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vlc-2-2
Commit 7a1372dd authored by Laurent Aimar's avatar Laurent Aimar
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Simplified a lot karaoke rendering in freetype. 

It is not as full featured as before, but it is much simpler and it will make
it easier to improved the module.
parent a296434c
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Showing with 31 additions and 100 deletions
modules/misc/text_renderer/freetype.c
View file @ 7a1372dd
......@@ -204,9 +204,7 @@ struct line_desc_t
/** list of relative positions for the glyphs */
FT_Vector *p_glyph_pos;
/** list of RGB information for styled text */
uint32_t *p_fg_rgb;
uint32_t *p_bg_rgb;
uint8_t *p_fg_bg_ratio; /* 0x00=100% FG --> 0x7F=100% BG */
uint32_t *pi_color;
/** underline information -- only supplied if text should be underlined */
int *pi_underline_offset;
uint16_t *pi_underline_thickness;
......@@ -602,7 +600,7 @@ static int RenderYUVP( filter_t *p_filter, subpicture_region_t *p_region,
/* Calculate text color components
* Only use the first color */
YUVFromRGB( p_line->p_fg_rgb[ 0 ], &i_y, &i_u, &i_v );
YUVFromRGB( p_line->pi_color[ 0 ], &i_y, &i_u, &i_v );
/* Build palette */
fmt.p_palette->i_entries = 16;
......@@ -945,28 +943,12 @@ static int RenderYUVA( filter_t *p_filter, subpicture_region_t *p_region,
/* Every glyph can (and in fact must) have its own color */
uint8_t i_y, i_u, i_v;
YUVFromRGB( p_line->p_fg_rgb[ i ], &i_y, &i_u, &i_v );
YUVFromRGB( p_line->pi_color[ i ], &i_y, &i_u, &i_v );
for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
{
for( int x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
{
uint8_t i_y_local = i_y;
uint8_t i_u_local = i_u;
uint8_t i_v_local = i_v;
if( p_line->p_fg_bg_ratio != 0x00 )
{
int i_split = p_glyph->bitmap.width *
p_line->p_fg_bg_ratio[ i ] / 0x7f;
if( x > i_split )
{
YUVFromRGB( p_line->p_bg_rgb[ i ],
&i_y_local, &i_u_local, &i_v_local );
}
}
if( p_glyph->bitmap.buffer[i_bitmap_offset] )
{
p_dst_y[i_offset+x] = ((p_dst_y[i_offset+x] *(255-(int)p_glyph->bitmap.buffer[i_bitmap_offset])) +
......@@ -1602,9 +1584,7 @@ static void FreeLine( line_desc_t *p_line )
free( p_line->pp_glyphs );
free( p_line->p_glyph_pos );
free( p_line->p_fg_rgb );
free( p_line->p_bg_rgb );
free( p_line->p_fg_bg_ratio );
free( p_line->pi_color );
free( p_line->pi_underline_offset );
free( p_line->pi_underline_thickness );
free( p_line );
......@@ -1635,14 +1615,12 @@ static line_desc_t *NewLine( int i_count )
p_line->pp_glyphs = calloc( i_count + 1, sizeof(*p_line->pp_glyphs) );
p_line->p_glyph_pos = calloc( i_count + 1, sizeof(*p_line->p_glyph_pos) );
p_line->p_fg_rgb = calloc( i_count + 1, sizeof(*p_line->p_fg_rgb) );
p_line->p_bg_rgb = calloc( i_count + 1, sizeof(*p_line->p_bg_rgb) );
p_line->p_fg_bg_ratio = calloc( i_count + 1, sizeof(*p_line->p_fg_bg_ratio) );
p_line->pi_color = calloc( i_count + 1, sizeof(*p_line->pi_color) );
p_line->pi_underline_offset = calloc( i_count + 1, sizeof(*p_line->pi_underline_offset) );
p_line->pi_underline_thickness = calloc( i_count + 1, sizeof(*p_line->pi_underline_thickness) );
if( !p_line->pp_glyphs || !p_line->p_glyph_pos ||
!p_line->p_fg_rgb || !p_line->p_bg_rgb || !p_line->p_fg_bg_ratio ||
!p_line->pi_color ||
!p_line->pi_underline_offset || !p_line->pi_underline_thickness )
{
FreeLine( p_line );
......@@ -1654,7 +1632,8 @@ static line_desc_t *NewLine( int i_count )
static int RenderTag( filter_t *p_filter, FT_Face p_face,
const text_style_t *p_style,
line_desc_t *p_line, uint32_t *psz_unicode,
line_desc_t *p_line,
uint32_t *psz_unicode, uint8_t *pi_karaoke_bar,
int *pi_pen_x, int i_pen_y, int *pi_start,
FT_Vector *p_result )
{
......@@ -1667,6 +1646,7 @@ static int RenderTag( filter_t *p_filter, FT_Face p_face,
int i_pen_x_start = *pi_pen_x;
uint32_t *psz_unicode_start = psz_unicode;
uint8_t *pi_karaoke_bar_start = pi_karaoke_bar;
line.xMin = line.xMax = line.yMin = line.yMax = 0;
......@@ -1696,6 +1676,8 @@ static int RenderTag( filter_t *p_filter, FT_Face p_face,
int i_error;
int i_glyph_index = FT_Get_Char_Index( p_face, *psz_unicode++ );
int i_karaoke_bar = pi_karaoke_bar ? *pi_karaoke_bar++ : 0;
if( FT_HAS_KERNING( p_face ) && i_glyph_index
&& i_previous )
{
......@@ -1769,9 +1751,8 @@ static int RenderTag( filter_t *p_filter, FT_Face p_face,
}
p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
p_line->p_fg_rgb[ i ] = p_style->i_font_color;
p_line->p_bg_rgb[ i ] = p_style->i_karaoke_background_color;
p_line->p_fg_bg_ratio[ i ] = 0x00;
p_line->pi_color[ i ] = i_karaoke_bar == 0 ? p_style->i_font_color
: p_style->i_karaoke_background_color;
line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax -
glyph_size.xMin + ((FT_BitmapGlyph)tmp_glyph)->left;
......@@ -1784,6 +1765,8 @@ static int RenderTag( filter_t *p_filter, FT_Face p_face,
while( psz_unicode > psz_unicode_start && *psz_unicode != ' ' )
{
psz_unicode--;
if( pi_karaoke_bar )
pi_karaoke_bar--;
}
if( psz_unicode == psz_unicode_start )
{
......@@ -1810,6 +1793,7 @@ static int RenderTag( filter_t *p_filter, FT_Face p_face,
*psz_unicode = '\n';
}
psz_unicode = psz_unicode_start;
pi_karaoke_bar = pi_karaoke_bar_start;
*pi_pen_x = i_pen_x_start;
i_previous = 0;
......@@ -1960,22 +1944,11 @@ static int ProcessLines( filter_t *p_filter,
uint32_t *p_fribidi_string = NULL;
text_style_t **pp_fribidi_styles = NULL;
int *p_new_positions = NULL;
uint8_t *pi_karaoke_bar = NULL;
int i_prev;
if( pi_k_dates )
{
pi_karaoke_bar = malloc( i_len * sizeof(*pi_karaoke_bar));
/* If we can't allocate sufficient memory for karaoke, continue anyway -
* we just won't be able to display the progress bar; at least we'll
* get the text.
*/
}
#if defined(HAVE_FRIBIDI)
{
int *p_old_positions;
int8_t *p_levels;
int start_pos, pos = 0;
pp_fribidi_styles = calloc( i_len, sizeof(*pp_fribidi_styles) );
......@@ -1983,20 +1956,16 @@ static int ProcessLines( filter_t *p_filter,
p_fribidi_string = malloc( (i_len + 1) * sizeof(*p_fribidi_string) );
p_old_positions = malloc( (i_len + 1) * sizeof(*p_old_positions) );
p_new_positions = malloc( (i_len + 1) * sizeof(*p_new_positions) );
p_levels = malloc( (i_len + 1) * sizeof(*p_levels) );
if( ! pp_fribidi_styles ||
! p_fribidi_string ||
! p_old_positions ||
! p_new_positions ||
! p_levels )
! p_new_positions )
{
free( p_levels );
free( p_old_positions );
free( p_new_positions );
free( p_fribidi_string );
free( pp_fribidi_styles );
free( pi_karaoke_bar );
return VLC_ENOMEM;
}
......@@ -2009,7 +1978,6 @@ static int ProcessLines( filter_t *p_filter,
p_fribidi_string[pos] = psz_text[pos];
pp_fribidi_styles[pos] = pp_styles[pos];
p_new_positions[pos] = pos;
p_levels[pos] = 0;
++pos;
}
start_pos = pos;
......@@ -2030,7 +1998,7 @@ static int ProcessLines( filter_t *p_filter,
(FriBidiChar*)p_fribidi_string + start_pos,
p_new_positions + start_pos,
p_old_positions,
p_levels + start_pos );
NULL );
for( int j = start_pos; j < pos; j++ )
{
pp_fribidi_styles[ j ] = pp_styles[ start_pos + p_old_positions[j - start_pos] ];
......@@ -2040,23 +2008,24 @@ static int ProcessLines( filter_t *p_filter,
}
p_fribidi_string[ i_len ] = 0;
free( p_old_positions );
free( p_levels );
pp_styles = pp_fribidi_styles;
psz_text = p_fribidi_string;
}
#endif
/* Work out the karaoke */
if( pi_karaoke_bar )
uint8_t *pi_karaoke_bar = NULL;
if( pi_k_dates )
{
int64_t i_elapsed = var_GetTime( p_filter, "spu-elapsed" ) / 1000;
for( int i = 0; i < i_len; i++ )
pi_karaoke_bar = malloc( i_len * sizeof(*pi_karaoke_bar));
if( pi_karaoke_bar )
{
unsigned i_bar = p_new_positions ? p_new_positions[i] : i;
if( pi_k_dates[i] < i_elapsed )
pi_karaoke_bar[i_bar] = 0x7f;
else
pi_karaoke_bar[i_bar] = 0x00;
int64_t i_elapsed = var_GetTime( p_filter, "spu-elapsed" ) / 1000;
for( int i = 0; i < i_len; i++ )
{
unsigned i_bar = p_new_positions ? p_new_positions[i] : i;
pi_karaoke_bar[i_bar] = pi_k_dates[i] >= i_elapsed;
}
}
}
free( p_new_positions );
......@@ -2131,7 +2100,8 @@ static int ProcessLines( filter_t *p_filter,
if( RenderTag( p_filter, p_face ? p_face : p_sys->p_face,
p_style,
p_line, psz_unicode, &i_pen_x, i_pen_y, &i_posn,
p_line, psz_unicode, pi_karaoke_bar ? &pi_karaoke_bar[i_prev] : NULL,
&i_pen_x, i_pen_y, &i_posn,
&tmp_result ) != VLC_SUCCESS )
{
if( p_face ) FT_Done_Face( p_face );
......@@ -2168,6 +2138,7 @@ static int ProcessLines( filter_t *p_filter,
}
free( pp_fribidi_styles );
free( p_fribidi_string );
free( pi_karaoke_bar );
if( p_line )
{
......@@ -2175,46 +2146,6 @@ static int ProcessLines( filter_t *p_filter,
p_result->y += tmp_result.y;
}
if( pi_karaoke_bar )
{
int i = 0;
for( p_line = *pp_lines; p_line; p_line=p_line->p_next )
{
for( uint32_t k = 0; p_line->pp_glyphs[ k ]; k++, i++ )
{
if( (pi_karaoke_bar[ i ] & 0x7f) == 0x7f)
{
/* do nothing */
}
else if( (pi_karaoke_bar[ i ] & 0x7f) == 0x00)
{
/* 100% BG colour will render faster if we
* instead make it 100% FG colour, so leave
* the ratio alone and copy the value across
*/
p_line->p_fg_rgb[ k ] = p_line->p_bg_rgb[ k ];
}
else
{
if( pi_karaoke_bar[ i ] & 0x80 )
{
/* Swap Left and Right sides over for Right aligned
* language text (eg. Arabic, Hebrew)
*/
uint32_t i_tmp = p_line->p_fg_rgb[ k ];
p_line->p_fg_rgb[ k ] = p_line->p_bg_rgb[ k ];
p_line->p_bg_rgb[ k ] = i_tmp;
}
p_line->p_fg_bg_ratio[ k ] = (pi_karaoke_bar[ i ] & 0x7f);
}
}
/* Jump over the '\n' at the line-end */
i++;
}
free( pi_karaoke_bar );
}
return VLC_SUCCESS;
}
......
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