mirror of
https://code.videolan.org/videolan/vlc
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334 lines
13 KiB
C
334 lines
13 KiB
C
/*****************************************************************************
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* marq.c : marquee display video plugin for vlc
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*****************************************************************************
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* Copyright (C) 2003-2005 the VideoLAN team
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* $Id$
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*
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* Authors: Mark Moriarty
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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
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <stdlib.h> /* malloc(), free() */
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#include <string.h>
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#include <vlc/vlc.h>
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#include <vlc/vout.h>
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#include "vlc_filter.h"
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#include "vlc_block.h"
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#include "vlc_osd.h"
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int CreateFilter ( vlc_object_t * );
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static void DestroyFilter( vlc_object_t * );
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static subpicture_t *Filter( filter_t *, mtime_t );
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static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data );
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static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
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0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
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0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
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0x00000080, 0x000000FF, 0x0000FFFF};
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static char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
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N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
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N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
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N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
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N_("Aqua") };
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/*****************************************************************************
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* filter_sys_t: marquee filter descriptor
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*****************************************************************************/
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struct filter_sys_t
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{
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int i_xoff, i_yoff; /* offsets for the display string in the video window */
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int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
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int i_timeout;
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char *psz_marquee; /* marquee string */
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text_style_t *p_style; /* font control */
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time_t last_time;
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vlc_bool_t b_need_update;
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};
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#define MSG_TEXT N_("Text")
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#define MSG_LONGTEXT N_("Marquee text to display.")
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#define POSX_TEXT N_("X offset")
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#define POSX_LONGTEXT N_("X offset, from the left screen edge." )
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#define POSY_TEXT N_("Y offset")
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#define POSY_LONGTEXT N_("Y offset, down from the top." )
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#define TIMEOUT_TEXT N_("Timeout")
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#define TIMEOUT_LONGTEXT N_("Number of milliseconds the marquee must remain " \
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"displayed. Default value is " \
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"0 (remains forever).")
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#define OPACITY_TEXT N_("Opacity")
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#define OPACITY_LONGTEXT N_("Opacity (inverse of transparency) of " \
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"overlayed text. 0 = transparent, 255 = totally opaque. " )
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#define SIZE_TEXT N_("Font size, pixels")
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#define SIZE_LONGTEXT N_("Font size, in pixels. Default is -1 (use default " \
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"font size)." )
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#define COLOR_TEXT N_("Color")
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#define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
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"the video. This must be an hexadecimal (like HTML colors). The first two "\
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"chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
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" #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
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#define POS_TEXT N_("Marquee position")
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#define POS_LONGTEXT N_( \
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"You can enforce the marquee position on the video " \
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"(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
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"also use combinations of these values, eg 6 = top-right).")
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static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
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static char *ppsz_pos_descriptions[] =
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{ N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
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N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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vlc_module_begin();
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set_capability( "sub filter", 0 );
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set_shortname( N_("Marquee" ));
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set_callbacks( CreateFilter, DestroyFilter );
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set_category( CAT_VIDEO );
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set_subcategory( SUBCAT_VIDEO_SUBPIC );
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add_string( "marq-marquee", "VLC", NULL, MSG_TEXT, MSG_LONGTEXT,
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VLC_FALSE );
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set_section( N_("Position"), NULL );
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add_integer( "marq-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_TRUE );
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add_integer( "marq-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_TRUE );
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add_integer( "marq-position", 5, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
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set_section( N_("Font"), NULL );
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/* 5 sets the default to top [1] left [4] */
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change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
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add_integer_with_range( "marq-opacity", 255, 0, 255, NULL,
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OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
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add_integer( "marq-color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT,
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VLC_FALSE );
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change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
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add_integer( "marq-size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE );
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set_section( N_("Misc"), NULL );
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add_integer( "marq-timeout", 0, NULL, TIMEOUT_TEXT, TIMEOUT_LONGTEXT,
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VLC_FALSE );
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set_description( _("Marquee display") );
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add_shortcut( "marq" );
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vlc_module_end();
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/*****************************************************************************
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* CreateFilter: allocates marquee video filter
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*****************************************************************************/
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static int CreateFilter( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t *)p_this;
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filter_sys_t *p_sys;
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/* Allocate structure */
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p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
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if( p_sys == NULL )
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{
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msg_Err( p_filter, "out of memory" );
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return VLC_ENOMEM;
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}
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p_sys->p_style = malloc( sizeof( text_style_t ) );
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memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ) );
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p_sys->i_xoff = var_CreateGetInteger( p_filter->p_libvlc , "marq-x" );
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p_sys->i_yoff = var_CreateGetInteger( p_filter->p_libvlc , "marq-y" );
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p_sys->i_timeout = var_CreateGetInteger( p_filter->p_libvlc , "marq-timeout" );
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p_sys->i_pos = var_CreateGetInteger( p_filter->p_libvlc , "marq-position" );
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p_sys->psz_marquee = var_CreateGetString( p_filter->p_libvlc, "marq-marquee" );
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p_sys->p_style->i_font_alpha = 255 - var_CreateGetInteger( p_filter->p_libvlc , "marq-opacity" );
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p_sys->p_style->i_font_color = var_CreateGetInteger( p_filter->p_libvlc , "marq-color" );
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p_sys->p_style->i_font_size = var_CreateGetInteger( p_filter->p_libvlc , "marq-size" );
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var_AddCallback( p_filter->p_libvlc, "marq-x", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-y", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-marquee", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-timeout", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-position", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-color", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-opacity", MarqueeCallback, p_sys );
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var_AddCallback( p_filter->p_libvlc, "marq-size", MarqueeCallback, p_sys );
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/* Misc init */
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p_filter->pf_sub_filter = Filter;
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p_sys->last_time = ((time_t)-1);
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p_sys->b_need_update = VLC_TRUE;
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* DestroyFilter: destroy marquee video filter
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*****************************************************************************/
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static void DestroyFilter( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t *)p_this;
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filter_sys_t *p_sys = p_filter->p_sys;
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if( p_sys->p_style ) free( p_sys->p_style );
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if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
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free( p_sys );
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/* Delete the marquee variables */
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var_DelCallback( p_filter->p_libvlc, "marq-x", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-y", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-marquee", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-timeout", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-position", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-color", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-opacity", MarqueeCallback, p_sys );
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var_DelCallback( p_filter->p_libvlc, "marq-size", MarqueeCallback, p_sys );
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var_Destroy( p_filter->p_libvlc , "marq-marquee" );
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var_Destroy( p_filter->p_libvlc , "marq-x" );
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var_Destroy( p_filter->p_libvlc , "marq-y" );
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var_Destroy( p_filter->p_libvlc , "marq-timeout" );
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var_Destroy( p_filter->p_libvlc , "marq-position" );
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var_Destroy( p_filter->p_libvlc , "marq-color");
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var_Destroy( p_filter->p_libvlc , "marq-opacity");
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var_Destroy( p_filter->p_libvlc , "marq-size");
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}
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/****************************************************************************
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* Filter: the whole thing
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****************************************************************************
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* This function outputs subpictures at regular time intervals.
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****************************************************************************/
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static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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subpicture_t *p_spu;
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video_format_t fmt;
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time_t t;
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if( p_sys->last_time == time( NULL ) )
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{
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return NULL;
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}
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if( p_sys->b_need_update == VLC_FALSE )
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{
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return NULL;
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}
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p_spu = p_filter->pf_sub_buffer_new( p_filter );
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if( !p_spu ) return NULL;
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memset( &fmt, 0, sizeof(video_format_t) );
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fmt.i_chroma = VLC_FOURCC('T','E','X','T');
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fmt.i_aspect = 0;
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fmt.i_width = fmt.i_height = 0;
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fmt.i_x_offset = 0;
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fmt.i_y_offset = 0;
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p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
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if( !p_spu->p_region )
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{
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p_filter->pf_sub_buffer_del( p_filter, p_spu );
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return NULL;
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}
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t = p_sys->last_time = time( NULL );
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p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
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p_spu->i_start = date;
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p_spu->i_stop = p_sys->i_timeout == 0 ? 0 : date + p_sys->i_timeout * 1000;
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p_spu->b_ephemer = VLC_TRUE;
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/* where to locate the string: */
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if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
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{ /* set to one of the 9 relative locations */
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p_spu->i_flags = p_sys->i_pos;
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p_spu->i_x = 0;
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p_spu->i_y = 0;
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p_spu->b_absolute = VLC_FALSE;
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}
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else
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{ /* set to an absolute xy, referenced to upper left corner */
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p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
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p_spu->i_x = p_sys->i_xoff;
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p_spu->i_y = p_sys->i_yoff;
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p_spu->b_absolute = VLC_TRUE;
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}
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p_spu->p_region->p_style = p_sys->p_style;
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p_sys->b_need_update = VLC_FALSE;
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return p_spu;
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}
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/**********************************************************************
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* Callback to update params on the fly
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**********************************************************************/
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static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data )
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{
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filter_sys_t *p_sys = (filter_sys_t *) p_data;
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if( !strncmp( psz_var, "marq-marquee", 7 ) )
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{
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if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
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p_sys->psz_marquee = strdup( newval.psz_string );
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}
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else if ( !strncmp( psz_var, "marq-x", 6 ) )
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{
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p_sys->i_xoff = newval.i_int;
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}
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else if ( !strncmp( psz_var, "marq-y", 6 ) )
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{
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p_sys->i_yoff = newval.i_int;
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}
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else if ( !strncmp( psz_var, "marq-color", 8 ) ) /* "marq-col" */
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{
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p_sys->p_style->i_font_color = newval.i_int;
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}
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else if ( !strncmp( psz_var, "marq-opacity", 8 ) ) /* "marq-opa" */
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{
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p_sys->p_style->i_font_alpha = 255 - newval.i_int;
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}
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else if ( !strncmp( psz_var, "marq-size", 6 ) )
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{
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p_sys->p_style->i_font_size = newval.i_int;
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}
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else if ( !strncmp( psz_var, "marq-timeout", 12 ) )
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{
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p_sys->i_timeout = newval.i_int;
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}
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else if ( !strncmp( psz_var, "marq-position", 8 ) )
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/* willing to accept a match against marq-pos */
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{
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p_sys->i_pos = newval.i_int;
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p_sys->i_xoff = -1; /* force to relative positioning */
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}
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p_sys->b_need_update = VLC_TRUE;
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return VLC_SUCCESS;
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}
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