freetype.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:89k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * freetype.c : Put text on the video, using freetype2
- *****************************************************************************
- * Copyright (C) 2002 - 2007 the VideoLAN team
- * $Id: 99b7a80304afd53d0038e167aa0edc46dd46fc35 $
- *
- * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
- * Gildas Bazin <gbazin@videolan.org>
- * Bernie Purcell <bitmap@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_osd.h>
- #include <vlc_filter.h>
- #include <vlc_stream.h>
- #include <vlc_xml.h>
- #include <vlc_input.h>
- #include <vlc_strings.h>
- #include <math.h>
- #include <errno.h>
- #include <ft2build.h>
- #include FT_FREETYPE_H
- #include FT_GLYPH_H
- #define FT_FLOOR(X) ((X & -64) >> 6)
- #define FT_CEIL(X) (((X + 63) & -64) >> 6)
- #define FT_MulFix(v, s) (((v)*(s))>>16)
- #ifdef __APPLE__
- #import <Carbon/Carbon.h>
- #endif
- #ifdef __APPLE__
- #define DEFAULT_FONT "/Library/Fonts/Arial Black.ttf"
- #define FC_DEFAULT_FONT "Arial Black"
- #elif defined( SYS_BEOS )
- #define DEFAULT_FONT "/boot/beos/etc/fonts/ttfonts/Swiss721.ttf"
- #define FC_DEFAULT_FONT "Swiss"
- #elif defined( WIN32 )
- #define DEFAULT_FONT "" /* Default font found at run-time */
- #define FC_DEFAULT_FONT "Arial"
- #else
- #define DEFAULT_FONT "/usr/share/fonts/truetype/freefont/FreeSerifBold.ttf"
- #define FC_DEFAULT_FONT "Serif Bold"
- #endif
- #if defined(HAVE_FRIBIDI)
- #include <fribidi/fribidi.h>
- #endif
- #ifdef HAVE_FONTCONFIG
- #include <fontconfig/fontconfig.h>
- #endif
- #include <assert.h>
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Create ( vlc_object_t * );
- static void Destroy( vlc_object_t * );
- #define FONT_TEXT N_("Font")
- #define FONT_LONGTEXT N_("Filename for the font you want to use")
- #define FONTSIZE_TEXT N_("Font size in pixels")
- #define FONTSIZE_LONGTEXT N_("This is the default size of the fonts "
- "that will be rendered on the video. "
- "If set to something different than 0 this option will override the "
- "relative font size." )
- #define OPACITY_TEXT N_("Opacity")
- #define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of the "
- "text that will be rendered on the video. 0 = transparent, "
- "255 = totally opaque. " )
- #define COLOR_TEXT N_("Text default color")
- #define COLOR_LONGTEXT N_("The color of the text that will be rendered on "
- "the video. This must be an hexadecimal (like HTML colors). The first two "
- "chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"
- " #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
- #define FONTSIZER_TEXT N_("Relative font size")
- #define FONTSIZER_LONGTEXT N_("This is the relative default size of the "
- "fonts that will be rendered on the video. If absolute font size is set, "
- "relative size will be overriden." )
- static const int pi_sizes[] = { 20, 18, 16, 12, 6 };
- static const char *const ppsz_sizes_text[] = {
- N_("Smaller"), N_("Small"), N_("Normal"), N_("Large"), N_("Larger") };
- #define YUVP_TEXT N_("Use YUVP renderer")
- #define YUVP_LONGTEXT N_("This renders the font using "paletized YUV". "
- "This option is only needed if you want to encode into DVB subtitles" )
- #define EFFECT_TEXT N_("Font Effect")
- #define EFFECT_LONGTEXT N_("It is possible to apply effects to the rendered "
- "text to improve its readability." )
- #define EFFECT_BACKGROUND 1
- #define EFFECT_OUTLINE 2
- #define EFFECT_OUTLINE_FAT 3
- static int const pi_effects[] = { 1, 2, 3 };
- static const char *const ppsz_effects_text[] = {
- N_("Background"),N_("Outline"), N_("Fat Outline") };
- static const int pi_color_values[] = {
- 0x00000000, 0x00808080, 0x00C0C0C0, 0x00FFFFFF, 0x00800000,
- 0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00808000, 0x00008000, 0x00008080,
- 0x0000FF00, 0x00800080, 0x00000080, 0x000000FF, 0x0000FFFF };
- static const char *const ppsz_color_descriptions[] = {
- N_("Black"), N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"),
- N_("Red"), N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"), N_("Teal"),
- N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"), N_("Aqua") };
- vlc_module_begin ()
- set_shortname( N_("Text renderer"))
- set_description( N_("Freetype2 font renderer") )
- set_category( CAT_VIDEO )
- set_subcategory( SUBCAT_VIDEO_SUBPIC )
- add_file( "freetype-font", DEFAULT_FONT, NULL, FONT_TEXT, FONT_LONGTEXT,
- false )
- add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
- FONTSIZE_LONGTEXT, true )
- /* opacity valid on 0..255, with default 255 = fully opaque */
- add_integer_with_range( "freetype-opacity", 255, 0, 255, NULL,
- OPACITY_TEXT, OPACITY_LONGTEXT, true )
- /* hook to the color values list, with default 0x00ffffff = white */
- add_integer( "freetype-color", 0x00FFFFFF, NULL, COLOR_TEXT,
- COLOR_LONGTEXT, false )
- change_integer_list( pi_color_values, ppsz_color_descriptions, NULL )
- add_integer( "freetype-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
- FONTSIZER_LONGTEXT, false )
- change_integer_list( pi_sizes, ppsz_sizes_text, NULL )
- add_integer( "freetype-effect", 2, NULL, EFFECT_TEXT,
- EFFECT_LONGTEXT, false )
- change_integer_list( pi_effects, ppsz_effects_text, NULL )
- add_bool( "freetype-yuvp", 0, NULL, YUVP_TEXT,
- YUVP_LONGTEXT, true )
- set_capability( "text renderer", 100 )
- add_shortcut( "text" )
- set_callbacks( Create, Destroy )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- /* The RenderText call maps to pf_render_string, defined in vlc_filter.h */
- static int RenderText( filter_t *, subpicture_region_t *,
- subpicture_region_t * );
- #ifdef HAVE_FONTCONFIG
- static int RenderHtml( filter_t *, subpicture_region_t *,
- subpicture_region_t * );
- static char *FontConfig_Select( FcConfig *, const char *,
- bool, bool, int * );
- #endif
- static int LoadFontsFromAttachments( filter_t *p_filter );
- static int GetFontSize( filter_t *p_filter );
- static int SetFontSize( filter_t *, int );
- static void YUVFromRGB( uint32_t i_argb,
- uint8_t *pi_y, uint8_t *pi_u, uint8_t *pi_v );
- typedef struct line_desc_t line_desc_t;
- struct line_desc_t
- {
- /** NULL-terminated list of glyphs making the string */
- FT_BitmapGlyph *pp_glyphs;
- /** list of relative positions for the glyphs */
- FT_Vector *p_glyph_pos;
- /** list of RGB information for styled text
- * -- if the rendering mode supports it (RenderYUVA) and
- * b_new_color_mode is set, then it becomes possible to
- * have multicoloured text within the subtitles. */
- uint32_t *p_fg_rgb;
- uint32_t *p_bg_rgb;
- uint8_t *p_fg_bg_ratio; /* 0x00=100% FG --> 0x7F=100% BG */
- bool b_new_color_mode;
- /** underline information -- only supplied if text should be underlined */
- uint16_t *pi_underline_offset;
- uint16_t *pi_underline_thickness;
- int i_height;
- int i_width;
- int i_red, i_green, i_blue;
- int i_alpha;
- line_desc_t *p_next;
- };
- static line_desc_t *NewLine( int );
- typedef struct
- {
- int i_font_size;
- uint32_t i_font_color; /* ARGB */
- uint32_t i_karaoke_bg_color; /* ARGB */
- bool b_italic;
- bool b_bold;
- bool b_underline;
- char *psz_fontname;
- } ft_style_t;
- static int Render( filter_t *, subpicture_region_t *, line_desc_t *, int, int);
- static void FreeLines( line_desc_t * );
- static void FreeLine( line_desc_t * );
- #ifdef HAVE_FONTCONFIG
- static vlc_object_t *FontBuilderAttach( filter_t *p_filter );
- static void FontBuilderDetach( filter_t *p_filter, vlc_object_t *p_fontbuilder );
- static void* FontBuilderThread( vlc_object_t *p_this);
- static void FontBuilderDestructor( vlc_object_t *p_this );
- static void FontBuilderGetFcConfig( filter_t *p_filter, vlc_object_t *p_fontbuilder );
- static int FontBuilderDone( vlc_object_t*, const char *, vlc_value_t, vlc_value_t,
- void* );
- #endif
- /*****************************************************************************
- * filter_sys_t: freetype local data
- *****************************************************************************
- * This structure is part of the video output thread descriptor.
- * It describes the freetype specific properties of an output thread.
- *****************************************************************************/
- struct filter_sys_t
- {
- FT_Library p_library; /* handle to library */
- FT_Face p_face; /* handle to face object */
- bool i_use_kerning;
- uint8_t i_font_opacity;
- int i_font_color;
- int i_font_size;
- int i_effect;
- int i_default_font_size;
- int i_display_height;
- #ifdef HAVE_FONTCONFIG
- bool b_fontconfig_ok;
- FcConfig *p_fontconfig;
- xml_t *p_xml;
- #endif
- input_attachment_t **pp_font_attachments;
- int i_font_attachments;
- vlc_object_t *p_fontbuilder;
- };
- #define UCHAR uint32_t
- #define TR_DEFAULT_FONT FC_DEFAULT_FONT
- #define TR_FONT_STYLE_PTR ft_style_t *
- #include "text_renderer.h"
- /*****************************************************************************
- * Create: allocates osd-text video thread output method
- *****************************************************************************
- * This function allocates and initializes a Clone vout method.
- *****************************************************************************/
- static int Create( vlc_object_t *p_this )
- {
- filter_t *p_filter = (filter_t *)p_this;
- filter_sys_t *p_sys;
- char *psz_fontfile = NULL;
- int i_error;
- vlc_value_t val;
- /* Allocate structure */
- p_filter->p_sys = p_sys = malloc( sizeof( filter_sys_t ) );
- if( !p_sys )
- return VLC_ENOMEM;
- #ifdef HAVE_FONTCONFIG
- p_sys->p_xml = NULL;
- #endif
- p_sys->p_face = 0;
- p_sys->p_library = 0;
- p_sys->i_font_size = 0;
- p_sys->i_display_height = 0;
- var_Create( p_filter, "freetype-font",
- VLC_VAR_STRING | VLC_VAR_DOINHERIT );
- var_Create( p_filter, "freetype-fontsize",
- VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- var_Create( p_filter, "freetype-rel-fontsize",
- VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- var_Create( p_filter, "freetype-opacity",
- VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- var_Create( p_filter, "freetype-effect",
- VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- var_Get( p_filter, "freetype-opacity", &val );
- p_sys->i_font_opacity = __MAX( __MIN( val.i_int, 255 ), 0 );
- var_Create( p_filter, "freetype-color",
- VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- var_Get( p_filter, "freetype-color", &val );
- p_sys->i_font_color = __MAX( __MIN( val.i_int, 0xFFFFFF ), 0 );
- p_sys->i_effect = var_GetInteger( p_filter, "freetype-effect" );
- /* Look what method was requested */
- var_Get( p_filter, "freetype-font", &val );
- psz_fontfile = val.psz_string;
- if( !psz_fontfile || !*psz_fontfile )
- {
- free( psz_fontfile );
- psz_fontfile = (char *)malloc( PATH_MAX + 1 );
- if( !psz_fontfile )
- goto error;
- #ifdef WIN32
- GetWindowsDirectory( psz_fontfile, PATH_MAX + 1 );
- strcat( psz_fontfile, "\fonts\arial.ttf" );
- #else
- msg_Err( p_filter, "user didn't specify a font" );
- goto error;
- #endif
- }
- i_error = FT_Init_FreeType( &p_sys->p_library );
- if( i_error )
- {
- msg_Err( p_filter, "couldn't initialize freetype" );
- goto error;
- }
- i_error = FT_New_Face( p_sys->p_library, psz_fontfile ? psz_fontfile : "",
- 0, &p_sys->p_face );
- if( i_error == FT_Err_Unknown_File_Format )
- {
- msg_Err( p_filter, "file %s have unknown format", psz_fontfile );
- goto error;
- }
- else if( i_error )
- {
- msg_Err( p_filter, "failed to load font file %s", psz_fontfile );
- goto error;
- }
- i_error = FT_Select_Charmap( p_sys->p_face, ft_encoding_unicode );
- if( i_error )
- {
- msg_Err( p_filter, "font has no unicode translation table" );
- goto error;
- }
- #ifdef HAVE_FONTCONFIG
- p_sys->b_fontconfig_ok = false;
- p_sys->p_fontconfig = NULL;
- p_sys->p_fontbuilder = FontBuilderAttach( p_filter );
- #endif
- p_sys->i_use_kerning = FT_HAS_KERNING( p_sys->p_face );
- var_Get( p_filter, "freetype-fontsize", &val );
- p_sys->i_default_font_size = val.i_int;
- if( SetFontSize( p_filter, 0 ) != VLC_SUCCESS ) goto error;
- free( psz_fontfile );
- p_sys->pp_font_attachments = NULL;
- p_sys->i_font_attachments = 0;
- p_filter->pf_render_text = RenderText;
- #ifdef HAVE_FONTCONFIG
- p_filter->pf_render_html = RenderHtml;
- #else
- p_filter->pf_render_html = NULL;
- #endif
- LoadFontsFromAttachments( p_filter );
- return VLC_SUCCESS;
- error:
- if( p_sys->p_face ) FT_Done_Face( p_sys->p_face );
- if( p_sys->p_library ) FT_Done_FreeType( p_sys->p_library );
- free( psz_fontfile );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /*****************************************************************************
- * Destroy: destroy Clone video thread output method
- *****************************************************************************
- * Clean up all data and library connections
- *****************************************************************************/
- 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;
- if( p_sys->pp_font_attachments )
- {
- int k;
- for( k = 0; k < p_sys->i_font_attachments; k++ )
- vlc_input_attachment_Delete( p_sys->pp_font_attachments[k] );
- free( p_sys->pp_font_attachments );
- }
- #ifdef HAVE_FONTCONFIG
- FontBuilderDetach( p_filter, p_sys->p_fontbuilder );
- if( p_sys->p_xml ) xml_Delete( p_sys->p_xml );
- #endif
- /* FcFini asserts calling the subfunction FcCacheFini()
- * even if no other library functions have been made since FcInit(),
- * so don't call it. */
- FT_Done_Face( p_sys->p_face );
- FT_Done_FreeType( p_sys->p_library );
- free( p_sys );
- }
- #ifdef HAVE_FONTCONFIG
- static vlc_mutex_t fb_lock = VLC_STATIC_MUTEX;
- static vlc_object_t *FontBuilderAttach( filter_t *p_filter )
- {
- /* Check for an existing Fontbuilder thread */
- vlc_mutex_lock( &fb_lock );
- vlc_object_t *p_fontbuilder =
- vlc_object_find_name( p_filter->p_libvlc,
- "fontlist builder", FIND_CHILD );
- if( !p_fontbuilder )
- {
- /* Create the FontBuilderThread thread as a child of a top-level
- * object, so that it can survive the destruction of the
- * freetype object - the fontlist only needs to be built once,
- * and calling the fontbuild a second time while the first is
- * still in progress can cause thread instabilities.
- *
- * XXX The fontbuilder will be destroy as soon as it is unused.
- */
- p_fontbuilder = vlc_object_create( p_filter->p_libvlc,
- sizeof(vlc_object_t) );
- if( p_fontbuilder )
- {
- p_fontbuilder->psz_object_name = strdup( "fontlist builder" );
- p_fontbuilder->p_private = NULL;
- vlc_object_set_destructor( p_fontbuilder, FontBuilderDestructor );
- vlc_object_attach( p_fontbuilder, p_filter->p_libvlc );
- var_Create( p_fontbuilder, "build-done", VLC_VAR_BOOL );
- var_SetBool( p_fontbuilder, "build-done", false );
- var_Create( p_fontbuilder, "build-joined", VLC_VAR_BOOL );
- var_SetBool( p_fontbuilder, "build-joined", false );
- if( vlc_thread_create( p_fontbuilder,
- "fontlist builder",
- FontBuilderThread,
- VLC_THREAD_PRIORITY_LOW ) )
- {
- msg_Warn( p_filter, "fontconfig database builder thread can't "
- "be launched. Font styling support will be limited." );
- }
- }
- }
- if( p_fontbuilder )
- {
- var_AddCallback( p_fontbuilder, "build-done", FontBuilderDone, p_filter );
- FontBuilderGetFcConfig( p_filter, p_fontbuilder );
- }
- vlc_mutex_unlock( &fb_lock );
- return p_fontbuilder;
- }
- static void FontBuilderDetach( filter_t *p_filter, vlc_object_t *p_fontbuilder )
- {
- vlc_mutex_lock( &fb_lock );
- if( p_fontbuilder )
- {
- var_DelCallback( p_fontbuilder, "build-done", FontBuilderDone, p_filter );
- /* We wait for the thread on the first FontBuilderDetach */
- if( !var_GetBool( p_fontbuilder, "build-joined" ) )
- {
- var_SetBool( p_fontbuilder, "build-joined", true );
- vlc_mutex_unlock( &fb_lock );
- /* We need to unlock otherwise we may not join (the thread waiting
- * for the lock). It is safe to unlock as no one else will try a
- * join and we have a reference on the object) */
- vlc_thread_join( p_fontbuilder );
- vlc_mutex_lock( &fb_lock );
- }
- vlc_object_release( p_fontbuilder );
- }
- vlc_mutex_unlock( &fb_lock );
- }
- static void* FontBuilderThread( vlc_object_t *p_this )
- {
- FcConfig *p_fontconfig = FcInitLoadConfig();
- if( p_fontconfig )
- {
- mtime_t t1, t2;
- int canc = vlc_savecancel ();
- //msg_Dbg( p_this, "Building font database..." );
- msg_Dbg( p_this, "Building font database..." );
- t1 = mdate();
- if(! FcConfigBuildFonts( p_fontconfig ))
- {
- /* Don't destroy the fontconfig object - we won't be able to do
- * italics or bold or change the font face, but we will still
- * be able to do underline and change the font size.
- */
- msg_Err( p_this, "fontconfig database can't be built. "
- "Font styling won't be available" );
- }
- t2 = mdate();
- msg_Dbg( p_this, "Finished building font database." );
- msg_Dbg( p_this, "Took %ld microseconds", (long)((t2 - t1)) );
- vlc_mutex_lock( &fb_lock );
- p_this->p_private = p_fontconfig;
- vlc_mutex_unlock( &fb_lock );
- var_SetBool( p_this, "build-done", true );
- vlc_restorecancel (canc);
- }
- return NULL;
- }
- static void FontBuilderGetFcConfig( filter_t *p_filter, vlc_object_t *p_fontbuilder )
- {
- filter_sys_t *p_sys = p_filter->p_sys;
- p_sys->p_fontconfig = p_fontbuilder->p_private;
- p_sys->b_fontconfig_ok = p_fontbuilder->p_private != NULL;
- }
- static void FontBuilderDestructor( vlc_object_t *p_this )
- {
- FcConfig *p_fontconfig = p_this->p_private;
- if( p_fontconfig )
- FcConfigDestroy( p_fontconfig );
- }
- static int FontBuilderDone( vlc_object_t *p_this, const char *psz_var,
- vlc_value_t oldval, vlc_value_t newval, void *param )
- {
- filter_t *p_filter = param;
- if( newval.b_bool )
- {
- vlc_mutex_lock( &fb_lock );
- FontBuilderGetFcConfig( p_filter, p_this );
- vlc_mutex_unlock( &fb_lock );
- }
- VLC_UNUSED(psz_var);
- VLC_UNUSED(oldval);
- return VLC_SUCCESS;
- }
- #endif
- /*****************************************************************************
- * Make any TTF/OTF fonts present in the attachments of the media file
- * and store them for later use by the FreeType Engine
- *****************************************************************************/
- static int LoadFontsFromAttachments( filter_t *p_filter )
- {
- filter_sys_t *p_sys = p_filter->p_sys;
- input_thread_t *p_input;
- input_attachment_t **pp_attachments;
- int i_attachments_cnt;
- int k;
- int rv = VLC_SUCCESS;
- p_input = (input_thread_t *)vlc_object_find( p_filter, VLC_OBJECT_INPUT, FIND_PARENT );
- if( ! p_input )
- return VLC_EGENERIC;
- if( VLC_SUCCESS != input_Control( p_input, INPUT_GET_ATTACHMENTS, &pp_attachments, &i_attachments_cnt ))
- {
- vlc_object_release(p_input);
- return VLC_EGENERIC;
- }
- p_sys->i_font_attachments = 0;
- p_sys->pp_font_attachments = malloc( i_attachments_cnt * sizeof( input_attachment_t * ));
- if(! p_sys->pp_font_attachments )
- rv = VLC_ENOMEM;
- for( k = 0; k < i_attachments_cnt; k++ )
- {
- input_attachment_t *p_attach = pp_attachments[k];
- if( p_sys->pp_font_attachments )
- {
- if(( !strcmp( p_attach->psz_mime, "application/x-truetype-font" ) || // TTF
- !strcmp( p_attach->psz_mime, "application/x-font-otf" ) ) && // OTF
- ( p_attach->i_data > 0 ) &&
- ( p_attach->p_data != NULL ) )
- {
- p_sys->pp_font_attachments[ p_sys->i_font_attachments++ ] = p_attach;
- }
- else
- {
- vlc_input_attachment_Delete( p_attach );
- }
- }
- else
- {
- vlc_input_attachment_Delete( p_attach );
- }
- }
- free( pp_attachments );
- vlc_object_release(p_input);
- return rv;
- }
- /*****************************************************************************
- * Render: place string in picture
- *****************************************************************************
- * This function merges the previously rendered freetype glyphs into a picture
- *****************************************************************************/
- static int Render( filter_t *p_filter, subpicture_region_t *p_region,
- line_desc_t *p_line, int i_width, int i_height )
- {
- static const uint8_t pi_gamma[16] =
- {0x00, 0x52, 0x84, 0x96, 0xb8, 0xca, 0xdc, 0xee, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
- uint8_t *p_dst;
- video_format_t fmt;
- int i, x, y, i_pitch;
- uint8_t i_y; /* YUV values, derived from incoming RGB */
- int8_t i_u, i_v;
- /* Create a new subpicture region */
- memset( &fmt, 0, sizeof(video_format_t) );
- fmt.i_chroma = VLC_FOURCC('Y','U','V','P');
- fmt.i_aspect = 0;
- fmt.i_width = fmt.i_visible_width = i_width + 4;
- fmt.i_height = fmt.i_visible_height = i_height + 4;
- if( p_region->fmt.i_visible_width > 0 )
- fmt.i_visible_width = p_region->fmt.i_visible_width;
- if( p_region->fmt.i_visible_height > 0 )
- fmt.i_visible_height = p_region->fmt.i_visible_height;
- fmt.i_x_offset = fmt.i_y_offset = 0;
- assert( !p_region->p_picture );
- p_region->p_picture = picture_New( fmt.i_chroma, fmt.i_width, fmt.i_height, fmt.i_aspect );
- if( !p_region->p_picture )
- return VLC_EGENERIC;
- fmt.p_palette = p_region->fmt.p_palette ? p_region->fmt.p_palette : malloc(sizeof(*fmt.p_palette));
- p_region->fmt = fmt;
- /* Calculate text color components */
- i_y = (uint8_t)(( 66 * p_line->i_red + 129 * p_line->i_green +
- 25 * p_line->i_blue + 128) >> 8) + 16;
- i_u = (int8_t)(( -38 * p_line->i_red - 74 * p_line->i_green +
- 112 * p_line->i_blue + 128) >> 8) + 128;
- i_v = (int8_t)(( 112 * p_line->i_red - 94 * p_line->i_green -
- 18 * p_line->i_blue + 128) >> 8) + 128;
- /* Build palette */
- fmt.p_palette->i_entries = 16;
- for( i = 0; i < 8; i++ )
- {
- fmt.p_palette->palette[i][0] = 0;
- fmt.p_palette->palette[i][1] = 0x80;
- fmt.p_palette->palette[i][2] = 0x80;
- fmt.p_palette->palette[i][3] = pi_gamma[i];
- fmt.p_palette->palette[i][3] =
- (int)fmt.p_palette->palette[i][3] * (255 - p_line->i_alpha) / 255;
- }
- for( i = 8; i < fmt.p_palette->i_entries; i++ )
- {
- fmt.p_palette->palette[i][0] = i * 16 * i_y / 256;
- fmt.p_palette->palette[i][1] = i_u;
- fmt.p_palette->palette[i][2] = i_v;
- fmt.p_palette->palette[i][3] = pi_gamma[i];
- fmt.p_palette->palette[i][3] =
- (int)fmt.p_palette->palette[i][3] * (255 - p_line->i_alpha) / 255;
- }
- p_dst = p_region->p_picture->Y_PIXELS;
- i_pitch = p_region->p_picture->Y_PITCH;
- /* Initialize the region pixels */
- memset( p_dst, 0, i_pitch * p_region->fmt.i_height );
- for( ; p_line != NULL; p_line = p_line->p_next )
- {
- int i_glyph_tmax = 0;
- int i_bitmap_offset, i_offset, i_align_offset = 0;
- for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
- {
- FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
- i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
- }
- if( p_line->i_width < i_width )
- {
- if( (p_region->i_align & 0x3) == SUBPICTURE_ALIGN_RIGHT )
- {
- i_align_offset = i_width - p_line->i_width;
- }
- else if( (p_region->i_align & 0x3) != SUBPICTURE_ALIGN_LEFT )
- {
- i_align_offset = ( i_width - p_line->i_width ) / 2;
- }
- }
- for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
- {
- FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
- i_offset = ( p_line->p_glyph_pos[ i ].y +
- i_glyph_tmax - p_glyph->top + 2 ) *
- i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 2 +
- i_align_offset;
- for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
- {
- for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
- {
- if( p_glyph->bitmap.buffer[i_bitmap_offset] )
- p_dst[i_offset+x] =
- ((int)p_glyph->bitmap.buffer[i_bitmap_offset] + 8)/16;
- }
- i_offset += i_pitch;
- }
- }
- }
- /* Outlining (find something better than nearest neighbour filtering ?) */
- if( 1 )
- {
- uint8_t *p_dst = p_region->p_picture->Y_PIXELS;
- uint8_t *p_top = p_dst; /* Use 1st line as a cache */
- uint8_t left, current;
- for( y = 1; y < (int)fmt.i_height - 1; y++ )
- {
- if( y > 1 ) memcpy( p_top, p_dst, fmt.i_width );
- p_dst += p_region->p_picture->Y_PITCH;
- left = 0;
- for( x = 1; x < (int)fmt.i_width - 1; x++ )
- {
- current = p_dst[x];
- p_dst[x] = ( 8 * (int)p_dst[x] + left + p_dst[x+1] + p_top[x -1]+ p_top[x] + p_top[x+1] +
- p_dst[x -1 + p_region->p_picture->Y_PITCH ] + p_dst[x + p_region->p_picture->Y_PITCH] + p_dst[x + 1 + p_region->p_picture->Y_PITCH]) / 16;
- left = current;
- }
- }
- memset( p_top, 0, fmt.i_width );
- }
- return VLC_SUCCESS;
- }
- static void UnderlineGlyphYUVA( int i_line_thickness, int i_line_offset, bool b_ul_next_char,
- FT_BitmapGlyph p_this_glyph, FT_Vector *p_this_glyph_pos,
- FT_BitmapGlyph p_next_glyph, FT_Vector *p_next_glyph_pos,
- int i_glyph_tmax, int i_align_offset,
- uint8_t i_y, uint8_t i_u, uint8_t i_v,
- subpicture_region_t *p_region)
- {
- int y, x, z;
- int i_pitch;
- uint8_t *p_dst_y,*p_dst_u,*p_dst_v,*p_dst_a;
- p_dst_y = p_region->p_picture->Y_PIXELS;
- p_dst_u = p_region->p_picture->U_PIXELS;
- p_dst_v = p_region->p_picture->V_PIXELS;
- p_dst_a = p_region->p_picture->A_PIXELS;
- i_pitch = p_region->p_picture->A_PITCH;
- int i_offset = ( p_this_glyph_pos->y + i_glyph_tmax + i_line_offset + 3 ) * i_pitch +
- p_this_glyph_pos->x + p_this_glyph->left + 3 + i_align_offset;
- for( y = 0; y < i_line_thickness; y++ )
- {
- int i_extra = p_this_glyph->bitmap.width;
- if( b_ul_next_char )
- {
- i_extra = (p_next_glyph_pos->x + p_next_glyph->left) -
- (p_this_glyph_pos->x + p_this_glyph->left);
- }
- for( x = 0; x < i_extra; x++ )
- {
- bool b_ok = true;
- /* break the underline around the tails of any glyphs which cross it */
- for( z = x - i_line_thickness;
- z < x + i_line_thickness && b_ok;
- z++ )
- {
- if( p_next_glyph && ( z >= i_extra ) )
- {
- int i_row = i_line_offset + p_next_glyph->top + y;
- if( ( p_next_glyph->bitmap.rows > i_row ) &&
- p_next_glyph->bitmap.buffer[p_next_glyph->bitmap.width * i_row + z-i_extra] )
- {
- b_ok = false;
- }
- }
- else if ((z > 0 ) && (z < p_this_glyph->bitmap.width))
- {
- int i_row = i_line_offset + p_this_glyph->top + y;
- if( ( p_this_glyph->bitmap.rows > i_row ) &&
- p_this_glyph->bitmap.buffer[p_this_glyph->bitmap.width * i_row + z] )
- {
- b_ok = false;
- }
- }
- }
- if( b_ok )
- {
- p_dst_y[i_offset+x] = (i_y * 255) >> 8;
- p_dst_u[i_offset+x] = i_u;
- p_dst_v[i_offset+x] = i_v;
- p_dst_a[i_offset+x] = 255;
- }
- }
- i_offset += i_pitch;
- }
- }
- static void DrawBlack( line_desc_t *p_line, int i_width, subpicture_region_t *p_region, int xoffset, int yoffset )
- {
- uint8_t *p_dst = p_region->p_picture->A_PIXELS;
- int i_pitch = p_region->p_picture->A_PITCH;
- int x,y;
- for( ; p_line != NULL; p_line = p_line->p_next )
- {
- int i_glyph_tmax=0, i = 0;
- int i_bitmap_offset, i_offset, i_align_offset = 0;
- for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
- {
- FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
- i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
- }
- if( p_line->i_width < i_width )
- {
- if( (p_region->i_align & 0x3) == SUBPICTURE_ALIGN_RIGHT )
- {
- i_align_offset = i_width - p_line->i_width;
- }
- else if( (p_region->i_align & 0x3) != SUBPICTURE_ALIGN_LEFT )
- {
- i_align_offset = ( i_width - p_line->i_width ) / 2;
- }
- }
- for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
- {
- FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
- i_offset = ( p_line->p_glyph_pos[ i ].y +
- i_glyph_tmax - p_glyph->top + 3 + yoffset ) *
- i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 3 +
- i_align_offset +xoffset;
- for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
- {
- for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
- {
- if( p_glyph->bitmap.buffer[i_bitmap_offset] )
- if( p_dst[i_offset+x] <
- ((int)p_glyph->bitmap.buffer[i_bitmap_offset]) )
- p_dst[i_offset+x] =
- ((int)p_glyph->bitmap.buffer[i_bitmap_offset]);
- }
- i_offset += i_pitch;
- }
- }
- }
- }
- /*****************************************************************************
- * Render: place string in picture
- *****************************************************************************
- * This function merges the previously rendered freetype glyphs into a picture
- *****************************************************************************/
- static int RenderYUVA( filter_t *p_filter, subpicture_region_t *p_region,
- line_desc_t *p_line, int i_width, int i_height )
- {
- uint8_t *p_dst_y,*p_dst_u,*p_dst_v,*p_dst_a;
- video_format_t fmt;
- int i, x, y, i_pitch, i_alpha;
- uint8_t i_y, i_u, i_v; /* YUV values, derived from incoming RGB */
- if( i_width == 0 || i_height == 0 )
- return VLC_SUCCESS;
- /* Create a new subpicture region */
- memset( &fmt, 0, sizeof(video_format_t) );
- fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
- fmt.i_aspect = 0;
- fmt.i_width = fmt.i_visible_width = i_width + 6;
- fmt.i_height = fmt.i_visible_height = i_height + 6;
- if( p_region->fmt.i_visible_width > 0 )
- fmt.i_visible_width = p_region->fmt.i_visible_width;
- if( p_region->fmt.i_visible_height > 0 )
- fmt.i_visible_height = p_region->fmt.i_visible_height;
- fmt.i_x_offset = fmt.i_y_offset = 0;
- p_region->p_picture = picture_New( fmt.i_chroma, fmt.i_width, fmt.i_height, fmt.i_aspect );
- if( !p_region->p_picture )
- return VLC_EGENERIC;
- p_region->fmt = fmt;
- /* Calculate text color components */
- YUVFromRGB( (p_line->i_red << 16) |
- (p_line->i_green << 8) |
- (p_line->i_blue ),
- &i_y, &i_u, &i_v);
- i_alpha = p_line->i_alpha;
- p_dst_y = p_region->p_picture->Y_PIXELS;
- p_dst_u = p_region->p_picture->U_PIXELS;
- p_dst_v = p_region->p_picture->V_PIXELS;
- p_dst_a = p_region->p_picture->A_PIXELS;
- i_pitch = p_region->p_picture->A_PITCH;
- /* Initialize the region pixels */
- if( p_filter->p_sys->i_effect != EFFECT_BACKGROUND )
- {
- memset( p_dst_y, 0x00, i_pitch * p_region->fmt.i_height );
- memset( p_dst_u, 0x80, i_pitch * p_region->fmt.i_height );
- memset( p_dst_v, 0x80, i_pitch * p_region->fmt.i_height );
- memset( p_dst_a, 0, i_pitch * p_region->fmt.i_height );
- }
- else
- {
- memset( p_dst_y, 0x0, i_pitch * p_region->fmt.i_height );
- memset( p_dst_u, 0x80, i_pitch * p_region->fmt.i_height );
- memset( p_dst_v, 0x80, i_pitch * p_region->fmt.i_height );
- memset( p_dst_a, 0x80, i_pitch * p_region->fmt.i_height );
- }
- if( p_filter->p_sys->i_effect == EFFECT_OUTLINE ||
- p_filter->p_sys->i_effect == EFFECT_OUTLINE_FAT )
- {
- DrawBlack( p_line, i_width, p_region, 0, 0);
- DrawBlack( p_line, i_width, p_region, -1, 0);
- DrawBlack( p_line, i_width, p_region, 0, -1);
- DrawBlack( p_line, i_width, p_region, 1, 0);
- DrawBlack( p_line, i_width, p_region, 0, 1);
- }
- if( p_filter->p_sys->i_effect == EFFECT_OUTLINE_FAT )
- {
- DrawBlack( p_line, i_width, p_region, -1, -1);
- DrawBlack( p_line, i_width, p_region, -1, 1);
- DrawBlack( p_line, i_width, p_region, 1, -1);
- DrawBlack( p_line, i_width, p_region, 1, 1);
- DrawBlack( p_line, i_width, p_region, -2, 0);
- DrawBlack( p_line, i_width, p_region, 0, -2);
- DrawBlack( p_line, i_width, p_region, 2, 0);
- DrawBlack( p_line, i_width, p_region, 0, 2);
- DrawBlack( p_line, i_width, p_region, -2, -2);
- DrawBlack( p_line, i_width, p_region, -2, 2);
- DrawBlack( p_line, i_width, p_region, 2, -2);
- DrawBlack( p_line, i_width, p_region, 2, 2);
- DrawBlack( p_line, i_width, p_region, -3, 0);
- DrawBlack( p_line, i_width, p_region, 0, -3);
- DrawBlack( p_line, i_width, p_region, 3, 0);
- DrawBlack( p_line, i_width, p_region, 0, 3);
- }
- for( ; p_line != NULL; p_line = p_line->p_next )
- {
- int i_glyph_tmax = 0;
- int i_bitmap_offset, i_offset, i_align_offset = 0;
- for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
- {
- FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
- i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
- }
- if( p_line->i_width < i_width )
- {
- if( (p_region->i_align & 0x3) == SUBPICTURE_ALIGN_RIGHT )
- {
- i_align_offset = i_width - p_line->i_width;
- }
- else if( (p_region->i_align & 0x3) != SUBPICTURE_ALIGN_LEFT )
- {
- i_align_offset = ( i_width - p_line->i_width ) / 2;
- }
- }
- for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
- {
- FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
- i_offset = ( p_line->p_glyph_pos[ i ].y +
- i_glyph_tmax - p_glyph->top + 3 ) *
- i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 3 +
- i_align_offset;
- if( p_line->b_new_color_mode )
- {
- /* Every glyph can (and in fact must) have its own color */
- YUVFromRGB( p_line->p_fg_rgb[ i ], &i_y, &i_u, &i_v );
- }
- for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
- {
- for( 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])) +
- i_y * ((int)p_glyph->bitmap.buffer[i_bitmap_offset])) >> 8;
- p_dst_u[i_offset+x] = i_u;
- p_dst_v[i_offset+x] = i_v;
- if( p_filter->p_sys->i_effect == EFFECT_BACKGROUND )
- p_dst_a[i_offset+x] = 0xff;
- }
- }
- i_offset += i_pitch;
- }
- if( p_line->pi_underline_thickness[ i ] )
- {
- UnderlineGlyphYUVA( p_line->pi_underline_thickness[ i ],
- p_line->pi_underline_offset[ i ],
- (p_line->pp_glyphs[i+1] && (p_line->pi_underline_thickness[ i + 1] > 0)),
- p_line->pp_glyphs[i], &(p_line->p_glyph_pos[i]),
- p_line->pp_glyphs[i+1], &(p_line->p_glyph_pos[i+1]),
- i_glyph_tmax, i_align_offset,
- i_y, i_u, i_v,
- p_region);
- }
- }
- }
- /* Apply the alpha setting */
- for( i = 0; i < (int)fmt.i_height * i_pitch; i++ )
- p_dst_a[i] = p_dst_a[i] * (255 - i_alpha) / 255;
- return VLC_SUCCESS;
- }
- /**
- * This function renders a text subpicture region into another one.
- * It also calculates the size needed for this string, and renders the
- * needed glyphs into memory. It is used as pf_add_string callback in
- * the vout method by this module
- */
- static int RenderText( filter_t *p_filter, subpicture_region_t *p_region_out,
- subpicture_region_t *p_region_in )
- {
- filter_sys_t *p_sys = p_filter->p_sys;
- line_desc_t *p_lines = NULL, *p_line = NULL, *p_next = NULL, *p_prev = NULL;
- int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous;
- uint32_t *psz_unicode, *psz_unicode_orig = NULL, i_char, *psz_line_start;
- int i_string_length;
- char *psz_string;
- vlc_iconv_t iconv_handle = (vlc_iconv_t)(-1);
- int i_font_color, i_font_alpha, i_font_size, i_red, i_green, i_blue;
- vlc_value_t val;
- int i_scale = 1000;
- FT_BBox line;
- FT_BBox glyph_size;
- FT_Vector result;
- FT_Glyph tmp_glyph;
- /* Sanity check */
- if( !p_region_in || !p_region_out ) return VLC_EGENERIC;
- psz_string = p_region_in->psz_text;
- if( !psz_string || !*psz_string ) return VLC_EGENERIC;
- if( VLC_SUCCESS == var_Get( p_filter, "scale", &val ))
- i_scale = val.i_int;
- if( p_region_in->p_style )
- {
- i_font_color = __MAX( __MIN( p_region_in->p_style->i_font_color, 0xFFFFFF ), 0 );
- i_font_alpha = __MAX( __MIN( p_region_in->p_style->i_font_alpha, 255 ), 0 );
- i_font_size = __MAX( __MIN( p_region_in->p_style->i_font_size, 255 ), 0 ) * i_scale / 1000;
- }
- else
- {
- i_font_color = p_sys->i_font_color;
- i_font_alpha = 255 - p_sys->i_font_opacity;
- i_font_size = p_sys->i_default_font_size * i_scale / 1000;
- }
- if( i_font_color == 0xFFFFFF ) i_font_color = p_sys->i_font_color;
- if( !i_font_alpha ) i_font_alpha = 255 - p_sys->i_font_opacity;
- SetFontSize( p_filter, i_font_size );
- i_red = ( i_font_color & 0x00FF0000 ) >> 16;
- i_green = ( i_font_color & 0x0000FF00 ) >> 8;
- i_blue = i_font_color & 0x000000FF;
- result.x = result.y = 0;
- line.xMin = line.xMax = line.yMin = line.yMax = 0;
- psz_unicode = psz_unicode_orig =
- malloc( ( strlen(psz_string) + 1 ) * sizeof(uint32_t) );
- if( psz_unicode == NULL )
- goto error;
- #if defined(WORDS_BIGENDIAN)
- iconv_handle = vlc_iconv_open( "UCS-4BE", "UTF-8" );
- #else
- iconv_handle = vlc_iconv_open( "UCS-4LE", "UTF-8" );
- #endif
- if( iconv_handle == (vlc_iconv_t)-1 )
- {
- msg_Warn( p_filter, "unable to do conversion" );
- goto error;
- }
- {
- char *p_out_buffer;
- const char *p_in_buffer = psz_string;
- size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
- i_in_bytes = strlen( psz_string );
- i_out_bytes = i_in_bytes * sizeof( uint32_t );
- i_out_bytes_left = i_out_bytes;
- p_out_buffer = (char *)psz_unicode;
- i_ret = vlc_iconv( iconv_handle, (const char**)&p_in_buffer,
- &i_in_bytes,
- &p_out_buffer, &i_out_bytes_left );
- vlc_iconv_close( iconv_handle );
- if( i_in_bytes )
- {
- msg_Warn( p_filter, "failed to convert string to unicode (%m), "
- "bytes left %u", (unsigned)i_in_bytes );
- goto error;
- }
- *(uint32_t*)p_out_buffer = 0;
- i_string_length = (i_out_bytes - i_out_bytes_left) / sizeof(uint32_t);
- }
- #if defined(HAVE_FRIBIDI)
- {
- uint32_t *p_fribidi_string;
- int32_t start_pos, pos = 0;
- p_fribidi_string = malloc( (i_string_length + 1) * sizeof(uint32_t) );
- if( !p_fribidi_string )
- goto error;
- /* Do bidi conversion line-by-line */
- while( pos < i_string_length )
- {
- while( pos < i_string_length )
- {
- i_char = psz_unicode[pos];
- if (i_char != 'r' && i_char != 'n')
- break;
- p_fribidi_string[pos] = i_char;
- ++pos;
- }
- start_pos = pos;
- while( pos < i_string_length )
- {
- i_char = psz_unicode[pos];
- if (i_char == 'r' || i_char == 'n')
- break;
- ++pos;
- }
- if (pos > start_pos)
- {
- FriBidiCharType base_dir = FRIBIDI_TYPE_LTR;
- fribidi_log2vis((FriBidiChar*)psz_unicode + start_pos,
- pos - start_pos,
- &base_dir,
- (FriBidiChar*)p_fribidi_string + start_pos,
- 0, 0, 0);
- }
- }
- free( psz_unicode_orig );
- psz_unicode = psz_unicode_orig = p_fribidi_string;
- p_fribidi_string[ i_string_length ] = 0;
- }
- #endif
- /* Calculate relative glyph positions and a bounding box for the
- * entire string */
- if( !(p_line = NewLine( strlen( psz_string ))) )
- goto error;
- p_lines = p_line;
- i_pen_x = i_pen_y = 0;
- i_previous = i = 0;
- psz_line_start = psz_unicode;
- #define face p_sys->p_face
- #define glyph face->glyph
- while( *psz_unicode )
- {
- i_char = *psz_unicode++;
- if( i_char == 'r' ) /* ignore CR chars wherever they may be */
- {
- continue;
- }
- if( i_char == 'n' )
- {
- psz_line_start = psz_unicode;
- if( !(p_next = NewLine( strlen( psz_string ))) )
- goto error;
- p_line->p_next = p_next;
- p_line->i_width = line.xMax;
- p_line->i_height = face->size->metrics.height >> 6;
- p_line->pp_glyphs[ i ] = NULL;
- p_line->i_alpha = i_font_alpha;
- p_line->i_red = i_red;
- p_line->i_green = i_green;
- p_line->i_blue = i_blue;
- p_prev = p_line;
- p_line = p_next;
- result.x = __MAX( result.x, line.xMax );
- result.y += face->size->metrics.height >> 6;
- i_pen_x = 0;
- i_previous = i = 0;
- line.xMin = line.xMax = line.yMin = line.yMax = 0;
- i_pen_y += face->size->metrics.height >> 6;
- #if 0
- msg_Dbg( p_filter, "Creating new line, i is %d", i );
- #endif
- continue;
- }
- i_glyph_index = FT_Get_Char_Index( face, i_char );
- if( p_sys->i_use_kerning && i_glyph_index
- && i_previous )
- {
- FT_Vector delta;
- FT_Get_Kerning( face, i_previous, i_glyph_index,
- ft_kerning_default, &delta );
- i_pen_x += delta.x >> 6;
- }
- p_line->p_glyph_pos[ i ].x = i_pen_x;
- p_line->p_glyph_pos[ i ].y = i_pen_y;
- i_error = FT_Load_Glyph( face, i_glyph_index, FT_LOAD_DEFAULT );
- if( i_error )
- {
- msg_Err( p_filter, "unable to render text FT_Load_Glyph returned"
- " %d", i_error );
- goto error;
- }
- i_error = FT_Get_Glyph( glyph, &tmp_glyph );
- if( i_error )
- {
- msg_Err( p_filter, "unable to render text FT_Get_Glyph returned "
- "%d", i_error );
- goto error;
- }
- FT_Glyph_Get_CBox( tmp_glyph, ft_glyph_bbox_pixels, &glyph_size );
- i_error = FT_Glyph_To_Bitmap( &tmp_glyph, ft_render_mode_normal, 0, 1);
- if( i_error )
- {
- FT_Done_Glyph( tmp_glyph );
- continue;
- }
- p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
- /* Do rest */
- line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax -
- glyph_size.xMin + ((FT_BitmapGlyph)tmp_glyph)->left;
- if( line.xMax > (int)p_filter->fmt_out.video.i_visible_width - 20 )
- {
- FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
- p_line->pp_glyphs[ i ] = NULL;
- FreeLine( p_line );
- p_line = NewLine( strlen( psz_string ));
- if( p_prev ) p_prev->p_next = p_line;
- else p_lines = p_line;
- uint32_t *psz_unicode_saved = psz_unicode;
- while( psz_unicode > psz_line_start && *psz_unicode != ' ' )
- {
- psz_unicode--;
- }
- if( psz_unicode == psz_line_start )
- { /* try harder to break that line */
- psz_unicode = psz_unicode_saved;
- while( psz_unicode > psz_line_start &&
- *psz_unicode != '_' && *psz_unicode != '/' &&
- *psz_unicode != '\' && *psz_unicode != '.' )
- {
- psz_unicode--;
- }
- }
- if( psz_unicode == psz_line_start )
- {
- msg_Warn( p_filter, "unbreakable string" );
- goto error;
- }
- else
- {
- *psz_unicode = 'n';
- }
- psz_unicode = psz_line_start;
- i_pen_x = 0;
- i_previous = i = 0;
- line.xMin = line.xMax = line.yMin = line.yMax = 0;
- continue;
- }
- line.yMax = __MAX( line.yMax, glyph_size.yMax );
- line.yMin = __MIN( line.yMin, glyph_size.yMin );
- i_previous = i_glyph_index;
- i_pen_x += glyph->advance.x >> 6;
- i++;
- }
- p_line->i_width = line.xMax;
- p_line->i_height = face->size->metrics.height >> 6;
- p_line->pp_glyphs[ i ] = NULL;
- p_line->i_alpha = i_font_alpha;
- p_line->i_red = i_red;
- p_line->i_green = i_green;
- p_line->i_blue = i_blue;
- result.x = __MAX( result.x, line.xMax );
- result.y += line.yMax - line.yMin;
- #undef face
- #undef glyph
- p_region_out->i_x = p_region_in->i_x;
- p_region_out->i_y = p_region_in->i_y;
- if( config_GetInt( p_filter, "freetype-yuvp" ) )
- Render( p_filter, p_region_out, p_lines, result.x, result.y );
- else
- RenderYUVA( p_filter, p_region_out, p_lines, result.x, result.y );
- free( psz_unicode_orig );
- FreeLines( p_lines );
- return VLC_SUCCESS;
- error:
- free( psz_unicode_orig );
- FreeLines( p_lines );
- return VLC_EGENERIC;
- }
- #ifdef HAVE_FONTCONFIG
- static ft_style_t *CreateStyle( char *psz_fontname, int i_font_size,
- uint32_t i_font_color, uint32_t i_karaoke_bg_color, bool b_bold,
- bool b_italic, bool b_uline )
- {
- ft_style_t *p_style = malloc( sizeof( ft_style_t ));
- if( p_style )
- {
- p_style->i_font_size = i_font_size;
- p_style->i_font_color = i_font_color;
- p_style->i_karaoke_bg_color = i_karaoke_bg_color;
- p_style->b_italic = b_italic;
- p_style->b_bold = b_bold;
- p_style->b_underline = b_uline;
- p_style->psz_fontname = strdup( psz_fontname );
- }
- return p_style;
- }
- static void DeleteStyle( ft_style_t *p_style )
- {
- if( p_style )
- {
- free( p_style->psz_fontname );
- free( p_style );
- }
- }
- static bool StyleEquals( ft_style_t *s1, ft_style_t *s2 )
- {
- if( !s1 || !s2 )
- return false;
- if( s1 == s2 )
- return true;
- if(( s1->i_font_size == s2->i_font_size ) &&
- ( s1->i_font_color == s2->i_font_color ) &&
- ( s1->b_italic == s2->b_italic ) &&
- ( s1->b_bold == s2->b_bold ) &&
- ( s1->b_underline == s2->b_underline ) &&
- ( !strcmp( s1->psz_fontname, s2->psz_fontname )))
- {
- return true;
- }
- return false;
- }
- static void IconvText( filter_t *p_filter, const char *psz_string,
- uint32_t *i_string_length, uint32_t **ppsz_unicode )
- {
- vlc_iconv_t iconv_handle = (vlc_iconv_t)(-1);
- /* If memory hasn't been allocated for our output string, allocate it here
- * - the calling function must now be responsible for freeing it.
- */
- if( !*ppsz_unicode )
- *ppsz_unicode = (uint32_t *)
- malloc( (strlen( psz_string ) + 1) * sizeof( uint32_t ));
- /* We don't need to handle a NULL pointer in *ppsz_unicode
- * if we are instead testing for a non NULL value like we are here */
- if( *ppsz_unicode )
- {
- #if defined(WORDS_BIGENDIAN)
- iconv_handle = vlc_iconv_open( "UCS-4BE", "UTF-8" );
- #else
- iconv_handle = vlc_iconv_open( "UCS-4LE", "UTF-8" );
- #endif
- if( iconv_handle != (vlc_iconv_t)-1 )
- {
- char *p_in_buffer, *p_out_buffer;
- size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
- i_in_bytes = strlen( psz_string );
- i_out_bytes = i_in_bytes * sizeof( uint32_t );
- i_out_bytes_left = i_out_bytes;
- p_in_buffer = (char *) psz_string;
- p_out_buffer = (char *) *ppsz_unicode;
- i_ret = vlc_iconv( iconv_handle, (const char**)&p_in_buffer,
- &i_in_bytes, &p_out_buffer, &i_out_bytes_left );
- vlc_iconv_close( iconv_handle );
- if( i_in_bytes )
- {
- msg_Warn( p_filter, "failed to convert string to unicode (%m), "
- "bytes left %u", (unsigned)i_in_bytes );
- }
- else
- {
- *(uint32_t*)p_out_buffer = 0;
- *i_string_length =
- (i_out_bytes - i_out_bytes_left) / sizeof(uint32_t);
- }
- }
- else
- {
- msg_Warn( p_filter, "unable to do conversion" );
- }
- }
- }
- static ft_style_t *GetStyleFromFontStack( filter_sys_t *p_sys,
- font_stack_t **p_fonts, bool b_bold, bool b_italic,
- bool b_uline )
- {
- ft_style_t *p_style = NULL;
- char *psz_fontname = NULL;
- uint32_t i_font_color = p_sys->i_font_color & 0x00ffffff;
- uint32_t i_karaoke_bg_color = i_font_color;
- int i_font_size = p_sys->i_font_size;
- if( VLC_SUCCESS == PeekFont( p_fonts, &psz_fontname, &i_font_size,
- &i_font_color, &i_karaoke_bg_color ))
- {
- p_style = CreateStyle( psz_fontname, i_font_size, i_font_color,
- i_karaoke_bg_color, b_bold, b_italic, b_uline );
- }
- return p_style;
- }
- static int RenderTag( filter_t *p_filter, FT_Face p_face, int i_font_color,
- bool b_uline, int i_karaoke_bgcolor,
- line_desc_t *p_line, uint32_t *psz_unicode,
- int *pi_pen_x, int i_pen_y, int *pi_start,
- FT_Vector *p_result )
- {
- FT_BBox line;
- int i_yMin, i_yMax;
- int i;
- bool b_first_on_line = true;
- int i_previous = 0;
- int i_pen_x_start = *pi_pen_x;
- uint32_t *psz_unicode_start = psz_unicode;
- line.xMin = line.xMax = line.yMin = line.yMax = 0;
- /* Account for part of line already in position */
- for( i=0; i<*pi_start; i++ )
- {
- FT_BBox glyph_size;
- FT_Glyph_Get_CBox( (FT_Glyph) p_line->pp_glyphs[ i ],
- ft_glyph_bbox_pixels, &glyph_size );
- line.xMax = p_line->p_glyph_pos[ i ].x + glyph_size.xMax -
- glyph_size.xMin + p_line->pp_glyphs[ i ]->left;
- line.yMax = __MAX( line.yMax, glyph_size.yMax );
- line.yMin = __MIN( line.yMin, glyph_size.yMin );
- }
- i_yMin = line.yMin;
- i_yMax = line.yMax;
- if( line.xMax > 0 )
- b_first_on_line = false;
- while( *psz_unicode && ( *psz_unicode != 'n' ) )
- {
- FT_BBox glyph_size;
- FT_Glyph tmp_glyph;
- int i_error;
- int i_glyph_index = FT_Get_Char_Index( p_face, *psz_unicode++ );
- if( FT_HAS_KERNING( p_face ) && i_glyph_index
- && i_previous )
- {
- FT_Vector delta;
- FT_Get_Kerning( p_face, i_previous, i_glyph_index,
- ft_kerning_default, &delta );
- *pi_pen_x += delta.x >> 6;
- }
- p_line->p_glyph_pos[ i ].x = *pi_pen_x;
- p_line->p_glyph_pos[ i ].y = i_pen_y;
- i_error = FT_Load_Glyph( p_face, i_glyph_index, FT_LOAD_DEFAULT );
- if( i_error )
- {
- msg_Err( p_filter,
- "unable to render text FT_Load_Glyph returned %d", i_error );
- p_line->pp_glyphs[ i ] = NULL;
- return VLC_EGENERIC;
- }
- i_error = FT_Get_Glyph( p_face->glyph, &tmp_glyph );
- if( i_error )
- {
- msg_Err( p_filter,
- "unable to render text FT_Get_Glyph returned %d", i_error );
- p_line->pp_glyphs[ i ] = NULL;
- return VLC_EGENERIC;
- }
- FT_Glyph_Get_CBox( tmp_glyph, ft_glyph_bbox_pixels, &glyph_size );
- i_error = FT_Glyph_To_Bitmap( &tmp_glyph, FT_RENDER_MODE_NORMAL, 0, 1);
- if( i_error )
- {
- FT_Done_Glyph( tmp_glyph );
- continue;
- }
- if( b_uline )
- {
- float aOffset = FT_FLOOR(FT_MulFix(p_face->underline_position,
- p_face->size->metrics.y_scale));
- float aSize = FT_CEIL(FT_MulFix(p_face->underline_thickness,
- p_face->size->metrics.y_scale));
- p_line->pi_underline_offset[ i ] =
- ( aOffset < 0 ) ? -aOffset : aOffset;
- p_line->pi_underline_thickness[ i ] =
- ( aSize < 0 ) ? -aSize : aSize;
- }
- p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
- p_line->p_fg_rgb[ i ] = i_font_color & 0x00ffffff;
- p_line->p_bg_rgb[ i ] = i_karaoke_bgcolor & 0x00ffffff;
- p_line->p_fg_bg_ratio[ i ] = 0x00;
- line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax -
- glyph_size.xMin + ((FT_BitmapGlyph)tmp_glyph)->left;
- if( line.xMax > (int)p_filter->fmt_out.video.i_visible_width - 20 )
- {
- for( ; i >= *pi_start; i-- )
- FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
- i = *pi_start;
- while( psz_unicode > psz_unicode_start && *psz_unicode != ' ' )
- {
- psz_unicode--;
- }
- if( psz_unicode == psz_unicode_start )
- {
- if( b_first_on_line )
- {
- msg_Warn( p_filter, "unbreakable string" );
- p_line->pp_glyphs[ i ] = NULL;
- return VLC_EGENERIC;
- }
- *pi_pen_x = i_pen_x_start;
- p_line->i_width = line.xMax;
- p_line->i_height = __MAX( p_line->i_height,
- p_face->size->metrics.height >> 6 );
- p_line->pp_glyphs[ i ] = NULL;
- p_result->x = __MAX( p_result->x, line.xMax );
- p_result->y = __MAX( p_result->y, __MAX( p_line->i_height,
- i_yMax - i_yMin ) );
- return VLC_SUCCESS;
- }
- else
- {
- *psz_unicode = 'n';
- }
- psz_unicode = psz_unicode_start;
- *pi_pen_x = i_pen_x_start;
- i_previous = 0;
- line.yMax = i_yMax;
- line.yMin = i_yMin;
- continue;
- }
- line.yMax = __MAX( line.yMax, glyph_size.yMax );
- line.yMin = __MIN( line.yMin, glyph_size.yMin );
- i_previous = i_glyph_index;
- *pi_pen_x += p_face->glyph->advance.x >> 6;
- i++;
- }
- p_line->i_width = line.xMax;
- p_line->i_height = __MAX( p_line->i_height,
- p_face->size->metrics.height >> 6 );
- p_line->pp_glyphs[ i ] = NULL;
- p_result->x = __MAX( p_result->x, line.xMax );
- p_result->y = __MAX( p_result->y, __MAX( p_line->i_height,
- line.yMax - line.yMin ) );
- *pi_start = i;
- /* Get rid of any text processed - if necessary repositioning
- * at the start of a new line of text
- */
- if( !*psz_unicode )
- {
- *psz_unicode_start = ' ';
- }
- else if( psz_unicode > psz_unicode_start )
- {
- for( i=0; psz_unicode[ i ]; i++ )
- psz_unicode_start[ i ] = psz_unicode[ i ];
- psz_unicode_start[ i ] = ' ';
- }
- return VLC_SUCCESS;
- }
- static void SetupLine( filter_t *p_filter, const char *psz_text_in,
- uint32_t **psz_text_out, uint32_t *pi_runs,
- uint32_t **ppi_run_lengths, ft_style_t ***ppp_styles,
- ft_style_t *p_style )
- {
- uint32_t i_string_length = 0;
- IconvText( p_filter, psz_text_in, &i_string_length, psz_text_out );
- *psz_text_out += i_string_length;
- if( ppp_styles && ppi_run_lengths )
- {
- (*pi_runs)++;
- if( *ppp_styles )
- {
- *ppp_styles = (ft_style_t **)
- realloc( *ppp_styles, *pi_runs * sizeof( ft_style_t * ) );
- }
- else if( *pi_runs == 1 )
- {
- *ppp_styles = (ft_style_t **)
- malloc( *pi_runs * sizeof( ft_style_t * ) );
- }
- /* We have just malloc'ed this memory successfully -
- * *pi_runs HAS to be within the memory area of *ppp_styles */
- if( *ppp_styles )
- {
- (*ppp_styles)[ *pi_runs - 1 ] = p_style;
- p_style = NULL;
- }
- if( *ppi_run_lengths )
- {
- *ppi_run_lengths = (uint32_t *)
- realloc( *ppi_run_lengths, *pi_runs * sizeof( uint32_t ) );
- }
- else if( *pi_runs == 1 )
- {
- *ppi_run_lengths = (uint32_t *)
- malloc( *pi_runs * sizeof( uint32_t ) );
- }
- /* same remarks here */
- if( *ppi_run_lengths )
- {
- (*ppi_run_lengths)[ *pi_runs - 1 ] = i_string_length;
- }
- }
- /* If we couldn't use the p_style argument due to memory allocation
- * problems above, release it here.
- */
- if( p_style ) DeleteStyle( p_style );
- }
- static int CheckForEmbeddedFont( filter_sys_t *p_sys, FT_Face *pp_face, ft_style_t *p_style )
- {
- int k;
- for( k=0; k < p_sys->i_font_attachments; k++ )
- {
- input_attachment_t *p_attach = p_sys->pp_font_attachments[k];
- int i_font_idx = 0;
- FT_Face p_face = NULL;
- while( 0 == FT_New_Memory_Face( p_sys->p_library,
- p_attach->p_data,
- p_attach->i_data,
- i_font_idx,
- &p_face ))
- {
- if( p_face )
- {
- bool match = !strcasecmp( p_face->family_name,
- p_style->psz_fontname );
- if( p_face->style_flags & FT_STYLE_FLAG_BOLD )
- match = match && p_style->b_bold;
- else
- match = match && !p_style->b_bold;
- if( p_face->style_flags & FT_STYLE_FLAG_ITALIC )
- match = match && p_style->b_italic;
- else
- match = match && !p_style->b_italic;
- if( match )
- {
- *pp_face = p_face;
- return VLC_SUCCESS;
- }
- FT_Done_Face( p_face );
- }
- i_font_idx++;
- }
- }
- return VLC_EGENERIC;
- }
- static int ProcessLines( filter_t *p_filter,
- uint32_t *psz_text,
- int i_len,
- uint32_t i_runs,
- uint32_t *pi_run_lengths,
- ft_style_t **pp_styles,
- line_desc_t **pp_lines,
- FT_Vector *p_result,
- bool b_karaoke,
- uint32_t i_k_runs,
- uint32_t *pi_k_run_lengths,
- uint32_t *pi_k_durations )
- {
- filter_sys_t *p_sys = p_filter->p_sys;
- ft_style_t **pp_char_styles;
- int *p_new_positions = NULL;
- int8_t *p_levels = NULL;
- uint8_t *pi_karaoke_bar = NULL;
- uint32_t i, j, k;
- int i_prev;
- /* Assign each character in the text string its style explicitly, so that
- * after the characters have been shuffled around by Fribidi, we can re-apply
- * the styles, and to simplify the calculation of runs within a line.
- */
- pp_char_styles = (ft_style_t **) malloc( i_len * sizeof( ft_style_t * ));
- if( !pp_char_styles )
- return VLC_ENOMEM;
- if( b_karaoke )
- {
- pi_karaoke_bar = (uint8_t *) malloc( i_len * sizeof( uint8_t ));
- /* 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.
- */
- }
- i = 0;
- for( j = 0; j < i_runs; j++ )
- for( k = 0; k < pi_run_lengths[ j ]; k++ )
- pp_char_styles[ i++ ] = pp_styles[ j ];
- #if defined(HAVE_FRIBIDI)
- {
- ft_style_t **pp_char_styles_new;
- int *p_old_positions;
- uint32_t *p_fribidi_string;
- int start_pos, pos = 0;
- pp_char_styles_new = (ft_style_t **)
- malloc( i_len * sizeof( ft_style_t * ));
- p_fribidi_string = (uint32_t *)
- malloc( (i_len + 1) * sizeof(uint32_t) );
- p_old_positions = (int *)
- malloc( (i_len + 1) * sizeof( int ) );
- p_new_positions = (int *)
- malloc( (i_len + 1) * sizeof( int ) );
- p_levels = (int8_t *)
- malloc( (i_len + 1) * sizeof( int8_t ) );
- if( ! pp_char_styles_new ||
- ! p_fribidi_string ||
- ! p_old_positions ||
- ! p_new_positions ||
- ! p_levels )
- {
- free( p_levels );
- free( p_old_positions );
- free( p_new_positions );
- free( p_fribidi_string );
- free( pp_char_styles_new );
- free( pi_karaoke_bar );
- free( pp_char_styles );
- return VLC_ENOMEM;
- }
- /* Do bidi conversion line-by-line */
- while(pos < i_len)
- {
- while(pos < i_len) {
- if (psz_text[pos] != 'n')
- break;
- p_fribidi_string[pos] = psz_text[pos];
- pp_char_styles_new[pos] = pp_char_styles[pos];
- p_new_positions[pos] = pos;
- p_levels[pos] = 0;
- ++pos;
- }
- start_pos = pos;
- while(pos < i_len) {
- if (psz_text[pos] == 'n')
- break;
- ++pos;
- }
- if (pos > start_pos)
- {
- FriBidiCharType base_dir = FRIBIDI_TYPE_LTR;
- fribidi_log2vis((FriBidiChar*)psz_text + start_pos,
- pos - start_pos, &base_dir,
- (FriBidiChar*)p_fribidi_string + start_pos,
- p_new_positions + start_pos,
- p_old_positions,
- p_levels + start_pos );
- for( j = (uint32_t) start_pos; j < (uint32_t) pos; j++ )
- {
- pp_char_styles_new[ j ] = pp_char_styles[ start_pos +
- p_old_positions[ j - start_pos ] ];
- p_new_positions[ j ] += start_pos;
- }
- }
- }
- free( p_old_positions );
- free( pp_char_styles );
- pp_char_styles = pp_char_styles_new;
- psz_text = p_fribidi_string;
- p_fribidi_string[ i_len ] = 0;
- }
- #endif
- /* Work out the karaoke */
- if( pi_karaoke_bar )
- {
- int64_t i_last_duration = 0;
- int64_t i_duration = 0;
- int64_t i_start_pos = 0;
- int64_t i_elapsed = var_GetTime( p_filter, "spu-elapsed" ) / 1000;
- for( k = 0; k< i_k_runs; k++ )
- {
- double fraction = 0.0;
- i_duration += pi_k_durations[ k ];
- if( i_duration < i_elapsed )
- {
- /* Completely finished this run-length -
- * let it render normally */
- fraction = 1.0;
- }
- else if( i_elapsed < i_last_duration )
- {
- /* Haven't got up to this segment yet -
- * render it completely in karaoke BG mode */
- fraction = 0.0;
- }
- else
- {
- /* Partway through this run */
- fraction = (double)(i_elapsed - i_last_duration) /
- (double)pi_k_durations[ k ];
- }
- for( i = 0; i < pi_k_run_lengths[ k ]; i++ )
- {
- double shade = pi_k_run_lengths[ k ] * fraction;
- if( p_new_positions )
- j = p_new_positions[ i_start_pos + i ];
- else
- j = i_start_pos + i;
- if( i < (uint32_t)shade )
- pi_karaoke_bar[ j ] = 0xff;
- else if( (double)i > shade )
- pi_karaoke_bar[ j ] = 0x00;
- else
- {
- shade -= (int)shade;
- pi_karaoke_bar[ j ] = ((int)(shade * 128.0) & 0x7f) |
- ((p_levels ? (p_levels[ j ] % 2) : 0 ) << 7);
- }
- }
- i_last_duration = i_duration;
- i_start_pos += pi_k_run_lengths[ k ];
- }
- }
- free( p_levels );
- free( p_new_positions );
- FT_Vector tmp_result;
- line_desc_t *p_line = NULL;
- line_desc_t *p_prev = NULL;
- int i_pen_x = 0;
- int i_pen_y = 0;
- int i_posn = 0;
- p_result->x = p_result->y = 0;
- tmp_result.x = tmp_result.y = 0;
- i_prev = 0;
- for( k = 0; k <= (uint32_t) i_len; k++ )
- {
- if( ( k == (uint32_t) i_len ) ||
- ( ( k > 0 ) &&
- !StyleEquals( pp_char_styles[ k ], pp_char_styles[ k - 1] ) ) )
- {
- ft_style_t *p_style = pp_char_styles[ k - 1 ];
- /* End of the current style run */
- FT_Face p_face = NULL;
- int i_idx = 0;
- /* Look for a match amongst our attachments first */
- CheckForEmbeddedFont( p_sys, &p_face, p_style );
- if( ! p_face )
- {
- char *psz_fontfile = NULL;
- vlc_mutex_lock( &fb_lock );
- if( p_sys->b_fontconfig_ok )
- {
- /* FIXME Is there really a race condition between FontConfig_Select with default fontconfig(NULL)
- * and FcConfigBuildFonts ? If not it would be better to remove the check on b_fontconfig_ok */
- psz_fontfile = FontConfig_Select( p_sys->p_fontconfig,
- p_style->psz_fontname,
- p_style->b_bold,
- p_style->b_italic,
- &i_idx );
- }
- vlc_mutex_unlock( &fb_lock );
- if( psz_fontfile && ! *psz_fontfile )
- {
- msg_Warn( p_filter, "Fontconfig was unable to find a font: "%s" %s"
- " so using default font", p_style->psz_fontname,
- ((p_style->b_bold && p_style->b_italic) ? "(Bold,Italic)" :
- (p_style->b_bold ? "(Bold)" :
- (p_style->b_italic ? "(Italic)" : ""))) );
- free( psz_fontfile );
- psz_fontfile = NULL;
- }
- if( psz_fontfile )
- {
- if( FT_New_Face( p_sys->p_library,
- psz_fontfile, i_idx, &p_face ) )
- {
- free( psz_fontfile );
- free( pp_char_styles );
- #if defined(HAVE_FRIBIDI)
- free( psz_text );
- #endif
- free( pi_karaoke_bar );
- return VLC_EGENERIC;
- }
- free( psz_fontfile );
- }
- }
- if( p_face &&
- FT_Select_Charmap( p_face, ft_encoding_unicode ) )
- {
- /* We've loaded a font face which is unhelpful for actually
- * rendering text - fallback to the default one.
- */
- FT_Done_Face( p_face );
- p_face = NULL;
- }
- if( FT_Select_Charmap( p_face ? p_face : p_sys->p_face,
- ft_encoding_unicode ) ||
- FT_Set_Pixel_Sizes( p_face ? p_face : p_sys->p_face, 0,
- p_style->i_font_size ) )
- {
- if( p_face ) FT_Done_Face( p_face );
- free( pp_char_styles );
- #if defined(HAVE_FRIBIDI)
- free( psz_text );
- #endif
- free( pi_karaoke_bar );
- return VLC_EGENERIC;
- }
- p_sys->i_use_kerning =
- FT_HAS_KERNING( ( p_face ? p_face : p_sys->p_face ) );
- uint32_t *psz_unicode = (uint32_t *)
- malloc( (k - i_prev + 1) * sizeof( uint32_t ));
- if( !psz_unicode )
- {
- if( p_face ) FT_Done_Face( p_face );
- free( pp_char_styles );
- free( psz_unicode );
- #if defined(HAVE_FRIBIDI)
- free( psz_text );
- #endif
- free( pi_karaoke_bar );
- return VLC_ENOMEM;
- }
- memcpy( psz_unicode, psz_text + i_prev,
- sizeof( uint32_t ) * ( k - i_prev ) );
- psz_unicode[ k - i_prev ] = 0;
- while( *psz_unicode )
- {
- if( !p_line )
- {
- if( !(p_line = NewLine( i_len - i_prev)) )
- {
- if( p_face ) FT_Done_Face( p_face );
- free( pp_char_styles );
- free( psz_unicode );
- #if defined(HAVE_FRIBIDI)
- free( psz_text );
- #endif
- free( pi_karaoke_bar );
- return VLC_ENOMEM;
- }
- /* New Color mode only works in YUVA rendering mode --
- * (RGB mode has palette constraints on it). We therefore
- * need to populate the legacy colour fields also.
- */
- p_line->b_new_color_mode = true;
- p_line->i_alpha = ( p_style->i_font_color & 0xff000000 ) >> 24;
- p_line->i_red = ( p_style->i_font_color & 0x00ff0000 ) >> 16;
- p_line->i_green = ( p_style->i_font_color & 0x0000ff00 ) >> 8;
- p_line->i_blue = ( p_style->i_font_color & 0x000000ff );
- p_line->p_next = NULL;
- i_pen_x = 0;
- i_pen_y += tmp_result.y;
- tmp_result.x = 0;
- tmp_result.y = 0;
- i_posn = 0;
- if( p_prev ) p_prev->p_next = p_line;
- else *pp_lines = p_line;
- }
- if( RenderTag( p_filter, p_face ? p_face : p_sys->p_face,
- p_style->i_font_color, p_style->b_underline,
- p_style->i_karaoke_bg_color,
- p_line, psz_unicode, &i_pen_x, i_pen_y, &i_posn,
- &tmp_result ) != VLC_SUCCESS )
- {
- if( p_face ) FT_Done_Face( p_face );
- free( pp_char_styles );
- free( psz_unicode );
- #if defined(HAVE_FRIBIDI)
- free( psz_text );
- #endif
- free( pi_karaoke_bar );
- return VLC_EGENERIC;
- }
- if( *psz_unicode )
- {
- p_result->x = __MAX( p_result->x, tmp_result.x );
- p_result->y += tmp_result.y;
- p_prev = p_line;
- p_line = NULL;
- if( *psz_unicode == 'n')
- {
- uint32_t *c_ptr;
- for( c_ptr = psz_unicode; *c_ptr; c_ptr++ )
- {
- *c_ptr = *(c_ptr+1);
- }
- }
- }
- }
- free( psz_unicode );
- if( p_face ) FT_Done_Face( p_face );
- i_prev = k;
- }
- }
- free( pp_char_styles );
- #if defined(HAVE_FRIBIDI)
- free( psz_text );
- #endif
- if( p_line )
- {
- p_result->x = __MAX( p_result->x, tmp_result.x );
- 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( 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;
- }
- static int RenderHtml( filter_t *p_filter, subpicture_region_t *p_region_out,
- subpicture_region_t *p_region_in )
- {
- int rv = VLC_SUCCESS;
- stream_t *p_sub = NULL;
- xml_reader_t *p_xml_reader = NULL;
- if( !p_region_in || !p_region_in->psz_html )
- return VLC_EGENERIC;
- /* Reset the default fontsize in case screen metrics have changed */
- p_filter->p_sys->i_font_size = GetFontSize( p_filter );
- p_sub = stream_MemoryNew( VLC_OBJECT(p_filter),
- (uint8_t *) p_region_in->psz_html,
- strlen( p_region_in->psz_html ),
- true );
- if( p_sub )
- {
- if( !p_filter->p_sys->p_xml ) p_filter->p_sys->p_xml = xml_Create( p_filter );
- if( p_filter->p_sys->p_xml )
- {
- bool b_karaoke = false;
- p_xml_reader = xml_ReaderCreate( p_filter->p_sys->p_xml, p_sub );
- if( p_xml_reader )
- {
- /* Look for Root Node */
- if( xml_ReaderRead( p_xml_reader ) == 1 )
- {
- char *psz_node = xml_ReaderName( p_xml_reader );
- if( !strcasecmp( "karaoke", psz_node ) )
- {
- /* We're going to have to render the text a number
- * of times to show the progress marker on the text.
- */
- var_SetBool( p_filter, "text-rerender", true );
- b_karaoke = true;
- }
- else if( !strcasecmp( "text", psz_node ) )
- {
- b_karaoke = false;
- }
- else
- {
- /* Only text and karaoke tags are supported */
- msg_Dbg( p_filter, "Unsupported top-level tag '%s' ignored.", psz_node );
- xml_ReaderDelete( p_filter->p_sys->p_xml, p_xml_reader );
- p_xml_reader = NULL;
- rv = VLC_EGENERIC;
- }
- free( psz_node );
- }
- }
- if( p_xml_reader )
- {
- uint32_t *psz_text;
- int i_len = 0;
- uint32_t i_runs = 0;
- uint32_t i_k_runs = 0;
- uint32_t *pi_run_lengths = NULL;
- uint32_t *pi_k_run_lengths = NULL;
- uint32_t *pi_k_durations = NULL;
- ft_style_t **pp_styles = NULL;
- FT_Vector result;
- line_desc_t *p_lines = NULL;
- psz_text = (uint32_t *)malloc( strlen( p_region_in->psz_html ) *
- sizeof( uint32_t ) );
- if( psz_text )
- {
- uint32_t k;
- rv = ProcessNodes( p_filter, p_xml_reader,
- p_region_in->p_style, psz_text, &i_len,
- &i_runs, &pi_run_lengths, &pp_styles,
- b_karaoke, &i_k_runs, &pi_k_run_lengths,
- &pi_k_durations );
- p_region_out->i_x = p_region_in->i_x;
- p_region_out->i_y = p_region_in->i_y;
- if(( rv == VLC_SUCCESS ) && ( i_len > 0 ))
- {
- rv = ProcessLines( p_filter, psz_text, i_len, i_runs,
- pi_run_lengths, pp_styles, &p_lines, &result,
- b_karaoke, i_k_runs, pi_k_run_lengths,
- pi_k_durations );
- }
- for( k=0; k<i_runs; k++)
- DeleteStyle( pp_styles[k] );
- free( pp_styles );
- free( pi_run_lengths );
- free( psz_text );
- /* Don't attempt to render text that couldn't be layed out
- * properly.
- */
- if(( rv == VLC_SUCCESS ) && ( i_len > 0 ))
- {
- if( config_GetInt( p_filter, "freetype-yuvp" ) )
- {
- Render( p_filter, p_region_out, p_lines,
- result.x, result.y );
- }
- else
- {
- RenderYUVA( p_filter, p_region_out, p_lines,
- result.x, result.y );
- }
- }
- }
- FreeLines( p_lines );
- xml_ReaderDelete( p_filter->p_sys->p_xml, p_xml_reader );
- }
- }
- stream_Delete( p_sub );
- }
- return rv;
- }
- static char* FontConfig_Select( FcConfig* priv, const char* family,
- bool b_bold, bool b_italic, int *i_idx )
- {
- FcResult result;
- FcPattern *pat, *p_pat;
- FcChar8* val_s;
- FcBool val_b;
- pat = FcPatternCreate();
- if (!pat) return NULL;
- FcPatternAddString( pat, FC_FAMILY, (const FcChar8*)family );
- FcPatternAddBool( pat, FC_OUTLINE, FcTrue );
- FcPatternAddInteger( pat, FC_SLANT, b_italic ? FC_SLANT_ITALIC : FC_SLANT_ROMAN );
- FcPatternAddInteger( pat, FC_WEIGHT, b_bold ? FC_WEIGHT_EXTRABOLD : FC_WEIGHT_NORMAL );
- FcDefaultSubstitute( pat );
- if( !FcConfigSubstitute( priv, pat, FcMatchPattern ) )
- {
- FcPatternDestroy( pat );
- return NULL;
- }
- p_pat = FcFontMatch( priv, pat, &result );
- FcPatternDestroy( pat );
- if( !p_pat ) return NULL;
- if( ( FcResultMatch != FcPatternGetBool( p_pat, FC_OUTLINE, 0, &val_b ) )
- || ( val_b != FcTrue ) )
- {
- FcPatternDestroy( p_pat );
- return NULL;
- }
- if( FcResultMatch != FcPatternGetInteger( p_pat, FC_INDEX, 0, i_idx ) )
- {
- *i_idx = 0;
- }
- if( FcResultMatch != FcPatternGetString( p_pat, FC_FAMILY, 0, &val_s ) )
- {
- FcPatternDestroy( p_pat );
- return NULL;
- }
- /*
- if( strcasecmp((const char*)val_s, family ) != 0 )
- msg_Warn( p_filter, "fontconfig: selected font family is not"
- "the requested one: '%s' != '%s'n",
- (const char*)val_s, family );
- */
- if( FcResultMatch != FcPatternGetString( p_pat, FC_FILE, 0, &val_s ) )
- {
- FcPatternDestroy( p_pat );
- return NULL;
- }
- FcPatternDestroy( p_pat );
- return strdup( (const char*)val_s );
- }
- #else
- static void SetupLine( filter_t *p_filter, const char *psz_text_in,
- uint32_t **psz_text_out, uint32_t *pi_runs,
- uint32_t **ppi_run_lengths, ft_style_t ***ppp_styles,
- ft_style_t *p_style )
- {
- VLC_UNUSED(p_filter);
- VLC_UNUSED(psz_text_in);
- VLC_UNUSED(psz_text_out);
- VLC_UNUSED(pi_runs);
- VLC_UNUSED(ppi_run_lengths);
- VLC_UNUSED(ppp_styles);
- VLC_UNUSED(p_style);
- }
- static ft_style_t *GetStyleFromFontStack( filter_sys_t *p_sys,
- font_stack_t **p_fonts, bool b_bold, bool b_italic,
- bool b_uline )
- {
- VLC_UNUSED(p_sys);
- VLC_UNUSED(p_fonts);
- VLC_UNUSED(b_bold);
- VLC_UNUSED(b_italic);
- VLC_UNUSED(b_uline);
- return NULL;
- }
- #endif
- static void FreeLine( line_desc_t *p_line )
- {
- unsigned int i;
- for( i = 0; p_line->pp_glyphs[ i ] != NULL; i++ )
- {
- FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
- }
- 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_underline_offset );
- free( p_line->pi_underline_thickness );
- free( p_line );
- }
- static void FreeLines( line_desc_t *p_lines )
- {
- line_desc_t *p_line, *p_next;
- if( !p_lines ) return;
- for( p_line = p_lines; p_line != NULL; p_line = p_next )
- {
- p_next = p_line->p_next;
- FreeLine( p_line );
- }
- }
- static line_desc_t *NewLine( int i_count )
- {
- line_desc_t *p_line = malloc( sizeof(line_desc_t) );
- if( !p_line ) return NULL;
- p_line->i_height = 0;
- p_line->i_width = 0;
- p_line->p_next = NULL;
- p_line->pp_glyphs = malloc( sizeof(FT_BitmapGlyph) * ( i_count + 1 ) );
- p_line->p_glyph_pos = malloc( sizeof( FT_Vector ) * ( i_count + 1 ) );
- p_line->p_fg_rgb = malloc( sizeof( uint32_t ) * ( i_count + 1 ) );
- p_line->p_bg_rgb = malloc( sizeof( uint32_t ) * ( i_count + 1 ) );
- p_line->p_fg_bg_ratio = calloc( i_count + 1, sizeof( uint8_t ) );
- p_line->pi_underline_offset = calloc( i_count + 1, sizeof( uint16_t ) );
- p_line->pi_underline_thickness = calloc( i_count + 1, sizeof( uint16_t ) );
- if( ( p_line->pp_glyphs == NULL ) ||
- ( p_line->p_glyph_pos == NULL ) ||
- ( p_line->p_fg_rgb == NULL ) ||
- ( p_line->p_bg_rgb == NULL ) ||
- ( p_line->p_fg_bg_ratio == NULL ) ||
- ( p_line->pi_underline_offset == NULL ) ||
- ( p_line->pi_underline_thickness == NULL ) )
- {
- free( p_line->pi_underline_thickness );
- free( p_line->pi_underline_offset );
- free( p_line->p_fg_rgb );
- free( p_line->p_bg_rgb );
- free( p_line->p_fg_bg_ratio );
- free( p_line->p_glyph_pos );
- free( p_line->pp_glyphs );
- free( p_line );
- return NULL;
- }
- p_line->pp_glyphs[0] = NULL;
- p_line->b_new_color_mode = false;
- return p_line;
- }
- static int GetFontSize( filter_t *p_filter )
- {
- filter_sys_t *p_sys = p_filter->p_sys;
- vlc_value_t val;
- int i_size = 0;
- if( p_sys->i_default_font_size )
- {
- if( VLC_SUCCESS == var_Get( p_filter, "scale", &val ))
- i_size = p_sys->i_default_font_size * val.i_int / 1000;
- else
- i_size = p_sys->i_default_font_size;
- }
- else
- {
- var_Get( p_filter, "freetype-rel-fontsize", &val );
- if( val.i_int > 0 )
- {
- i_size = (int)p_filter->fmt_out.video.i_height / val.i_int;
- p_filter->p_sys->i_display_height =
- p_filter->fmt_out.video.i_height;
- }
- }
- if( i_size <= 0 )
- {
- msg_Warn( p_filter, "invalid fontsize, using 12" );
- if( VLC_SUCCESS == var_Get( p_filter, "scale", &val ))
- i_size = 12 * val.i_int / 1000;
- else
- i_size = 12;
- }
- return i_size;
- }
- static int SetFontSize( filter_t *p_filter, int i_size )
- {
- filter_sys_t *p_sys = p_filter->p_sys;
- if( !i_size )
- {
- i_size = GetFontSize( p_filter );
- msg_Dbg( p_filter, "using fontsize: %i", i_size );
- }
- p_sys->i_font_size = i_size;
- if( FT_Set_Pixel_Sizes( p_sys->p_face, 0, i_size ) )
- {
- msg_Err( p_filter, "couldn't set font size to %d", i_size );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- static void YUVFromRGB( uint32_t i_argb,
- uint8_t *pi_y, uint8_t *pi_u, uint8_t *pi_v )
- {
- int i_red = ( i_argb & 0x00ff0000 ) >> 16;
- int i_green = ( i_argb & 0x0000ff00 ) >> 8;
- int i_blue = ( i_argb & 0x000000ff );
- *pi_y = (uint8_t)__MIN(abs( 2104 * i_red + 4130 * i_green +
- 802 * i_blue + 4096 + 131072 ) >> 13, 235);
- *pi_u = (uint8_t)__MIN(abs( -1214 * i_red + -2384 * i_green +
- 3598 * i_blue + 4096 + 1048576) >> 13, 240);
- *pi_v = (uint8_t)__MIN(abs( 3598 * i_red + -3013 * i_green +
- -585 * i_blue + 4096 + 1048576) >> 13, 240);
- }