commit bec333c4d3e8a0f63d9c5667eac92c1b092883f2
Author: Eejya Singh <[email protected]>
Date:   Wed Jan 28 17:41:42 2015 +0530

    Adding Force Style option in Subtitles Filter

    Signed-off-by: Eejya Singh <[email protected]>

diff --git a/libavfilter/vf_subtitles.c b/libavfilter/vf_subtitles.c
index be4c6a5..f8e5d45 100644
--- a/libavfilter/vf_subtitles.c
+++ b/libavfilter/vf_subtitles.c
@@ -51,6 +51,7 @@ typedef struct {
     ASS_Track    *track;
     char *filename;
     char *charenc;
+    char *force_style;
     int stream_index;
     uint8_t rgba_map[4];
     int     pix_step[4];       ///< steps per pixel for each plane of the main output
@@ -260,6 +261,7 @@ static const AVOption subtitles_options[] = {
     {"charenc",      "set input character encoding", OFFSET(charenc),      AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, FLAGS},
     {"stream_index", "set stream index",             OFFSET(stream_index), AV_OPT_TYPE_INT,    { .i64 = -1 }, -1,       INT_MAX,  FLAGS},
     {"si",           "set stream index",             OFFSET(stream_index), AV_OPT_TYPE_INT,    { .i64 = -1 }, -1,       INT_MAX,  FLAGS},
+    {"force_style",  "force subtitle style",         OFFSET(force_style),  AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, FLAGS},
     {NULL},
 };

@@ -389,6 +391,27 @@ static av_cold int init_subtitles(AVFilterContext *ctx)
     if (ass->charenc)
         av_dict_set(&codec_opts, "sub_charenc", ass->charenc, 0);
     ret = avcodec_open2(dec_ctx, dec, &codec_opts);
+
+    if (ass->force_style){
+
+        av_log(ctx, 0, "User Input is %s\n",ass->force_style);
+        char **list = NULL;
+        char *temp;
+        char *ptr = av_strtok(ass->force_style,",",&temp);
+        int i=0;
+        while(ptr)
+        {
+            list = av_realloc(list,sizeof(char *)*(i+1));
+            list[i] = ptr;
+            ptr = av_strtok(NULL, ",",&temp);
+            i++;
+        }
+        list = av_realloc(list,sizeof(char *)*(i+1));
+        av_log(ctx, 0, "I value is %d\n",i);
+        list[i]=NULL;
+        ass_set_style_overrides(ass->library,list);
+        //ass_process_force_style(ass->track);
+    }
     if (ret < 0)
         goto end;