Moved generic subpicture code to its own file.

include/vlc_subpicture.h

@@ -195,6 +195,12 @@ VLC_EXPORT( void,  subpicture_Delete, ( subpicture_t *p_subpic ) );
  */
 VLC_EXPORT( subpicture_t *, subpicture_NewFromPicture, ( vlc_object_t *, picture_t *, vlc_fourcc_t i_chroma ) );
 
+/**
+ * This function will update the content of a subpicture created with
+ * a non NULL subpicture_updater_t.
+ */
+VLC_EXPORT( void, subpicture_Update, ( subpicture_t *, const video_format_t *src, const video_format_t *, mtime_t ) );
+
 /**@}*/
 
 #endif /* _VLC_VIDEO_H */

src/Makefile.am

@@ -457,6 +457,8 @@ SOURCES_libvlc_common = \
 	misc/http_auth.c \
 	misc/sql.c \
 	misc/text_style.c \
+	misc/subpicture.c \
+	misc/subpicture.h \
 	$(NULL)
 
 SOURCES_libvlc_httpd = \

src/misc/subpicture.c

+/*****************************************************************************
+ * subpicture.c: Subpicture functions
+ *****************************************************************************
+ * Copyright (C) 2010 Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
+ * $Id$
+ *
+ * Authors: 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <assert.h>
+
+#include <vlc_common.h>
+#include <vlc_image.h>
+#include <vlc_subpicture.h>
+#include "subpicture.h"
+
+struct subpicture_private_t
+{
+    video_format_t src;
+    video_format_t dst;
+};
+
+subpicture_t *subpicture_New( const subpicture_updater_t *p_upd )
+{
+    subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
+    if( !p_subpic )
+        return NULL;
+
+    p_subpic->i_order    = 0;
+    p_subpic->b_absolute = true;
+    p_subpic->b_fade     = false;
+    p_subpic->b_subtitle = false;
+    p_subpic->i_alpha    = 0xFF;
+    p_subpic->p_region   = NULL;
+
+    if( p_upd )
+    {
+        subpicture_private_t *p_private = malloc( sizeof(*p_private) );
+        if( !p_private )
+        {
+            free( p_subpic );
+            return NULL;
+        }
+        video_format_Init( &p_private->src, 0 );
+        video_format_Init( &p_private->dst, 0 );
+
+        p_subpic->updater   = *p_upd;
+        p_subpic->p_private = p_private;
+    }
+    else
+    {
+        p_subpic->p_private = NULL;
+
+        p_subpic->updater.pf_validate = NULL;
+        p_subpic->updater.pf_update   = NULL;
+        p_subpic->updater.pf_destroy  = NULL;
+        p_subpic->updater.p_sys       = NULL;
+    }
+    return p_subpic;
+}
+
+void subpicture_Delete( subpicture_t *p_subpic )
+{
+    subpicture_region_ChainDelete( p_subpic->p_region );
+    p_subpic->p_region = NULL;
+
+    if( p_subpic->updater.pf_destroy )
+        p_subpic->updater.pf_destroy( p_subpic );
+
+    free( p_subpic->p_private );
+    free( p_subpic );
+}
+
+subpicture_t *subpicture_NewFromPicture( vlc_object_t *p_obj,
+                                         picture_t *p_picture, vlc_fourcc_t i_chroma )
+{
+    /* */
+    video_format_t fmt_in = p_picture->format;
+
+    /* */
+    video_format_t fmt_out;
+    fmt_out = fmt_in;
+    fmt_out.i_chroma = i_chroma;
+
+    /* */
+    image_handler_t *p_image = image_HandlerCreate( p_obj );
+    if( !p_image )
+        return NULL;
+
+    picture_t *p_pip = image_Convert( p_image, p_picture, &fmt_in, &fmt_out );
+
+    image_HandlerDelete( p_image );
+
+    if( !p_pip )
+        return NULL;
+
+    subpicture_t *p_subpic = subpicture_New( NULL );
+    if( !p_subpic )
+    {
+         picture_Release( p_pip );
+         return NULL;
+    }
+
+    p_subpic->i_original_picture_width  = fmt_out.i_width;
+    p_subpic->i_original_picture_height = fmt_out.i_height;
+
+    fmt_out.i_sar_num =
+    fmt_out.i_sar_den = 0;
+
+    p_subpic->p_region = subpicture_region_New( &fmt_out );
+    if( p_subpic->p_region )
+    {
+        picture_Release( p_subpic->p_region->p_picture );
+        p_subpic->p_region->p_picture = p_pip;
+    }
+    else
+    {
+        picture_Release( p_pip );
+    }
+    return p_subpic;
+}
+
+void subpicture_Update( subpicture_t *p_subpicture,
+                        const video_format_t *p_fmt_src,
+                        const video_format_t *p_fmt_dst,
+                        mtime_t i_ts )
+{
+    subpicture_updater_t *p_upd = &p_subpicture->updater;
+    subpicture_private_t *p_private = p_subpicture->p_private;
+
+    if( !p_upd->pf_validate )
+        return;
+    if( !p_upd->pf_validate( p_subpicture,
+                          !video_format_IsSimilar( p_fmt_src,
+                                                   &p_private->src ), p_fmt_src,
+                          !video_format_IsSimilar( p_fmt_dst,
+                                                   &p_private->dst ), p_fmt_dst,
+                          i_ts ) )
+        return;
+
+    subpicture_region_ChainDelete( p_subpicture->p_region );
+    p_subpicture->p_region = NULL;
+
+    p_upd->pf_update( p_subpicture, p_fmt_src, p_fmt_dst, i_ts );
+
+    video_format_Clean( &p_private->src );
+    video_format_Clean( &p_private->dst );
+
+    video_format_Copy( &p_private->src, p_fmt_src );
+    video_format_Copy( &p_private->dst, p_fmt_dst );
+}
+
+
+subpicture_region_private_t *subpicture_region_private_New( video_format_t *p_fmt )
+{
+    subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
+
+    if( !p_private )
+        return NULL;
+
+    p_private->fmt = *p_fmt;
+    if( p_fmt->p_palette )
+    {
+        p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
+        if( p_private->fmt.p_palette )
+            *p_private->fmt.p_palette = *p_fmt->p_palette;
+    }
+    p_private->p_picture = NULL;
+
+    return p_private;
+}
+
+void subpicture_region_private_Delete( subpicture_region_private_t *p_private )
+{
+    if( p_private->p_picture )
+        picture_Release( p_private->p_picture );
+    free( p_private->fmt.p_palette );
+    free( p_private );
+}
+
+subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
+{
+    subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
+    if( !p_region )
+        return NULL;
+
+    p_region->fmt = *p_fmt;
+    p_region->fmt.p_palette = NULL;
+    if( p_fmt->i_chroma == VLC_CODEC_YUVP )
+    {
+        p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
+        if( p_fmt->p_palette )
+            *p_region->fmt.p_palette = *p_fmt->p_palette;
+    }
+    p_region->i_alpha = 0xff;
+    p_region->p_next = NULL;
+    p_region->p_private = NULL;
+    p_region->psz_text = NULL;
+    p_region->p_style = NULL;
+    p_region->p_picture = NULL;
+
+    if( p_fmt->i_chroma == VLC_CODEC_TEXT )
+        return p_region;
+
+    p_region->p_picture = picture_NewFromFormat( p_fmt );
+    if( !p_region->p_picture )
+    {
+        free( p_region->fmt.p_palette );
+        free( p_region );
+        return NULL;
+    }
+
+    return p_region;
+}
+
+void subpicture_region_Delete( subpicture_region_t *p_region )
+{
+    if( !p_region )
+        return;
+
+    if( p_region->p_private )
+        subpicture_region_private_Delete( p_region->p_private );
+
+    if( p_region->p_picture )
+        picture_Release( p_region->p_picture );
+
+    free( p_region->fmt.p_palette );
+
+    free( p_region->psz_text );
+    free( p_region->psz_html );
+    if( p_region->p_style )
+        text_style_Delete( p_region->p_style );
+    free( p_region );
+}
+
+void subpicture_region_ChainDelete( subpicture_region_t *p_head )
+{
+    while( p_head )
+    {
+        subpicture_region_t *p_next = p_head->p_next;
+
+        subpicture_region_Delete( p_head );
+
+        p_head = p_next;
+    }
+}
+

src/misc/subpicture.h

+/*****************************************************************************
+ * subpicture.h: Private subpicture definitions
+ *****************************************************************************
+ * Copyright (C) 2010 Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
+ * $Id$
+ *
+ * Authors: 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+struct subpicture_region_private_t {
+    video_format_t fmt;
+    picture_t      *p_picture;
+};
+
+subpicture_region_private_t *subpicture_region_private_New(video_format_t *);
+void subpicture_region_private_Delete(subpicture_region_private_t *);
+