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vlc-2-2
Commit 5b7f672c authored by Felix Abecassis's avatar Felix Abecassis Committed by Jean-Baptiste Kempf
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swscale: scale the picture using the visible dimension. 

Solve the green line bug during thumbnailing.
Signed-off-by: default avatarJean-Baptiste Kempf <jb@videolan.org>
parent 454654e2
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Showing with 28 additions and 24 deletions
modules/video_chroma/swscale.c
View file @ 5b7f672c
......@@ -200,9 +200,11 @@ static int OpenScaler( vlc_object_t *p_this )
return VLC_EGENERIC;
}
msg_Dbg( p_filter, "%ix%i chroma: %4.4s -> %ix%i chroma: %4.4s with scaling using %s",
msg_Dbg( p_filter, "%ix%i (%ix%i) chroma: %4.4s -> %ix%i (%ix%i) chroma: %4.4s with scaling using %s",
p_filter->fmt_in.video.i_visible_width, p_filter->fmt_in.video.i_visible_height,
p_filter->fmt_in.video.i_width, p_filter->fmt_in.video.i_height,
(char *)&p_filter->fmt_in.video.i_chroma,
p_filter->fmt_out.video.i_visible_width, p_filter->fmt_out.video.i_visible_height,
p_filter->fmt_out.video.i_width, p_filter->fmt_out.video.i_height,
(char *)&p_filter->fmt_out.video.i_chroma,
ppsz_mode_descriptions[i_sws_mode] );
......@@ -326,8 +328,8 @@ static int GetParameters( ScalerConfiguration *p_cfg,
p_cfg->b_has_a = b_has_ai && b_has_ao;
p_cfg->b_add_a = (!b_has_ai) && b_has_ao;
p_cfg->b_copy = i_fmti == i_fmto &&
p_fmti->i_width == p_fmto->i_width &&
p_fmti->i_height == p_fmto->i_height;
p_fmti->i_visible_width == p_fmto->i_visible_width &&
p_fmti->i_visible_height == p_fmto->i_visible_height;
p_cfg->b_swap_uvi = b_swap_uvi;
p_cfg->b_swap_uvo = b_swap_uvo;
p_cfg->i_sws_flags = i_sws_flags;
......@@ -360,27 +362,30 @@ static int Init( filter_t *p_filter )
msg_Err( p_filter, "format not supported" );
return VLC_EGENERIC;
}
if( p_fmti->i_width <= 0 || p_fmto->i_width <= 0 )
if( p_fmti->i_visible_width <= 0 || p_fmti->i_visible_height <= 0 ||
p_fmto->i_visible_width <= 0 || p_fmto->i_visible_height <= 0 )
{
msg_Err( p_filter, "0 width not supported" );
msg_Err( p_filter, "invalid scaling: %ix%i -> %ix%i",
p_fmti->i_visible_width, p_fmti->i_visible_height,
p_fmto->i_visible_width, p_fmto->i_visible_height);
return VLC_EGENERIC;
}
/* swscale does not like too small width */
p_sys->i_extend_factor = 1;
while( __MIN( p_fmti->i_width, p_fmto->i_width ) * p_sys->i_extend_factor < MINIMUM_WIDTH)
while( __MIN( p_fmti->i_visible_width, p_fmto->i_visible_width ) * p_sys->i_extend_factor < MINIMUM_WIDTH)
p_sys->i_extend_factor++;
const unsigned i_fmti_width = p_fmti->i_width * p_sys->i_extend_factor;
const unsigned i_fmto_width = p_fmto->i_width * p_sys->i_extend_factor;
const unsigned i_fmti_visible_width = p_fmti->i_visible_width * p_sys->i_extend_factor;
const unsigned i_fmto_visible_width = p_fmto->i_visible_width * p_sys->i_extend_factor;
for( int n = 0; n < (cfg.b_has_a ? 2 : 1); n++ )
{
const int i_fmti = n == 0 ? cfg.i_fmti : PIX_FMT_GRAY8;
const int i_fmto = n == 0 ? cfg.i_fmto : PIX_FMT_GRAY8;
struct SwsContext *ctx;
ctx = sws_getContext( i_fmti_width, p_fmti->i_height, i_fmti,
i_fmto_width, p_fmto->i_height, i_fmto,
ctx = sws_getContext( i_fmti_visible_width, p_fmti->i_visible_height, i_fmti,
i_fmto_visible_width, p_fmto->i_visible_height, i_fmto,
cfg.i_sws_flags | p_sys->i_cpu_mask,
p_sys->p_src_filter, p_sys->p_dst_filter, 0 );
if( n == 0 )
......@@ -390,13 +395,13 @@ static int Init( filter_t *p_filter )
}
if( p_sys->ctxA )
{
p_sys->p_src_a = picture_New( VLC_CODEC_GREY, i_fmti_width, p_fmti->i_height, 0, 1 );
p_sys->p_dst_a = picture_New( VLC_CODEC_GREY, i_fmto_width, p_fmto->i_height, 0, 1 );
p_sys->p_src_a = picture_New( VLC_CODEC_GREY, i_fmti_visible_width, p_fmti->i_visible_height, 0, 1 );
p_sys->p_dst_a = picture_New( VLC_CODEC_GREY, i_fmto_visible_width, p_fmto->i_visible_height, 0, 1 );
}
if( p_sys->i_extend_factor != 1 )
{
p_sys->p_src_e = picture_New( p_fmti->i_chroma, i_fmti_width, p_fmti->i_height, 0, 1 );
p_sys->p_dst_e = picture_New( p_fmto->i_chroma, i_fmto_width, p_fmto->i_height, 0, 1 );
p_sys->p_src_e = picture_New( p_fmti->i_chroma, i_fmti_visible_width, p_fmti->i_visible_height, 0, 1 );
p_sys->p_dst_e = picture_New( p_fmto->i_chroma, i_fmto_visible_width, p_fmto->i_visible_height, 0, 1 );
if( p_sys->p_src_e )
memset( p_sys->p_src_e->p[0].p_pixels, 0, p_sys->p_src_e->p[0].i_pitch * p_sys->p_src_e->p[0].i_lines );
......@@ -420,11 +425,10 @@ static int Init( filter_t *p_filter )
p_sys->b_swap_uvi = cfg.b_swap_uvi;
p_sys->b_swap_uvo = cfg.b_swap_uvo;
video_format_ScaleCropAr( p_fmto, p_fmti );
#if 0
msg_Dbg( p_filter, "%ix%i chroma: %4.4s -> %ix%i chroma: %4.4s extend by %d",
p_fmti->i_width, p_fmti->i_height, (char *)&p_fmti->i_chroma,
p_fmto->i_width, p_fmto->i_height, (char *)&p_fmto->i_chroma,
msg_Dbg( p_filter, "%ix%i (%ix%i) chroma: %4.4s -> %ix%i (%ix%i) chroma: %4.4s extend by %d",
p_fmti->i_visible_width, p_fmti->i_visible_height, p_fmti->i_width, p_fmti->i_height, (char *)&p_fmti->i_chroma,
p_fmto->i_visible_width, p_fmto->i_visible_height, p_fmto->i_width, p_fmto->i_height, (char *)&p_fmto->i_chroma,
p_sys->i_extend_factor );
#endif
return VLC_SUCCESS;
......@@ -605,23 +609,23 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
else if( p_sys->b_copy )
SwapUV( p_dst, p_src );
else
Convert( p_filter, p_sys->ctx, p_dst, p_src, p_fmti->i_height, 0, 3,
Convert( p_filter, p_sys->ctx, p_dst, p_src, p_fmti->i_visible_height, 0, 3,
p_sys->b_swap_uvi, p_sys->b_swap_uvo );
if( p_sys->ctxA )
{
/* We extract the A plane to rescale it, and then we reinject it. */
if( p_fmti->i_chroma == VLC_CODEC_RGBA )
ExtractA( p_sys->p_src_a, p_src, p_fmti->i_width * p_sys->i_extend_factor, p_fmti->i_height, OFFSET_A );
ExtractA( p_sys->p_src_a, p_src, p_fmti->i_visible_width * p_sys->i_extend_factor, p_fmti->i_visible_height, OFFSET_A );
else if( p_fmti->i_chroma == VLC_CODEC_ARGB )
ExtractA( p_sys->p_src_a, p_src, p_fmti->i_width * p_sys->i_extend_factor, p_fmti->i_height, 0 );
ExtractA( p_sys->p_src_a, p_src, p_fmti->i_visible_width * p_sys->i_extend_factor, p_fmti->i_visible_height, 0 );
else
plane_CopyPixels( p_sys->p_src_a->p, p_src->p+A_PLANE );
Convert( p_filter, p_sys->ctxA, p_sys->p_dst_a, p_sys->p_src_a, p_fmti->i_height, 0, 1, false, false );
Convert( p_filter, p_sys->ctxA, p_sys->p_dst_a, p_sys->p_src_a, p_fmti->i_visible_height, 0, 1, false, false );
if( p_fmto->i_chroma == VLC_CODEC_RGBA )
InjectA( p_dst, p_sys->p_dst_a, p_fmto->i_width * p_sys->i_extend_factor, p_fmto->i_height, OFFSET_A );
InjectA( p_dst, p_sys->p_dst_a, p_fmto->i_visible_width * p_sys->i_extend_factor, p_fmto->i_visible_height, OFFSET_A );
else if( p_fmto->i_chroma == VLC_CODEC_ARGB )
InjectA( p_dst, p_sys->p_dst_a, p_fmto->i_width * p_sys->i_extend_factor, p_fmto->i_height, 0 );
InjectA( p_dst, p_sys->p_dst_a, p_fmto->i_visible_width * p_sys->i_extend_factor, p_fmto->i_visible_height, 0 );
else
plane_CopyPixels( p_dst->p+A_PLANE, p_sys->p_dst_a->p );
}
......
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