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Commit 269a40cb authored by Felix Paul Kühne's avatar Felix Paul Kühne
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freetype: allow on-the-fly changes of relative font size, background opacity,... 

freetype: allow on-the-fly changes of relative font size, background opacity, background color, outline thickness and text color
parent 4a51b48a
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Showing with 96 additions and 16 deletions
modules/text_renderer/freetype.c
View file @ 269a40cb
......@@ -147,6 +147,7 @@ typedef uint32_t uni_char_t;
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy( vlc_object_t * );
static int OptionCallback( vlc_object_t *, char const *, vlc_value_t, vlc_value_t, void *);
#define FONT_TEXT N_("Font")
#define MONOSPACE_FONT_TEXT N_("Monospace Font")
......@@ -369,6 +370,8 @@ struct filter_sys_t
input_attachment_t **pp_font_attachments;
int i_font_attachments;
vlc_mutex_t lock;
};
/* */
......@@ -436,12 +439,15 @@ static int GetFontSize( filter_t *p_filter )
filter_sys_t *p_sys = p_filter->p_sys;
int i_size = 0;
vlc_mutex_lock( &p_filter->p_sys->lock );
if( p_sys->i_default_font_size )
{
i_size = p_sys->i_default_font_size;
vlc_mutex_unlock( &p_filter->p_sys->lock );
}
else
{
vlc_mutex_unlock( &p_filter->p_sys->lock );
int i_ratio = var_GetInteger( p_filter, "freetype-rel-fontsize" );
if( i_ratio > 0 )
{
......@@ -1184,7 +1190,14 @@ static inline int RenderAXYZ( filter_t *p_filter,
p_region->fmt = fmt;
/* Initialize the picture background */
uint8_t i_a = p_sys->i_background_opacity;
vlc_mutex_lock( &p_sys->lock );
uint8_t i_opacity = p_sys->i_background_opacity;
uint8_t i_background_color = p_sys->i_background_color;
uint8_t i_shadow_opacity = p_sys->i_shadow_opacity;
uint8_t i_outline_opacity = p_sys->i_outline_opacity;
uint8_t i_shadow_color = p_sys->i_shadow_color;
uint8_t i_outline_color = p_sys->i_outline_color;
vlc_mutex_unlock( &p_sys->lock );
uint8_t i_x, i_y, i_z;
if (p_region->b_renderbg) {
......@@ -1194,8 +1207,8 @@ static inline int RenderAXYZ( filter_t *p_filter,
ExtractComponents, BlendPixel);
} else {
/* Render background under entire subpicture block */
ExtractComponents( p_sys->i_background_color, &i_x, &i_y, &i_z );
FillPicture( p_picture, i_a, i_x, i_y, i_z );
ExtractComponents( i_background_color, &i_x, &i_y, &i_z );
FillPicture( p_picture, i_opacity, i_x, i_y, i_z );
}
/* Render shadow then outline and then normal glyphs */
......@@ -1225,16 +1238,16 @@ static inline int RenderAXYZ( filter_t *p_filter,
if( !p_glyph )
continue;
i_a = (ch->i_color >> 24) & 0xff;
i_opacity = (ch->i_color >> 24) & 0xff;
uint32_t i_color;
switch (g) {
case 0:
i_a = i_a * p_sys->i_shadow_opacity / 255;
i_color = p_sys->i_shadow_color;
i_opacity = i_opacity * i_shadow_opacity / 255;
i_color = i_shadow_color;
break;
case 1:
i_a = i_a * p_sys->i_outline_opacity / 255;
i_color = p_sys->i_outline_color;
i_opacity = i_opacity * i_outline_opacity / 255;
i_color = i_outline_color;
break;
default:
i_color = ch->i_color;
......@@ -1247,7 +1260,7 @@ static inline int RenderAXYZ( filter_t *p_filter,
BlendAXYZGlyph( p_picture,
i_glyph_x, i_glyph_y,
i_a, i_x, i_y, i_z,
i_opacity, i_x, i_y, i_z,
p_glyph,
BlendPixel );
......@@ -1255,7 +1268,7 @@ static inline int RenderAXYZ( filter_t *p_filter,
if( g == 2 && ch->i_line_thickness > 0 )
BlendAXYZLine( p_picture,
i_glyph_x, i_glyph_y + p_glyph->top,
i_a, i_x, i_y, i_z,
i_opacity, i_x, i_y, i_z,
&ch[0],
i + 1 < p_line->i_character_count ? &ch[1] : NULL,
BlendPixel );
......@@ -2328,7 +2341,10 @@ static int ProcessLines( filter_t *p_filter,
msg_Err( p_filter, "Failed to set font size to %d", p_current_style->i_font_size );
if( p_sys->p_stroker )
{
int i_radius = (p_current_style->i_font_size << 6) * p_sys->f_outline_thickness;
vlc_mutex_lock( &p_sys->lock );
double f_outline_thickness = p_sys->f_outline_thickness;
vlc_mutex_unlock( &p_sys->lock );
int i_radius = (p_current_style->i_font_size << 6) * f_outline_thickness;
FT_Stroker_Set( p_sys->p_stroker,
i_radius,
FT_STROKER_LINECAP_ROUND,
......@@ -2671,12 +2687,18 @@ static int RenderCommon( filter_t *p_filter, subpicture_region_t *p_region_out,
STYLE_ITALIC |
STYLE_UNDERLINE |
STYLE_STRIKEOUT) );
else
else {
vlc_mutex_lock( &p_sys->lock );
uint8_t i_font_size = p_sys->i_font_size;
uint8_t i_font_color = p_sys->i_font_color;
uint8_t i_font_opacity = p_sys->i_font_opacity;
vlc_mutex_unlock( &p_sys->lock );
p_style = CreateStyle( p_sys->psz_fontfamily,
p_sys->i_font_size,
(p_sys->i_font_color & 0xffffff) |
((p_sys->i_font_opacity & 0xff) << 24),
i_font_size,
(i_font_color & 0xffffff) |
((i_font_opacity & 0xff) << 24),
0x00ffffff, 0);
}
if( p_sys->b_font_bold )
p_style->i_style_flags |= STYLE_BOLD;
......@@ -2709,7 +2731,11 @@ static int RenderCommon( filter_t *p_filter, subpicture_region_t *p_region_out,
else if( !p_chroma_list || *p_chroma_list == 0 )
p_chroma_list = p_chroma_list_rgba;
const int i_margin = p_sys->i_background_opacity > 0 ? i_max_face_height / 4 : 0;
vlc_mutex_lock( &p_sys->lock );
uint8_t i_background_opacity = p_sys->i_background_opacity;
vlc_mutex_unlock( &p_sys->lock );
const int i_margin = i_background_opacity > 0 ? i_max_face_height / 4 : 0;
for( const vlc_fourcc_t *p_chroma = p_chroma_list; *p_chroma != 0; p_chroma++ )
{
rv = VLC_EGENERIC;
......@@ -2793,8 +2819,18 @@ static int Create( vlc_object_t *p_this )
p_sys->i_font_size = 0;
p_sys->i_display_height = 0;
vlc_mutex_init( &p_sys->lock );
var_Create( p_filter, "freetype-rel-fontsize",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-background-opacity",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-background-color",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-outline-thickness",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-color",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
psz_fontfamily = var_InheritString( p_filter, "freetype-font" );
psz_monofontfamily = var_InheritString( p_filter, "freetype-monofont" );
......@@ -2938,6 +2974,12 @@ static int Create( vlc_object_t *p_this )
LoadFontsFromAttachments( p_filter );
var_AddCallback(p_this, "freetype-rel-fontsize", OptionCallback, p_this);
var_AddCallback(p_this, "freetype-background-opacity", OptionCallback, p_this);
var_AddCallback(p_this, "freetype-background-color", OptionCallback, p_this);
var_AddCallback(p_this, "freetype-outline-thickness", OptionCallback, p_this);
var_AddCallback(p_this, "freetype-color", OptionCallback, p_this);
#ifdef HAVE_STYLES
free( psz_fontfile );
free( psz_monofontfile );
......@@ -2968,6 +3010,12 @@ static void Destroy( vlc_object_t *p_this )
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
var_DelCallback(p_this, "freetype-rel-fontsize", OptionCallback, p_this);
var_DelCallback(p_this, "freetype-background-opacity", OptionCallback, p_this);
var_DelCallback(p_this, "freetype-background-color", OptionCallback, p_this);
var_DelCallback(p_this, "freetype-outline-thickness", OptionCallback, p_this);
var_DelCallback(p_this, "freetype-color", OptionCallback, p_this);
if( p_sys->pp_font_attachments )
{
for( int k = 0; k < p_sys->i_font_attachments; k++ )
......@@ -2991,7 +3039,39 @@ static void Destroy( vlc_object_t *p_this )
FT_Stroker_Done( p_sys->p_stroker );
FT_Done_Face( p_sys->p_face );
FT_Done_FreeType( p_sys->p_library );
vlc_mutex_destroy( &p_sys->lock );
free( p_sys );
}
static int OptionCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data)
{
VLC_UNUSED(oldval);
VLC_UNUSED(p_data);
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
vlc_mutex_lock( &p_sys->lock );
if( !strcmp(psz_var, "freetype-rel-fontsize") )
msg_Dbg( p_this, "changed relative font size to %lli", newval.i_int);
else if( !strcmp(psz_var, "freetype-color") ) {
p_sys->i_font_color = newval.i_int;
p_sys->i_font_color = VLC_CLIP( p_sys->i_font_color, 0, 0xFFFFFF );
} else if( !strcmp(psz_var, "freetype-background-opacity") ) {
p_sys->i_background_opacity = newval.i_int;
msg_Dbg( p_filter, "changed background opacity to %lli", newval.i_int);
} else if( !strcmp(psz_var, "freetype-outline-thickness") ) {
p_sys->f_outline_thickness = newval.i_int / 100.;
p_sys->f_outline_thickness = VLC_CLIP( p_sys->f_outline_thickness, 0.0, 0.5 );
msg_Dbg( p_filter, "changed outline thickness to %lli", newval.i_int);
} else if( !strcmp(psz_var, "freetype-background-color") ) {
p_sys->i_background_color = newval.i_int;
p_sys->i_background_color = VLC_CLIP( p_sys->i_background_color, 0, 0xFFFFFF );
msg_Dbg( p_filter, "changed background color to %lli", newval.i_int);
}
vlc_mutex_unlock( &p_sys->lock );
return VLC_SUCCESS;
}
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