/*****************************************************************************
- * video_text.c : text manipulation functions
+ * video_text.c : OSD text manipulation functions
*****************************************************************************
- * Copyright (C) 1999-2007 the VideoLAN team
+ * Copyright (C) 1999-2010 the VideoLAN team
* $Id$
*
* Author: Sigmund Augdal Helberg <dnumgis@videolan.org>
+ * Laurent Aimar <fenrir _AT_ videolan _DOT_ 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <assert.h>
+
+#include <vlc_common.h>
#include <vlc_vout.h>
-#include <vlc_block.h>
-#include <vlc_filter.h>
-#include <vlc_osd.h>
-
-/**
- * \brief Show text on the video for some time
- * \param p_vout pointer to the vout the text is to be showed on
- * \param i_channel Subpicture channel
- * \param psz_string The text to be shown
- * \param p_style Pointer to a struct with text style info
- * \param i_flags flags for alignment and such
- * \param i_hmargin horizontal margin in pixels
- * \param i_vmargin vertical margin in pixels
- * \param i_duration Amount of time the text is to be shown.
- */
-int vout_ShowTextRelative( vout_thread_t *p_vout, int i_channel,
- char *psz_string, text_style_t *p_style,
- int i_flags, int i_hmargin, int i_vmargin,
- mtime_t i_duration )
+#include <vlc_vout_osd.h>
+
+struct subpicture_updater_sys_t {
+ int position;
+ char *text;
+};
+
+static int OSDTextValidate(subpicture_t *subpic,
+ bool has_src_changed, const video_format_t *fmt_src,
+ bool has_dst_changed, const video_format_t *fmt_dst,
+ mtime_t ts)
{
- mtime_t i_now = mdate();
+ VLC_UNUSED(subpic); VLC_UNUSED(ts); VLC_UNUSED(fmt_src);
+ VLC_UNUSED(has_dst_changed); VLC_UNUSED(fmt_dst);
- return vout_ShowTextAbsolute( p_vout, i_channel, psz_string,
- p_style, i_flags, i_hmargin, i_vmargin,
- i_now, i_now + i_duration );
+ if( !has_src_changed && !has_dst_changed)
+ return VLC_SUCCESS;
+ return VLC_EGENERIC;
}
-/**
- * \brief Show text on the video from a given start date to a given end date
- * \param p_vout pointer to the vout the text is to be showed on
- * \param i_channel Subpicture channel
- * \param psz_string The text to be shown
- * \param p_style Pointer to a struct with text style info
- * \param i_flags flags for alignment and such
- * \param i_hmargin horizontal margin in pixels
- * \param i_vmargin vertical margin in pixels
- * \param i_start the time when this string is to appear on the video
- * \param i_stop the time when this string should stop to be displayed
- * if this is 0 the string will be shown untill the next string
- * is about to be shown
- */
-int vout_ShowTextAbsolute( vout_thread_t *p_vout, int i_channel,
- const char *psz_string, text_style_t *p_style,
- int i_flags, int i_hmargin, int i_vmargin,
- mtime_t i_start, mtime_t i_stop )
+static void OSDTextUpdate(subpicture_t *subpic,
+ const video_format_t *fmt_src,
+ const video_format_t *fmt_dst,
+ mtime_t ts)
{
- subpicture_t *p_spu;
- video_format_t fmt;
- (void)p_style; // FIXME: <-- why ask for this if it's unused?!?
-
- if( !psz_string ) return VLC_EGENERIC;
-
- p_spu = spu_CreateSubpicture( p_vout->p_spu );
- if( !p_spu ) return VLC_EGENERIC;
-
- /* Create a new subpicture region */
- memset( &fmt, 0, sizeof(video_format_t) );
- fmt.i_chroma = VLC_FOURCC('T','E','X','T');
- fmt.i_aspect = 0;
- fmt.i_width = fmt.i_height = 0;
- fmt.i_x_offset = fmt.i_y_offset = 0;
- p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
- if( !p_spu->p_region )
- {
- msg_Err( p_vout, "cannot allocate SPU region" );
- spu_DestroySubpicture( p_vout->p_spu, p_spu );
- return VLC_EGENERIC;
- }
+ subpicture_updater_sys_t *sys = subpic->updater.p_sys;
+ VLC_UNUSED(fmt_dst); VLC_UNUSED(ts);
- p_spu->p_region->psz_text = strdup( psz_string );
- p_spu->i_start = i_start;
- p_spu->i_stop = i_stop;
- p_spu->b_ephemer = VLC_TRUE;
- p_spu->b_absolute = VLC_FALSE;
+ subpic->i_original_picture_width = fmt_src->i_width;
+ subpic->i_original_picture_height = fmt_src->i_height;
- p_spu->i_x = i_hmargin;
- p_spu->i_y = i_vmargin;
- p_spu->i_flags = i_flags;
- p_spu->i_channel = i_channel;
+ video_format_t fmt;
+ video_format_Init( &fmt, VLC_CODEC_TEXT);
+ fmt.i_sar_num = 0;
+ fmt.i_sar_den = 1;
+
+ subpicture_region_t *r = subpic->p_region = subpicture_region_New(&fmt);
+ if (!r)
+ return;
+
+ r->psz_text = strdup(sys->text);
+ r->i_align = sys->position;
+ r->i_x = 30 + fmt_src->i_width
+ - fmt_src->i_visible_width
+ - fmt_src->i_x_offset;
+ r->i_y = 20 + fmt_src->i_y_offset;
+}
- spu_DisplaySubpicture( p_vout->p_spu, p_spu );
+static void OSDTextDestroy(subpicture_t *subpic)
+{
+ subpicture_updater_sys_t *sys = subpic->updater.p_sys;
- return VLC_SUCCESS;
+ free(sys->text);
+ free(sys);
}
-
-/**
- * \brief Write an informative message at the default location,
- * for the default duration and only if the OSD option is enabled.
- * \param p_caller The object that called the function.
- * \param i_channel Subpicture channel
- * \param psz_format printf style formatting
- **/
-void __vout_OSDMessage( vlc_object_t *p_caller, int i_channel,
- const char *psz_format, ... )
+void vout_OSDText(vout_thread_t *vout, int channel,
+ int position, mtime_t duration, const char *text)
{
- vout_thread_t *p_vout;
- char *psz_string;
- va_list args;
-
- if( !config_GetInt( p_caller, "osd" ) ) return;
+ assert( (position & ~SUBPICTURE_ALIGN_MASK) == 0);
+ if (!var_InheritBool(vout, "osd") || duration <= 0)
+ return;
+
+ subpicture_updater_sys_t *sys = malloc(sizeof(*sys));
+ if (!sys)
+ return;
+ sys->position = position;
+ sys->text = strdup(text);
+
+ subpicture_updater_t updater = {
+ .pf_validate = OSDTextValidate,
+ .pf_update = OSDTextUpdate,
+ .pf_destroy = OSDTextDestroy,
+ .p_sys = sys,
+ };
+ subpicture_t *subpic = subpicture_New(&updater);
+ if (!subpic) {
+ free(sys->text);
+ free(sys);
+ return;
+ }
- p_vout = vlc_object_find( p_caller, VLC_OBJECT_VOUT, FIND_ANYWHERE );
- if( p_vout )
- {
- va_start( args, psz_format );
- vasprintf( &psz_string, psz_format, args );
+ subpic->i_channel = channel;
+ subpic->i_start = mdate();
+ subpic->i_stop = subpic->i_start + duration;
+ subpic->b_ephemer = true;
+ subpic->b_absolute = false;
+ subpic->b_fade = true;
- vout_ShowTextRelative( p_vout, i_channel, psz_string, NULL,
- OSD_ALIGN_TOP|OSD_ALIGN_RIGHT,
- 30 + p_vout->fmt_in.i_width
- - p_vout->fmt_in.i_visible_width
- - p_vout->fmt_in.i_x_offset,
- 20 + p_vout->fmt_in.i_y_offset, 1000000 );
+ vout_PutSubpicture(vout, subpic);
+}
- vlc_object_release( p_vout );
- free( psz_string );
- va_end( args );
+void vout_OSDMessage(vout_thread_t *vout, int channel, const char *format, ...)
+{
+ va_list args;
+ va_start(args, format);
+
+ char *string;
+ if (vasprintf(&string, format, args) != -1) {
+ vout_OSDText(vout, channel,
+ SUBPICTURE_ALIGN_TOP|SUBPICTURE_ALIGN_RIGHT, 1000000,
+ string);
+ free(string);
}
+ va_end(args);
}
+
projects / vlc / blobdiff