add avcodec_get_subtitle_defaults() to initialize AVSubtitle struct

Call this new function before decode() to replace the custom and
inconsistant initialization in various decoders.
This function is equivalent to avcodec_get_frame_defaults() for AVFrame.

Signed-off-by: Aurelien Jacobs <aurel@gnuage.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index 457371361c..288e6f51fe 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -1323,10 +1323,7 @@ static int dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf,
     int i;
     int offset_x=0, offset_y=0;
 
-    sub->rects = NULL;
-    sub->start_display_time = 0;
     sub->end_display_time = ctx->time_out * 1000;
-    sub->format = 0;
 
     if (display_def) {
         offset_x = display_def->x;