p_inpic_bottom->p[i_plane].p_pixels;
p_out = p_outpic->p[i_out_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_out_plane].i_pitch
* p_outpic->p[i_out_plane].i_visible_lines;
int w = FFMIN3( p_inpic_top->p[i_plane].i_visible_pitch,
p_inpic_bottom->p[i_plane].i_visible_pitch,
p_outpic->p[i_plane].i_visible_pitch );
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in_top, p_in_bottom, w );
p_out += p_outpic->p[i_out_plane].i_pitch;
p_in_top += p_inpic_top->p[i_plane].i_pitch;
p_in_bottom += p_inpic_bottom->p[i_plane].i_pitch;
}
EndMerge();
}
}
}
}
void RenderBlend( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
switch( p_filter->fmt_in.video.i_chroma )
{
case VLC_CODEC_I420:
case VLC_CODEC_J420:
case VLC_CODEC_YV12:
/* First line: simple copy */
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
/* Remaining lines: mean value */
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += p_pic->p[i_plane].i_pitch;
}
break;
case VLC_CODEC_I422:
case VLC_CODEC_J422:
/* First line: simple copy */
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
/* Remaining lines: mean value */
if( i_plane == Y_PLANE )
{
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += p_pic->p[i_plane].i_pitch;
}
}
else
{
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += 2*p_pic->p[i_plane].i_pitch;
}
}
break;
}
}
EndMerge();
}