subpicture: rename confusing option

background is always rendered on region depending on renderer

include/vlc_subpicture.h

@@ -65,7 +65,7 @@ struct subpicture_region_t
     int             i_alpha;                               /**< transparency */
 
     text_segment_t  *p_text;         /**< subtitle text, made of a list of segments */
-    bool            b_renderbg;      /**< render black background under text */
+    bool            b_noregionbg;    /**< render background under text only */
     bool            b_gridmode;      /** if the decoder sends row/cols based output */
 
     subpicture_region_t *p_next;                /**< next region in the list */

modules/codec/cc.c

@@ -424,7 +424,7 @@ static subpicture_t *Subtitle( decoder_t *p_dec, text_segment_t *p_segments, mti
        region itself gets aligned, but the text inside it does not */
     p_spu_sys->align = SUBPICTURE_ALIGN_LEAVETEXT;
     p_spu_sys->p_segments = p_segments;
-    p_spu_sys->renderbg = p_dec->p_sys->b_opaque;
+    p_spu_sys->noregionbg = p_dec->p_sys->b_opaque;
     p_spu_sys->gridmode = true;
     /* Set style defaults (will be added to segments if none set) */
     p_spu_sys->p_default_style->i_style_flags |= STYLE_MONOSPACED;

modules/codec/substext.h

@@ -11,7 +11,7 @@ struct subpicture_updater_sys_t {
     bool is_fixed;
     int  fixed_width;
     int  fixed_height;
-    bool renderbg;
+    bool noregionbg;
     bool gridmode;
 
     /* styling */
@@ -66,7 +66,7 @@ static void SubpictureTextUpdate(subpicture_t *subpic,
 
     r->p_text = sys->p_segments;
     r->i_align  = sys->align;
-    r->b_renderbg = sys->renderbg;
+    r->b_noregionbg = sys->noregionbg;
     r->b_gridmode = sys->gridmode;
     if (!sys->is_fixed) {
         const float margin_ratio = 0.04;

modules/codec/zvbi.c

@@ -444,7 +444,7 @@ static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
         p_spu_sys->p_segments = text_segment_New( &p_text[offset] );
 
         p_spu_sys->align = i_align;
-        p_spu_sys->renderbg = b_opaque;
+        p_spu_sys->noregionbg = b_opaque;
 
 #ifdef ZVBI_DEBUG
         msg_Info( p_dec, "page %x-%x(%d)\n\"%s\"", p_page.pgno, p_page.subno, i_total, &p_text[offset] );

modules/text_renderer/freetype.c

@@ -793,7 +793,7 @@ static inline int RenderAXYZ( filter_t *p_filter,
     i_a = VLC_CLIP( i_a, 0, 255 );
     uint8_t i_x, i_y, i_z;
 
-    if (p_region->b_renderbg) {
+    if (p_region->b_noregionbg) {
         /* Render the background just under the text */
         FillPicture( p_picture, STYLE_ALPHA_TRANSPARENT, 0x00, 0x00, 0x00 );
         RenderBackground(p_region, p_line_head, p_bbox, i_margin, p_picture, i_text_width,