Laurent Aimar
15 years ago
4 changed files with 616 additions and 654 deletions
@ -1,645 +0,0 @@ |
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/*****************************************************************************
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* text_renderer.h: common text renderer code |
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***************************************************************************** |
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* Copyright (C) 2007-2011 the VideoLAN team |
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* $Id$ |
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* |
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* Authors: Bernie Purcell <bitmap@videolan.org> |
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* Laurent Aimar < fenrir AT videolan DOT org > |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. |
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*****************************************************************************/ |
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#include <vlc_memory.h> /* realloc_or_free */ |
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#include <vlc_text_style.h> /* text_style_t*/ |
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#include <vlc_filter.h> /* filter_sys_t */ |
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typedef struct font_stack_t font_stack_t; |
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struct font_stack_t |
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{ |
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char *psz_name; |
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int i_size; |
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uint32_t i_color; /* ARGB */ |
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uint32_t i_karaoke_bg_color; /* ARGB */ |
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font_stack_t *p_next; |
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}; |
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static void SetupLine( filter_t *p_filter, const char *psz_text_in, |
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UCHAR **psz_text_out, uint32_t *pi_runs, |
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uint32_t **ppi_run_lengths, TR_FONT_STYLE_PTR **ppp_styles, |
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TR_FONT_STYLE_PTR p_style ); |
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static TR_FONT_STYLE_PTR GetStyleFromFontStack( filter_sys_t *p_sys, |
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font_stack_t **p_fonts, bool b_bold, bool b_italic, |
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bool b_uline, bool b_through ); |
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static int PushFont( font_stack_t **p_font, const char *psz_name, int i_size, |
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uint32_t i_color, uint32_t i_karaoke_bg_color ) |
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{ |
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font_stack_t *p_new; |
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if( !p_font ) |
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return VLC_EGENERIC; |
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p_new = malloc( sizeof( font_stack_t ) ); |
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if( ! p_new ) |
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return VLC_ENOMEM; |
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p_new->p_next = NULL; |
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if( psz_name ) |
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p_new->psz_name = strdup( psz_name ); |
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else |
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p_new->psz_name = NULL; |
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p_new->i_size = i_size; |
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p_new->i_color = i_color; |
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p_new->i_karaoke_bg_color = i_karaoke_bg_color; |
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if( !*p_font ) |
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{ |
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*p_font = p_new; |
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} |
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else |
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{ |
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font_stack_t *p_last; |
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for( p_last = *p_font; |
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p_last->p_next; |
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p_last = p_last->p_next ) |
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; |
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p_last->p_next = p_new; |
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} |
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return VLC_SUCCESS; |
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} |
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static int PopFont( font_stack_t **p_font ) |
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{ |
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font_stack_t *p_last, *p_next_to_last; |
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if( !p_font || !*p_font ) |
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return VLC_EGENERIC; |
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p_next_to_last = NULL; |
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for( p_last = *p_font; |
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p_last->p_next; |
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p_last = p_last->p_next ) |
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{ |
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p_next_to_last = p_last; |
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} |
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if( p_next_to_last ) |
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p_next_to_last->p_next = NULL; |
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else |
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*p_font = NULL; |
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free( p_last->psz_name ); |
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free( p_last ); |
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return VLC_SUCCESS; |
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} |
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static int PeekFont( font_stack_t **p_font, char **psz_name, int *i_size, |
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uint32_t *i_color, uint32_t *i_karaoke_bg_color ) |
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{ |
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font_stack_t *p_last; |
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if( !p_font || !*p_font ) |
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return VLC_EGENERIC; |
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for( p_last=*p_font; |
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p_last->p_next; |
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p_last=p_last->p_next ) |
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; |
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*psz_name = p_last->psz_name; |
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*i_size = p_last->i_size; |
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*i_color = p_last->i_color; |
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*i_karaoke_bg_color = p_last->i_karaoke_bg_color; |
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return VLC_SUCCESS; |
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} |
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static const struct { |
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const char *psz_name; |
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uint32_t i_value; |
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} p_html_colors[] = { |
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/* Official html colors */ |
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{ "Aqua", 0x00FFFF }, |
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{ "Black", 0x000000 }, |
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{ "Blue", 0x0000FF }, |
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{ "Fuchsia", 0xFF00FF }, |
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{ "Gray", 0x808080 }, |
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{ "Green", 0x008000 }, |
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{ "Lime", 0x00FF00 }, |
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{ "Maroon", 0x800000 }, |
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{ "Navy", 0x000080 }, |
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{ "Olive", 0x808000 }, |
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{ "Purple", 0x800080 }, |
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{ "Red", 0xFF0000 }, |
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{ "Silver", 0xC0C0C0 }, |
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{ "Teal", 0x008080 }, |
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{ "White", 0xFFFFFF }, |
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{ "Yellow", 0xFFFF00 }, |
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/* Common ones */ |
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{ "AliceBlue", 0xF0F8FF }, |
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{ "AntiqueWhite", 0xFAEBD7 }, |
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{ "Aqua", 0x00FFFF }, |
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{ "Aquamarine", 0x7FFFD4 }, |
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{ "Azure", 0xF0FFFF }, |
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{ "Beige", 0xF5F5DC }, |
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{ "Bisque", 0xFFE4C4 }, |
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{ "Black", 0x000000 }, |
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{ "BlanchedAlmond", 0xFFEBCD }, |
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{ "Blue", 0x0000FF }, |
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{ "BlueViolet", 0x8A2BE2 }, |
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{ "Brown", 0xA52A2A }, |
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{ "BurlyWood", 0xDEB887 }, |
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{ "CadetBlue", 0x5F9EA0 }, |
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{ "Chartreuse", 0x7FFF00 }, |
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{ "Chocolate", 0xD2691E }, |
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{ "Coral", 0xFF7F50 }, |
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{ "CornflowerBlue", 0x6495ED }, |
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{ "Cornsilk", 0xFFF8DC }, |
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{ "Crimson", 0xDC143C }, |
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{ "Cyan", 0x00FFFF }, |
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{ "DarkBlue", 0x00008B }, |
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{ "DarkCyan", 0x008B8B }, |
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{ "DarkGoldenRod", 0xB8860B }, |
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{ "DarkGray", 0xA9A9A9 }, |
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{ "DarkGrey", 0xA9A9A9 }, |
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{ "DarkGreen", 0x006400 }, |
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{ "DarkKhaki", 0xBDB76B }, |
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{ "DarkMagenta", 0x8B008B }, |
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{ "DarkOliveGreen", 0x556B2F }, |
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{ "Darkorange", 0xFF8C00 }, |
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{ "DarkOrchid", 0x9932CC }, |
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{ "DarkRed", 0x8B0000 }, |
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{ "DarkSalmon", 0xE9967A }, |
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{ "DarkSeaGreen", 0x8FBC8F }, |
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{ "DarkSlateBlue", 0x483D8B }, |
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{ "DarkSlateGray", 0x2F4F4F }, |
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{ "DarkSlateGrey", 0x2F4F4F }, |
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{ "DarkTurquoise", 0x00CED1 }, |
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{ "DarkViolet", 0x9400D3 }, |
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{ "DeepPink", 0xFF1493 }, |
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{ "DeepSkyBlue", 0x00BFFF }, |
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{ "DimGray", 0x696969 }, |
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{ "DimGrey", 0x696969 }, |
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{ "DodgerBlue", 0x1E90FF }, |
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{ "FireBrick", 0xB22222 }, |
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{ "FloralWhite", 0xFFFAF0 }, |
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{ "ForestGreen", 0x228B22 }, |
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{ "Fuchsia", 0xFF00FF }, |
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{ "Gainsboro", 0xDCDCDC }, |
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{ "GhostWhite", 0xF8F8FF }, |
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{ "Gold", 0xFFD700 }, |
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{ "GoldenRod", 0xDAA520 }, |
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{ "Gray", 0x808080 }, |
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{ "Grey", 0x808080 }, |
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{ "Green", 0x008000 }, |
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{ "GreenYellow", 0xADFF2F }, |
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{ "HoneyDew", 0xF0FFF0 }, |
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{ "HotPink", 0xFF69B4 }, |
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{ "IndianRed", 0xCD5C5C }, |
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{ "Indigo", 0x4B0082 }, |
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{ "Ivory", 0xFFFFF0 }, |
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{ "Khaki", 0xF0E68C }, |
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{ "Lavender", 0xE6E6FA }, |
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{ "LavenderBlush", 0xFFF0F5 }, |
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{ "LawnGreen", 0x7CFC00 }, |
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{ "LemonChiffon", 0xFFFACD }, |
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{ "LightBlue", 0xADD8E6 }, |
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{ "LightCoral", 0xF08080 }, |
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{ "LightCyan", 0xE0FFFF }, |
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{ "LightGoldenRodYellow", 0xFAFAD2 }, |
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{ "LightGray", 0xD3D3D3 }, |
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{ "LightGrey", 0xD3D3D3 }, |
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{ "LightGreen", 0x90EE90 }, |
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{ "LightPink", 0xFFB6C1 }, |
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{ "LightSalmon", 0xFFA07A }, |
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{ "LightSeaGreen", 0x20B2AA }, |
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{ "LightSkyBlue", 0x87CEFA }, |
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{ "LightSlateGray", 0x778899 }, |
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{ "LightSlateGrey", 0x778899 }, |
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{ "LightSteelBlue", 0xB0C4DE }, |
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{ "LightYellow", 0xFFFFE0 }, |
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{ "Lime", 0x00FF00 }, |
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{ "LimeGreen", 0x32CD32 }, |
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{ "Linen", 0xFAF0E6 }, |
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{ "Magenta", 0xFF00FF }, |
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{ "Maroon", 0x800000 }, |
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{ "MediumAquaMarine", 0x66CDAA }, |
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{ "MediumBlue", 0x0000CD }, |
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{ "MediumOrchid", 0xBA55D3 }, |
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{ "MediumPurple", 0x9370D8 }, |
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{ "MediumSeaGreen", 0x3CB371 }, |
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{ "MediumSlateBlue", 0x7B68EE }, |
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{ "MediumSpringGreen", 0x00FA9A }, |
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{ "MediumTurquoise", 0x48D1CC }, |
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{ "MediumVioletRed", 0xC71585 }, |
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{ "MidnightBlue", 0x191970 }, |
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{ "MintCream", 0xF5FFFA }, |
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{ "MistyRose", 0xFFE4E1 }, |
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{ "Moccasin", 0xFFE4B5 }, |
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{ "NavajoWhite", 0xFFDEAD }, |
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{ "Navy", 0x000080 }, |
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{ "OldLace", 0xFDF5E6 }, |
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{ "Olive", 0x808000 }, |
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{ "OliveDrab", 0x6B8E23 }, |
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{ "Orange", 0xFFA500 }, |
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{ "OrangeRed", 0xFF4500 }, |
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{ "Orchid", 0xDA70D6 }, |
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{ "PaleGoldenRod", 0xEEE8AA }, |
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{ "PaleGreen", 0x98FB98 }, |
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{ "PaleTurquoise", 0xAFEEEE }, |
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{ "PaleVioletRed", 0xD87093 }, |
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{ "PapayaWhip", 0xFFEFD5 }, |
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{ "PeachPuff", 0xFFDAB9 }, |
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{ "Peru", 0xCD853F }, |
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{ "Pink", 0xFFC0CB }, |
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{ "Plum", 0xDDA0DD }, |
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{ "PowderBlue", 0xB0E0E6 }, |
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{ "Purple", 0x800080 }, |
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{ "Red", 0xFF0000 }, |
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{ "RosyBrown", 0xBC8F8F }, |
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{ "RoyalBlue", 0x4169E1 }, |
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{ "SaddleBrown", 0x8B4513 }, |
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{ "Salmon", 0xFA8072 }, |
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{ "SandyBrown", 0xF4A460 }, |
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{ "SeaGreen", 0x2E8B57 }, |
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{ "SeaShell", 0xFFF5EE }, |
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{ "Sienna", 0xA0522D }, |
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{ "Silver", 0xC0C0C0 }, |
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{ "SkyBlue", 0x87CEEB }, |
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{ "SlateBlue", 0x6A5ACD }, |
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{ "SlateGray", 0x708090 }, |
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{ "SlateGrey", 0x708090 }, |
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{ "Snow", 0xFFFAFA }, |
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{ "SpringGreen", 0x00FF7F }, |
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{ "SteelBlue", 0x4682B4 }, |
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{ "Tan", 0xD2B48C }, |
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{ "Teal", 0x008080 }, |
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{ "Thistle", 0xD8BFD8 }, |
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{ "Tomato", 0xFF6347 }, |
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{ "Turquoise", 0x40E0D0 }, |
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{ "Violet", 0xEE82EE }, |
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{ "Wheat", 0xF5DEB3 }, |
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{ "White", 0xFFFFFF }, |
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{ "WhiteSmoke", 0xF5F5F5 }, |
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{ "Yellow", 0xFFFF00 }, |
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{ "YellowGreen", 0x9ACD32 }, |
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{ NULL, 0 } |
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}; |
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static int HandleFontAttributes( xml_reader_t *p_xml_reader, |
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font_stack_t **p_fonts, int i_scale ) |
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{ |
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int rv; |
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char *psz_fontname = NULL; |
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uint32_t i_font_color = 0xffffff; |
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int i_font_alpha = 0; |
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uint32_t i_karaoke_bg_color = 0x00ffffff; |
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int i_font_size = 24; |
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/* Default all attributes to the top font in the stack -- in case not
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* all attributes are specified in the sub-font |
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*/ |
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if( VLC_SUCCESS == PeekFont( p_fonts, |
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&psz_fontname, |
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&i_font_size, |
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&i_font_color, |
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&i_karaoke_bg_color )) |
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{ |
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psz_fontname = strdup( psz_fontname ); |
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i_font_size = i_font_size * 1000 / i_scale; |
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} |
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i_font_alpha = (i_font_color >> 24) & 0xff; |
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i_font_color &= 0x00ffffff; |
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const char *name, *value; |
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while( (name = xml_ReaderNextAttr( p_xml_reader, &value )) != NULL ) |
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{ |
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if( !strcasecmp( "face", name ) ) |
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{ |
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free( psz_fontname ); |
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psz_fontname = strdup( value ); |
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} |
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else if( !strcasecmp( "size", name ) ) |
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{ |
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if( ( *value == '+' ) || ( *value == '-' ) ) |
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{ |
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int i_value = atoi( value ); |
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if( ( i_value >= -5 ) && ( i_value <= 5 ) ) |
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i_font_size += ( i_value * i_font_size ) / 10; |
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else if( i_value < -5 ) |
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i_font_size = - i_value; |
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else if( i_value > 5 ) |
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i_font_size = i_value; |
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} |
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else |
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i_font_size = atoi( value ); |
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} |
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else if( !strcasecmp( "color", name ) ) |
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{ |
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if( value[0] == '#' ) |
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{ |
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i_font_color = strtol( value + 1, NULL, 16 ); |
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i_font_color &= 0x00ffffff; |
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} |
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else |
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{ |
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for( int i = 0; p_html_colors[i].psz_name != NULL; i++ ) |
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{ |
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if( !strncasecmp( value, p_html_colors[i].psz_name, strlen(p_html_colors[i].psz_name) ) ) |
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{ |
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i_font_color = p_html_colors[i].i_value; |
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break; |
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} |
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} |
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} |
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} |
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else if( !strcasecmp( "alpha", name ) && ( value[0] == '#' ) ) |
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{ |
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i_font_alpha = strtol( value + 1, NULL, 16 ); |
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i_font_alpha &= 0xff; |
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} |
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} |
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rv = PushFont( p_fonts, |
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psz_fontname, |
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i_font_size * i_scale / 1000, |
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(i_font_color & 0xffffff) | ((i_font_alpha & 0xff) << 24), |
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i_karaoke_bg_color ); |
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free( psz_fontname ); |
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return rv; |
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} |
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static void SetKaraokeLen( uint32_t i_runs, uint32_t *pi_run_lengths, |
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uint32_t i_k_runs, uint32_t *pi_k_run_lengths ) |
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{ |
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/* Karaoke tags _PRECEDE_ the text they specify a duration
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* for, therefore we are working out the length for the |
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* previous tag, and first time through we have nothing |
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*/ |
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if( pi_k_run_lengths ) |
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{ |
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int i_chars = 0; |
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uint32_t i; |
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/* Work out how many characters are presently in the string
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*/ |
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for( i = 0; i < i_runs; i++ ) |
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i_chars += pi_run_lengths[ i ]; |
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/* Subtract away those we've already allocated to other
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* karaoke tags |
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*/ |
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for( i = 0; i < i_k_runs; i++ ) |
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i_chars -= pi_k_run_lengths[ i ]; |
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pi_k_run_lengths[ i_k_runs - 1 ] = i_chars; |
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} |
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} |
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static void SetupKaraoke( xml_reader_t *p_xml_reader, uint32_t *pi_k_runs, |
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uint32_t **ppi_k_run_lengths, |
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uint32_t **ppi_k_durations ) |
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{ |
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const char *name, *value; |
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while( (name = xml_ReaderNextAttr( p_xml_reader, &value )) != NULL ) |
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{ |
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if( !strcasecmp( "t", name ) ) |
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{ |
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if( ppi_k_durations && ppi_k_run_lengths ) |
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{ |
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(*pi_k_runs)++; |
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if( *ppi_k_durations ) |
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{ |
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*ppi_k_durations = realloc_or_free( *ppi_k_durations, |
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*pi_k_runs * sizeof( uint32_t ) ); |
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} |
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else if( *pi_k_runs == 1 ) |
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{ |
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*ppi_k_durations = (uint32_t *) |
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malloc( *pi_k_runs * sizeof( uint32_t ) ); |
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} |
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if( *ppi_k_run_lengths ) |
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{ |
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*ppi_k_run_lengths = realloc_or_free( *ppi_k_run_lengths, |
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*pi_k_runs * sizeof( uint32_t ) ); |
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} |
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else if( *pi_k_runs == 1 ) |
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{ |
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*ppi_k_run_lengths = (uint32_t *) |
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malloc( *pi_k_runs * sizeof( uint32_t ) ); |
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} |
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if( *ppi_k_durations ) |
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(*ppi_k_durations)[ *pi_k_runs - 1 ] = atoi( value ); |
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if( *ppi_k_run_lengths ) |
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(*ppi_k_run_lengths)[ *pi_k_runs - 1 ] = 0; |
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} |
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} |
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} |
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} |
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|
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/* Turn any multiple-whitespaces into single spaces */ |
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static void HandleWhiteSpace( char *psz_node ) |
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{ |
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char *s = strpbrk( psz_node, "\t\r\n " ); |
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while( s ) |
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{ |
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int i_whitespace = strspn( s, "\t\r\n " ); |
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if( i_whitespace > 1 ) |
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memmove( &s[1], |
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&s[i_whitespace], |
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strlen( s ) - i_whitespace + 1 ); |
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*s++ = ' '; |
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s = strpbrk( s, "\t\r\n " ); |
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} |
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} |
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|
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/* */ |
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static int ProcessNodes( filter_t *p_filter, |
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xml_reader_t *p_xml_reader, |
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text_style_t *p_font_style, |
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UCHAR *psz_text, |
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int *pi_len, |
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|
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uint32_t *pi_runs, |
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uint32_t **ppi_run_lengths, |
|||
TR_FONT_STYLE_PTR **ppp_styles, |
|||
|
|||
bool b_karaoke, |
|||
uint32_t *pi_k_runs, |
|||
uint32_t **ppi_k_run_lengths, |
|||
uint32_t **ppi_k_durations ) |
|||
{ |
|||
int rv = VLC_SUCCESS; |
|||
filter_sys_t *p_sys = p_filter->p_sys; |
|||
UCHAR *psz_text_orig = psz_text; |
|||
font_stack_t *p_fonts = NULL; |
|||
vlc_value_t val; |
|||
int i_scale = 1000; |
|||
|
|||
bool b_italic = false; |
|||
bool b_bold = false; |
|||
bool b_uline = false; |
|||
bool b_through = false; |
|||
|
|||
if( VLC_SUCCESS == var_Get( p_filter, "scale", &val )) |
|||
i_scale = val.i_int; |
|||
|
|||
if( p_font_style ) |
|||
{ |
|||
rv = PushFont( &p_fonts, |
|||
p_font_style->psz_fontname, |
|||
p_font_style->i_font_size * i_scale / 1000, |
|||
(p_font_style->i_font_color & 0xffffff) | |
|||
((p_font_style->i_font_alpha & 0xff) << 24), |
|||
(p_font_style->i_karaoke_background_color & 0xffffff) | |
|||
((p_font_style->i_karaoke_background_alpha & 0xff) << 24)); |
|||
|
|||
if( p_font_style->i_style_flags & STYLE_BOLD ) |
|||
b_bold = true; |
|||
if( p_font_style->i_style_flags & STYLE_ITALIC ) |
|||
b_italic = true; |
|||
if( p_font_style->i_style_flags & STYLE_UNDERLINE ) |
|||
b_uline = true; |
|||
if( p_font_style->i_style_flags & STYLE_STRIKEOUT ) |
|||
b_through = true; |
|||
} |
|||
#ifdef HAVE_STYLES |
|||
else |
|||
{ |
|||
rv = PushFont( &p_fonts, |
|||
TR_DEFAULT_FONT, |
|||
p_sys->i_font_size, |
|||
(p_sys->i_font_color & 0xffffff) | |
|||
(((255-p_sys->i_font_opacity) & 0xff) << 24), |
|||
0x00ffffff ); |
|||
} |
|||
#endif |
|||
|
|||
if( rv != VLC_SUCCESS ) |
|||
return rv; |
|||
|
|||
const char *node; |
|||
int type; |
|||
|
|||
while ( (type = xml_ReaderNextNode( p_xml_reader, &node )) > 0 ) |
|||
{ |
|||
switch ( type ) |
|||
{ |
|||
case XML_READER_ENDELEM: |
|||
if( !strcasecmp( "font", node ) ) |
|||
PopFont( &p_fonts ); |
|||
else if( !strcasecmp( "b", node ) ) |
|||
b_bold = false; |
|||
else if( !strcasecmp( "i", node ) ) |
|||
b_italic = false; |
|||
else if( !strcasecmp( "u", node ) ) |
|||
b_uline = false; |
|||
else if( !strcasecmp( "s", node ) ) |
|||
b_through = false; |
|||
break; |
|||
|
|||
case XML_READER_STARTELEM: |
|||
if( !strcasecmp( "font", node ) ) |
|||
rv = HandleFontAttributes( p_xml_reader, &p_fonts, i_scale ); |
|||
else if( !strcasecmp( "b", node ) ) |
|||
b_bold = true; |
|||
else if( !strcasecmp( "i", node ) ) |
|||
b_italic = true; |
|||
else if( !strcasecmp( "u", node ) ) |
|||
b_uline = true; |
|||
else if( !strcasecmp( "s", node ) ) |
|||
b_through = true; |
|||
else if( !strcasecmp( "br", node ) ) |
|||
{ |
|||
SetupLine( p_filter, "\n", &psz_text, |
|||
pi_runs, ppi_run_lengths, ppp_styles, |
|||
GetStyleFromFontStack( p_sys, |
|||
&p_fonts, |
|||
b_bold, |
|||
b_italic, |
|||
b_uline, |
|||
b_through) ); |
|||
} |
|||
else if( !strcasecmp( "k", node ) ) |
|||
{ |
|||
/* Only valid in karaoke */ |
|||
if( b_karaoke ) |
|||
{ |
|||
if( *pi_k_runs > 0 ) |
|||
SetKaraokeLen( *pi_runs, *ppi_run_lengths, |
|||
*pi_k_runs, *ppi_k_run_lengths ); |
|||
SetupKaraoke( p_xml_reader, pi_k_runs, |
|||
ppi_k_run_lengths, ppi_k_durations ); |
|||
} |
|||
} |
|||
break; |
|||
|
|||
case XML_READER_TEXT: |
|||
{ |
|||
char *psz_node = strdup( node ); |
|||
if( unlikely(!psz_node) ) |
|||
break; |
|||
|
|||
HandleWhiteSpace( psz_node ); |
|||
resolve_xml_special_chars( psz_node ); |
|||
|
|||
SetupLine( p_filter, psz_node, &psz_text, |
|||
pi_runs, ppi_run_lengths, ppp_styles, |
|||
GetStyleFromFontStack( p_sys, |
|||
&p_fonts, |
|||
b_bold, |
|||
b_italic, |
|||
b_uline, |
|||
b_through) ); |
|||
free( psz_node ); |
|||
break; |
|||
} |
|||
} |
|||
if( rv != VLC_SUCCESS ) |
|||
{ |
|||
psz_text = psz_text_orig; |
|||
break; |
|||
} |
|||
} |
|||
if( b_karaoke ) |
|||
{ |
|||
SetKaraokeLen( *pi_runs, *ppi_run_lengths, |
|||
*pi_k_runs, *ppi_k_run_lengths ); |
|||
} |
|||
|
|||
*pi_len = psz_text - psz_text_orig; |
|||
|
|||
while( VLC_SUCCESS == PopFont( &p_fonts ) ); |
|||
|
|||
return rv; |
|||
} |
|||
Loading…
Reference in new issue