1 /*****************************************************************************
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2 * marq.c : marquee display video plugin for vlc
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3 *****************************************************************************
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4 * Copyright (C) 2003-2005 VideoLAN
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5 * $Id: time.c 8751 2004-09-20 21:51:41Z gbazin $
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7 * Authors: Mark Moriarty
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9 * This program is free software; you can redistribute it and/or modify
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10 * it under the terms of the GNU General Public License as published by
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11 * the Free Software Foundation; either version 2 of the License, or
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12 * (at your option) any later version.
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14 * This program is distributed in the hope that it will be useful,
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 * GNU General Public License for more details.
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19 * You should have received a copy of the GNU General Public License
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20 * along with this program; if not, write to the Free Software
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21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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22 *****************************************************************************/
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24 /*****************************************************************************
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26 *****************************************************************************/
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27 #include <stdlib.h> /* malloc(), free() */
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30 #include <vlc/vlc.h>
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31 #include <vlc/vout.h>
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33 #include "vlc_filter.h"
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34 #include "vlc_block.h"
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37 /*****************************************************************************
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39 *****************************************************************************/
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40 static int CreateFilter ( vlc_object_t * );
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41 static void DestroyFilter( vlc_object_t * );
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42 static subpicture_t *Filter( filter_t *, mtime_t );
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45 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
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46 vlc_value_t oldval, vlc_value_t newval,
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48 static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
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49 0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
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50 0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
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51 0x00000080, 0x000000FF, 0x0000FFFF};
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52 static char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
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53 N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
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54 N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
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55 N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
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58 /*****************************************************************************
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59 * filter_sys_t: marquee filter descriptor
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60 *****************************************************************************/
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63 int i_xoff, i_yoff; /* offsets for the display string in the video window */
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64 int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
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67 char *psz_marquee; /* marquee string */
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69 int i_font_color, i_font_opacity; /* font color control */
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72 vlc_bool_t b_absolute; /* position control, relative vs. absolute */
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74 vlc_bool_t b_need_update;
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77 #define MSG_TEXT N_("Marquee text")
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78 #define MSG_LONGTEXT N_("Marquee text to display")
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79 #define POSX_TEXT N_("X offset, from left")
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80 #define POSX_LONGTEXT N_("X offset, from the left screen edge" )
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81 #define POSY_TEXT N_("Y offset, from the top")
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82 #define POSY_LONGTEXT N_("Y offset, down from the top" )
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83 #define TIMEOUT_TEXT N_("Marquee timeout")
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84 #define TIMEOUT_LONGTEXT N_("Defines the time the marquee must remain " \
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85 "displayed, in milliseconds. Default value is " \
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86 "0 (remain forever).")
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87 #define OPACITY_TEXT N_("Opacity, -1..255")
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88 #define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of overlay text. " \
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89 "-1 = use freetype-opacity, 0 = transparent, 255 = totally opaque. " )
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90 #define COLOR_TEXT N_("Text Default Color")
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91 #define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, hexadecimal." \
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92 "-1 = use freetype-color, #000000 = all colors off, " \
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93 "0xFF0000 = just Red, 0xFFFFFF = all color on [White]" )
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95 #define POS_TEXT N_("Marquee position")
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96 #define POS_LONGTEXT N_( \
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97 "You can enforce the marquee position on the video " \
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98 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
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99 "also use combinations of these values by adding them).")
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101 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
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102 static char *ppsz_pos_descriptions[] =
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103 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
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104 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
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106 /*****************************************************************************
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107 * Module descriptor
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108 *****************************************************************************/
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109 vlc_module_begin();
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110 set_capability( "sub filter", 0 );
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111 set_shortname( N_("Marquee" ));
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112 set_callbacks( CreateFilter, DestroyFilter );
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113 set_category( CAT_VIDEO );
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114 set_subcategory( SUBCAT_VIDEO_SUBPIC );
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115 add_string( "marq-marquee", "Marquee", NULL, MSG_TEXT, MSG_LONGTEXT, VLC_FALSE );
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116 add_integer( "marq-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
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117 add_integer( "marq-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
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118 add_integer( "marq-timeout", 0, NULL, TIMEOUT_TEXT, TIMEOUT_LONGTEXT,
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120 add_integer( "marq-position", 5, NULL, POS_TEXT, POS_LONGTEXT, VLC_TRUE );
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121 /* 5 sets the default to top [1] left [4] */
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122 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
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123 add_integer_with_range( "marq-opacity", -1, -1, 255, NULL,
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124 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
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125 add_integer( "marq-color", -1, NULL, COLOR_TEXT, COLOR_LONGTEXT, VLC_TRUE );
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126 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
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128 set_description( _("Marquee display sub filter") );
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129 add_shortcut( "marq" );
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132 /*****************************************************************************
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133 * CreateFilter: allocates marquee video filter
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134 *****************************************************************************/
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135 static int CreateFilter( vlc_object_t *p_this )
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137 filter_t *p_filter = (filter_t *)p_this;
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138 filter_sys_t *p_sys;
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139 vlc_object_t *p_input;
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142 /* Allocate structure */
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143 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
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144 if( p_sys == NULL )
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146 msg_Err( p_filter, "out of memory" );
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150 /* Hook used for callback variables */
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151 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );
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157 p_sys->i_xoff = var_CreateGetInteger( p_input->p_libvlc , "marq-x" );
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158 p_sys->i_yoff = var_CreateGetInteger( p_input->p_libvlc , "marq-y" );
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159 p_sys->i_timeout = var_CreateGetInteger( p_input->p_libvlc , "marq-timeout" );
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160 p_sys->i_pos = var_CreateGetInteger( p_input->p_libvlc , "marq-position" );
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161 p_sys->psz_marquee = var_CreateGetString( p_input->p_libvlc, "marq-marquee" );
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162 var_Create( p_input->p_libvlc, "marq-opacity", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
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163 p_sys->i_font_opacity = var_CreateGetInteger( p_input->p_libvlc , "marq-opacity" );
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164 p_sys->i_font_color = var_CreateGetInteger( p_input->p_libvlc , "marq-color" );
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166 var_AddCallback( p_input->p_libvlc, "marq-x", MarqueeCallback, p_sys );
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167 var_AddCallback( p_input->p_libvlc, "marq-y", MarqueeCallback, p_sys );
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168 var_AddCallback( p_input->p_libvlc, "marq-marquee", MarqueeCallback, p_sys );
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169 var_AddCallback( p_input->p_libvlc, "marq-timeout", MarqueeCallback, p_sys );
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170 var_AddCallback( p_input->p_libvlc, "marq-position", MarqueeCallback, p_sys );
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171 var_AddCallback( p_input->p_libvlc, "marq-color", MarqueeCallback, p_sys );
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172 var_AddCallback( p_input->p_libvlc, "marq-opacity", MarqueeCallback, p_sys );
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174 vlc_object_release( p_input );
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178 p_filter->pf_sub_filter = Filter;
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179 p_sys->last_time = ((time_t)-1);
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180 p_sys->b_need_update = VLC_TRUE;
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182 return VLC_SUCCESS;
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184 /*****************************************************************************
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185 * DestroyFilter: destroy marquee video filter
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186 *****************************************************************************/
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187 static void DestroyFilter( vlc_object_t *p_this )
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189 filter_t *p_filter = (filter_t *)p_this;
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190 filter_sys_t *p_sys = p_filter->p_sys;
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191 vlc_object_t *p_input;
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193 if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
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196 /* Delete the marquee variables */
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197 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );
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202 var_Destroy( p_input->p_libvlc , "marq-marquee" );
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203 var_Destroy( p_input->p_libvlc , "marq-x" );
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204 var_Destroy( p_input->p_libvlc , "marq-y" );
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205 var_Destroy( p_input->p_libvlc , "marq-timeout" );
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206 var_Destroy( p_input->p_libvlc , "marq-position" );
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207 var_Destroy( p_input->p_libvlc , "marq-color");
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208 var_Destroy( p_input->p_libvlc , "marq-opacity");
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209 vlc_object_release( p_input );
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212 /****************************************************************************
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213 * Filter: the whole thing
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214 ****************************************************************************
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215 * This function outputs subpictures at regular time intervals.
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216 ****************************************************************************/
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217 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
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219 filter_sys_t *p_sys = p_filter->p_sys;
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220 subpicture_t *p_spu;
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221 video_format_t fmt;
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224 if( p_sys->last_time == time( NULL ) )
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229 if( p_sys->b_need_update == VLC_FALSE )
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234 p_sys->b_absolute = VLC_TRUE;
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235 if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
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237 p_sys->b_absolute = VLC_FALSE;
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240 p_spu = p_filter->pf_sub_buffer_new( p_filter );
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241 if( !p_spu ) return NULL;
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243 p_spu->b_absolute = p_sys->b_absolute;
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244 memset( &fmt, 0, sizeof(video_format_t) );
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245 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
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247 fmt.i_width = fmt.i_height = 0;
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248 fmt.i_x_offset = 0;
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249 fmt.i_y_offset = 0;
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250 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
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251 if( !p_spu->p_region )
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253 p_filter->pf_sub_buffer_del( p_filter, p_spu );
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257 t = p_sys->last_time = time( NULL );
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259 p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
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260 p_spu->i_start = date;
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261 p_spu->i_stop = p_sys->i_timeout == 0 ? 0 : date + p_sys->i_timeout * 1000;
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262 p_spu->b_ephemer = VLC_TRUE;
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263 p_spu->i_x = p_sys->i_xoff;
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264 p_spu->i_y = p_sys->i_yoff;
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265 p_spu->p_region->i_font_color = p_sys->i_font_color;
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266 p_spu->p_region->i_font_opacity = p_sys->i_font_opacity;;
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268 p_spu->i_flags = p_sys->i_pos;
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270 p_sys->b_need_update = VLC_FALSE;
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274 /**********************************************************************
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275 * Callback to update params on the fly
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276 **********************************************************************/
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277 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
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278 vlc_value_t oldval, vlc_value_t newval,
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281 filter_sys_t *p_sys = (filter_sys_t *) p_data;
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283 if( !strncmp( psz_var, "marq-marquee", 7 ) )
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285 if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
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286 p_sys->psz_marquee = strdup( newval.psz_string );
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288 else if ( !strncmp( psz_var, "marq-x", 6 ) )
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290 p_sys->i_xoff = newval.i_int;
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292 else if ( !strncmp( psz_var, "marq-y", 6 ) )
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294 p_sys->i_yoff = newval.i_int;
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296 else if ( !strncmp( psz_var, "marq-color", 8 ) ) /* "marq-col" */
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298 p_sys->i_font_color = newval.i_int;
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300 else if ( !strncmp( psz_var, "marq-opacity", 8 ) ) /* "marq-opa" */
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302 p_sys->i_font_opacity = newval.i_int;
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304 else if ( !strncmp( psz_var, "marq-timeout", 12 ) )
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306 p_sys->i_timeout = newval.i_int;
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308 else if ( !strncmp( psz_var, "marq-position", 8 ) )
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309 /* willing to accept a match against marq-pos */
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311 p_sys->i_pos = newval.i_int;
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312 p_sys->i_xoff = -1; /* force to relative positioning */
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314 p_sys->b_need_update = VLC_TRUE;
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315 return VLC_SUCCESS;
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